The dimensional change of
injection molded products is essentially caused by the different shrinkage of plastics. Any change in material temperature, mold, pressure, and production cycle will lead to changes in the size of the part, especially PP, PE, nylon, etc. with higher crystallinity. The main reasons are as follows:
1. Machine side:
(1) If the plasticizing capacity is insufficient, a machine with a large plasticizing capacity should be selected.
(2) The supply is unstable. Check whether the voltage of the machine is fluctuating, whether the components of the injection system are worn or whether there is a problem with the hydraulic valve.
(3) The screw speed is unstable. It should be checked whether the motor is faulty, whether the screw and the barrel are worn, whether the hydraulic valve is stuck, and whether the voltage is stable.
(4) The temperature is out of control, the proportional valve and the total pressure valve are not working properly, and the back pressure is unstable.
2. Mold aspect:
(1) To have sufficient mold strength and rigidity, the cavity material should be made of wear-resistant material.
(2) When the dimensional accuracy is high, try not to adopt a multi-cavity form.
(3) The ejector system, pouring system and cooling system should be set up reasonably to ensure the stable production conditions.
3. Plastics:
(1) The mixing of new materials and recycled materials should be consistent.
(2) The drying conditions should be consistent and the particles should be uniform.
(3) The influence of shrinkage rate on dimensional accuracy is fully considered when selecting materials.
4. Processing:
(1) If the plastic processing temperature is too low, the temperature should be increased because the higher the temperature, the smaller the dimensional shrinkage.
(2) For crystalline plastics, the mold temperature is lower.
(3) The molding cycle should be stable and should not be excessively fluctuating.
(4) The amount of feed, that is, the amount of shot glue should be stable.
LED Wall Light
SZYOUMY- A professional team on Amazon more than 13 year. We commit ourselves to design best light, give the best customer experience and after-sales service to all customers.
Aluminum lamp body, durable, one die-casting molding, the details determine the quality. New LED technology, LED light bulb which is bright, No Flicker, No Strobe.(Bulb CANNOT be replaced)
3000K 2700K 4000K warm white light will give a harmonious and elegant feeling for your family. Modern and simple wall lamp. It may not be bright enough to be a main light, but it will be really nice decoration, even can be a night light.
Environmental Protection - High quality LED COB lamp, high efficiency, energy saving and Environmental protection.
Safety - Long-Lifespan LED Driver, with short-circuit protection. Shine beautifully for your house
Product Details:
Type: modern, minimalist wall lamps
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Input Voltage(V)
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AC 85-265V
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Color Temperature(CCT)
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2700K//3200k/6500k/5000k
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Led Chip
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High power COB CHIP
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Lamp Material
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ALuminum
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Lamp Luminous Flux(lm)
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80-110LM/W
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Product name
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COB Led Wall Light
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Power
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2W 4W 6W 12W 18W 20W
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Beam Angle Design
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0-120 Degree Adjustable
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LAMP SIZE
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Dimension: 100*100*100mm / 100*100*50mm
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Warranty
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2-3 Years
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IP grade
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IP65 Waterproof
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Application
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Interior Wall Lighting for Living Room Home Garden
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Application best for living room, bedroom, staircase, balcony, bar kitchen, nursery, study, office, restaurants, hotels, shop, cafe, etc.
Led Wall Light,Adjustable Wall Light,Aluminum Wall Light,Waterproof Led Wall Lighting
Shenzhen You&My Electronic Technology Co., Ltd , https://www.youmyledlight.com