Blog | Custom Injection Molding,Plastic Mold Maker

The process for injection molding Dec 13, 2019
The Last Shot Stage → Closed mold → Filling → Holding Pressure →Plastic Melting → Part Cooling → Mold Opening → Demolding → The Next Shot Stage During the filling and holding stage, the cavity pressure rises with time. After filling the cavity, the pressure will remain in a relatively static state to supplement the insufficient amount of plastic due to shrinkage. This pressure can prevent the resu...
Guangdong Shenzhen Dongguan Mold Processing Factory Services Nov 29, 2019
The mold in the picture is an extrusion molding mold. It is a mold processed by Russia customer at Green Vitality except for the injection mold. The product is an LED light bar mold shell mold. The full processing cycle is 15 working days, and the next step is to customize the wooden box for export to Russia. In addition to injection molds, Green Vitality also has a lot of mold brother factories i...
Short shot Nov 29, 2019
During last articl, We have talked about the factor caused short shot. Today, we are going to talk how to improve it. The improvements are as below: 1. Modify or improve venting structure; 2. Modify or improve gate system; 3. Increase section thickness; 4. Design a suitable cold well; 5. Increase injection speed appropriately; 6. Change the suitable injection machine; 7. Change a large nozzle; 8. ...
- Plastic moul
- Plastic injection mold
- Plastic Products
Common injection molding product defects and solutions-3 Nov 25, 2019
Short shot-1 the reason: 1. The injection pressure is too low. 2. The injection speed is too slow. 3. Injection time is too short. 4. The pressure is too small. 5. The pressure keeping time is too short. 6. The pressure holding switch position is too early. 7. The mold is poorly ventilated. 8. The mold surface temperature is too low. 9. The melt temperature is too low. 10. Material viscosity is to...
- mold Filling
- plastic mold Filling
- injection molding machine
Venting method for plastic Injection mold Nov 25, 2019
Today we are going to discuss several venting methods for the plastic injection mold: 1. Gate venting; 2. Parting surface venting; 3. Inserts and inserts pin venting; For inserts joint cavities or cores, they can be vented by their split gaps. 4. Ejector pin and ejector sleeve venting; The ejector pin and the sleeve are vented with the matching gap of the core. 5. Porcerax venting; Porcerax is a m...
- Porcerax venting
- injection molding
- plastic part mold
Short shot Nov 20, 2019
We are going to talk about one of the most common problem during mould trial--short shot. The factor are as below: 1. It means that the cavity is not completely filled, caused the plastic parts incomplete; 2. The mold venting is not good; 3. The section of gate and runner is too small and long, The melt pressure loses too much during the flow; 4. The thin wall is not thick enough; 5. There is no c...
- Plastic mould
- Plastic injection mold
- Plastic Products
What is the difference between TPU extrusion and injection molding? Nov 20, 2019
Extrusion, also known as extrusion molding or extrusion, is also called extrusion in rubber processing. It means that the material passes through the action between the barrel and the screw of the extruder, and is plasticized while being pushed forward by the screw. A method of processing various cross-section articles or semi-finished articles by head. Injection molding is a method of prod...
Design criteria for plastic injection mold runners Nov 08, 2019
Design criteria for plastic injection mold runners The runner is the first channel for plastic injection molding in the mold. Most of the plastic passes through here and then into the mold cavity and core. Therefore, the position of the runner should not affect the appearance of the product, and must meet the product assembly. When the mold uses pin-point gate, the hot runner plate should have a s...
- plastic injection molding
- hot runner mold
- plastic product mould
Common injection molding product defects and solutions-2 Nov 08, 2019
Air traps the reason: 1. The injection speed is too fast. 2. Back pressure is too high. 3. Insufficient gas, gas encapsulation. 4. The flow channel size is too small. 5. The melt temperature is too high and it is necessary to reduce the shear. Solution: 1. Reduce the injection speed. 2. Clean the air trap in the trapped position. 3. Reduce the clamping force. 4. Reduce the pressure of holding pres...
- mold Filling
- plastic mold Filling
- injection molding machine
What is Double Color Mold? Nov 08, 2019
What is Double Color Mold? Double Injection Mold is also called Two Color Mold. That's two different materials or two color materials injected in one injection machine, injected by twice, but the product only comes out one shot from the mold. This mold technology is called double material injection, usually finished by one set mold, and it needs special two color injection molding machine to produ...
- Double injection mold
- two color mold
- 2K mold

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