Language: 日本語 | English
Language: 日本語 | English
Our company also performs injection molding using bio-plastics.
In particular, we focus on developing and producing products using biodegradable resin “PLA (Polylactic Acid)” made from plant starch and sugars.
This is a new molding solution that achieves a balance of functionality, design, and sustainability.
▪ Features and Technical Examples
- Achieved thin-wall molding with 100% PLA (without blending petroleum-based resins), which was previously considered difficult.
- World-first molding: wall thickness 0.65mm, flow length 135mm.
- Applied long-accumulated know-how from reflector molding, etc.
- Reduced resin usage through thin-wall design.
- Weight reduction using MuCell® (microcellular foaming system).
- Zero scrap with hot runner system.
- CO₂ emission reduction by replacing petroleum-based resins.
▪ Applications and Deployment
- Replacement of petroleum-based products with plant-derived materials.
- SDGs-conscious novelty products to enhance corporate appeal.
◎ Consultation
We handle everything from product planning, collaboration, mold manufacturing to mass production.
Please feel free to contact us for injection molding with resins other than PLA.
We also welcome inquiries for quotations and samples of our original products “Bio7”, “4Tiers”, and “N1”!
◎ Related Articles
PLA Glass “Bio7”: https://ja.nc-net.or.jp/company/1285/product/detail/265575/
PLA Glass “4Tiers”: https://ja.nc-net.or.jp/company/1285/product/detail/265576/
PLA Glass “Foam”: https://ja.nc-net.or.jp/company/1285/product/detail/265581/
Heat-Resistant PLA Mug “N1”: https://ja.nc-net.or.jp/company/1285/product/detail/265578/
◎ Contact
Nissin Precision Machines Co., Ltd. – Head Office
〒146-0095 2-29-21 Tamagawa, Ota-ku, Tokyo, Japan
TEL: 03-3758-1901
E-mail: gn_info@nissin-precision.com
Our company is engaged in the injection molding and sales of bio-plastics.
This time, we would like to introduce our original product, the ultra-thin bio-plastic glass “Bio7”.
▪ Product Information
- Product Name: Bio7
- Material: 100% PLA (Polylactic Acid)
- Capacity: 350mL
- Thickness: 0.65mm
- Dimensions: Rim diameter φ91mm × Height 105mm
- Certifications: BPI certified (certification for safe biodegradable products)
- Compliant with Food Sanitation Law (former Ministry of Health Notification No. 370)
▪ Artisan's Commitment
- Achieved this thinness and size with 100% PLA (no petroleum-derived materials blended) – world's first! ※According to our research
- Bottom is heptagonal – a rare design with auspicious meaning
- Designed to perfectly fit a beer can
- Rim thickness of 0.65mm for excellent mouthfeel
◎ Please feel free to contact us for sample requests, quotations, or consultation meetings.
◎ Related Articles
About the Technology:
https://ja.nc-net.or.jp/company/1285/product/detail/265574/
PLA Cup “4Tiers”:
https://ja.nc-net.or.jp/company/1285/product/detail/265576/
PLA Cup “Foam”:
https://ja.nc-net.or.jp/company/1285/product/detail/265581/
Heat-Resistant PLA Mug “N1”:
https://ja.nc-net.or.jp/company/1285/product/detail/265578/
◎ Contact
Nissin Precision Machines Co., Ltd. – Head Office
〒146-0095 2-29-21 Tamagawa, Ota-ku, Tokyo
TEL: 03-3758-1901
E-mail: gn_info@nissin-precision.com
Our company is engaged in the injection molding and sales of bio-plastic products.
This time, we would like to introduce the heat-resistant PLA mug “N1”.
▪ Product Information
- Product Name: N1
- Material: Heat-resistant PLA (Polylactic Acid)
- Capacity: 400mL
- Dimensions: Rim diameter φ98.5mm × Height 100mm
- Compliant with Food Sanitation Law (former Ministry of Health Notification No. 370)
▪ Artisan's Commitment
- World's first PLA mug with excellent heat retention and heat resistance
- Large capacity suitable for soups
- Handle designed for easy hanging to dry
- Safe even if you almost knock it over!
- Durable design that won't break if dropped
- Organic feel with unique color and marble patterns for each piece
◎ Please feel free to contact us for quotations or if you have any questions. We are happy to assist you!
◎Related Articles
About the Technology:
https://ja.nc-net.or.jp/company/1285/product/detail/265574/
PLA Cup “Bio7”:
https://ja.nc-net.or.jp/company/1285/product/detail/265575/
PLA Cup “4Tiers”:
https://ja.nc-net.or.jp/company/1285/product/detail/265576/
PLA Cup “Foam”:
https://ja.nc-net.or.jp/company/1285/product/detail/265581/
◎ Contact
Nissin Precision Machines Co., Ltd. – Head Office
〒146-0095 2-29-21 Tamagawa, Ota-ku, Tokyo
TEL: 03-3758-1901
E-mail: gn_info@nissin-precision.com
Y.M
Our company is manufacturing and selling the ultra-thin bio-plastic glasses “Bio7” and “4Tiers”!
This time, we would like to introduce the NEW version “Foam”.
▪ Features
- Pattern resembling foam bubbles.
- Unique bubble formation for each piece.
- Matte finish for a pleasant touch.
- Nitrogen is blown in at a supercritical state (the boundary between liquid and gas)!
- Foam is created by adjusting processing conditions while keeping the mold and material (PLA) unchanged!
◎ Priced the same as the transparent version!
Please feel free to contact us for sample requests, quotations, or consultation meetings.
◎Related Articles
About the Technology:
https://ja.nc-net.or.jp/company/1285/product/detail/265574/
PLA Cup “Bio7”:
https://ja.nc-net.or.jp/company/1285/product/detail/265575/
PLA Cup “4Tiers”:
https://ja.nc-net.or.jp/company/1285/product/detail/265576/
Heat-Resistant PLA Mug “N1”:
https://ja.nc-net.or.jp/company/1285/product/detail/265578/
◎ Contact
Nissin Precision Machines Co., Ltd. – Head Office
〒146-0095 2-29-21 Tamagawa, Ota-ku, Tokyo
TEL: 03-3758-1901
E-mail: gn_info@nissin-precision.com
Y.M
This time, we are pleased to introduce our 3D printer.
At our company, we use the “H2D” manufactured by Bambu Lab.
It achieves a high level of precision within ±0.05mm, which is considered excellent within the industry.
The maximum build size is 350 × 320 × 325 mm³.
The primary materials we use are plastic filaments such as PLA, ABS, and TPL.
Alongside manufacturing precision die components, our employees also utilize their creativity and ingenuity to develop original idea products (^▽^)/
We will be introducing several convenient items that we have produced in-house.
We plan to continue developing a wide variety of new products. Since the ideas generated internally are naturally limited, if there is something you would like us to try making, we would be delighted to receive your suggestions!
❀ Contact Information ❀
Nissin Precision Machines Co., Ltd. Head Office
〒146-0095, 2-29-21 Tamagawa, Ota-ku, Tokyo, Japan
TEL: 03-3758-1901
E-mail: gn.info@nissin-precision.com
Related URL: https://www.nissin-precision.com/products/precisiondie/
Person in charge: M.H
This time, we are pleased to introduce the “Tamagawa Large ‘Hashi’ Rest”!
We are grateful that it has been selected as one of the “100 Recommended Souvenirs of Ota City,” making it a carefully crafted item that also contributes to regional revitalization in Ota City.
Each piece is machined from a solid block of stainless steel, with variations in surface finishing and curved dimensions to achieve its refined form.
・Material – SUS304
・Tolerance – ±0.003
In addition to being used as a chopstick rest, it also makes a strong impression as a paperweight or decorative object.
This is a unique item that showcases our precision machining technology.
It is now on sale at the Ota City Tourist Information Center, so if you are visiting Ota City, please be sure to stop by!
*For more information about the “100 Recommended Souvenirs of Ota City,” please refer to the following link:
https://ota-mice-guide.jp/miyageweb/about/
〈Photo: Side holes are also drilled〉
【Issues with Material Yield in Deep Drawing】
Deep drawing is a typical sheet metal forming process used to produce cylindrical or case-shaped components. However, manufacturing often faces issues such as:
・Uneven thickness during deep drawing
・Cracking at the bottom or shoulder areas
・Earing and wrinkling
・Large amounts of scrap after blanking
With rising material costs, scrap handling has become a critical factor affecting overall product competitiveness.
【What Is Deep Drawing】
〈Plastic forming that transforms sheet metal into 3D shapes〉
Deep drawing forms cup- or cylindrical shapes by pressing sheet metal with a punch and die.
Stable deep drawing requires:
・Proper blank diameter design based on material properties
・Optimization of blank holder force
・Appropriate punch and die radii (R)
・Controlled lubrication conditions
Kawamura Kikai Co., Ltd. operates 50 press machines (10–500 t) and supports processes such as deep drawing, bending, blanking, and trimming, backed by over 70 years of metal press expertise.
【Multi-Stage Scrap Utilization】
〈Maximizing material usage〉
The company reuses scrap from the first product to produce additional parts, sometimes up to four stages. Through optimized blank design and process planning, materials are used more efficiently while maintaining forming quality.
【Thickness Control Technology】
〈Preventing localized thinning〉
To prevent localized thinning, the company applies:
・Radius (R) design to control material flow
・Multi-stage forming to distribute forming loads
・Fine adjustment of blank holder force
・Process planning based on prior deformation history
These methods help achieve uniform thickness and stable product quality.
【Applications】
Typical deep-drawn components include:
・Motor cases
・Cover parts
・Cylindrical brackets
・Various housing components
Uniform thickness improves both appearance and durability, while scrap reuse enhances material yield and cost efficiency.
【Key Considerations When Evaluating Deep Drawing】
〈From single-part optimization to system optimization〉
Important factors include:
・Balance between required depth and sheet thickness
・Material strength and ductility
・Connection with downstream processes
・Potential improvement in material yield
If multiple parts can be produced from the same material sheet, blank layout and dimensional relationships should be optimized from the early design stage.
Because the company designs and manufactures dies in-house, it can quickly implement shape modifications and process improvements during prototyping, enabling efficient transition to mass production.
【Summary】
Deep drawing requires precise material flow control. By combining uniform thickness forming with multi-stage scrap utilization, manufacturers can improve material efficiency while maintaining product quality.
【Contact Information】
Kawamura Kikai Co., Ltd.
Head Office: 2-4 Shimizu-cho, Itabashi-ku, Tokyo 【Composite Division】
Hanazono Factory: 10 Kitane, Fukaya-shi, Saitama 【Metal Press Division】
Website: https://www.kawamura-kikai.co.jp
Inquiry / Quotation: https://www.kawamura-kikai.co.jp/contact/
Consultations are available from the early design stage for deep drawing and material reuse–oriented process design. Sharing drawings or current issues will help identify the optimal manufacturing approach.
