High-concentration natural rubber latex
Regitex TRH-70 is a high-concentration natural rubber latex developed by our company. Currently, the mainstream natural rubber latex available on the market has a concentration of 61% and is primarily used for molding applications such as gloves, balloons, and foam rubber, as well as for adhesive applications. Additionally, to improve drying properties, products concentrated to about 68% have been commercialized using evaporation and creaming methods. However, latex produced by the evaporation method uses caustic potash and soap during the manufacturing process, resulting in poor drying properties despite its high concentration. Furthermore, the dried film has weaknesses such as low strength and high moisture absorption. Latex produced by the creaming method retains the creaming agents used during manufacturing, which leads to the progression of the creaming phenomenon during long-term storage, causing an increase in concentration in the upper layer and a decrease in concentration in the lower layer, resulting in troubles. Regitex TRH-70 was developed to address these shortcomings. TRH-70 is produced using an evaporation method with a special manufacturing device. Here, we introduce the properties, characteristics, and applications of this product.
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basic information
【Property Values】 Total solids (%) 68–71 Dry rubber content (%) 66.5–69.5 Non-rubber content (%) <1.8 Alkali content (%) <0.6 pH 9.75–10.75 Viscosity (mPa·s) 600–2,000 【Features】 ・It is water-based but has excellent drying properties. ・The dried film has high strength and significant elongation. ・Due to its quick-drying nature, it has low permeability, making it suitable as an adhesive for polyurethane foam. ・It has good adhesion to fibers. ・It exhibits excellent stripping properties on plastics and metals.
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Applications/Examples of results
【Uses】 1) Adhesive for footwear - Bonding various components (leather, fabric, etc.) - Adhesive for automatic hanging machines (can bond one side) - Adhesive for slippers 2) Adhesive for carpets - For backing, bonding fold areas, joining, and construction adhesives 3) Adhesive for textiles
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Company information
○Development of Environmentally Friendly Adhesives○ We are engaged in product development with the theme of "wanting to be a technology that is kind to people and the Earth." ○Creation of Distinctive Products and Development of New Products○ We strongly support the development of unique products that meet customer needs, such as new products. Natural rubber latex, one of the raw materials for water-based adhesives, is made from the sap of rubber trees. Natural rubber latex absorbs CO2 from the atmosphere and is an organic resource that is produced by soaking up plenty of solar energy. Even when burned, it does not increase CO2, which is a major cause of global warming. Furthermore, as an organic resource, natural rubber latex can continue to be utilized by planting trees to offset its use.