Integrated injection molding type PTC heater and preparation method thereof
A heater, all-in-one technology, applied in ohmic resistance heating, heating element materials, ohmic resistance heating parts and other directions, can solve problems such as increased labor hours, labor costs, low waterproof level of PTC heaters, and increased production costs, saving The cost of mold opening and the effect of solving the problem of waterproof and dustproof
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[0017] In order to deepen the understanding of the present invention, the present invention will be described in further detail below with reference to the embodiments, which are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.
[0018] like figure 1 As shown, this embodiment provides an integrated injection-molded PTC heater, including a PTC heating core 1 and a fixing plate 2, the PTC heating core 1 is arranged on the fixing plate 2, and the PTC heating core 1 and the fixing plate 2 are surrounded by A foamed silica gel 3 is provided, and the foamed silica gel 3 is integrally injection molded with the PTC heating core 1 and the fixing plate 2 .
[0019] The present embodiment also provides a preparation method of an integral injection-molded PTC heater, and the steps of the preparation method are as follows:
[0020] Step 1: Clean the injection mold cavity, and spray liquid Teflon mold release agent
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