JP2000263730A - Multilayered sheet and container - Google Patents
Multilayered sheet and containerInfo
- Publication number
- JP2000263730A JP2000263730A JP11074969A JP7496999A JP2000263730A JP 2000263730 A JP2000263730 A JP 2000263730A JP 11074969 A JP11074969 A JP 11074969A JP 7496999 A JP7496999 A JP 7496999A JP 2000263730 A JP2000263730 A JP 2000263730A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- resin layer
- layer
- multilayer sheet
- water vapor
- 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
Landscapes
- Packages (AREA)
- Wrappers (AREA)
- Laminated Bodies (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は食品または飲料等を
収納するためのすぐれた密封性、耐熱性、透明性及び光
沢性を兼備する高温殺菌可能な複合多層シートに関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a high-temperature sterilizable composite multilayer sheet having excellent sealing properties, heat resistance, transparency and gloss for storing foods or beverages.
【０００２】[0002]
【従来の技術】従来から、食品包装用の熱処理可能な高
透明容器としては、内容物の保存や熱殺菌処理の必要性
から、ポリプロピレン／エチレンビニルアルコール共重
合体／ポリプロピレンからなる１ｍｍ程度の厚みの積層
シートを素材とし、透明性を得るために圧空成形や圧空
真空成形と呼ばれる成形方法で成形された合成樹脂性容
器や包装体が使い捨て用として利用されている。しかし
ながら、水蒸気バリア性や耐熱性の要求から、ポリプロ
ピレン、高密度等のポリオレフィン系樹脂を容器の最外
層に使用した場合、成形時の熱により結晶化が進行する
ため良好な透明感が得られないばかりか、その光沢性も
十分ではなかった。また、透明性を重視したポリプロピ
レンコポリマーは、その耐熱性の低さから成形時の離型
性が悪くなるなどの不具合があった。また、ポリカーボ
ネート樹脂を容器の最外層となるように成形し、光沢
性、透明性を付与した製品も販売されているが、ポリカ
ーボネート樹脂は容器形状への成形がその軟化温度の高
さから困難であるという問題が指摘されており、より成
形しやすい高光沢性、透明性を有する多層シートの開発
が待たれている。2. Description of the Related Art Conventionally, as a heat-transparent highly transparent container for food packaging, a thickness of about 1 mm composed of polypropylene / ethylene vinyl alcohol copolymer / polypropylene has been required due to the necessity of preserving contents and heat sterilization. In order to obtain transparency, a synthetic resin container or a package formed by a molding method called air pressure molding or pressure air vacuum molding is used for disposable purposes. However, when a polyolefin-based resin such as polypropylene or high density is used for the outermost layer of the container due to demands for water vapor barrier properties and heat resistance, good transparency cannot be obtained because crystallization proceeds due to heat during molding. Not only that, its gloss was not enough. Further, the polypropylene copolymer which emphasizes transparency has disadvantages such as poor releasability during molding due to its low heat resistance. In addition, polycarbonate resin is molded to be the outermost layer of the container, and glossy and transparent products are also sold.However, polycarbonate resin is difficult to mold into a container shape due to its high softening temperature. It has been pointed out that there is a problem, and development of a multilayer sheet having high glossiness and transparency, which is easier to mold, has been awaited.
【０００３】[0003]
【発明が解決しようとする課題】本発明は従来のガスバ
リアー性があり高温殺菌可能な合成樹脂製容器の性能を
兼備しつつ、飛躍的な透明性と光沢性を備えた複合多層
シートを提供することにある。DISCLOSURE OF THE INVENTION The present invention provides a composite multilayer sheet having the remarkable transparency and gloss while having the performance of a conventional synthetic resin container having gas barrier properties and sterilizable at high temperature. Is to do.
【０００４】[0004]
【課題を解決するための手段】本発明は、テレフタル酸
（以下、ＴＰＡとする）又は、そのエステル形成性誘導
体を酸成分とし、エチレングリコール（以下、ＥＧとす
る）及び、１，４−シクロヘキサンジメタノール（以
下、ＣＨＤＭとする）をグリコール成分とするポリエス
テル樹脂で、さらには、そのグリコール成分中のＣＨＤ
Ｍの共重合モル比率が６５〜９５ｍｏｌ％で酸成分と共
重合されているポリエステル樹脂からなる透明、光沢樹
脂層（Ａ）と、水蒸気バリアー性樹脂層（Ｂ）と、ガス
バリアー性樹脂層（Ｃ）及び熱可塑の支持体樹脂層
（Ｄ）とを外層側からＡ−Ｂ−Ｃ−Ｄの順に積層してな
る複合多層シートであり、必要に応じて接着層をＡ−
Ｂ、Ｂ−Ｃ、Ｃ−Ｄの各層の間に積層した複合多層シー
トである。According to the present invention, terephthalic acid (hereinafter referred to as TPA) or an ester-forming derivative thereof is used as an acid component, and ethylene glycol (hereinafter referred to as EG) and 1,4-cyclohexane are used. A polyester resin containing dimethanol (hereinafter referred to as CHDM) as a glycol component, and further comprising CHD in the glycol component.
A transparent and glossy resin layer (A), a water vapor barrier resin layer (B), and a gas barrier resin layer (A) made of a polyester resin copolymerized with an acid component at a copolymerization molar ratio of M of 65 to 95 mol%. C) and a thermoplastic support resin layer (D) are laminated in the order of ABCD from the outer layer side, and the adhesive layer is formed of A-
It is a composite multilayer sheet laminated between each layer of B, BC, and CD.
【０００５】水蒸気バリアー樹脂層（Ｂ）は、ポリプロ
ピレン樹脂、高密度ポリエチレン樹脂又はポリ塩化ビニ
リデン樹脂であるか、ポリプロピレン樹脂とポリ塩化ビ
ニリデン樹脂が積層された複層樹脂層であることが好ま
しい。更に水蒸気バリアー樹脂層（Ｂ）の水蒸気バリア
ー性（４０℃×９０％ＲＨ下、ＪＩＳ−Ｚ０２０８試験
法）は、１．０ｇ／ｍ2・２４ｈｒ以下であることが好
ましい。酸素ガスバリアー性樹脂層（Ｃ）は、エチレン
ビニルアルコール共重合樹脂でかつエチレン共重合比率
が２０〜４５％であることが好ましい。支持体樹脂層
（Ｄ）は、ポリプロピレン樹脂であることが好ましい。
更に本発明は、上記多層シートをＡ層が最外層になるよ
うに成形した容器である。[0005] The water vapor barrier resin layer (B) is preferably a polypropylene resin, a high-density polyethylene resin or a polyvinylidene chloride resin, or a multilayer resin layer in which a polypropylene resin and a polyvinylidene chloride resin are laminated. Further, the water vapor barrier resin layer (B) preferably has a water vapor barrier property (40 ° C. × 90% RH, JIS-Z0208 test method) of 1.0 g / m 2 · 24 hr or less. The oxygen gas barrier resin layer (C) is preferably an ethylene-vinyl alcohol copolymer resin and preferably has an ethylene copolymerization ratio of 20 to 45%. The support resin layer (D) is preferably a polypropylene resin.
Further, the present invention is a container formed by molding the above-mentioned multilayer sheet so that the layer A is the outermost layer.
【０００６】[0006]
【発明の実施の形態】本発明は、共重合ポリエステル樹
脂からなる透明、光沢樹脂層、水蒸気バリア性樹脂層、
ガスバリアー性樹脂層および熱可塑の支持体樹脂層とを
順次積層してなる複合シートであり、成形品として使用
する場合、透明、光沢性樹脂層が外層側として形成され
ていることが必要である。また、成形品として使用する
場合、例えば、適当な蓋材とシールすることで底材と使
用しても構わないし、凸型に成形して蓋材と使用しても
差し支えない。DETAILED DESCRIPTION OF THE INVENTION The present invention provides a transparent, glossy resin layer, a water vapor barrier resin layer comprising a copolymerized polyester resin,
A composite sheet formed by sequentially laminating a gas barrier resin layer and a thermoplastic support resin layer.When used as a molded product, it is necessary that the transparent, glossy resin layer be formed as the outer layer side. is there. When used as a molded product, for example, it may be used as a bottom material by sealing with an appropriate lid material, or may be formed into a convex shape and used as a lid material.
【０００７】本発明の複合シートの厚みとしては５００
〜１２００μｍのものが好ましいが本発明で規定するも
のではない。透明、光沢性樹脂層（Ａ）は、共重合ポリ
エステル樹脂からなり、シート全体の厚みに対する厚み
比率としては１〜２５％が望ましい。The thickness of the composite sheet of the present invention is 500
A thickness of about 1200 μm is preferable, but is not specified in the present invention. The transparent and glossy resin layer (A) is made of a copolymerized polyester resin, and a thickness ratio of 1 to 25% to the thickness of the entire sheet is desirable.
【０００８】（Ｂ）は水蒸気バリア性樹脂層であり、ポ
リプロピレン（ＰＰ）、ポリ塩化ビニリデン（ＰＶＤ
Ｃ）もしくは高密度ポリエチレン（ＨＤＰＥ）が用いら
れる。ＰＰはメルトフローレートが５．０ｇ／１０ｍｉ
ｎ以下のものが好ましく、ホモポリマー、コポリマー、
ランダム共重合等種々のＰＰを用いることができる。又
低密度ポリエチレン（ＬＤＰＥ）、ＨＤＰＥ等のポリエ
チレン系ポリオレフィンを溶融混合することもできる。
ＰＶＤＣはホモポリマー、アクリルとのコポリマー、ポ
リ塩化ビニル（ＰＶＣ）とのコポリマー等のＰＶＤＣが
用いられる。ＨＤＰＥはここでは比重０．９３以上のポ
リエチレンを言うが、ＨＤＰＥ単独で用いても良いが、
若干量のＬＤＰＥを溶融混合しても良い。また、耐衝撃
性を付与するために必要に応じてエチレンープロピレン
ゴム（ＥＰＲ）等を添加しても構わない。[0008] (B) is a water vapor barrier resin layer, polypropylene (PP), polyvinylidene chloride (PVD)
C) or high density polyethylene (HDPE) is used. PP has a melt flow rate of 5.0 g / 10 mi
n or less are preferable, and a homopolymer, a copolymer,
Various PPs such as random copolymers can be used. Further, a polyethylene-based polyolefin such as low-density polyethylene (LDPE) and HDPE can be melt-mixed.
As PVDC, PVDC such as a homopolymer, a copolymer with acrylic, or a copolymer with polyvinyl chloride (PVC) is used. Although HDPE refers to polyethylene having a specific gravity of 0.93 or more, HDPE may be used alone,
A small amount of LDPE may be melt mixed. Further, ethylene-propylene rubber (EPR) or the like may be added as needed to impart impact resistance.
【０００９】水蒸気バリアー樹脂層（Ｂ）の水蒸気バリ
アー性は４０℃×９０％ＲＨ下でＪＩＳ−Ｚ０２０８試
験法で１．０ｇ／ｍ2・２４ｈｒ以下が好ましい。
（Ｃ）のガスバリア層としてはポリビニルアルコールも
しくはエチレンビニルアルコール共重合体（ＥＶＯＨ）
が用いられる。ＥＶＯＨの場合エチレン共重合比率が２
０〜４５％のものが好ましい。支持体樹脂層（Ｄ）は各
種熱可塑性樹脂を用いることができるが、容器耐熱性及
び容器保形性、容器加工成形性等の特性を勘案し選択す
るが、好ましくはＰＰ，ＰＥ樹脂を用いる。The water vapor barrier property of the water vapor barrier resin layer (B) is preferably 1.0 g / m 2 · 24 hr or less according to a JIS-Z0208 test method at 40 ° C. × 90% RH.
As the gas barrier layer of (C), polyvinyl alcohol or ethylene vinyl alcohol copolymer (EVOH)
Is used. In the case of EVOH, the ethylene copolymerization ratio is 2
Those having 0 to 45% are preferred. Various thermoplastic resins can be used for the support resin layer (D). The thermoplastic resin is selected in consideration of properties such as heat resistance of the container, shape retention of the container, moldability of the container, and the like. Preferably, PP or PE resin is used. .
【００１０】これらの樹脂を積層する方法としては共押
出法、共押出ラミネート法、押出ラミネート法、ドライ
ラミネート法等の公知の積層化技術が用いられる。また
これらの積層化のために各樹脂間を接着させるためには
個々の樹脂間に適した接着剤、あるいは接着性樹脂が用
いられるが不要な場合もあり得る。また、これらの多層
シートを容器に成型する方法としては一般的には真空成
形法、圧空成形法、圧空真空成形法、冷間加工法が用い
られる。As a method for laminating these resins, known laminating techniques such as a coextrusion method, a coextrusion laminating method, an extruding laminating method and a dry laminating method are used. In order to bond these resins for lamination, an adhesive or an adhesive resin suitable between the individual resins is used, but it may not be necessary in some cases. In addition, as a method of forming these multilayer sheets into a container, generally, a vacuum forming method, a compressed air forming method, a compressed air vacuum forming method, and a cold working method are used.
【００１１】本発明の作用について説明する。最外層の
透明、光沢樹脂層は従来の透明タイプシートに比較し
て、透明感及び、光沢に優れるため、任意の容器形状に
成形して使用した場合は、その内容物の見栄えを良くす
る効果がある。透明、光沢樹脂層を構成するポリエステ
ル樹脂には、グリコール成分としてＣＨＤＭを共重合さ
せているが、ＥＧのみをグリコール成分とするポリエス
テル樹脂や、酸成分にＴＰＡの他にイソフタル酸（以
下、ＩＰＡとする）を共重合させたポリエステル樹脂に
比較して、透明性、深絞り性が良好であることは一般に
知られている。ＴＰＡ、ＥＧ、ＣＨＤＭの３成分系で構
成されるポリエステル樹脂は既に上市されていて、広く
使用されている。しかしながら、ＩＰＡを共重合したポ
リエステル樹脂では、温水処理程度（８０℃、３０ｍｉ
ｎ）で容易に再結晶化して白濁してしまう。また、ＴＰ
Ａ、ＥＧ、ＣＨＤＭの３成分系の共重合ポリエステルに
おいても、熱水処理（９０℃、３０ｍｉｎ）では該ポリ
エステル樹脂どうしでの融着が容易に起こり、特に、最
外層材料として使用する場合には致命的な欠陥となって
いる。また、１，４シクロヘキシルジメチレンテレフタ
レート（以下、ＰＣＴとする）のように、酸成分にＴＰ
Ａ、グリコール成分にＣＨＤＭを持つポリエステル樹脂
も一部では検討されているが、結晶化速度が強いために
熱水処理により白濁することが知られている。これらの
現状を鑑み、本発明では共重合させるグリコール成分中
のＣＨＤＭ量を６５〜９５モル％に限定することで、製
膜時に特別な冷却装置を使用することなく良好な透明性
と光沢性が得られ、熱水処理でも該ポリエステル樹脂ど
うしでの熱融着や結晶化の進行による白濁がおこらず、
良好な透明性と光沢性を維持できる。ＣＨＤＭの共重合
比率が６５モル％未満であると耐熱水性の不足から外層
に使用した場合には、ポリエステル樹脂層どうしの融着
が起こり実使用に耐えない。また、ＣＨＤＭの共重合比
率が９５モル％を超えると共重合ポリエステル樹脂の結
晶化が熱水処理時に進みやすくなり、白濁するために実
使用に耐えない。ガスバリア性樹脂層の外面には水蒸気
バリアー樹脂層が位置し、ガスバリア樹脂層の外気から
の水分による吸水時にバリアー性の低下を防ぐ効果を有
し、ガスバリア性樹脂層は内容物の酸素による腐敗、変
質を防ぐ効果、即ち酸素バリアー効果と、同内容物のフ
レーバーの容器外への透過、拡散を防ぐ効果を有してい
る。 本発明による複合多層シートは従来からある積層
用シートの持つ水蒸気バリア性、ガスバリア性、高温殺
菌適性を具備しつつ上記効果を兼ね備えるものである。The operation of the present invention will be described. Since the outermost transparent and glossy resin layer is more transparent and glossy than conventional transparent type sheets, the effect of improving the appearance of the contents when molded and used in an arbitrary container shape is used. There is. In the polyester resin constituting the transparent and glossy resin layer, CHDM is copolymerized as a glycol component. However, a polyester resin containing only EG as a glycol component, and an acid component other than TPA as well as isophthalic acid (hereinafter IPA). It is generally known that transparency and deep drawability are better than those of a polyester resin obtained by copolymerizing the same. Polyester resins composed of a three-component system of TPA, EG, and CHDM are already on the market and widely used. However, in the case of a polyester resin copolymerized with IPA, the degree of hot water treatment (80 ° C., 30 mi
In the case of n), it is easily recrystallized and becomes cloudy. Also, TP
Even in the case of a three-component copolymerized polyester of A, EG, and CHDM, fusion between the polyester resins easily occurs during hot water treatment (90 ° C., 30 minutes), and particularly when used as the outermost layer material. It is a fatal flaw. Further, as in 1,4 cyclohexyl dimethylene terephthalate (hereinafter referred to as PCT), TP is added to the acid component.
A. A polyester resin having CHDM as a glycol component has been studied in some cases, but it is known that it becomes cloudy by hot water treatment because of its high crystallization rate. In view of these circumstances, in the present invention, by limiting the amount of CHDM in the glycol component to be copolymerized to 65 to 95 mol%, good transparency and gloss can be obtained without using a special cooling device during film formation. Obtained, even in hot water treatment does not occur cloudiness due to the progress of heat fusion and crystallization between the polyester resins,
Good transparency and gloss can be maintained. When the copolymerization ratio of CHDM is less than 65 mol%, when used for the outer layer due to lack of hot water resistance, fusion between the polyester resin layers occurs and the product cannot withstand actual use. On the other hand, if the copolymerization ratio of CHDM exceeds 95 mol%, crystallization of the copolymerized polyester resin tends to proceed at the time of hot water treatment and becomes cloudy, so that it is not practically usable. A water vapor barrier resin layer is located on the outer surface of the gas barrier resin layer, and has an effect of preventing a decrease in barrier properties when water is absorbed by moisture from the outside air of the gas barrier resin layer. It has an effect of preventing deterioration, that is, an oxygen barrier effect, and an effect of preventing the same content from permeating and diffusing the flavor to the outside of the container. The composite multilayer sheet according to the present invention has the above-mentioned effects while having the water vapor barrier property, gas barrier property, and high-temperature sterilization suitability of the conventional laminating sheet.
【００１２】[0012]
【実施例】以下実施例により、本発明の効果を説明す
る。表１に本発明に用いた実施例と比較例のために用い
た多層シートの構成を示す。これらの多層シートは共押
出法により作製したものである。これらの多層シートを
シート状態のものと、間接加熱式の圧空真空成型機を用
いて口径７０ｍｍφ、高さ３０ｍｍ、底径３０ｍｍφに
成形した容器とで、９５℃、６０ｍｉｎの熱水殺菌後の
各容器の透明性、光沢性及び、外層樹脂どうしでの熱融
着及び、白化の状況について評価を行った。結果を表２
に示した。EXAMPLES The effects of the present invention will be described below with reference to examples. Table 1 shows the configurations of the multilayer sheets used for the examples and comparative examples used in the present invention. These multilayer sheets were produced by a co-extrusion method. Each of these multi-layer sheets in a sheet state and a container formed to have a diameter of 70 mmφ, a height of 30 mm, and a bottom diameter of 30 mmφ using an indirect heating type pneumatic vacuum forming machine were subjected to hot water sterilization at 95 ° C. for 60 min. The transparency and glossiness of the container and the state of heat fusion between the outer layer resins and whitening were evaluated. Table 2 shows the results
It was shown to.
【００１３】表１中の略号は以下の通りである。 ＰＰ１：ポリプロピレンホモポリマー ＰＰ２：エチレン−プロピレンコポリマー ＰＰ３：透明エチレン−プロピレンランダムコポリマー ＥＶＯＨ：エチレンビニルアルコール共重合体 酸成分 ク゛リコ―ル成分 共重合体ホ゜リエステル: テレフタル酸 エチレンク゛リコ―ル/1,4-シクロヘキサンシ゛メタノ―ル=35/65 共重合体ホ゜リエステル: テレフタル酸 エチレンク゛リコ―ル/1,4-シクロヘキサンシ゛メタノ―ル=20/80 共重合体ホ゜リエステル: テレフタル酸 エチレンク゛リコ―ル/1,4-シクロヘキサンシ゛メタノ―ル=5/95 共重合体ホ゜リエステル: テレフタル酸/イソフタル酸=80/20 エチレンク゛リコ―ル 共重合体ホ゜リエステル: テレフタル酸 エチレンク゛リコ―ル/1,4-シクロヘキサンシ゛メタノ―ル=67/33 共重合体ホ゜リエステル: テレフタル酸 1,4-シクロヘキサンシ゛メタノ―ル (単位；モル％）The abbreviations in Table 1 are as follows. PP1: Polypropylene homopolymer PP2: Ethylene-propylene copolymer PP3: Transparent ethylene-propylene random copolymer EVOH: Ethylene vinyl alcohol copolymer Acid component Polyglycol component Copolymer polyester: Terephthalic acid Ethylene glycol / 1,4-cyclohexane Polymetholene = 35/65 copolymer polyester: terephthalic acid ethylene glycol / 1,4-cyclohexanedimethylethanol = 20/80 copolymer polyester: terephthalic acid ethylene glycol / 1,4-cyclohexane Dimethanol = 5/95 copolymer polyester: terephthalic acid / isophthalic acid = 80/20 ethylene glycol copolymer polyester: terephthalic acid ethylene glycol / 1,4-cyclohexane styrene = 67 / 33 copolymer polyester: terephthalic acid 1,4-cyclohexanediethanol (unit: mol%)
【００１４】表２中の評価方法は以下の通りである。 曇度：ＪＩＳ−Ｋ７１０５により測定。 鏡面光沢：ＪＩＳ−Ｚ８７４１（６０°）により測定。The evaluation methods in Table 2 are as follows. Haze: Measured according to JIS-K7105. Specular gloss: measured according to JIS-Z8741 (60 °).
【００１５】[0015]
【表１】 [Table 1]
【００１６】[0016]
【表２】 [Table 2]
【００１７】[0017]
【発明の効果】本発明の複合多層シートでは、従来存在
していた合成樹脂多層容器に比べて、透明性、光沢性、
耐熱水性に優れている。According to the composite multilayer sheet of the present invention, transparency, gloss, and the like are higher than those of the conventional synthetic resin multilayer container.
Excellent hot water resistance.
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 3E067 AA03 AA11 AB01 AB26 BB14A BB16A BB25A BC07A CA05 CA06 CA11 CA17 CA24 EA06 GC01 4F100 AK01D AK05B AK07B AK07D AK07E AK16B AK16E AK41A AK41J AK42A AK42J AK64 AK69C AL01A AL03 AR00B AR00C BA04 BA05 BA07 BA10A BA10D DA01 EH20 GB16 GB23 JB16D JD02 JD02C JD04B JD04E JJ03 JN01 JN01A JN21 JN21A YY00A YY00B YY00C YY00E ──────────────────────────────────────────────────続 き Continued from the front page F term (reference) BA10D DA01 EH20 GB16 GB23 JB16D JD02 JD02C JD04B JD04E JJ03 JN01 JN01A JN21 JN21A YY00A YY00B YY00C YY00E
Claims (7)
誘導体を酸成分とし、エチレングリコール及び、１，４
−シクロヘキサンジメタノールをグリコール成分とする
ポリエステル樹脂で、かつグリコール成分中の１，４−
シクロヘキサンジメタノールの共重合モル比率が６５〜
９５ｍｏｌ％で酸成分と共重合されているポリエステル
樹脂からなる透明、光沢樹脂層（Ａ）と、水蒸気バリア
ー性樹脂層（Ｂ）と、ガスバリアー性樹脂層（Ｃ）及び
熱可塑の支持体樹脂層（Ｄ）とを外層側からＡ−Ｂ−Ｃ
−Ｄの順に積層してなることを特徴とする多層シート。A terephthalic acid or an ester-forming derivative thereof is used as an acid component, and ethylene glycol and 1,4
A polyester resin containing cyclohexanedimethanol as a glycol component, and 1,4-
The copolymerization molar ratio of cyclohexanedimethanol is 65 to 65.
A transparent, glossy resin layer (A), a water vapor barrier resin layer (B), a gas barrier resin layer (C), and a thermoplastic support resin made of a polyester resin copolymerized with an acid component at 95 mol%. Layer (D) and ABC from the outer layer side
A multilayer sheet characterized by being laminated in the order of -D.
ロピレン樹脂、高密度ポリエチレン樹脂又はポリ塩化ビ
ニリデン樹脂である請求項１記載の多層シート。2. The multilayer sheet according to claim 1, wherein the water vapor barrier resin layer (B) is a polypropylene resin, a high-density polyethylene resin, or a polyvinylidene chloride resin.
ロピレン樹脂とポリ塩化ビニリデン樹脂が積層された複
層樹脂層である請求項１記載の多層シート。3. The multilayer sheet according to claim 1, wherein the water vapor barrier resin layer (B) is a multilayer resin layer in which a polypropylene resin and a polyvinylidene chloride resin are laminated.
９０％ＲＨ下、ＪＩＳ−Ｚ０２０８試験法での水蒸気バ
リアー性が、１．０ｇ／ｍ2・２４ｈｒ以下である請求
項１、２、又は３記載の多層シート。4. The water vapor barrier resin layer (B) at 40 ° C.
The multilayer sheet according to claim 1, 2 or 3, having a water vapor barrier property according to a JIS-Z0208 test method of 1.0 g / m 2 · 24 hr or less under 90% RH.
チレンビニルアルコール共重合樹脂で、かつエチレン共
重合比率が２０〜４５％である請求項１、２、３、又は
４記載の多層シート。5. The multilayer sheet according to claim 1, wherein the oxygen gas barrier resin layer (C) is an ethylene vinyl alcohol copolymer resin and the ethylene copolymerization ratio is 20 to 45%. .
樹脂である請求項１、２、３、４、又は５記載の多層シ
ート。6. The multilayer sheet according to claim 1, wherein the support resin layer (D) is a polypropylene resin.
最外層になるように成形した容器。7. A container formed by molding the multilayer sheet according to claim 1 so that layer A is the outermost layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07496999A JP3719873B2 (en) | 1999-03-19 | 1999-03-19 | Multi-layer sheet and container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07496999A JP3719873B2 (en) | 1999-03-19 | 1999-03-19 | Multi-layer sheet and container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000263730A true JP2000263730A (en) | 2000-09-26 |
| JP3719873B2 JP3719873B2 (en) | 2005-11-24 |
Family
ID=13562645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP07496999A Expired - Fee Related JP3719873B2 (en) | 1999-03-19 | 1999-03-19 | Multi-layer sheet and container |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3719873B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002178470A (en) * | 2000-12-14 | 2002-06-26 | Kureha Chem Ind Co Ltd | Film for deep drawing |
| WO2004065121A1 (en) * | 2003-01-23 | 2004-08-05 | Okura Industrial Co., Ltd. | Laminated film for bottom material of container produced by deep drawing |
| JP2007098579A (en) * | 2005-09-30 | 2007-04-19 | Mitsubishi Plastics Ind Ltd | Deep drawing film, bottom material for deep draw package and deep draw package |
| JP2008110604A (en) * | 2006-10-06 | 2008-05-15 | Nippon Synthetic Chem Ind Co Ltd:The | Vacuum adiabatic structure and multi-layered film |
| JP2015223701A (en) * | 2014-05-26 | 2015-12-14 | 住友ベークライト株式会社 | Sheet and package |
| JP2016049704A (en) * | 2014-08-29 | 2016-04-11 | 長瀬産業株式会社 | Thermoforming sheet and food tray |
| CN116330790A (en) * | 2023-05-31 | 2023-06-27 | 合肥长阳新材料科技有限公司 | Furanyl high-barrier transparent heat-resistant polyester film and preparation method thereof |
-
1999
- 1999-03-19 JP JP07496999A patent/JP3719873B2/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002178470A (en) * | 2000-12-14 | 2002-06-26 | Kureha Chem Ind Co Ltd | Film for deep drawing |
| JP4553482B2 (en) * | 2000-12-14 | 2010-09-29 | 株式会社クレハ | Film for deep drawing |
| WO2004065121A1 (en) * | 2003-01-23 | 2004-08-05 | Okura Industrial Co., Ltd. | Laminated film for bottom material of container produced by deep drawing |
| JP2007098579A (en) * | 2005-09-30 | 2007-04-19 | Mitsubishi Plastics Ind Ltd | Deep drawing film, bottom material for deep draw package and deep draw package |
| JP2008110604A (en) * | 2006-10-06 | 2008-05-15 | Nippon Synthetic Chem Ind Co Ltd:The | Vacuum adiabatic structure and multi-layered film |
| JP2015223701A (en) * | 2014-05-26 | 2015-12-14 | 住友ベークライト株式会社 | Sheet and package |
| JP2016049704A (en) * | 2014-08-29 | 2016-04-11 | 長瀬産業株式会社 | Thermoforming sheet and food tray |
| CN116330790A (en) * | 2023-05-31 | 2023-06-27 | 合肥长阳新材料科技有限公司 | Furanyl high-barrier transparent heat-resistant polyester film and preparation method thereof |
| CN116330790B (en) * | 2023-05-31 | 2023-08-29 | 合肥长阳新材料科技有限公司 | Furanyl high-barrier transparent heat-resistant polyester film and preparation method thereof |
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|---|---|
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