Pet preform mold injection molding principle
Pet preform is a typical injection molding product, easy to transport, mostly plastic material, uniform texture, good insulation, is an intermediate product of plastic bottles, oil drums.
Chinese name PET bottle blanks Foreign name Features Typical injection molding products Advantages Easy to transport, good insulation, etc. PET full name Polythylene terephthalate Required equipment Injection molding machine, mold, crusher and other classification aseptic cold filling cap (PE) Under a certain temperature and pressure, the raw material is filled in the mold and processed under the injection molding machine to form a preform having a certain thickness and height corresponding to the mold.
The PET material is polyethylene terephthalate. It is the main type of thermoplastic polyester, English name Polythylene terephthalate referred to as PET or PETP (hereinafter referred to as PET), commonly known as polyester resin. It is a polycondensate of terephthalic acid and ethylene glycol, together with PBT, collectively referred to as thermoplastic polyester, or saturated polyester. PET is a milky white or highly crystalline yellow polymer with a smooth and shiny surface. Creep resistance, fatigue resistance, friction resistance and dimensional stability are good, abrasion resistance is small, hardness is high, toughness of in thermoplastic plastics; electrical insulation performance is good, temperature is small, but corona resistance is poor. Non-toxic, weather-resistant, chemical resistant, stable, low water absorption, resistant to weak acids and organic solvents.
Processing equipment required injection molding machine, mold, grinder, mixer, production workshop, air pump.PET bottles are often used for packaging, and packaging is often stacked during transport or inventory. At this time we will consider the ability to bear. In the PET bottle compression test process, the PET bottle is placed in the machine's two horizontal pressure plates, and the PET bottle compression machine is started. The two pressure plates pressurize at a certain test speed. The instrument automatically stops and automatically saves data when it crashes. The conventional detection of PET bottles includes bottle wall thickness detection, pressure resistance detection, and bottle cover opening fatigue detection. We all have our own quality inspection department.
Pet preform mould have a strong application, widely used in daily necessities, daily chemical packaging and other fields. From mold processing to machinery and equipment have a strong picky, easy to get started, and difficult to do. PET preforms are reprocessed by blow molding to form plastic bottles, including bottles for cosmetics, medicine, health care, beverages, mineral water, reagents, etc. This method of making bottles is called a two-step method, in which preforms are formed by injection molding, again After blow molding to form a PET plastic bottle.
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