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:
Nov. 26, 2019
Filed:
Dec. 02, 2015
Sabic Global Technologies B.v., Bergen op Zoom, NL;
Carmela Tufano, Maastricht, NL;
Willy Joseph Dijsselbloem, Overpelt, BE;
Stefan Gielen, Genk, BE;
Gerard Jan Eduard Biemond, Brunssum, NL;
Johannes Henricus Theodorus Daalmans, Kerkrade, NL;
SABIC GLOBAL TECHNOLOGIES B.V., Bergen op Zoom, NL;
Abstract
The present invention relates to a process for the manufacture of a long glass fibre reinforced polypropylene composition. The process comprises: a) providing at least one continuous glass multifibre strand, b) applying a sheath of a polypropylene composition around said continuous glass multifibre strand so as to form a sheathed continuous glass multifibre strand, c) cooling the sheathed continuous glass multifibre strand to a cutting temperature, d) cutting the sheathed continuous glass multifibre strand into pellets using a rotary cutting tool at a cutting temperature that satisfies the following equations I, II and III_max=−0.625×GF+112.5  (I)T_min=10  (II)T_min≤T_cut≤T_max  (III)wherein: T_cut is the cutting temperature, T_max is the maximum cutting temperature [° C.], T_min is the minimum cutting temperature [° C.], and GF is the amount of glass fibres based on the weight of the composition [wt. %].