Preparation process and application of novel breathable invisible underwear

Abstract

The invention discloses a preparation process and application of novel breathable invisible underwear, and relates to the technical field of underwear. The preparation process comprises the following steps: selecting high-viscosity and high-thixotropy organic silicon gel as a raw material of the self-adhesive layer of the underwear; automatic dispensing equipment is adopted for carrying out lineation type dispensing on the surface of the underwear, so that the organosilicone gel is distributed on the surface of the underwear in a preset line form; feeding the underwear subjected to adhesive dispensing into curing equipment, and performing primary curing treatment under a preset temperature condition, so that the organic silicon gel forms an adhesive layer with stable adhesive property; and after the cured underwear is cooled to normal temperature, a transparent protective film is attached to the self-adhesive layer on the surface of the underwear. The invention further provides the novel breathable invisible underwear manufactured through the manufacturing process. According to the preparation process and application of the novel breathable invisible underwear, the preparation efficiency is improved, and the breathability of the underwear is improved when the preparation process is used for replacing manual glue layer brushing in a traditional preparation process.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of underwear, in particular to a preparation process and application of a new breathable invisible underwear. BACKGROUND

[0002] The preparation process of the existing invisible underwear has many technical bottlenecks in the self-adhesive layer construction link. The self-adhesive layer generally uses condensation type silicone as raw material and is constructed by manual brushing process. Due to the limitations of the flowability and curing characteristics of the condensation type silicone, it needs to be brushed for multiple times (usually three times) to reach the preset thickness, and the entire adhesive layer construction period is as long as dozens of hours. Manual operation not only depends on the experience of workers, but also cannot guarantee the uniformity of the adhesive layer thickness, and the product consistency is poor; at the same time, multiple brushing and long curing time result in extremely low production efficiency, limited daily output, and completely unable to meet the continuous production needs of large-scale orders; in addition, the condensation type glue will produce intermediate products such as methanol during the curing process, which affects the workshop environment; in order to ensure self-adhesion and workability, the condensation type silicone needs to be manually brushed to cover the entire bonding area of the underwear, which will seriously affect the breathability of the underwear and the wearing comfort. SUMMARY

[0003] The purpose of the present application is to provide a preparation process and application of a new breathable invisible underwear, which is used to replace the manual brushing of the adhesive layer in the traditional preparation process, improve the preparation efficiency, and improve the breathability of the underwear.

[0004] In order to achieve the above purpose, the present application provides the following technical scheme: A preparation process of a new breathable invisible underwear, comprising: S1: selecting high viscosity and high thixotropy organic silicone gel as the raw material of the self-adhesive layer of the underwear; S2: using an automatic dispensing equipment, setting a line drawing path according to the three-dimensional contour data of the surface of the underwear, and performing line drawing type dispensing on the area of the surface of the underwear where self-adhesion is needed, so that the organic silicone gel is distributed on the surface of the underwear in the form of a preset line; S3: sending the underwear after dispensing into a curing equipment to perform a curing treatment under a preset temperature condition, so that the organic silicone gel forms an adhesive layer with stable bonding performance; S4: after the curing of the underwear, cooling it to room temperature, and bonding a transparent protective film on the self-adhesive layer on the surface of the underwear to obtain a new breathable invisible underwear finished product.

[0005] Optionally, the high viscosity and high thixotropy organic silicone gel in S1 meets the following conditions: it has no dripping characteristics at room temperature, can realize controllable extrusion under external force, quickly restores high viscosity to maintain the line form after the external force is removed, and has no volatile substance residue after curing.

[0006] Optionally, the automatic dispensing equipment in S2 includes a 3D scanning module, a path planning module, and a dispensing execution module; the 3D scanning module is used to scan the surface of the underwear to obtain three-dimensional contour data, the path planning module sets a marking path according to the three-dimensional contour data and the breathable structure distribution of the underwear, and the dispensing execution module completes the marking-style dispensing according to the set path.

[0007] Optionally, the shape of the marked path is one or more combinations of mesh, strip, or dot, and gaps are maintained between adjacent lines. These gaps are connected to the breathable structure of the underwear itself, forming a continuous breathable channel.

[0008] Optionally, the curing equipment in S3 is a high-temperature tunnel oven, which is equipped with a preheating zone, a curing zone and a cooling zone. The underwear passes through the preheating zone, curing zone and cooling zone in sequence to achieve gradual fixation and stable shaping of the adhesive layer, and no harmful gases are generated during the curing process.

[0009] Optionally, the transparent protective film in S4 is an anti-stick transparent film, the material of which is PET or PE, and it can be peeled off without damage after being applied, leaving no residue or damage on the surface of the self-adhesive layer after peeling.

[0010] A novel breathable invisible underwear, which is prepared by the above-mentioned manufacturing process.

[0011] Compared with existing technologies, the manufacturing process and application of the novel breathable invisible underwear provided by this invention utilizes 3D automatic dispensing equipment and a high-temperature tunnel oven to achieve dispensing and adhesive curing, replacing traditional manual brushing. This effectively improves work efficiency, and the adhesive layer application only requires one dispensing and one curing step, compared to the existing process of three brushings and multiple curings. This shortens the production cycle, increases daily output, and is conducive to meeting the needs of large-scale industrial production. In addition, the high-viscosity, high-thixotropic silicone gel used in this process does not produce any volatile harmful gases (such as methanol) during the curing process. There is no need to install a complex waste gas treatment system in the workshop, which effectively reduces production energy consumption and costs, and avoids the damage of harmful gases to equipment, the environment, and the health of operators. This process uses "line-marking dispensing" instead of the traditional "full-surface coating": the adhesive layer is distributed in lines or dots, with gaps between adjacent adhesive layers. The breathability is significantly improved compared to existing full-surface coating products, greatly improving breathability and wearing comfort. Attached Figure Description

[0012] Figure 1 A flowchart illustrating the manufacturing process of the novel breathable invisible underwear provided in this embodiment of the invention; Figure 2 This is a schematic diagram of the dispensing and marking path in the preparation process provided in this embodiment of the invention.

[0013] Figure label: 100 - Underwear; 1 - Marking path; 2 - Mold. Detailed Implementation

[0014] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0015] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0016] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. "Several" means one or more, unless otherwise explicitly specified.

[0017] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this 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 this invention.

[0018] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0019] Firstly, please refer to Figure 1 and Figure 2 The manufacturing process of the novel breathable invisible underwear 100 (hereinafter referred to as underwear) provided in this embodiment of the invention includes: S1: High-viscosity, high-thixotropic silicone gel is selected as the raw material for the self-adhesive layer of underwear 100; S2: Using an automatic dispensing device, the scribing path 1 is set according to the three-dimensional contour data of the surface of the underwear 100. The scribing dispensing is performed on the area of ​​the underwear 100 where self-adhesion is required, so that the silicone gel is distributed on the surface of the underwear 100 in a preset line shape. S3: The underwear 100 with the adhesive applied is sent into the curing equipment and cured once under the preset temperature conditions to form an adhesive layer with stable bonding properties from the silicone gel. S4: After the cured underwear 100 is cooled to room temperature, a transparent protective film is attached to the self-adhesive layer on its surface to obtain the new breathable invisible underwear 100 finished product.

[0020] Specifically, the high-viscosity, high-thixotropic silicone gel described in S1 satisfies the following characteristics: it has non-sagging properties at room temperature, can be extruded under external force, rapidly recovers its high viscosity to maintain its linear shape after the external force is removed, and leaves no volatile residues after curing. This ensures that the gel does not produce harmful gases such as methanol during the curing process, guaranteeing environmental friendliness and zero pollution.

[0021] In this application, the automatic dispensing equipment described in S2 includes a 3D scanning module, a path planning module, and a dispensing execution module. The 3D scanning module is used to scan the surface of the underwear 100 to obtain three-dimensional contour data. The path planning module sets a marking path 1 based on the three-dimensional contour data and the breathable structure distribution of the underwear 100. The dispensing execution module completes the marking-style dispensing according to the set path. The 3D automatic dispensing equipment can accurately plan the marking path 1 based on the three-dimensional contour of the underwear 100, keeping the glue line width and thickness errors within a very small range, effectively avoiding defects such as uneven glue layer and glue overflow caused by manual brushing. Simultaneously, the regular glue layer distribution and smooth film adhesion also contribute to a cleaner, more aesthetically pleasing, and more consistent product appearance.

[0022] In one embodiment provided in this application, the etched path 1 can be one or more combinations of mesh, strip, or dot pattern, designed to fit well against the body and prevent it from easily falling off. Gaps are maintained between adjacent lines, and these gaps communicate with the breathable structure of the underwear 100 itself, forming a continuous breathable channel. In this way, the adhesive layer is distributed in lines or dots, with gaps maintained between adjacent adhesive layers, and these gaps communicate with the breathable pores / fiber gaps of the underwear 100 substrate itself, forming a continuous breathable channel. This effectively avoids stuffiness and dampness, ensuring comfort even after prolonged wear, and solving the problem of the invisible underwear 100's inability to simultaneously achieve "self-adhesion" and "breathability."

[0023] Optionally, the curing equipment in S3 is a high-temperature tunnel oven, which is equipped with a preheating zone, a curing zone and a cooling zone. The underwear 100 passes through the preheating zone, the curing zone and the cooling zone in sequence to achieve gradual fixation and stable shaping of the adhesive layer, and no harmful gases are generated during the curing process.

[0024] Here, the temperature of the high-temperature tunnel oven is 100-140°C, and the curing time is 10-20 min. In this application, the preferred temperature is 120°C, and the preferred curing time is 15 min.

[0025] In this application, the transparent protective film described in S4 is an anti-stick transparent film. The transparent protective film is made of PET or PE and can be peeled off without damage after being applied. After peeling, there is no residue or damage on the surface of the self-adhesive layer. By setting the transparent protective film, dust can be effectively prevented from falling onto the adhesive layer of the underwear 100, ensuring the adhesiveness of the adhesive layer.

[0026] In practice: First, the substrate is fixed in a custom mold 2. A commercially available high-viscosity, high-thixotropic silicone gel is selected. The gel can be smoothly extruded under external force and immediately sets after the external force is removed. After curing, it becomes a transparent, elastic adhesive layer without volatile substances. Then, the substrate is scanned by the 3D laser scanning module of the automatic dispensing equipment to obtain the three-dimensional contour data of the substrate and the location distribution of the vents. The path planning module generates a mesh-like scribing path 1 based on the scan data—the spacing of the mesh lines matches the side length of the vents, ensuring that the lines avoid the vents and that the mesh gaps are connected to the vents. The dispensing pressure, speed, and needle are adjusted. The specifications are set so that the adhesive line width is the preset value. The dispensing equipment completes the dispensing of adhesive in the bonding area of ​​the underwear 100 according to the mesh path. The dispensed underwear 100 is then sent into a high-temperature tunnel oven: the temperature of the preheating zone is gradually increased so that the underwear 100 and the adhesive layer are heated gently; the curing zone maintains a suitable temperature so that the adhesive layer is fully cured; the cooling zone is cooled by ambient temperature air to set the adhesive layer. The entire tunnel oven processing time is set according to the thickness of the adhesive layer to ensure that the adhesive layer is completely cured and there is no deformation of the substrate; finally, a PET anti-stick transparent film is selected and precisely applied to the adhesive layer surface by a manual or automated film applicator to ensure that there are no bubbles or wrinkles.

[0027] Secondly, please refer to Figure 2 This application provides a novel breathable invisible underwear 100, which is prepared by the above-described preparation process.

[0028] As can be seen from the specific implementation process of the above preparation process, the use of 3D automatic dispensing equipment and high-temperature tunnel oven to achieve dispensing and curing of adhesive, replacing traditional manual brushing, effectively improves work efficiency. Moreover, the adhesive layer construction only requires one dispensing and one curing, compared with the existing process of three brushings and multiple curings, the production cycle is shortened and the daily output is increased, which is conducive to meeting the needs of large-scale industrial production. In addition, the high viscosity and high thixotropic silicone gel used in this process does not produce any volatile harmful gases (such as methanol) during the curing process. There is no need to install a complicated waste gas treatment system in the workshop, which effectively reduces production energy consumption and costs, and avoids the damage of harmful gases to equipment, environment and operator health. This process uses "line-marking dispensing" instead of the traditional "full-area coating": the adhesive layer is distributed in lines or dots, and gaps are left between adjacent adhesive layers. The air permeability is significantly improved compared with the existing full-area coating products, which greatly improves breathability and also improves wearing comfort.

[0029] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0030] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A process for the preparation of a new type of breathable invisible underwear characterized in that, The application relates to a preparation process of a new type of breathable invisible underwear. S1: selecting high-viscosity high-thixotropy silicone gel as raw material of a self-adhesive layer of underwear; S2: adopting an automatic dispensing equipment, setting a line drawing path according to three-dimensional contour data of a surface of the underwear, and performing line drawing type dispensing on an area of the surface of the underwear which needs to realize self-adhesion, so that the silicone gel is distributed on the surface of the underwear in a preset line form; S3: sending the underwear after the dispensing into a curing equipment to perform primary curing treatment under a preset temperature condition, so that the silicone gel forms a glue layer with stable bonding performance; S4: cooling the underwear after curing to normal temperature, and pasting a transparent protective film on the self-adhesive glue layer on the surface of the underwear, so that the new type of breathable invisible underwear product is obtained.

2. The manufacturing process according to claim 1, characterized in that, The high-viscosity high-thixotropy silicone gel in S1 meets the following requirements: the silicone gel has no dripping characteristics at normal temperature, can realize controllable extrusion under the action of external force, quickly restores high viscosity to maintain the line form after the external force is removed, and has no volatile substance residue after curing.

3. The manufacturing process of claim 1, wherein, The automatic dispensing equipment in S2 comprises a 3D scanning module, a path planning module and a dispensing execution module; the 3D scanning module is used for scanning the surface of the underwear to obtain three-dimensional contour data; the path planning module sets a line drawing path according to the three-dimensional contour data and the distribution of the breathable structure of the underwear; and the dispensing execution module completes line drawing type dispensing according to the set path.

4. The manufacturing process of claim 1, wherein, The form of the line drawing path is one or a combination of a mesh, a strip or a dot, and a gap is reserved between adjacent lines, the gap is communicated with the breathable structure of the underwear, and a continuous breathable channel is formed.

5. The manufacturing process of claim 1, wherein, The curing equipment in S3 is a high-temperature tunnel furnace, the high-temperature tunnel furnace is provided with a preheating zone, a curing zone and a cooling zone, the underwear passes through the preheating zone, the curing zone and the cooling zone in sequence, gradual fixing and stable setting of the glue layer are realized, and no harmful gas is generated in the curing process.

6. The manufacturing process of claim 1, wherein, The transparent protective film in S4 is a transparent film of the anti-adhesion type, the material of the transparent protective film is PET or PE, and the transparent protective film can be peeled off without damage after being pasted, and no glue residue and no damage are generated on the surface of the self-adhesive glue layer after peeling off.

7. Use of a new type of breathable invisible underwear, characterized in that, The new type of breathable invisible underwear is prepared by the preparation process in any one of claims 1-6.

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