Method for fabricating olefin tarpaulins
US5795516A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 1997 |
| Grant date | Aug 18, 1998 |
| Priority date | — |
| Expiry date | Apr 24, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/02
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method for fabricating olefin tarpaulins by treating both sides of a base fabric woven from high strength polyester filaments with a coating composition using an extruder followed by compressing the coated polyester fabrics with a calendering roller. The coating composition is obtained by dry-blending or melt-blending LLDPE (linear low density polyethylene) or LDPE (low density polyethylene) in an amount of 15.about.94.5% by weight with an elastomer of ethylene-.alpha.-olefin co-polymer of 5.about.60% by weight which are (i) ethylene propylene rubbers or (ii) co-polymers of ethylene and octene or butene; coloring master batch chip in an amount of 0.5.about.15% by weight obtained by mixing LLDPE or LDPE with pigments or titanium dioxide; and adhesion-preventing master batch chip of 0.about.10% by weight obtained by mixing LLDPE or LDPE with silica or calcium carbonate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.