Method of forming pipe insulation with prestressed tape closure

Details Method of forming pipe insulation with prestressed tape closure Method of forming pipe insulation with prestressed tape closure

1993-10-26

1995-05-23

Kuhns, Allan R.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

264 48, 264146, 156218, 156229, 15624413, B29C 4422, B29C 4456

Patent

active

054179017

ABSTRACT:
A method for applying a closing tape to an extruded foam article is disclosed. The tape is applied immediately after the article is extruded and while the article is still subject to shrinkage, which is common with extruded foamed products. The tape is prestressed and is of a material to alleviate the problems associated with shrinkage. This method is particularly appropriate for applying a closing tape to an extruded polyethylene pipe insulation product which has been longitudinally slit to allow the pipe to be located interior to the insulation. The tape has one side attached to one side of the slit with the other portion of the tape being positioned for closing the slit by engaging the opposite side of the slit. A pressure sensitive adhesive is provided on the tape and a release liner protects the adhesive on the other portion of the tape.

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