Process for preparing open-cell sponge rubber printing material

Details Process for preparing open-cell sponge rubber printing material Process for preparing open-cell sponge rubber printing material

1977-11-10

1980-07-15

Anderson, Philip

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

101333, 1014011, 264 49, 521 61, B29D 2700

Patent

active

042128390

ABSTRACT:
A printing material composed of an open-cell sponge rubber capable of including therein a colored ink, which does not necessitate a stamp pad for the stamping operation, is disclosed. This printing material is prepared by adding appropriate amounts of soluble starch and a fine powder of an easily water-soluble salt which does not decompose or gasify at a curing temperature to a mixture of a starting rubber, a curing agent and a filler, kneading and milling the mixture, introducing the mixture into a mold, heating the mixture to effect curing, removing said starch and salt by washing, and drying the resulting product.

REFERENCES:
patent: 2175798 (1939-10-01), Hauser
patent: 2349613 (1944-05-01), Chollar
patent: 2353877 (1944-07-01), Chollar
patent: 2504208 (1950-04-01), Locke et al.
patent: 2537631 (1951-01-01), Greenup et al.
patent: 2594348 (1952-04-01), Rockoff
patent: 3214501 (1965-10-01), Strauss
patent: 3342911 (1967-09-01), Funahashi

Affiliated with

Also associated with

Rating

Process for preparing open-cell sponge rubber printing material 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 preparing open-cell sponge rubber printing material , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for preparing open-cell sponge rubber printing material will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-463841