Academy of Chinese forestry science
Level of state of People's Republic of China
Plywood-Clagsification
This standard set 1 theme content and suitable scope plywood is main the definition of term. This standard applies to what classify by GB9846.1 all sorts of plywood.
2 cite classification of plywood car of standard GB 9846.1
3 composition and preparation
3.1 veneer of Veneer hill comes back cut, semicircle comes back cut, dig is cut or curium the chip shape lumber that controls methodological production.
3.2 loose face Losse Side are in come back cut or dig cuts a course in, veneer and the one side that the knife contacts, this is promoted reversely because of sufferring and constant bottle generation comes back cut or dig cuts cranny.
each in 3.3 plywood
Outer Ply of 3.3.1 surface layer points to the surface layer veneer of plywood.
3.3.1.1 face plate of Face glue is complete board that watch board with exterior better quality.
3.3.1.2 the reverse side of Back photograph is expressed to the another side of face plate board.
3. 3. The central layer of plywood of Central Ply of 2 centers layer, other configures the two side in it each layers symmetrically.
3. 3. 3 core board Cross Band, direction of Lateral Ply grain and watch board the lining unit with perpendicular grain.
Centres of 3.3.4 long medium plate, direction of Longitudinal Ply grain and watch board the lining veneer of grain parallel.
3. Core of 3.5 board core places core the central layer of glue board or compound plywood. Normally its ply is more than other each.
3.4 joining together of the join with attrib wattle sheet of adjacent of the photograph in Joint same layer.
3. 4. 1 even if spell Edge Joint joining together of vertical edge of edge of veneer of two neat edges, flat-fell seam and veneer grain way are same.
3. 4. 2 end spell End Joint joining together of extreme of edge of veneer of two neat edges, flat-fell seam and veneer grain direction are perpendicular.
3. 4. 3 inclined receive Scarf Joint end of inclined face plate of two veneer edge or joining together of edge of inclined face plate.
3. 4.4 point to receive Finger Joint upright ministry machines two veneer to point to model tenon hands in wrong joining together each other on plane.
3. 5 adhesive Glue, adhesive is used at two surfaces mutual agglutinate material.
3. 5. 1 agglutination Bond is stuck with adhesive by.
3. 5. Agglutination of 2 sub Glue Linc the adhesive layer of surface of two photographs adjacent.
4 wood grain
4. Fiber of China of lumber of Grain of 1 wood grain arranges the grain that directional place forms.
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