Patent · US Active

Die head and process to manufacture multilayer tubular film

US11654605B2 · kind B2 · utility

2Cited by

48References

16Claims

0Family size

Assignee

HOSOKAWA ALPINE Aktiengesellschaft · DE

Inventors

Christian Baier · Alzenau, DE
Felix Grimm · Königsee, DE
Michael Heinecker · Augsburg, DE
Joachim Libowski · Gersthofen, DE

Key dates

Filing date	Oct 11, 2019
Grant date	May 23, 2023
Priority date	—
Expiry date	May 27, 2040

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29C48/3001
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

In the case of a die head and a process to produce multilayer tubular film made from thermoplastic polymers, the advantages of radial distributors and axial distributors should be combined. This is achieved in that at least one distributor is a plate distributor and at least one distributor is an axial distributor, whereby the plate distributor is located in an annular element of the axial distributor upstream of the melt merge zone to the ring-shaped die.

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