Liquid packaging bag capable of being sealed repeatedly

Abstract

The utility model discloses a liquid packaging bag capable of being sealed repeatedly, which comprises a rectangular bag body (1), and a self-standing bag bottom is arranged at the bottom of the bag body (1). The packaging bag is characterized in that notches (3) are formed in the top edge and the side edge of the vertex angle of one side of the bag body (1), and a protrusion (4) is formed in the position, corresponding to the vertex angle between the two notches (3), of the bag body (1); cutting indication lines (5) stretching across the protrusions (4) are printed at the same positions, corresponding to the two side faces of the protrusions (4), of the bag body (1), a pressure-sensitive adhesive layer (6) is bonded to the position, corresponding to the lower portions of the cutting indication lines (5), of one side face of each protrusion (4), and an isolation film (7) is bonded to the pressure-sensitive adhesive layer (6). The sealing device not only can be used for sealing repeatedly, but also has the advantages of being low in production cost and convenient to use.

Description

Technical Field

[0001] The utility model relates to the field of packaging bags, in particular to a resealable liquid packaging bag. Background Art

[0002] In the field of liquid packaging, plastic bottles are often used for packaging, resulting in high packaging costs. With the development of the packaging industry, more and more companies have begun to use plastic packaging bags with heat-pressed edges for liquid packaging, which greatly reduces packaging costs; however, after the liquid outlet is cut out, this type of liquid packaging bag cannot be sealed again. If the liquid in the liquid packaging bag cannot be used up at one time, it will cause waste; considering this problem, a liquid spout bag has appeared on the market. This type of bag is similar to a stand-up liquid packaging bag disclosed in ZL201620621705.X. The screw cap at the spout can be reopened after opening, which can better reseal the unused liquid, making this type of liquid packaging field gradually more widely used. However, in this type of liquid packaging bag with a spout, the addition of the spout also increases the overall production cost of the packaging bag.

[0003] Therefore, existing liquid packaging bags have the problems of being unable to be resealed and having high production costs. Utility Model Content

[0004] The purpose of the utility model is to provide a resealable liquid packaging bag. The utility model is not only resealable, but also has the advantage of low production cost.

[0005] The technical solution of the utility model is as follows: a resealable liquid packaging bag, comprising a rectangular bag body, a self-standing bag bottom being arranged at the bottom of the bag body; notches are arranged on the top edge and the side edge at the top corner of one side of the bag body, and a bulge is formed on the bag body corresponding to the top corner between the two notches; cutting indication lines crossing the bulge are printed at the same position on both side surfaces of the bag body corresponding to the bulge, a pressure-sensitive adhesive layer is bonded at the position below the cutting indication line on one side surface of the bulge, and an isolation film is adhered to the pressure-sensitive adhesive layer.

[0006] In the aforementioned resealable liquid packaging bag, the isolation film is provided with a slider protruding out of the pressure-sensitive adhesive layer.

[0007] In the aforementioned resealable liquid packaging bag, a gap is provided between the top of the pressure-sensitive adhesive layer and the cutting indicator line.

[0008] In the aforementioned resealable liquid packaging bag, the four corners of the bag body are all rounded.

[0009] In the aforementioned resealable liquid packaging bag, the edge of the notch is rounded.

[0010] In the aforementioned resealable liquid packaging bag, a hanging hole is provided in the middle of the top end of the bag body.

[0011] Compared with the prior art, the utility model provides notches on the top edge and side edges of a certain top corner of the bag body, so that a protrusion is formed at the top corner; cutting indicator lines are printed on both side surfaces of the protrusion, and a pressure-sensitive adhesive layer with an isolation film is bonded to one side surface of the protrusion; when the user cuts the protrusion according to the cutting indicator lines, an opening appears on the protrusion, and the liquid inside the bag body can be poured out from the opening; after the isolation film is torn off, the pressure-sensitive adhesive layer on the protrusion can be folded in half and bonded to the protrusion, so that the opening on the protrusion can be re-sealed; there is no need to adopt a spout structure, and the opening can be repeatedly sealed, thereby reducing the production cost.

[0012] In addition, the pull head protruding from the pressure-sensitive adhesive layer on the isolation film of the utility model can make it easier for users to tear off the isolation film, which is more convenient for users; the interval between the pressure-sensitive adhesive layer and the cutting indicator line can cause a warp when the pressure-sensitive adhesive layer is folded and bonded, which is convenient for users to tear off the pressure-sensitive adhesive layer by warping, thereby reopening the opening on the protrusion.

[0013] The four corners of the bag body are all rounded, and the edges of the notch are also rounded to avoid sharp top edges scratching users, thereby improving safety in use; the hanging hole at the top of the bag body can be used for hanging when selling or when the liquid inside the bag is not enough to support the bottom of the self-supporting bag, which is more convenient to use.

[0014] Therefore, the utility model can not only be repeatedly sealed, but also has the advantages of low production cost and convenient use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of the structure of the utility model when the isolation film is torn off;

[0017] Figure 3 It is a structural schematic diagram of the utility model when it is resealed.

[0018] The markings in the attached drawings are: 1-bag body, 3-notch, 4-protrusion, 5-cutting indicator line, 6-pressure-sensitive adhesive layer, 7-isolating film, 8-pull head, 9-hanging hole. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0020] Embodiment. A resealable liquid packaging bag, comprising: Figures 1 to 3As shown, it includes a rectangular bag body 1, and a self-standing bag bottom is arranged at the bottom of the bag body 1; notches 3 are arranged on the top edge and side edges at the top corner of one side of the bag body 1, and a protrusion 4 is formed on the bag body 1 corresponding to the top corner between the two notches 3; cutting indication lines 5 crossing the protrusion 4 are printed at the same position on both sides of the bag body 1 corresponding to the protrusion 4, and a pressure-sensitive adhesive layer 6 is bonded to the position below the cutting indication line 5 on one side of the protrusion 4, and an isolation film 7 is adhered to the pressure-sensitive adhesive layer 6.

[0021] The isolation film 7 is provided with a slider 8 protruding from the pressure-sensitive adhesive layer 6; a gap is provided between the top of the pressure-sensitive adhesive layer 6 and the cutting indicator line 5; the four corners of the bag body 1 are all rounded; the edge of the notch 3 is rounded; a hanging hole 9 is provided in the middle of the top of the bag body 1.

[0022] Working principle: the user cuts off the top of the protrusion 4 between the two notches 3 according to the cutting indicator line 5, so that an opening connected to the inside of the bag body 1 appears at the top of the protrusion 4; then, the bag body 1 is tilted toward the opening of the protrusion 4 to pour out the liquid in the bag body 1.

[0023] When the opening on the protrusion 4 needs to be resealed, the isolation film 7 is only torn off from the pressure-sensitive adhesive layer 6 by the pull head 8, and then the pressure-sensitive adhesive layer 6 on the protrusion 4 is folded in half, so that the pressure-sensitive adhesive layer 6 adheres to the protrusion 4 or the surface of the bag body 1, and the opening on the protrusion 4 is folded and sealed. When the opening on the protrusion 4 needs to be reopened, due to the interval between the pressure-sensitive adhesive layer 6 and the cutting indicator line 5, when the pressure-sensitive adhesive layer 6 is folded, there can be a section of the top of the pressure-sensitive adhesive layer 6 that cannot be bonded, and the user can tear the pressure-sensitive adhesive layer 6 more conveniently through the warping to reopen the opening on the protrusion 4.

[0024] The four corners of the bag body 1 are all rounded, and the edge of the notch 3 is also rounded, which can prevent sharp corners from scratching the user and improve safety.

[0025] The user can choose to place the bag body 1 independently through the self-supporting bag bottom or to hang the bag body 1 through the hanging hole 9 in the middle of the top of the bag body 1 according to his own needs.

Claims

1. A resealable liquid packaging bag, comprising a rectangular bag body (1), wherein a self-supporting bag bottom is arranged at the bottom of the bag body (1); characterized in that: Notches (3) are provided on the top edge and the side edge at the top corner of one side of the bag body (1); a protrusion (4) is formed at the top corner between the two notches (3) of the bag body (1); a cutting indication line (5) spanning the protrusion (4) is printed at the same position on both sides of the bag body (1) corresponding to the protrusion (4); a pressure-sensitive adhesive layer (6) is bonded at a position below the cutting indication line (5) on one side of the protrusion (4); and an isolation film (7) is bonded to the pressure-sensitive adhesive layer (6).

2. A resealable liquid packaging bag according to claim 1, characterized in that: The isolation film (7) is provided with a pull head (8) protruding out of the pressure-sensitive adhesive layer (6).

3. The resealable liquid packaging bag according to claim 1, characterized in that: A gap is provided between the top of the pressure-sensitive adhesive layer (6) and the cutting indicator line (5).

4. The resealable liquid packaging bag according to claim 1, characterized in that: The four corners of the bag body (1) are all rounded.

5. The resealable liquid packaging bag according to claim 1, characterized in that: The edge of the notch (3) is rounded.

6. The resealable liquid packaging bag according to claim 1, characterized in that: A hanging hole (9) is provided in the middle of the top end of the bag body (1).

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