CN2769025Y - Special die for wood-plastic composite material with PTEF lining - Google Patents
Special die for wood-plastic composite material with PTEF lining Download PDFInfo
- Publication number
- CN2769025Y CN2769025Y CN 200520001341 CN200520001341U CN2769025Y CN 2769025 Y CN2769025 Y CN 2769025Y CN 200520001341 CN200520001341 CN 200520001341 CN 200520001341 U CN200520001341 U CN 200520001341U CN 2769025 Y CN2769025 Y CN 2769025Y
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- plastic composite
- wood plastic
- die
- utility
- model
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- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model relates to a special die of which the inside is lined with polytetrafluoroethylene for wood plastic composite materials. In the utility model, a polytetrafluoroethylene inner lining is arranged in an inner cavity of a metal die. the special die of which the inside is lined with polytetrafluoroethylene for wood plastic composite materials of the utility model can decrease the surface friction coefficient of the inner cavity of the metal die; thus, the homogeneity of the smoothness of the inner cavity of the metal die can be realized, the flowability of wood plastic composite material fused masses in the die can be effectively improved, and deposited materials caused by the difference of the roughness of the inner cavity of the die can be eliminated; consequently, the purpose of the improvement of production efficiency and production quality can be realized.
Description
Technical field
The utility model relates to a kind of wood plastic composite particular manufacturing craft of inner liner polytetrafluoroethylene.
Background technology
At present, the mould that employed mould all adopts plastic processing to use in the extrusion molding production process of wood plastic composite.Because the plastics of fusion have good flowability, be in the section bar production process of raw material to the surface flatness of dies cavity carrying out with plastics, there is not too high requirement, the roughness of the different parts of the inner chamber of mould can allow the difference of a little.But in the production process of wood plastic composite,, the flowability of melt is reduced greatly owing in plastic basis material, added a large amount of wood powders.There are some researches show: when melt index be the acrylic resin of 4g/min in filling behind 60% the wood powder, melt index is reduced to 0.23g/min, this fluidity of molten that shows wood plastic composite has very big gap than plastics.The reduction of wood plastic composite fluidity of molten can cause wood to mould compounding flux flow difficulties in mould, causes and extrudes difficulty in the production process, and production efficiency is reduced.In addition, the difference of the smoothness of dies cavity, can make the flow rate of material in mould produce difference, to some complex-shaped mould even buildup in the mould can take place, thereby influence the stability and the outward appearance of product quality, also can make the cross-head hypertonia, the load that increases machine causes reduce the service life of screw rod.
For solving in the wood plastic composite production process because flow difficulties and the problems such as the difference of the speed production efficiency that causes low, constant product quality and appearance poor of melt in mould, requirement is used for wood plastic composite extrudes the dies cavity of production and should have lower and skin-friction coefficient uniformly, to improve the production efficiency and the product quality of wood plastic composite.
This creator actively makes great efforts research, through research and development with great concentration, invents out the utility model of true tool practical effect and industrial utilization finally.
Summary of the invention
The purpose of this utility model provides a kind of coefficient of friction that can reduce mould inner wall, and each position of realizing dies cavity all has identical coefficient of friction, thereby improves the wood plastic composite particular manufacturing craft of the inner liner polytetrafluoroethylene of the output of the product that wood plastic composite is shaped and quality.
For achieving the above object, the utility model is taked following design: a kind of wood plastic composite particular manufacturing craft of inner liner polytetrafluoroethylene is characterized in that: be provided with polytetrafluoroethyllining lining at the metal die inner chamber.
Polytetrafluoroethyllining lining is attached on the metal die inner chamber wall.
The utility model has the advantages that: the wood plastic composite particular manufacturing craft of the utility model inner liner polytetrafluoroethylene is provided with polytetrafluoroethyllining lining at the metal die inner chamber.Because characteristics such as polytetrafluoroethylene (PTFE) have acidproof, wear-resisting, high temperature resistant and skin-friction coefficient is low, its operating temperature can reach 260 ℃, and has the skin-friction coefficient of 0.05-0.1, can satisfy the manufacturing condition of wood plastic composite.The utility model invests dies cavity with the polytetrafluoroethylene (PTFE) lining, can reduce the skin-friction coefficient of dies cavity significantly, improve the flowing velocity of material in mould, and make each position of dies cavity have identical fineness, to overcome the difference problem of the dies cavity roughness that causes owing to the machining difficulty, improve the flowability of wood plastic composite melt in mould, solved material in the buildup problem that difference caused of dies cavity owing to fineness, problem such as the low and constant product quality difference of the production efficiency that exists in the Wood-plastic composite material extrusion moulding production process is resolved, improve production efficiency and product quality, and can increase the consumption of wood components in the wood plastic composite.
Description of drawings
Fig. 1 looks schematic diagram for the utility model master
Fig. 2 is the A-A cross-sectional schematic of Fig. 1
The specific embodiment
As shown in Figure 1 and Figure 2, the wood plastic composite particular manufacturing craft of the utility model inner liner polytetrafluoroethylene is characterized in that: be provided with polytetrafluoroethyllining lining 3 at metal die 1 inner chamber 2.
The manufacture method of the wood plastic composite particular manufacturing craft of the utility model inner liner polytetrafluoroethylene is as follows: the stainless steel mould 1 that at first processes required specification by the shape of product requirement, after sandblast, electrification processing, on dies cavity 2 walls, adopt the mode of spraying to enclose polytetrafluorethylecoatings coatings uniformly; Then mould is sent into heat-agglomerating in the sintering furnace, polytetrafluorethylecoatings coatings is tightly served as a contrast form certain thickness no gap liner 3 on the dies cavity wall, whole sintering process carries out according to conventional method, and sintering temperature is 50-200 ℃.
The position of extrusion die agglomeration tetrafluoroethylene comprises: the inner chamber of mouth template, preformed board, constriction plate, stream support, rebound etc. and the surface of dividing flow cone and shunting muscle.The wood plastic composite particular manufacturing craft of the utility model inner liner polytetrafluoroethylene also can bear higher pressure and have good wearability under higher temperature, be specially adapted to the production of large scale and complex-shaped wood plastic composite.
The above;, be not that attempt is done any pro forma restriction to the utility model according to this, only so every under the creation spirit of the utility model for being used for explaining the preferred embodiment of the utility model; any modification or the change done all must belong to the scope that the utility model is intended to protection.
Claims (2)
1, a kind of wood plastic composite particular manufacturing craft of inner liner polytetrafluoroethylene is characterized in that: be provided with polytetrafluoroethyllining lining (3) at metal die (1) inner chamber (2).
2, according to the wood plastic composite particular manufacturing craft of the described inner liner polytetrafluoroethylene of claim 1, it is characterized by: polytetrafluoroethyllining lining (3) is attached on metal die (1) inner chamber (2) wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520001341 CN2769025Y (en) | 2005-01-21 | 2005-01-21 | Special die for wood-plastic composite material with PTEF lining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520001341 CN2769025Y (en) | 2005-01-21 | 2005-01-21 | Special die for wood-plastic composite material with PTEF lining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2769025Y true CN2769025Y (en) | 2006-04-05 |
Family
ID=36690108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520001341 Expired - Fee Related CN2769025Y (en) | 2005-01-21 | 2005-01-21 | Special die for wood-plastic composite material with PTEF lining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2769025Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102203022A (en) * | 2008-10-30 | 2011-09-28 | 康宁股份有限公司 | Methods for forming cladding portions of optical fiber preform assemblies |
| CN104290222A (en) * | 2013-07-18 | 2015-01-21 | 上海沪渝实业有限公司 | Molding mold and molding method |
-
2005
- 2005-01-21 CN CN 200520001341 patent/CN2769025Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102203022A (en) * | 2008-10-30 | 2011-09-28 | 康宁股份有限公司 | Methods for forming cladding portions of optical fiber preform assemblies |
| CN104290222A (en) * | 2013-07-18 | 2015-01-21 | 上海沪渝实业有限公司 | Molding mold and molding method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060405 Termination date: 20110121 |