WO2019113884A1

WO2019113884A1 - High temperature resistant latex for close-fitting clothing mold cups and cushions and preparation method therefor

Info

Publication number: WO2019113884A1
Application number: PCT/CN2017/116152
Authority: WO
Inventors: 张妙玲; 张飞; 范文静
Original assignee: 深圳方塔科技有限公司
Priority date: 2017-12-14
Filing date: 2017-12-14
Publication date: 2019-06-20

Abstract

A high temperature resistant latex for close-fitting clothing mold cups and cushions and a preparation method therefor. The high temperature resistant latex comprises, based on the total mass percentage of the high temperature resistant latex as 100%, the following components in mass percentage: 45-60% of natural latex; 35-45% of a filler; 2-7% of an accelerator; 0.5-2% of a vulcanizer; 1-4% of a lubricant; 0.3-2% of a plasticizer; and 0.3-8% of a foamer. The components and the contents thereof in the formulation of the high temperature resistant latex achieve synergistic effects therebetween, endowing the high temperature resistant latex with softness and skin-friendliness, good breathability, and support for high temperature hot pressing and setting. Thus, the high temperature resistant latex can be used for producing close-fitting clothing products that require setting, such as bra mold cups and hip pads, and has a wide range of applications.

Description

High temperature resistant latex for close-fitting clothing cup and cushion and preparation method thereof

Technical field

The invention belongs to the technical field of materials, and in particular relates to a high temperature resistant latex for a mold cup and a cushion of a close-fitting garment and a preparation method thereof.

Background technique

In today's market, the material of the mold cup for the close-fitting clothing is generally sponge or silica gel. The molecular structure of the sponge is unstable and it is easy to turn yellow. There is almost no manufacturer to use the PU sponge to make the light plate (without lace and other concealing) white bra; and because the sponge has a honeycomb structure, the structure is tight and not easy to breathe, when the human body sweats, the water molecules are easy. Stored in the honeycomb to create a stuffy feeling, not only is not easy to dry, but also easy to hide dirt, so it will become a hotbed of bacterial growth, not easy to health, and the sponge bra feels a little rough; sponge bra is very strong, when cleaning, the sponge will Absorbing washing powder, soap and other cleaning products, no matter how rinsing is difficult to thoroughly clean; in short, the sponge mold cup or hip pad has limited practicality. The biggest problem with silicone bras is that they are heavy and airtight. They are generally not worn for a long time. Otherwise, they may cause skin allergies, redness, blushing, etc., so they are often made into invisible bras that are worn for a short time.

The existing latex products are soft, natural, non-toxic, breathable, and only have a weight of 1/6 of silica gel, but because they are not resistant to high temperature and cannot be hot pressed, they can only be used in large areas on bedding. Can not be used on bras, cups, hip pads and other intimate clothing needs to be shaped products. Therefore, the prior art needs to be improved.

technical problem

The object of the present invention is to overcome the above-mentioned deficiencies of the prior art, and to provide a high temperature resistant latex for a garment molded cup and a cushion, and a preparation method thereof, aiming at solving the problem that the existing bra cup material is airtight and of poor quality, and The existing latex cannot be hot pressed and shaped so that it cannot be made into a technical problem of the setting material on the underwear.

Technical solution

In order to achieve the above object, the technical solution adopted by the present invention is as follows:

One aspect of the present invention provides a high temperature resistant latex comprising 100% by mass of the total mass of the high temperature resistant latex comprising the following mass percent components:

Natural latex 45-60%;

Filler 35-45%;

Promoter 2-7%;

Vulcanizing agent 0.5-2%;

Lubricant 1-4%;

Plasticizer 0.3-2%;

Foaming agent 0.3-8%.

Accordingly, the present invention provides a method for preparing a high temperature resistant latex, comprising the following steps:

The components and content of the above-mentioned high temperature resistant latex according to the present invention are respectively weighed into raw materials of the respective components;

The natural latex is subjected to a first warming softening treatment, and then the lubricant, the plasticizer and the filler are added to obtain a first mixed material;

The first mixed material is subjected to a second warming softening treatment, and then the vulcanizing agent and the accelerator are added to be mixed to obtain a second mixed material;

The blowing agent is added to the second mixture to perform a foaming treatment to obtain the high temperature resistant latex.

Another aspect of the present invention provides a body garment comprising a styling material in contact with human skin, the styling material comprising the above-described refractory latex of the present invention.

Correspondingly, the present invention provides a method for preparing a close-fitting garment, comprising the following steps:

Providing the above high temperature resistant latex of the present invention;

The high temperature resistant latex is placed in a setting machine for hot pressing setting treatment.

Beneficial effect

The high temperature resistant latex provided by the invention is mainly composed of natural latex and filler, and the natural latex has the characteristics of natural non-toxicity and good skin feeling, and the filler has the function of reinforcing increment, and the vulcanizing agent in the high temperature resistant latex makes the natural latex. Molecular cross-linking forms a three-dimensional network structure, which increases the elastic strength, the accelerator promotes the vulcanization, the plasticizer can enhance the softness of the high temperature resistant latex, and the foaming agent makes the high temperature resistant latex form a microporous structure to increase the gas permeability and pressure resistance; The synergistic effect between the components and the content in the high temperature resistant latex formulation finally makes the high temperature resistant latex of the invention have the characteristics of soft skin-friendly, good gas permeability, high temperature hot pressing and setting, and therefore can be used for preparing bras. Applicable products such as mold cups and hip pads require a fixed product and have wide application value.

The preparation method of the high temperature resistant latex provided by the invention has the advantages of wide source of raw materials, low price, simple processing technology, large scale production, and finally the high temperature resistant latex has soft skin-friendly, good gas permeability and high temperature hot pressing. The characteristics of stereotypes have a wide range of application values.

The close-fitting clothing provided by the invention has the characteristics of soft skin-friendly and good air permeability because the styling material on the skin contacting with the human skin contains the special high-temperature resistant latex of the invention, and the close-fitting clothing has no harm to the human skin, and is easy to wear after being worn. Cleaning, with a good user experience.

The preparation method of the close-fitting garment provided by the invention adopts the special high temperature resistant latex of the invention as the raw material, and the high temperature resistant latex has the characteristics of high temperature resistance and hot pressing setting, so that it can be placed in the setting machine for simple high temperature hot pressing. It can be molded.

DRAWINGS

1 is a schematic view showing the initial material of the high temperature resistant latex prepared in Example 1-3 of the present invention;

Fig. 2 is a view showing a bra cup obtained after hot press setting in Example 4 of the present invention.

Embodiments of the invention

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In one aspect, an embodiment of the present invention provides a high temperature resistant latex, wherein the high temperature resistant latex comprises 100% by mass of the total mass of the high temperature resistant latex:

Natural latex 45-60%;

Filler 35-45%;

Promoter 2-7%;

Vulcanizing agent 0.5-2%;

Lubricant 1-4%;

Plasticizer 0.3-2%;

Foaming agent 0.3-6%.

The high temperature resistant latex provided by the embodiment of the invention is mainly composed of natural latex and filler, and the natural latex has the characteristics of natural non-toxicity and good skin feeling, and the filler has the function of reinforcing increment, and the vulcanizing agent in the high temperature resistant latex makes The natural latex molecules crosslink to form a three-dimensional network structure, increase the elastic strength, the accelerator promotes the vulcanization, the plasticizer can enhance the softness of the high temperature resistant latex, and the foaming agent makes the high temperature resistant latex glue form a microporous structure to increase the gas permeability; in short, The synergistic effect between the components and the content in the high temperature resistant latex formulation finally makes the high temperature resistant latex of the embodiment of the invention have the characteristics of soft skin-friendly, good gas permeability, high temperature hot pressing and setting, such as 140- Hot pressing at 180 ° C; therefore, it can be used to prepare bras, such as bra cups and hip pads, which have a wide range of applications.

Specifically, the natural latex itself is a light-proof, heat-sensitive material, which is pulverized and deformed when it is contacted by sunlight or a heat source of superheat. Therefore, in the embodiment of the present invention, the natural latex and the vulcanizing agent are mixed and vulcanized, and the filler and the like are mixed. The other components are made into a high-temperature resistant latex product by a composite shape. The high-temperature resistant latex is specially developed for hot pressing and other processes; 45-60% of natural latex is used to maintain its natural content in this range. Poisonous, skin-friendly feel, and synergistic with other ingredients to increase the high temperature resistance of the final product: 45-60% of natural latex and other ingredients such as fillers (such as fillers and accelerators containing high temperature resistant elements such as calcium and zinc) The foaming action of the foaming agent synergistically achieves the effect of high temperature resistance, and reduces the characteristics that the natural latex itself is not resistant to high temperature and pulverized.

Specifically, in the high temperature resistant latex of the embodiment of the present invention, the content of the natural latex is 45-60%, specifically 45%, 48%, 50%, 51%, 52%, 55%, 60%, and the like. Natural latex has the characteristics of high elasticity and flexibility. It has various natural and comfortable characteristics. It has no chemical compounds. Contact with the skin will not cause bad chemical reactions, and it will make people feel comfortable. The natural latex in the range makes the high temperature resistant latex of the embodiment have the characteristics of good skin feel, and at the same time, through the synergistic action of other auxiliary agents (such as filler, vulcanizing agent, accelerator and plasticizer) in the high temperature resistant latex formulation, The high temperature resistant latex is made to have high temperature resistance.

Specifically, in the high temperature resistant latex of the embodiment of the present invention, the content of the filler is 35-45%, specifically 35%, 38%, 40%, 41%, 45%, and the like. The filler in the range of the mass percentage can provide a good reinforcement effect on the high temperature resistant latex. Further, in the above high temperature resistant latex, the filler comprises calcium carbonate, and the preferred calcium carbonate raw material is readily available, and the price is suitable, and can be filled in a large amount, such as various heavy calcium carbonate, light carbonic acid and activated carbonic acid, and is applicable. .

Specifically, in the high temperature resistant latex of the embodiment of the present invention, the content of the vulcanizing agent is 0.5 to 2%; specifically, 0.5%, 1%, 1.5%, 2%, or the like. The vulcanizing agent in the range of the mass percentage can make the natural latex molecules crosslink well to form a three-dimensional network structure, and increase the elastic strength, and the vulcanizing agent in the range has a good vulcanization effect. Further, the vulcanizing agent is preferably sulfur, sulfur is a sulfur or colloidal sulfur, and has good vulcanization effect. After the natural latex is treated with sulfur, the mechanical properties are greatly improved.

Specifically, in the high temperature resistant latex of the embodiment of the present invention, the content of the accelerator is 2-7%; specifically, it may be 2%, 2.5%, 3.5%, 5%, 6%, 7% or the like. The promoter in the range of the mass percentage can better promote the action of the vulcanizing agent. Further, the accelerator is preferably zinc oxide and/or magnesium oxide, such as preferably 3-5% zinc oxide and 0.5-1% magnesium oxide as a promoter, so that the effect of the vulcanizing agent is better.

Specifically, in the high temperature resistant latex of the embodiment of the present invention, the content of the lubricant is 1-4%; specifically, it may be 1%, 1.5%, 2%, 3%, 4%, or the like. The lubricant within the mass percentage range can reduce the frictional resistance of the components in the high temperature resistant latex formulation, making the high temperature resistant latex easy to process. Further, the lubricant is preferably at least one of an alkane oil, diethyl decanoate, tetradecylcycloheptasiloxane, palmitic acid, stearic acid and oleic acid; in a specific embodiment, preferably 0.5 % alkane oil, 1% diethyl decanoate, 0.01% palmitic acid, 0.01% stearic acid, 0.05% tetramethylcyclohexasiloxane and 0.5% oleic acid, the lubricating effect of the preferred lubricant component optimal.

Specifically, in the high temperature resistant latex of the embodiment of the present invention, the content of the plasticizer is 0.3 to 2%; specifically, it may be 0.3%, 0.5%, 1%, 1.5%, 3% or the like. The plasticizer in the range of the mass percentage can enhance the softness of the high temperature resistant latex. Further, the accelerator is preferably di(2-ethylhexyl) adipate and/or diisooctyl phthalate. The ester, in a specific embodiment, preferably 0.5% di(2-ethylhexyl) adipate and 0.05% diisooctyl phthalate, the preferred plasticizer component has the best plasticizing effect. The high temperature resistant latex is easy to process.

Specifically, in the high temperature resistant latex of the embodiment of the invention, the content of the blowing agent is from 0.3 to 8%. Specifically, it may be 0.3%, 0.5%, 1%, 2%, 3%, 5%, 6%, 8%, or the like. The blowing agent in the range of the mass percentage can form a high-temperature latex to form a large amount of microporous structure to increase the gas permeability. Specifically, the blowing agent is preferably azodicarbonamide, and various gas-type foaming agents such as carbon dioxide, nitrogen, and the like.

Correspondingly, an embodiment of the invention provides a method for preparing a high temperature resistant latex, comprising the following steps:

S01: The components and content of the above-mentioned high temperature resistant latex according to an embodiment of the present invention are respectively weighed into raw materials of the respective components;

S02: the natural latex is subjected to a first warming softening treatment, and then the lubricant, the plasticizer and the filler are added to obtain a first mixture;

S03: the first mixture is subjected to a second warming softening treatment, and then the vulcanizing agent and the accelerator are added to be mixed to obtain a second mixture;

S04: adding the blowing agent to the second mixture to perform a foaming treatment to obtain the high temperature resistant latex.

The invention provides a method for preparing a high temperature resistant latex, which has the advantages of wide source of raw materials, low price, simple processing technology, large scale production, and finally the high temperature resistant latex has soft skin-friendly, good gas permeability and high temperature heat. The characteristics of the pressure setting have a wide application value.

Specifically, the first warming softening treatment mainly softens the natural latex so as to be uniformly mixed with other ingredients, and preferably, the natural latex is softened by heating between 60 and 80 °C. The second warming softening treatment primarily softens the first mixture to a more uniform mixing with the other ingredients added thereafter, preferably, also by heating at 60-80 °C. Finally, the foaming agent is added to the second mixture to carry out a foaming treatment to obtain the high temperature resistant latex of the embodiment of the present invention.

In another aspect, an embodiment of the present invention provides a body garment comprising a styling material in contact with human skin, the styling material comprising the above-described refractory latex of the present invention.

The intimate clothing provided by the embodiment of the invention has the high temperature resistant latex characteristic of the embodiment of the invention because of the styling material which is in contact with the skin of the human body, and therefore has the characteristics of soft skin-friendly and good air permeability, and the intimate clothing has no harm to the human skin. It is easy to clean after wearing and has a good user experience.

Preferably, the intimate garment comprises a bra cup and/or a hip pad.

Correspondingly, an embodiment of the invention provides a method for preparing a close-fitting garment, comprising the following steps:

E01: providing the above high temperature resistant latex of the present invention;

E02: The high temperature resistant latex is placed in a setting machine for hot pressing setting treatment.

The method for preparing the intimate clothes provided by the embodiments of the present invention uses the high temperature resistant latex which is unique to the embodiment of the present invention as a raw material, and the high temperature resistant latex has the characteristics of high temperature resistance and hot pressing setting, so that it can be placed in the setting machine for simple operation. The high temperature hot pressing can be formed, and the process is simple.

Specifically, in the above step E02, the setting machine is a pneumatic cup setting machine, that is, a temperature control cup setting machine. The temperature of the hot press setting treatment is 140-180 ° C, and the time is 2-4 min; that is, the high temperature resistant latex of the embodiment of the invention can withstand the high temperature of 140-180 ° C. Further, the hot press setting process further includes a cold press processing step.

Specifically, when the required thickness of the finished mold cup is less than 1 cm, the pneumatic cup setting machine can be shaped by using a high temperature of 140-180 ° C and hot pressing for 2-4 min; when the thickness of the desired mold cup is higher than 1 cm, After the pneumatic cup setting machine, using 140-180 °C high temperature, hot pressing 2-4min, then immediately put into the same mold clamp cold pressing for 2min, you can shape. In addition, in the embodiment of the invention, the high temperature resistant latex can be directly hot pressed, or the high temperature resistant latex can be wrapped with the fabric for hot pressing, and the fabric wrapping can not only beautify the appearance of the hot pressed product, but also can make the present The high temperature resistant latex of the embodiment can further achieve the effect of the purpose of the embodiment by further increasing the high temperature resistance by 5-10 ° C under the condition of high temperature resistance of 140-180 ° C.

The hot-pressed product is made of the high-temperature resistant latex of the embodiment, and has a soft skin feeling similar to that of the silica gel, but because of its density and foaming process characteristics, the weight is only 1/3 of that of the silica gel, and Breathable, and because of the biological properties of natural latex, it does not stain like a sponge.

The present invention has been subjected to a number of tests in succession, and a part of the test results are now described in further detail as a reference, and will be described in detail below in conjunction with specific embodiments.

Example 1

A high temperature resistant latex comprising 100% by mass of the total mass of the high temperature resistant latex comprising the following mass percent components:

Natural latex 45%;

Filler 45%;

Accelerator 6%;

Vulcanizing agent 1%;

Lubricant 2.4%;

Plasticizer 0.3%;

Foaming agent 0.3%.

The preparation method of the high temperature resistant latex comprises the following steps:

S11: The components and contents of the above-mentioned high temperature resistant latex according to the present embodiment are respectively weighed into raw materials of the respective components;

S12: heating and softening the natural latex at 60-80 ° C, and then adding a lubricant, a plasticizer and a filler to obtain a first mixture;

S13: heating and softening the first mixture at 60-80 ° C, and then adding a vulcanizing agent and a promoter to obtain a second mixture;

S14: adding a foaming agent to the second mixture to perform a foaming treatment to obtain a high temperature resistant latex.

Example 2

Natural latex 60%;

Filler 35%;

Promoter 2%;

Vulcanizing agent 1%;

Lubricant 1%;

Plasticizer 0.5%;

Foaming agent 0.5%.

The preparation method of the high temperature resistant latex is the same as in the first embodiment.

Example 3

Natural latex 50%;

Filler 40%;

Accelerator 7%;

Vulcanizing agent 0.5%;

Lubricant 1%;

Plasticizer 0.8%;

Foaming agent 0.7%.

Example 4

A method for preparing a bra mold cup, comprising the following steps:

E11: providing any of the above examples 1-3 high temperature resistant latex;

E12: The high temperature resistant latex is subjected to a pneumatic cup setting machine, and is heated at 140-180 ° C for 2-4 minutes, and then immediately placed in the same mold holder for cold pressing for 2 minutes.

The high temperature resistant latex starting material (block shape) obtained in Example 1-3 is shown in FIG. 1; the bra mold cup product prepared in Example 4 is shown in FIG. 2; wherein FIG. 2(a) is a high temperature resistant latex coated fabric. The product map of the hot press setting after the residence; Fig. 2(b) is the product diagram of the direct hot pressing setting of the high temperature resistant latex.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. Within the scope.

Claims

A high temperature resistant latex characterized in that the high temperature resistant latex comprises the following mass percentage components based on 100% of the total mass of the high temperature resistant latex:

Natural latex 45-60%;

Filler 35-45%;

Accelerator 2-7%;

Vulcanizing agent 0.5-2%;

Lubricant 1-4%;

Plasticizer 0.3-2%;

Foaming agent 0.3-8%.
The high temperature resistant latex of claim 1 wherein said filler comprises calcium carbonate.
The refractory latex according to claim 1, wherein the accelerator comprises zinc oxide and/or magnesium oxide.
The high temperature resistant latex according to claim 1, wherein the plasticizer comprises di(2-ethylhexyl) adipate and /diisooctyl phthalate.
The refractory latex according to claim 1, wherein said lubricant comprises alkane oil, diethyl phthalate, tetradecylcycloheptasiloxane, palmitic acid, stearic acid and oleic acid. At least one; and/or

The blowing agent includes at least one of azodicarbonamide, carbon dioxide, and nitrogen; and/or

The vulcanizing agent includes sulfur.
A method for preparing a high temperature resistant latex, comprising the steps of:

The components and contents thereof of the high temperature resistant latex according to any one of claims 1 to 5 are respectively weighed into raw materials of the respective components;

The natural latex is subjected to a first heat softening treatment, and then the lubricant, the plasticizer and the filler are added to obtain a first mixture;

The first mixture is subjected to a second heat softening treatment, and then the vulcanizing agent and the accelerator are added to be mixed to obtain a second mixture;

The foaming agent is added to the second mixture to perform a foaming treatment to obtain the high temperature resistant latex.
A close-fitting garment comprising a styling material in contact with human skin, characterized in that the styling material comprises the refractory latex of any of claims 1-5.
The intimate garment of claim 7, wherein the intimate garment comprises a bra cup and/or a hip pad.
A method for preparing a close-fitting garment, comprising the steps of:

Providing the high temperature resistant latex of any of claims 1-5;

The high temperature resistant latex is placed in a setting machine for hot pressing setting treatment.
The preparation method according to claim 9, wherein the setting machine is a pneumatic cup setting machine; and/or

The thermoforming process has a temperature of 140-180 ° C and a time of 2-4 min; and/or

The hot press setting process further includes a cold press treatment step.