Kraft paper bag with anti-cracking bottom

Abstract

The utility model relates to the technical field of paper bags, in particular to a kraft paper bag with an anti-cracking bottom, which comprises a bag body, a bag bottom and a fixing component, the bag body is made of coated kraft paper, the bag bottom comprises an upper bottom surface, a lower bottom surface and a reinforcing rib, the reinforcing rib is made of silica gel, one side of the reinforcing rib is adhered to the top of the lower bottom surface, and the other side of the reinforcing rib is adhered to the bottom of the bag body. The upper bottom face is arranged at the tops of the reinforcing ribs, the bottom of the upper bottom face is bonded with the reinforcing ribs and the lower bottom face, the face, away from the reinforcing ribs, of the lower bottom face is bonded with the inner surface of the bag body, and the fixing assembly is arranged on the bag body and used for fixing the bag bottom. The kraft paper bag is provided with the bag bottom composed of the double-layer kraft paper and the reinforcing ribs, has high strength, and can reduce the possibility of cracking of the bottom of the kraft paper bag.

Description

Technical Field

[0001] This application relates to the technical field of air conditioners, and particularly to a kraft paper bag with anti-cracking bottom. Background Art

[0002] Kraft paper is often used as a packaging material, with very high strength and usually in a yellowish-brown color. Semi-bleached or fully-bleached kraft pulp is light brown, cream-colored or white. Kraft paper has very high tear resistance, bursting work and dynamic strength. It is mostly in roll form, and there are also flat papers. It is made from sulfate softwood pulp as raw material, through beating and then manufactured on a fourdrinier paper machine. Kraft paper bags have the characteristics of being strong, durable and beautiful.

[0003] At present, a Chinese utility model patent application with a publication date of February 01, 2022 and a publication number of CN215708412U provides an environmentally friendly self-standing kraft paper bag, including a bag body with a cavity and a sealing device arranged on the bag body. The sealing device includes an upper sealing member and a lower sealing member; the lower sealing member includes a circular pipe connecting the inside and outside of the bag body; a sealing convex ring is arranged on the outer peripheral surface of the pipe; an annular groove is arranged on the sealing convex ring; the annular groove is in sealing cooperation with the bag body, so as to install the pipe on the bag body; one end of the pipe is detachably inserted with a sealing plug, and the sealing plug can play a sealing role, and the sealing plug is located outside the bag body; the other end of the pipe is provided with a sealing film, and the sealing film is located inside the bag body to seal the inside of the pipe. A tearing dotted line is arranged on the sealing film, and the tearing dotted line is convenient for tearing, so as to destroy the sealing effect of the sealing film. This utility model has the beneficial effects of being degradable, environmentally friendly and reusable.

[0004] In a related-art environmentally friendly self-standing kraft paper bag, when the kraft paper bag is in use, the bottom of the bag often has to bear most of the weight of the contents, and the bottom of the bag is also often collided by the contents and external objects of the bag body. The bottom of the bag is more likely to crack than other parts of the paper bag. Utility Model Content

[0005] The embodiments of this application provide a kraft paper bag with anti-cracking bottom, which can improve the technical problem of easy cracking of the bag bottom existing in the related art.

[0006] The embodiments of this application provide a kraft paper bag with anti-cracking bottom, including a bag body, a bag bottom and a fixing component. The bag body is made of laminated kraft paper. The bag bottom includes an upper bottom surface, a lower bottom surface and a reinforcing rib. The reinforcing rib is made of silica gel. One side of the reinforcing rib is adhered to the top of the lower bottom surface. The upper bottom surface is arranged on the top of the reinforcing rib. The bottom of the upper bottom surface is bonded to the reinforcing rib and the lower bottom surface. The side of the lower bottom surface away from the reinforcing rib is bonded to the inner surface of the bag body. The fixing component is arranged on the bag body and is used to fix the bag bottom.

[0007] In the embodiments of the present application, the above technical solutions have at least the following technical effects: The reinforcing rib made of silica gel has good tensile resistance and can withstand a large tensile force without breaking. When a heavy object is placed inside the paper bag, the reinforcing rib can share a large part of the pressure for the upper bottom surface and the lower bottom surface with relatively low tensile strength, and prevent the bottom of the bag from cracking due to excessive deformation. The bag body made of laminated kraft paper has good moisture-proof performance and can protect the contents that are vulnerable to the humid environment.

[0008] A kraft paper bag with anti-cracking bottom provided in the embodiments of the present application is provided with a bag bottom composed of double-layer kraft paper and a reinforcing rib, which has high strength and can reduce the possibility of cracking at the bottom of the kraft paper bag.

[0009] In some embodiments, the fixing component includes a first fixing ring, a second fixing ring and a connecting shaft. The connecting shaft passes through the bag body, the upper bottom surface, the lower bottom surface and the reinforcing rib. The first fixing ring is arranged at one end of the connecting shaft inside the bag body. A through hole is provided on the second fixing ring, and one end of the connecting shaft away from the first fixing ring passes through the through hole and is bonded to the second fixing ring.

[0010] In some embodiments, the fixing component further includes a first rubber pad and a second rubber pad. Both the first rubber pad and the second rubber pad are sleeved on the connecting shaft. One side of the first rubber pad abuts against the first fixing ring, and the other side of the first rubber pad abuts against the bag body. One side of the second rubber pad abuts against the second fixing ring, and the other side of the second rubber pad abuts against the bag body.

[0011] In some embodiments, a plurality of threading holes are provided on the bag body, and a hand rope is further arranged on the bag body. The hand rope passes through the threading holes and is slidably connected to the bag body. Limit balls are sleeved at both ends of the hand rope.

[0012] In some embodiments, a plurality of threading rings are provided on the bag body. The threading rings are bonded to the bag body. The hand rope passes through the threading rings and is slidably connected to the threading rings.

[0013] In some embodiments, the top of the bag body is folded towards the inside of the bag body, and a support strip is arranged on the inner surface of the bag body. The support strip is located between the bag body and the folded edge of the bag body and is bonded to the bag body.

[0014] In some embodiments, a lining is further arranged on the inner surface of the bag body. The lining is bonded to the inner surface of the bag body. Description of the Drawings

[0015] To more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0016] Figure 1 It is a schematic diagram of the overall structure of a kraft paper bag with anti-cracking at the bottom provided by the embodiment of the present application;

[0017] Figure 2 For Figure 1 Enlarged view of part A;

[0018] Figure 3 It is a cross-sectional view of a kraft paper bag with anti-cracking at the bottom provided by the embodiment of the present application;

[0019] Figure 4 For Figure 3 Enlarged view of part A;

[0020] Figure 5 For Figure 3 Enlarged view of part B;

[0021] Figure 6 It is an exploded structural diagram of the fixing component.

[0022] Among them, the reference numerals in the figures:

[0023] 1. Bag body; 11. Threading hole; 12. Pull string; 121. Limit ball; 13. Threading ring; 14. Support strip; 15. Inner lining; 2. Bag bottom; 21. Upper bottom surface; 22. Lower bottom surface; 23. Reinforcing rib; 31. First fixing ring; 32. Second fixing ring; 321. Through hole; 33. Connecting shaft; 34. First rubber pad; 35. Second rubber pad. Specific embodiments

[0024] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer and more understandable, the following further elaborates on the present application in combination with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present application belongs; the terms used herein are only for the purpose of describing specific embodiments and do not limit the present application. The terms "including" and "having" and any variations thereof in the specification and claims of the present application and the above accompanying drawing descriptions are intended to cover non-exclusive inclusion.

[0026] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0027] It should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.

[0028] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined.

[0029] In the present application, "and / or" is merely an associative relationship describing associated objects, indicating that three relationships may exist; for example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this text generally represents an "or" relationship between the associated objects before and after.

[0030] It should be noted that in the present application, words such as "in some embodiments", "exemplarily", "for example", etc. are used to give examples, illustrations or explanations. Any embodiment or design described as "in some embodiments", "exemplarily", "for example" in the present application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Precisely, using words such as "in some embodiments", "exemplarily", "for example" is intended to present relevant concepts in a specific manner, meaning that the specific features, structures or characteristics described in combination with the embodiments may be included in at least one embodiment of the present application. The appearance of the above words at various positions in the specification does not necessarily refer to the same embodiment, nor are they independent or alternative embodiments mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0031] Kraft paper is often used as a packaging material. It has very high strength and is usually yellowish-brown. Semi-bleached or fully bleached kraft paper pulp is light brown, creamy or white. Kraft paper has very high tear resistance, bursting work and dynamic strength. It is mostly in roll form, and there are also flat sheets. It is made from sulfate softwood pulp as raw material, through beating, and is made on a Fourdrinier paper machine. Kraft paper bags are strong, durable and beautiful.

[0032] An environment-friendly self-standing kraft paper bag in the related art, with the publication number CN215708412U, includes a bag body with a cavity and a sealing device arranged on the bag body. The sealing device includes an upper seal and a lower seal; the lower seal includes a circular pipe connecting the inside and outside of the bag body; a sealing convex ring is arranged on the outer peripheral surface of the pipe; an annular groove is arranged on the sealing convex ring; the annular groove is in sealing cooperation with the bag body, so as to install the pipe on the bag body; one end of the pipe is detachably inserted with a sealing plug, and the sealing plug can play a sealing role, and the sealing plug is located outside the bag body; the other end of the pipe is provided with a sealing film, and the sealing film is located inside the bag body to seal the inside of the pipe. A tearing dotted line is arranged on the sealing film, and the tearing dotted line is convenient for tearing, so as to destroy the sealing effect of the sealing film. This utility model has the beneficial effects of being degradable, environmentally friendly and reusable.

[0033] However, for an environment-friendly self-standing kraft paper bag in the related art, when the kraft paper bag is in use, the bottom of the bag often has to bear most of the weight of the contents, and the bottom of the bag is also often subject to collisions and frictions from the contents and external objects of the bag body. The bottom of the bag is more likely to be damaged and torn than other parts of the paper bag.

[0034] Based on this, in order to improve the problem that the bottom of the bag in the related art is prone to cracking, the embodiments of the present application provide the following solutions.

[0035] Please refer to Figures 1 to 6 , the embodiments of the present application provide a bottom anti-cracking kraft paper bag. The bottom anti-cracking kraft paper bag includes a bag body 1, a bag bottom 2 and a fixing component, and the fixing component is used to fix the bag bottom 2.

[0036] Please refer to Figures 1 to 6, the bag body 1 is made of laminated kraft paper. The top of the bag body 1 is folded inward. A support strip 14 is provided on the inner surface of the bag body 1. The support strip 14 is located between the bag body 1 and the folded edge of the bag body 1 and is bonded to the bag body 1. The bag bottom 2 includes an upper bottom surface 21, a lower bottom surface 22, and a reinforcing rib 23. The reinforcing rib 23 is made of silicone material. One side of the reinforcing rib 23 is pasted on the top of the lower bottom surface 22. The upper bottom surface 21 is provided on the top of the reinforcing rib 23. The bottom of the upper bottom surface 21 is bonded to the reinforcing rib 23 and the lower bottom surface 22. The side of the lower bottom surface 22 away from the reinforcing rib 23 is bonded to the inner surface of the bag body 1. The fixing assembly includes a first fixing ring 31, a second fixing ring 32, a connecting shaft 33, a first rubber pad 34, and a second rubber pad 35. The connecting shaft 33 passes through the bag body 1, the upper bottom surface 21, the lower bottom surface 22, and the reinforcing rib 23. The first fixing ring 31 is provided at one end of the connecting shaft 33 inside the bag body 1. A through hole 321 is provided on the second fixing ring 32. One end of the connecting shaft 33 away from the first fixing ring 31 passes through the through hole 321 and is bonded to the second fixing ring 32. The first rubber pad 34 and the second rubber pad 35 are both sleeved on the connecting shaft 33. One side of the first rubber pad 34 abuts against the first fixing ring 31, and the other side of the first rubber pad 34 abuts against the bag body 1. One side of the second rubber pad 35 abuts against the second fixing ring 32, and the other side of the second rubber pad 35 abuts against the bag body 1.

[0037] As can be seen from the above, for the anti-cracking kraft paper bag at the bottom provided by the embodiment of the present application, the bag body 1 made of laminated kraft paper has good moisture-proof performance and can protect the contents that are easily affected by the humid environment. When the user picks up and places items, the opening of the paper bag is subject to frequent friction and collision, so it is relatively easy to be damaged. The support strip 14 can protect the opening of the paper bag. When the bag body 1 at the opening is damaged, the support strip 14 can still ensure the normal use of the paper bag. The reinforcing rib 23 made of silicone material has good anti-tensile performance and can withstand a large tensile force without breaking. When the paper bag contains heavy objects inside, the reinforcing rib 23 can share a large pressure for the upper bottom surface 21 and the lower bottom surface 22 with relatively low anti-tensile strength, and prevent the bag bottom 2 from cracking due to excessive deformation. The first fixing ring 31, the second fixing ring 32, and the connecting shaft 33 can strengthen the connection between the bag bottom 2 and the bag body 1, and prevent the bag bottom 2 from falling off the bag body 1 after the glue used for bonding between the bag body 1 and the bag bottom 2 ages. The first rubber pad 34 and the second rubber pad 35 can make the first fixing ring 31 and the bag body 1 and the second fixing ring 32 and the bag body 1 fit more closely, and avoid accelerating the damage speed of the bag body 1 and the bag bottom 2 due to insufficient fitting and resulting friction.

[0038] In some embodiments, please refer to Figures 1 to 4, a plurality of threading holes 11 are formed in the bag body 1, a plurality of threading rings 13 are arranged on the bag body 1, the threading rings 13 are bonded to the bag body 1, a hand rope 12 is further arranged on the bag body 1, the hand rope 12 passes through the threading rings 13 and is slidably connected to the threading rings 13, and limiting balls 121 are sleeved on both ends of the hand rope 12.

[0039] With such a setting, the hand rope 12 can facilitate the user to lift the paper bag and increase the convenience when the paper bag is used. When the user uses the hand rope 12 to lift the paper bag, the limiting ball 121 contacts the threading ring 13 to prevent the hand rope 12 from falling off from the threading hole 11. The threading ring 13 can also distribute the pulling force of the hand rope 12 on the bag body 1 more evenly to the bag body 1 around the threading hole 11, avoiding the phenomenon that the threading hole 11 of the bag body 1 cracks due to uneven force.

[0040] In some embodiments, please refer to Figure 3 , a lining 15 is further arranged on the inner surface of the bag body 1, and the lining 15 is bonded to the inner surface of the bag body 1.

[0041] With such a setting, the lining 15 can be used to place some paper documents that are prone to breakage and wrinkles, and can play a protective role for them.

[0042] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A kraft paper bag with crack prevention at the bottom, characterized in that: It includes a bag body (1), a bag bottom (2) and a fixing component. The bag body (1) is made of laminated kraft paper. The bag bottom (2) includes an upper bottom surface (21), a lower bottom surface (22) and a reinforcing rib (23). The reinforcing rib (23) is made of silica gel. One side of the reinforcing rib (23) is adhered to the top of the lower bottom surface (22). The upper bottom surface (21) is arranged on the top of the reinforcing rib (23). The bottom of the upper bottom surface (21) is bonded to the reinforcing rib (23) and the lower bottom surface (22). The side of the lower bottom surface (22) away from the reinforcing rib (23) is bonded to the inner surface of the bag body (1). The fixing component is arranged on the bag body (1) and is used to fix the bag bottom (2).

2. A bottom anti-cracking kraft paper bag according to claim 1, characterized in that: The fixing component includes a first fixing ring (31), a second fixing ring (32) and a connecting shaft (33). The connecting shaft (33) passes through the bag body (1), the upper bottom surface (21), the lower bottom surface (22) and the reinforcing rib (23). The first fixing ring (31) is arranged at one end of the connecting shaft (33) located inside the bag body (1). A through hole (321) is opened on the second fixing ring (32). One end of the connecting shaft (33) away from the first fixing ring (31) passes through the through hole (321) and is bonded to the second fixing ring (32).

3. The bottom anti-cracking kraft paper bag according to claim 2, characterized in that: The fixing component further includes a first rubber pad (34) and a second rubber pad (35). Both the first rubber pad (34) and the second rubber pad (35) are sleeved on the connecting shaft (33). One side of the first rubber pad (34) abuts against the first fixing ring (31). The other side of the first rubber pad (34) abuts against the bag body (1). One side of the second rubber pad (35) abuts against the second fixing ring (32). The other side of the second rubber pad (35) abuts against the bag body (1).

4. A bottom anti-cracking kraft paper bag according to any one of claims 1-3, characterized in that: A plurality of threading holes (11) are opened on the bag body (1). A hand rope (12) is further arranged on the bag body (1). The hand rope (12) passes through the threading holes (11) and is slidably connected to the bag body (1). Limiting balls (121) are sleeved at both ends of the hand rope (12).

5. The kraft paper bag with anti-cracking bottom according to claim 4, characterized in that: A plurality of threading rings (13) are arranged on the bag body (1). The threading rings (13) are bonded to the bag body (1). The hand rope (12) passes through the threading rings (13) and is slidably connected to the threading rings (13).

6. The bottom anti-cracking kraft paper bag according to claim 5, characterized in that: The top of the bag body (1) is folded inwards towards the inside of the bag body (1). A support strip (14) is arranged on the inner surface of the bag body (1). The support strip (14) is located between the bag body (1) and the folded edge of the bag body (1) and is bonded to the bag body (1).

7. The bottom anti-cracking kraft paper bag according to claim 6, wherein: A lining (15) is further arranged on the inner surface of the bag body (1). The lining (15) is bonded to the inner surface of the bag body (1).

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