CN107136582B - Breast support, preparation method thereof, bra using breast support and preparation method thereof - Google Patents
Breast support, preparation method thereof, bra using breast support and preparation method thereof Download PDFInfo
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- CN107136582B CN107136582B CN201710514703.XA CN201710514703A CN107136582B CN 107136582 B CN107136582 B CN 107136582B CN 201710514703 A CN201710514703 A CN 201710514703A CN 107136582 B CN107136582 B CN 107136582B
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- breast support
- breast
- diisocyanate
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41C—CORSETS; BRASSIERES
- A41C3/00—Brassieres
- A41C3/12—Component parts
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41C—CORSETS; BRASSIERES
- A41C3/00—Brassieres
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41C—CORSETS; BRASSIERES
- A41C3/00—Brassieres
- A41C3/0085—Brassieres with ventilation feature
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41C—CORSETS; BRASSIERES
- A41C5/00—Machines, appliances, or methods for manufacturing corsets or brassieres
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41C—CORSETS; BRASSIERES
- A41C5/00—Machines, appliances, or methods for manufacturing corsets or brassieres
- A41C5/005—Machines, appliances, or methods for manufacturing corsets or brassieres by moulding
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- Textile Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Corsets Or Brassieres (AREA)
Abstract
The invention relates to the technical field of bras, in particular to a breast support, a preparation method of the breast support, a brassiere applying the breast support and a preparation method of the brassiere. The breast support has good air permeability and strong supporting force, can reduce the occurrence of breast cancer and the extrusion of liver channel, and can achieve the effect of gathering. The bra with the breast support is softer than a steel ring and is more profiled and lighter than a common steel ring-free bra, the comfort level of the bra is good, the air permeability is good, the supporting force is strong, and the technical problem that upright cotton retracts after cup-shaped washing water exists in the field for a long time is solved.
Description
Technical Field
The invention relates to the technical field of bras, in particular to a breast support, a preparation method of the breast support, a brassiere applying the breast support and a preparation method of the brassiere.
Background
As an essential single product for women at present, the bra has to have both decoration and functionality. Its functional most mainly embody just to the bearing of chest with gather together the effect, only a cloth of simple can't play good bearing and gather together the effect, so the cup of brassiere must be provided with the sponge, reaches good bearing and gathers together the effect through the sponge, and the brassiere of selling on the existing market mainly has the sponge to have steel ring brassiere, sponge no steel ring brassiere and upright cotton brassiere several kinds.
The sponge has steel ring bra, the operation process is complex, the rejection rate is high, the air permeability is poor, and because of the constraint of the steel ring, the steel ring is just near the liver meridian of human body, the steel ring can be shifted due to poor threading, and the liver meridian is pressed by more than ten acupuncture points, namely the lymph in western medicine is blocked by the blood flowing downwards, outwards and towards the armpit, so that the problems of unsmooth running of the meridian can be caused, the mammary sclerosis, the breast duct diseases and the breast cancer are caused due to the poor air permeability and long-term wearing.
The no steel ring brassiere of sponge, the gas permeability is poor, and the holding power is not enough can't reach and gathers together the effect, and especially the women of size more than the C cup lack the support for a long time to lead to the breast can appear flagging or uncomfortable, not only influenced health but also influenced the aesthetic feeling of "being straight".
At present, no bra which can reduce the occurrence of breast cancer and the extrusion of liver channel and can achieve the gathering effect is available.
Disclosure of Invention
In order to overcome the defects and shortcomings in the prior art, the invention aims to provide the breast support which has the advantages of good air permeability, strong supporting force and the like, can reduce the occurrence of breast cancer and the extrusion of liver channels, and can achieve the gathering effect.
The invention also aims to provide a preparation method of the breast support, which has the advantages of simple operation, low cost and high efficiency, and the raw materials are subjected to synergistic reaction by strictly controlling the dosage, the adding sequence and the reaction parameters of the raw materials, so that the whole reaction system is orderly and stably carried out, and the prepared breast support has good air permeability and strong supporting force.
The invention also aims to provide a bra which has good comfort, good air permeability and strong supporting force and simultaneously solves the technical problem that the upright cotton bra retracts after being washed by cup-shaped water for a long time in the field.
The invention also aims to provide a method for preparing the bra, which saves all processes related to a steel ring and an inner container compared with the method for preparing the sponge cup, and has simpler processes, thereby saving production materials by about 30 percent.
One of the purposes of the invention is realized by the following technical scheme: the utility model provides a breast props, includes that the breast holds in the palm and two support cups, the breast holds in the palm including two breasts holds in the palm the main part, and two breasts hold in the palm the main part and pass through the fixed stay face and connect, the fixed stay face is extended to form down along the below of two breasts support main parts respectively and is taken off the limit, two the support cup set up respectively in breast holds in the palm main part top, a plurality of bleeder vents have been seted up on the support cup, the breast props and props for the TPU breast.
The supporting cup mainly plays a role in supporting and preventing the breast from sagging, and the air holes of the supporting cup enable the bra to be more breathable when being worn; the breast support plays a role in supporting and attaching to the lower part of the breast, and the lower edge is naturally transited, so that the breast support can be naturally attached to a human body, and the comfort is improved. The bra made of the breast support provided by the invention has the advantages that the traditional steel ring and the traditional inner container are replaced, the bra made of the breast support provided by the invention achieves the effects of being softer than a sponge with the steel ring and more shaped than a common bra without the steel ring, so that the extrusion of the liver channel is reduced in the long-term wearing process of a woman, and meanwhile, the effects of ventilation and gathering can be achieved, and compared with the processing process of a sponge cup, the processing process of the bra made of the breast support provided by the invention omits all processes and materials related to the steel ring and the inner container, so that the raw materials are saved by about 30%, and the processes are simpler; the TPU breast support is environment-friendly and durable, the Shore hardness of the TPU breast support is 30-100 degrees, and in the hardness range, the problem of too large compression and poor gathering effect can be avoided.
Preferably, there are gaps between the ends of the breast support body and the ends of the lower rim of the retainer cup.
The breast support body is characterized in that one end, close to the fixed supporting surface, of the breast support body is a head end, the other end of the breast support body is a tail end, the head end of the breast support body is 4-5mm away from the head end of the supporting cup, the tail end of the breast support body is 2-3mm away from the tail end of the supporting cup, the head end and the tail end of the breast support body extend to the middle rib and the side of the breast respectively to achieve the effects of attaching the lower part of the breast and supporting the breast, the breast support body is limited within a certain range from the aspect of using comfort degree, the breast support body is attached to a human body in use, and the comfort degree is improved.
Preferably, the width of the lower scraping edge gradually decreases from one end close to the fixed supporting surface to the other end, and the distance from the other end of the lower scraping edge to the other end of the breast support main body is one eighth to one seventh of the length of the breast support main body.
The lower edge of the breast support main body is formed downwards to naturally transit, so that the breast support is more attached to the lower part of a breast, and the comfort level can be increased by the aid of the breast support.
Preferably, the thickness of the supporting cup is 0.5-1.0mm, the width of the breast support main body is 7-9mm, the thickness of the breast support main body is 2-4mm, the thickness of the fixed supporting surface is 0.5-0.9mm, and the thickness of the lower edge is 0.5-1.0 mm.
The supporting cup is manufactured according to the cup type of the design style, the supporting cup can not only support and prevent the breast from sagging, but also ensure the wearing comfort, and more preferably, the thickness of the supporting cup is 0.8 mm; the main body of the breast support plays a main supporting role, the width and the thickness of the main body of the breast support are limited in the range, the supporting requirement can be met, the wearing comfort level can be ensured, and more preferably, the width of the main body of the breast support is 8mm, and the thickness of the main body of the breast support is 3 mm; the thickness of the fixed supporting surface is 0.5-0.9mm, the thickness of the lower edge 3 is 0.5-0.9mm, so that supporting force and comfort level during wearing can be guaranteed, and the thickness of the fixed supporting surface is 0.7mm, the thickness of the lower edge is 0.7mm, the thicknesses of the fixed supporting surface and the lower edge are consistent, and therefore production and comfort level improvement are facilitated.
Preferably, the distance between every two adjacent air holes is 4-5mm, and the shape of each air hole is a polygon with the side length of 5-10 mm.
The air holes are made according to the cup shape of the design style, the shape of the air holes of the bearing cup is a polygon with the side length of 5-10mm, more preferably, the distance between the air holes of the bearing cup is 5mm, and the air holes are in a rheological type.
Preferably, the lower edge of the supporting cup is provided with a wide edge, the breast support is fixed on the wide edge, and the width of the wide edge is 12-20 mm.
The supporting cup and the breast support are processed separately, a broadside with the width of 12-20mm is reserved at the lower edge of the supporting cup, and the breast support is attached to the broadside, so that the distance from the head end of the breast support main body to the head end of the broadside is 4-5mm, and the distance from the tail end of the breast support main body to the tail end of the broadside is 2-3 mm. In other embodiments, the breast support main body, the support cup, the fixed support surface and the lower pushing edge can be integrally formed, so that the processing is convenient, and the cost is low.
Preferably, the breast support is prepared from the following raw materials in parts by weight:
15-80 parts of polyester polyol
10-60 parts of diisocyanate
5-40 parts of polyethylene glycol
1-3 parts of chain extender
1-4 parts of catalyst
20-30 parts of epoxy resin
15-25 parts of polypropylene
10-25 parts of EVA resin
1-5 parts of antibacterial agent
0.5-3 parts of antioxidant
1-3 parts of initiator
1-5 parts of a cross-linking agent.
The polyurethane elastomer is obtained by adopting polyester polyol, diisocyanate and polyethylene glycol under the action of a chain extender and a catalyst, wherein the polyester polyol and the polyethylene glycol are soft segments, the diisocyanate is a hard segment, and the preferred mass ratio of the soft segment to the hard segment is 2-5: 1, wherein the mass ratio of the polyester polyol to the polyethylene glycol is 2-4: more preferably, the mass ratio of the soft segment phase to the hard segment phase is 3:1, wherein the mass ratio of the polyester polyol to the polyethylene glycol is 2: 1; the diisocyanate structure contains unsaturated bonds, so that the diisocyanate structure has high activity, and reacts with polyester polyol with active groups and polyethylene glycol to generate an elastomer, the polyethylene glycol can increase the pores of the polyurethane elastomer, so that the permeability of the polyurethane elastomer is increased, and moreover, the polyethylene glycol is introduced into a soft segment phase, so that the toughness and the strength of the polyurethane elastomer are greatly improved; the polyurethane elastomer, the epoxy resin, the polypropylene and the styrene form a modified TPU material under the action of an antioxidant, a cross-linking agent and an initiator, so that the breast support made of the TPU material is soft and elastic, has high elasticity and high toughness, good corrosion resistance and good mechanical property, and a bra made of the breast support is washable and does not deform in the using process, and the service life of the bra is prolonged; meanwhile, the antibacterial agent is added, so that the breast support made of the TPU material has antibacterial and bacteriostatic effects.
The polyurethane elastomer is prepared by compounding the polyethylene glycol adipate glycol and the polybutylene adipate glycol according to the mass ratio of 1:1, so that the prepared polyurethane elastomer has the advantages of wide hardness range, good transparency, good air permeability and good elasticity.
The diisocyanate contains unsaturated bonds in the structure, so that the diisocyanate has high activity and can easily react with organic or inorganic substances with active groups to generate an elastomer, the diisocyanate is any one or a mixture of at least two of 2, 6-toluene diisocyanate, 2, 4-toluene diisocyanate, diphenylmethane diisocyanate, 1, 5-naphthalene diisocyanate, xylylene diisocyanate, 3' -dimethyl-4, 4-biphenyl diisocyanate, triphenylmethane triisocyanate or p-phenylene diisocyanate, more preferably the diisocyanate is prepared by compounding 2, 4-toluene diisocyanate and 2, 6-toluene diisocyanate according to the mass ratio of 3:1, the diisocyanate prepared by compounding 2, 4-toluene diisocyanate and 2, 6-toluene diisocyanate according to the mass ratio of 3:1 is adopted in the invention, the prepared polyurethane elastomer has wide hardness range, good transparency, good air permeability and good elasticity.
The number average molecular weight of the polyethylene glycol is 2000-4000, so that the prepared polyurethane elastomer has the advantages of good moisture permeability, good mechanical property, simple preparation method and the like.
The chain extender is one of ethylene glycol, 1, 3-propylene glycol, 1, 4-butanediol, 2, 3-butanediol or 1, 5-pentanediol, and is arranged to react with functional groups on a linear polymer chain to expand the molecular chain and increase the molecular weight, so as to improve the mechanical property and the technological property of polyurethane and polyester.
The catalyst is any one or mixture of at least two of organic bismuth or organic zinc, more preferably a mixture of organic bismuth and organic zinc with the mass ratio of 1-2:1, the catalysts are environment-friendly catalysts, and the combination of bismuth and zinc has a synergistic effect, so that the formula and the production are more flexible, the energy consumption is reduced, and the reaction rate and the yield are improved.
The epoxy resin, the polypropylene and the EVA resin are added into the polyurethane elastomer, so that the breast support is soft and elastic, has high elasticity and high toughness, good corrosion resistance and good mechanical property, and can resist water washing and deform in the use process of a bra made of the breast support, and the service life of the bra is prolonged.
The epoxy resin has small curing deformation shrinkage, good product dimensional stability and good flexibility, and is preferably one or a mixture of at least two of bisphenol A epoxy resin, brominated bisphenol A epoxy resin or phenolic aldehyde epoxy resin; the polypropylene has good corrosion resistance, small water absorption and good strength and permeability; the EVA resin has good flexibility, elasticity, transparency, and aging resistance, and an ethylene-vinyl acetate copolymer is preferred.
The initiator is a free radical initiator, preferably azobisisobutyronitrile, and more preferably, the addition amount of the initiator is 1 to 5 percent of the polyurethane elastomer.
The cross-linking agent can convert linear or slightly branched chain macromolecules into a three-dimensional network structure so as to improve the performances of strength, heat resistance, wear resistance, solvent resistance and the like, and the more preferable cross-linking agent is a mixture of dicumyl peroxide and polyvinylpyrrolidone, wherein the mass ratio of the dicumyl peroxide to the polyvinylpyrrolidone is 1: 2-4.
The antioxidant is one or mixture of at least two of antioxidant 1010, antioxidant 1076, antioxidant 264, antioxidant TPP or antioxidant TNP.
The antibacterial agent is prepared from chitosan, tea polyphenol and luteolin according to the ratio of 5-8: 2-3: 1, in the presence of a catalyst.
The second purpose of the invention is realized by the following technical scheme: a preparation method of a breast support comprises the following steps:
(1) mixing polyester polyol, diisocyanate and polyethylene glycol, heating to 85-115 ℃, uniformly mixing, and keeping the temperature for 0.5-1.0 h;
(2) cooling the material subjected to heat preservation in the step (1) to 65-75 ℃, adding a catalyst and a chain extender, uniformly mixing, and preserving heat for 0.5-1.0 h;
(3) extruding and granulating the materials subjected to heat preservation in the step (2) to obtain a polyurethane elastomer;
(4) mixing the polyurethane elastomer obtained in the step (3) with epoxy resin, polypropylene, EVA resin, an initiator, an antibacterial agent, an antioxidant and a crosslinking agent, and drying at the temperature of 60-70 ℃ for 2-3 h;
(5) heating the material dried in the step (4) to 160-250 ℃, uniformly mixing, and keeping the temperature for 0.5-1.0 h;
(6) and (5) injecting the material subjected to heat preservation in the step (5) into a mold, and cooling and forming to obtain the breast support.
The heat preservation in the step (1) is to better mix polyester polyol, diisocyanate and polyethylene glycol; the heat preservation in the step (2) is to blend the chain extender and the catalyst into the reactant in the step (1) for mixing reaction, the temperature reduction in the step (2) also takes the characteristics of the catalyst and the chain extender into consideration, if the temperature is too high, the activity of the catalyst is affected, the addition of the chain extender can lead the polymerization of the reactant to generate a solidification phenomenon, and the potential safety hazard can be generated for the heavy one; in the step (4), the materials are dried at 60-70 ℃ to avoid side reaction caused by high temperature; the heat preservation in the step (5) is to carry out the mixing reaction to ensure the reaction to be complete.
The preparation method has the advantages of simple operation, low cost and high efficiency, and all the raw materials are subjected to synergistic reaction by strictly controlling the dosage, the adding sequence and the reaction parameters of all the raw materials, so that the whole reaction system is orderly and stably carried out, and the prepared breast support has good air permeability and strong supporting force.
The third purpose of the invention is realized by the following technical scheme: a bra made of the breast support is an upright cotton bra.
The invention adopts the breast support to replace the steel ring and the inner container of the traditional bra with the sponge and the common steel ring without the sponge, improves the comfort level and the air permeability, reduces the occurrence of breast cancer and the extrusion of the liver channel during the long-term correct wearing process of the female, and the upright cotton cup is lighter than the sponge cup by 20 to 30 percent, and can also achieve the gathering effect.
The fourth purpose of the invention is realized by the following technical scheme: a preparation method of the bra made of the breast support comprises the following steps: (1) the surface bottom material is singly pasted with upright cotton; (2) spraying quick-drying glue on the bottom material; (3) cutting the noodle base material; (4) opening and cutting the hand-pushed cotton; (5) hand-pushing cotton single-side glue spraying; (6) spraying glue on the single side of the breast support; (7) setting the fabric once; (8) placing the breast support; (9) placing hand-pushed cotton; (10) secondary sizing; (11) and cooling; (12) trimming the semi-finished product; (13) and (5) shaping a finished product.
Compared with the processing technology with steel rings, the processing technology of the bra manufactured by the breast support saves all procedures related to the steel rings/the inner containers, such as double-sided glue spraying of the steel ring sleeves, length shearing of the steel ring sleeves, fixing of the date by beating one end, steel ring penetrating, fixing of the date by beating the other end, trimming of redundant rabbets at the two ends of the steel ring sleeves, double-sided glue spraying of the non-elastic woolen cloth, one-time shaping of the beer non-elastic woolen cloth for the hearts and the inner containers, placing of the chicken heart woolen cloth, placing of hand-pushed cotton, secondary shaping of the inner containers and 14-channel double-sided glue spraying of the inner containers, and only the procedure of single-sided glue spraying of the breast support is adopted for replacing, so that the procedure is simpler, the use of a large amount of glue.
The invention has the beneficial effects that: the breast support is used for replacing a steel ring and an inner container in the traditional bra, can be naturally attached to a human body, improves the comfort, has the advantages of good air permeability and strong supporting force, can reduce the generation of breast cancer and the extrusion of liver channels, can achieve the gathering effect, and is environment-friendly and durable.
According to the preparation method of the breast support, the polyurethane elastomer is obtained by adopting polyester polyol, diisocyanate and polyethylene glycol under the action of a chain extender and a catalyst, and then the epoxy resin, the polypropylene and the EVA resin are added into the polyurethane elastomer, so that the breast support is soft and elastic, has high elasticity and high toughness, good corrosion resistance and good mechanical property, can resist water washing and does not deform in the use process, and the use time of the bra manufactured by using the breast support is prolonged; the preparation method of the breast support is simple to operate, low in cost and high in efficiency, the raw materials are subjected to synergistic reaction by strictly controlling the dosage, the adding sequence and the reaction parameters of the raw materials, the whole reaction system is orderly and stably carried out, and the prepared breast support has good air permeability and strong supporting force.
The bra of the invention adopts the breast support to replace the steel ring and the inner container of the traditional sponge bra with the steel ring and without the steel ring, the manufactured upright cotton bra is softer than the bra with the steel ring and is more shaped and lighter than the bra without the steel ring, the comfort level is good, the air permeability is good, the supporting force is strong, the occurrence of breast cancer and the extrusion of liver channel can be reduced in the long-term correct wearing process of women, the weight of the upright cotton cup is 20-30 percent lighter than that of the sponge cup, and the gathering effect can be achieved; the upright cotton bra manufactured by the breast support solves the technical problem that upright cotton retracts after being washed by cup-shaped water for a long time in the field.
Compared with the processing technology of the sponge cup, the processing technology of the bra provided by the invention omits all processes related to the steel ring and the inner container, and only needs to replace the process of latex support single-side glue spraying, so that the process is simpler, the use of a large amount of glue is reduced, the bra is more environment-friendly, and meanwhile, the production materials are saved by about 30%.
Drawings
FIG. 1 is a schematic structural view of a breast support according to embodiment 1 of the present invention;
FIG. 2 is an exploded view of a breast support according to example 1 of the present invention;
fig. 3 is a schematic structural view of a breast support in embodiment 2 of the present invention.
The reference signs are: 1. fixing the support surface; 2. a breast support main body; 3. downward edge scraping; 4. a support cup; 41. a wide side; 5. and (4) air holes.
Detailed Description
For the understanding of those skilled in the art, the present invention will be further described with reference to the following examples and accompanying fig. 1-3, which are not intended to limit the present invention.
Example 1
As shown in fig. 1, the invention relates to a breast support, which comprises a breast support and two support cups 4, wherein the breast support comprises two breast support main bodies 2, the two breast support main bodies 2 are connected through a fixed support surface 1, the fixed support surface 1 extends along the lower parts of the two breast support main bodies 2 to form a lower holding edge 3, the two support cups 4 are respectively arranged above the breast support main bodies 2, a plurality of air holes 5 are formed in the support cups 4, and the breast support is a TPU breast support.
In this embodiment, there are gaps between the two ends of the main body 2 and the two ends of the lower edge of the cup 4.
In this embodiment, the thickness of the supporting cup 4 is 0.5-1.0mm, the width of the breast support main body 2 is 7-9mm, the thickness of the breast support main body is 2-4mm, the thickness of the fixed supporting surface 1 is 0.5-0.9mm, and the thickness of the lower edge 3 is 0.5-1.0 mm.
In the embodiment, the distance between the adjacent air holes 5 is 4-5mm, and the shape of the air holes 5 is a polygon with the side length of 5-10 mm.
As shown in fig. 2, in this embodiment, a wide edge 41 is provided at the lower edge of the support cup 4, the breast support is fixed to the wide edge 41, and the width of the wide edge 41 is 12-20 mm.
Example 2
As shown in fig. 3, the present embodiment is different from embodiment 1 in that: the width of the lower scraping edge 3 is gradually reduced from one end close to the fixed supporting surface 1 to the other end, and the distance from the other end of the lower scraping edge 3 to the other end of the breast support main body 2 is one eighth to one seventh of the length of the breast support main body 2.
Example 3
This example differs from examples 1 and 2 in that: the breast support is prepared from the following raw materials in parts by weight:
15 parts of polyester polyol
10 parts of diisocyanate
5 portions of polyethylene glycol
Chain extender 1 part
Catalyst 1 part
20 parts of epoxy resin
15 portions of polypropylene
10 portions of EVA resin
Antibacterial agent 1 part
0.5 part of antioxidant
Initiator 1 part
And 1 part of a crosslinking agent.
The preparation method of the milk powder comprises the following steps
(1) Weighing a proper amount of polyester polyol, diisocyanate and polyethylene glycol, adding the polyester polyol, the diisocyanate and the polyethylene glycol into a reaction kettle, heating to 85 ℃, melting, stirring until the mixed materials are uniformly mixed, and then keeping the temperature for 0.5 h;
(2) cooling the reaction kettle in the step (1) to 65 ℃, adding a proper amount of catalyst and chain extender, stirring until the materials are uniformly mixed, and then preserving heat for 0.5h to obtain a mixed raw material;
(3) extruding and granulating the mixed raw materials in the step (2) to obtain a polyurethane elastomer;
(4) weighing a proper amount of epoxy resin, polypropylene, EVA resin, an initiator, an antibacterial agent, an antioxidant, a crosslinking agent and the polyurethane elastomer obtained in the step (3), and drying at 60 ℃ for 2 hours to obtain a dried material;
(5) heating the dried material obtained in the step (4) to 160 ℃, melting, stirring until the mixed material is uniformly mixed, and then preserving heat for 0.5h to obtain a mixed material;
(6) and (5) injecting the mixed material in the step (5) into a mould, cooling and forming to obtain the required breast support.
Example 4
This example differs from examples 1-3 in that: the breast support is prepared from the following raw materials in parts by weight:
30 parts of polyester polyol
Diisocyanate 20 parts
15 portions of polyethylene glycol
Epoxy resin 25 parts
18 portions of polypropylene
EVA resin 20 parts
1.5 portions of antioxidant
Initiator 1.5 parts
3 parts of a crosslinking agent.
The preparation method of the milk powder comprises the following steps
(1) Weighing a proper amount of polyester polyol, diisocyanate and polyethylene glycol, adding the polyester polyol, the diisocyanate and the polyethylene glycol into a reaction kettle, heating to 100 ℃, melting, stirring until the mixed materials are uniformly mixed, and then keeping the temperature for 0.8 h;
(2) cooling the reaction kettle in the step (1) to 70 ℃, adding a proper amount of catalyst and chain extender, stirring until the materials are uniformly mixed, and then preserving heat for 0.8h to obtain a mixed raw material;
(3) extruding and granulating the mixed raw materials in the step (2) to obtain a polyurethane elastomer;
(4) weighing a proper amount of epoxy resin, polypropylene, EVA resin, an initiator, an antibacterial agent, an antioxidant, a crosslinking agent and the polyurethane elastomer obtained in the step (3), and drying at 65 ℃ for 2.5 hours to obtain a dried material;
(5) heating the dried material obtained in the step (4) to 200 ℃, melting, stirring until the mixed material is uniformly mixed, and then preserving heat for 0.8h to obtain a mixed material;
(6) and (5) injecting the mixed material in the step (5) into a mould, cooling and forming to obtain the required breast support.
Example 5
This example differs from examples 1-4 in that: the breast support is prepared from the following raw materials in parts by weight:
60 parts of polyester polyol
50 parts of diisocyanate
30 portions of polyethylene glycol
Chain extender 2.5 parts
28 parts of epoxy resin
20 portions of polypropylene
EVA resin 20 parts
4 portions of antibacterial agent
2 portions of antioxidant
2.5 parts of initiator
4 parts of a crosslinking agent.
The preparation method of the milk powder comprises the following steps
(1) Weighing a proper amount of polyester polyol, diisocyanate and polyethylene glycol, adding the polyester polyol, the diisocyanate and the polyethylene glycol into a reaction kettle, heating to 110 ℃, melting, stirring until the mixed materials are uniformly mixed, and then keeping the temperature for 0.5-1 h;
(2) cooling the reaction kettle in the step (1) to 72 ℃, adding a proper amount of catalyst and chain extender, stirring until the materials are uniformly mixed, and then preserving heat for 1h to obtain a mixed raw material;
(3) extruding and granulating the mixed raw materials in the step (2) to obtain a polyurethane elastomer;
(4) weighing a proper amount of epoxy resin, polypropylene, EVA resin, an initiator, an antibacterial agent, an antioxidant, a crosslinking agent and the polyurethane elastomer obtained in the step (3), and drying at 68 ℃ for 3 hours to obtain a dried material;
(5) heating the dried material obtained in the step (4) to 220 ℃, melting, stirring until the mixed material is uniformly mixed, and then preserving heat for 1h to obtain a mixed material;
(6) and (5) injecting the mixed material in the step (5) into a mould, cooling and forming to obtain the required breast support.
Example 6
This example differs from examples 1-5 in that: the breast support is prepared from the following raw materials in parts by weight:
80 parts of polyester polyol
Diisocyanate 60 parts
40 portions of polyethylene glycol
30 parts of epoxy resin
25 parts of polypropylene
25 parts of EVA resin
5 portions of antibacterial agent
3 portions of antioxidant
3 portions of initiator
5 parts of a crosslinking agent.
The preparation method of the milk powder comprises the following steps
(1) Weighing a proper amount of polyester polyol, diisocyanate and polyethylene glycol, adding the polyester polyol, the diisocyanate and the polyethylene glycol into a reaction kettle, heating to 115 ℃, melting, stirring until the mixed materials are uniformly mixed, and then keeping the temperature for 1 h;
(2) cooling the reaction kettle in the step (1) to 75 ℃, adding a proper amount of catalyst and chain extender, stirring until the materials are uniformly mixed, and then preserving heat for 1h to obtain a mixed raw material;
(3) extruding and granulating the mixed raw materials in the step (2) to obtain a polyurethane elastomer;
(4) weighing a proper amount of epoxy resin, polypropylene, EVA resin, an initiator, an antibacterial agent, an antioxidant, a crosslinking agent and the polyurethane elastomer obtained in the step (3), and drying at 70 ℃ for 3 hours to obtain a dried material;
(5) heating the dried material obtained in the step (4) to 250 ℃, melting, stirring until the mixed material is uniformly mixed, and then preserving heat for 1h to obtain a mixed material;
(6) and (5) injecting the mixed material in the step (5) into a mould, cooling and forming to obtain the required breast support.
Example 7
This embodiment relates to a brassiere made from the breast brace of embodiments 1-6, the brassiere being an upright cotton brassiere.
The method comprises the following steps: (1) the surface bottom material is singly pasted with upright cotton; (2) spraying quick-drying glue on the bottom material; (3) cutting the noodle base material; (4) opening and cutting the hand-pushed cotton; (5) hand-pushing cotton single-side glue spraying; (6) spraying glue on the single side of the breast support; (7) setting the fabric once; (8) placing the breast support; (9) placing hand-pushed cotton; (10) secondary sizing; (11) and cooling; (12) trimming the semi-finished product; (13) and (5) shaping a finished product.
The vertical cotton bra manufactured by the breast support of the invention replaces a steel ring and an inner container, and the vertical cotton bra of the invention achieves the effect of softness with the steel ring enclosure rather than the effect of no steel ring enclosure and lightness, so that the breast cancer and the liver channel extrusion are reduced in the long-term wearing process of women, and the effects of ventilation and gathering can be achieved at the same time.
Table 1 shows the water wash comparison of the upright cotton bra cup of the invention and a conventional sponge bra cup:
| number of washes | The invention relates to a vertical cotton bra cup | Conventional |
| 5 times (twice) | Soft hand feeling, no change | The hand feeling becomes soft, the shape of the outer cup begins to retract |
| 10 times of | The outer cup shape begins to slightly retract | The shape of the outer cup begins to shrink seriously and the cup shape begins to deform |
| 15 times of | The outer cup is slightly retracted 4mm and the inner cup is slightly wrinkled | The outer cup shape slightly retracted 8mm, the inner cup slightly wrinkled, and the cup deformed. |
Table 2 shows the process comparison between the prior sponge steel ring bra and the upright cotton bra of the present invention:
| numbering | Procedure (ii) | Existing sponge steel ring bra | The invention relates to a vertical cotton bra |
| 1 | Single-layer laminating adhesive for fabric | Is provided with | Is free of |
| 2 | Single-stick laminating adhesive for backing material | Is provided with | Is free of |
| 3 | Single-layer vertical cotton fabric | Is free of | Is provided with |
| 4 | Bottom material spray quick-drying glue | Is free of | Is provided with |
| 5 | Base material for cutting noodles | Is provided with | Is provided with |
| 6 | Cotton laminating adhesive for surface liner | Is provided with | Is free of |
| 7 | Cotton for cutting surface bottom inner container | Is provided with | Is free of |
| 8 | Hand-push cotton for cutting | Is provided with | Is provided with |
| 9 | Hand-push cotton double-side glue spraying device | Is provided with | Is free of |
| 10 | Hand-push cotton single-side glue spraying | Is free of | Is provided with |
| Push cotton | Is provided with | Is provided with | |
| 11 | Double-sided glue spraying of steel ring sleeve | Is provided with | Is free of |
| 12 | Steel ring sleeve shear length | Is provided with | Is free of |
| 13 | Single-side spray adhesive for breast support | Is free of | Is provided with |
| 14 | Fixing the date with one end sleeved by a steel ring | Is provided with | Is free of |
| 15 | Steel ring | Is provided with | Is free of |
| 16 | The other end of the steel ring is fixed | Is provided with | Is free of |
| 17 | Redundant seam allowance at two ends of trimming steel ring sleeve | Is provided with | Is free of |
| 18 | Double-sided glue spraying of non-elastic coarse cotton cloth | Is provided with | Is free of |
| 19 | Beer non-elastic felt for chicken heart | Is provided with | Is free of |
| 20 | The inner container is shaped once | Is provided with | Is free of |
| 21 | Steel ring/ | Is provided with | Is free of |
| 22 | Place heart coarse cotton cloth | Is provided with | Is free of |
| 23 | Hand-pushed cotton | Is provided with | Is free of |
| 24 | Secondary shaping | Is provided with | Is free of |
| 25 | Double-sided glue spraying of inner container | Is provided with | Is free of |
| 26 | Inner container pruning | Is provided with | Is free of |
| 27 | One-step shaping | Is free of | Is provided with |
| 28 | Shaping of finished product | Is provided with | Is provided with |
| 29 | Cooling and shaping | Is free of | Is provided with |
| 30 | Pruning | Is free of | Is provided with |
| 31 | Finished product ultrasonic wave | Is provided with | Is free of |
Table 3 shows a comparison of the air permeability of upright cotton bra cups made from the breast supports of examples 1-6 and conventional sponge bra cups, respectively, using the JIS-L-1079 textile air permeability test method:
| serial number | 1 | 2 | 3 | 4 | 5 | 6 | Conventional sponge bra cup |
| Air permeability (cc/cm)2.s） | 124.2 | 125.3 | 129.1 | 108.7 | 117.6 | 113.5 | 7.3 |
| Density (kg/m)3） | 34 | 34 | 34 | 36 | 35 | 36 | 40 |
The above-described embodiments are preferred implementations of the present invention, and the present invention may be implemented in other ways without departing from the spirit of the present invention.
Claims (8)
1. The utility model provides a breast props, includes breast support and two support cups, its characterized in that: the breast support comprises two breast support main bodies, the two breast support main bodies are connected through a fixed supporting surface, the fixed supporting surface extends along the lower parts of the two breast support main bodies to form a lower pushing edge, the two support cups are arranged above the breast support main bodies respectively, a plurality of air holes are formed in the support cups, and the breast support is a TPU breast support;
the TPU emulsion support is prepared from the following raw materials in parts by weight:
the polyester polyol is one or two of polyethylene glycol adipate glycol, polybutylene glycol adipate glycol, polyethylene glycol adipate-butylene glycol adipate glycol or polyethylene glycol adipate glycol;
the diisocyanate is any one or a mixture of at least two of 2, 6-toluene diisocyanate, 2, 4-toluene diisocyanate, diphenylmethane diisocyanate, 1, 5-naphthalene diisocyanate, xylylene diisocyanate, 3' -dimethyl-4, 4-biphenyl diisocyanate, triphenylmethane triisocyanate or p-phenylene diisocyanate;
the chain extender is one of ethylene glycol, 1, 3-propylene glycol, 1, 4-butanediol, 2, 3-butanediol or 1, 5-pentanediol;
the catalyst is any one or the mixture of at least two of organic bismuth or organic zinc;
the initiator is azobisisobutyronitrile;
the cross-linking agent is a mixture of dicumyl peroxide and polyvinylpyrrolidone, and the mass ratio of the cross-linking agent to the polyvinylpyrrolidone is 1: 2-4;
the antioxidant is one or a mixture of at least two of antioxidant 1010, antioxidant 1076, antioxidant 264, antioxidant TPP or antioxidant TNP;
the antibacterial agent is prepared from chitosan, tea polyphenol and luteolin according to the ratio of 5-8: 2-3: 1 in proportion;
the breast support is prepared by the following steps:
(1) mixing polyester polyol, diisocyanate and polyethylene glycol, heating to 85-115 ℃, uniformly mixing, and keeping the temperature for 0.5-1.0 h;
(2) cooling the material subjected to heat preservation in the step (1) to 65-75 ℃, adding a catalyst and a chain extender, uniformly mixing, and preserving heat for 0.5-1.0 h;
(3) extruding and granulating the materials subjected to heat preservation in the step (2) to obtain a polyurethane elastomer;
(4) mixing the polyurethane elastomer obtained in the step (3) with epoxy resin, polypropylene, EVA resin, an initiator, an antibacterial agent, an antioxidant and a crosslinking agent, and drying at the temperature of 60-70 ℃ for 2-3 h;
(5) heating the material dried in the step (4) to 160-250 ℃, uniformly mixing, and keeping the temperature for 0.5-1.0 h;
(6) and (5) injecting the material subjected to heat preservation in the step (5) into a mold, and cooling and forming to obtain the breast support.
2. A breast support according to claim 1, wherein: gaps are respectively reserved between the two ends of the breast support main body and the two ends of the lower edge of the bearing cup.
3. A breast support according to claim 2, wherein: the width of the lower scraping edge is gradually reduced from one end close to the fixed supporting surface to the other end, and the distance from the other end of the lower scraping edge to the other end of the breast support main body is one eighth to one seventh of the length of the breast support main body.
4. A breast support according to claim 1, wherein: the thickness of the supporting cup is 0.5-1.0mm, the width of the breast support main body is 7-9mm, the thickness of the breast support main body is 2-4mm, the thickness of the fixed supporting surface is 0.5-0.9mm, and the thickness of the lower edge is 0.5-1.0 mm.
5. A breast support according to claim 1, wherein: the distance between every two adjacent air holes is 4-5mm, and the shape of each air hole is a polygon with the side length of 5-10 mm.
6. A breast support according to claim 1, wherein: the lower edge of the supporting cup is provided with a wide edge, the breast support is fixed on the wide edge, and the width of the wide edge is 12-20 mm.
7. A brassiere made with the breast brace of any of claims 1-6, wherein: the bra is a vertical cotton bra.
8. A method of making a brassiere according to claim 7, wherein: the method comprises the following steps: (1) the surface bottom material is singly pasted with upright cotton; (2) spraying quick-drying glue on the bottom material; (3) cutting the noodle base material; (4) opening and cutting the hand-pushed cotton; (5) hand-pushing cotton single-side glue spraying; (6) spraying glue on the single side of the breast support; (7) setting the fabric once; (8) placing the breast support; (9) placing hand-pushed cotton; (10) secondary sizing; (11) and cooling; (12) trimming the semi-finished product; (13) and (5) shaping a finished product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710514703.XA CN107136582B (en) | 2017-06-29 | 2017-06-29 | Breast support, preparation method thereof, bra using breast support and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710514703.XA CN107136582B (en) | 2017-06-29 | 2017-06-29 | Breast support, preparation method thereof, bra using breast support and preparation method thereof |
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| CN107136582B true CN107136582B (en) | 2020-05-15 |
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| CN102898816B (en) * | 2012-10-19 | 2014-04-30 | 奥斯汀新材料（张家港）有限公司 | Preparation method of moisture-permeable thermoplastic polyurethane elastomer |
| CN103319681A (en) * | 2013-06-28 | 2013-09-25 | 南通华盛高聚物科技发展有限公司 | Low-melting-point biodegradable polyurethane elastomer |
| CN104072716B (en) * | 2014-07-18 | 2016-05-11 | 浙江奥康鞋业股份有限公司 | Polyurethane elastomer and the sole of being made by it |
| CN104738823A (en) * | 2015-04-16 | 2015-07-01 | 东莞市永存内衣有限公司 | Breast support, bra manufactured from same and preparation process of bra |
| CN105801998B (en) * | 2016-04-12 | 2018-03-02 | 安踏（中国）有限公司 | A kind of thermoplastic polyurethane composite foam material and preparation method thereof |
| CN106617482A (en) * | 2016-11-17 | 2017-05-10 | 无锡市长安曙光手套厂 | Wear-resistant sole with poly (ether ester) type polyurethane microporous elastomer |
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