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  6. I want to eliminate irregular lines (weld lines) and remove appearance defects!

I want to eliminate irregular lines (weld lines) and remove 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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I want to eliminate the irregular lines (weld lines) that appear on rubber products. By reviewing the molding conditions, we can resolve appearance defects and insufficient strength, contributing to improved yield!

■Specific Concerns "I have irregular lines that make the appearance defective." "We're producing a lot of defective products... I want to improve the yield." ■Solution Reviewing molding conditions such as the positioning of rubber materials and the shape of the materials used. ■Effects Elimination of weld lines Improvement in appearance quality Increased productivity in molding and inspection processes due to yield improvement ■Customer Feedback "The appearance has really improved!" "The inspection process has become easier due to the yield improvement." *For more details, please download the catalog or feel free to contact us.*

    Contract manufacturingProcessing ContractRubber
A009650F-61CA-4DCD-89A3-0F8E47B41438.jpg

I want to eliminate irregular lines (weld lines) and remove appearance defects!

A009650F-61CA-4DCD-89A3-0F8E47B41438.jpg
A009650F-61CA-4DCD-89A3-0F8E47B41438.jpg
  • 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 <Shinei Rubber Industry will solve your concerns> 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 history, 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 prototype to mass production launch! We handle everything from appropriate material selection to prototyping and mass production. We can also assess the suitability of the rubber materials currently in use, design formulations, and conduct material prototype mixing. We also accommodate prototypes 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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Shin'ei Rubber Industry Co., Ltd. Company Profile

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

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Case study: I want to eliminate irregular lines (weld lines)!!

Case study: I want to eliminate irregular lines (weld lines)!!

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Updated the case study: I want to eliminate irregular lines (weld lines)!

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We want to eliminate the irregular lines (weld lines) that appear on the product! Here, we will introduce a case where we solved this issue by optimizing the material loading position and molding conditions during the molding process.

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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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