Laminated insulation

Details Laminated insulation Laminated insulation

1986-04-21

1989-04-11

Herbert, Thomas J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including aperture

156251, 156293, 1563099, 428198, 428511, 4285375, B32B 310, B32B 2710

Patent

active

048205702

ABSTRACT:
A laminated insulation paper of the type having two cellulose layers separated by a plastic layer is formed with through holes in the plastic layer such that the respective cellulose layers may contact one another through the through holes. The insulation paper is formed by pressing heated, rounded pins into one of the cellulose layers while backing the other layer until the two cellulose layers are contacted through the hole thus formed in the plastic layer.

REFERENCES:
patent: 3671284 (1972-06-01), Uhrig
patent: 3715251 (1973-02-01), Prentice
patent: 4229473 (1980-10-01), Elber
patent: 4313984 (1982-02-01), Moraw et al.
patent: 4378296 (1983-03-01), Urai et al.
patent: 4400422 (1983-08-01), Smith

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