A bra cup and bra

Abstract

The invention relates to a bra cup and a bra, which comprises a cup body, in particular, the cup body comprises a lattice point array structure elastomer and an elastic resin layer, wherein the lattice point array structure elastomer is a thermoplastic elastomer, and the thickness gradually increases from the edge to the middle part, and the elastic resin layer is formed in the internal pores of the thermoplastic elastomer and is combined with the thermoplastic elastomer. The invention infiltrates the elastic resin into the internal pores of the lattice point array structure elastomer and tightly combines the two to form a composite elastomer for the cup of the bra, which not only has perfect shaping and balanced supporting functions, but also can be relatively thinned, and has the functions of air permeability, sweat removal, protection and the like, in addition, the lattice structure can also make the whole bra naturally restore to the initial contour, and the internal impact force changes little, and the product service life is long.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of underwear, and particularly relates to a bra cup, and also relates to a bra. BACKGROUND

[0002] With the acceleration of the pace of life, people gradually pay attention to women's health, and the bra is one of the necessary clothing items for women, and the function of the bra is mainly to shield and support the breast, increase comfort and activity, and meet the importance of the general public to the health and shape of their own breasts.

[0003] At present, the bra includes a cup, a lower part, a side wing, a shoulder strap, and is made of polyurethane foam, latex, fabric laminated cloth, non-woven fabric and spacer fabric, and a steel ring or an elastic band is usually used as a supporting part for shaping, and therefore, the following defects exist.

[0004] 1) The breast of a woman is mostly composed of fat tissue, and some ligaments and skin provide internal support, but the support is sometimes not enough to support the breast (especially for older women) or to prevent the breast from moving, thus causing pain and discomfort, and also causing the chest movement of the wearer to be intensified in daily activities, blocking the blood circulation of the chest, being not conducive to the health of the chest, causing the chest to lack elasticity and be prone to sagging, and in addition, for people in the postpartum, post-lactation, large-chested and other groups, the breast may be swollen and painful, and the lobule may be hyperplastic, and the incidence of diseases such as breast cancer may be increased to a certain extent;

[0005] 2) The elastic support material used in the cup has poor air permeability and is prone to yellowing and blackening during use, especially after intense exercise in hot weather, the heat and sweat generated cannot be discharged in time, making the wearer feel wet and sticky, and the heat is unbearable, and a large amount of bacteria is easily bred, which is not conducive to human health;

[0006] 3) The thickness of the cup is also limited, and the thinner the cup is, the weaker the elastic force formed is, and once an accidental collision occurs, the chest is easily injured. SUMMARY

[0007] The present application solves the technical problems of the prior art, and provides an improved bra cup.

[0008] Meanwhile, the present application also relates to a bra.

[0009] To solve the above technical problems, the present application adopts the following technical solutions:

[0010] A bra cup includes a cup body, in particular, the cup body includes a lattice point array structure elastomer and an elastic resin layer, wherein the lattice point array structure elastomer is a thermoplastic elastomer, and the thickness gradually increases from the edge to the middle part, and the elastic resin layer is formed in the internal pores of the thermoplastic elastomer and is combined with the thermoplastic elastomer.

[0011] Preferably, the porosity of the thermoplastic elastomer is 5% to 40%. In this way, the air permeability of the bra cup is improved, the comfort of use is increased, and the weight is reduced.

[0012] According to a specific embodiment and a preferred aspect of the present application, the elastic resin layer is also formed on the outer surface of the thermoplastic elastomer. The strength, elasticity and impact resistance of the thermoplastic elastomer are further improved, and the overall thickness is not increased.

[0013] Preferably, the mass of the elastic resin layer is 10% to 50% of the mass of the thermoplastic elastomer; the density of the thermoplastic elastomer is 0.7 to 1.4 g / cm 3 ; the hardness of the elastic resin constituting the elastic resin layer is more than 50A Shore hardness and less than 40D Shore hardness, the viscosity at 25°C is less than 12000 cP, the tensile strength is more than 5 MPa, and the elongation at break is more than 120%. The strength, elasticity and impact resistance of the thermoplastic elastomer are optimized to reduce the weight.

[0014] According to another specific embodiment and a preferred aspect of the present application, the pressure required to compress the cup body to a deformation of 50% is at least 5N. The bra can effectively absorb and rebound the impact force in daily life while providing support and shaping, thereby protecting the chest.

[0015] According to another specific embodiment and a preferred aspect of the present application, a plurality of air ducts are formed on the thermoplastic elastomer, wherein the plurality of air ducts are connected to the edge part and the middle part of the thermoplastic elastomer. In the lattice structure, a plurality of air ducts are designed, and during daily exercise, air flow can enter the air ducts, so that the bra has better air permeability and sweat resistance, thereby maintaining the comfort of the chest.

[0016] According to another specific embodiment and a preferred aspect of the present application, the side surface of the thermoplastic elastomer forming the part contacting the chest is provided with a plurality of unit cells, and a part of the unit cells are provided with inwardly arched acupoint massage protrusions. Different unit cell protrusion structures correspond to different acupoints, and the unit cell protrusion structures are used for massage of the acupoints by friction in daily life, thereby playing a health care role.

[0017] Preferably, at least one of the area, the rod diameter, and the sintering density of the two adjacent crystal units is different, and the elastic support force gradually increases from the edge to the middle. That is, the lattice structure, the density, and the rod diameter are changed by adjusting one or more combinations of the rod diameter of the lattice cell and the lattice shape.

[0018] According to another specific implementation and preferred aspect of the present application, the bra cup further comprises a breathable fabric layer located on the outside and / or inside of the cup body, and the breathable fabric layer is made of breathable and skin-friendly elastic fabric; or / and, the thermoplastic elastomer is made of thermoplastic polyurethane. Such materials are skin-friendly, elastic, have outstanding load-bearing capacity, are resistant to oil, water, and mold, and have good thermoplasticity, which is convenient for 3D printing processing, and thus is extremely suitable for the use environment, performance requirements, and process requirements of the bra.

[0019] Preferably, the elastic fabric is further provided with breathable holes. The holes can guide air into the pores of the 3D printed lattice structure block, effectively improve the overall breathability and sweat-wicking property, and improve the wearing comfort.

[0020] In some specific embodiments, the thermoplastic elastomer is coated and treated by using a treatment liquid containing an elastic resin or raw material thereof and a curing agent.

[0021] In some specific embodiments, the coating treatment method is spraying, dipping, or electroplating, and the treatment liquid penetrates into the internal pores of the lattice point array structure elastomer during the coating treatment.

[0022] In some specific embodiments, the coating treatment time is 5-20 min, and the heating treatment time is 3-12 h.

[0023] Further, the mass concentration of the elastic resin in the treatment liquid is 30-60%, and the mass concentration of the curing agent is 1%-10%. In some specific embodiments, the mass concentration of the elastic resin in the treatment liquid is 40-55%, and the mass concentration of the curing agent is 2%-5%.

[0024] In some specific embodiments, the heating and curing are performed at a temperature of 80-100℃, and the coating treatment and heating and curing are performed once or repeatedly 1-3 times after the first time.

[0025] In addition, the resin constituting the thermoplastic elastomer is one or a combination of the two selected from thermoplastic polyurethane resin and thermoplastic polyethylene resin.

[0026] In some embodiments of the present application, the elastic resin constituting the elastic resin layer is one or a combination of more than one selected from polyurethane resin, acrylic resin, and silicone resin.

[0027] The present inventors have found that, by fully contacting a crystal lattice structure elastomer with a treatment liquid containing an elastic resin or a raw material for forming an elastic resin, a resin curing agent, and heating and curing, an elastic resin layer is formed in the internal pores of the crystal lattice structure elastomer and on the outer surface of the crystal lattice structure elastomer, the elastic resin is cured, bonded and compounded with the crystal lattice structure elastomer, fills the internal pores of the crystal lattice structure elastomer, and a thermoplastic elastomer with excellent mechanical properties can be obtained. Under the same weight, the thermoplastic elastomer has higher compression resistance; under the condition of reaching the same compression resistance, the material has lower weight. In addition, the elastic resin layer on the outer surface of the crystal lattice structure elastomer can reduce the surface roughness of the material, making the surface of the thermoplastic elastomer smooth.

[0028] The crystal lattice structure elastomer is prepared by 3D printing. By adjusting parameters such as 3D printing temperature and laser energy, the sintering density and porosity of the crystal lattice structure elastomer can be controlled, and then the depth and quality of the penetration of the elastic resin can be controlled. The lower the temperature and laser power, the higher the porosity of the printed crystal lattice structure elastomer, the higher the content of the elastic resin in the thermoplastic elastomer, and the better the compression resistance of the thermoplastic elastomer.

[0029] In some specific embodiments, the parameters used are as follows: temperature is 80-140℃, laser power is 30-100W, scanning speed is 4000-10000mm / s, and scanning interval is 0.1-0.3mm.

[0030] Meanwhile, the lattice cell structure constituting the crystal lattice structure elastomer is not particularly limited. The lattice cell structure can be common cubic, star-shaped, octagonal, hexagonal, rhombic and tetrahedral, etc.

[0031] Another technical solution of the present application is a bra, which comprises a cup, a side wing, a shoulder strap, wherein the cup is the bra cup described above.

[0032] Due to the implementation of the above technical solutions, the present application has the following advantages compared with the prior art:

[0033] The present application penetrates the elastic resin into the internal pores of the crystal lattice structure elastomer and tightly combines the two to form a composite elastomer for the cup of a bra, which not only has the functions of perfect shaping and balanced support, but also can be thinned relatively, and also has the functions of air permeability, sweat removal, protection, etc. In addition, the crystal lattice structure can also make the overall bra naturally restore to the initial profile, and the internal impact resistance changes less, and the product has a longer service life. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 FIG. 1 is a schematic view of the structure of the bra of Example 1;

[0035] Figure 2 For Figure 1 The structure of the middle part of the bra is shown in the figure.

[0036] Figure 3 For Figure 1 The structure of the middle part of the bra is shown in the figure.

[0037] Figure 4 For Figure 1 The structure of the middle part of the bra is shown in the figure.

[0038] Figure 5 The structure of the middle part of the bra is shown in the figure.

[0039] Figure 6 The structure of the middle part of the bra is shown in the figure.

[0040] Figure 7 For Figure 6 The structure of the middle part of the bra is shown in the figure.

[0041] Figure 8 The structure of the middle part of the bra is shown in the figure.

[0042] 1, cup; 10, cup body; 100, lattice point array structure elastomer; 11, breathable fabric layer; 2, lower part; 3, side wing; 4, shoulder strap; f, air duct; k, breathable hole; q, acupoint massage protrusion. DETAILED DESCRIPTION

[0043] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below in conjunction with the drawings. In the following description, a lot of specific details are set forth in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0044] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0045] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0046] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0047] In this application, unless otherwise expressly specified and limited, "above" or "below" a second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of a second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" a second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature. It should be noted that when an element is referred to as "fixed to" or "set on" another element, it can be directly on the other element or there may be an intermediate element present. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element present. The terms "vertical," "horizontal," "above," "below," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible embodiments.

[0048] Example 1

[0049] like Figure 1 As shown, the bra involved in this embodiment includes cups 1, underband 2, side wings 3, and shoulder straps 4, wherein there are two cups 1, which are arranged symmetrically on the left and right sides.

[0050] Combination Figure 2 As shown, the bra cup 1 includes a cup body 10 and a breathable fabric layer 11.

[0051] The cup body 10 comprises a lattice array structure elastomer 100 and an elastic resin layer, wherein the lattice array structure elastomer 100 is a thermoplastic elastomer, and the thickness gradually increases from the edge to the middle part.

[0052] In this example, the porosity of the thermoplastic elastomer is 5% to 25%, and the TPU material is 3D printed. Such materials are skin-friendly, elastic, have outstanding load-bearing capacity, are oil-resistant, water-resistant, and mold-resistant, and have good thermoplasticity and are easy to process by 3D printing, so they are extremely suitable for the use environment, performance requirements, and process requirements of a bra.

[0053] The breathable fabric layer 11 is made of elastic fabric that is breathable and skin-friendly. In this example, the elastic fabric can be on the front and back of the lattice array structure elastomer 100. Such materials are skin-friendly, elastic, have outstanding load-bearing capacity, are oil-resistant, water-resistant, and mold-resistant, and have good thermoplasticity and are easy to process by 3D printing, so they are extremely suitable for the use environment, performance requirements, and process requirements of a bra.

[0054] Specifically, the elastic fabric is also provided with breathable holes k, which are combined with the lattice structure to guide air into the pores of the 3D printed lattice structure block, effectively improving the overall air permeability and sweat-wicking properties and improving the comfort of wearing.

[0055] At the same time, the small holes in the elastic fabric can vary in opening rate per unit area according to the size ratio of the load of different parts. On the one hand, it is to match the supporting force of the lower 3D printed lattice structure block, and on the other hand, the small holes can effectively improve the overall air permeability and improve the comfort of wearing.

[0056] In combination with Figure 3 and Figure 4 As shown, a plurality of air ducts f are formed on the thermoplastic elastomer, which connects the edge and the middle part of the thermoplastic elastomer. In the lattice structure, a plurality of air ducts f are designed, and in the process of daily exercise, air can enter the air ducts, making the bra more breathable and sweat-wicking, thereby maintaining the comfort of the chest.

[0057] The side of the thermoplastic elastomer that forms the part in contact with the chest is formed by a plurality of unit cells, and some of the unit cells are provided with inwardly arched acupoint massage protrusions. Different unit cell protrusion structures correspond to different acupoints, and under the premise of having functionality, the friction in daily life is converted into massage to the acupoints, thereby playing a health care role.

[0058] At least one of the area, rod diameter, and sintering density of the two adjacent unit cells is different, and the elastic supporting force gradually increases from the edge to the middle part. That is, the change of the lattice structure, density, and rod diameter is realized by adjusting one or more combinations of the rod diameter of the lattice cell and the shape of the lattice.

[0059] In this example, part of the elastic resin layer is formed in the internal pores of the thermoplastic elastomer and is combined with the thermoplastic elastomer; the other part is formed on the outer surface of the thermoplastic elastomer. In this way, the impact force is cushioned to meet the needs provided, the air permeability of the self is improved, the use comfort is increased, and the weight is lighter; at the same time, the strength, elasticity and impact resistance of the thermoplastic elastomer are further improved, and the overall thickness is not increased.

[0060] The hardness of the elastic resin constituting the elastic resin layer is 50A Shore hardness or more and 40D Shore hardness or less, the viscosity at 25°C is less than 12000cP, the tensile strength is 5MPa or more, and the elongation at break is 120% or more.

[0061] The mass of the elastic resin layer is 5% to 10% of the mass of the lattice point array structure elastomer. The strength, elasticity and impact resistance of the thermoplastic elastomer are improved, and the weight is optimized under the premise of ensuring sufficient elastic cushioning capacity.

[0062] The pressure required for the cup body to be compressed to 50% deformation is at least 5N. The bra can effectively absorb and rebound the impact force in daily life while providing support and shaping, thereby protecting the breasts.

[0063] In addition, the lattice cell structure constituting the lattice point array structure elastomer is not particularly limited. The lattice cell structure can be a common cube, star, octagon, hexagon, rhombus and tetrahedron, etc.

[0064] Meanwhile, in this example, the forming process of the cup body includes the following steps:

[0065] 1) The thermoplastic polyurethane TPU is used as raw material, the lattice point array structure elastomer is printed by powder sintering 3D printing, and the process parameters are main temperature 100-120°C, laser power 60W, scanning speed 4000-10000mm / s, and scanning interval 0.3mm.

[0066] 2) 93 parts by mass of a commercially available polyurethane resin solution with a mass concentration of 50% and 7 parts by mass of an isocyanate curing agent are uniformly mixed and dispersed by a high-speed stirrer to obtain an impregnation treatment liquid, wherein the hardness of the polyurethane resin is 70A, the viscosity at 25°C is 10000cP, the tensile strength is 10MPa, and the elongation at break is 210%.

[0067] 3) The printed lattice point array structure elastomer is soaked in the impregnation treatment liquid prepared in step 2) for 8 minutes, shaken dry after taking out, and then placed in a vacuum oven at 80±2°C for 2.5h to obtain a composite material sample.

[0068] The sintering density and porosity of the lattice point array structure elastomer obtained at different scanning rates, and the weight of the lattice point array structure elastomer before and after treatment with polyurethane resin, and the pressure at 50% compression deformation are shown in Table 1 below:

[0069] Table 1

[0070]

[0071]

[0072] As can be seen from Table 1 above, by controlling the process parameters of 3D printing, the sintering density and porosity of the lattice point array structure elastomer can be adjusted, and the more the content of polyurethane resin in the thermoplastic elastomer, the more the compression resistance of the composite elastomer material is improved.

[0073] Example 2

[0074] As Figure 5 to Figure 7 shown, the bra of the present embodiment includes cups 1, side wings 3, and shoulder straps 4, wherein the cups 1 are two and symmetrically arranged left and right.

[0075] In this example, the cups 1 and the side wings 3 are integrally formed, wherein the structure of the cup 1 is basically the same as that of the cup of Example 1, except that.

[0076] The breathable fabric layer 11 is located on the outside of the cup body 10, and the cup body 10 is in contact with the skin from the inside (lattice point array structure elastomer 100).

[0077] At the same time, the forming process of the cup body of the present embodiment includes the following steps:

[0078] 1) Using thermoplastic polyurethane (TPU) as raw material, lattice point array structure elastomer is 3D printed by powder sintering forming, and the process parameters are main temperature 100-120℃, laser power 68W, scanning rate 6000mm / s, and scanning interval 0.2mm;

[0079] 2) A commercially available acrylic resin solution with a mass concentration of about 50% 97 parts by mass, a curing agent 4,4'-methylenebis(2-methylcyclohexylamine) 3 parts by mass, are uniformly mixed and dispersed by a high-speed stirrer to obtain an impregnation treatment liquid, wherein the hardness of the acrylic resin is 65A, the viscosity at 25℃ is 10000cP, the tensile strength is 12MPa, and the elongation at break is 180%;

[0080] 3) The printed TPU lattice point array structure elastomer is soaked in the impregnation treatment liquid for 10min, and then dried after taking out, and then placed in a 80℃ vacuum oven for curing for 5h to obtain a thermoplastic elastomer sample;

[0081] 4) The solidified sample is again placed in the immersion treatment liquid, soaked for 10 min, spun dry, and solidified.

[0082] That is, two layers of elastic resin layers are formed on the surface of the lattice point array structure elastic body in the formed thermoplastic elastomer,

[0083] Meanwhile, the weight of the thermoplastic elastomer is increased from 58 g before treatment to 70 g, and the pressure when the material compression deformation is 50% is increased from 4.8 N before treatment to 9.6 N. The density of the prepared thermoplastic elastomer is 1.1 g / cm 3 .

[0084] Example 3

[0085] As Figure 8 shown, the bra of the present embodiment includes a cup 1, a side wing 3, and a shoulder strap 4, wherein the cup 1 is two and symmetrically arranged left and right.

[0086] In the present example, the cup 1 and the side wing 3 are integrally formed, wherein the structure of the cup 1 is basically the same as that of the cup of Example 2, the breathable fabric layer 11 is located on the outside of the cup body 10, and the cup body 10 is in close contact with the skin from the inside (lattice point array structure elastic body 100).

[0087] Meanwhile, the acupoint massage protrusions q are spherical and multiple, and the multiple acupoint massage protrusions q are distributed at intervals on the inside of the cup body 10.

[0088] In the present example, the multiple acupoint massage protrusions q are distributed on the lower part of the cup body 10 according to the chest acupoints.

[0089] Meanwhile, in step 4) of the forming process of the cup, after soaking for 10 min, spinning dry, and solidification, step 4) is performed again, and three layers of elastic resin layers are formed on the surface of the lattice point array structure elastic body in the formed thermoplastic elastomer, and the weight of the thermoplastic elastomer is increased from 58 g before treatment to 73 g, and the pressure when the material compression deformation is 50% is increased from 4.8 N before treatment to 11 N. The density of the prepared thermoplastic elastomer is 1.1 g / cm 3 .

[0090] Therefore, the present application has the following advantages:

[0091] 1、The application composites the lattice point array structure elastomer and the elastic resin coating, so that the elastic resin penetrates into the internal pores of the lattice point array structure elastomer and is tightly combined with the lattice point array structure elastomer, unexpectedly, without affecting the advantages of the lattice point array structure elastomer, the compression resistance of the material is significantly improved, while the volume of the material is unchanged and the weight is only slightly increased. Compared with the lattice point array structure elastomer without composite elastic resin coating, the volume of the thermoplastic elastomer of the application is significantly smaller and the weight is significantly lighter when achieving the same compression resistance; the compression resistance of the thermoplastic elastomer of the application is significantly higher when the weight is the same.

[0092] 2、The preparation process of the thermoplastic elastomer of the application uses 3D printing to prepare the lattice point array structure elastomer, and uses coating treatment and curing process. On the one hand, by adjusting the 3D printing temperature and laser power and other parameters, the sintering density and porosity of the lattice point array structure elastomer can be controlled, and then the depth and quality of the elastic resin penetration can be controlled, and finally the degree of improvement of the compression resistance of the thermoplastic elastomer can be controlled, so that various performance thermoplastic elastomers can be prepared flexibly to meet the individual needs in various application scenarios. On the other hand, by using the coating treatment and curing process, the combination between the lattice point array structure elastomer and the elastic resin coating is more sufficient and tight, which helps to improve the strength and service life of the thermoplastic elastomer.

[0093] 3、The application not only has the functions of perfect shaping and balanced support, but also can be thinned relatively, and has the functions of air permeability, sweat removal, protection, etc. In addition, the lattice structure can also make the overall bra naturally restore to the initial profile, and the internal impact force changes little, and the service life of the product is longer.

[0094] 4、In the lattice structure, a plurality of air ducts are designed, in the process of daily exercise, airflow can enter the air ducts, so that the bra has better air permeability and sweat removal, thereby maintaining the comfort of the chest; different lattice cell protruding structures correspond to different acupoints, which can provide the function of massage to the acupoints by friction in daily life under the premise of having functions, thereby playing a health care role; in other words, not only can perfect chest shaping be provided, but also air permeability and sweat removal that traditional bras cannot match can be provided, the wearing comfort and activity are increased, and the structure integrates the massage function, so that the chest movement friction of the wearer in daily activities is converted into chest massage, blood circulation of the chest is promoted, chest elasticity is increased, and sagging and the like are effectively prevented.

[0095] 5、3D printing lattice structure has lattice structure, density, rod diameter change, so that the bra can provide support, shaping while the impact of daily life can effectively absorb and rebound, thereby playing a protective role for the chest; The air holes can guide air into the pores of the 3D printing lattice structure block, effectively improving the overall air permeability and perspiration, improving the comfort of wearing; The material is skin-friendly, elastic, has outstanding load-bearing capacity, is resistant to oil, water and mold, and has good thermoplasticity, is easy to process by 3D printing, and is therefore extremely suitable for the use environment, performance requirements and process requirements of the bra.

[0096] The endpoints of the ranges and any values disclosed herein are not limited to the precise values recited as the exact dimensions are not to be understood as being important to the scope of the application. The endpoints of the ranges are provided as example of the scope of the ranges and are not exclusive. Each single value of a range or list of values should be considered as being incorporated in the range or list. The endpoints of the ranges can be combined with one another and with the single values to create new ranges or new lists of values which are also contemplated in accordance with the application.

Claims

1. A bra cup comprising a cup body, characterised in that: The cup body comprises a lattice point array structure elastomer and an elastic resin layer, wherein the lattice point array structure elastomer is a thermoplastic elastomer, and gradually thickens from the edge to the middle; the elastic resin layer is formed in the internal pores of the thermoplastic elastomer and combined with the thermoplastic elastomer, and is also formed on the outer surface of the thermoplastic elastomer; the porosity of the thermoplastic elastomer is 5%-40%, and the mass of the elastic resin layer is 5%-50% of the mass of the thermoplastic elastomer; the pressure required for the cup body to be compressed to 50% deformation is at least 5N; a plurality of air ducts are formed on the thermoplastic elastomer, wherein the plurality of air ducts are connected to the edge and the middle of the thermoplastic elastomer; the side of the thermoplastic elastomer, which contacts the breast, has a plurality of unit cells, wherein some unit cells have an inwardly arched acupoint massage protrusion, at least one of the area, the rod diameter and the sintering density of adjacent two unit cells is different, and the elastic support force gradually increases from the edge to the middle.

2. The bra cup of claim 1, wherein: The thermoplastic elastomer has a density of 0.7 to 1.4 g / cm 3 .

3. The bra cup of claim 1, wherein: The hardness of the elastic resin constituting the elastic resin layer is above 50A Shore hardness and below 40D Shore hardness, the viscosity at 25 DEG C is less than 12000 cP, the tensile strength is above 5 MPa, and the elongation at break is above 120%.

4. The bra cup of claim 1, wherein: The bra cup further comprises a breathable fabric layer, which is located on the outside and / or the inside of the cup body, and the material of the breathable fabric layer is breathable and skin-friendly elastic fabric.

5. The bra cup of claim 4, wherein: Breathable holes are further formed in the elastic fabric.

6. The bra cup of claim 1, wherein: The material of the thermoplastic elastomer is thermoplastic polyurethane.

7. The bra cup of claim 1, wherein: The thermoplastic elastomer is coated and treated by a treatment liquid containing an elastic resin or raw material thereof and a curing agent.

8. The bra cup of claim 7, wherein: The coating treatment method is spraying, dipping or electroplating, and the treatment liquid penetrates into the internal pores of the lattice point array structure elastomer.

9. The bra cup of claim 8, wherein: The mass concentration of the elastic resin in the treatment liquid is 30%-60%, and the mass concentration of the curing agent is 1%-10%; the heating and curing are performed at a temperature of 80-100 DEG C; the coating treatment and the heating and curing are performed once, or after the first time, the process is repeated 1-3 times.

10. A bra comprising a cup, a side wing, a shoulder strap, characterized in that: The cup is the bra cup of any one of claims 1-9.

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