The part has a wall thickness of 0.5mm with high TPE viscosity, which causes short shots during trial molding because the material only fills 75% of the mold while the distal end experiences scorching damage.
The sealing ring groove has a tolerance of 0.02mm, but the initial CPK value stands at 0.8. The project needs ISO 13485 certification to proceed, but ordinary molds cannot meet the required standards, which leads to project delays and $10,000 extra trial molding costs.
Solution (Executed by JS Precision)
JS Precision created custom soft plastic injection molds, which they enhanced through three different enhancements.
1. Mold Design:
The needle valve hot runner gate location needed redesigning, so we placed the new gate at the mold cavity's most remote point.
Our team developed a parting surface with a 0.008mm-0.01mm deep vacuum venting groove, which enables automatic gas release from the cavity to eliminate two problems caused by incomplete injection and excessive heat.
2. Thermal Management:
The cooling system includes 3D printed conformal cooling inserts, which maintain precise temperature control within the mold by limiting temperature changes to less than 1.5℃.
The system helps maintain material dimensions because it controls temperature changes, which TPE materials use to shrink. The system achieves both functions by managing temperature shifts, which TPE materials use to contract.
3. Surface Treatment:
The core is treated with vacuum chrome plating, with a thickness controlled at 30μm. The steel surface is filled with micropores to prevent oil and impurities from accumulating, ensuring the cleanliness of the injection mold parts. At the same time, we complete the mold assembly and testing in an ISO 13485 certified cleanroom to avoid any contamination.
最終結果
The first trial molding achieved a 100% fill rate, while the defect rate decreased from 25% to 0.8%, which resulted in monthly savings of $5,000. The CPK value reached 1.42, and 500,000 units passed inspection with a tolerance of ±0.02mm.
The product achieved ISO 13485 and FDA certification, which enabled its launch three weeks before the planned date. The complete verification documentation system decreased audit communication costs while helping customers gain a competitive advantage.
<ブロック引用>
Want to replicate this success story? View complete case studies of medical grade soft plastic injection molds and contact us for customized solutions to quickly solve your mass production challenges.
Figure 4: Three injection molded parts in orange and blue colors, displayed to showcase their cleanliness and lack of burrs, suitable for medical-grade applications.
FAQs
Q1: What are the main differences between soft plastic injection molds and hard plastic molds?
Soft plastic injection molds require more precise venting systems (0.01mm level) and special demolding mechanisms to handle the high elastic deformation of soft plastics, while hard plastic molds do not require such high venting precision and special demolding designs.
Q2: What is the highest precision achievable in soft plastic injection molding?
Precision soft plastic injection molds can stably achieve a tolerance of ±0.02mm. The specific precision depends on the part structure and material, for complex parts, the precision can be controlled within ±0.03mm.
Q3: What is the typical mold delivery cycle?
JS Precision's standard sample delivery cycle for soft plastic injection molds is 45 days. The company can complete rush projects within 30 days, which helps customers who need urgent production.
Q4: How to solve the flow mark problem on the surface of TPE injection molded parts?
By optimizing the gate position of soft plastic injection molds, improving mold temperature uniformity, and adjusting the injection speed curve, it is possible to effectively eliminate flow marks on the surface of TPE injection molded parts and enhance product appearance.
Q5:Can you provide medical grade injection mold parts?
JS Precision operates an ISO 13485 cleanroom facility where it assembles molds and provides complete validation documentation to guarantee that its injection mold parts meet both medical grade cleanliness and precise operational standards.
Q6: What is the expected lifespan of the molds?
The standard lifespan of soft plastic molds is 100,000 to 500,000 cycles. The lifespan of soft plastic injection molds produced from powder metallurgy steel extends beyond 500,000 cycles.
Q7: How does JS Precision handle mold trial acceptance for overseas customers?
JS Precision provides overseas customers with high definition mold trial videos, full size reports, and T1 sample international express delivery services to ensure customers clearly understand the mold trial results.
Q8: Do you provide mold design optimization services?
Yes, all soft plastic injection molds orders include a 24-hour response DFM report. Engineers will provide professional design optimization suggestions regarding the feasibility of part molding.
Summary
The core of soft plastic injection molding is balancing four essential elements which include precision and efficiency and cleanliness and cost through the use of professional soft plastic injection molds.
The combination of data driven technology and strict quality control and 45-day delivery capability enables JDS Precision to implement mass production processes for injection molded plastic components which provide customers with total project control.
Product launches must not be delayed because of mold problems. Send your 3D drawings to info@cncprotolabs.com now to receive free 24-hour DFM analysis and project assessment. Let JS Precision's soft plastic injection molds safeguard your success.
Disclaimer
The contents of this page are for informational purposes only.JS Precision Services,there are no representations or warranties, express or implied, as to the accuracy, completeness or validity of the information. It should not be inferred that a third-party supplier or manufacturer will provide performance parameters, geometric tolerances, specific design characteristics, material quality and type or workmanship through the JS Precision Network. It's the buyer's responsibility Require parts quotation Identify specific requirements for these sections.Please contact us for more information.
Our factory is equipped with over 100 state-of-the-art 5-axis machining centers, ISO 9001:2015 certified.当社は、世界 150 か国以上のお客様に、迅速、効率的、高品質の製造ソリューションを提供しています。少量生産でも大規模なカスタマイズでも、24時間以内の最速納期でお客様のニーズにお応えします。 Choose JS Precision this means selection efficiency, quality and professionalism. To learn more, visit our website:www.cncprotolabs.com
日本語 
