CN112323232A

CN112323232A - Double-faced flocked fabric bra and preparation method thereof

Info

Publication number: CN112323232A
Application number: CN202011156534.5A
Authority: CN
Inventors: 王光彪
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-26
Filing date: 2020-10-26
Publication date: 2021-02-05

Abstract

The invention belongs to the technical field of functional fiber fabrics, and particularly relates to a double-faced flocked fabric bra and a manufacturing process thereof. The invention adopts sarcandra glabra viscose fiber and collagen fiber to blend and prepare blended yarn, the blended yarn is interwoven with chinlon/spandex coated yarn to prepare health-care functional mesh fabric, then the health-care functional mesh fabric is subjected to double-sided flocking process treatment to obtain double-sided flocking health-care functional fabric, and then the double-sided flocking fabric bra is prepared by utilizing underwear forming equipment. The bra disclosed by the invention not only has the beauty, the three-dimensional property and the hand feeling of the double-sided flocking fabric, but also has the health care effect, and by applying the collagen modified polyamide fiber and the sarcandra glabra viscose fiber to bra products, the collagen can improve the moisture absorption and water locking performance of the fibers, and can moisten, moisturize, and moisturize the skin; the sarcandra glabra viscose fiber is a natural herbal antibacterial material, has strong herbal antibacterial factors, inhibits bacterial reproduction and protects human health.

Description

Double-faced flocked fabric bra and preparation method thereof

Technical Field

The invention belongs to the technical field of functional fiber fabrics, and particularly relates to a double-faced flocked fabric bra and a preparation method thereof.

Background

The fabric can be planted with a layer of fluff to improve the beauty, the solid and the hand feeling of the product during screen printing, however, in the prior art, the fluff at the upper end of the obtained fabric is not firmly adhered, the product percent of pass is low, the various requirements of the existing market for the flocked fabric can not be met, and the flocked fluff has single color, low beauty degree and low production efficiency, and can not meet the requirements of industrial production. In order to solve the problems in the prior art, the Chinese invention patent with the patent name of 'a cloth double-sided flocking process and double-sided flocked cloth' and the application number of 201810890304.8 discloses a technical scheme for realizing double-sided flocking on the cloth, and the mirror-image double-sided flocking can be realized on the cloth, so that the three-dimensional dimension of a product is improved, and the style of the product is enriched. However, most of the fabrics used in the process are nylon/polyurethane mesh fabrics, and although the nylon/polyurethane mesh fabrics have good elasticity, the wearing comfort of the nylon/polyurethane mesh fabrics is poor; on the other hand, with the rapid development of society, people pay more and more attention to health value brought by close-fitting clothes, and the single-function textile cannot meet the requirements of the existing market.

With the development of industry and deterioration of environment, the skin of people is exposed to the erosion of various external factors, including irradiation of ultraviolet rays, radiation of electromagnetic waves, deterioration of water quality, skin allergy, etc., and it is necessary to maintain the health of the skin because the skin is the most important safety barrier of the human body. The collagen is a natural fiber, and has the effects of whitening, tightening, pore shrinking, wrinkle resistance, moisturizing and skin moistening on skin, and the like, because the main components in the collagen fiber are protein and fibroin, weak cations, weak pH value, no toxicity, no harm, safety to human bodies, environmental protection, softness of fabric silk, and environmental protection, comfort and health characteristics.

Because the private parts of the human body are in the humid and hot environment wrapped by the textile for a long time, bacteria are easy to breed particularly in spring and summer, and some health problems are caused. The sarcandra glabra fiber is a natural herbal antibacterial material, has strong herbal antibacterial factors, inhibits bacterial reproduction and protects human health.

Disclosure of Invention

The invention aims to provide a double-sided flocking fabric bra which not only has the attractive appearance, the three-dimensional appearance and the hand feeling of double-sided flocking fabrics, but also has the health care effect. According to the invention, the collagen modified polyamide fiber and the sarcandra glabra viscose fiber are applied to the bra product, so that the bra product has better comfort, and the collagen can improve the moisture absorption and water locking performance of the fiber, can moisten and protect skin, is beneficial to the health of human skin, and can improve the functionality of the product; the sarcandra glabra viscose fiber is a natural herbal antibacterial material, has strong herbal antibacterial factors, inhibits bacterial reproduction and protects human health. The bra brings health and beauty to people in the long-term wearing process of people, and meets the requirements of fashionable women. In addition, the mirror image double-sided flocking can be realized on the fabric through the double-sided flocking process, the three-dimensional dimension of the product is improved, the style of the product is enriched, and the requirement of people on the attractive appearance of the product is met.

In order to achieve the purpose, the invention adopts the following technical scheme:

a double-faced flocking fabric bra is prepared by blending sarcandra glabra viscose fibers and collagen modified polyamide fibers to prepare blended yarns, interweaving the blended yarns with polyamide/spandex coated yarns to prepare a health-care functional netting fabric, then carrying out double-faced flocking process treatment on the health-care functional netting fabric to obtain a double-faced flocking health-care functional fabric, and then preparing the double-faced flocking fabric bra by utilizing underwear forming equipment.

The collagen modified polyamide fiber is prepared by blending and spinning polyamide graft modified collagen and polyamide. The preparation process comprises the following steps:

(1) preparing spinning solution

Preparing a NaSCN solution, then placing the prepared NaSCN solution into a reaction container, heating in a water bath, adding polyamide graft modified collagen powder into the NaSCN solution, stirring and dissolving, adding polyamide after the polyamide graft modified collagen powder is completely dissolved, continuously stirring and dissolving to fully mix the two, stopping stirring, and keeping the temperature for 12-48h for later use;

(2) spinning process

The method comprises the following process flows: raw materials → dissolution → filtration → deaeration → measurement → spinning → solidification → pre-drafting → water washing and stretching → oiling → shaping → winding, and finally obtaining the spun fiber for standby;

(3) post-treatment

And (3) performing densification treatment on the spun fiber prepared in the step (2) in an electrothermal blowing drying oven to obtain the collagen modified polyamide fiber.

In the process for preparing the spinning solution, the addition amount of the polyamide graft modified collagen powder in the spinning solution is not more than 20%. In the post-treatment process, the densification treatment condition of the collagen modified polyamide fiber is that the collagen modified polyamide fiber is treated for 90-120 s at 80 ℃.

The sarcandra glabra viscose fiber is prepared by crushing sarcandra glabra extract by utilizing a nano technology and a microcapsule technology, and then blending and spinning the sarcandra glabra extract serving as an antibacterial agent and a viscose spinning solution. In the spinning process, the sarcandra glabra effective components are uniformly dispersed into the viscose spinning solution to carry out blending reaction with the viscose components, so that intermolecular copolymerization between the sarcandra glabra effective components and the viscose is fully realized, the sarcandra glabra spinning solution is a physical reaction, and the original functions of sarcandra glabra cannot be influenced. Because the combination is polar molecule combination under the blending condition, the sarcandra glabra can be permanently and uniformly combined with the viscose substrate, and a permanent antibacterial effect is achieved. The effective components of the sarcandra glabra fiber are taken from natural plants, the fiber production process is carried out in a physical mode, namely a blending mode, the green characteristics of the sarcandra glabra natural plants are kept, and the sarcandra glabra fiber belongs to green antibacterial fiber harmless to human bodies. Moreover, the sarcandra glabra viscose fiber has an elliptical fiber section, so that the manufactured knitwear has smooth hand feeling and soft touch.

The invention also discloses a manufacturing process of the double-sided flocked fabric bra, which comprises the following steps:

(1) the blended yarn is prepared by blending the collagen modified polyamide fiber and the sarcandra glabra viscose fiber, and the preparation process flow is as follows: a blowing and carding process → a combing process → a merging and roving process → a spinning process → a spooling process;

(2) interweaving the blended yarn prepared in the step 1 with chinlon/spandex coated yarn to prepare the health-care functional mesh fabric, wherein the specific process flow is as follows: weaving process → dyeing and finishing process → sizing process;

(3) carrying out double-sided flocking process treatment on the health-care functional mesh fabric prepared in the step 2 to obtain double-sided flocking health-care functional fabric;

(4) and (4) preparing the double-sided flocking health care functional fabric prepared in the step (3) into the double-sided flocking fabric bra by utilizing underwear forming equipment.

The specific process steps of the double-sided flocking process in the step 3 are as follows:

(1) a first silk plate and a second silk plate which are mirror images are printed by using the set patterns;

(2) aligning the first silk screen printing plate and the second silk screen printing plate on a machine to ensure that the set patterns of the first silk screen printing plate and the second silk screen printing plate are completely overlapped, placing the first silk screen printing plate at the bottom, paving a health-care functional net cloth fabric on the first silk screen printing plate, covering the second silk screen printing plate on the first silk screen printing plate, clamping the health-care functional net cloth fabric between the first silk screen printing plate and the second silk screen printing plate, and printing the first silk screen printing plate and the second silk screen printing plate according to the set patterns while vertically aligning and laminating in opposite directions;

(3) respectively brushing silica gel on the first silk printing plate and the second silk printing plate by using a first scraper and a second scraper simultaneously, wherein the viscosity of the silica gel is 35-50M Pa.s; the using pressure of the first scraper and the second scraper is 2-4 KG;

(4) inputting the health-care functional mesh fabric cloth fabric finished by brushing the glue into a flocking box house for flocking, wherein the flocking time of the flocking box house is 12-15 s;

(5) drying the health-care functional mesh fabric after flocking, wherein the drying temperature is 145-;

(6) removing the residual velvet and outputting to obtain the double-sided flocking health-care functional fabric.

Advantageous effects

The invention discloses a double-sided flocking fabric bra, which applies collagen modified polyamide fiber to bra products, has better comfort, improves the hygroscopicity and water locking performance of the fiber by collagen, and improves the functionality of the products. The invention uses sarcandra glabra viscose fiber to prepare the ecological antibacterial bra, the sarcandra glabra viscose fiber is a natural plant herbaceous antibacterial material, has strong herbaceous bacteriostatic factors, inhibits bacterial reproduction, protects human health, and the sarcandra glabra viscose fiber has an elliptical fiber section, so that the knitted fabric prepared by the sarcandra glabra viscose fiber has smooth hand feeling and soft touch feeling, and the processing process does not add any chemical substance, thereby having permanent antibacterial effect. The double-sided flocking fabric bra disclosed by the invention has the advantages of attractive appearance, three-dimensional appearance and hand feeling of double-sided flocking fabric, has the health care effect, brings health and beauty to people in the long-term wearing process of people, very meets the demand of fashionable women, has better economic and social benefits, and has good market prospect.

The collagen modified polyamide fiber provided by the invention utilizes the polyamide graft modified collagen and polyamide to carry out blended spinning, determines the optimal collagen content through the influence of different content ratios on the mechanical property of the fiber, and researches the influence of different post-treatment conditions on the fiber property, thereby determining the optimal post-treatment process. The collagen modified polyamide fiber has better comfort, and the collagen can improve the hygroscopicity and the water locking property of the fiber and improve the functionality of the product.

The sarcandra glabra viscose fiber is prepared by crushing sarcandra glabra extracts by utilizing a nano technology and a microcapsule technology, and then blending the natural sarcandra glabra extracts serving as antibacterial agents with viscose spinning solution. The natural sarcandra glabra extract not only keeps the excellent wearability of common viscose fiber such as moisture absorption, air permeability and the like, but also gives full play to the bacteriostatic and anti-inflammatory effects of the natural sarcandra glabra extract and meets the requirements of people on functional textiles. In the spinning process, the sarcandra glabra effective components are uniformly dispersed into the viscose spinning solution to carry out blending reaction with the viscose components, so that intermolecular copolymerization between the sarcandra glabra effective components and the viscose is fully realized, the sarcandra glabra spinning solution is a physical reaction, and the original functions of sarcandra glabra cannot be influenced. Because the combination is polar molecule combination under the blending condition, the sarcandra glabra can be permanently and uniformly combined with the viscose substrate, and a permanent antibacterial effect is achieved. The effective components of the sarcandra glabra fiber are taken from natural plants, the fiber production process is carried out in a physical mode, namely a blending mode, the green characteristics of the sarcandra glabra natural plants are kept, and the sarcandra glabra fiber belongs to green antibacterial fiber harmless to human bodies. Has the following advantages:

1) a brand new green concept: the antibacterial effect of natural plants solves the technical problem of secondary pollution of post finishing for realizing antibacterial effect, and has good antibacterial durability. On the basis of realizing the antibacterial function, the consumption concept of nature, green and health is highlighted.

2) Durable antimicrobial properties: the sarcandra glabra component and the cellulose component in the viscose are combined in a blending mode, so that certain washing fastness of the sarcandra glabra component is ensured, and the antibacterial property of the sarcandra glabra component can still meet the national standard requirement after repeated washing for dozens of times in general.

3) Excellent dyeing property: the sarcandra glabra fiber with the viscose as the matrix also has excellent dyeing performance and can be processed into fabrics with various colors according to requirements. Based on completely reserving the natural and green characteristics of the sarcandra glabra fiber, the natural light yellow of the sarcandra glabra fiber is adopted as a plain natural color. The natural and green characteristics of the sarcandra glabra fiber can be effectively maintained by adopting semi-bleaching processing or adopting a color spinning mode.

Drawings

FIG. 1: the influence relationship of different densification temperatures on the fiber breaking strength is shown;

FIG. 2: the influence of different densification time on the fiber breaking strength is plotted;

FIG. 3: sarcandra glabra viscose fiber cross-section shape diagram;

FIG. 4: a cross-sectional shape diagram of a common viscose fiber;

FIG. 5: a front view of a double-sided flocked fabric brassiere product;

FIG. 6: a reverse side view of a double-sided flocked fabric bra product.

Detailed Description

Hereinafter, the present invention will be described in detail. Before the description is made, it should be understood that the terms used in the present specification and the appended claims should not be construed as limited to general and dictionary meanings, but interpreted based on the meanings and concepts corresponding to technical aspects of the present invention on the basis of the principle that the inventor is allowed to define terms appropriately for the best explanation. Accordingly, the description proposed herein is just a preferable example for the purpose of illustrations only, not intended to limit the scope of the invention, so it should be understood that other equivalents and modifications could be made thereto without departing from the spirit and scope of the invention.

The following examples are given by way of illustration of embodiments of the invention and are not to be construed as limiting the invention, and it will be understood by those skilled in the art that modifications may be made without departing from the spirit and scope of the invention. Unless otherwise specified, reagents and equipment used in the following examples are commercially available products.

Example 1

Preparation of collagen modified polyamide fiber

The optimal collagen content is determined by utilizing the blending spinning of the collagen grafted and modified by polyamide and the polyamide and by the influence of different content ratios on the mechanical property of the fiber, and the influence of different post-treatment conditions on the fiber property is researched, so that the optimal post-treatment process is determined.

1. Test of

(1) Test reagent

Industrial sodium thiocyanate (purity 99%), collagen modified by polyamide grafting, polyamide and deionized water.

(2) Testing instrument

A small wet spinning production line, a constant-temperature water bath, an electrothermal blowing drying box, an electric stirrer, an Instron5565 model dynamometer, an electronic balance (sensing amount 1/10000g), an electronic scale (sensing amount 5g) and a three-neck bottle.

(3) Preparation of samples

1) Preparation of spinning solution

Firstly, preparing a NaSCN solution, controlling the temperature of a water bath kettle at 60 ℃, then placing the prepared NaSCN solution into a three-necked bottle, placing the three-necked bottle into the water bath kettle, adding weighed polyamide graft modified collagen powder into the NaSCN solution, starting an electric stirrer to stir for accelerating dissolution, adding polyamide to continuously dissolve after the collagen is completely dissolved, fully mixing the two, stopping stirring and keeping the temperature for 24 hours for later use. The spinning solutions with different collagen contents are prepared by the method, and the mixing ratio of the collagen to the nylon 66 is respectively 1:9,2:8,3:7,4:6, and 5 spinning solutions such as pure nylon 66 and the like.

2) Spinning process flow

Raw materials → dissolution → filtration → deaeration → measurement → spinning → solidification → pre-drafting → water washing and stretching → oiling → sizing → winding.

3) Post-treatment

And (3) performing densification treatment on the prepared as-spun fibers in an electrothermal blowing drying oven.

4) Testing of linear density and mechanical properties of fibers

The fibres were subjected to linear density measurements using a cut-off weighing method and their mechanical properties were measured using an Instron model 5565 brute force machine.

2. Analysis and discussion of test results

(1) Effect of post-treatment Process on fiber Properties

The purpose of densification is to eliminate a large number of micropores formed in the fiber during the spinning process, so that the fiber structure becomes dense and uniform. In addition to the molecular order structure of the fiber, the aggregate structure becomes an important factor affecting the fiber performance. In the fiber preparation, the densification process plays a role in starting and stopping. The densification process has important influence on the formation and evolution of fiber crystalline state, orientation state structure and the like, and then on the performance of the fiber. The degree of densification is controlled by factors such as temperature, time, and tension, and the densification temperature is generally selected to be above the molecular glass transition temperature. Above this temperature, the segments move easily, causing rearrangement of the macromolecules, shrinkage of the micropores due to the negative pressure caused by the evaporation of water molecules, and the densified fibers become transparent by whitening.

In the analysis and discussion of the effect of densification conditions on fiber properties, the fibers used were all as-spun collagen/polyamide fibers at 10% collagen content under 6 times draw.

1) Effect of densification temperature on fiber Properties

The glass transition temperature of the polyamide fiber is 60-75 ℃, therefore, 60 ℃, 65 ℃, 70 ℃, 75 ℃, 80 ℃ and 90 ℃ are respectively selected to carry out densification treatment on the as-spun fiber for 3min, and the fiber state after densification is shown in table 1.

TABLE 1 fiber densification status at different temperatures

Temperature/. degree.C	State of the fiber
		60	The fiber is whitened and has no sense of transparency
65	The fiber is whitened and has no sense of transparency
		70	The fiber is whitened and has no sense of transparency
75	Partially whitened and not fully densified
		80	The fiber is bright and fully densified
90	The fiber is bright and fully densified

As can be seen from table 1, the collagen/polyamide fibers had a minimum densification temperature of 80 ℃.

Then, the as-spun fibers were densified at 80 ℃, 90 ℃, 100 ℃, 110 ℃, 120 ℃ and 130 ℃ for 3min, and the linear density was measured to be 6.15dtex, and the breaking strength was shown in FIG. 1.

As can be seen from fig. 1: at a densification temperature of 80 ℃, the breaking strength of the fiber is the highest, and the breaking strength of the fiber is slightly reduced with the increase of the temperature. This is because in the processing environment higher than the glass transition temperature of the macromolecule, the macromolecule has a strong crystallization tendency, which promotes the fiber to have a larger grain size and a larger grain boundary surface, which tends to cause stress concentration on the grain boundary during drawing, thereby reducing the tensile strength. Therefore, a suitable densification temperature will help to improve the mechanical properties of the fiber. This gives a suitable densification temperature for the collagen/polyamide fibres of 80 ℃.

2) Effect of densification time on fiber Properties

20cm of the as-spun fiber was densified at 80 ℃ for 50, 80, 110, 140, 170, and 180 seconds, respectively, and the fiber shrinkage and breaking strength after densification were measured, respectively, and the results are shown in Table 2 and FIG. 2, respectively.

TABLE 2 Effect of different densification time fibers on fiber shrinkage

Time/s	50	80	110	140	170	180
							Initial length/cm	20	20	20	20	20	20
Length/cm after densification	15.5	15.2	15.2	15.3	15.2	15.2
							Shrinkage/% of	22.5	24	24	23.5	24	24

As can be seen from table 2: the fibers stabilized after 80 seconds of densification and did not shrink, indicating structural stabilization. The results of the breaking strength test for these samples are shown in fig. 2.

FIG. 2 shows that: the densification time is between 80 and 180s, the variation of the breaking strength of the fiber after densification is not large and is between 2.0 and 2.1cN/dtex, and the breaking strength is basically maintained at 80 s. Therefore, from the above experimental analysis, the conditions of densification can be determined: the fiber retraction is stable under the condition of 80 ℃, generally between 90 and 120 seconds, and the heating is not required to be carried out for too long time, and the time can be properly increased due to the fact that the linear density of the fiber is increased or the content of the added collagen is increased, so that the moisture releasing speed is reduced, but the time is not required to exceed 180 seconds.

(2) Effect of different collagen content on fiber Performance

The spinning is carried out under the same process parameters by using the prepared spinning solutions with the collagen and polyamide ratios of 0:1, 1:9,2:8,3:7 and 4:6 respectively (namely, the collagen contents are 0%, 10%, 20%, 30% and 40% respectively), the stretching ratios are all 6 times, but the spinning solution with the collagen content of 40% has a large amount of broken filaments in a stretching bath during 6 times of stretching, the spinning is difficult to smoothly carry out, and the stretching is reduced to 4.2 times, so that the spinning can be smoothly carried out. After the post-treatment of each fiber under appropriate conditions, the mechanical properties of each fiber were measured, and the results are shown in table 3.

TABLE 3 Effect of different collagen contents on fiber Properties

Varieties of fiber	Breaking strength/(CN.dtex)^-1)	Elongation at break/%
			Collagen-free 6-fold draft	2.12	45.21
6 times drafting with 10% collagen	2.06	57.45
			6 times drafting with 20% collagen	1.76	58.30
6 times drafting of 30% collagen	1.40	30.63
			4.2 times of drafting of 40% collagen	1.17	28.96

As can be seen from table 3: the breaking strength of the fiber is gradually reduced as the collagen content in the fiber increases, because the amorphous region in the fiber is increased due to the increase of the collagen content, so that the ratio of the crystalline region is reduced, thereby causing a decrease in the strength of the fiber. However, as long as the content of the collagen is not more than 20 percent, the breaking strength and the breaking elongation of the modified nylon fiber can basically meet the requirements of textile processing. When the content of the modified collagen is 40%, 6-time drafting spinning cannot be performed, probably because the collagen is not completely compatible with the polyamide, the larger the content of the collagen is, the more holes exist in the fiber, the fiber is easy to be broken, and therefore, the phenomena of broken filaments and broken filaments are serious.

Based on the above experiments, we conclude that: the optimal densification temperature of the collagen modified polyamide fiber is 80 ℃, the fiber cannot be completely densified below the optimal densification temperature, and the breaking strength of the fiber is reduced to some extent above the optimal densification temperature; the densification time of the collagen modified polyamide fiber is about 80-120 s, and the collagen modified polyamide fiber does not need to be too long; when the addition amount of the collagen is within 20 percent, the spinning solution has good spinning performance, and the spun fiber has good strength and silky luster, thereby having the value of further developing products; when the addition amount is more than 20%, the fiber strength is remarkably reduced.

Example 2

Preparation of sarcandra glabra viscose fiber

1. Test of

The sarcandra glabra viscose fiber is prepared by crushing sarcandra glabra extract by utilizing a nano technology and a microcapsule technology, and blending and spinning the crushed sarcandra glabra extract and viscose. In the spinning process, the sarcandra glabra effective components are uniformly dispersed into the viscose spinning solution to carry out blending reaction with the viscose components, so that intermolecular copolymerization between the sarcandra glabra effective components and the viscose is fully realized, the sarcandra glabra spinning solution is a physical reaction, and the original functions of sarcandra glabra cannot be influenced.

(1) Test materials

The specifications of sarcandra glabra viscose fiber and common viscose fiber used in the test are both 1.67dtex multiplied by 38 mm.

(2) Test item and test instrument

The test items and test instruments herein are shown in table 4.

TABLE 4 test items and test instruments

2. Test results and analysis

(1) Cross section shape of sarcandra glabra viscose fiber

The cross section shapes of sarcandra glabra viscose fiber and common viscose fiber are shown in figure 3 and figure 4.

As can be seen from a comparison of fig. 3 and 4, the conventional viscose fiber has a cross section with irregular saw-tooth shape at the outer edge and a sheath-core structure. The cross section of the sarcandra glabra viscose fiber is smoother than that of the common viscose fiber, the sarcandra glabra viscose fiber is irregular and round, and the curvature change of the outer edge shape is small. Because the sarcandra glabra viscose fiber has the oval fiber section, the knitted fabric made of the sarcandra glabra viscose fiber has smooth hand feeling and soft touch.

(2) Mechanical property of sarcandra glabra viscose fiber

The basic mechanical performance indexes of the sarcandra glabra viscose fiber and the common viscose fiber in dry and wet states are shown in table 5.

TABLE 5 basic mechanical property indexes of sarcandra glabra viscose fiber and common viscose fiber

As can be seen from table 5: under the normal temperature dry state, the rupture strength of the sarcandra glabra viscose fiber is smaller than that of the common viscose fiber, the rupture strength of the sarcandra glabra viscose fiber is 84.4 percent of that of the viscose fiber, and the rupture elongation is obviously smaller than that of the common viscose fiber. The breaking strength of the sarcandra glabra viscose fiber in a wet state is less than that of a dry state and is 76.4 percent, the breaking strength of the viscose fiber in the wet state is 73.0 percent of that of the dry state, so that the reduction degree of the breaking strength of the sarcandra glabra viscose fiber in the wet state is less than that of a common viscose fiber, the breaking elongation of the sarcandra glabra viscose fiber in the wet state is 1.34 times of that of the sarcandra glabra viscose fiber in the dry state, and the difference between the initial modulus of the sarcandra glabra viscose fiber in the wet state and the initial modulus of the sarcand. It is demonstrated that the addition of sarcandra glabra extract changes the internal structure of the fiber, resulting in a decrease in fiber strength and elongation.

(3) Friction performance of sarcandra glabra viscose fiber

The test contents of the experiment comprise the dynamic and static friction coefficients between fibers, between fibers and a leather roller and between fibers and a metal roller, and the test results are shown in table 6.

TABLE 6 coefficient of dynamic and static friction between sarcandra glabra viscose fiber and common viscose fiber

As can be seen from table 6: the friction coefficients measured by the three friction modes are the friction coefficient between the fibers, the friction coefficient between the fibers and the metal and the friction coefficient between the fibers and the leather roller from small to large in sequence. The dynamic and static friction coefficients of the sarcandra glabra viscose fiber between fibers, between the fibers and a leather roller and between the fibers and a metal roller are all larger than those of the common viscose fiber. This indicates that the addition of the natural sarcandra glabra extract changes the surface morphology of the fibers and increases the frictional properties between the fibers. The larger friction force can lead the sarcandra glabra viscose fiber to have larger cohesive force in the spinning process.

(4) Electrical properties of sarcandra glabra viscose fiber

The mass specific resistance and volume specific resistance of sarcandra glabra viscose fiber and common viscose fiber are shown in table 7.

TABLE 7 Mass and volume specific resistance of the fibers

As can be seen from Table 7, although the sarcandra glabra viscose fibers and the common viscose fibers have specific resistance values of 10 orders of magnitude⁸However, the mass specific resistance and the volume specific resistance of the sarcandra glabra antibacterial viscose fiber are obviously smaller than those of the common viscose fiber. The resistance of the sarcandra glabra viscose fiber is only 64.2 percent of that of the common viscose fiber, so that the addition of the natural sarcandra glabra extract reduces the specific resistance of the fiber to a certain extent, enhances the conductivity of the fiber and can reduce the generation of static electricity of the sarcandra glabra viscose fiber in the spinning process.

(5) Moisture absorption of sarcandra glabra viscose fiber

Moisture regain is a common indicator of the moisture absorption of a fiber. The moisture regain of sarcandra glabra viscose and common viscose are shown in Table 8.

TABLE 8 moisture regain of sarcandra glabra viscose and regular viscose

As can be seen from Table 8, the moisture regain of the sarcandra glabra antibacterial viscose is slightly lower than that of the common viscose. It is demonstrated that the moisture absorption of the fiber is reduced by the addition of the natural sarcandra glabra extract. The moisture absorption performance of the sarcandra glabra viscose fiber is weaker than that of the common viscose fiber, so that the influence of the moisture absorption on the physical properties such as the structure, the shape and the like of the sarcandra glabra viscose fiber is smaller than that of the common viscose fiber, and the previous test results of the mechanical properties prove that the sarcandra glabra viscose fiber has the advantages of being simple in structure, convenient to use and high in reliability.

Example 3

Preparation of double-faced flocked fabric bra

(1) Preparation of blended yarn

Blended yarns were prepared by blending the collagen-modified polyamide fibers obtained in example 1 with the sarcandra glabra viscose fibers obtained in example 2.

The preparation process flow is as follows: the blowing and carding process → the combing process → the drawing and roving process → the spinning process → the winding process. The specific process steps are relatively mature blending processes in the prior art, and are not described herein again.

(2) Preparation of health-care functional mesh fabric

Interweaving the blended yarn of the collagen modified polyamide fiber and the sarcandra glabra viscose fiber prepared in the steps with the nylon/spandex coated yarn to prepare the health-care functional mesh fabric, wherein the specific process flow is as follows: weaving process → dyeing and finishing process → sizing process.

The chinlon/spandex fiber has good strength and toughness and excellent wear resistance and rebound resilience, so the chinlon/spandex fiber is widely used as materials of socks, seamless underwear and the like, but the elasticity of chinlon/spandex high-elasticity yarns can be obviously reduced after the chinlon/spandex is dyed at high temperature, particularly cheese is dyed. In order to avoid the loss of elasticity during the high-temperature dyeing of the chinlon/spandex, a new rare earth low-temperature dyeing process for the chinlon/spandex high-elasticity yarn is researched, and a new one-bath two-step low-temperature dyeing process of firstly neutral and then acid bath is determined. The result shows that the dyeing effect of the process reaches or exceeds the traditional dyeing effect at about 95 ℃, so that the elasticity of the chinlon/spandex high-elasticity yarn is ensured, and meanwhile, the process is beneficial to saving energy and reducing fiber damage.

The sarcandra glabra fiber has poor whiteness due to the existence of natural pigments, and the surface of the fiber is light yellow. Because the alkali resistance and the oxidant resistance of the sarcandra glabra fiber are poorer than those of cotton fiber, the bleaching process of the sarcandra glabra fiber is carried out under the lower alkaline condition, so that the pigment, the wax, the oil stain and the like on the sarcandra glabra fiber are removed under the milder process condition.

And transferring the dyed fabric to a double-faced flocking processing workshop after shrinking, sizing and drying.

(3) Preparation of double-sided flocking fabric with health care function

The method comprises the following steps:

1) a first silk plate and a second silk plate which are mirror images are printed by using the set patterns;

2) the first silk-screen printing plate and the second silk-screen printing plate are arranged on the machine, the first silk-screen printing plate is arranged at the bottom, cloth is laid on the first silk-screen printing plate, the second silk-screen printing plate covers the first silk-screen printing plate, and the cloth is clamped between the first silk-screen printing plate and the second silk-screen printing plate;

3) respectively brushing silica gel on the first silk printing plate and the second silk printing plate by using a first scraper and a second scraper simultaneously;

4) inputting the cloth after the glue brushing into a flocking box room for flocking;

5) drying the flocked cloth;

6) removing the residual velvet and outputting.

The viscosity of the silica gel is 35-50M Pa.s. The first scraper and the second scraper use pressure of 2-4 KG. The flocking time of the flocking box house is 12-15 s. The drying temperature is 145-155 ℃, and the drying time is 2-3 min. And the step 2 also comprises machine-loading and aligning to ensure that the set patterns of the first silk-plate and the second silk-plate are completely overlapped. And the first silk screen plate and the second silk screen plate are aligned up and down and are stacked back to back while printing down according to set patterns.

Mirror image double-sided flocking can be realized on the cloth through a double-sided flocking process, the three-dimensional dimension of a product is improved, the style of the product is enriched, and the requirement of people on the appearance attractiveness of the product is met.

(4) Preparation of double-faced flocked fabric bra

Sewing the double-sided flocking health-care functional fabric obtained in the step through seamless underwear equipment, wherein the machine model of the seamless underwear equipment is as follows: santong Santoni TOP 2-FAST.

Tailoring regulation:

1. the elongation of the stitches at the time of sewing is not less than 100%.

2. Sewing is carried out according to the product sewing process, and the number and the width of the needles cannot exceed the specified size.

3. The measured needle density is measured in the middle of a sewing process.

4. The sewing zigzag height is 0.4 cm.

5. The width of the edge of the overedger is not less than 0.4cm, the width of the four lines is not less than 0.5cm, and the width of the five lines is not less than 0.7 cm.

The front and back side views of the final product, namely the double-sided flocked fabric bra, obtained by the above process steps are shown in fig. 5 and 6, and the corresponding technical indexes of the product are specifically shown in the following table 9:

TABLE 9 technical indexes of the obtained bra made of double-sided flocked cloth

The final product-the bacteriostatic rate of the double-sided flocked fabric bra (20 times of water washing): the bacteriostatic rate of the antibacterial agent to staphylococcus aureus is more than or equal to 80 percent, the bacteriostatic rate of escherichia coli is more than or equal to 70 percent, and the bacteriostatic rate of candida albicans is more than or equal to 60 percent. Because the particularity of the reproductive health parts of the human body and the preparation process of the bra, the antibacterial and deodorant effects are considered, the physiological health is considered, the reproductive system of the human body cannot be damaged, and if the nano material or metal ion antibacterial effect is adopted, certain potential safety and health hazards exist, so the ecological antibacterial bra made of sarcandra glabra fibers of natural plant herbs has powerful herbal antibacterial factors, can protect the physiological health of the human body while inhibiting the bacterial reproduction, and has better innovation.

The bra is an extremely private and close-fitting product, needs to prevent wind and keep warm, needs to be compatible and non-irritant to skin, and simultaneously aims at the requirements of modern urban female lovely sports and body shaping and body beautifying.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims

1. The utility model provides a two-sided flocking cloth brassiere which characterized in that: the sarcandra glabra viscose fiber and the collagen modified polyamide fiber are blended to form blended yarns, the blended yarns are interwoven with the chinlon/spandex coated yarns to form a health-care functional mesh fabric, then the health-care functional mesh fabric is subjected to double-sided flocking process treatment to obtain a double-sided flocking health-care functional fabric, and then the double-sided flocking fabric bra is prepared by utilizing underwear forming equipment.

2. The double-sided flocked fabric brassiere according to claim 1, wherein said collagen-modified polyamide fibers are produced by co-spinning a polyamide-graft-modified collagen with polyamide.

3. The double-sided flocked fabric brassiere according to claim 2, wherein said collagen-modified polyamide fibers are prepared by a specific process comprising:

(1) preparing spinning solution

(2) spinning process

(3) post-treatment

4. The double-sided flocked fabric brassiere according to claim 3, wherein in said process of preparing the spinning solution, the amount of the polyamide graft modified collagen powder added in the spinning solution is not more than 20%.

5. The double-sided flocked fabric brassiere according to claim 3, wherein in said post-treatment process, the densification treatment condition of the collagen-modified polyamide fiber is 80 ℃ for 90-120 s.

6. The double-sided flocked fabric brassiere according to claim 1, wherein said sarcandra glabra viscose fibers are produced by pulverizing sarcandra glabra extracts using nano-and micro-encapsulation techniques and then co-spinning sarcandra glabra extracts as antibacterial agents with a viscose spinning solution.

7. A manufacturing process of a double-sided flocking fabric bra is characterized by comprising the following steps:

(2) interweaving the blended yarn prepared in the step (1) with chinlon/spandex coated yarn to prepare the health-care functional mesh fabric, wherein the specific process flow is as follows: weaving process → dyeing and finishing process → sizing process;

(3) carrying out double-sided flocking process treatment on the health-care functional mesh fabric prepared in the step (2) to obtain double-sided flocking health-care functional fabric;

(4) and (4) preparing the double-sided flocking healthcare functional fabric prepared in the step (3) into the double-sided flocking fabric bra by utilizing underwear forming equipment.

8. The process for manufacturing a double-sided flocked fabric brassiere according to claim 7, wherein said double-sided flocking process of step 3 comprises the following specific process steps: