Hypoallergenic textile filling flakes for infants and young children and preparation method thereof

Abstract

The invention discloses a low-allergenic textile filling flake for infants and a preparation method thereof, and relates to the field of textiles. The low-allergenic textile filling flake for infants is composed of anti-mite fiber, antibacterial fiber and low-melting-point fiber. The preparation method of the low-allergenic textile filling flake for infants comprises the following steps: step 1, preparing anti-mite fiber, antibacterial fiber and low-melting-point fiber; step 2, mixing the anti-mite fiber, antibacterial fiber and low-melting-point fiber to obtain infant textile mixed fiber after mixing; step 3, combing the infant textile mixed fiber into a flake state to obtain the low-allergenic textile filling flake for infants. The invention has a long lasting effective antibacterial effect.

Description

Technical Field

[0001] The invention relates to the field of textiles, in particular to textile filling fibers. Background Art

[0002] Infants and young children have delicate skin and are prone to allergies. Common skin allergies in infants and young children include contact allergic dermatitis and photosensitivity dermatitis. Contact allergic dermatitis is an acute or chronic dermatitis that occurs at the contact site due to contact of the skin or mucous membrane with sensitizing substances. Photosensitivity dermatitis is manifested by contact with photosensitive substances or objects, and then exposure to ultraviolet rays. Red spots, swelling, and blisters may appear within twelve hours.

[0003] Cotton fabrics such as infant clothes, quilt cores, and pillow cores continuously produce microfibers during long-term use. Microfiber and dust mite pollution can cause varying degrees of allergic reactions in infants and young children. Summary of the invention

[0004] The purpose of the present invention is to provide a low-allergenic textile filling flake for infants, wherein the fabric does not contain active substances and is not likely to cause contact allergies in infants.

[0005] The present invention also aims to provide a method for preparing a hypoallergenic textile filling flake for infants and young children, which is used to prepare a hypoallergenic textile filling flake for infants and young children.

[0006] The technical problem solved by the present invention can be achieved by adopting the following technical solutions:

[0007] A low-allergenic textile filling flake for infants, characterized in that it is composed of anti-mite fiber, antibacterial fiber, and low-melting-point fiber.

[0008] in,

[0009] The anti-mite fiber does not contain active substances that can cause allergic reactions in humans, and has quaternary ammonium salts cured on the surface;

[0010] Antimicrobial fibers do not contain active substances that can cause allergic reactions in humans, and they contain antimicrobial additives;

[0011] Low-melting-point fibers do not contain active substances that can cause allergic reactions in humans, and their melting point is no higher than 150°C.

[0012] Preferably, it is composed of 70% by mass of anti-mite fiber, 20% by mass of antibacterial fiber, and 10% by mass of low-melting-point fiber.

[0013] A method for preparing a low-allergenic textile filling flake for infants and young children, characterized in that it comprises the following steps: Step 1, preparing anti-mite fiber, antibacterial fiber, and low-melting-point fiber: the anti-mite fiber does not contain active substances that can cause allergic reactions in the human body, and has quaternary ammonium salt solidified on the surface; the antibacterial fiber does not contain active substances that can cause allergic reactions in the human body, and contains antibacterial additives; the low-melting-point fiber does not contain active substances that can cause allergic reactions in the human body, and has a melting point of no more than 150°C;

[0014] Step 2: Mix the anti-mite fiber, the antibacterial fiber and the low melting point fiber to obtain the infant textile mixed fiber;

[0015] Step 3: comb the infant textile mixed fibers into a flake state to obtain infant low-allergenic textile filling flakes.

[0016] Beneficial effects: First, the raw materials of the present invention do not contain active substances that can cause allergic reactions in humans, and can prevent infant skin allergies caused by active substances from the source. Secondly, the raw materials of the present invention are additionally provided with anti-mite and antibacterial substances, which can effectively destroy the living environment of mites and bacteria, and reduce the allergic reactions caused by microfibers and dust mite pollution to infants. Finally, the present invention selects the types of fibers, and the three selected fibers allow for better adhesion together with the help of low-melting-point fibers, thereby improving the situation of continuous generation of microfibers during long-term use. More importantly, the flakes of the present invention have a long-lasting effective antibacterial effect. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below.

[0018] About Hypoallergenic Textile Filling for Infants and Young Children

[0019] It is composed of 70% by mass of anti-mite fiber, 20% by mass of antibacterial fiber, and 10% by mass of low-melting-point fiber. Among them, the anti-mite fiber does not contain active substances that can cause allergic reactions in the human body, and quaternary ammonium salts are solidified on the surface. The antibacterial fiber does not contain active substances that can cause allergic reactions in the human body, and contains antibacterial additives. The low-melting-point fiber does not contain active substances that can cause allergic reactions in the human body, and the melting point is not higher than 150°C. The present invention selects the types of each fiber, and the low-allergenic textile filling flakes for infants and young children obtained after selection have excellent antibacterial, anti-mite, and low-allergenic effects, and the microfibers produced by long-term use are few, and the effective antibacterial effect lasts for a long time. The fiber fineness of the anti-mite fiber is 0.8D, and it is curled. Thereby, the fiber has its own elasticity.

[0020] Method for preparing low-allergenic textile filling flakes for infants and young children

[0021] The method comprises the following steps: step 1, preparing anti-mite fiber, antibacterial fiber and low-melting-point fiber: the anti-mite fiber does not contain active substances that can cause allergic reactions in humans, and has quaternary ammonium salts solidified on the surface; the antibacterial fiber does not contain active substances that can cause allergic reactions in humans, and contains antibacterial additives; the low-melting-point fiber does not contain active substances that can cause allergic reactions in humans, and has a melting point not higher than 150°C; step 2, mixing the anti-mite fiber, antibacterial fiber and low-melting-point fiber in a mass percentage ratio of 70:20:10 to obtain infant textile blended fiber; step 3, combing the infant textile blended fiber into flakes to obtain infant low-allergenic textile filling flakes.

[0022] The anti-mite fiber is preferably a polyester-based fiber with a quaternary ammonium salt solidified on the surface. The antibacterial fiber is preferably a polyester-based fiber containing an antibacterial additive. The low-melting point fiber is preferably a polyester-based fiber. The present invention selects the components of the fiber, and when the polyester-based fiber is melt-bonded, the bonding uniformity and consistency are good.

[0023] The preparation method of the anti-mite fiber preferably includes the following steps: Step 1: Petroleum refining: Petroleum is heated and cracked to obtain toluene, xylene, and ethylene, and terephthalic acid or dimethyl terephthalate and ethylene glycol are obtained after chemical processing; Step 2: Crystal polymerization: Dimethyl terephthalate and ethylene glycol are subjected to lipid exchange to obtain ethylene terephthalate, and polycondensation is performed to obtain polyethylene terephthalate polymer; or terephthalic acid and ethylene glycol are directly esterified to obtain ethylene terephthalate, and polycondensation is performed to obtain polyethylene terephthalate polymer; Step 3: Polyester chip production: After the polyethylene terephthalate polymer is dried, the chips are heated and melted, extruded and fed into a spinning box, and the melt streams ejected from the small holes of the spinneret are cooled and solidified by the cooling air flow to obtain polyester filaments; Step 4: First spray quaternary ammonium salt on the surface of the polyester filaments, and then spray liquid nitrogen, so that the quaternary ammonium salt is solidified on the surface of the polyester filaments to obtain anti-mite fibers. Preferably, in step 3, nitrogen can be mixed into the molten polyethylene terephthalate polymer. In this way, when the melt stream is ejected from the small holes of the spinneret, when the nitrogen in the melt stream is squeezed out or squeezed out, pits appear on the surface of the melt stream, thereby effectively increasing the surface area. In addition, the pits can better accommodate quaternary ammonium salts. Preferably, the melt stream is cooled by liquid nitrogen. Thereby, the nitrogen released is mixed with liquid nitrogen and then uniformly recycled and reused. Preferably, the first nozzle for spraying a solvent containing 3-(trimethoxysilyl)propyldimethyloctadecylammonium chloride and the second nozzle for spraying liquid nitrogen are fixed to the rear of the spinneret of the spinning machine. The melt stream ejected from the spinneret of the spinning machine first passes through the first nozzle and then passes through the second nozzle. The first nozzle is annular and has a hollow cavity therein, including a cylindrical inner wall, a cylindrical outer wall, and an annular end cover, the outer edge of the end cover is connected to the outer wall, the inner edge of the end cover is connected to the inner wall, and the inner wall side, the outer wall, and the end cover form the hollow cavity. An annular impeller is arranged in the hollow cavity, the impeller includes an annular base plate, fins arranged on the base plate at equal intervals, a feed port is opened on the outer wall, at least two discharge ports are opened at equal intervals on the inner wall side, and at least two guide ports are opened at equal intervals on the base plate.

[0024] The antibacterial agent is mixed with nitrogen and added together. On the one hand, the nitrogen plays a role in diluting the antibacterial agent and promoting the movement of the antibacterial agent, which can effectively increase the dispersion uniformity of the antibacterial agent in the polyethylene terephthalate polymer melt. On the other hand, the preparation method of the antibacterial fiber preferably includes the following steps: Step 1: Petroleum refining: Petroleum is heated and cracked to obtain toluene, xylene, and ethylene, and then chemically processed to obtain terephthalic acid or dimethyl terephthalate and ethylene glycol; Step 2: Crystal polymerization: Dimethyl terephthalate and ethylene glycol are subjected to ester exchange to obtain ethylene terephthalate, and polycondensation is performed to obtain polyethylene terephthalate polymer; or terephthalic acid and ethylene glycol are directly esterified to obtain ethylene terephthalate, and polycondensation is performed to obtain polyethylene terephthalate polymer; Step 3: Polyester chip production: After the polyethylene terephthalate polymer is dried, the chips are heated and melted, and together with the antibacterial additive, they are extruded into the spinning box, and the melt stream ejected from the small holes of the spinneret is cooled and solidified by the cooling airflow to obtain the antibacterial fiber. The chips are cut first and then the additives are added, so as to avoid the loss of the additives and accurately control the amount of the additives. In step 3, nitrogen can be mixed into the antibacterial adjuvant. On the one hand, nitrogen can dilute the antibacterial adjuvant and effectively promote the movement of the antibacterial adjuvant in the polyethylene terephthalate polymer melt, so that the antibacterial adjuvant is more evenly dispersed. On the other hand, when the melt stream is ejected from the small holes of the spinneret, when the nitrogen in the melt stream is squeezed out or broken, pits appear on the surface of the melt stream, thereby effectively increasing the surface area. Preferably, the melt stream is cooled by liquid nitrogen. Thereby, the released nitrogen is mixed with the liquid nitrogen and uniformly recycled and reused.

[0025] The method for preparing the low-melting-point fiber preferably includes the following steps: Step 1: Petroleum refining: Petroleum is heated and cracked to obtain toluene, xylene, and ethylene, and then chemically processed to obtain terephthalic acid or dimethyl terephthalate and ethylene glycol; Step 2: Crystal polymerization: Dimethyl terephthalate and ethylene glycol are subjected to ester exchange to obtain ethylene terephthalate, and polycondensation to obtain polyethylene terephthalate polymer; or terephthalic acid and ethylene glycol are directly esterified to obtain ethylene terephthalate, and polycondensation to obtain polyethylene terephthalate polymer; Step 3: Polyester chip production: After the polyethylene terephthalate polymer is dried, the chips are heated and melted, extruded and fed into a spinning box, and the melt streams ejected from the small holes of the spinneret are cooled and solidified by the cooling air flow to obtain low-melting-point fibers.

[0026] Regarding the preparation method of low-allergenic textile filling flakes for infants and young children, after step one and before step two, the anti-mite fiber, antibacterial fiber or low-melting-point fiber can be stretched to a fineness of 0.8D and then wound into a spiral curl. Preferably, the anti-mite fiber is wound clockwise and the antibacterial fiber is wound counterclockwise. Thereby, the different winding directions are utilized to improve the resilience of the mixed fibers. This scheme enables the flakes to have a slow rebound effect after being pressed, and can effectively disperse the pressure. Regarding step two, the mixing temperature is preferably the melting point temperature of the low-melting-point fiber, so that the low-melting-point fiber produces a bonded skin-core or parallel structure fiber, and then the anti-mite fiber and the antibacterial fiber are thermally bonded, thereby improving the adhesion strength between the three, thereby reducing the continuous generation of microfibers during long-term use. After step three, step four can also be included, which is to wind the low-allergenic textile filling flakes for infants and young children. Preferably, the following steps are included: opening, combing, and winding. The two windings cannot be omitted or combined. Two windings are one of the innovative features of the present invention. The first winding makes the fiber spirally curled. When the spirally curled fibers are mixed, the three fibers can be disorderly adhered instead of being adhered side by side. During the second winding, the infant textile filling fiber is spirally curled as a whole, and has locally spirally disordered fibers, so that the entire flocculent structure is more fluffy and more elastic. Preferably, during the first winding, only the anti-mite fiber is wound. The anti-mite fiber is surface-sprayed with quaternary ammonium salt. The greater the degree of winding, the greater the mass of quaternary ammonium salt per unit volume, which can effectively ensure the sterilization efficiency. The antibacterial fiber and the low-melting-point fiber that are not wound can be more easily extended into the anti-mite fiber, thereby increasing the fiber dosage per unit volume, and then improving the compactness of the filler.

[0027] The same raw materials and the same preparation method are used below to prepare low-allergenic textile filling flakes for infants and young children according to the raw material component proportions in the following table. The obtained low-allergenic textile filling flakes for infants and young children are then filled into pillows to test the performance of the pillows:

[0028]

[0029]

[0030] From the above table, it can be seen that the present invention selects the components of each fiber, and the infant low-allergenic textile filling flakes under this component ratio have good rebound effect, and the situation of microfiber generation during long-term use is improved.

[0031] In order to test the winding condition, a comparison group 7 was added. The only difference between comparison group 7 and comparison group 1 was that the anti-mite fiber, antibacterial fiber, and low-melting-point fiber of comparison group 7 were all wound, while only the anti-mite fiber was wound in comparison group 1, and the antibacterial fiber and low-melting-point fiber were not wound. The hardness of the pillow in comparison group 7 was lower than that of comparison group 1, and the resilience was better than that of comparison group 1, but after repeated ravage, the condition of the microfiber was worse than that of comparison group 1.

[0032] The product of the present invention is tested below:

[0033] The hypoallergenic test method is:

[0034] Test 1: Acute oral toxicity test

[0035] According to the Technical Specifications for Disinfection (2002 Edition), under the test conditions, the acute oral toxicity test LD50 of the tested samples to ICR mice was greater than 5000 mg / kg, and according to the toxicity classification, the test results were all non-toxic.

[0036] Test 2: A complete skin irritation test

[0037] According to the Technical Specifications for Disinfection (2002 Edition), under the experimental conditions, the test samples were subjected to a complete skin irritation test on rabbits, and the test results showed that they were non-irritating.

[0038] Test 3: Acute eye irritation test

[0039] According to the Technical Specifications for Disinfection (2002 Edition), under the experimental conditions, the test samples were tested for the acute eye irritation intensity of rabbits, and the test results showed that they were non-irritating.

[0040] The test method for anti-mite effect is:

[0041] Test 4: According to the evaluation of anti-mite performance of textiles (GB / T 24253-2009), the anti-mite effect of the test samples was tested by the repellency method. The test results showed that the repellency rate of dust mites in comparison group 1, comparison group 4, comparison group 5, comparison group 6 and comparison group 7 after washing 40 times reached 74%. The repellency rate of comparison group 2 and comparison group 3 was less than 60%.

[0042] The test method for antibacterial effect is:

[0043] Test 5: The antibacterial rates of the test samples against Candida albicans, Escherichia coli and Staphylococcus aureus were tested by the oscillation method. The test results showed that the antibacterial rates of control group 1, control group 6 and control group 7 could reach more than 99%.

[0044] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A method for preparing a low-allergenic textile filling flake for infants and young children, characterized in that: The method comprises the following steps: Step 1, preparing anti-mite fiber, antibacterial fiber and low melting point fiber: The anti-mite fiber does not contain active substances that can cause allergic reactions in humans, and has quaternary ammonium salts solidified on the surface. The preparation method of the anti-mite fiber comprises the following steps: Step 1: petroleum refining: petroleum is heated and cracked to obtain toluene, xylene, and ethylene, and terephthalic acid or dimethyl terephthalate and ethylene glycol are obtained after chemical processing; Step 2: crystal polymerization: dimethyl terephthalate and ethylene glycol are subjected to lipid exchange to obtain ethylene terephthalate, and polycondensation is performed to obtain polyethylene terephthalate polymer; or terephthalic acid and ethylene glycol are directly esterified to obtain ethylene terephthalate, and polycondensation is performed to obtain polyethylene terephthalate polymer. The polyethylene terephthalate polymer is obtained; Step 3: Production of polyester chips: After the polyethylene terephthalate polymer is dried, the chips are heated and melted, nitrogen is mixed into the molten polyethylene terephthalate polymer, and the chips are extruded and fed into a spinning box, and a thin melt stream is ejected from the small holes of a spinneret. When the nitrogen in the thin melt stream is squeezed out or broken, pits appear on the surface of the thin melt stream, which is cooled and solidified by the cooling airflow to obtain polyester filaments; Step 4: First, a quaternary ammonium salt is sprayed on the surface of the polyester filament, and then liquid nitrogen is sprayed, so that the quaternary ammonium salt is solidified on the surface of the polyester filament to obtain anti-mite fiber; The antibacterial fiber does not contain active substances that can cause allergic reactions in humans, and contains antibacterial additives. The preparation method of the antibacterial fiber includes the following steps: Step 1: Petroleum refining: Petroleum is heated and cracked to obtain toluene, xylene, and ethylene, and then chemically processed to obtain terephthalic acid or dimethyl terephthalate and ethylene glycol; Step 2: Crystal polymerization: Dimethyl terephthalate and ethylene glycol are subjected to lipid exchange to obtain ethylene terephthalate, and polycondensation is performed to obtain polyethylene terephthalate polymer; or terephthalic acid and ethylene glycol are directly esterified to obtain ethylene terephthalate, and polycondensation is performed to obtain polyethylene terephthalate polymer; Step 3: Polyester chip production: After the polyethylene terephthalate polymer is dried, the chips are heated and melted, and nitrogen is mixed into the antibacterial additives together with the antibacterial additives, and the chips are extruded into a spinning box, and the melt streams ejected from the small holes of the spinneret are cooled and solidified by the cooling air flow to obtain the antibacterial fiber; The low-melting-point fiber does not contain active substances that can cause allergic reactions in humans, and the melting point is not higher than 150°C. The preparation method of the low-melting-point fiber includes the following steps: Step 1: Petroleum refining: Petroleum is heated and cracked to obtain toluene, xylene, and ethylene, and terephthalic acid or dimethyl terephthalate and ethylene glycol are obtained after chemical processing; Step 2: Crystal polymerization: Dimethyl terephthalate and ethylene glycol are subjected to lipid exchange to obtain ethylene terephthalate, and polycondensation is performed to obtain polyethylene terephthalate polymer; or terephthalic acid and ethylene glycol are directly esterified to obtain ethylene terephthalate, and polycondensation is performed to obtain polyethylene terephthalate polymer; Step 3: Polyester chip production: After the polyethylene terephthalate polymer is dried, the chips are heated and melted, extruded and fed into a spinning box, and the melt streams ejected from the small holes of the spinneret are cooled and solidified by the cooling air flow to obtain low-melting-point fibers; Step 2: Mix the anti-mite fiber, the antibacterial fiber and the low melting point fiber to obtain the infant textile mixed fiber; Step 3: comb the infant textile mixed fibers into a flake state to obtain infant low-allergenic textile filling flakes.

2. The method for preparing a hypoallergenic textile filling flake for infants according to claim 1, characterized in that: After step one and before step two, the anti-mite fiber, antibacterial fiber or low-melting-point fiber is stretched to a fineness of 0.8D and then wound into a spiral curling shape, wherein the anti-mite fiber is wound clockwise and the antibacterial fiber is wound counterclockwise.

3. The method for preparing a hypoallergenic textile filling flake for infants according to claim 1, characterized in that: The mixing temperature in step 2 is the melting point of the low-melting-point fiber.

4. The method for preparing a hypoallergenic textile filling flake for infants according to claim 1, characterized in that: The method also includes step 4, in which only the anti-mite fiber is wound for the first time, so that the anti-mite fiber is spirally curled, and the antibacterial fiber and the low-melting point fiber are not wound; and in the second winding, the infant textile filling fiber is spirally curled as a whole and has partially spiral disordered fibers.

5. The hypoallergenic textile filling flakes for infants prepared by the method for preparing the hypoallergenic textile filling flakes for infants according to any one of claims 1 to 4, characterized in that: The fiber is composed of 70% by weight of anti-mite fiber, 20% by weight of antibacterial fiber and 10% by weight of low melting point fiber.

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