A paper product packaging box with waterproof effect

Abstract

The utility model discloses a paper product packing carton with waterproof effect relates to packing carton technical field, the packing carton includes: packing carton body and the sealing cover hinged on packing carton body, the packing carton body is from outside to inside in proper order outer layer paperboard, wave shape support layer and inner layer paperboard, three are through environmental protection glue adhesion, and the four -sided side wall in packing carton body is detachably installed with the sealing strip for waterproof through dismounting mechanism, the bottom surface fixed of packing carton body is equipped with the protection base. When using, overcome the poor sealing between the cover plate and the packing carton in the prior art in the process of using, thereby leading to the poor waterproof effect, meanwhile, the bottom of the packing carton is easy to damage when using.

Description

Technical Field

[0001] This utility model relates to the field of packaging box technology, specifically to a waterproof paper product packaging box. Background Technology

[0002] A packaging box is a box used to package and protect goods. It is usually made of materials such as cardboard, corrugated cardboard, plastic or metal. Packaging boxes play an important role in the transportation, storage and display of goods. They not only provide protection, but also convey brand image and information.

[0003] A search revealed that Chinese patent application CN221699621U discloses a waterproof paper product packaging box. By setting a second waterproof layer on the outside of the packaging box body, and in conjunction with a waterproof coating, water penetration into the inside of the packaging box body is prevented. Meanwhile, a first waterproof layer and an anti-corrosion layer are set on the outside of the insulation layer to prevent moisture from the inside of the packaging box body from penetrating to the outside, and simultaneously prevent liquids inside the packaging box from corroding the first waterproof layer.

[0004] However, the following technical problems still exist when implementing the above technical solutions: during the use of the packaging box, the seal between the cover and the packaging box is poor, resulting in poor waterproof effect. At the same time, the bottom of the packaging box is easily damaged during use.

[0005] Therefore, the present invention urgently needs to solve the problem of providing a waterproof paper packaging box that can effectively prevent moisture from entering through the edge gaps of the packaging box during use and avoid direct contact between the bottom of the packaging box and the damp ground. Utility Model Content

[0006] To address the aforementioned technical problems, the purpose of this utility model is to overcome the issues in the prior art where the sealing between the cover and the packaging box is poor during use, resulting in poor waterproofing, and the bottom of the packaging box is prone to damage during use. This invention provides a waterproof paper packaging box that effectively prevents moisture from entering through the edge gaps of the packaging box while avoiding direct contact between the bottom of the packaging box and a damp ground.

[0007] To achieve the above objectives, this utility model provides a waterproof paper product packaging box, which includes a packaging box body and a sealing cover hinged to the packaging box body. The packaging box body consists of an outer cardboard layer, a corrugated support layer, and an inner cardboard layer, which are bonded together with environmentally friendly adhesive. The four sides of the packaging box body are detachably fitted with waterproof sealing strips via a disassembly and assembly mechanism. A protective base is fixedly provided on the bottom surface of the packaging box body.

[0008] Preferably, the outer cardboard is made of kraft paper, the corrugated support layer is molded from corrugated paper, the corrugated support layer is made of white cardboard, and an air gap is formed between the crests and troughs of the corrugated support layer to reduce moisture conduction.

[0009] Preferably, the outer surface of the outer cardboard and the inner wall of the inner cardboard are attached with a composite waterproof membrane for waterproofing.

[0010] Preferably, the sealing cover is fixedly provided with a pressure strip that works in conjunction with the sealing strip.

[0011] Preferably, the disassembly and assembly mechanism includes: a pressure plate, a slide rod, and a second spring; wherein, The packaging box body has an installation groove for placing a sealing strip. A sliding rod slides through the inner side wall of the packaging box body. A pressure plate parallel to the sealing strip is fixed on the top surface of the sliding rod for fixing the sealing strip. A second spring is sleeved on the sliding rod, with its two ends abutting against the side wall of the pressure plate and the side wall of the packaging box body, respectively.

[0012] Preferably, the pressure strip has a clearance groove for use with the pressure plate.

[0013] Preferably, multiple sets of first springs are fixedly installed at intervals in the mounting groove, and the top of each first spring is fixedly connected to a baffle that slides against the inner sidewall of the mounting groove and abuts against the sealing strip.

[0014] Preferably, the sealing cap is locked to the packaging box body by a lock.

[0015] According to the above technical solution, the waterproof paper packaging box provided by this utility model has the following beneficial effects during use: the waterproof sealing strips installed on the four sides of the inner body of the packaging box can effectively prevent water from entering from the edge gaps of the packaging box when the sealed lid is closed, providing reliable waterproof protection for the items inside the packaging box; the setting of the protective base avoids direct contact between the bottom surface of the packaging box and the damp ground, further reducing the risk of water penetration and enhancing the waterproof effect of the entire packaging box.

[0016] Other features and advantages of this utility model will be described in detail in the following detailed description section; and all parts not covered in this utility model are the same as or can be implemented using existing technology. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1A three-dimensional structural diagram of a waterproof paper product packaging box provided in a preferred embodiment. Figure 1 ; Figure 2 A three-dimensional structural diagram of a waterproof paper product packaging box provided in a preferred embodiment. Figure 2 ; Figure 3 This is a cross-sectional perspective view of a waterproof paper product packaging box provided in a preferred embodiment. Figure 4 yes Figure 3 Enlarged view of the 3D structure at point A; Figure 5 This is a plan view of a waterproof paper product packaging box provided in a preferred embodiment; Figure 6 yes Figure 5 Sectional view of AA; Figure 7 yes Figure 6 Enlarged view of the structure at point B; Figure 8 This is a cross-sectional structural diagram of a waterproof paper product packaging box provided in a preferred embodiment.

[0018] Explanation of reference numerals in the attached figures 100. Packaging box body; 101. Sealing cap; 1001. Outer cardboard; 1002. Corrugated support layer; 1003. Inner cardboard; 1004. Air gap; 1005. Composite waterproof membrane; 102. Lock; 103. Protective base; 104. Sealing strip; 105. Pressure strip; 200. Assembly / disassembly mechanism; 201. Mounting groove; 202. Clearance groove; 203. Baffle; 204. First spring; 205. Pressure plate; 206. Slide rod; 207. Second spring. Detailed Implementation

[0019] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0020] In this utility model, unless otherwise stated, directional words such as "upper," "lower," "inner," and "outer" included in the terminology only represent the orientation of the term in its conventional use or are common terms understood by those skilled in the art, and should not be regarded as limitations on the term.

[0021] Reference Figures 1-8As shown, a waterproof paper product packaging box includes: a packaging box body 100 and a sealing cover 101 hinged to the packaging box body 100. The packaging box body 100 consists of an outer cardboard layer 1001, a corrugated support layer 1002, and an inner cardboard layer 1003 from the outside to the inside. The three layers are bonded together with environmentally friendly adhesive. The four sides of the inner sidewalls of the packaging box body 100 are detachably fitted with waterproof sealing strips 104 through a disassembly and assembly mechanism 200. A protective base 103 is fixedly provided on the bottom surface of the packaging box body 100.

[0022] In use, the sealing cover 101 is hinged to the packaging box body 100, allowing it to open and close flexibly for easy insertion and removal of items. Then, the waterproof sealing strip 104 is installed on the four side walls inside the packaging box body 100 using the disassembly and assembly mechanism 200. The design of the disassembly and assembly mechanism 200 makes the installation and removal of the sealing strip 104 convenient, facilitating future replacement and maintenance. Finally, the protective base 103 is fixed to the bottom of the packaging box body 100, providing additional protection. The hinged sealing cover 101 is then opened, and the items to be packaged are placed inside the packaging box body 100. The sealing cover 101 is then closed, at which point the sealing strip 104 fits tightly against the cover, forming a relatively sealed space to prevent moisture from entering the packaging box, allowing the packaged item to be transported or stored. During this process, the corrugated support layer 1002 acts as a buffer, reducing the impact of external shocks on the items inside the packaging box. The protective base 103 prevents the bottom of the packaging box from directly contacting the ground, thus preventing moisture from seeping into the box. If the waterproofing effect of the sealing strip 104 decreases after a period of use, the old sealing strip 104 can be removed using the disassembly mechanism 200, and a new sealing strip 104 can be installed to ensure the packaging box's waterproof performance.

[0023] Reference Figure 8 As shown, the outer cardboard 1001 is made of kraft paper, the corrugated support layer 1002 is molded from corrugated paper, the corrugated support layer 1002 is white cardboard, and an air gap 1004 is formed between the crests and troughs of the corrugated support layer 1002 to reduce moisture conduction.

[0024] In the above solution, during daily use, transportation, or storage, when external moisture comes into contact with the packaging box, the outer kraft paper, with its certain water resistance, first blocks some of the moisture from penetrating. If a small amount of moisture penetrates through the outer cardboard 1001, it will encounter the air gap 1004 of the corrugated support layer 1002. Air, as a poor conductor of heat and also an obstacle to moisture conduction, makes it difficult for moisture to pass through the air gap 1004, greatly slowing down the rate at which moisture penetrates into the inner layer. The inner white cardboard, due to its relatively smooth surface and its tight fit with the corrugated support layer 1002, further prevents moisture from entering the packaging box, providing good protection for the contents.

[0025] Reference Figure 8 As shown, the outer side of the outer cardboard 1001 and the inner sidewall of the inner cardboard 1003 are attached with a composite waterproof membrane 1005 for waterproofing.

[0026] In the above solution, when the packaging box is in a wet environment, the composite waterproof membrane 1005 on the outer surface of the outer cardboard 1001 first comes into play. Its special waterproof material can block most of the moisture, greatly reducing the possibility of moisture penetrating the outer cardboard 1001. If a very small amount of moisture breaks through the outer waterproof membrane, the corrugated support layer 1002 and the inner cardboard 1003 will further block the moisture. At the same time, the composite waterproof membrane 1005 on the inner wall of the inner cardboard 1003 forms the last line of defense, preventing moisture from contacting the items inside the packaging box, and ensuring a dry environment for the items in all aspects.

[0027] Reference Figures 2-6 As shown, a pressure strip 105 is fixedly provided on the sealing cover 101 to cooperate with the sealing strip 104.

[0028] In the above solution, when the packaging box needs to be closed, the sealing cap 101 is rotated towards the packaging box body 100, gradually bringing it closer. As the sealing cap 101 is about to completely cover the packaging box body 100, the pressure strip 105 begins to contact the sealing strip 104. As the sealing cap 101 continues to rotate and close, the pressure strip 105 gradually applies pressure to the sealing strip 104, causing the sealing strip 104 to deform to a certain extent, tightly fitting against the contact edge between the sealing cap 101 and the packaging box body 100, thereby forming an effective waterproof seal that prevents moisture from entering the packaging box through the gap between the two.

[0029] Reference Figures 3-6 As shown, the disassembly and assembly mechanism 200 includes: a pressure plate 205, a slide rod 206, and a second spring 207; wherein, The packaging box body 100 has an installation groove 201 for placing the sealing strip 104. A slide rod 206 slides through the inner side wall of the packaging box body 100. A pressure plate 205 parallel to the sealing strip 104 is fixed on the top surface of the slide rod 206 for fixing the sealing strip 104. A second spring 207 is sleeved on the slide rod 206, with its two ends abutting against the side wall of the pressure plate 205 and the side wall of the packaging box body 100, respectively.

[0030] In the above scheme, pulling the slide rod 206 causes the pressure plate 205 to slide into the packaging box body 100, placing the sealing strip 104 in the mounting groove 201. Then, the slide rod 206 is released, and under the elastic action of the second spring 207, the slide rod 206 slides outward within the inner wall of the packaging box body 100. When the pressure plate 205 slides to a position that can firmly press the sealing strip 104 into the mounting groove 201, the sliding stops. At this time, the elastic force of the second spring 207 continues to act on the sealing strip 104 through the pressure plate 205, ensuring that the sealing strip 104 is stably fixed in the mounting groove 201 without loosening or displacement. When it is necessary to replace the sealing strip 104, pulling the slide rod 206 causes the pressure plate 205 to move away from the sealing strip 104, so that the sealing strip 104 is no longer subject to the pressing force of the pressure plate 205, and the old sealing strip 104 can be removed from the mounting groove 201. Then, following the installation procedure described above, insert the new sealing strip 104 and tighten it again.

[0031] Reference Figure 6 As shown, the pressure strip 105 is provided with a relief groove 202 that cooperates with the pressure plate 205.

[0032] In the above design, the cooperative design of the clearance groove 202 and the pressure plate 205 allows the pressure strip 105 and the pressure plate 205 to work together better when applying pressure to the sealing strip 104. This avoids potential mutual interference or collision between the two, ensuring a more uniform pressure distribution on the sealing strip 104, thereby further improving the waterproof sealing performance of the packaging box and effectively reducing the risk of moisture penetration.

[0033] Reference Figures 6-7 As shown, multiple sets of first springs 204 are fixedly installed at intervals in the mounting groove 201. The top of each first spring 204 is fixedly connected to a baffle 203 that slides against the inner sidewall of the mounting groove 201 and abuts against the sealing strip 104.

[0034] In the above scheme, the sealing strip 104 is placed in the mounting groove 201, at which point the sealing strip 104 will abut against the baffle 203. As the sealing strip 104 is inserted, the baffle 203, under the pressure of the sealing strip 104, will compress the first spring 204 and move downward. The elastic force generated by the first spring 204 will act in the opposite direction on the sealing strip 104 through the baffle 203, pressing the sealing strip 104 tightly into the mounting groove 201. At the same time, the pressure plate 205, under the action of the second spring 207, also applies pressure to the sealing strip 104. Through the forces acting in both the upper and lower directions, it is ensured that the sealing strip 104 is stably fixed in the mounting groove 201 without loosening or displacement. When the pressure plate 205 moves away from the sealing strip 104, so that the sealing strip 104 is no longer under the pressing force of the pressure plate 205, the second spring 207 drives the baffle 203 to move upward, causing the sealing strip 104 to disengage from the mounting groove 201, making it easy to disassemble.

[0035] Reference Figures 1-2 As shown, the sealing cap 101 is locked to the packaging box body 100 by the lock head 102.

[0036] In the above solution, regarding waterproofing, the locking action of the lock head 102 further enhances the tightness between the sealing cover 101 and the packaging box body 100. During transportation, even if bumps or squeezing occur, the sealing cover 101 will not easily loosen due to the fixing action of the lock head 102, thereby ensuring that the sealing strip 104 is always in a good sealing state, improving the waterproof reliability of the packaging box, and providing more reliable waterproof protection for the contents.

[0037] In summary, this utility model provides a waterproof paper product packaging box. In use, the sealing cover 101 is opened, and the items to be packaged are placed inside the packaging box body 100. The sealing cover 101 is then closed. During the closing process, the pressure strip 105 moves closer to the packaging box body 100 along with the sealing cover 101, contacting the sealing strip 104 and applying pressure. Simultaneously, the pressure plate 205, under the action of the second spring 207, presses the sealing strip 104 tightly. As the sealing cover 101 closes further, the pressure plate 205 enters the relief groove 202 on the pressure strip 105. The pressure plate 205 and the pressure strip 105 work together to ensure that the sealing strip 104 is tightly fitted against the contact edge between the sealing cover 101 and the packaging box body 100. Subsequently, the locking mechanism 102 securely locks the sealing cap 101 onto the packaging box body 100, ensuring the safety of the items during transportation or storage. During daily use, transportation, or storage, when external moisture comes into contact with the packaging box, the composite waterproof membrane 1005 on the outer surface of the outer cardboard 1001 first blocks most of the moisture. If a small amount of moisture penetrates, it encounters the air gap 1004 in the corrugated support layer 1002, slowing the rate of moisture penetration into the inner layer. The composite waterproof membrane 1005 on the inner wall of the inner cardboard 1003 forms the final line of defense, preventing moisture from contacting the items inside the packaging box. Simultaneously, the protective base 103 prevents the bottom of the packaging box from directly contacting damp ground, reducing the risk of moisture penetration. If the packaging box is subjected to vibration or external impact, the buffer structure composed of the first spring 204 and the baffle 203 will function, using its own elastic deformation to buffer the external force and keep the sealing strip 104 in the proper position, maintaining good waterproof sealing performance. When it is necessary to replace the sealing strip 104, pull the slide rod 206 to move the pressure plate 205 away from the sealing strip 104, so that the sealing strip 104 is no longer under the pressure of the pressure plate 205, and the old sealing strip 104 can be removed from the mounting groove 201. Then, following the above installation procedure, insert the new sealing strip 104 and tighten it again.

[0038] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0039] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0040] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. A waterproof paper packaging box, characterized in that, The packaging box includes: a packaging box body (100) and a sealing cap (101) hinged to the packaging box body (100). The packaging box body (100) consists of an outer cardboard layer (1001), a corrugated support layer (1002), and an inner cardboard layer (1003) from the outside to the inside. The three are bonded together with environmentally friendly adhesive. The four sides of the packaging box body (100) are detachably fitted with sealing strips (104) for waterproofing through a disassembly and assembly mechanism (200). A protective base (103) is fixedly provided on the bottom surface of the packaging box body (100).

2. A waterproof paper packaging box according to claim 1, characterized in that, The outer cardboard (1001) is made of kraft paper, the corrugated support layer (1002) is molded from corrugated paper, the corrugated support layer (1002) is made of white cardboard, and an air gap (1004) is formed between the crests and troughs of the corrugated support layer (1002) to reduce moisture conduction.

3. A waterproof paper packaging box according to claim 1, characterized in that, The outer side of the outer cardboard (1001) and the inner sidewall of the inner cardboard (1003) are covered with a composite waterproof membrane (1005) for waterproofing.

4. A waterproof paper packaging box according to claim 1, characterized in that, The sealing cover (101) is fixedly provided with a pressure strip (105) that works in conjunction with the sealing strip (104).

5. A waterproof paper packaging box according to claim 1, characterized in that, The disassembly / assembly mechanism (200) includes: a pressure plate (205), a slide rod (206), and a second spring (207); wherein, The packaging box body (100) has an installation groove (201) for placing a sealing strip (104) inside. A slide rod (206) slides through the inner side wall of the packaging box body (100). A pressure plate (205) parallel to the sealing strip (104) is fixed on the top surface of the slide rod (206) for fixing the sealing strip (104). A second spring (207) is sleeved on the slide rod (206) and its two ends are respectively abutted against the side wall of the pressure plate (205) and the side wall of the packaging box body (100).

6. A waterproof paper packaging box according to claim 4, characterized in that, The pressure strip (105) is provided with a relief groove (202) that is used in conjunction with the pressure plate (205).

7. A waterproof paper packaging box according to claim 5, characterized in that, Multiple sets of first springs (204) are fixedly installed at intervals in the mounting groove (201). The top of each first spring (204) is fixedly connected to a baffle (203) that slides against the inner sidewall of the mounting groove (201) and abuts against the sealing strip (104).

8. A waterproof paper packaging box according to claim 1, characterized in that, The sealing cap (101) is locked to the packaging box body (100) by a lock (102).

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