Respiration type pressurized drying method for rotary cut veneer, and production method for solid-wood composite floor
A technology of solid wood composite flooring and drying method, which is applied in the field of pressure drying of rotary cut veneer, which can solve the problems of uneven glue application on the front and back sides, stress reduction, board warping, twisting, etc., so as to reduce glue opening and increase Adhesive performance, the effect of ensuring flatness
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Example Embodiment
[0019] Example 1: Preparation of five-layer solid wood composite floor based on breathing pressure drying
[0020] (1) Veneer peeling
[0021] The pine wood section is used for peeling 8mm thick veneer under hydrothermal treatment conditions, and the eucalyptus wood section is used for peeling 3.5mm eucalyptus veneer.
[0022] (2) Veneer breathing pressure drying
[0023] Place the 8mm thick peel-cut veneer in a pressure dryer (such as a hot press) at a temperature of 120°C, and apply a pressure of 1-2kg / cm to the slab with the hot press board 2 After the pressure is maintained for 80-120s, the hot plate is raised, and after 80s, the thick veneer is pressurized again with the hot plate. This is repeated about 15 times until the moisture content of the thick veneer drops below 3%. Then, the thick veneer is placed in the air to naturally absorb moisture to a moisture content of 6-8%. After standing for 24 hours, the thickness of the thick peeled veneer was tested for the degree of war...
Example Embodiment
[0035] Example 2: Preparation of three-layer solid wood composite floor based on breathing pressure drying
[0036] (1) Veneer peeling
[0037] The pine wood section is used for peeling 14mm thick veneer under hydrothermal treatment conditions, and the eucalyptus wood section is used for peeling 2mm eucalyptus veneer.
[0038] (2) Veneer breathing pressure drying
[0039] Place the 14mm thick peel-cut veneer in a pressure dryer (such as a hot press) at a temperature of 200°C, and apply a pressure of 2-3kg / cm to the slab with the hot press board 2 After holding the pressure for 500-560s, raise the hot plate, and press the thick veneer again with the hot plate after 500s. This is repeated about 4 times until the moisture content of the thick veneer drops below 3%. Then, put the thick veneer in the air and naturally absorb moisture to a moisture content of 10-12%. After standing for 24 hours, the thickness of the thick peeled veneer was tested for warpage, and the warpage in the length...
Example Embodiment
[0049] Example 3: Preparation of seven-layer solid wood composite floor based on breathing pressure drying
[0050] (1) Veneer peeling
[0051] The pine wood section is used for peeling 5mm thick veneer under hydrothermal treatment conditions, and the eucalyptus wood section is used for peeling 2mm eucalyptus veneer.
[0052] (2) Veneer breathing pressure drying
[0053] Put the 5mm thick peel-cut veneer in a pressure dryer (such as a hot press) at a temperature of 180℃, and apply a pressure of 1-2kg / cm to the slab with the hot press board 2 After the pressure is maintained for 100-150s, the hot plate is raised, and after 25s, the thick veneer is pressurized again with the hot plate. This is repeated about 10 times until the moisture content of the thick veneer drops below 3%. Then, put the thick veneer in the air and naturally absorb moisture to 8-10% moisture content. After standing for 24 hours, the thickness of the thick peeled veneer was tested for warpage, and the warpage in t...
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