CN100382944C

CN100382944C - Plywood maving pinhole on wood sheet

Info

Publication number: CN100382944C
Application number: CNB2004100116451A
Authority: CN
Inventors: 林群祥
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-12-23
Filing date: 2004-12-23
Publication date: 2008-04-23
Anticipated expiration: 2024-12-23
Also published as: CN1743152A

Abstract

The present invention relates to a veneer board with pinholes on a wood sheet. In order to solve the problems of formaldehyde and solvent contamination, poor acid resistance, alkalis resistance, water resistance and the like existing in the existing veneer board, because the pinholes are pricked in the wood sheet, adhesives can enter the wood sheet so as to greatly increase binding force. Thus, on the condition of reasonable price, the adhesives can be prepared from materials with less adhesiveness, high chemical stability and favorable environmental protecting performance, and the obstruction for entering the veneer board is eliminated. The manufactured veneer board has the advantages of no formaldehyde and solvent contamination, acid and alkali resistance, strong aquosity, high intensity, endurance and low price.

Description

Be furnished with the glued board of pin hole on the wood chip

(1) technical field:

The present invention relates to a kind of glued board

(2) background technology:

As everyone knows, be used for house fitting at present, furniture manufacturing and the glued board that is in main kind status have the release formaldehyde problem, and the glued mould acid and alkali resistance that is used to build, water-based are can the aspect also fully up to expectations inadequately.

(3) summary of the invention:

Task of the present invention provides a kind of pollutions such as formaldehyde, solvent that do not have, and acid and alkali resistance, water-based energy are by force, and be solid and reliable, low-cost glued board.

Task of the present invention is finished as follows: at the wood chip that is used to the make glued board [la m that comprises filled board (core-board), the la m on floor, bamboo chip, sheet iron etc.---down as do not have do not have in addition explanation promptly with] the vertical bundle is furnished with a large amount of pin holes on the cemented surface, with cheap, chemical stability is good, there is the plastic sheeting (as the polyvinyl chloride film etc.) of certain adhesivity to be adhesive, be layered on the cemented surface, by heating, pressurization, make the plastic sheeting fusing, bonding wood chip, the plastics of fusing also enter into wood chip inside by pin hole, this increases adhesive greatly to the wood chip adhesion, thereby makes each layer of glued board be combined into very firm integral body.

Free of pinholes on the existing glued board wood chip, the crude combination in the face of adhesive of the non-varying degree of painstakingly making is mainly surperficial gluing on the wood chip, the essentially no wood chip inside that enters into of adhesive, adhesion is relatively low, its bonding strength relies on the glueability of adhesive to a great extent, so under moderate precondition, it is stronger to continue to use adhesivity at present, but have formaldehyde, the chemical stability that solvent discharges not is that very good adhesive such as urea aldehyde are produced glued board, can't fundamentally remove formaldehyde, pollution sources such as solvent are acidproof with the raising glued board, alkali, water-based can (urea aldehyde be acidproof, alkali, water-based can be not good).

Prick on each layer of the present invention wood chip and be furnished with a large amount of pin holes, even its adhesivity of adhesive of using is more relatively poor relatively, also have not big harm, because adhesive can be taken root wood chip inside by pin hole, improve the adhesion of adhesive and wood chip greatly with this, remedied the deficiency of the gluing intensity of adhesive, so can under the prerequisite of moderate cost, choose environmental protection, the material that chemical stability is good is made adhesive, and the dissatisfactory restriction of the adhesive tension that not may exist by it, remove making excessive demands to adhesive glue viscosity, the material of eliminating a lot of function admirables does the obstacle that adhesive uses, and makes plywood production can use environmental protection, stable material, guarantee formaldehydeless and other solvent contamination of the glued board that makes, not only environmental protection but also economy, firmly, durable.

(4) description of drawings:

Bundle is furnished with the wood chip enlarged diagram of pin hole.Cutting plane is vertical with cemented surface.

Fig. 1, glued board surface layer wood chip, thick 2 pin holes of facecloth pin hole 1 wood chip

Fig. 2, backing of veneer wood chip, thick 2 pin holes of two-sided cloth pin hole 1 wood chip

(5) specific embodiment:

Specific implementation process of the present invention is as follows:

1, is being used to do vertical cloth pin hole such as Fig. 1 (2) and Fig. 2 (2) of pricking on the wood chip gluing surface of glued board, aperture 0.3mm, hole depth 0.4mm, spacing 2mm * 2mm (aperture, hole depth, hole are measured visual dried thickness and suitably adjusted), can be that hand-held tool is rolled with the larger area draw point plate of similar iron nail plate, also can suppress (bundle) with the roller machine that is densely covered with draw point on the roller

Each kind plate way:

Three-ply board, surface layer wood chip Fig. 1 and internal layer wood chip Fig. 2 should have pin hole Fig. 1 (2) by cemented surface, and the order stack that requires of Fig. 2 (2) is put well, interlayer shop polyvinyl chloride film, pressurization, heating.

Filled board (core-board) glues together core (mesosphere board) with plastic sheeting earlier and becomes piece, makes inner plating, the same three-ply board of other way.

Hophornbeam plate, totally three layers, the intermediate layer is zinc-plated sheet iron, pricks the hole on the iron plate and can be aperture 0.5mm, pitch-row 10mm * 10mm, intermediate layer iron plate is an inner plating, the same three-ply board of other way.

Building is touched plate, counts nine layers, the same three-ply board of other way.

The floor, the same filled board of way (core-board)

Make above glued board and can adopt existing plywood machinery, but change brush coating and be the shop film, (former brush coating face all changes paving plastic film), the polyvinyl chloride plastic film thickness that uses is plus-pressure 10-20 kg/cm in 0.06mm-0.08mm (adjustment such as visual dried thickness) the glued board compression moulding process, heat 160-190 degree centigrade, the control temperature will notice that plastic sheeting will reach fine fusing, but there is not decomposition, the plastics that compacting reaches fusing are filled with pin hole, each interlayer close adhesion, then cooling to the plastic cement stick solidifies, take out plate typing (about 80 degrees centigrade) back, keeps flat, cooling, the saw limit, finished product.

Claims

1. one kind has the multilayer wood chip, and the wood chip interlayer has the plastic sheeting adhesive, pricks the glued board be furnished with pin hole on the wood chip, it is characterized in that: be furnished with a large amount of pin holes being used to make prick on the wood chip cemented surface of glued board, the plastic sheeting adhesive enters into pin hole inside.