Summary of the invention
Technical problem to be solved by this invention is to provide a kind of production method of decorating with laminated veneer lumber sheet material, the laminated veneer lumber board cost of using the method to produce is low, stripe shape obviously, contrast property is strong, outward appearance good, size and stable performance, is suitable for the decorative uses such as floor, wallboard and ceiling.
The technical solution adopted in the present invention is:
A kind of production method of decorating with laminated veneer lumber sheet material is characterized in that comprising following processing step:
(1) the inferior grade log is first carried out to the softening processing of boiling, then rotary-cut, cutting, the wood single-plate that formation thickness is 1-5 mm; Drying, be reduced between 3% to 6% moisture content again.
(2) get the wood single-plate of half step (1) gained, the resin impregnating liquid that is 30% to 60% with solid content carries out immersion treatment 3-10 min, also plays coloration in the time of the veneer gluing.For a change flood the color of veneer or make to flood veneer and darken, can in resin impregnating liquid, add the pigments such as iron oxide red of 1-5%; Shoal for making to flood the veneer color, can in resin impregnating liquid, add 5-10% urea.Wood single-plate after dip dyeing is dry 1-1.5 hour at 50-80 ℃ of temperature, makes the wood single-plate moisture content reach 9-15%.
(3) wood single-plate and the wood single-plate after impregnation process of impregnation process do not carry out interval rift grain assembly, form the slab that thickness is not more than 50mm.
(4) slab is displayed 10-30 min, then sends into preformer precompressed 3 to 10 min under pressure 0.8-1.2 MPa, to reduce slab thickness.
(5) slab that will press is in advance sent into hot press (adopting common multilayer or single-layer hot press to carry out hot pressing gets final product) and is carried out hot pressing, hot plate temperature 140-155 ℃, hot pressing pressure 0.8-2.0 MPa, hot pressing time 15-30s/mm.
(6) slab suppressed is naturally cooling, then perpendicular to plate face saw certain thickness requirement processed etc. wide lath, obtain the present invention and decorate use laminated veneer lumber sheet material (laminated veneer lumber lath).This decoration can be used for interior decoration with the laminated veneer lumber lath after sanding, paint; Perhaps also can spell widely to being coated with after room temperature setting adhesives pressurization by panel side, obtain after cured with the decoration of streak decoration effect laminated veneer lumber plate.
Described step (1) the middle and low grade log is one or both or three kinds or four kinds in these several timber varieties of trees of poplar, Eucalyptus, masson pine and larch.The ratio of every kind of timber all can be selected in theory in the 0-100% interval range, specifically can need to be adjusted according to difference.When selecting poplar and another seeds, board using poplar board and another seeds veneer respectively account for half usually, only have board using poplar board to make impregnation process.
Phenolic resins in described step (2) can be one pack system, also can be bi-component.Bi-component resin impregnating liquid is prepared by the following method: in high molecular weight phenolic resin (molecular weight 1000-2000) and pf resin of low molecular weight (molecular weight 200-1000) are interval according to (1 ︰ 9)-(9 ︰ 1), a certain ratio is mixed and is stirred.Utilize this bi-component resin impregnating immersion stain wood single-plate, can realize that phenolic resins partly permeates wood single-plate inside, part is stayed the wood single-plate surface as adhesive, avoid second glue spreading, time saving and energy saving.
In described step (6), room temperature setting adhesives is polyurethane resin.
Compared with prior art, the present invention has following remarkable advantage and beneficial effect: product cost of the present invention is low, and phenolic resin curing rear surface hardness is high, water-tolerant, makes the product size and the stable performance that obtain.Can form the striped at interval by the laminated veneer lumber sheet material of assembly production of the present invention, contrast property is strong, strengthens aesthetic feeling, can greatly improve the added value of inferior grade timber; Simultaneously, product discharges without free formaldehyde substantially, and environmentally-friendly sanitary, can be widely used in the decorative uses such as floor, wallboard and ceiling.
shown in accompanying drawing
Shown in Fig. 1 is the structural representation of the decoration that obtains of the embodiment of the present invention with laminated veneer lumber sheet material;
Shown in Fig. 2 is the structural representation of the decoration that obtains of the embodiment of the present invention with the laminated veneer lumber plate.
The specific embodiment
Below in conjunction with embodiment, the present invention is further described in detail, but is not limited to this.
The present embodiment is decorated and is comprised following processing step by the production method of laminated veneer lumber sheet material:
(1) select poplar and two kinds of seeds of masson pine, poplar and masson pine log are first carried out to boiling is softening to be processed, the veneer that then peeling thickness is 3.2mm respectively, veneer, after cutting out, then is dried to the moisture content of 3-6% through veneer dryer.
(2) get the board using poplar board of step (1) gained, when carrying out immersion treatment 3-5 min(gluing, also plays the bi-component resin impregnating liquid that is 50% with solid content coloration), after dip dyeing at 50 ℃ of temperature dry 1-1.5 hour, make the wood single-plate moisture content reach 9-15%.Bi-component resin impregnating liquid is prepared by the following method: high molecular weight phenolic resin (molecular weight 1000-2000) and pf resin of low molecular weight (molecular weight 200-1000) are mixed and are stirred according to the ratio of 5 ︰ 5.
(3) board using poplar board after untreated Masson pine timber veneer and dipping is carried out to interval rift grain assembly, form the slab formed by 11 wood single-plate assemblies.
(4) slab is displayed 5 min, then sends into preformer precompressed 3min under pressure 1.0 MPa.
(5) slab that will press is in advance sent into common multi-daylight press and is carried out hot pressing, 150 ℃ of hot plate temperatures, and hot pressing pressure 1.2 MPa, hot pressing time 30s/mm, obtaining thickness is the slab of 35mm left and right.
(6) post-production: the slab suppressed is naturally cooling, then the wide lath such as be 12mm perpendicular to plate face saw thickness processed, obtain the present invention and decorate use laminated veneer lumber sheet material (laminated veneer lumber lath), as shown in Figure 1.This laminated veneer lumber lath can be used for the interior decorations such as floor, wallboard and ceiling after sanding, paint; Perhaps also can pressurization spelling after lath side painting curing polyurethane at room temperature resin is wide, clamping is curing obtains with the decoration of streak decoration effect laminated veneer lumber plate, as shown in Figure 2 after about 1.5 hours.This decoration can be used for the interior decorations such as floor, wallboard and ceiling with the laminated veneer lumber plate after sanding, paint.
The above embodiment of the present invention is to explanation of the present invention and can not be for limiting the present invention, and the implication suitable with claims of the present invention and any change in scope, all should think to be included in the scope of claims.