Synthetic sports turf having improved playability and wearability
US7758281B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 30, 2007 |
| Grant date | Jul 20, 2010 |
| Priority date | — |
| Expiry date | May 20, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/23979
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A durable and wear resistant synthetic sports field having at least one strip having a plurality of fibrillated polypropylene strands tufted within a multilayer backing material. The strands are tufted in a wide variety of pile heights, patterns, gauges, and stitch patterns depending upon end use. The multiplayer backing material has a top mesh polypropylene layer at least three layers of a backing material coated with a secondary coating used to contain the ends of the plurality of strands. The strips are placed onto a fine aggregate layer placed over a coarse aggregate layer and a geotextile fabric. The geotextile fabric is placed onto a compacted and leveled subgrade. A ground rubber infill, with or without sand particles and diatomaceous earth, is introduced onto the strips. In alternative arrangements, a series of perforated drains and drain tiles may be introduced to the coarse aggregate layer to promote drainage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.