JPH0450113Y2 - - Google Patents
Info
- Publication number
- JPH0450113Y2 JPH0450113Y2 JP3233188U JP3233188U JPH0450113Y2 JP H0450113 Y2 JPH0450113 Y2 JP H0450113Y2 JP 3233188 U JP3233188 U JP 3233188U JP 3233188 U JP3233188 U JP 3233188U JP H0450113 Y2 JPH0450113 Y2 JP H0450113Y2
- Authority
- JP
- Japan
- Prior art keywords
- film
- packaging bag
- stretched nylon
- laminated
- retort food
- 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.)
- Expired
Links
- 238000004806 packaging method and process Methods 0.000 claims description 16
- 235000013305 food Nutrition 0.000 claims description 12
- 229920006284 nylon film Polymers 0.000 claims description 12
- 239000004743 Polypropylene Substances 0.000 claims description 11
- -1 polypropylene Polymers 0.000 claims description 11
- 229920001155 polypropylene Polymers 0.000 claims description 11
- 229920001328 Polyvinylidene chloride Polymers 0.000 claims description 8
- 239000002131 composite material Substances 0.000 claims description 8
- 239000005033 polyvinylidene chloride Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 239000011888 foil Substances 0.000 description 4
- 239000004677 Nylon Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229920006267 polyester film Polymers 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
Landscapes
- Bag Frames (AREA)
- Laminated Bodies (AREA)
Description
〔産業上の利用分野」
本考案は耐衝撃性にすぐれたレトルト食品用包
装袋に関する。
〔従来の技術〕
一般に用いられているレトルト食品用包装袋に
おいては、素材に酸素遮断性および耐加熱性を要
求されており、素材としてポリエステルフイル
ム、アルミニウム箔および延伸ポリプロピレンフ
イルムの積層フイルムや、延伸ナイロンと延伸ポ
リプロピレンフイルムの積層フイルムが用いられ
ている。
また封入食品が液体や粘性体の場合には、落と
した時に破れないような耐衝撃性が要求される。
〔考案が解決しようとする課題〕
レトルト食品用包装袋の素材としてポリエステ
ルフイルム、アルミニウム箔および延伸ポリプロ
ピレンフイルムの積層フイルムを用いた場合に
は、不透明であるため、内容物を目視できず、か
つ電子レンジにより加熱することができず、また
素材として延伸ナイロンと延伸ポリプロピレンフ
イルムの積層フイルムを用いた場合には、酸素遮
断性に欠け、酸化し易い食品には適用できない。
本考案は上記した点に鑑みてなされたもので、
酸素遮断性および耐衝撃性に優れかつ内容物を目
視できるようにしたレトルト食品用包装袋を提供
することを目的とする。
〔課題を解決するための手段〕
本考案のレトルト食品用包装袋は、ポリ塩化ビ
ニリデンフイルムの間に延伸ナイロンフイルムを
介在させた複合フイルムを延伸ナイロンフイルム
と未延伸ポリプロピレンフイルムとの間に配置し
た積層フイルムを、未延伸ポリプロピレンフイル
ムが内側に位置するように重ね合せ周辺部分をヒ
ートシールして構成される。
〔作用〕
本考案のレトルト食品用包装袋においては、素
材としての積層フイルムに酸素遮断性に富むが耐
衝撃性に弱いポリ塩化ビニリデンフイルムの間に
延伸ナイロンフイルムを挟んで形成した複合フイ
ルムを有するので、耐衝撃性は強くなりまた金属
箔を使用しないで電子レンジの加熱が可能にな
り、しかも素材としての積層フイルムが透明とす
ることができるので、開封することなく内容物の
目視ができる。
〔実施例〕
以下本考案の一実施例を図面につき説明する。
第１図は本考案によるレトルト食品用包装袋を
四方シール形包装袋に適用した例を示すものであ
り、この四方シール形包装袋は１，２枚の矩形状
をなす積層フイルム２，２を、重ね合せ、周辺部
分を通常のヒートシール機を用いてヒートシール
３することで構成されている。
上記積層フイルム２は、第２図に示すように厚
さ15ミクロンの延伸ナイロンフイルム４と厚さ40
ないし150ミクロンの未延伸ポリプロピレンフイ
ルム５との間に複合フイルム６を配置して形成さ
れている。この複合フイルム６は２枚の厚さ15ミ
クロンのポリ塩化ビニリデンフイルム７，７の間
に厚さ15ミクロンの延伸ナイロンフイルム８を介
在させて構成されている。すなわち複合フイルム
６は２枚のポリ塩化ビニリデンフイルム７，７の
間に延伸ナイロンフイルム８を挟んだ３層構造を
なしている。そして２枚の矩形状をなす積層フイ
ルム２，２は、未延伸ポリプロピレンフイルム５
が内側に位置するように重ね合わされてその周辺
部分をヒートシールすることで包装袋となる。
このようにして作られた包装袋は透明を呈し内
容物の確認を開封することなくでき、また延伸ナ
イロンフイルムを挟んで２枚のポリ塩化ビニリデ
ンフイルムがあるので、耐衝撃性に優れている。
上記包装袋の試験結果を下表１に示す。
[Industrial Application Field] The present invention relates to a retort food packaging bag with excellent impact resistance. [Prior Art] Generally used packaging bags for retort food require materials with oxygen barrier properties and heat resistance, and materials include laminated films of polyester film, aluminum foil, and stretched polypropylene film, A laminated film of nylon and stretched polypropylene film is used. Furthermore, if the enclosed food is liquid or viscous, it is required to have impact resistance so that it will not break when dropped. [Problem to be solved by the invention] When a laminated film of polyester film, aluminum foil, and stretched polypropylene film is used as the material for retort food packaging bags, it is opaque, so the contents cannot be seen visually, and electronic It cannot be heated in a microwave, and when a laminated film of stretched nylon and stretched polypropylene film is used as the material, it lacks oxygen barrier properties and cannot be applied to foods that are easily oxidized. This idea was made in view of the above points,
An object of the present invention is to provide a packaging bag for retort food that has excellent oxygen barrier properties and impact resistance, and allows the contents to be visually checked. [Means for solving the problem] The retort food packaging bag of the present invention has a composite film in which a stretched nylon film is interposed between polyvinylidene chloride films, and is arranged between the stretched nylon film and the unstretched polypropylene film. The laminated films are stacked so that the unstretched polypropylene film is located on the inside, and the peripheral portions are heat-sealed. [Function] The retort food packaging bag of the present invention has a composite film formed by sandwiching a stretched nylon film between polyvinylidene chloride films that have high oxygen barrier properties but weak impact resistance as a laminated film material. Therefore, the impact resistance is strong, and heating in a microwave oven is possible without using metal foil.Moreover, since the laminated film used as the material can be made transparent, the contents can be visually inspected without opening the package. [Embodiment] An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an example in which the packaging bag for retort food according to the present invention is applied to a four-sided sealed packaging bag, and this four-sided sealed packaging bag has one or two rectangular laminated films 2, 2. , overlapped, and heat-sealed the peripheral portion using a normal heat-sealing machine. As shown in FIG. 2, the laminated film 2 consists of a stretched nylon film 4 of 15 microns thick and
A composite film 6 is disposed between an unstretched polypropylene film 5 having a thickness of 150 to 150 microns. This composite film 6 is constructed by interposing a stretched nylon film 8 with a thickness of 15 microns between two polyvinylidene chloride films 7, 7 with a thickness of 15 microns. That is, the composite film 6 has a three-layer structure in which a stretched nylon film 8 is sandwiched between two polyvinylidene chloride films 7, 7. The two rectangular laminated films 2, 2 are made of an unstretched polypropylene film 5.
A packaging bag is created by stacking the bags on top of each other so that they are located on the inside and heat-sealing the surrounding areas. The packaging bag made in this manner is transparent, allowing the contents to be checked without opening the bag, and has excellent impact resistance because it has two polyvinylidene chloride films sandwiching a stretched nylon film. The test results of the above packaging bag are shown in Table 1 below.
以上述べたように本考案によれば、ポリ塩化ビ
ニリデンフイルムの間に延伸ナイロンフイルムを
介在させた複合フイルムを有する積層フイルムを
素材としたので、酸素遮断性および耐衝撃性に優
れかつ積層フイルム全体が透明となるので、内容
物を開封することなく目視でき、しかも金属箔を
用いないので、電子レンジによる加熱が可能にな
る。
As described above, according to the present invention, since the material is a laminated film having a composite film in which a stretched nylon film is interposed between polyvinylidene chloride films, the laminated film has excellent oxygen barrier properties and impact resistance, and the entire laminated film Since it is transparent, the contents can be viewed visually without opening the package, and since no metal foil is used, it can be heated in a microwave oven.
第１図は本考案によるレトルト食品用包装袋の
内容物を入れる前の状態を示す図、第２図はレト
ルト食品用包装袋の素材である積層フイルムの断
面図である。
１……包装袋、２……積層フイルム、４……延
伸ナイロンフイルム、５……未延伸ポリプロピレ
ンフイルム、６……複合フイルム、７……ポリ塩
化ビニリデンフイルム、８……延伸ナイロンフイ
ルム。
FIG. 1 is a diagram showing the state of the packaging bag for retort food according to the present invention before the contents are placed therein, and FIG. 2 is a sectional view of a laminated film that is the material of the packaging bag for retort food. 1...Packaging bag, 2...Laminated film, 4...Stretched nylon film, 5...Unstretched polypropylene film, 6...Composite film, 7...Polyvinylidene chloride film, 8...Stretched nylon film.
Claims (1)
ンフイルムを介在させた複合フイルムを延伸ナイ
ロンフイルムと未延伸ポリプロピレンフイルムと
の間に配置した積層フイルムを、未延伸ポリプロ
ピレンフイルムが内側に位置するように重ね合せ
周辺部分をヒートシールしてなるレトルト食品用
包装袋。 A laminated film in which a composite film in which a stretched nylon film is interposed between polyvinylidene chloride films is placed between the stretched nylon film and an unstretched polypropylene film is superimposed so that the unstretched polypropylene film is located on the inside. A packaging bag for retort food made by heat sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3233188U JPH0450113Y2 (en) | 1988-03-11 | 1988-03-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3233188U JPH0450113Y2 (en) | 1988-03-11 | 1988-03-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01139533U JPH01139533U (en) | 1989-09-25 |
| JPH0450113Y2 true JPH0450113Y2 (en) | 1992-11-26 |
Family
ID=31258759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3233188U Expired JPH0450113Y2 (en) | 1988-03-11 | 1988-03-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0450113Y2 (en) |
-
1988
- 1988-03-11 JP JP3233188U patent/JPH0450113Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01139533U (en) | 1989-09-25 |
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