Process for making speckled and foamed plastic article

Details Process for making speckled and foamed plastic article Process for making speckled and foamed plastic article

1992-02-18

1993-03-30

Theisen, Mary Lynn

Plastic and nonmetallic article shaping or treating: processes

With step of cooling to a temperature of zero degrees c. or...

264 451, 264 461, 264 73, 264 76, 264115, 264122, 264126, B29C 4330, B29C 6720

Patent

active

051981602

ABSTRACT:
A novel process for fabricating a multi-colored foamed speckled thermoplastic sheet is disclosed, wherein differently colored preformed thermoplastic sheets are separately comminuted into particles by grinding the sheets at the temperature about equal to the glass-transition temperatures of the sheets. The ground fine particles of different colors are mixed in an appropriate ratio and are then calendered to form sheets. This process is economical and convenient for mass production.

REFERENCES:
patent: 1975515 (1934-10-01), Mayer
patent: 2044585 (1936-06-01), Macht
patent: 2706311 (1955-04-01), Durst et al.
patent: 3040210 (1962-06-01), Charlton
patent: 3078510 (1963-02-01), Rowe
patent: 3145241 (1964-08-01), Powell
patent: 3263010 (1966-07-01), Shultz
patent: 3832429 (1974-08-01), Charpentier
patent: 4333897 (1982-06-01), Hayashi et al.
patent: 4493806 (1985-01-01), Hatzikelis et al.
patent: 4504436 (1985-03-01), Louvier
patent: 4639343 (1987-01-01), Long et al.
patent: 4923658 (1990-05-01), Hover

Affiliated with

Also associated with

Rating

Process for making speckled and foamed plastic article does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for making speckled and foamed plastic article, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for making speckled and foamed plastic article will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1279388