Stock material or miscellaneous articles – Structurally defined web or sheet – Including aperture
Patent
1988-10-26
1990-03-20
Lawrence, Evan
Stock material or miscellaneous articles
Structurally defined web or sheet
Including aperture
427285, 427286, 427288, 428192, 428211, B32B 310, B32B 302, B05D 500
Patent
active
049100661
ABSTRACT:
A reinforced paper and method for making the paper. The method involves applying to finished paper or the areas of finished paper to be reinforced a reinforcing medium dissolved in water with a surface tension reducing agent added. The solution rapidly impregnates the paper and the water and surface tension reducing agent are subsequently evaporated. The reinforcing medium rearranges the bonding of the fibers in the paper, thus strengthening the paper. The process may be carried out at the line speeds of paper converters and, when only certain areas of the paper are reinforced, the reinforced areas have a thickness substantially the same as the unreinforced areas. A preferred reinforcing medium is an anionic acrylic copolymer.
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Lawrence Evan
MRI Management Resoures, Inc.
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