Straight-split pouch, method for manufacturing same, and device for manufacturing the pouch

Abstract

A straight-split pouch, a method for manufacturing the pouch, and a device for manufacturing the pouch. The pouch is based on a front synthetic resin sheet and a rear synthetic resin sheet, has a notch marking the tear starting point at the openable portion, and has a series of multiple grooves for splitting disposed at a predetermined distance from one another along a straight line at the openable portion starting from the notch. The method includes producing a base film; producing the grooves for splitting; applying an adhesive to the surface protection layer and drying the layer; adhering the base film to the surface protection layer; sealing a large-area sheet; and cutting the sealed large-area sheet and forming the notch. The device includes first and second winding portions; an adhesive application portion; a chamber; a shaping apparatus; a laminating treatment portion; and a heat seal and cutting portion.

Description

TECHNICAL FIELD[0001]The present invention relates to a straight-split pouch for packaging a product which needs to be protected from moisture or oxygen for a long time and, more particular, to a straight-split pouch which has a predetermined straight cutting line so as to be smoothly cut along the cutting line at all times during opening, a method for manufacturing the pouch, and an apparatus for manufacturing the pouch.BACKGROUND ART[0002]The primary purpose of packaging is to protect and preserve the contents of the packaging. In particular, a packing material having excellent vapor and gas barrier properties is used for a product, whose preservation is influenced by moisture or oxygen, and a secure seal for sealing a container is required.[0003]However, easiness off taking out the contents of the packaging, i.e., easy opening performance is also an important function of the packaging as well as the protection and, when the two opposing factors such as sealability and openability...

AI Technical Summary

Benefits of technology

The present invention relates to a tear-open pouch that can be easily and smoothly opened without the contents spilling out or getting dirty. The pouch has good cutting performance and is designed to allow for regular tearing along a straight cutting line, even when there is an irregular tearing direction. The method and apparatus for manufacturing the pouch allows for the forming, sealing, and cutting of large area sheets all in one continuous process, which is beneficial for mass production.

Problems solved by technology

However, the pouch may easily burst by a small external pressure such as impact or pressure due to the perforations, and thus the above method is mainly applied to small pouches for packaging powder products such as instant coffee, condiments, etc.

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