Process for forming a divided conduit

Patent metadata

Field	Value
Publication number	US-10283953-B2
Application number	US-201715581487-A
Country	US
Kind code	B2
Filing date	Apr 28, 2017
Priority date	Apr 18, 2011
Publication date	May 7, 2019
Grant date	May 7, 2019

Abstract

A method of producing a divided conduit containing, in order forming a strip-shaped textile having a first longitudinal edge and a second longitudinal edge, extruding a molten thermoplastic polymer into the form of an at least partially molten conduit having an inner surface and an outer surface, and placing at least one strip-shaped substrate within the at least partially molten conduit during or directly after conduit formation such that the first longitudinal and second longitudinal edges of the strip-shaped substrate embed into the inner surface of the conduit. The strip-shaped textile is selected from the group consisting of a woven, non-woven, and knit and the strip-shaped textile is air permeable. The inner surface and outer surface of the conduit is continuous.

First claim

What is claimed is:

1. A method of producing a divided conduit comprising, in order:
forming a strip-shaped textile having a first longitudinal edge and a second longitudinal edge, wherein the strip-shaped textile is selected from the group consisting of a woven, non-woven, and knit, wherein the strip-shaped textile is air permeable;
extruding a molten thermoplastic polymer into the form of an at least partially molten conduit having an inner surface and an outer surface, wherein the inner surface and outer surface of the conduit is continuous;
placing at least one strip-shaped textile within the at least partially molten conduit during or directly after conduit formation such that the first longitudinal and second longitudinal edges of the strip-shaped textile embed into the inner surface of the conduit.

2. The method of claim 1 , wherein the distance between the first longitudinal and second longitudinal edge of the strip-shaped textile is between about 32 and 60% of the circumference of the inner surface of the conduit.

3. The method of claim 1 , wherein the distance between the first longitudinal and second longitudinal edge of the strip-shaped textile is greater than the inside diameter of the conduit.

4. The method of claim 1 , wherein at least two strip-shaped textiles are placed within the conduit during or directly after formation.

5. The method of claim 1 , wherein the strip-shaped textile comprises a polymer having a melting temperature greater than the melting temperature of the thermoplastic polymer of the conduit.

6. The method of claim 1 , wherein the strip-shaped textile forms at least two flexible, longitudinal channels for enveloping cables.

Assignees

• Milliken & Co

Inventors

• Hepfinger John M
• Zeiler Bernhard

Classifications

• B29K2913/00

  Use of textile products or fabrics as mould materials · CPC title

• B29C47/0028

  Operations & Transport · mapped topic

• G02B6/4459

  Ducts; Conduits; Hollow tubes for air blown fibres · CPC title

• F16L11/121

  specially profiled cross sections · CPC title

• B29L2023/00

  Tubular articles (B29L2024/00 takes precedence {; catheters B29L2031/7542}) · CPC title