Patent · US Expired

Process for producing pipe sleeves from mineral wool

US7740922B2 · kind B2 · utility

1Cited by

6References

14Claims

0Family size

Assignee

SAINT-GOBAIN ISOVER · FR

Inventors

Harald Ligtenberg · Lingen (Ems), DE
Anton Zysik · Kempten (Allgäu), DE
Jens Meyer · Dresden, DE
Volker Albrecht · Plauen, DE

Key dates

Filing date	Apr 14, 2004
Grant date	Jun 22, 2010
Priority date	—
Expiry date	Nov 4, 2025

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/13
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The invention relates to a process for producing pipe sleeves made of mineral wool for insulating pipelines or for reducing the sound level in pipeline systems, comprising the following steps: providing a nonwoven web (11) made of mineral wool which is provided with an uncured binder, winding up the nonwoven web (11) on a winding mandrel (2) of a winder, curing the binder. Here, at least one reinforcing layer (12, 13) is provided before the nonwoven web (11) runs into the winder, in such a way that during the winding the said reinforcing layer becomes a constituent part of the pipe sleeve produced as a result.

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