Body-following anti-cracking breathable protection bag for grape bunches
By designing a built-in, crack-resistant, and breathable protective bag for grape bunches, the problem of poor air permeability in traditional bagging was solved, enabling healthy grape growth and pest control, and improving the preservation quality of grapes.
Patent Information
- Application Number
- CN202610078537.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-21
- Publication Date
- 2026-02-17
AI Technical Summary
Traditional grape bagging has poor air permeability, causing the grape skin temperature to rise sharply, which can easily lead to high-temperature scorching, accelerate fermentation and decay, and the rotting fruit attracts carrion insects, increasing losses.
A self-contained, crack-resistant, and breathable protective bag for grape bunches was designed. It is made of thin film material, with breathable membrane strips and arc-shaped pieces glued to the sides. The design incorporates breathable holes and modified plant powder to achieve selective breathability and insect repellency.
It effectively regulates the microclimate inside the bag, reduces fruit skin cracking, minimizes humidity fluctuations, repels insects, reduces the number of decaying insects in the orchard, and protects the healthy growth of grapes.
Smart Images
Figure CN121533290A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the technical field of fruit-in-body bags, specifically relating to a crack-resistant and breathable protective bag for grape bunches. Background Technology
[0002] In actual production, in order to prevent damage to grapes from pests and diseases, it is usually necessary to bag the grapes, especially in southern regions.
[0003] However, traditional bagging has poor air permeability. Under direct sunlight, the heat inside the bag is difficult to dissipate, easily causing a sharp rise in the temperature of the grape skin and resulting in heat scorching. This makes it unsuitable for grape-growing regions with large diurnal temperature variations. In addition, the continuous high temperature inside the bag accelerates the fermentation and decay of the grapes, and the rotting fruit attracts a large number of carrion insects to breed in the orchard, further increasing the loss of grapes. Summary of the Invention
[0004] The purpose of this invention is to provide a crack-resistant and breathable protective bag for grape bunches in order to solve the above-mentioned problems.
[0005] The present invention achieves the above objectives through the following technical solutions: This invention provides a body-integrated anti-crack and breathable protective bag for grape bunches. The body-integrated anti-crack and breathable protective bag includes a bag body 1, an opening 2 at the top of the bag body 1, through which grape bunches are inserted into the bag body 1, a drawstring 3 at the opening 2, and the drawstring 3 is used to close the opening 2 after the grape bunches are inserted into the bag body 1. A breathable membrane strip 4 is glued to the side of the bag body 1, and an arc-shaped piece 5 is provided at the bottom of the bag body 1. The arc-shaped piece 5 has a circular ventilation hole 6 for ventilation. The bag body 1 is made of film material through a casting film process, which involves melt extrusion, casting and cooling molding, and traction winding. The raw materials for preparing the film material, by weight, include: 55-65 parts PLA resin particles, 10-15 parts modified plant powder, 3-8 parts citrate ester and 5-10 parts carbodiimide.
[0006] As a further optimization of the present invention, the preparation process of the film material is as follows: PLA resin particles are crushed, passed through a 0.2 mm sieve, placed in a vacuum drying oven, and dried at 80°C for 20 min for later use; the dried PLA resin particles are mixed with citrate ester, stirred at 120 rpm for 5 min, modified plant powder and carbodiimide are added, and stirred at 120 rpm for 10 min to obtain the film material.
[0007] As a further optimization of the present invention, the preparation process of the modified plant powder is as follows: the silane coupling agent is dissolved in a 95% ethanol aqueous solution, stirred at 120 rpm for 5 min, the plant powder is added, and stirred at 60 rpm for 12-16 h to obtain a mixture. The mixture is dried at 80°C and pulverized through a 0.2 mm sieve to obtain the modified plant powder.
[0008] As a further optimization of the present invention, the raw materials for preparing the modified plant powder, by weight, include: 30-35 parts plant powder, 5-10 parts silane coupling agent and 50-75 parts 95% ethanol aqueous solution.
[0009] As a further optimization of the present invention, the silane coupling agent is KH-550.
[0010] As a further optimization of the present invention, the preparation process of the plant powder is as follows: Artemisia argyi and lemongrass leaves are pulverized into powder at 50-60℃ and passed through a 0.1mm sieve to obtain plant raw material base powder; sodium alginate is added to deionized water and stirred at 180rpm for 5min to obtain a transparent solution; montmorillonite is added to the transparent solution and stirred at 180rpm for 5min; plant raw material base powder is added and stirred at 120rpm for 10min to obtain a mixed slurry; the mixed slurry is dried by spray drying tower to obtain plant powder.
[0011] As a further optimization of the present invention, the raw materials for preparing the plant powder, by weight, include: 30-45 parts of Artemisia argyi, 25-35 parts of Lemongrass leaves, 6-12 parts of montmorillonite, 3-6 parts of sodium alginate and 50-75 parts of deionized water.
[0012] As a further optimization of the present invention, the edge 4 of the breathable membrane is a polytetrafluoroethylene microporous film.
[0013] As a further optimization of the present invention, the drawstring 3 is an elastic rubber band.
[0014] As a further optimization of the present invention, the thickness of the bag body 1 is 55 μm.
[0015] The beneficial effects of this invention are as follows: A breathable membrane strip is glued to the side of the bag. This breathable membrane strip is a polytetrafluoroethylene microporous film with a unique mesh-like microporous structure. The pore size is much smaller than a water droplet but much larger than a water vapor molecule, thus achieving excellent selective permeability. This increases breathability during grape bunch growth, continuously and evenly expelling the high-humidity, high-heat gases generated by respiration inside the bag while simultaneously introducing fresh external air. This effectively optimizes the microclimate environment inside the bag, reducing fruit peel cracking caused by drastic humidity changes and water droplet retention. Furthermore, insect-repellent modified plant powder is added to the film material used in the bag's processing. The plant powder in the film slowly releases natural insect-repellent components, creating a repellent environment inside the bag. Through the continuous release of effective components, it interferes with orchard decay insects laying eggs or feeding near the bag, effectively reducing the breeding population of orchard decay insects. Attached Figure Description
[0016] Figure 1 This is a plan view of the body-worn, crack-resistant, and breathable protective bag of the present invention; Figure 2 This is a three-dimensional view of the bottom arc-shaped plate of the body-worn, crack-resistant, and breathable protective bag of the present invention.
[0017] Figure Labels 1. Bag body; 2. Opening; 3. Drawstring; 4. Breathable membrane with edge; 5. Curved sheet; 6. Circular ventilation hole. Detailed Implementation
[0018] The present application will now be described in further detail. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.
[0019] I. Materials Unless otherwise specified, all methods used in this invention are conventional methods known to those skilled in the art, and all reagents and materials used are commercially available products.
[0020] In this invention, the breathable membrane with edges is a polytetrafluoroethylene microporous membrane, and the polytetrafluoroethylene microporous membrane is an E-PTFE microporous membrane produced by Shanghai Lingfulong Membrane Technology Co., Ltd. The drawstring is made of elastic rubber band.
[0021] Example 1 The body-worn, crack-resistant, and breathable protective bag includes a bag body 1, an opening 2 at the top of the bag body 1, a drawstring 3 at the opening 2, a breathable membrane strip 4 glued to the side of the bag body 1, an arc-shaped piece 5 at the bottom of the bag body 1, and a circular air vent 6 on the arc-shaped piece 5. The thickness of the bag body 1 is 55μm. The bag body 1 is made of film material through a casting film process, which involves melt extrusion, casting and cooling molding, and traction winding. The preparation process of the thin film material is as follows: 55 parts of PLA resin particles are crushed, passed through a 0.2 mm sieve, placed in a vacuum drying oven, and dried at 80°C for 20 min for later use; the dried PLA resin particles are mixed with 3 parts of citrate ester, stirred at 120 rpm for 5 min, 10 parts of modified plant powder and 5 parts of carbodiimide are added, and stirred at 120 rpm for 10 min to obtain the thin film material. The preparation process of modified plant powder is as follows: 5 parts of silane coupling agent KH-550 are dissolved in 50 parts of 95% ethanol aqueous solution, stirred at 120 rpm for 5 min, 30 parts of plant powder are added, stirred at 60 rpm for 12 h to obtain a mixture, the mixture is dried at 80℃ and pulverized through a 0.2 mm sieve to obtain modified plant powder; The preparation process of the plant powder is as follows: 30 parts of Artemisia argyi and 25 parts of Lemongrass leaves are pulverized into powder at 50℃ and passed through a 0.1mm sieve to obtain plant raw material base powder; 3 parts of sodium alginate are added to 50 parts of deionized water and stirred at 180 rpm for 5 min to obtain a transparent solution; 6 parts of methyl methacrylate are added to the transparent solution and stirred at 180 rpm for 5 min; the plant raw material base powder is added and stirred at 120 rpm for 10 min to obtain a mixed slurry; the mixed slurry is dried through a spray drying tower to obtain plant powder.
[0022] Example 2 The body-worn, crack-resistant, and breathable protective bag includes a bag body 1, an opening 2 at the top of the bag body 1, a drawstring 3 at the opening 2, a breathable membrane strip 4 glued to the side of the bag body 1, an arc-shaped piece 5 at the bottom of the bag body 1, and a circular air vent 6 on the arc-shaped piece 5. The thickness of the bag body 1 is 55μm. The bag body 1 is made of film material through a casting film process, which involves melt extrusion, casting and cooling molding, and traction winding. The preparation process of the thin film material is as follows: 60 parts of PLA resin particles are crushed, passed through a 0.2 mm sieve, placed in a vacuum drying oven, and dried at 80°C for 20 min for later use; the dried PLA resin particles are mixed with 5 parts of citrate ester, stirred at 120 rpm for 5 min, 12 parts of modified plant powder and 8 parts of carbodiimide are added, and stirred at 120 rpm for 10 min to obtain the thin film material. The preparation process of modified plant powder is as follows: 7 parts of silane coupling agent KH-550 are dissolved in 60 parts of 95% ethanol aqueous solution, stirred at 120 rpm for 5 min, 32 parts of plant powder are added, stirred at 60 rpm for 14 h to obtain a mixture, the mixture is dried at 80℃ and pulverized through a 0.2 mm sieve to obtain modified plant powder; The preparation process of the plant powder is as follows: 38 parts of Artemisia argyi and 30 parts of Lemongrass leaves are pulverized into powder at 55℃ and passed through a 0.1mm sieve to obtain plant raw material base powder; 5 parts of sodium alginate are added to 60 parts of deionized water and stirred at 180 rpm for 5 min to obtain a transparent solution; 9 parts of montmorillonite are added to the transparent solution and stirred at 180 rpm for 5 min; the plant raw material base powder is added and stirred at 120 rpm for 10 min to obtain a mixed slurry; the mixed slurry is dried through a spray drying tower to obtain plant powder.
[0023] Example 3 The body-worn, crack-resistant, and breathable protective bag includes a bag body 1, an opening 2 at the top of the bag body 1, a drawstring 3 at the opening 2, a breathable membrane strip 4 glued to the side of the bag body 1, an arc-shaped piece 5 at the bottom of the bag body 1, and a circular air vent 6 on the arc-shaped piece 5. The thickness of the bag body 1 is 55μm. The bag body 1 is made of film material through a casting film process, which involves melt extrusion, casting and cooling molding, and traction winding. The preparation process of the thin film material is as follows: 65 parts of PLA resin particles are crushed, passed through a 0.2 mm sieve, placed in a vacuum drying oven, and dried at 80°C for 20 min for later use; the dried PLA resin particles are mixed with 8 parts of citrate ester, stirred at 120 rpm for 5 min, 15 parts of modified plant powder and 10 parts of carbodiimide are added, and stirred at 120 rpm for 10 min to obtain the thin film material. The preparation process of modified plant powder is as follows: 10 parts of silane coupling agent KH-550 are dissolved in 75 parts of 95% ethanol aqueous solution, stirred at 120 rpm for 5 min, 35 parts of plant powder are added, stirred at 60 rpm for 16 h to obtain a mixture, the mixture is dried at 80℃ and pulverized through a 0.2 mm sieve to obtain modified plant powder. The preparation process of the plant powder is as follows: 45 parts of Artemisia argyi and 35 parts of Lemongrass leaves are pulverized into powder at 60℃ and passed through a 0.1mm sieve to obtain plant raw material base powder; 4 parts of sodium alginate are added to 75 parts of deionized water and stirred at 180 rpm for 5 min to obtain a transparent solution; 12 parts of montmorillonite are added to the transparent solution and stirred at 180 rpm for 5 min; the plant raw material base powder is added and stirred at 120 rpm for 10 min to obtain a mixed slurry; the mixed slurry is dried through a spray drying tower to obtain plant powder.
[0024] Comparative Example 1 The body-worn, tear-resistant, and breathable protective bag includes a bag body 1, an opening 2 at the top of the bag body 1, a drawstring 3 at the opening 2, a breathable membrane strip 4 glued to the side of the bag body 1, an arc-shaped piece 5 at the part of the bag body 1, and circular ventilation holes 6 on the arc-shaped piece 5. The thickness of the bag body 1 is 55μm. The bag body 1 is made of film material through a casting film process, which involves melt extrusion, casting and cooling molding, and traction winding. The preparation process of the thin film material is as follows: 60 parts of PLA resin particles are crushed, passed through a 0.2 mm sieve, placed in a vacuum drying oven, and dried at 80°C for 20 min for later use; the dried PLA resin particles are mixed with 5 parts of citrate ester, stirred at 120 rpm for 5 min, 12 parts of plant powder and 8 parts of carbodiimide are added, and stirred at 120 rpm for 10 min to obtain the thin film material. The preparation process of the plant powder is as follows: 38 parts of Artemisia argyi and 30 parts of Lemongrass leaves are pulverized into powder at 55℃ and passed through a 0.1mm sieve to obtain plant raw material base powder; 5 parts of sodium alginate are added to 60 parts of deionized water and stirred at 180 rpm for 5 min to obtain a transparent solution; 9 parts of montmorillonite are added to the transparent solution and stirred at 180 rpm for 5 min; the plant raw material base powder is added and stirred at 120 rpm for 10 min to obtain a mixed slurry; the mixed slurry is dried through a spray drying tower to obtain plant powder.
[0025] Comparative Example 2 The body-worn, crack-resistant, and breathable protective bag includes a bag body 1, an opening 2 at the top of the bag body 1, a drawstring 3 at the opening 2, a breathable membrane strip 4 glued to the side of the bag body 1, an arc-shaped piece 5 at the bottom of the bag body 1, and a circular air vent 6 on the arc-shaped piece 5. The thickness of the bag body 1 is 55μm. The bag body 1 is made of film material through a casting film process, which involves melt extrusion, casting and cooling molding, and traction winding. The preparation process of the thin film material is as follows: 60 parts of PLA resin particles are crushed, passed through a 0.2 mm sieve, placed in a vacuum drying oven, and dried at 80°C for 20 min for later use; the dried PLA resin particles are mixed with 5 parts of citrate ester, stirred at 120 rpm for 5 min, 12 parts of modified plant powder and 8 parts of carbodiimide are added, and stirred at 120 rpm for 10 min to obtain the thin film material. The preparation process of modified plant powder is as follows: 7 parts of silane coupling agent KH-550 are dissolved in 60 parts of 95% ethanol aqueous solution, stirred at 120 rpm for 5 min, 32 parts of plant powder are added, stirred at 60 rpm for 14 h to obtain a mixture, the mixture is dried at 80℃ and pulverized through a 0.2 mm sieve to obtain modified plant powder; The preparation process of the plant powder is as follows: 68 parts of Artemisia argyi floss are pulverized into powder at 55℃ and passed through a 0.1mm sieve to obtain plant raw material base powder; 5 parts of sodium alginate are added to 60 parts of deionized water and stirred at 180 rpm for 5 min to obtain a transparent solution; 9 parts of methyl methacrylate are added to the transparent solution and stirred at 180 rpm for 5 min; the plant raw material base powder is added and stirred at 120 rpm for 10 min to obtain a mixed slurry; the mixed slurry is dried through a spray drying tower to obtain plant powder.
[0026] Comparative Example 3 The body-worn, crack-resistant, and breathable protective bag includes a bag body 1, an opening 2 at the top of the bag body 1, a drawstring 3 at the opening 2, a breathable membrane strip 4 glued to the side of the bag body 1, an arc-shaped piece 5 at the bottom of the bag body 1, and a circular air vent 6 on the arc-shaped piece 5. The thickness of the bag body 1 is 55μm. The bag body 1 is made of film material through a casting film process, which involves melt extrusion, casting and cooling molding, and traction winding. The preparation process of the thin film material is as follows: 60 parts of PLA resin particles are crushed, passed through a 0.2 mm sieve, placed in a vacuum drying oven, and dried at 80°C for 20 min for later use; the dried PLA resin particles are mixed with 5 parts of citrate ester, stirred at 120 rpm for 5 min, 12 parts of modified plant powder and 8 parts of carbodiimide are added, and stirred at 120 rpm for 10 min to obtain the thin film material. The preparation process of modified plant powder is as follows: 7 parts of silane coupling agent KH-550 are dissolved in 60 parts of 95% ethanol aqueous solution, stirred at 120 rpm for 5 min, 32 parts of plant powder are added, stirred at 60 rpm for 14 h to obtain a mixture, the mixture is dried at 80℃ and pulverized through a 0.2 mm sieve to obtain modified plant powder; The preparation process of the plant powder is as follows: 68 parts of lemongrass leaves are pulverized into powder at 55℃ and passed through a 0.1mm sieve to obtain plant raw material base powder; 5 parts of sodium alginate are added to 60 parts of deionized water and stirred at 180 rpm for 5 min to obtain a transparent solution; 9 parts of montmorillonite are added to the transparent solution and stirred at 180 rpm for 5 min; the plant raw material base powder is added and stirred at 120 rpm for 10 min to obtain a mixed slurry; the mixed slurry is dried through a spray drying tower to obtain plant powder.
[0027] Comparative Example 4 The body-worn, crack-resistant, and breathable protective bag includes a bag body 1, an opening 2 at the top of the bag body 1, a drawstring 3 at the opening 2, a breathable membrane strip 4 glued to the side of the bag body 1, an arc-shaped piece 5 at the bottom of the bag body 1, and a circular air vent 6 on the arc-shaped piece 5. The thickness of the bag body 1 is 55μm. The bag body 1 is made of film material through a casting film process, which involves melt extrusion, casting and cooling molding, and traction winding. The preparation process of the thin film material is as follows: 72 parts of PLA resin particles are crushed, passed through a 0.2 mm sieve, placed in a vacuum drying oven, and dried at 80°C for 20 min for later use; the dried PLA resin particles are mixed with 5 parts of citrate ester, stirred at 120 rpm for 5 min, 8 parts of carbodiimide are added, and stirred at 120 rpm for 10 min to obtain the thin film material.
[0028] Performance testing (a) Tensile strength and nominal strain rate at break were tested for Examples 1-3 and Comparative Examples 1-3 in accordance with GB / T 10004-2020 "Plastic composite films and bags for food contact". The test results are shown in Table 1.
[0029] Table 1 As can be seen from Table 1, the tensile strength and nominal strain rate at break of the body-worn crack-resistant and breathable protective bags of Examples 1-3 are significantly better than those of Comparative Examples 1-3, indicating that their material formulation and process are more reasonable and can better balance strength and toughness.
[0030] (ii) The oxygen permeability and water vapor permeability of Examples 1-3 and Comparative Examples 1-3 were tested in accordance with GB / T 10004-2020 "Plastic Composite Films and Bags for Food Contact". The test results are shown in Table 2.
[0031] Table 2 As can be seen from Table 2, the oxygen and water vapor permeability of the body-worn anti-crack breathable protective bags in Examples 1-3 are both high. When used as outer covers for grape bunches, they have little impact on the growth of grape bunches and can also be used as sales packaging during the grape bunch harvesting and sales period.
[0032] (III) Experiment on insect attraction of fermented and rotten grape bunches Experimental conditions: Grape bunches that were ripe to the point of rotting and fermentation were placed in the body-worn crack-resistant and breathable protective bags prepared according to the methods of Example 2 and Comparative Examples 2-4, and placed on grape trellises. The number of carrion-eating insects kept in each group of body-worn crack-resistant and breathable protective bags was observed and recorded. The results are shown in Table 3.
[0033] Table 3 As can be seen from Table 3, the grape-integrated anti-crack and breathable protective bag of Example 2 can effectively reduce the number of carrion insects in the orchard, while the grape bunches in the grape-integrated anti-crack and breathable protective bags of Comparative Examples 2-4 will accumulate a large number of carrion insects after they rot and ferment.
[0034] The embodiments described above are merely examples 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 present invention. 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 modifications and improvements all fall within the scope of protection of the present invention.
Claims
1. A bag for protecting clusters of grapes from cracking and allowing air to pass through, characterized in that, The accompanying anti-cracking breathable protective bag comprises a bag body (1), an opening (2) is arranged at the top of the bag body (1), a closing rope (3) is arranged at the opening (2), a breathable film strip edge (4) is glued at the side of the bag body (1), and an arc-shaped sheet (5) is arranged at the bottom of the bag body (1), wherein the arc-shaped sheet (5) is provided with a circular breathable hole (6); The bag body (1) is made of a film material through a flow casting film process, i.e., melt extrusion, flow casting cooling forming and traction winding. The film material is prepared from the following raw materials by weight: 55-65 parts of PLA resin particles, 10-15 parts of modified plant powder, 3-8 parts of citrate and 5-10 parts of carbodiimide.
2. The cluster bag of claim 1, wherein, The preparation process of the film material is as follows: the PLA resin particles are crushed, sieved through a 0.2mm screen, dried in a vacuum drying box at 80℃ for 20min, and then prepared for use; the dried PLA resin particles are mixed with citrate, stirred at 120rpm for 5min, and then the modified plant powder and carbodiimide are added and stirred at 120rpm for 10min to obtain the film material.
3. The cluster bag of claim 2, wherein, The preparation process of the modified plant powder is as follows: the silane coupling agent is dissolved in 95% ethanol aqueous solution, stirred at 120rpm for 5min, and then the plant powder is added and stirred at 60rpm for 12-16h to obtain a mixture, which is dried at 80℃ and crushed through a 0.2mm screen to obtain the modified plant powder.
4. The cluster bag of claim 3, wherein, The preparation raw materials of the modified plant powder are as follows by weight: 30-35 parts of plant powder, 5-10 parts of silane coupling agent and 50-75 parts of 95% ethanol aqueous solution.
5. The cluster bag of claim 3, wherein, The silane coupling agent is KH-550.
6. The cluster bag of claim 4, wherein, The preparation process of the plant powder is as follows: the wormwood silk and citronella leaves are crushed into powder at 50-60℃, sieved through a 0.1mm screen to obtain a plant raw material base powder; sodium alginate is added to deionized water, stirred at 180rpm for 5min to obtain a transparent solution; menthol is added to the transparent solution, stirred at 180rpm for 5min, and then the plant raw material base powder is added and stirred at 120rpm for 10min to obtain a mixed slurry; the mixed slurry is dried through a spray drying tower to obtain the plant powder.
7. The cluster bag of claim 6, wherein, The preparation raw materials of the plant powder are as follows by weight: 30-45 parts of wormwood silk, 25-35 parts of citronella leaves, 6-12 parts of menthol, 3-6 parts of sodium alginate and 50-75 parts of deionized water.
8. The cluster bag of claim 1, wherein, The breathable film strip edge (4) is a polytetrafluoroethylene microporous film.
9. The cluster bag of claim 1, wherein, The closing rope (3) is an elastic rubber band.
10. The cluster bag of claim 1, wherein, The thickness of the bag body (1) is 55μm.