公开(公告)号：US20230227227A1

公开(公告)日：2023-07-20

申请号：US18125488

申请日：2023-03-23

Applicant: TOPPAN INC.

Inventor： Shukiko IMAIZUMI ,  Kazuyoshi RO

IPC: B65D65/40 ,  B32B7/12 ,  B32B27/32 ,  B32B27/08 ,  B65D75/00 ,  B65D75/58

CPC classification number: B65D65/40 ,  B32B7/12 ,  B32B27/32 ,  B32B27/322 ,  B32B27/08 ,  B65D75/008 ,  B65D75/58 ,  B32B2255/10 ,  B32B2255/26 ,  B32B2255/28 ,  B32B2439/06 ,  B32B2307/546 ,  B32B2307/5825 ,  B32B2250/242 ,  B32B2270/00 ,  B32B2307/516 ,  B65D2207/00 ,  B65D2565/385

Abstract: A laminate includes a substrate layer and a heat-sealing layer. A fold of the laminate produced by a weight of a 2 kg roller has a folding angle of 20 to 55°, and a content of polyethylene in the laminate is 90% by mass or more. The folding angle may be 25 to 55°. The substrate layer may contain high-density polyethylene. The substrate layer may be a uniaxially oriented linear low-density polyethylene film or an unstretched film made of polyethylene.

公开(公告)号：US20240042745A1

公开(公告)日：2024-02-08

申请号：US18258850

申请日：2021-12-23

Applicant: TOPPAN INC. ,  TAMAPOLY CO., LTD.

Inventor： Kazuyoshi RO ,  Akinori SAKURAI

IPC: B32B27/08 ,  B32B27/32 ,  B32B7/02 ,  B32B7/12 ,  B65D65/40 ,  B65D75/00 ,  B32B27/40

CPC classification number: B32B27/08 ,  B32B27/32 ,  B32B7/02 ,  B32B7/12 ,  B65D65/40 ,  B65D75/008 ,  B32B27/40 ,  B32B2307/7376 ,  B32B2250/24 ,  B32B2439/46 ,  B32B2270/00 ,  B32B2307/748

Abstract: A laminate including, a base material layer; a first polyethylene resin layer containing a first polyethylene resin and having a melt flow rate of less than 5 g/10 minutes, and a second polyethylene resin layer containing a second polyethylene resin and having a melt flow rate of 5 to 12 g/10 minutes, in this order, in which a ratio R2 (Mw/Mn) of a weight-average molecular weight Mw to a number average molecular weight Mn of the second polyethylene resin is 7 or less.