Low coefficient of friction polymer film
AssigneeSaint-Gobain Performance Plastics Corporation
InventorsChristopher M. Comeaux, Frank M. Keese
Life of this patent
Estimating the term…
Abstract
A HVAC system of a motor vehicle includes a film having openings defined therein and moveable between open and closed positions. The film regulates airflow by opening and closing apertures defined in a housing of the HVAC system. The film is disposed in a film valve assembly containing first and second rollers that wind and unwind the film. The film includes a substrate that includes a fiber selected from the group of polyester-based fibers, glass-based fibers, and combinations thereof. An elastomeric layer is disposed on the substrate layer. The substrate also includes a silicone layer disposed on the elastomeric layer for minimizing noise created as the film moves between the open and closed positions.
Claims22
A multilayer film comprising:
- a substrate having first and second major surfaces;
- a first polymer layer overlying the first major surface of the substrate and comprising an elastomer, wherein the elastomer is selected from the group consisting of urethane and silicone rubber;
- a second polymer layer overlying the first polymer layer and formed from a cured-in-place silicone polymer;
- and
- a third polymer layer overlying the second major surface of the substrate, the third polymer layer comprising fluoropolymer,
- wherein the second polymer layer has a thickness of 0.2 mils to 0.7 mils.
A multilayer film comprising:
- a substrate having first and second major surfaces;
- a first polymer layer overlying the first major surface of the substrate and comprising an elastomer, wherein the elastomer is selected from the group consisting of urethane and silicone rubber;
- a second polymer layer overlying the first polymer layer and in contact with and bonded to the first polymer layer, the second polymer layer comprising a cured silicone polymer, the second polymer layer having a thickness of 0.2 mils to 0.7 mils;
- and
- a third polymer layer disposed between the first major surface and the first polymer layer and in contact with the first polymer layer, the third polymer layer comprising fluoropolymer and colloidal silica.
A multilayer film comprising:
- a substrate having first and second major surfaces;
- a first polymer layer overlying the first major surface of the substrate and comprising an elastomer, wherein the elastomer is silicone rubber;
- a second polymer layer overlying the first polymer layer and in contact with and bonded to the first polymer layer, the second polymer layer comprising a cured silicone polymer comprising vinyl and methoxy function dimethyl siloxane, the second polymer layer having a thickness of 0.2 mils to 0.7 mils;
- and
- a third polymer layer disposed between the first major surface and the first polymer layer and in contact with the first polymer layer, the third polymer layer comprising fluoropolymer and colloidal silica.
Dependencies are inferred from the claim text.