Nagaura Factory, Ltd.

Design of molds for plastic / Plastic product manufacturing / Manufacturing of finely-machined products using laser processing machinery


List of Mold-Compatible Steel and Resins

Plastic (Resin)

  • PMMA (Acrylic)
  • PBT
  • LCP (Liquid Crystal Polymer)
  • General Purpose Materials
  • Engineering Plastics
  • PPS (Polyphenylene Sulfide)
  • PEEK
  • Elastomer
  • Urethane Resin


  • NAK
  • DC-series Tempered Steel
  • SKD-series Tempered Steel
  • Cemented Carbide
    (Mainly laser processed)

Nagaura Factory, Ltd. > Product Planning and Development

Product Planning and Development

We handle an extensive variety of products from design to production to manufacture under the best conditions.

We make efforts to apply our customer's standard of craftsmanship towards making a variety of products under the best conditions by consulting extensively with the customer from the product planning stage until final manufacturing.

Injection Molding

We integrate the process from the design and production of the mold to the final injection molding process.
We perform injection molding using a variety of plastics including super engineering plastics and two-color molds.
If you need high precision plastic components for new product development or if you're searching for a mold maker that can perform precision injection molding, feel free to consult with us!

  • Electronic Components (DVD, Automobile GPS Systems)
  • Machine Tool Components
  • Various Precision Gears
  • Camera and Optical Equipment
  • Components for Cosmetic Articles
  • Medical Devices
  • Stationery
  • Exterior Components
  • Automotive Components
  • Office Equipment Components (Copiers, Printers)

Our Company's Strengths

  • Leveraging our varied and extensive experience in the manufacture of molds, we make efforts to handle the repair and maintenance of molds that are difficult to have serviced because they were made overseas or by manufacturers who have gone out of business.
  • Hereafter, we'll proactively seek to investigate and establish novel and challenging techniques for the manufacture of molds, including such methods as the use of fluorine, while keeping in mind shorter delivery times and cost reduction.
  • Furthermore, by incorporating techniques such as laser processing that are not found at other companies, we will seek to expand the market in areas pursuing security and design and in product and medical system development.


By responding to customers' sophisticated demands on an extraordinarily wide variety of products ranging from those demanding a high degree of precision, such as cameras, medical systems, and engine cylinder-related parts, to those demanding a refined exterior appearance, such as cosmetic and stationery products, our company has established a body of know-how out of accumulated experience and results.

The Strength of Proposals

In addition to the wealth of experience in various product fields, we have also established mold design techniques for a huge variety of resins (from materials compounded with glass and metals to specialty mirrored surfaces). We have attained the trust of many customers for our proactive handling of mold proposals including proposals for improvements on shaping ability (moldability/releasability) for products.


We arrange for an environment that can handle mold manufacturing prioritizing speed by leveraging our network.

Rotating Ejection

By capitalizing on the techniques of master production for the knobs and drive-type parts we produced when first launched, we have accumulated a wealth of accomplishments concerning rotating-type molds for worm and bevel gears and for twisted components such as screws.

Laser Processing

We possess stage-equipped three-dimensional laser processing machinery unlike that at other companies and implement micro-processing at a minimum diameter of 0.03mm even with hard-to-process materials such as cemented carbide, various kinds of ceramics, and diamond materials.

Practical Scope for Mold Production

We handle a wide variety of cassette type molds up to 400t.
(Chiefly, we handle mold sizes between 30t and 250t)

Mold Resins Handled

  • Super Engineering Plastics (PPS, Polysulphone, PEEK, PAI, ULTEM™, LCP, Fluoropolymers etc.; various types including medical systems and connectors)
  • Engineering Plastics (PA, POM, PC, PBT, Elastomers etc.; various kinds of driving types, office equipment, home appliances)
  • Other General-Use Resins (for exterior parts and food products etc.) and Special Resins such as MIM etc.

Molds Handled
Product Manufacturer

  • Office Equipment-Related (Canon, Ricoh, XEROX, Konica Minolta, Epson)
  • Home Appliance-Related (Panasonic, Sony, Sharp, Hitachi)
  • Medical Systems (Olympus, Omron)
  • Camera, Machine Components (Canon, Nikon, Konica, NSK)
  • Cylinder, Pump Systems (SMC, Matsushita [Panasonic], Paloma, Corona)
  • Automotive (Denso, Nissan, Honda)
  • Cosmetics/Stationery (Shiseido, Kanebo, Tombow, Pentel, Kokuyo)

We also handle these:

In the category of molds

Fields in which we expect to grow domestically hereafter.
Medical device-related areas (including, by extension, the healthcare industry).
Robotics industry-related areas (Japan's leading technology).
Prototype development areas necessary and related to the above.

In the category of laser processing Areas

Areas capitalizing on fine yet load-free processing
Areas leveraging product security and distinctive techniques
Areas in which design and subtle expression come into play
Areas requiring the processing of difficult materials such as diamond, ceramic, and cemented carbide

Connections with Japanese companies and local companies in other countries

Coordination with businesses who have launched in Southeast Asia
Because the importance of support businesses who solve issues overseas has increased now that mass production overseas is mainstream.
Aim for both receipt of work orders from overseas and the formation of cooperation with manufacturers abroad.

Contact with businesses who have difficulties with repair and modifying molds

For the solution of problems consequent to the cessation of business of domestic manufacturers
Link to the development of new customers by providing solutions for repair, retooling, and rebuilding needs,
which are caused by the culling of mold manufacturers and by the increase in foreign supply.

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