CN102501506A - PVC (Poly Vinyl Chloride) wood-plastic foaming composite and preparation method thereof - Google Patents
PVC (Poly Vinyl Chloride) wood-plastic foaming composite and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a PVC (Poly Vinyl Chloride) wood-plastic foaming composite and a preparation method of the wood-plastic foaming composite. The PVC wood-plastic foaming composite comprises a PVC wood-plastic foaming base material layer and an ASA (Acrylonitrile Styrene Acrylate) layer which is co-extruded and formed on at least one side of the PVC wood-plastic foaming base material layer, wherein the PVC wood-plastic foaming base material layer comprises the following components in parts by weight: 100 parts of PVC, 50-100 parts of paddings, 1-1.5 parts of coupling agents, 5-7 parts of compound stabilizers, 1.0-1.5 parts of compound foaming agents and 6-8 parts of blowing promoters. The PVC wood-plastic foaming composite disclosed by the invention has the characteristics of light weight, high specific strength, water prevention, corrosion prevention, heat preservation, good weather resistance, low formula cost and low material density, and can be widely used in outdoor product markets such as exterior decoration of buildings, garden landscapes, fences, plank ways and the like.
Description
Technical field
The present invention relates to a kind of PVC Wood-plastic foam composite and preparation method thereof.
Background technology
Wood-plastic material has the double grading of timber and plastics concurrently: mechanical property is good, be not afraid of and damage by worms, mildewproof bacterium, do not absorb moisture, advantage such as can reuse.Application number is the coextrusion forming process that 00132561.2 patent has promptly been put down in writing a kind of plastic-wood section; The shortcoming of this technology is: the density of the profile shapes of wood plastic composite preparation is at 1.1 ~ 1.4g/ cm3; Make the material deadweight than higher; Can't satisfy in light weight, shock resistance, high heat insulation requirement, product cost is high simultaneously, is unfavorable for the marketing of product.
And, mould woodwork at present and be applied to outdoor its main shortcoming and be;
1, dash the whiting of fading easily after drenching through solar radiation, rainwater for a long time, weatherability is poor;
2, lack service life, effect is poor, need regularly whitewash protection, and maintenance cost is high.
Just come people the more to attempt to be applied in the production and processing of outdoor wood plastic product more based on this co-extrusion technology, but the application that wooden co-extrusion product is also moulded influence in the raising of subsidiary product cost.
Summary of the invention
In order to solve the problems of the technologies described above, the present invention provides a kind of PVC Wood-plastic foam composite and preparation method thereof, organically foaming technique and co-extrusion technology is combined, and has promptly realized the reduction product cost, has improved the weatherability of material again.
PVC Wood-plastic foam composite provided by the invention comprises PVC Wood-plastic foam base material and coextrusion mold at said PVC Wood-plastic foam substrate layer ASA layer at least simultaneously, and wherein, said PVC Wood-plastic foam substrate layer comprises the component of following parts by weight:
100 parts of polyvinyl chloride;
50 ~ 100 parts of fillers;
1 ~ 1.5 part of coupling agent;
5 ~ 7 parts of compound stabilizers;
1.0 ~ 1.5 parts of composite foamable agents;
6 ~ 8 parts of blowing promotors.
Preferably, the K value 61 of said polyvinyl chloride, the degree of polymerization are 750 ~ 850; Said filler is one or more any mixture in calcium carbonate, talcum powder or granule or fibrous material rice wheat husk powder, wood chips, bamboo bits, crops tangerine bar powder, beans, cornstarch, cotton shell, nut duricrust or the coconut husk; Said compound stabilizer is one or more any mixture in calcium-zinc composite stabilizing agent or the lead salt compound stabilizer; Said coupling agent is silane coupling agent or aluminium titante coupling agent; Said composite foamable agent contains Celogen Az, sodium acid carbonate and zinc oxide; Said blowing promotor is the multiple copolymer of molecular weight 5,000,000 ~ 6,000,000 esters of acrylic acids.
Wherein, said calcium-zinc composite stabilizing agent contains calcium stearate, zinc stearate, hydrotalcite, Tissuemat E, stearic acid, antioxidant and OPE compound; Said lead salt compound stabilizer contains dibasic Lead Phosphite, lead stearate, tribasic lead sulfate, Tissuemat E, stearic acid, antioxidant and OPE compound.
Preferably, the thickness of said ASA layer is 0.25 ~ 0.45mm, and PVC Wood-plastic foam substrate layer thickness is 5 ~ 50mm.
The present invention provides the method for the above-mentioned PVC Wood-plastic foam composite of preparation: each component of said PVC Wood-plastic foam base material is extruded the Wood-plastic foam melt through extruder and is got into the foaming co-extruding mould after dehumidifying, the mixing that heats up; Said ASA particle gets into the foaming co-extruding mould after extruder is extruded the ASA melt; The composite molding in the foaming co-extruding mould of said Wood-plastic foam melt and said ASA melt, cooling.
Particularly, above-mentioned method comprises the steps:
A. get the filler oven dry of said amount, add the said filler of coupling agent activation, mixture is cooled to room temperature;
B. polyvinyl chloride and the compound stabilizer of getting said amount mix; Stirring is warming up to 90 ~ 95 ℃, adds the blowing promotor of step a gained mixture and said amount then, stirs and is warming up to 100 ~ 105 ℃; The composite foamable agent that adds said amount; Continue stirring and be warming up to 115 ~ 125 ℃, be cooled to then below 40 ℃, obtain foam mixture;
C. the foam mixture that step b is obtained drops in the extruder, and the Wood-plastic foam melt of extruding through extruder gets into the foaming co-extruding mould;
D. get the ASA particulate material and drop in the extruder, the ASA melt of extruding through extruder gets into the described foaming co-extruding mould of step c;
E. the Wood-plastic foam melt of step c and ASA melt composite molding in said foaming co-extruding mould, cooling, cutting promptly gets.
Preferably, the water content of the said compound of step b is below 1%, and bulk density is 0.65 ~ 0.75g/mL.
Wherein, the described foam mixture of step c drops into conical double screw extruder, engine speed 10-15rpm/min.
Wherein, the described ASA particulate material of steps d drops into single screw extrusion machine, engine speed 8-12rpm/min.
Wherein, the said foaming co-extruding mould of step e is releasing pattern progressively, and the die gap multiplication factor is 1.5 ~ 2.5.
PVC Wood-plastic foam composite provided by the invention is behind the thermal forming device heating and melting; In mould, be shaped to a kind of core and have continuously evenly the novel wood-plastic foaming body layer of distribution micropore and the product of surface, can reach following effect through the compound one of ASA surface layer of the densification of co-extrusion formation:
1, PVC Wood-plastic foam composite has the characteristics of light weight, specific strength height, waterproof, anticorrosion, insulation, and the processing characteristic that has timber can follow closely, can saw, can dig.
2, this PVC Wood-plastic foam composite has high weatherability, can be widely used in outdoor goods markets such as building external decoration, garden landscape, fence plank road.
3, this PVC Wood-plastic foam composite has the distinguishing feature that formulation cost is low, density of material is low, can significantly reduce the comprehensive cost of product.
The specific embodiment
Below in conjunction with specific embodiment the present invention is described further so that those skilled in the art can better understand the present invention and implementing, but the embodiment that lifts not conduct to qualification of the present invention.
PVC Wood-plastic foam composite provided by the invention; Comprise PVC Wood-plastic foam substrate layer and coextrusion mold ASA (propylene fine-acrylic acid ester-styrene copolymer) layer in the one side at least of said PVC Wood-plastic foam substrate layer; (promptly; The single face of PVC Wood-plastic foam substrate layer or two-sided up and down coextrusion mold have the ASA layer), wherein, said PVC Wood-plastic foam substrate layer comprises the component of following parts by weight:
100 parts of polyvinyl chloride;
50 ~ 100 parts of fillers;
1 ~ 1.5 part of coupling agent;
5 ~ 7 parts of compound stabilizers;
1.0 ~ 1.5 parts of composite foamable agents;
6 ~ 8 parts of blowing promotors.
Wherein, preferably, the K value 61 of said polyvinyl chloride, the degree of polymerization are 750 ~ 850.
Said filler is not done special qualification, can be one or more any mixture in calcium carbonate, talcum powder or granule or fibrous material rice wheat husk powder, wood chips, bamboo bits, crops tangerine bar powder, beans, cornstarch, cotton shell, nut duricrust or the coconut husk.
Said compound stabilizer can be one or more any mixture in PVC calcium-zinc composite stabilizing agent or the lead salt compound stabilizer.Commercially available the getting of said PVC calcium-zinc composite stabilizing agent contained calcium stearate, zinc stearate, hydrotalcite, Tissuemat E, stearic acid, antioxidant and OPE compound in the composition; Commercially available the getting of said lead salt compound stabilizer contained dibasic Lead Phosphite, lead stearate, tribasic lead sulfate, Tissuemat E, stearic acid, antioxidant and OPE compound in the composition.
Said coupling agent is not done special qualification, can be silane coupling agent or aluminium titante coupling agent;
Said composite foamable agent is commercially available to be got, and contains Celogen Az, sodium acid carbonate and zinc oxide etc. in the composition.
Said blowing promotor is the multiple copolymer of molecular weight 5,000,000 ~ 6,000,000 esters of acrylic acids.
The thickness of ASA layer is 0.25 ~ 0.45mm, and PVC Wood-plastic foam substrate layer thickness is 5 ~ 50mm.
The processing and forming technology of this PVC Wood-plastic foam co-extrusion section bar is:
A, filler is added in the high speed mixing roll, under 110-120 ℃ of temperature, filler was dried 8-10 minute, added coupling agent activation filler again 5 minutes, enter cold mixing and be cooled to room temperature, it is subsequent use to discharge cold mixed back.
B, startup height mix and PVC that measures (100Kg) and compound stabilizer is mixed through feeding system input height; After high-speed stirred is warming up to 90 ~ 95 ℃ with material activated filler (50 ~ 100 Kg) and blowing promotor are added high mixing simultaneously and add composite foamable agent after continuing to be mixed to 100 ~ 105 ℃; Continue to be mixed to 115 ~ 125 ℃ and enter cold mixing; After compound enters cold mixing, when fully being cooled to below 40 ℃, become foam mixture but enter truck through stirring.
Foam mixture requires: outward appearance: be uniformly dispersed, color and luster is consistent, does not have phenomenons such as conglomeration, variable color.Water content: water content should be controlled at below 1%.
Bulk density: the bulk density of compound should be controlled at 0.65 ~ 0.75g/mL.
C, this compound is dropped in conical double screw extruder hopper, extrude the Wood-plastic foam melt through extruder and get into the foaming co-extruding mould.
D, the ASA particulate material is added in single screw rod hopper, extrude the ASA melt through extruder and get into the foaming co-extruding mould.
E, PVC Wood-plastic foam melt and ASA melt get into same foaming co-extruding mould by different runners respectively, and in specially designed co-extruding mould, carry out composite molding.
After f, the extrusion molding in the cooling and shaping mould cooling and shaping, obtain product through traction, cutting again.
Should be noted that in the technology: foaming mould is releasing pattern progressively; The die gap multiplication factor can be 1.5 ~ 2.5 times, and according to different foaming floor desired density decision burst size, the extrusion foaming material is through the cooling and shaping sync pulling; Customized cut-off becomes required size, and expanded material density is at 0.6-0.7g/cm
3Between.
Embodiment 1
PVC Wood-plastic foam substrate layer raw material:
100 parts of polyvinyl chloride;
50 parts of wood powders;
1.0 parts of coupling agents (silane coupling agent);
5 parts of compound stabilizers (PVC calcium-zinc composite stabilizing agent);
1.0 parts of composite foamable agents;
6 parts of blowing promotors.
A, wood powder is added in the high speed mixing roll, under 110-120 ℃ of temperature, wood powder was dried 8-10 minute, added coupling agent activation wood powder again 5 minutes, enter cold mixing and be cooled to room temperature, it is subsequent use to discharge cold mixed back.
B, startup height mix and PVC that measures (100Kg) and compound stabilizer is mixed through feeding system input height; After high-speed stirred is warming up to 90 ~ 95 ℃ with material activated wood powder (50 Kg) and blowing promotor are added high mixing simultaneously and add composite foamable agent after continuing to be mixed to 100 ~ 105 ℃; Continue to be mixed to 115 ~ 125 ℃ and enter cold mixing; After compound enters cold mixing, when fully being cooled to below 40 ℃, become foam mixture but enter truck through stirring.
Foam mixture requires: outward appearance: be uniformly dispersed, color and luster is consistent, does not have phenomenons such as conglomeration, variable color.Water content: water content should be controlled at below 1%.
Bulk density: the bulk density of compound should be controlled at 0.65 ~ 0.75g/mL.
C, this compound is dropped in Φ 65/132 conical double screw extruder.Extrude the Wood-plastic foam melt through extruder and get into the foaming co-extruding mould.
Heating-up temperature is: 165 ℃ in a district, 170 ℃ in two districts, 175 ℃ in three districts, 180 ℃ in four districts, 170 ℃ of merging cores, 180 ℃ of heads
Melt pressure 12-15Mpa;
Melt temperature 165-170 ℃;
Engine speed 10-15rpm/min.
D, the ASA particulate material is added in single screw rod hopper, extrude the ASA melt through extruder and get into the foaming co-extruding mould
Heating-up temperature is: 165 ℃ in a district, 175 ℃ in two districts, 185 ℃ in three districts, 180 ℃ of merging cores, 190 ℃ of heads, engine speed 8 ~ 12 rpm/min.
E, PVC Wood-plastic foam melt and ASA melt get into 26 plates foaming co-extruding mould by separately runner respectively, and in co-extruding mould, carry out composite molding.
After f, the extrusion molding in the cooling and shaping mould cooling and shaping, be shaped to distribute continuously evenly Wood-plastic foam co-extrusion 26 plates of foaming micropore of band, obtain product through traction, cutting again.
The equal coextrusion mold of upper and lower surfaces of the PVC Wood-plastic foam substrate layer of products obtained therefrom has the ASA layer, and the ASA layer thickness is 0.25 ~ 0.45mm, PVC Wood-plastic foam substrate layer thickness 26mm, and the heavy 2.35-2.45kg/m of product rice, density is 0.65-0.70 g/cm
3Through measuring, the physical property of product is following:
Nail-holding ability plate face 1780N;
Edges of boards 1620N;
0 of low temperature drop impact;
Surface abrasion resistance 0.072g/100r;
Thermal coefficient of expansion 1.54 * 10
-5
Oxygen index (OI) 29;
Thermal conductivity factor 0.062W/ (m.k);
1000 hours aging Δ E 0.62.
Embodiment 2
PVC Wood-plastic foam substrate layer raw material:
100 parts of polyvinyl chloride;
75 parts of wood powders;
1.25 parts of coupling agents (aluminium titante coupling agent);
6 parts of compound stabilizers (PVC calcium-zinc composite stabilizing agent);
1.25 parts of composite foamable agents;
7 parts of blowing promotors.
A, wood powder is added in the high speed mixing roll, under 110-120 ℃ of temperature, wood powder was dried 8-10 minute, added coupling agent activation wood powder again 5 minutes, enter cold mixing and be cooled to room temperature, it is subsequent use to discharge cold mixed back.
B, startup height mix and PVC that measures (100Kg) and compound stabilizer is mixed through feeding system input height; After high-speed stirred is warming up to 90 ~ 95 ℃ with material activated wood powder (75 Kg) and blowing promotor are added high mixing simultaneously and add composite foamable agent after continuing to be mixed to 100 ~ 105 ℃; Continue to be mixed to 115 ~ 125 ℃ and enter cold mixing; After compound enters cold mixing, when fully being cooled to below 40 ℃, become foam mixture but enter truck through stirring.
Foam mixture requires: outward appearance: be uniformly dispersed, color and luster is consistent, does not have phenomenons such as conglomeration, variable color.Water content: water content should be controlled at below 1%.
Bulk density: the bulk density of compound should be controlled at 0.65 ~ 0.75g/mL.
C, this compound is dropped in Φ 65/132 conical double screw extruder.Extrude the Wood-plastic foam melt through extruder and get into the foaming co-extruding mould.
Heating-up temperature is: 165 ℃ in a district, 170 ℃ in two districts, 175 ℃ in three districts, 180 ℃ in four districts, 170 ℃ of merging cores, 180 ℃ of heads
Melt pressure 12-15Mpa;
Melt temperature 165-170 ℃;
Engine speed 10-15rpm/min.
D, the ASA particulate material is added in single screw rod hopper, extrude the ASA melt through extruder and get into the foaming co-extruding mould
Heating-up temperature is: 165 ℃ in a district, 175 ℃ in two districts, 185 ℃ in three districts, 180 ℃ of merging cores, and 190 ℃ of heads, engine speed 6 ~ 8 changes.
E, PVC Wood-plastic foam melt and ASA melt get into chair batten foaming co-extruding mould by separately runner respectively, and in co-extruding mould, carry out composite molding.
After f, the extrusion molding in the cooling and shaping mould cooling and shaping, be shaped to distribute the continuously evenly Wood-plastic foam co-extrusion chair bar of foaming micropore of band, obtain product through traction, cutting again.
The equal coextrusion mold of upper and lower surfaces of the PVC Wood-plastic foam substrate layer of products obtained therefrom has the ASA layer, and the ASA layer thickness is 0.25 ~ 0.45mm, PVC Wood-plastic foam substrate layer thickness 25.4mm, and product rice weighs 1.45 ~ 1.50kg/m, and density is 0.65 ~ 0.70 g/cm
3Through measuring, the physical property of product is following:
Nail-holding ability plate face 1780N;
Edges of boards 1620N;
0 of low temperature drop impact;
Surface abrasion resistance 0.072g/100r;
Thermal coefficient of expansion 1.54 * 10
-5
Oxygen index (OI) 29;
Thermal conductivity factor 0.062W/ (m.k);
1000 hours aging Δ E 0.62.
Embodiment 3
PVC Wood-plastic foam substrate layer raw material:
100 parts of polyvinyl chloride;
100 parts of wood powders;
1.5 parts of coupling agents (silane coupling agent);
7 parts of compound stabilizers (lead salt compound stabilizer);
1.5 parts of composite foamable agents;
8 parts of blowing promotors.
A, wood powder is added in the high speed mixing roll, under 110-120 ℃ of temperature, wood powder was dried 8-10 minute, added coupling agent activation wood powder again 5 minutes, enter cold mixing and be cooled to room temperature, it is subsequent use to discharge cold mixed back.
B, startup height mix and PVC that measures (100Kg) and compound stabilizer is mixed through feeding system input height; After high-speed stirred is warming up to 90 ℃ with material activated wood powder (100 Kg) and blowing promotor are added high mixing simultaneously and add composite foamable agent after continuing to be mixed to 100 ~ 110 ℃; Continue to be mixed to 115--125 ℃ and enter cold mixing; After compound enters cold mixing, when fully being cooled to below 40 ℃, become foam mixture but enter truck through stirring.
C, this compound is dropped in Φ 65/132 conical double screw extruder.Extrude the Wood-plastic foam melt through extruder and get into the foaming co-extruding mould.
Heating-up temperature is: 165 ℃ in a district, 170 ℃ in two districts, 175 ℃ in three districts, 180 ℃ in four districts, 170 ℃ of merging cores, 180 ℃ of heads
Melt pressure 12-15Mpa;
Melt temperature 165-170 ℃;
Engine speed 10-15rpm/min.
D, the ASA particulate material is added in single screw rod hopper, extrude the ASA melt through extruder and get into the foaming co-extruding mould.
Heating-up temperature is: 165 ℃ in a district, 175 ℃ in two districts, 185 ℃ in three districts, 180 ℃ of merging cores, 190 ℃ of heads, engine speed 6 ~ 8 rpm/min.
E, PVC Wood-plastic foam melt and ASA melt get into shiplap lagging wallboard foaming co-extruding mould by separately runner respectively, and in co-extruding mould, carry out composite molding.
After f, the extrusion molding in the cooling and shaping mould cooling and shaping, be shaped to distribute the continuously evenly Wood-plastic foam co-extrusion shiplap lagging wall panels of foaming micropore of band, obtain product through traction, cutting again.
The upper surface coextrusion mold of the PVC Wood-plastic foam substrate layer of products obtained therefrom has the ASA layer, and the ASA layer thickness is 0.25 ~ 0.45mm, PVC Wood-plastic foam substrate layer thickness 12mm, and the heavy 1.15-1.20 kg/m of product rice, density is 0.65 ~ 0.75 g/cm
3Through measuring, the physical property of product is following, basic physical property:
Nail-holding ability plate face 1780N;
Edges of boards 1620N;
0 of low temperature drop impact;
Surface abrasion resistance 0.072g/100r;
Thermal coefficient of expansion 1.54 * 10
-5
Combustibility B1 level;
Thermal conductivity factor 0.062W/ (m.k);
1000 hours aging Δ E 0.62.
The above embodiment is the preferred embodiment that proves absolutely that the present invention lifts, and protection scope of the present invention is not limited thereto.Being equal to that the technical staff in present technique field is done on basis of the present invention substitutes or conversion, all within protection scope of the present invention.Protection scope of the present invention is as the criterion with claims.
Claims (10)
1. a PVC Wood-plastic foam composite is characterized in that, comprises PVC Wood-plastic foam substrate layer and the coextrusion mold ASA layer of one side at least at said PVC Wood-plastic foam substrate layer, and wherein, said PVC Wood-plastic foam substrate layer comprises the component of following parts by weight:
100 parts of polyvinyl chloride;
50 ~ 100 parts of fillers;
1 ~ 1.5 part of coupling agent;
5 ~ 7 parts of compound stabilizers;
1.0 ~ 1.5 parts of composite foamable agents;
6 ~ 8 parts of blowing promotors.
2. PVC Wood-plastic foam composite according to claim 1 is characterized in that the K value 61 of said polyvinyl chloride, the degree of polymerization are 750 ~ 850; Said filler is one or more any mixture in calcium carbonate, talcum powder or granule or fibrous material rice wheat husk powder, wood chips, bamboo bits, crops tangerine bar powder, beans, cornstarch, cotton shell, nut duricrust or the coconut husk; Said compound stabilizer is one or more any mixture in PVC calcium-zinc composite stabilizing agent or the lead salt compound stabilizer; Said coupling agent is silane coupling agent or aluminium titante coupling agent; Said composite foamable agent contains Celogen Az, sodium acid carbonate and zinc oxide; Said blowing promotor is the multiple copolymer of molecular weight 5,000,000 ~ 6,000,000 esters of acrylic acids.
3. PVC Wood-plastic foam composite according to claim 2 is characterized in that said calcium-zinc composite stabilizing agent contains calcium stearate, zinc stearate, hydrotalcite, Tissuemat E, stearic acid, antioxidant and OPE compound; Said lead salt compound stabilizer contains dibasic Lead Phosphite, lead stearate, tribasic lead sulfate, Tissuemat E, stearic acid, antioxidant and OPE compound.
4. PVC Wood-plastic foam composite according to claim 1 is characterized in that the thickness of said ASA layer is 0.25 ~ 0.45mm, and PVC Wood-plastic foam substrate layer thickness is 5 ~ 50mm.
5. prepare the method for each described PVC Wood-plastic foam composite of claim 1 ~ 4, it is characterized in that, each component of said PVC Wood-plastic foam substrate layer is extruded the Wood-plastic foam melt through extruder and is got into the foaming co-extruding mould after dehumidifying, the mixing that heats up; Said ASA particle gets into the foaming co-extruding mould after extruder is extruded the ASA melt; The composite molding in the foaming co-extruding mould of said Wood-plastic foam melt and said ASA melt, cooling.
6. method according to claim 5 is characterized in that, comprises the steps:
Get the filler oven dry of said amount, add the said filler of coupling agent activation, mixture is cooled to room temperature;
Polyvinyl chloride and the compound stabilizer of getting said amount mix; Stirring is warming up to 90 ~ 95 ℃, adds the blowing promotor of step a gained mixture and said amount then, stirs and is warming up to 100 ~ 105 ℃; The composite foamable agent that adds said amount; Continue stirring and be warming up to 115 ~ 125 ℃, be cooled to then below 40 ℃, obtain foam mixture;
The foam mixture that step b is obtained drops in the extruder, and the Wood-plastic foam melt of extruding through extruder gets into the foaming co-extruding mould;
Get the ASA particulate material and drop in the extruder, the ASA melt of extruding through extruder gets into the described foaming co-extruding mould of step c;
The Wood-plastic foam melt of step c and the composite molding in said foaming co-extruding mould of the ASA melt of steps d, cooling, cutting promptly gets.
7. method according to claim 5 is characterized in that, the water content of the said foam mixture of step b is below 1%, and bulk density is 0.65 ~ 0.75g/mL.
8. method according to claim 5 is characterized in that, the described foam mixture of step c drops into conical double screw extruder, engine speed 10-15rpm/min.
9. method according to claim 8 is characterized in that, the described ASA particulate material of steps d drops into single screw extrusion machine, engine speed 8-12rpm/min.
10. method according to claim 5 is characterized in that, the said foaming co-extruding mould of step e is releasing pattern progressively, and the die gap multiplication factor is 1.5 ~ 2.5.
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| WO2018133188A1 (en) * | 2017-01-23 | 2018-07-26 | 浙江晶通塑胶有限公司 | Composite floor and manufacturing method thereof |
| WO2018213086A1 (en) * | 2017-05-16 | 2018-11-22 | Wellmade Floor Covering Int'l Inc. | Engineered plank and its manufacturing method |
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Effective date of registration: 20180130 Address after: 101109 Beijing city Tongzhou District town Huoxian Kuo Xing four Street No. 1 Patentee after: Beijing ONYX New Material Co.,Ltd. Address before: 100021 Beijing city Tongzhou District town Huoxian Kuo Xing four Street No. 1 Patentee before: Beijing Ownic Environment Protection Technology Co.,Ltd. |