The plastic product is processed with plastic, and its product generation principle is to heat and soften the flat plastic hard pieces, adsorb on the surface of the mold with vacuum, and then cool and form, and the product is widely used in the electronics and electrical industry, the food industry, the hardware tool, the cosmetics industry, the toy industry, and the daily necessities. Industry, medicine, health care products, automobiles, stationery, stationery and other industries.
1. Classification of plastic packaging
Blister packaging: plastic products are produced by blister process, and the products are packaged by corresponding equipment. The packaged products can be divided into: plug-in card, suction card, double bubble shell, half bubble shell, folding shell, seventy percent off bubble shells, etc. Blister packaging products include: shell, tray, plastic box, synonyms are: vacuum hood, bubble cap and so on.
Bubble shell
The transparent plastic hard sheet is made into transparent plastic with convex shape, and is covered on the surface of the product to protect and beautify the product. Also known as bubble cover, vacuum cover and plastic mask. According to the form of bubble shell, it can be divided into single bubble shell, double bubble shell, card inserting shell and suction card shell.
Plastic blister box
It is a class of Blister products with a cover and a bottom. The bottom and the cover are called folding plastic absorbing boxes. The bottom and the cover are called the plastic box with the bottom cover.
Sucking "tray"
It is also called plastic inner support, which uses plastic suction technology to make plastic pieces of plastic into special grooves, placing products in the groove, and protecting and beautifying products.
Flocking inner support
It is a kind of plastic tray with special material, which will stick a layer of plush material on the surface of the ordinary plastic hard piece, so that the pallet has a feeling of plush on the surface of the tray, which is used to improve the grade of the packing.
Antistatic tray
It is a special plastic material tray, the material surface resistance value is less than 10 of the 11 Power ohms. It is mainly used for the plastic tray of electronic and IT products.
Mould "mould"
The mold used for plastic molding production is the lowest cost of plaster mold, followed by electroplating copper mold, the most expensive is aluminum mold. The mold is drilled with small holes, which are used for vacuum adsorption and thermalization of hard sheets to form Blister products.
2. The main advantages of plastic packaging
The main advantages of plastic packaging are to save raw and auxiliary materials, light weight, convenient transportation, good sealing performance and meet the requirements of green packaging. It can package any special-shaped products, packing without additional cushioning material; the packaged products are transparent and visible, beautiful in appearance, easy to sell, and suitable for mechanization and automation packaging. It is convenient for modern management, saving manpower and improving efficiency.
3. The production equipment and technology of the plastic packaging
The plastic packaging equipment mainly includes:
Blister forming machine, punch press, sealing machine, high frequency machine, folding machine.
Thermoforming process:
Plastic sheet - cutting - Sheet fixation - heating - forming - demoulding - material side - finished products
4. The requirements for the molding of the material
(1) plastic forming can only produce uniform products with uniform wall thickness (generally slightly chamfered), and can not produce plastic products with different wall thickness.
(2) the wall thickness of Blister molding is generally in the range of 1 to 2mm or thinner (the most commonly used sheet for small package blister packaging is 0.15 to 0.25mm).
(3). The tensile degree of the molded products is limited, the plastic container's diameter depth is not more than 1, and the extreme case should not exceed 1.5.
(4) plastic forming has poor dimensional accuracy, and its relative error is generally over one percent.
(5) in the process of blister production, we should pay attention to the change of weather at any time, understand temperature control and adjust at any time, so as to achieve the best.