Bottle cap

Abstract

The invention discloses a bottle cap which comprises the cap top and the circumference wall extending downwards along the edge of the cap top, wherein a leakage-resistant blade ring with closed circumference is concentrically arranged on the cap top and extends in the same direction with the circumference wall; a leakage-resistant ring with the closed circumference is arranged on the cap top between the blade ring and the circumference wall; the leakage-resistant ring is provided with an inner wall surface; a bottle opening is tightly abutted between the blade ring and the leakage-resistant ring; the inner wall surface of the leakage-resistant ring comprises a first conical surface section and a second conical surface section; in the cross section vertically downwards along the radius of the cap top, the angle of the first conical surface section opening outwards from the inner bottom surface of the cap top is alpha, and the angle of the second conical surface section opening outwards from the inner bottom surface of the cap top is beta; and the alpha is larger than beta and less than 180 DEG, and the beta is larger than 90 DEG. The cap surface with the design of the inner wall of the leakage-resistant ring can bear larger sealing pressure, can not cause the phenomenon of uneven cap surface after the bottle cap is sealed and is beneficial to the subsequent working procedure of screen printing. Moreover, the second conical surface section can adapt to various bottle openings, and the bottles have good sealing properties.

Description

technical field [0001] The present invention relates to a bottle cap, more particularly, relates to a bottle cap with an anti-leakage ring which can effectively prevent leakage. Background technique [0002] In the bottle cap in the prior art, in the section along the vertical direction of the cap top radius: the included angle between the inner wall of the leak-proof ring at the inner bottom of the bottle cap and the top of the bottle cap is 90°, and it stops at the inner bottom surface of the cap top. There is also a convex ring on the outside of the leak ring. When the pressure in the bottle is too high, it is easy to cause uneven cover surface, which seriously affects the quality of subsequent cover surface silk screen printing, and the vertical 90° design cannot adapt to different styles of bottle mouths. Achieve leak-proof effect. Contents of the invention [0003] The object of the present invention is to provide a bottle cap which can effectively prevent leakage a...

AI Technical Summary

Problems solved by technology

[0002]The bottle cap in the prior art, in the section along the vertical direction of the cap top radius: the inner wall of the leak-proof ring at the inner bottom of the bottle cap and the top of the bottle cap The included angle is 90°, and a convex ring is provided outside the leak-proof ring on the inner bottom surface of the cap top. When the pressure in the bottle is too high, it is easy to cause the cap surface to be uneven, which seriously affects the quality of the subsequent cap silk screen printing. And the vertical 90° design cannot adapt to different styles of bottle mouths to achieve the leak-proof effect

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