Multilayer molded article
AssigneesSumitomo Chemical Company, Limited, Suiryo Plastics Co., Ltd.
InventorsTakahisa Hara, Masahito Matsumoto, Hitoshi Nakada
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Abstract
A multilayer molded article is produced using a composite skin layer made of a skin material and a foam sheet on a core layer of a thermoplastic resin in which a tensile modulus E of the skin material is not larger than 950 kg/cm2, and a tensile modulus E (kg/cm2), a heat shrinkage factor F (%) and a thickness t (cm) of the skin material satisfy the following relationship: 20/(E×t)+F≧2.5, which method produces a large size multilayer molded article having a complicated shape and no wrinkles, breakage or uneven marks in the skin material on the surface of the article.
Claims4
A multilayer molded article comprising:
- a thermoplastic resin layer;
- and
- a composite skin layer, disposed on said thermoplastic resin layer, having a skin material and a foam sheet, characterized in that a tensile modulus E of said skin material of the composite skin layer is not larger than 950 kg/cm2, and a tensile modulus E (kg/cm2), a heat shrinkage factor F (%) and a thickness t (cm) of said skin material which satisfy the following relationship:
- 20/(E×t)+F≧2.5;
- and
- laminating said preformed composite skin layer on a core layer of a thermoplastic resin for producing the multilayered molded article.
Dependencies are inferred from the claim text.