Product containing high density skins

Details Product containing high density skins Product containing high density skins

1978-11-19

1981-08-11

Van Balen, William J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including variation in thickness

156 622, 156285, 264128, 264113, 428218, 428526, 428532, 428535, 427337, 427370, B32B 514, B32B 2304

Patent

active

042834503

ABSTRACT:
A fiberboard is manufactured having relatively high density skins on a relatively low density core by including urea in at least the surface fibers of a consolidated mat, having a density of less than 35 pounds per cubic foot, and then hot-pressing the consolidated mat at a temperature of at least 525.degree. F. to form a board having high density surface skins. In accordance with another embodiment of the present invention, urea is used to form a skin on higher density mats having a density of 35 pounds/ft..sup.3 or greater. The skin formed on the higher density mats has strength and density properties which are not as significantly different from the core material as is the skin formed over the low density core material of the first embodiment, but the skin on the higher density mats also improves the board strength, stiffness, paint holdout and design fidelity properties.

REFERENCES:
patent: 1663503 (1928-03-01), Mason
patent: 1663504 (1928-03-01), Mason
patent: 1663506 (1928-03-01), Mason
patent: 1812969 (1931-07-01), Mason
patent: 1812970 (1931-07-01), Mason
patent: 1953832 (1934-04-01), Sandell
patent: 2872337 (1959-02-01), Heritage et al.
patent: 3062699 (1962-11-01), Raphael et al.
patent: 3699203 (1972-10-01), Oshima et al.
patent: 4007076 (1977-02-01), Clarke et al.
patent: 4169748 (1979-10-01), Clarke et al.
patent: 4175148 (1979-11-01), Luck et al.
patent: 4175149 (1979-11-01), Luck et al.
patent: 4175150 (1979-11-01), Luck et al.

Affiliated with

Also associated with

Rating

Product containing high density skins does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Product containing high density skins, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Product containing high density skins will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1026227