Novel special-shaped material inner cavity covering co-extrusion mechanism
A profiled material and inner cavity technology, applied in the field of plastic profiled material production, can solve the problems of unstable extrusion process, poor surface brightness of co-extruded layer, easy material leakage, etc. The effect of uniformity and reduction of mold manufacturing cost and production cost
Inactive Publication Date: 2017-05-31
ANHUI NAIKE EXTRUSION SCI & TECH
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Problems solved by technology
The conventional co-extrusion method will directly lead to the following common problems on the co-extruded surface of the co-extruded profile: uneven thickness of the co-extruded layer, unstable extrusion process and easy material leakage, poor surface brightness of the co-extruded layer, uneven color and other defects
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[0010] Combine below figure 1 and figure 2 , to further illustrate the present invention.
[0011] As shown in the figure, the inner cavity of the new special-shaped material is covered with a co-extrusion mechanism, including a die head 1 composed of a functional board. The die head 1 is provided with a PVC collecting flow channel 2 and a covered co-extrusion material flow channel 3. The covering The co-extrusion material flow channel 3 is located between the splitter plate and the machine neck of the die head 1, the PVC collecting flow channel 2 is connected to the combined compound area molding insert 7, and the covered co-extrusion material flow channel 3 is combined by pressurization Type flow channel 6 communicates with combined compound area molding insert 7; said pressurized combined flow channel 6 includes split flow channel 61 and pressurized flow channel 62, and said pressurized flow channel 62 is composed of several grid-type partition strips 8 Divided into seve...
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The invention discloses a novel special-shaped material inner cavity covering co-extrusion mechanism. The novel special-shaped material inner cavity covering co-extrusion mechanism comprises a die head composed of function boards. A PVC material collection runner and a covering co-extrusion material runner are arranged in the die head. The covering co-extrusion material runner is located between a flow division plate of the die head and a machine neck. The PVC material collection runner communicates with a combined composite area forming insert. The covering co-extrusion material runner communicates with the combined composite area forming insert through a pressurizing combined runner. The pressurizing combined runner comprises a flow division runner and a pressurizing runner. The pressurizing runner is divided into a plurality of pressurizing channels through a plurality of grid type division strips. The sectional area of the part, close to the flow division runner, of the pressurizing channels is larger than that of the part, far away from the flow division runner, of the pressurizing channels. Through the novel special-shaped material inner cavity covering co-extrusion mechanism, on the premise that the product specifications and all properties are not influenced, the production cost of PVC profile materials is lowered greatly, the application field of the PVC profile materials is broadened greatly, and manufacturing cost and production cost of a die are reduced greatly.
Description
technical field [0001] The invention relates to the field of making plastic profiled materials, in particular to a co-extrusion mechanism for co-extruding the inner wall of a cavity during the extrusion molding process of plastic profiled materials. Background technique [0002] In the extrusion molding process of production, the recycling of PVC base material can be an effective measure to improve the economic efficiency of plastic profiled materials. PVC raw materials, every time they go through a heating process, will reduce the internal quality of PVC, especially the anti-corrosion, anti-aging performance will be greatly reduced, and the application of special-shaped materials in special requirements, etc., and the co-extrusion extrusion technology, just The above-mentioned shortcomings can be overcome, not only does not affect the various performances of the product, but also greatly reduces the raw material cost of the enterprise. At present, composite profiles are us...
Claims
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IPC IPC(8): B29C47/06B29C47/12B29K27/06B29C48/30
CPCB29C48/03B29C48/18B29C48/30B29K2027/06B29L2031/001
Inventor 周晓辉吴成胜
Owner ANHUI NAIKE EXTRUSION SCI & TECH