Sealed bag with unsealing tape

Abstract

A zipper 3 (translator's comment: the zipper should be coded as 11 instead of 3) is stuck on the opening part 2 side of a packaging bag 1 and a heat-sealed part 12 is formed in the outer side from the zipper 3 (translator's comment: the zipper should be coded as 11 instead of 3) to seal the packaging bag 1. A band-shaped unsealing tape 3 is stuck, in parallel to the opening part 2, on one inner surface of the packaging bag 1 in an area between the zipper 3 (translator's comment: the zipper should be coded as 11 instead of 3) and the heat-sealed part 12. A cutout part 4 is formed on a surface opposite to the surface with the unsealing tape 3 stuck thereon at the end part of the unsealing tape 3. A pair of cut-in parts 5 are formed on the packaging bag 1 at the end part of the unsealing tape 3.

Description

TECHNICAL FIELD [0001] The present invention relates to a sealed bag with unsealing tape. More specifically this invention relates to a sealed bag with unsealing tape provided on the opening-part side of a packaging bag used for packaging foods, drugs or the like therein. BACKGROUND ART [0002] Conventionally, bags (chuck bags) enable to be easily opened and closed by forming a zipper (an engaging device), which includes a male member and a female member, in an opening-part thereof have been used in many fields such as foods, drugs, daily commodities, and the like. Even with the bag with a zipper as described above, it is desirable that the bag is kept in the completely sealed state until the time point of sales, and generally an end part there of is completely sealed along the zipper part. In a case of a bag with a zipper which is completely sealed, generally a section between the zipper and a seal part in the opening-part side of the bag is cut in, and then the bag is opened and re...

AI Technical Summary

Benefits of technology

[0011] A main object of the present invention is to provide a sealed bag with unsealing tape which can provide the excellent sealing performance before its use and also which can easily be cut in and unsealed manually.

Problems solved by technology

However, use of scissors is messy, and in addition, if scissors are not available, the bag can not be opened, which is disadvantageous.

When a bag is torn from the notch, the bag can not be cut in along a straight line, which is also disadvantageous.

S62-13838) However, each of the means described above has the problems as described below.

With the means 2, an inner surface side film with a perforated line formed thereon itself can be tone along a straight line, but when the inner surface side film is thermally fused and stuck to the base film, the perforations are filled with materials from the base film due to the thermal effect, which disadvantageously makes it difficult to tear the bag.

With the means 3, the sealing performance is insufficient, and in addition the process for forming a specific cutting-plane line is disadvantageously complicated.

Images