LED light diffusion PC lampshade injection yellowing solution

Release date: 2018-04-02 Source: Lighting industry information sharing:

First, we must understand the information

PC, a polycarbonate, is a high molecular polymer containing a carbonate group in a molecular chain and is a heat sensitive material. It is extremely sensitive to temperature and easily adsorbs moisture. Because of its strong mechanical properties, it occupies a large proportion in engineering plastics. Seeing this, I think you should understand what you want to do with this gadget to make a strange idea product, pay attention to those aspects! Dear, you are so smart! That is temperature + moisture. Ok! We have chosen the PC material to do the product you want. Without the equipment, it is impossible. Can we always think of a product? ! PC can be plasticized by injection molding, blow molding, extrusion and other processes. Let's take the injection molding process as an example. I also want to take things in terms of injection molding. Other processes are for reference only.

Second, we must choose injection molding equipment

There are many varieties of plastic products, so it is appropriate to choose the right equipment and related accessories. There are many injection molding machine brands, and there are only N injection molding machine production plants in Ningbo. Guangdong injection molding machine, Japanese injection molding machine, European machine, Korean machine are also not cheap. Of course, Hong Kong and Taiwan will also be produced. In short, pick one that suits you, just like you are a wife, you can spend a lot of money. The price is still asking for the end, so choose the right equipment (the money that the equipment spends is not cheap to buy instant noodles, dude!) Very important! No matter how you use it, use it, and make a good product, you can do it all!

Third, choose the appropriate screw

The equipment has been fixed, and the next thing to pay attention to is the screw. The individual strongly advocates the use of the PC-specific screw. It is still very reasonable for the door to be a woman. PC+PC screw is useful to avoid some unexpected problems.

Ok, the machine is there, the screw is fixed, after the debugging is completed, then go to the machine!

Fourth, the injection process needs to be rigorous

The process notes are as follows:

1. Baking process: PC is very easy to absorb moisture, so it must be boring, normal should be controlled 100 ° C 4-6H is better. The thickness of the material layer should not exceed 20mm-30mm. Too thick will be boring and not full. Many basin friends are not paying attention to this to form a large number of defective products. Short oil, it is the silver of white flowers! To be a man is still to be kind, not to do a little bit of water! Advocate dehumidification dryer, do not use hot air.

2. Processing temperature: As mentioned above, another point is presented here, that is, temperature control. PC is very sensitive, you must serve the Lord well, people are not happy to give you a face (high temperature, carbonization - yellow), you have to save money again. To make a bright optical product, it should not be slightly lower than the dark color of the product, so that your product is more beautiful.

3. Equipment cleaning: check the screw, check ring, plating, barrel, nozzle, gate, otherwise a small link has a problem, it is the loss of white flowers and silver!

In the end, I wish you all a happy business and a high business! Count the money to soft!

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