We specialize in building plastic injection mold,
2K mold for automotive lighting, Exterior Mirror, Air induction, Interior, Exterior and others.
Japan DSC_5560
Category:
JapanOthers
Product Description
It mainly comprises a concave die with variable cavity composed of a concave die assembly base plate, a concave die assembly and a concave die assembly plate, and a punch die with variable core composed of a punch assembly base plate, a punch assembly, a punch assembly, a cavity truncation assembly and a side truncation assembly plate.
In order to improve the performance of plastics, it is necessary to add various auxiliary materials to the polymer, such as fillers, plasticizers, lubricants, stabilizers, colorants, etc., in order to become a plastic with good performance.
1, synthetic resin is the most important component of plastics, and its content in plastics is generally 40% to 100%. Because of the large content, and the nature of the resin often determines the nature of the plastic, so people often regard the resin as a synonym for plastic. For example, polyvinyl chloride resin is confused with polyvinyl chloride plastic, and phenolic resin is confused with phenolic plastic. In fact, resin and plastic are two different concepts. Resins are raw, unprocessed polymers that are used not only to make plastics, but also as raw materials for coatings, adhesives, and synthetic fibers. In addition to a very small part of plastics containing 100% resin, the vast majority of plastics, in addition to the main component resin, also need to add other substances.
2. Packing
Fillers, also known as fillers, can improve the strength and heat resistance of plastics and reduce costs. For example, the addition of wood flour to phenolic resin can greatly reduce the cost, making phenolic plastic one of the cheapest plastics, while also significantly improving mechanical strength. Fillers can be divided into organic fillers and inorganic fillers, the former such as wood powder, rags, paper and various fabric fibers, the latter such as glass fiber, diatomaceous earth, asbestos, carbon black and so on.
3, plasticizer
Plasticizers can increase the plasticity and softness of plastics, reduce brittleness, and make plastics easy to process and form. Plasticizers are generally high boiling organic compounds that can be miscible with resins, non-toxic, odorless, stable to light and heat, and the most commonly used are phthalates. For example, when producing PVC plastics, if more plasticizers are added, soft PVC plastics can be obtained, and if no or less plasticizers are added (the amount is less than 10%), rigid PVC plastics can be obtained.
4. Stabilizer
In order to prevent the synthetic resin from being decomposed and destroyed by light and heat during processing and use, and to extend the service life, a stabilizer should be added to the plastic. Commonly used are stearate, epoxy resin and so on.
5. Coloring agent
Colorants can make plastics have a variety of bright, beautiful colors. Organic dyes and inorganic pigments are commonly used as colorants.
6. Lubricant
The role of the lubricant is to prevent the plastic from sticking to the metal mold during molding, and at the same time make the surface of the plastic smooth and beautiful. Commonly used lubricants are stearic acid and its calcium magnesium salt. In addition to the above additives, flame retardants, blowing agents, antistatic agents, etc., can also be added to plastics.
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