Bio-based damp-proof express box based on gradient flow guide structure

Abstract

The invention provides a gradient diversion structure-based bio-based moisture-proof express box, which comprises a box body and a buffer structure, and is characterized in that the box body is composed of a bottom wall, side walls and a top cover; the bottom wall comprises a first base material layer and flow guide grids from top to bottom, and the flow guide grids are V-shaped convex ribs which are arranged in parallel; a conical flow guide through hole is formed in the bottom between every two adjacent V-shaped protruding ribs in the length direction of the V-shaped protruding ribs, and water collecting grooves are formed in the positions, corresponding to the V-shaped protruding ribs, of the first base material layer. Water outlet channels are formed in two opposite side walls which are vertical to the water collecting tank; a water squeezing layer is embedded in the lower part of the water collecting tank; the buffer structure comprises a bionic rhombus lining and a degradable filling layer embedded in a gap of the bionic rhombus lining; the side wall sequentially comprises a second base material layer, a hydrophobic coating and a moisture-proof film layer from inside to outside; the inner surface of the top cover is fixedly connected with a honeycomb-shaped mould-proof module; a gradient flow guide structure is adopted, the fluid efficiency is improved, a whole bio-based material is degraded in a closed-loop mode, the environment-friendly concept is met, and the damp-proof aging is long

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of packaging boxes, in particular to a biological base moisture-proof express box based on gradient flow guide structure. BACKGROUND

[0002] China authorized publication number CN222683086U, authorized publication date March 28, 2025, discloses a kind of damp-proof paper product packaging box, including box, the upper surface of the box is provided with cover plate, the inner wall of the box is provided with microporous membrane, the inside bottom edge of the box is equipped with drainage groove, the left and right sides below the front of the box and the left and right sides below the back of the box and the two corners below the left and right sides of the box are all equipped with water outlet, the upper middle part of the left and right sides of the box is equipped with recess, the front and back of the box are all provided with a plurality of number of convex rods.The utility model discloses the microporous membrane of being provided with in the inner wall of box, microporous membrane is made of polyethylene material, with air permeability, water vapor can be penetrated through the inner wall of carton, but water droplets cannot penetrate, drainage groove is embedded in the inside bottom edge of box, water on the surface of microporous membrane falls into drainage groove, is discharged outward through drain hole, to effectively improve the effect of the moisture-proof effect of packaging box.This prior art has the defects that:1, drainage groove is passive drainage depending on gravity, easy to be blocked by particulate matter;2, polyethylene material is made into microporous membrane only to block liquid water;3, plastic components in the prior art, such as polyethylene material made into microporous membrane and dehumidifier, lead to low recovery efficiency;In view of this situation, it is urgent to improve. SUMMARY

[0003] Therefore, the present application aims to provide a biological base moisture-proof express box based on gradient flow guide structure, which improves fluid efficiency, is fully biobased material closed-loop degradation, conforms to the concept of environmental protection, and has long moisture-proof shelf life.

[0004] The application provides a biological-based moisture-proof express box based on a gradient flow guide structure, which comprises a box body and a buffer structure, the box body is composed of a bottom wall, a side wall and a top cover, the bottom wall and the side wall are connected through a crease line, and the side wall and the top cover are connected through a crease line, the buffer structure is correspondingly embedded in the bottom of the inner cavity of the box body, and the free end of the top cover is provided with a bonding surface; the bottom wall comprises a first base material layer and a flow guide grid from top to bottom, the flow guide grid is correspondingly arranged on the upper surface of the first base material layer, and the flow guide grid is a V-shaped convex rib arranged in parallel; a tapered flow guide through hole is formed in the bottom between two adjacent V-shaped convex ribs along the length direction of the bottom, and the tapered flow guide through hole is arranged in a structure with a narrow upper part and a wide lower part; a water collecting groove is formed at the corresponding position between the first base material layer and each V-shaped convex rib, and the tapered flow guide through hole is in communication with the water collecting groove; opposite two side walls in a vertical relationship with the water collecting groove are both provided with a water outlet channel, both ends of each water collecting groove are in communication with the water outlet channel, the side walls on opposite sides are both provided with a side water drainage hole, and the water outlet channel is in communication with the side water drainage hole through an inclined channel; the outer surface of the V-shaped convex rib is coated with a nanoscale hydrophobic coating; the hole wall of the tapered flow guide through hole is coated with a super-hydrophobic ceramic layer; the upper part of the water collecting groove is covered with a degradable hydrophobic film layer, and the lower part of the water collecting groove is embedded with a water squeezing layer; the position of the water outlet channel corresponds to the water squeezing layer.

[0005] The buffer structure comprises a bionic rhombic lining and a degradable filling layer embedded in the gap of the bionic rhombic lining.

[0006] The side wall comprises a second base material layer, a hydrophobic coating layer and a moisture-proof film layer from inside to outside.

[0007] The inner surface of the top cover is fixedly connected with a honeycomb-shaped mildew-proof module, the honeycomb-shaped mildew-proof module is embedded with silica gel drug-loaded particles containing 5%-10% p-nitrobenzaldehyde, and the surface of the particles is coated with a PLA sustained-release film.

[0008] The outer surface of the side wall is printed with a biological material recycling identification layer.

[0009] Preferably, the rib height of the V-shaped convex rib is 1.5 mm, the rib width is 2 mm, and the rib spacing is 3 mm; the upper hole diameter of the tapered flow guide through hole is 0.5 mm, and the lower hole diameter is 2 mm.

[0010] Preferably, the biological material recycling identification layer is made of water-based ink and sugarcane residue fibers.

[0011] Preferably, the water collecting groove is a rectangular cross-section groove with a groove depth of 2 mm and a groove width of 8 mm.

[0012] Preferably, a plurality of guide grooves are provided on the surface of the V-shaped convex rib, and the guide grooves form an inclination angle of 10° with the vertical direction of the conical guide hole.

[0013] Preferably, the squeezing layer is configured as a composite material layer of diatomaceous earth and polylactic acid, which expands to fill 30%-50% of the volume of the water collecting tank when the ambient humidity is greater than 65% RH.

[0014] Preferably, the degradable filling layer is configured as bagasse filling blocks.

[0015] Preferably, the second substrate layer is molded from bagasse / bamboo fiber; the hydrophobic coating is configured to be an array of conical micro-convex structures formed by spraying a nano-silica solution, with a contact angle ≥150°; the moisture-proof film layer is hot-pressed by an aluminum-plastic composite film, and the surface of the film is provided with obliquely penetrating air-conducting micropores, with the pore axis and the film plane having an angle of 30°-60°.

[0016] Preferably, the surface of the water collection tank is hot-pressed with a polylactic acid modified hydrophobic film with a thickness of 0.15 mm and a melt index of 5 g / 10 min. The polylactic acid modified hydrophobic film is doped with 3%-5% nano-silicon dioxide particles with a particle size of 50-100 nm, which are uniformly dispersed in the membrane matrix.

[0017] Preferably, the PLA sustained-release membrane has a thickness of 0.05-0.1 mm, and micropores are provided on the membrane surface with a pore diameter of 0.1-0.3 μm.

[0018] The beneficial effects of the present invention are: by arranging V-shaped ribs, conical diversion holes and water collection troughs to form a gradient diversion structure and a system design of bio-based functional materials, the drainage efficiency is improved and the moisture-proof time is extended. The overall material degradation rate is greater than 90% within 180 days, and the recycling energy consumption is reduced by 85%, which is in line with the concept of environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional view of the present invention.

[0020] Figure 2 This is a cross-sectional view of the bottom wall.

[0021] Figure 3 Schematic diagram of the buffer structure.

[0022] Figure 4 It is a side wall cross-sectional view.

[0023] Figure 5 Schematic diagram of the top cover.

[0024] The reference signs are: side wall 10, bottom wall 11, top cover 12, buffer structure 13, side drainage hole 14, bonding surface 15, first base material layer 18, flow guide grid 16, tapered flow guide through hole 17, water squeezing layer 19, water collecting groove 20, polylactic acid modified hydrophobic film 21, degradable hydrophobic film layer 22, silica gel drug-loaded particles 23, degradable filling layer 24, second base material layer 25, hydrophobic coating layer 26, moisture-proof film layer 27, biomimetic rhombic inner liner 28, honeycomb-shaped mildew-proof module 29. DETAILED DESCRIPTION

[0025] In order to further understand the features, technical means and specific purposes and functions achieved by the present application, the present application will be described in further detail below in conjunction with the specific embodiments and drawings.

[0026] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above-mentioned terms in the present application can be understood according to the specific circumstances.

[0027] Please refer to Figures 1-5 The gradient flow structure based biological moisture-proof express box shown in the figure, including box body and buffer structure 13, the box body is composed of bottom wall 11, side wall 10 and top cover 12, the bottom wall 11 and the side wall 10 are connected by folding through crease line, the side wall 10 and the top cover 12 are connected by folding through crease line, the buffer structure 13 is correspondingly embedded and arranged at the bottom of the inner cavity of the box body; the free end of the top cover 12 is formed with a bonding surface 15.

[0028] The bottom wall 11 comprises a first substrate layer 18 and a flow guide grid 16 from top to bottom. The flow guide grid 16 is arranged on the upper surface of the first substrate layer 18. The flow guide grid 16 is a V-shaped convex rib arranged in parallel. The rib height of the V-shaped convex rib is 1.5 mm, the rib width is 2 mm, and the rib spacing is 3 mm. The upper aperture of the tapered flow guide through hole 17 is 0.5 mm, and the lower aperture is 2 mm. The bottom between the two adjacent V-shaped convex ribs is provided with a tapered flow guide through hole 17 along the length direction. The tapered flow guide through hole 17 is arranged in a narrow upper and wide lower structure. The surface of the V-shaped convex rib is provided with a plurality of flow guide grooves. The vertical direction of the flow guide groove and the tapered flow guide through hole 17 forms an inclination angle of 10°. The first substrate layer 18 and the corresponding position between each V-shaped convex rib are provided with a water collecting groove 20. The water collecting groove 20 is arranged as a rectangular cross-section groove with a groove depth of 2 mm and a groove width of 8 mm. The surface of the water collecting groove 20 is hot-pressed with a polylactic acid modified hydrophobic film 21 with a film thickness of 0.15 mm and a melt index of 5 g / 10 min. The polylactic acid modified hydrophobic film 21 is doped with 3%-5% nano silicon dioxide particles with a particle size of 50-100 nm uniformly dispersed in the film matrix. The tapered flow guide through hole 17 is in communication with the water collecting groove 20. The opposite two side walls 10 in vertical relationship with the water collecting groove 20 are provided with water outlet channels. The two ends of each water collecting groove 20 are in communication with the water outlet channels. The opposite two side walls 10 are provided with side drainage holes 14. The water outlet channels are in communication with the side drainage holes 14 through inclined channels. The outer surface of the V-shaped convex rib is coated with a nano-scale hydrophobic coating to produce a super-hydrophobic effect. The liquid drop rolling speed is ≤0.5 s, and the surface residual rate is <3%. The hole wall of the tapered flow guide through hole 17 is coated with a super-hydrophobic ceramic layer. The upper part of the water collecting groove 20 is covered with a degradable hydrophobic film layer 22. The nano-particle reinforced film has high density and a melt index of 5 g / 10 min to ensure the hot-pressing strength. The lower part of the water collecting groove 20 is embedded with a water squeezing layer 19. The position of the water outlet channel corresponds to the water squeezing layer 19. The water squeezing layer 19 is made of diatomite and polylactic acid composite material. When the environmental humidity is >65% RH, the water squeezing layer 19 expands to fill 30%-50% of the volume of the water collecting groove 20. The diatomite microporous material absorbs moisture and expands to squeeze the water in the water collecting groove to be discharged in a directional manner.

[0029] The buffer structure 13 comprises a bionic rhombic lining 28 and a degradable filling layer 24 embedded in the gap of the bionic rhombic lining 28. The degradable filling layer 24 is made of sugarcane residue filling block. Agricultural waste is recycled. The density is 0.15 g / cm 3 Reduce the transportation burden.

[0030] The side wall 10 comprises, from inside to outside, a second base material layer 25, a hydrophobic coating layer 26 and a moisture-proof film layer 27; the second base material layer 25 is formed by molding sugarcane residue / bamboo fiber; the hydrophobic coating layer 26 is arranged to be formed into an array of conical micro-convex structures by spraying a nano-silicon dioxide solution, and the contact angle is greater than or equal to 150 degrees; and the moisture-proof film layer 27 is formed by hot pressing an aluminum-plastic composite film, and inclined gas guiding micropores are arranged on the film surface, and the angle between the pore axis and the film plane is 30-60 degrees. The inclined pores prevent liquid water from penetrating, and the hydrophilic resin guides water vapor.

[0031] The inner surface of the top cover 12 is fixedly connected with a honeycomb-shaped mildew-proof module 29, the honeycomb-shaped mildew-proof module 29 is embedded with silica gel drug-loaded particles 23 containing 5%-10% of p-nitrobenzaldehyde, the surface of the particles is coated with a PLA slow-release film, the PLA film micropores control the slow release of the drug, and the nano-silver coating cooperates to inhibit bacteria. The thickness of the PLA slow-release film is 0.05-0.1 mm, micropores are arranged on the surface of the film, and the pore size is 0.1-0.3 microns.

[0032] A bio-based material recycling identification layer is printed on the outer surface of the side wall 10, which dissolves to release amylase catalyst when encountering water, thereby accelerating material degradation. The bio-based material recycling identification layer is made of water-based ink and sugarcane residue fiber.

[0033] In the embodiment, the gradient flow guiding structure and the system design of the bio-based functional material are formed by arranging V-shaped ribs, tapered flow guiding through holes and water collecting grooves, so that the drainage efficiency is improved, the moisture-proof duration is prolonged, the overall material degradation rate is greater than 90% after 180 days, the recycling energy consumption is reduced by 85%, and the environmental protection concept is met.

[0034] The production process steps of the present application are as follows:

[0035] S1. Raw material pretreatment: making sugarcane residue / bamboo fiber base material layer, hydrophobic film / water extraction layer;

[0036] S2. Box structure molding:

[0037] 1. Flow guiding grid 16 manufacturing: mold pre-engraving V-shaped groove, laying sugarcane residue / bamboo fiber + PLA mixed material, hot pressing;

[0038] 2. Tapered flow guiding through hole 17 manufacturing: laser drilling, inner wall plasma spraying hydrophobic ceramic;

[0039] 3. Water collecting groove 20 manufacturing: mold pre-embedding rectangular convex mold, groove bottom embedding diatomite-PLA water extraction layer;

[0040] S3. Flow guiding structure finishing:

[0041] 1. Nano-hydrophobic coating manufacturing: nano-SiO2 solution spraying -> 120 DEG C curing -> forming conical micro-convex array;

[0042] 2. Moisture-proof film production: aluminum-plastic film hot pressing, 30° inclined laser punching, and hydrophilic resin coating;

[0043] 3. PLA modified hydrophobic film production: PLA / nano-SiO2 co-extrusion film forming, hot pressing on the surface of the water collecting tank;

[0044] S4. Functional layer compounding:

[0045] 1. Honeycomb-shaped mold-resistant module 29 production: drug-loaded particles fluidized bed coating PLA slow-release film, embedded in the honeycomb frame, and hot melt fixed on the top cover;

[0046] 2. Buffer structure 13 production: bionic rhombic lining die forming, gap filling with bagasse block;

[0047] 3. Bio-based material recycling identification layer production: water-based ink + bagasse fiber printing → UV curing.

[0048] 4. Artificial climate box curing: temperature 25℃±2℃, humidity 50%RH environment for 24h.

[0049] S5. Intelligent module embedding;

[0050] S6. Post-processing and quality inspection.

[0051] The above-described embodiments only express one embodiment of the present application, and the description is more specific and detailed, but it cannot be understood as limiting the scope of the present patent. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the scope of the present application. Therefore, the protection scope of the present patent should be subject to the appended claims.

Claims

1. A bio-based moisture-proof express box based on a gradient diversion structure, comprising a box body and a buffer structure (13), wherein the box body is composed of a bottom wall (11), a side wall (10), and a top cover (12), wherein the bottom wall (11) and the side wall (10) are folded and connected by a crease line, and the side wall (10) and the top cover (12) are folded and connected by a crease line, and the buffer structure (13) is correspondingly arranged in an embedded manner at the bottom of the inner cavity of the box, and the free end of the top cover (12) is formed with a bonding surface (15), characterized in that: The bottom wall (11) comprises a first substrate layer (18) and a guide grid (16) from top to bottom, wherein the guide grid (16) is correspondingly arranged on the upper surface of the first substrate layer (18), and the guide grid (16) is a V-shaped rib arranged in parallel; a conical guide hole (17) is provided at the bottom between two adjacent V-shaped ribs along the length direction thereof, and the conical guide hole (17) is configured as a structure that is narrow at the top and wide at the bottom; a water collecting trough (20) is provided at a position corresponding to between the first substrate layer (18) and each of the V-shaped ribs, and the conical guide hole (17) is connected to the water collecting trough (20); two opposite sides forming a vertical relationship with the water collecting trough (20) are provided. The side walls (10) are each provided with a water outlet channel, and the water outlets at both ends of each water collecting trough (20) are both communicated with the water outlet channel, and the side walls (10) on opposite sides are each provided with a side drainage hole (14), and the water outlet channel is communicated with the side drainage hole (14) through an inclined channel; the outer surface of the V-shaped rib is coated with a nano-scale hydrophobic coating; the hole wall of the conical diversion hole (17) is coated with a super-hydrophobic ceramic layer; the upper part of the water collecting trough (20) is covered with a degradable hydrophobic film layer (22), and the lower part of the water collecting trough (20) is embedded with a water squeezing layer (19); the position of the water outlet channel corresponds to the water squeezing layer (19); The buffer structure (13) comprises a bionic diamond-shaped lining (28) and a degradable filling layer (24) embedded in the gap of the bionic diamond-shaped lining (28); The side wall (10) comprises, from the inside to the outside, a second substrate layer (25), a hydrophobic coating layer (26) and a moisture-proof film layer (27); The inner surface of the top cover (12) is fixedly connected with a honeycomb anti-mildew module (29), wherein the honeycomb anti-mildew module (29) is embedded with silica gel drug-loaded particles (23) containing 5%-10% p-nitrobenzaldehyde, and the surface of the particles is coated with a PLA slow-release film; The outer surface of the side wall (10) is printed with a bio-based material recycling identification layer.

2. The bio-based moisture-proof express box based on a gradient flow-guiding structure according to claim 1, characterized in that: The rib height of the V-shaped convex rib is set to 1.5 mm, the rib width is set to 2 mm, and the rib spacing is set to 3 mm; the upper aperture of the tapered guide hole (17) is set to 0.5 mm, and the lower aperture is set to 2 mm.

3. The bio-based moisture-proof express box based on a gradient flow-guiding structure according to claim 1, characterized in that: The bio-based material recycling identification layer is made of a composite of water-based ink and bagasse fiber.

4. The bio-based moisture-proof express box based on a gradient flow-guiding structure according to claim 1, characterized in that: The water collecting trough (20) is configured as a rectangular cross-section groove with a groove depth of 2 mm and a groove width of 8 mm.

5. The bio-based moisture-proof express box based on a gradient flow-guiding structure according to claim 1, characterized in that: The surface of the V-shaped convex rib is provided with a plurality of guide grooves, and the guide grooves form an inclination angle of 10° with the vertical direction of the conical guide flow hole (17).

6. The bio-based moisture-proof express box based on a gradient flow-guiding structure according to claim 1, characterized in that: The squeezing layer (19) is configured as a composite material layer of diatomaceous earth and polylactic acid, and expands to fill 30%-50% of the volume of the water collecting tank (20) when the ambient humidity is greater than 65% RH.

7. The bio-based moisture-proof express box based on a gradient flow-guiding structure according to claim 1, characterized in that: The degradable filling layer (24) is configured as bagasse filling blocks.

8. The bio-based moisture-proof express box based on a gradient flow-guiding structure according to claim 1, characterized in that: The second substrate layer (25) is molded from bagasse / bamboo fiber; the hydrophobic coating (26) is configured to be an array of conical micro-convex structures formed by spraying a nano-silicon dioxide solution, with a contact angle of ≥150°; the moisture-proof film layer (27) is formed by hot-pressing an aluminum-plastic composite film, and the film surface is provided with obliquely penetrating air-conducting micropores, with the angle between the pore axis and the film plane being 30°-60°.

9. The bio-based moisture-proof express box based on a gradient flow-guiding structure according to claim 1, characterized in that: The surface of the water collecting tank (20) is hot-pressed with a polylactic acid modified hydrophobic film (21) with a thickness of 0.15 mm and a melt index of 5 g / 10 min. The polylactic acid modified hydrophobic film (21) is doped with 3%-5% nano-silicon dioxide particles with a particle size of 50-100 nm and is uniformly dispersed in the film matrix.

10. The bio-based moisture-proof express box based on a gradient flow-guiding structure according to claim 1, characterized in that: The PLA sustained-release membrane has a thickness of 0.05-0.1 mm and micropores are provided on the membrane surface with a pore diameter of 0.1-0.3 μm.

Images