CN101318345A - Method for manufacturing plywood backing material core strip geothermal energy floor - Google Patents

Abstract

The invention relates to a manufacturing method for a composite plate substrate core strip heated floor; wherein, the odd levels of single plates are crossed and painted with glue to form slabs. Under a pressure of 1.2MPa and a temperature of 125 DEG C, heat insulation is applied to multilayer veneer plywood for 7 to 12 minutes and then the multilayer veneer plywood is cut by a multiple blade saw to form composite plate substrate core strips, on which a sawing channel is prepared by a saw bit; the composite plate substrate core strips are formed into sheet-shaped blinds by paper twines to form a whole core plate. The clearances among the sheet plates are from 0 to 1mm. A whole sheet of finished multiplayer veneer plywood is painted with glue, goes through heat pressuring and is assembled with a dash board and a backboard for 24 to 48 hours. The manufacturing method for a composite plate of the invention has the advantages of increasing the intensity, elasticity and heat and humidity resistant stability of solid wood composite floor and reducing the waste of lumbers, and is more suitable for the geothermal heating environment.

Description

Method for manufacturing plywood backing material core strip geothermal energy floor

Technical field:

The present invention relates to a kind of method for manufacturing plywood backing material core strip geothermal energy floor, belong to house decorative material, especially be suitable for the mating formation of environment of geothermal heating.

Background technology:

Traditional three-layer wood composite flooring, its core adopts the wood lath of poplar, pine, forms with dash board, backboard gummed behind the gluing.The veneer that dash board utilizes log saw to cut out, the veneer that backboard adopts peeler log to make; Central layer then is the wood lath that utilizes the certain specification that plank side goes out through the multiple blade saw sawing, the central layer curtain that forms through putting on paper string behind the sawline groove.The technology on this production floor is generally adopted by domestic composite floor board manufacturer; But along with a large amount of exploitations of present geothermal heating system building, three-layer wood composite flooring as heating floor heat conduction and heat-resisting exist aspect stable not enough.

Summary of the invention:

The object of the present invention is to provide a kind of method for manufacturing plywood backing material core strip geothermal energy floor, utilize width at the gummed lath of the multilayer of 1.5cm～3.0cm and dash board, bottom plate glue integrator, be processed into the floor through operations such as mortise, colouring, leaching paints again, it has fabulous water-fast, heat resistance, and distortion is very little; And easier processing, tongue-and-groove tenon intensity height, smooth, attractive in appearance, sense organ is solid, stable, high resilience.

Technical scheme of the present invention is achieved in that method for manufacturing plywood backing material core strip geothermal energy floor, it is characterized in that: concrete steps are as follows:

(1) at first prepare phenolic resin glue:

1. the rate of charge of raw material: phenol: formaldehyde: caustic soda=1: 2: 0.58

2. the phenol with fusing drops in the reactor, starts stirring arm, adds a caustic soda of total amount 80%, cooling, and insulation is between 40～50 ℃.

3. add 80% formaldehyde of total amount, temperature is controlled at about 50 ℃, and timing is 50～60 minutes in the time of 40 ℃, when being warming up to 93 ℃, is incubated 1 hour.

4. between 90～93 ℃, begin viscosimetric, liquid viscosity adds the secondary formaldehyde of total amount 20% in the time of 25 ± 2S/30 ℃.

5. when temperature reaches 75 ℃, add the secondary caustic soda of total amount 20%, continue 90 ± 2 ℃ of insulations down, viscosity is cooled to 40 ℃ in the time of 40～50S/30 ℃, emit the phenolic resin glue that makes.

(2) modulation of adhesive:

Phenolic resins: formaldehyde absorbent=10: 1, display after stirring after 10～15 minutes and use.

(3) make multi-plywood:

With using fast-growing woods poplar or maple birch to revolve the veneer drying of system, cut into the specification veneer, press odd-level, horizontal vertical staggered gluing assembly under 1.2MPa pressure, is incubated 7～12min under 125 ℃ of conditions and gets final product.

(4) multi-plywood is cut branch with multiple blade saw, make the plywood backing material core strip of certain specification size.

(5) on plywood backing material core strip, mark kerf, wear the slabbing curtain with paper string again, make whole central layer with saw blade.

(6) will carry out whole multilayer plywood backing material core strip gluing again,, display 24～48h with dash board and the hot pressing of backboard assembly.

(7) mortise is carried out on the blank floor, the shape of tongue-and-groove, joint tongue can have rectangle, square and trapezoidal, colouring, japanning are made finished product at last.

The good effect of technology of the present invention: improved the intensity, elasticity of solid wooden compound floor, heat-resisting, moist stability, reduced the waste of timber simultaneously; Owing in processing reel bar process, produce a large amount of wood chips that can not utilize, and plywood backing material core strip has only less timber waste in process.

Description of drawings:

Fig. 1 is a structural representation of the present invention

Fig. 2 is a cross section subdivision graph of the present invention

1-dash board 2-joint tongue 3-backboard 4-joint tongue and tongue-and-groove among the figure

5-plywood backing material core strip 6-enamelled coating and color layers 7-central layer interspace

The 8-tongue-and-groove

Specific implementation method:

Below in conjunction with accompanying drawing the present invention is described further: as shown in Figure 1, 2, plywood backing material core strip geothermal energy floor, by dash board 1, plywood backing material core strip 5, backboard 3 is formed, and two ends, two sides have cooperatively interact in conjunction with joint tongue 2 and tongue-and-groove 8, its center core layer bar is the lath that processes of multi-plywood subdivision, and space 7 is arranged between lath; Color layers and enamelled coating 6 are arranged on the dash board 1.The shape of joint tongue 2, tongue-and-groove 8 has rectangle, square and trapezoidal.

Method for manufacturing plywood backing material core strip geothermal energy floor is characterized in that: concrete steps are as follows:

(1) at first prepare phenolic resin glue:

1. the rate of charge of raw material: phenol: formaldehyde: caustic soda=1: 2: 0.58

2. the phenol with fusing drops in the reactor, starts stirring arm, adds the caustic soda of total amount %, cooling, and insulation is between 40～50 ℃.

3. add 80% formaldehyde of total amount, temperature is controlled at about 50 ℃, and timing is 50～60 minutes in the time of 40 ℃, when being warming up to 93 ℃, is incubated 1 hour.

4. between 90～93 ℃, begin viscosimetric, liquid viscosity adds the formalin of total amount 20% in the time of 25 ± 2S/30 ℃.

5. when temperature reaches 75 ℃, add the secondary caustic soda, continue 90 ± 2 ℃ of insulations down, viscosity is cooled to 40 ℃ in the time of 40～50S/30 ℃, emit the phenolic resin glue that makes.

(2) modulation of adhesive:

Phenolic resins: formaldehyde absorbent=10: 1, display after stirring after 10～15 minutes and use.

(3) Manufacture of Floor:

A, will use fast-growing woods poplar or maple birch to revolve the veneer drying of system, cut into the specification veneer, and press odd-level, horizontal vertical staggered gluing assembly under 1.2MPa pressure, is incubated 7～12min under 125 ℃ of conditions and gets final product.

B, multi-plywood is cut branch with multiple blade saw, make plywood backing material core strip.

C, mark kerf with saw blade on plywood backing material core strip, wear the slabbing curtain with paper string again, make whole central layer, the lath gap is 0～1mm.

D, will carry out whole multilayer plywood backing material core strip gluing again,, display 24～48h with dash board and the hot pressing of backboard assembly.

E, mortise is carried out on the blank floor, the shape of tongue-and-groove, joint tongue can have rectangle, square and trapezoidal, colouring, japanning are made finished product at last.

At first be central layer bar 5 and the backboard 3 behind dash board 1 and the gluing, common hot-press gluing becomes an integral body, after sanding, tenonen processes joint tongue 2 and tongue-and-groove 8, and the back is in colouring of plate face and japanning formation 6.

Only width of cloth length of dash board generally is defined as 600～1200mm; Width is determined 70～125mm, thickness 1～4mm; Plywood substrate central layer 5 is by lath, and the lath gap is 0～1mm, and core interspace 7 is formed, and it is fixed that thickness is determined according to product specification and dash board 1 and backboard 3.Plywood backing material core strip 5 be five layers or above number of plies veneer after the vertical staggered assembly hot pressing of groove, make through the multiple blade saw subdivision again.Fullsheet veneer that backboard 3 is made by rounding or the veneer of forming through splicing in blocks.

The overall dimensions on floor is as follows:

Length: 400～～1200mm

Width: 70～125mm

Thickness: 6～12mm

But arbitrary dimension collocation in this scope.

Claims (1)

1, method for manufacturing plywood backing material core strip geothermal energy floor is characterized in that: concrete steps are as follows:

(1) at first prepare phenolic resin glue:

1. the rate of charge of raw material: phenol: formaldehyde: caustic soda=1: 2: 0.58

2. the phenol with fusing drops in the reactor, starts stirring arm, adds a caustic soda of total amount 80%, cooling, and insulation is between 40～50 ℃;

3. add 80% formaldehyde of total amount, temperature is controlled at about 50 ℃, and timing is 50～60 minutes in the time of 40 ℃, when being warming up to 93 ℃, is incubated 1 hour;

4. between 90～93 ℃, begin viscosimetric, liquid viscosity adds the formalin of total amount 20% in the time of 25 ± 2S/30 ℃;

5. when temperature reaches 75 ℃, add total amount 20% secondary caustic soda, continue 90 ± 2 ℃ of insulations down, viscosity is cooled to 40 ℃ in the time of 40～50S/30 ℃, emit the phenolic resin glue that makes;

(2) modulation of adhesive:

Phenolic resins: formaldehyde absorbent=10: 1, display after stirring after 10～15 minutes and use;

(3) Manufacture of Floor:

A, will use the veneer drying of the system of revolving of fast-growing woods poplar or maple birch to cut into the specification veneer, and press odd-level, horizontal vertical staggered gluing assembly under 1.2MPa pressure, is incubated 7～12min under 125 ℃ of conditions and gets final product;

B, multi-plywood is cut branch with multiple blade saw, make plywood backing material core strip;

C, mark kerf with saw blade on plywood backing material core strip, wear the slabbing curtain with paper string again, make whole central layer, the lath gap is 0～1mm;

D, will carry out whole multilayer plywood backing material core strip gluing again,, display 24～48h with dash board and the hot pressing of backboard assembly;

E, mortise is carried out on the blank floor, the shape of tongue-and-groove, joint tongue can have rectangle, square and trapezoidal, colouring, japanning are made finished product at last.

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