CN103538125B - A kind of veneer of formaldehyde-free wood-plastic composite board pastes technique soon - Google Patents

A kind of veneer of formaldehyde-free wood-plastic composite board pastes technique soon Download PDF

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Publication number
CN103538125B
CN103538125B CN201310490381.1A CN201310490381A CN103538125B CN 103538125 B CN103538125 B CN 103538125B CN 201310490381 A CN201310490381 A CN 201310490381A CN 103538125 B CN103538125 B CN 103538125B
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China
Prior art keywords
veneer
plastic
wood
hot pressing
plastic composite
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CN201310490381.1A
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Chinese (zh)
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CN103538125A (en
Inventor
叶翠仙
唐兴平
林祥江
徐志杰
林俊峰
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福建农林大学
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Abstract

The present invention relates to a kind of veneer without aldehyde veneer/composite panel of plastic material surface and paste technique soon, using prefabricated profiled sealed polyethylene plastic as veneer binding material.This process had both avoided in traditional handicraft seep through, the bubbling adopting liquid adhesive veneer easily to occur, the defect such as to come unglued, overcome again wood-plastic clad plate veneer and composite plate and prepare the surface quality shortcomings such as simultaneously shaping veneer variable color, maintain the environmental-protecting performance of facing wood-plastic clad plate and the best decorate properties of veneer.

Description

A kind of veneer of formaldehyde-free wood-plastic composite board pastes technique soon

Technical field

The present invention relates to decoration technology and the method on the wood-plastic composite plywood surface of wood-based plate surface second processing technique field, particularly a kind of novel environment friendly.

Background technology

Have a large amount of glued board adopting production of adhesive both at home and abroad, there is free formaldehyde in various degree in its product, contaminated environment.And the research of the plywood production technology of the wood single-plate in recent years occurred and plastic sheeting compound shows, veneer surface does not carry out rolling hole process, and its product can only reach national standard II class glued board requirement (GB/T17657-1999).And on the cemented surface of veneer rolling some holes, replace aldehyde adhesive stick with sealed polyethylene plastic, routinely the wood-plastic composite plywood prepared of glued board producing method, bonding strength can reach the requirement of national standard I class glued board.This kind of wood-plastic composite plywood dimensionally stable, water-fast, moistureproof, content of formaldehyde is lower than 0.1mg/L, much smaller than E0 level (0.5mg/L) the glued board content of formaldehyde requirement on market, belong to novel wood-plastic composite plywood that is healthy, environmental protection, the field such as high-grade interior decoration, furniture making can be widely used in.In order to improve the surface decoration effect of this material, usually will to its carry out surface secondary operations, wherein veneer overlay is that one both can save precious timber, again can Devoting Major Efforts To Developing top grade decoration, furniture base material effective way.In the traditional handicraft of veneer overlay, generally use air aldehyde resin glue as binding material, easily cause the mass defects such as the seep through of wood-plastic clad plate secondary veneer, bubbling, cracking, reduce product percent of pass, increase production cost, and cause the free formaldehyde secondary pollution of material.

Current technology relates generally to surface decoration tech and the method for environment-friendly type wood-plastic composite plywood, main based on the top finishing of composite plate in traditional handicraft, and this technique limits the application of wood-plastic composite plywood as high-grade indoor, furniture woods; Another kind of technique is the base material preparation process once hot pressing by veneer overlay and wood-plastic composite plywood, due to hot pressing temperature high (reaching 160-180 DEG C), hot pressing time longer (slab heating time that general 16mm is thick is about 16 minutes), easily cause charing and the variable color of veneer veneer, affect the incrustation quality of wood-plastic composite plywood.The invention belongs to the secondary operations technique of wood-plastic composite plywood, make binding material with plastic sheeting, veneer overlay hot pressing time is short, can keep the best decorate properties on the environmental-protecting performance of facing wood-plastic clad plate and veneer surface simultaneously.

Summary of the invention

The object of the present invention is to provide a kind of veneer of formaldehyde-free wood-plastic composite board to paste new technology and production method thereof soon, this process hot pressing time is short, plastic sheeting moisture-free and have certain toughness; Adopt wood-plastic clad plate prepared by this process, not only remain the environmental-protecting performance of veneer composite board and the best decorative effect of veneer, avoid in traditional handicraft seep through, the bubbling adopting liquid adhesive veneer easily to occur, the defect such as to come unglued, and manufacture process is pollution-free, technique is simple, production cost is low.

To achieve these goals, the veneer that the invention provides a kind of formaldehyde-free wood-plastic composite board pastes technique soon, and it comprises the following steps:

1) assembly: by from top to bottom: veneer, plastics, base material, plastics, balance layer assembly, obtain composite plate blanks; Described veneer moisture content is 8-12%; The thickness of described veneer is 0.6-1.5mm; Described veneer directly uses when thickness is less than 0.8mm; When thickness is equal to or greater than 0.8mm, veneer processes towards the one side of base material through rolling hole, and pore size is 0.5-1mm, and hole quantity is at 20-30/cm 2; Described plastics are sealed polyethylene plastic, can be commercially available prefabricated profiled, also can obtain with waste plastic processing; Described base material is wood-plastic composite plywood, preferably selects environment-friendly type formaldehyde-free wood-plastic composite plywood, with ensure product without aldehyde, thickness deviation is 0.1-0.2mm, and water content is 8-10%; Described balance layer is veneer or paper.Wherein paper can select the special paper that current glued board technique is generally selected.

2) hot pressing: temperature 160-180 DEG C, pressure 0.6-0.8MPa, time 1-2min;

3) under maintenance pressure state, cool 2-3min, plastic sheeting is solidified;

4) display, cutting edge process.

Step 2) in the concrete operations of hot pressing be: put rubber mount from top to bottom successively, aluminium alloy plate, composite plate blanks carry out hot pressing; Hot pressing condition is temperature 160-180 DEG C, pressure 0.6-0.8MPa, time 1-2min.After hot pressing and solidification, remove rubber mount and aluminium alloy plate, then carry out displaying, cutting edge process.Rubber mount and aluminium alloy plate ensure that composite plate blanks particularly veneer layer in hot pressing smooth and not fragile.

The production equipment of the present invention and existing environment-friendly type wood-plastic composite plywood and process flow system compatibility, saw system and GB/T9846.3-2004 the 3rd part according to GB/T9846.7-2004 glued board test specimen: the concerned countries standards such as normal plywood general technical specifications carry out composite plate measuring physical properties, the veneer decoration formaldehyde-free wood-plastic composite board that production method of the present invention makes, prepare compared with the technique of veneer overlay once hot pressing with wood-plastic composite plywood base material, surface bonding intensity can improve more than 40%.Employing condensed steam water measures, and burst size of methanal, lower than 0.1mg/L, thoroughly solves the problem of artificial board formaldehyde release.By this new technology, avoid in traditional handicraft seep through, the bubbling adopting liquid adhesive veneer easily to occur, the defect such as to come unglued, and manufacture process is pollution-free, occurs the recyclable recycling of the plate of mass defect, technique is simple, production cost is low.

Accompanying drawing explanation

Fig. 1. assembly structure

Fig. 2. heating platen blank structure.

Detailed description of the invention

More being convenient to make content of the present invention understand, below in conjunction with detailed description of the invention, technical solutions according to the invention are described further, but the present invention being not limited only to this.

Embodiment 1

1) assembly: by from top to bottom: veneer, sealed polyethylene plastic, base material, sealed polyethylene plastic, balance layer assembly, obtain composite plate blanks; Described veneer water content is 8%; The thickness of described veneer is 0.7mm; Sealed polyethylene plastic is commercially available prefabricated; Described base material is the environment-friendly type wood-plastic composite plywood of surfacing, and thickness deviation is 0.1mm, and water content is 8%; Balance layer is veneer.

2) hot pressing: put successively from top to bottom, the thick rubber mount of 3mm, aluminium alloy plate, composite plate blanks carry out hot pressing; Temperature 160 DEG C, pressure 0.8MPa, time 2min;

3) under maintenance pressure state, cool 2min, plastic sheeting is solidified;

4) display, cutting edge process.

Embodiment 2

1) assembly: by from top to bottom: veneer, plastics, base material, plastics, balance layer assembly, obtain composite plate blanks; Described veneer water content is 12%; The thickness of described veneer is 1.4mm; Down, the one side namely towards plastics processes through rolling hole veneer, and pore size 0.5-1mm, irregular distribution, hole quantity is at 25/cm 2; Described plastics are the sealed polyethylene plastic that waste plastic is processed into; Described base material is the environment-friendly type wood-plastic composite plywood of surfacing, and thickness deviation is 0.2mm, and water content is 9%; Balance layer is paper;

2) hot pressing: put successively from top to bottom, the thick rubber mount of 3mm, aluminium alloy plate, composite plate blanks carry out hot pressing; Temperature 180 DEG C, pressure 0.6MPa, time 1min;

3) under maintenance pressure state, cool 3min, plastic sheeting is solidified;

4) display, cutting edge process.

Claims (2)

1. the veneer of formaldehyde-free wood-plastic composite board pastes a technique soon, and it comprises the following steps:
1) assembly: by from top to bottom: veneer, plastics, base material, plastics, balance layer assembly, obtain composite plate blanks; Described veneer moisture content is 8-12%; The thickness of described veneer is 0.6-1.5mm; Described veneer directly uses when thickness is less than 0.8mm; When thickness is equal to or greater than 0.8mm, veneer one side is down through rolling hole process, and pore size is 0.5-1mm, and hole quantity is at 20-30/cm 2; Described plastics are sealed polyethylene plastic; Described base material is wood-plastic composite plywood, and thickness deviation is 0.1-0.2mm, and water content is 8-10%; Described balance layer is veneer or paper;
2) hot pressing: temperature 160-180 DEG C, pressure 0.6-0.8MPa, time 1-2min;
3) under maintenance pressure state, cool 2-3min, plastic sheeting is solidified;
4) display, cutting edge process.
2. veneer as claimed in claim 1 pastes technique soon, it is characterized in that step 2) in the concrete operations of hot pressing be: put rubber mount from top to bottom successively, aluminium alloy plate, composite plate blanks carry out hot pressing; Hot pressing condition is temperature 160-180 DEG C, pressure 0.6-0.8MPa, time 1-2min.
CN201310490381.1A 2013-10-19 2013-10-19 A kind of veneer of formaldehyde-free wood-plastic composite board pastes technique soon CN103538125B (en)

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CN103753660B (en) * 2014-02-07 2016-09-14 汕头市宜华家具有限公司 The linear size applicator of a kind of timber splicing and using method thereof
AU2014202375B1 (en) * 2014-05-01 2015-07-02 Wangwealth Pty Ltd Formwork member
CN105397877A (en) * 2015-11-02 2016-03-16 福建农林大学 Preparation method for integrating colorful furniture base material through China firs

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CN201295962Y (en) * 2008-12-09 2009-08-26 吴章康 Composite fireproof board taking wood-plastic composite board as base material
CN201395921Y (en) * 2009-04-24 2010-02-03 卢伟建 Solid wood plastic composite floor
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