Patent · US Active

Process for production of polyethylene terephthalate pellets

US8557155B2 · kind B2 · utility

48Cited by

2References

12Claims

0Family size

Assignee

Automatik Plastics Machinery GmbH · DE

Inventors

Stefan Deiss · Harxheim, DE
Frank Gloeckner · Aschaffenburg, DE
Horst Mueller · Rio Rancho, US

Key dates

Filing date	Aug 8, 2012
Grant date	Oct 15, 2013
Priority date	—
Expiry date	Aug 8, 2032

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29B9/16
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A process for production of polyethylene terephthalate pellets includes the steps of: production of a melt of polyethylene terephthalate material; production of polyethylene terephthalate pellets from the melt by means of underwater pelletization into a process fluid; removal of the polyethylene terephthalate pellets from the site of underwater pelletization in the process fluid; crystallization of the polyethylene terephthalate pellets in the process fluid, wherein a surface of the polyethylene terephthalate pellets is crystallized and an interior of the polyethylene terephthalate pellets remains amorphous.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.