Patent · US Active

Method and system for making a plastic film

US11305474B2 · kind B2 · utility

0Cited by

5References

11Claims

0Family size

Assignee

REIFENHÄUSER GMBH & CO. KG MASCHINENFABRIK · DE

Inventors

Jens Mager · Cologne, DE
Andreas Roesner · Bonn, DE
Christian Stelter · Ingelheim am Rhein, DE
Asmir Vodencarevic · Erlangen, DE
Thomas Fett · Troisdorf, DE
Mark Hilgers · Troisdorf, DE
Christoph Lettowsky · Aachen, DE

Key dates

Filing date	Oct 18, 2017
Grant date	Apr 19, 2022
Priority date	—
Expiry date	Feb 19, 2038

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29L2023/00
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A plastic film of a thermoplastic synthetic resin is made in a film-making system by extrusion from a die of an extruder. First the plastic is melted and extruded from the die as a tube or web that is, typically after cooling and stretching, formed into a package. At least one reference parameter is provided, and, during continuous operation of the system, two input parameters different from the reference parameter are measured by respective measuring devices An output is determined from these reference parameters and is compared with the reference parameter.

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