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liming auxiliary agent
The ashing agent is a type of key material used in the ashing process immediately after the water immersion process. The core purpose of this process is to remove the hair, saponify the internal fats in the skin, and further loosen the collagen fibers, laying the foundation for the subsequent tanning process. The main function of the ashing agent is to enhance the efficiency and quality of this process, while reducing the usage and pollution of main chemicals such as sodium sulfide.
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Deliming Agent
The deliming auxiliary agent is a type of key material used in the descaling process immediately following the soaking process. The raw skin after soaking is in a strongly alkaline expanded state. The core objective of the descaling process is to remove the lime, alkali and sulfides within the skin, eliminate the expanded state, and adjust the pH value of the raw skin to a suitable range for subsequent enzymatic softening (usually around 8.0). The main function of the descaling agent is to efficiently and gently achieve this process, laying a foundation for the subsequent softening and tanning.
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Degreasant
The Degreasing agents are a crucial material in the leather preparation process, mainly used to remove the natural oils (such as fats and triglycerides) from the inner and outer layers of raw leather. They can also emulsify and wash away dirt on the leather surface. Since oils can hinder the uniform penetration of subsequent chemicals (such as tanning agents, dyes, and finishing agents), resulting in problems such as oil spots, uneven coloring, and loose surface of the finished leather, the degreasing effect for highly oily skins (such as pigskin and sheepskin) directly affects the softness, fullness, and appearance quality of the finished leather.
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Rewetting agent
The rewetting agent is a key auxiliary material in the wet finishing process of leather tanning. It is mainly used to replenish water to the blue wet leather or the dried leather pieces that have been left for a long time, so as to restore the leather to a soft and pliable state, allowing the fibers to regain their loose and malleable properties. This is necessary for laying a solid foundation for subsequent processes such as re-tanning, dyeing, and oiling. If the re-humidification is insufficient, it will lead to uneven absorption of the chemical materials in the subsequent processes, resulting in problems such as color spots, oil stains, and even cracking.
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Acrylic retanning agent PA
The Acrylic tanning agent is one of the most crucial materials in the leather re-tanning process. It mainly addresses the unevenness of leather by selectively filling the loose areas of the leather (such as the abdominal and flank regions), thereby improving the quality of the leather in terms of fullness, softness, and light resistance. It is an indispensable material in the production of modern high-quality leather, including sofa leather, shoe upper leather, and clothing leather.
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General Purpose Synthetic F...
1: MKL has excellent plumpness and can maintain the firmness of the leather base, suitable for various soft and hard styles, and is a relatively universal emollient agent.
2: MKL can be used together with various emollients. It can be used for firming styles or for cracking patterns styles.
3: MKL has excellent resistance to light, heat, and stability.
