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  • Wetsuit material - What is limestone neoprene

    It was Yamamoto Corporation from Osaka, Japan that first developed neoprene from limestone—and with no oil at all—thanks to an abundance of pure limestone close by in the mountains of Japan (their reserve of limestone is estimated to be sufficient for the next 3,000 years). Yamamoto has set the standard for quality and innovation in the neoprene industry with their advanced manufacturing techniques, leading to the creation of a limestone neoprene that has a completely independent cell structure and multi-directional stretch capacity.

    The calcium carbonate, found in the limestone, is used as the base with chloroprene by a process of polymerization to produce limestone based-chloroprene rubber chips.

    What are the advantages of limestone neoprene?
    Limestone neoprene has a high micro-cell structure. These are independent closed cells (bubbles basically) within the neoprene that are packed together at an extremely high density. Oil-based neoprene has a cell penetration of 60-70%, whereas limestone neoprene has a 94% cell penetration. What this means in simple terms is that limestone neoprene has a lot more air bubbles inside the rubber than other brands (over 30% to be exact), and is way less dense than oil-based neoprene.
    Because of this micro-cell structure, limestone neoprene provides several serious distinct advantages to the functionality of wetsuits compared to the traditional oil-based neoprene:

    It is impermeable.
    It is lighter in weight.
    It is warmer.
    It is more durable.
    It is stretchy.

    Wetsuit material-What is Limestone Neoprene

  • Wetsuit material - What is neoprene types

    There are several different grade Neoprene materials for different application: SBR, CR and SCR.

    NameFeaturesNeoprene CompositionApplication
    SBRA synthetic rubber produced by polymerization   of styrene and butadiene. It has excellent cushioning and warmth retention,   low price but poor compression resistance. Styrene Butadiene Rubber Wetsuit, bags, gloves, covers,   koozie, mouse mat, etc.
    CRA synthetic rubber produced by polymerization of chloroprene. It has excellent   elasticity, strength, pressure resistance and warmth retention, seawater   resistance, chemical resistance and flame retardancy. Pure Neoprene. Chloroprene   RubberHigh-end wetsuits and clothes.
    SCRA mixture of CR and SBR and is   widely used in the production of various related products as lower price than   CR and better elasticity than SBR. Mix of CR & SBRGloves, pants, wetsuits. etc.

    For the difference between the high-end material ( CR ) and the basic material is elasticity. High-end material is softer, more resilient, and fits even better after wearing, and keep the body warmer. Basic materials does not stretch as CR and more fragile.

    In addition, the high-end material is more expensive. The price of "CR" + "Super Stretch fabric" 5-6 times that of "SBR" + "Nylon fabric" in general, although their surfaces are similar. Some of rubber companies such as Sheico and Nam Liong developed high-end SCR that has good function. It is not as good as CR but price is low.

    Wetsuit material-What is Neoprene types

  • Wetsuit material - What is neoprene

    The completed chemical name of this material is actually called polychloroprene. DuPont renamed to neoprene when choosing a trade name for the material and the name stuck. Nowadays, all polychloroprene materials are simply referred to be as neoprene.

    What is it? It is an elastic synthetic rubber material that has very good insulating properties due to the millions of tiny air bubbles (microcells) inside the material. These cells are filled with air or nitrogen (better insulators). So that they make up the basic insulation of neoprene to keep warm inside. This is why the wetsuits are also made of this material.

    Wetsuit material-What is neoprene

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