Processes of applying urethane top coatings to resilient floor coverings
US4059709A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 21, 1976 |
| Grant date | Nov 22, 1977 |
| Priority date | — |
| Expiry date | May 21, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2471/00
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
In a process for manufacturing a resilient, resinous floor covering having a polyurethane surface coating, the in-line manufacturing improvement which comprises: applying to a foamable resinous sheet material a urethane coating composition having a viscosity in the range of from about 10 centipoises to about 100 centipoises, the application of the urethane coating composition being accomplished by a reverse-roll coating procedure wherein the casting ratio is in the range of from about 0.8:1 to about 1.1:1; and then, in an in-line manufacturing step, heating the coated, foamable, resinous sheet material to dry and to cure the urethane coating composition and to blow the foamable, resinous sheet material to form a resilient, resinous floor covering having a polyurethane surface coating, the curing of the urethane coating composition not being in excess of about 80% during the heating and blowing of the foamable resinous sheet material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.