PET cosmetic plastic packaging production and processing technology and equipment, rounding

PET plastic cosmetics packaging production can be divided into two kinds, one kind is with cosmetics packaging production, such as filling carbonated beverages cosmetics packaging production; Another kind of pressureless cosmetics packaging production, such as filling water, tea, oil and other cosmetics packaging production. Tea beverage cosmetics packaging production is mixing polyethylene naphthalate formic acid ethyl ester ( PEN) Modified PET cosmetics packaging production or PET with thermoplastic aromatic ester compound cosmetics packaging production, on the classification of genus hot cosmetics packaging production, can be more than 80 ℃ heat; Cosmetics packaging production water is cold cosmetics packaging production, for heat resistance requirements. Hot on the molding process and cold cosmetics packaging production and cosmetics packaging production is similar. The author mainly discuss cold cosmetics packaging a pressure beverage in the production of cosmetics packaging production molding process. 1 equipment along with the advance of science and technology and the production scale, PET cosmetics packaging production machine more and more high degree of automation, production efficiency is becoming more and more high. Continuously improve equipment production ability, by the former production per hour thousands of cosmetics packaging production development to the present production of tens of thousands of cosmetics packaging production 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. Currently, the main note pull equipment manufacturers have French SIDEL company, Germany KRONES our company etc. Although the manufacturer is different, but the similar equipment principles, generally include for slab system, heating system, cosmetics packaging production system, control system and auxiliary five most. 2 plastic craft PET plastic cosmetics packaging production process. The important factors influencing the PET plastic cosmetics packaging production process there are cosmetics packaging production of billets, the heating, beforehand, mould and environment, etc. 2. 1 cosmetics packaging production blank plastic cosmetics packaging production preparation, will first PET slice injection molding for cosmetics packaging production base, it requires that the secondary recycling material ratio cannot be too high ( Less than 5%) Number cannot exceed twice, and recycling and low molecular weight and viscosity can't ( The molecular weight of 31000 - 50000, characteristic viscosity of 0. 78 - 0. 85立方厘米/ g) 。 Injection molding of cosmetics packaging production base to store more than 48 h before use. After heating unused cosmetics packaging production base, must be used to store more than 48 h can be reheated. Cosmetics packaging production of billet storage time should not exceed six months. The billet quality cosmetics packaging production depends largely on the merits of the PET material, should choose the material, easy expansion, easy to shape and make reasonable cosmetics packaging production of blank forming process. Experiments show that the viscosity of PET same material, the cosmetics packaging production forming import raw material than domestic material easy forming; And the same batch of cosmetics packaging production base, production date, plastic process may also have bigger difference. Cosmetics packaging production billet quality decides the difficulty of plastic process, demand for cosmetics packaging production billet is pure and transparent, without impurities, no color, length and halo around the spot right on point. 2. 2 heating cosmetics packaging production of billet heating are done by the heating oven, the temperature by artificial setting, automatic adjustment. In the oven by the far infrared lamp emit far infrared ray radiation heating, cosmetics packaging production carried out by the fan at the bottom of the oven heat circulation, make the evenness of temperature in the oven. Cosmetics packaging production billet forward movement and rotation in the oven, the cosmetics packaging production blank wall heated evenly. Tubes in the oven to the layout of the top-down show area glyph, commonly more than two head, less in the middle. Oven heat from the tubes open quantity, the overall temperature setting, oven heating power and paragraphs than common control. Lamp of open to combine to adjust the cosmetics packaging production in advance. To make the oven to work better, its height, the adjustment of the cooling plate and so on is very important, if improper adjustment, easy to appear when plastic bulge cosmetics packaging production ( Cosmetics packaging production mouth) Hard, head and neck ( The neck is expected to pull doesn't open) Wait for blemish.