Compression-resistant and leakage-proof liquid nozzle adding bag

Abstract

The utility model discloses a pressure-resistant and leakage-proof liquid nozzle adding bag which comprises a bag body (1) and is characterized in that the bag body (1) is formed by hot melting and pressing the edges of a front packaging film layer and a rear packaging film layer, and a liquid outlet nozzle (3) which is pressed between the two packaging film layers in a hot melting and sealing mode is arranged in the middle of the top end of the bag body (1). The packaging film is formed by compounding a PET layer (4), a nylon film layer (5), an aluminum foil layer (6), a nylon film layer (5) and a PE layer (7) which are sequentially arranged from outside to inside. The packaging film is arranged in the shape of an isosceles trapezoid with the small upper portion and the large lower portion, the hot-melting pressing width of the top edge of the packaging film is 10 mm, the hot-melting pressing width of the bottom edge of the packaging film is 16 mm, and the hot-melting pressing widths of the two side edges of the packaging film are gradually changed from 10 mm to 16 mm from top to bottom. According to the utility model, not only can the compression resistance be improved, but also the waterproof and anti-leakage performance is better, the internal liquid can be better used up, and the safety is higher.

Description

Technical Field

[0001] The utility model relates to the field of packaging bags, in particular to a pressure-resistant and leakage-proof liquid bag with a spout. Background Art

[0002] At present, common liquids such as laundry detergent and juice are packaged in plastic bottles or glass bottles, but the cost of such packaging is relatively high; therefore, more and more manufacturers on the market will choose to use packaging bags for packaging, which greatly reduces the packaging cost; since laundry detergent, juice, etc. cannot be completely used up at one time, the usage rate of liquid packaging bags with storage function is also gradually increasing; this type of liquid packaging bag is similar to the bag body disclosed in ZL201820654485.X, which is generally composed of a composite of an adhesive organic film and kraft paper distributed inside and outside, and a foldable seal connected by double-sided tape is set on the top. This type of liquid packaging bag has certain strength and anti-leakage performance, and has a storage sealing function; however, when this type of packaging bag is subjected to squeezing force, the sealing part is easily inflated, resulting in leakage of the internal liquid; and the bag body packaging film composed of kraft paper and organic film, after some parts of the outside are wetted, the strength and toughness of the kraft paper in this part will be reduced, and the strength of the internal organic film will be affected, which is prone to leakage problems.

[0003] Therefore, the existing liquid packaging bags have the problems of poor compression resistance and poor waterproof and anti-leakage performance. Utility Model Content

[0004] The purpose of the utility model is to provide a pressure-resistant and leakage-proof liquid bag with a spout. The utility model can not only improve the pressure resistance, but also has the advantages of good waterproof and leakage-proof performance.

[0005] The technical solution of the utility model is as follows: a pressure-resistant and leakage-proof liquid spout bag, comprising a bag body, wherein the bag body is formed by hot-melt pressing of the edges of two layers of packaging films at the front and rear, and a liquid outlet nozzle hot-melt sealed and pressed between the two layers of packaging films is arranged in the middle of the top of the bag body; the packaging film comprises a PET layer, a nylon film layer, an aluminum foil layer, a nylon film layer and a PE layer which are arranged in sequence from the outside to the inside; the packaging film is arranged in an isosceles trapezoidal shape which is small at the top and large at the bottom, the hot-melt pressing width of the top edge of the packaging film is 10 mm, the hot-melt pressing width of the bottom edge of the packaging film is 16 mm, and the hot-melt pressing width of both sides of the packaging film gradually changes from 10 mm to 16 mm from top to bottom.

[0006] In the aforementioned pressure-resistant and leakage-proof liquid spout bag, the four corners of the bag body are all rounded.

[0007] In the aforementioned pressure-resistant and leakage-proof liquid spout bag, the left and right ends of the bag body corresponding to the hot-melt pressing position of the bottom of the two layers of packaging film are both arc-shaped.

[0008] In the aforementioned pressure-resistant and leakage-proof liquid spout bag, the liquid outlet spout is provided with protrusions distributed in an annular shape at the hot-melt sealing pressing position, and the protrusions are in a grid shape.

[0009] In the aforementioned pressure-resistant and leakage-proof liquid spout bag, the protrusion has a protrusion height of 0.1 to 0.3 mm.

[0010] Compared with the prior art, the utility model forms a packaging film by compounding a PET layer, a nylon film layer, an aluminum foil layer, a nylon film layer and a PE layer in sequence from the outside to the inside, wherein the aluminum foil layer improves the tear resistance, the nylon film layers inside and outside the aluminum foil layer have good toughness, and the outermost PET layer and the innermost PE layer both have good waterproofness and anti-leakage properties; a bag body is formed by hot-melt pressing the edges of the two layers of packaging film, and the liquid outlet nozzle is simultaneously hot-melt sealed and pressed at the middle of the top of the bag body, and the liquid outlet nozzle is provided with a screw cap, and when the bag body is squeezed, the screw cap on the liquid outlet nozzle is difficult to be ejected, the overall strength and toughness of the packaging film are good, deformation and damage are not easy to occur, and the pressure resistance is good; at the same time, the packaging film constituting the bag body is in an isosceles trapezoidal shape with a small top and a large bottom, so that the internal liquid can better flow out from the liquid outlet nozzle, and the internal liquid can be better used up; the hot-melt pressing width of the packaging film gradually increases from top to bottom, so that the internal capacity is ensured while ensuring the compressive strength.

[0011] In addition, the four corners of the bag body in the utility model are all rounded, which can prevent sharp corners from scratching the user and is safer; the two sides of the bottom of the bag body are arc-shaped, and when the bag body is squeezed, the pressure on both sides of the bottom of the bag body can be better dispersed, thereby improving the compression resistance.

[0012] The grid-like protrusions distributed in an annular manner on the liquid outlet nozzle can improve the tightness of the connection and the strength of the part when hot-melt sealing and pressing with the packaging film, thereby avoiding the problem of easy leakage of the part after being pressed.

[0013] Therefore, the utility model can not only improve the pressure resistance, but also has the advantages of good waterproof and anti-leakage performance, better exhaustion of internal liquid and higher safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 It is a schematic diagram of the structure of the packaging film;

[0016] Figure 3 It is a schematic diagram of the structure of the liquid outlet nozzle.

[0017] The markings in the attached drawings are: 1-bag body, 3-liquid outlet, 4-PET layer, 5-nylon film layer, 6-aluminum foil layer, 7-PE layer, 8-protrusion. DETAILED DESCRIPTION

[0018] 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.

[0019] Embodiment. A pressure-resistant and leak-proof liquid spout bag, comprising: Figures 1 to 3 As shown, the bag body 1 includes a bag body 1, which is formed by hot-melt pressing the edges of two layers of packaging film at the front and back, and a liquid outlet nozzle 3 is provided in the middle of the top end of the bag body 1, which is hot-melt sealed and pressed between the two layers of packaging film; the packaging film includes a PET layer 4, a nylon film layer 5, an aluminum foil layer 6, a nylon film layer 5 and a PE layer 7 arranged in sequence from the outside to the inside; the packaging film is arranged in an isosceles trapezoidal shape that is small at the top and large at the bottom, the hot-melt pressing width of the top edge of the packaging film is 10mm, the hot-melt pressing width of the bottom edge of the packaging film is 16mm, and the hot-melt pressing width of both sides of the packaging film gradually changes from 10mm to 16mm from top to bottom.

[0020] The four corners of the bag body 1 are all rounded; the left and right ends of the bag body 1 corresponding to the hot-melt pressing position at the bottom of the two layers of packaging film are both arc-shaped; the liquid outlet nozzle 3 is provided with a ring-shaped protrusion 8 at the hot-melt sealing pressing position, and the protrusion 8 is in a grid shape; the protrusion height of the protrusion 8 is 0.1 to 0.3 mm.

[0021] Working principle: PET layer 4, nylon film layer 5, aluminum foil layer 6, nylon film layer 5 and PE layer 7 are compounded in sequence from outside to inside to form a packaging film; the edges of the two packaging films are then hot-melt pressed to form a bag body 1; and a liquid outlet nozzle 3 is hot-melt sealed and pressed at the middle of the top of the bag body 1. Since a ring-shaped protrusion 8 is provided at the position corresponding to the hot-melt sealing and pressing on the liquid outlet nozzle 3, the connection strength of this position is higher after hot-melt pressing, and the bag body 1 is not easily damaged and leaked after being compressed.

[0022] Since the aluminum foil layer 6 has good tear resistance, the nylon film layers 5 inside and outside the aluminum foil layer 6 have good toughness, the outermost PET layer 4 and the innermost PE layer 7 both have good waterproofness and leakage resistance, the overall strength and toughness of the bag body 1 are good; after the bag body 1 is subjected to pressure, the front and back of the bag body 1 are not easy to be damaged or broken, the screw cap screwed on the liquid outlet nozzle 3 at the top of the bag body 1 is not easy to be pushed out, the width of the hot-melt pressing at the edge of the bag body 1 which is small at the top and large at the bottom and is in the shape of an isosceles trapezoid increases from top to bottom, the hot-melt pressing part of the edge of the bag body 1 is not easy to be damaged, and the overall pressure resistance is good.

[0023] Since the bag body 1 is in the shape of an isosceles trapezoid with a small top and a large bottom, when in use, one only needs to unscrew the screw cap on the liquid outlet spout 3. After pouring the bag body 1, the liquid in the bag body 1 can flow out from the liquid outlet spout 3 in a better concentrated manner, thereby better using up the internal liquid; after use, one only needs to screw on the screw cap again to reseal the bag body 1; the four corners of the bag body 1 are all rounded, which can prevent sharp corners from scratching the user and has higher safety; both sides of the bottom of the bag body 1 are arc-shaped, and when the bag body 1 is squeezed, the pressure on both sides of the bottom of the bag body 1 can be better dispersed, thereby improving the pressure resistance.

Claims

1. A pressure-resistant and leak-proof liquid spout bag, comprising a bag body (1), characterized in that: The bag body (1) is formed by hot-melt-pressing the edges of two layers of packaging film at the front and rear, and a liquid outlet nozzle (3) is provided at the middle of the top end of the bag body (1) and is hot-melt-sealed and pressed between the two layers of packaging film; the packaging film comprises a PET layer (4), a nylon film layer (5), an aluminum foil layer (6), a nylon film layer (5) and a PE layer (7) arranged in sequence from the outside to the inside; the packaging film is arranged in an isosceles trapezoidal shape that is smaller at the top and larger at the bottom, the hot-melt-pressing width of the top edge of the packaging film is 10 mm, the hot-melt-pressing width of the bottom edge of the packaging film is 16 mm, and the hot-melt-pressing width of both sides of the packaging film gradually changes from 10 mm to 16 mm from top to bottom.

2. A pressure-resistant and leak-proof liquid spout bag according to claim 1, characterized in that: The four corners of the bag body (1) are all rounded.

3. The pressure-resistant and leak-proof liquid spout bag according to claim 1, characterized in that: The left and right ends of the bag body (1) corresponding to the hot-melt pressing position at the bottom of the two layers of packaging film are both in an arc shape.

4. The pressure-resistant and leak-proof liquid spout bag according to claim 1, characterized in that: The liquid outlet nozzle (3) is provided with protrusions (8) distributed in a ring shape at the hot melt sealing pressing position, and the protrusions (8) are in a grid shape.

5. The pressure-resistant and leak-proof liquid spout bag according to claim 4, characterized in that: The protrusion (8) has a protrusion height of 0.1 to 0.3 mm.

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