JPS6011632B2 - Manufacturing method of oxygen absorber storage bag - Google Patents

Description

[Detailed description of the invention] The present invention relates to a method for manufacturing an oxygen absorber storage bag.

An oxygen absorber is a substance that is placed in a sealed container with food, etc. to absorb the oxygen in the sealed product and thereby improve the shelf life of the contents. It was stored in a bag made of a film-like packaging material made of a combination of paper or nonwoven fabric and perforated polyethylene film, or a film-like packaging material made of a combination of perforated polypropylene, paper, or nonwoven fabric and perforated polyethylene film. Because these bags are breathable, they are effective in increasing the effect of oxygen scavengers, that is, the oxygen absorption effect, but on the other hand, if they are left in the atmosphere after being manufactured, they will absorb oxygen from the atmosphere and become unusable. The drawback is that the oxygen absorption performance sometimes disappears.

Therefore, the inventor of the present invention overlapped a pair of packaging materials that are impermeable or difficult to permeate with gas and whose inner surfaces are heat-adhesive through a double-sided heat-adhesive oak material that has air permeability. and the oak material are sealed on the entire periphery to form a bag whose interior is partitioned into two chambers by the oak material, and one of the two chambers is further sealed with one of the packaging materials and the oak material. It is partitioned into two chambers by partially bonding them together, and one of the partitioned chambers houses an oxygen absorber.

We have previously devised an oxygen absorber storage bag in which the oxygen absorber is sealed when packaged, but when used, holes are punched at predetermined positions in the packaging material so that the oxygen absorbing effect can be exerted. {Aoi Gansho No. 52-1113208 (Refer to Urako Sho 59-3 Total No. 07)}. An object of the present invention is to provide a method for manufacturing the oxygen absorber storage bag according to the above invention.

That is, the gist of the present invention is to provide the above-mentioned method for manufacturing an oxygen scavenger storage bag, in which materials having different thermal bonding temperatures on the inner surfaces are selected and used as the pair of packaging materials, and the packaging material has a low thermal bonding temperature of the oak material. Further apply a heat-sealing material capable of low-temperature thermal bonding to the area to be bonded on the side facing the inner surface of the wood, and place a heat-sealing plate on the side of the oak wood that requires bonding and bond together. This method of manufacturing an oxygen absorber storage bag is characterized in that a cooling plate is placed on the side that should not be adhered to prevent adhesion. Hereinafter, the present invention will be explained in detail with reference to the drawings.

FIG. 1 is a schematic diagram showing the method of the present invention.

As shown in the first diagram, it is impermeable or difficult to permeate gas, and the inner surface (inner surface herein refers to the surface facing inside the bag when constructed into a bag body; the same applies hereinafter) is made of heat-adhesive material. First package 1, such as polyvinylidene chloride coated biaxially oriented polyester/medium density or high density polyethylene, polyvinylidene chloride coated biaxially oriented polyamide/medium density or high density polyethylene, polyvinylidene chloride coated biaxially oriented polyp. A laminated film of pyrene/medium-density or high-density polyethylene is unwound from the roll 2 of the first packaging material, while a double-sided heat-adhesive, air-permeable oak material 3 that does not permeate the oxygen scavenger, such as polyolefin-based A nonwoven fabric with double-sided heat-sealability (in this case, by changing the polyolefin content on both sides, the heat-sealing temperature between the side facing packaging material 1 and the other side is different, and packaging material 1
It is desirable that the heat-sealing temperature of the side surface facing the oak material is higher than the heat-sealing temperature of the other side surface) is unwound from the corrugated material roll 4, and the inner surface of the oak material 3 is partially coated with a coater 7 at a low temperature. Apply a heat-sealing agent that can be thermally bonded, such as a hot-melt adhesive containing ethylene/vinyl acetate copolymer as a component, or a solvent-based adhesive containing ethylene/vinyl acetate copolymer as a main component, and apply low-temperature heat. A bondable heat sealing material layer 8 is formed. Then, the inner surface of the web of the unwound first packaging material 1 is opposed to the outer surface of the web of the oak material 3, and both webs are overlapped and fed between the heat-sealing plates 10 and 11 in this state. On the other hand, a second packaging material 5, for example, a polyvinylidene chloride coated material, has a heat-adhesive inner surface that is impermeable or difficult to permeate to gas and can be heat-bonded at a lower temperature than the inner surface of the first packaging material. Stretched polyester/ethylene-vinyl acetate copolymer or ionomer, polyvinylidene chloride coated two-scale oriented polyamide/ethylene-vinyl acetate copolymer or ionomer, polyvinylidene chloride coated double-scale oriented polypropylene/ethylene-vinyl acetate copolymer or A first ionomer is unwound from the roll 6 of the second packaging material, and fed between three-sided heat seal plates 16 and 11 having a planar shape as shown in the second figure.
A multilayered material of oak wood 3 and first packaging material 1 is made to face each other. and,
Overlap the three parts between the three-sided heat seal plates 10 and 11,
Heat and pressurize with the three-sided heat-sealing plates 10 and 11 to seal the third
As shown in the figure, a bag body 16 whose interior is partitioned into two compartments is made by sealing on three sides. In the figure, 17 indicates a three-sided seal portion. Next, an appropriate amount of oxygen scavenger 18 is filled into the bag body 7 from the filling hopper 9.

Next, the bag 16 filled with the oxygen scavenger 18 is moved downward, and the partial heat-sealing plate 12 is applied to the outer surface of the second packaging material 5, and the outer surface of the first packaging material 1 is placed opposite thereto. A cooling support plate 13 is applied to the side surface and the second packaging material 5 and the material 3 are partially bonded to each other to form a partial bonding part 19, and on the other hand,
The space between the first packaging material 1 and Hajimura 3 is left unadhered.

Further, at the same time as the partial adhesion operation using the heat seal plate 12 and the cooling support plate 13, a bag body 162 is formed adjacent to the bag body 16 by sealing on three sides with the three side heat seal plates 10 and 11, and at the same time, a bag body 162 is formed adjacent to the bag body 16. , seal the top edge. After forming a continuous body of a plurality of oxygen scavenger storage bags as described above, the bags are separated into single bags using a cutter (not shown).

In the above-mentioned invention, if complete sealing cannot be achieved by the contact of the three-sided heat-sealing plates as shown in FIG. 1, the same contacting of the heat-sealing plates may be repeated in subsequent steps.

As described in detail above, according to the method of the present invention, a pair of packaging materials that do not allow gas to permeate or are difficult to permeate and have a heat-adhesive inner surface are made of air-permeable double-sided heat-adhesive oak wood. The packaging material and the oak material are stacked on top of each other at the entire periphery to form a bag whose interior is partitioned into two chambers by the oak material, and one of the two chambers is sealed. Furthermore, by partially gluing one of the packaging materials and the oak wood to each other, it is divided into two chambers, and one of the further partitioned chambers stores the oxygen absorber.The oxygen absorber storage bag is made of heat that can be bonded at low temperature. Partially apply the sealing material, layer the two types of packaging materials with oak wood in between, and heat and pressurize with a three-sided heat-sealing plate to seal on three sides.After storing the oxygen absorber, the partial sealing plate and cooling support plate are sealed. By pressing, one side of the packaging material and the gap between the holes are partially glued,
It can be manufactured efficiently online by forming a continuous body of a plurality of oxygen scavenger storage bags and then cutting them to separate them into single bags.

Further, according to the method of the present invention, it is possible to perform not only one example of filling as shown in FIG. 2 but also multiple rows of filling, and high-speed manufacturing can be realized.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing the steps of the method of the present invention, FIG. 2 is a plan view of a filling hopper, a three-sided heat-sealing plate, and a partial heat-sealing plate, and FIG. 3 is a plan view showing a three-sided sealed state. FIG. 4 is a plan view showing a state in which an oxygen absorber is filled after sealing on three sides, and FIG. 6 is a plan view showing a state in a partially sealed state. 1, 3... Packaging material, 5... Oak wood, 8... Heat sealing material capable of low temperature thermal bonding, 10, 11... Three-sided heat sealing plate, 12... Partial heat sealing plate, 13 ...Cooling support plate, 18...Oxygen absorber. Traditional figure 1 figure 2 figure 3 heron figure fin figure 5

Claims (1)

[Claims] 1. A pair of packaging materials that do not permeate gas or are difficult to permeate and have a heat-adhesive inner surface are superimposed via a breathable double-sided heat-adhesive filter material, and the entire periphery is formed between the packaging material and the filter material. A bag body is constructed in which the interior is partitioned into two chambers by the filter material, and one of the two chambers is further divided into two chambers by partially adhering one of the packaging materials and the filter material to each other. In the method for manufacturing an oxygen absorber storage bag, the bag is divided into two compartments and an oxygen absorber is stored in one of the further partitioned chambers, in which materials having different thermal bonding temperatures on the inner surfaces are selected and used as the pair of packaging materials. Then, a heat sealing material capable of low-temperature thermal bonding is further applied to the area where the filter medium should be partially bonded on the side facing the inner surface of the packaging material where the heat bonding temperature is low, and heat is applied to the side of the filter medium that requires bonding. A method for manufacturing an oxygen absorber storage bag, characterized in that a sealing plate is pressed and bonded, and a cooling plate is pressed and bonded to a side that should not be bonded to prevent bonding.