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1. 发明公开

CN109362225A 多层膜、包含所述多层膜的制品、制造多层膜的方法有权
公开(公告)号：CN109362225A
公开(公告)日：2019-02-19
申请号：CN201780036560.4
申请日：2017-06-28
申请人：陶氏环球技术有限责任公司
发明人：林倚剑 , 黄文艺 , S·本萨松
IPC分类号： B32B7/02 , B32B27/08 , B32B27/20 , B32B27/28 , B32B27/30 , B32B27/32 , B32B27/34 , B65D65/40
CPC分类号： B32B27/08 , B32B7/02 , B32B7/035 , B32B27/20 , B32B27/285 , B32B27/306 , B32B27/32 , B32B27/34 , B32B38/0012 , B32B2038/0028 , B32B2250/05 , B32B2250/40 , B32B2264/104 , B32B2270/00 , B32B2274/00 , B32B2307/516 , B32B2307/724 , B32B2439/40 , B32B2439/70 , B65D65/40
摘要：本发明提供多层膜、由这类膜形成的包装，以及制作多层膜的方法。在一个方面，多层膜包含包括至少3层的多层膜，每层具有相对的面部表面并且以A/B/C的顺序排列，其中层A包含高密度聚乙烯，所述高密度聚乙烯具有至少6.0的Mw,cc/Mn,cc、如通过三重检测器GPC测量的至少500,000克/摩尔的Mz,abs以及0.957至0.970g/cm3的密度，其中所述高密度聚乙烯占层A的至少90重量％；层B包含气体渗透层，其中层B的顶部面部表面与层A的底部面部表面粘附接触；并且层C包含高密度聚乙烯，所述高密度聚乙烯具有至少6.0的Mw,cc/Mn,cc、如通过三重检测器GPC测量的至少500,000克/摩尔的Mz,abs以及0.957至0.970g/cm3的密度，其中所述高密度聚乙烯占层C的至少90重量％，并且其中层C的顶部面部表面与层B的底部面部表面粘附接触，其中所述膜在机器方向上取向，并且其中当根据ASTM F-2476在23℃、0％相对湿度和1atm下测量时，所述膜显示出至少3000厘米3·密耳/100英寸2/天的归一化二氧化碳透过率，并且其中当根据ASTM D3985在23℃、0％相对湿度和1atm下测量氧气透过率时，所述膜显示出至少4.0的所述二氧化碳透过率与氧气透过率的比率。

2. 发明申请

US20190202185A1 EXTRUDED PRE-STRETCHED POLYETHYLENE FILMS 审中-公开
公开(公告)号：US20190202185A1
公开(公告)日：2019-07-04
申请号：US16237019
申请日：2018-12-31
申请人： Inteplast Group Corporation
发明人： Jyh-Yao Raphael Li , Kelvin Yang , Nancy (Lan-Shin) Cheng
IPC分类号： B32B27/32 , B32B7/035 , C08L23/06 , B29C48/00
CPC分类号： B32B27/32 , B29C48/022 , B29K2023/06 , B32B7/035 , B32B2553/00 , C08K3/013 , C08L23/06
摘要： A method of making a pre-stretched plastic packaging film comprising co-extruding a top layer, a bottom layer, and a core layer into a multilayer film intermediate product, wherein the top layer and bottom layer comprise at least about 95 wt % polyethylene resin, and the core layer comprises polyethylene resin and filler particles; stretching the multilayer film intermediate product to impart cavitation in the core layer in the area of the filler particles to form a pre-stretched polyethylene-based film; and rolling the pre-stretched polyethylene-based film onto a roller to form a roll of pre-stretched polyethylene-based film. A multilayer pre-stretched plastic packaging film comprising: a core layer sandwiched between a top layer and a bottom layer wherein the top layer and bottom layer comprise at least about 95 wt % polyethylene, and the core layer comprises filler particles having a particle size of 0.1 to 20 μm in a polyethylene-based matrix comprising at least about 95 wt % polyethylene.

3. 发明申请

WO2018005577A1 MULTILAYER FILMS, ARTICLES COMPRISING THE SAME, METHODS OF MANUFACTURING MULTILAYER FILMS 审中-公开
标题翻译：多层膜，包含其的制品，制造多层膜的方法
公开(公告)号：WO2018005577A1
公开(公告)日：2018-01-04
申请号：PCT/US2017/039619
申请日：2017-06-28
申请人： DOW GLOBAL TECHNOLOGIES LLC
发明人： LIN, Yijian , HUANG, Wenyi , BENSASON, Selim
IPC分类号： B32B7/02 , B32B27/08 , B32B27/20 , B32B27/28 , B32B27/30 , B32B27/32 , B32B27/34 , B65D65/40
CPC分类号： B32B27/08 , B32B7/02 , B32B7/035 , B32B27/20 , B32B27/285 , B32B27/306 , B32B27/32 , B32B27/34 , B32B38/0012 , B32B2038/0028 , B32B2250/05 , B32B2250/40 , B32B2264/104 , B32B2270/00 , B32B2274/00 , B32B2307/516 , B32B2307/724 , B32B2439/40 , B32B2439/70 , B65D65/40
摘要： The present invention provides multilayer films, packages formed from such films, and methods of making multilayer films. In one aspect, a multilayer film comprises multilayer film comprising at least 3 layers, each layer having opposing facial surfaces and arranged in the order A/B/C, wherein Layer A comprises a high density polyethylene having a M w,cc /M n,cc of at least 6.0, a M z,abs of at least 500,000 grams/mol as measured by triple detector GPC, and a density of 0.957 - 0.970 g/cm 3 , wherein the high density polyethylene comprises at least 90 percent by weight of Layer A; Layer B comprises a gas permeation layer, wherein a top facial surface of Layer B is in adhering contact with a bottom facial surface of Layer A; and Layer C comprises a high density polyethylene having a M w,cc /M n,cc of at least 6.0, a M z,abs of at least 500,000 grams/mol as measured by triple detector GPC, and a density of 0.957 - 0.970 g/cm 3 , wherein the high density polyethylene comprises at least 90 percent by weight of Layer C and wherein a top facial surface of Layer C is in adhering contact with a bottom facial surface of Layer B, wherein the film is oriented in the machine direction and wherein the film exhibits a normalized carbon dioxide transmission rate of at least 3000 cm 3 •mil/100 in 2 /day when measured according to ASTM F-2476 at 23 °C, 0% relative humidity, and 1 atm, and wherein the film exhibits a ratio of the carbon dioxide transmission rate to an oxygen transmission rate of at least 4.0, when the oxygen transmission rate is measured according to ASTM D3985 at 23 °C, 0% relative humidity, and 1 atm.
摘要翻译：本发明提供了多层膜，由这种膜形成的包装以及制造多层膜的方法。在一个方面，多层膜包含多层膜，其包含至少3层，每层具有相对的面部表面并按A / B / C的顺序排列，其中层A包含具有M w，cc的高密度聚乙烯通过三重检测器GPC测得的至少6.0，至少500,000克/摩尔的M z，abs，和密度为0.957-0.970克/厘米3，其中高密度聚乙烯包含至少90重量％的层A; 层B包括气体渗透层，其中层B的顶部面部表面与层A的底部面部表面粘附接触; 并且层C包含M w，cc / M n，cc为至少6.0的高密度聚乙烯，M z，abs，通过三重检测器GPC测量为至少500,000克/摩尔，密度为0.957-0.970克/厘米3，其中高密度聚乙烯包含至少90重量％的层C，并且其中层C的顶部面部表面与层B的底部面部表面粘附接触，其中所述膜沿机器方向取向并且其中所述膜显示出至少3000cm 3的归一化二氧化碳透过率，当按照ASTM F-2476在23℃，0％相对湿度和1大气压下测量时，所述薄膜显示出的比率为100m 2/100英寸2 /天当在23℃，0％相对湿度和1个大气压下根据ASTM D3985测量氧气透过速率时，将二氧化碳透过率调节至至少4.0的透氧率。

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