Rust-proof easy-to-open metal cover with threads

Abstract

The invention relates to a rust-proof easy-to-open metal cover with threads. The rust-proof easy-to-open metal cover comprises a cover body, the cover body comprises a metal cover body and a sealing silica gel sleeve mounted in the metal cover, the metal cover comprises a top and a skirt part integrally formed with the top, the center of the top is provided with a sealing elastic pad correspondingto the sealing silica gel sleeve, the edge of the bottom of the skirt part is provided with a rolled edge integrally formed with the skirt part, the rolled edge is radially arranged along the skirt part, the inner wall of the skirt part is provided with skirt part internal threads, and the inner wall of the sealing silica gel sleeve is provided with sealing silica gel sleeve internal threads. Therust-proof easy-to-open metal cover with threads has the advantages that 1, rusting is not easy, the internal threads of a metal outer cover and the external threads of a bottle opening are preventedfrom directly rubbing, so that the metal cover body is protected, the rusting is prevented, and the anti-rust capability is better; and 2, opening is easy, due to the fact that the internal threads of the sealing silica gel sleeve make direct contact with the threads of the bottle opening, the friction coefficient is small, and the metal cover body is easier to unscrew when in use.

Description

technical field [0001] The invention relates to a threaded antirust easy-open metal cover, which relates to the field of container packaging and sealing. Background technique [0002] There are two ubiquitous types of metal bottle caps with a molded sealant layer on the market. [0003] Among them, the first type of metal molded bottle cap, by changing the shape of the mold in the molding process, the molded rubber layer itself has threads to match the bottle mouth, and the bottom edge of the bottle cap is provided with curling, and the direction is radial outward. The advantage of this bottle cap is that the friction coefficient between the adhesive layer and the glass is small, so the bottle cap is easy to open. At the same time, since there is no direct contact between the metal and the bottle cap, the metal surface will not be worn, so the metal part is not easy to rust . However, the disadvantage of this kind of bottle cap is that since the thread is completely forme...

AI Technical Summary

Problems solved by technology

But the shortcoming of this kind of bottle cap is, because the screw thread that metal sidewall produces directly contacts with bottle mouth, bottle mouth can destroy the protective outer layer of metal, makes metal get rusty more easily like this, simultaneously, finds in actual use process, metal and bottle mouth The coefficient of friction between glass is greater than that between silicone and metal, so the cap is not easy to twist off

[0005] The common disadvantage of these two kinds of metal molded bottle caps is that since the curling direction of the bottom edge is radially outward, the metal edge inside the curl is more likely to come into contact with the external environment, and there is no metal protective outer layer for the metal edge here, Therefore there is also a greater chance of rusting

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