Sun On Plastic Moulding Limited
| Payment Terms | T/T |
| Supply Ability | More than 1 million |
| Delivery Time | 30day |
| Packaging Details | As the customer required |
| Emphasize | Reprint Books In A Reduced Format Cause And Countermeasure Analysis |
| Place of Origin | CHINA |
| Brand Name | OEM |
| Certification | ISO |
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Product Specification
| Payment Terms | T/T | Supply Ability | More than 1 million |
| Delivery Time | 30day | Packaging Details | As the customer required |
| Emphasize | Reprint Books In A Reduced Format Cause And Countermeasure Analysis | Place of Origin | CHINA |
| Brand Name | OEM | Certification | ISO |
| High Light | Shrinkage injection moulding solutions ，injection moulding solutions OEM ，ISO injection moulding solutions | ||
The Cause And Countermeasure Analysis Of Shrinkage In Products
Reprint Books In A Reduced Format
Shrinkage refers to the depression of the product table and the production of insects, like hair in the thicker part of the wall. In the process of cooling the molten resin from the external part, when the volume shrinkage cannot be compensated, the resin on the surface of the formed product is subjected to the volume shrinkage of the molten resin in 6 parts, resulting in the formation of q marks.
| Cause | Cuntermeasure | |
| Forming condition |
1. There are many cases of insufficient pressure and retaining pressure during the injection period 2. The pressure retention time is insufficient 4. The mold temperature is not appropriate, the mold temperature is too low, the gate curing fast, pressure retention failure is easy to produce shrinkage hole: the mold temperature is too high, setting the appropriate mold temperature is easy to produce shrinkage marks 5. The injection speed is too fast The temperature of the material is too high, and the shrinkage of the material is too large |
1. Increase the injection pressure and pressure holding pressure; 2. Increase the pressure raising time 3. Increase the measurement distance 4. In thick products, this tendency is stronger and the speed is reduced 5. Properly reduce the temperature of the material
|
| Die |
1. The runner and gate are too small. 2. Improper placement of pouring II makes the material flow distance too long 3. Insufficient or inconsistent mold cooling
|
1. Increase the section of runner and gate 2. Review runner and gate 3. Check the cooling system
|
| Product Design |
1. Uneven thickness 2. The shape of tendons is not standard
|
1. Avoid uneven thickness, can use stolen thick pin or groove. 2. Avoid thick and long tendons |
| Material |
1. The shrinkage rate of materials is too large 2. Poor material fluidity
|
1. Switch to materials with low shrinkage 2. Improve material mobility |
| Other | Screw check ring is damaged | Replace the check ring |
Company Details
Business Type:
Manufacturer
Year Established:
1997
Total Annual:
18000000-22000000
Employee Number:
1~1000
Ecer Certification：
Site Member
Sun On was founded in 1997. After years of development, we gradually bloomed into a diversified manufacturing factory, with Product Design, Rapid Prototype, Molds Making, Plastic Injection Production, Die Casting Alloy Production and Precision Parts Machining. together with surface fini... Sun On was founded in 1997. After years of development, we gradually bloomed into a diversified manufacturing factory, with Product Design, Rapid Prototype, Molds Making, Plastic Injection Production, Die Casting Alloy Production and Precision Parts Machining. together with surface fini...
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