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:
Apr. 15, 2003
Filed:
Dec. 20, 1996
Andreas Winter, Glashütten, DE;
Ernst Hofmann, Haibach, DE;
Gerhard Wieners, Frankfurt, DE;
Bernd Bachmann, Eppstein, DE;
Basell Polyolefine GmbH, , DE;
Abstract
The present invention relates to single- or multilayer films and one or more layers comprising at least one polyolefin molding composition containing at least one polyolefin derived from at least one olefin having at least 2 carbon atoms, of the formula R —CH═CH—R , in which R and R are identical or different and are a hydrogen atom or a straight-chain or branched C -C -alkyl radical, or R and R , together with the atoms connecting them, form a ring or ring system, and the polyolefin has been prepared by means of metallocene catalysts. The present invention furthermore relates to a process for the production of films and layers in which a polyolefin molding composition having a particle size of from 20 &mgr;m to 5000 &mgr;m is used or prepared. The shaped polyolefin molding composition is melt-mixed with at least one additive and shaped. The melt-mixed and shaped material is melted at a temperature of from 150° C. to 300° C. The molten material is cooled and at the same time shaped to give a film or layer. Finally, the present invention also relates to the use of films and layers for the production of articles such as bags, composite materials and laminates.