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Preparation method of multiply plywood
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A kind of plywood, adhesive technology
Active Publication Date: 2020-03-06
浦北县昌宏木业有限公司
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Moreover, the existing plywood is prone to aging and cracking, and the viscosity of the glue decreases, resulting in damage to the floor, which often requires renovation and consumes a lot of manpower and material resources.
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Embodiment 1
[0025] A preparation method for multilayer plywood, comprising the following steps:
[0026] (1) After cutting the wood into sawdust, wood particles or shavings, dry it, soak it in the insect repellent liquid for a period of time, take it out and dry it naturally, then immerse it in the insect repellent liquid again, take it out and dry it to obtain the plywood raw material;
[0027] (2) After laying the plywood raw material flat, spray the adhesive, and spread a layer of sound insulation material, which is a thin sheet compacted with mineral wool, spray the adhesive on the surface, and then spread a layer of plywood raw material to pressurize Prepare and form a first-grade plywood, the thickness of the first-grade plywood is 4mm;
[0028] (3) Wire-cut the first-grade plywood in step (2) on both sides of the first-grade plywood. After the adhesive is laid on the plywood raw materials, it is pressurized to form a secondary plywood. The method of spraying the adhesive is first ...
Embodiment 2
[0037] A preparation method for multilayer plywood, comprising the following steps:
[0038] (1) After cutting the wood into sawdust, wood particles or shavings, dry it, soak it in the insect repellent liquid for a period of time, take it out and dry it naturally, then immerse it in the insect repellent liquid again, take it out and dry it to obtain the plywood raw material;
[0039] (2) After laying the plywood raw material flat, spray the adhesive, and spread a layer of sound insulation material, which is a thin sheet compacted with mineral wool, spray the adhesive on the surface, and then spread a layer of plywood raw material to pressurize Prepare and form a first-grade plywood, the thickness of the first-grade plywood is 12mm;
[0040] (3) Wire-cut the first-grade plywood in step (2) on both sides with a metal wire. After cutting out several arc-shaped grooves, the depth of the groove is 1.5mm, and spray on the upper and lower sides of the first-grade plywood. After the ...
Embodiment 3
[0049] A preparation method for multilayer plywood, comprising the following steps:
[0050] (1) After cutting the wood into sawdust, wood particles or shavings, dry it, soak it in the insect repellent liquid for a period of time, take it out and dry it naturally, then immerse it in the insect repellent liquid again, take it out and dry it to obtain the plywood raw material;
[0051] (2) After laying the plywood raw material flat, spray the adhesive, and spread a layer of sound insulation material, which is a thin sheet compacted with mineral wool, spray the adhesive on the surface, and then spread a layer of plywood raw material to pressurize Prepare and form a first-grade plywood, the thickness of the first-grade plywood is 9mm;
[0052] (3) Carry out wire cutting on both sides of the first-grade plywood in step (2), after cutting out several arc-shaped grooves, the depth of the groove is 1mm, and spray glue on the upper and lower sides of the first-grade plywood After the ...
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Abstract
The invention discloses a preparation method of a multiply plywood. The preparation method comprises the following steps that after wood is cut into wood chips, wood particles or shavings, drying is performed, and the wood chips, the wood particles or the shavings are soaked in an insect repellent solution for a period of time, then taken out for air drying and then immersed in the insect repellent solution again and taken out for drying to obtain a plywood raw material; after the plywood raw material is laid flat, an adhesive is sprayed, a layer of soundproofing material is laid, the adhesiveis sprayed on the surface, then a layer of plywood raw material is laid, and pressurized preparation is performed to form a first-level plywood; a plurality of arc-shaped grooves are cut in the two side surfaces of the first-level plywood by using metal wires, the adhesive is sprayed on the upper side and the lower side of the first-level plywood and the plywood raw material is laid, and then pressurized synthesis is performed to obtain a second-level plywood; and the above steps are repeated for multiple times to form multi-level plywood to be dried, mold proof liquid is sprayed on the synthesized multi-level plywood, and drying is performed to obtain the finished plywood. The preparation method of the multiply plywood is simple to operate, the prepared plywood is free of aldehydes and has good safety, and widespread popularization is convenient.
Description
technical field [0001] The invention relates to the technical field of plate preparation, in particular to a preparation method of multi-layer plywood. Background technique [0002] With the development of society and the gradual improvement of people's living standards, people pay more and more attention to the quality and grade of housing decoration, so more and more people choose to make wooden floors. With less and less wood flooring cut from planks, people's eyes are gradually turning to plywood, which uses scraps to glue together to form boards. When making plywood, you need to use adhesives for bonding. Urea-formaldehyde resin is currently the most widely used adhesive in man-made composite panels, and its main raw materials are formaldehyde and urea. Formaldehyde often remains in urea-formaldehyde resin glue. Formaldehyde is a kind of colorless strong irritating gas, has been identified as carcinogenic and teratogenic shape material by the World Health Organizatio...
Claims
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Application Information
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