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What is the production process of sponge?
Release time:
2020-11-30 17:25
The common sponge is made of wood cellulose fiber or foamed plastic polymer. In addition, there are also pure natural sponges made of small sponge animals, most of which are used for human body cleaning or art painting. In addition, there are also three types of raw materials made of sponges, each of which is low density methacrylate (non-hygroscopic sponge), acrylic emulsion (water-absorbing material raw material, no significant pores) and polyester.
② Carry out polyurethane foam production and processing. 80 parts of butadiene vinyl acetate (EVA), 20 parts of APAOPT3385, 20 parts of formamide dicarboxamide, 19 parts of CaCO and 0.6 parts of peroxide dicumyl are mixed together, polyurethane foam is placed in the mold shell, and the inner muscle is defeated by mechanical equipment force, and polyurethane foam sponge can be prepared. Its relative density (d) is 0.028g/portal-saas/new2023082119223596543/cms/image/ef38c910-19f4-4a4a-bca9-6c18b7d9a918.jpg "style =" width: auto; height: auto;" />
This raw material with methacrylate polyurethane foam molding, like polyurethane foam toast bread. Can be used for industrial equipment polyurethane foaming can also be manually surrounded by woodworking boards polyurethane foaming, polyurethane foamed cotton is like a square piece of bread, sponge products are cut into pieces by automatic slicer, thin and thick drilling according to different regulations, polyurethane foam cotton can also adjust soft strength. Seat cotton generally choose 25~28kg/cubic, other selection of 20~22kg/cubic relative density. Although the soft strength and relative density of sponge are immediately related, they are also related to different preservative secret recipes. Therefore, the field is divided into high elasticity, gray super, cool gray super and soft cotton. When designing products for application, effective scientific research and matching should be carried out according to different modeling design and structure. Generally, sponges with different ductility and relative density should be matched in three positions: upper, middle and lower. There is a kind of raw material called fireproof rock wool (flame retardant cotton) in the sponge. In fact, before the polyurethane foam sponge, the secret recipe of the raw material is added with fireproof agent, such as chlorine and bromine, which will cause fire extinguishing smoke when the sponge is on fire, which has the effect of flame retardancy.
In the software of the regenerated sponge production and processing system, the sponge purchased by folk custom is definitely not allowed to be applied to the regenerated sponge production process, and the applied sponge flavor is quite prominent. The smell of recycled sponges in the sales market is partly due to the production and processing of used sponges. Therefore, good recycled sponge customers can buy and apply at ease. In all walks of life in the social and economic infrastructure and people's daily life, the total output of polyurethane material products in the world is close to 7 million tons every year. After the joint consumption and application of such products in the processing process, there will be a lot of waste: because the production process is different, 8%-15% of waste corner materials will be generally caused; In addition, after the service life of polyurethane material products is exceeded, its characteristics will be greatly reduced and damaged, all this waste must be reasonably acquired, resolved and reused.
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How to identify natural sponge and artificial sponge?
Compared with artificial sponges, natural sponges do not have static electricity that hurts the human body, do not peel off and last long. The sponge that lives in the sea is the real sponge, and the artificial "sponge" just imitates the structure of the natural sponge. Natural sponges that live in seawater are mostly grayish yellow, brown or black lumps. Its body surface has many bulges, there are many small holes beside the bulge, and there is a large hole at the top of the bulge. Seawater flows in from small holes and out from large holes, and those tiny creatures enter the sponge with the water and become "self-contained" food. Therefore, although the sponge is called "the flowers and fruits of the sea", it looks like a plant, but it is actually an animal.
Buy a pack of large salt or coarse salt, put the coarse salt and dirty plush toys into a larger plastic bag, and then fasten the mouth of the bag tightly and shake it vigorously. You will surely find that the plush toys are clean. The crude salt removed became gray-black due to the adsorption of dirt. The principle is the use of salt that is sodium chloride adsorption of dirt. Soda powder can also be used instead of coarse salt, the same usage. This method is more suitable for large plush toys and plush toys that can not be washed with sound.
The main ingredient of the sponge?
Polyurethane soft foam rubber, polyurethane is one of the most common polymer materials in life, widely used in the production of various "sponge" products. Now there are three kinds of sponges on the market, 1: polyurethane type, burning to generate a large number of cyano-containing gases, these gases are very toxic and suffocating. 2: polyethylene type, combustion of carbon-containing gas, this kind of gas toxicity. 3: polystyrene type, this kind of foam burning decomposition of a small amount of styrene monomer, toxic, but not as toxic as polyurethane.
Sponge manufacturers analyze the performance of packaging sponge products into what
Sponge manufacturers analyze the performance of packaging sponge products into what?
What are the functions of the packaging sponge?
What is the function of packing sponge?
Sponge manufacturers take you to understand the main functions of sponge
What are the main functions of sponge manufacturers to take you to understand?
