A cup structure for ultrasonic cutting

Abstract

The utility model provides a cup structure for ultrasonic cutting, cup structure includes inner layer, middle layer, outer layer, the middle layer is located between inner layer and outer layer, and the middle layer is located in the cup edge area of cup structure, the width of the middle layer in cup edge area of cup structure is W, wherein, W is 3mm at least, the maximum thickness of cup structure is D, wherein, 2mm less than or equal to D is 40mm, the cup edge thickness of cup structure is T, wherein, 0.5mm less than or equal to T is 2.5mm. The utility model sets up the middle layer of cup edge of cup structure and the middle layer covers the lateral width 3mm at least, improves the cup edge connection firmness of whole cup structure on the basis of guaranteeing the air permeability, softness, comfort of cup structure, when ultrasonic cutting, will not appear the phenomenon of edge cracking, and then has kept the advantages of simple structure appearance and soft touch after ultrasonic edge cutting.

Description

Technical Field

[0001] This utility model relates to the field of bra cup structure technology, and more specifically, to a bra cup structure for ultrasonic cutting. Background Technology

[0002] Traditional bras typically consist of cups, connected bands, and shoulder straps. The bands are fastened with snaps to secure the cups to the chest, while the shoulder straps wrap around the wearer's shoulders to enhance the bra's overall support and stability. As the core component of a bra, the manufacturing process of the cups directly affects the product's comfort, aesthetics, and durability.

[0003] Currently, ultrasonic cutting is commonly used for processing the edges of bra cups. This process is efficient and environmentally friendly, and can achieve smooth edges with a soft feel. However, ultrasonic cutting also has certain technical drawbacks. Cracks or bursts can easily occur at the cut edges of the bra cups, seriously affecting the product's appearance quality and lifespan.

[0004] To address these issues, the industry commonly employs sewing techniques as a remedy. For example, Chinese patent CN205143527U discloses a bra structure that incorporates sponge or upright cotton inside the cups and uses sewing to attach white adhesive tape along the edges for seamless edging, creating a so-called seamless edging cup. While this method enhances edge strength and prevents cracking to some extent, it significantly alters the product's appearance, sacrificing the clean, soft, and integrated visual effect of ultrasonic edge cutting, thus failing to meet the growing market demand for seamless, minimalist bra designs.

[0005] Therefore, how to ensure the firmness of the cup edge and prevent cracking while maintaining the advantages of the ultrasonic cutting process in terms of appearance and soft touch has become a technical problem that urgently needs to be solved in this field. Utility Model Content

[0006] In view of this, the present invention aims to propose a cup structure for ultrasonic cutting. This addresses the problem in the prior art of how to maintain the cup's edge strength and prevent cracking while simultaneously preserving the clean appearance and soft feel of the ultrasonic cutting process.

[0007] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0008] A bra cup structure for ultrasonic cutting, the bra cup structure includes an inner layer, a middle layer, and an outer layer, the middle layer is located between the inner layer and the outer layer, and the middle layer is located in the cup edge region of the bra cup structure, the width of the middle layer in the cup edge region of the bra cup structure is W, wherein W≥3mm.

[0009] This invention is set in the middle layer of the cup edge of the bra cup structure and the middle layer covers a horizontal width of ≥3mm. While ensuring the breathability, softness and comfort of the bra cup structure, it improves the connection firmness of the cup edge of the entire bra cup structure. When ultrasonically cut, there will be no edge cracking, thus retaining the advantages of simple appearance and soft touch after ultrasonic cutting.

[0010] Furthermore, the maximum thickness of the cup structure is D, where 2mm≤D≤40mm.

[0011] Furthermore, the cup edge thickness of the cup structure is T, where 0.5mm≤T≤2.5mm.

[0012] This design enhances the strength of the cup structure's edge connection, preventing edge cracking during ultrasonic cutting, while maintaining a clean appearance and soft touch.

[0013] Furthermore, the inner layer uses an inner layer material that includes at least an inner layer fabric and an inner layer sponge, the outer layer uses an outer layer material that includes at least an outer layer fabric and an outer layer sponge, and the intermediate layer uses an intermediate material for bonding the inner layer sponge and the outer layer sponge together.

[0014] In this setup, the inner and outer layers can be hot-pressed into a cup structure in the mold. Meanwhile, the middle layer material can improve the bond strength between the inner and outer layers. When ultrasonically cut, there will be no edge cracking, thus preserving the advantages of a simple appearance and soft touch after ultrasonic cutting.

[0015] Furthermore, the thickness of both the inner and outer fabric layers is 0.1-1.5 mm.

[0016] Furthermore, the total thickness of the inner and outer sponge layers is ≤12mm.

[0017] Furthermore, the thickness of the intermediate material is 0.1-1.8 mm.

[0018] Furthermore, both the inner and outer sponge layers are polyurethane foam sponges.

[0019] Furthermore, both the inner and outer fabrics are made of spandex and nylon, with spandex accounting for ≥15%, spandex + nylon ≥90%, and the density of both the inner and outer fabrics ≥130 GSM.

[0020] Furthermore, the intermediate material has a melting point of 100-220℃ and a density of 0.6-1.5 kg / m³. 3 .

[0021] Compared with the prior art, the cup structure for ultrasonic cutting described in this utility model has the following advantages:

[0022] (1) The present invention is set in the middle layer of the cup edge of the cup structure and the middle layer covers a horizontal width of ≥3mm. On the basis of ensuring the breathability, softness and comfort of the cup structure, it improves the connection firmness of the cup edge of the entire cup structure. When ultrasonic cutting, there will be no edge cracking, thus retaining the advantages of simple appearance and soft touch of the structure after ultrasonic cutting. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the cup structure in Embodiment 1 of this utility model. Figure 1 ;

[0024] Figure 2 This is a schematic diagram of the overall structure of the cup structure in Embodiment 1 of this utility model. Figure 2 ;

[0025] Figure 3 for Figure 1 A cross-sectional view along the AA direction;

[0026] Figure 4 This is a cross-sectional view of the cup structure of Embodiment 4 of this utility model;

[0027] Figure 5 This is a diagram showing the cutting and placement of the outer layer material of this utility model, wherein the upper part is a diagram showing the placement of the outer layer material, and the lower part is a structural schematic diagram of the third piece marker.

[0028] Figure 6 This is a diagram showing the cutting and placement of intermediate materials according to the present invention, wherein the upper part is a diagram showing the placement of intermediate materials and outer materials, and the lower part is a structural schematic diagram of the second cut piece marker.

[0029] Figure 7 This is a diagram showing the cutting and placement of intermediate materials according to this utility model, wherein the intermediate materials have a full-coverage structure;

[0030] Figure 8 This is a cutting and placement diagram of the inner layer material of this utility model, wherein the upper end is a placement diagram of the inner layer material, the middle material and the outer layer material, and the lower end is a structural schematic diagram of the first cut piece label.

[0031] Figure 9 This is a diagram showing the positional relationship between the punch and die of this utility model.

[0032] Figure 10 This is a schematic diagram of the structure of the inner layer material, intermediate material and outer layer material of this utility model placed on the mold;

[0033] Figure 11This is a schematic diagram of the downward movement of the punch mold of this utility model;

[0034] Figure 12 This is a schematic diagram of the pressing of the punch and die of this utility model;

[0035] Figure 13 This is a schematic diagram showing the separation of the punch mold and the die mold of this utility model.

[0036] Explanation of reference numerals in the attached figures:

[0037] 100 - Cup structure, 10 - Inner layer, 101 - First layer, 102 - Second layer, 103 - Third layer, 20 - Middle layer, 30 - Outer layer, 301 - Fourth layer, 302 - Fifth layer, 303 - Sixth layer, 1 - Inner layer material, 11 - Inner layer fabric, 12 - Inner layer sponge, 14 - First piece marker, 2 - Middle layer material, 21 - Second piece marker, 3 - Outer layer material, 31 - Outer layer fabric, 32 - Outer layer sponge, 34 - Third piece marker, 4 - Concave mold, 5 - Punch mold. Detailed Implementation

[0038] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. In addition, a brief explanation of the directions involved in the following specific embodiments is provided: the directions or positional relationships indicated by "up," "down," "left," "right," etc., mentioned in the embodiments refer to the directions or positional relationships shown in the accompanying drawings.

[0039] Example 1

[0040] This utility model relates to a cup structure for ultrasonic cutting, such as... Figures 1-2 As shown, the cup structure 100 includes an inner layer 10, a middle layer 20, and an outer layer 30, as... Figure 3 As shown, the intermediate layer 20 is located between the inner layer 10 and the outer layer 30, and the intermediate layer is located in the cup edge area of ​​the cup structure. The width of the intermediate layer in the cup edge area of ​​the cup structure is W, where W ≥ 3mm. This invention, by setting an intermediate layer in the cup edge of the cup structure and ensuring that the intermediate layer covers a horizontal width ≥ 3mm, improves the connection strength of the cup edge of the entire cup structure while maintaining the breathability, softness, and comfort of the cup structure. When ultrasonically cut, there will be no edge cracking, thus preserving the advantages of a simple appearance and soft touch after ultrasonic cutting.

[0041] In this embodiment, as Figure 3As shown, the inner layer 10 includes a first layer 101 and a second layer 102, with the first layer 101 and the second layer 102 connected. The outer layer 30 includes a fourth layer 301 and a fifth layer 302, with the fourth layer 301 and the fifth layer 302 connected. The end of the fifth layer 302 away from the fourth layer 301 is connected to the second layer 102.

[0042] In this embodiment, the material used for the intermediate layer can be a full-coverage structure, such as... Figure 7 As shown, this would result in a non-breathable, stiff cup structure, making it uncomfortable to wear and increasing manufacturing costs. Therefore, in the preferred embodiment, the intermediate layer uses a ring-shaped material, such as... Figure 5 As shown, if the width of the cup edge is too wide, it will affect the breathability and comfort of the cup structure. Preferably, 8mm ≥ W ≥ 3mm. This ensures that the breathability and softness of the cup are not affected, and also prevents edge cracking during ultrasonic cutting.

[0043] In a preferred embodiment, the maximum thickness of the cup structure 10 is D, such as... Figure 3 As shown, where 2mm≤D≤40mm.

[0044] In a preferred embodiment, the cup edge thickness of the cup structure 10 is T, such as... Figure 3 As shown, where 0.5mm≤T≤2.5mm, after the inner fabric, inner sponge, intermediate material, outer fabric, and outer sponge are heated and compressed through hot pressing and heat deformation shaping, the intermediate material penetrates into the spaces between the above materials, and the thickness of the corresponding cup edge cut position is reduced to a minimum of 0.5-2.5mm.

[0045] In a preferred embodiment, the inner layer 101 uses an inner layer material 1 that includes at least an inner layer fabric 11 and an inner layer sponge 12, the outer layer 102 uses an outer layer material that includes at least an outer layer fabric and an outer layer sponge, and the intermediate layer uses an intermediate material to bond the inner layer sponge and the outer layer sponge together; wherein the inner layer fabric 11, the inner layer sponge 12, the outer layer fabric 31, and the outer layer sponge 32 sequentially form a first layer, a second layer, a fourth layer, and a fifth layer.

[0046] In a preferred embodiment, the main components of the inner and outer fabrics are spandex and nylon, wherein spandex accounts for ≥15%, spandex + nylon ≥90%, and the fabric density is ≥130 GSM. Preferably, the spandex content of the inner and outer fabrics is 15-25%, the nylon content is 75-85%, and the fabric density is 130-250 GSM.

[0047] Specifically, the thickness of both the inner and outer fabric layers is 0.1-1.5 mm.

[0048] Specifically, the intermediate material is a hot-melt material, wherein the thickness of the intermediate material is 0.1-1.8 mm, the melting point is 100-220℃, and the density is 0.6-1.5 kg / m³. 3 .

[0049] Specifically, the intermediate material is one of polyamide hot melt adhesive, polyurethane hot melt adhesive, and polyvinyl chloride hot melt adhesive. Preferably, the intermediate material is polyurethane hot melt adhesive.

[0050] Specifically, both the inner and outer sponge layers are polyurethane foam sponges.

[0051] Specifically, the total thickness of the inner and outer sponge layers is ≤12mm. Preferably, the total thickness of the inner and outer sponge layers is 5~12mm. More preferably, the thickness ratio of the inner and outer sponge layers is 1:0.8~1.1.

[0052] This invention achieves the quality requirement that the cut edge of the cup will not spread out, crack, or burst during product use and cleaning after ultrasonic cutting of the cup edge.

[0053] This embodiment also relates to a manufacturing process for a cup structure used in ultrasonic cutting, comprising the following steps:

[0054] S1. Based on the shape of the bra cup and the structure of the matching mold, obtain the first cut piece marker 14 ( Figure 8 As shown), the second cut piece marker 21 ( Figure 5 As shown), the third piece marker 34 ( Figure 6 As shown in the figure, the mold structure includes a punch mold 5 and a die mold 4;

[0055] S2. Cut the inner layer material, outer layer material, and middle material at a 1:1 ratio according to the first cut piece label, the second cut piece label, and the third cut piece label;

[0056] S3. Install the punch and die onto the machine, such as... Figure 9 As shown, the mold is heated to the set temperature;

[0057] S4. Stack the outer layer material, intermediate material, and inner layer material sequentially on the concave mold, with the outer layer material at the bottom. Figure 5 As shown, the inner layer material is located on the top layer, such as... Figure 8 As shown, the intermediate material is placed between the two, as... Figure 6 As shown, its position corresponds to the designated area of ​​the cup edge after hot pressing and shaping;

[0058] S5, such as Figure 10-12As shown, start the machine to move the punch mold to the die mold and close the mold, press the material into the die mold, and perform hot pressing and shaping under the set temperature and pressure for a set time.

[0059] S6, such as Figure 13 As shown, when the set heating, pressurizing, heat-changing, and shaping time is reached, the machine's mounting plate moves upward, driving the punch mold to move upward and leave the concave mold, thus completing the heating, pressurizing, heat-changing, and shaping production of the material.

[0060] S7. Remove the formed product from the concave mold, and use ultrasonic waves to cut the cup edge according to the process requirements to obtain the desired cup structure.

[0061] In steps S4-S6, the three layers of material are pressed together under high temperature and pressure. This causes the material to melt, cross-link, and re-solidify at the molecular level, forming a single, integral composite structure at the edge of the cup. This fundamentally eliminates the risk of delamination at the edges of multi-layered materials.

[0062] Example 2

[0063] The difference between this embodiment and embodiment 1 is that the inner layer material 1 further includes a first intermediate layer material, which is located between the inner layer fabric 11 and the inner layer sponge 12.

[0064] Specifically, the first intermediate layer material is a single-layer material or a multi-layer material, wherein the first intermediate layer material may be the same as or different from the inner sponge. Preferably, the first intermediate layer material is the same as the inner sponge.

[0065] Example 3

[0066] The difference between this embodiment and Embodiment 1 is that the outer layer material 3 further includes a second intermediate layer material, which is located between the outer fabric 31 and the outer sponge 32. Specifically, the second intermediate layer material is a single-layer material or a multi-layer material, wherein the second intermediate layer material may be the same as or different from the outer sponge. Preferably, the second intermediate layer material is the same as the outer sponge.

[0067] Example 4

[0068] The difference between this embodiment and Embodiment 1 is that, specifically, as follows: Figure 4 As shown, the inner layer 10 also includes a third layer 103, which is located at the junction of the first layer 101 and the second layer 102. The outer layer 30 also includes a sixth layer 303, which is located between the fourth layer 301 and the fifth layer 302.

[0069] More specifically, the inner layer material 1 further includes a first intermediate layer material, which is located between the inner fabric 11 and the inner sponge 12. The outer layer material 3 further includes a second intermediate layer material, which is located between the outer fabric and the outer sponge. The first intermediate layer material forms a third layer after hot pressing, and the second intermediate layer material forms a sixth layer after hot pressing.

[0070] Specifically, both the first intermediate layer material and the second intermediate layer material are single-layer or multi-layer materials. The first intermediate layer material and the second intermediate layer material are the same as or different from the inner sponge outer layer and the sponge, respectively. Preferably, the first intermediate layer material is the same as the inner sponge, and the second intermediate layer material is the same as the outer sponge.

[0071] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A cup structure for ultrasonic cutting, characterized in that, The cup structure (100) includes an inner layer (10), a middle layer (20), and an outer layer (30). The middle layer (20) is located between the inner layer (10) and the outer layer (30), and the middle layer (20) is located in the cup edge area of ​​the cup structure (100). The width of the middle layer (20) in the cup edge area of ​​the cup structure (100) is W, where W≥3mm.

2. The cup structure for ultrasonic cutting according to claim 1, characterized in that, The maximum thickness of the cup structure (100) is D, where 2mm≤D≤40mm.

3. A cup structure for ultrasonic cutting according to claim 1, characterized in that, The cup edge thickness of the cup structure (100) is T, where 0.5mm≤T≤2.5mm.

4. A cup structure for ultrasonic cutting according to claim 1, characterized in that, The inner layer (10) uses an inner layer material (1) that includes at least an inner layer fabric (11) and an inner layer sponge (12). The outer layer (30) uses an outer layer material (3) that includes at least an outer layer fabric (31) and an outer layer sponge (32). The intermediate layer (20) uses an intermediate material (2) to bond the inner layer sponge (12) and the outer layer sponge (32) together.

5. A cup structure for ultrasonic cutting according to claim 4, characterized in that, The thickness of both the inner fabric (11) and the outer fabric (31) is 0.1-1.5 mm.

6. A cup structure for ultrasonic cutting according to claim 4, characterized in that, The total thickness of the inner sponge (12) and the outer sponge (32) is ≤12mm.

7. A cup structure for ultrasonic cutting according to claim 4, characterized in that, The thickness of the intermediate material (2) is 0.1-1.8 mm.

8. A cup structure for ultrasonic cutting according to claim 4, characterized in that, Both the inner layer sponge (12) and the outer layer sponge (32) are polyurethane foam sponges.

9. A cup structure for ultrasonic cutting according to claim 4, characterized in that, Both the inner and outer fabrics are made of at least spandex and nylon, with spandex accounting for ≥15% and spandex + nylon ≥90%, and the density of both the inner and outer fabrics is ≥130 GSM.

10. A cup structure for ultrasonic cutting according to claim 4, characterized in that, The intermediate material has a melting point of 100-220℃ and a density of 0.6-1.5 kg / m³. 3 .

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