Process for the manufacture of interpenetrating polymer...

Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor

Reexamination Certificate

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C156S329000, C427S002100, C427S002310, C427S208200, C427S387000, C428S040100, C428S041400, C428S304400, C428S306600, C428S308400, C428S313500, C428S315500, C428S317100, C428S317700, C428S318400, C428S320200, C428S321100, C428S421000

Reexamination Certificate

active

07087135

ABSTRACT:
A novel method of producing interpenetrating polymer network (“IPN”) sheeting. Particularly, an improved method of producing such sheeting and bonding it to a backing layer for use as various types of wound dressings and scar management products. The new process represents several improvements over previous techniques as follows: a) single-pass process, b) no second coating of liquid polymer required to act as glue, c) no solvents or other processing aids required, d) no additional oven length needed to effect the required dwell time, e) increased line speed relative to prior techniques, and g) the carrier substrate20need only be coated with a release surface on one side.

REFERENCES:
patent: 4832009 (1989-05-01), Dillon
patent: 5009224 (1991-04-01), Cole
patent: 5702503 (1997-12-01), Tse Tang
patent: 5919330 (1999-07-01), Pall et al.
patent: 6235662 (2001-05-01), Zehnder
patent: 2155851 (1985-10-01), None
patent: 61-40328 (1986-02-01), None

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