JP3255777B2 - Laminated film and hermetically sealed container using the same - Google Patents
Laminated film and hermetically sealed container using the sameInfo
- Publication number
- JP3255777B2 JP3255777B2 JP28425693A JP28425693A JP3255777B2 JP 3255777 B2 JP3255777 B2 JP 3255777B2 JP 28425693 A JP28425693 A JP 28425693A JP 28425693 A JP28425693 A JP 28425693A JP 3255777 B2 JP3255777 B2 JP 3255777B2
- Authority
- JP
- Japan
- Prior art keywords
- styrene
- laminated film
- polystyrene
- film
- container
- 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 - Fee Related
Links
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 55
- 239000000463 material Substances 0.000 claims description 26
- 239000004793 Polystyrene Substances 0.000 claims description 18
- 229920002223 polystyrene Polymers 0.000 claims description 18
- 229920000642 polymer Polymers 0.000 claims description 15
- 229920002725 thermoplastic elastomer Polymers 0.000 claims description 9
- 239000011347 resin Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- 238000010030 laminating Methods 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 16
- 238000007789 sealing Methods 0.000 description 15
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 5
- 239000002356 single layer Substances 0.000 description 5
- 238000003475 lamination Methods 0.000 description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 description 4
- 239000005020 polyethylene terephthalate Substances 0.000 description 4
- 238000011049 filling Methods 0.000 description 3
- 229920010524 Syndiotactic polystyrene Polymers 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 229920000468 styrene butadiene styrene block copolymer Polymers 0.000 description 2
- 229920001935 styrene-ethylene-butadiene-styrene Polymers 0.000 description 2
- 101100160821 Bacillus subtilis (strain 168) yxdJ gene Proteins 0.000 description 1
- 229920000219 Ethylene vinyl alcohol Polymers 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000009820 dry lamination Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 229920005669 high impact polystyrene Polymers 0.000 description 1
- 239000004797 high-impact polystyrene Substances 0.000 description 1
- 238000007757 hot melt coating Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 229920001098 polystyrene-block-poly(ethylene/propylene) Polymers 0.000 description 1
- 229920002742 polystyrene-block-poly(ethylene/propylene) -block-polystyrene Polymers 0.000 description 1
- 229920000346 polystyrene-polyisoprene block-polystyrene Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000003856 thermoforming Methods 0.000 description 1
- 238000004056 waste incineration Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Containers Having Bodies Formed In One Piece (AREA)
- Laminated Bodies (AREA)
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、蓋材用スチレン系重合
体積層フィルム、及びそれを用いた密閉容器に関する。
さらに詳しくは、食品、薬品、雑貨、文房具等の包装材
料として好適に用いられる蓋材用スチレン系重合体、及
びそれを用いた密閉容器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a styrenic polymer laminated film for a lid material and a sealed container using the same.
More specifically, the present invention relates to a styrenic polymer for a lid material suitably used as a packaging material for foods, medicines, miscellaneous goods, stationery and the like, and a closed container using the same.
【0002】[0002]
【従来の技術】従来、密閉容器用として、ポリスチレン
系成形容器本体とともに用いられる蓋材には、ポリエチ
レンテレフタレート(PET)、アルミニウム、及びシ
ール層からなる積層フィルム、又は紙、アルミニウム、
及びシール層からなる積層フィルムが使用されてきた。
また、PET、及びポリオレフィン系シール層からなる
積層フィルムも用いられてきた。2. Description of the Related Art Conventionally, for a closed container, a lid material used together with a polystyrene-based molded container body includes a laminated film made of polyethylene terephthalate (PET), aluminum, and a sealing layer, or paper, aluminum,
And a laminated film comprising a sealing layer.
Also, a laminated film composed of PET and a polyolefin-based seal layer has been used.
【0003】[0003]
【発明が解決しようとする課題】しかし、前者のアルミ
ニウムを積層フィルム中に含む蓋材の場合には、廃棄焼
却時に、アルミニウムが十分燃焼せず、焼却炉内に溶融
付着して炉を損傷するとともに、製造コストが高いとい
う問題があった。また、容器本体と蓋材とが異種のポリ
マーからなるため、同時に一括回収することができない
という問題があった。However, in the case of the lid material containing aluminum in the laminated film, the aluminum does not burn sufficiently at the time of waste incineration and melts and adheres to the incinerator to damage the furnace. In addition, there is a problem that the manufacturing cost is high. Further, since the container body and the lid member are made of different kinds of polymers, there is a problem that they cannot be collectively collected at the same time.
【0004】一方、後者のPET、及びポリオレフィン
シール層からなる積層フィルムを用いた蓋材の場合に
は、蓋材がカールし易いため、蓋材を一葉ごとに供給
(毎葉供給)してシールすることができず、カールを防
止するためには、アルミニウム層を積層中に含める必要
があるという問題があった。また、蓋材と容器本体と
が、異種のポリマーからなるため、やはり同時に一括回
収することができないという問題があった。On the other hand, in the case of the latter using a laminated film composed of PET and a polyolefin seal layer, the lid is easily curled, so that the lid is supplied one by one (supplied every leaf) and sealed. In order to prevent curling, it is necessary to include an aluminum layer in the lamination. Further, since the lid member and the container body are made of different kinds of polymers, there is a problem that they cannot be collectively collected at the same time.
【0005】さらに、前記以外に、汎用スチレン系樹脂
で蓋材を構成することも行なわれたが、耐熱性が十分で
はないため、溶着密閉が困難であり、溶着密閉を必要と
する容器には適用できないという問題があった。本発明
は、上述の問題に鑑みなされたものであり、焼却や毎葉
供給が容易で、溶着密封性に優れ、安価であるとともに
一括回収が可能な蓋材用スチレン系重合体積層フィル
ム、及びそれを用いた密閉容器を提供することを目的と
する。[0005] In addition to the above, a lid material is also made of a general-purpose styrene resin, but it is difficult to seal by welding because of insufficient heat resistance. There was a problem that it could not be applied. The present invention has been made in view of the above-described problems, and is easy to incinerate and supply every time, has excellent weld sealing properties, is inexpensive, and can be collectively recovered, and is a styrene-based polymer laminated film for a cover material, and An object is to provide a closed container using the same.
【0006】[0006]
【課題を解決するための手段】上記目的を達成するた
め、本発明によれば、下記スチレン系基材フィルム
(1)と、下記スチレン系重合体との熱溶着性が良好な
シール層(2)とを積層してなる蓋材用スチレン系重合
体積層フィルムが提供される。 (1)一層以上の、主としてシンジオタクチック構造を
有するスチレン系重合体、又はその組成物からなる延伸
フィルム (2)スチレン系熱可塑性エラストマー、ポリスチレ
ン、及びスチレン系熱可塑性エラストマーとポリスチレ
ンとの混合樹脂からなる群から選ばれる一以上の材料の
層からなる積層体According to the present invention, in order to attain the above object, according to the present invention, a seal layer (2) having good heat weldability between the following styrene-based substrate film (1) and the following styrene-based polymer is provided. ) Is provided. (1) One or more stretched films composed of one or more styrene-based polymers mainly having a syndiotactic structure or a composition thereof (2) Styrene-based thermoplastic elastomer, polystyrene, and mixed resin of styrene-based thermoplastic elastomer and polystyrene A laminate comprising one or more layers of materials selected from the group consisting of
【0007】また、前記積層フィルムと、スチレン系材
料からなる成形容器本体とからなる密閉容器が提供され
る。Further, there is provided a sealed container comprising the laminated film and a molded container body made of a styrene-based material.
【0008】以下、本発明を具体的に説明する。本発明
の蓋材用スチレン系重合体積層フィルムは、スチレン系
基材フィルム(1)と、スチレン系重合体との熱溶着性
が良好なシール層(2)との積層体として構成されてい
る。Hereinafter, the present invention will be described specifically. The styrenic polymer laminated film for a lid material of the present invention is constituted as a laminate of a styrenic base film (1) and a seal layer (2) having good heat-weldability with a styrenic polymer. .
【0009】1.スチレン系基材フィルム(1) 本発明に用いられるスチレン系基材フィルム(1)とし
ては、一層以上の、主としてシンジオタクチック構造を
有するスチレン系重合体(A)、又はその組成物からな
る延伸フィルムを挙げることができる。具体的には、一
層以上の、(A)の単体のフィルムを一軸又は二軸に
延伸したフィルム、(A)と、スチレン系エラストマ
ーとしてのSBS,SIS,SEBS,SEP,SEP
S等の一種以上との組成物からなるフィルムを一軸又は
二軸に延伸したフィルム等を挙げることができる。ま
た、上記及びのフィルムの二以上をさらに積層した
ものであってもよい。1. Styrene-based base film (1) As the styrene-based base film (1) used in the present invention, one or more styrene-based polymers (A) mainly having a syndiotactic structure, or a stretch made of a composition thereof Films may be mentioned. More specifically, one or more monoaxially or biaxially stretched films of (A), (A) and SBS, SIS, SEBS, SEP, SEP as styrene elastomers
A film obtained by uniaxially or biaxially stretching a film made of a composition with at least one of S and the like can be given. Further, two or more of the above films may be further laminated.
【0010】2.スチレン系重合体との熱溶着性が良好
なシール層(2) 本発明に用いられるシール層(2)としては、スチレン
系熱可塑性エラストマー、ポリスチレン、及びスチレン
系熱可塑性エラストマーとポリスチレンとの混合樹脂か
らなる群から選ばれる一以上の材料の層からなる積層体
を挙げることができる。 具体的には、スチレン系熱可塑性エラストマーとして
のSBS,SIS,SEBS,SEP,SEPSの各単
層体、又は一種以上の複層からなる積層体、ポリスチ
レンの単層体、前記一種以上のスチレン系熱可塑性エ
ラストマーのそれぞれと、ポリスチレンとの混合樹脂の
各単層体又は一種以上の複層からなる積層体、上記
〜の単層体又は積層体の二以上を、さらに積層した積
層体、を挙げることができる。[0010] 2. Sealing layer (2) having good thermal adhesion to styrene-based polymer (2) The sealing layer (2) used in the present invention may be a styrene-based thermoplastic elastomer, polystyrene, or a mixed resin of styrene-based thermoplastic elastomer and polystyrene. And a laminate comprising one or more layers of materials selected from the group consisting of: Specifically, a single layer of SBS, SIS, SEBS, SEP, and SEPS as a styrene thermoplastic elastomer, or a laminate of one or more layers, a single layer of polystyrene, and one or more styrene-based thermoplastic elastomers Each of the thermoplastic elastomers, a single-layer body of a mixed resin of polystyrene or a laminate composed of one or more multilayers, and a laminate in which two or more of the above-described single-layer bodies or laminates are further laminated. be able to.
【0011】3.基材フィルム(1)とシール層(2)
との積層方法 本発明で用いられる基材フィルム(1)とシール層
(2)とを積層する方法としては、特に制限はないが、
たとえば、ドライラミネート、熱ラミネート、押出しラ
ミネート等の方法を挙げることができる。また、エマル
ジョンコート、ホットメルトコーティングを用いてもよ
い。この場合、一以上の基材フィルム(1)と一以上の
シール層(2)とを用いて積層フィルム全体として、二
層以上となるように積層する。3. Base film (1) and seal layer (2)
The method for laminating the base film (1) and the sealing layer (2) used in the present invention is not particularly limited,
For example, methods such as dry lamination, heat lamination, and extrusion lamination can be used. Further, an emulsion coat or a hot melt coating may be used. In this case, two or more layers are laminated as a whole laminated film using one or more base films (1) and one or more seal layers (2).
【0012】4.密閉容器 本発明の密閉容器に用いられる容器本体としては、スチ
レン系材料からなる成形容器であれば特に制限はない
が、たとえば、単層ポリスチレン、ポリスチレン、
及びエチレンビニルアルコール共重合体の積層体多層
ポリスチレン紙及び多層ポリスチレンの積層体等から
なるものを挙げることができる。4. Closed container The container body used in the closed container of the present invention is not particularly limited as long as it is a molded container made of a styrene-based material. For example, single-layer polystyrene, polystyrene,
And a laminate of an ethylene vinyl alcohol copolymer and a laminate of a multilayer polystyrene paper and a multilayer polystyrene.
【0013】[0013]
【実施例】以下、本発明を実施例によってさらに具体的
に説明する。 1.蓋材フィルムの調製 スチレンモノマー1100ppm,結晶化度35%,シ
ンジオタクティシティーがラセミペンタットで93%の
シンジオタクチックポリスチレンペレットを320℃で
押出し成形し、シート状成形体を得た。このシート状成
形体を縦横にそれぞれ95℃,115℃で各3倍延伸
し、その延伸フィルムを255℃で100秒間熱固定
し、30μmの厚さのSPSフィルムを得た。このフィ
ルムに押出し温度250℃でスチレン量50%のSEP
(MFR0.2g/10分,200℃,10kg)を2
0μmの厚みで押出しラミネートした。EXAMPLES The present invention will be described more specifically with reference to the following examples. 1. Preparation of Lid Film A syndiotactic polystyrene pellet having a styrene monomer content of 1100 ppm, a crystallinity of 35%, and a syndiotacticity of 93% by racemic pentat was extruded at 320 ° C. to obtain a sheet-like molded product. This sheet-like molded product was stretched three times each at 95 ° C. and 115 ° C. vertically and horizontally, and the stretched film was heat-set at 255 ° C. for 100 seconds to obtain an SPS film having a thickness of 30 μm. SEP with an extruding temperature of 250 ° C and styrene content of 50%
(MFR 0.2g / 10min, 200 ℃, 10kg)
Extrusion lamination was performed at a thickness of 0 μm.
【0014】2.スチレン系成形容器本体の調製 ハイインパクトポリスチレンシートからなる平均肉厚
0.4mmの容器本体を真空圧空熱成形により作製し
た。2. Preparation of Styrene-Based Molded Container Main Body A container main body made of a high-impact polystyrene sheet and having an average thickness of 0.4 mm was produced by vacuum pressure air thermoforming.
【0015】3.蓋材のカール 毎葉供給する蓋材としては、内径72mmφ、外径86
mmφのポリスチレン製容器本体のフランジ部(厚み
0.8mm)外周部分の形状に予め打ち抜いておいたも
のを使用した。そして蓋材のシールゾーンへの供給のた
め充填シール機の蓋材装填部にこの打ち抜かれた蓋材3
000枚を重ね合せてセットした。充填シール機として
はロバートボッシュ社製の機械を使用した。この充填シ
ール機は、蓋材を吸盤により減圧吸引してセット部から
一枚一枚取り出し、前記ポリスチレン製容器のフランジ
上に載置する機構が備っているが、蓋材にカールが無い
ため吸引が適確に行われ蓋材の、容器フランジ上への毎
葉供給を円滑に行うことができた。3. The curl of the lid material The lid material to be supplied for each leaf has an inner diameter of 72 mmφ, an outer diameter of 86
The pre-punched shape of the outer periphery of the flange portion (thickness: 0.8 mm) of the polystyrene container main body of mmφ was used. Then, in order to supply the lid material to the sealing zone, the punched lid material 3 is placed in the lid loading section of the filling and sealing machine.
000 sheets were set one on top of the other. A machine manufactured by Robert Bosch was used as a filling and sealing machine. This filling and sealing machine has a mechanism in which the lid material is suctioned under reduced pressure by a suction cup and taken out one by one from the set portion and placed on the flange of the polystyrene container, but since the lid material has no curl. Suction was performed properly, and the leaf material could be smoothly supplied to the container flange on the container flange.
【0016】4.ヒートシール性 内径72mmφ,外径86mmφポリスチレン製容器の
フランジ部(厚み0.8mm)に幅2mmのシールバー
でシールした。シール条件は、シールバー温度200
℃、シール時間1秒間、押圧圧力5kg/cm2とし
た。その結果、基材フィルムは熱による破断がなく良好
なシールが行われた。4. Heat sealability A flange (diameter: 0.8 mm) of a polystyrene container having an inner diameter of 72 mm and an outer diameter of 86 mm was sealed with a seal bar having a width of 2 mm. Sealing conditions are as follows: seal bar temperature 200
C., the sealing time was 1 second, and the pressing pressure was 5 kg / cm 2 . As a result, the base film did not break due to heat and was sealed well.
【0017】5.回収性 上記ポリスチレン容器本体50kgに対し1kgの蓋材
を一括回収し粉砕混合した後、造粒したものを再び25
0℃にて製膜した。その結果、外観良好なポリスチレン
系シートを得ることができた。5. Collectability 1 kg of the lid material is collectively collected with respect to 50 kg of the polystyrene container body, crushed and mixed.
A film was formed at 0 ° C. As a result, a polystyrene sheet having good appearance was obtained.
【0018】[0018]
【発明の効果】以上説明したように、本発明によって、
焼却や毎葉供給が容易で、かつ溶着密封性(ヒートシー
ル性)に優れ、安価であるとともに、同種の材料の積層
体であるため、回収が可能な蓋材用スチレン系重合体積
層フィルムを提供することができる。また、本発明の密
閉容器は、焼却が容易で、かつ、密封性に優れ、安価で
あるとともに、蓋材と成形容器本体とが同種の材料を用
いるため、一括回収が可能であり、資源の有効利用を図
ることができる。As described above, according to the present invention,
Since it is easy to incinerate and supply every leaf, has excellent weld sealing properties (heat sealing properties), is inexpensive, and because it is a laminate of the same type of material, a styrene-based polymer laminated film for lid material that can be recovered is used. Can be provided. In addition, the closed container of the present invention is easy to incinerate, has excellent sealing properties, is inexpensive, and since the lid material and the molded container body use the same type of material, collective collection is possible and resources can be saved. Effective utilization can be achieved.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7,DB名) B32B 27/30 B32B 1/02 B32B 25/04 - 25/08 B32B 27/00 B65D 1/09 ──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. 7 , DB name) B32B 27/30 B32B 1/02 B32B 25/04-25/08 B32B 27/00 B65D 1/09
Claims (2)
下記スチレン系重合体との熱溶着性が良好なシール層
(2)とを積層してなる蓋材用スチレン系重合体積層フ
ィルム。 (1)一層以上の、主としてシンジオタクチック構造を
有するスチレン系重合体、又はその組成物からなる延伸
フィルム (2)スチレン系熱可塑性エラストマー、ポリスチレ
ン、及びスチレン系熱可塑性エラストマーとポリスチレ
ンとの混合樹脂からなる群から選ばれる一以上の材料の
層からなる積層体1. A styrene-based film (1) described below,
A styrene-based polymer laminated film for a cover material, which is obtained by laminating a seal layer (2) having good heat-weldability with the following styrene-based polymer. (1) One or more stretched films composed of one or more styrene-based polymers mainly having a syndiotactic structure or a composition thereof (2) Styrene-based thermoplastic elastomer, polystyrene, and mixed resin of styrene-based thermoplastic elastomer and polystyrene A laminate comprising one or more layers of materials selected from the group consisting of
ン系材料からなる成形容器本体とからなる密閉容器。2. A closed container comprising the laminated film according to claim 1 and a molded container main body made of a styrene-based material.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP28425693A JP3255777B2 (en) | 1993-10-19 | 1993-10-19 | Laminated film and hermetically sealed container using the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP28425693A JP3255777B2 (en) | 1993-10-19 | 1993-10-19 | Laminated film and hermetically sealed container using the same |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH07112516A JPH07112516A (en) | 1995-05-02 |
JP3255777B2 true JP3255777B2 (en) | 2002-02-12 |
Family
ID=17676177
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP28425693A Expired - Fee Related JP3255777B2 (en) | 1993-10-19 | 1993-10-19 | Laminated film and hermetically sealed container using the same |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3255777B2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5380866B2 (en) * | 2008-03-13 | 2014-01-08 | 住友化学株式会社 | LAMINATE, CLOSED CLOSED CONTAINING THE SAME, AND CLOSED CONTAINER |
JP2011126190A (en) * | 2009-12-18 | 2011-06-30 | Tomoegawa Paper Co Ltd | Syndiotactic polystyrene-based sheet-like laminate, method for producing the same and syndiotactic polystyrene-based sheet-like hard coat laminate |
-
1993
- 1993-10-19 JP JP28425693A patent/JP3255777B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
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JPH07112516A (en) | 1995-05-02 |
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