초록 ▼

A lightweight dust control mat having enhanced resistance to oxidation and ozonation is provided. The mat includes a rubber backing sheet with a base rubber of NBR or SBR mixed with a polar polymer additive and a chemical blowing agent. The ratio of the base rubber to the polymer additive is between

A lightweight dust control mat having enhanced resistance to oxidation and ozonation is provided. The mat includes a rubber backing sheet with a base rubber of NBR or SBR mixed with a polar polymer additive and a chemical blowing agent. The ratio of the base rubber to the polymer additive is between about 1.2 and 9. Following vulcanization, the rubber sheet has a specific gravity of less than about 0.98 and a Bayer ozone cracking incidence factor of 4 or less.

대표청구항 ▼

[ What is claimed is:] [1.] A dust control mat suitable for multiple washings and dryings comprisinga carrier fabric;a pile material tufted into the carrier fabric forming a pile surface extending from one side of the carrier fabric; anda rubber sheet comprisinga base rubber being NBR;a polymer ozon

[ What is claimed is:] [1.] A dust control mat suitable for multiple washings and dryings comprisinga carrier fabric;a pile material tufted into the carrier fabric forming a pile surface extending from one side of the carrier fabric; anda rubber sheet comprisinga base rubber being NBR;a polymer ozone-resistance additive being EPDM; anda chemical blowing agent; whereinthe ratio of base rubber to polymer ozone-resistance additive is from 1.2 to 9;the rubber sheet is integrated with the carrier fabric on the side of the carrier fabric from which the pile surface does not extend;the rubber sheet is vulcanized under heat and pressure; andthe resultant foam rubber sheet has a specific gravity of not greater than 0.98 and a Bayer ozone cracking incidence factor of 4 or less.