Foamed resin layer and synthetic leather
AssigneesHonda Motor Co., Ltd., Triple A Co., Ltd.
InventorsTomoyuki UEMURA, Susumu TAKAHASHI, Shohei KOYAMA
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Abstract
A synthetic leather is lightweight and highly durable to abrasion, and a foamed resin layer can give the synthetic leather. The foamed resin layer includes a poly(vinyl chloride) resin and a thermoplastic polyurethane elastomer. The thermoplastic polyurethane elastomer preferably has a Shore A hardness of 50 to 80. The foamed resin layer preferably has an apparent density of 0.3 to 0.7 g/cm3. The foamed resin layer preferably has an average cell size of 50 to 250 μm.
Claims20
A foamed resin layer comprising:
- a poly(vinyl chloride) resin;
- and
- a thermoplastic polyurethane elastomer.
A synthetic leather including a laminate comprising, in the sequence set forth:
- a fibrous substrate layer;
- a foamed resin layer;
- and
- a surface-protective layer,
- the surface-protective layer defining an outermost surface of the laminate,
- the fibrous substrate layer and the surface-protective layer defining both end faces of the laminate,
- the laminate having a mass per unit area of 300 to 500 g/m2 and a thickness of 1.0 to 1.3 mm,
- in the laminate, a layer lying immediately below the surface-protective layer remaining unexposed when the laminate receiving a rubbing test on the surface-protective layer side, where the rubbing test is performed under a load of 1 kg with 30000 reciprocating rubbings as a test for color fastness to rubbing prescribed in Japanese Industrial Standards (JIS) L0849,
- the laminate having a BLC softness of 4.0 to 6.0.
Dependencies are inferred from the claim text.