CN1185284C

CN1185284C - Method for producing wood-imitating plastic plate

Info

Publication number: CN1185284C
Application number: CNB991126335A
Authority: CN
Inventors: 陈家璋
Original assignee: QIAOFENG CARPENTERY CO Ltd DALIAN
Current assignee: QIAOFENG CARPENTERY CO Ltd DALIAN
Priority date: 1999-01-16
Filing date: 1999-01-16
Publication date: 2005-01-19
Anticipated expiration: 2019-01-16
Also published as: CN1261609A

Abstract

The present invention relates to a method for making a wood-imitating plastic plate, which solves the problem that a plastic plate produced by the present making method has poorer physical properties and processing characteristics than those of true wood. Polystyrene is used as base materials to which an amount of ABS resin, high-impact polystyrene and a foaming agent are added, and the mixture is mixed and stirred for standby; the mixture is made into a finished product through a melting and extruding step, a foaming and shaping step and a cutting step. The wood-imitating plastic plate made by the method has wood grains and characteristics of the true wood and low cost.

Description

The manufacture method of wood-imitating plastic plate

(1) technical field:

The present invention is a kind of manufacture method of wood-imitating plastic plate.

(2) background technology:

Timber is as natural resource, it is human maximum material that uses, because the use of a large amount of timber, caused the tropical rain forest area to reduce rapidly, except that making timber day by day become the expensive material, ball ecological environment is also caused serious destruction, but because wood quality characteristic, and be subjected to common people to like its texture for a long time deeply, be difficult to other materials and substitute, so the timber demand amount does not reduce so far yet, its reason, as the article that plastics or other material are made, difficulty has the fiber properties and the texture of timber, can be made into the plastic sheet of imitative wood grain as the technology of " production of plastic material with wood grain " invented, only has the visual effect that the plastic cement surface presents similar wood grain, its internal structure is identical with general plastic sheet, there is no the fibrous tissue characteristic of similar truewood, so on its physical properties and the processing characteristics, greatly differ from each other with truewood, and, on material, do not copy truewood in the lump, so the fiber texture of truewood still is short of on its plastic sheet surface because this technology is the simple colouring problem that solves.Another kind of for to make plastic sheet be called Homogenholz through foaming with most holes tissue with plastics, still be confined to the foaming of unitary plastic, though have the formed hole of foaming tissue, but still owe due fiber properties of truewood and texture, it only is nothing but the higher spongy tissue of hardness, the yet difficult characteristic that similar truewood light weight is arranged is not generally used so far yet.

So the material characteristic of truewood mainly is being made up of countless elongated fibers, then be full of capillary channel therebetween, its transverse section of capillary channel is the about 0.2～0.3mm of diameter hole, make timber have the characteristic of light weight, cooperate the mutual fiber yarn that twines, then make timber have appropriate toughness, and the nail body space that fiber is pushed when hammering into is provided, makes timber be difficult for breaking, particularly, the material characteristic of timber, the fiber yarn that tangles for its majority and be full of therebetween the tissue that capillary channel constituted.

(3) summary of the invention:

The objective of the invention is to solve above-mentioned existing in prior technology problem, a kind of manufacture method of wood-imitating plastic plate is provided.

The present invention is achieved in that and comprises material preparation step 1, and fusion step 2 and foaming and setting step 3 are with cutting step 4; Material preparation step 1: by weight, 85% polystyrene, 3% ABS resin, 12% high impact polystyrene, and micro-whipping agent, imitative wooden background color colorant and imitative wood grain color colorant, wherein, the foaming starting point of whipping agent 16 is 80～90 ℃;

Melt extrude step 2:

Be admitted in the extrusion shaping machine through material preparation step 1 made stand-by material, through whole process heat make the material fusion after, be extruded with 180～200 ℃ at the forcing machine discharge port.

Foaming and setting step 3: the mixture that is extruded by the extrusion shaping machine discharge port is imported into a pattern immediately, make the fused mixture be moulded continuous plate body, this pattern is provided with and imports refrigerated water or water quench device, making the plate body cooling is 160～180 ℃, import a foaming mould subsequently, this foaming mould has the mould road that amplifies gradually, so that the continuous plate body that passes through gradually foaming and intumescing to being slightly larger than the finished product sectional dimension continuous sheet material that foamed, and the foaming mould is provided with refrigerating unit equally, so that the continuous sheet material cooling of the foaming of mould road outlet is for about 140 ℃, the continuous sheet material of foaming through the foaming mould imports a vacuum mold subsequently, this vacuum mold has vacuum suction device, with extracting by the continuous plastic surface detail of the foaming microbubble in it, so that plastic smooth surface, this vacuum mold has refrigerating unit equally, makes the continuous plastic of foaming that passes through continue to be cooled to about 90 ℃.Be imported into subsequently in the pattern, be cooled to below the blowing temperature and stop foaming fully, form the continuous sheet material of wood-imitating plastic of a sectional dimension and fixed in shape by the set refrigerating unit of this mould continuous plastic that will foam.

Cutting step 4:

Through the continuous sheet material of wood-imitating plastic of foaming and setting step 4 processing gained, according to the institute's palpus length section of cutting into shape wood-imitating plastic plate, make finished product through clipper.

The invention has the advantages that, because the plastics of hydro carbons and resene can't fuse fully behind melt foaming and connect airtight, present adhesion and still peelable shape, cooperate extrude crowded to stretch effect, tangle bonding mutually with elongated condition to each other, be formed with fibrous tissue state as truewood, and select the resin of temperature for use a little more than hydro carbons, make resin be later than the polystyrene fusion, then more can guarantee the formation of this fibrous tissue state, and the different color and lusters caught respectively of hydrocarbon plastic and resene plastics, also can be in company with the Fiber Distribution form of hydrocarbon plastic and resin and plastic and with presenting, and because hydro carbons institute usage ratio greater than resene, therefore can be presented the form of wood grain by the formed Fiber Distribution of resene plastics.

Because the synthetic materials that synthetic materials uses whipping agent to make has the density of similar truewood, the present invention uses the whipping agent foaming to have singularity, by blended characteristic fully not behind hydrocarbon plastic and the resin melt plastics melt foaming, make the fiber that formation is made of hydro carbons and resene plastics respectively on the wood-imitating plastic plate, formed pore foams, can be full of between fiber, the wood-imitating plastic plate that the present invention is made has following extremely near the processing characteristics of truewood:

A, the present invention has the high impact polystyrene of interpolation to improve the toughness of polystyrene, and the good shock-resistance of ABS resin tool, high impact polystyrene and polystyrene can be fully fused after fusion, become and have the flexible base material, and after forming the fibrous tissue state with ABS resin, suitable toughness is all arranged each other, when wood-imitating plastic plate hammers into body, fiber no matter ABS resin constitutes or the fiber that constitutes by polystyrene, by its toughness that has and space that most pore provided, and can be followed closely body extruding flexural deformation, and can not impacted by the nail body and rupture, situation is as truewood.

B, because ABS resin and polystyrene, fibrous tissue that high impact polystyrene constituted have appropriate toughness, the extruding space that cooperates most pore to provide, wood-imitating plastic plate of the present invention can be connected as truewood each other, and have closely knit junction surface.

C, owing to have ABS resin and polystyrene, fibrous tissue that high impact polystyrene constituted, therefore wood-imitating plastic plate of the present invention, can as the truewood along the fiber direction planing operation.

(4) description of drawings:

Fig. 1 is the schema of feasible embodiment of the present invention;

Fig. 2 is the employed foaming and setting wooden model of a foaming and setting tool layout diagram;

(5) embodiment:

Describe in detail below in conjunction with accompanying drawing:

Fig. 1 is the schema of the most preferred embodiment of manufacture method of the present invention, and as shown in the figure, the present embodiment step comprises material preparation step 1, and fusion step 2 and foaming and setting step 3 are with processes such as cutting steps 4; By weight, the composition of this embodiment comprises the ABS resin 12 of 85% polystyrene 11,3% and 12% high impact polystyrene 13, and trace is swept the imitative wooden background color colorant 14 and imitative wood grain color colorant 15 of infusion 16 and trace, wherein, the foaming starting point of whipping agent 16 is 80～90 ℃; 12 of ABS resin select for use melt temperature then to be higher than polystyrene 11.

Material preparation step 1:

Select hydro carbons and resene mixing of materials for use, wherein hydrocarbon material is selected polystyrene 11 and high impact polystyrene 13 for use, and the resene material is then selected ABS resin 12 for use; Behind polystyrene 11 and the colorant 14 that adds imitative wooden background color, through mixing machine heat, melting mixing makes the particulate state background color plastics 111 with imitative wooden background color; 12 colorants 15 that add imitative wood grain color of ABS resin, and same through the mixing particulate state wood grain plastics 121 made from imitative wood grain color; 121 in ready-formed background color plastics 111 and wood grain plastics are puddled operation 17 with high impact polystyrene 13 and whipping agent 16, and making each other, thorough mixing becomes stand-by plastics 18.High impact polystyrene 13 is selected the product specification HP9450 of Chinese platform chemical fibre Wei Stocks Trading Co company limited for use.

Melt extrude step 2:

Be admitted in the extrusion shaping machine through material preparation step 1 made stand-by material 18, through whole process heat make stand-by plastics 18 fusions after, what forcing machine discharge port is extruded with 180～200 ℃.

Foaming and setting step 3:

See Fig. 2, the mixed plastic that is extruded by the extrusion shaping machine discharge port is imported into a pattern 31 immediately, make the fused mixture be moulded continuous idiosome 51, this pattern 31 is provided with and imports refrigerated water or water quench device 311, making idiosome 51 coolings that are moulded is 160～180 ℃, idiosome 51 imports a foaming mould 32 subsequently continuously, this foaming mould 32 has the mould road 322 that amplifies gradually, so that the continuous idiosome 51 that passes through gradually foaming and intumescing to being slightly larger than the finished product sectional dimension continuous plastic 52 that foamed, and foaming mould 32 is provided with refrigerating unit 321 equally, so that continuous plastic 52 coolings of the foaming of mould road 321 outlets are for about 140 ℃, the continuous plastic 52 of foaming through foaming mould 32 imports a vacuum mold 33 subsequently, this vacuum mold 33 has vacuum suction device 332, with extracting by the continuous plastic 52 surface detail microbubbles of the foaming in it, so that the plastic smooth surface, this vacuum mold 33 has refrigerating unit 331 equally, makes the continuous plastic 52 of the foaming of passing through continue to be cooled to about 90 ℃.Be imported into subsequently in the stock mould 34, by the set refrigerating unit 341 of this mould, it is following and stop foaming fully that the continuous plastic 52 that will foam is cooled to blowing temperature, forms the continuous sheet material 53 of wood-imitating plastic of a sectional dimension and fixed in shape.

Cutting step 4:

Through the continuous sheet material of wood-imitating plastic of foaming and setting step 4 processing gained, as shown in Figure 1, according to the institute's palpus length section of cutting into shape wood-imitating plastic plate, make finished product through clipper.

With reference to figure number:

1, material preparation step: 11 polystyrene (Polystyrene), 12 ABS resin (ABSRresine), 13 high impact polystyrene (High iimpactpoly styrol), 14 imitative wooden background color colorant 15 imitative wood grain look colorant 16 whipping agents 17 are puddled 18 stand-by plastics

2, melt extrude step

3, foaming and setting step: 31 patterns, 311 refrigerating units, 32 foaming moulds, 311 refrigerating units, 322 flat die roads, 33 vacuum mold, 331 refrigerating units, 332 vacuum suction devices, 34 stock moulds, 341 refrigerating units

4, cutting step

5, wood-imitating plastic plate: the 51 continuous plate bodys 52 continuous sheet material of continuous sheet material 53 wood-imitating plastics that foamed.

Claims

1, a kind of manufacture method of wood-imitating plastic plate comprises material preparation step 1, and fusion step 2 and foaming and setting step 3 are with cutting step 4; It is characterized in that:

Material preparation step 1:

By weight, 85% polystyrene, 3% ABS resin, 12% high impact polystyrene, and micro-whipping agent, imitative wooden background color colorant and imitative wood grain color colorant, wherein, the foaming starting point of whipping agent 16 is 80～90 ℃;

Melt extrude step 2:

Be admitted in the extrusion shaping machine through material preparation step 1 made stand-by material, through whole process heat make the material fusion after, be extruded with 180～200 ℃ at the forcing machine discharge port;

Foaming and setting step 3:

The mixture that is extruded by the extrusion shaping machine discharge port is imported into a pattern immediately, make the fused mixture be moulded continuous plate body, this pattern is provided with and imports refrigerated water or water quench device, making the plate body cooling is 160～180 ℃, import a foaming mould subsequently, this foaming mould has the mould road that amplifies gradually, so that the continuous plate body that passes through gradually foaming and intumescing to being slightly larger than the finished product sectional dimension continuous sheet material that foamed, and the foaming mould is provided with refrigerating unit equally, so that the continuous sheet material cooling of the foaming of mould road outlet is for about 140 ℃, the continuous sheet material of foaming through the foaming mould imports a vacuum mold subsequently, this vacuum mold has vacuum suction device, with extracting by the continuous plastic surface detail of the foaming microbubble in it, so that plastic smooth surface, this vacuum mold has refrigerating unit equally, makes the continuous plastic of foaming that passes through continue to be cooled to about 90 ℃; Be imported into subsequently in the pattern, be cooled to below the blowing temperature and stop foaming fully, form the continuous sheet material of wood-imitating plastic of a sectional dimension and fixed in shape by the set refrigerating unit of this mould continuous plastic that will foam.