Process for producing a molded cup for a seamless bra

Abstract

The present application relates to the technical field of bra preparation, and particularly relates to a production process of a mold cup for a hidden bra, which comprises the following steps: flatly unwinding a connecting fabric for fitting an inner cup, coating a hot melt adhesive layer on one surface of the connecting fabric through a coating mechanism, coating a skin contact adhesive layer on the other surface of the connecting fabric after the hot melt adhesive layer is shaped and cooled; covering the inner cup side of the mold cup plate with the surface of the connecting fabric coated with the hot melt adhesive layer, covering the surface of the connecting fabric coated with the skin contact adhesive layer with a protective film, and then performing vacuum forming to form a finished mold cup plate; and cutting the finished mold cup plate to obtain a finished mold cup. The present application has the effects of not needing manual brushing and being capable of ensuring uniform coating of the mold cup adhesive layer.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bra preparation, in particular to a production process of a molded cup for a hidden bra. BACKGROUND

[0002] The hidden bra is also called self-adhesive bra, self-adhesive bra, magic bra, etc. The hidden bra mainly includes two molded cups and a front buckle connected between the two molded cups. In the prior art, the molded cup for the traditional hidden bra is made by molding, and then a glue layer is coated on the inner cup of the molded cup. After baking or natural curing, the product is completed by using a protective film. Since the shape of the molded cup for the hidden bra is usually bowl-shaped, manual brushing is required on the inner cup of the molded cup to ensure complete brushing and prevent damage to the molded cup. However, the manual brushing method has the following problems: 1. Under the premise of ensuring complete brushing, the production efficiency of manual brushing is low and the cost is high; 2. During manual brushing, the glue layer is prone to flow and accumulate in the middle of the inner cup due to the bowl-shaped molded cup and the smooth inner cup, resulting in uneven thickness of the glue layer on the edge and bottom of the molded cup after baking. It is urgent to solve. SUMMARY

[0003] In view of the above problems in the prior art, the present application provides a production process of a molded cup for a hidden bra, which does not require manual brushing and can ensure uniform coating of the glue layer on the molded cup.

[0004] The above application aims to achieve the following technical solutions:

[0005] A production process of a molded cup for a hidden bra, comprising the following steps:

[0006] The connecting fabric for the inner cup is flatly unwound, and a hot melt glue layer is coated on one surface of the connecting fabric by a coating mechanism. After the hot melt glue layer is formed and cooled, a skin-touching glue layer is coated on the other surface of the connecting fabric;

[0007] The side of the connecting fabric coated with the hot melt glue layer is covered with the side of the molded cup plate close to the inner cup, and the side of the connecting fabric coated with the skin-touching glue layer is covered with the protective film, and then the product molded cup plate is formed by vacuum forming;

[0008] The product molded cup plate is cut to obtain the finished product molded cup.

[0009] By adopting the technical scheme, during the vacuum forming, the connecting fabric is tightly attached to the mold cup plate according to the shape of the inner cup of the mold cup plate under the vacuum forming effect, and because high temperature is generated during the vacuum forming, the hot melt adhesive layer on the connecting fabric is in a molten state, so that the connecting fabric is connected to the mold cup plate, at the same time, the protective film is also tightly attached to the skin adhesive layer of the connecting fabric according to the shape of the inner cup of the mold cup plate under the vacuum forming effect, so that the protective film is bonded to the skin adhesive layer, and at the same time, the skin adhesive layer is baked, and the finished product mold cup plate is manufactured. Compared with the traditional production process, the skin adhesive layer is coated on the flat connecting fabric by the coating mechanism, and then the connection among the protective film, the connecting fabric and the mold cup plate is simultaneously completed by the vacuum forming effect, which can ensure uniform coating of the skin adhesive layer without manual brushing, and can improve the production quality and production efficiency of the finished product, and manual bonding of the protective film is not required, further improving the production efficiency.

[0010] In a preferred example, the protective film is made of a plastic hard sheet.

[0011] By adopting the technical scheme, the hardness of the plastic hard sheet is greater than that of the traditional protective film, so that when the plastic hard sheet contacts the skin adhesive layer, a gap for air to pass through is not easily generated between the two, which is more suitable for vacuum forming conditions, and the protective film, the connecting fabric and the mold cup plate can be connected and formed at one time in cooperation with the vacuum forming process, without subsequent manual bonding of the protective film, and the plastic hard sheet is not easy to generate burrs when the finished product mold cup plate is cut subsequently, further improving the production quality of the finished product.

[0012] In a preferred example, the mold cup plate is made of a breathable material.

[0013] By adopting the technical scheme, the mold cup plate made of a breathable material facilitates the connection between the connecting fabric and the mold cup plate during the vacuum forming.

[0014] In a preferred example, the connecting fabric is a cloth with elasticity and breathability.

[0015] By adopting the technical scheme, the connecting fabric with elasticity and breathability facilitates the close connection between the protective film and the connecting fabric during the vacuum forming.

[0016] In summary, the present application has at least one of the following beneficial technical effects:

[0017] 1. The skin-contact adhesive layer is applied to the flat connecting fabric by a coating mechanism. Then, the connection between the protective film, connecting fabric and mold cup plate is completed simultaneously by vacuum forming. This ensures that the skin-contact adhesive layer is evenly coated and does not require manual brushing, which can improve the production quality and efficiency of the finished product. Furthermore, it eliminates the need for manual bonding of the protective film, further improving production efficiency.

[0018] 2. When the rigid plastic sheet comes into contact with the skin-touch adhesive layer, it is not easy for air to pass through between the two, making it more suitable for vacuum forming. It can work with the vacuum forming process to connect the protective film, connecting fabric and mold cup plate in one step, eliminating the need for subsequent manual bonding of the protective film. Furthermore, when cutting the finished mold cup plate later, the rigid plastic sheet is less likely to produce burrs, further improving the production quality of the finished product. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the assembly relationship between the molded cup plate, the connecting fabric and the protective film in one embodiment of this application;

[0020] Figure 2 This is a schematic diagram of another assembly relationship between the molded cup plate, the connecting fabric and the protective film in one embodiment of this application;

[0021] Figure 3 This is a schematic diagram of the structure of the finished mold cup plate in one embodiment of this application.

[0022] Reference numerals: 1. Connecting fabric; 2. Hot melt adhesive layer; 3. Skin-touch adhesive layer; 4. Mold cup plate; 5. Inner cup; 6. Protective film. Detailed Implementation

[0023] The following description, in conjunction with the accompanying drawings, illustrates exemplary embodiments of this application, including various details to aid understanding. These should be considered merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this application. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description.

[0024] It should be noted that the terms "first," "second," etc., used in this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this disclosure described herein can be implemented in orders other than those illustrated or described herein. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this disclosure.

[0025] Furthermore, the term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article, unless otherwise specified, generally indicates that the preceding and following related objects have an "or" relationship.

[0026] The manufacturing process of a molded cup for an invisible bra according to this application is described below with reference to the accompanying drawings, including the following steps:

[0027] S1: The connecting fabric 1 used to fit the inner cup 5 is laid flat and rolled up. A hot melt adhesive layer 2 is applied to one surface of the connecting fabric 1 through a coating mechanism (not shown in the figure). After the hot melt adhesive layer 2 is formed and cooled, a skin-touch adhesive layer 3 is applied to the other surface of the connecting fabric 1.

[0028] Among them, such as Figure 1 and Figure 2 As shown, in this embodiment, the skin-contact adhesive layer 3 is made of silicone. Silicone has good adhesion and can firmly stick to the skin to prevent the bra from slipping off. Silicone is also highly comfortable and will not irritate the skin. Alternatively, the skin-contact adhesive layer 3 can be made of pressure-sensitive hot melt adhesive, which can meet the needs of most skin types. When pasted on the skin, it can maintain its adhesion in humid or hot environments, even when the skin is sweating or secreting body fluids, without lifting or falling off quickly. Furthermore, the pressure-sensitive hot melt adhesive can produce an adhesion effect at room temperature. The hot melt adhesive layer 2 should be made of materials such as EVA, PO, PUR, PE, and PU, whose melting points are compatible with the thermoforming temperature, so that the bonding between the fabric 1 and the mold cup plate 4 can be completed simultaneously during the thermoforming process.

[0029] It should be noted that in S1, since the adhesive layer is coated on the flat unwound connecting fabric 1, the coating mechanism can be roller coating, spray coating, plate coating, etc., all of which do not require manual coating, thereby improving production efficiency. In this embodiment, the coating mechanism is preferably roller coating. Roller coating is fast, has high bonding quality and uniform coating, and is suitable for uniform coating conditions. The structure and implementation principle of common coating mechanisms are common knowledge to those skilled in the art and will not be described in detail here.

[0030] S2: Cover the side of the connecting fabric 1 coated with hot melt adhesive layer 2 with the side of the molded cup plate 4 near the inner cup 5, cover the side of the connecting fabric 1 coated with skin-touch adhesive layer 3 with protective film 6, and then perform vacuum forming to form the finished molded cup plate.

[0031] The protective film 6 is made of a plastic hard sheet. The plastic hard sheet is made of PE, PP or PC, etc. that can be vacuum formed. The hardness of the plastic hard sheet is greater than that of the traditional protective film 6, so that when the plastic hard sheet contacts the skin-adhesive layer 3, a gap for air to pass between the two is not easy to form, which is more suitable for vacuum forming conditions. The protective film 6, the connecting fabric 1 and the cup plate 4 can be connected and formed at one time, without subsequent manual bonding of the protective film 6. In addition, when the finished product cup plate is cut, the plastic hard sheet is not easy to produce burrs, further improving the production quality of the finished product.

[0032] It should be noted that the vacuum forming process is a method of vacuum adsorption of a vacuum forming machine to adsorb the vacuum forming material to the surface of the mold, and then cool and form. The cup plate 4 is a molded product. After the mold pressing, the cup plate 4 forms a plurality of cups. During vacuum forming, the cup plate 4 is placed on the surface of the mold as a forming bottom die, so that the protective film 6 and the connecting fabric 1 are adsorbed to the inner cup 5 of the cup. The structure and principle of the vacuum forming machine and the vacuum forming process are well known to those skilled in the art, and will not be described here.

[0033] In this embodiment, the cup plate 4 is made of a breathable material, which facilitates the connection between the connecting fabric 1 and the cup plate 4 during vacuum forming. Specifically, the breathable material can be at least one of sponge, biological cotton, upright cotton, plant cotton, fiber cotton and other breathable materials that are good in breathability and skin-friendly.

[0034] In addition, the connecting fabric 1 is a cloth that is elastic and breathable, such as pure cotton, spandex or nylon, etc. On the one hand, it can improve the comfort of the user, and on the other hand, it can facilitate the connection between the protective film 6 and the connecting fabric 1 during vacuum forming.

[0035] S3: cutting the finished product cup plate to obtain a finished product cup.

[0036] The production process of the bra cup disclosed in the application is as follows: the connecting fabric 1 is first flatly unwound, a hot melt adhesive layer 2 is coated on one surface of the connecting fabric 1 through a coating mechanism, after the hot melt adhesive layer 2 is shaped and cooled, a skin contact adhesive layer 3 is coated on the other surface of the connecting fabric 1, one surface of the connecting fabric 1 coated with the hot melt adhesive layer 2 is covered with the cup plate 4 close to one surface of the inner cup 5, the protective film 6 is covered on the other surface of the connecting fabric 1 coated with the skin contact adhesive layer 3, then the product cup plate 4 is formed by vacuum forming, during the vacuum forming, the connecting fabric 1 is tightly attached to the cup plate 4 according to the shape of the inner cup 5 of the cup plate 4 under the action of vacuum forming, and the hot melt adhesive layer 2 on the connecting fabric 1 is in a molten state due to the high temperature generated during the vacuum forming, so that the connecting fabric 1 is connected with the cup plate 4, at the same time, the protective film 6 is tightly attached to the skin contact adhesive layer 3 of the connecting fabric 1 according to the shape of the inner cup 5 under the action of vacuum forming, so that the protective film 6 is bonded with the skin contact adhesive layer 3, and the skin contact adhesive layer 3 is baked at the same time, the production of the product cup plate is completed, and finally the product cup is obtained by cutting the product cup plate, compared with the traditional production process, the skin contact adhesive layer 3 is coated on the flat connecting fabric 1 through the coating mechanism, and then the connection among the protective film 6, the connecting fabric 1 and the cup plate 4 is completed at the same time through the action of vacuum forming, which can ensure that the skin contact adhesive layer 3 is uniformly coated without manual brushing, and can improve the production quality and production efficiency of the product, and manual bonding of the protective film 6 is not required, further improving the production efficiency.

[0037] The above detailed description does not constitute a limitation on the protection scope of the present application. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A production process of a molded cup for a hidden bra, characterized by, The connecting fabric (1) for attaching the inner cup (5) is flattened and unwound, a hot melt adhesive layer (2) is coated on one surface of the connecting fabric (1) by a coating mechanism, and a skin-touching adhesive layer (3) is coated on the other surface of the connecting fabric (1) after the hot melt adhesive layer (2) is formed and cooled; The connecting fabric (1) is covered with a mold cup plate (4) on the side coated with the hot melt adhesive layer (2) and close to the inner cup (5), a protective film (6) is covered on the side of the connecting fabric (1) coated with the skin-touching adhesive layer (3), and then the product mold cup plate is formed by suction molding; The product mold cup plate is cut to obtain a product mold cup.

2. The production process of a molded cup for a hidden bra according to claim 1, wherein The protective film (6) is made of a plastic hard sheet.

3. The production process of a molded cup for a hidden bra according to claim 1, wherein The mold cup plate (4) is made of a breathable material.

4. The production process of a molded cup for a hidden bra according to claim 1, wherein The connecting fabric (1) is an elastic and breathable fabric.

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