公开(公告)号：US20170121570A1

公开(公告)日：2017-05-04

申请号：US15318479

申请日：2014-06-18

Applicant: LINTEC CORPORATION

Inventor： Naoki TAYA ,  Yuki NITO ,  Yusuke MIYATAKE

IPC: C09J7/02 ,  B32B7/12 ,  H01L21/683 ,  B32B27/06

CPC classification number: B32B27/06 ,  B32B7/02 ,  B32B7/12 ,  B32B27/08 ,  B32B27/281 ,  B32B27/302 ,  B32B27/304 ,  B32B27/306 ,  B32B27/308 ,  B32B27/32 ,  B32B27/327 ,  B32B27/36 ,  B32B27/365 ,  B32B27/40 ,  B32B2250/02 ,  B32B2250/03 ,  B32B2250/04 ,  B32B2250/246 ,  B32B2255/10 ,  B32B2255/26 ,  B32B2270/00 ,  B32B2307/54 ,  B32B2307/58 ,  B32B2457/14 ,  C08L23/0869 ,  C09J7/29 ,  C09J2201/122 ,  C09J2201/162 ,  C09J2201/606 ,  C09J2201/622 ,  C09J2203/326 ,  C09J2205/114 ,  C09J2421/006 ,  C09J2423/006 ,  C09J2423/046 ,  C09J2423/106 ,  C09J2429/006 ,  C09J2431/006 ,  C09J2433/00 ,  C09J2433/006 ,  H01L21/6836 ,  H01L2221/68327 ,  C08L23/12

Abstract: A base film for dicing sheets includes the base film and a pressure sensitive adhesive layer laminated on one surface of the base film. The base film includes a first resin layer that is in contact with the pressure sensitive adhesive layer of the dicing sheet and a second resin layer that comes into contact with the first resin layer when the base film is wound up. The second resin layer has a crystallinity of 28% to 45% The ratio of a tensile elastic modulus of the first resin layer to a tensile elastic modulus of the second resin layer is 1.2 to 3.0. The ratio of a thickness of the first resin layer to a thickness of the base film is 20% to 60%.

公开(公告)号：US20170036431A1

公开(公告)日：2017-02-09

申请号：US15125624

申请日：2015-03-11

Applicant: LINTEC CORPORATION

Inventor： Junichi NAKAMURA ,  Yusuke MIYATAKE ,  Naoki TAYA ,  Takeshi KONDO

IPC: B32B27/32 ,  B32B27/08 ,  C09J7/02 ,  B32B7/12

CPC classification number: B32B27/32 ,  B32B7/12 ,  B32B27/08 ,  B32B27/325 ,  B32B2270/00 ,  B32B2274/00 ,  B32B2307/51 ,  B32B2307/54 ,  B32B2457/14 ,  C09J7/29 ,  C09J2201/162 ,  C09J2203/326 ,  C09J2421/006 ,  C09J2423/006 ,  C09J2423/046 ,  C09J2423/106

Abstract: Base film for a dicing sheet comprises a cutting-fragment suppression layer and an expandable layer laminated on one main surface of the cutting-fragment suppression layer. The expandable layer comprises at least one resin-based unit layer. The at least one resin-based unit layer includes a resin-based unit layer that is disposed nearest to the cutting-fragment suppression layer. The resin-based unit layer comprises a linear polyethylene, polypropylene, and thermoplastic elastomer. The cutting-fragment suppression layer comprises a ring-containing resin that is a thermoplastic resin having at least one type of an aromatic series-based ring and an aliphatic series-based ring and an acyclic olefin-based resin that is an olefin-based thermoplastic resin other than the ring-containing resin. The base film for such a dicing sheet is excellent in the expandability and recoverability.

Abstract translation: 用于切割片的基底膜包括层压在切割片段抑制层的一个主表面上的切割片段抑制层和可扩展层。 可膨胀层包括至少一个基于树脂的单元层。 至少一个基于树脂的单元层包括最靠近切割片断抑制层设置的基于树脂的单元层。 树脂基单元层包含线性聚乙烯，聚丙烯和热塑性弹性体。 切割片抑制层包括含有环氧树脂，其为具有至少一种芳族系列基环和脂族系列基环的热塑性树脂和作为烯烃类热塑性塑料的非环状烯烃类树脂 除含环树脂以外的树脂。 用于这种切割片的基膜具有优异的可扩展性和可恢复性。

公开(公告)号：US20170121569A1

公开(公告)日：2017-05-04

申请号：US15318383

申请日：2014-06-18

Applicant: LINTEC CORPORATION

Inventor： Naoki TAYA ,  Yuki NITO ,  Yusuke MIYATAKE

IPC: C09J7/02 ,  B32B7/12 ,  H01L21/683 ,  B32B27/06

CPC classification number: H01L21/6836 ,  B32B7/12 ,  B32B27/06 ,  B32B27/308 ,  B32B27/32 ,  B32B2307/54 ,  C08L23/0869 ,  C09J7/29 ,  C09J2201/122 ,  C09J2201/162 ,  C09J2201/606 ,  C09J2201/622 ,  C09J2203/326 ,  C09J2205/114 ,  C09J2421/006 ,  C09J2423/006 ,  C09J2423/046 ,  C09J2423/106 ,  C09J2429/006 ,  C09J2431/006 ,  C09J2433/00 ,  C09J2433/006 ,  H01L21/6835 ,  H01L2221/68327 ,  C08L23/12

Abstract: A base film for dicing sheets that is used in a dicing sheet comprising the base film and a pressure sensitive adhesive layer laminated on one surface of the base film. The base film comprises at least a first resin layer that is in contact with the pressure sensitive adhesive layer of the dicing sheet and a second resin layer that comes into contact with the first resin layer when the base film for dicing sheets is wound up. The second resin layer has a crystallinity of 28% to 45%, The ratio of a tensile elastic modulus of the first resin layer to a tensile elastic modulus of the second resin layer is 1.2 to 3.0. The ratio of a thickness of the first resin layer to a thickness of the base film for dicing sheets is 25% to 80%.