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3 points for the design of medicinal plastic bottles

Views:3     Author:Site Editor     Publish Time: 2020-09-18      Origin:Site

1 main points:

The medicinal plastic bottle is designed with affirmative essentials and principles in the design, and is designed according to the affirmative essentials. It has an effective application that fits the design concept and guarantees the performance advantages in the application.

Most of the bottoms of medicinal plastic bottles adopt convex bottom or flat bottom double-rounded layout, because the middle of the convex bottom of the bottle protrudes into the bottle to form an arch, which can increase the internal pressure resistance of the bottle body and guarantee the factory bottle body The stability. Injection blow molding can also restrain the plastic from collapsing and make the bottom of the bottle symmetrical. The flat-bottomed double-rounded bottom layout is mostly used for large-volume medical plastic bottles, which can better withstand the pressure from the inside of the bottle. The growth of the shape and size tends to be the shape of the thread at the neck of the small and medium-sized medicinal plastic injection blow molding.

This kind of bottle mouth thread situation is mainly due to the good compatibility with the bottle cap, because the moisture barrier performance of the drug packaging depends to a large extent on the precision of the bottle mouth and the bottle cap, here is the sealing performance of the reaction bottle mouth Whether it is an important part of good or bad. 

2 main points:

Recently, most manufacturers use Sichuan aluminum foil gaskets to electromagnetically seal the medical plastic bottle U, which greatly increases the sealing performance of the medical plastic bottle mouth. From the cross-section of the collar and shoulder of the circular medicinal plastic bottle, the neck and shoulder are composed of two tangent circular radii, which are divided into two segments from the tangent point. The important factor that affects the strength of the bottle shoulder is the angle of inclination of the bottle shoulder. When the shoulder is too flat, the bottle body is prone to collapse. If the shoulder length of the bottle here is 10mm, the inclination angle of the shoulder should be greater than 15 degrees, and the thickness of this part should not be less than 1mm (referring to the small bottle body).

3 main points:

Medical plastic bottles should be capped with a capping machine with adjustable torque after filling. The torque can be extracted according to the diameter of the cap according to the relevant scale. The common size of the bottle and the cap is an important prerequisite for moisture and vapor resistance, and the precision of the screw cap is the key to the quality of the moisture resistance.

In order to ensure the safety of medicines, the sealability of the bottle mouth should be improved at first to increase the moisture resistance effect. The bottle wall is too thin to be blow-molded and has low strength. It is usually required that the wall thickness of the other parts should be uniform except for the thickness of the bottle mouth and the threaded part. However, in order to improve the insulation and strength of pharmaceutical plastic bottles, the thickness of the bottle body is designed to range from 1.5 to 2 mm, and the current thickness tends to increase.


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