JP2023008157A - pouch - Google Patents

Abstract

A liquid holding sheet impregnated with a chemical solution can be stored as a content, taken out without using tweezers, etc., and the chemical solution can be applied to the desired location without causing the chemical solution to adhere to unintended portions. To provide a pouch capable of applying a chemical solution to a skin. The present invention comprises a pouch body and a band attached to the pouch body, and the pouch body is manufactured by sealing three peripheral edge portions other than the fold lines for folding in two, and the band is formed along the fold lines for folding in two. Both ends are adhered to the outer surface of the pouch body across the pouch body, and the liquid retention sheet is similarly folded in half along the inner wall of the pouch body and stored. It is possible to open the sealed portion to open the pouch body to expose the stored liquid retaining sheet, and to be able to insert a finger into the gap between the laminated film of the pouch body and the band in the unsealed state. Characterized pouch. [Selection drawing] Fig. 1

Description

The present invention relates to a pouch, which is one type of packaging material. In particular, it relates to a pouch that can be used, for example, as a package for external medicinal solutions, without the need to take out the contents using tweezers or the like, and without the medicinal solution adhering to areas other than the necessary parts when the medicinal solution is applied.

A pouch is a packaging container using a plastic film or its laminated film, and is a flexible packaging material. For example, it is also used as a container for liquids, and is widely used in the food field such as beverages and retort food, as well as in the field of daily necessities and toiletries, and in the medical field. Bustling store shelves.

The advantages of pouches are that they are cheaper than other packaging containers such as cans and bottles, and that they can meet various quality requirements through detailed material design. It is lightweight and space-saving. In addition, the pouch can be said to be an environment-friendly container from the viewpoint of reducing waste.

In addition, high-definition printing on the layer that can be seen from the outside of the pouch can improve the image of the product and differentiate it, making it possible to display necessary information about the contents. It is also a source of product distribution, inventory management, and marketing information.

Among pouches, self-supporting pouches have also been commercialized and are generally called standing pouches. Being self-supporting has an advantage in the display and display of products, and also has an advantage in usability.

To remove the contents from the pouch, it is generally possible to tear a part of the pouch with your fingers or cut it with a knife such as a cutter or scissors to form an opening and take it out from the opening. be. In this case, if the content is liquid, it can be taken out by pouring out the content liquid, and if the content is solid such as confectionery, it can be taken out by picking it up.

In addition, there are pouches that can be opened and closed repeatedly by attaching a spout, etc., and pouches equipped with an easy-to-open mechanism for easy opening are also highly convenient and widely used.

Further, Patent Document 1 proposes a pouch in which wet tissues are sealed. A wet tissue is an impregnated base material such as a non-woven fabric impregnated with a liquid such as alcohol, and is used for wiping fingers, for example. Therefore, when removing the wet tissue from the pouch, it is common to pick it up with fingers.

However, some liquids are difficult to touch with fingers. For example, tincture of iodine is colored, and when it adheres to fingers, it is not easy to discolor the adhesion site or remove the discoloration, which is inconvenient. In addition, among medical liquids, for example, there are liquids for external use that avoid contact with fingers and avoid contamination.

In this way, when the sheet cannot be picked up with fingers, the liquid holding sheet impregnated with the liquid is picked up with tweezers or the like to be taken out from the pouch, and the liquid is applied while being picked up with the tweezers or the like.

However, it is cumbersome to perform all the operations from taking out from the pouch, applying, and discarding while pinching with tweezers or the like. Moreover, if all the operations are performed while the operator is pinching the operator with tweezers or the like, the liquid may inadvertently adhere to an unintended portion or be scattered. Alternatively, there is a risk that the liquid holding sheet may be dropped from the tweezers or the like, which requires skill.

JP 2019-189292 A

The present invention has been made in view of such a situation, and it is possible to store a liquid holding sheet impregnated with a chemical solution as a content, take it out without using tweezers or the like, apply the chemical solution, and apply the chemical solution to an unintended part. An object of the present invention is to provide a pouch capable of applying a chemical solution to a required portion without causing the chemical solution to adhere.

As a means for solving the above problems, the invention according to claim 1,
A pouch comprising a plastic film as a base material, a pouch body made of a laminated film having a sealant layer on at least one surface, and a band attached to the pouch body,
The pouch body is made by folding the laminated film in two with the sealant layers facing each other, and sealing the peripheral edges on three sides other than the fold lines of the two folds.
The band straddles the fold line of the two folds, and both ends are adhered to the outer surface of the pouch body,
The pouch body can accommodate a liquid holding sheet impregnated with a chemical solution in a sealed space surrounded by the folding line and three side seals,
The liquid holding sheet is similarly folded in half along the inner wall of the pouch body and stored,
When opening the pouch, it is possible to open the pouch main body by opening the seals on three sides to expose the contained liquid holding sheet,
The pouch is characterized in that, in an unsealed state, a finger can be inserted into the gap between the laminated film of the pouch body and the band.

In addition, the invention according to claim 2,
2. The pouch according to claim 1, wherein the laminated film includes a gas barrier layer laminated thereon.

In addition, the invention according to claim 3,
3. The pouch according to claim 1, wherein the material of the liquid-retaining sheet is a nonwoven fabric.

Further, the invention according to claim 4,
The pouch according to any one of claims 1 to 3, wherein the pouch body and the liquid-retaining sheet are laminated via an adhesive.

In addition, the invention according to claim 5,
The pouch according to any one of claims 1 to 4, characterized in that opening of the three-side sealed portions is achieved by an easy-to-open mechanism provided in the laminated film.

Further, the invention according to claim 6,
6. The pouch according to claim 5, wherein the easy-to-open mechanism is formed by half-cutting or perforation, and is provided as an unsealing line on the inner side of the three-sided sealing portion of the pouch body. .

In addition, the invention according to claim 7,
The easy-to-open mechanism is based on easy peeling of the seal portion, and the peel strength of the seal portions on three sides of the pouch body is in the range of 1 N/15 mm to 12 N/15 mm. It is a pouch as described.

According to the present invention, a liquid holding sheet impregnated with a chemical solution is stored as a content, and the chemical solution can be applied without using tweezers or the like. It is possible to provide a pouch that allows application of a chemical solution to a location.

That is, the pouch according to the present invention comprises a pouch body made of a laminated film having a plastic film as a base material and a sealant layer on at least one surface thereof, and a band attached to the pouch body, wherein the pouch body is the sealant layer of the laminated film. The pouches can be made to have a sealed structure by making the pouches face each other and folding them in two, and sealing the peripheral edges on three sides other than the fold lines of the two folds. In addition, since the constituent elements are made of plastic material, the pouch is water-resistant, so that it is possible to store, for example, a liquid-retaining sheet in the contents.

In addition, the pouch body can accommodate a liquid holding sheet impregnated with a chemical solution in a sealed space surrounded by the folding line and three side seals at the perimeter, and the liquid holding sheet is The liquid holding sheet impregnated with the liquid medicine can be stably stored in this space by being similarly folded in half along the inner wall of the pouch body. Moreover, when the pouch is opened, the liquid-retaining sheet can be largely exposed along the pouch body, which is convenient for subsequent application of medicine.

The band that constitutes the pouch has both ends glued to the outer surface of the pouch body across the folding line of the pouch body. Since the pouch is insertable, it becomes possible to apply the drug impregnated in the exposed liquid-retaining sheet to the target object without adhering to fingers or the like after the pouch is opened.

That is, since fingers can be inserted into the gap between the laminated film of the pouch body and the band, when the liquid holding sheet is pressed to apply the medicine, the pressure can be applied through the laminated film of the pouch body. Therefore, fingers can be prevented from directly touching the drug impregnated in the liquid holding sheet.

In particular, according to the second aspect of the invention, the gas barrier layer is laminated in the laminated film to reduce the influence of the environment outside the pouch on the contents, and the deterioration and deterioration of the contents. can be prevented and the long-term storage stability can be improved. It is also possible to prevent the medicinal components of the liquid medicine from dissipating to the outside.

According to the third aspect of the present invention, the material of the liquid holding sheet is a non-woven fabric, so that the liquid holding sheet can be stored in the pouch while being sufficiently soaked with the liquid medicine. In addition, even when the coating liquid is applied to the object to be coated after opening, the impregnated state of the nonwoven fabric is effective for uniform coating of the liquid medicine, and it is possible to make it more convenient. be.

Further, according to the fourth aspect of the invention, the pouch body and the liquid retention sheet are laminated via an adhesive, so that the liquid retention sheet is fixed to the pouch body, and after opening, the applied chemical solution can be applied. is applied to an object to be coated, the liquid-retaining sheet does not come off, and the pouch can be easily applied and can be made into a highly convenient pouch. Alternatively, by adjusting the adhesive strength of the adhesive layer, it is also possible to make a configuration in which the liquid holding sheet can be separated from the pouch body if necessary.

Further, according to the fifth aspect of the invention, in the pouch, the opening of the three-sided seal portions of the pouch body is achieved by an easy-to-open mechanism provided in the laminated film. The pouch can be easily opened, and a highly convenient pouch can be obtained.

In particular, according to the sixth aspect of the invention, the easy-to-open mechanism is formed by half-cutting or perforation, and the inside of the three-sided sealing portion of the pouch body is provided as an unsealing line. , it is possible to easily and accurately open the pouch using fingers, and the pouch can be made highly convenient.

In particular, according to the seventh aspect of the invention, the easy-to-open mechanism is based on easy peeling of the seal portion, and the peel strength of the seal portions on three sides of the pouch body is in the range of 1 N/15 mm to 12 N/15 mm. As a result, it is possible to make a pouch that is practically easy to use without impairing the easy opening property of the pouch and without unexpected bag breakage or opening even in situations where external force is applied such as transportation and handling. can.

FIG. 1 is a schematic plan view (partial perspective view) for explaining one embodiment of the pouch according to the present invention. FIG. 2 is a schematic cross-sectional view of the central portion of the pouch for explaining one embodiment of the pouch according to the present invention. FIG. 3 is a schematic plan view (partial perspective view) for explaining an example of an easy-to-open mechanism in one embodiment of the pouch according to the present invention. FIG. 4 is a schematic plan view (partial perspective view) for explaining how an example of an easy-to-open mechanism is opened in one embodiment of the pouch according to the present invention. FIG. 5 is a schematic plan view (partial perspective view) for explaining another example of the easy-to-open mechanism in one embodiment of the pouch according to the present invention. FIG. 6 is a schematic plan view (partial perspective view) for explaining how another example of the easy-to-open mechanism is opened in one embodiment of the pouch according to the present invention. FIG. 7 is a perspective (partially see-through) schematic diagram for explaining how the liquid holding sheet is coated with the chemical solution in the opened pouch in one embodiment of the pouch according to the present invention.

Hereinafter, the present invention will be described in more detail with reference to FIGS. 1 to 7. FIG. However, the present invention is not limited only by the examples given here. The invention is defined by the claims.

FIG. 1 is a schematic plan view (partial perspective view) for explaining one embodiment of the pouch according to the present invention.

The present invention relates to a pouch (100). This pouch (100) is composed of a pouch body (10) made of a laminated film having a plastic film as a base material and a sealant layer on at least one surface, and a band (20) attached to the pouch body (100). be.

In the example shown in FIG. 1, the pouch body (10) has a rectangular shape, and the sealant layers of the laminated film are placed facing each other and folded in half. ) is sealed and made into a bag.

The band (20) straddles the fold line (11) of the two folds and has both ends (21) adhered to the outer surface of the pouch body. However, one of the ends (21) is beyond the pouch body (10) and is not visible in FIG.

There is no particular limitation on the method of adhering both ends (21) of the band (20) and the pouch body (10). For example, it is possible to adhere using an adhesive, and it is also possible to use heat sealing or ultrasonic sealing.

Also, the material of the band (20) is not particularly limited. In addition to general-purpose plastic materials, elastomers, for example, can also be used.

FIG. 2 is a schematic cross-sectional view of the central portion of the pouch for explaining one embodiment of the pouch according to the present invention.

The cross-sectional view shown in FIG. 2 is a schematic cross-sectional view taken along a plane perpendicular to the pouch (100) passing through AB in the central portion of the pouch (100) shown in FIG.

The pouch (100) is composed of a pouch body (10) made of a laminated film having a plastic film as a base material and a sealant layer on at least one surface, and a band (20) attached to the pouch body (10). .

In the example shown in FIG. 1 above, the pouch body (10) is rectangular, and the sealant layers of the laminated film are placed facing each other and folded in half. (12) is sealed to form a bag.

However, since FIG. 2 shows a cross-section of the central portion of the pouch (100), the seals on the three peripheral edges (12) are not visible on both sides, and the seals on the top of the three sides are not visible. is shown in cross section.

The sealing of the peripheral edges (12) on the three sides can seal the pouch body (10) by placing the sealant layers of the laminated film facing each other, sealing them, and folding them in half along the folding lines (11). This sealing is not particularly limited, and for example, heat sealing can be used for sealing.

However, when the sealing portion of the peripheral portion (12) on the three sides is used as an easy-to-open mechanism, the peel strength should be within the range of the peel strength defined in the present invention. The case where the sealing portion of the peripheral portion (12) on the three sides is an easy-to-open mechanism will be described in detail with reference to FIGS. 5 and 6. FIG.

A liquid holding sheet (30) impregnated with a liquid medicine is placed in a sealed space (13) surrounded by a fold line (11) and three peripheral edges (12) of the pouch body (10). can be stored.

However, although this space (13) is illustrated as a space (13) expanded with volume in FIG. In this case, the space (13) can be filled only with the liquid holding sheet (30) impregnated with the chemical solution.

A liquid holding sheet (30) as a content is stored in this space (13) while being folded in two along the inner wall of the pouch body (10).

On the other hand, the band (20) straddles the folding line (11) of the pouch body (10) and attaches both ends (21) to the outside surface of the pouch body (10) by the adhesive part (22). Glued.

There is no particular limitation on the method of adhering both ends (21) of the band (20) and the pouch body (10). For example, it is possible to adhere using an adhesive, and it is also possible to use heat sealing or ultrasonic sealing.

When the pouch (100) is opened, there is a gap (23) between the laminated film of the pouch body (10) and the band (20) so that a finger can be inserted. As a result, while holding the pouch body (10) with fingers, it is possible to press the liquid retention sheet (30) through the laminated film of the pouch body (10) with fingers. ) can be applied to the required area without direct finger contact.

Here, the material of each element constituting the pouch (100) according to the present invention will be explained. Components to be described here are a plastic film, a gas barrier layer, a sealant layer and a printing layer.

The pouch (100) according to the invention consists of a plastic film provided with a sealant layer. That is, it is composed of a laminated film having a sealant layer, using a plastic film as a base material. This laminated film may contain a gas barrier layer for the purpose of improving storage stability.

By laminating the gas barrier layer on the laminated film that constitutes the pouch (100), the influence of the environment outside the pouch (100) on the contents is reduced, the deterioration and deterioration of the contents are prevented, and the long-term storage is possible. It is possible to improve the storage stability. It is also possible to prevent the medicinal components of the liquid medicine from dissipating to the outside.

Generally, plastic films are films made of polymer resin compositions, such as polyolefins (polyethylene, polypropylene, etc.), polyesters (polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, etc.), polyamides (nylon-6, nylon-66, etc.). , polyimide, etc. can be used, and are appropriately selected according to the use of the pouch.

In particular, when polypropylene or polyethylene terephthalate is used as a plastic film as a substrate, it is preferable in terms of film strength and cost. In addition, when a stretched polyamide film is used, the laminated film can be imparted with toughness against puncture and toughness against impact.

Also, the plastic film can be laminated with another layer via an adhesive layer to form a laminated film. Therefore, the layer structure of the laminated film, its material structure, thickness, etc. can be appropriately designed according to the quality required for the pouch.

Further, as described above, a gas barrier layer can be provided in the laminated film constituting the pouch (100) for the purpose of improving the storage stability of the contents. For example, a gas barrier film can be used in which a gas barrier layer is provided on the surface of a plastic film.

In addition to plastic materials, metal foils such as aluminum and vapor-deposited metal films are also effective as gas barrier layers, but are optically opaque. These may be appropriately selected and used depending on the purpose and contents of the pouch (100).

In the case of the gas barrier film, the plastic film used is a film made of a polymer resin composition, such as polyolefin (polyethylene, polypropylene, etc.), polyester (polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, etc.), polyamide. (nylon-6, nylon-66, etc.), polyimide, etc. can be used, and are appropriately selected according to the application. In particular, when polypropylene or polyethylene terephthalate is used as the plastic film substrate, it is preferable in terms of film strength and cost.

In the case of a gas barrier film, the gas barrier layer can be composed of a deposited layer of an inorganic compound and a layer formed by a wet coating method. After providing an anchor coat on a plastic film, the deposited layer and the wet coating layer are sequentially provided.

Urethane acrylate, for example, can be used for the anchor coat layer of the gas barrier film. For the formation of the anchor coat layer, a paint film is formed by dissolving a resin in a solvent using a coating method that applies a printing method such as gravure coating, and other commonly known coating methods are used to form a coating film. can do.

As a method for forming a vapor deposition layer, an inorganic compound such as SiO or AlO is coated on a plastic film provided with an anchor coat layer using a vacuum vapor deposition method, and an inorganic compound layer can be formed by a vacuum vapor deposition method. . This layer is an optically transparent layer. Incidentally, the thickness of the deposited layer is preferably 15 nm to 30 nm.

A layer can be further formed by a wet coating method on the inorganic compound layer by the vacuum deposition method, and the method includes a water-soluble polymer and (a) one or more alkoxides or hydrolysates thereof, or A coating agent mainly composed of an aqueous solution containing at least one of both or (b) tin chloride or a water/alcohol mixed aqueous solution is applied on the film, and dried by heating to form an inorganic compound layer by a coating method. can be layered. At this time, the adhesion to the anchor coat layer can be improved by adding a silane monomer to the coating agent.

The inorganic compound layer has a gas barrier property even when the layer is formed by a vacuum deposition method alone, but an inorganic compound layer formed by a wet coating method can be superimposed on an inorganic compound layer formed by a vacuum deposition method to form a gas barrier layer.

By combining these two layers, a reaction layer of both layers is generated at the interface between the inorganic compound layer by the vacuum deposition method and the inorganic compound layer by the wet coating method, or the inorganic compound layer by the wet coating method is combined with the inorganic compound layer by the vacuum deposition method. A dense structure is formed by filling and reinforcing defects such as pinholes, cracks, and grain boundaries that occur in the compound layer.

Therefore, as a gas barrier film, higher gas barrier properties, moisture resistance, and water resistance can be realized, and since it has flexibility to flexibly withstand deformation due to external force, it can also be equipped with suitability as a packaging material.

Moreover, when SiO, for example, is used as the gas barrier layer, the coating is transparent, so that the contents can be seen from the outside of the pouch (100). These may be properly used depending on the application and required quality.

In addition, even when the pouch (100) is provided with the printed layer, it is possible to leave a part of the pouch (100) where the printed layer is not provided and use this part as a window to make the inside of the pouch (100) visible.

The sealant layer is formed by stacking two laminated films so that the sealant layers face each other, heating and pressurizing them, for example, by heat-sealing them so that they adhere to each other, making it possible to form a pouch (100). do.

In addition, in the present invention, when an easy-open mechanism is provided, the sealing of the three sides of the pouch body (12) is easily peelable, and the sealant layer is also made of an easily peelable material. Or, it shall be sealed within the range of peel strength that allows easy peeling. The easy-to-open mechanism using this easy peel will be described later with reference to FIGS. 5 and 6. FIG.

Among thermoplastic resins, polyolefin resins are generally used as the material of the sealant layer. Specifically, low density polyethylene resin (LDPE), medium density polyethylene resin (MDPE), linear low density polyethylene A resin (LLDPE) can be used.

In addition, ethylene-based resins such as ethylene-vinyl acetate copolymer (EVA), ethylene-α-olefin copolymer, ethylene-methacrylic acid resin copolymer, blended resins of polyethylene and polybutene, homopolypropylene resin (PP ), propylene-ethylene random copolymers, propylene-ethylene block copolymers, and propylene-α-olefin copolymers.

The sealant layer can be formed by forming a film from a melted resin using an extruder or the like to form a layer on the laminated film. Alternatively, it is also possible to form a sealant layer on the surface of the laminated film by laminating materials that have been formed into films in advance.

Next, a description of the print layer is added. That is, if necessary, for the purpose of improving the image of the product, displaying necessary information about the contents, or improving the design, the pouch (100) in the laminated film using the plastic film as the base material is visible from the outside of the pouch (100). A printed layer can be provided on the layer. The printed layer may be provided on the outermost layer of the pouch (100).

Moreover, the printed layer may be provided on a part of the pouch (100), or may be provided on the entire surface of the pouch (100). Alternatively, as a method of providing a display portion without using a printed layer, it is possible to attach a printed seal to the surface of the pouch (100), for example.

Here, there are no particular restrictions on the printing method and printing ink, but there are known printing methods, suitability for printing on plastic films from among materials, design properties such as color tone, adhesion, and safety to the human body. It may be selected as appropriate in consideration of the nature and the like.

The printing method can be appropriately selected from known printing methods such as gravure printing, offset printing, gravure offset printing, flexographic printing, silk screen printing, and inkjet printing. Among these, the gravure printing method can be preferably used in terms of productivity, suitability for printing on plastic films, and high definition of patterns.

FIG. 3 is a schematic plan view (partial perspective view) for explaining an example of an easy-to-open mechanism in one embodiment of the pouch according to the present invention.

When opening the pouch (100) according to the present invention, the pouch body (10) is opened by opening the sealed portions of the three peripheral edges (12) other than the folding line (11) of the two folds, and the pouch body (10) is opened. The liquid retaining sheet (30) housed in the can be exposed.

By opening and unsealing the sealed portion of the peripheral edge portion (12) on three sides, the opening becomes the entire pouch body (10), and it is possible to expose the one-sided front portion of the liquid holding sheet (30) containing the contents. Become.

It is possible to open the sealed portion of the peripheral edge (12) on the three sides by using a knife or a tool such as a cutter or scissors. This makes it possible to easily open the package with fingers.

For example, as an example of an easy-to-open mechanism, half-cuts or perforations provided on the laminated film forming the pouch body (10) can be used. These can be appropriately selected and used.

However, if the laminated film that constitutes the pouch body (10) contains a gas barrier layer, it is necessary to take care not to penetrate or damage the gas barrier layer. It is also inappropriate to provide through.

In addition, half cuts or perforations as an easy-to-open mechanism can be provided as unsealing lines inside the sealed portions of the three peripheral edges (12) of the pouch body (10).

That is, in the example shown in FIG. 3, the expected opening line (14) on the upper side and the expected opening line (15) on both left and right ends can be provided. Moreover, in the example shown in FIG. 3, the planned opening line is an example using perforations.

The planned opening line is effective in making it easier and more stable to open the pouch (100) and in accurately opening it at a pre-intended position.

Such a planned opening line can be indicated by providing a notch in the end of the pouch body (10) or by printing on a layer visible from the outside of the pouch (100) in order to visualize the position. In some cases, the opening of the pouch (100) by fingers can be made easier, and the convenience is high.

FIG. 4 is a schematic plan view (partial perspective view) for explaining how an example of an easy-to-open mechanism is opened in one embodiment of the pouch according to the present invention.

In the example shown in FIG. 3, there are three planned opening lines: the planned opening line (14) on the upper side and the planned opening lines (15) on the left and right ends. That is, by this, the sealed portions of the peripheral edge (12) on three sides are opened, and the pouch (100) is to be opened.

For opening, for example, first, the planned opening line (14) on the upper side is cut by fingers to separate it. Then, the planned unsealing lines (15) on the left and right ends are cut and separated. This releases the rim (12) on three sides from the seal.

Subsequently, the pouch body (10) is opened in the direction of the two dashed arrows (1) shown in FIG. The liquid retaining sheet (30) thus formed can be widely exposed.

In the examples shown in FIGS. 3 and 4, the three planned opening lines all extend from the end of one side of the pouch body (10) to the end of the opposite side. The order of tearing the planned opening line does not matter.

The pouch body (10) that has been separated and unsealed by opening the seals on the peripheral edges (12) on three sides opens in the direction of the two dashed arrows (1) in FIG. (30) can be widely exposed.

FIG. 5 is a schematic plan view (partial perspective view) for explaining another example of the easy-to-open mechanism in one embodiment of the pouch according to the present invention.

As described above, in opening the pouch (100) according to the present invention, the sealed portions of the peripheral edge (12) on three sides are opened to open the pouch body (10), exposing the contained liquid holding sheet (30). can be made

In the examples shown in FIGS. 3 and 4, the opening of the seals on the three sides of the peripheral edge (12) is achieved by providing an easy-to-open mechanism by providing half cuts or perforations inside the seals of the pouch body (10). However, as an easy-to-open mechanism of another type, it is also possible to form the seal portions of the peripheral edge portion (12) on three sides as easily peelable seal portions (16), and the pouch ( 100) can be easily opened.

As a result of extensive studies in devising the present invention, we found that the peel strength of the easily peelable seal portion (16) is appropriately in the range of 1 N/15 mm to 12 N/15 mm, particularly 2 N/15 mm. A range of 15 mm to 8 N/15 mm has been found to be optimal.

When the peel strength is within this range, the pouch (100) can be easily opened by fingers, etc., and even when subjected to external force such as transportation and handling, unexpected bag breakage and opening do not occur. , Pouch (100) that is practically easy to use.

There are no particular restrictions on the method of forming the easily peelable seal portion (16). For example, it is possible to select and use an easy peel sealant material,
Alternatively, depending on the sealing conditions, it is also possible to make it an easy peel state.

FIG. 6 is a schematic plan view (partial perspective view) for explaining how another example of the easy-to-open mechanism is opened in one embodiment of the pouch according to the present invention.

In the example shown in FIG. 6, the easy-to-open means to peel off the easily peelable seal (16) with fingers to open the seals on the three peripheral edges (12). The three peripheral edges (12) are the top edge and the two side edges.

To open the pouch body (10), open the pouch body (10) in the direction of the two dashed arrows (2) shown in FIG. The stored liquid holding sheet (30) can be widely exposed.

FIG. 7 is a perspective (partially see-through) schematic diagram for explaining how the liquid holding sheet is coated with the chemical solution in the opened pouch in one embodiment of the pouch according to the present invention.

The example shown in FIG. 7 is an example in which the package is opened using an easy-to-open mechanism with perforations shown in FIG. In the unsealed state, the liquid holding sheet (30) impregnated with the chemical solution is exposed at the top while being spread out to the left and right, and the laminated film (17) constituting the pouch body (10) is exposed. It is supported from below.

The pouch (100) is composed of a pouch body (10) made of a laminated film and a band (20) attached to the pouch body (10). Both ends (21) are adhered to the outside surface of the pouch body (10) while straddling.

7, the band (20) is below the laminated film (17) of the pouch body (10) and is mostly invisible, but is shown as a perspective view with a dashed line. Part of the band (20) and the gap (23) are visible.

There is a gap (23) between the laminated film of the pouch body (10) and the band (20), and a finger can be inserted into this gap (23). It is possible to apply the drug impregnated in the holding sheet (30) to the intended object to be applied without adhering to fingers (40) or the like.

That is, since the finger (40) can be inserted into the gap (23) between the laminated film of the pouch body (10) and the band (20), the liquid holding sheet (30) can be pushed with the finger (40) to apply the drug. ), the pressure is applied through the laminated film of the pouch body (10), which prevents the finger (40) from directly touching the drug impregnated in the liquid retention sheet (30). can.

Further, in the present invention, the pouch body (10) and the liquid retention sheet (30) can be laminated via an adhesive inside the pouch body (10). The pouch body (10) and the liquid retention sheet (30) are laminated via an adhesive, so that the liquid retention sheet (30) is fixed inside the pouch body (10) and can be applied after opening. Even when the liquid medicine is applied to the object to be coated, the liquid holding sheet (30) does not come off, allowing easy and stable application, and a highly convenient pouch.

Alternatively, by adjusting the adhesive strength of the adhesive layer, it is possible to configure the liquid holding sheet (30) to be separated from the pouch body (10) if necessary.

The material of the liquid holding sheet (30) can be nonwoven fabric. The non-woven fabric is flexible, and because it is a non-woven fabric, it is possible to store the contents in the pouch while holding and holding the chemical solution sufficiently. It is also effective in realizing uniform application when applying to the surface.

The material of the nonwoven fabric is not particularly limited, and fibers such as olefin, polyester, and cellulose fibers can be used. Although the basis weight of the non-woven fabric is not particularly limited, it can be used in the range of 5 g/m ² to 200 g/m ² , more preferably in the range of 30 g/m ² to 100 g/m ² .

Also, if the basis weight of the nonwoven fabric is less ^than 5 g/m ² , it may not be possible to hold a sufficient amount of the chemical solution. Absent.

Also, the liquid holding sheet (30) and the pouch body (10) can be laminated via an adhesive. By being laminated via an adhesive, the liquid holding sheet (30) is fixed to the pouch body (10), and after opening, it is highly convenient when applying the liquid medicine to the object to be coated. can do.

This is intended to directly apply the liquid holding sheet (4) attached to the pouch (100) without removing it from the pouch (100) when applying the liquid medicine.

However, if necessary, it is possible to separate the liquid holding sheet (30) from the pouch body (10) by adjusting the adhesive strength of the adhesive layer.

That is, the pouch (100) according to the present invention can be stored inside the non-woven fabric impregnated with a chemical solution, and there is a risk of the chemical solution adhering or scattering to unintended parts when picking it up with tweezers or fingers when taking it out. This enables uniform application of the chemical solution only to the necessary locations.

The present invention will now be described in more detail with reference to Examples 1-4 and Comparative Examples 1-2. However, the present invention is not limited only by the examples given here. The invention is defined by the claims.

An evaluation pouch (100) was produced and evaluated.
Evaluation items (three items) and evaluation methods are as follows.

- Unsealability Panelists (30 people) were asked to open the pouches and evaluated.
When 27 or more people judged that it was easy to open, it was evaluated as ◯.
Other than that, it was set as x evaluation.
The description of the evaluation result is described as (27/3) when 27 people evaluated that it was easy to open as (the number of people judged to be easy to open/the others).

-Transportation test Based on JIS Z0200, the pouch (100) was placed in cardboard and a transportation test was carried out.
A random vibration test was performed and evaluated under Level 1 conditions.
A case where the pouch seal was not opened was evaluated as 0.
When the pouch was unsealed, it was evaluated as x.

- Applicability 30 panelists were asked to apply the chemical solution of the liquid retaining sheet (4) housed in the opened pouch (100) and evaluated.
When 27 or more people judged that it was easy to apply, it was evaluated as ◯.
Other than that, it was set as x evaluation.
The description of the evaluation result is described as (27/3) when 27 people evaluated that it was easy to apply as (number of people judged to be easy to apply/others).

<Example 1>
A pouch having an easy-to-open mechanism with perforations as shown in FIG. 3 was produced.
The configuration of the pouch is as follows.
・Opening method: Opening by cutting off the seal part with perforations.
・Construction of laminated film: Inorganic compound-deposited polyethylene terephthalate film (thickness 12 μm) / stretched polyamide film (thickness 15 μm) / non-stretched polypropylene film (thickness 60 μm, giving straight cutability)
・Peel strength: 3.0N/15mm
・Liquid retention film: polypropylene non-woven fabric (50 g/m ² )
・Band: Polyester elastomer (welded with ultrasonic seal).

<Example 2>
As shown in FIG. 5, a pouch having an easily peelable seal portion as an easy-to-open mechanism was produced.
The configuration of the pouch is as follows.
・Opening method: Opening by peeling off the seal part of the peripheral edge on three sides.
・Construction of laminated film: Inorganic compound-deposited polyethylene terephthalate film (thickness 12 μm) / stretched polyamide film (thickness 15 μm) / non-stretched polypropylene film (thickness 60 μm, giving straight cutability)
・Peel strength: 3.0N/15mm
・Liquid retention film: polypropylene non-woven fabric (50 g/m ² )
・Band: Polyester elastomer (welded with ultrasonic seal).

<Example 3>
As shown in FIG. 5, a pouch having an easily peelable seal portion as an easy-to-open mechanism was produced.
The configuration of the pouch is as follows.
・Opening method: Opening by peeling off the seal part of the peripheral edge on three sides.
・Construction of laminated film: Inorganic compound-deposited polyethylene terephthalate film (thickness 12 μm) / stretched polyamide film (thickness 15 μm) / non-stretched polypropylene film (thickness 60 μm, giving straight cutability)
・Peel strength: 0.5N/15mm
・Liquid retention film: polypropylene non-woven fabric (50 g/m ² )
・Band: Polyester elastomer (welded with ultrasonic seal).

<Example 4>
As shown in FIG. 5, a pouch having an easily peelable seal portion as an easy-to-open mechanism was produced.
The configuration of the pouch is as follows.
・Opening method: Opening by peeling off the seal part of the peripheral edge on three sides.
・Construction of laminated film: Inorganic compound-deposited polyethylene terephthalate film (thickness 12 μm) / stretched polyamide film (thickness 15 μm) / non-stretched polypropylene film (thickness 60 μm, giving straight cutability)
・Peel strength: 15N/15mm
・Liquid retention film: polypropylene non-woven fabric (50 g/m ² )
・Band: Polyester elastomer (welded with ultrasonic seal).

<Comparative Example 1>
A pouch having an easy-to-open mechanism with perforations as shown in FIG. 3 was produced.
The configuration of the pouch is as follows.
・Opening method: Opening by cutting off the seal part with perforations.
・Construction of laminated film: Inorganic compound-deposited polyethylene terephthalate film (thickness 12 μm) / stretched polyamide film (thickness 15 μm) / non-stretched polypropylene film (thickness 60 μm, giving straight cutability)
・Peel strength: 3.0N/15mm
・Liquid retention film: polypropylene non-woven fabric (50 g/m ² )
・Band: Not provided. This portion is different from Example 1 and is out of the scope of the present invention.

<Comparative Example 2>
As shown in FIG. 5, a pouch having an easily peelable seal portion as an easy-to-open mechanism was produced.
The configuration of the pouch is as follows.
・Opening method: Opening by peeling off the seal part of the peripheral edge on three sides.
・Construction of laminated film: Inorganic compound-deposited polyethylene terephthalate film (thickness: 12 µm)/stretched polyamide film (thickness: 15 µm)/easy peel material (thickness: 30 µm) from outside of pouch
・Peel strength: 3.0N/15mm
・Liquid retention film: polypropylene non-woven fabric (50 g/m ² )
・Band: Not provided. This portion is different from Example 2 and is out of the scope of the present invention.

As can be seen from the evaluation results shown in Table 1, all of Examples 1 to 4 were evaluated as ◯ in terms of coatability, and Comparative Examples 1 and 2 were evaluated as x in terms of coatability.

This is a problem in the present invention, which is that the non-woven fabric can be impregnated with a chemical solution and stored inside, and the risk of the chemical solution adhering to or scattering from unintended parts when picking it up with tweezers or fingers when taking it out can be avoided. This is the result of evaluating applicability as an evaluation item for achieving uniform application of the chemical solution only to the necessary areas. As a result, it bisects the

Add considerations to individual evaluation results. First, in Example 1, the openability, the transport test, and the applicability are evaluated as ◯. This is because, in opening, cutting off the seal portion on the three sides with perforations is effective as an easy-to-open mechanism, and the peel strength of the seal portion is 3.
. This is because 0 N/15 mm is more appropriate, and the band provided on the pouch according to the present invention improves the applicability evaluation, and the chemical solution adheres or scatters to unintended parts. It is possible to avoid the risk of this, and it is effective in achieving uniform application of the chemical solution only to the necessary areas.

In Example 2, the openability, transportation test, and applicability are all evaluated as ◯. This is due to the fact that easy peeling of the seals on the three sides is effective as an easy-to-open mechanism, and that the peel strength of the seals is 3.0 N/15 mm, which is more appropriate. The provision of a band on the pouch according to the present invention improves the evaluation of applicability and makes it possible to avoid risks such as adhesion and scattering of the chemical solution to unintended parts. This indicates that it is effective in achieving uniform application of the chemical solution only to the necessary locations.

In Example 3, both the openability and the applicability were evaluated as ◯. However, it was evaluated as x because the seal was opened in the transportation test. The easy-peel peel strength of the seal portion on the three sides is 0.5 N/15 mm, which is below the range defined in the present invention and is effective for easy opening. However, it is vulnerable to the external force in transportation, and this is the result.

However, the provision of the band on the pouch according to the present invention improves the applicability evaluation and makes it possible to avoid the risk of the chemical solution adhering to unintended parts or scattering. It was possible to obtain a clear result that it is effective in realizing uniform application of the chemical solution to the chisel. That is, it could be verified that the present invention is effective in solving the problems.

In Example 4, both the transportation test and the applicability are evaluated as ◯. However, there were many panelists who felt that it was difficult to open the package (1/29) x the evaluation. This is because the peel strength of the easy peel of the seal part on the three sides is 15 N / 15 mm, which is above the range specified by the present invention, and is effective for resistance to external force in the transportation test. However, it was not sufficient for the opening property by fingers, and this result was obtained.

However, the provision of the band on the pouch according to the present invention improves the applicability evaluation and makes it possible to avoid the risk of the chemical solution adhering to unintended parts or scattering. It was possible to obtain a clear result that it is effective in realizing uniform application of the chemical solution to the chisel. That is, it could be verified that the present invention is effective in solving the problems.

In Comparative Example 1, both the openability and the applicability were evaluated as ◯. However, few panelists felt that the coating was easy to apply (8/22)×evaluation. It is believed that this is because the pouch is not provided with a band, deviating from the provisions of the present invention.

On the other hand, the peel strength of the easy peel of the seal part on the three sides is 3.0 N / 15 mm, which is effective for resistance to external force in the transportation test, and the easy opening by perforation by fingers is effective. is. Therefore, both the transportation test and the evaluation result of the unsealability are evaluated as ◯.

That is, deviating from the provisions of the present invention and not providing a band on the pouch lowers the applicability evaluation, avoiding the risk of adhesion or scattering of the chemical solution to unintended parts. Since it does not lead to the realization of uniform application of the chemical solution only to the part, it was verified that providing the band on the pouch is effective in realizing these.

In Comparative Example 2, both the openability and the applicability were evaluated as ◯. However, few panelists felt that the coating was easy to apply (8/22)×evaluation. It is believed that this is because the pouch is not provided with a band, deviating from the provisions of the present invention.

On the other hand, the easy-peel peel strength of the sealed portions on the three sides is 3.0 N/15 mm, which is effective in resistance to external force in the transportation test and also effective in opening with fingers. Therefore, both the transportation test and the evaluation result of the unsealability are evaluated as ◯.

That is, deviating from the provisions of the present invention and not providing a band on the pouch lowers the applicability evaluation and avoids the risk of adhesion or scattering of the chemical solution to unintended parts. Since it does not lead to the realization of uniform application of the chemical solution only to specific areas, we were able to verify that providing a band on the pouch is effective in realizing these.

Thus, according to the present invention, the liquid holding sheet impregnated with the chemical solution can be stored as a content, taken out without using tweezers or the like, and the chemical solution can be applied, and the chemical solution adheres to an unintended portion. We were able to verify that it is possible to provide a pouch that allows the application of the chemical solution to the required area without causing the

1... Arrow 2... Arrow 10... Pouch body 11... Fold line for folding in half 12... Periphery on three sides 13... Space 14... Planned opening line 15... Opening Planned line 16 Easy peelable seal portion 17 Laminated film 20 Band 21 Both ends 22 Adhesive portion 23 Gap 30 Liquid retaining sheet 40・ Finger 100 ... Pouch

Claims (7)

A pouch comprising a plastic film as a base material, a pouch body made of a laminated film having a sealant layer on at least one surface, and a band attached to the pouch body,
The pouch body is made by folding the laminated film in two with the sealant layers facing each other, and sealing the peripheral edges on three sides other than the fold lines of the two folds.
The band straddles the fold line of the two folds, and both ends are adhered to the outer surface of the pouch body,
The pouch body can accommodate a liquid holding sheet impregnated with a chemical solution in a sealed space surrounded by the folding line and three side seals,
The liquid holding sheet is similarly folded in half along the inner wall of the pouch body and stored,
When opening the pouch, it is possible to open the pouch main body by opening the seals on three sides to expose the contained liquid holding sheet,
A pouch characterized by being able to insert a finger into a gap between a laminated film of a pouch body and a band in an unsealed state. The pouch according to claim 1, wherein the laminated film includes a gas barrier layer laminated thereon. 3. The pouch according to claim 1, wherein the material of said liquid-retaining sheet is a non-woven fabric. 4. The pouch according to any one of claims 1 to 3, wherein the pouch body and the liquid-retaining sheet are laminated via an adhesive. 5. The pouch according to any one of claims 1 to 4, characterized in that the opening of the three-side sealed portions is achieved by an easy-to-open mechanism provided in the laminated film. 6. The pouch according to claim 5, wherein the easy-to-open mechanism is formed by half-cutting or perforation, and is provided as an unsealing line on the inner side of the three-sided sealing portion of the pouch body. The easy-to-open mechanism is based on easy peeling of the seal portion, and the peel strength of the seal portions on three sides of the pouch body is in the range of 1 N/15 mm to 12 N/15 mm. Pouch as described.

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