JP3042483U - Sealing device for mouth of powder packaging paper bag - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: To obtain a powder packaging paper bag capable of reliably sealing without leakage of powder during transportation. SOLUTION: At the mouth of a multi-layered paper bag consisting of an inner bag and an outer bag, the rear upper end and the front upper end of the outer bag are cut off in a staggered manner to form a step, and the rear upper end of the outer bag is Bend the upper end of the inner layer bag downward from the front upper end of the outer layer bag, and fold the tip upward from the middle of the bent portion, and then fold and stack the rear upper end of the outer layer bag. A piece of decorative paper covered and glued.

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper bag for packaging powder such as Meriken powder, and more particularly to a mouth sealing device for a powder packaging paper bag.

[0002]

2. Description of the Related Art A conventional paper bag of this type is one in which the entire mouth of a bag body with left and right gusset folds is folded to one side, and a decorative paper attached with a cutting string is adhesively sealed on it. However, there was a drawback that the powder was not reliably sealed and the powder leaked during the transportation.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a powder packaging paper bag capable of completely sealing the mouth without powder leakage during transportation or the like.

[0004]

Means for Solving the Invention The means of the present invention are as follows. At the mouth of a multi-layer paper bag consisting of an inner layer bag and an outer layer bag, the rear upper edge and the front upper edge of the outer layer bag are cut off in a staggered manner to form a step, leaving the rear upper edge of the outer layer bag Bend the upper end downward from the front upper end of the outer bag, and fold the tip further upward from the middle of the bent portion, and then fold the rear upper end of the outer bag above the folded portion to polymerize. After that, the decorative paper attached with the cutting string was covered and adhered.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION In the drawings, reference numeral 1 denotes a multi-layered paper bag, which is provided with gusset folds 1a and 1b on the left and right, and the mouth portion of the outer bag 1B is different from that of the inner bag 1A as shown in FIG. A cut-off step 1c is formed on the rear upper end, a deeper cut-off step 1d is provided on the front upper end of the outer bag 1B, and the inner bag 1A is deeply cut off on the front upper end leaving the rear upper end of the outer bag 1B. As shown in FIGS. 4 and 5, the step portion 1d is bent downward to the front side to form a bent portion 2, and the tip of the bent portion 2 is folded back upward from the middle of the bent portion 2 to form a folded overlap portion. 3 is formed. Then, as shown in FIGS. 6 and 7, the rear upper end of the outer bag 1B is covered on the outside of the bent portion 2 and the folded overlapped portion 3, and then the decorative paper 5 with the cutting string 4 is adhered. Then, the cutting string 4 is fitted to the tip of the outer layer bag 1B, and the mouth is surely sealed. Further, at the time of opening, the decorative paper 5 can be easily opened by pulling the cutting string 4 and cutting the decorative paper 5. Although not shown in the figure, a polyethylene thin film layer may be interposed between the inner bag and the outer bag.

[0006]

According to the present invention, the mouth portion of the bag can be reliably sealed, and there is no risk of leakage of the powder contained during transportation. It is also very easy to open the mouth during use.

[Brief description of the drawings]

FIG. 1 is a partial front view showing a mouth portion of a paper bag.

2 is a partially enlarged cross-sectional view taken along the line AA of FIG.

FIG. 3 is a partially enlarged cross-sectional view taken along the line BB of FIG.

FIG. 4 is a front view showing a state in which the mouth portion of the inner layer bag is bent.

5 is an enlarged sectional view taken along the line CC of FIG.

FIG. 6 is a front view showing a state in which a rear upper end portion of an outer layer bag is bent forward and then a decorative paper is attached with an adhesive to seal a mouth portion.

7 is an enlarged cross-sectional view taken along the line DD of FIG.

FIG. 8 is a perspective view of a part of the decorative paper.

[Explanation of symbols]

 1 Multi-layer paper bag 1A Inner layer bag 1B Outer layer bag 1a Gazette folding part 1b Gazette folding part 1c Cut-off step part 1d Deep cut-off step part 2 Folding part 3 Folding overlap part 4 Cutting string 5 Decorative paper

Claims (1)

[Utility model registration claims] 1. At the mouth of a multi-layer paper bag consisting of an inner bag and an outer bag, the rear upper end and the front upper end of the outer bag are cut off in a staggered manner to form a step, and the rear upper end of the outer bag is Bend the upper end of the inner bag downward from the front upper end of the outer bag, and fold the tip further upward from the middle of the bent portion, and fold the rear upper end of the outer bag above the folded portion. A mouth-sealing device for a powder-wrapping paper bag, characterized in that a decorative paper having a cutting string attached thereto is covered and adhered thereto.