Snap lid manufacturing process and snap lid

Abstract

The invention provides a snap lid manufacturing process and a snap lid, and belongs to the technical field of machinery. The process solves the problem that an existing snap lid has poor toughness andeasy crushing. The snap lid comprises a thermoforming snap lid body, the snap lid body is stamped with a pre-break mark, and a pull ring is thermally fused with the snap lid body. The manufacturing process comprises the steps of step a, selecting a sheet made of a plastic material and performing thermoforming to form the snap lid body on the sheet; step b, pressing the corresponding snap lid bodyon the sheet, and installing, hot-melting and connecting the pull ring to form a snap lid blank with the pre-break mark; step c, trimming the corresponding snap lid blank on the sheet and separatingthe sheet to form the snap lid. The snap lid is made by the thermoforming, molecules are arranged in strip-shaped line segments, the tightness between the molecules is good, so that the overall toughness of the lid body is good, the crushing is not easy, the yield is high, crushing is not easy in the tearing process, and operation is convenient.

Description

technical field [0001] The invention belongs to the technical field of machinery, and relates to a manufacturing process of an easy-open lid and the easy-open lid. Background technique [0002] Easy-open lid, also known as easy-open lid, is used to seal the lid of the can with a pull ring. It is pre-engraved with a score line of a certain depth and riveted with a pull ring. When opening, it can be safely torn along the score line. Suitable for iron cans, aluminum cans, composite cans, PET plastic cans and paper cans, etc., involving oral liquid, mineral water, beverages, alcohol and canned food industries. The traditional easy-open lids are made of metal materials, so a large amount of metal materials such as aluminum, platinum, and iron are consumed every year, and the required cost is relatively high, and the easy-open lids made of metal materials are easy to scratch people after being opened. In this regard, people have developed a plastic easy-open lid. [0003] Such a...

AI Technical Summary

Problems solved by technology

[0005] The easy-open end is different from ordinary can lids. There are pre-cut marks of a certain depth and a pull ring on the lid body. Tear off the easy-open end with the pre-broken cross through the pull ring. As mentioned above, the existing plastic easy-open end is formed by injection molding, and the molecular structure of the easy-open end formed by injection molding changes during the injection molding process. , the molecules are arranged in a block-like line segment structure, the intermolecular tightness is poor, its molecular structure is similar to tempered glass, the toughness is poor, it is easy to be crushed, and the yield is low. Crushing, the fragments fall into the corresponding cans and cause the contents of the cans to be polluted

At the same time, injection molding is a mold to form an easy-to-open lid, and the production efficiency is low. For example, mass production requires a large number of molds, and the cost is relatively high.

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