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OVERLAYS FOR LUMBER--AN OLD PRODUCT IN A NEW DRESS

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  • Title:
    OVERLAYS FOR LUMBER--AN OLD PRODUCT IN A NEW DRESS
  • Author: Fleischer,H O ; Heebink,B G
  • Subjects: ADHESIVES ; BONDING ; FINISHES ; OVERLAYS ; PRESERVATION ; PROCESSING ; SURFACE FINISHING ; WOOD ; WOOD PULP
  • Description: The dimensional movement across the grain of nominal 1-inch pine lumber is greatly reduced when the lumber is overlaid on both sides with a suitable resin-impregnated kraft sheet whose machine direction is parallel to the lumber grain. Certain vulcanized fiber sheets as well as parchmentized paper sheets can be bonded to only one side of a flat-grain pine board so that the machine direction of the sheet is paralled to the grain of the lumber, and littler or no increase in warping tendencies occurs. The paint retention characteristics of lumber siding such as flat-grain southern pine or other species are greatly improved by the use of overlays. Overlay materials of this type should form a suitable base material for factory application of finishes for exterior service. Lumber manufacturers are also looking at other synthetic film-finishing materials, which incorporate both the overlay and the finish in a single film to be bonded to the surface. The most promising of these at the present time appear to be chlorosulfonated polyethylene and polyvinyl fluoride. (Author) In cooperation with Wisconsin U., Madison.
  • Creation Date: 1964
  • Language: English
  • Source: DTIC Technical Reports
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