| Condition | Description | Reasons | Solution |
| Condition 1: | Not fully filled at the edge of the mold | Insufficient feeding | Increase the quantity of feeding |
| Molding temperature is too high | Decrease molding temperature | ||
| The closing time of Pressure Machine is too long, and the SMC is solidified before the mold is filled. | Shorten closing time | ||
| Molding pressure is too low | Increase molding pressure | ||
| Feeding area is too small | Increase feeding area | ||
| Condition 2: | Not fully filled in small area on the edge of the mold | Insufficient feeding | Increase the quantity of feeding |
| Material loss before mold closing | more careful discharge | ||
| The distance between upper and lower cavities is too large or the fitting length is too short. | Reduce the fitting clearance and increase the fitting length.If the defect is small,increase the molding temperature or add excess material. | ||
| Condition 3: | Although the entire edge is full filled but some areas are not full filled | Insufficient feeding | Increase the quantity of feeding |
| Air failed to drain | Improve feeding method | ||
| Air in the blind hole cannot be discharged | Use three-half mold structure or allow air to be discharged from the ejector pins.If the defect is small to increase the pressure |
Comparison Hand Lay Up RTM SMC/BMC Molding Temperature/℃ indoor temperature 40-60℃ or i……
Definition of Fiberglass Compression Molding Process: It is a method that a certain amount of moul……
We, Shanghai Olimy Co., Ltd. is the supplier for plastic injection molds&parts,carbon fiber parts,fiberglass products, including parts made via hand lay up, RTM, SMC(compression moulding) processes.
