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  6. Recycled rubber has negative effects. A review of materials enables the creation of sustainable rubber products!

Recycled rubber has negative effects. A review of materials enables the creation of sustainable rubber products!

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last updated:Jul 08, 2025

信栄ゴム工業
信栄ゴム工業
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Is recycled rubber harmful? With the right recycled rubber, it is possible to create environmentally friendly and sustainable rubber products!

■Specific Concerns "I tried mixing inexpensive recycled rubber to reduce costs, but it didn't work out." "The molding time is too long, leading to increased labor costs." ■Solution We resolved the issue by using recycled rubber that has a proven track record in our company! ■Effects Molding time was reduced by half, leading to a decrease in labor costs. The degassing improved, resulting in a significant reduction in defects. It became possible to develop environmentally friendly rubber products utilizing recycled rubber. ■Customer Feedback "This experience taught me that while cost is important, it's crucial to assess the overall balance and the characteristics of raw materials." "I felt the potential to develop sustainable products that consider the environment even in rubber products." *For more details, please download the materials or feel free to contact us.*

    Contract manufacturingProcessing ContractRubber
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Recycled rubber has negative effects. A review of materials enables the creation of sustainable rubber products!

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  • Related Link - https://shinei-rubber.jp/blog/%e8%aa%b2%e9%a1%8c%e…

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<Case Overview> Product Group: Mobility-related Project Type: Mass Production Product Size: 900×500 <Shinei Rubber Industry will solve your problems> 1. I want to create rubber products from hand-sized to over 1 meter, but I don't know where to produce them! ⇒ We have machines and extensive experience in producing rubber products from hand-sized to over 1 meter! With over 75 years of experience, we respond with overwhelming speed while continuously producing rubber products around 1 meter in size. 2. I want to use satisfactory rubber products, but I don't understand rubber well! ⇒ We provide comprehensive support from prototyping to mass production launch! We handle everything from appropriate material selection to prototyping and mass production according to usage and requirements. We can also conduct suitability assessments of currently used rubber materials, formulation design, and material prototyping. We can accommodate prototyping of single items without the need for molds. 3. There is a procurement crisis due to business closures and labor shortages... I want you to produce instead! ⇒ Stable supply even with mold transfer from other companies! We can transfer molds used by other companies as they are. We ensure stable supply while maintaining quality and delivery times. We also handle spot projects, with examples of launches in as little as one week.

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I thought costs would go down, but the workload increased... Let's solve it by re-evaluating recycled rubber! We should carefully assess the overall balance and the characteristics of the raw materials used.

I thought costs would go down, but the workload increased... Let's solve it by re-evaluating recycled rubber! We should carefully assess the overall balance and the characteristics of the raw materials used.

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Shin'ei Rubber Industry Co., Ltd. Company Profile

Shin'ei Rubber Industry Co., Ltd. Company Profile

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I thought costs would go down, but the workload increased... Solved by re-evaluating recycled rubber! Introducing case studies on rubber materials, rubber molding, sustainability, and problem-solving!

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In rubber products, recycled rubber, which is made by recycling materials like used tires, may be used. The advantages of using recycled rubber include "being sustainable as it is a recycled product" and "lower cost compared to regular rubber materials." However, there were concerns that "mixing inexpensive recycled rubber to reduce costs did not work well," resulting in "twice the usual molding time" and "an increase in defects." Upon investigation, it was found that "the curing time for the rubber was taking more than twice as long" and "gas release was becoming worse." The properties of recycled rubber can vary significantly depending on the quality of the rubber before recycling, and this tendency is more pronounced in lower-grade, inexpensive products, making it difficult to maintain consistent quality. Therefore, when we used recycled rubber that had a proven track record in our company, we were able to achieve "normal curing times" and "a significant reduction in defects." For more details, please download our case study or feel free to contact us.

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信栄ゴム工業

信栄ゴム工業

Rubber products

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Do you have any concerns regarding rubber products? Shin-Ei Rubber Industry, established in 1947, will solve your problems! 1. I want to create rubber products ranging from hand-sized to over 1 meter, but I don't know where to produce them... ⇒ We have the machinery and extensive experience to produce rubber products from hand-sized to over 1 meter! With over 75 years of experience and a proven track record of continuously producing rubber products around 1 meter in size, we can provide rubber products from hand-sized to over 1 meter with overwhelming speed. 2. I want to use satisfactory rubber products, but I don't understand rubber well... ⇒ We provide comprehensive support from prototyping to mass production! We handle everything from appropriate material selection to prototyping and mass production according to the intended use and required standards. We can also assess the suitability of the rubber materials currently in use, design formulations, and conduct material prototyping. You can leave material development to us. We also support prototyping of one-off items without the need for molds. 3. There is a procurement crisis due to business closures and labor shortages... I want you to produce instead... ⇒ Stable supply even with mold transfer from other companies! We can accept mold transfers from other companies as they are. We ensure stable supply while maintaining quality and delivery times. We also handle spot projects, with examples of startup in as little as one week, valuing speed.

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