Disposable package molding method of electric heating film unit product

A molding method and electric heating film technology, applied in the field of manufacturing, can solve the problems of plastic film weather resistance, physical performance limitations of insulation grade, labor-intensive, time-consuming and material-intensive, seamless and close contact, etc.

Inactive Publication Date: 2015-03-25
青岛四机宏达工贸有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are four technical problems in the application of existing electrothermal film products (rolled materials): (1) When planar electrothermal film products are applied to non-planar complex geometries, they generally adopt wrapping and splicing methods, which cannot achieve seamless and In close contact, the installation is labor-intensive, time-consuming, and material-intensive, and the quality cannot be guaranteed
Cutting ends, electrical contact parts, and wiring parts on the film cannot reach a high moisture-proof, waterproof, and insulation level, which is labor-intensive, time-consuming, and material-in

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Example 1: Encapsulating tubular polymer electrothermal film unit products with PET pre-coated film

[0020] 1. Cut the naked polymer film according to the size of the tube-shaped expansion and reduce the length of both sides by 5mm, and cut and cut the PET pre-coated film according to the size of the tube-shaped expansion by increasing 15mm;

[0021] 2. Press the terminal on the naked polymer film, and weld the wire on the terminal;

[0022] 3. Stack the naked polymer film connected with the wire and the PET pre-coated film, with the naked film in the middle. then put into the mould;

[0023] 4. The mold temperature is 115°C and the pressure is 0.8MPa;

[0024] 5. Keep warm and keep pressure for 4 seconds;

[0025] 6. Demoulding;

[0026] 7. Natural cooling and shaping.

Embodiment 2

[0027] Embodiment 2: Encapsulate the planar square carbon fiber electrothermal film unit product with silicone rubber

[0028] 1. Cut the carbon fiber nude film according to the four sides of the planar square size by 5mm;

[0029] 2. Press the terminal on the carbon fiber naked film, and weld the wire on the terminal;

[0030] 3. Refining silicone rubber and calendering to form a film, cutting and blanking according to the square size of the unit product;

[0031] 4. Stack the silicone rubber sheet and the carbon fiber naked film connected to the wire (the naked film is in the middle, straighten the wire and position it) into the mold;

[0032] 5. The mold temperature is 270°C and the pressure is 10MPa;

[0033] 6. Vulcanization molding in 25 minutes;

[0034] 7. Demolding

[0035] 8. Air cooling and cooling to shape

Embodiment 3

[0036] Example 3: Electrothermal film coil processing electrothermal film unit product sealing end

[0037] 1. Cut the electrothermal film coil according to the required length;

[0038] 2. Peel off the plastic film at the energized strips on both sides of the end;

[0039] 3. Crimping terminals; welding wires;

[0040] 4. Put the two wires together along the end of the electric heating film and fix them with hot melt adhesive;

[0041] 5. Cut the PET pre-coated film with the same width as the electric heating film into strips with a width of 65mm

[0042] 6. Stack the 65mm wide PET pre-coating film strips on the top and bottom of the end of the electric heating film, and the pre-coating film should exceed the end of the electric heating film by 15mm. put into the mould;

[0043] 7. The mold temperature is 115°C and the pressure is 0.6MPa;

[0044] 8. Keep warm and keep pressure for 2 seconds;

[0045] 9. Demoulding; natural cooling and shaping.

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PUM

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Abstract

The invention relates to a disposable package molding method of an electric heating film unit product. With a naked film, a pre-coated plastic film, silicon rubber, plastics, plastic-wood, resin and the like as materials, the electric heating film unit product is fabricated by a molding machine mold, and the disposable package molding method comprises the steps of: firstly cutting the naked film, connecting a conducting wire, then taking the plastic film, pre-coating an adhesive layer or refined silica gel on a single surface of the plastic film, and calendering a film; cutting the pre-coated film or silica gel film to form a cut film; wrapping the cut film provided with the pre-coated film or the silica gel film with the naked film from upper and lower surfaces, and finally putting multiple layers of films in the molding machine mold for forming under certain conditions. The electric heating film product provided by the invention is unitized and modular. In the electric heating film unit product provided by the invention is subjected to package molding at one time, and nearly all insulating and sealing materials can be used as the package naked film in the invention. The electric heating film unit product provided by the invention can be made into electric heating film products with various shapes.

Description

technical field [0001] The invention belongs to the field of manufacturing technology, and in particular relates to a one-time packaging and molding method for finished products of electrothermal film units. Background technique [0002] With the development of material technology, as well as the requirements of environmental protection and energy saving, in recent years, inorganic non-metallic (carbon fiber based, printing ink carbon based, PTC based, etc.) electric heating films and polymer electric heating films have been greatly promoted in the heating field. Applications; especially the polymer electric heating film, because the material itself has superior properties such as no memory, no aging, no attenuation, arbitrary voltage, arbitrary power density, arbitrary shape, etc., in addition to a large number of applications in the heating field, it is also used in high-temperature health care environmental engineering, It has also been developed and applied in the field...

Claims

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Application Information

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IPC IPC(8): B29D7/01H05B3/34
Inventor 孙殿福许永仕肖文光
Owner 青岛四机宏达工贸有限公司
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