JP2000255522A - Apparatus and method for impregnating freshness preserving agent on food packaging bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain equipment and method which do not create a maintenance and operation management problem in fixing a freshness keeping agent on a packaging bag. SOLUTION: This relates to equipment which attaches a freshness keeping agent to the inner face of a packaging film through a hot melt adhesive agent. A freshness keeping agent is attached to the inner face of a packaging film through a hot melt adhesive agent using freshness keeping agent attaching equipment comprising a mechanism for cutting a belt shape body 10 where a plurality of freshness keeping agents 11 are joined together continuously in one direction into single freshness keeping agents, a mechanism for dropping the single agents by chutes C in a single line or a plurality of lines, a mechanism for transporting a packaging film 20 applied with a hot melt adhesive agent in its inner face separately supplied to a position where a hot melt adhesive agent is attached, a positioning mechanism for receiving the single freshness keeping agents transported at a predetermined position, and heat fusing mechanism F, G for heat fusing and attaching the single freshness keeping agents to the inner face of the packaging film.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for applying a freshness preserving agent to packaging bags for foods and the like. More specifically,
For example, confectionery, coffee, yellow flour, cereal flour, beans, rice, mochi,
A method and an apparatus for packaging a food in which a freshness preserving agent to be stored in a packaging bag for foods such as ramen, ham, sausage or delicacy is fixed to the packaging bag, and the freshness preserving agent is attached to the inner surface of the packaging bag. About.

[0002]

2. Description of the Related Art Conventionally, freshness preserving agents for foods, such as oxygen scavengers and desiccants, are in the form of small bags, which are usually stored in a packaging bag together with the substance to be preserved without being fixed. Was often. In such a case, since the freshness preservative is not fixed, when the consumer or food processor opens the packaging bag, the freshness preservative is separated from the contents such as food (hereinafter sometimes simply referred to as food). And sometimes it failed. Therefore, fixing the freshness preservative to the packaging bag has been studied. JP-A-1-1393
No. 03 discloses a pressure-sensitive adhesive layer or an adhesive layer formed on one of the front and back surfaces of a separate bag, and a separate bag with the pressure-sensitive adhesive layer formed on the inner surface of the bag of the packaging material via a pressure-sensitive adhesive. A method of sticking is described. JP-A-6-127536 discloses that
A method is described in which an adhesive is adhered to a freshness retaining bag band, cut into individual freshness retaining bags, and fixed to a packaging film band via the adhesive for packaging. Japanese Patent Application Laid-Open No. 7-285523 discloses an adhesive layer forming apparatus for forming a plurality of adhesive layers at intervals on a continuously fed strip, and pressing a plurality of pouches against the adhesive layer of the strip. An apparatus for attaching a small bag to a belt-like body including a bonding apparatus that performs the bonding is described.

In a packaging machine such as a cup sealer, a hot-melt adhesive is dropped or sprayed on a packaging film corresponding to a predetermined fixed position on the inner surface of the packaging bag in advance, and the packaging machine performs the next cycle operation. A method of attaching a freshness preserving agent and automatically fixing it has come to be used.

In these methods, dropping or spraying of an adhesive or a hot-melt adhesive (hereinafter sometimes simply referred to as an adhesive) onto a freshness-maintaining agent or a packaging film usually involves dissolving the adhesive in a molten state. This is performed by an apparatus called a hot melt gun having a mechanism for discharging. However, when the method of dripping or spraying an adhesive with a hot melt gun is industrially implemented, solids are often clogged at the adhesive discharge portion of the hot melt gun, which makes it impossible to fix the freshness retaining agent due to defective discharge of the adhesive. There is. When a hot melt adhesive is used, the entire hot melt gun needs to be maintained at a high temperature, and a preheating time of about 30 minutes is required before starting operation to dissolve the hot melt adhesive. That is, in the conventional method, there are problems in maintenance and operation management in order to implement it industrially.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a method and an apparatus for fixing a freshness preserving agent to a packaging bag or a container, which have no problems in maintenance and operation management.

[0006]

Means for Solving the Problems The present inventors have found means for solving the above-mentioned problems in view of the above-mentioned problems of the prior art. That is, the following means are effective. (1) In a device for applying a freshness retaining agent to a food packaging bag, using a hot melt adhesive applied to the inner surface of a packaging film, a pressure heater for fixing a single freshness retaining agent transferred by a chute. A means for fixing using is provided. (2) One or two or more positioning shutters are provided for each single-row or multiple-row chute. (3) On each single-row or multi-row chute, one to three standby shutters are provided above the positioning shutter. (4) A crimping surface of a fixing crimping heater for fixing a single freshness retaining agent to a packaging film with a hot melt adhesive applied to the inner surface of the packaging film is defined.

[0007] The present invention relates to an apparatus used for the above solution. That is, the present invention is an apparatus for attaching a freshness retaining agent to the inner surface of a packaging film via a hot melt adhesive, and a mechanism for supplying a packaging film coated with a hot melt adhesive, a plurality of supplied A mechanism for cutting a band formed by continuous connection of a freshness preserving agent in one direction into a single freshness preserving agent, a hot melt adhesive for a packaging film by sliding the single freshness preserving agent down with a chute. A mechanism for transferring the single freshness-retaining agent transferred to a predetermined position, and a mechanism for attaching the single freshness-retaining agent to the inner surface of the packaging film by thermocompression bonding. , A freshness retaining agent impregnating device.

The packaging film of the present invention has a gas barrier property in which a hot-melt adhesive is applied to a surface forming an inner surface when forming a packaging bag (in this specification, it may be simply referred to as an inner surface). It is a film (it may be called a barrier film in this specification).

[0009] In the present invention, the packaging film is preferably made of a material having an inner surface having thermal adhesiveness and not being deteriorated at the melting temperature of the applied hot melt adhesive. A preferred material is a laminated film of a gas barrier material and a heat sealing material. Examples of the gas barrier material include a polyester film made of polyethylene terephthalate, a polyamide film made of nylon 66, nylon 6, or meta-xylylene adipamide, and a polypropylene film, and a stretched film made of the resin and a laminated film made of the resin. Is preferred. Examples of the heat-sealing material include low-density polyethylene, high-density polyethylene, and polypropylene.
Low density polyethylene is preferred.

As the hot melt adhesive, various thermoplastic resins such as polyethylene, polypropylene, polyisobutylene, polyamide, ethylene-vinyl acetate copolymer (EVA), glue, etc. are used. The one containing a copolymer as a main component is also suitable for standard tests of food additives under the Food Sanitation Law, and has a relatively high softening point and strong peeling strength.
preferable. The position where the hot melt adhesive is applied on the packaging film is a portion that does not cause any inconvenience in structure and handling when forming a packaging bag for food or the like, and may hinder the display and design of the packaging bag. There is no part.

[0011] The portion of the packaging film coated with the hot melt adhesive has an area required at a position necessary for each single freshness retaining agent to be applied with sufficient strength on the packaging film,
What is necessary is just to consist of required numbers. The shape of the hot melt adhesive applied surface can be selected from a circle, an ellipse, a square, a rectangle, and any other shape. The size in each shape of the hot melt adhesive applied surface, the short width is 2 to 20 mm,
Preferably, the short width is 5 to 10 mm. The hot-melt-adhesive-applied surface may be provided at one or more locations per freshness-maintaining agent. Also, a hot melt adhesive can be applied to the entire surface of the packaging film.

The strip of the present invention is a continuous body in which a plurality of freshness preserving agents are continuously connected in one direction. Each of the freshness-retaining agents forming the strip is made of a packaging material filled with an agent active in maintaining freshness, and the freshness-retaining agents are separated from each other by the packaging material. A single film or sheet, or a laminated film or sheet is used as the packaging material for forming the band.

The strip is cut at the packaging material section, which is the boundary of the individual freshness preservatives, to form a single freshness preservative. The cut single freshness preserving agent is slid down by an inclined chute and transferred to a position where the hot melt adhesive is applied to a separately supplied inner surface of the packaging film coated with the hot melt adhesive. You. The packaging film is supplied separately. Preferably, the packaging film is sent in synchronization with the transfer of a single freshness preservative.

The chute varies depending on the type of the packaging machine to which the attachment device is mounted.
Examples of the shape include a square cylinder, a semicylindrical cylinder, and an oval cylinder. The material of the chute includes plastic, iron, non-ferrous metal and the like. The inclination of the chute varies depending on the size of the freshness-retaining agent to be impregnated, but it is necessary to provide a slope for transferring the freshness-retaining agent in a short time and smoothly, preferably 30 to 60 °, more preferably 40 °. It is in the range of ~ 45 °. In addition to single-row chutes, multi-row chutes can be installed. The use of a multi-row chute can supply freshness-retaining agent to a plurality of lines with a packaging mechanism. In order to distribute the freshness preserving agent to the multi-row chute, a multi-row distribution chute is provided above the multi-row chute. Multi-row sorting chute
A chute provided with a rotary reciprocating mechanism for distributing a single freshness-retaining agent cut from a strip to each chute.

It is preferable to provide one or two or more positioning shutters for each single-row or multiple-row chute. The positioning shutter opens and closes in accordance with the supply of the packaging film so that the single freshness preserving agent is attached to a predetermined position on the inner surface of the packaging film. For each shoot,
Further, it is preferable to provide one to three standby shutters above the positioning shutter. The standby shutter opens and closes in accordance with the opening and closing of the positioning shutter so that each positioning shutter holds a single freshness preserving agent. The standby shutter can adjust the difference between the timing of distributing a single freshness preserving agent to each chute and the timing of attaching the single freshness preserving agent to the packaging film or opening and closing the positioning shutter. The transferred single freshness preserving agent is received in a predetermined position. The receiving position is a position that does not hinder the packaging and appearance of the packaging film of food or the like.

The single freshness preserving agent transferred to the position where the hot melt adhesive is applied to the packaging film is pressed from behind the packaging film by a heater via the packaging film. Thereby, a single freshness preservative is
It is fixed to the inner surface of the packaging film by a hot melt adhesive.

The mechanism for attaching a single freshness preservative to the inner surface of the packaging film by thermocompression bonding includes a pressing mechanism and a heating mechanism. The pressing mechanism is a mechanism that presses the heating mechanism to a single freshness retaining agent via the packaging film. If the heating mechanism is pressed against a single freshness preserving agent via the packaging film, the heating mechanism or the freshness preserving agent may be operated. The heating mechanism has one or more heating surfaces,
The heating surface is preferably a heater having a width of 2 to 20 mm, preferably 5 to 10 mm. The shape of the heating surface can be selected from a circle, an ellipse, a square, a rectangle, and other polygons. If the size of the freshness preservative is large, especially if the thickness is large, the gap may become large due to the relationship with the chute means. It is preferable to provide a pusher for extruding the freshness preserving agent.

The packaging film to which the single freshness preserving agent is fixed is subsequently transferred to a food packaging mechanism, and the food is stored and packaged with the surface to which the freshness preserving agent is attached as an inner surface.
It becomes a food package in which the freshness retaining agent is attached to the inner surface of the packaging bag. By combining a known packaging machine, preferably a cup sealer or a deep-drawing type automatic vacuum packaging machine, with the freshness retaining agent impregnating apparatus, the apparatus for manufacturing a packaging container for food or the like to which the freshness retaining agent is impregnated can be obtained.

The following is an example of a method of attaching a freshness-retaining agent to the inner surface of a packaging film using the above-described apparatus and forming a foodstuff package with the freshness-retaining agent attached thereto. First, in order to form a package in a packaging machine, a part of the packaging film in which the hot melt adhesive is applied to the inner surface of the barrier film is guided out of a film by using a roller provided in advance outside the packaging machine as a guide. By the operation signal of (1), only the size for one molding and one pitch are sent.

The above-mentioned packaging film is fed and the operation signal from the packaging machine is separately received at the timing of the completion of the film feeding, and supplied to the automatic loading machine by the automatic freshener preserving agent mounted on the packaging machine. Cut the strip-shaped package made of a plurality of freshness retaining agents continuously connected in one direction into a single freshness retaining agent, and with a chute attached to the freshness retaining agent fixing unit, also with a receiving and positioning device,
Heat, crimp and fix. Subsequently, when the packaging machine is a cup sealer, the packaging film to which the freshness preserving agent is attached is heat-sealed to the upper surface of a cup or the like previously filled with foods. Further, the cup is moved by the next operation, and the barrier film around the cup is trimmed to produce a cup-shaped food package.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments shown in the drawings will be described below. FIG. 1 is a conceptual diagram showing a food packing apparatus having a three-row × two-pitch seal according to the present invention. Plural freshness preservatives 11
Are continuously connected in one direction and are fed out through a guide roller 15 and cut by a cutter 16 into a single freshness preserving agent. The cut single freshness preservative is distributed and transferred by three rows of chutes C via multi-row sorting chutes B. On each shoot C,
Standby shutters D 'and E' and positioning shutters D and E are provided, and a single freshness preserving agent is opened and closed by a signal from the packaging machine to open and close each shutter.
E are sent three by three, that is, one per column. The positioning shutters D and E are in standby with the six freshness preserving agents, or in synchronization with the standby shutter D 'being closed upon completion of standby in the standby shutter E', and the standby shutter E '. Is released, and the positioning shutter means E waits for three freshness preserving agents. Immediately after the standby shutter means D 'standby is completed, the standby shutter means D' is released, and the positioning shutter means D waits for the freshness retaining agent.
On the other hand, the freshness preserving agent is supplied to the standby shutter means E 'and the freshness preserving agent is supplied to the standby shutter means D', and the apparatus enters a standby state for the next cycle.

The packaging film 20 having an inner surface coated with a hot-melt adhesive is separately fed through a guide roller 13 and has heaters 21 and 22 having a pressure-bonded surface of 6 mm in diameter, pressing mechanisms 23 and 24, and pushers 25 and 26. A single freshness retaining agent is attached by thermocompression bonding to the inner surface of the packaging film via the hot melt adhesive 40 by the thermocompression bonding mechanisms F and G composed of. The thermocompression bonding mechanisms F and G heat and press the packaging film 20 and the freshness preserving agent 11 by the operation signal from the packaging machine K at the same time as stopping the feeding of the packaging film 20 of the packaging machine K. The melt adhesive and the freshness retaining agent 11 are adhered, and the freshness retaining agent 11 is attached to the packaging film 20. Next, the packaging film 20 to which the freshness preserving agent 11 is attached is transferred to the upper portion of the tray by the automatic operation of the packaging machine and heat-sealed. The above series of operations are operated continuously and automatically.

[0023]

According to the present invention, a freshness preserving agent can be effectively and efficiently attached to a food packaging film. In addition, without using a large-scale apparatus such as a hot melt gun, the freshness retaining agent can be easily attached to the packaging film with the hot melt adhesive, and the apparatus can be simplified. Further, the apparatus of the present invention can be operated without requiring a special heating waiting time such as heating of a hot melt gun, and the maintenance is easier, and the operation rate is improved by safe and stable operation. The freshness retaining agent impregnating device of the present invention, by combining a known packaging machine, preferably a cup sealer machine or a deep drawing type automatic vacuum packaging machine,
This is an apparatus for manufacturing a packaging bag to which a freshness retaining agent is attached.

[0024] According to the present invention, a food package to which the freshness preserving agent is fixed is manufactured. When the package of the food manufactured according to the present invention is opened, the freshness retaining agent remains in the packaging bag even if any one end of the package is opened, so that it is difficult to separate the content such as food from the freshness retaining agent. Is prevented.

[0025]

[Brief description of the drawings]

FIG. 1 is a conceptual diagram showing one embodiment of a food packaging device according to the present invention.

FIG. 2 shows an embodiment of a band-shaped package made of a plurality of freshness preserving agents.

FIG. 3 shows an embodiment of a band-shaped package made of a plurality of freshness preserving agents.

FIG. 4 is a cross-sectional view of a strip-shaped package made of a freshness-retaining agent cut into a single freshness-retaining agent, which receives the freshness-retaining agent by a chute and is supplied to a predetermined position of a positioning chute to operate a heat-press bonding mechanism to maintain the freshness; Mode of Means for Fixing Agent to Inner Surface of Film

FIG. 5 is a side view of the same.

FIG. 6 is an embodiment in which a hot-melt adhesive is attached to a freshness maintaining agent.
Pieces

FIG. 7 is an embodiment in which a hot-melt adhesive is attached to a freshness-maintaining agent. The hot-melt adhesive-attached surface is a rectangle of 3 mm × 30 mm.

FIG. 8 is an embodiment in which a freshness preserving agent is attached to a packaging film.

FIG. 9 is an embodiment in which a freshness retaining agent is attached to the inner surface of a packaging film for sealing a tray-shaped container.

FIG. 10 shows an embodiment of a tray-shaped food package in which a freshness preserving agent is attached inside a packaging bag.

[0026]

[Explanation of symbols]

 A: belt-shaped package supply / cutting means B: multi-row sorting chute C: multi-row chute D, E: positioning shutter D ', E': standby shutter F, G: pressure bonding heater means H: packaging film supply means K ： Packing machine

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3E056 AA02 BA14 CA11 DA05 EA01 EA08 FE06 GA03 3E067 AA05 AA11 AB16 AB23 AB24 AB25 AC01 BA10C BA12B BB14C BB15C BB16C BC02B CA04 CA24 EA06 EE25 EE28 LA01 GB13 LA13 GB13 LA25 LA30 LT03 MC04

Claims (5)

[Claims] 1. A device for attaching a freshness-maintaining agent to the inner surface of a packaging film via a hot-melt adhesive, comprising a belt-shaped body formed by continuously connecting a plurality of supplied freshness-maintaining agents in one direction. A mechanism for cutting into a single freshness-maintaining agent, a mechanism for sliding down the single freshness-maintaining agent by single-row or multi-row chutes, and hot-pressing of a packaging film coated with a hot-melt adhesive on an inner surface separately supplied A mechanism for transferring the melted adhesive to the applied position, a positioning mechanism for receiving the transferred single freshness retaining agent at a predetermined position, and a single pressurizing agent that is thermally pressed to the inner surface of the packaging film. A freshness preserving agent adhering device comprising a thermocompression bonding mechanism for adhering. 2. The apparatus according to claim 1, wherein one or two or more positioning shutters are provided for each single-row or multi-row chute. 3. The apparatus according to claim 2, wherein each of the single-row and multi-row chutes is provided with one to three standby shutters above the positioning shutter. 4. The apparatus according to claim 1, wherein the thermocompression bonding mechanism comprises a heating mechanism having one or more heating surfaces having a width of 2 to 20 mm and a pressing mechanism. 5. A method for adhering a freshness-maintaining agent to the inner surface of a packaging film via a hot-melt adhesive, wherein a plurality of supplied freshness-maintaining agents are continuously connected in one direction to form a single band. Was cut into a freshness preserving agent, and the single freshness preserving agent was slid down by an inclined chute, and the hot melt adhesive of the packaging film coated with the hot melt adhesive on the separately supplied inner surface was applied. Transfer to location,
A method for applying a freshness retaining agent, comprising applying a single freshness retaining agent to the inner surface of a packaging film by thermocompression bonding.