Synthetic Resin Division
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Business Overview
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Synthetic Resin Division
OUTLINE
Pursuing high value-added recycled raw materials and new possibilities for plastics
The Synthetic Resin Division aims to realize a sustainable society based on three core businesses: recycling, compounding, and resin material sales.
We not only recycle plastics into resin materials but also return them to society as materials with higher value through our compounding technology.
Furthermore, by establishing an internal circular system that efficiently circulates plastics generated in our Food Container Division and Electronic Materials Division, we are working to create a framework for carefully continuing to use limited resources without waste.
< Recycling Business >
In the recycling business, we collect plastic products that have fulfilled their roles and scrap materials generated in the manufacturing process, transforming them back into resin raw materials.
By performing not only recycling but also the subsequent compounding internally, we return these to society as materials with even higher added value.
Details
< Compounding Business >
In the compounding business, we handle everything from resin formulation design to development, prototyping, and mass production according to customer requests. Based on the material and formulation data we have accumulated and our wide range of adoption track records, we shape new possibilities for plastics. Our hybrid technology enables us to make proactive proposals while ensuring required strength with concrete numbers.
Details
< Resin Material Sales Business >
In the resin material sales business, we store and ship the optimal plastic materials our customers need, delivering them speedily in requested lot sizes and at the desired cost.
We respond to the diverse needs of our customers with excellent material procurement capabilities, both domestic and international, including imported raw materials, and a reliable system for stably delivering materials.
RECYCLING
At Nishiki, we do not simply crush collected plastics; we process them carefully according to the characteristics of the material.
With our unique "Resource Extraction" technology, even materials that are difficult to recycle, such as painted bumpers and containers with stickers, are revived into clean raw materials by removing impurities through air separation and polishing.
From sorting and extraction to value-enhancing compounding and final inspection, we deliver reliable quality through an integrated system where all processes are smoothly connected.
[Recycling: Re-manufacturing into Raw Materials]
[Resource Extraction Equipment]
*1 ELV: End-of-Life Vehicle (scrapped vehicles).
Synthetic Resin / Recycling
*2 Precise Dismantling: The process of extracting parts using heavy machinery, robots, etc., before finely shredding end-of-life products such as scrapped vehicles.
Synthetic Resin / Recycling
*3 ASR: Automobile Shredder Residue. (Material from the post-process of *1)
PURPOSE
Nishiki's recycled plastic raw materials and compound materials are used in a wide range of manufacturing fields, from automotive parts that require high safety to packaging materials that support daily life, and even precise medical components.
Automobiles
Industrial Materials
Packaging Materials
Agricultural and Horticultural Materials
Building Materials
Medical Parts
QUALITY CONTROL
Under the slogan of "Quality First," we focus on quality in all processes from production planning to shipping, satisfying our customers by creating value-added products through research and development.
Quality Engineering Department (Control Center) located at Head Office / Plant No. 1
Quality Control Center
Environmental Standards- Room Temperature: 23°C ± 2°C
- Relative Humidity: 50% ± 10%
Complies with Standard Atmosphere Class 2 of JIS K 7100Applicable Standards for Physical Property Testing
Former JIS Standards / ISO Standards
Available Testing Equipment (Partial)
X-ray Fluorescence Analyzer, MFR Tester, Izod Impact Tester, HDT Tester, Electric Furnace, Hydrometer, Moisture Meter, Direct-reading Balance, Press Machine, Injection Molding Machine
Melt Indexer
Impact Tester
Digital Hydrometer
HDT Tester
Hot Press Machine
Rockwell Hardness Tester
Box Furnace
Injection Molding Machine
EQUIPMENT
< Plant No. 1 >
Manufacturing and sales of functional resin compound products
ISO9001:2015 Certified (NQA Registration No. 22477 / EAC Code 14/29)
Mixers
2-ton Tumbler x 1
1-ton Tumbler x 3
300kg Tumbler x 1
200kg Tumbler x 1
50kg Tumbler x 1Extruders / Compounders
54mm Twin-screw Extruder x 2
48mm Twin-screw Extruder x 1
30mm Twin-screw Extruder x 1Circulation Tanks
1,000kg Circulation Tank x 3
< Plant No. 2 >
Plastic resource recycling, manufacturing and sales of plastic products
ISO9001:2015 Certified (NQA Registration No. 22477 / EAC Code 14/29)
Crushers
Shredders75HP Shredder x 1 (Linked to Crusher)
50HP Crusher x 1
30HP Crusher x 2
20HP Crusher x 1Mixers
3-ton Tumbler x 1
2-ton Tumbler x 1
Drying Mixer x 1Extruders / Compounders
100mm Single-screw Extruder x 1
105mm Single-screw Extruder x 1
110mm Single-screw Extruder x 3Recycling Machines
Integrated Shredding/Crushing Extruder x 3
CASE STUDY
Received "Excellence in Development Award" from Honda Motor Co., Ltd.
The Synthetic Resin Division received the "Supplier Award 2026 Excellence Appreciation Award" from Honda Motor Co., Ltd.
We will continue to strive for further improvements in our technological capabilities and thorough quality control, moving forward as a united company to stably supply high-quality products that meet our customers' expectations.
RECRUIT
Smartphones, cars, and hors d'oeuvre plates. 'That product' everyone touches every day. We are looking for team members to support daily life and society.
At Nishiki, our divisions collaborate to handle everything from recycling to product planning, manufacturing, and sales. We are recruiting employees to make plastic—an essential part of society—more eco-friendly and convenient to use. Please check here for voices of senior employees and our efforts to create a comfortable work environment.
View Recruitment Details(JPN)
CONTACT
Inquiries by Phone
Call Us
Inquiries via Form
Contact Form
Nishiki Co., Ltd.
Nishi634-1 Sakainishi-machi, Tosu City, Saga Prefecture 841-0042
© 2026 Nishiki Co., Ltd.