Sealing cover having opening tap for containers and method for manufacturing the same

Abstract

Disclosed herein are a sealing cover having an opening tap for containers and a method for manufacturing the sealing cover. The sealing cover includes a tapforming layer which is provided with the opening tap, and a sealing layer which is formed under the tap-forming layer and has a function of substantially sealing the container.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates generally to sealing covers having opening taps for containers and, more particularly, to a sealing cover for containers which has an increased adhesive area between an opening tap and the sealing cover so that a user can easily remove the sealing cover from a container, and a method for manufacturing the sealing cover.[0003]2. Description of the Related Art[0004]Different kinds of sealing covers are used to seal apertures of containers.[0005]Such sealing covers for containers have several functions such as a function of protecting the contents of a container, an easy-opening function, etc. The functions of the sealing covers also continue to evolve for the sake of consumer convenience.[0006]Recently, high-frequency induction heating is mainly used to seal the aperture of a container with a sealing cover, whereby the sealability of the sealing cover can be enhanced.[0007]In the high-frequen...

AI Technical Summary

Benefits of technology

The present invention aims to provide a sealing cover for containers that can effectively prevent delamination and has a better reliability. The sealing cover is designed to have a strong adhesive strength between layers, which prevents the opening tap from being removed when the container is opened. Additionally, the sealing cover can have a semi-circular or circular shape, making it more convenient for consumers to open the container. The heat-sealing resin layer can be made of polyolefin, EVA, EMA, or ionomer depending on the material of the container. Overall, the invention provides a sealing cover for containers that offers improved convenience, reliability, and better adhesion between layers.

Problems solved by technology

However, in the above method, because the shape and size of the sealing cover that adheres to the container to seal the aperture are the same as those of the portion of the container that defines the aperture thereof, it is inconvenient for a user to remove the sealing cover from the container.

Moreover, there is a disadvantage in that, because of the problem, the size of the tap is limited.

However, in this conventional technique, because only a half portion of the upper layer 32 that has a circular shape adheres to the lower layer 34, the adhesive strength therebetween is not sufficient.

Images