Method for producing whole eucalyptus plywood by using compound urea-formaldehyde resin against insects and mildew
A urea-formaldehyde resin and plywood technology, which is used in the joining of wooden veneers, the manufacture of veneers, and aldehyde/ketone condensation polymer adhesives, etc. Serious problems, to achieve the effect of improving aging resistance, reducing the amount of added, and white color
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Embodiment 1
[0067] The method for producing full eucalyptus plywood by adopting the anti-insect and mildew-proof composite urea-formaldehyde resin comprises the following steps:
[0068] (1) Rotary slices of wood: Use a rotary cutter to cut eucalyptus into 1.5 mm thick slices to obtain eucalyptus veneers, and pick out unqualified boards with insect eyes, decay, and excessive defects;
[0069] (2) Veneer drying: Dry the eucalyptus veneer with a hot air stove, and control the moisture content of the veneer to be less than or equal to 10%;
[0070] (3) Gluing: Glue the eucalyptus veneer with a gluing machine, arrange 9 layers of glued eucalyptus veneer criss-cross and layered according to the wood texture structure, and glue them together to obtain a eucalyptus slab; The glue is insect-proof and mildew-proof compound urea-formaldehyde resin, and the amount of glue on one side is 200g / m 2 ;
[0071] (4) Three times of cold pressing: the eucalyptus slab is cold pressed three times at a unit ...
Embodiment 2
[0092] The method for producing full eucalyptus plywood by adopting the anti-insect and mildew-proof composite urea-formaldehyde resin comprises the following steps:
[0093] (1) Rotary slices of wood: Use a rotary cutter to cut eucalyptus into 1.5 mm thick slices to obtain eucalyptus veneers, and pick out unqualified boards with insect eyes, decay, and excessive defects;
[0094] (2) Veneer drying: Dry the eucalyptus veneer with a hot air stove, and control the moisture content of the veneer to be less than or equal to 10%;
[0095] (3) Gluing: Glue the eucalyptus veneers with a gluing machine, and arrange 11 layers of glued eucalyptus veneers in criss-cross layers according to the wood texture structure, and glue them together to obtain eucalyptus slabs; The glue is insect-proof and mildew-proof compound urea-formaldehyde resin, and the amount of glue on one side is 220g / m 2 ;
[0096] (4) Three times of cold pressing: the eucalyptus slab is cold pressed three times at a u...
Embodiment 3
[0117] The method for producing full eucalyptus plywood by adopting the anti-insect and mildew-proof composite urea-formaldehyde resin comprises the following steps:
[0118] (1) Rotary slices of wood: Use a rotary cutter to cut eucalyptus into 1.5 mm thick slices to obtain eucalyptus veneers, and pick out unqualified boards with insect eyes, decay, and excessive defects;
[0119] (2) Veneer drying: Dry the eucalyptus veneer with a hot air stove, and control the moisture content of the veneer to be less than or equal to 10%;
[0120] (3) Gluing: Glue the eucalyptus veneers with a gluing machine and arrange 13 layers of glued eucalyptus veneers criss-cross and layered according to the wood texture structure, and glue them together to get eucalyptus slabs; The glue is insect-proof and mildew-proof compound urea-formaldehyde resin, and the amount of glue on one side is 230g / m 2 ;
[0121] (4) Three times of cold pressing: the eucalyptus slab is cold pressed three times at a uni...
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