之所以使用热床，是因为 它们通过保持挤出的塑料温暖并大大防止翘曲，从而大大提高了打印质量 。与零件内部的塑料相比，翘曲是由零件边缘的塑料以不均匀的速度冷却而引起的常见情况。结果是拐角弯曲并使模型变形
Derived from the raft, mouse ears are a clever and effective technique to make sure that the corners of your prints are well secured to the platform and won’t lift. Although they offer greater adhesion by increasing the surface area for your part to grip onto the bed, they are not 100% effective without a heat bed. Sometimes the warping forces are simply too great and can overcome the mouse ears.
Heat beds work to prevent this warping effect by keeping your part warm during the whole printing process which keeps the material at or above heat-deflection temperature (the temperature at which it is malleable). Keeping the parts in the heat-deflection range ensures that the part remains flat on the print bed. Heat beds, in combination with other tools to increase adhesion, will be covered in this article to bolster your ability to fight unwanted effects and improve your printing quality.
Painter’s tape is an ideal product for printing ABS with a heat bed because of it’s textured surface increasing adhesion. We’ve used it with varying degrees of success and others report great results as well.
As far as PLA is concerned, our experience is that it doesn’t stick well to heated painter’s tape and that painter’s tape itself doesn’t stick well to the glass when heated. However, we found that PLA sticks very well to Kapton tape which is typically layered to cover the entire print area. The Kapton tape needs to be periodically replaced and this process can be tedious. To remove this obstacle, you can buy Kapton tape in wider rolls which means you need to layer a lesser amount of strips onto the print area to fully cover it.
All the heat sources mentioned in this article will typically need an added surface to preserve the quality & integrity of the heating element over time or to provide protection in the event of a hotend collision. Obviously, the aluminium clad heaters are always used in conjunction with a surface.
The recommended print surface to be used with a PCB or Polymide film heater is a borosilicate glass, or when unavailable, a tempered glass. For the PCB heat bed, we recommend layering Kapton tape or using a thin glass (2 mm) over-top.
Flexible Kapton Polyimide Film Heater For 3D Printer
Polyimide is a thin, translucent material, has excellent dielectric strength. In the narrow space or require lighter, heater exposed to vacuum, oil or chemicals application environment, polyimide heaters are ideal. Compared with silicone heating film, PET film or ceramic electric heating film, polyimide is more compact.
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Polyimide Film Heater Characteristics
1) Heater thin and light so you can just position on the need for heating without heating part can be avoided.
1.医疗诊断工具：加热样品盘，试剂瓶等。2 . 加热次级行星组件。3.在冷空气中保护飞机的机械和电子设备。4.测试或模拟IC。5.室外电子设备，如读卡器和液晶显示器。6，保持分析仪常数