Method for forming a compartmented puncture sealant package by co-extrusion
US4388261A · kind A · utility
28Cited by
18References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 1, 1981 |
| Grant date | Jun 14, 1983 |
| Priority date | — |
| Expiry date | Oct 1, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T152/10693
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A puncture sealant package for incorporation into a pneumatic tire is formed by coextruding a puncture sealant, and a skin forming material. The ribs are formed in an initially circular package profile as chords. After flow in a sheet die, the chords form divider ribs making small angles with the encapulating skin. The compartments formed by the ribs prevent flow of the sealant toward the center of a tire.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.