About Rubber Molds
December 8, 2023
About Rubber Molds Common Types of Rubber Molds In the manufacturing of rubber molds, some commonly used mold types include: 1. Open Molds Open molds
How to Avoid Short Shot in Plastic Products?
About the short shot
1. Phenomenon of short shot
An incomplete phenomenon in which the resin is not completely filled. And this is called short shot.
2. Causes of short shot
- Overly runner/gate diameter
- Long runner
- Large flow resistance in cavity
- Poor degassing of sprue and runner
- Insufficient air escape in the mold
- Lack of supply
- Insufficient injection pressure
- Slow filling speed
- Low resin temperature
- Low mold temperature
3. Measures to avoid short shot
- Increase runner/gate size
- Review runner placement
- Change the position of the gate
- Provide sufficient gas venting to the sprue and runner
- Vent the unfilled part
- Degas just below the sprue part and at the runner end.
- Increase the air vent near the final filling part of product.
- Optimum material supply
- Increase injection pressure, injection speed, cylinder temperature, mold temperature
- It occurs when it is difficult to fill due to vent clogging.
- By taking good venting measures with the mold, there is no air resistance in the mold and molding at low pressure is possible.
Related Post
Methods for Reducing Injection Molding Costs
November 17, 2023
Methods for Reducing Injection Molding Costs Methods for Reducing Injection Molding Costs 1. Production Workshop The layout of the production workshop is designed with a
Assessment of Mold Product Damage and Care Measures in the Injection Molding Workshop
November 6, 2023
Assessment of Mold Product Damage and Care Measures in the Injection Molding Workshop How to Identify the Location of Mold Product Damage and Perform Repairs?
Analysis of Injection-Molded Product Coating and Plating Processes
October 19, 2023
Analysis of Injection-Molded Product Coating and Plating Processes Surface Treatment of Plastic Products primarily includes Coating and Plating Processes. Typically, plastics have high crystallinity, low