Sealed vessel and method of producing the same

Abstract

It is an object of the present invention to provide a container in which it is difficult for liquid to drip at a mouth portion having a good touch sensation by forming a structure in which a welded portion that was laser welded in a sealed container does not form a flange, and to carry out the achievement of making polymer material unnecessary and making excessive material in the wind-fastening portion unnecessary. Further, it is also an object to construct the lid and barrel of the vessel by using the same material, thereby facilitating the recycling of material. The sealed container in which a container body 1 having an opening 9 is sealed by a lid portion 3 which closes and covers said opening, comprising a welded portion 4, 14 in which an outer wall surface of a peripheral portion 2 of said opening or an edge 12 surface of said opening and an inner wall surface of said lid portion are laser welded in order to make it possible for at least an inner wall surface of the peripheral portion of said opening from an inner wall surface 6 of said container body to make contact with container contents.

Description

technical field [0001] The present invention relates to a hermetically sealed container capable of enclosing contents such as food and drink in a well-sealed manner and reducing liquid dripping at a drinking mouth with a good touch feeling, and particularly relates to a hermetically sealed container having a welded portion welded by laser and a method for manufacturing the same. Background technique [0002] Various containers such as bottles, cans, and plastic containers are known as containers for beverages, for example. In recent years, cans and plastic containers have been widely used from the viewpoint of convenience such as excellent handling properties. Among them, tanks are more widely circulated due to the low price of containers, fast production speed, and high transportation efficiency. The can is generally composed of a bottomed cylindrical "tube part" and a "lid part" closing the opening of the tube part. Since it is necessary to properly join the cylinder por...

AI Technical Summary

Problems solved by technology

[0009] If the crimping method is used to seal metal cans, the use of polymer materials and the margin of the can material in the crimping part are both necessary, which becomes a major cause of cost increase

The laser welded tank container represented by Patent Document 1 is researched for the purpose of reducing the amount of material used and saving polymer materials. Laser welding is tested in order to replace the existing coiling, but it cannot surpass the coiling method. rather than practical

[0010] In addition, although the laser-welded can container represented by Patent Document 1 is not welded, a flange is still formed, which is not conducive to drinking and promotes dripping.

Thus the disadvantages caused by the flange are still not solved

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