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Bibliographic Data
Control Number56037
Date and Time of Latest Transaction20060619141942.4
General Information060619s |||||||||b ||00|||
Cataloging SourcePCARRD-DOST
Main Entry - Personal NameVillaflor, Armando A.
Main Entry - Uniform TitleENGLISH
Title StatementGluability of rotary-cut sapwood and heartwood veneers from apitong (Dipterocarpus grandiflorus Blco.)
General NoteCollege, Laguna: UPLB, [n.d.]. 21p
Summary, Etc.Some 160 panels of 3-ply 3/8" x 12" plywood were made out of apitong sapwood and heartwood veneers to determine their differences in gluebond formation for exterior-type plywood. The influences of two resin adhesive systems: phenol formaldehyde with Cascofil filler (PFC 25) and with Norprofil filler (PFN 22) and assembly time (5, 20, 50 and 80 minutes)) on gluebond quality were also determined. The glue-mix ages (GMA) were of five levels: 5, 55, 110, 220, and 330 minutes. The best gluebonds were obtained in the GMA range of 10 to 220 minutes for PFC 25 resin with heartwood substrates. Panels of heartwood-to-heartwood interfaces with PFC 25 phenolic resin adhesive at GMA of 55-220 minutes at assembly time of 50 or 80 minutes, including GMA of 10 minutes at assembly time of 80 minutes, developed glueliness which passed the US PSI-74. Apitong sapwood plywood was unable to produce exterior-type gluebond. This was due to its highly porous nature or high degree of permeability
Subject Added Entry - Topical TermDIPTEROCARPUS GRANDIFLORUS
 CHEMICOPHYSICAL PROPERTIES
 WOOD INDUSTRY
 VENEERS
LocationDOST PCARRD
  
     
 
Physical Location
Department of Science and Technology
Philippine Council for Agriculture, Forestry and Natural Resources Research and Development
  
     
 
Digital Copy
Not Available
  
     
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