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Date:24-08-2022
PVC (Polyvinyl Chloride) Chemical and Physical Properties Rigid PVC is one of the most widely used plastic materials. PVC material is an amorphous material. In practical use, PVC materials often add stabilizers, lubricants, auxiliary processing agents, impact agents and other additives. PVC materials have non-flammability, high strength, weather resistance and excellent geometric stability. PVC is very resistant to oxidizing agents, reducing agents and strong acids. However, it can be corroded by concentrated oxidizing acids such as concentrated sulfuric acid and concentrated nitric acid and is not suitable for contact with aromatic hydrocarbons and chlorinated hydrocarbons.
Polychlorination was discovered by accident to packing bag for food Manufacturers the first of the nineteenth century on at least two separate occasions by Henry Victory Regnault in 1835 and Eugen Bowman in 1872. On both occasions the polymer appeared as a white solid in a flask of ethylene chlorinated that had been left exposed to sunlight. In the early twentieth century the Russian chemists Ivan Ostromislensky and Fritz Klatte of the German chemical company Lodging Electronics both tried to use PVC (polyvinyl chloride) in commercial products but had difficulty in handling rigid and sometimes brittle polymers Block them hard. In 1926 Valdor Simon and the Blast Goodrich Company developed a method to plasticize PVC by blending it with various additives. The result was a more flexible and tractable material that soon achieved widespread commercial use.
There are two kinds of production of zippered self-sealing bags. One is direct film blowing. Above the self-sealing mouth is generally 1.8CM, and it is thicker near the self-sealing mouth. The method of attaching the clip chain, the latter method is mainly used in the production of composite bags.
The production of self-adhesive self-sealing bags is mainly made of a single film cross-cut, heat-sealed on both sides, the length of the front and back of the bag is different, one side is 3-5cm longer than the other side, and the part can be folded back. When using colloids such as sex glue, tear off the plastic cover on the colloid and fold it back to seal the bag.
use
Ziplock bags can be used for internal and external packaging of various small items (ornaments, hardware, toys). Ziplock bags produced with food-grade raw materials can store various small foods, tea, seafood, etc., moisture-proof, odor-proof, waterproof, insect-proof, and prevent things from being scattered; Zip-lock bags can also be used for clothing and other daily necessities. Packaging, widely used . Self-sealing bags can be produced by adding anti-static masterbatch during film blowing production, which are generally used in the electronics industry.
In plastic modification equipment, what are the characteristics of continuous rotor (FCM) mixer?
The internal mixer in the batch mixer is a kind of mixing equipment with excellent mixing performance, but its discontinuous work is not a big disadvantage. In order to convert it into continuous work and maintain the excellent mixing performance of the internal mixer, the FCM continuous mixer was developed, as shown in Figure 3-27. Due to the many controllable factors of FCM, its versatility is good, and it can complete mixing tasks in a wide range. It is used for filling polymers, unfilled polymers, plasticized polymers, unplasticized polymers, thermoplastic polymers It can also be used to mix plastics, rubber blends, masterbatches, etc., and can also be used to mix polyolefins and synthetic rubbers containing volatiles, especially for the blending, filling and reinforcement of heat-sensitive plastics. The main disadvantage is that it cannot be self-cleaning and it is troublesome to clean up.
Polychlorination was discovered by accident to packing bag for food Manufacturers the first of the nineteenth century on at least two separate occasions by Henry Victory Regnault in 1835 and Eugen Bowman in 1872. On both occasions the polymer appeared as a white solid in a flask of ethylene chlorinated that had been left exposed to sunlight. In the early twentieth century the Russian chemists Ivan Ostromislensky and Fritz Klatte of the German chemical company Lodging Electronics both tried to use PVC (polyvinyl chloride) in commercial products but had difficulty in handling rigid and sometimes brittle polymers Block them hard. In 1926 Valdor Simon and the Blast Goodrich Company developed a method to plasticize PVC by blending it with various additives. The result was a more flexible and tractable material that soon achieved widespread commercial use.
There are two kinds of production of zippered self-sealing bags. One is direct film blowing. Above the self-sealing mouth is generally 1.8CM, and it is thicker near the self-sealing mouth. The method of attaching the clip chain, the latter method is mainly used in the production of composite bags.
The production of self-adhesive self-sealing bags is mainly made of a single film cross-cut, heat-sealed on both sides, the length of the front and back of the bag is different, one side is 3-5cm longer than the other side, and the part can be folded back. When using colloids such as sex glue, tear off the plastic cover on the colloid and fold it back to seal the bag.
use
Ziplock bags can be used for internal and external packaging of various small items (ornaments, hardware, toys). Ziplock bags produced with food-grade raw materials can store various small foods, tea, seafood, etc., moisture-proof, odor-proof, waterproof, insect-proof, and prevent things from being scattered; Zip-lock bags can also be used for clothing and other daily necessities. Packaging, widely used . Self-sealing bags can be produced by adding anti-static masterbatch during film blowing production, which are generally used in the electronics industry.
In plastic modification equipment, what are the characteristics of continuous rotor (FCM) mixer?
The internal mixer in the batch mixer is a kind of mixing equipment with excellent mixing performance, but its discontinuous work is not a big disadvantage. In order to convert it into continuous work and maintain the excellent mixing performance of the internal mixer, the FCM continuous mixer was developed, as shown in Figure 3-27. Due to the many controllable factors of FCM, its versatility is good, and it can complete mixing tasks in a wide range. It is used for filling polymers, unfilled polymers, plasticized polymers, unplasticized polymers, thermoplastic polymers It can also be used to mix plastics, rubber blends, masterbatches, etc., and can also be used to mix polyolefins and synthetic rubbers containing volatiles, especially for the blending, filling and reinforcement of heat-sensitive plastics. The main disadvantage is that it cannot be self-cleaning and it is troublesome to clean up.
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