関東製作所 List of Products and Services

This document is a handbook introducing injection molding and blow molding technologies for development and design engineers. It includes features of injection molding and blow molding, examples of solutions to typical problems in injection molding, and key points in the design of blow molding. Please feel free to contact us for quotes or any questions regarding our services. [Contents] ■ Features of injection molding and blow molding ■ Collection of typical problems in injection molding ■ Collection of design points in blow molding ■ Publisher information (Introduction to Kanto Manufacturing) *For more details, please refer to the PDF document or feel free to contact us.

• Injection Molding Machine

This document is a technical material summarizing the advantages and disadvantages of plastics. In the plastic industry, we create products in various fields by leveraging the advantages and covering the disadvantages while effectively combining the characteristics of raw materials. We introduce not only the advantages, such as "lightweight" and "excellent processability, enabling mass production," but also the disadvantages. [Contents] ■ Advantages of Plastics ■ Disadvantages of Plastics *For more details, please refer to the PDF document or feel free to contact us.

• Injection Molding Machine

This document is a technical resource that introduces the advantages and disadvantages of the representative power sources needed for injection and clamping: "electric" and "hydraulic." For example, while "electric" systems are 30-40% more energy-efficient compared to hydraulic systems, "hydraulic" systems have the advantage of being less expensive and easier to set conditions (with a wider range). Additionally, the advantages and disadvantages of both "electric" and "hydraulic" systems are detailed. [Contents] ■ Advantages and disadvantages of "electric" systems ■ Advantages and disadvantages of "hydraulic" systems *For more details, please refer to the PDF document or feel free to contact us.

• Injection Molding Machine

This document is a technical material that introduces the process of "injection molding," which is one of the representative molding methods for plastics, along with the mechanism of injection devices, using illustrations. It clearly explains the mechanism of the injection device and one cycle of the injection molding machine in a flowchart format. Additionally, it includes example photos of parts from plastic models, which are one of the representative products made through injection molding. [Contents] ■ About injection molding ■ Names of various parts of the injection molding machine ■ Mechanism of the injection device ■ One cycle of the injection molding machine *For more details, please refer to the PDF document or feel free to contact us.

• Injection Molding Machine

This document provides a clear explanation of molds, including their characteristics, terminology, plastic shrinkage, the necessity of draft angles, runners, and gates, using numerous diagrams and photographs. Additionally, the latter part of the document covers the types of molds, undercut processing for creating grooves or holes on the product side for extraction, and the necessary clamping force. 【Contents (excerpt)】 ■ Characteristics of molds ■ Necessity of draft angles ■ Runners and gates ■ Types of molds ■ About undercut processing *For more details, please refer to the PDF document or feel free to contact us.

• Other molds

Shrinkage caused by the contraction of resin during curing pulls the interior, resulting in a depression on the surface of the molded product. The main cause is the variation in shrinkage due to differences in the thickness of the plastic. In response, measures such as lowering the resin temperature and injection speed can be taken. This document introduces typical undesirable cases in injection-molded products, including shrinkage, voids, short shots, and burrs, along with their main causes and countermeasures, using photographs for illustration. [Contents (excerpt)] - Shrinkage - Voids - Short shots - Burrs - Weld lines *For more details, please refer to the PDF document or feel free to contact us.

• Injection Molding Machine

We handle injection molding molds for automotive interior and exterior parts as well as functional components. We also accommodate molding for decorative items such as decorative molding. Among these, we specialize particularly in deep molds, capable of producing up to 1,300 tons. We provide consistent support from design to inspection and delivery! 【Features】 ■ We can produce super-large molds exceeding 2,000 tons, including those from partner manufacturers. ■ Our machinery and equipment can handle large items in a short time. ■ We can accommodate prototyping and small lots with molding machines of various sizes. *Typical troubles in injection molding are clearly visible! A must-see technical handbook for engineers is available! For more details, please contact us or download the PDF to view it.

• Other molds
• Contract manufacturing
• Processing Contract

The blow molding business handles a wide range of molds, including ducts, tanks, panels, and spoilers for automotive parts, as well as large molds over 2 meters, such as those for nursing beds and temporary toilets, up to 1,000 liters. We also welcome inquiries about small molds for containers used in food, pharmaceuticals, and seasonings. 【Features】 ■ Achieves shortened delivery times and cost reductions with high-precision equipment ■ Capable of handling large products over 2 meters ■ Aluminum buildup and welding technology to accommodate sudden design changes and mold repairs * A technical handbook that clearly outlines design points in blow molding is currently available for designers! For more details, please contact us or download the PDF to view it.

• Other molds
• Contract manufacturing
• Processing Contract

Our company conducts "blow molding" to obtain hollow plastic products. We primarily manufacture molds for automotive parts such as ducts, tanks, panels (sheet-like hollow products), and spoilers. We are also capable of producing molds ranging from small containers for food use to molds of about 1000 liters, receiving inquiries and applications from many fields. 【Features】 - We manufacture processing machines used for post-processing such as drilling, cutting, finishing, welding, and machining in-house. - We can design with consideration for subsequent processes, enabling efficient mold and processing machine production. - Since we can design processing machines from the start of production, we achieve a total reduction in delivery time. *For more details, please download the PDF or contact us.

• Processing Contract
• Blow Molding Machine