CN102962973A - Method for forming wood plastic section bars with polyvinyl chloride (PVC) cladding layer and extrusion mould - Google Patents
Method for forming wood plastic section bars with polyvinyl chloride (PVC) cladding layer and extrusion mould Download PDFInfo
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- CN102962973A CN102962973A CN2012104932415A CN201210493241A CN102962973A CN 102962973 A CN102962973 A CN 102962973A CN 2012104932415 A CN2012104932415 A CN 2012104932415A CN 201210493241 A CN201210493241 A CN 201210493241A CN 102962973 A CN102962973 A CN 102962973A
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Abstract
The invention relates to a method for forming wood plastic section bars with polyvinyl chloride (PVC) cladding layer and an extrusion mould. The method comprises the following steps of: adding a wood plastic base material into an extrusion mould from a mould head feeding port; extruding the wood plastic base material toward a mould outlet by a main flow channel after the wood plastic base material is added into the extrusion mould; adding PVC powder from a co-extrusion material flow channel charging port of the extrusion mould when the wood plastic base material is extruded to a section bar base material forming area; and extruding the mixed base material from a mould outlet after the added PVC powder and the wood plastic base material are mixed at an outer wall pre-forming flow channel so as to obtain the wood plastic section bars with the PVC cladding layer. By the method and the equipment, the wood plastic door/window main section bars with the PVC cladding layer can be manufactured, and the main section bars have the advantages of environment friendliness, resolvability and low cost; and the manufactured wood plastic door/window main section bars are environment-friendly and can preserve the advantages of attractiveness, anti-aging and the like of the conventional PVC section bars.
Description
Technical field
The present invention relates to a kind of forming method and extrusion die thereof of Wood-plastic profiles of the PVC of having clad, especially a kind of forming method of the wood-plastic door window principal mode material with PVC clad and realize the extrusion die of the method.
Background technology
The section bar of plastic door-window mainly is to be made by PVC, but the PVC powder derives from oil product, belong to non-renewable resources, in order better to bring into play the power savings advantages of plastic door-window, people wish to replace by the recycling to waste and old raw material the PVC powder, therefore and wood plastic composite is exactly a kind of good material, replaces the PVC powder to refer on the principal mode material of door and window with Wood-plastic material and can reduce material cost.But in practice process, consider the attractive in appearance of door and window principal mode material outer surface, usually a small amount of PVC powder is coated on the Wood-plastic material surface, so just can makes door and window principal mode material in the advantage such as attractive in appearance and anti-aging that keeps that conventional P VC section bar has, have again with low cost, good energy-conserving effect, the advantage of environmental protection more.
In order to make the Wood-plastic profiles with PVC clad, need to use mould with two kinds of different material co-extrusions.Existing extrusion die is CN201010570918.10 and CN201010572539.40 for example, the homogeneous raw material co-extrusion that is that these two kinds of extrusion dies are realized is PVC and PVC co-extrusion, and can't realize the co-extrusion of different materials, need to design a kind of forming method and extrusion die thereof of Wood-plastic profiles of the PVC of having clad for this reason.
Summary of the invention
The forming method that the purpose of this invention is to provide a kind of Wood-plastic profiles of the PVC of having clad designs a kind of extrusion die be used to realizing this method simultaneously.
Method of the present invention comprises the steps:
Wood is moulded base-material add extrusion die from die inlet;
Wood is moulded base-material and is added behind the extrusion die wood and mould base-material and push to the mould outlet direction by sprue;
When wood is moulded base-material and is squeezed to section bar base-material forming area the co-extrusion material runner feeding mouth of PVC powder from extrusion die added;
PVC powder to be added and wood are moulded base-material and are moulded at outer wall preformed runner place and wood and extrude from mould outlet after base-material merges, and namely get the Wood-plastic profiles with PVC clad.
The present invention realizes the extrusion die of said method, and this extrusion die comprises die inlet and sprue, and this extrusion die also comprises compressive plate, preformed board, the first profiled sheeting, the second profiled sheeting that is connected successively;
Be fixed with the core spreader in the described sprue, described core spreader central authorities are provided with the inner rib sprue that is connected with sprue, one end of described core spreader is fixed with to be inserted, the muscle forming area in the section bar that central authorities are provided with inner rib sprue is connected of inserting, described preformed board central authorities are provided with the section bar base-material forming area that is connected with sprue;
The central authorities of described the first profiled sheeting, the second profiled sheeting are provided with the outer wall preformed runner that is connected with section bar base-material forming area;
Described compressive plate, preformed board are provided with co-extrusion material runner feeding mouth, one end of described co-extrusion material runner feeding mouth is fixed with the co-extrusion sprue, be fixed with co-extrusion runner, bayonet socket feed chamber on the described co-extrusion sprue, be fixed with the coextrusion mold slit flow channel on the described co-extrusion runner, an end of described coextrusion mold slit flow channel is connected with outer wall preformed runner.
Beneficial effect of the present invention: after having adopted method and apparatus of the present invention, can make the wood-plastic door window principal mode material with PVC clad, have environmental protection, can decompose, cheap advantage; Because what adopt is that PVC coats the co-extrusion form entirely, wood-plastic door window principal mode material skin is still moulded for wood for the PVC internal layer, so that the wood-plastic door window principal mode material of producing can also keep in energy-conserving and environment-protective that conventional P VC section bar has the advantage such as attractive in appearance, anti-aging.
Description of drawings
Fig. 1 is the schematic diagram of the section bar produced of the present invention.
Fig. 2 is the structural representation of extrusion die of the present invention.
Fig. 3 is that the A-A of Fig. 2 is to cutaway view.
Fig. 4 is that the B-B of Fig. 2 is to cutaway view.
Fig. 5 is that the C-C of Fig. 2 is to cutaway view.
Shown in the figure: 1 inserts, 2 second profiled sheetings, 3 first profiled sheetings, 4 preformed board, 5 compressive plates, 6 core spreaders, muscle forming area in 7 die inlets, 11 section bars, 31 outer wall preformed runners, 32 bayonet socket feed chamber, 41 coextrusion mold slit flow channel, 42 section bar base-material forming areas, 43 co-extrusion runners, 51 co-extrusion material runner feeding mouths, 52 co-extrusion sprues, 61 inner rib sprues, 71 sprues.
The specific embodiment
The present invention relates to a kind of forming method of Wood-plastic profiles of the PVC of having clad, the step of this method is as follows:
Wood is moulded base-material add extrusion die from die inlet;
Wood is moulded base-material and is added behind the extrusion die wood and mould base-material and push to the mould outlet direction by sprue;
When wood is moulded base-material and is squeezed to section bar base-material forming area the co-extrusion material runner feeding mouth of PVC powder from extrusion die added;
PVC powder to be added and wood are moulded base-material and are moulded at outer wall preformed runner place and wood and extrude from mould outlet after base-material merges, and namely get the Wood-plastic profiles with PVC clad.
Shown in Fig. 2,3,4,5, the present invention realizes the extrusion die of said method, this extrusion die comprises die inlet 7 and sprue 71, and this extrusion die also comprises compressive plate 5, preformed board 4, the first profiled sheeting 3, the second profiled sheeting 2 that is connected successively;
Be fixed with core spreader 6 in the described sprue 71, described core spreader 6 central authorities are provided with the inner rib sprue 61 that is connected with sprue 71, one end of described core spreader 6 is fixed with inserts 1,1 central authorities of inserting are provided with muscle forming area 11 in the section bar that is connected with inner rib sprue 61, and described preformed board 4 central authorities are provided with the section bar base-material forming area 42 that is connected with sprue 71;
The central authorities of described the first profiled sheeting 3, the second profiled sheeting 2 are provided with the outer wall preformed runner 31 that is connected with section bar base-material forming area 42;
Described compressive plate 5, preformed board 4 are provided with co-extrusion material runner feeding mouth 51, one end of described co-extrusion material runner feeding mouth 51 is fixed with co-extrusion sprue 52, be fixed with co-extrusion runner 43, bayonet socket feed chamber 32 on the described co-extrusion sprue 52, be fixed with coextrusion mold slit flow channel 41 on the described co-extrusion runner 43, an end of described coextrusion mold slit flow channel 41 is connected with outer wall preformed runner 31.
Outer wall preformed runner 31 was used for extruding the interior muscle of wood-plastic door window principal mode material, the function bayonet socket that bayonet socket feed chamber 32 is used for extruding wood-plastic door window principal mode material for muscle forming area in the outer surface of extruding wood-plastic door window principal mode material, the section bar 11 after the present invention had adopted this structure.
Forming method of the present invention is that with respect to the method difference that the common PVC Surface of profile coats co-extrusion full co-extrusion material and base-material are different materials; The melt viscosity of co-extrusion material and base-material, melt temperature differ larger, extrude the Wood-plastic profiles with PVC clad if adopt existing extrusion die, because co-extrusion material and base-material are relatively poor because of compatibility, be prone to the phenomenon that layering and internal layer wood are moulded cracking after the co-extrusion, so existing extrusion die is to extrude the Wood-plastic profiles with PVC clad.
The present invention in use, wood is moulded base-material and is added the backward mould outlet direction extruding of extrusion die, a part of wood moulds that base-material enters inner rib sprue 61, another part wood is moulded base-material and entered co-extrusion runner 43 by sprue 71;
The wood that enters inner rib sprue 61 is moulded base-material and is entered muscle forming area 11 in the section bar; The wood that enters co-extrusion runner 43 is moulded base-material and is flowed to section bar base-material forming area 42, treat when wood is moulded base-material and entered section bar base-material forming area 42 the co-extrusion material runner feeding mouth 51 of PVC powder from extrusion die to be added, the PVC powder is by co-extrusion material runner feeding mouth 51 co-extrusion sprues 52;
The PVC powder that enters co-extrusion sprue 52 enters respectively co-extrusion runner 43 and bayonet socket feed chamber 32, the PVC powder that enters co-extrusion runner 43 enters extrusion forming slit flow channel 41 and moulds base-material and merge with the wood in the section bar base-material forming area 42, enter outer wall preformed runner 31 after the fusion and in the outlet of mould and the section bar muscle forming area 11 interior wood mould base-material and extrude simultaneously;
So namely get the Wood-plastic profiles with PVC clad.
Mould the base-material junction for fear of the wood-plastic door window principal mode material of extruding at function bayonet socket and wood and weld mark occurs, the present invention is arranged on the co-extrusion sprue of extrusion die on the compressive plate 5, co-extrusion sprue 52 to co-extrusion runner 43 and bayonet socket feed chamber feed 32, is sent the co-extrusion material into coextrusion mold slit flow channel 41 by the co-extrusion runner on the preformed board 4 respectively again.Because co-extrusion sprue 52 has the bifurcated as branch, co-extrusion runner 43 and bayonet socket feed chamber 32 are connected to crotch, so the PVC powder is through shunting, part PVC powder can evenly be tiled in wood and mould the surface of base-material and mould base-material with wood and extrude and merge with base-material in the exit function bayonet socket of formation wood-plastic door window principal mode material to the mould outlet place at the PVC powder that the 31 interior fusions of outer wall preformed runner, another part PVC powder enter bayonet socket feed chamber 32, weld mark occurs thereby avoided wood-plastic door window principal mode material to mould the base-material junction at function bayonet socket and wood.
In sum, adopted method and apparatus of the present invention after, can make the wood-plastic door window principal mode material with PVC clad, have environmental protection, can decompose, cheap advantage; Because what adopt is that PVC coats the co-extrusion form entirely, wood-plastic door window principal mode material skin is still moulded for wood for the PVC internal layer, so that the wood-plastic door window principal mode material of producing can also keep in energy-conserving and environment-protective that conventional P VC section bar has the advantage such as attractive in appearance, anti-aging.
Claims (2)
1. the forming method that has the Wood-plastic profiles of PVC clad is characterized in that the method comprises the steps:
Wood is moulded base-material add extrusion die from die inlet;
Wood is moulded base-material and is added behind the extrusion die wood and mould base-material and push to the mould outlet direction by sprue;
When wood is moulded base-material and is squeezed to section bar base-material forming area the co-extrusion material runner feeding mouth of PVC powder from extrusion die added;
PVC powder to be added and wood are moulded base-material and are moulded at outer wall preformed runner place and wood and extrude from mould outlet after base-material merges, and namely get the Wood-plastic profiles with PVC clad.
2. extrusion die that is used for the forming method of the described Wood-plastic profiles with PVC clad of claim 1, it comprises die inlet (7) and sprue (71), it is characterized in that it also comprises compressive plate (5), preformed board (4), the first profiled sheeting (3), the second profiled sheeting (2) that is connected successively;
Be fixed with core spreader (6) in the described sprue (71), described core spreader (6) central authorities are provided with the inner rib sprue (61) that is connected with sprue (71), one end of described core spreader (6) is fixed with insert (1), (1) central authorities of inserting are provided with muscle forming area (11) in the section bar that is connected with inner rib sprue (61), and described preformed board (4) central authorities are provided with the section bar base-material forming area (42) that is connected with sprue (71);
The central authorities of described the first profiled sheeting (3), the second profiled sheeting (2) are provided with the outer wall preformed runner (31) that is connected with section bar base-material forming area (42);
Described compressive plate (5), preformed board (4) are provided with co-extrusion material runner feeding mouth (51), one end of described co-extrusion material runner feeding mouth (51) is fixed with co-extrusion sprue (52), be fixed with co-extrusion runner (43), bayonet socket feed chamber (32) on the described co-extrusion sprue (52), be fixed with coextrusion mold slit flow channel (41) on the described co-extrusion runner (43), an end of described coextrusion mold slit flow channel (41) is connected with outer wall preformed runner (31).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104932415A CN102962973A (en) | 2012-11-28 | 2012-11-28 | Method for forming wood plastic section bars with polyvinyl chloride (PVC) cladding layer and extrusion mould |
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| CN2012104932415A CN102962973A (en) | 2012-11-28 | 2012-11-28 | Method for forming wood plastic section bars with polyvinyl chloride (PVC) cladding layer and extrusion mould |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103692633A (en) * | 2013-12-13 | 2014-04-02 | 铜陵中发三佳科技股份有限公司 | Extrusion mold with pressure-balanced double-layer coextrusion flow channel |
| CN105799137A (en) * | 2016-04-18 | 2016-07-27 | 黄石市鸿达塑料模具有限责任公司 | Production method and processing mold of steel lining-free PVC profiled material |
| CN107245204A (en) * | 2017-07-20 | 2017-10-13 | 菏泽海润新能源有限公司 | PVC decorative board and production technology and mould therefor |
| CN108274715A (en) * | 2017-01-05 | 2018-07-13 | 黄石市鸿达塑料模具有限责任公司 | Co-extrusion PE wood moulding molds are cooled down twice |
| CN109454844A (en) * | 2018-12-24 | 2019-03-12 | 福州启辰阳光建材有限公司 | The production mould of integrated wall plate |
| CN113829600A (en) * | 2021-09-16 | 2021-12-24 | 安徽国风木塑科技有限公司 | Colorful co-extrusion wood-plastic mold runner |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06297539A (en) * | 1993-04-13 | 1994-10-25 | Kurabo Ind Ltd | Flame-retardant low foaming extrusion molded body |
| US20100159213A1 (en) * | 2008-12-19 | 2010-06-24 | Przybylinski James P | Wood-Plastic Composites Utilizing Ionomer Capstocks and Methods of Manufacture |
| CN202528422U (en) * | 2012-04-06 | 2012-11-14 | 黄石市飞翔模具有限公司 | Coextrusion mold for wood-plastic sections |
| CN202922940U (en) * | 2012-11-28 | 2013-05-08 | 铜陵中发三佳科技股份有限公司 | Extruding die for molding wood-plastic section provided with polyvinyl chloride (PVC) cladding layer |
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2012
- 2012-11-28 CN CN2012104932415A patent/CN102962973A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06297539A (en) * | 1993-04-13 | 1994-10-25 | Kurabo Ind Ltd | Flame-retardant low foaming extrusion molded body |
| US20100159213A1 (en) * | 2008-12-19 | 2010-06-24 | Przybylinski James P | Wood-Plastic Composites Utilizing Ionomer Capstocks and Methods of Manufacture |
| CN202528422U (en) * | 2012-04-06 | 2012-11-14 | 黄石市飞翔模具有限公司 | Coextrusion mold for wood-plastic sections |
| CN202922940U (en) * | 2012-11-28 | 2013-05-08 | 铜陵中发三佳科技股份有限公司 | Extruding die for molding wood-plastic section provided with polyvinyl chloride (PVC) cladding layer |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103692633A (en) * | 2013-12-13 | 2014-04-02 | 铜陵中发三佳科技股份有限公司 | Extrusion mold with pressure-balanced double-layer coextrusion flow channel |
| CN105799137A (en) * | 2016-04-18 | 2016-07-27 | 黄石市鸿达塑料模具有限责任公司 | Production method and processing mold of steel lining-free PVC profiled material |
| CN108274715A (en) * | 2017-01-05 | 2018-07-13 | 黄石市鸿达塑料模具有限责任公司 | Co-extrusion PE wood moulding molds are cooled down twice |
| CN107245204A (en) * | 2017-07-20 | 2017-10-13 | 菏泽海润新能源有限公司 | PVC decorative board and production technology and mould therefor |
| CN109454844A (en) * | 2018-12-24 | 2019-03-12 | 福州启辰阳光建材有限公司 | The production mould of integrated wall plate |
| CN113829600A (en) * | 2021-09-16 | 2021-12-24 | 安徽国风木塑科技有限公司 | Colorful co-extrusion wood-plastic mold runner |
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Application publication date: 20130313 |