COP bottle one-step injection stretch blow production process introduction

With the continuous progress of various production processes, more new materials are applied to more and more industries. COP material benefits from its advantages of high transparency, low protein adsorption, high rigidity, low birefringence, high temperature sterilization, etc. It is processed into COP bottles, which are used in the pharmaceutical packaging of high value-added and protein drugs.

COP vial

The processing technology of the COP bottle adopts the advanced one-step injection stretch-blow production technology. This process firstly uses the injection molding machine to inject the molding blank, stretch the hot parison longitudinally, and then pass in compressed air to stretch it laterally. For products with the same mold cavity shape, the injection, stretching, and blow molding processes are sequentially completed on one machine, so it is called the "one-step" bottle-making process.

After the COP bottle made by the one-step injection stretch-blow production process is stretched, the comprehensive mechanical properties such as transparency, surface rigidity, and impact resistance can be greatly improved, and the internal quality and dimensional accuracy of the product are more guaranteed. It is the most advanced in the world today. Stretching bottle-making process technology, compared with the two-step process, has high production efficiency, low labor intensity, and no secondary pollution. It is suitable for the production of high-grade plastics with bottleneck, high precision, good transparency, non-toxic, and good content preservation effect. bottle.

Technology is advancing, and various production processes are constantly improving. Just like the application of COP bottles in high-end drugs, the demand is the market, and after the market reaches a certain level, new demands will be derived, and all walks of life will be in constant change. development of. The one-step injection stretch-blow production process will improve the performance of the product during the upgrade and perfection, and better meet the market demand.