1. A preparation method of sericin reinforced silk non-woven fabric is characterized by comprising the following steps: the preparation method comprises the following preparation process steps:

step 1, degumming cocoon silk;

step 2, placing the degummed silk into a lapping machine to be processed into a fiber net;

step 3, drying and shaping the prepared silk non-woven fabric at low temperature;

step 4, carrying out reinforced finishing on the silk non-woven fabric by a spraying method or a padding method;

and 5, drying the silk non-woven fabric after sericin finishing at a low temperature.

2. The preparation method of the sericin reinforced silk non-woven fabric according to claim 1, which is characterized in that: before the step 2, the degummed silk is carded into a single fiber state by a carding machine.

3. The preparation method of the sericin reinforced silk non-woven fabric according to claim 1, which is characterized in that: before step 3, the processed silk fiber net is sprayed by high-pressure micro water flow to enable the fibers to be mutually entangled and drafted.

4. The method for preparing the sericin-reinforced silk non-woven fabric according to any one of claims 1 to 3, wherein the sericin-reinforced silk non-woven fabric comprises the following steps: and 3, the thickness of the silk non-woven fabric prepared in the step 3 is 0.15-0.30 mm.

5. The preparation method of the sericin reinforced silk non-woven fabric according to claim 1, which is characterized in that: in the step 1, the cocoon silk is degummed by a hot water method, wherein the temperature of the hot water is 80-110 ℃.

6. The method for preparing the sericin-reinforced silk non-woven fabric according to any one of claims 1 to 5, wherein the sericin-reinforced silk non-woven fabric comprises the following steps: the degumming treatment of the cocoon silk in the step 1 specifically comprises the following steps:

s101, soaking the cocoon shell silk in hot water, wherein sericin is dissolved in the hot water, and fibroin is insoluble;

s102, removing fibroin by a filtering or centrifuging method to obtain a sericin aqueous solution.

7. The preparation method of the sericin reinforced silk non-woven fabric according to claim 6, which is characterized in that: the concentration of the sericin aqueous solution is 0.1-60%.

8. The preparation method of the sericin reinforced silk non-woven fabric according to claim 1, which is characterized in that: and 4, spraying by an additional spraying device, or directly spraying the sericin solution serving as spunlace liquid on the surface of the silk non-woven fabric in a spunlace link, so that the sericin is uniformly spread on the surface of the silk non-woven fabric and even permeates into gaps of the silk non-woven fabric.

9. The preparation method of the sericin reinforced silk non-woven fabric according to claim 1, which is characterized in that: and 4, the padding method is characterized in that the sericin solution is soaked on the silk non-woven fabric in a one-soaking-one-rolling mode, so that the sericin is uniformly spread on the surface of the silk non-woven fabric and even permeates into the silk non-woven fabric.

10. The preparation method of the sericin reinforced silk non-woven fabric according to claim 1, which is characterized in that: the drying temperature in the step 5 is 40-65 ℃.

Background

The silk non-woven fabric is made of pure natural mulberry silk through a spunlace process, and the content of the mulberry silk is one hundred percent. Generally, the silk non-woven fabric is applied to the fields of various daily living materials such as surface layers and facial mask cloth of silk sanitary towels, is soft and breathable, and has natural bacteriostatic effects through detection. However, the silk non-woven fabric produced on the market at present is a spunlace non-woven fabric produced by taking degummed silk as a raw material, only fibroin is used, sericin is not used, and the spunlace non-woven fabric does not have a very obvious health care function; the other kind is sprayed fibroin on the non-woven fabrics of non-silk raw materials production, and the fibroin on this kind of non-woven fabrics surface though has certain health function, but its non-woven fabrics degree of combining with non-silk raw materials production is not good, has restricted non-woven fabrics surface fibroin's adhesion amount, requires the height to follow-up processing, and in addition, the non-woven fabrics of non-silk raw materials production and the laminating of human skin are than relatively poor, influence the high-efficient performance of maintenance repair effect.

Patent CN207373838U discloses an active protein silk non-woven fabric, which comprises a silk non-woven fabric layer, an antibacterial non-woven fabric layer, a needle-punched cotton layer and a polyurethane adhesive layer; the silk non-woven fabric layer is made of natural mulberry silk fibers; the antibacterial non-woven fabric layer is made of antibacterial fibers; the needle-punched cotton layer is made of needle-punched cotton cloth made of pure cotton; the polyurethane adhesive layer is made of modified polyurethane soft rubber; the silk non-woven fabric layer, the antibacterial non-woven fabric layer, the needle punched cotton layer and the polyurethane adhesive layer are sequentially stacked and bonded through EVA hot melt adhesive; fine grid lines are hot-pressed on the surface of the silk non-woven fabric layer. The non-woven fabric is good in comfort level, skin-friendly and smooth, can help skin to maintain metabolism of a surface lipid film, enables the skin to keep elasticity, and is good in antistatic effect, antibacterial performance, moisture absorption and sweat absorption, and good in anti-slip performance. The scheme can not realize the real laminating better with skin of silk non-woven fabrics, and polyurethane glue film high temperature is easily hydrolysised and is reduced viscidity. The materials used in the nonwoven fabric have low anti-allergic property to skin and poor softness.

Patent CN111407675A discloses an electrospun fiber fibroin film, which comprises a woven base film, an electrospun film compounded on one side of the woven base film, and a spunlace nonwoven fabric compounded on the other side of the woven base film; the weaving basement membrane is woven by fine denier polypropylene fiber yarns in a plain weave structure; the electrostatic spinning membrane is a non-woven membrane made of silk fibroin by an electrostatic spinning process; the spunlace non-woven fabric is bonded on the woven base film through hot air. The silk fibroin electrostatic spinning film is used as a functional layer to replace the traditional silk non-woven fabric film, has the advantages of good skin-friendly property, biodegradability, soft and smooth touch, good air permeability, good moisture absorption and release performance and the like, is low in production cost, good in size stability, not easy to tear, more beneficial to directly acting on the skin, capable of being absorbed by the skin of a human body and capable of playing a role in protecting and whitening the skin. The silk fibroin adopted by the invention has a good skin-friendly effect on the use of flat skin, but for silk fibroin, the silk fibroin has the characteristics of skin-friendly property, oxidation resistance and moisture retention.

The capsule-shaped protective layer in the silkworm pupal stage comprises a cocoon shell, a cocoon layer, a pupal lining and the like. The cocoon layer can be used for reeling silk, the cocoon shell is a layer of loose and disordered silk strands on the periphery of the silkworm cocoon, the fibers are thin and fragile, the sericin content is high, and the silk cannot be reeled, so that the silk can only be used as a silk spinning raw material with low application value when being added. Sericin is a water-soluble globular protein, which is composed of 18 kinds of amino acids containing a large number of strong polar groups such as-OH, -COOH, -NH2, etc., which have similar components and functions to natural moisture control factors in human skin stratum corneum, and can make skin smooth, soft and elastic, sericin and its hydrolysate are also natural antioxidants, and its ability to inhibit fat peroxidation is comparable to VC, and in addition, leucine (Tyr), tryptophan (Trp) and phenylalanine (Phe), etc. in sericin can absorb ultraviolet rays, and make skin not suntan and sunburn.

Therefore, how to process the cocoon shell by a process preparation method to obtain high-quality degumming protein in the cocoon shell so as to obtain natural sericin, and endow the silk non-woven fabric with the characteristics of delicate and fragile cocoon shell silk, so that the soft hand feeling and the skin-friendly characteristic of the silk non-woven fabric are enhanced, the additional value of the cocoon shell silk is improved, and the like, which needs to be solved urgently and has important significance.

Disclosure of Invention

Aiming at the defects in the prior art and the advantages of cocoon shell silk and sericin, the invention aims to provide a preparation method of sericin reinforced silk non-woven fabric. The sericin reinforced silk non-woven fabric manufactured by the method not only improves the added value of the cocoon shell silk, but also makes full use of the degummed protein and changes waste into valuable.

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

a preparation method of sericin reinforced silk non-woven fabric comprises the following preparation process steps:

step 1, degumming cocoon silk;

step 2, placing the degummed silk into a lapping machine to be processed into a fiber net;

step 3, drying and shaping the prepared silk non-woven fabric at low temperature;

step 4, carrying out reinforced finishing on the silk non-woven fabric by a spraying method or a padding method;

and 5, drying the silk non-woven fabric after sericin finishing at a low temperature.

Preferably, the thickness of the silk non-woven fabric prepared in the step 3 is 0.15-0.30 mm.

Preferably, before step 2, the degummed silk is carded into a single fiber state by a carding machine for subsequent processing.

Preferably, before step 3, the processed silk fiber net is sprayed with high-pressure fine water flow to entangle the fibers with each other and then drafted.

Preferably, the step 1 is to perform degumming treatment on the cocoon filaments by a hot water method, wherein the hot water temperature is 80-110 ℃.

Preferably, the degumming treatment of the cocoon filaments in the step 1 specifically comprises the following steps:

s101, soaking the cocoon shell silk in hot water, wherein sericin is dissolved in the hot water, and fibroin is insoluble;

s102, removing fibroin by methods such as filtration or centrifugation to obtain a sericin aqueous solution.

Preferably, the concentration of the sericin aqueous solution is 0.1-60%, and no chemical substance is introduced into sericin, so that the sericin aqueous solution is safe and environment-friendly.

Preferably, the sericin is sericin obtained after cocoon fiber hot-water degumming, maintains the natural properties of sericin, and is fully utilized without adding any chemical substances.

Preferably, the spraying method in the step 4 may be spraying by an additional spraying device, or spraying the sericin solution as a spunlace liquid directly on the surface of the silk non-woven fabric in a spunlace link, so that the sericin is uniformly spread on the surface of the silk non-woven fabric and even permeates into gaps of the silk non-woven fabric.

Preferably, in the padding method in step 4, the sericin solution is impregnated on the silk non-woven fabric in a padding-padding manner, so that the sericin is uniformly spread on the surface of the silk non-woven fabric and even permeates into the silk non-woven fabric.

Preferably, the drying temperature in the step 5 is 40-65 ℃.

Preferably, after the low-temperature drying in the step 5, the dried sericin is uniformly attached to the silk non-woven fabric in a dry state, so that the natural activity of the sericin is maintained, and the binding property of the sericin and the silk non-woven fabric is better.

Preferably, the sericin protein reinforced silk non-woven fabric prepared by the process steps can be widely used for preparing various sanitary product materials such as facial masks, face washing towels, wound dressings and operation pastes.

Compared with the prior art, the preparation method of the sericin reinforced silk non-woven fabric has the following beneficial effects and advantages:

1. the invention provides a preparation method of sericin reinforced silk non-woven fabric, which is characterized in that silk non-woven fabric prepared from cocoon shell silks is subjected to sericin reinforced finishing, sericin is uniformly spread on the surface of the silk non-woven fabric and permeates into gaps of the silk non-woven fabric, so that the silk non-woven fabric and the silk non-woven fabric are better compounded and compatible, subsequent processing and shaping are completed, and the silk non-woven fabric with excellent quality, nature and safety is obtained.

2. The silk non-woven fabric is produced by using the cocoon filaments, so that the additional value of the cocoon filaments is improved, the degummed protein is fully utilized, and waste is changed into valuable. The characteristics of fine and fragile cocoon shell silk are endowed with the characteristics of soft hand feeling and skin affinity of the silk non-woven fabric.

3. The sericin used in the invention is sericin obtained after cocoon fiber hot water degumming, maintains the natural property of sericin, and is not added with any chemical substance, so that the degummed sericin is fully utilized.

4. The sericin finished on the silk non-woven fabric has high compatibility with the silk non-woven fabric, and the silk non-woven fabric finished with the sericin has better attaching property, compatibility and repairability with human skin due to the natural moisturizing and antioxidant characteristics of the sericin;

5. the sericin-finished silk non-woven fabric is dried at low temperature, sericin has natural activity, and the prepared sericin-reinforced silk non-woven fabric has excellent toughness and strength, is soft and skin-friendly, and can be widely applied to the field of sanitary product materials such as facial masks, face washing towels, wound dressings and operation pastes.

The foregoing description is only an overview of the technical solutions of the present application, so that the technical means of the present application can be more clearly understood and the present application can be implemented according to the content of the description, and in order to make the above and other objects, features and advantages of the present application more clearly understood, the following detailed description is made with reference to the preferred embodiments of the present application and the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a process flow diagram of a preparation method of a sericin reinforced silk non-woven fabric according to the invention;

FIG. 2 is a flow chart showing the process for preparing a non-woven silk fabric for face according to the preferred embodiment, wherein the process parameters are specified for the process steps of the preparation method of the present invention;

FIG. 3 is a process flow chart of the preferred embodiment for directly reinforcing the silk non-woven fabric in the spunlace step of the process steps in the preparation method of the invention;

FIG. 4 is a flow chart of the process steps in the preparation method of the present invention adjusted to make a usable adhesive bandage in the preferred embodiment.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. In the following description, specific details such as specific configurations and components are provided only to help the embodiments of the present application be fully understood. Accordingly, it will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present application. In addition, descriptions of well-known functions and constructions are omitted in the embodiments for clarity and conciseness.

It should be appreciated that reference throughout this specification to "one embodiment" or "the embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrase "one embodiment" or "the present embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

Further, the present application may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.

The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, B exists alone, and A and B exist at the same time, and the term "/and" is used herein to describe another association object relationship, which means that two relationships may exist, for example, A/and B, may mean: a alone, and both a and B alone, and further, the character "/" in this document generally means that the former and latter associated objects are in an "or" relationship.

The term "at least one" herein is merely an association relationship describing an associated object, and means that there may be three relationships, for example, at least one of a and B, may mean: a exists alone, A and B exist simultaneously, and B exists alone.

It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion.

Example 1

This embodiment describes the process steps of the preparation method of the sericin reinforced silk non-woven fabric. Reference is made to figure 1.

The preparation method of the sericin reinforced silk non-woven fabric comprises the following preparation process steps:

step 1, degumming cocoon silk;

because the cocoon shell is a layer of loose and disordered silk thread on the periphery of the silkworm cocoon, the cocoon shell is fine and fragile, the sericin content is high, but silk reeling cannot be performed, the cocoon shell silk is firstly subjected to impurity removal and then is subjected to degumming treatment;

step 2, placing the degummed silk into a lapping machine to be processed into a fiber net;

step 3, drying and shaping the prepared silk non-woven fabric at low temperature;

step 4, carrying out reinforced finishing on the silk non-woven fabric by a spraying method or a padding method;

and 5, drying the silk non-woven fabric after sericin finishing at a low temperature.

Furthermore, before the step 2, the degummed silk is carded into a single fiber state by a carding machine, so that the subsequent processing is more convenient;

further, before step 3, the processed silk fiber net is sprayed by high-pressure micro water flow to entangle the fibers with each other and then drafted. The silk fiber net is more convenient to tangle by spraying high-pressure micro water flow to the fiber net, so that the strength of the fiber is enhanced

Processing the cocoon shell silk by the process of the step 1-3 to obtain degummed silk non-woven fabric;

and 4, performing reinforced finishing on the sericin for the silk non-woven fabric in the step 4, wherein a spraying method or a padding method can be specifically adopted. In the process, sericin is uniformly spread on the surface of the silk non-woven fabric and even permeates into gaps of the silk non-woven fabric or the silk non-woven fabric, so that the sericin is better compatible with the silk non-woven fabric.

The sericin reinforced silk non-woven fabric is finally prepared through the processing steps, and can be widely applied to the field of various sanitary product materials such as facial masks, face washing towels, wound dressings and operation pastes.

Example 2

In this embodiment, the process steps of the preparation method of the sericin reinforced silk non-woven fabric described in the above embodiments are further described, and repeated steps are not repeated.

In this example, according to the process steps of the preparation method of the sericin reinforced silk non-woven fabric described in example 1, the thickness of the silk non-woven fabric prepared by the process steps 1 to 3 is 0.15 to 0.30 mm.

Further, the degumming treatment in the step 1 adopts a hot water method, and the temperature of the hot water is 80-110 ℃.

The step 1 of degumming cocoon silk specifically comprises the following steps:

s101, soaking the cocoon shell silk in hot water, wherein sericin is dissolved in the hot water, and fibroin is insoluble;

s102, removing fibroin by methods such as filtration or centrifugation to obtain a sericin aqueous solution.

The concentration of the sericin aqueous solution is 0.1-60%, and no chemical substance is introduced into the sericin, so that the sericin aqueous solution is safe and environment-friendly.

It is worth noting that: the sericin is sericin obtained after cocoon silk hot-water degumming, maintains the natural property of sericin, and is not added with any chemical substance, so that the degummed sericin is fully utilized.

Wherein in a preferred embodiment, the temperature of the low-temperature drying and shaping in the step 3 is 80-105 ℃.

Further, the spraying method in the step 4 can be spraying by an additional spraying device, or directly spraying the sericin solution on the surface of the silk non-woven fabric in a spunlace link as a spunlace liquid, so that the sericin is uniformly spread on the surface of the silk non-woven fabric and even permeates into gaps of the silk non-woven fabric.

Further, in the padding method in the step 4, the sericin solution is soaked on the silk non-woven fabric in a one-padding-one-rolling mode, so that the sericin is uniformly spread on the surface of the silk non-woven fabric and even permeates into the silk non-woven fabric.

The low-temperature drying temperature in the step 5 is 40-65 ℃.

According to the process steps in the embodiment, the silk non-woven fabric made of the cocoon shell silk is subjected to sericin strengthening and finishing, and sericin is uniformly spread on the surface of the silk non-woven fabric and permeates into gaps of the silk non-woven fabric, so that the silk non-woven fabric and the silk non-woven fabric are better compounded and compatible, and the sericin strengthened silk non-woven fabric with excellent quality, nature and safety is obtained; and sericin is an acquisition substance with natural properties, and is safe and environment-friendly.

The strength and toughness of the silk nonwoven fabric prepared in this example were measured according to the following table 1:

test index	Test results (average value)
		Mass per unit area g/m2	31.25
Thickness/mm	0.25-0.29
		Breaking strength/N	51.42

Through testing, the prepared silk non-woven fabric has soft hand feeling, light and thin thickness and excellent toughness and strength.

Example 3

On the basis of the embodiments 1 and 2, this embodiment specifically describes the process steps of a preparation method of a sericin reinforced silk non-woven fabric.

The sericin reinforced silk non-woven fabric prepared by the preparation method is tested on facial skin. Because the sericin has the characteristics of natural moisture retention and oxidation resistance, the silk non-woven fabric finished by the sericin has better fitting property, compatibility and repairability with human skin.

Referring to fig. 2, in step 1 of this embodiment, degumming is performed after removing impurities in the cocoon shell, specifically: s101, placing the cocoon shell silk in hot water of 100 ℃ for boiling for 2 hours, and degumming to dissolve sericin in the hot water and insolubilize silk;

s102, removing fibroin by adopting a filtering method to obtain a sericin aqueous solution, wherein the concentration of the sericin aqueous solution is 36%.

In this embodiment, the processing steps before the process step 2 are explained as follows: carding degummed silk before step 2, specifically: carding, lapping and spunlacing the degummed cocoon filaments into non-woven fabrics; then processing the degummed silk into a fiber net by a lapping machine in step 2; then spraying high-pressure micro water flow onto the fiber net to enable the fibers to be mutually entangled, so that the toughness and the strength of the degummed silk fiber are enhanced; then drafting, drying and shaping at the low temperature of 95 ℃ in the step 3 to obtain the silk non-woven fabric with the thickness of 0.25 mm.

In this embodiment, strengthen the processing to silk non-woven fabrics with sericin in the process to step 4 and adopted the spraying method, spray through additional sprinkler, specific: and (3) spraying the prepared sericin solution with the concentration of 36% on the silk non-woven fabric by adopting an external spraying device, so that the sericin is uniformly spread on the surface of the silk non-woven fabric and even permeates into gaps of the silk non-woven fabric.

This embodiment step 5 is dried the silk non-woven fabrics after the sericin arrangement, and is specific: and drying the sericin finished silk non-woven fabric at a low temperature, wherein the drying temperature is selected to be 50 ℃, and thus obtaining the sericin reinforced silk non-woven fabric. After drying, the sericin is uniformly attached to the silk non-woven fabric in a dry state, the natural activity of the sericin is kept, and the combination of the sericin and the silk non-woven fabric is better.

In the embodiment, the sericin reinforced silk non-woven fabric is made into the beauty towel, and the beauty towel has solubility in water at different temperatures.

Table 2 shows the weight change of the aqueous solution after soaking the beauty towel in water at different temperatures for 30 min:

test conditions	Weight gain/g of aqueous solution
		Soaking in water at 25 deg.C for 30min	0.0026
Soaking in water at 40 deg.C for 30min	0.0033

Tests show that the reinforced silk non-woven fabric soaked at different water temperatures is still light, thin and soft, and has small weight gain.

In the embodiment, the prepared silk non-woven fabric is subjected to skin use test, the sericin reinforced silk non-woven fabric is soaked in 40 ℃ little hot water, the sericin on the silk non-woven fabric is expanded and dissolved in the hot water, and is taken out after being soaked for 5min and then applied to the face, the soaked silk non-woven fabric is light, thin and soft, the fit degree of the soaked silk non-woven fabric and the face is extremely high, the silk non-woven fabric is gently massaged, the dissolved sericin acts on the face, and the natural sericin is absorbed by the face; taking down after 20min, testing skin state, testing skin to become smooth, tender, and elastic, and the silk non-woven fabric applied on face is intact, and can be used as face washing towel for repeated use.

Example 4

On the basis of the foregoing embodiment, in the preparation method of the sericin reinforced silk nonwoven fabric in the embodiment, after the step 2, the sericin solution is directly sprayed on the surface of the silk nonwoven fabric as a spunlace liquid in a spunlace link, and the specific preparation method comprises the following steps:

referring to fig. 3, in step 1 of this embodiment, degumming is performed on the impurity-removed cocoon shell, specifically:

s101, soaking the cocoon shell silk in hot water at 80 ℃ for 3 hours, and degumming to dissolve sericin in the hot water;

s102, removing fibroin by adopting a filtering method to obtain a sericin aqueous solution, wherein the concentration of the sericin aqueous solution is 18%.

In this embodiment, degummed silk is combed, specifically: and (3) carding the degummed cocoon filaments, lapping and spunlacing the cocoon filaments into non-woven fabrics. Then processing the silk into a fiber net by a lapping machine in the step 2, spraying the fiber net by high-pressure micro water flow, and on one hand, mutually entangling the fibers and increasing the cohesive force among the silk fibers; on the other hand, in the link, the sericin solution is directly sprayed on the surface of the silk non-woven fabric, so that the sericin is uniformly spread on the surface of the silk non-woven fabric and even permeates into gaps of the silk non-woven fabric; and finally, drafting, and drying and shaping at the low temperature of 60 ℃ in the step 3 to obtain the sericin reinforced silk non-woven fabric with the thickness of 0.29 mm. After drying, the sericin is uniformly attached to the silk non-woven fabric in a dry state, the natural activity of the sericin is kept, and the combination of the sericin and the silk non-woven fabric is better.

In the embodiment, skin use tests are carried out on the combination of the prepared silk non-woven fabric and the skin lotion, the sericin reinforced silk non-woven fabric is soaked in a small amount of skin lotion at room temperature, the sericin on the silk non-woven fabric is dissolved in the skin lotion and is taken out after being soaked for 10min and then applied to the face, the soaked silk non-woven fabric is light, thin and soft, the attaching degree of the soaked silk non-woven fabric to the face is extremely high, and the silk non-woven fabric is gently massaged to enable the dissolved sericin and the skin lotion to act on the face; the product is taken down after 20min, and tested for skin state, and the test experiencer can obviously feel cool, white, smooth and elastic skin, and the silk non-woven fabric applied on face can be used as face washing towel for repeated use.

Example 5

On the basis of embodiment 1, this embodiment provides supplementary descriptions for the process steps of the preparation method of the sericin-reinforced silk non-woven fabric, and the prepared sericin-reinforced silk non-woven fabric is made into a band-aid.

Referring to the attached figure 4, in the step 1 of the embodiment, impurities in the cocoon shell are removed, and then degumming treatment is performed, specifically: s101, placing the cocoon shell silk in hot water of 105 ℃ for boiling for 2 hours, and degumming to dissolve sericin in the hot water;

s102, removing fibroin by adopting a filtering method to obtain a sericin aqueous solution, wherein the concentration of the sericin aqueous solution is 40%.

Repeatedly carding the degummed silk, and processing the degummed silk into a fiber net through a lapping machine in the step 2; jetting high-pressure micro water flow onto a fiber net to enable fibers to be mutually entangled, so that the toughness and strength of degummed silk fibers are enhanced; and (3) drafting, and drying and shaping at 105 ℃ in the step 3 to obtain the silk non-woven fabric with the thickness of 0.15 mm.

The silk non-woven fabric is strengthened by the sericin in the step 4 in the embodiment by adopting a padding method, and the prepared sericin solution with the concentration of 40% is impregnated on the silk non-woven fabric in a one-padding-one-rolling mode, so that the sericin is uniformly spread on the surface of the silk non-woven fabric and even permeates into the silk non-woven fabric.

This embodiment step 5 is dried the silk non-woven fabrics after the sericin arrangement, and is specific: and drying the silk non-woven fabric finished with the sericin at a low temperature of 58 ℃ to obtain the sericin reinforced silk non-woven fabric. After drying, the sericin is uniformly attached to the silk non-woven fabric in a dry state, the natural activity of the sericin is kept, and the combination of the sericin and the silk non-woven fabric is better.

This embodiment will make silk non-woven fabrics and make woundplast and tested, cut this sericin strenghthened type silk non-woven fabrics into the band-aid strip, twine and observe in wound, and this woundplast intensity and toughness are all excellent, observe finding after the test finishes: the woundplast has no itching or other discomfort symptoms to the skin except that a small amount of blood stain is stained on the wound.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Therefore, it is within the scope of the present invention to cover all equivalent modifications or changes that can be made by those skilled in the art without departing from the spirit and technical idea of the present invention.