描述
In order to facilitate the mechanical loading of tablets and capsules in solid dosage forms, the design of the diameter of the bottle mouth is usually considered to contain a single volume of drugs plus an appropriate margin of space. Most of the threads at the neck of a plastic bottle are semi-circular in cross-section, with fine threads at both ends from the outside, or trapezoidal threads, called single threads. The shape of the threads at the neck of the bottle depends on a good interoperability of the cap, because the moisture barrier performance of the pharmaceutical packaging depends largely on the tightness of the cap and the mouth of the bottle after applying a torque, which is the main part reflecting the excellent sealing performance of the bottle. The initial design is a sealed gasket inside the cap, the external use of anti-theft type cap, this anti-theft cap can provide visible traces of sealing damage, its structure is mainly around the cap along the bottom of the side skirt has a small circle of holes to form a disconnect line. When twisting the cap due to the waveform flap pawl locked tightly under the convex ring at the lower end of the bottle mouth, counter-rotating the cap can be broken along the folded open line and locking ring. Now the plastic bottle mouth are used aluminum foil gasket electromagnetic induction sealing, its moisture-proof, sealed anti-theft performance at the same time, with the form of anti-theft cover is not necessary.
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