Construction method for supporting guide mark structure on inner side of umbrella cover

Abstract

The invention discloses a construction method for an umbrella cover inner side supporting guide mark structure, and relates to the technical field of umbrella cover inner side supporting guide mark construction. Customized release paper is prepared, hard PU resin is evenly coated on a groove texture form of a triangular sheet stapling plate of the release paper, hard resin with the thickness of 180-220 mm is coated on a groove part, the release paper passes through a temperature drying oven, and the release paper and the hard PU resin are dried to obtain the umbrella cover inner side supporting guide mark structure. The method comprises the following steps: uniformly coating a hard PU resin layer with a thickness of 28-32 mm, uniformly coating a hard PU resin layer with a thickness of 28-32 mm, carrying out curing at a curing temperature of 120-140 DEG C, passing through a temperature oven, carrying out curing at a curing temperature of 80-120 DEG C, uniformly coating a soft resin layer with a thickness of 48-52 mm on the soft resin layer, attaching a waterproof base fabric of the umbrella fabric, passing through a 40 m oven, and carrying out drying. And controlling the curing temperature to be 100-130 DEG C for curing. According to the method, it is ensured that the triangular stapling position local texture structure on the release paper can be completely transferred to the umbrella fabric cloth, guide marks exist all the time when an umbrella is repeatedly used, and the easy-to-fold effect is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of umbrella inner side support guide mark construction, and particularly relates to a construction method of umbrella inner side support guide mark structure. BACKGROUND

[0002] Umbrella is a necessary life supply for people to go out, in order to make the umbrella convenient to carry when not in use, many foldable umbrellas emerge as the times require.

[0003] However, due to the reasons of overall material and preparation process, the existing foldable umbrella, after being used, has the problem of messy umbrella surface when being folded. Whether it is a manual umbrella, an automatic umbrella or an electric umbrella, no matter whether the umbrella frame or the umbrella rib is a three-fold, a four-fold or a five-fold structure, the umbrella surface is difficult to fold according to the preset path in the folding process, and the user needs to manually arrange to roughly fold the umbrella surface. Such manual arrangement is not only inconvenient to operate and time-consuming, but also the arrangement effect is often poor, the umbrella surface is still messy, which affects the aesthetic degree of the umbrella, is not convenient for the umbrella to be neatly placed in the pocket or other storage space, and brings many troubles to the user, and therefore there is room for improvement. SUMMARY

[0004] The present application relates to the technical field of umbrella inner side support guide mark construction, and particularly relates to a construction method of umbrella inner side support guide mark structure.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme: A construction method of umbrella inner side support guide mark structure, comprising the following steps: Prepare suitable release paper, evenly coat hard PU resin on the groove texture form of the triangular piece subscription version of the release paper, coat 180-220mm thick hard resin on the groove part, pass through a temperature oven, control the curing temperature 120-140 DEG C to cure; On the basis of the hard PU resin, evenly coat a layer of 28-32mm thick soft resin coating, pass through a temperature oven, control the curing temperature 80-120 DEG C to cure; On the basis of the soft resin, evenly coat a layer of 48-52mm thick adhesive resin again, and paste the waterproof base cloth of the umbrella fabric, pass through a 40-meter oven, control the curing temperature 100-130 DEG C to cure; After cooling out of the oven, the waterproof base cloth is peeled off from the release paper surface, at this time the triangular subscription local texture structure on the release paper can be successfully transferred to the umbrella fabric cloth; Fabric into umbrella factory after big cutting, according to the triangular piece on the cloth three piece line is opened, door width 1.7 2 Cm three sections 56cm small width, then every small width two sides are neat and run line type; The edge is good every small width is cut, according to the size of specified umbrella size, control die cutting plate to the specified triangular line fabric realizes accurate alignment and cuts into triangular piece; The cutting triangular piece is combined, and the independent triangular piece is combined on the sewing machine to form eight umbrella surfaces; The umbrella surface and the umbrella frame are assembled together, the umbrella ball is sewn by hand, and the umbrella frame is fixed with the umbrella surface by needle thread; According to the local support texture structure of umbrella, the umbrella surface is neatly stacked according to the predetermined path.

[0006] The application further provides that the resin coating is applied by spraying, rolling or brushing, different application methods can produce different adhesion between the coating and the substrate, the adhesion is divided into 0-5 levels, and the smaller the adhesion level value, the better the adhesion between the coating and the substrate.

[0007] The application further provides that the adhesion is embodied by calculating the surface energy of the coating surface, and the surface energy calculation formula is: ; Wherein, The surface energy of the solid is; The surface tension of deionized water is 72.6, The apparent contact angle is measured by a contact angle tester.

[0008] The application further provides that the surface wettability of the solid resin is related to the surface rough structure; actually, for the liquid drop on the rough solid surface, due to the unevenness of the surface, part of the bubbles is usually trapped between the solid-liquid interface, that is, part of the contact is solid-liquid-gas three-phase contact; at this time, the shape of the pit has a great influence on the contact angle, with the increase of the micro-pore depth, the wetting depth of the liquid increases, and the wettability decreases.

[0009] The application further provides that the apparent contact angle calculation formula is: ; In the formula, The intrinsic contact angle represents the contact angle of the ideal smooth solid surface, and r is the roughness factor.

[0010] The application further provides that the apparent contact angle calculation formula is: , The ratio of the protruding solid area of the contact surface to the apparent contact area is, The liquid immersion depth in the pit is; The pit diameter is; For the pit spacing.

[0011] The application is further provided that the hard PU resin is first sprayed onto the surface of the release paper, and before spraying, the hard PU resin is diluted with warm water at 35-40 DEG C; during spraying, the spray gun is kept moving at a uniform speed, the distance between the spray gun and the surface of the release paper is 15-30 cm, and the angle is 90 DEG; after spraying, the recessed part of the release paper is treated by brushing, and before brushing, the recessed part is thoroughly cleaned to ensure that it is free of dust and oil stains, and the smooth surface is polished.

[0012] The application is further provided that the soft resin coating is applied to the surface of the hard PU resin by rolling brushing, the rolling brush is first cleaned with water to remove the floating hairs and then dried to ensure that the hairs are wet; during brushing, the rolling brush is kept rolling in the same direction to avoid snake-shaped or sliding movement, and the paint is initially distributed uniformly by rolling in a W shape; when the rolling brush reaches the joint part, it is pressed again with an empty roller to ensure that the surface is smooth and free of marks. The adhesive resin is sprayed onto the surface of the soft resin coating, and after spraying, the resin is evenly applied by brushing to ensure that the surface of the resin coating is smooth.

[0013] A computer device includes a memory, a processor, and a computer program stored on the memory and executable on the processor, and the processor implements the steps of the above method when executing the computer program.

[0014] A computer readable storage medium has a computer program stored thereon, and the computer program implements the steps of the above method when executed by a processor.

[0015] The application has the following beneficial effects: The construction method for the umbrella inner side support guide mark structure uniformly coats hard PU resin on the recessed texture form of the triangular piece positioning version of the release paper, uniformly coats a layer of soft resin coating on the basis of the hard PU resin, uniformly coats a layer of adhesive resin on the basis of the soft resin, and adheres the waterproof base cloth of the umbrella fabric, and after cooling in an oven, the waterproof base cloth and the release paper surface are peeled off, at this time, the triangular positioning local texture structure on the release paper can be successfully transferred to the umbrella fabric cloth; the operation method is simple, the production cost is low, the umbrella repeatedly uses the guide mark, and the easy folding effect is formed, and the convenience of umbrella folding and storage is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The application provides a working flow structure schematic diagram of the construction method for the umbrella inner side support guide mark structure. DETAILED DESCRIPTION

[0017] The technical solution of the application will be further described in detail below in combination with specific embodiments.

[0018] Embodiments of the present patent are described below in detail with reference to examples thereof illustrated in the accompanying drawings, wherein like or similar elements across the various figures are denoted by like or similar reference numerals, and any reference numeral can be referred to in its singular or plural form. The embodiments described below by reference to the drawings are exemplary only, and are merely intended to explain the present patent, and should not be understood as limiting the present patent.

[0019] Embodiment 1 Referring to Figure 1 A construction method for a support guide mark structure on the inner side of an umbrella surface includes the following steps: A customized release paper model is prepared, and a hard PU resin is uniformly applied on the groove texture pattern of the triangular piece positioning version of the release paper. The groove part is coated with a 180 mm thick hard resin. The hard PU resin is first sprayed onto the surface of the release paper. Before spraying, the hard PU resin is diluted with warm water at a temperature of 35-40°C. During the spraying process, the spray gun is kept moving at a uniform speed, the distance between the spray gun and the surface of the release paper is 15-30 cm, and the angle is 90°. After spraying, the groove part of the release paper is treated with brushing. Before brushing, the inside of the groove needs to be thoroughly cleaned to ensure that it is dust-free and oil-free. The smooth surface needs to be polished. The release paper is passed through a temperature oven, and the curing temperature is controlled at 120°C for curing. On the basis of the hard PU resin, a 28 mm thick soft resin coating is uniformly applied on the surface of the hard PU resin. The soft resin coating is applied on the surface of the hard PU resin by rolling. The rolling brush needs to be cleaned with water to remove the floating hairs and dried to ensure that the hairs are wet. When brushing, the rolling direction needs to be kept the same to avoid snake-shaped or sliding. The W-shaped rolling is used to initially distribute the paint evenly. When rolling to the joint part, an empty roller needs to be used for re-rolling to ensure that it is flat and has no marks. The release paper is passed through a temperature oven, and the curing temperature is controlled at 80°C for curing. On the basis of the soft resin, a 48 mm thick adhesive resin is uniformly applied again. The adhesive resin is sprayed on the surface of the soft resin coating by spraying. After spraying, the resin is evenly applied by brushing to ensure that the surface of the resin coating is flat and adheres to the waterproof base cloth of the umbrella fabric. The release paper is passed through a 40-meter oven, and the curing temperature is controlled at 100°C for curing. Embodiment 2 Referring to Figure 1 A construction method for a support guide mark structure on the inner side of an umbrella surface includes the following steps: Prepare a customized release paper model, evenly coat the hard PU resin on the groove texture pattern of the release paper's triangular piece subscription version, coat 200mm thick hard resin on the groove part, first spray the surface of the release paper with hard PU resin, dilute with 35-40℃ warm water before spraying, keep the spray gun moving at a uniform speed during spraying, the distance between the spray gun and the surface of the release paper is 15-30cm, the angle is 90°, after spraying, brush the groove part of the release paper, clean the inside of the groove thoroughly before brushing to ensure no dust and no oil stains, polish the smooth surface; pass through the temperature oven, control the curing temperature at 130℃ for curing; On the basis of the hard PU resin, evenly coat a layer of 30mm thick soft resin coating on the surface of the hard PU resin, the soft resin coating is coated on the surface of the hard PU resin by rolling brush, the rolling brush needs to be cleaned with water first and then dried to ensure that the bristles are wet; keep rolling in the same direction when brushing to avoid snake shape or sliding, first roll in W shape to make the coating evenly distributed; when rolling to the joint part, it needs to be pressed again with an empty roller to ensure smoothness without marks, pass through the temperature oven, control the curing temperature at 100℃ for curing; On the basis of the soft resin, evenly coat a layer of 50mm thick adhesive resin on the surface of the soft resin coating, the adhesive resin is sprayed on the surface of the soft resin coating by spraying, and then the resin is evenly spread by brushing to ensure that the surface of the resin coating is smooth and adheres to the waterproof lining of the umbrella fabric, pass through the 40m oven, control the curing temperature at 115℃ for curing; Example 3 Reference Figure 1 A construction method for umbrella inner side support guide mark structure, comprising the following steps: Prepare a customized release paper model, evenly coat the hard PU resin on the groove texture pattern of the release paper's triangular piece subscription version, coat 200mm thick hard resin on the groove part, first spray the surface of the release paper with hard PU resin, dilute with 35-40℃ warm water before spraying, keep the spray gun moving at a uniform speed during spraying, the distance between the spray gun and the surface of the release paper is 15-30cm, the angle is 90°, after spraying, brush the groove part of the release paper, clean the inside of the groove thoroughly before brushing to ensure no dust and no oil stains, polish the smooth surface; pass through the temperature oven, control the curing temperature at 130℃ for curing; On the basis of the hard PU resin, evenly coat a layer of 30mm thick soft resin coating on the surface of the hard PU resin, the soft resin coating is coated on the surface of the hard PU resin by rolling brush, the rolling brush needs to be cleaned with water first and then dried to ensure that the bristles are wet; keep rolling in the same direction when brushing to avoid snake shape or sliding, first roll in W shape to make the coating evenly distributed; when rolling to the joint part, it needs to be pressed again with an empty roller to ensure smoothness without marks, pass through the temperature oven, control the curing temperature at 100℃ for curing; On the basis of the soft resin, a 52mm-thick layer of adhesive resin is uniformly coated again, the adhesive resin is sprayed on the surface of the soft resin coating layer by spraying, and after spraying, the resin is evenly applied by brushing to ensure the surface of the resin coating layer is flat and adheres to the waterproof base cloth of the umbrella fabric, and then it is passed through a 40-meter oven to control the curing temperature at 130°C for curing. In the above embodiment, after cooling out of the oven, the waterproof base cloth is peeled off from the release paper surface, and at this time, the triangular subscription local texture structure on the release paper is successfully transferred to the umbrella fabric cloth. After the fabric enters the umbrella factory, it is cut into three small widths according to the triangular piece subscription line on the cloth, with a width of 1.7 2 cm, divided into three sections of 56cm, then the edges of each section are neatly trimmed and run the line to subscribe to the type; after the edges are trimmed, each section is cut according to the specified size of the umbrella, and the die-cutting plate is precisely positioned to the subscribed triangular line fabric to cut the triangular pieces into three pieces. The cut triangular pieces are combined, and each independent triangular piece is combined into eight pieces on a sewing machine to form an eight-piece umbrella surface; the umbrella surface and the umbrella stand are assembled together, the umbrella ball is sewn by hand, and the umbrella stand is fixed with the umbrella surface by sewing; according to the local support texture structure of the umbrella, the umbrella surface is neatly stacked according to the predetermined path for storage.

[0020] It is worth mentioning that the application method of the resin coating layer includes spraying, rolling and brushing, and different application methods can produce different adhesion between the coating layer and the substrate. The adhesion is divided into 0-5 levels, and the smaller the adhesion level value, the better the adhesion between the coating layer and the substrate.

[0021] In order to verify the performance of the resin coating layer formed on the surface of the release paper by different application methods, the following comparative test is carried out: The test is divided into three groups, each group uses the same concentration of resin solution, and the spraying, rolling and brushing methods are used to apply the resin on the surface of the same release paper, and the data of the formed coating layer is shown in Table 1: Table 1 Performance data of coating layer prepared by spraying, rolling and brushing Coating method Adhesion Water contact angle (degrees) Surface roughness (um) Surface energy (mj.m) Spraying 0 62.1 2.68 65.2 Rolling 1 64.8 2.18 63.9 Brushing 0 61.9 2.02 65.3 From the above data, it can be seen that the adhesion of the coating layer prepared by spraying and brushing is better, and the adhesion is 0 level; the adhesion of the coating layer prepared by rolling is second.

[0022] Within a certain thickness range, increasing the thickness of the coating layer will prolong the curing time, the leveling performance of the coating layer will be better, the number of internal defects of the coating layer will be reduced, the effective adhesion points and areas between the coating and the substrate will be increased, and the bonding strength of the coating layer will be increased. The thickness of the sprayed coating layer is the smallest, and the adhesion level is higher.

[0023] The present application adopts different coating methods in the coating of hard PU resin, soft resin and adhesive resin according to the performance differences of three different coating methods on release paper, fully gives the advantages of each method, ensures that the local texture structure of the triangular subscription position on the release paper can be completely transferred to the umbrella fabric piece, and improves the production quality of the umbrella.

[0024] The adhesion is embodied by calculating the surface energy of the coating surface, and the surface energy calculation formula is: ; Among them, is the solid surface energy; is the surface tension of deionized water, and the value is 72.6, is the apparent contact angle, and the apparent contact angle of the coating and the substrate is measured by a contact angle tester.

[0025] The wettability of the solid resin surface is related to the rough structure of the surface; in fact, for the droplet on the rough solid surface, due to the unevenness of the surface, part of the bubble will be trapped between the solid-liquid interface, that is, part of the contact will be solid-liquid-gas three-phase contact; At this time, the shape of the pit has a great influence on the contact angle, and with the increase of the depth of the micropore, the wetting depth of the liquid increases, and the wettability decreases.

[0026] In order to facilitate the calculation of the apparent contact angle, two calculation methods are provided: 1. The apparent contact angle calculation formula is represented as: ; In the formula, is the intrinsic contact angle, which represents the contact angle of the ideal smooth solid surface, and r is the roughness factor; 2. The apparent contact angle calculation formula is represented as: , is the ratio of the protruding solid area of the contact surface to the apparent contact area, is the wetting depth of the liquid in the pit; is the pit diameter; is the pit pitch, which can be calculated according to the parameters in actual application.

[0027] The number of particles protruding from the surface of the spray coating is relatively large, and the distribution is relatively uniform, and there is a micro-rough structure between the particles, and the surface rough structure is uniform. Due to the difference in coating method and the increase in coating thickness, the number and height of the protruding particles on the surface of the roll coating and brush coating coating are reduced, and the uniformity of the rough structure is reduced.

[0028] The roughness of the coating surface is greater, the pit depth is higher, and the water contact angle is larger for spraying and rolling. The roughness of the coating surface decreases, but the wetting angle increases for brushing. This can be explained by the free energy of the coating surface. The higher the surface energy of a general solid surface, the stronger the hydrophilicity of the surface. The surface energy of different coatings is similar. The surface energy of rolling is smaller than that of spraying, and the surface energy of spraying is smaller than that of brushing. The surface energy and the wetting property of the coating are consistent.

[0029] A computer device includes a memory, a processor, and a computer program stored on the memory and executable on the processor, and the processor implements the steps of the above method when executing the computer program.

[0030] A computer readable storage medium has a computer program stored thereon, and the computer program implements the steps of the above method when executed by a processor.

[0031] The above is only a preferred specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacements or changes to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, and all of them should be covered within the protection scope of the present application.

Claims

1. A method for constructing a guide mark structure for supporting the inner side of an umbrella canopy, characterized in that, Includes the following steps: Prepare a custom release paper model. Apply rigid PU resin evenly to the groove texture of the triangular positioning plate of the release paper. Apply 180-220mm thick rigid resin to the groove part. Then, pass it through a temperature oven and cure it at a temperature of 120-140℃. A layer of soft resin with a thickness of 28-32mm is evenly coated on the hard PU resin, and then cured in a temperature oven at a controlled curing temperature of 80-120℃. Apply a layer of 48-52mm thick viscous resin evenly on top of the soft resin, and attach it to the waterproof backing of the umbrella fabric. Then, cure it in a 40-meter oven at a controlled curing temperature of 100-130℃. After cooling in the oven, peel the waterproof base fabric from the release paper. At this point, the triangular positioning texture on the release paper can be successfully transferred to the umbrella fabric. After the fabric arrives at the umbrella factory, it undergoes large-scale cutting, and is then divided into three smaller sections according to the triangular marking lines on the roll of fabric, with a width of 1.7 meters. 2 The fabric is divided into three 56cm sections. Each section is then neatly edged and shaped. After edge-finishing, each section is cut into small pieces. The die-cutting plate is controlled to precisely align the fabric with the triangular lines to achieve the specified umbrella size. The cut triangular pieces are joined together, and eight of each individual triangular piece are combined on a sewing machine to form eight umbrella panels. The umbrella panels and the umbrella frame are assembled together, and the umbrella ball is sewn on by hand. The umbrella frame is then sewn to the umbrella panels with needle and thread. The umbrellas are neatly stacked and stored according to the local support texture structure of the umbrella, following a predetermined path.

2. The method for constructing a guide mark structure for supporting the inner side of an umbrella canopy according to claim 1, characterized in that, The resin coating can be applied by spraying, rolling, or brushing. Different application methods can result in different adhesion between the coating and the substrate. The adhesion is divided into 0-5 levels. The smaller the adhesion level, the better the adhesion between the coating and the substrate.

3. The method for constructing a guide mark structure for supporting the inner side of an umbrella canopy according to claim 2, characterized in that, The adhesion is reflected by calculating the surface energy of the coating surface, and the formula for calculating the surface energy is: ; in, It is the surface energy of a solid. The surface tension of deionized water is 72.

6. The apparent contact angle is determined using a contact angle meter.

4. The method for constructing a guide mark structure for supporting the inner side of an umbrella canopy according to claim 3, characterized in that, The wettability of solid resin surfaces is related to their surface roughness and structure. In fact, for droplets on rough solid surfaces, due to the unevenness of the surface, some air bubbles are usually trapped between the solid and liquid interfaces, resulting in partial solid-liquid-gas three-phase contact. At this time, the shape of the pit has a significant impact on the contact angle. As the depth of the micropores increases, the wetting depth of the liquid increases, and the wettability decreases.

5. A method for constructing a guide mark structure for supporting the inner side of an umbrella canopy according to claim 4, characterized in that, The formula for calculating the apparent contact angle is expressed as follows: In the formula, is the intrinsic contact angle, representing the contact angle of an ideal smooth solid surface, and r is the roughness factor.

6. The method for constructing a guide mark structure for supporting the inner side of an umbrella canopy according to claim 4, characterized in that, The formula for calculating the apparent contact angle is expressed as follows: , The ratio of the protruding solid area to the apparent contact area. The depth of the liquid wetting in the pit; The diameter of the pit; This represents the spacing between the pits.

7. The method for constructing a guide mark structure for supporting the inner side of an umbrella canopy according to claim 1, characterized in that, The rigid PU resin is first sprayed onto the surface of the release paper. Before spraying, it is diluted with warm water at 35-40℃. During the spraying process, the spray gun moves at a constant speed, with a distance of 15-30cm between the spray gun and the surface of the release paper and an angle of 90°. After spraying, the grooved parts of the release paper are treated with a brush. Before brushing, the inside of the grooves needs to be thoroughly cleaned to ensure that there is no dust or oil. Smooth surfaces need to be sanded.

8. A method for constructing a guide mark structure for supporting the inner side of an umbrella canopy according to claim 7, characterized in that, The soft resin coating is applied to the hard PU resin surface using a roller brush. The roller brush must first be cleaned with water to remove loose fibers and shaken dry to ensure the fibers are moist. When brushing, keep rolling in the same direction to avoid serpentine or slipping motions. First, roll in a W-shape to initially distribute the coating evenly. When rolling to the joint area, use an empty roller to press again to ensure a smooth and seamless finish. The viscous resin is sprayed onto the surface of the soft resin coating by spraying, and then brushed to spread the resin evenly to ensure a smooth resin coating surface.

9. A computer device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 8.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 8.

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