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One-piece and two-stage is divided into two kinds. PET grain dryer use high temperature air is dehumidified, circulation in the hopper. Dry air, the dew point temperature must be between -29 ℃ and -40 ℃. Temperature of the dryer was set at between 177 ℃ and 182 ℃, dried for about four hours.įirst, injection molding processing system to a preform , which is fired into the mold cavity to melt, and then rapidly cooling, the preform temperature below the crystallization temperature range, made of transparent preform a second step of the preform is heated, it is higher than the glass transition temperature, and then extended, blow molding and cooling.
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Before preform injection molding, PET grain must be dried to a moisture content of 0.05% or less, so that it can create a good non-crystalline transparent preform. PET is a hygroscopic material, if the moisture content is too high, will produce at a high temperature hydrolysis process, the PET molecular chains and thermal decomposition of acetaldehyde, reduce physical and mechanical properties, the crystallization rate of speed, when the Preform Injection, will Preform partially crystalline bleaching, affecting the quality of the product. PET is a polymer, the most important feature is its molecular weight, molecular weight is the number of uniform molecular PET molecular chains, the number of molecules of longer chain link, the better the physical properties of PET. PET is a crystalline resin, a specific gravity of about 1.4, a melting point of 245 ℃, the molding temperature between about 290 ~ 315 ℃. Usually used in the manufacture of PET plastic container grain, must pay attention to the following features: (1) molecular weight (2) acetaldehyde content (3) the content of diethylene glycol (4) a carboxyl group (5) the percentage of total polymer ( 6) Melting point (7) a glass transition point (8) the degree of crystallinity. Polyethylene terephthalate (of PET) , having the features: (1) excellent in gas barrier properties (2) pressure resistance, creep resistance (3) Impact resistance (4) transparency, surface gloss (5) itself is odorless and Paul fragrance security (6) on food hygiene, and beautiful, easy molding, has been widely used in food containers. Here are some notes for the PET preform injection molding process, for all my friend, much know-how experience, much near to the perfect production. The final result is that the bad quality &bad production of PET preform in the customer factory, which will waste the money &energy &time of all. And in order to reduce the sell cost, many manufacturers also present the general purpose injection molding machine with C type of screw &big shot weight, while they obviously ignored to bring the important notes to the customer before they make a decision focus on the PET PREFORM PRODUCTION. We as a uniquely qualified team, are determined to achieve our mission with our experience, knowledge, talent and passion for what we are doing" Our Mission is to make available to all our esteemed customers a complete value for their Time and Money without making any compromises on Quality for we believe, "Quality is today's foundation for tomorrow's reputation" and hence we have a well established market and a large clientele who use our Pet Preform Mould (pet preform mold) Bases for Standardisation, Productivity & Profitability.Many friends would like to adopt the general purpose injection molding machie to produce the PET preform. "To establish our company as a completely reliable and cost effective solution provider for Tooling Requirements of the Packaging Industry around the world. This has made us a trusted "one stop destination" for all design & development needs that meet the technical competency and stringent international standards. Flexible policies have been adopted by Shree Ambica Technics.
#Pet preform mold professional
Shree Ambica Technics is establish in Ahmedabad, is one of the leading manufacturers, suppliers and exporter of Pet Mould, Pet Preform Mold (pet preform mould) to our valued clients at reliable prices in Ahmedabad, Gujarat, and India.The objective of Shree Ambica Technics has evolved over the last two decades with the specific aim of providing Pet Mould to our clientele a reliable service through continuous monitoring & professional approach, backed by highly talented, dedicated & experienced team work.