Bag Making Machine is a kind of machine that makes all kinds of plastic bags or bags of other materials. Its processing range is bags of various sizes, thicknesses and specifications of plastic or other materials. Do you know how plastic bags are made? What are its components?
In fact, the raw materials of plastic bags are composed of synthetic resins, fillers, plasticizers and stabilizers.
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Bag making machine Synthetic resin, synthetic resin is the main component of plastics, and its content in plastics is generally 40% - 100%. Because of its high content, and the nature of resin often determines the nature of plastic, so people often regard resin as a synonym for plastic. For example, PVC resin and PVC plastic, phenolic resin and phenolic plastic are confused. In fact, resin and plastic are two different concepts. Resin is a kind of raw polymer, which is not only used in the manufacture of plastics, but also the raw material of coatings, adhesives and synthetic fibers. In addition to a small part of plastic containing 100% resin, the vast majority of plastic, bag making machine in addition to the main component resin, also need to add other substances.
Filler, filler also known as filler, it can improve the strength and heat resistance of plastics, and reduce the cost of plastics. For example, the cost of phenolic resin can be greatly reduced by adding wood powder, which makes phenolic resin one of the cheapest plastics, and can significantly improve the mechanical strength. Fillers can be divided into organic fillers and inorganic fillers. The former includes wood flour, rags, paper and various fabric fibers, while the latter is glass fiber, diatomite, asbestos, carbon black, etc.
Plasticizers, plasticizers can increase the plasticity and softness of plastics, reduce brittleness, and make plastics easy to process. Plasticizers are usually organic compounds with high boiling point, which are miscible with resin, nontoxic, odorless, light and heat stable, and phthalate esters are the most commonly used. For example, in the production of PVC plastics, soft PVC plastics can be obtained by adding more plasticizers, while rigid PVC plastics can be obtained without or less plasticizer (dosage < 10%).
Stabilizer: in order to prevent the synthetic resin from being decomposed and damaged by light and heat in the process of processing and using, and prolong the service life, the bag making machine should add stabilizer into the plastic. Commonly used are stearate, epoxy resin and so on.
November 13, 2020
