发明授权
- 专利标题: Leather-like sheet and process for the production thereof
- 专利标题(中): 皮革样片材及其生产方法
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申请号: US09331731申请日: 1999-06-24
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公开(公告)号: US06451716B1公开(公告)日: 2002-09-17
- 发明人: Kunihiko Sasaki , Yoshiyuki Suzuki
- 申请人: Kunihiko Sasaki , Yoshiyuki Suzuki
- 优先权: JP9-307364 19971110
- 主分类号: B32B2704
- IPC分类号: B32B2704
摘要:
Provided is a leatherlike sheet material which has a base material (I) comprising a nonwoven fabric (A) constituted with ultrafine-fiber bundles having single fineness of no greater than 0.2 de, a high molecular elastomer (B) and a high molecular elastomer (C), and in which a grained surface layer (II) comprising a high molecular elastomer (C)-constituted surface porous layer (D) and a surface finishing layer (E) is formed on at least one side of the surfaces of the base material (I), wherein the leatherlike sheet material is characterized in that the apparent density of the base material (I), the weight ratio of the nonwoven fabric (A) to the high molecular weight elastomer (B) and the high molecular elastomer (C) in the base material (I), the thickness of the grained surface layer (II), and the ratios of 20%-elongation load (&sgr;20)/5%-elongation load (&sgr;5) in the longitudinal direction and the transverse direction of the leatherlike sheet material satisfy their own specific ranges.
公开/授权文献
- US20020098756A1 LEATHERLIKE SHEET MATERIAL AND METHOD FOR PRODUCING SAME 公开/授权日:2002-07-25