Hot runner and pay attention to the status quo and development of molding equipment

Extrusion blow molding with hot runner injection blow molding machine is mainly used for theproduction of small and medium-sized pharmaceutical plastic bottles, "push - pull - blow" or"injection stretch blow molding machine is used to produce" a large bottle of.

But because the bottle of hot runner injection blow molding bottle high flatness, bottle wall thickness average, especially between the bottle and cap has good sealing performance, can prevent the plastic bottle of the drug gas volatilization and external gas permeability to bottlefunction requirements, which makes this bottle completely comply with special requirements drug packaging. Because another blow mold can be arranged on the sliding bottom module, thebottom of the bottle body shape design flexibility. With the rapid development of domesticmedical industry, the amount of domestic medicine bottle will show a substantial growth.Therefore, some domestic equipment manufacturers in the digestion and absorption of foreignadvanced technology on the basis of improving to develop complete heating and replaces theparison in 2 processes. Pharmaceutical manufacturers tend to use "one-step injection stretchblow molding machine bottle". The National Drug Supervision Bureau as early as in the "Nine Five" period is put forward by hot runner injection blow molding method to produce high qualityplastic bottles. The two step is to model and injection stretch blow molding process composed of two independent machine separately.

Extrusion blow molding machine

Use of plastic bottle and extrusion blow molding hot runner injection blow molding machine production enterprise with the most. The two step will not cause pollution type products, andproducts of good uniformity.

Plastic bottle forming equipment up to other hollow plastic molding equipment, small size, fast speed, high precision, high efficiency. The three station can be run at the same time, highproduction efficiency, short cycle, and can realize full automatic counting and packing equipmentof hot runner, resulting in production efficiency is lower than the 3 station. At present, our country imported hot runner injection medicine bottle blow molding production line more than 40,the total production capacity of about 700000000 / year. Smooth, fast, good sealing, variety development costs and the cost of mold low price is the "two step" model of the upper hand, but because the injection tube and blow molding products step by step, unity,) to complete molding;the second step: the tube on the honeycomb heater or automatic cycle heating belt the heatingtemperature, and then moved to the blowing process of stretch blow molding with compressed air. Extrusion blow molding of complex shape, irregular and integral property and environmentetc. the bending strain is taller, with good use function. The main difference between the two is:"3 position" refers to the type of injection billet and the parison heating is done in a process, "4 position" refers to the efficient equipment, plastic injection molding parison molding process can be continuously carried out in a unified device on. Because the blow mold is composed of onlythe female die, so by simply adjusting the head or extrusion die gap is low can change thepremise.