JP3048317U - Powder packaging paper bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent breakage of both right and left corners by preventing the filled powder from entering into each of the right and left corners of a sealed bottom portion and a sealed mouth of a bag body, and to store powder contained therein. To provide a powder packaging paper bag that allows the body to be taken out neatly. SOLUTION: A heating adhesive portion inclined at approximately 45 ° is provided at each of right and left ends of a sealing bottom portion and an opening portion of a bag body provided with a polyethylene layer on an inner side, and triangular flat portions are provided at both left and right corners. Formed.

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 storing and packing powders such as cement and meriken powder.

[0002]

2. Description of the Related Art A conventional powder wrapping paper bag of this kind is provided with a linear heating adhesive portion 23 at a position near the bottom of a polyethylene layer 22 provided inside a bag body 21, and then an end of the bag body 21. The paper tape 24 is brought into contact with and adhered to the portion, or the portion is closed by a sewing machine 25. Therefore, when the powders are filled, the contents enter into the right and left corners of the bag main body 21, so that protruding portions 26 and 27 are formed at both right and left ends as shown in FIG. There were problems such as easy contact and breakage.

[0003]

[Problems to be Solved by the Invention] The present invention is intended to solve the above-mentioned conventional problems, and it is an object of the invention to provide a paper bag for packing powders which is not likely to be damaged during transportation.

[0004]

The means of the present invention has the following two points. (1) A multilayer paper bag provided with a polyethylene layer on the inside, and heating adhesive portions inclined at approximately 45 ° are provided opposite to both left and right ends of a linear heating adhesive portion provided on the closed bottom of the bag body. thing. (2) At the right and left ends of the opening of the bag body, heat bonding sections inclined at approximately 45 ° are provided facing each other, and after filling with powders, the adjacent positions of the opening edges are heated and bonded in parallel. The mouth was closed.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the drawings, reference numeral 1 denotes a bag body formed in multiple layers, and a polyethylene layer 2 is provided inside. The polyethylene layer 2 may be formed by laminating polyethylene on the inner surface of the inner bag 1a, or may be provided by polymerizing a polyethylene thin sheet (see FIG. 2). Reference numeral 3 denotes a linear heating bonding portion provided near the bottom edge of the bag body 1, and linear heating bonding portions 4 and 5 inclined at approximately 45 ° are provided at both left and right ends thereof. Then, triangular flat portions 6 and 7 are formed. Then, a paper tape 8 is brought into contact with the bottom of the bag body 1, and sewing 9 is performed with a sewing machine to close the bottom (see FIGS. 1 and 2).

At the left and right ends of the opening of the bag body 1, linear heating adhesive portions 10 and 11, which are inclined at approximately 45 ° similarly to the bottom, are provided, and triangular flat portions 12 are provided at both left and right corners of the opening. , 13 are formed. Then, after filling the powders, the heat bonding 14 is applied in a straight line as shown by a two-dot chain line in FIG. Thereafter, although not shown in the drawing, a paper tape is abutted in the same manner as the bottom portion, and a sewing machine is sewn to close the opening.

[0007]

According to the present invention, when the bag body is filled with powders, there are triangular flat portions at both the bottom and left and right corners of the mouth of the bag body, as shown in FIG. The powders do not enter the left and right corners, so that the left and right corners can be reliably prevented from being damaged. When the powders contained in the bag are taken out, they can be taken out cleanly without remaining inside the bag body, so that waste is reduced and economical. Further, since no powder remains in the bag body, the bag can be easily reused.

[Brief description of the drawings]

FIG. 1 is a front view of a state in which a central portion of a bag body is cut away.

FIG. 2 is an enlarged longitudinal side view showing the bottom of the bag body.

FIG. 3 is a partial front view showing a state in which the bag body is filled with powders.

FIG. 4 is a partial front view showing a conventional example in a state of being filled with powders.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bag main body 2 Polyethylene layer 3 Linear heating bonding part 4, 5 Linear heating bonding part 6, 7 Triangular flat part 8 Paper tape 9 Sewing machine sewing 10, 11 Linear heating bonding part 12, 13 Triangular heating bonding Flat part 14 Straight heat bonding

Claims (2)

[Utility model registration claims] 1. A multilayer paper bag provided with a polyethylene layer on the inner side thereof, wherein heating adhesive portions inclined at approximately 45 ° are opposed to left and right ends of a linear heating adhesive portion provided on a closed bottom of the bag body. A powder packaging paper bag characterized by being provided. 2. A heating and bonding portion inclined at an angle of approximately 45 ° is provided on both left and right ends of an opening of the bag body so as to face each other. 2. The powder packaging paper bag according to claim 1, wherein the mouth is closed.