A paper corner protector glue edge sealing process

Abstract

This invention relates to a paper corner protector adhesive sealing process. It involves evenly creating several adhesive-receiving holes at the corners of the carton to be sealed, and evenly creating several first adhesive-receiving grooves on the corner protectors. This increases the adhesive strength between the corner protectors and the carton, thereby enhancing the bonding stability. Several second adhesive-receiving grooves are evenly created on the two inner walls of the edge protector strip. This further increases the adhesive strength between the edge protector strip and the carton, enhancing the bonding stability. Adhesive is applied to both ends of the edge protector strip, and each end of each edge protector strip is joined to a corresponding splicing surface. A sealing step involves applying sealant to the gaps between the edge protector strip, corner protectors, and the carton to further enhance the sealing of the carton corners. Finally, a sealing film is wrapped around the sealant-coated carton to increase the overall sealing of the carton.

Description

Technical Field

[0001] This invention relates to the field of cardboard corner sealing processing, and in particular to a paper corner sealing adhesive process. Background Technology

[0002] Cardboard boxes are the most common packaging products in daily life, mainly used for the protection, storage, transportation, and organization of goods. They can be divided into various types according to material and structure, such as corrugated cardboard boxes and single-layer cardboard boxes, with three- or five-layer structures being the most common. Thickened cardboard boxes used for everyday storage and organization are often used for family moves, clothing storage, or office document organization because they are inexpensive and easy to fold, making them a good temporary storage solution. Colored boxes or special cardboard boxes are used directly as outer packaging for goods, serving to showcase the brand and beautify the product; they are commonly found in the electronics, cosmetics, and food industries.

[0003] However, the primary function of cardboard boxes is to protect goods during logistics and transportation, preventing them from being damaged by collisions, moisture, or compression. Traditional cardboard boxes are prone to damage and cracking at the corners due to impacts, affecting their airtightness and structural stability. Summary of the Invention

[0004] Therefore, it is necessary to provide a paper corner protector glue sealing process to address the technical problem that the corners of traditional cardboard boxes are easily damaged and cracked due to collisions, affecting the airtightness and structural stability of the cardboard boxes.

[0005] A paper corner protector adhesive edge sealing process, the process includes the following steps: Steps for punching holes at the corners of a cardboard box: Evenly punch several holes for adhesive to be applied at the corners of the cardboard box to be sealed. Corner protector grooving steps: The corner protector is a hollow triangular pyramid structure. The three corners at the bottom of the corner protector are cut off to form three splicing surfaces; several first adhesive grooves are evenly cut on the three inner walls of the corner protector. Corner protector bonding steps: Apply a layer of adhesive evenly to the inner wall of each corner protector; place each corner protector on one corner of the carton to be sealed. First step in removing residual adhesive: Scrape off the adhesive that overflowed during the bonding process between the corner protectors and the carton to be sealed. First adhesive bonding step: Place the cardboard box to be sealed with corner protectors attached in the adhesive bonding room for adhesive bonding to ensure that the corner protectors are firmly attached to the cardboard box to be sealed; Grooving steps for edge protector strip: The edge protector strip has an L-shaped plate structure, and several second adhesive grooves are evenly opened on the two inner walls of the edge protector strip; Edge protector bonding steps: Apply a layer of adhesive evenly to the two inner walls of the edge protector; apply splicing adhesive to both ends of the edge protector; place each edge protector on one edge of the carton to be sealed; and splice each end of each edge protector with a splicing surface. The second residual adhesive removal step: Scrape off the adhesive that overflowed during the bonding process between the edge protector strip and the carton to be sealed; scrape off the adhesive that overflowed during the bonding process between the edge protector strip and a splicing surface. The second adhesive bonding step: Place the carton to be sealed with the edge protectors and corner protectors installed in the adhesive bonding room for adhesive bonding operations, so that the edge protectors are firmly bonded to the carton to be sealed, and one end of each edge protector is spliced ​​together with one splicing surface of a corner protector. Sealing steps: Apply sealant to the gaps between the edge protectors, corner protectors and the carton; The third step is to solidify the sealant: Place the cardboard box coated with sealant in the solidification room for solidification, so that the sealant seals the gaps between the edge protectors, corner protectors and the cardboard box. The cardboard box wrapping step involves wrapping a layer of sealing film around the cardboard box that has been coated with sealant.

[0006] In one embodiment, the radius of the first adhesive groove is 0.1 mm to 0.3 mm.

[0007] In one embodiment, the radius of the first adhesive groove is 0.2 mm.

[0008] In one embodiment, the radius of the first adhesive groove is 0.1 mm to 0.3 mm.

[0009] In one embodiment, the radius of the first adhesive groove is 0.2 mm.

[0010] In one embodiment, the edge protector is a rigid rubber strip.

[0011] In one embodiment, the corner protector is a hard rubber cap.

[0012] In one embodiment, the adhesive-receiving holes are arranged in an array at the corners of the carton to be sealed.

[0013] In one embodiment, the radius of the adhesive-bearing hole is 0.1 mm to 0.3 mm.

[0014] In one embodiment, the radius of the adhesive-bearing hole is 0.2 mm.

[0015] The aforementioned paper corner protector adhesive sealing process involves evenly creating several adhesive-receiving holes at the corners of the carton to be sealed, and evenly creating several first adhesive-receiving grooves on the three inner walls of the corner protector caps. This increases the adhesive strength between the corner protector caps and the carton, thereby enhancing the bonding stability between them. Several second adhesive-receiving grooves are then evenly created on the two inner walls of the edge protector strip. This further increases the adhesive strength between the edge protector strip and the carton, enhancing the bonding stability between them. Adhesive is applied to both ends of the edge protector strip, and each end of each edge protector strip is joined to a corresponding splicing surface. A sealing step involves applying sealant to the gaps between the edge protector strips, corner protectors, and the carton to further enhance the sealing of the carton corners. Finally, a sealing film is wrapped around the sealant-coated carton to increase the overall sealing of the carton. The aforementioned paper corner protector glue sealing process greatly increases the structural stability and strength of the carton, resulting in excellent impact resistance and good sealing performance of the carton's corners. Attached Figure Description

[0016] Figure 1 This is a flowchart illustrating the paper corner protector adhesive sealing process in one embodiment; Figure 2 This is a schematic diagram of the structure of a carton to be sealed in one embodiment; Figure 3 This is a schematic diagram of the structure of a cardboard box after edge sealing in one embodiment. Detailed Implementation

[0017] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below. In the description of the present invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0018] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0019] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0020] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0021] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0022] Please refer to the following: Figures 1 to 3 This invention provides a paper corner protector adhesive sealing process, the process comprising the following steps: Step 101: Punching holes at the corners of the carton: Evenly punch several holes for adhesive backing at the corners of the carton to be sealed.

[0023] Specifically, several adhesive-receiving holes are evenly formed at the corners of the carton to be sealed. Furthermore, these adhesive-receiving holes are arranged in an array at the corners of the carton to be sealed. This increases the amount of adhesive that can be absorbed at the corners of the carton, thereby increasing the bonding stability between the carton to be sealed and the corner protectors 200 and the edge protectors 300. In this embodiment, the radius of the adhesive-receiving holes is 0.1 mm to 0.3 mm. Specifically, the radius of the adhesive-receiving holes is 0.2 mm.

[0024] Step 102: Grooving step for corner protector 200: The corner protector 200 is a hollow triangular pyramid structure. The three corners at the bottom of the corner protector 200 are cut off to form three splicing surfaces 210. Several first adhesive-bearing grooves are evenly cut into the three inner walls of the corner protector 200. In this embodiment, the corner protector 200 is a hard rubber cap.

[0025] Specifically, the three corners of the bottom of the corner protector 200 are cut off to form three splicing surfaces 210 for splicing with the edge protector 300. A plurality of first adhesive-receiving grooves are evenly formed on the three inner walls of the corner protector 200. In this embodiment, the radius of the first adhesive-receiving groove is 0.1 mm to 0.3 mm. Specifically, the radius of the first adhesive-receiving groove is 0.2 mm.

[0026] Step 103: Corner Protector 200 Adhesion Step: Apply a layer of adhesive evenly to the inner walls of each corner protector 200. Place each corner protector 200 onto one corner of the carton to be sealed.

[0027] Specifically, a layer of adhesive is evenly applied to the inner walls of each corner protector 200. Each corner protector 200 is then placed on one corner of the carton to be sealed.

[0028] Step 104: First Residual Adhesive Removal Step: Clean up the adhesive that overflowed during the bonding process between the corner cap 200 and the carton to be sealed.

[0029] Specifically, scrape off any excess adhesive that overflows during the bonding process between the corner protector 200 and the carton to be sealed, in order to improve the appearance and facilitate subsequent sealing.

[0030] Step 105: First adhesive bonding step: Place the carton to be sealed with corner protectors 200 attached in the adhesive bonding room for adhesive bonding operation to ensure that the corner protectors 200 are firmly attached to the carton to be sealed.

[0031] Specifically, the carton to be sealed, with the corner protectors 200 attached, is placed in a curing chamber for curing to ensure the corner protectors 200 are firmly bonded to the carton. The temperature in the curing chamber is 38 to 48 degrees Celsius, and the curing time is 10 to 20 hours. Specifically, in this case, the temperature is 42 degrees Celsius, and the curing time is 16 hours.

[0032] Step 106: Grooving steps for edge protector strip 300: Edge protector strip 300 is an L-shaped plate structure, and several second adhesive grooves are evenly opened on the two inner walls of edge protector strip 300.

[0033] Specifically, in this embodiment, the edge protector 300 is a rigid rubber strip. A plurality of second adhesive-receiving grooves are evenly formed on the two inner walls of the edge protector 300. In this embodiment, the radius of the first adhesive-receiving groove is 0.1 mm to 0.3 mm. Specifically, the radius of the first adhesive-receiving groove is 0.2 mm.

[0034] Step 107: Edge Guard Strip 300 Bonding Steps: Apply a layer of adhesive evenly to both inner walls of the edge guard strip 300. Apply splicing adhesive to both ends of the edge guard strip 300, and place each edge guard strip 300 on one edge of the carton to be sealed. Splice each end of each edge guard strip 300 with a splicing surface 210.

[0035] Specifically, a layer of adhesive is evenly applied to both inner walls of the edge protector strip 300. Splicing adhesive is applied to both ends of the edge protector strip 300, and each edge protector strip 300 is placed on one edge of the carton to be sealed. Each end of each edge protector strip 300 is then spliced ​​together with a splicing surface 210.

[0036] Step 108: Second Residual Adhesive Removal Step: Clean up the adhesive that overflowed during the bonding process between the edge protector strip 300 and the carton to be sealed. Clean up the adhesive that overflowed during the bonding process between the edge protector strip 300 and a splicing surface 210.

[0037] Specifically, scrape off any excess adhesive that overflows during the bonding process between the edge protector strip 300 and the carton to be sealed. Also scrape off any excess adhesive that overflows during the bonding process between the edge protector strip 300 and the splicing surface 210. This improves the appearance and facilitates subsequent sealing. Step 109: Second adhesive bonding step: Place the carton to be sealed, with the edge protector strips 300 and corner protectors 200 installed, in the adhesive bonding room for adhesive bonding operation, so that the edge protector strips 300 are firmly bonded to the carton to be sealed, and one end of each edge protector strip 300 is spliced ​​together with one splicing surface 210 of a corner protector 200.

[0038] Specifically, the cardboard box to be sealed, with the edge protector strips 300 and corner protectors 200 installed, is placed in a curing chamber for curing. This ensures the edge protector strips 300 are firmly bonded to the cardboard box, with one end of each edge protector strip 300 corresponding to a splicing surface 210 of a corner protector 200. The temperature in the curing chamber is 40 to 44 degrees Celsius, and the curing time is 12 to 24 hours. Specifically, in a curing chamber with a temperature of 40 degrees Celsius, the curing time is 20 hours.

[0039] Step 110: Sealing Step: Apply sealant to the gaps between the edge protector strip 300, corner protector cap 200 and the carton.

[0040] Specifically, apply sealant to the gaps between the edge protector strip 300, corner protector cap 200 and the carton.

[0041] Step 111: Third adhesive treatment step: Place the cardboard box coated with sealant in the adhesive treatment room for adhesive treatment, so that the sealant seals the gap between the edge protector strip 300, corner protector 200 and the cardboard box.

[0042] Specifically, the cardboard boxes coated with sealant are placed in a curing chamber for curing, allowing the sealant to seal the gaps between the edge protectors 300, corner caps 200, and the cardboard box. The temperature in the curing chamber is 37 to 45 degrees Celsius, and the curing time is 10 to 20 hours. Specifically, the temperature in the curing chamber is 40 degrees Celsius, and the curing time is 18 hours.

[0043] Step 112: Cardboard box wrapping step, wrap a layer of sealing film around the cardboard box that has been coated with sealant.

[0044] Specifically, a sealing film is wrapped around the cardboard box coated with sealant to increase the overall airtightness of the box.

[0045] The aforementioned paper corner protector adhesive sealing process involves evenly creating several adhesive-receiving holes at the corners of the carton to be sealed, and evenly creating several first adhesive-receiving grooves on the three inner walls of the corner protector 200. This increases the adhesive strength between the corner protector 200 and the carton, thereby enhancing the bonding stability between them. Similarly, evenly creating several second adhesive-receiving grooves on the two inner walls of the edge protector strip 300 further increases the adhesive strength between them, further enhancing the bonding stability. Adhesive is applied to both ends of the edge protector strip 300, and each end of each edge protector strip 300 is then joined to a corresponding splicing surface 210. Finally, a sealing step applies sealant to the gaps between the edge protector strip 300, the corner protector 200, and the carton, further improving the sealing of the carton corners. By wrapping the cardboard box, a sealing film is applied to the sealed cardboard box to increase its overall airtightness. This paper corner protector and adhesive edge sealing process significantly increases the structural stability and strength of the cardboard box, resulting in excellent impact resistance and a good seal at the corners.

[0046] To increase the bonding stability between the edge protector strip 300, corner protector cap 200, and the carton, in one embodiment, the adhesive comprises the following components in parts by weight: 40 to 60 parts neoprene rubber, 5 to 10 parts methyl acrylate, 3 to 8 parts graphite powder, 8 to 14 parts methyl ethyl ketone (MEK), 4 to 10 parts cyclohexane, 5 to 15 parts zinc oxide, 6 to 12 parts stearic acid, and 8 to 16 parts ethyl acetate. Thus, the adhesive composed of the above components can increase the bonding stability between the edge protector strip 300, corner protector cap 200, and the carton.

[0047] To seal the gap between the edge protector 300, corner protector 200, and the carton, in one embodiment, the sealant comprises the following components in parts by weight: 6 to 10 parts epoxy resin, 30 to 50 parts polycyclopentadiene dioxide, 5 to 10 parts polycaprolactone diol, 10 to 16 parts vermiculite powder, 3 to 5 parts mica powder, 6 to 11 parts polyetheramine, 10 to 20 parts vinyl silicone oil, 4 to 8 parts tetraethyl orthosilicate, 2 to 4 parts diaminodiphenyl sulfone, and 3 to 6 parts nitrile rubber. Thus, the sealant composed of the above components can seal the gap between the edge protector 300, corner protector 200, and the carton.

[0048] To bond the edge protector 300 and the corner protector 200 together, in one embodiment, the adhesive comprises the following components in parts by weight: 20 to 60 parts of polyurethane prepolymer, 10 to 20 parts of toluene diisocyanate, 12 to 20 parts of HDI trimer, 3 to 6 parts of diisodecyl phthalate, 1 to 2 parts of glycerol, 5 to 10 parts of linoleic acid, 8 to 18 parts of glycerol, 10 to 16 parts of ethyl acetate, 4 to 8 parts of chloroprene rubber, and 3 to 6 parts of dimethylolpropionic acid. In this embodiment, the polyurethane prepolymer is obtained by reacting an aliphatic polyester diol with a diisocyanate. The adhesive comprising the above components can bond the edge protector 300 and the corner protector 200 together.

[0049] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0050] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A paper corner protector adhesive sealing process, characterized in that, The process includes the following steps: Steps for punching holes at the corners of a cardboard box: Evenly punch several holes for adhesive to be applied at the corners of the cardboard box to be sealed. Corner protector grooving steps: The corner protector is a hollow triangular pyramid structure. The three corners at the bottom of the corner protector are cut off to form three splicing surfaces; several first adhesive grooves are evenly cut on the three inner walls of the corner protector. Corner protector bonding steps: Apply a layer of adhesive evenly to the inner wall of each corner protector; place each corner protector on one corner of the carton to be sealed. First step in removing residual adhesive: Scrape off the adhesive that overflowed during the bonding process between the corner protectors and the carton to be sealed. First adhesive bonding step: Place the cardboard box to be sealed with corner protectors attached in the adhesive bonding room for adhesive bonding to ensure that the corner protectors are firmly attached to the cardboard box to be sealed; Grooving steps for edge protector strip: The edge protector strip has an L-shaped plate structure, and several second adhesive grooves are evenly opened on the two inner walls of the edge protector strip; Edge protector bonding steps: Apply a layer of adhesive evenly to the two inner walls of the edge protector; apply splicing adhesive to both ends of the edge protector; place each edge protector on one edge of the carton to be sealed; and splice each end of each edge protector with a splicing surface. The second residual adhesive removal step: Scrape off the adhesive that overflowed during the bonding process between the edge protector strip and the carton to be sealed; scrape off the adhesive that overflowed during the bonding process between the edge protector strip and a splicing surface. The second adhesive bonding step: Place the carton to be sealed with the edge protectors and corner protectors installed in the adhesive bonding room for adhesive bonding operations, so that the edge protectors are firmly bonded to the carton to be sealed, and one end of each edge protector is spliced ​​together with one splicing surface of a corner protector. Sealing steps: Apply sealant to the gaps between the edge protectors, corner protectors and the carton; The third step is to solidify the sealant: Place the cardboard box coated with sealant in the solidification room for solidification, so that the sealant seals the gaps between the edge protectors, corner protectors and the cardboard box. The cardboard box wrapping step involves wrapping a layer of sealing film around the cardboard box that has been coated with sealant.

2. The process according to claim 1, characterized in that, The radius of the first adhesive groove is 0.1 mm to 0.3 mm.

3. The process according to claim 2, characterized in that, The radius of the first adhesive groove is 0.2 mm.

4. The process according to claim 1, characterized in that, The radius of the first adhesive groove is 0.1 mm to 0.3 mm.

5. The process according to claim 4, characterized in that, The radius of the first adhesive groove is 0.2 mm.

6. The process according to claim 1, characterized in that, The edge protection strip is a hard rubber strip.

7. The process according to claim 6, characterized in that, The corner protector is a hard rubber cap.

8. The process according to claim 7, characterized in that, The adhesive-receiving holes are arranged in an array at the corners of the carton to be sealed.

9. The process according to claim 1, characterized in that, The radius of the adhesive-bearing hole is 0.1 mm to 0.3 mm.

10. The process according to claim 9, characterized in that, The radius of the adhesive-bearing hole is 0.2 mm.

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