JPH0880977A - Easily openable retort pouch - Google Patents

Easily openable retort pouch

Info

Publication number
JPH0880977A
JPH0880977A JP6243459A JP24345994A JPH0880977A JP H0880977 A JPH0880977 A JP H0880977A JP 6243459 A JP6243459 A JP 6243459A JP 24345994 A JP24345994 A JP 24345994A JP H0880977 A JPH0880977 A JP H0880977A
Authority
JP
Japan
Prior art keywords
retort
film
pouch
laminated
biaxially stretched
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.)
Pending
Application number
JP6243459A
Other languages
Japanese (ja)
Inventor
Hiroaki Kachi
浩章 加地
Masanori Takahashi
正憲 高橋
Takashi Nakagome
隆 中込
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 JP6243459A priority Critical patent/JPH0880977A/en
Publication of JPH0880977A publication Critical patent/JPH0880977A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00General aspects of processes or apparatus for joining preformed parts
    • B29C66/70General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined

Abstract

PURPOSE: To produce a packaging material for the use in a retort and a retort pouch using it which make it possible to unseal a pouch easily by hand without spilling the contents. CONSTITUTION: A laminate for a retort, having a good tearing property, can be produced by laminating in sequence by a dry lamination process, etc., a heat-resistant film of biaxially oriented polyethylene terephthalate 11 as a surface layer, aluminum foil 12 as a barrier layer, a film of a biaxially oriented special nylon 13 having a good straight tearing property to make the product easy to tear, and a film of polypropylene 14 which has not yet been oriented as a sealing layer. By using this laminate for a pouch for a retort or a standing pouch the product can be unsealed easily by hand without spilling the contents.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、直線的引き裂き性のよ
いレトルト適性のある積層包材に関するもので、その積
層包材の使用により、手で容易に開封できるレトルト用
パウチ又はスタンディングパウチを提供しようとするも
のである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a retort-appropriate laminated packaging material having good linear tearability, and provides a retort pouch or a standing pouch that can be easily opened by hand by using the laminated packaging material. Is what you are trying to do.

【0002】[0002]

【従来の技術】従来より、レトルト用包装体として、主
に下記の構成の積層包材が使用されている。即ち、表面
層には、二軸延伸ポリエチレンテレフタレート(以下P
ETとする)や二軸延伸ポリプロピレン(以下OPPと
する)、ガスバリヤー層には、アルミニウム箔(以下A
l箔とする)、内面のヒートシール層には、未延伸ポリ
プロピレン(以下CPPとする)や直鎖状低密度ポリエ
チレン(以下LLDPEとする)、そして中間層に耐衝
撃性や自立性(起立性)を良くするために、二軸延伸ナ
イロン(以下ONとする)が使用されている。従って、
積層材の層構成としては以下のものが知られている。 ・PET(又はOPP)/ON/CPP(又はLLDP
E) ・PET(又はOPP)/ON/Al箔/CPP(又は
LLDPE)
2. Description of the Related Art Conventionally, a laminated packaging material having the following structure has been mainly used as a retort packaging body. That is, a biaxially stretched polyethylene terephthalate (hereinafter referred to as P
ET), biaxially oriented polypropylene (hereinafter referred to as OPP), the gas barrier layer, aluminum foil (hereinafter referred to as A
l foil), the heat seal layer on the inner surface is unstretched polypropylene (hereinafter referred to as CPP) or linear low-density polyethylene (hereinafter referred to as LLDPE), and the intermediate layer is impact resistant and self-supporting (standing property). ), Biaxially stretched nylon (hereinafter referred to as ON) is used. Therefore,
The following are known as the layer structure of the laminated material.・ PET (or OPP) / ON / CPP (or LLDP)
E) ・ PET (or OPP) / ON / Al foil / CPP (or LLDPE)

【0003】しかし、上記積層材を使用してレトルト用
包装体を作製した場合、内容物を取り出す際に、手で直
線的に引き裂き、内容物をこぼさずに開封することは非
常に困難であった。即ち、従来のONで作製したレトル
トパウチは、開封の際に、直線的に引き裂かれず、表側
と裏側の積層材が所定の位置よりずれて、股裂き状態で
引き裂かれるので、内容物がこぼれ易いという問題があ
った。また、レトルトパウチの場合、レトルト時の破袋
防止や流通時の破袋防止のため、CPPの厚さを50μ
m以上とし、包装材全体の厚さを80μm以上とするの
で、手での開封は困難であった。
However, in the case where a retort package is manufactured using the above-mentioned laminated material, it is very difficult to tear the contents linearly by hand to take out the contents without spilling. It was That is, the conventional retort pouch made by ON is not linearly torn at the time of opening, and the laminated materials on the front side and the back side are displaced from a predetermined position and are torn in a crotch tear state, so that the contents are easily spilled. There was a problem. In the case of a retort pouch, the thickness of CPP should be 50μ in order to prevent bag breakage during retort and during distribution.
Since the total thickness of the packaging material is 80 μm or more, it is difficult to open the packaging material by hand.

【0004】[0004]

【発明が解決しようとする課題】従来のレトルトパウチ
は手での開封が困難なため、開封時には鋏やナイフを使
用するか、又は、手で直線的に引き裂きができるように
するため、直線的引き裂き性に優れた延伸高密度ポリエ
チレン層を更に積層することが行われている。この場合
はコスト高になるという問題があった。また、PETと
ON層に傷を付けることにより、直線的引き裂き性を良
くする手段を講じている場合もあるが、強度が低下し
て、レトルトパウチとしては十分な強度が得られないと
いう問題があった。
Since the conventional retort pouch is difficult to open by hand, it is necessary to use scissors or a knife at the time of opening, or to make it possible to tear it linearly by hand. It has been practiced to further laminate a stretched high-density polyethylene layer having excellent tearability. In this case, there is a problem that the cost becomes high. In some cases, the PET and the ON layer are scratched to improve the linear tearability, but the strength is lowered, and there is a problem that sufficient strength cannot be obtained as a retort pouch. there were.

【0005】本発明は、上記問題点を解決するために、
直線的引き裂き性に優れた二軸延伸特殊ナイロンフィル
ムを使用して、レトルト用積層材を作製し、この積層材
を用いてレトルト用パウチやスタンディングパウチを製
袋することにより、コスト面及び強度面を変えずに内容
物をこぼすことなく、手で容易に開封できるようにする
ことを目的とする。
In order to solve the above problems, the present invention provides
A biaxially stretched special nylon film with excellent linear tearability is used to make a retort laminate, and a bag for retort pouches and standing pouches is made using this laminate to reduce costs and strength. The purpose is to make it easy to open by hand without changing the contents and without spilling the contents.

【0006】[0006]

【課題を解決するための手段】二軸延伸ポリエチレンテ
レフタレートフィルム、金属箔、二軸延伸ナイロンフィ
ルム、未延伸ポリプロピレンフィルムの順に積層される
レトルト用積層包材であって、該二軸延伸ナイロンフィ
ルムが直線的引き裂き性に優れた二軸延伸ナイロンフィ
ルムである易開封性レトルト用積層包材とした。また、
直線的引き裂き性に優れた二軸延伸ナイロンフィルムと
最内層の未延伸ポリプロピレンフィルムをポリエステル
ポリウレタ系接着剤1乃至5g/m2 (乾燥状態)を用
いてラミネートし、該二軸延伸ナイロンフィルムと未延
伸ポリプロピレンフィルムのラミネート強度を800g
/15mm幅以上として、積層包材が手で直線的に引き
裂くことができるようなレトルト用積層包材とした。更
に、前記引き裂き性に優れた積層材を使用してレトルト
用の平パウチやスタンディングパウチを作製することに
より、該パウチが手で容易に開封できるような易開封性
レトルトパウチとした。
[Means for Solving the Problems] A laminated packaging material for a retort in which a biaxially stretched polyethylene terephthalate film, a metal foil, a biaxially stretched nylon film and an unstretched polypropylene film are laminated in this order, wherein the biaxially stretched nylon film is A biaxially stretched nylon film having excellent linear tearability was provided as a layered packaging material for an easy-open retort. Also,
A biaxially stretched nylon film having excellent linear tearability and an unstretched polypropylene film as the innermost layer were laminated with a polyester polyureta adhesive 1 to 5 g / m 2 (dry state), Laminate strength of stretched polypropylene film is 800g
/ 15 mm width or more, so that the laminated packaging material for a retort can be torn linearly by hand. Furthermore, a flat pouch or a standing pouch for a retort was produced using the above-mentioned laminated material having excellent tearability, thereby making the pouch easily openable by hand.

【0007】[0007]

【作用】本発明によれば、二軸延伸ポリエチレンテレフ
タレートフィルム、アルミニウム箔、二軸延伸ナイロン
フィルム、未延伸ポリプロピレンフィルムからなるレト
ルト用積層材において、該二軸延伸ナイロンフィルムを
直線的引き裂き性に優れた二軸延伸特殊ナイロンフィル
ムにすることにより、該積層包材が手で直線的に引き裂
くことができるようなレトルト用積層材を作製すること
ができる。また、前記引き裂き性に優れた積層材を使用
して、レトルト用平パウチやスタンディングパウチを作
製することにより、内容物をこぼすことなく、手で容易
に開封できるレトルト用平パウチやスタンディングパウ
チを得ることができる。
According to the present invention, in a retort laminate comprising a biaxially stretched polyethylene terephthalate film, an aluminum foil, a biaxially stretched nylon film and an unstretched polypropylene film, the biaxially stretched nylon film is excellent in linear tearability. By using the biaxially stretched special nylon film, it is possible to prepare a laminated material for retort in which the laminated packaging material can be torn linearly by hand. Further, by using the above-mentioned laminated material having excellent tearability, a flat pouch for standing or a standing pouch for retort can be prepared to obtain a flat pouch for standing or a standing pouch that can be easily opened by hand without spilling the contents. be able to.

【0008】[0008]

【実施例】以下、実施例に基づいて、図面を参照にしな
がら本発明を詳細に説明する。図1は本発明の引き裂き
性に優れた積層材の層構成を示す断面図である。図2は
本発明のレトルト用平パウチの斜視図であり、図3はそ
のパウチの層構成を示す断面図である。
The present invention will be described in detail below with reference to the drawings based on the embodiments. FIG. 1 is a cross-sectional view showing a layer structure of a laminated material having excellent tearability according to the present invention. FIG. 2 is a perspective view of a flat pouch for a retort according to the present invention, and FIG. 3 is a cross-sectional view showing a layer structure of the pouch.

【0009】本発明は、レトルト用平パウチやスタンデ
ィングパウチ包材に、直線的引き裂き性に優れた二軸延
伸特殊ナイロン(以下易引裂き性ONとする)フィルム
を使用することにより、該積層包材に手で直線的に引き
裂くことができる機能を付与し、内容物をこぼさずに手
で開封できるようにしたことを特徴とする。
The present invention uses a biaxially stretched special nylon (hereinafter referred to as easy tear ON) film having excellent linear tearability as a flat pouch for retort or a standing pouch packaging material. The feature is that it can be torn linearly by hand so that the contents can be opened by hand without spilling.

【0010】本発明の易開封性レトルト包材は、図1に
示すように、外側よりPETフィルム11、アルミニウ
ム箔12、易引裂き性ONフィルム13、CPPフィル
ム14より構成される。そして、表面層は耐熱性のある
PETフィルムを使用し、バリヤー層としてアルミニウ
ム箔等の金属箔を用い、中間層には直線的引き裂き性を
付与するために、直線的引き裂き性に優れた二軸延伸特
殊ナイロンフィルムを使用し、更に、ヒートシール層と
して耐熱性のあるCPPを使用した。
As shown in FIG. 1, the easily openable retort packaging material of the present invention comprises a PET film 11, an aluminum foil 12, an easily tearable ON film 13, and a CPP film 14 from the outside. A heat-resistant PET film is used for the surface layer, a metal foil such as aluminum foil is used for the barrier layer, and a linear tearability is imparted to the intermediate layer. A stretched special nylon film was used, and further heat resistant CPP was used as a heat seal layer.

【0011】以下に、表面層、中間層、シール層を構成
する樹脂について更に詳細に説明する。表面層には、従
来から耐熱性の点でレトルト用に多く使用されているP
ETフィルムを使用した。表面層には、PETフィルム
の他に、従来レトルト包材に使用されているOPPフィ
ルムやONフィルムも使用できる。積層材に直線的引き
裂き性を付与するために、中間層に直線的引き裂き性に
優れた二軸延伸特殊ナイロンフィルムを使用した。この
引き裂き性に優れた二軸延伸ナイロンフィルムとして
は、出光石油化学(株)製の「ユニアスロン」が好適で
ある。
The resins constituting the surface layer, the intermediate layer and the seal layer will be described in more detail below. The surface layer is made of P, which has been widely used for retort due to its heat resistance.
ET film was used. For the surface layer, in addition to the PET film, an OPP film or an ON film which is conventionally used for a retort packaging material can be used. In order to impart linear tearability to the laminated material, a biaxially stretched special nylon film having excellent linear tearability was used for the intermediate layer. "Uniathlon" manufactured by Idemitsu Petrochemical Co., Ltd. is suitable as the biaxially stretched nylon film having excellent tearability.

【0012】前記ユニアスロンは出光石油化学(株)製
の二軸延伸特殊ナイロンフィルムであり、ナイロン樹脂
の持つ特性である優れた強度を保持し、更に、フィルム
の流れ方向(machine direction:MD)に優れた直線
カット性を有するフィルムである。このユニアスロンを
使用することにより、積層材の直線的引き裂き性がよく
なるため、従来のON仕様のレトルトパウチのような股
裂き現象は生じず、従来のレトルト包材の欠点が解消さ
れ、開封時に内容物をこぼすことなく、手で容易に開封
できるレトルト包材を得ることができる。
The Uniathlon is a biaxially stretched special nylon film manufactured by Idemitsu Petrochemical Co., Ltd., which retains the excellent strength characteristic of the nylon resin, and further, in the machine direction (MD) of the film. It is a film having excellent linear cutting properties. By using this Uniathlon, the linear tearability of the laminated material is improved, so the cleaving phenomenon unlike the conventional ON specification retort pouch does not occur, the drawbacks of the conventional retort packaging material are eliminated, and the contents when opened It is possible to obtain a retort packaging material that can be easily opened by hand without spilling an item.

【0013】また、ユニアスロンは従来の二軸延伸ナイ
ロン(ON)に比べて剛性が約30%も高いので、スタ
ンディングパウチ等の自立袋用には好適であり、レトル
ト用スタンディングパウチの易開封包材としても使用で
きる。フィルムの厚さは10〜30μmのものが使用で
きるが、15〜25μmのものが好適である。
Further, since uniathlon has a rigidity that is about 30% higher than that of conventional biaxially stretched nylon (ON), it is suitable for a self-standing bag such as a standing pouch, and an easy-open packaging material for a standing pouch for a retort. Can also be used as A film having a thickness of 10 to 30 μm can be used, but a film having a thickness of 15 to 25 μm is preferable.

【0014】中間層のガスバリヤー層としては、アルミ
ニウム箔が通常使用されるが、アルミニウムと亜鉛の合
金箔等その他の金属箔も使用できる。
Aluminum foil is usually used as the gas barrier layer of the intermediate layer, but other metal foils such as aluminum-zinc alloy foil can also be used.

【0015】最内面のシール層には、未延伸ポリプロピ
レン(CPP)を使用し、レトルト耐性のあるものにし
た。また、ハイレトルト用には融点が145〜165℃
のものを選定し、ハイレトルトにも耐性のある積層材と
した。
For the innermost seal layer, unstretched polypropylene (CPP) was used to make it resistant to retort. Also, the melting point is 145 to 165 ° C for high retort.
Was selected as the laminated material that is resistant to high retorts.

【0016】本発明のレトルト用積層包材は、上記フィ
ルム及び金属箔を使用して常法に従って製造することが
できる。例えば、ドライラミネーション法、ウェットラ
ミネーション法、押し出しラミネーション法等により、
或いはこれらの方法を組み合わせることにより製造する
こができる。
The laminated packaging material for a retort according to the present invention can be manufactured by a conventional method using the above film and metal foil. For example, by dry lamination method, wet lamination method, extrusion lamination method,
Alternatively, it can be produced by combining these methods.

【0017】中でもドライラミネーション法が好まし
く、この場合の接着剤としてポリエステルポリウレタン
系の接着剤が用いられる。コート量は乾燥状態で0.5
〜10g/m2 の範囲で使用されるが、引き裂き性を重
視した場合、1〜5g/m2 が好ましい。ポリエステル
ポリウレタン系接着剤からなる接着剤層は伸びが少な
く、引き裂き性に優れた二軸延伸ナイロンと未延伸ポリ
プロピレンの接着強度が800g/15mm幅以上と強
いため、積層材を構成する各フィルムの引き裂きに追随
して引き裂かれるので、引き裂き性を重視した積層材の
接着剤としては優れたものである。又、耐熱性に優れる
ため、レトルト包材に適したものである。積層材の引き
裂き強度としては、JIS−P8116に準じて引き裂
き強度を測定した場合、100g以下が良好である。
Among them, the dry lamination method is preferable, and a polyester polyurethane adhesive is used as the adhesive in this case. Coat amount is 0.5 in dry state
It is used in the range of 10 to 10 g / m 2 , but 1 to 5 g / m 2 is preferable when tearability is important. The adhesive layer made of polyester polyurethane-based adhesive has low elongation and the tear strength of biaxially stretched nylon and unstretched polypropylene with excellent tearability is as strong as 800 g / 15 mm width or more. It is an excellent adhesive for a laminated material that emphasizes tearability, because it is torn following the above. Moreover, since it has excellent heat resistance, it is suitable as a retort packaging material. The tear strength of the laminated material is preferably 100 g or less when the tear strength is measured according to JIS-P8116.

【0018】次に、具体的な実施例に従って本発明を更
に詳しく説明する。 (実施例)厚さ12μmの二軸延伸ポリエチレンテレフ
タレート(以下PETとする)フィルム(東洋紡績
(株)製〔エスペットT4102〕)の片面に印刷加工
を行い、その印刷面にポリエステルポリウレタン系接着
剤(武田薬品工業(株)製〔タケラックA515/A−
50〕)を4g/m2 (乾燥状態)塗布し、厚さ9μm
のアルミニウム箔(以下Alとする)をドライラミネー
ション法によりラミネートして積層フィルムを作製し
た。
Next, the present invention will be described in more detail with reference to specific examples. (Example) A biaxially-stretched polyethylene terephthalate (hereinafter referred to as PET) film having a thickness of 12 μm ([Espet T4102] manufactured by Toyobo Co., Ltd.) was printed on one side, and a polyester polyurethane adhesive was applied to the printed side. (Takelac A515 / A- manufactured by Takeda Pharmaceutical Co., Ltd.
50]) is applied at 4 g / m 2 (dry state), and the thickness is 9 μm.
The aluminum foil (hereinafter referred to as Al) was laminated by a dry lamination method to prepare a laminated film.

【0019】次に、前記積層フィルムのAl面に、厚さ
15μmのユニアスロン(以下易引裂き性ONとする)
フィルム(出光石油化学(株)製)と厚さ60μmの未
延伸ポリプロピレン(以下CPPとする)フィルム(昭
和電工(株)製〔アロマーU〕)を順次ドライラミネー
ション法で積層して、下記仕様の積層材を作製した。・
PET12μm/Al 9μm/易引裂き性ON15μm/C
PP60μm(内面)
Next, on the Al surface of the laminated film, a uniathlon having a thickness of 15 μm (hereinafter referred to as easy tearing ON).
A film (manufactured by Idemitsu Petrochemical Co., Ltd.) and a 60 μm thick unstretched polypropylene (hereinafter referred to as CPP) film (manufactured by Showa Denko KK [Aromar U]) were sequentially laminated by a dry lamination method, and the following specifications were obtained. A laminated material was produced.・
PET 12μm / Al 9μm / Easy tearing ON 15μm / C
PP 60 μm (inner surface)

【0020】比較例として、易引裂き性ON及び従来の
二軸延伸ナイロン(以下ONとする)フィルム(興人
(株)製〔ボニールRX〕)を使用して、実施例と同様
の方法で下記仕様の積層材を作製した。いずれもCPP
が内面である。 (比較例1) ・PET12μm/易引裂き性ON15μm/Al 9μm/
CPP60μm (比較例2) ・易引裂き性ON15μm/Al 9μm/CPP60μm (比較例3) ・PET12μm/ON15μm/Al 9μm/CPP60μ
m (比較例4) ・PET12μm/Al 9μm/ON15μm/CPP60μ
As a comparative example, an easily tearable ON and a conventional biaxially stretched nylon (hereinafter referred to as ON) film ([Bonil RX] manufactured by Kojin Co., Ltd.) were used in the same manner as in the following examples. A laminated material having the specifications was produced. Both are CPP
Is the inside. (Comparative Example 1) PET 12 μm / easily tearing ON 15 μm / Al 9 μm /
CPP 60 μm (Comparative Example 2) -Easy tearability ON 15 μm / Al 9 μm / CPP 60 μm (Comparative Example 3) -PET 12 μm / ON 15 μm / Al 9 μm / CPP 60 μ
m (Comparative Example 4) ・ PET 12 μm / Al 9 μm / ON 15 μm / CPP 60 μ
m

【0021】実施例及び比較例1〜4で作製した積層材
について、積層材を流れ方向(MD)に引き裂き、引き
裂き量が100mmのとき、最初の位置からどれ位のズ
レが生じるかを測定し、以下のような試験結果が得られ
た。
With respect to the laminated materials produced in Examples and Comparative Examples 1 to 4, the laminated materials were torn in the machine direction (MD), and when the amount of tear was 100 mm, how much deviation from the initial position occurred was measured. The following test results were obtained.

【0022】また、実施例及び比較例1〜4で作製した
積層材を用いて、図2に示すように、易引裂きON及び
ONの流れ方向(MD)が袋の横方向になるように平パ
ウチ2を作製した。袋サイズは130×150mmと
し、シール部3の幅は10mmとした。図3は実施例の
積層材を用いて、図2のような平パウチ2を作製したと
きのX−Xにおける断面図である。
Further, using the laminated materials produced in Examples and Comparative Examples 1 to 4, as shown in FIG. 2, the easy-tearing ON and the flat flow direction (MD) of ON is in the lateral direction of the bag. Pouch 2 was prepared. The bag size was 130 × 150 mm, and the width of the seal portion 3 was 10 mm. FIG. 3 is a cross-sectional view taken along line XX when the flat pouch 2 as shown in FIG. 2 is manufactured using the laminated material of the example.

【0023】前記パウチ2に水120ccを充填し、上
部をヒートシールして密封し、これをレトルト釜にて、
120℃、30分間加熱殺菌を行って、冷却後各サンプ
ルについて、外観検査、落下試験、引裂き性試験、引裂
き強度、シール強度、ラミネート強度、突き刺し強度等
の測定を行った。
The pouch 2 is filled with 120 cc of water, and the upper portion is heat-sealed and hermetically sealed.
After heating and sterilizing at 120 ° C. for 30 minutes, the samples were cooled and then the appearance test, drop test, tearability test, tear strength, seal strength, laminate strength, puncture strength, etc. were measured.

【0024】試験結果は表1に示すとおりで、実施例で
作製した積層材は直線的引き裂き性が最も良好で、且つ
レトルト包材として必要なその他の物性は従来のONと
同等であり、易開封性レトルト包材として非常に優れて
いることが実証された。また、前記積層材を使用したレ
トルトパウチは、レトルト適性は従来のレトルト包材と
変わらず、開封性が非常に優れていることが判明した。
The test results are shown in Table 1. The laminated materials produced in the examples have the best linear tearability, and the other physical properties required for the retort packaging material are the same as those of the conventional ON, and the easy tearability is obtained. It has been proved to be very excellent as an openable retort packaging material. Further, it was found that the retort pouch using the above-mentioned laminated material has retort suitability as good as that of the conventional retort packaging material, and that the retort pouch is very excellent in opening property.

【0025】[0025]

【表1】 [Table 1]

【0026】(注) (1) 引裂き性試験は、レトルト後のパウチを手で横
方向に開封したとき、表側と裏側で引き裂き線がずれて
股裂きの状態となるので、その股裂きの大中小を比較し
たものである。また、手で開封したときの引き裂き強さ
を判定した。 (2) サンプルをレトルト殺菌後、3℃に7日間保存
し、120cmの高さから連続して袋の底から落下す
る。1袋当たり最大30回落下し、計5袋落下して全破
袋数を算出する。平均破袋率=全破袋数/総落下回数と
する。 (3) 引裂き強度は、JIS−P8116のエルメン
ドルフ引裂き強度の測定法に準じて、パウチの開封方向
(積層フィルムのTD方向)について、パウチが引き裂
かれるときの強度を測定した。単位はgである。 (4) シール強度及びラミネート強度は、厚生省告示
20号に準じて、サンプル15mm幅におけるシール強
度とラミネート強度を測定した。単位はkg/15mm
である。 (5) 突き刺し強度は、厚生省告示20号に準じて、
先端0.5R、直径1mmの針により積層フィルムの突
き刺し強度を測定した。単位はkgである。
(Note) (1) In the tearability test, when the pouch after retort is opened in the lateral direction by hand, the tear lines are deviated between the front side and the back side, resulting in a crotch tearing condition. It is a comparison of small and medium. Further, the tear strength when opened by hand was determined. (2) The sample is sterilized by retort, stored at 3 ° C. for 7 days, and continuously dropped from the bottom of the bag from a height of 120 cm. A maximum of 30 times is dropped per bag, and a total of 5 bags are dropped to calculate the total number of broken bags. Average bag breakage rate = total bag breakage / total number of drops. (3) Tear strength was measured according to the method for measuring Elmendorf tear strength of JIS-P8116 in the opening direction of the pouch (TD direction of the laminated film), at which the pouch was torn. The unit is g. (4) The seal strength and the laminate strength were measured according to the Ministry of Health and Welfare Notification No. 20 by measuring the seal strength and the laminate strength in a width of 15 mm of the sample. The unit is kg / 15mm
Is. (5) The piercing strength is based on the Ministry of Health and Welfare Notification No. 20,
The puncture strength of the laminated film was measured with a needle having a tip of 0.5R and a diameter of 1 mm. The unit is kg.

【0027】[0027]

【発明の効果】本発明によれば、レトルト用包材に、直
線的引き裂き性に優れた二軸延伸特殊ナイロンフィルム
を使用することにより、該積層包材が手で直線的に引き
裂くことができるようなレトルト用積層材を作製するこ
とができる。また、前記引き裂き性に優れた積層材を使
用して、レトルト用平パウチやスタンディングパウチを
作製することにより、内容物をこぼすことなく、手で容
易に開封できるようになり、消費者の苦情を解消するこ
とができる。従って、従来のレトルト包材に新しい機能
を付与することになり、販路拡大に役立つ。
According to the present invention, by using a biaxially stretched special nylon film having excellent linear tearability in a packaging material for retort, the laminated packaging material can be torn by hand in a linear manner. Such a retort laminated material can be produced. In addition, by using the above-mentioned laminated material having excellent tearability, a flat pouch for retort and a standing pouch can be easily opened by hand without spilling the contents, and consumer complaints can be obtained. It can be resolved. Therefore, a new function is added to the conventional retort packaging material, which is useful for expanding sales channels.

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

【図1】本発明によるレトルト用積層材の層構成を示す
の断面図である。
FIG. 1 is a cross-sectional view showing a layer structure of a retort laminate material according to the present invention.

【図2】本発明によるレトルトパウチの斜視図である。FIG. 2 is a perspective view of a retort pouch according to the present invention.

【図3】本発明によるレトルトパウチの層構成を示す断
面図である。
FIG. 3 is a cross-sectional view showing a layer structure of a retort pouch according to the present invention.

【符号の説明】[Explanation of symbols]

1 積層材 2 レトルトパウチ 3 シール部 4 積層材の流れ方向 11 PETフィルム 12 Al箔 13 易引裂き性ON 14 CPPフィルム DESCRIPTION OF SYMBOLS 1 Laminated material 2 Retort pouch 3 Seal part 4 Flow direction of laminated material 11 PET film 12 Al foil 13 Easy tearing ON 14 CPP film

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 FI 技術表示箇所 B32B 27/08 9349−4F 27/34 9349−4F B65D 30/02 33/00 C 81/34 // B29K 23:00 77:00 B29L 9:00 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI technical display location B32B 27/08 9349-4F 27/34 9349-4F B65D 30/02 33/00 C 81/34 / / B29K 23:00 77:00 B29L 9:00

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 二軸延伸ポリエチレンテレフタレートフ
ィルム、金属箔、二軸延伸ナイロンフィルム、未延伸ポ
リプロピレンフィルムの順に積層されるレトルト用積層
包材であって、該二軸延伸ナイロンフィルムが直線的引
き裂き性に優れた二軸延伸ナイロンフィルムであること
を特徴とする易開封性レトルト用積層包材。
1. A laminated packaging material for a retort in which a biaxially stretched polyethylene terephthalate film, a metal foil, a biaxially stretched nylon film, and an unstretched polypropylene film are laminated in this order, wherein the biaxially stretched nylon film is linearly tearable. A laminated packaging material for an easily openable retort, which is a biaxially stretched nylon film having excellent properties.
【請求項2】 直線的引き裂き性に優れた二軸延伸ナイ
ロンフィルムと最内層の未延伸ポリプロピレンフィルム
をポリエステルポリウレタン系接着剤1乃至5g/m2
(乾燥状態)を用いてラミネートし、該二軸延伸ナイロ
ンフィルムと未延伸ポリプロピレンフィルムのラミネー
ト強度を800g/15mm幅以上としたことを特徴と
する請求項1に記載のレトルト用積層包材。
2. A biaxially stretched nylon film excellent in linear tearability and an unstretched polypropylene film as an innermost layer are used as a polyester polyurethane adhesive 1 to 5 g / m 2
The laminated packaging material for a retort according to claim 1, wherein the biaxially stretched nylon film and the unstretched polypropylene film are laminated using (dry state) to have a laminate strength of 800 g / 15 mm width or more.
【請求項3】 請求項1及び請求項2に記載の積層包材
を使用してパウチを作製することにより、該パウチが手
で容易に開封できるようにしたことを特徴とする易開封
性レトルトパウチ。
3. An easily openable retort characterized in that a pouch is made by using the laminated packaging material according to claim 1 or 2, whereby the pouch can be easily opened by hand. Pouch.
JP6243459A 1994-09-13 1994-09-13 Easily openable retort pouch Pending JPH0880977A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6243459A JPH0880977A (en) 1994-09-13 1994-09-13 Easily openable retort pouch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6243459A JPH0880977A (en) 1994-09-13 1994-09-13 Easily openable retort pouch

Publications (1)

Publication Number Publication Date
JPH0880977A true JPH0880977A (en) 1996-03-26

Family

ID=17104207

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6243459A Pending JPH0880977A (en) 1994-09-13 1994-09-13 Easily openable retort pouch

Country Status (1)

Country Link
JP (1) JPH0880977A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1614530A1 (en) * 2004-07-06 2006-01-11 Nittel Gmbh & Co. Kg Laminated Multi-Layer Film and Packaging containing said Multi-Layer Film
JP2006150981A (en) * 2006-02-27 2006-06-15 Taisei Lamick Co Ltd Laminated material for easy tearable package, its manufacturing process and packing bag using it
CN102048061A (en) * 2010-11-01 2011-05-11 雀巢公司 Cooking set and application thereof in electric cooker
CN102502054A (en) * 2011-10-20 2012-06-20 利辛县宏达铝塑包装有限公司 Aluminum-foil composite bag and preparation method thereof
CN102837880A (en) * 2011-06-22 2012-12-26 宜昌宏裕塑业有限责任公司 Cooling-resistant plastic aluminum foil compound bag and preparation method thereof
CN103240933A (en) * 2013-05-22 2013-08-14 四川汇利实业有限公司 Biaxially oriented polyester-aluminum-casting polypropylene composite membrane for medicine packaging
CN103507364A (en) * 2013-10-20 2014-01-15 江苏申凯包装高新技术股份有限公司 High-barrier retort pouch
KR102074965B1 (en) * 2018-08-27 2020-02-07 주식회사 새롬코스메틱 Packing pack in which an air communication hole is formed and a manufacturing method thereof
CN111183029A (en) * 2017-10-03 2020-05-19 利奎-保克斯公司 Improved performance characteristics of bags for the aseptic packaging of products
CN111453169A (en) * 2020-04-14 2020-07-28 天长市天粤塑胶有限公司 High resistant separates braided bag
US11383910B2 (en) 2017-09-13 2022-07-12 Liqui-Box Corporation Process for preventing organoleptic degradation in flexibly-packaged sensitive foods and packaged products thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0538779A (en) * 1991-06-18 1993-02-19 Toppan Printing Co Ltd Retort bag
JPH06106692A (en) * 1992-08-11 1994-04-19 Toppan Printing Co Ltd Packing material for sterilization under pressure and heat and packed body using the same

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0538779A (en) * 1991-06-18 1993-02-19 Toppan Printing Co Ltd Retort bag
JPH06106692A (en) * 1992-08-11 1994-04-19 Toppan Printing Co Ltd Packing material for sterilization under pressure and heat and packed body using the same

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1614530A1 (en) * 2004-07-06 2006-01-11 Nittel Gmbh & Co. Kg Laminated Multi-Layer Film and Packaging containing said Multi-Layer Film
JP2006150981A (en) * 2006-02-27 2006-06-15 Taisei Lamick Co Ltd Laminated material for easy tearable package, its manufacturing process and packing bag using it
JP4499674B2 (en) * 2006-02-27 2010-07-07 大成ラミック株式会社 Laminated material for easy tear packaging, method for producing the same, and packaging bag using the same
CN102048061A (en) * 2010-11-01 2011-05-11 雀巢公司 Cooking set and application thereof in electric cooker
CN102837880A (en) * 2011-06-22 2012-12-26 宜昌宏裕塑业有限责任公司 Cooling-resistant plastic aluminum foil compound bag and preparation method thereof
CN102502054A (en) * 2011-10-20 2012-06-20 利辛县宏达铝塑包装有限公司 Aluminum-foil composite bag and preparation method thereof
CN103240933A (en) * 2013-05-22 2013-08-14 四川汇利实业有限公司 Biaxially oriented polyester-aluminum-casting polypropylene composite membrane for medicine packaging
CN103507364A (en) * 2013-10-20 2014-01-15 江苏申凯包装高新技术股份有限公司 High-barrier retort pouch
US11383910B2 (en) 2017-09-13 2022-07-12 Liqui-Box Corporation Process for preventing organoleptic degradation in flexibly-packaged sensitive foods and packaged products thereof
US11878854B2 (en) 2017-09-13 2024-01-23 Liqui-Box Corporation Process for preventing organoleptic degradation in flexibly-packaged sensitive foods and packaged products thereof
CN111183029A (en) * 2017-10-03 2020-05-19 利奎-保克斯公司 Improved performance characteristics of bags for the aseptic packaging of products
KR102074965B1 (en) * 2018-08-27 2020-02-07 주식회사 새롬코스메틱 Packing pack in which an air communication hole is formed and a manufacturing method thereof
CN111453169A (en) * 2020-04-14 2020-07-28 天长市天粤塑胶有限公司 High resistant separates braided bag
CN111453169B (en) * 2020-04-14 2022-02-08 天长市天粤塑胶有限公司 High resistant separates braided bag

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