JP2018537318A - 熱成形用途における使用に好適な多層膜 - Google Patents
熱成形用途における使用に好適な多層膜 Download PDFInfo
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- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
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- B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
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- B65D65/38—Packaging materials of special type or form
- B65D65/40—Applications of laminates for particular packaging purposes
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- B32B2250/00—Layers arrangement
- B32B2250/03—3 layers
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- B32B2250/05—5 or more layers
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- B32B2250/00—Layers arrangement
- B32B2250/24—All layers being polymeric
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/24—All layers being polymeric
- B32B2250/242—All polymers belonging to those covered by group B32B27/32
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
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- B32B2250/00—Layers arrangement
- B32B2250/42—Alternating layers, e.g. ABAB(C), AABBAABB(C)
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2270/00—Resin or rubber layer containing a blend of at least two different polymers
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- B32B2307/00—Properties of the layers or laminate
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- B32B2307/724—Permeability to gases, adsorption
- B32B2307/7242—Non-permeable
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- B32B2307/70—Other properties
- B32B2307/724—Permeability to gases, adsorption
- B32B2307/7242—Non-permeable
- B32B2307/7246—Water vapor barrier
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- B32B2307/738—Thermoformability
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Abstract
【選択図】図1
Description
熱成形は、製造の容易さ、低コスト、高速、及び高性能のため、包装用途において最も頻繁に使用される熱可塑性膜形成技術のうちの1つである。熱成形包装には概して、剛性及び可撓性の2つのタイプがある。剛性熱成形シートについては、典型的に使用される主要材料は、ポリスチレン(PS)、ポリエステル(ポリエチレンテレフタラート(PET)を含む)、及びポリプロピレン(PP)である。可撓性熱成形包装については、良好な熱成形性を可能にする良好な熱−機械特性により欠くことができないと概してみなされるポリアミド(PA)層またはポリプロピレン(PP)層の存在から結果的に生じる構造の複雑性により、共押出が通常使用される。
本明細書で明らかにされるように、本発明の多層膜は、少なくとも3つの層を含む。いくつかの実施形態において、本発明の多層膜は、最多11の層を含む。層の数は、膜についての意図された用途(例えば、物品または使用)、膜の所望の厚さ、膜が1つ以上のバリア層を組み込むかどうか、及びその他を含む、いくつかの因子に依存し得る。いくつかの実施形態において、多層膜は、3〜11の層を含む。3〜11の層の個々の値及び部分範囲は、本明細書に含まれ、本明細書に開示される。例えば、多層膜は、種々の実施形態において、3、4、5、6、7、8、9、10、または11の層を有し得る。
本発明の実施形態は、環状オレフィンコポリマーを(先に説明した構成要素のうちの1つ以上に加えて)多層膜の1つ以上の層中へ有利に組み込む。環状オレフィンコポリマーは、1つ以上の他の構成要素とブレンドされて、本明細書における教示に基づく当業者に既知の技術を用いて膜内に層を形成することができる。
本発明の多層膜は好ましくは、10μm〜250μm、好ましくは50μm〜200μm、または100μm〜180μmの範囲で全体の厚さ(熱成形の前)を有する。個々の層の厚さは、入手可能な層の数、層のタイプ(例えば、スキン層、バリア層、内側層など)及び膜の全体の厚さに応じて変化し得る。
多層膜は、当業者に既知の技術を用いて種々の物品に形成することができる。例えば、本発明の多層膜は、いくつかの実施形態における物品に熱形成することができる。このような物品の例としては、剛性容器、可撓性トレイ、及び半可撓性放送が挙げられる。このような物品は、例えば、果実、チーズ、食肉、加工肉、加工食品、及び冷凍食品などの食品の包装において使用することができる。
温度範囲:60℃〜120℃
傾斜率:5℃/分
試験周波数:50ラジアン/秒
歪み振幅:0.05%
Claims (15)
- 多層膜であって、
ポリプロピレン、ポリエチレン、またはこれらのブレンドを含む第1の層と、
ポリプロピレン、ポリエチレン、またはこれらのブレンドを含む第2の層と、
前記第1の層と前記第2の層との間にあり、ポリプロピレン、ポリエチレン、またはこれらのブレンドを含む第3の層と、を含み、
前記層のうちの少なくとも1つが、環状オレフィンコポリマーをさらに含み、前記多層膜が、前記膜の総重量に基づき、少なくとも1重量パーセントかつ5重量パーセント未満の環状オレフィンコポリマーを含む、多層膜。 - 前記第1の層が、プロピレン/α−オレフィンコポリマー、プロピレンホモポリマー、またはこれらのブレンドを含む、請求項1に記載の多層膜。
- 前記第2の層が、プロピレン/α−オレフィンコポリマー、プロピレンホモポリマー、またはこれらのブレンドを含む、請求項1または請求項2に記載の多層膜。
- 前記第3の層が、プロピレン/α−オレフィンコポリマー、プロピレンホモポリマー、またはこれらのブレンドを含む、請求項1〜3のいずれか1項に記載の多層膜。
- 多層膜であって、
ポリエチレンを含む第1の層と、
ポリエチレンを含む第2の層と、
前記第1の層と前記第2の層との間にあり、ポリエチレンを含む第3の層と、を含み、
前記層のうちの少なくとも1つが、環状オレフィンコポリマーをさらに含み、前記多層膜が、前記膜の総重量に基づき、少なくとも1重量パーセントかつ5重量パーセント未満の環状オレフィンコポリマーを含む、多層膜。 - 少なくとも2つの層が、環状オレフィンコポリマーをさらに含む、請求項1〜5のいずれか1項に記載の多層膜。
- 前記第1の層が、前記第1の層の重量に基づき、5〜15重量パーセントの環状オレフィンコポリマーを含み、前記第2の層が、前記第2のポリマーの重量に基づき、5〜15重量パーセントの環状オレフィンコポリマーを含む、請求項1〜6のいずれか1項に記載の多層膜。
- 前記第3の層が、環状オレフィンコポリマーをさらに含む、請求項1〜7のいずれか1項に記載の多層膜。
- 前記膜が、少なくとも5つの層を含む、請求項1〜8のいずれか1項に記載の多層膜。
- 2つの最外側層が、環状オレフィンコポリマーを含む、請求項1〜9のいずれか1項に記載の多層膜。
- 前記膜が、100%の相対湿度かつ37.8℃の温度でASTM F1249により測定したとき、1.10g・ミル/m2/日以下の水蒸気透過率を呈する、請求項1〜10のいずれか1項に記載の多層膜。
- 前記膜が、100%の酸素含有量、90%の相対湿度、かつ23℃の温度でMocon Oxtran OTR試験システム(Model 2/21)を用いて、ASTM D3985に従って測定したとき、820cm3・ミル/100インチ2/日の酸素透過率を呈する、請求項1〜11のいずれか1項に記載の多層膜。
- 前記膜が、10未満の、80℃での弾性率と100℃での弾性率との比を呈する、請求項1〜12のいずれか1項に記載の多層膜。
- 前記膜が、ポリアミドを含まない、請求項1〜13のいずれか1項に記載の多層膜。
- 請求項1〜14のいずれか1項に記載の多層膜から形成された物品。
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US201562269194P | 2015-12-18 | 2015-12-18 | |
US62/269,194 | 2015-12-18 | ||
PCT/US2016/066254 WO2017106120A2 (en) | 2015-12-18 | 2016-12-13 | Multilayer films suitable for use in thermoforming applications |
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US (1) | US20200254735A1 (ja) |
EP (1) | EP3390055A2 (ja) |
JP (1) | JP2018537318A (ja) |
CN (1) | CN108367555B (ja) |
AR (1) | AR107079A1 (ja) |
BR (1) | BR112018011444B1 (ja) |
CO (1) | CO2018006961A2 (ja) |
MX (1) | MX2018006965A (ja) |
WO (1) | WO2017106120A2 (ja) |
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WO2019040574A1 (en) * | 2017-08-23 | 2019-02-28 | Dow Global Technologies Llc | COMPOSITIONS CONTAINING ETHYLENE POLYMER AND CYCLOOLEFIN INTERPOLYMER, AND FILMS FORMED THEREFROM |
ES2979248T3 (es) | 2017-09-22 | 2024-09-25 | Dow Global Technologies Llc | Composiciones de película termoconformadas con tenacidad mejorada después de los procesos de termoconformado |
CA3011030A1 (en) * | 2018-07-11 | 2020-01-11 | Nova Chemicals Corporation | Polyethylene composition and film having retained dart impact |
CA3011050A1 (en) | 2018-07-11 | 2020-01-11 | Nova Chemicals Corporation | Polyethylene composition and film having high stiffness, outstanding sealability and high permeability |
CA3011038A1 (en) * | 2018-07-11 | 2020-01-11 | Nova Chemicals Corporation | Polyethylene composition and film having a good permeability, stiffness and sealability |
CA3011031A1 (en) | 2018-07-11 | 2020-01-11 | Nova Chemicals Corporation | Polyethylene composition and film having outstanding properties |
CA3011041A1 (en) | 2018-07-11 | 2020-01-11 | Nova Chemicals Corporation | Polyethylene composition and film |
SG11202110508UA (en) | 2019-04-04 | 2021-10-28 | Amcor Flexibles North America Inc | Recyclable film for thermoforming |
CN110157074A (zh) * | 2019-05-30 | 2019-08-23 | 厦门市杏林意美包装有限公司 | 一种易撕pe膜材料及其制备方法和应用 |
ES2938408T3 (es) * | 2019-08-06 | 2023-04-10 | Dow Global Technologies Llc | Películas multicapa que comprenden polietileno y capas de barrera y métodos para producir las mismas |
US20210053734A1 (en) * | 2019-08-23 | 2021-02-25 | Sonoco Development Inc. | Polymeric wrapper |
CN114368208B (zh) * | 2022-01-28 | 2023-08-01 | 佛山市南海利达印刷包装有限公司 | 哑光薄膜及其生产方法 |
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- 2016-12-13 EP EP16867413.3A patent/EP3390055A2/en not_active Withdrawn
- 2016-12-13 BR BR112018011444-8A patent/BR112018011444B1/pt active IP Right Grant
- 2016-12-13 WO PCT/US2016/066254 patent/WO2017106120A2/en active Application Filing
- 2016-12-13 CN CN201680072061.6A patent/CN108367555B/zh active Active
- 2016-12-13 MX MX2018006965A patent/MX2018006965A/es unknown
- 2016-12-16 AR ARP160103888A patent/AR107079A1/es active IP Right Grant
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Also Published As
Publication number | Publication date |
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CN108367555A (zh) | 2018-08-03 |
MX2018006965A (es) | 2018-09-21 |
BR112018011444A2 (pt) | 2018-11-27 |
WO2017106120A2 (en) | 2017-06-22 |
EP3390055A2 (en) | 2018-10-24 |
WO2017106120A3 (en) | 2017-08-10 |
US20200254735A1 (en) | 2020-08-13 |
BR112018011444B1 (pt) | 2022-03-22 |
AR107079A1 (es) | 2018-03-21 |
CO2018006961A2 (es) | 2018-07-19 |
CN108367555B (zh) | 2023-06-13 |
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