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  6. Oil is surfacing on the surface of the rubber products. Review the materials to reduce appearance defects!

Oil is surfacing on the surface of the rubber products. Review the materials to reduce appearance defects!

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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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Oil is surfacing on the surface of rubber products, causing discoloration. By reviewing the rubber materials and molding conditions, we can reduce appearance defects and contribute to expanding the range of developed products!

■Specific Concerns "I discovered discoloration on the surface of the rubber product that looks like oil is surfacing after prototyping." "Since the launch is approaching, I want to resolve this somehow." ■Solution Adjust the formulation of the rubber material to improve the mixing of oil and rubber, and also adjust the pressure during the molding process. ■Effects Elimination of bleeding Significant reduction in appearance defects Expansion of the development product repertoire ⇒ Successfully launched the new product and increased the development repertoire. ■Customer Feedback "The appearance defects dramatically decreased, and we were able to launch successfully." "I gained confidence in developing this type of product and will pursue development more actively." *For more details, please download the materials or feel free to contact us.*

    Contract manufacturingProcessing ContractRubber
8D27012F-6BF5-4069-8BEC-A28C496C5864_new.jpg

Oil is surfacing on the surface of the rubber products. Review the materials to reduce appearance defects!

8D27012F-6BF5-4069-8BEC-A28C496C5864_new.jpg
8D27012F-6BF5-4069-8BEC-A28C496C5864_new.jpg
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<Case Overview> Product Group: Mobility-related Project Type: Mass Production Product Size: Approximately 100×350 mm <Shinei Rubber Industry will solve your concerns> 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 the machinery and extensive experience to produce rubber products from hand-sized to over 1 meter! With over 75 years of experience, we respond with proven results and overwhelming speed in producing rubber products around 1 meter. 2. I want to use satisfactory rubber products, but I don't understand rubber well! ⇒ Comprehensive support from prototype to mass production launch! We provide consistent support from appropriate material selection to prototyping and mass production. We can also diagnose the suitability of the rubber materials currently in use, design formulations, and conduct material prototype mixing. We also accommodate prototypes 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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[Essential for Product Development / Production Management / Sales Representatives] Solutions for Rubber Products Ranging from Hand Size to Over One Meter!!

[Essential for Product Development / Production Management / Sales Representatives] Solutions for Rubber Products Ranging from Hand Size to Over One Meter!!

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

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

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Case Study: Oily Surface... Solving the Bleed Issue!!

Case Study: Oily Surface... Solving the Bleed Issue!!

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Case Study: Oily Surface... Solving Bleeding! Rubber Products, Rubber Molding, Rubber Materials

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The surface of rubber products is becoming oily... Here we introduce a case where this issue was resolved by adjusting the formulation and reviewing the molding conditions!

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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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