JPH03239534A - Laminated body - Google Patents
Laminated bodyInfo
- Publication number
- JPH03239534A JPH03239534A JP3485590A JP3485590A JPH03239534A JP H03239534 A JPH03239534 A JP H03239534A JP 3485590 A JP3485590 A JP 3485590A JP 3485590 A JP3485590 A JP 3485590A JP H03239534 A JPH03239534 A JP H03239534A
- Authority
- JP
- Japan
- Prior art keywords
- synthetic resin
- resin film
- thermoplastic synthetic
- film
- foam
- 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.)
- Granted
Links
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 42
- 239000000057 synthetic resin Substances 0.000 claims abstract description 42
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 20
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 20
- 229920005989 resin Polymers 0.000 claims abstract description 19
- 239000011347 resin Substances 0.000 claims abstract description 19
- 239000006260 foam Substances 0.000 claims description 30
- 229920001955 polyphenylene ether Polymers 0.000 claims description 20
- 239000004793 Polystyrene Substances 0.000 claims description 13
- 229920002223 polystyrene Polymers 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 9
- 210000004927 skin cell Anatomy 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 abstract description 10
- 230000001070 adhesive effect Effects 0.000 abstract description 10
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 239000011230 binding agent Substances 0.000 abstract description 2
- 239000012943 hotmelt Substances 0.000 abstract description 2
- 238000003475 lamination Methods 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 206010059837 Adhesion Diseases 0.000 abstract 1
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 16
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 12
- 239000004604 Blowing Agent Substances 0.000 description 5
- 210000004027 cell Anatomy 0.000 description 5
- 239000008188 pellet Substances 0.000 description 5
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 3
- 239000001273 butane Substances 0.000 description 3
- 229920006026 co-polymeric resin Polymers 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000004898 kneading Methods 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- 229920000265 Polyparaphenylene Polymers 0.000 description 2
- -1 Polyphenylene Polymers 0.000 description 2
- 238000010411 cooking Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- PXBRQCKWGAHEHS-UHFFFAOYSA-N dichlorodifluoromethane Chemical compound FC(F)(Cl)Cl PXBRQCKWGAHEHS-UHFFFAOYSA-N 0.000 description 2
- 235000019404 dichlorodifluoromethane Nutrition 0.000 description 2
- 210000001339 epidermal cell Anatomy 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical group CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- OEVVKKAVYQFQNV-UHFFFAOYSA-N 1-ethenyl-2,4-dimethylbenzene Chemical compound CC1=CC=C(C=C)C(C)=C1 OEVVKKAVYQFQNV-UHFFFAOYSA-N 0.000 description 1
- CISIJYCKDJSTMX-UHFFFAOYSA-N 2,2-dichloroethenylbenzene Chemical compound ClC(Cl)=CC1=CC=CC=C1 CISIJYCKDJSTMX-UHFFFAOYSA-N 0.000 description 1
- SBYMUDUGTIKLCR-UHFFFAOYSA-N 2-chloroethenylbenzene Chemical compound ClC=CC1=CC=CC=C1 SBYMUDUGTIKLCR-UHFFFAOYSA-N 0.000 description 1
- JQXYBDVZAUEPDL-UHFFFAOYSA-N 2-methylidene-5-phenylpent-4-enoic acid Chemical compound OC(=O)C(=C)CC=CC1=CC=CC=C1 JQXYBDVZAUEPDL-UHFFFAOYSA-N 0.000 description 1
- PYSRRFNXTXNWCD-UHFFFAOYSA-N 3-(2-phenylethenyl)furan-2,5-dione Chemical compound O=C1OC(=O)C(C=CC=2C=CC=CC=2)=C1 PYSRRFNXTXNWCD-UHFFFAOYSA-N 0.000 description 1
- JLBJTVDPSNHSKJ-UHFFFAOYSA-N 4-Methylstyrene Chemical compound CC1=CC=C(C=C)C=C1 JLBJTVDPSNHSKJ-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 239000004338 Dichlorodifluoromethane Substances 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- GYCMBHHDWRMZGG-UHFFFAOYSA-N Methylacrylonitrile Chemical compound CC(=C)C#N GYCMBHHDWRMZGG-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- 229920000147 Styrene maleic anhydride Polymers 0.000 description 1
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical compound CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- MPMBRWOOISTHJV-UHFFFAOYSA-N but-1-enylbenzene Chemical compound CCC=CC1=CC=CC=C1 MPMBRWOOISTHJV-UHFFFAOYSA-N 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 210000002615 epidermis Anatomy 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000005003 food packaging material Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920003145 methacrylic acid copolymer Polymers 0.000 description 1
- 229940117841 methacrylic acid copolymer Drugs 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 210000003491 skin Anatomy 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は新規な積層体に関し、更に詳しくは、接着強度
の改善された、合成樹脂発泡体と合成樹脂フィルムとの
積層体に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a novel laminate, and more particularly to a laminate of a synthetic resin foam and a synthetic resin film that has improved adhesive strength.
今日、食品等の成型容器用材料として、例えばポリスチ
レンペーパー（ＰＳＰ）に種々の合成樹脂フィルムを積
層した材料が広く用いられている。BACKGROUND ART Today, materials such as polystyrene paper (PSP) laminated with various synthetic resin films are widely used as materials for molded containers for foods and the like.
この合成樹脂フィルムの積層の目的は、表面性の改善、
容器強度の向上等を図ることにある。The purpose of laminating this synthetic resin film is to improve surface properties,
The aim is to improve the strength of the container.
ところで、近年、電子レンジの普及に伴ってｌｏｏ’ｃ
以上の耐熱性が要求されるようになってきている。この
耐熱性向上の要求に対しては、発泡シート及びフィルム
の画素材の検討は盛んに行われているもの、発泡シート
とフィルムとの接着性については殆ど着目されていない
。しかし乍ら、電子レンジによる調理や加熱殺菌処理に
おいて、接着部の剥離が大きな問題となっており、これ
の解決が期待されている。By the way, in recent years, with the spread of microwave ovens, loo'c
There is a growing demand for higher heat resistance. In response to this demand for improved heat resistance, foamed sheets and films are being actively studied as picture materials, but little attention has been paid to the adhesion between foamed sheets and films. However, during microwave cooking and heat sterilization, peeling of the adhesive has become a major problem, and a solution to this problem is expected.
（問題点を解決するための手段〕
一般に、積層体の接着強度は３００ｇ／１５ａ１１巾程
度と、あまり大きい接着強度は要求されないで実用に耐
えている。これに対し、容器のトップシールの強度は２
．３ｋｇ／１５＋ｍ巾（レトルト処理）と１オーダー程
度大きい接着強度が要求される。この差は面接着と線接
着の差である。即ち、線接着の場合は線接着部に集中応
力が掛り、この応力に耐える接着強度が必要とされるの
である。(Means for solving the problem) Generally, the adhesive strength of the laminate is about 300g/15a11 width, which is sufficient for practical use without requiring much adhesive strength.On the other hand, the strength of the top seal of the container is 2
．． 3kg/15+m width (retort processing) and an order of magnitude higher adhesive strength are required. This difference is between surface adhesion and line adhesion. That is, in the case of line bonding, concentrated stress is applied to the line bonded portion, and adhesive strength is required to withstand this stress.
本発明者らは、表面が凹凸状の発泡シートと平滑なフィ
ルムとを積層すればその接着部は線接着となっていると
の考えから、この線接着を面接着に近づけるべく鋭意研
究の結果、本発明に到達したものである。The inventors believe that if a foam sheet with an uneven surface and a smooth film are laminated together, the bond will be line bonding, and as a result of intensive research to make line bonding closer to surface bonding. , this invention has been achieved.
即ち、本発明は、耐熱性発泡体と合成樹脂フィルムとの
間に、下記の条件を満足する熱可塑性合成樹脂フィルム
を介在させ加熱接着してなる積層体；
Ｔｂ２１００℃
Ｔｂ≧Ｔ≧Ｔｂ−３０℃
ｔ≧（ｌ／２−π／１２）ｄ、好ましくはし≧１／２ｄ
但し、Ｔ：熱可塑性合成樹脂フィルムのビカット軟化温
度
Ｔｂ：耐熱性発泡体の素材樹脂のビカット軟化温度
ｔ：熱可塑性合成樹脂フィルムの厚さ
ｄ：合成樹脂発泡体の表皮セル径
を内容とするものである。That is, the present invention provides a laminate formed by interposing a thermoplastic synthetic resin film that satisfies the following conditions between a heat-resistant foam and a synthetic resin film and thermally adhering them; Tb2100°C Tb≧T≧Tb-30 °C t≧(l/2−π/12)d, preferably ≧1/2d, where T: Vicat softening temperature of the thermoplastic synthetic resin film Tb: Vicat softening temperature of the material resin of the heat-resistant foam t: Heat Thickness d of the plastic synthetic resin film: This refers to the outer skin cell diameter of the synthetic resin foam.
本発明に用いられる合成樹脂発泡体としては特に制限な
く公知のものが全て用いられるが、電子レンジ用の容器
用素材としてはポリフェニレンエーテル系樹脂が好適で
ある。ポリフェニレン系樹脂としてはポリフェニレンエ
ーテルとポリスチレンとの混合樹脂及びポリフェニレン
エーテルとスチレンとの共重合樹脂が含まれるが、製造
が容易である点で前者の方が好ましい。As the synthetic resin foam used in the present invention, any known synthetic resin foam can be used without particular limitation, but polyphenylene ether resin is suitable as a material for a container for a microwave oven. Polyphenylene resins include mixed resins of polyphenylene ether and polystyrene and copolymer resins of polyphenylene ether and styrene, but the former is preferred because it is easier to manufacture.
本発明に用いられるポリフェニレンエーテルとしては例
えばポリ（２，６−シメチルフエニレン１４−エーテル
）、ポリ（２−メチル−６エチルフエニレンー１，４−
エーテル）、ポリ（２，６−ダニチルフェニレン−１，
４−エーテル）、ポリ（２−メチル−６−ｎ−プロピル
フェニレン−１，４−エーテル）、ポリ（２−メチル６
−ｎ−ブチルフェニレン−１，４−エーテル）、ポリ（
２−メチル−６−クロルフェニレン−１，４−エーテル
）、ポリ（２−メチル−６−プロムフエニレンー１．４
−エーテル）、ポリ（２−エチル−６−クロルフェニレ
ン−１，４エーテル）が挙げられる。Examples of the polyphenylene ether used in the present invention include poly(2,6-dimethylphenylene-14-ether), poly(2-methyl-6ethylphenylene-1,4-ether), and poly(2-methyl-6ethylphenylene-1,4-ether).
ether), poly(2,6-danitylphenylene-1,
4-ether), poly(2-methyl-6-n-propylphenylene-1,4-ether), poly(2-methyl 6
-n-butylphenylene-1,4-ether), poly(
2-methyl-6-chlorophenylene-1,4-ether), poly(2-methyl-6-promphenylene-1.4
-ether) and poly(2-ethyl-6-chlorophenylene-1,4 ether).
本発明に用いられる共重合されるスチレン又はブレンド
されるポリスチレンとしては、例えばスチレン、α−メ
チルスチレン、２．４−ジメチルスチレン、モノクロル
スチレン、ジクロルスチレン、ｐ−メチルスチレン、エ
チルスチレンが挙げられるが、ポリフェニレンエーテル
の熱安定性を充分に発揮させるためにはスチレンが好ま
しい。Examples of the copolymerized styrene or blended polystyrene used in the present invention include styrene, α-methylstyrene, 2,4-dimethylstyrene, monochlorostyrene, dichlorostyrene, p-methylstyrene, and ethylstyrene. However, in order to fully exhibit the thermal stability of polyphenylene ether, styrene is preferred.
上記ポリフェニレンエーテル、（ポリ）スチレンのいず
れにおいても、それぞれと共重合可能な化合物、例えば
アクリロニトリル、メタクリロニトリル、メチル（メタ
）アクリレート、エチル（メタ）アクリレート、ブチル
（メタ）アクリレート等を１種又は２種以上共重合させ
たものも包含される。In both of the above polyphenylene ether and (poly)styrene, one or more compounds copolymerizable with each, such as acrylonitrile, methacrylonitrile, methyl (meth)acrylate, ethyl (meth)acrylate, butyl (meth)acrylate, etc. Copolymerizations of two or more types are also included.
本発明の発泡シートのポリフェニレンエーテルと（ポリ
）スチレンの割合は、ポリフェニレンエーテル４０〜９
０重量％に対しくポリ）スチレン６０〜１０重量％が好
適である。ポリフェニレンエーテルが４０重量％未満で
は、レトルト処理（１２０°Ｃ×３０分以上）において
、耐熱性不足のために発泡体が変形したり、セルを破壊
し、その結果、積層体においてもフィルム剥離又は変形
が発生することになる。一方、ポリフェニレンエーテル
が９０重量％を超えると一般の押出機では昇温不足又は
過負荷によって押出発泡が非常に困難となり、また、た
とえ押出できたとしても剪断発熱を抑制することができ
ず、良好な発泡体を得ることができない。The ratio of polyphenylene ether and (poly)styrene in the foamed sheet of the present invention is 40 to 9
60 to 10% by weight of poly)styrene is preferred relative to 0% by weight. If polyphenylene ether is less than 40% by weight, the foam may be deformed or cells may be destroyed due to insufficient heat resistance during retort treatment (120°C x 30 minutes or more), resulting in film peeling or cell destruction in the laminate. Deformation will occur. On the other hand, if polyphenylene ether exceeds 90% by weight, extrusion foaming becomes extremely difficult in general extruders due to insufficient temperature rise or overload, and even if extrusion is possible, shear heat generation cannot be suppressed, resulting in poor performance. It is not possible to obtain a suitable foam.
ポリフェニレンエーテル系樹脂の発泡体は、ポリフェニ
レンエーテルとスチレンとの共重合樹脂又はポリフェニ
レンエーテルとポリスチレンと混合樹脂とを押出機によ
り混練してペレット化し、該ペレットに発泡剤を高温高
圧下で圧入し混練した後、発泡最適温度に調節して低圧
帯（通常大気中）に押出す方法が好適である。このよう
に予めペレット化したものを原料とすることにより、特
にポリフェニレンエーテルとポリスチレンとの混合樹脂
を用いる場合に両者の混合分散性が改善され、高発泡倍
率で均一気泡の発泡体が得られる。Polyphenylene ether resin foam is produced by kneading a copolymer resin of polyphenylene ether and styrene or a mixed resin of polyphenylene ether, polystyrene, and resin into pellets using an extruder, then press-feeding a blowing agent into the pellets under high temperature and pressure, and kneading. After that, it is preferable to adjust the foaming temperature to the optimum temperature and extrude it into a low pressure zone (usually in the atmosphere). By using the previously pelletized material as a raw material, especially when using a mixed resin of polyphenylene ether and polystyrene, the mixing and dispersibility of both is improved, and a foam with a high expansion ratio and uniform cells can be obtained.
このように混練して得られたペレットは混合分散性が改
善されているので、このペレットに、上記混合割合の範
囲内で更にポリスチレンを添加することもできる。この
場合のポリスチレンの添加量はペレット１００重量部に
対し１５０重量部以下が好ましい。１５０重量部を超え
て添加すると、気泡ムラが発生する。Since the pellets obtained by kneading in this manner have improved mixing and dispersibility, it is also possible to further add polystyrene to the pellets within the above mixing ratio range. In this case, the amount of polystyrene added is preferably 150 parts by weight or less per 100 parts by weight of the pellets. If more than 150 parts by weight is added, uneven air bubbles will occur.
ポリフェニレンエーテル系樹脂の発泡体の製造に用いら
れる発泡剤としては公知の発泡剤が用いられるが、ジク
ロロジフルオロメタン（フレオン１２）、１ｓｏ−ブタ
ンを主成分とする炭化水素系発泡剤が好適である。後者
は環境汚染や破壊の問題もなく特に好適である。１ｓｏ
−ブタンを主成分とする炭化水素系発泡剤としては、１
ｓｏ−ブタン５０〜１００重量％とｎ−ブタン５０〜０
重量％からなる組成が好適である。Known blowing agents are used as blowing agents for producing polyphenylene ether resin foams, but hydrocarbon blowing agents containing dichlorodifluoromethane (Freon 12) and 1so-butane as main components are suitable. . The latter is particularly suitable since there are no problems of environmental pollution or destruction. 1so
- As a hydrocarbon blowing agent whose main component is butane, 1
50-100% by weight of so-butane and 50-0% by weight of n-butane
Compositions consisting of % by weight are preferred.
発泡体は、レトルトやレンジ用の食品包装材料の場合に
は、発泡倍率３〜２０倍、厚さ５ＩＩＩｇ１以下のシー
ト状であることが望ましい。In the case of a food packaging material for a retort or microwave, the foam is preferably in the form of a sheet with an expansion ratio of 3 to 20 times and a thickness of 5IIIg1 or less.
本発明に用いられる合成樹脂フィルムとしては、特に制
限されず従来表面性や強度の改善に用いられている合成
樹脂フィルムを用いることができるが、レトルト用又は
電子レンジ用の容器素材として利用される場合は、耐熱
性、耐油性及び耐酸素バリヤー性を付与するため、ポリ
エステル系フィルム、ポリアミド系フィルム、ポリビニ
ルアルコール系フィルム、ポリ塩化ビニリデン系フィル
ム等が好適である。The synthetic resin film used in the present invention is not particularly limited, and synthetic resin films conventionally used to improve surface properties and strength can be used, but the synthetic resin film used as a material for containers for retorts or microwave ovens can be used. In this case, polyester films, polyamide films, polyvinyl alcohol films, polyvinylidene chloride films, etc. are suitable in order to impart heat resistance, oil resistance, and oxygen barrier properties.
本発明に用いられる熱可塑性合成樹脂フィルムとしては
、下記の条件を満足するものが用いられる。The thermoplastic synthetic resin film used in the present invention is one that satisfies the following conditions.
Ｔｂ≧１００ ’Ｃ
Ｔｂ≧Ｔ≧Ｔｂ−３０″Ｃ
ｔ≧（１／２−に／１２）ｄ、好ましくはｔ≧１／２ｄ
但し、Ｔ：熱可塑性合成樹脂フィルムのビカット軟化温
度
Ｔｂ：耐熱性発泡体の素材樹脂のビカット軟化温度
ｔ：熱可塑性合成樹脂フィルムの厚さ
ｄ：合成樹脂発泡体の表皮セル径
熱可塑性合成樹脂フィルムのビカット軟化温度（Ｔ）が
合成樹脂発泡体のビカット軟化温度（Ｔｂ）よりも高い
と、該フィルムが合成樹脂発泡体の表面の凹凸を充分に
埋めて平滑面とすることができず、また（Ｔ）が（Ｔｂ
−３０℃）よりも低いと、耐熱性が不充分となる。また
熱可塑性合成樹脂フィルムの厚さ（１）が（（１／２−
π／１２）ｄ〕よりも小さいと、合成樹脂発泡体の表皮
のセルとセルとの隙間、即ち凹凸を充分に埋めて平滑面
とすることができない、このような条件を満足する樹脂
としては、ポリスチレン系フィルムが好適である。ここ
でいうポリスチレン系フィルムの素材としては、スチレ
ン−無水マレイン酸共重合樹脂、スチレン−メタクリル
酸共重合樹脂、ポリフエニレンエーテルーポリスチレン
混合樹脂等が例示される。Tb≧100'C Tb≧T≧Tb-30''C t≧(1/2-to/12)d, preferably t≧1/2d However, T: Vicat softening temperature of thermoplastic synthetic resin film Tb: Heat resistance Resin Vicat softening temperature t: Thickness of thermoplastic synthetic resin film d: Skin cell diameter of synthetic resin foam Vicat softening temperature (T) of thermoplastic synthetic resin film If the temperature is higher than (Tb), the film will not be able to sufficiently fill in the irregularities on the surface of the synthetic resin foam to form a smooth surface, and if (T) is higher than (Tb).
-30°C), the heat resistance will be insufficient. Also, the thickness (1) of the thermoplastic synthetic resin film is ((1/2-
If it is smaller than π/12)d, it will not be possible to sufficiently fill the gaps between the cells of the skin of the synthetic resin foam, that is, the unevenness, to form a smooth surface.As a resin that satisfies these conditions, , polystyrene-based films are preferred. Examples of the material for the polystyrene film mentioned here include styrene-maleic anhydride copolymer resin, styrene-methacrylic acid copolymer resin, polyphenylene ether-polystyrene mixed resin, and the like.
熱可塑性合成樹脂フィルムの合成樹脂発泡体への接着は
、例えば加熱ロールによる熱接着、バインダーラ果ネー
ト、ホットメルト等のいずれの方法でもよい。The thermoplastic synthetic resin film may be adhered to the synthetic resin foam by any method such as thermal adhesion using a heating roll, binder lamination, hot melt, or the like.
以下、本発明を実施例及び比較例に基づいて更に詳細に
説明するが、本発明はこれらにより何ら制限を受けるも
のではない。Hereinafter, the present invention will be explained in more detail based on Examples and Comparative Examples, but the present invention is not limited by these in any way.
尚、表皮セル径については、発泡体の断面を電子顕微鏡
により１０倍に拡大したセル写真を撮り、表皮１層目の
セルの厚さ方向の径を１０箇所測定し、この平均値を表
皮セル径（ｄ）とした。Regarding the epidermal cell diameter, take a photo of the cross section of the foam magnified 10 times using an electron microscope, measure the diameter of the cells in the first layer of the epidermis at 10 points in the thickness direction, and calculate the average value as the epidermal cell diameter. The diameter was set as (d).
ｄ−Σｄ ｉ／１０
実施例１．２、比較例１〜５
ポリフェニレンエーテル系樹脂（ポリフェニレンエーテ
ル／ポリスチレン＝ｓｏ１５ｏ）発泡シート（厚さ１．
５ ｔｒｍ ）に塩化ビニリデンフィルムを積層するに
際し、まず塩化ビニリデンフィルム（厚さ２５μｍ）と
各種熱可塑性合成樹脂フィルムをウレタン系接着剤でド
ライラミネートし、得られた積層フィルムとポリフェニ
レンエーテル系樹脂発泡シートとを２００°Ｃの加熱ロ
ールにより加熱積層を行った。d-Σd i/10 Example 1.2, Comparative Examples 1 to 5 Polyphenylene ether resin (polyphenylene ether/polystyrene = SO15O) foam sheet (thickness 1.
When laminating a vinylidene chloride film (5 trm), first dry-laminate a vinylidene chloride film (thickness 25 μm) and various thermoplastic synthetic resin films with a urethane adhesive, and then combine the resulting laminated film with a polyphenylene ether resin foam sheet. and were heated and laminated using a heated roll at 200°C.
得られた積層発泡シートを蒸気殺菌処理（１２０℃×３
０分、１３０’ＣＸ３０分）し、発泡シートと塩化ビニ
リデンフィルムとの積層部の剥離状況を観察し、下記の
３段階で評価した。結果を第１表に示す。The obtained laminated foam sheet was steam sterilized (120℃ x 3
0 minutes, 130'CX 30 minutes), and the state of peeling of the laminated portion of the foam sheet and vinylidene chloride film was observed and evaluated on the following three scales. The results are shown in Table 1.
Ｏ：剥離なし
Δ：発泡シートの表面の凹凸が拡大している×：剥離あ
り
比較例６〜８
塩化ビニリデンフィルムに各種のホントメルトタイプの
接着剤を発泡シートに塗布した他は上記実施例と同様に
して積層部の剥離状況を観察、評価した。結果を第２表
に示す。O: No peeling Δ: Expanded irregularities on the surface of the foam sheet ×: Peeling Comparative Examples 6 to 8 Same as the above examples except that various true melt type adhesives were applied to the vinylidene chloride film on the foam sheet. In the same manner, the peeling state of the laminated portion was observed and evaluated. The results are shown in Table 2.
第 ２ 表
〔作用・効果〕
叙上の通り、本発明の積層体は、中間層として熱可塑性
合成樹脂フィルムを介在させることにより、発泡体表面
の凹凸が熱可塑性合成樹脂フィルムにより埋められ、そ
の結果、発泡体と、積層される合成樹脂フィルムとは線
接着から面接着となり、大きな接着強度を有する。かく
して、本発明の積層体は、
電子レンジでの調理やレトルトの殺
菌処理の高温下でも剥離しない良好な特性を特徴するTable 2 [Operations and Effects] As mentioned above, in the laminate of the present invention, by interposing a thermoplastic synthetic resin film as an intermediate layer, the unevenness on the surface of the foam is filled with the thermoplastic synthetic resin film, As a result, the foam and the laminated synthetic resin film change from line adhesion to surface adhesion, and have high adhesive strength. Thus, the laminate of the present invention is characterized by good properties that it does not peel off even under high temperatures during microwave cooking and retort sterilization.
Claims (1)
条件を満足する熱可塑性合成樹脂フィルムを介在させ加
熱接着してなる積層体。 Ｔ＿ｂ≧１００℃ Ｔ＿ｂ≧Ｔ≧Ｔ＿ｂ−３０℃ ｔ≧（１／２−π／１２）ｄ 但し、Ｔ：熱可塑性合成樹脂フィルムのビカット軟化温
度 Ｔ＿ｂ：耐熱性発泡体の素材樹脂のビカット軟化温度 ｔ：熱可塑性合成樹脂フィルムの厚さ ｄ：合成樹脂発泡体の表皮セル径 ２、ｔ≧１／２ｄである請求項１記載の積層体。 ３、耐熱性発泡体がポリフェニレンエーテル系樹脂から
なり、発泡倍率３〜２０倍、厚さ５ｍｍ以下のシートで
ある請求項１記載の積層体。 ４、ポリフェニレンエーテル系樹脂がポリフェニレンエ
ーテル４０〜９０重量％とポリスチレン６０〜１０重量
％からなる請求項３記載の積層体。 ５、熱可塑性合成樹脂フィルムがポリスチレン系フィル
ムである請求項１乃至４の各項記載の積層体。[Claims] 1. A laminate formed by heat-bonding a thermoplastic synthetic resin film that satisfies the following conditions between a heat-resistant foam and a synthetic resin film. T_b≧100℃ T_b≧T≧T_b−30℃ t≧(1/2−π/12)d However, T: Vicat softening temperature of thermoplastic synthetic resin film T_b: Vicat softening temperature of material resin of heat-resistant foam 2. The laminate according to claim 1, wherein t: thickness of thermoplastic synthetic resin film d: outer skin cell diameter of synthetic resin foam 2, and t≧1/2d. 3. The laminate according to claim 1, wherein the heat-resistant foam is a sheet made of polyphenylene ether resin, has an expansion ratio of 3 to 20 times, and has a thickness of 5 mm or less. 4. The laminate according to claim 3, wherein the polyphenylene ether resin comprises 40 to 90% by weight of polyphenylene ether and 60 to 10% by weight of polystyrene. 5. The laminate according to any one of claims 1 to 4, wherein the thermoplastic synthetic resin film is a polystyrene film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2034855A JP2521550B2 (en) | 1990-02-15 | 1990-02-15 | Laminate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2034855A JP2521550B2 (en) | 1990-02-15 | 1990-02-15 | Laminate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03239534A true JPH03239534A (en) | 1991-10-25 |
| JP2521550B2 JP2521550B2 (en) | 1996-08-07 |
Family
ID=12425792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2034855A Expired - Lifetime JP2521550B2 (en) | 1990-02-15 | 1990-02-15 | Laminate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2521550B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0781647A1 (en) * | 1995-12-27 | 1997-07-02 | Kaneka Corporation | Laminated foam sheet and the molded body thereof for vehicle interior |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55117975U (en) * | 1979-02-14 | 1980-08-20 | ||
| JPS5937169A (en) * | 1982-08-19 | 1984-02-29 | 柿本 亮策 | Refrigerating vessel |
| JPS61137740A (en) * | 1984-12-08 | 1986-06-25 | 日本スチレンペ−パ−株式会社 | Laminated sheet for molding |
| JPS61103302U (en) * | 1984-12-08 | 1986-07-01 | ||
| JPS6290222A (en) * | 1985-10-16 | 1987-04-24 | Sekisui Plastics Co Ltd | Polystyrene resin foam sheet |
| JPS6345936A (en) * | 1986-08-11 | 1988-02-26 | Nec Corp | Data processing system |
| JPS63205223A (en) * | 1987-02-20 | 1988-08-24 | 鐘淵化学工業株式会社 | Laminated foam sheet for molding |
| JPS6487339A (en) * | 1987-09-30 | 1989-03-31 | Kanegafuchi Chemical Ind | Laminated foamed sheet for molding |
-
1990
- 1990-02-15 JP JP2034855A patent/JP2521550B2/en not_active Expired - Lifetime
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55117975U (en) * | 1979-02-14 | 1980-08-20 | ||
| JPS5937169A (en) * | 1982-08-19 | 1984-02-29 | 柿本 亮策 | Refrigerating vessel |
| JPS61137740A (en) * | 1984-12-08 | 1986-06-25 | 日本スチレンペ−パ−株式会社 | Laminated sheet for molding |
| JPS61103302U (en) * | 1984-12-08 | 1986-07-01 | ||
| JPS6290222A (en) * | 1985-10-16 | 1987-04-24 | Sekisui Plastics Co Ltd | Polystyrene resin foam sheet |
| JPS6345936A (en) * | 1986-08-11 | 1988-02-26 | Nec Corp | Data processing system |
| JPS63205223A (en) * | 1987-02-20 | 1988-08-24 | 鐘淵化学工業株式会社 | Laminated foam sheet for molding |
| JPS6487339A (en) * | 1987-09-30 | 1989-03-31 | Kanegafuchi Chemical Ind | Laminated foamed sheet for molding |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0781647A1 (en) * | 1995-12-27 | 1997-07-02 | Kaneka Corporation | Laminated foam sheet and the molded body thereof for vehicle interior |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2521550B2 (en) | 1996-08-07 |
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