20l plastic bucket what kind of development process?

20 l plastic bucket what kind of development process?

 

 20 l plastic bucket widely applied in life, 20 l plastic buckets development process is what like? The following Xiaobian to introduce.

    If that 20 liters plastic barrels processing history, we must first talk about plastic barrel processing, and it had better be traced back to the 1890s, after the birth of celluloid, its flammability, can only use molded into lumps rule of law, and then machined into a sheet, the sheet thermoforming process is available. This is the first plastics processing. Cast molding, with the advent of the phenolic resin and successful research; injection molding began in the 1920s, used in the manufacture of cellulose acetate and polystyrene; the mid-1930s, the successful development of soft PVC extrusion, plastic dedicated the advent of a single screw extruder accordingly; 1938 twin-screw extruder is also put into production. Early 1940s, made out of polyurethane foam, blow molding technology for the production of polyethylene hollow products. 1952 reciprocating screw injection machine available, the injection molding technology into a new stage. 60 to 70 years, new developed plastics processing technologies: new variety of reinforced plastics molding methods, such as winding, pultrusion, sheet molding, reaction injection molding, structural foam molding, profile extrusion molding, sheet Solid molding and co-extrusion, co-injection molding. In the 1980s, plastic processing toward efficient, high-speed, high-precision, energy saving, large-scale or ultra-small, ultra-thin and other direction, into the field of computer technology, the entire plastic processing technology to a new level.