CN118390298B

CN118390298B - A non-woven fabric and its preparation method and application

Info

Publication number: CN118390298B
Application number: CN202410624774.5A
Authority: CN
Inventors: 张洪
Original assignee: C & S Paper Co ltd
Current assignee: C & S Paper Co ltd
Priority date: 2024-05-20
Filing date: 2024-05-20
Publication date: 2025-04-15
Anticipated expiration: 2044-05-20
Also published as: CN118390298A

Abstract

The present application relates to the field of nonwoven fabrics, and more specifically to a nonwoven fabric and a preparation method and application thereof. The present invention provides a composition comprising the following components: an imidazoline compound, polyethylene glycol, a quaternary ammonium salt, a polyether compound and grease. The composition is a fiber finishing agent for preparing a nonwoven fabric. The obtained nonwoven fabric looks like a silk texture and feels silky and soft to the touch.

Description

Non-woven fabric and preparation method and application thereof

Technical Field

The application relates to the field of non-woven fabrics, in particular to a non-woven fabric, and a preparation method and application thereof.

Background

The current soft tissues on the market comprise soft tissues manufactured by cotton fibers (cotton soft tissues), soft tissues manufactured by viscose fibers (also called viscose fibers, wood pulp is prepared by extracting hemicellulose, belongs to plant fibers, can be degraded by 100 percent and is environment-friendly, and is commonly known as artificial cotton), soft tissues manufactured by viscose fibers and polyester fibers (petroleum-based) which are mixed in any proportion, or soft tissues formed by polyester fibers.

In 2021, gold Baili has proposed a soft towel containing mulberry silk fibers, which is mainly used as a face towel product. Wherein the polyester fiber reaches 30 percent, the viscose fiber reaches 69 percent or so, and the mulberry silk fiber content is lower than 0.8 percent.

These products are used for cleansing, baby wiping, or disposable facial tissues, which are hard, and rough. If the polyester fiber is contained, the non-degradable environment pollution is caused. All-viscose non-woven fabrics also have a very strong "sulphur smell" if soaked in hot water.

With the improvement of the living standard of mass consumers, the requirements on the product quality are higher, the environmental awareness is improved, the environment is friendly, and the skilled person expects to develop better soft towel products which have the effects of super softness, bulk, smell-free, difficult fluffing, easy biodegradation and the like.

Disclosure of Invention

In some embodiments, the invention provides a composition comprising an imidazoline compound, a polyethylene glycol, a quaternary ammonium salt, a polyether compound, and an oil.

In some embodiments, the composition comprises, by weight, 0.05-5 parts of an imidazoline compound, 0.01-2 parts of polyethylene glycol, 0.05-2 parts of a quaternary ammonium salt, 0.05-5 parts of a polyether compound and 0.05-5 parts of grease.

In some embodiments, the composition comprises, by weight, 0.1-5 parts of an imidazoline compound, 0.05-1 part of polyethylene glycol, 0.05-1 part of a quaternary ammonium salt, 0.05-2 parts of a polyether compound and 0.05-2 parts of grease.

In some embodiments, the composition comprises, by weight, 0.1-2 parts of an imidazoline compound, 0.05-0.6 part of polyethylene glycol, 0.05-0.5 part of a quaternary ammonium salt, 0.05-1.5 parts of a polyether compound and 0.05-1 part of grease.

In some embodiments, the composition comprises, by weight, 0.5-2 parts of an imidazoline compound, 0.1-0.5 part of polyethylene glycol, 0.05-0.5 part of a quaternary ammonium salt, 0.2-1.5 parts of a polyether compound and 0.2-1 part of grease.

In some embodiments, the imidazoline compound is selected from alkyl imidazolines.

In some embodiments, the imidazoline compound is selected from alkyl bisimidazoline cationic surfactants.

In some embodiments, the imidazoline compound is selected from the group consisting of 2- (C17 and C17-unsaturated alkyl) -1- [2- (C18 and C18-unsaturated amino) ethyl ] -4, 5-dihydroxy-1-methylsulfate (NAM; C).

In some embodiments, the polyethylene glycol is selected from polyethylene glycols having a molecular weight of 10 to 3000.

In some embodiments, the polyethylene glycol is selected from polyethylene glycols having a molecular weight of 10-1500.

In some embodiments, the polyethylene glycol is selected from polyethylene glycols having a molecular weight of 100-1500.

In some embodiments, the polyethylene glycol is selected from polyethylene glycols having a molecular weight of 1000-1500.

In some embodiments, the polyethylene glycol is selected from the group consisting of polyethylene glycols having a molecular weight of 1000 and polyethylene glycols having a molecular weight of 1500.

In some embodiments, the weight ratio of polyethylene glycol 1000 to polyethylene glycol 1500 in the polyethylene glycol is 1:0.5-5.

In some embodiments, the weight ratio of polyethylene glycol 1000 to polyethylene glycol 1500 in the polyethylene glycol is 1:0.5-2.

In some embodiments, the composition comprises, by weight, 0.1-2 parts of an imidazoline compound, 1000.02-0.5 parts of polyethylene glycol, 1500.06-0.5 parts of polyethylene glycol, 0.05-0.5 parts of a quaternary ammonium salt, 0.05-1.5 parts of a polyether compound and 0.05-1 part of grease.

In some embodiments, the composition comprises, by weight, 0.5-2 parts of an imidazoline compound, 1000.03-0.5 parts of polyethylene glycol, 1500.03-0.5 parts of polyethylene glycol, 0.05-0.5 parts of a quaternary ammonium salt, 0.2-1.5 parts of a polyether compound and 0.2-1 part of grease.

In some embodiments, the quaternary ammonium salt is selected from single-double stranded complex quaternary ammonium salts.

In some embodiments, the quaternary ammonium salt is selected from N- (2-hydroxyethyl) dodecylamide.

In some embodiments, the polyether compound is selected from amino polyether silicone oils.

In some embodiments, the grease is selected from at least 1 of the group consisting of cetyl 2-ethylhexanoate, 2-ethylhexyl palmitate, isopropyl myristate, isopropyl stearate, isobutyl stearate, 2-ethylhexyl stearate, isopropyl isostearate, butyl isostearate, decyl isostearate, lauryl isostearate, isodecyl isodecanoate, isodecyl isononanoate, isotridecyl isononanoate, neopentyl glycol dicaprylate, glyceryl tri-2-ethylhexanoate, propylene glycol dicaprate, caprylic/capric triglyceride, trimethylolpropane triisostearate, pentaerythritol tetra-2-ethylhexanoate, and dipentaerythritol fatty acid ester.

In some embodiments, the lipid is selected from caprylic/capric triglyceride.

In some embodiments, the composition is a fiber treatment.

In some embodiments, the composition is a nonwoven fabric fiber treatment.

In some embodiments, the present invention provides a fiber treatment solution comprising any of the compositions described herein.

In some embodiments, the fiber treatment solution further comprises water.

In some embodiments, the fiber treatment solution contains a volume of water that is 100 times the composition.

In some embodiments, the present invention provides a nonwoven fabric, the fibers of which are attached by the composition.

In some embodiments, the composition is used in an amount of 1-10 kg/ton of nonwoven fabric.

In some embodiments, the composition is used in an amount of 1 to 6kg per ton of nonwoven fabric.

In some embodiments, the composition is used in an amount of 1-4 kg per ton of nonwoven fabric.

In some embodiments, the composition is used in an amount of 3 kg/ton of nonwoven.

In some embodiments, the nonwoven fabric is a nonwoven fabric having a triple helix structure.

In some embodiments, the nonwoven fabric further comprises silk fibers and viscose fibers.

In some embodiments, the nonwoven fabric further comprises silk fibers, first viscose fibers, second viscose fibers, and third viscose fibers.

In some embodiments, the preparation raw materials of the non-woven fabric further comprise, by weight, 0.5-10 parts of mulberry silk fibers, 10-20 parts of first viscose fibers, 20-40 parts of second viscose fibers and 50-70 parts of third viscose fibers.

In some embodiments, the preparation raw materials of the non-woven fabric further comprise, by weight, 0.5-8 parts of mulberry silk fibers, 10-15 parts of first viscose fibers, 20-35 parts of second viscose fibers and 50-60 parts of third viscose fibers.

In some embodiments, the preparation raw materials of the non-woven fabric further comprise, by weight, 0.5-7 parts of mulberry silk fibers, 10-13 parts of first viscose fibers, 20-30 parts of second viscose fibers and 50-55 parts of third viscose fibers.

In some embodiments, the mulberry silk fiber fineness is 1.3-3.3dtex and the length is 36-82mm.

In some embodiments, the first viscose fiber is a delicate fiber with fineness of 0.5-1.11dtex and length of 38-57 mm.

In some embodiments, the second viscose is a flexible fiber having a fineness of 1.12-1.68dtex and a length of 38-57 mm.

In some embodiments, the third viscose is a freshness fiber having a fineness of 1.69-2.0dtex and a length of 38-57 mm.

In some embodiments, the silk fiber is obtained by (1) obtaining cocoons with the weight of 1.8-2.0g of fresh cocoons per cocooning frame by a cocooning frame tool, the weight of 0.40-0.44g of fresh shells and the weight of 0.36-0.38g of dry shells, the whole length of cocoons is 1300-1500m, the weight of cocoons is 0.40-0.44g, drying cocoons, (2) soaking cocoons and reeling silk, and (4) cutting cocoons to obtain the mulberry silk fiber.

In some embodiments, the silk cocoons are spring silk cocoons.

In some embodiments, in step (1), the cocoon filaments have a filament diameter of 13 to 18 microns and an average denier of 2.8 to 3.3.

In some embodiments, in step (1), the length of the cocoon filaments is a common multiple of 36-82 mm.

In some embodiments, in step (3), a biological enzyme is added to bubble cocoons at 40-60 ℃.

In some embodiments, the biological enzyme is papain.

In some embodiments, the cut cocoon filaments have a length of 36-82mm.

In some embodiments, the sericin content in the mulberry silk fiber is 6-9wt%, the fiber length is 36-82mm, and the fiber fineness is 1.3-3.3dtex. The mulberry silk is composed of two triangular or semi-elliptical silk fibroin-coated sericin, and the cross section of the mulberry silk is elliptical. The mulberry silk fiber is protein fiber, sericin and silk fibroin are main components, the diameter of a monofilament of the mulberry silk is about 13-18 microns, which is equivalent to 1/20 of that of hair silk, the fineness unit is denier, the weight of 9000 m long silk is 1 gram, the larger the number is, the thicker the silk is, the average fineness of the mulberry silk is generally 2.8-3.3D, and the total length of the 1 mulberry silk cocoon after all the silk is unfolded can reach 1000-1500 m.

In some embodiments, the nonwoven fabric has a triple helix structure.

In some embodiments, the nonwoven fabric is a soft towel.

In some embodiments, the invention provides the use of any of the compositions described in the preparation of a nonwoven fabric.

In some embodiments, the present invention provides a method of making a nonwoven fabric comprising the steps of:

(1) Respectively opening silk fibers and viscose fibers for the first time;

(2) Mixing silk fibers and viscose fibers to obtain mixed fibers;

(3) Opening the mixed fiber in the step (2) for the second time;

(4) Carding, cross lapping, traction and hydro-entangling to obtain wet cloth;

(5) Removing free water of the wet cloth;

(6) Contacting the wet cloth from which the free water is removed with the fiber treating agent;

(7) And (5) drying to obtain the non-woven fabric.

In some embodiments, in step (1), the silk fiber and the viscose fiber are first opened to form an opened section, and then the mulberry silk fiber is uniformly placed in the pre-opened section.

In some embodiments, in step (4), the second opened cotton layer is passed through a hopper and then transferred to a pneumatic hopper, which feeds the cotton layer into the carding machine.

In some embodiments, the carding machine employs an S-feed mode to card the cotton bundles into individual fibers.

In some embodiments, in step (7), the drying temperature is 100-150 ℃.

In some embodiments, the drying temperature is 105-140 ℃.

In some embodiments, the drying temperature is 110-135 ℃.

In some embodiments, in the step (6), the amount of the fiber treatment agent is 1-10 kg/ton of the nonwoven fabric.

In some embodiments, in the step (6), the amount of the fiber treatment agent is 1 to 6 kg/ton of nonwoven fabric.

In some embodiments, in the step (6), the amount of the fiber treatment agent is 1 to 4 kg/ton of the nonwoven fabric.

In some embodiments, in step (6), the fiber treating agent is used in an amount of 3 kg/ton of nonwoven fabric.

Drawings

Fig. 1A and 1B are microscopic images of a general single viscose fiber and a nonwoven fabric obtained after hydroentanglement according to the present invention, respectively.

FIG. 2 is a magnified photograph of a final product nonwoven fabric prepared according to an embodiment of the present application.

Fig. 3A and 3B are cross-sectional microscopic images of the nonwoven fabric according to the embodiment of the present application before and after the treatment with the fiber finishing agent, respectively, and fig. 3C is a microscopic image of the fibers in the nonwoven fabric according to the embodiment of the present application after the treatment with the fiber finishing agent.

FIG. 4 shows a schematic diagram of an S-feed mode.

Detailed Description

In order to further describe the technical means and effects adopted by the present application for achieving the preset purpose, the following detailed description is given of the specific implementation, structure, characteristics and effects according to the present application with reference to the accompanying drawings and preferred embodiments.

In the event that any definition set forth below conflicts with any document incorporated herein by reference, the set forth definition will control.

The terms "comprising," "having," "containing," and "including," and their grammatical equivalents, as used herein, are equivalent and open ended terms that include any one or more of the following items, neither meant to be an exhaustive list of the item or items, nor meant to be limited to only the item or items listed. For example, an article that "includes" components A, B, and C may consist of components A, B, and C (i.e., contain only components A, B, and C), or may contain not only components A, B, and C, but may include one or more other components. It is therefore intended and understood that the disclosure of an embodiment "consisting essentially of" or "consisting of" and grammatical equivalents thereof is included.

As used herein, including in the appended claims, the singular forms "a", "an", and "the" include plural referents unless the context clearly dictates otherwise.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. Although many methods and reagents are similar or equivalent to those described herein, exemplary methods and materials are disclosed herein.

It is to be understood that this disclosure is not limited to the particular methods, protocols, reagents, etc. described herein, and that it may vary in itself. The terminology used herein is for the purpose of describing particular embodiments or aspects only and is not intended to limit the scope of the present disclosure.

In this example, 1.11dtex 40mm "fiber was derived from the Sadeli company, hereinafter referred to as the first viscose fiber.

1.33Dtex 40mm "fiber was derived from the Sadeli company, hereinafter referred to as second viscose fiber.

1.70Dtex 40mm "fresh fibres" were derived from the company celdily, hereinafter referred to as third viscose fibres.

EXAMPLE 1 obtaining of mulberry silk fiber

1.1 Selection of cocoons and Silk Length

The spring silkworm cocoons with the weight of 1.8-2.0g of each fresh cocoon, 0.40-0.44g of fresh shell, 0.36-0.38g of dry shell and 0.40-0.44g of cocoon silk weight are obtained through the square cocooning frame, and the whole length of the cocoon silk is 1300-1500 m. The cocoon filaments have a filament diameter of about 13-18 microns and an average fineness of about 2.8-3.3D (denier). The whole cocoon silk length is 36-82mm common multiple.

1.2 Drying silkworm cocoons

And (5) drying the cocoons at the medium temperature of 60-70 ℃ to constant weight.

The medium temperature drying of the silkworm cocoons can not only achieve the technical effects of preventing the fresh cocoons from coming out of the moth or from coming out of the maggots, damaging the cocoon quality, removing water and facilitating long-term storage and the like, but also enable the easily soluble sericin of the fresh cocoons to be properly denatured compared with the commonly used high-temperature drying at 90-100 ℃ so as to be beneficial to smooth reelability in the silk reeling process, and preserve the sericin with high quality.

1.3 Soaking cocoons and reeling silk

Soaking cocoons with 40-60deg.C warm water containing 100-130ppm papain. When the thread is easy to be unwound, the thread is moved into cold water for spinning.

Compared with the prior art of adding soda ash for boiling cocoons at 100 ℃, the method can retain sericin, protect silk quality and keep the thickness of fibers uniform to the greatest extent.

The cocoon silk obtained by the steps is bright and glossy, tough and colored.

1.4 Cutting off cocoon silk to obtain mulberry silk fiber capable of being laid

Cutting cocoon silk to a cutting length of 36-82mm.

The cutting length is suitable for matching with a water needling process, is mixed with viscose fiber, and is convenient for opening and carding.

The cocoon of 1.1 is cut into a cut silk length, which can reduce the generation of fine fibers and prevent the generation of flock after hydroentanglement.

The characteristic indexes of the mulberry silk (raw silk) fiber are as follows:

sericin content of 6-9% (weight ratio of raw silk fiber)

The length of the fiber is 36-82mm

The fineness of the fiber is 1.3-3.3dtex

Fiber color: off white/white

The moisture regain is 9-10%

The moisture absorption amount is 100% relative humidity, the moisture absorption rate is 30-35%, and the moisture dissipation is quick.

Example 2 hydroentanglement nonwoven fabrics with triple helix structure

The preparation of the non-woven fabric in the embodiment comprises the following raw materials in proportion:

the mulberry silk fiber is 2.3dtex in fineness and 62mm in length, and the weight ratio is 2wt%;

The first viscose fiber is a soft fiber with fineness of 1.11dtex and length of 40mm, and the weight ratio of the first viscose fiber to the soft fiber is 13 percent;

The second viscose fiber is a soft fiber with fineness of 1.33dtex and length of 40mm, and the weight ratio of the second viscose fiber is 30wt%;

the third viscose fiber is fresh fiber with fineness of 1.70dtex and length of 40mm, and the weight ratio of the third viscose fiber is 55wt%;

In this example, the mulberry silk fiber is the mulberry silk fiber obtained in example 1.

2.1 Pre-opening

And combining the first viscose fiber, the second viscose fiber and the third viscose fiber according to the weight ratio, weighing the required weight, and respectively pre-opening.

After pre-opening, 5kg of a pre-opening section was formed, and then accurately weighed mulberry silk fibers (according to the formulation of this example) were uniformly placed into the pre-opening section.

2.2 Stirring and super mixing

Stirring uniformly and super-mixing, and stirring and super-mixing the three viscose fibers and the mulberry silk fibers according to the formula proportion.

2.3 Precision opening

And (3) finely opening the three viscose fibers and the mulberry silk fibers which are stirred and super-mixed according to the formula proportion.

2.4 Carding

The opened cotton layer (i.e., the finely opened mixed fibers) passes through a cotton storage tank and is then transferred to a pneumatic cotton tank. The air pressure hopper will feed the appropriate amount of cotton layer into the carding machine.

The cotton layer is sent to a chest cylinder through a cotton feeding roller for pre-carding, and then sent to a main cylinder through a transfer roller for carding cotton bundles into single fibers. And the cotton layer enters a first working roller of the main cylinder to be carded, stripped, and is respectively stripped and output to two conveying net curtains to be layered one by one for lapping. In order to solve the cotton clamping problem, an S-shaped feeding mode is selected, and a schematic diagram is shown in fig. 4.

The mulberry silk fiber is fed through the S type, and is well combed under the action of the licker-in and the AVT chest cylinder, and especially under the action of mechanical force, the sericin of the mulberry silk can be uniformly distributed on the viscose fiber, and the sericin is uniformly distributed in the middle of the viscose fiber, so that the fiber finishing agent can play a role better.

2.5 Cross lapping and traction to form a fiber left-handed spiral structure nonwoven fabric

After carding, the cotton layer is combined with a drawing machine through a cross lapping machine to output a net curtain with the width of 15 meters for cross lapping and drawing, and the non-woven fabric with the fiber in a left-handed spiral structure is obtained.

2.6 Hydroentanglement

And (3) carrying out hydro-entangled on the non-woven fabric with the fiber left-hand spiral structure by using a hydro-entangled head to obtain the wet non-woven fabric. The hydro-entangled heads can utilize water energy to the maximum extent in the whole working pressure range, generate high-power continuous consistent hydro-acupuncture, and ensure consistent thickness and uniformity of the finished cloth cover.

The microscope image of the nonwoven fabric obtained after hydroentanglement according to the embodiment of the present application is shown in fig. 1B. The microscope image of the non-woven fabric obtained by hydroentangling common single viscose fiber is shown in figure 1A. As can be seen from the results shown in fig. 1A and 1B, the fiber structure state of the common single viscose fiber after hydroentangled shows irregular winding, while the nonwoven fabric of the embodiment of the application forms a triple spiral winding structure after hydroentangled.

2.7 Addition of fiber-treating agent

The wet non-woven fabric after hydroentanglement is subjected to vacuum suction dehydration, free moisture of the wet non-woven fabric is removed, diluted fiber treating agent solution is sprayed on the wet non-woven fabric without free water in a spraying mode, and the spraying pressure is 4-6kpa.

The mulberry silk fiber, the fresh viscose fiber and the superfine viscose fiber form stable wet non-woven fabrics, and the mulberry silk fiber and the viscose fiber are perfectly combined by using the special fiber treating agent, so that the mulberry silk protein and the viscose are attached to the viscose fiber, and the viscose fiber has a silk softening effect.

The fiber treating agent solution is formed by diluting the fiber treating agent composition with water, namely 1 part of fiber finishing agent to 130 parts of water.

2.8 Determination of amino acid content

According to the raw material formula for preparing the non-woven fabric of the embodiment, the free water is removed in a laboratory sheet, and the fiber finishing agent solution with the accurate metering of 0.01-5% is uniformly sprayed on the wet sheet. Then dried to 93-94%, and the results of randomly extracting cloth or sliced amino acid are shown in Table 1. It can be seen that all the sulphur containing amino acids have reacted and are not detectable.

TABLE 1

Amino acids	Content (mg/kg)	Amino acids	Content (mg/kg)	Amino acids	Content (mg/kg)
						Aspartic acid	112.03	Cysteine (S)	0.00	Phenylalanine (Phe)	135.51
Threonine (Thr)	214.68	Valine (valine)	177.15	Lysine	42.30
						Serine (serine)	971.93	Methionine	0.00	Histidine	27.74
Glutamic acid	204.97	Isoleucine (Ile)	25.83	Arginine (Arg)	27.92
						Glycine (Gly)	2,706.81	Leucine (leucine)	20.16	Proline (proline)	0.00
Alanine (Ala)	2,181.31	Tyrosine	395.40

Therefore, the fiber finishing agent has special hydrolysis effect on sericin and silk fibroin on mulberry silk, and the hydrolyzed sericin and silk fibroin also have polarity, so that the hydrolyzed sericin and silk fibroin are firmly adsorbed on viscose fibers. After drying, the adhesive is cured on each viscose. Imparting softness to each fiber.

In this step, the formulation of the fiber finish solution was the formulation of the embodiment 5-C in example 3.

2.9 Drying

The nonwoven fabric treated with the fiber treating agent was dried at a drying temperature of 110 ℃ to obtain a parent roll (hereinafter also referred to as nonwoven fabric or raw fabric).

Example 3 detection of nonwoven fabrics

1. Appearance detection of nonwoven fabric

The final nonwoven fabric obtained in step 2.9 of example 2 appeared to have a silky texture, and was soft to the touch with silky feel, and had an effect of a silk-like appearance. Called "soft non-woven fabric" or "super soft non-woven fabric". FIG. 2 is a magnified photograph of a final product nonwoven fabric prepared according to an embodiment of the present application.

2. Microscopic image comparison before and after addition of fiber treatment agent

Fig. 3A and 3B are cross-sectional microscopic images of the nonwoven fabric according to the embodiment of the present application before and after the treatment with the fiber finishing agent, respectively, and fig. 3C is a microscopic image of the fibers in the nonwoven fabric according to the embodiment of the present application after the treatment with the fiber finishing agent. As can be seen from fig. 3A and 3B, after the fiber treatment agent, sericin and silk fibroin are attached to the viscose fiber, and the longitudinal grooves on the viscose fiber are filled to be straight, so that diffuse reflection is greatly reduced, transparent texture is enhanced, and silk luster is generated, and meanwhile, the rigidity of the viscose fiber is reduced under the action of the fiber finishing agent, so that the viscose fiber has obvious silk feel to the touch. As can be seen from fig. 3C, after the viscose fiber is subjected to the fiber finishing agent, the sericin and the silk fibroin are attached to the viscose fiber, and the collagen-like fiber or the collagen bundle presents transparent texture.

3. Performance test comparison of nonwoven fabrics obtained with different fiber treatments

TABLE 2 preparation process and materials of nonwoven fabrics

TABLE 2 continuous process

Note that (1) the data in table 2 above are all mean ± SD except for whiteness, (2) the odor test method standard that odor should be smelled after being soaked at 55 ± 5 ℃ water temperature, (3) the martindale abrasion resistance test method standard that both upper and lower trays of the martindale tester are faced with the same test cloth, and at 9kPa pressure, 30 turns to above grade 3.5.

In Table 2, kg/ton of cloth means that 1kg of fiber finishing agent was added to 1 ton of nonwoven fabric (refer to the parent roll obtained in step 2.9 of example 2).

Wherein, in table 2:

(1) The imidazoline is specifically 2- (C17 and C17-unsaturated alkyl) -1- [2- (C18 and C18-unsaturated amino) ethyl ] -4, 5-dihydroxy-1-methylsulfate (NAM; C) (CAS number: 72749-55-4).

(2) The anion-blocking composite quaternary ammonium salt is specifically N- (2-hydroxyethyl) dodecylamide (CAS number: 142-78-9)

(3) The polyethylene polyether modifier is specifically amino polyether silicone oil (see Guo, et al, application of amino polyether silicone oil in shampoo, organosilicon material 2009);

(4) Caprylic/capric triglyceride (CAS number 65381-09-1).

3. Performance test of various nonwoven fabrics

3.1 Comparing with various nonwoven fabrics on the market

The results are shown in Table 3.

TABLE 3 Table 3

TABLE 3 continuous process

Group 4 in table 3 is the final product obtained by slitting the parent roll obtained in step 2.9 of example 2, using the same fiber finish as in scheme 5-C of table 2 of example 3. The data in Table 2 above are all mean.+ -. SD.

Test example 1

The drying temperature in example 2 was set at 150℃and the other steps were the same as in the case of the schemes 5 to C in Table 2, and the resultant nonwoven fabric had a comprehensive hand (Handfeel) HF value of about 90.

The above embodiments are only preferred embodiments of the present application, and the scope of the present application is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present application are intended to be within the scope of the present application as claimed.

Claims

1. A composition, characterized in that it comprises the following components: an imidazoline compound, polyethylene glycol, a quaternary ammonium salt, a polyether compound and a grease; the imidazoline compound is selected from 2-(C17 and C17-unsaturated alkyl)-1-[2-(C18 and C18-unsaturated amino)ethyl]-4,5-dihydroxy-1-methyl sulfate (NAM; C); the polyethylene glycol is selected from a combination of polyethylene glycol with a molecular weight of 1000 and a polyethylene glycol with a molecular weight of 1500; the quaternary ammonium salt is selected from N-(2-hydroxyethyl) dodecylamide; the polyether compound is selected from aminopolyether silicone oil; and the grease is selected from caprylic/capric triglyceride.

2. The composition according to claim 1, characterized in that it comprises the following components in parts by weight: 0.05 to 5 parts of an imidazoline compound, 0.01 to 2 parts of polyethylene glycol, 0.05 to 2 parts of a quaternary ammonium salt, 0.05 to 5 parts of a polyether compound and 0.05 to 5 parts of oil.

3. The composition as claimed in claim 1, characterized in that it comprises the following components in parts by weight: 0.1 to 5 parts of an imidazoline compound, 0.05 to 1 part of polyethylene glycol, 0.05 to 1 part of a quaternary ammonium salt, 0.05 to 2 parts of a polyether compound and 0.05 to 2 parts of fat.

4. The composition of claim 1, characterized in that it comprises the following components in parts by weight: 0.1 to 2 parts of an imidazoline compound, 0.05 to 0.6 parts of polyethylene glycol, 0.05 to 0.5 parts of a quaternary ammonium salt, 0.05 to 1.5 parts of a polyether compound and 0.05 to 1 part of oil.

5. The composition according to claim 1, characterized in that the composition comprises the following components in parts by weight: 0.5 to 2 parts of an imidazoline compound, 0.1 to 0.5 parts of polyethylene glycol, 0.05 to 0.5 parts of a quaternary ammonium salt, 0.2 to 1.5 parts of a polyether compound and 0.2 to 1 parts of fat.

6. The composition according to claim 1, characterized in that the weight ratio of polyethylene glycol 1000 to polyethylene glycol 1500 in the polyethylene glycol is 1:0.5-5.

7. The composition according to claim 1, characterized in that the weight ratio of polyethylene glycol 1000 to polyethylene glycol 1500 in the polyethylene glycol is 1:0.5-2.

8. The composition of claim 1, wherein the composition comprises the following components in parts by weight: 0.1 to 2 parts of an imidazoline compound, 0.02 to 0.5 parts of polyethylene glycol 1000, 0.06 to 0.5 parts of polyethylene glycol 1500, 0.05 to 0.5 parts of a quaternary ammonium salt, 0.05 to 1.5 parts of a polyether compound, and 0.05 to 1 part of fat.

9. The composition according to claim 1, characterized in that the composition comprises the following components in parts by weight: 0.5 to 2 parts of an imidazoline compound, 0.03 to 0.5 parts of polyethylene glycol 1000, 0.03 to 0.5 parts of polyethylene glycol 1500, 0.05 to 0.5 parts of a quaternary ammonium salt, 0.2 to 1.5 parts of a polyether compound and 0.2 to 1 parts of fat.

10. The composition according to any one of claims 1 to 9, characterized in that the composition is a fiber treating agent.

11. The composition according to any one of claims 1 to 9, characterized in that the composition is a non-woven fiber treatment agent.

12. A fiber treatment solution, characterized in that it comprises the composition according to any one of claims 1 to 11.

13. The fiber treating solution of claim 12, further comprising water.

14. The fiber treatment solution according to claim 12, wherein the fiber treatment solution contains water in an amount 100 times the volume of the composition.

15. A nonwoven fabric, characterized in that the fibers of the nonwoven fabric are fibers of the nonwoven fabric subjected to an adhesion treatment using the composition according to any one of claims 1 to 11.

16. The nonwoven fabric according to claim 15, characterized in that the amount of the composition is 1-10 kg/ton of nonwoven fabric.

17. The nonwoven fabric according to claim 15, characterized in that the amount of the composition is 1-6 kg/ton of nonwoven fabric.

18. The nonwoven fabric according to claim 15, characterized in that the amount of the composition is 1-4 kg/ton of nonwoven fabric.

19. The nonwoven fabric according to claim 15, characterized in that the amount of the composition is 3 kg/ton of nonwoven fabric.

20. The nonwoven fabric according to claim 15, characterized in that the raw materials for preparing the nonwoven fabric further include silk fiber and viscose fiber.

21. The nonwoven fabric according to claim 15, characterized in that the raw materials for preparing the nonwoven fabric further include silk fiber, a first viscose fiber, a second viscose fiber and a third viscose fiber.

22. The nonwoven fabric as claimed in claim 15, characterized in that the raw materials for preparing the nonwoven fabric also include the following components in parts by weight: 0.5 to 10 parts of mulberry silk fiber, 10-20 parts of a first viscose fiber, 20-40 parts of a second viscose fiber, and 50-70 parts of a third viscose fiber.

23. The nonwoven fabric as claimed in claim 15, characterized in that the raw materials for preparing the nonwoven fabric also include the following components in parts by weight: 0.5 to 8 parts of mulberry silk fiber, 10-15 parts of a first viscose fiber, 20-35 parts of a second viscose fiber, and 50-60 parts of a third viscose fiber.

24. The nonwoven fabric as claimed in claim 15, characterized in that the raw materials for preparing the nonwoven fabric also include the following components in parts by weight: 0.5 to 7 parts of mulberry silk fiber, 10-13 parts of a first viscose fiber, 20-30 parts of a second viscose fiber, and 50-55 parts of a third viscose fiber.

25. The nonwoven fabric according to claim 22, characterized in that the mulberry silk fiber has a fineness of 1.3-3.3 dtex and a length of 36-82 mm.

26. The nonwoven fabric according to claim 21, characterized in that the first viscose fiber is a soft fiber with a fineness of 0.5-1.11 dtex and a length of 38-57 mm.

27. The nonwoven fabric according to claim 21, characterized in that the second viscose fiber is a soft fiber with a fineness of 1.12-1.68 dtex and a length of 38-57 mm.

28. The nonwoven fabric according to claim 21, characterized in that the third viscose fiber is a fresh fiber with a fineness of 1.69-2.0 dtex and a length of 38-57 mm.

29. The nonwoven fabric according to claim 20, wherein the silk fibers are obtained by the following method:

(1) The cocoons were obtained by using a square clustering tool, with each fresh cocoon weighing 1.8–2.0 g, fresh shell weighing 0.40–0.44 g, and dry shell weighing 0.36–0.38 g; the total length of the cocoon silk was 1300–1500 m, and the cocoon silk weight was 0.40–0.44 g;

(2) Drying silkworm cocoons;

(3) Cocoon soaking and silk reeling;

(4) Cut the cocoon silk to obtain silk fiber.

30. The nonwoven fabric according to claim 29, wherein the silkworm cocoons are spring silkworm cocoons.

31. The nonwoven fabric according to claim 29, characterized in that in step (1), the diameter of the single filament of the cocoon silk is 13-18 microns and the average fineness is 2.8-3.3 denier.

32. The nonwoven fabric according to claim 29, characterized in that in the step (1), the length of the cocoon filaments is a common multiple of 36-82 mm.

33. The nonwoven fabric according to claim 29, characterized in that in step (3), biological enzymes are added to the cocoons soaked at 40-60°C.

34. The nonwoven fabric according to claim 33, wherein the biological enzyme is papain.

35. The nonwoven fabric according to claim 29, wherein the length of the cut cocoon filaments is 36-82 mm.

36. The nonwoven fabric according to claim 20, characterized in that the sericin content in the silk fiber is 6-9wt%, the fiber length is 36-82 mm, and the fiber fineness is 1.3-3.3 dtex.

37. The nonwoven fabric according to any one of claims 15 to 36, characterized in that the nonwoven fabric is a nonwoven fabric with a triple helix structure.

38. Use of the composition according to any one of claims 1 to 11 in the preparation of non-woven fabrics.

39. The use according to claim 38, characterized in that the non-woven fabric is a non-woven fabric used for preparing soft towels.

40. The use according to claim 38, characterized in that the dosage of the composition is 1-10 kg/ton of non-woven fabric.

41. The use according to claim 38, characterized in that the dosage of the composition is 1-6 kg/ton of non-woven fabric.

42. The use according to claim 38, characterized in that the dosage of the composition is 1-4 kg/ton of non-woven fabric.

43. The use according to claim 38, characterized in that the dosage of the composition is 3 kg/ton of non-woven fabric.

44. The use according to claim 38, characterized in that the non-woven fabric is a non-woven fabric with a triple helix structure.

45. The use according to claim 38, characterized in that the non-woven fabric is a soft towel.

46. A method for preparing the nonwoven fabric according to claim 15, characterized in that it comprises the following steps:

(1) Opening the viscose fiber for the first time;

(2) mixing silk fiber and viscose fiber to obtain mixed fiber;

(3) opening the mixed fiber in step (2) for a second time;

(4) Combing, cross-laying, pulling, and hydroentangling to obtain wet cloth;

(5) removing free water from the wet cloth;

(6) contacting the wet cloth from which free water has been removed with the fiber treating agent;

(7) drying to obtain the nonwoven fabric.

47. The method as claimed in claim 46 is characterized in that the viscose fibers are opened for the first time to form an opening section, and then the silk fibers are evenly placed into the opening section.

48. The method as claimed in claim 46, characterized in that in step (3), the mixed fibers after the second opening pass through a cotton storage box and are then transferred to a pneumatic cotton box, which feeds the mixed fibers into a carding machine.

49. The method of claim 48, wherein the carding machine uses an S-type feeding mode to card the mixed fibers into single fibers.

50. The method according to claim 46, characterized in that in step (7), the drying temperature is 80-150°C.

51. The method according to claim 46, characterized in that in step (7), the drying temperature is 105-140°C.

52. The method of claim 46, wherein in step (7), the drying temperature is 110-135°C.

53. The method of claim 46, wherein in step (7), the drying temperature is 110-125°C.

54. The method according to claim 46, characterized in that in step (6), the amount of the fiber treatment agent used is 1-10 kg/ton of non-woven fabric.

55. The method according to claim 46, characterized in that in step (6), the amount of the fiber treatment agent used is 1-6 kg/ton of non-woven fabric.

56. The method according to claim 46, characterized in that in step (6), the amount of the fiber treatment agent used is 1-4 kg/ton of non-woven fabric.

57. The method according to claim 46, characterized in that in step (6), the amount of the fiber treatment agent used is 3 kg/ton of non-woven fabric.

58. The method of claim 46, wherein the nonwoven fabric is a nonwoven fabric having a triple helix structure.