Showing papers on "Pressboard published in 1986"
Patent•
26 Sep 1986
TL;DR: In this article, a method for continuously forming a pressboard product from shredded scrap paper having a thermoplastic coated thereon is presented, where the shredded paper is deposited between two continuous facing sheets.
Abstract: A method for continuously forming a pressboard product from shredded scrap paper having a thermoplastic coated thereon. The shredded paper is deposited between two continuous facing sheets. The sandwiched construction is heated using radiant or convection heat and then compressed to fuse the shredded paper together.
22 citations
Patent•
22 Jul 1986
TL;DR: In this paper, a high temperature resistant pressboard having a desirable combination of compression set values and oil absorption is prepared by a process whereby a low density pressboard is first prepared by forming a wet lap of multiple layers of a waterleaf containing 50-95% by weight water and pressing the wet lap at 100-200° C under a pressure of 10-60 kg/cm 2, drying, ultimately at 270°-320° C.
Abstract: High temperature resistant pressboard having a desirable combination of compression set values and oil absorption is prepared by a process whereby a low density pressboard is first prepared by forming a wet lap of multiple layers of a waterleaf containing 50-95% by weight water and pressing the wet lap at 100-200° C. under a pressure of 10-60 kg/cm 2 , drying, ultimately at 270°-320° C. until substantially no further moisture is evolved and finally pressing at 270°-320° C. under a pressure of 8-350 kg/cm 2 and optionally cooling under restraint.
12 citations