Aren't you adjusting the flow rate by cutting the resin flow path yet? I will explain in detail how to adjust the resin flow rate balance.
In the case of problems in irregular extrusion, a wavering phenomenon may occur. Looking at the CAE analysis diagram, it can be seen that the flow rate of the resin in the wavering part is fast, and the amount of resin flowing is large, which indicates that this phenomenon occurs. One method to adjust the resin flow balance is to change the length of the resin flow path (by modifying the internal resin flow path of the mold) or to adjust the slit width of the mold. *For more details, please refer to the middle section of the page. Our company also offers extrusion mold design, prototype molding, and technical development tailored to customer requests, so please feel free to consult with us. 【Overview of Materials】 ■ Method of adjusting by changing the length of the resin flow path - Adjusting the length of the die land ■ Method of adjustment by changing the width (gap) of the slit - Adjusting the gap of the die land *For more details, please refer to the PDF materials or feel free to contact us.
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<Adjustment Method by Changing the Length of the Resin Flow Path> Advantages 1. Since the change in resin amount due to cutting adjustments is not significant, it is easy to adjust. (Easier to predict) 2. Because the change in resin amount due to cutting adjustments is not significant, there are fewer failures from over-cutting. (Fewer failures due to excessive cutting) Disadvantages 1. Cutting corrections take time. 2. Cutting work cannot be done by just anyone; specific skilled workers are required. 3. Since the changes from adjustments are gradual, the number of trial and error instances increases. 4. Cutting can easily change the flow of resin inside the mold. (Cross-flow is more likely to occur, leading to instability in molding) <Adjustment Method by Changing the Width of the Mold Slit (Gap)> Advantages 1. Since it can be handled with wire processing, it takes less time than cutting adjustments. 2. No need for skilled mold cutters. 3. The changes from adjustments are significant, reducing the number of trial and error instances. Disadvantages 1. The change in flow rate is large, making it easy for the change in resin amount to exceed expectations. 2. It is difficult to predict how much to change the slit width. 3. If the prediction is off and the resin flows too much, it cannot be reverted. (In the worst case, it may require remaking.)
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For more details, please refer to the PDF document or feel free to contact us.
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Since its establishment in 1975, we have been a comprehensive plastic molding manufacturer that consistently engages in extrusion and injection molding based on plastic materials, which are the "materials of dreams," from the production of molding processing molds to product assembly. Although our products are not often seen directly by customers, we respond flexibly to social needs such as safety, the environment, and comfort, transforming into various forms to provide products that contribute to our customers' daily lives in housing, home appliances, and transportation. We cherish a free and open corporate culture, think and act with a positive mindset, and strive to evolve as a corporate group where each individual supports the company and embraces change. Moving forward, we will continue to provide high-value-added products and services that meet customer needs with a refined high-production system and excellent quality, based on the philosophy of the SANKYO TATEYAMA Group. We sincerely ask for your continued support and encouragement.
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