Explanatory Material "Basic Knowledge of Rubber Made Easy"

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last updated：Apr 06, 2026

大和ケミカル

We will introduce the advantages and disadvantages of rubber molding methods, as well as examples of troubles related to rubber products. We have received certification as a Health Management Excellent Corporation 2022.

Our company is engaged in the development and manufacturing of rubber products that are active in various industries such as automobiles (HV/EV), energy, medical, connectors, and engines. Currently, we are distributing materials that summarize basic knowledge about rubber, methods of rubber molding, their advantages and disadvantages, and examples of common issues that may arise when using rubber products. [Material Overview] ■ About Natural Rubber and Synthetic Rubber ■ Applications of Rubber ■ What is Synthetic Rubber (Composition and other discussions) ■ Types of Rubber Compounding Agents ■ Mechanism of Rubber Molding (Cross-linking) ■ Advantages and Disadvantages of Rubber Molding Methods (Compression Molding, Transfer Molding, Injection Molding) ■ Examples of Rubber Product Issues (O-rings, Outgassing, Softening Degradation, Migration Contamination) [Investment in Automation Equipment Including IoT Facilities] As a first step, we are introducing automatic assembly machines and automatic visual inspection machines at our headquarters factory. We aim to further improve efficiency and establish a system that can consistently supply high-quality products at low prices. *The materials can be viewed immediately from the "Download" section. If you would like an explanation about rubber or have any projects under consideration, please feel free to let us know.

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Amid the trend of sulfur-free products, we have developed an environmentally friendly "sulfur-reduced grade" rubber that does not use peroxide crosslinking to eliminate the costs and time associated with secondary crosslinking. 【Examples of our VA proposals and QCD effects】 ◎ Regarding the specifications that were somewhat over-specified in the drawings, we inquired about the intended use and proposed several alternative material grades. After evaluation, the drawings were modified, and by adopting the material that offered the best balance of price and performance, we achieved significant cost reductions and received a rationalization award. ◎ In response to market complaints from our customers, we conducted an investigation into a rare case of rubber degradation mode that we had no prior knowledge of. While performing external tests at an evaluation research institution, we investigated the cause and discovered the mechanism. By implementing fundamental countermeasures, we eliminated the risk in the market thereafter. *Our research and countermeasures for a defect case that had not been presented at rubber conferences at that time were highly regarded.