Plastic articles

• US 6,391,972 B1
• Filed: 09/16/1999
• Issued: 05/21/2002
• Est. Priority Date: 04/22/1998
• Status: Expired due to Term

• Current Assignee: Heiwa Kagaku Kogyosho Co., Ltd.
• Original Assignee: Heiwa Kagaku Kogyosho Co., Ltd.
• Inventors: Hatakeyama, Kazuyuki
• Primary Examiner(s): Nutter, Nathan M.
• Application Number:
  US09/397,108
• Time in Patent Office: 978 Days
• Field of Search: 525/227, 525/240, 525/241, 525/191, 525/236, 428/34.7, 428/36.8, 428/515, 428/516, 428/517, 428/518, 428/519
• US Class Current: 525/191
• CPC Class Codes: B32B 27/08 of synthetic resin
• CPC Class Codes: B32B 27/32 comprising polyolefins comprising vinyl (co)polymers or acrylic (co)polymers B32B27/30
• CPC Class Codes: C08L 2666/04 Macromolecular compounds according to groups C08L7/00 - C08L49/00, or C08L55/00 - C08L57/00; Derivatives thereof
• CPC Class Codes: C08L 53/02 of vinyl-aromatic monomers and conjugated dienes
• CPC Class Codes: Y10T 428/1321 Polymer or resin containing [i.e., natural or synthetic]
• CPC Class Codes: Y10T 428/1386 Natural or synthetic rubber or rubber-like compound containing
• CPC Class Codes: Y10T 428/31909 Next to second addition polymer from unsaturated monomers
• CPC Class Codes: Y10T 428/31913 Monoolefin polymer
• CPC Class Codes: Y10T 428/31917 Next to polyene polymer
• CPC Class Codes: Y10T 428/3192 Next to vinyl or vinylidene chloride polymer
• CPC Class Codes: Y10T 428/31924 Including polyene monomers

Abstract

It is an object of the present invention to provide a plastic article having moist touch, which differs from the smooth touch peculiar to the conventional plastic articles.

A plastic article is characterized in that the surface of the article is at least partially constituted from a styrenic thermoplastic elastomer, an olefinic thermoplastic elastomer, a blend of a styrenic thermoplastic elastomer and a polyolefin, or a blend of an olefinic thermoplastic elastomer and a polyolefin.

Claims

1. A molded plastic container for packaging comprising an external layer and an internal layer, wherein:

the external layer consists essentially of a polystyrene-polybutadiene-polystyrene thermoplastic elastomer, an olefinic thermoplastic elastomer or a blend of a polystyrene-polybutadiene-polystyrene thermoplastic elastomer and a polyolefin;

the external layer has a thickness of from 100 μ

m to 600 μ

m;

the internal layer consists essentially of a polyethylene, a polypropylene or a polyethylene-propylene; and

the container has a predetermined size.

2. The molded plastic container for packaging of claim 1, wherein the external layer consists essentially of a blend of a polystyrene-polybutadiene-polystyrene thermoplastic elastomer and a polyolefin.

3. The molded plastic container for packaging of claim 2, wherein the external layer consists essentially of a blend of 1 to 3 parts by weight of a polystyrene-polybutadiene-polystyrene thermoplastic elastomer and one part by weight of a polyolefin.

4. The molded plastic container for packaging of claim 3, wherein the external layer consists essentially of a blend of 1 to 3 parts by weight of a polystyrene-polybutadiene-polystyrene thermoplastic elastomer and one part by weight of a polypropylene.

5. The molded plastic container for packaging of claim 1, wherein the external layer consists essentially of a polystyrene-polybutadiene-polystyrene thermoplastic elastomer.

6. The molded plastic container for packaging of claim 1, wherein the internal layer consists essentially of a polyethylene.

7. The molded plastic container for packaging of claim 1, wherein the