Title:
【発明の名称】多層熱可塑性構造
Document Type and Number:
Japanese Patent JP2002540992
Kind Code:
A
Abstract:
Multilayer structure based on thermoplastic polymers which is substantially devoid of vinyl chloride polymers and of plasticizers of low molecular mass and which comprises at least 3 layers:a first layer (A) comprising at least 60% by weight of at least one polyolefin of controllable crystallinity defined as comprising at least 90% of ethylene, of propylene or of butene and as having a softening temperature of less than 121° C., the thickness of the first layer being at least 20% of the total thickness of the structure and the first layer having a modulus of elasticity of less than 350 MPa;a second layer (B), positioned between the first layer (A) and the third layer (C), comprising at least 40% by weight of at least one polyolefin of controllable crystallinity, the second layer having an overall softening temperature of less than 121° C.;a third layer (C) comprising at least 50% by weight of at least one polyolefin of controllable crystallinity, the thickness of the third layer being from 5 to 30% of the total thickness of the structure and the third layer having a modulus of elasticity which is less than that of the first layer.
Inventors:
Karsten Petrius Yehr
Application Number:
JP2000610396A
Publication Date:
December 03, 2002
Filing Date:
March 29, 2000
Export Citation:
Assignee:
Solvay
International Classes:
A61J1/10; B32B27/08; B32B27/32; B65D30/02; B32B7/022; B65D30/22; B65D81/32; B65D65/40; A61J1/00; A61J1/05; (IPC1-7): B32B27/32; A61J1/10; B65D30/02; B65D30/22; B65D65/40; B65D81/32
Attorney, Agent or Firm:
Minoru Nakamura (9 outside)