CN101372165A

CN101372165A - Method for fusing thermoplastic plastic thin film on artificial board surface by double-pressing machine

Info

Publication number: CN101372165A
Application number: CNA2007101451709A
Authority: CN
Inventors: 林群祥
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-08-25
Filing date: 2007-08-25
Publication date: 2009-02-25

Abstract

The invention relates to a method that a dual presser sews thermoplastic plastic film on the surface of an artificial board. Based on the improvement of the method applied in patent 200510007187.9, the invention uses a hot presser and a cold presser, the artificial board pricked with pinholes on the surface, the thermoplastic plastic film laid on the pinholes, and a stainless steel plate with surface being processed covered on the film which are taken as subassemblies of the composite film and are placed on the hot presser for heating and pressing so as to lead the plastic film to melt and enter into the pinholes. The film is formed into a required surface under the pressing of the stainless steel plate, and then the subassemblies of the composite film are transferred to the cold presser for pressing, cooling and shaping, so as to achieve energy conservation, high efficiency and high quality.

Description

Double-pressing machine is in the method for wood-based plate surface fusing thermoplastic plastic film

Technical field the present invention relates to a kind of method wood-based plate surface recombination thermoplastic film.

Background technology patent application " a kind of method at wood plank surface fusing thermoplastic plastic film ", application number " 200510007187.9 " discloses a kind of method at the direct fusion composite thermoplastic plastic sheeting in wood plank surface.This method is at wood plank melt surface composite thermoplastic plastic sheeting, heating, pressurization, cooling are being carried out on the press on the same stage, and the actual conditions of this cooling aspect are earlier press iron pressing plate to be cooled off, and then reach the cooling to the wood plank of having answered film, thermal losses is very big, also loses time very much.

Summary of the invention task of the present invention is based on the improvement to above-mentioned patent application disclosed method, and provide a kind of energy-conservation, efficient, product is of fine quality in the method for the multiple film in wood-based plate surface, the wood-based plate of this method indication has furniture, interior decoration, building and industrial sheet material, comprises wooden plywood, bamboo plywood, particieboard, fiberboard etc.; The thermoplastic film of indication has: plastic sheetings such as PVC, PE, HDPE, PP.

Task of the present invention is finished as follows: use two press, one is hot press, one is cold press, at first at the intensive pin hole that mangles in wood-based plate surface, spread the plastic sheeting that to answer then on the pin hole, cover the corrosion resistant plate of certain fineness (or other finished surface) on the film, these wood-based plates, film, corrosion resistant plate lies on the hot press earlier as multiple membrane assembly and heats, pressurization, make the plastic sheeting fusing, and enter pin hole, and the film surface also forms required surface under the corrosion resistant plate extruding, multiple membrane assembly moves on to add on the cold press after hot pressing is finished on the hot press depresses cooling, reach plastics and solidify, film is locked in the wood-based plate surface securely, and obtains required film outward appearance and the wood-based plate dimensionally stable that makes multiple film.

The present invention has compared following progress with above-mentioned patent application disclosed method:

1. energy-conservation.At the direct fusion composite thermoplastic plastic sheeting in wood-based plate surface, because of the thermoplastic film is a thick liquid under heating state, therefore membrane assembly in press, takes out after should cool off again again, in order to avoid the inner remaining gases such as water vapour of Yin Gaowen, decompression wood-based plate overflow, destroy the bond strength of multiple film outward appearance and film and sheet material, and if answered that the wood-based plate plate temperature of film is higher also can to deform in the natural cooling process outside press.Above-mentioned patent application method is with the multiple film of a press, heating, pressurization back will be cooled off the iron pressing plate based on above-mentioned reason, and finally reach cooling to wood-based plate, iron pressing plate quality is tens times of multiple membrane assembly quality such as wood-based plate, and the heat of cooling forfeiture also be we can say tens times that have reached the heat that cools away on the multiple membrane assembly on the iron pressing plate; The present invention is with the multiple film of two press, one is hot press, one is cold press, hot press after hot pressing is finished (iron pressing plate) does not cool off, cool off but a multiple membrane assembly moved on on the cold press, what be cooled like this only is the heat of multiple membrane assembly, and it only is 1/tens of the heat that is cooled on the above-mentioned patent application method press iron pressing plate, therefore we can say the present invention and above-mentioned patent application disclosed method mutually specific energy consumption differ tens times.

When 2. saving.Above-mentioned patent application is with the multiple film of a press, for to every reply membrane assembly heating, cooling, and will the iron pressing plate be heated repeatedly, cool off, but iron pressing plate thermal capacitance is big, is heating or to cool off be not thing once falling, is very time taking.The present invention is with the multiple film of two press, hot press iron pressing plate does not need cooling, what need in fact to do just heats, cools off multiple membrane assembly, because of multiple membrane assembly quality such as wood-based plate only are 1/tens of iron pressing plate, so heating, cool time is a lot of soon, and is apparent, the present invention can make the multiple film cycle of wood-based plate shorten greatly, can shorten to 1/tens of the multiple film cycle of above-mentioned patent application method, this has improved production efficiency greatly.

3. of fine quality.Because of wood-based plate (especially wood plywood) long more in the high following time of temperature, it is obvious more that look becomes, and plate matter is easy more to become fragile, two press carry out hot pressing respectively, cold pressing and shortened wood-based plate greatly stop heated time in hot press, alleviated sheet material look range degree, presentation quality is improved, and has avoided also that sheet material becomes fragile, intensity reduces; And because wood-based plate time of staying in hot press shortens, can also select the higher thermoplastic film of fusing point for use, and not worry the processing temperature height, and influence product appearance and plate intensity, increase product variety.

The specific embodiment is onesize with two, the number of plies is identical, conventional multidaylight press, one is hot press (heater is arranged), one is cold press (cooling device is arranged), laterally parallel near installing, and cold press low relatively (these installation requirement purposes are that convenient multiple membrane assembly moves on to cold press by hot press), use the surface to sand flat (multiple face sands flat) conventional wood-based plate, earlier on will answering the surface of film, sheet material rolls pin hole, aperture 0.3-0.4mm on the pin hole, following aperture 0.05-0.2mm, dark 0.5-1mm, nearly bellmouth, hole center distance (distance anyhow) 2mm * 2mm, pin hole is rolling or with needle plate compacting (specification and the distribution distance of draw point on the roller or on the needle plate with the roller machine that is covered with draw point on the roller, should meet the specification requirement of above-mentioned plate surface pin hole), the plate surface of having rolled pin hole covers above-mentioned a kind of thermoplastic film, thickness is 0.15-0.2mm, pin hole specification (size, the degree of depth, density etc.) the visual sheet material situation of film thickness (material, surface smoothness etc.) appropriateness is adjusted, Kong Yishen is a little for plate surface smoothness difference, thickness is a little, cover corrosion resistant plate on the film, about thickness of slab 0.5mm-1mm, corrosion resistant plate and plastic film contact-making surface should polish, or frosted or be shaped on pattern, and spread the very thin silicone oil of one deck (remover), sheet material, film, the multiple membrane assembly that corrosion resistant plate is combined into is placed on the hot press earlier and heats, pressurization, heating-up temperature is looked used plastics variety and difference, heating-up temperature is respectively: PVC is about 170 ℃, PE is about 165 ℃, HDPE is about 170 ℃, PP is about 190 ℃, with little pressure multiple membrane assembly is compressed earlier before the film melts, pressure can not be too big, be as the criterion with favourable heat transfer, in order to avoid damage pin hole, about 2-3 minute heat time heating time, heating should reach plastic sheeting and fully melt, after treating that plastic sheeting fully melts, intensified pressure pressurization again, moulding pressure reaches 11 kilograms-20 kg/cm, wooden plywood's pressure should be used low, bamboo plywood, particieboard, fiberboard, pressure should be used high.The plastics of fusing are compressed into pin hole, and Rong Hua plastics are squeezed simultaneously, also form the surface (in the afterboarding of colding pressing) of corrosion resistant plate mold pressing effect, and hot pressing is finished multiple membrane assembly and moved on on the cold press and cold pressing, and pressure enough back water flowing cools off.(the multiple membrane assembly of wood-based plate simultaneously to be pressed enters hot press hot pressing again), the pressure of colding pressing should be a bit larger tham the actual used maximum pressure of hot pressing, if (when promptly hot pressing pressure is maximum is 12 kg/cm, the pressure of colding pressing promptly should reach more than 12 kg/cm), and maintain and can not decay, by the time cooling off to drive when reaching 60 ℃ of left and right sides, sheet material presses, open cold press, multiple membrane assembly takes out, multiple lamina membranacea material deburring, classification, warehouse-in.

Because of the two-sided temperature of hot press iron pressing plate is identical, if therefore sheet material is wanted two-sided multiple film, should put into the individual plates compacting by the every pressure layer of press, two-sided multiple film is finished simultaneously; If as long as sheet material is the multiple film of single face, every the pressures layer of suitable press be put into the compacting of two boards material simultaneously, and the two boards consistency from top to bottom is overlapping, last piece plate again face (corrosion resistant plate) up, face (corrosion resistant plate) is down again for following piece plate.

Claims

1. prick the cloth pin hole on wood-based plate surface for one kind, pin hole upper berth thermoplastic film, the corrosion resistant plate that film loam cake Surface Machining is handled, double-pressing machine is in the method for wood-based plate surface fusing thermoplastic plastic film, it is characterized in that multiple membrane assembly heating on hot press, the pressurization earlier that this wood-based plate, plastic foil, corrosion resistant plate are combined into, and then move on to pressurization on the cold press, cooling.

2. according to the method for claim 1 regulation, it is characterized in that wood-based plate comprises wood plywood, bamboo plywood, particieboard, fiberboard.

3. according to the method for claim 1 regulation, it is characterized in that the aperture is 0.3-0.4mm on the pin hole, following aperture is 0.05-0.2mm, is 0.5-1mm deeply, nearly bellmouth.

4. according to the method for claim 1 regulation, it is characterized in that the thermoplastic film has PVC, PE, HDPE, PP plastic sheeting, thick is 0.15-0.2mm.

5. according to the method for claim 1 regulation, corrosion resistant plate and film contact-making surface are polishing, frosted or pattern, and thick is 0.5-1mm.

6. according to the method for claim 1 regulation, hot press uses various plastic sheeting heating-up temperatures to be respectively: PVC is about 170 ℃, and PE is about 165 ℃, and HDPE is 170 ℃, and PP is about 190 ℃.

7. according to the method for claim 1 regulation, it is characterized in that the earlier little pressure heating of hot press, be heated to after plastic sheeting melts fully that intensified pressure reaches the 11-20 kg/cm again.

8. according to the method for claim 1 regulation, it is characterized in that cold press is colded pressing pressure should the actual used maximum pressure of big slightly hot press hot pressing, and remains to about plate temperature drop to 60 ℃.