What are the composition of coffee packaging plastic bag?

　　The plastic we usually use is not a pure substance, it is prepared by many materials. Among them, the polymer polymer (or synthetic resin) is the main component of plastic. In addition, in order to improve the performance of the plastic, various auxiliary materials must be added to the polymer, such as fillers, plasticizers, lubricants, stabilizers, stabilizers, and stabilizers,, stabilizers, stabilizers, stabilizers, stabilizers, stabilizers, and stabilizers,, stabilizers, stabilizers, stabilizers, stabilizers, stabilizers, stabilizers, stabilizers, and stabilizers,, stabilizers, stabilizers, stabilizers, stabilizers, stabilizers, stabilizers, stabilizers, and stabilizers,, stabilizers, stabilizers, and stabilizers, stabilizers, stabilizers, stabilizers, and stabilizers. In order to become a plastic packaging bag with good performance.

　　Synthetic resin

　　Synthetic resin is the most important component of plastic, and its content in plastic is generally 40%to 100%. Because the content of large and the nature of the resin often determines the nature of plastic, people often regard resin as synonymous words of plastic. For example, polyvinyl chloride resin mixes with polyvinyl chloride plastic, phenolic resin and phenolic plastic. In fact, resin and plastic are two different concepts. Resin is an unprocessed primitive polymer. It is not only used to make plastic, but also coatings, adhesives and synthetic fiber raw materials. In addition to a small part of the plastic containing 100%resin, most of the plastic needs to be added in addition to the main component resin.

　　filler

　　Filler is also called filling, which can improve the strength and thermal resistance of plastic and reduce costs. For example, adding wood powder to the phenolic resin can greatly reduce costs, making phenolic plastic one of the cheapest plastics, and at the same time, it can also significantly improve the mechanical strength. The filler can be divided into two types: organic fillers and inorganic fillers. The former such as wood powder, fragmented cloth, paper and various fabric fibers, etc., latter, such as glass fiber, diatomite, asbestos, charcoal black, etc.

　　Plasticizer

　　Plastic agents can increase the plasticity and softness of plastic, reduce brittleness, and make plastics easy to process. The plasticizer is generally mixed with the resin, non -toxic, odorless, and the most commonly used organic compounds for high -boiling points for light and heat stability. The most commonly used is phthalate. For example, when producing polyvinyl chloride plastic, if more plasticizers are added, a soft polyvinyl chloride plastic can be obtained. Essence

　　stabilizer

　　In order to prevent the decomposition and destruction of light and heat during processing and use of synthetic resin, and extend the service life, the stable agent should be added to the plastic. Commonly used are hard fat acid salts, epoxy resin, etc.

　　Colorant

　　Coloring agents can make plastic have a variety of bright and beautiful colors. Common organic dyes and inorganic pigments are used as color.

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