Sustainable bra garments and improved bio-based padding parts
Through sustainable bra garments made using bio-based polymer foam materials and recycled materials, the problems of non-recyclable and non-biodegradable petroleum-based materials in existing bra garments have been solved, achieving environmental protection and sustainability improvements, while providing Good breast support effect.
Patent Information
- Application Number
- CN202180098406.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Priority Date
- 2021-05-25
- Filing Date
- 2021-07-13
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2041-07-13
AI Technical Summary
The petroleum-based foam materials in existing bra apparel are non-recyclable and non-biodegradable, and may be toxic to the wearer and have poor environmental protection.
Renewable and biodegradable bra liner sections made from biobased polymer foam and manufactured through a sustainable and environmentally friendly process, combined with the rest of the recycled material, to form a comprehensive sustainable bra garment.
The environmental protection and sustainability of bra clothing are achieved, providing buffering and support for the wearer's breasts, while avoiding the pollution and non-recyclable problems of petroleum-based materials.
Smart Images

Figure CN117377404B_ABST
Abstract
Description
Technical Field
[0001] This application is a continuation-in-part of U.S. patent application Ser. No. 17 / 009,133. The present disclosure relates generally to a bra garment, and more particularly to a bra garment made of sustainable materials, including an improved bra pad portion made of a bio-based polymer foam material. The bio-based polymer foam material is renewable, biodegradable and / or environmentally sustainable compared to petroleum-based foam pad materials. Background Art
[0002] Women often wear bras to provide support to the breasts and to improve the shape and appearance. Other garments have bras built in to provide the same functions. Proper support for the wearer is essential for a bra, and therefore determines the type of materials that can be used, particularly the bra padding portion for the desired shaping and support, which is typically made of petroleum-based polymer foams, which are not recyclable or biodegradable. Therefore, glue is typically used to fix the foam pads to the bra. However, the foam materials and glue may be toxic to the wearer and are not recyclable or environmentally friendly. Therefore, it is necessary to provide improved environmentally friendly bra garments, particularly bra garments with foam padding portions made of renewable and biodegradable materials, to make bra products more environmentally friendly and sustainable. The improved renewable and biodegradable support pads of the present invention can be used in bra garments or other garments, such as swimwear and other garments that can have built-in bra support pads. Summary of the invention
[0003] The present disclosure can provide a sustainable bra garment, including a first cup portion and a second cup portion and a first side wing piece and a second side wing piece, wherein the first cup portion and the second cup portion include a bra pad portion made of one or more bio-based polymer foam materials, and the first side wing piece and the second side wing piece are made of a recycled flexible material and extend from the first cup portion and the second cup portion, respectively. The first buffer support pad and the second buffer support pad are configured to engage with the first cup portion and the second cup portion, respectively. Each bra pad portion has a front surface and a rear surface, wherein the front surface of each pad presents a generally convex shape, and the rear surface presents a generally concave shape. Each pad is made of a sustainable material having a hardness and density value that provides cushioning and support for the breasts of the wearer of the sustainable bra garment. The pads made of sustainable materials can also be used in other types of clothing and apparel, such as sports bras, swimwear, camisole, bras, and other clothing that can have built-in bra support pads.
[0004] In certain embodiments, the sustainable material is a bio-based material, such as a sugar cane-based polymer foam material (referred to in the art as "green EVA" material), which is non-toxic to the wearer. The sustainable material is made of biodegradable materials and environmentally friendly processes; at least the back surface of each pad may not have a laminate or glue layer; the one or more recycled materials of the first cup portion and the second cup portion and the first side wing piece and the second side wing piece are one or more recycled fabrics; and / or the first cup portion and the second cup portion and the first side wing piece and the second side wing piece are made of the same recycled fabric.
[0005] In other embodiments, the bra garment further comprises elastic shoulder straps, which are respectively connected between the first cup portion and the first side wing piece and between the second cup portion and the second side wing piece, and the elastic shoulder straps are made of recycled materials; each shoulder strap comprises an adjustable element for adjusting the length of the shoulder strap, and the adjustable element is made of a sustainable material having a hardness value greater than the hardness value of the sustainable material of the pad; the first cup portion and the second cup portion each have an underwire channel; the bra garment further comprises a bridge piece connecting the first cup portion and the second cup portion, and the bridge piece is made of recycled materials; and / or the free ends of the first side wing piece and the second side wing piece comprise corresponding fastening elements for fastening the free ends together.
[0006] The present disclosure can also provide a sustainable bra garment, including a first cup portion and a second cup portion made of one or more recycled fabrics. The first cup portion and the second cup portion each have an outer member and an inner member. The inner and outer members are connected together at their respective peripheries to form a pad storage area between them. The first side wing piece and the second side wing piece extend from the first cup portion and the second cup portion, respectively. The first side wing piece and the second side wing piece are made of one or more recycled fabrics. The first cushioning support pad and the second cushioning support pad are respectively retained in the storage area of the first cup portion and the second cup portion. Each pad has a front surface and a rear surface, corresponding to the outer member and the inner member of the first cup portion and the second cup portion. The front surface of each pad is generally convex in shape, and the rear surface is generally concave in shape. Each pad is made only of sustainable materials, which have hardness and density values that provide cushioning and support for the breasts of the wearer of the sustainable bra garment. Sustainable materials are bio-based materials that are non-toxic to the wearer.
[0007] In certain preferred embodiments, the environmentally friendly padding portion can be manufactured through a sustainable and environmentally friendly process using a sugarcane-based polymer foam material, which is referred to in the art as a green or bio-based EVA material. Bio-based EVA materials are known in the art and have previously been used to produce soles for certain specialty footwear products (see https: / / www.forbes.com / sites / veenamccoole / 2018 / 08 / 01 / allbir ds-launches-flip-flops-made-from-sustainable-sugarcane / ?sh=55cd98913672 and http s: / / materialdistrict.com / article / flip-flops-sugarcane-foam / ). However, it was discovered in the present invention that bio-based EVA materials can be more specifically formulated and processed to produce a softer yet structurally strong foam polymer material suitable for use as an environmentally friendly bra pad. In the present invention, preferred polymerization and foaming methods are disclosed for forming molded bra pad products from bio-based EVA, having the flexibility and structural properties of petroleum-based EVA, but being biodegradable and / or recyclable after the end of the useful life of a typical bra pad. The outer member of each cup portion may also be made of recycled nylon, while the inner member is made of recycled polyester; the bra garment further includes elastic shoulder straps connected between the first cup portion and the first side wing and the second cup portion and the second side wing, respectively, the elastic shoulder straps being made of recycled fabric; and / or the first cup portion and the second cup portion each having an underwire channel, a bridge connecting the first cup portion and the second cup portion, and the underwire channel and the bridge being made of recycled materials.
[0008] The present disclosure can also provide a sustainable bra garment, including a first cup portion and a second cup portion. The first cup portion and the second cup portion each have an outer part and an inner part. The inner and outer parts are connected together at their respective peripheries to form a pad storage area between them. The inner and outer parts are made of one or more recycled fabrics. The first side wing piece and the second side wing piece extend from the first cup portion and the second cup portion respectively. The first side wing piece and the second side wing piece are made of one or more recycled fabrics. The first buffer support pad and the second buffer support pad are respectively retained in the storage area of the first cup portion and the second cup portion. Each pad has a front surface and a rear surface, corresponding to the outer part and the inner part of the first cup portion and the second cup portion. The front surface of each pad is generally convex in shape, and the rear surface is generally concave in shape. As disclosed herein, each pad is made of a sustainable material, which is a bio-based foam polymer, has a hardness and density value that provides cushioning and support for the breasts of the wearer of the sustainable bra garment, and is non-toxic to the wearer. In essence, each part of the sustainable bra garment is made of recycled materials or sustainable materials.
[0009] In some embodiments, the sustainable material can be manufactured by a sustainable and environmentally friendly process; the bra garment also includes elastic shoulder straps, which are respectively connected between the first cup portion and the first side wing piece and between the second cup portion and the second side wing piece, and the elastic shoulder straps are made of recycled fabric; each shoulder strap includes an adjustable element for adjusting the length of the shoulder strap, and the adjustable element is made of a sustainable material with a hardness value greater than the hardness value of the sustainable material of the pad; and / or the first cup portion and the second cup portion each have a steel ring channel, a bridge piece connects the first cup portion and the second cup portion, and the free ends of the first side wing piece and the second side wing piece include corresponding fastening elements for fastening the free ends together, wherein the steel ring channel, the bridge piece and the fastening elements are all made of recycled materials.
[0010] This summary is not intended to identify essential features of the claimed subject matter, nor is it intended to be used to determine the scope of the claimed subject matter. It should be understood that both the foregoing general description and the following detailed description are exemplary, and are intended to provide an overview or framework for understanding the nature and character of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] The accompanying drawings are incorporated into and constitute a part of this specification. It should be understood that the accompanying drawings only illustrate some examples of the present disclosure, and other examples or combinations of various examples not specifically shown in the accompanying drawings may still fall within the scope of the present disclosure. The examples will now be described in more detail by using the accompanying drawings, in which:
[0012] Figure 1 is a front or exterior elevation view of an example sustainable bra garment according to the present disclosure;
[0013] Figure 2 yes Figure 1 A rear view or interior front view of the sustainable bra garment shown in;
[0014] Figure 3 is a front or exterior elevation view of another example sustainable bra garment according to the present disclosure;
[0015] Figure 4 yes Figure 3 A rear view or interior front view of the sustainable bra garment shown in; and
[0016] Figure 5 is a partial enlarged cross-sectional view of a cup of a sustainable bra garment according to the present disclosure.
[0017] Figure 6 is a front perspective view of a bio-based EVA foam sheet used to make one or more cushions according to the present disclosure.
[0018] Figure 7 According to this disclosure part Figure 6 A front perspective view of a partially molded cushion of a bio-based EVA foam sheet is shown in FIG.
[0019] Figure 8 is a front or elevational view of a finished cushion made in accordance with the present disclosure. DETAILED DESCRIPTION
[0020] Referring to the accompanying drawings, the present disclosure generally relates to a bra garment 100 made of sustainable and recycled materials that is environmentally friendly, non-toxic to the wearer to promote health and wellness, and can be manufactured at a relatively low cost. The bra garment 100 can be a bra, sports bra, maternity bra, bra, bikini top, camisole, other underwear tops, or other breast-covering garments, such as swimwear.
[0021] Bra garment 100 can generally include cup portions 102a, 102b, side wing pieces 104a, 104b extending from corresponding cup portions 102a, 102b, and pads 108 for cup portions 102a, 102b. Shoulder straps 106a, 106b can also be provided so that shoulder straps 106a are connected between cup portions 102a and side wing pieces 104a, and shoulder straps 106b are connected between cup portions 102b and side wing pieces 104b. Pads 108 are made of sustainable materials to provide cushioning and support for the breasts of the wearer. The rest of bra garment 100 can be made of recycled materials and / or sustainable materials. Therefore, all or substantially all of bra garment 100 can be formed only by sustainable and recycled materials.
[0022] Sustainable materials according to the present disclosure are bio-based materials, non-toxic to the wearer, and may not contain fossil fuel-based foam materials, etc. For example, the sustainable material used to form the pad 108 may have sufficient hardness and density values to provide cushioning and support to the wearer. The sustainable material of the bra garment 100 can be manufactured through sustainable and environmentally friendly processes.
[0023] Sustainable materials according to the present disclosure are eco-friendly, climate-friendly, green, environmentally friendly, environmentally sound, fuel-efficient, energy-efficient, pollution-free, organic and energy-efficient materials. Sustainable materials are materials that are viable, continuous, sustained, viable, continuous, livable, supportable, immortal, endless, renewable and environmentally friendly. Sustainable materials are produced based on available resources to meet current needs while ensuring that sufficient resources are available for future generations. For example, sustainable materials can be polymers based on sugar cane or corn. In addition, biodegradable additives can be added to sugar cane or corn-based polymers.
[0024] The cup portions 102a, 102b and the side panels 104a, 104b of the bra garment 100 can be made of recycled materials, such as recycled fabrics. Recycled materials according to the present disclosure refer to materials that convert waste into usable materials. Recycled fabrics refer to waste products or fabrics and textiles that can be sorted, graded and reused to make recycled fabrics, such as synthetic fibers such as polyester and nylon.
[0025] Each of the cup portions 102a, 102b of the bra garment 100 has an outer member 120 and an inner member 122, which may be connected together at their respective peripheries by sewing or the like to form a pad receiving area 124 that accommodates a corresponding pad 108, such as Figure 5 As shown. The outer member 120 can have a generally convex shape selected from a plurality of available cup sizes. The inner member can have a generally concave shape selected from a plurality of available cup sizes. The outer member 120 and the inner member 122 are made of one or more flexible materials. For example, the outer member can be made of nylon or recycled nylon, and the inner member can be made of polyester or recycled polyester. The polyester can be brushed to increase softness to the wearer's skin.
[0026] Each pad 108 has a front surface 110 and a rear surface 112 corresponding to the outer part 120 and the inner part 122 of the cup portion 102a, 102b, respectively. The front surface 110 of each pad 108 is generally convex, while the rear surface 112 of the pad 108 is generally concave, such as Figure 5 The size of the cushion 108 can be any cup size, generally corresponding to the size of the outer and inner pieces 120, 122 of the cup portions 102a, 102b.
[0027] Each pad 108 is made of a sustainable material that is a bio-based or green EVA polymer material that has a hardness and density value that provides cushioning and support to the breasts of the wearer of the sustainable bra garment and is non-toxic to the wearer. For example, the sustainable material of the pad 108 may contain about 60% to 85% sugarcane polymer. This ratio of sustainable material provides the pad 108 with the desired softness while providing comfort, cushioning, and adequate support to the wearer.
[0028] In an example of a preferred embodiment, the liner 108 is made only of sustainable materials polymerized using 60% to 85% bio-based EVA (e.g., sugarcane-based polymers). The polymerization of the bio-based EVA is polymerized by mixing the sustainable substance (in the form of sugarcane ethanol) with an initiator (e.g., hydrogen peroxide (or double peroxide)) and a blowing agent (or foaming agent) (e.g., azodicarbonamide) and other chemicals and additives known in the art (such as titanium dioxide that can be used as a coloring pigment). The method of the present invention includes heating the bio-based EVA mixture from room temperature to about 125°C (about 260°F) to form a molten mixture with a dough-like consistency. Next, the bio-based EVA material is compressed into a substantially flat sheet using a pass-through pressing belt. The volumetric shape of the substantially flat bio-based EVA sheet is then expanded by a two-step heating process, including: 1) heating the sheet to about 130°C (about 265°F) for about 25 minutes to obtain a volume expansion of about 90%, and 2) reheating the sheet to about 175°C (about 350°F) for about 45 minutes to obtain a second volume expansion of about 200% to form a bio-based EVA foam sheet. Figure 6 An example of a resulting bio-based EVA foam sheet 115 is shown, which may be used as a material for making one or more pads 108 .
[0029] The bio-based EVA foam sheet 115 is then formed into partial cushioning portions 115a, 115b by a molding method, the method comprising: 1) heating portions of the bio-based polymer foam sheet to about 160°C (320°F) in a mold for about 2 minutes, and 2) cooling the bio-based polymer foam sheet to about 10°C (50°F) in the mold for about 2 minutes; so that each partial cushioning portion (115a and 115b) is formed in the mold into a shape with an inner surface that is substantially concave and an outer surface that is substantially convex, and resulting in the cushioning portion having a preferred Asker hardness value of about 15 to about 25 on the Asker C scale. Figure 7 An example of partially formed cushion portions 115a and 115b is shown after the cushion cover portion is formed using the preferred forming method described above and in-process.
[0030] exist Figure 8An example of a finished pad portion 108 made according to the above-described processing method is shown in . The above-described preferred processing method can produce pad portions with different cup sizes. Several such pad portion samples were SATRA tested to evaluate the preferred range of pad material hardness properties. The material hardness of each sample ranging from cup sizes of 32A to 40DD was measured at various surface points by using a durometer on the Asker C scale in accordance with the SATRA TM205:2016 test method. After such hardness testing, it was determined that a hardness range of Asker C hardness values between about 17 and about 22 can produce a preferred material hardness value to provide appropriate cushioning and adequate support for the breasts of a wearer of a sustainable bra garment or other garment having a built-in pad 108.
[0031] The front surface 110 of each pad 108 may also be laminated to help attach the outer member 120 of the cup portion 102a, 102b. The rear surface 112 of each pad 108 may not have any lamination. Alternatively, the front surface 110 or the rear surface 112 of each pad 108 may not have any lamination.
[0032] Each side wing piece 104a, 104b is connected to the outer edge of corresponding cup part 102a, 102b. Side wing piece 104a, 104b can be made of one or more fabrics, such as nylon, regenerated nylon, etc. Side wing piece 104a, 104b can be made of regenerated fabric that is the same or different from cup part 102a, 102b. In addition, regenerated yarn can be used for sewing the periphery of any part or piece of bra garment 100, such as periphery 109 around side wing piece 104a, 104b. The free end of side wing piece 104a, 104b comprises corresponding fastening element 130 and 132 respectively, such as hook element and eyelet element, and the free end is fastened together in a traditional manner. Fastening element 130 and 132 can be made of regenerated material, such as regenerated metal for hook, regenerated fabric or yarn for eyelet.
[0033] The shoulder straps 106a, 106b can be made of recycled materials, such as recycled elastic materials, such as recycled yarn, etc., to provide flexibility and comfort to the wearer. Each shoulder strap 106a and 106b can be adjusted by adjustable elements, such as corresponding loops 134 and hook members 136, which function as known in the art. The loops 134 and hook members 136 can be made of sustainable materials, such as sugar cane polymers. The sugar cane polymers of the loops 134 and hook members 136 can be harder and more rigid than the sugar cane polymers forming the pad 108. That is, the sugar cane polymers of the loops 134 and hook members 136 have sufficient hardness values and rigidity to engage the shoulder straps 106a and 106b to allow them to be adjusted.
[0034] The bra garment 100 may include an underwire, such as Figure 1 and Figure 2 As shown, or the bra garment 100 'can be without underwire, such as Figure 3 and Figure 4 As shown. The bra garment 100 has underwire channels 140a, 140b at the bottom of the cup portions 102a, 102b, respectively. The underwire channels 140a, 140b can be made of recycled fabrics, such as recycled yarn, and are sized to accommodate traditional underwires. A bridge 138 extends between the underwire channels 140a, 140b, connecting the cup portions 102a, 102b. The bridge 138 can be made of recycled materials, such as recycled nylon.
[0035] like Figure 3 and Figure 4 As shown, the bra garment 100 ′ and Figure 1 and Figure 2 The bra garment 100 is substantially the same as in the embodiment of the present invention, except that it does not have an underwire or underwire channel. The cup portions 102a', 102b' of the bra garment 100' are the same as the cup portions 102a, 102b, except that the cup portions 102a', 102b' are sewn together at the center line 150 and the bottom line 152, for example using recycled yarn, such as Figure 4 The top of the cup portions 102a', 102b' may be provided with an optional lace decoration 154. The lace decoration 154 may be made of recycled materials, such as recycled yarn or the like.
[0036] It is obvious to those skilled in the art who benefit from the teachings presented in the foregoing description and the related drawings that modifications, combinations, sub-combinations and variations can be made without departing from the spirit or scope of the present disclosure. Likewise, the various examples described can be used alone or in combination with other examples. Those skilled in the art will appreciate that various combinations of examples not specifically described or shown herein are still within the scope of the present disclosure. In this regard, it should be understood that the present disclosure is not limited to the specific examples set forth, and the examples of the present disclosure are intended to be illustrative, rather than restrictive.
[0037] The following are some definitions and terms used in this disclosure:
[0038] EVA: In the present disclosure, "EVA" is "ethylene-vinyl acetate copolymer" known and used in the art (ethylene-vinyl-acetate) , is a resilient, petroleum-based polymer that can be used to make materials and products with rubber-like softness and flexibility.
[0039] Green EVA or Bio-based EVA: In this disclosure, "green EVA" or "bio-based EVA" is used to describe a carbon negative material, primarily made from sugar cane (sugar cane ethanol), used as a replacement and / or substitute for petroleum-based polymers. Existing bio-based EVA materials are commercially available and supplied by Braskem as EVA resins. Preferred resins are EVA Evance SVT 2145 and SVT 2180, which are typically supplied in the form of foam sheets for use in the manufacture of soles for footwear products, or for use in toys and furniture.
[0040] Hydrogen peroxide or bis(trifluoromethyl)peroxide : In this disclosure, "hydrogen peroxide" or "diperoxide" is used to describe a chemical substance used as an initiator (or catalyst) for the polymerization of unsaturated ethylene-like molecules for the production of stable polymer materials, including use as an initiator for bio-based EVA materials.
[0041] Blowing agent or foaming agent : In this disclosure, blowing agent or foaming agent is used to describe a chemical composition used in the most advanced polymerization process, usually azodicarbonimide, which is able to form a porous structure through a foaming process to reduce the density of the base polymer and increase the relative stiffness of the base polymer.
[0042] Titanium dioxide or titanium IV oxide [TiO2] : In this disclosure, "titanium dioxide" or "titanium IV oxide" is used to describe a material commonly used as a pigment in paints and polymers (also known as "titanium white").
[0043] Asker Hardness : In this disclosure, "Asker Hardness" is used to describe the hardness measurement (or its resistance to permanent indentation) of a given material, measured by the depth of an indentation produced in the material with a specified force. The commonly used measuring instrument is called a durometer, and different hardness measurement scales (e.g., Asker, Shore, Rockwell hardness scales) are known in the art. Therefore, different hardness scales are used to measure the hardness of different materials with different properties, such as rubbers, polymers, and elastomers. The most commonly used scales for measuring the hardness of rubber materials are the Asker C and Shore 00 or A scales (for softer materials) and the Shore D scale (for harder materials). The Asker C scale is typically used to measure the hardness of softer foam or rubber materials.
[0044] As used in this specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. Similarly, the adjective "another," when used to introduce an element, is intended to mean one or more elements. The terms "comprising," "including," "having," and similar terms are intended to be inclusive, and thus there may be additional elements other than the listed elements.
[0045] In addition, if the method described above does not explicitly require an order for its steps to follow or if no other order is required based on the description or claim language, then no particular order is intended to be inferred. Similarly, when an attached method claim does not explicitly recite a step mentioned in the above description, it should not be assumed that the step is required by the claim.
[0046] It should be noted that the description and claims may use geometric or relational terms. These terms are not intended to limit the present disclosure and are generally used only for ease of description so that the description can be made based on the examples in the drawings. In addition, geometric or relational terms may not be precise. For example, due to surface roughness, tolerances allowed in manufacturing, etc., walls may not be completely perpendicular or parallel to each other, but may still be considered perpendicular or parallel.
Claims
1. A sustainable bra garment, comprising: a first cup portion and a second cup portion made of one or more recycled flexible materials; a first side panel and a second side panel extending from the first cup portion and the second cup portion, respectively, and made of one or more recycled flexible materials; as well as A first cushion support pad and a second cushion support pad, configured to engage with the first cup portion and the second cup portion, respectively, each of the first cushion support pad and the second cushion support pad having a front surface and a rear surface, the front surface of each pad being convex and the rear surface being concave; each of the first cushioning support pad and the second cushioning support pad is made of a bio-based polymer foam material having a hardness and density value that provides both cushioning and support to a breast of a wearer of the sustainable bra garment; The bio-based polymer foam material comprises at least 60-85% sugarcane-based polymer; The sugar cane-based polymer is combined with at least a peroxide-based initiator and a blowing agent; The mixture of the sugar cane-based polymer, the peroxide-based initiator, and the blowing agent is formed into a substantially flat sheet by a method comprising: heating the mixture to 125° C. to form a liquid molten mixture, and compressing the liquid molten mixture using a pass-through press belt to form a substantially flat sheet; Expanding the volume of the substantially planar sheet by a two-step heating process, the two-step heating process comprising: heating the substantially planar sheet to 130° C. for 25 minutes to obtain a 90% expansion of the substantially planar sheet; and then reheating the substantially planar sheet to 175° C. for 45 minutes to obtain a second expansion of 200%; A substantially flat bio-based polymer foam sheet is thereby formed, and the substantially flat bio-based polymer foam sheet is formed into cushioning portions by a molding method, the molding method comprising: heating the bio-based polymer foam sheet to 160° C. for 2 minutes in a mold; and then cooling the bio-based polymer foam sheet to 10° C. for 2 minutes in the mold; each cushioning portion is formed in the mold into a shape having an inner surface with a concave shape and an outer surface with a convex shape; The bio-based polymer foam material has an Asker C hardness value of 15 to 25.
2. The sustainable bra garment according to claim 1, wherein the sustainable material is a bio-based material that is non-toxic to the wearer and does not contain any petroleum-based foam materials.
3. The sustainable bra garment according to claim 1, wherein at least the back surface of each pad is free of any lamination or glue layer.
4. The sustainable bra garment of claim 1, wherein the one or more recycled materials of the first and second cup portions and the first and second side panels are made from one or more recycled fabrics.
5. The sustainable bra garment of claim 4, wherein the first and second cup portions and the first and second side panels are made of the same recycled fabric.
6. The sustainable bra garment according to claim 1, further comprising elastic shoulder straps connected between the first cup portion and the first side wing panel and between the second cup portion and the second side wing panel, respectively, the elastic shoulder straps being made of recycled material.
7. The sustainable bra garment according to claim 6, wherein each shoulder strap comprises an adjustable element for adjusting the length of the shoulder strap, the adjustable element being made of a sustainable material having a stiffness value greater than the stiffness value of the sustainable material of the pad.
8. The sustainable bra garment of claim 1, wherein the first cup portion and the second cup portion each have an underwire channel.
9. The sustainable bra garment of claim 1, further comprising a bridge connecting the first cup portion and the second cup portion, the bridge being made of a recycled material.
10. The sustainable bra garment of claim 1, wherein the free ends of the first and second sidewing panels include corresponding fastening elements for fastening the free ends to each other.
11. A sustainable cushioning support pad for use in a bra garment or other garment, comprising: a cushion portion made from one or more bio-based polymer foam materials comprising at least 60-85% sugarcane-based polymers; The sugar cane-based polymer is combined with at least a peroxide-based initiator and a blowing agent; The mixture of the sugar cane-based polymer, the peroxide-based initiator, and the blowing agent is formed into a substantially flat sheet by a method comprising: heating the mixture to 125° C. to form a liquid molten mixture, and compressing the liquid molten mixture using a pass-through press belt to form a substantially flat sheet; Expanding the volume of the substantially planar sheet by a two-step heating process, the two-step heating process comprising: heating the substantially planar sheet to 130° C. for 25 minutes to obtain a 90% expansion of the substantially planar sheet; and then reheating the substantially planar sheet to 175° C. for 45 minutes to obtain a second expansion of 200%; A substantially flat bio-based polymer foam sheet is thereby formed, and the substantially flat bio-based polymer foam sheet is formed into a cushion portion by a molding method, the molding method comprising: heating the bio-based polymer foam sheet to 160° C. for 2 minutes in a mold; and then cooling the bio-based polymer foam sheet to 10° C. for 2 minutes in the mold; The cushion portion is formed in a mold into a shape having an inner surface having a concave shape and an outer surface having a convex shape; The pad portion has an Asker C hardness value of 15 to 25.
12. A method for making a cushioning support pad for use in a sustainable bra garment or other garment, comprising: a cushion portion made from one or more bio-based polymer foam materials comprising at least 60-85% sugarcane-based polymers; The sugar cane-based polymer is combined with at least a peroxide-based initiator and a blowing agent; forming the mixture of the sugar cane-based polymer, the peroxide-based initiator, and the blowing agent into a substantially flat sheet by a method comprising: heating the mixture to 125° C. to form a liquid molten mixture, and compressing the liquid molten mixture using a pass-through press belt to form a substantially flat sheet; Expanding the volume of the substantially planar sheet by a two-step heating process, the two-step heating process comprising: heating the substantially planar sheet to 130° C. for 25 minutes to obtain a 90% expansion of the substantially planar sheet; and then reheating the substantially planar sheet to 175° C. for 45 minutes to obtain a second expansion of 200%; A substantially flat bio-based polymer foam sheet is thereby formed, and the substantially flat bio-based polymer foam sheet is formed into cushioning portions by a molding method, comprising: heating the bio-based polymer foam sheet to 160° C. for 2 minutes in a mold; then cooling the bio-based polymer foam sheet to 10° C. for 2 minutes in the mold; each cushioning portion is formed in the mold into a shape having an inner surface with a concave shape and an outer surface with a convex shape; Each pad portion has an Asker C hardness value of 15 to 25.
Citation Information
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