Liquid packaging bag

Abstract

The utility model belongs to the technical field of packaging bags, and particularly relates to a liquid packaging bag which comprises two bag pieces and a bottom piece, the bottom piece is folded to form a folding piece contained between the two bag pieces, and first impressions are formed on the two sides of the two bag pieces and the two sides of the folding piece in a press fit mode. The folding pieces and the corresponding bag pieces are pressed to form second impressions, horizontal walls, arc-shaped walls and a bottom wall are formed at the upper ends of the second impressions, the two arc-shaped walls are symmetrically arranged at the two ends of the bottom wall, the arc-shaped walls are obliquely arranged upwards, the inner arc faces of the arc-shaped walls are arranged downwards, and the bottom wall is connected with the lower ends of the arc-shaped walls. The two ends of the horizontal wall are connected with the corresponding first imprint and the upper end of the arc-shaped wall respectively. The contact area of the two ends of the second imprint is increased through the horizontal wall, so that the two ends of the second imprint can bear enough pulling force, the problem of liquid leakage caused by breakage of the two ends of the second imprint is solved, upward supporting force is provided through the arrangement of the arc-shaped wall, the force downwards applied by liquid is counteracted, and the load of the horizontal wall can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of packing bag, especially relates to a liquid packing bag. BACKGROUND

[0002] Liquid packing bag is a kind of packing bag for packing liquid such as laundry detergent, and the existing liquid packing bag is mainly made of a plastic film, the plastic film is folded into two bag pieces and a bottom piece connecting the two bag pieces by folding line along the transverse direction, the bottom piece is folded along the folding line in the transverse direction and accommodated between the two bag pieces, and then the folded plastic film is heat-sealed by a heat-sealing machine to form a cavity for containing liquid. The corresponding bottom piece and bag piece are also pressed and formed into an arc-shaped imprint connecting the sealing edges of the two sides of the packing bag by the heat-sealing machine to ensure the stability of the bottom piece, but when the liquid in the cavity is too heavy or is pressed, the two ends of the arc-shaped imprint are easy to tear, resulting in liquid leakage. SUMMARY

[0003] The utility model aims at providing a liquid packing bag capable of solving the above problems.

[0004] To achieve the above object, the utility model embodiment provides a liquid packing bag, which comprises two bag pieces and a bottom piece, the bottom piece is formed by folding into a folding piece accommodated between the two bag pieces, and the two sides of the two bag pieces and the two sides of the folding piece are formed by pressing into first imprints;

[0005] The folding piece and the corresponding bag piece are formed by pressing into second imprints, the upper end of the second imprint is formed into a horizontal wall, an arc-shaped wall and a bottom wall, the two arc-shaped walls are symmetrically arranged at the two ends of the bottom wall, the arc-shaped wall is arranged upwardly inclined, and the inner arc surface thereof is arranged downwardly, the bottom wall is connected with the lower end of the arc-shaped wall, and the two ends of the horizontal wall are respectively connected with the corresponding first imprint and the upper end of the arc-shaped wall.

[0006] Optionally, the bottom wall is arranged in an arc shape, and the inner arc surface thereof is arranged upwardly.

[0007] Optionally, the length of the horizontal wall is 10-20mm.

[0008] Optionally, the upper end of the two bag pieces is formed by pressing into third imprints.

[0009] Compared with the prior art, the package bag structure has the beneficial effects that: the horizontal wall can increase the contact area of the two ends of the second pressure mark, so that the two ends can bear sufficient tension, the problem of liquid leakage caused by the rupture of the two ends of the second pressure mark due to the overloading or extrusion of the liquid in the bag can be prevented, the upward supporting force of the arc-shaped wall can offset the downward force of the liquid in the bag, so as to reduce the load of the horizontal wall, and the stability and service life of the package bag structure can be effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0011] Fig. 1 It is a front view of the present application.

[0012] Fig. 2 It is a side view of the present application without hot-pressing edge sealing.

[0013] In the drawings:

[0014] 100, bag piece;

[0015] 200, bottom piece; 210, folding piece;

[0016] 300, first pressure mark;

[0017] 400, second pressure mark; 410, horizontal wall; 420, arc-shaped wall; 430, bottom wall;

[0018] 500, third pressure mark. DETAILED DESCRIPTION

[0019] The embodiments of the present application will be described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the embodiments of the present application, and cannot be understood as a limitation of the present application.

[0020] In the description of the embodiments of the utility model, it is understood that if the embodiments of the utility model involve directional indications, for example, the directions or position relationships of up, down, left, right, front, back, inside and outside are based on the directions or position relationships shown in the drawings, which are only for the convenience of describing the embodiments of the utility model and simplifying the description, and do not indicate or imply that the indicated devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0021] In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0022] In the embodiments of the utility model, unless otherwise specifically defined and limited, if there are terms such as "installation", "connection", "connection", "fixing" and the like, they should be understood in a broad sense, for example, they can be fixedly connected, or they can be detachably connected, or they can be integrated. It can be a mechanical connection, or an electrical connection. It can be directly connected, or indirectly connected through an intermediate medium. It can be the communication or interaction relationship between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the embodiments of the utility model can be understood according to the specific circumstances.

[0023] As shown in Figs. 1-2 The utility model discloses an embodiment of a liquid packaging bag, which comprises two bag pieces 100 and a bottom piece 200.

[0024] Among them, the bottom piece 200 is formed with a folding piece 210 by folding, the folding piece 210 is accommodated between the two bag pieces 100, and the two sides of the two bag pieces 100 and the two sides of the folding piece 210 are formed with a first pressure mark 300 by pressing, so as to form a cavity for containing liquid.

[0025] The folding piece 210 and the corresponding bag piece 100 are formed with a second pressure mark 400 by pressing, the upper end of the second pressure mark 400 is formed with a horizontal wall 410, an arc-shaped wall 420 and a bottom wall 430, the two arc-shaped walls 420 are symmetrically arranged at the two ends of the bottom wall 430, the arc-shaped wall 420 is arranged upwardly inclined, and the inner arc surface of the arc-shaped wall 420 is arranged downwardly, the bottom wall 430 is connected with the lower end of the arc-shaped wall 420, the two ends of the horizontal wall 410 are respectively connected with the corresponding first pressure mark 300 and the upper end of the arc-shaped wall 420, and specifically, the length of the horizontal wall 410 is 10-20mm.

[0026] The horizontal wall 410 can increase the contact area of the two ends of the second pressing mark 400, so that the two ends can bear enough pulling force, and can prevent the liquid in the bag from being too heavy or being squeezed to cause the two ends of the second pressing mark 400 to break, thereby preventing the problem of liquid leakage. The arc-shaped wall 420 can provide upward supporting force to offset the downward force of the liquid in the bag, thereby reducing the load of the horizontal wall 410, and effectively improving the stability and service life of the packaging bag structure.

[0027] In an embodiment, the bottom wall 430 is arc-shaped, and the inner arc surface thereof faces upward to improve the stability of the structure.

[0028] In an embodiment, the upper ends of the two bag pieces 100 are heat-sealed to form a third pressing mark 500. It should be noted that, after the cavity is filled with liquid, the upper ends of the two bag pieces 100 are heat-sealed by a heat-sealing machine to form the third pressing mark 500, thereby completing the packaging.

[0029] The above is only a preferred embodiment of the present application, and is not intended to limit the present application. Any modification, equivalent replacement and improvement within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A liquid packaging bag, characterized in that, The bag comprises two bag pieces and a bottom piece, the bottom piece is formed by folding to have a folding piece containing the two bag pieces, the two sides of the two bag pieces and the two sides of the folding piece are formed by pressing to have first pressing marks; The folding piece and the corresponding bag piece are formed by pressing to have second pressing marks, the upper end of the second pressing marks is formed by a horizontal wall, two arc walls and a bottom wall, the two arc walls are symmetrically arranged at the two ends of the bottom wall, the arc walls are arranged upwardly and the inner arc surfaces of the arc walls are arranged downwardly, the bottom wall is connected with the lower ends of the arc walls, and the two ends of the horizontal wall are respectively connected with the corresponding first pressing marks and the upper ends of the arc walls.

2. The liquid packaging bag according to claim 1, wherein The bottom wall is arranged in an arc shape and the inner arc surface of the bottom wall is arranged upwardly.

3. The liquid packaging bag according to claim 1, wherein The length of the horizontal wall is 10-20 mm.

4. The liquid packaging bag according to claim 1, wherein The upper end of the two bag pieces is formed by pressing to have third pressing marks.

Images