JP4809953B2 - Filled package - Google Patents

Description

The present invention provides a filled package from the laminated film by the oxygen-absorbing layer and the rigid resin layer ing, excellent oxygen-absorbing property and the rigidity is maintained, even if by-products of oxygen absorption layer occurs The present invention relates to a filled package in which the component of the generated odor does not transfer to stored items such as food inside.

  In Japanese Utility Model Laid-Open No. 64-53075, a laminated film is bent into a cylindrical shape, and both side edges are overlapped to form an overlapping portion, and a strip-like non-seal that becomes a knob piece on the side edge on the outer surface side. After forming the vertical seal part by a plurality of easy-open seals in a state of leaving the part substantially parallel and filling the viscous liquid such as pasty food, the horizontal seal part by the easy-open seals at both ends in the longitudinal direction Is formed.

  JP 2004-527395 A describes an ultra-high oxygen barrier film, and a laminate having a high oxygen barrier property is described in JP-A-6-115569.

The film disclosed in the above Japanese translations of PCT publication No. 2004-527395 or Japanese Patent Application Laid-Open No. 6-1515569 has no description of the problem of the filled package and the idea for solving the problem, although the oxygen absorbing layer is described.
Japanese Utility Model Publication No. 64-53075 JP-T-2004-527395 Japanese Patent Application Laid-Open No. 6-1515569

  In the packing body disclosed in Patent Document 1 described above, it is inevitable that several percent of air enters the headspace when the filling object is filled, but the gas is replaced with nitrogen. However, since it is difficult to remove all oxygen, it is necessary to suppress deterioration of oxidation due to oxygen remaining inside.

  However, if the oxygen barrier resin alone is used to prevent oxidative degradation, the resin will have to be thick, and the film will be stiffened (stiffened), and the film will be caught by the former during bag making, making stable operation difficult. At the time of horizontal sealing, the heat of the seal is difficult to be transmitted at the portion where the vertical seal portion and the horizontal seal portion overlap, and there is a possibility that a sealing failure may occur.

The present invention has been made in view of the above-mentioned unsolved problems of the prior art, and includes an oxygen absorbing layer containing a polydiene and a metal salt catalyst capable of oxidizing a filled package to a moisture sensitive oxygen barrier resin, and the above The oxygen absorbing layer absorbs oxygen inside by having a gas barrier layer with a rigid resin layer inside the oxygen absorbing layer and a gas barrier layer with aroma barrier properties inside, and a sealant layer as the innermost layer. In addition, the rigid layer can maintain the rigidity of the bag itself, and even if a by-product is generated in the oxygen absorption layer, the generated odor component is blocked by the gas barrier layer having aroma barrier properties and the inside An object of the present invention is to provide a filled package that does not shift to stored items such as food.

In order to achieve the above-mentioned object, the filled packaging body according to the present invention includes a vertical seal portion in which a laminated film is bent into a cylindrical shape and overlapped on both side end portions, and both longitudinal end portions of the vertical seal portion. in the filling and packaging material with product is filled in a three-way seal bag having a transverse seal portion formed to intersect each said laminate film comprises an oxidizable polydiene and a metal salt catalyst to moisture sensitive oxygen barrier resin oxygen absorbing layer, and constitute a stretched substrate film to have a gas barrier layer having a fragrance barrier properties rigid resin layer on the inside to the outside of the oxygen absorbing layer by coextrusion casting, the substrate film after subjecting the printing on the back side, and bonds the base film and the sealant film by dry lamination, der those characterized by having a sealant layer as the innermost layer .

Here, the laminated film includes an oxygen-absorbing layer containing a polydiene (for example, functional polybutadiene) that can be oxidized to a moisture-sensitive oxygen barrier resin such as an ethylene-vinyl alcohol copolymer and polyamide, and a metal salt catalyst, and the oxygen-absorbing layer. The outer layer has a rigid resin layer such as polyethylene terephthalate, polybutylene terephthalate, moisture-proof cellophane, and polyamide, and the inner side has a gas barrier layer with aromatic barrier properties such as ethylene-vinyl alcohol copolymer and polyamide, and the innermost layer is polyethylene and polyamide. Etc. having a sealant layer.

  According to the filled package according to the present invention, the oxygen absorption layer can absorb internal oxygen, and the rigid layer can maintain the rigidity of the bag itself, and a by-product is generated in the oxygen absorption layer. Even so, the components of the generated odor do not migrate to the stored items such as food inside.

According to the filled package according to the present invention, beautiful printability can be achieved, and further, by using a stretched substrate film, the rigidity and other mechanical strength can be improved, and it can be broken during transportation and use. Bags and pinholes can be prevented.

  FIG. 1 is a perspective view of a filled packaging body according to the present invention, and FIG. 2 is an explanatory view showing an example of the filled packaging body manufacturing apparatus according to the present invention.

As shown in FIG. 1, the filling package 1 is manufactured from the laminated film 10 using a pillow packaging machine. The laminated film 10 has an oxygen absorbing layer containing a polydiene oxidizable to a moisture sensitive oxygen barrier resin and a metal salt catalyst, and a gas barrier layer having a rigid resin layer outside the oxygen absorbing layer and an aromatic barrier property inside. The innermost layer has a sealant layer, and can be thermally welded at a relatively low temperature of 110 to 180 ° C., preferably 120 to 130 ° C., and the seal strength of the heat welded portion can be stably adjusted to a predetermined value. it can.

  The filling package 1 forms an overlapped portion in which the laminated film 10 is bent into a cylindrical shape and the end portions on both sides are overlapped, and the tip of one side edge portion on the outer surface side in the overlapped portion The first vertical seal portion 2a is formed substantially in parallel with the strip-shaped non-seal portion 5 having a width (10 to 20 mm) that can be picked by a finger on the side, and the inner side of the first vertical seal portion 2a. The second vertical seal portion 2b is formed at a predetermined interval substantially in parallel with the (non-sealed portion side) to form a cylindrical body.

  Next, the cylindrical body is filled with a predetermined amount of filling material, and both the lateral seal portions 3 and 4 are formed so as to intersect the vertical seal portions 2a and 2b, respectively, and sealed.

The vertical seal portions 2a and 2b and the horizontal seal portions 3 and 4 are peeled off before the vertical seal portions 2a and 2b and the horizontal seal portions 3 and 4 are opened before taking out the material to be filled from the filling package 1. When opening, cohesive peeling easy opening property that the vertical seal portions 2a, 2b and the horizontal seal portions 3, 4 are easily peeled by simply pulling and pulling the strip-shaped non-seal portion 5 with a finger. It consists of a seal. The seal width of the vertical seal portions 2a and 2b is preferably less than 15 mm.

  The cohesive peel easy-open seal is such that the seal layer itself is broken and peeled off, and no stringing occurs during peeling. Therefore, there is no possibility of mixing in the filling material. In addition, the seal strength is stable with a smooth peeling feeling, and the temperature dependency is very small. Furthermore, a pure white peeling mark is generated on the peeling surface. Since this white peeling trace can be visually confirmed by peeling whether or not the seal is properly formed, it can also be used for checking the sealing state in the packaging process. As a result, the reliability of the filling object is maintained.

  Examples of the filling material include viscous materials such as ketchup, mayonnaise, and flower paste, liquids such as soft drinks, and solid materials such as frozen dumplings. In particular, a viscous material that has fluidity at the time of filling and can maintain the shape-retaining property is excellent in filling and packaging in the form of use at room temperature or after refrigeration after packaging.

The moisture-sensitive oxygen barrier resin of the oxygen absorption layer constituting the laminated film 10 is polyamide, the rigid resin layer is polyamide and / or ethylene-vinyl alcohol copolymer, and the gas barrier layer having aroma barrier characteristics is ethylene-vinyl alcohol copolymer. The coalesced and sealant layers are polyethylene or polypropylene, and when the above laminated structure is integrally molded by coextrusion inflation method, the oxidization of the stored items can be prevented, the odor of the stored items can be prevented, and the rigidity as a bag can be maintained. So there is no risk of bag breakage or pinholes during transportation or use.

Further, the moisture-sensitive oxygen barrier resin of the oxygen absorption layer is polyamide, the rigid resin layer is polyethylene terephthalate and / or polybutylene terephthalate, the gas barrier layer having an aromatic barrier property is an ethylene-vinyl alcohol copolymer, and the sealant layer is polypropylene. By integrally forming the above laminated structure by coextrusion inflation method, the rigid layer is excellent in oxygen barrier property, heat resistance and non-moisture permeability as well as rigidity. Therefore, a package that can withstand retort sterilization of 130 degrees or more can be obtained.

An oxygen absorbing layer comprising a polydiene oxidizable to a moisture sensitive oxygen barrier resin and a metal salt catalyst, and a stretched substrate having a gas barrier layer having a rigid resin layer inside and an aromatic barrier property inside the oxygen absorbing layer. The material film is constructed by co-extrusion casting, and after printing on the back side of the base film, the base film and the sealant film are bonded by dry lamination to improve rigidity and other mechanical strength. In addition, bag breakage and pinholes during transportation and use can be prevented.

  In addition, an oxygen absorbing layer containing a oxidizable polydiene and a metal salt catalyst on a moisture sensitive oxygen barrier resin, and a film in which an ethylene-vinyl alcohol copolymer is disposed on both sides of the oxygen absorbing layer are formed by coextrusion casting. By adhering the above film and the rigid resin layer polyethylene terephthalate and / or polybutylene terephthalate by dry lamination, and further adhering the above film and sealant film by dry lamination, the rigid layer has oxygen barrier properties as well as rigidity. It is excellent in heat resistance and non-moisture permeability, and can achieve beautiful printability.

  In addition, an oxygen absorbing layer containing a oxidizable polydiene and a metal salt catalyst on a moisture sensitive oxygen barrier resin, and a film in which an ethylene-vinyl alcohol copolymer is disposed on both sides of the oxygen absorbing layer are formed by coextrusion casting. By adhering the above-mentioned film and the aromatic polyamide, which is a rigid resin layer, by dry lamination, a film having an excellent balance of rigidity and oxygen barrier property and heat resistance can be obtained.

  In addition, an oxygen absorbing layer containing a oxidizable polydiene and a metal salt catalyst on a moisture sensitive oxygen barrier resin, and a film in which an ethylene-vinyl alcohol copolymer is disposed on both sides of the oxygen absorbing layer are formed by coextrusion casting. By adhering the above-mentioned film and stretched polyethylene, which is a rigid resin layer, with excellent moisture resistance by dry lamination, it has a moisture-proof layer on the outside, so that it is susceptible to moisture, such as dry food, electronic parts, fishing bait What is suitable as a storage package is obtained.

  Next, the method for producing a filled package according to the present invention will be described by taking as an example the case where the filled package of the present embodiment is produced using a pillow packaging machine 110 as shown in FIG.

(1) FIG. 2 shows the time when the feeding of the laminated film 10 is completed during steady operation. From the first horizontal sealing machine 116 and the second horizontal sealing machine 117 which can be opened and closed to the ironing part 8 which is closed and flattened by closing the openable and non-opening ironing roll 115 and squeezing the upper open part side of the filling package 1a before separation. The horizontal sealing machine is closed and the welded portion of the easy-opening seal strength is formed in the region that becomes the lower horizontal seal portion 4 and the region that becomes the upper horizontal seal portion 3 sequentially from the upstream side to the downstream side, and can be opened and closed The press / cutter 118 is opened, and the manufactured filled package 1 is dropped onto the conveyor 130.

  The first horizontal sealing machine 116 and the second horizontal sealing machine 117 can set welding conditions independently of each other. The first horizontal sealing machine 116 and the second horizontal sealing machine 117 have substantially the same welding pressure, and the welding temperature of the first horizontal sealing machine 116 and the welding temperature of the second horizontal sealing machine 117 provide a cohesive peel easy-open seal. By setting the temperature, an area to be the upper horizontal seal portion 3 and an area to be the lower horizontal seal portion 4 having easy-openability are formed simultaneously.

(2) After the above (1), a predetermined amount of an object to be filled W is introduced from the hopper 111 and sequentially filled into the cylindrical body 7.

(3) After opening the squeezing roll 115, the first horizontal sealing machine 116 and the second horizontal sealing machine 117, the feed roll 114 is rotated, so that the cylindrical body 7 and the following are continued together with the pre-separation filling package 1a. The laminated film 10 is fed out by a predetermined length.

  The fed laminated film 10 is guided to the former 112 through a plurality of feeding rolls 120 and 121, and is curved into a cylindrical shape while passing through the former 112, and is overlapped on both side edges (see FIG. 2) is formed. Next, the overlapped portion 6 is heat-welded while passing through the vertical sealing machine 113, and the vertical seal portions 2a and 2b having easy-open seal strength remain inside the band-shaped non-seal portion 5 that becomes a knob piece. A continuous cylindrical body 7 is formed which is formed substantially parallel to the part.

  On the other hand, when the portion of the cylindrical body 7 filled with the filling W passes through the ironing roll 115, the ironing roll 115 is closed and the upstream side of the filling W in the tubular body 7 is ladderd. And flattened to form the ironing portion 8.

(4) The first horizontal sealing machine 116 and the second horizontal sealing machine 117 are closed, and the ironing portion 8 is thermally welded, whereby the upper horizontal sealing portion 3 and the lower horizontal sealing portion 4 become areas. A welded part made of is formed to produce a pre-separated filled package 1a.

(5) The press and cutter 118 is closed, and the region to be the lower horizontal seal portion 4 and the region to be the upper horizontal seal portion 3 which are welded portions to which the pre-separation filled package 1a is connected are clamped. The boundary between the two is divided into two, and the filling package 1 is dropped onto the conveyor 130.

It is a perspective view of the filling packaging body which concerns on this invention. It is explanatory drawing which shows an example of the manufacturing apparatus of the filling packaging body which concerns on this invention.

DESCRIPTION OF SYMBOLS 1 Filling package 2a, 2b Vertical seal part 3, 4 Horizontal seal part 5 Strip-shaped non-seal part

Claims (1)

A three-sided seal bag having a vertical seal part in which a laminated film is bent in a cylindrical shape and overlapped on both side end parts, and a horizontal seal part formed by intersecting both longitudinal ends of the vertical seal part. in the filling and packaging material with product is filled in,
The laminated film is aerobic absorbing layer comprising an oxidizable polydiene and a metal salt catalyst to moisture sensitive oxygen barrier resin, and a gas barrier layer having a fragrance barrier properties rigid resin layer on the inside to the outside of the oxygen absorbing layer The stretched base film is constituted by co-extrusion casting, and after printing on the back surface of the base film, the base film and the sealant film are bonded by dry lamination, and the sealant layer is formed on the innermost layer. A filled package characterized by comprising:

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