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公开(公告)号:EP2628690A4
公开(公告)日:2016-08-03
申请号:EP11832315
申请日:2011-04-18
申请人: DENKA COMPANY LTD
CPC分类号: B65D43/02 , B32B7/02 , B32B7/06 , B32B7/12 , B32B27/08 , B32B27/20 , B32B27/302 , B32B27/308 , B32B27/32 , B32B27/327 , B32B27/34 , B32B27/36 , B32B2250/24 , B32B2255/10 , B32B2255/26 , B32B2255/28 , B32B2307/202 , B32B2307/21 , B32B2307/31 , B32B2307/518 , B32B2307/54 , B32B2307/748 , B32B2457/00 , B32B2457/08 , B32B2553/00 , Y10T428/2826
摘要: Disclosed is a cover film which is used in combination with a carrier tape and comprises at least a base layer (A), an intermediate layer (B), a releasing layer (C) and a heat seal layer (D) that is capable of being heat sealed to the carrier tape. The intermediate layer (B) contains, as a main component, a linear low density polyethylene that is polymerized using a metallocene catalyst and has a tensile modulus of 200 MPa or less. The releasing layer (C) contains a conductive material and also contains, as a main component, a hydrogenated resin of an aromatic vinyl-conjugated diene copolymer having an aromatic vinyl group content of 15-35% by mass. This cover film is small in variation in peel strength when the cover film is released, and is thus capable of suppressing troubles during the releasing in a mounting process.
摘要翻译: 公开了一种覆盖膜,其与载带组合使用,并且至少包括基层(A),中间层(B),脱模层(C)和热封层(D) 被热密封到载带上。 中间层(B)作为主要成分含有使用茂金属催化剂聚合并且拉伸弹性模量为200MPa以下的直链状低密度聚乙烯。 释放层(C)含有导电材料,并且还含有芳香族乙烯基含量为15〜35质量%的芳族乙烯基 - 共轭二烯共聚物的氢化树脂作为主要成分。 当覆盖膜被释放时,该覆盖膜的剥离强度的变化小,因此能够抑制在安装过程中的释放期间的麻烦。