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Laminated film comprising ethylene copolymer

一种共聚物、乙烯的技术，应用在分层产品、金属层状产品、合成树脂层状产品等方向，能够解决层压体生产速度低、高温度、长层压时间等问题，达到良好光学性能、少废弃材料、改善挤出性能的效果

Active Publication Date: 2018-11-09
BOREALIS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] A disadvantage of peroxide-crosslinked EVA as a layer in a laminate is the relatively high temperature and relatively long lamination time due to the need to decompose the organic peroxide in the laminate and to achieve the crosslinking reaction
Therefore, the production speed of the laminate is low
[0007] The use of peroxide-crosslinked EVA as the polymer layer has other disadvantages

Method used

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  • Laminated film comprising ethylene copolymer
  • Laminated film comprising ethylene copolymer
  • Laminated film comprising ethylene copolymer

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Embodiment Construction

[0026] In one embodiment of the invention, the amount of the copolymer (A) of ethylene with units containing silane groups is from 10 to 45% by weight, suitably from 25 to 45% by weight, based on the total weight of the polymer composition, Most suitably it is 30 to 40% by weight. This amount should be well balanced to obtain good creep properties, optimize adhesion while maintaining good optical properties. Furthermore, the copolymer (A) of ethylene with units containing silane groups suitably has a mass of more than 910 kg / m 3 , more suitably higher than 920kg / m 3 density of. If the density is too low, the creep will be too high. Copolymers (A) of ethylene and units containing silane groups suitably have a mass of less than 960 kg / m 3 , more suitably with less than 930kg / m 3 density of.

[0027] The copolymer (A) of ethylene and units containing silane groups suitably has an MFR of 0.1 to 40 g / 10 min, preferably of 0.5 to 15 g / 10 min, most preferably of 0.75 to 4 g / 10 ...

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Abstract

The invention is a polymer composition for film layer comprising less than 50 wt% of a copolymer of ethylene with silane group(s) containing units and at least 50 wt% of a thermoplastic polyolefine free from silane group(s) wherein the polymer composition has creep of less than l mm at 90 DC, and an adhesion above 20 N / cm. The invention relates to a laminated article with at least one film layer of the polymer composition and a substrate.

Description

technical field [0001] The present invention relates to polymer compositions for film layers of laminates. [0002] The invention also relates to film layers made of polymer compositions, laminates comprising layers of polymer compositions, and methods for the preparation of such laminates. Background technique [0003] There are various laminates. A laminate generally comprises at least one substrate layer, such as a glass layer or a metal layer, and at least one layer made of a polymer. [0004] A common prior art polymer composition is a peroxide crosslinked ethylene-vinyl acetate (EVA) copolymer consisting of an organic peroxide as a crosslinking agent and a stabilizer The EVA copolymer composition was extruded into sheets. Crosslinking of EVA is necessary to provide a layer with sufficient strength at higher temperatures, as in use the temperature is typically 40°C to 80°C. [0005] Laminated film layers are usually produced in a vacuum lamination process. In this ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08
CPCC08L23/08C08L2203/16B32B27/00B32B2307/548B32B7/04B32B15/08B32B15/082B32B15/085B32B27/06B32B27/18B32B27/28B32B27/306B32B27/308B32B27/32B32B27/327B32B2250/02B32B2270/00B32B2274/00B32B2307/30B32B2307/40B32B2307/51B32B2307/748C08L23/0892B32B17/10678B32B17/10697B32B2323/046C08F30/08C08F2500/21C08F2500/08
Inventor 杰伦·奥德尔柯克贝尔特·博若德斯伯恩特-阿克·苏丹吉里什·苏雷什·加尔加利斯蒂芬·赫尔斯特罗姆马蒂亚斯·布尔奎斯特巴特·维尔赫尤利克里斯蒂娜·阿库于兹-卡尔松乌尔班·安德森弗朗西斯·科斯塔安·团·特兰
Owner BOREALIS AG
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