Double-sided slip-resistant material and method of making same
US8480836B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2010 |
| Grant date | Jul 9, 2013 |
| Priority date | — |
| Expiry date | Jul 22, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2571/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A double-sided, slip resistant material is produced using a blown film process which produces a film having an interior heat sealable layer, a core layer of flexible polyolefin and an exterior polyolefin elastomer layer in combination with a blowing agent and optionally grit to produce a double-sided slip resistant material. A number of rollers are provided after nip rollers have fused the film together, and which form part of a machine direction orienter (MDO) that is used in line in the manufacturing process to heat, and then cool and condition (anneal and relieve any stresses and/or thickness inconsistencies in the film) prior to the film being wound onto a roll for storage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.