JP2002308320A - Air-permeable packaging material - Google Patents

Air-permeable packaging material

Info

Publication number
JP2002308320A
JP2002308320A JP2001121083A JP2001121083A JP2002308320A JP 2002308320 A JP2002308320 A JP 2002308320A JP 2001121083 A JP2001121083 A JP 2001121083A JP 2001121083 A JP2001121083 A JP 2001121083A JP 2002308320 A JP2002308320 A JP 2002308320A
Authority
JP
Japan
Prior art keywords
layer
vinyl acetate
plastic film
packaging material
ethylene
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
JP2001121083A
Other languages
Japanese (ja)
Inventor
Shigeru Takeshita
茂 竹下
Yuji Honda
祐二 本田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dai Nippon Printing Co Ltd
Original Assignee
Dai Nippon Printing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dai Nippon Printing Co Ltd filed Critical Dai Nippon Printing Co Ltd
Priority to JP2001121083A priority Critical patent/JP2002308320A/en
Publication of JP2002308320A publication Critical patent/JP2002308320A/en
Withdrawn legal-status Critical Current

Links

Landscapes

  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
  • Wrappers (AREA)
  • Laminated Bodies (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide an air-permeable packaging material which is excellent in workability and air-permeability at the time of manufacture, and at the same time, has a favorable appearance, and is excellent in hygienic fields. SOLUTION: This air-permeable packaging material is constituted of a plastic film layer, a picture layer, a bonding layer, a reinforcing material layer, and an ethylene-vinyl acetate copolymer layer in this order from the external surface. In this case, the vinyl acetate percentage content of the ethylene-vinyl acetate copolymer layer is 6 to 30 wt.%. Then, fine pores are formed on the plastic film layer and the bonding layer. The air-permeable packaging material can be used for the packaging of a desiccant, a free-oxygen absorber, an aromatic agent, an insecticide or the like.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は乾燥剤、吸湿剤、脱
酸素剤、芳香剤、防虫剤等の包装に使用できる通気性包
装材に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a breathable packaging material which can be used for packaging desiccants, desiccants, oxygen absorbers, fragrances, insect repellents and the like.

【0002】[0002]

【従来の技術】従来、乾燥剤、脱酸素剤等の包装に使用
する通気性包装材としては、例えば、特開2000−3
18094号公報に記載されているような、プラスチッ
クフィルム層と接着層と紙層と酢酸ビニル含有率が6〜
30重量%のエチレン−酢酸ビニル共重合体層からな
り、プラスチックフィルム層と接着層に細孔が形成され
た構成、ないしはプラスチックフィルム層と接着層と紙
層と酢酸ビニル含有率が6〜30重量%のエチレン−酢
酸ビニル共重合体層と格子網状材層と酢酸ビニル含有率
が6〜30重量%のエチレン−酢酸ビニル共重合体層か
らなり、プラスチックフィルム層と接着層に細孔が形成
された構成のものが知られている。
2. Description of the Related Art Conventionally, as a breathable packaging material used for packaging a desiccant, an oxygen scavenger, etc., for example, Japanese Patent Application Laid-Open No. 2000-3
No. 18094, the plastic film layer, the adhesive layer, the paper layer and the vinyl acetate content of 6 to
30% by weight of an ethylene-vinyl acetate copolymer layer having pores formed in a plastic film layer and an adhesive layer, or a plastic film layer, an adhesive layer, a paper layer and a vinyl acetate content of 6 to 30% by weight. % Of an ethylene-vinyl acetate copolymer layer, a lattice network layer, and an ethylene-vinyl acetate copolymer layer having a vinyl acetate content of 6 to 30% by weight, and pores are formed in the plastic film layer and the adhesive layer. A known configuration is known.

【0003】しかしながら、前者の構成の通気性包装材
では、石灰等の乾燥剤を包装した場合に、紙層の強度が
大きくないので石灰等の乾燥剤の塊により突き破られて
内容物が漏れだすおそれがあるという欠点があり、後者
の構成の通気性包装材では、前者の構成に更にエチレン
−酢酸ビニル共重合体層と格子網状材層が積層されてい
る構成であるため、強度的には優れ石灰等の乾燥剤の塊
により突き破られることはないが、材料費が高くなると
ともに製造工程が煩雑となるのでコストアップになると
いう欠点がある。
[0003] However, in the former air-permeable packaging material, when a desiccant such as lime is packaged, the strength of the paper layer is not so high that the permeable material is pierced by a lump of desiccant such as lime and the contents leak. There is a drawback that there is a danger that the air-permeable packaging material of the latter configuration has a structure in which an ethylene-vinyl acetate copolymer layer and a lattice network material layer are further laminated on the former configuration. It is excellent in that it is not broken through by a lump of desiccant such as lime, but has the disadvantage that the material cost is high and the manufacturing process is complicated, so that the cost is increased.

【0004】[0004]

【発明が解決しようとする課題】本発明の目的は、製造
時の加工性及び通気性に優れるとともに、外観がよく衛
生面で優れた通気性包装材を提供することにある。
SUMMARY OF THE INVENTION An object of the present invention is to provide a breathable wrapping material which is excellent in processability and air permeability during production, and which has good appearance and good hygiene.

【0005】[0005]

【課題を解決するための手段】外面から順にプラスチッ
クフィルム層と絵柄層と接着層と強化材層と酢酸ビニル
含有率が6〜30重量%のエチレン−酢酸ビニル共重合
体層からなり、プラスチックフィルム層と接着層に細孔
が形成された構成とすることにより、酢酸ビニル含有率
が6〜30重量%のエチレン−酢酸ビニル共重合体層は
通気性が大きく細孔を形成しなくても通気性包装材とし
て必要な通気性が得られるので、強化材層の内面側の層
に細孔を形成する工程が省略でき、通気性包装材の製造
工程を簡略化することができる。また、絵柄層が外面に
露出しないので衛生面で優れた通気性包装材とすること
ができる。
The plastic film comprises a plastic film layer, a picture layer, an adhesive layer, a reinforcing material layer, and an ethylene-vinyl acetate copolymer layer having a vinyl acetate content of 6 to 30% by weight. By having a structure in which pores are formed in the layer and the adhesive layer, the ethylene-vinyl acetate copolymer layer having a vinyl acetate content of 6 to 30% by weight has a large air permeability and air permeability even if pores are not formed. Since the air permeability required for the permeable packaging material is obtained, the step of forming pores in the inner layer of the reinforcing material layer can be omitted, and the manufacturing process of the permeable packaging material can be simplified. Further, since the picture layer is not exposed to the outside, a breathable packaging material excellent in hygiene can be obtained.

【0006】上記の通気性包装材において、接着層が酢
酸ビニル含有率が6〜30重量%のエチレン−酢酸ビニ
ル共重合体の熱溶融押出層からなる構成とすることによ
り、接着層の通気性を大きくできるとともに、プラスチ
ックフィルム層と強化材層との積層工程の作業性を良く
することができる。
In the above breathable packaging material, the adhesive layer is constituted by a hot-melt extruded layer of an ethylene-vinyl acetate copolymer having a vinyl acetate content of 6 to 30% by weight. And the workability of the laminating step of the plastic film layer and the reinforcing material layer can be improved.

【0007】上記の通気性包装材において、強化材層を
合成繊維混抄紙、不織布、格子網状材とすることによ
り、引き裂きおよび突き破りに対する強度が大きくな
り、内部に収納される乾燥剤等の塊により突き破られて
内容物が漏れ出すのを確実に防止することができる。
[0007] In the above-mentioned breathable packaging material, the reinforcing material layer is made of synthetic fiber mixed paper, non-woven fabric, or lattice mesh material, so that the strength against tearing and piercing is increased, and the lumps of desiccant and the like stored inside are increased. It is possible to reliably prevent the contents from leaking out.

【0008】上記の通気性包装材において、プラスチッ
クフィルム層を2軸延伸プラスチックフィルムとするこ
とにより、水分、油分等が内部に浸透することのない外
観の優れた包装材とすることができる。
In the above-described breathable packaging material, by forming the plastic film layer as a biaxially stretched plastic film, it is possible to obtain a packaging material having an excellent appearance in which moisture, oil and the like do not penetrate inside.

【0009】[0009]

【発明の実施の形態】以下、図面を用いて本発明の実施
の形態を説明する。図1は本発明の実施形態の構成を示
す断面図であって、1はプラスチックフィルム層、2は
接着層、3は強化材層、4はエチレン−酢酸ビニル共重
合体層、5は細孔、6は絵柄層をそれぞれ表す。
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view showing a configuration of an embodiment of the present invention, wherein 1 is a plastic film layer, 2 is an adhesive layer, 3 is a reinforcing material layer, 4 is an ethylene-vinyl acetate copolymer layer, and 5 is pores. , 6 represent picture layers, respectively.

【0010】本発明の実施形態の構成は、図1に示すと
おり、外面から順にプラスチックフィルム層1と接着層
2と強化材層3と酢酸ビニル含有率が6〜30重量%の
エチレン−酢酸ビニル共重合体層4が積層され、プラス
チックフィルム層1及び接着層2には貫通する細孔5が
形成され、絵柄層6はプラスチックフィルム層1の内面
に形成されている構成であり、プラスチックフィルム層
1は2軸延伸フィルムであり、接着層2はポリオレフィ
ン樹脂の溶融押出層であり、強化材層3は合成繊維混抄
紙、不織布、格子網状材である。実施形態では、エチレ
ン−酢酸ビニル共重合体層4には細孔5は形成されてい
ないが、酢酸ビニル含有率が6〜30重量%のエチレン
−酢酸ビニル共重合体は通気性が大きく、細孔5を形成
しなくとも乾燥剤、脱酸素剤等を包装するために必要な
通気性は得られるものである。通気性及び熱接着性を考
慮すると、エチレン−酢酸ビニル共重合体層4の厚さは
10〜20μmとするのが好ましい。
As shown in FIG. 1, an embodiment of the present invention comprises, in order from the outer surface, a plastic film layer 1, an adhesive layer 2, a reinforcing material layer 3, an ethylene-vinyl acetate having a vinyl acetate content of 6 to 30% by weight. The structure is such that a copolymer layer 4 is laminated, through holes 5 are formed in the plastic film layer 1 and the adhesive layer 2, and a picture layer 6 is formed on the inner surface of the plastic film layer 1. 1 is a biaxially stretched film, the adhesive layer 2 is a melt-extruded layer of a polyolefin resin, and the reinforcing material layer 3 is a synthetic fiber mixed paper, a nonwoven fabric, and a lattice mesh material. In the embodiment, the pores 5 are not formed in the ethylene-vinyl acetate copolymer layer 4, but the ethylene-vinyl acetate copolymer having a vinyl acetate content of 6 to 30% by weight has high air permeability and fineness. Even if the holes 5 are not formed, the air permeability required for packaging the desiccant, the oxygen scavenger, and the like can be obtained. In consideration of air permeability and thermal adhesiveness, the thickness of the ethylene-vinyl acetate copolymer layer 4 is preferably set to 10 to 20 μm.

【0011】実施形態の通気性包装材においては、外面
にプラスチックフィルム層1が積層されるとともに強化
材層3が積層された構成となっているので、包装材の外
観が優れるとともに強度が優れるので、内部に収納され
る乾燥剤等の塊により突き破られて内容物が漏れ出して
くることがなく、且つ表面に水分や油分等が付着した場
合でも内部に浸透してくることがない。また、絵柄層6
はプラスチックフィルム層1の内面に形成されており外
面に露出していないので衛生面で優れたものとなってい
る。
In the breathable packaging material of the embodiment, since the plastic film layer 1 is laminated on the outer surface and the reinforcing material layer 3 is laminated, the appearance of the packaging material and the strength are excellent. In addition, the contents do not leak out by being pierced by a lump of a desiccant or the like stored in the inside, and do not permeate into the inside even when moisture, oil, or the like adheres to the surface. Also, picture layer 6
Is formed on the inner surface of the plastic film layer 1 and is not exposed on the outer surface, which is excellent in hygiene.

【0012】プラスチックフィルム層1としては、強度
的に優れ光沢のよい2軸延伸プラスチックフィルムを使
用するのが好ましい。2軸延伸プラスチックフィルムと
しては2軸延伸ポリエチレンテレフタレート、2軸延伸
ポリプロピレン、2軸延伸ナイロン等が使用できる。接
着層2としては、ポリオレフィン樹脂の溶融押出層が使
用され、押出ラミネーションによりプラスチックフィル
ム層1と強化材層3が積層されるのが普通であるが、ウ
レタン系の接着剤等を使用してドライラミネーションに
よりプラスチックフィルム層1と強化材層3を積層して
もよい。また、接着層2として酢酸ビニル含有率が6〜
30重量%のエチレン−酢酸ビニル共重合体を使用する
ことにより通気性をより大きくすることができる。
As the plastic film layer 1, it is preferable to use a biaxially stretched plastic film having excellent strength and good gloss. As the biaxially stretched plastic film, biaxially stretched polyethylene terephthalate, biaxially stretched polypropylene, biaxially stretched nylon or the like can be used. As the adhesive layer 2, a melt-extruded layer of a polyolefin resin is used, and the plastic film layer 1 and the reinforcing material layer 3 are usually laminated by extrusion lamination. However, the adhesive layer 2 is dried using a urethane-based adhesive or the like. The plastic film layer 1 and the reinforcing material layer 3 may be laminated by lamination. The adhesive layer 2 has a vinyl acetate content of 6 to
By using 30% by weight of the ethylene-vinyl acetate copolymer, the air permeability can be further increased.

【0013】プラスチックフィルム層1と接着層2に形
成する細孔5としては、直径が0.1〜2.0mmの孔
を10cm2 あたり10〜100個形成するのが好まし
い。細孔5は、プラスチックフィルム層1と強化材層3
とを熱溶融押出樹脂の接着層2にて積層した後に、プラ
スチックフィルム層1側から熱針により突き刺してプラ
スチックフィルム層1と接着層2を貫通する細孔5が形
成される。上記のようにプラスチックフィルム層1と接
着層2に細孔5を形成することにより、内面のエチレン
−酢酸ビニル共重合体層4は細孔を形成しなくとも通気
性が大きいので、乾燥剤、脱酸素剤等を包装するために
必要な通気性を得ることができる。
As the pores 5 formed in the plastic film layer 1 and the adhesive layer 2, it is preferable to form 10 to 100 holes having a diameter of 0.1 to 2.0 mm per 10 cm 2 . The pores 5 are composed of the plastic film layer 1 and the reinforcing material layer 3.
Are laminated on the adhesive layer 2 of the hot-melt extruded resin, and then pierced from the plastic film layer 1 side with a hot needle to form pores 5 penetrating the plastic film layer 1 and the adhesive layer 2. By forming the pores 5 in the plastic film layer 1 and the adhesive layer 2 as described above, the ethylene-vinyl acetate copolymer layer 4 on the inner surface has high air permeability without forming pores. The air permeability required for packaging the oxygen scavenger or the like can be obtained.

【0014】強化材層3としては、合成繊維混抄紙、不
織布、格子網状材が使用できる。合成繊維混抄紙は強度
の大きいものがよく、レーヨン繊維、木材繊維にポリエ
チレン、ポリプロピレン、ポリエステル、ナイロン等の
合成繊維を混抄したものが使用できる。不織布として
は、湿式不織布、乾式不織布のいずれも使用できるが、
コストの関係などから湿式不織布を使用するのが好まし
い。合成繊維混抄紙、不織布の厚さとしては坪量が20
〜50g/m2 のものが適当である。
As the reinforcing material layer 3, a synthetic fiber mixed paper, a nonwoven fabric, and a lattice mesh material can be used. The synthetic fiber mixed paper preferably has high strength, and a mixture of synthetic fibers such as polyethylene, polypropylene, polyester and nylon mixed with rayon fiber and wood fiber can be used. As the nonwoven fabric, any of a wet nonwoven fabric and a dry nonwoven fabric can be used,
It is preferable to use a wet nonwoven fabric from the viewpoint of cost and the like. Synthetic fiber mixed paper and nonwoven fabric have a basis weight of 20
Those of 〜50 g / m 2 are suitable.

【0015】格子網状材としては、例えば、メルタック
クロス(ハギワラ工業製)、日石ワリフ(日本石油化学
製)、クレネット(クラボー製)、ソフネット,ソフク
ロス(新日本ソフ製)等のポリエチレン、ポリプロピレ
ンなどからなるネット状物が使用できる。格子の間隔は
1〜5mmが適当であり、格子の間隔が6mm以上のと
きは内容物の塊がその間から突き破って出てきたり強度
が低下するので実用性に欠ける。最も好ましい間隔は2
〜4mmの範囲である。
As the lattice mesh material, for example, polyethylene such as Meltac Cloth (manufactured by Hagiwara Industries), Nisseki Warif (manufactured by Nippon Petrochemical), Clenet (manufactured by Crabeau), Softnet, Sofcloth (manufactured by Nippon Sofu) And a net-like material made of polypropylene or the like. The distance between the lattices is suitably 1 to 5 mm, and when the distance between the lattices is 6 mm or more, the lump of the contents breaks through the space between the lattices and the strength is reduced, so that the practicality is lacking. The most preferred interval is 2
44 mm.

【0016】エチレン−酢酸ビニル共重合体層4として
は、通気性が大きく且つ熱溶融押出適性の優れたものが
必要であり、酢酸ビニル含有率が6〜30重量%で、M
Iが5〜30のものが使用される。酢酸ビニル含有率が
6重量%以下のものでは透湿度が小さくなり通気性包装
材として好ましくない。一方、酢酸ビニル含有率が30
重量%以上のものでは、押出された皮膜の滑性が悪く製
品化が困難であり且つ酢酸ビニル臭が強くなるために好
ましくない。エチレン−酢酸ビニル共重合体層4として
酢酸ビニル含有率が6〜30重量%で、MIが5〜30
のエチレン−酢酸ビニル共重合体を使用することにより
通気性、加工性が優れるとともに、細孔を形成しなくと
も通気性包装材に必要な適度な通気性が得られる。
The ethylene-vinyl acetate copolymer layer 4 needs to have high air permeability and excellent suitability for hot melt extrusion, and has a vinyl acetate content of 6 to 30% by weight,
Those having an I of 5 to 30 are used. When the vinyl acetate content is 6% by weight or less, the moisture permeability becomes small, which is not preferable as a breathable packaging material. On the other hand, when the vinyl acetate content is 30
If the content is more than 10% by weight, the extruded film has poor lubricity and is difficult to commercialize, and the vinyl acetate odor becomes unfavorable. The ethylene-vinyl acetate copolymer layer 4 has a vinyl acetate content of 6 to 30% by weight and an MI of 5 to 30%.
By using the ethylene-vinyl acetate copolymer of (1), air permeability and processability are excellent, and an appropriate air permeability required for an air permeable packaging material can be obtained without forming pores.

【0017】エチレン−酢酸ビニル共重合層4の厚さと
しては10〜20μmとするの好ましい。エチレン−酢
酸ビニル共重合層4の厚さが10μmより薄いと、通気
性は大きくなるが、熱接着強度が弱くなって乾燥剤、脱
酸素剤等を包装した際の袋の強度が低下して問題とな
る。逆に、20μmより厚くなると、熱接着強度は強く
なるが通気性が低下するので好ましくない。
The thickness of the ethylene-vinyl acetate copolymer layer 4 is preferably 10 to 20 μm. If the thickness of the ethylene-vinyl acetate copolymer layer 4 is thinner than 10 μm, the air permeability increases, but the thermal adhesive strength is weakened, and the strength of the bag when packaging the desiccant, oxygen scavenger, etc. is reduced. It becomes a problem. Conversely, if the thickness is more than 20 μm, the heat bonding strength is increased, but the air permeability is undesirably reduced.

【0018】実施形態の通気性包装材は、乾燥剤、除湿
剤、脱酸素剤、芳香剤、防虫剤等を包装するのに適して
いるが、特に、乾燥剤、脱酸素剤の包装に適した通気性
包装材であり、この通気性包装材にて乾燥剤、脱酸素剤
を包装した包装体を食品と一緒に包装した場合に、絵柄
層が表面に露出しないので衛生面で優れるとともに、油
分、水分等が内部に浸透することのない外観の優れた乾
燥剤ないしは脱酸素剤の包装体とすることができる。
The breathable packaging material of the embodiment is suitable for packaging desiccants, dehumidifiers, oxygen absorbers, fragrances, insect repellents, etc., and is particularly suitable for packaging desiccants and oxygen absorbers. It is a breathable wrapping material, and when a package in which a desiccant and an oxygen scavenger are wrapped together with food is wrapped together with food, the picture layer is not exposed on the surface, so that it is excellent in hygiene, A desiccant or oxygen scavenger package having an excellent appearance in which oil, moisture and the like do not permeate into the interior can be obtained.

【0019】実施例1 厚さ12μの2軸延伸ポリエチレンテレフタレートフィ
ルムの一方の面に、ウレタン系の緑色インキを使用して
グラビア印刷により絵柄層を形成し、その絵柄層面と格
子網状材(ハギワラ工業製メルタッククロス)とを10
μの酢酸ビニル含有率が19重量%でMIが15のエチ
レン−酢酸ビニル共重合体樹脂の押出ラミネーシヨンに
より積層した後、2軸延伸ポリエチレンテレフタレート
フィルム面から直径0.5mmの針で突き刺して10c
2 あたり30個の細孔を形成し、その格子網状材面に
酢酸ビニル含有率が19重量%でMIが15のエチレン
−酢酸ビニル共重合体樹脂を15μの厚さに押出ラミネ
ーシヨンして、2軸延伸ポリエチレンテレフタレートフ
ィルム12μ/絵柄層/エチレン−酢酸ビニル共重合体
10μ/格子網状材/エチレン−酢酸ビニル共重合体1
5μの構成からなる通気性包装材を作製した。得られた
通気性包装材は外観及び強度に優れており、透湿度を測
定した結果は150g/m2 /24時間であった。
Example 1 A picture layer was formed on one surface of a biaxially stretched polyethylene terephthalate film having a thickness of 12 μm by gravure printing using a urethane-based green ink, and the picture layer surface and a lattice mesh material (Hagiwara Industry Co., Ltd.) Meltac cloth) and 10
Laminated by extrusion lamination of an ethylene-vinyl acetate copolymer resin having a vinyl acetate content of 19% by weight and an MI of 15 and then piercing from the surface of the biaxially stretched polyethylene terephthalate film with a needle having a diameter of 0.5 mm to obtain 10c.
Extrusion lamination of an ethylene-vinyl acetate copolymer resin having a vinyl acetate content of 19% by weight and an MI of 15 to a thickness of 15 μm was formed on the surface of the lattice network material by forming 30 pores per m 2. Biaxially stretched polyethylene terephthalate film 12μ / pattern layer / ethylene-vinyl acetate copolymer 10μ / lattice network material / ethylene-vinyl acetate copolymer 1
A breathable packaging material having a structure of 5 μ was prepared. The resulting breathable packaging material is excellent in appearance and strength, a result of measuring the moisture permeability was 150g / m 2/24 hours.

【0020】実施例2 厚さ12μの2軸延伸ポリエチレンテレフタレートフィ
ルムの一方の面に、ウレタン系の緑色インキを使用して
グラビア印刷により絵柄層を形成し、その絵柄層面と格
子網状材(ハギワラ工業製メルタッククロス)とを10
μの酢酸ビニル含有率が19重量%でMIが15のエチ
レン−酢酸ビニル共重合体樹脂の押出ラミネーシヨンに
より積層した後、格子網状材面に酢酸ビニル含有率が1
9重量%でMIが15のエチレン−酢酸ビニル共重合体
樹脂を15μの厚さに押出ラミネーシヨンして、2軸延
伸ポリエチレンテレフタレートフィルム12μ/絵柄層
/エチレン−酢酸ビニル共重合体10μ/格子網状材/
エチレン−酢酸ビニル共重合体15μの構成からなる積
層体を作製し、積層体の2軸延伸ポリエチレンテレフタ
レートフィルム面から直径0.5mmの針で突き刺して
10cm2 あたり30個の格子網状材に達する細孔を形
成して通気性包装材を作製した。得られた通気性包装材
は外観及び強度に優れており、透湿度を測定した結果は
150g/m2 /24時間であった。
Example 2 A pattern layer was formed on one surface of a biaxially stretched polyethylene terephthalate film having a thickness of 12 μm by gravure printing using a urethane-based green ink, and the surface of the pattern layer and a lattice mesh material (Hagiwara Kogyo Co., Ltd.) Meltac cloth) and 10
After laminating by extrusion lamination of an ethylene-vinyl acetate copolymer resin having a vinyl acetate content of 19% by weight and an MI of 15, the vinyl acetate content of 1 on the surface of the lattice mesh material.
Extrusion lamination of an ethylene-vinyl acetate copolymer resin having a MI of 15 at 9% by weight and a thickness of 15 μ was carried out, and a biaxially stretched polyethylene terephthalate film 12 μ / pattern layer / ethylene-vinyl acetate copolymer 10 μ / lattice network. Material /
A laminate having a structure of 15 μm of ethylene-vinyl acetate copolymer was prepared, and pierced from the biaxially stretched polyethylene terephthalate film surface of the laminate with a needle having a diameter of 0.5 mm to reach 30 grid nets per 10 cm 2. Holes were formed to produce a breathable packaging material. The resulting breathable packaging material is excellent in appearance and strength, a result of measuring the moisture permeability was 150g / m 2/24 hours.

【0021】[0021]

【発明の効果】外面から順にプラスチックフィルム層と
絵柄層と接着層と強化材層と酢酸ビニル含有率が6〜3
0重量%のエチレン−酢酸ビニル共重合体層からなり、
プラスチックフィルム層と接着層に細孔が形成された構
成とすることにより、酢酸ビニル含有率が6〜30重量
%のエチレン−酢酸ビニル共重合体層は通気性が大きく
細孔を形成しなくても通気性包装材として必要な通気性
が得られるので、強化材層の内面側の層に細孔を形成す
る工程が省略でき、通気性包装材の製造工程を簡略化す
ることができる。また、絵柄層が外面に露出しないので
衛生面で優れた通気性包装材とすることができる。
The plastic film layer, the picture layer, the adhesive layer, the reinforcing material layer, and the vinyl acetate content in the order of 6 to 3 from the outer surface.
A 0% by weight ethylene-vinyl acetate copolymer layer,
By having a configuration in which pores are formed in the plastic film layer and the adhesive layer, the ethylene-vinyl acetate copolymer layer having a vinyl acetate content of 6 to 30% by weight has large air permeability and does not form pores. Also, since the air permeability required for the air permeable packaging material can be obtained, the step of forming pores in the inner layer of the reinforcing material layer can be omitted, and the manufacturing process of the air permeable packaging material can be simplified. Further, since the picture layer is not exposed to the outside, a breathable packaging material excellent in hygiene can be obtained.

【0022】上記の通気性包装材において、接着層が酢
酸ビニル含有率が6〜30重量%のエチレン−酢酸ビニ
ル共重合体の熱溶融押出層からなる構成とすることによ
り、接着層の通気性を大きくできるとともに、プラスチ
ックフィルム層と強化材層との積層工程の作業性を良く
することができる。
In the above breathable packaging material, the adhesive layer is constituted by a hot-melt extruded layer of an ethylene-vinyl acetate copolymer having a vinyl acetate content of 6 to 30% by weight. And the workability of the laminating step of the plastic film layer and the reinforcing material layer can be improved.

【0023】上記の通気性包装材において、強化材層を
合成繊維混抄紙、不織布、格子網状材とすることによ
り、引き裂きおよび突き破りに対する強度が大きくな
り、内部に収納される乾燥剤等の塊により突き破られて
内容物が漏れ出すのを確実に防止することができる。
In the above-described breathable packaging material, by forming the reinforcing material layer from a synthetic fiber mixed paper, a nonwoven fabric, and a lattice mesh material, the strength against tearing and breaking through is increased, and the reinforcing agent layer is formed by a lump of a desiccant or the like stored inside. It is possible to reliably prevent the contents from leaking out.

【0024】上記の通気性包装材において、プラスチッ
クフィルム層を2軸延伸プラスチックフィルムとするこ
とによた、水分、油分等が内部に浸透することのない外
観の優れた包装材とすることができる。
In the above-mentioned breathable packaging material, by forming the plastic film layer as a biaxially stretched plastic film, it is possible to obtain a packaging material having an excellent appearance in which moisture, oil and the like do not penetrate inside. .

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の実施形態の積層構成を示す断面図。FIG. 1 is a cross-sectional view illustrating a laminated configuration according to an embodiment of the present invention.

【符号の説明】[Explanation of symbols]

1 プラスチックフィルム層 2 接着層 3 強化材層 4 エチレン−酢酸ビニル共重合体層 5 細孔 6 絵柄層 REFERENCE SIGNS LIST 1 plastic film layer 2 adhesive layer 3 reinforcing material layer 4 ethylene-vinyl acetate copolymer layer 5 pore 6 picture layer

───────────────────────────────────────────────────── フロントページの続き Fターム(参考) 3E068 AA35 CD01 CE02 CE03 DD08 DE01 EE21 3E086 AA01 AB01 AC07 BA04 BA15 BA19 BA33 BA43 BB47 CA29 4F100 AK01A AK42 AK68C AK68G AR00B AT00A BA03 BA07 BA10A DC11A DC11G DC15B DC16B DG10B DG15B DG18B EH17G EJ33 EJ38A GB15 HB31 JD02  ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3E068 AA35 CD01 CE02 CE03 DD08 DE01 EE21 3E086 AA01 AB01 AC07 BA04 BA15 BA19 BA33 BA43 BB47 CA29 4F100 AK01A AK42 AK68C AK68G AR00B AT00A BA03 BA07 BA10A DC11A DC11BDCB DG13 DCB DCB EJ38A GB15 HB31 JD02

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】 プラスチックフィルム層と接着層と強化
材層と酢酸ビニル含有率が6〜30重量%のエチレン−
酢酸ビニル共重合体層からなり、前記プラスチックフィ
ルム層と前記接着層に細孔が形成された構成からなるこ
とを特徴とする通気性包装材。
1. A plastic film layer, an adhesive layer, a reinforcing material layer, and ethylene-ethylene having a vinyl acetate content of 6 to 30% by weight.
A breathable packaging material comprising a vinyl acetate copolymer layer, wherein pores are formed in the plastic film layer and the adhesive layer.
【請求項2】 前記接着層が酢酸ビニル含有率が6〜3
0重量%のエチレン−酢酸ビニル共重合体の熱溶融押出
層からなることを特徴とする請求項1記載の通気性包装
材。
2. The adhesive layer according to claim 1, wherein the content of vinyl acetate is 6 to 3.
The breathable packaging material according to claim 1, comprising a hot-melt extruded layer of 0% by weight of an ethylene-vinyl acetate copolymer.
【請求項3】 前記強化材層が合成繊維混抄紙、不織
布、格子網状材であることを特徴とする請求項1または
2に記載の通気性包装材。
3. The breathable packaging material according to claim 1, wherein the reinforcing material layer is a synthetic fiber mixed paper, a nonwoven fabric, or a lattice mesh material.
【請求項4】 前記プラスチックフィルム層が2軸延伸
プラスチックフィルムであることを特徴とする請求項1
〜3のいずれかに記載の通気性包装材。
4. The plastic film layer according to claim 1, wherein said plastic film layer is a biaxially stretched plastic film.
4. The breathable packaging material according to any one of items 1 to 3.
JP2001121083A 2001-04-19 2001-04-19 Air-permeable packaging material Withdrawn JP2002308320A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001121083A JP2002308320A (en) 2001-04-19 2001-04-19 Air-permeable packaging material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001121083A JP2002308320A (en) 2001-04-19 2001-04-19 Air-permeable packaging material

Publications (1)

Publication Number Publication Date
JP2002308320A true JP2002308320A (en) 2002-10-23

Family

ID=18971019

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001121083A Withdrawn JP2002308320A (en) 2001-04-19 2001-04-19 Air-permeable packaging material

Country Status (1)

Country Link
JP (1) JP2002308320A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006231723A (en) * 2005-02-25 2006-09-07 Toppan Printing Co Ltd Moisture-permeable/gas-permeable packaging material and packaging bag
WO2017084762A1 (en) * 2015-11-17 2017-05-26 Amcor Flexibles France Sas Method for ripening or heat treating packaged food

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006231723A (en) * 2005-02-25 2006-09-07 Toppan Printing Co Ltd Moisture-permeable/gas-permeable packaging material and packaging bag
WO2017084762A1 (en) * 2015-11-17 2017-05-26 Amcor Flexibles France Sas Method for ripening or heat treating packaged food

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