JP2023011230A - pouch - Google Patents

Abstract

A liquid holding sheet impregnated with a chemical solution is stored, and the chemical solution can be applied to a required portion of an object without using tweezers or the like and without the chemical solution adhering to an unintended portion. An object is to provide a pouch. The pouch is composed of a pouch body, a liquid-retaining sheet, and a finger-fixing film attached thereto. and the base layer, the liquid retention sheet is laminated on the base layer while being impregnated with the chemical liquid, and the protective layer is imparted with the property of curling inward. The finger-fixing film is made of a plastic material, and a finger is inserted into the gap between the finger-fixing film and the base layer to press the base layer, so that the chemical solution impregnated in the liquid-retaining sheet can be applied to the object. A pouch characterized by: [Selection drawing] Fig. 1

Description

The present invention relates to a pouch, which is one type of packaging material. In particular, the present invention 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 with tweezers or the like, and without the medicinal solution adhering to areas other than the necessary parts when applying the medicinal solution.

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. It fills the product shelves of stores, etc.

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.

As described above, when the sheet cannot be picked up by pinching with fingers, the liquid holding sheet impregnated with the liquid can be picked up with tweezers or the like, removed from the pouch, and the liquid can be applied while being picked up with the tweezers or the like. It is

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, and to remove the chemical solution from an object without using tweezers or the like and without allowing the chemical solution to adhere to unintended parts. An object of the present invention is to provide a pouch that allows application of a chemical solution to a required portion.

As a means for solving the above problems, the invention according to claim 1,
is a pouch,
The pouch is composed of a pouch body, a liquid-retaining sheet, and a finger fixing film attached thereto,
The pouch body consists of a laminate having a plastic film as a base material and a sealant layer,
The pouch body is composed of a protective layer on one side and a base layer on the other side.
The sealing part of the peripheral part has easy peelability between the protective layer and the base layer,
A space between the protective layer and the base layer can contain and seal a liquid-retaining sheet,
The liquid holding sheet is impregnated with the chemical liquid and laminated on the base layer,
Unsealing is performed by peeling the protective layer from the base layer so that the surface of the liquid-retaining sheet can be exposed,
As the protective layer is peeled off, the protective layer is imparted with the property of curling inward,
The finger fixing film is made of a plastic material,
Both ends are glued to the surface of the base layer that will be the outside of the pouch,
The pouch is characterized in that a finger can be inserted into the gap between the finger-fixing film and the base layer to press the base layer, and the liquid-retaining sheet can be impregnated with a chemical liquid to be applied to an object.

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

In addition, the invention according to claim 3,
The pouch according to claim 1 or 2, wherein the liquid-retaining sheet is made of nonwoven fabric, and the nonwoven fabric has a basis weight of 5 g/m ² to 200 g/m ² .

Further, the invention according to claim 4,
The pouch according to any one of claims 1 to 3, wherein the base layer of the pouch body and the liquid retaining sheet are laminated by welding.

In addition, the invention according to claim 5,
The ratio of the area of the liquid holding sheet to which the chemical solution can be applied is in the range of 60% to 100% with respect to the area of the liquid holding sheet when the pouch is opened. Crab pouch.

In addition, the invention according to claim 6,
The pouch according to any one of claims 1 to 5, wherein the finger fixing film is detachable.

In addition, the invention according to claim 7,
The easy-to-open mechanism is based on easy peeling of the sealing portion, and the peel strength of the sealing portion of the pouch body is in the range of 5 N/15 mm to 25 N/15 mm. 7. The pouch according to any one of 6.

Further, the invention according to claim 8 is
8. The pouch according to any one of claims 1 to 7, wherein the inner curl of the protective layer curls at least two times or more when the pouch is opened.

According to the present invention, the liquid holding sheet impregnated with the chemical solution is contained in the liquid holding sheet, and the chemical solution can be applied to the desired part of the object without using tweezers or the like and without the chemical solution adhering to unintended parts. It is possible to provide pouches that can be coated.

The pouch is composed of a pouch body, a liquid-retaining sheet, and a finger fixing film attached thereto, and the pouch body is made of a laminate having a plastic film as a base material and a sealant layer, so that the pouch has water resistance. It is possible to store a liquid holding sheet impregnated with a chemical solution as a content.

The pouch body is composed of a protective layer and a base layer, and the sealant layers of both layers are placed facing each other, and the peripheral edges are sealed. The liquid holding sheet can be accommodated to form a sealed structure.

In addition, since the sealing portion of the peripheral portion has easy peelability between the protective layer and the base layer, the opening can be easily performed by peeling off the protective layer with fingers.

Since the stored liquid holding sheet is laminated on the base layer while being impregnated with the chemical solution, the whole liquid holding sheet is exposed after opening, and the impregnated chemical solution can be applied to the object. becomes possible.

Unsealing is carried out by peeling off the protective layer from the base layer. As the protective layer is peeled off, the protective layer is imparted with the property of curling inward, so that the side that was in contact with the drug is on the inside. It is possible to prevent the medicinal solution from adhering to fingers or the like when unsealing.

The finger fixation film is made of a plastic material, and both ends are adhered to the surface of the base layer that will be the outside of the pouch. By being able to apply the chemical solution impregnated in the liquid holding sheet to the object, it is possible to provide a pouch that allows the chemical solution to be applied to the required part of the object without causing the chemical solution to adhere to unintended parts. It is possible.

In particular, according to the second aspect of the present invention, the gas barrier layer is laminated in the laminate constituting the pouch body, so that the contents can be stored while preventing alteration and deterioration due to the influence of the environment. can improve sexuality. Alternatively, it is possible to prevent leakage of components, odors, and the like of the contents to the outside of the pouch.

In particular, according to the third aspect of the invention, the liquid-retaining sheet is made of non-woven fabric, and the non-woven fabric has a basis weight of 5 g/m ² to 200 g/m ² . is. In addition, the nonwoven fabric is effective for uniform application even when the chemical solution is applied after the package is opened.

In particular, according to the fourth aspect of the present invention, the base layer of the pouch body and the liquid retention sheet are laminated by welding, so that the liquid retention sheet can be removed when the liquid medicine is applied to the object after opening. It is not necessary to take out with tweezers or the like, and it is possible to apply easily using fingers, and it is possible to avoid adhesion of the chemical solution to fingers.

In particular, according to the fifth aspect of the invention, when the pouch is opened, the ratio of the area of the liquid holding sheet to which the liquid holding sheet can be coated with the chemical solution is in the range of 60% to 100%. , a sufficient amount of chemical solution can be applied.

Moreover, according to the sixth aspect of the invention, the finger fixing film is detachable, so that the pouch can be made more 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 portion of the pouch body is in the range of 5 N/15 mm to 25 N/15 mm. Thus, it is possible to prevent the seal from being opened by an external force during transportation or handling without impairing the easy peel property.

According to the eighth aspect of the invention, the inner curl of the protective layer is curled at least two times or more when unsealing, so that the chemical solution is caught inside the protective layer and can It is possible to avoid adhesion of the chemical solution to the

FIG. 1 is a perspective (partially see-through) schematic diagram 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 cross-sectional view of the central portion of the pouch for explaining how the pouch according to the present invention is opened. FIG. 4 is a perspective (partially see-through) schematic diagram for explaining how the protective layer is separated and removed in the opening of the pouch according to the present invention. FIG. 5 is a perspective (partially see-through) schematic diagram for explaining how a finger is inserted into the gap between the finger fixing film and the base layer after opening the pouch according to the present invention. FIG. 6 is a perspective (partially see-through) schematic diagram for explaining how a chemical solution is applied after opening 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 6. 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 perspective (partially see-through) schematic diagram for explaining one embodiment of the pouch according to the present invention.

The pouch (100) according to the present invention comprises a pouch body (10), a liquid retaining sheet (20), and a finger fixing film (30) attached thereto. However, in the example shown in FIG. 1, since the liquid holding sheet (20) is housed in the pouch body (10), it cannot be seen directly from the outside of the pouch (100), so it is indicated by a broken line. Since the fixing film (30) is on the lower side of the pouch body (10), it is shown partly in broken lines and partly in solid lines.

In the pouch (100) according to the present invention, the pouch body (10) is composed of a laminate having a plastic film as a base material and a sealant layer. That is, the pouch body (10) consists of two laminates, and the two sealant layers are placed facing each other, and the seal portion (13) at the peripheral edge is sealed to form a bag.

As described above, the pouch body (10) is made of a laminate having a sealant layer with a plastic film as a base material, and by sealing the periphery with a seal, the pouch (100) has water resistance. It is possible to store and seal the liquid holding sheet (20) impregnated with the chemical liquid as the contents.

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 pouch body (10) consists of a laminate having a plastic film as a base material and a sealant layer. The pouch body (10) is composed of a protective layer (12) on one side and a base layer (11) on the other side. 13) is sealed to form a bag. The laminated body of the protective layer (12) on one side and the base layer (11) on the other side may not have exactly the same structure, and the materials can be selected and the thickness can be designed for each. can.

Now, regarding the pouch (100) according to the present invention, a description will be given of the materials that constitute it. 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.

In addition, in order to prevent deterioration and deterioration of the contents due to environmental conditions, improve storage stability, and conversely prevent leakage of the components of the contents to the outside, can be provided with a gas barrier layer. 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.

Further, in the present invention, when an easy-open mechanism is provided, the seal portions (13) on at least three sides of the pouch body (10) are sealed so as to be easily peelable, and the sealant layer is also easily peelable. material, or seal within the range of peel strength that allows easy peeling. The easy-opening mechanism based on this easy peel will be described later.

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.

In addition, in the pouch (100) according to the present invention, the seal part (13) at the peripheral edge of the pouch body (10) has easy peelability between the protective layer (12) and the base layer (11). This easy peeling property allows the pouch (100) to be easily opened with fingers.

The easy-to-open mechanism is based on easy peeling of the peripheral seal portion (13), and can be realized by adjusting the sealing conditions, for example, or by selecting and using an easy peel material. It is feasible. The easy-peel material may be provided on either the protective layer (12) side or the base layer (11) side as long as it does not impair the easy-peel property.

In devising the present invention, we have made extensive studies and found that the peel strength of the seal portion (13) at the peripheral edge of the pouch body (10) is in the range of 5 N/15 mm to 25 N/15 mm. It has been found that it is possible to avoid unforeseen situations such as opening of the seal due to external force due to transportation and handling.

Furthermore, the easy peeling mechanism is more preferably if the peel strength of the seal portion (13) at the peripheral edge of the pouch body (10) is in the range of 5 N/15 mm to 15 N/15 mm. If the tension exceeds 25 N/15 mm, the unsealability may be hindered.

In the case of the rectangular pouch of the example shown in FIG. 1, the locations where the peripheral seal portion (13) is provided with easy peelability may be three sides or all four sides. In the case of three sides, after peeling off the protective layer, the peeled protective layer can be connected on the remaining one side and left.In the case of four sides, after peeling off the protective layer, the protective layer is separated and can be removed. This will be described later in the description of FIGS. 3 and 4. FIG.

In the example shown in FIG. 2, the space (14) between the protective layer (12) and the base layer (11) of the pouch body (10) can accommodate and seal the liquid retaining sheet (20). It is shown that. A nonwoven fabric can be used as a material for the liquid holding sheet (20), which is laminated on the base layer (11) in a state in which it is impregnated with a chemical solution.

By using a nonwoven fabric for the liquid holding sheet (20), it is relatively inexpensive and suitable for impregnation with a chemical solution. In addition, the nonwoven fabric is flexible, and because it is a nonwoven fabric, it can be stored in the pouch body (10) in a state in which it sufficiently contains and retains the drug solution as the content, and in addition, after opening, it can be stored. It is also effective to easily achieve uniform application when applying the application chemical solution to the object to be applied.

However, in the example shown in FIG. 2, the space (14) containing the liquid holding sheet (20) is shown as an inflated space (14) containing air. 20) is housed and the air inside the pouch body (10) is degassed, the space (14) is filled with the liquid holding sheet (20) impregnated with the chemical solution. ).

The liquid holding sheet (20) can be made of nonwoven fabric, but the material is not particularly limited. For example, it is possible to use a nonwoven fabric made of fibers such as polyolefin, polyethylene terephthalate, cellulose, etc. as the liquid holding sheet (20).

Further, according to our investigation for the present invention, the basis weight of the non-woven fabric of the material of the liquid retaining sheet (20) is 5 g/m ² to 200 g/m ² , so that sufficient chemical liquid can be retained. It is possible. However, when the basis weight of the non-woven fabric is less than 5 g/m ² , it is difficult to retain a sufficient amount of the chemical solution, and the basis weight of the non-woven fabric exceeding 200 g/m ² is undesirable in terms of cost.

FIG. 3 is a schematic cross-sectional view of the central portion of the pouch for explaining how the pouch according to the present invention is opened.

The pouch is opened by peeling off the protective layer of the pouch body from the base layer. The surface of the liquid retention sheet (20) can be exposed by opening, and in the example shown in FIG. 3, the entire surface of one side of the liquid retention sheet (20) is exposed. The protective layer (20) is inwardly curled and remains continuous with the base layer (11) while being wound inwardly at the right end of the base layer.

As the protective layer (12) is peeled off, the protective layer (12) is endowed with the property of curling inwardly. The surface that was in contact with the inside of the package is not exposed and can be prevented from sticking to fingers when the package is opened.

For example, when laminating the laminate of the protective layer (12), the inward curling is performed by increasing the tension of the film on the inner surface of the pouch body (10), so that the inside of the laminate of the protective layer (12) is curled. This can be achieved by keeping the contraction stress in a stored state.

In particular, the inner curl of the protective layer (12) can be curled at least two times or more when unsealing. Chemical solution adhesion can be more effectively avoided. In the example shown in FIG. 3, the inward curl of the protective layer (12) shows a state of approximately two and a half turns of curl.

The finger fixation film (30) is made of a plastic material, and both ends (31) are adhered to the pouch outer side of the base layer (11). A finger can be inserted into the gap (32) to press the base layer to apply the chemical solution impregnated in the liquid holding sheet (20) to the object.

Also, the base layer (11) of the pouch body (10) and the liquid retaining sheet (12) can be laminated by welding. By being welded, the liquid retaining sheet (20) is fixed to the base layer (11).

Therefore, when applying the chemical solution to the object after opening, it is not necessary to take out the liquid holding sheet (20) using tweezers or the like, and it is possible to easily apply the chemical solution using fingers as it is, preventing the chemical solution from adhering to the fingers. can be avoided.

FIG. 4 is a perspective (partially see-through) schematic diagram for explaining how the protective layer is separated and removed in the opening of the pouch according to the present invention.

The protective layer (12) can be peeled off from the base layer (11) and can be separated and removed from the pouch body (10) in a state of being curled inwardly. In this case, the peripheral sealing portion (13) has the easy peeling mechanism on the four sides of the rectangle. Since the four sides have an easy peeling mechanism, the opening of the pouch (100) and the separation and removal of the protective layer (12) can be easily performed using fingers.

In the present invention, the separation and removal of the curled protective layer (12) is not essential. The work of applying the impregnated chemical solution is easier than when the protective layer (12) remains on the base layer (11) in the form of the example shown in FIG.

FIG. 5 is a perspective (partially see-through) schematic diagram for explaining how a finger is inserted into the gap between the finger fixing film and the base layer after opening the pouch according to the present invention.

The finger fixation film (30) is made of a plastic material, and both ends (31) are adhered to the outer side of the pouch body (10) of the base layer (11). The liquid holding sheet (20) is impregnated by inserting a finger into the gap (32) with the base layer (11) and indirectly pressing the liquid holding sheet (20) through the base layer (11). It is possible to apply the chemical solution to the object.

As the material for the finger fixing film (30), for example, a polyolefin film alone can be used, and if strength is required, it is also possible to laminate a stretched plastic film.

The finger fixing film (30) may be shaped like a belt as shown in FIG. 5, or may have the same shape and size as the base layer (11).

Also, the finger fixing film (30) can be detachable. This makes it possible to make the pouch highly convenient. The strength for that purpose is preferably in the range of 0.1N to 100N, more preferably 1N to 50N. However, if the tension is less than 0.1 N, there is a risk that the tension will come off when the chemical solution is applied after opening.

FIG. 6 is a perspective (partially see-through) schematic diagram for explaining how a chemical solution is applied after opening in one embodiment of the pouch according to the present invention.

A finger inserted into the gap (32) between the finger fixing film (30) and the base layer (11) can press the liquid holding sheet (20) through the base layer (11), thereby The chemical liquid impregnated in the liquid holding sheet (20) can be applied to a desired application target (50).

In addition, when the pouch (100) according to the present invention is opened, the ratio of the area of the liquid-retaining sheet (20) to which the liquid-retaining sheet (20) can be coated with the chemical solution can be in the range of 60% to 100%. can. If this ratio is less than 60%, the amount of medicinal ingredient to be applied is reduced, and the effect may be limited.

That is, the pouch (100) according to the present invention can be stored inside the non-woven fabric containing a chemical solution. This makes it possible to avoid the risk of contamination, and enables uniform application of the chemical solution only to the necessary areas.

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

An evaluation pouch was prepared and evaluated according to the evaluation items and evaluation method. The configuration of the evaluation pouch, evaluation items, and evaluation methods are as follows.

Evaluation pouch:
・Size of non-woven fabric of liquid holding sheet: 90 mm × 65 mm
・Size of base layer and protective layer: 100 mm x 75 mm
・Width of the sealing part on the periphery of the pouch body: 5 mm
・In order to impart curl to the inner side of the protective layer, the protective layer was dry-laminated by increasing the tension of the film to be the inner side of the pouch body.
Curl measurement was carried out by making a 10 cm x-shaped incision in the center of each A4 size sample and observing how many times the sample curled.

Evaluation items are as follows.
・Ease of opening:
The pouch body was opened with fingers and evaluated.
A good one was evaluated as ◯, and the others were evaluated as x.
・Chemical applicability:
A good/bad judgment was made by 30 panelists.
When 25 or more out of 30 evaluated that the ease of application was good, it was evaluated as ◯.
In addition, when there was a case in which the drug adhered to the hands, it was judged as x.

<Example 1>
The layer structure of the evaluation pouch is as follows.
・Protective layer:
From the outside of the pouch,
Polyethylene terephthalate film (thickness 12 μm)/aluminum foil (thickness 9 μm)/polypropylene-based easy peel material (manufactured by Mitsui Chemicals Tocello: TAF650C)
・Liquid retention sheet:
Polypropylene non-woven fabric (50 g/m ² )
・Base layer:
Inorganic compound deposited polyethylene terephthalate film (thickness 12 μm)/unstretched polypropylene (thickness 60 μm)
・Film for finger fixation:
Unstretched polypropylene (thickness 100 μm)
and
It is characterized by using a polypropylene-based easy-peel material as an easy-peel material.

<Example 2>
The layer structure of the evaluation pouch is as follows.
・Protective layer:
From the outside of the pouch,
Polyethylene terephthalate film (thickness 12 μm)/aluminum foil (thickness 9 μm)/polyethylene-based easy peel material (manufactured by Mitsui Chemicals Tohcello: TAF610C)
・Liquid retention sheet:
Polyethylene nonwoven fabric (50 g/m ² )
・Base layer:
Inorganic compound deposited polyethylene terephthalate film (thickness 12 μm)/unstretched polypropylene (thickness 60 μm)
・Film for finger fixation:
Polyethylene (thickness 100 μm)
and
It is characterized by using a polyethylene-based easy-peel material as an easy-peel material.

<Example 3>
The layer structure of the evaluation pouch is as follows.
・Protective layer:
From the outside of the pouch,
Polyethylene terephthalate film (thickness 12 μm)/aluminum foil (thickness 9 μm)/polypropylene/liquid retention sheet:
Polypropylene non-woven fabric (50 g/m ² )
・Base layer:
Polyethylene terephthalate film (thickness 12 μm)/aluminum foil (thickness 9 μm)/polypropylene-based easy peel material (manufactured by Mitsui Chemicals Tocello: TAF650C)
・Film for finger fixation:
Unstretched polypropylene (thickness 100 μm)
and
It is characterized by using a polypropylene-based easy-peel material as the easy-peel material on the base layer side.

<Example 4>
The layer structure of the evaluation pouch is as follows.
・Protective layer:
From the outside of the pouch,
Polyethylene terephthalate film (thickness 12 μm)/aluminum foil (thickness 9 μm)/unstretched polypropylene (weak seal)
・Liquid retention sheet:
Polypropylene non-woven fabric (50 g/m ² )
・Base layer:
Inorganic compound deposited polyethylene terephthalate film (thickness 12 μm)/unstretched polypropylene (thickness 60 μm: weak seal)
・Film for finger fixation:
Unstretched polypropylene (thickness 100 μm)
and
As an easy peeling mechanism, it is characterized by a weak seal on three sides of the periphery.

<Comparative Example 1>
The layer structure of the evaluation pouch is as follows.
・Protective layer:
From the outside of the pouch,
Polyethylene terephthalate film (thickness 12 μm)/aluminum foil (thickness 9 μm)/unstretched polypropylene (thickness 30 μm)
・Liquid retention sheet:
Polypropylene non-woven fabric (50 g/m ² )
・Base layer:
Inorganic compound deposited polyethylene terephthalate film (thickness 12 μm)/unstretched polypropylene (thickness 60 μm)
・Film for finger fixation:
Unstretched polypropylene (thickness 100 μm)
and
However, no mechanism for easy peeling between the protective layer and the base layer is provided, which is out of the scope of the present invention.

<Comparative Example 2>
The layer structure of the evaluation pouch is as follows.
・Protective layer:
From the outside of the pouch,
Polyethylene terephthalate film (thickness 12 μm)/aluminum foil (thickness 9 μm)/polyethylene (thickness 50 μm)
・Liquid retention sheet:
Polyethylene nonwoven fabric (60 g/m ² )
・Base layer:
Inorganic compound deposited polyethylene terephthalate film (thickness 12 μm)/polyethylene (thickness 100 μm)
・Film for finger fixation:
Polyethylene (thickness 100 μm)
and
However, no mechanism for easy peeling between the protective layer and the base layer is provided, which is out of the scope of the present invention.

<Comparative Example 3>
The layer structure of the evaluation pouch is as follows.
・Protective layer:
From the outside of the pouch,
Polyethylene terephthalate film (thickness 12 μm)/aluminum foil (thickness 9 μm)/polypropylene-based easy peel material (manufactured by Mitsui Chemicals Tocello: TAF650C)
・Liquid retention sheet:
Polypropylene non-woven fabric (50 g/m ² )
・Base layer:
Inorganic compound deposited polyethylene terephthalate film (thickness 12 μm)/unstretched polypropylene (thickness 60 μm)
・Film for finger fixation:
Unstretched polypropylene (thickness 100 μm)
and
However, the protective layer has no inward curling property, and is outside the scope of the present invention.

<Comparative Example 4>
A conventionally used pouch, in which a nonwoven fabric impregnated with a drug was housed and sealed, was used as an evaluation pouch. In other words, the pouch requires tweezers for taking out the pouch and does not consider a mechanism for preventing the chemical solution from adhering to unintended parts, which is different from the pouch according to the present invention.

Table 1 shows the evaluation results.

From the results shown in Table 1, Examples 1 to 4 according to the present invention were evaluated as ◯ in both the evaluation items of opening property and drug application property, but deviating from the provisions of the present invention. At least one of Comparative Examples 1 to 4 was evaluated as x, and it is clear that the example is superior.

Comparative Example 1 could be compared with Examples 1 and 4, and was poor in easy-openability and difficult to open.

Comparative Example 2 was comparable with Example 2, and was poor in easy-openability and difficult to open.

In Comparative Example 3, the protective layer was not imparted with an inward curling property, and the protective layer was an obstacle, making it difficult to apply the chemical.

Since Comparative Example 4 was different from the pouch according to the present invention, it required tweezers to take out the liquid holding sheet impregnated with the chemical solution, and the chemical applicability was evaluated as x.

In this manner, according to the present invention, a liquid holding sheet impregnated with a chemical solution is stored, and can be applied to a desired portion of an object without using tweezers or the like and without allowing the chemical solution to adhere to unintended portions. It was possible to verify that it is possible to provide a pouch that can be applied with a chemical solution.

REFERENCE SIGNS LIST 10 Pouch body 11 Base layer 12 Protective layer 13 Peripheral sealing portion 14 Space 20 Liquid retaining sheet 30 Finger fixing film 31・Both ends 32... Gap 40... Fingers 50... Object to be coated 100... Pouch

Claims (8)

is a pouch,
The pouch is composed of a pouch body, a liquid-retaining sheet, and a finger fixing film attached thereto,
The pouch body consists of a laminate having a plastic film as a base material and a sealant layer,
The pouch body is composed of a protective layer on one side and a base layer on the other side.
The sealing part of the peripheral part has easy peelability between the protective layer and the base layer,
A space between the protective layer and the base layer can contain and seal a liquid-retaining sheet,
The liquid holding sheet is impregnated with the chemical liquid and laminated on the base layer,
Unsealing is performed by peeling the protective layer from the base layer so that the surface of the liquid-retaining sheet can be exposed,
As the protective layer is peeled off, the protective layer is imparted with the property of curling inward,
The finger fixing film is made of a plastic material,
Both ends are glued to the surface of the base layer that will be the outside of the pouch,
A pouch characterized by being able to apply a chemical solution impregnated in a liquid-retaining sheet to an object by inserting a finger into the gap between the finger-fixing film and the base layer to press the base layer. 2. The pouch according to claim 1, wherein the laminate constituting the pouch body includes a gas barrier layer laminated thereon. The pouch according to claim 1 or 2, wherein the liquid-retaining sheet is made of nonwoven fabric, and the nonwoven fabric has a basis weight of 5 g/m ² to 200 g/m ² . 4. The pouch according to any one of claims 1 to 3, wherein the base layer of the pouch body and the liquid retaining sheet are laminated by welding. The ratio of the area of the liquid holding sheet to which the chemical solution can be applied is in the range of 60% to 100% with respect to the area of the liquid holding sheet when the pouch is opened. The pouch described in Crab The pouch according to any one of claims 1 to 5, wherein the finger fixing film is detachable. The easy-to-open mechanism is based on easy peeling of the sealing portion, and the peel strength of the sealing portion of the pouch body is in the range of 5 N/15 mm to 25 N/15 mm. 7. The pouch according to any one of 6. 8. The pouch according to any one of claims 1 to 7, wherein the inner curl of the protective layer curls at least two times when the pouch is opened.

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