The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 19, 1997
Filed:
Feb. 01, 1995
Idemitsu Petrochemical Co., Ltd., Tokyo, JP;
Abstract
A method for producing a thermoplastic resin sheet or film, wherein a raw resin material containing one or more of the following additives: a nucleating agent, fine powder of a high melting point polymer, a petroleum resin, a terpene resin and an organic peroxide (and/or a crystalline polypropylenic copolymer) is melted under heat to form a resin sheet or film, the resulting resin sheet or film is brought into contact with and adhered to the outer surface of a cooling roll having a mirror-finished surface or the outer surface of an endless metal belt having a mirror-finished surface and then it is moved along with the roll or the belt, thereafter it is inserted, pressed and cooled between the outer surface of the cooling roll and the outer surface of the endless metal belt. The non-oriented sheet or film thus produced has a high surface gloss, a high surface smoothness and a high transparency and is suitable for wrapping foods and medicines.