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Defects analysis of injection molded products - Bubbles Jan 17, 2020
Bubbles are the phenomenon of small volume or series of pores formed inside the product. A large amount of gas is mixed into the melt and is formed by cooling the melt. 1. Venting system is bad or blocked 2. The cooling system is not setting properly, which makes the material cooling uneven or insufficient. 3. The injection speed is too fast 4. The material temperature is too high, which will caus...
- injection molded products
- mould cooling
- plastic filling analysis
Common injection molding product defects and solutions-6 Jan 17, 2020
Burr the reason: 1.Insufficient clamping force. 2.The injection pressure is too high. 3.Injection speed is too fast. 4.The holding pressure switch is too late. 5.Insufficient mold support. 6.Defect of mold parting surface. 7.The melt temperature is too high. 8.Low viscosity. Solution: 1.Reduce filling speed or holding pressure. 2.Improve the clamping force. 3. Change the position or method of hold...
- mold Filling
- injection molding machine
- plastic mold Filling
What is the extrusion mold? Mar 27, 2020
Extrusion mold is a kind of molding mold, but its way of molding is extrusion. It is widely used in aluminum shaped structures and also in plastic parts. In the front of the extruder, used to make pipe or profile. In short, a mold is a tool used to form an object. The tool is made up of various parts. Different molds are made up of different parts. It mainly processes product by ...
- Extrusion mold
- Plastic light cover
- plastic part
Tips for injection molding of nylon cable ties Apr 10, 2020
1. Pay attention to mold temperature If the lower temperature of the heat-resistant and abrasion-resistant nylon cable ties in the production, the faster the material cooling rate in the mold cavity, so that it can greatly shorten the take-out time of the product and improve the efficiency of the molding operation. However, if the temperature is too low, it will easily cause the appearance of the ...
- cable tie production
- nylon cable tie molding
- plastic cable tie mold
Common injection molding product defects and solutions-7 Apr 10, 2020
Weld line Causes: 1. The product design is unreasonable. 2. The injection speed is too slow. 3. Injection pressure is too low. 4. The injection time is too short. 5. The mold surface temperature is too low. 6. Insufficient exhaust. 7. The gate position is unreasonable. 8. The melt temperature is too low. Solutions: 1. Increase the material temperature. 2. Improve injection speed. 3. Increase the m...
- mold Filling
- injection molding machine
- plastic mold Filling
The inner undercut of the product cannot be used as a lifter, what mold structure should be used? Apr 22, 2020
We all know that products have undercut, usually, the inner undercut of the product is generally released by a lifter, and the outer undercut of the product is released by a slider. When the inner undercut of the product cannot be used as a lifter, what structure do we use? As shown below: Encounter this type of product, can not do lifter, can only consider the inner slider core pulling. The...
- plastic injection mold
- injection mold design
- undercut problem
Common injection molding product defects and solutions-8 Apr 26, 2020
Cell the reason: 1. Holding pressure is too low. 2. The holding time is too short. 3. The injection speed is too fast. 5. The back pressure is too low. 6. The mold temperature is too low. 7. The product is too thick. 8. Melt temperature is too high. Solution: 1. Increase the back pressure of the melt. 2. Reduce the reverse rope. 3. Increase holding pressure. 4. Increase holding time. 5. Reduce the...
- mold Filling
- injection molding defects
- plastic mold Filling
Defects discussion of plastic molded parts Apr 30, 2020
Today we are going to discuss the injection defects of burn marks. 1. Poor venting, the residual gas in the cavity generates high temperature due to adiabatic compression 2. The surface of the cavity is not smooth enough to easily adhere a small amount of plastic, which is easily scorched by high temperature, and then mixed into the melt 3. The melt temperature is too high 4. Injection pressure is...
- plastic molded parts
- injection defects
- injection molding part

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