The introduction of PET plastic PET plastic is English Polyethylene terephthalate, or PET or PETP. Chinese meaning is: plastic products, mainly including polyethylene terephthalate oxalic ester PET and polyethylene terephthalate succinic ester PBT. Polyethylene terephthalate, commonly known as polyester resin, commonly known as polyester resin. It is a condensation polymer of terephthalic acid with ethylene glycol, collectively known as thermoplastic polyester with PBT, or saturated polyester
PET recycled plastic can be used on food packaging, can realize the recycling utilization of unlimited times. It is within easy reach of the environmental protection technology in our country. As the package of plastic raw materials from oil, in order to save resources, many developed countries have developed the recycling of plastic packaging technology, as early as in 1991 has been using recycled PET plastic slice for food packaging materials. 2. The current situation of the development of our country PET plastic current polyester PET plastic packaging container is mainly confined to two-way stretch polyester bottle blow molding. Therefore, the following main from the development of PET bottle in China to introduce the development status of China’s PET plastic, and two cases of PET bottle production industry leading group. Two-way stretch polyester blow molding bottles in plastic packaging industry in China started late, but since the 1980 s from ?
Mainstream products in the domestic PET bottle, limited to the early drinks such as cola, mineral water, distilled water use packaging container, applications for its excellent performance and reasonable price to obtain the user’s popular, on the basis of the successful application of the beverage packaging, PET bottle has in recent years in heat-resistant bottled drink black tea, green tea, fruit juice, and edible oil, cosmetics, medicine, pesticide and other industries the application of extension. Great prospects for development of our country PET bottle plastic molding equipment, at the same time, we should see the PET bottle plastic molding equipment and industrial developed countries differ greatly. In today’s market internationalization, domestic PET bottle injection molding equipment, if there is no technical advantages on performance, the developed equipment can only when the exhibits, not when the goods PET bottle
The author mainly discussed the cold bottle beverage bottle pressure molding process. 1 equipment Along with the advance of science and technology and the production scale, PET bottle blowing machine is more and more high degree of automation, production efficiency is becoming more and more high. Continuously improve equipment production ability, by the former thousands of bottles per hour production development to the present production of tens of thousands of bottles per hour. Operate by manual push button in the past to now also full computer control, greatly reduced the difficulty of the process operation, increase the stability of the process. Although the manufacturer is different, but the similar equipment principles, generally include for slab system, heating system, bottle blowing system, control system and auxiliary five most. 2 blow molding processes of PET bottle blow molding process. The important factors influencing the PET bottle blow molding technology has a bottle of ?
After heating unused bottle preform, must be reheated to store more than 48 h can use again. A bottle of billet storage time can’t more than six months. Bottle preform quality depends largely on the merits of the PET material, should choose the material easy to blow, easy to finalize the design, and formulate reasonable bottle preform molding process. Experimental results show that the same viscosity of PET bottle preform materials forming, imported raw materials than domestic material for blow molding; And the same batch of bottles billet, production date, blow molding technology may also have bigger difference. Bottle preform quality decides the difficulty of blow molding process, the requirement to the bottle preform is pure and transparent, without impurities, no color, length and halo around the spot right on point.