CN115897054A - Method for developing heat-shrinkable non-woven mask base material by using castor silkworm flat filaments - Google Patents
Method for developing heat-shrinkable non-woven mask base material by using castor silkworm flat filaments Download PDFInfo
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Abstract
The invention relates to the technical field of health care skin care materials, in particular to a method for developing a thermal shrinkage non-woven mask base material by using castor silkworm flat yarns; the method comprises the steps of preparing castor silkworm flat filaments, removing impurities, performing post-treatment, drafting pretreatment, fibrillation treatment and non-woven material treatment; the drafting pretreatment specifically comprises the following steps: p1: selecting unidirectional stretching equipment; p2: clamping the castor silkworm flat silk subjected to impurity removal treatment in two chucks of unidirectional stretching equipment in P1, stretching, stopping stretching after a set elongation is reached, and keeping for 15-20min so as to stabilize the size of the castor silkworm flat silk; p3: taking the castor bean silkworm flat silk in the P2 away from the unidirectional stretching equipment; the flat plate filaments are pulled up in one direction to be in the same direction, and the fiber length difference is small through the short fiber treatment, so that the subsequent processing and forming of the spunlace non-woven fabric are facilitated.
Description
Technical Field
The invention relates to the technical field of health-care skin-care materials, in particular to a method for developing a heat-shrinkable non-woven mask base material by using castor silkworm flat filaments.
Background
The castor silkworm is a wild silkworm growing in the field, the castor silkworm is the third big silkworm next to the mulberry silkworm and the tussah silkworm in the world, one end of the castor silkworm cocoon is provided with a small hole, so that the reeled silk is short, generally only 15-25 m, the fineness deviation is large, the silk reeling can not be carried out between 0.83-1.65 dtex, the application of the castor silk in China and abroad at present is mainly focused on silk spinning, or silk quilt processing, or the research and development of composite materials are carried out in a mode of regenerating fibroin, and because the cocoons produced in the traditional cocooning mode can be deeply processed by the links of cocoon stripping, cocoon cooking, silk taking and the like, time and labor are wasted, and the application and popularization are greatly limited; silkworm chrysalis in silkworm cocoons can carry out metabolism activity in a specific period, a large amount of excrement is generated, cocoon materials are polluted and are not easy to clean, cocoon peeling is needed to remove the silkworm chrysalis at the beginning of refining, the post-processing process flow is long, silk quality is damaged due to deep impurity removal, a large amount of short fibers are generated in the subsequent cotton opening process, and the produced product is low in strength and high in evenness;
the flat silk is also called as 'flat cocoon' or 'flat cocoon', which breaks the physiological habit of spinning and cocooning of silkworms, enables the silkworms not to serve as cocoons to be bound by themselves, and forms square or round cocoon paper, also called as 'silk', by spinning silk in a flat object, 1 to tens of thousands of silkworms can be put into different flat carriers to manufacture the flat cocoon paper with different specifications, thicknesses and shapes according to the requirements;
in addition, silk contains 18 amino acids necessary for human bodies and is widely used in facial mask products, and frequent use of the silk facial mask can keep skin moist and tender for a long time, quickly smooth fine lines, compact and regain elasticity, delay aging and relaxation, supplement collagen properly, strengthen skin elasticity and tightness, and increase skin luster; researches show that the silk mask mainly has health care and nutrition effects on facial skin and mainly comprises the following sericin components:
the silk mask on the existing market mainly has three forms: firstly, fibroin is added into a facial mask to prepare the silk facial mask, but the extraction of the fibroin is carried out by silkworm cocoons, silk and the like, and the technical process is complex; secondly, the silk short fibers are made into non-woven fabrics in a non-woven form and used for the mask base fabric, but the non-woven processes such as single cocoon treatment (complex links such as cocoon stripping, cocoon cooking, silk taking and the like), impurity removal, cutting, carding, needling (or spunlacing) and the like are needed, so that the process is long; thirdly, silkworm cocoons without silkworm pupas are opened to directly prepare silk net films for the mask base cloth, but complex processing such as cocoon washing, cocoon dissolving, net forming, airing and the like is still needed;
but the mask materials on the current market do not have the thermal shrinkage effect, can not shrink pores and tighten skin in the process of pasting the mask on the face, and can better resist wrinkles and remove wrinkles, thereby influencing the using effect of the mask.
Disclosure of Invention
In order to make up for the defects of the prior art and solve the technical problems in the background art, the invention provides a method for developing a heat-shrinkable non-woven mask base material by using castor silkworm flat filaments.
The invention is realized by the following technical scheme: a method for developing a thermal shrinkage non-woven mask base material by using a castor silkworm flat filament comprises the steps of preparing the castor silkworm flat filament, removing impurities, performing post-treatment, drafting pretreatment, fibrillation treatment and non-woven material treatment; wherein, the first and the second end of the pipe are connected with each other,
the impurity removal post-treatment specifically comprises the following steps:
m1: removing the castor silkworms after spinning from the surface of the flat silk, and removing solid impurities on the flat silkworms;
m2: carrying out high-temperature high-pressure ultrasonic oscillation water impurity removal and disinfection treatment on the castor silkworm flat filaments in the M1;
m3: repeatedly washing the castor silkworm flat silk in the M2 with distilled water for 3-5 times;
the drafting pretreatment specifically comprises the following steps:
p1: selecting unidirectional stretching equipment;
p2: clamping the castor bean silkworm flat silk subjected to impurity removal post-treatment in two clamping heads of a one-way stretching device in P1, stretching, stopping stretching after a set elongation is reached, and keeping for 15-20min so as to stabilize the size of the castor bean silkworm flat silk;
p3: taking the castor silkworm flat silk in the P2 away from the unidirectional stretching equipment.
Preferably, the preparation of the castor silkworm flat filament specifically comprises the following steps:
s1: feeding newly hatched silkworm from silkworm eggs into a rearing tray to feed castor leaves, cassava leaves or ailanthus leaves, and feeding ecdysone when each group of silkworms are mature by 10% -15% to 5 years old, wherein the ecdysone can shorten the five-year-old period of the castor silkworms by 2-3 days so that the cocooning time of the castor silkworms is consistent, and fully excreting and urinating when more than 95% of the mature silkworms appear;
s2: after the mature silkworms completely excrete the excrement and urine, the silkworms are treated according to the ratio of 200-300 mature silkworms of 5 years/m 2 Uniformly spreading the silk on a silk-spinning plate according to the proportion of the silk-spinning plate, slowly spinning silk strands by silkworms, and finishing spinning after 40-50 hours to form complete frontal flat plate silk.
Preferably, the short fibrillation treatment is to cut the castor silkworm flat filaments at equal intervals by using a mechanical cutter according to a cutting distance of 40-50 mm.
Preferably, the nonwoven material treatment comprises in particular: fiber raw materials, opening and mixing, carding and forming a web, pre-wetting, forward and reverse spunlacing, post-finishing, drying and winding; the fiber raw materials comprise castor silkworm flat silk subjected to short-fiber treatment and thermal shrinkage fiber; the mixing proportion of the two raw materials is (40%: 60%) - (60%: 40%), and the heat-shrinkable fiber is a shape memory polymer material capable of responding to body temperature.
Preferably, the shape memory polymer material is a blend which is prepared by uniformly mixing polypropylene carbonate and polycaprolactone or polyethylene oxide or polylactic acid and then carrying out melt plasticizing processing and can realize the shape memory performance under the condition of human body temperature.
Preferably, in the impurity removal and disinfection treatment by the high-temperature high-pressure ultrasonic oscillation water, the bath ratio is 1:30, the temperature is 100-110 ℃, the working pressure is 0.10-0.15Mpa, and the time is 10-20min; the ultrasonic frequency is 30-50kHz, the power is 1.0-1.5kw, and the time is 10-20min.
Preferably, the stretching force range of the uniaxial stretching device is as follows: 5N-10N, uniaxial tensile elongation: 20% -30%, stretching rate: 50-100mm/min.
The invention has the beneficial effects that:
the method is convenient, feasible and easy to implement, the processing procedures are reduced, the produced flat silk is used as a raw material for processing the spunlace non-woven fabric base film substrate, the procedures of cocoon peeling, silkworm pupa waste treatment and the like are omitted, excessive impurity removal and cleaning procedures are not required in the later period, and meanwhile, the flat silk is different from the silkworm cocoon, so that silkworms can spin in a wide space instead of a limited space (silkworm cocoon), the orientation degree and the crystallinity degree of the silk are good, the strength and the color of the silk are superior to those of the traditional processing method; in addition, the low-temperature heat-shrinkable material is mixed, so that the mask has heat-shrinkable property in the use process and has better beautifying effect.
Drawings
FIG. 1 is a process flow diagram of the drafting pretreatment of the flat silk of ricinus communis in the invention;
FIG. 2 is a process flow diagram of impurity removal post-treatment of the flat silk of ricinus communis in the invention;
FIG. 3 is a process flow diagram of the preparation of the flat silk of ricinus communis.
Detailed Description
The technical solutions of the present invention are further described in detail with reference to the drawings and specific examples so that those skilled in the art can better understand the present invention and can implement the present invention, but the examples are not intended to limit the present invention, and in addition, specific weight, type, quantity, etc. appearing in the examples are only preferred examples.
The first embodiment is as follows:
a method for developing a thermal shrinkage non-woven mask base material by using a castor silkworm flat filament comprises the steps of preparing the castor silkworm flat filament, removing impurities, performing post-treatment, drafting pretreatment, fibrillation treatment and non-woven material treatment; wherein the content of the first and second substances,
the impurity removal post-treatment specifically comprises the following steps:
m1: removing the castor silkworms after spinning from the surface of the flat silk, and removing solid impurities on the flat silkworms;
m2: carrying out high-temperature high-pressure ultrasonic oscillation water impurity removal and disinfection treatment on the castor silkworm flat filaments in the M1;
m3: repeatedly washing the flat silk of ricinus communis in M2 with distilled water for 3-5 times.
In the high-temperature high-pressure ultrasonic oscillation water impurity removal and disinfection treatment, the bath ratio is 1:30, the temperature is 100-110 ℃, the working pressure is 0.10-0.15Mpa, and the time is 10-20min; ultrasonic frequency of 30-50kHz, power of 1.0-1.5kw, time of 10-20min;
carry out high frequency mechanical vibration to castor-oil plant silk through ultrasonic oscillation effect, "cavitation" effect that produces on the silk surface accelerates the separation of impurity and silk attached to on the silk.
The drafting pretreatment specifically comprises the following steps:
p1: selecting unidirectional stretching equipment;
p2: clamping the castor silkworm flat silk subjected to impurity removal treatment in two chucks of unidirectional stretching equipment in P1, stretching, stopping stretching after a set elongation is reached, and keeping for 15-20min so as to stabilize the size of the castor silkworm flat silk;
p3: taking the castor silkworm flat silk in the P2 away from the unidirectional stretching equipment;
the stretching force range of the unidirectional stretching equipment is as follows: 5N-10N, uniaxial tensile elongation: 20% -30%, stretching rate: 50-100mm/min;
the castor silkworm is characterized in that the silk fiber is arranged on the flat board, and the silk fiber is crossed with the flat board, so that the silk fiber is arranged on the flat board, and the silk fiber is crossed with the silk fiber.
The preparation method of the castor silkworm flat filament specifically comprises the following steps:
s1: feeding newly hatched silkworm from silkworm eggs into a rearing tray to feed castor leaves, cassava leaves or ailanthus leaves, and feeding ecdysone when each group of silkworms are mature by 10% -15% to 5 years old, wherein the ecdysone can shorten the five-year-old period of the castor silkworms by 2-3 days so that the cocooning time of the castor silkworms is consistent, and fully excreting and urinating when more than 95% of the mature silkworms appear;
s2: after the mature silkworms are completely discharged excrement and urine, the silkworms are treated according to the ratio of 200-300 mature silkworms of 5 years/m 2 Uniformly spreading the silk on a silk-spinning plate according to the proportion of the silk-spinning plate, slowly spinning silk strands by silkworms, and finishing spinning after 40-50 hours to form complete frontal flat plate silk.
As a specific embodiment of the invention, the short fibrillation treatment adopts a mechanical cutter to cut the castor silkworm flat filaments at equal intervals according to the cutting distance of 40-50 mm;
because partial silks are crossed in the flat-plate silks, the length of single fibers in each strip section is between 35 and 55 after cutting, so that the dimensional stability is ensured.
As a specific embodiment of the present invention, the nonwoven material treatment specifically comprises: fiber raw materials, opening and mixing, carding and forming a web, pre-wetting, forward and reverse spunlacing, post-finishing, drying and winding; the fiber raw materials comprise castor silkworm flat silk subjected to short-fiber treatment and thermal shrinkage fiber; the mixing proportion of the two raw materials is (40%: 60%) - (60%: 40%), and the heat-shrinkable fiber is a shape memory polymer material capable of responding to body temperature;
the shape memory polymer material is a blend which is prepared by uniformly mixing polypropylene carbonate and polycaprolactone or polyethylene oxide or polylactic acid and then carrying out melt plasticizing processing and can realize the shape memory performance under the condition of human body temperature;
the thermal shrinkage reaction temperature is 30-45 ℃, the thermal shrinkage rate is 5-10%, the length of the thermal shrinkage fiber is 40-50mm, and the fineness is 5-6dtex;
wherein:
opening and mixing: A035E-TYPE MIXED COTTON BREAK MACHINE
Carding to form a net: AS181A; and is shown in table 1 below:
and (3) positive and negative spunlace: model SF-W1571 spunlace machine; the number of the water stabs is 7-12, the common water pressure is 60-250Bar, and the pressure of the water stabs is set to be low → high → low;
the specifications of the mask base material finally formed by the method are as follows: the mesh number (the number of the meshes in a screen with the width of 1 inch (25.4 mm)) is more than or equal to 300 (meshes/inch), and the aperture is 0.05mm-0.2mm, so that the comfortable ventilation and moisture retention of the facial skin are ensured;
the mask base material has a thermal shrinkage rate of 5-10% at a temperature of 30-45 ℃ (human face skin temperature), and can effectively cause pore shrinkage, wrinkle resistance and crease resistance;
the thermal shrinkage is calculated according to GB/T34848-2017 test method for shrinkage performance of thermal shrinkage film:
R＝((L1-L2)/L1)×100；
wherein:
r- -shrinkage,%;
l1- -sample length before heating in millimeters (mm);
l2- -the length of the specimen after shrinkage in millimeters (mm);
when the mask is used, the mask base material is processed into the mask according to the processing mode of the mask, the mask is attached to the face skin, the castor silkworm natural sericin on the mask nourishes the skin, and the mask is antibacterial and moisturizing, and the thermal shrinkage fibers shrink along with the rise of the temperature of the mask material, so that the mask shrinks, the face skin shrinks, pores are reduced, the skin is compact, the effects of beautifying and maintaining the skin are achieved, and no toxic or side effect is caused;
in addition, flat silk is produced as a raw material for processing the spunlace non-woven cloth cover membrane substrate, so that the processes of cocoon peeling, silkworm pupa waste treatment and the like are omitted, excessive impurity removal cleaning processes are not needed in the later period, meanwhile, the flat silk is different from the silkworm cocoon, silkworms spin in a wide space instead of a limited space (the silkworm cocoon), the orientation degree and the crystallinity of the silk are good, the strength, the color and the like of the silk are superior to those of the traditional processing method, and meanwhile, the low-temperature heat-shrinkable material is mixed, so that the mask has heat-shrinkable performance in the using process, and the beautifying effect is better.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (7)
1. A method for developing a thermal shrinkage non-woven mask base material by using a castor silkworm flat filament is characterized by comprising the steps of preparing the castor silkworm flat filament, removing impurities, performing post-treatment, drafting pretreatment, short fibrillation treatment and non-woven material treatment; wherein the content of the first and second substances,
the impurity removal post-treatment specifically comprises the following steps:
m1: removing the castor silkworms after spinning from the surface of the flat silk, and removing solid impurities on the flat silkworms;
and M2: carrying out high-temperature high-pressure ultrasonic oscillation water impurity removal and disinfection treatment on the castor silkworm flat filaments in the M1;
and M3: repeatedly washing the castor silkworm flat silk in the M2 with distilled water for 3-5 times;
the drafting pretreatment specifically comprises the following steps:
p1: selecting unidirectional stretching equipment;
p2: clamping the castor silkworm flat silk subjected to impurity removal treatment in two chucks of unidirectional stretching equipment in P1, stretching, stopping stretching after a set elongation is reached, and keeping for 15-20min so as to stabilize the size of the castor silkworm flat silk;
p3: taking the castor silkworm flat silk in the P2 away from the unidirectional stretching equipment.
2. The method for developing the heat-shrinkable non-woven mask base material by using the castor silkworm flat filament as claimed in claim 1, wherein the preparation of the castor silkworm flat filament specifically comprises the following steps:
s1: taking newly hatched newly-hatched silkworms from silkworm eggs, feeding castor leaves, cassava leaves or ailanthus leaves in a feeding plaque, feeding ecdysone when each group of silkworms are mature by 10-15% at the age of 5, wherein the ecdysone can promote the five-year-old stage of the castor silkworms to be shortened by 2-3 days, so that the cocooning time of the castor silkworms is consistent, and fully excreting and urinating when more than 95% of the mature silkworms appear;
s2: after the mature silkworms are completely discharged excrement and urine, the silkworms are treated according to the ratio of 200-300 mature silkworms of 5 years/m 2 Uniformly spreading the silk on a spinning plate according to the proportion of the spinning plate, slowly spinning silk threads by silkworms, and finishing spinning after 40-50 hours to form complete frontal flat silk.
3. The method for developing the heat-shrinkable non-woven mask base material from the castor silkworm flat wire according to claim 1, wherein the fibrillation treatment is carried out by cutting the castor silkworm flat wire at equal intervals by a mechanical cutter according to a cutting distance of 40-50 mm.
4. The method for developing the heat-shrinkable non-woven mask substrate by using the castor silkworm flat filament as claimed in claim 1, wherein the non-woven material treatment specifically comprises: fiber raw materials, opening and mixing, carding and forming a web, pre-wetting, forward and reverse spunlacing, post-finishing, drying and winding; the fiber raw materials comprise castor silkworm flat filaments subjected to short fibrillation treatment and thermal shrinkage fibers; the mixing proportion of the two raw materials is (40%: 60%) - (60%: 40%), and the heat-shrinkable fiber is a shape memory polymer material capable of responding to body temperature.
5. The method for developing the heat-shrinkable non-woven mask substrate by the castor silkworm flat filament according to claim 4, wherein the shape memory polymer material is a blend which is prepared by uniformly mixing polypropylene carbonate and polycaprolactone or polyethylene oxide or polylactic acid and then carrying out melt plasticizing processing and can realize the shape memory performance under the condition of human body temperature.
6. The method for developing the heat-shrinkable non-woven mask base material by using the castor silkworm flat filaments as claimed in claim 1, wherein in the high-temperature high-pressure ultrasonic oscillation water impurity removal and disinfection treatment, the bath ratio is 1:30, the temperature is 100-110 ℃, the working pressure is 0.10-0.15Mpa, and the time is 10-20min; the ultrasonic frequency is 30-50kHz, the power is 1.0-1.5kw, and the time is 10-20min.
7. The method for developing the heat-shrinkable non-woven mask substrate by using the castor silkworm flat wire as claimed in claim 1, wherein the stretching force range of the unidirectional stretching equipment is as follows: 5N-10N, uniaxial tensile elongation: 20% -30%, stretching rate: 50-100mm/min.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116949669A (en) * | 2023-07-19 | 2023-10-27 | 西南大学 | Water-absorbing and moisturizing flat silk membrane and preparation method and application thereof |
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2022
- 2022-11-02 CN CN202211364845.XA patent/CN115897054A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116949669A (en) * | 2023-07-19 | 2023-10-27 | 西南大学 | Water-absorbing and moisturizing flat silk membrane and preparation method and application thereof |
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