Patent · US Active

Method for producing hollow bodies made of plastics

US11801628B2 · kind B2 · utility

0Cited by

2References

19Claims

0Family size

Assignee

Kautex Textron GmbH & Co. KG · DE

Inventors

Thomas Mayer · Glenmoore, US
Jochen Hild · Bonn, DE
Verena Thimm · Eitorf, DE

Key dates

Filing date	Sep 21, 2018
Grant date	Oct 31, 2023
Priority date	—
Expiry date	Aug 6, 2039

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29L2022/00
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A method for producing hollow bodies made of plastics by blow molding or deep drawing using a deep-drawing tool or a blow-molding tool, comprising the extrusion of preforms from thermoplastics, the method comprising a wall thickness control of the preforms, wherein a measurement of the wall thickness of the preforms takes place within the tool on the mold cavity side on at least one reference point of a preform, the measured value obtained is compared as an actual value with a predetermined target value and the wall thickness control is triggered to change the wall thickness of the preform during extrusion or between extrusion cycles depending on the deviation between the actual value and the target value.

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