Laminate electrical insulation part

Details Laminate electrical insulation part Laminate electrical insulation part

2007-05-18

2011-10-18

Sample, David (Department: 1783)

Stock material or miscellaneous articles

Structurally defined web or sheet

Physical dimension specified

C428S212000, C428S411100

Reexamination Certificate

active

08039095

ABSTRACT:
This invention relates to a laminate electrical insulation part for an electrical device comprising a thermoplastic film positioned between, adjacent to, and attached to two nonwoven sheets. Each of the nonwoven sheets consists of multicomponent polymeric fibers comprising at least a first polymer and a second polymer, the first polymer having a melting point that is at least 15 degrees Celsius lower than both the melting point of the second polymer and the melting point of the thermoplastic film, and the film is attached to the nonwoven sheets by the first polymer in the nonwoven sheets. The electrical insulation part has a breakdown voltage of at least 3 kilovolts, and a surface having a dynamic frictional coefficient of 0.25 or less. This invention also relates to an electrical device component comprising the laminate electrical insulation part.

REFERENCES:
patent: 4118372 (1978-10-01), Schaefgen
patent: 5248530 (1993-09-01), Jester et al.
patent: 5498464 (1996-03-01), Ikejima et al.
patent: 5885909 (1999-03-01), Rudisill et al.
patent: 6548431 (2003-04-01), Bansal et al.
patent: 2005/0130545 (2005-06-01), Bansal et al.
patent: 11-170467 (1989-06-01), None
http://en.wikipedia.org/wiki/Polyethylene—terephthalate, May 2008.
Teruhisa et al, JP 11-170467 machine translation, Jun. 29, 1999.

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