Drying agent for leather products
The leather products such as cowhide, sheepskin, pigskin are easy affected from damp, mildew, living insect, it is a big problem for these products manufacture. Mildewy leather products can be seen in white, gray, blue, yellow, black mould, seriously affecting the appearance of leather products. Mildew grows on the surface while still developing toward interior, not only surface loses burnish but also the wear-resisting, strength, flexibility of leather also is affected. Aspergillus and penicillium are the main molds causing mildew in leather products.
The internal causes of leather mildew:
A. Leather contains nutrients required by mold. Leather is made from animal dermis, which contains protein, organic matter, grease and sugars contained in glazing agent, which can be combined by lipase and hydrolytic enzyme respectively, and can be used as nutrition for mold.
B. The porous structure of leather is one highly absorbent. The dermis contains many voids and pores, so that enhancing its hygroscopicity and increasing its water content, providing conditions for mold propagation.
C. Leather is acidic and good for mold growth.
According to scientific analysis, leather moldy must have three conditions: humidity, temperature and nutrients. Three factors must be suppressed to prevent leather mildew: the relative humidity must be between 50% and 75%, and moldy will occur over 75%. The lower temperature, the better. More than 25 ℃ is easy to mildew;
Leather easy affected from mildew, in addition to internal factors, there are also some external reasons. For example, packaging materials, container conditions; There are also transport, storage reasons and so on. The existence of these reasons, the product mildew left a hidden danger. Therefore, to prevent the mildew of leather products, in addition to the strengthening of raw materials, production, transportation, storage and other aspects of work, effective packaging work is also an important aspect. If the packaging materials and containers have high water content or poor moisture resistance, the leather products will absorb water and increase water content, which will cause mildew.
It has been proved that the following packing measures are effective in preventing mildew for Leather:
A. A drying agent should be placed in the carton to keep the goods dry
B. The outer packing carton must be dry and the moisture content should be kept below 16%. As the moisture in the cartons evaporates, the merchandise becomes moldy.
C. The cartons should be made of moisture-proof paper (95 grams of asphalt paper or 85 grams of tartan paper) to protect them from water invasion.
D. Packing containers and materials shall not be transported in heavy rain, and tarps with light rain cover shall be kept dry
E. Strengthen the inspection of the quality and moisture content of the packaging containers and materials, and prevent the wet packaging materials from entering the warehouse.
F. The packaging storage warehouse should be ventilated and dry. To stack the cartons, use a mat board, 30 cm from the wall. Relatively wet warehouse to put the dehumidifier, mechanical dehumidification.
Moisture and humidity are 2 biggest problems for exporters throughout the world. A packing or product may appear dry but in reality may have kilos of moisture waiting to condense and spoil the goods!
We offer a complete range of products and solutions for keeping your valuable products and exports free from problems of moisture and humidity.
A desiccant is a dehumidifying agent which attracts moisture from the atmosphere. It adsorbs and holds particles of water to itself. Desiccants are generally packaged in bags, packets, or canisters. Packets are sometimes referred to as “sachets” or “pouches.”Always packed with products and protect the products from damp.
Xiangtan Hongda Dampproof Preservation Technology Development Co., Ltd. Is the professional desiccant manufacture for more than twenty years. And our silica gel desiccant and mineral clay desiccant have been exported abroad for many years have won highly praise from our clients.
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