Patent · US Active

Polymer coextrusion head with a dual-channel nozzle

US11541585B2 · kind B2 · utility

0Cited by

3References

6Claims

0Family size

Assignees

Polytex Sportbeläge Produktions-GmbH · DE
Sima S.R.L. · IT

Inventors

Stephan SICK · Willich, DE
Dirk SANDER · Kerken, DE
Ivo LOHR · Kempen, DE
Andrea Zucconi · Sasso Marconi, IT

Key dates

Filing date	Nov 2, 2018
Grant date	Jan 3, 2023
Priority date	—
Expiry date	May 31, 2039

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB29C48/3003
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A coextrusion head for manufacturing a bicomponent polymer fiber, comprising a first inlet for receiving a core polymer component, a second inlet for receiving a cladding polymer component, and a dual-channel nozzle comprising an inner channel and an outer channel encompassing the inner channel. The inner and outer channel are in hydraulic connection with the first and second inlet, respectively. The dual-channel nozzle further comprises a joining path establishing a hydraulic connection between the inner channel, the outer channel, and a nozzle outlet of the dual-channel nozzle. The joining path is adapted for bringing the core polymer component and the cladding polymer component into contact with each other such that a contact layer comprising a mixture of the core polymer component and the cladding polymer component is formed between the core polymer component and the cladding polymer component.

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