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Resin/Plastic
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共栄化成

addressOsaka/Daito-shi/3-5 Nitta Sakai Town
phone072-871-7898
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last updated:Apr 15, 2026
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Environmental Plastic Services Environmental Plastic Services
Environmentally friendly products Environmentally friendly products
Two-color (different materials) molding Two-color (different materials) molding
Environmentally

Environmentally friendly products

We would like to introduce the "environmentally friendly products" offered by our company.

Kyoeika Se Co., Ltd. Company Profile

We are reducing the amount of plastic used and creating plastic products!

Our company is engaged in the manufacturing of plastic injection molded products. We offer various types of injection molding, including recycled PET molding, biomass molding, and two-color molding. Additionally, we have established a supply system that operates 24 hours a day, including Saturdays (according to the company calendar). Please feel free to contact us when you need our services. 【Business Activities】 ■ Manufacturing of plastic injection molded products *For more details, please download the PDF or feel free to contact us.

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Recycling PET bottles through injection molding for regenerated PET molding and recycling molding.

Please leave it to our technical expertise, which is based on our unique molding technology, years of experience in mold design know-how, establishment of suitable molding conditions, and realization of efficient production cycles.

We would like to introduce our "Recycled PET Molding" services. Recycled PET materials offer benefits such as contributing to the reduction of environmental impact and achieving cost competitiveness. However, there are challenges, including variability in material properties, ensuring molding stability, and fluctuations in market prices (especially the impact from bottle-to-bottle recycling). Our company recognizes the protection of the global environment as one of the most important and urgent issues in the world, and we are actively engaged in environmentally friendly materials. 【Our Technical Capabilities】 - Unique molding technology and mold design know-how based on years of experience, establishment of optimal molding conditions, and realization of high-efficiency production cycles. - Quality control systems, immediate response capabilities according to variations in material properties, achievement of stable molding quality, and rapid troubleshooting in case of defects. - Enhanced supply systems, stable raw material procurement routes, and competitive pricing. *For more details, please download the PDF or feel free to contact us.

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Biomass molding

Especially suitable for use in markets where environmental considerations are required! A product boasting high durability and performance.

In our "biomass molding" using sustainable materials, we create products that consider the future of the Earth. By utilizing renewable resources, we provide products that are ecological yet boast high durability and performance. Both "recycled PET molding" and "biomass molding" are particularly suitable for use in markets where environmental considerations are required. 【Product Examples】 ■ Paper 51%, PP 49% ■ Wood 30%, PP 70% ■ Wood 100% ■ Bamboo charcoal + PP ■ Coffee 20% *For more details, please download the PDF or feel free to contact us.

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Recycled PP injection molding service | Stabilization of appearance and quality through formulation adjustment

Cost reduction of 5-15% compared to virgin materials. By adjusting the mixing ratio and controlling the flow according to the application, we achieve molding that minimizes the unique shrinkage and warping of recycled materials.

We support the coexistence of environmental considerations and cost reduction through injection molding utilizing recycled plastics. We have a wealth of mass production experience in everyday goods and miscellaneous parts. ■ Molding Technology for Problem Solving We address concerns such as shrinkage and warping due to differences in shrinkage rates when using recycled PP, as well as the reduction in impact resistance, with our years of expertise. By considering the balance of physical properties and adjusting the formulation for specific applications, we ensure performance levels comparable to about 80-90% of virgin materials. In addition to precise control of mold temperature and holding pressure, we minimize quality variations unique to recycled materials through flow control via gate design. ■ Advantages in Appearance and Cost In terms of appearance, we have stable solutions for black and dark colors, as well as proven results for lighter shades like gray. Cost reductions of approximately 5-15% compared to virgin materials are anticipated, strongly promoting the transition of existing products to environmentally friendly alternatives. For the challenge of wanting to advance environmental considerations but having concerns about quality, we propose optimal solutions through a triad of materials, molds, and conditions. *For more details, please download the catalog or feel free to contact us.

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Recycled ABS Injection Molding Service | Optimal Design to Reduce Strength and Appearance Variability

Secured physical properties with a virgin ratio of approximately 70-90% for stationery and daily necessities. Solved the issue of strength reduction in recycled materials through color adjustment and formulation design using coloring agents.

We provide high-quality injection molding using recycled ABS for stationery and daily necessities components. We support customers who want to balance environmental considerations with product quality from the material selection stage onward. ■Maintaining Strength and Aesthetics To address the major concern of reduced impact strength when using recycled ABS, we achieve properties close to virgin materials through our unique formulation ratio design. For appearance consistency, we ensure a stable finish with no color variation, particularly in white and dark colors, through precise color adjustments using dedicated colorants and masterbatches. We can mold products that maintain their value without giving the outdated impression often associated with recycled materials. ■Proven Implementation Benefits In terms of cost, we can achieve a reduction of 5-10% compared to virgin materials. By optimizing materials, molds, and molding conditions from the planning stage, we guarantee stable quality supply at mass production levels. We secure about 70-90% of the properties of virgin materials, contributing to the creation of practical products while minimizing environmental impact. *For more details, please download our catalog or feel free to contact us.

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Recycled PET injection molding service | Mass production achievements with 100% recycled material

Reduce raw material costs by approximately 40-50%. Achieve high-quality mass production molding with clearly traceable recycled materials made from used PET bottles.

Our injection molding service utilizes recycled PET (rPET), which is one of our strengths. We have a proven track record of mass production using 100% recycled materials for major manufacturers, achieving both environmental consideration and dramatic cost reduction simultaneously. ■ Stable Supply and Quality Control We use materials that are clearly traceable, made from PET bottles collected from municipalities and re-commercialized through the Japan Container and Packaging Recycling Association's system. We have established a stable supply system necessary for mass production through continuous transactions with domestic recycling companies. ■ Thorough Measures Against Molding Defects We address cracking and release defects caused by hydrolysis through strict management of drying conditions and optimization of mold design. By fine-tuning injection speed and temperature according to the differences in flow characteristics for each lot, we prevent burrs and shorts, enabling stable molding in various colors such as transparent and white. A comparison based solely on raw material costs shows a reduction of about 40-50% compared to virgin materials, allowing us to contribute to CO2 reduction with high economic rationality. *For more details, please download our catalog or feel free to contact us.

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Recycled Plastic Injection Molding | Total Proposal from Material Selection to Mass Production

Mass production achievements of recycled PET, PP, and ABS. By optimizing material composition, molds, and molding conditions, we have eliminated quality concerns while achieving environmental considerations and cost reduction.

We are a comprehensive manufacturer of injection molding utilizing recycled plastics. Not only do we use recycled materials, but we also optimize materials, molds, and molding conditions as a whole to establish a stable quality level suitable for mass production. ■ Advanced Molding Technology and Responsiveness We accommodate a variety of resins, including PP, ABS, and 100% recycled PET with proven molding performance. We offer solutions to the unique issues of recycled materials, such as "shrinkage and warping," "appearance variability," and "strength reduction," through techniques like formulation adjustments and flow control tailored to specific applications. In particular, for recycled PET, we use highly transparent raw materials that have undergone the Japan Container and Packaging Recycling Association's system and have established a stable supply system in collaboration with domestic recycling companies. ■ Benefits of Implementation Compared to virgin materials, cost reductions of 5-15% for PP and ABS, and approximately 40-50% in raw material costs for recycled PET can be expected. We can provide comprehensive proposals aimed at mass production to meet the needs of those who want to advance environmental initiatives but are concerned about quality, as well as those who wish to contribute to the environment while keeping costs down. Please feel free to consult us, even from the consideration stage. *For more details, please download our catalog or feel free to contact us.

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