PE heavy-load film outer valve bag
By designing a double-layer bag body in the valve pocket and setting up staggered breathable components and anti-slip arrays, the problems of poor exhaust after loading, external air entering and sliding, achieving safe transportation and stable accumulation are achieved .
Patent Information
- Application Number
- CN202421182759.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-28
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-05-28
AI Technical Summary
The existing valve pockets cannot be effectively exhausted after loading, resulting in the possibility of explosive bags during transportation, and external air is difficult to avoid entering the bag body, and it is easy to slide off when piled up.
Design a PE heavy-duty membrane outer valve pocket, adopting a double-layer structure bag body, the outer bag and the inner bag are equipped with staggered breathable components, and an anti-slip array is set between the two breathable components of the outer bag, which is breathable. The components and the anti-slip array cooperate with each other to solve the problems of exhaust and anti-slip fall.
After filling powder, the gas inside the inner bag is discharged in a timely manner to prevent the bag explosion and at the same time avoid external air entering, which enhances the friction between the bags and prevents slipping.
Smart Images
Figure CN222433064U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of valve bags, in particular to a PE heavy-duty film outer valve bag. Background Art
[0002] Valve bags, commonly known as paste-bottom bags, are currently popular international packaging bags. They are fed from the top or bottom valve port and use special filling equipment. After filling the materials, they are packed into cubes. The bags are neatly stacked and beautiful. They are environmentally friendly bags. Valve bags are mainly used to package edible powder, chemical powder, fertilizer, synthetic materials, explosives, grain, salt, minerals and other powdered or granular solid materials and flexible items.
[0003] When using valve bags to fill powders, the existing valve bags cannot solve the exhaust problem after filling, avoid bag explosion during transportation, and cannot prevent external air from entering the bag. At the same time, the valve bags are prone to slipping when stacked after filling. Utility Model Content
[0004] The purpose of the utility model is to provide a PE heavy-duty film outer valve bag, which is provided with a bag body with a two-layer structure, wherein the outer bag and the inner bag are respectively provided with breathable components arranged in a staggered manner, and the outer bag is provided with an anti-slip array between the two breathable components. The breathable components and the anti-slip array cooperate with each other to solve the above-mentioned problems existing in the prior art.
[0005] In order to solve the above technical problems, the utility model adopts the following solutions:
[0006] A PE heavy-duty film outer valve bag comprises a bag body, wherein the bag body comprises an outer bag and an inner bag, a double-layer valve port is fixedly bonded to the top of the inner bag, the outer bag and the inner bag are both provided with mutually staggered breathable components, and an anti-slip array is provided on the surface of the outer bag, wherein the anti-slip array is located between the two breathable components of the outer bag.
[0007] In the present application, a double-layer bag body is provided, namely an outer bag and an inner bag, and staggered breathable components are provided in the outer bag and the inner bag, so that after the filling of the powder is completed, the gas inside the inner bag can be discharged from the inner bag and the outer bag in time to prevent the bag from bursting during subsequent packaging and transportation. At the same time, during the exhaust process, the external air can be prevented from entering the bag body. The anti-skid array is mainly located between the two breathable components of the outer bag, which is used to solve the problem of insufficient horizontal and vertical pulling force after stacking, so as to increase the friction between the stacked valve bags and avoid slipping.
[0008] Preferably, the outer bag comprises a first long side portion and a first short side portion, the breathable component is located at the first long side portion, and the anti-slip array is located at the first short side portion and two ends of the first long side portion.
[0009] Preferably, the inner bag comprises a second long side portion and a second short side portion, and the breathable component is located at the second short side portion.
[0010] Preferably, the breathable component comprises a plurality of mutually staggered unit holes, and the unit holes are composed of a plurality of breathable holes.
[0011] Preferably, the ventilation holes are punched from the inside of the inner bag or the outer bag to the outside, and the ventilation holes are trumpet-shaped. The diameter of the small hole end of the ventilation hole is 0.2-0.4 mm, and the diameter of the large hole end is 0.3-0.6 mm. The specific diameter size is set according to the actual situation.
[0012] Preferably, the anti-skid array is composed of a plurality of anti-skid protrusions, and the arrangement density of the anti-skid protrusions is greater than the arrangement density of the unit holes.
[0013] Preferably, the anti-slip protrusions are formed by pressing a mold through the inner wall of the outer bag toward the outer wall.
[0014] Preferably, the outer bag is made of PE material, and the inner bag is made of low-resistance material.
[0015] The utility model has the beneficial effects:
[0016] The bag body of the utility model has a double-layer structure, and a ventilation component is arranged on the second short side of the inner bag and the first long side of the outer bag. The smallest unit of the ventilation component is a trumpet-shaped ventilation hole. A plurality of ventilation holes constitute a unit hole. The unit holes are staggered with each other, so that the gas in the inner bag is exhausted in time with high exhaust efficiency, and at the same time, external air is prevented from entering the bag body.
[0017] The surface of the outer bag of the utility model is provided with an anti-skid array between two breathable components. The anti-skid array is composed of a plurality of anti-skid protrusions arranged with a density smaller than that of the unit holes, so as to increase the horizontal and vertical pulling forces between the outer bags when stacked and prevent them from slipping during transportation. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the structure of the utility model;
[0019] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;
[0020] Figure 3 It is a structural schematic diagram of the unit hole of the utility model.
[0021] Figure markings: 1-bag body, 10-outer bag, 100-first long side, 101-first short side, 11-inner bag, 110-second long side, 111-second short side, 2-valve mouth, 20-outer paper, 21-inner paper, 3-breathable component, 30-breathable hole, 31-unit hole, 4-anti-slip array, 40-anti-slip protrusion. DETAILED DESCRIPTION
[0022] The present invention will be further described in detail below in conjunction with the embodiments and drawings, but the implementation manner of the present invention is not limited thereto.
[0023] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inside", "outside", "front", "back", "top", "bottom", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.
[0024] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "open", "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0025] Example
[0026] An embodiment of the utility model is a PE heavy-duty film outer valve bag, comprising a bag body 1, wherein the bag body 1 comprises an outer bag 10 and an inner bag 11, a valve port 2 of a double-layer structure is fixedly bonded to the top of the inner bag 11, the outer bag 10 and the inner bag 11 are both provided with mutually staggered breathable components 3, the surface of the outer bag 10 is provided with an anti-slip array 4, and the anti-slip array 4 is located between the two breathable components 3 of the outer bag 10.
[0027] In this application, reference is made to Figures 1 to 3, a double-layer bag body 1 is provided, namely an outer bag 10 and an inner bag 11, and staggered ventilating components 3 are provided on the outer bag 10 and the inner bag 11, so that after the powder filling is completed, the gas inside the inner bag 11 is discharged from the inner bag 11 and the outer bag 10 in time, so as to prevent the bag from bursting during subsequent packaging and transportation. The staggered ventilating components 3 here refer to the staggered positions of the outer bag 10 and the inner bag ventilating components 3.
[0028] At the same time, during the exhaust process, the external air can be prevented from entering the bag body 1. The anti-slip array 4 is mainly located between the two breathable components 3 of the outer bag 10, and is used to solve the problem of insufficient horizontal and vertical pulling force after stacking, so as to increase the friction between the stacked valve mouth 2 bags to prevent slipping.
[0029] It should be noted that the top and bottom of the outer bag 10 are bent into a bag opening, and a valve opening 2 of a double-layer structure is fixedly bonded below the bag opening, which is convenient for expanding the bag opening during filling. The inner layer is made of CPP film and the outer layer is made of kraft paper, which is conducive to the fusion of the CPP film under heating conditions to achieve automatic packaging.
[0030] In some preferred embodiments, the outer bag 10 includes a first long side portion 100 and a first short side portion 101, the breathable component 3 is located at the first long side portion 100, and the anti-slip array 4 is located at the first short side portion 101 and both ends of the first long side portion 100. The inner bag 11 includes a second long side portion 110 and a second short side portion 111, and the breathable component 3 is located at the second short side portion 111.
[0031] Specifically, the first long side portion 100 and the second long side portion 110, the first short side portion 101 and the second short side portion 111 correspond to each other, and the first long side portion 100 is provided with a breathable component 3 and an anti-skid array 4, so that the valve port 2 bag after filling is stacked with the first long side portion 100 in contact with the ground. At this time, the anti-skid array 4 provided effectively increases the friction between another valve port 2 bag adjacent to it, thereby effectively preventing slipping. The breathable component 3 is mainly located in the second short side portion 111 on the same side in the inner bag 11, and is mainly located in the first long side portion 100 on the same side in the outer bag 10, so that the gas filled in the inner bag 11 passes through the breathable components 3 in the second short side portion 111 and the first long side portion 100 in turn. The breathable components 3 in the inner bag 11 and the outer bag 10 are arranged in an interlaced manner, which is conducive to the timely discharge of the internal gas and prevents the external air from entering the bag body 1.
[0032] In some preferred embodiments, the ventilation component 3 includes a plurality of mutually staggered unit holes 31, and the unit holes 31 are composed of a plurality of ventilation holes 30. The ventilation holes 30 are punched from the inside of the inner bag 11 or the outer bag 10 to the outside, and the ventilation holes 30 are trumpet-shaped.
[0033] Specifically, refer to Figure 3 The smallest unit of the ventilation component 3 is a ventilation hole 30, and a plurality of ventilation holes 30 form a unit hole 31. The plurality of unit holes 31 are arranged in a staggered manner so that the gas in the inner bag 11 can be discharged in time. At the same time, the ventilation holes 30 are punched from the inside of the inner bag 11 and the outer bag 10 to the outside to form a trumpet shape, that is, the aperture of the ventilation hole 30 close to the center of the bag body 1 is larger than the aperture of the outside, which is conducive to transmitting the gas in the inner bag and the outer bag 10 through the end with a large aperture to the end with a small aperture, thereby accelerating the exhaust rate. At the same time, it is difficult for external air to enter the outer bag 10 and the inner bag 11 through one end of the ventilation hole 30 with a small aperture, thereby effectively preventing the entry of air.
[0034] The aperture of the small hole end of the air vent 30 is 0.2-0.4 mm, and the aperture of the large hole end is 0.3-0.6 mm. The specific aperture size is set according to the actual situation.
[0035] In some preferred embodiments, the anti-skid array 4 is composed of a plurality of anti-skid protrusions 40, and the arrangement density of the anti-skid protrusions 40 is greater than the arrangement density of the unit holes 31. The anti-skid protrusions 40 are formed by pressing a mold through the inner wall of the outer bag 10 toward the outer wall. The outer bag 10 is made of PE material, and the inner bag 11 is made of low-resistance material.
[0036] Specifically, the anti-skid protrusions 40 are mainly obtained by pressing from the inner wall of the outer bag 10 to the outer wall using a pressing mold. Since the outer bag 10 is made of PE material, it will deform during the pressing process, thereby forming a convex object on the surface of the outer bag 10, which is the anti-skid protrusion 40. A specific value is set during the pressing process to avoid the anti-skid protrusions 40 from breaking during the pressing process. The arrangement density of the anti-skid protrusions 40 is greater than the arrangement density of the breathable component 3, that is, greater than the arrangement density between the multiple unit holes 31. At the same time, the anti-skid protrusions 40 are all arranged on the first long side 100 and the first short side 101 of the outer bag 10, which effectively enhances the horizontal and vertical tension after stacking, avoids slipping, and increases the anti-skid effect.
[0037] The inner bag 11 is made of low-resistance material, specifically nylon or other materials. When made of nylon, it has good wear resistance and moisture absorption, long service life, and flame retardant properties, which can effectively protect the powder inside and prevent moisture in the external air from affecting the powder inside.
[0038] When the utility model is used, the valve port 2 of the double-layer structure is connected to the discharge port of the filling machine, so that the powder enters the interior of the bag body 1 through the valve port 2. After the filling is completed, a certain amount of gas is generated in the bag body 1, and the gas is discharged to the outside of the bag body 1 through the air holes 30 of the second short side portion 111 and the air holes 30 of the first long side portion 100. At the same time, the outside of the valve port 2 is heated by a clamp, and the CPP film of the inner layer is sealed by high-temperature fusion to achieve automatic packaging; the anti-slip protrusions 40 provided on the outer bags 10 effectively increase the friction between the outer bags 10 when stacked, thereby avoiding slipping.
[0039] The above is only a preferred embodiment of the utility model and does not limit the utility model in any form. According to the technical essence of the utility model, within the spirit and principles of the utility model, any simple modification, equivalent replacement and improvement made to the above embodiment still falls within the protection scope of the technical solution of the utility model.
Claims
1. A PE heavy-duty outer valve bag, characterized in that: The invention comprises a bag body (1), wherein the bag body (1) comprises an outer bag (10) and an inner bag (11), a valve port (2) of a double-layer structure is fixedly bonded to the top of the inner bag (11), the outer bag (10) and the inner bag (11) are both provided with mutually staggered breathable components (3), the surface of the outer bag (10) is provided with an anti-slip array (4), and the anti-slip array (4) is located between the two breathable components (3) of the outer bag (10).
2. A PE heavy-duty film outer valve bag according to claim 1, characterized in that: The outer bag (10) comprises a first long side portion (100) and a first short side portion (101), the breathable component (3) is located on the first long side portion (100), and the anti-slip array (4) is located on the first short side portion (101) and at both ends of the first long side portion (100).
3. A PE heavy-duty film outer valve bag according to claim 1, characterized in that: The inner bag (11) comprises a second long side portion (110) and a second short side portion (111), and the breathable component (3) is located on the second short side portion (111).
4. A PE heavy-duty film outer valve bag according to claim 1, characterized in that: The ventilation component (3) comprises a plurality of mutually staggered unit holes (31), and the unit holes (31) are composed of a plurality of ventilation holes (30).
5. A PE heavy-duty film outer valve bag according to claim 4, characterized in that: The ventilation holes (30) are obtained by punching holes from the inside of the inner bag (11) or the outer bag (10) toward the outside, and the ventilation holes (30) are trumpet-shaped.
6. A PE heavy-duty film outer valve bag according to claim 4, characterized in that: The anti-skid array (4) is composed of a plurality of anti-skid protrusions (40), and the arrangement density of the anti-skid protrusions (40) is greater than the arrangement density of the unit holes (31).
7. A PE heavy-duty film outer valve bag according to claim 6, characterized in that: The anti-slip protrusion (40) is formed by pressing a mold through the inner wall of the outer bag (10) toward the outer wall.
8. A PE heavy-duty film outer valve bag according to claim 4, characterized in that: The outer bag (10) is made of PE material, and the inner bag (11) is made of low-resistance material.