Patent · US Active

Laser-induced plastic foaming

US8759409B2 · kind B2 · utility

6Cited by

2References

12Claims

0Family size

Assignee

Chemische Fabrik Budenheim KG · DE

Inventors

David Kümmet · Budenheim, DE
Rüdiger Wissemborski · Gau-Algesheim, DE
Hendrik Wermter · Rauenthal, DE
Rainer Schnee · Mainz, DE

Key dates

Filing date	Mar 22, 2011
Grant date	Jun 24, 2014
Priority date	—
Expiry date	Mar 22, 2031

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08K2003/321
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A matrix material composed of polymer, preferably of thermoplastic polymer, or coating material. The matrix material includes 0.01 to 50% by weight of an additive for foaming of the matrix material which can be triggered by irradiation with laser light or IR light. The additive includes at least the following constituents: a) at least one absorber material which, embedded or dissolved in the matrix material, absorbs laser light or IR light and brings about local heating in the matrix material at the site of irradiation with laser light or IR light, and b) at least one blowing agent which, when heated due to the irradiation with laser light or IR light to temperatures above 50° C., forms a gas which foams the matrix material by decomposition, chemical conversion or reaction.

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