FUJI SEIKI Co.,Ltd Product Lineup

Fujii Seiki's precision molds are widely used in the medical, container, and automotive fields. With high-cycle compatibility and long-life design, they achieve both high output and stable quality even with the same molding machine. We conduct optimal design considering the diverse material properties of PET, PP, COP, PVC, K resin, MBS, and others. We newly manufacture extraction jigs (chuck plates) at Fujii Seiki and conduct test molding under conditions equivalent to the customer's line. → By using Fujii Seiki's conditions as a standard, we shorten the startup period on the customer side. → Based on that track record, we are also progressing with new molds for the 2026 operational line. 【Features】 ■ Improved productivity for high-cycle production ■ Cost reduction through high output ■ Excellent compatibility in design ■ Strict management of cavity-to-cavity differences ■ Material selection ensuring durability ■ Consideration for ease of disassembly/assembly, significantly improving maintenance efficiency *For more details, please download the PDF or feel free to contact us.

• Mold Design

The precision molds from Fuji Seiki are widely used in the medical, container, and automotive fields. With high-cycle compatibility and long-life design, they achieve both high output and stable quality even with the same molding machine. We conduct optimal designs considering the diverse material properties of PET, PP, COP, PVC, K resin, MBS, and more. We have achieved a reduction in existing molding time from 25 seconds to 20 seconds! As a result, the freed-up molding machines can be utilized for the production of other products, improving the overall production efficiency of the factory. 【Features】 ■ Improved productivity for high-cycle production ■ Cost reduction through high cavity counts ■ Excellent compatibility in design ■ Strict management of cavity-to-cavity differences ■ Material selection ensuring durability ■ Consideration for ease of disassembly/assembly, significantly improving maintenance efficiency *For more details, please download the PDF or feel free to contact us.

• Mold Design

The precision molds from Fuji Seiki are widely used in the medical, container, and automotive fields. With high cycle compatibility and long-life design, they achieve both high production counts and stable quality even with the same molding machine. We conduct optimal designs considering the diverse material characteristics of PET, PP, COP, PVC, K resin, MBS, and more. We faced challenges in quality stability due to variations in molding conditions. → By optimizing shapes and reviewing cooling circuits, we have achieved stabilization in molding! This case study supports continuous improvement by building a "consultative relationship" with customers. 【Features】 ■ Improved productivity for high cycles ■ Cost reduction through high-volume production ■ Excellent compatibility in design ■ Strict management of cavity-to-cavity differences ■ Material selection ensuring durability ■ Consideration for ease of disassembly/assembly, significantly improving maintenance efficiency *For more details, please download the PDF or feel free to contact us.

• Mold Design

The precision molds from Fuji Seiki are widely used in the medical, container, and automotive fields. With high-cycle compatibility and long-life design, they achieve both high output and stable quality even with the same molding machine. We conduct optimal design considering the diverse material properties of PET, PP, COP, PVC, K resin, MBS, and more. The semi-hot specification for 20 cavities has been upgraded to a full hot runner with 24 cavities. In the medical field, where precision requirements are strict, we achieve high precision in release properties and temperature control. By fully implementing hot runner technology, we reduce waste and increase production volume per shot. 【Features】 ■ Improved productivity for high-cycle production ■ Cost reduction through multiple cavity designs ■ Excellent compatibility in design ■ Strict management of cavity-to-cavity differences ■ Material selection ensuring durability ■ Consideration for ease of disassembly/assembly, significantly improving maintenance efficiency *For more details, please download the PDF or feel free to contact us.

• Mold Design

The precision molds from Fuji Seiki are widely used in the medical, container, and automotive fields. With high-cycle compatibility and long-life design, they achieve both high output and stable quality even with the same molding machine. We conduct optimal designs considering the diverse material properties of PET, PP, COP, PVC, K resin, MBS, and more. We implemented improvement proposals while multiple molds were operating simultaneously, achieving a doubling of output from 4 to 8 pieces and reducing the cycle time from 25 seconds to 12 seconds! We identified bottlenecks that the customer was unaware of and significantly improved production capacity through increased output and optimized cooling. 【Features】 ■ Increased productivity for high-cycle production ■ Cost reduction through high output ■ Excellent compatibility in design ■ Strict management of cavity-to-cavity differences ■ Material selection ensuring durability ■ Consideration for ease of disassembly/assembly, greatly improving maintenance efficiency *For more details, please download the PDF or feel free to contact us.

• Mold Design

The precision molds from Fuji Seiki are widely used in the medical, container, and automotive fields. With high-cycle compatibility and long-life design, they achieve both high output and stable quality even with the same molding machine. We conduct optimal designs considering the diverse material properties of PET, PP, COP, PVC, K resin, MBS, and more. Challenge: Resin burrs caused by thickness variation in laminated press products → We propose an optimal flow balance design to resolve quality issues! For high-difficulty molding challenges, we utilize flow analysis for gate placement and balance design, suppressing burr occurrence through optimization on the mold side. This has improved production stability. 【Features】 ■ Increased productivity for high-cycle production ■ Cost reduction through multiple cavity designs ■ Excellent compatibility in design ■ Strict management of cavity-to-cavity differences ■ Material selection ensuring durability ■ Consideration for ease of disassembly/assembly, significantly improving maintenance efficiency *For details, please download the PDF or feel free to contact us.

• Mold Design

Fujii Seiki's "High Cycle Molds" excel in disassembly/assembly and maintenance, making them exceptional precision molds. There are cases where the number of cavities has been expanded from 4 to 8 using the same size molding machine, achieving a cycle time of 5 seconds with a 280t molding machine. The CD case mold, which traditionally operated at 220t with an 8-second cycle, has seen a dramatic increase in productivity with our specifications, now achieving 8 cavities at 280t with a 5-second cycle. We would like to introduce examples of how we have supported further efficiency through technical proposals! [Content Highlights (excerpt)] ■ Runner-less design: Reducing resin loss & increasing cycle speed ■ Product shape & runner optimization: Improved release and cooling properties ■ Material change: Enhanced thermal conductivity for better cooling efficiency ■ Cooling circuit optimization: Design based on thermal and flow analysis [Main Features] ■ High cycle: 5-second cycle with 8 cavities at 280t ■ Full hot runner: Reduced from 22 seconds to 15 seconds ■ Cooling optimization: Circuit design utilizing analysis ■ Enhanced multi-cavity capability, compatibility, and durability Discover why Fujii Seiki's precision molds can achieve these results with our technical documentation available! *For more details, please download the PDF or feel free to contact us.

• Mold Design

One of the reasons why maintenance of plastic molds is necessary is that gases generated during molding can liquefy and adhere to the mold. Fuji Seiki's plastic molds and precision molds are designed with appropriate air vents and air grooves according to the resin used and the shape, achieving high gas venting efficiency. Currently, we are offering technical materials that can help reduce mold maintenance costs. [Contents] ■ Gas venting measures for plastic molds ■ Wear and seizure countermeasures ■ In-house heat treatment ■ Maintenance period ■ Feedback from customers who have introduced plastic molds *For more details, please refer to the PDF document or feel free to contact us.

• Mold Design

Fujii Seiki is a precision mold manufacturer highly regarded in the medical, container, and automotive industries. We have established a design and support system to ensure that molds developed domestically can operate with the same quality on overseas production lines. We achieve both stable mass production and rapid maintenance. We pursue both production efficiency and quality through high-cycle compatibility, long-life structures, and cavity precision management. Our multi-cavity designs also contribute to reducing production costs. [Achievements] Medical devices (blood collection tubes, pipettes) / Containers and scientific supplies (COP barrels, TP outer) / Automotive parts (over caps) Experience our mold technology that realizes "stability," "precision," and "long life" in all processes. [Specific Cases] - Blood collection tubes (PET / 32 cavities) / Pipettes (PP / 48 cavities) - COP barrels (COP / 8 cavities) / TP outer (PVC, K resin, MBS / 48 cavities) - Over caps (PP / 32 cavities) Furthermore, we offer optimal molding environments with our mold plus additional proposals! *For more details, please download the PDF or feel free to contact us.

• Mold Design

The molds from Fuji Seiki boast a wealth of manufacturing achievements in the medical, container, and automotive industries. We pursue quality and productivity, achieving a variety of production quantities with molding machines of the same size. We implement mold designs that accommodate various materials. With structural designs that consider the diverse material properties of PET, PP, COP, PVC, K resin, and MBS, we realize high-quality molded products. After domestic development, we have established a maintenance system that can be used safely overseas, providing prompt support. ■ Introduction of Manufacturing Achievements 【Medical Related】Blood Collection Tubes (Material: PET, Quantity: 32)・Pipettes (Material: PP, Quantity: 48) 【Container and Scientific Related】COP Barrels (Material: COP, Quantity: 8)・TP Outer (Material: PVC/K Resin/MBS, Quantity: 48) 【Automotive Related】Over Caps (Material: PP, Quantity: 32) 【Features】 ■ Improved productivity with high cycle rates ■ Cost reduction through high quantity production ■ Excellent compatibility in design ■ Strict management of cavity-to-cavity differences ■ Material selection ensuring durability ■ Consideration for ease of disassembly/assembly, significantly improving maintenance efficiency Furthermore, we propose optimal molding environments with mold + α. For more details, please download the PDF or feel free to contact us.

• Mold Design

The "Quality Control System Equipped Molds" from Fuji Seiki achieves thorough traceability from design and manufacturing to the operational phase after delivery. Measurement inspection data for mold components and die sets is recorded and stored for over 10 years, allowing for rapid identification of causes in the event of dimensional defects. By comparing with past data, it also supports decisions on replacing worn parts and adjusting target values, strongly aiding in stabilizing molding quality. In collaboration with domestic and international production bases, we flexibly respond to dimensional and appearance inspections of molded products. This includes regular inspections after trial molding, maintaining high precision mold quality even in long-term operations. ■ Features - Centralized management of measurement data: Dimensional inspection records for mold components and die sets stored for over 10 years. - Early identification of defect causes: Immediate identification of causes through record verification in the event of dimensional defects. - Support for judgment on part wear: Usable for decisions on replacing worn parts and adjusting target values. - Molded product inspection support: Capability to conduct dimensional and appearance inspections of product samples. *For more details, please download the PDF or feel free to contact us.

• Mold Design

The "Confirmation TRY Mold" from Fuji Seiki has six molding machines ranging from 75t to 650t in-house, and conducts pre-TRY with actual injection for all molds. By completing mass production preparations during the prototype stage, from setting molding conditions to appearance evaluation, we achieve immediate startup and production stabilization after delivery. The maximum mold size can accommodate up to 1000mm. While based on 280t class molds, we can flexibly handle small to large parts. ■ Benefits of In-House Prototyping: TRY verification is conducted on all molds using in-house molding machines. All processes from mold operation, appearance evaluation, to setting molding conditions are completed in-house. Verification can be performed in a real environment close to the target cycle. Deliveries come with actual data, minimizing on-site trials. This is especially recommended for those struggling with trial and error or condition setting after implementation. By predicting issues and streamlining adjustment work, we support the quickest possible startup of mass production. *For more details, please check the PDF document or feel free to contact us.

• Mold Design

The "Durable Molds" from Fuji Seiki are designed with high quality backed by a durability record of over 10 million shots. With more than 650 maintenance cases for molds produced between 1996 and 2005, including repairs and spare parts support, we achieve long life and stable operation. Furthermore, by thoroughly implementing the following five precision management practices, we ensure even greater molding stability and longevity. ■ Features - Heat treatment management using in-house quenching equipment: Processed under optimal conditions for each part - Thickness precision of mold bases managed to ±5μm: Stable mold alignment accuracy - High-precision measurement of part dimensions and traceability: Minimization of defect rates - CAE calculation design of clamping pressure receiving surfaces: A robust structure that withstands resin pressure - Optimal gas vent structure design: Reduction of molding defects and corrosion risk measures *Please feel free to contact us for more details, as this may vary depending on the molding materials.

• Mold Design

Fujiseiki's "Mold for Minimizing Cavity Differences" delivers peace of mind and high precision. Even in mass production or multi-cavity operations, it minimizes dimensional differences across all cavities to the utmost limit, significantly reducing defect rates in subsequent processes. In mold processing, we thoroughly manage component precision, minimizing even slight processing errors. This effectively suppresses variations between individual products that are likely to occur during mass molding. Furthermore, during the mold design phase, we utilize flow analysis (CAE) to optimize the filling balance for each cavity, preventing resin flow irregularities that can lead to dimensional errors. ■ Features - Temperature distribution simulation: Achieves uniform temperature control across all cavities - Injection pressure sensor: Detects and corrects pressure variations in real-time - Three-dimensional measuring machine: Samples and centrally manages dimensional data - High-precision molding compatibility: Adapts to strict tolerances in fields such as medical and electronics *For more details, please download the PDF or feel free to contact us.

• Mold Design

We introduce the features of Fujiseiki's "compatible molds" that deliver peace of mind. Designed with a focus on exchange precision, disassembly and assembly can be carried out smoothly. After replacing parts, production can be resumed immediately, significantly reducing line downtime. Furthermore, spare parts are ensured to have good quality regardless of which CAV they are used in, achieving efficiency in parts management and rapid recovery response. Maintenance has also become easier, contributing to reduced work time and avoidance of reliance on specific personnel. While alleviating the burden on operators, we support increased equipment operating rates. 【Main Features】 ■ Easy disassembly/assembly: Reduces work burden with minimal tools ■ Rapid production recovery: Line can be restarted immediately after part replacement ■ Improved maintainability: Shortens work time and increases operating rates ■ Compatibility among multiple molds is also realized, minimizing production downtime during troubles *For more details, please download the PDF or feel free to contact us.

• Mold Design

We introduce the high-efficiency "mold" solution from Fuji Seiki that delivers peace of mind. The key feature is the ability to achieve the maximum number of parts produced with molding machines of the same size. In the case of medical components, where it has been difficult to increase the number of parts with conventional molding machines, our company has significantly improved the production volume per unit time even with molding machines of the same size by optimizing the structure and flow path design. For example, the syringe (lock) mold accommodates 48 parts, and the needle cap (hot runner) mold accommodates 144 parts. As a result: - Productivity increased by 150% with existing molding machines - Expansion of production volume with one size smaller molding machines - Minimization of molding equipment investment costs 【Main Features】 ■ High number of parts: Syringe 48 parts / Needle cap 144 parts compatible ■ Compatibility: High-efficiency operation with the same size molding machines *For more details, please download the PDF or feel free to contact us.

• Mold Design

Delivering peace of mind, Fujiseiki's "High Cycle Molds." Excellent disassembly/assembly characteristics and outstanding maintenance capabilities. Expanded from 4-cavity to 8-cavity using the same size molding machine, achieving a cycle time of 5 seconds with a 280t molding machine. The conventional 220t mold for CD cases, which had a cycle time of 8 seconds, has dramatically improved productivity to 8-cavity 280t with a cycle time of 5 seconds in our specifications. Additionally, by transitioning from the conventional cold runner structure (22 seconds) to a fully hot runner system, we have achieved high-speed molding in 15 seconds. This contributes to reducing runner waste and supports high cycle production. Furthermore, we support further efficiency improvements with the following technical proposals: ■ Runner-less design: Reducing resin waste & enabling high cycles ■ Optimization of product shape and runner: Improving release and cooling properties ■ Material changes: Enhancing thermal conductivity for better cooling efficiency ■ Cooling circuit optimization: Design based on thermal analysis and flow analysis *For more details, please download the PDF or feel free to contact us.

• Mold Design

We would like to introduce our molds that reduce maintenance costs. As a "gas venting measure for plastic molds," we install appropriate air vents and air grooves according to the resin used and the shape, achieving a structure with high gas venting efficiency. We also consider the balance of protrusions after molding, setting clearances for each resin, and selecting appropriate steel materials and surface treatments for parts that operate and slide to ensure corrosion and wear resistance, implementing "wear and galling measures." Additionally, we conduct "in-house heat treatment" for the purposes of suppressing aging changes, improving wear resistance, and stabilizing hardness. We always consider the assembly and disassembly of molds, designing them for easy maintenance. *For more details, please refer to the PDF document or feel free to contact us.

• Mold Design

We would like to introduce our mold design and manufacturing services. Molds are fundamentally based on uniform cooling and simultaneous cooling, but it is important to modify the cooling circuits according to the product shape (such as areas with thick sections). Our company has an appropriate cooling structure based on our unique cooling concept. Additionally, the use of hot runners not only shortens the molding cycle but also reduces the amount of resin materials used. Depending on the resin used, we customize hot runners in-house to accommodate specific needs. We have received feedback from customers stating, "With high cycle times and multiple cavities, we have been able to produce with one molding machine instead of two." *For more details, please refer to the PDF document or feel free to contact us.

• Mold Design
• Resin mold

We would like to introduce a case study on the production of molds for caps and containers that we conducted. Caps are products with a very low unit price, making it difficult to generate profit without mass production, so we were consulted on proposals to reduce costs. Since dynamic assurance of multi-stage punching and accumulated mold design know-how are required, we participate in product design reviews from the development stage and carry out mold production considering flow analysis and weld countermeasures. Additionally, we have a case study on the production of "food containers," which presents the challenge of how to reduce product costs, as they are products that require mass production. *For more details, please refer to the PDF materials or feel free to contact us.

• Mold Design
• Resin mold

We would like to introduce a case study of mold manufacturing in the medical field that we conducted. The "syringe (disposable syringe, pre-filled syringe)" was successfully produced with a mold that increases the production quantity per unit time by increasing the number of cavities while using existing molding equipment, thereby reducing product costs. We also have case studies for other products such as "gaskets," "dialyzers," and "petri dishes (stacked 16+16)." 【Case Overview】 ■ Product: Syringe (disposable syringe, pre-filled syringe) ■ Resin Materials: PP, COP, COC ■ Number of Cavities: 16 to 48 *For more details, please refer to the PDF document or feel free to contact us.

• Mold Design

We would like to introduce examples of injection-molded products related to "automotive components" that our company has produced. For "fuel components," we maintain high quality through product shape proposals that emphasize product strength and quality control that understands product applications. For "electronic components," we have achieved cost reduction in mass production line processes by incorporating considerations for high productivity molds (multiple cavities and high cycle times), which has pleased our customers. In addition, we have numerous manufacturing examples of safety and security components, as well as optical components. For more detailed information, please refer to the PDF download below. [Case Overview (Partial)] <Fuel Components> ■Field: Automotive ■Materials: PPS, PA, POM, etc. (including GF) ■Established a management system to prevent contamination in a clean molding environment ■By managing resin molded components at the micrometer level, we provide peace of mind to our customers *For more details, please refer to the PDF document or feel free to contact us.

• Other Auto Parts
• Fuel system parts
• Other electronic parts

Our "molds for food containers" are capable of producing molds that are free of burrs and provide a pleasant mouthfeel, with no uneven thickness. They can accommodate multiple cavities (12 cavities at 180 tons), high cycles, and long life, allowing for low-cost provision through a full turnkey solution. 【Features】 - No uneven thickness in molding - Stable quality - Low cost *Please feel free to contact us for more details.

• Other molds