CN111005159A - Non-woven fabric applied to paper diaper core wrapping and production method thereof - Google Patents
Non-woven fabric applied to paper diaper core wrapping and production method thereof Download PDFInfo
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- CN111005159A CN111005159A CN201911395141.7A CN201911395141A CN111005159A CN 111005159 A CN111005159 A CN 111005159A CN 201911395141 A CN201911395141 A CN 201911395141A CN 111005159 A CN111005159 A CN 111005159A
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/005—Synthetic yarns or filaments
- D04H3/007—Addition polymers
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D13/00—Complete machines for producing artificial threads
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
- D04H3/03—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments at random
- D04H3/033—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments at random reorientation immediately after yarn or filament formation
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/14—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B21/00—Successive treatments of textile materials by liquids, gases or vapours
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C3/00—Stretching, tentering or spreading textile fabrics; Producing elasticity in textile fabrics
- D06C3/06—Stretching, tentering or spreading textile fabrics; Producing elasticity in textile fabrics by rotary disc, roller, or like apparatus
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D10B2321/02—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins
- D10B2321/022—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polypropylene
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
- D10B2401/02—Moisture-responsive characteristics
- D10B2401/022—Moisture-responsive characteristics hydrophylic
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The invention discloses a production method of fluffy flow-guiding non-woven fabric, which comprises the following steps: (1) mixing raw materials to prepare a mixture, wherein the raw materials are calculated according to the following weight percentage: 92-96% of polypropylene and 4-8% of propenyl plasticizer; (2) extruding and melting the mixture to form a hot melt; (3) spinning the hot melt; (4) cooling the filaments sprayed in the step (3) to obtain primary filaments, drafting the primary filaments by airflow to obtain fibers, and lapping the fibers to form a fiber web; (5) carrying out hot rolling on the fiber web prepared in the step (4) to obtain non-woven fabric; (6) performing after-treatment on the non-woven fabric to obtain fluffy non-woven fabric; (7) and (4) carrying out hydrophilic and drying treatment on the fluffy non-woven fabric obtained in the step (6) to obtain a finished product. The invention can replace fluffy cotton to manufacture an ultrathin core body, and solves the problem that the ultrathin core body cannot be manufactured by fluffy cotton at present.
Description
Technical Field
The invention relates to the technical field of non-woven fabrics, in particular to a non-woven fabric applied to diaper core wrapping and a production method thereof.
Background
The existing baby diapers, pull-ups, adult diapers and the like generally adopt core structures to replace traditional fluff pulp and diversion layer materials, and the core structures can effectively help liquid to be quickly conducted from a surface layer to an inner layer, temporarily store and transport the liquid and enable the liquid to be diffused and distributed, so that the liquid can quickly leave the skin of a user, and the skin is kept dry and comfortable.
The core body structure at present generally comprises a covering material positioned on a surface layer and a fluffy flow guide layer covered by the covering material, wherein a water absorbing material is mixed in the fluffy flow guide layer, the existing covering material is non-woven fabric, the fluffy flow guide layer is fluffy cotton, and the water absorbing material is high molecular water absorbing resin. Above-mentioned core structure is inside through non-woven fabrics and fluffy cotton with liquid water conservancy diversion to core structure, then absorbs water through polymer water-absorbent resin, and fluffy cotton water conservancy diversion effect is poor on the one hand, and on the other hand fluffy cotton is generally great in thickness, consequently leads to the core structure thicker, can't accomplish ultra-thin core structure. At present, in order to reduce the thickness of a core body structure, the using amount of fluffy cotton can only be reduced, and the comfort level and the flow guide effect are poorer after the using amount of the fluffy cotton is reduced. At present, a material capable of replacing fluffy cotton does not exist, and the ultrathin core body structure is realized on the premise of ensuring high comfort level and good flow guide effect.
Disclosure of Invention
Aiming at the prior art, the invention aims to provide a non-woven fabric applied to the core-spun of a paper diaper and a production method thereof. According to the invention, through the raw material formula, the consumption of each raw material and the matching with the production method, especially the after-finishing step in the production method, on the premise of ensuring the flow guide effect, the better softness and fluffy effect of the non-woven fabric are realized, so that the non-woven fabric can replace fluffy cotton.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a non-woven fabric applied to core wrapping of paper diapers and a production method thereof, and the non-woven fabric comprises the following steps: (1) mixing raw materials to prepare a mixture, wherein the raw materials are calculated according to the following weight percentage: 92-96% of polypropylene and 4-8% of propenyl plasticizer;
(2) extruding and melting the mixture to form a hot melt;
(3) spinning the hot melt;
(4) cooling the filaments sprayed in the step (3) to obtain primary filaments, drafting the primary filaments by airflow to obtain fibers, and lapping the fibers to form a fiber web;
(5) carrying out hot rolling on the fiber web prepared in the step (4) to obtain non-woven fabric;
(6) performing after-treatment on the non-woven fabric to obtain fluffy non-woven fabric, wherein the after-treatment is stretching and shaping treatment, the stretching is performed in three stages while hot air heating is performed, the three-stage stretching is performed through a first stretching roller, a second stretching roller and a third stretching roller respectively, the speed of the first stretching roller is 10% faster than that of the hot rolling speed, the speed of the second stretching roller is 10% faster than that of the first stretching roller, and the speed of the third stretching roller is 10% faster than that of the second stretching roller; the arrangement mode of the fibers is changed through three-stage stretching, and the original flat fiber web is changed into fluffy through longitudinal stretching;
(7) and (4) carrying out hydrophilic and drying treatment on the fluffy non-woven fabric obtained in the step (6) to obtain a finished product.
Preferably, in the step (2), the extrusion melting is carried out in a screw extruder, the screw temperature is 200-280 ℃, and the hot melt temperature is 250-270 ℃.
Preferably, in the step (3), the spinning is carried out by a spinneret plate with the aperture of 0.4-0.8 mm, and the spinning temperature is 250-280 ℃.
Preferably, before spinning, the hot melt is filtered and metered by a filter and a metering pump, and the filtering and metering are carried out at the temperature of 220-250 ℃ and under the pressure of 3-15 MPa.
Preferably, in the step (4), the ejected filaments are cooled by side cold air in a cooling air box, wherein the temperature of the cooling air box is 15-20 ℃, and the speed of the cooling air is 0.2-1.5 m/s.
Preferably, in the step (4), the air draft is performed in an air draft device.
Preferably, the fiber is separately laid on a curtain former to form a web.
Preferably, in the step (5), the hot rolling temperature is 140-160 ℃ and the pressure is 1200-3000 Pa.
Preferably, in the step (5), the hot rolling speed is 280-320 m/min.
Preferably, in the step (6), the temperature of hot air heating during stretching is 60 to 90 ℃.
Preferably, the stretched nonwoven fabric is set in a setting machine so that the nonwoven fabric is less likely to deform.
Preferably, in the step (7), the non-woven fabric is subjected to hydrophilic and drying treatment by hydrophilic drying equipment, the hydrophilic reagent is M612667 of Golston technologies, USA, the mass concentration of the hydrophilic reagent is 5%, and the sizing rotation speed is 30-40 rpm.
Preferably, in the step (7), the oven temperature during drying is 60 ℃.
In a second aspect of the invention, a fluffy flow-guiding non-woven fabric prepared by the production method is provided.
In a third aspect of the invention, there is provided the use of the bulky, fluid-directing nonwoven described above in the preparation of a bulky, fluid-directing layer of a core structure for a disposable hygiene article.
Preferably, the fluffy flow-guiding non-woven fabric can also be used for preparing a coating material of a core body structure.
Preferably, the disposable sanitary article comprises baby diapers, pull-ups and adult diapers.
The invention has the beneficial effects that:
(1) the non-woven fabric prepared by the invention can replace fluffy cotton in the original core structure, so that the prepared core structure has higher comfort and better flow guide effect, and the non-woven fabric can also be used for replacing the original coating material because the coating material in the original core structure is the non-woven fabric;
(2) by the raw material formula and the use amount of each raw material, and the matching with the production method, especially the post-finishing step in the production method, on the premise of ensuring the flow guide effect of the non-woven fabric, the non-woven fabric realizes better softness and fluffy effect, so that the non-woven fabric can replace fluffy cotton;
(3) the non-woven fabric produced by the invention is softer and thinner than fluffy cotton, and the absorption speed, the flow guide effect and the water locking effect are better than the fluffy cotton, so that the ultrathin core body can be manufactured on the premise of ensuring high comfort level and good flow guide effect, and the problem that the ultrathin core body cannot be manufactured by the fluffy cotton at present is solved.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. 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 application belongs.
The polypropylene used in the examples of the present invention was PP3155E5 manufactured by Exxon Mobil, USA, and the acryl-based plasticizer was vm6202FL or vm7050FL manufactured by Exxon Mobil, USA.
Example 1: preparation of fluffy flow-guiding non-woven fabric
(1) Mixing raw materials to prepare a mixture, wherein the raw materials are calculated according to the following weight percentage: 92% of polypropylene and 8% of propenyl plasticizer;
(2) extruding and melting the mixture in a screw extruder to form a hot melt, wherein the temperature of the screw is 260 ℃, and the temperature of the hot melt is 250 ℃;
(3) filtering and metering the hot melt by a filter and a metering pump under the conditions of the temperature of 220 ℃ and the pressure of 3 MPa; spinning the hot melt, wherein the spinning is carried out by a spinneret plate with the aperture of 0.4-0.8 mm, and the spinning temperature is 250 ℃;
(4) cooling the filaments sprayed in the step (3) by side cold air in a cooling air box to obtain primary filaments, wherein the temperature of the cooling air box is 15-20 ℃, and the speed of the cooling air is 0.2-1.5 m/s; the as-grown filaments are drafted by airflow to obtain fibers, and the fibers are divided and laid on a net curtain forming device to form a fiber net;
(5) carrying out hot rolling on the fiber web prepared in the step (4) to obtain non-woven fabric, wherein the hot rolling temperature is 140 ℃, the pressure is 3000Pa, and the hot rolling speed is 280-320 m/min;
(6) performing after-treatment on the non-woven fabric to obtain fluffy non-woven fabric, wherein the after-treatment is stretching and shaping treatment, the stretching is performed in three stages while hot air heating is performed, the three-stage stretching is performed through a first stretching roller, a second stretching roller and a third stretching roller respectively, the speed of the first stretching roller is 10% faster than that of the hot rolling speed, the speed of the second stretching roller is 10% faster than that of the first stretching roller, and the speed of the third stretching roller is 10% faster than that of the second stretching roller; the temperature of hot air heating is 60 ℃ during stretching; the shaping is carried out in a shaping machine;
(7) carrying out hydrophilic and drying treatment on the fluffy non-woven fabric obtained in the step (6) through hydrophilic drying equipment to obtain a finished product; the hydrophilic reagent is M612667 of Golston science and technology company, the mass concentration of the hydrophilic reagent for hydrophilic treatment is 5%, the starching rotation speed is 30-40rpm, and the oven temperature is 60 ℃ during drying.
Example 2: preparation of fluffy flow-guiding non-woven fabric
(1) Mixing raw materials to prepare a mixture, wherein the raw materials are calculated according to the following weight percentage: 96% of polypropylene and 4% of propenyl plasticizer;
(2) extruding and melting the mixture in a screw extruder to form a hot melt, wherein the screw temperature is 280 ℃, and the hot melt temperature is 270 ℃;
(3) filtering and metering the hot melt by a filter and a metering pump under the conditions of 250 ℃ and 15 MPa; spinning the hot melt, wherein the spinning is carried out by a spinneret plate with the aperture of 0.4-0.8 mm, and the spinning temperature is 280 ℃;
(4) cooling the filaments sprayed in the step (3) by side cold air in a cooling air box to obtain primary filaments, wherein the temperature of the cooling air box is 15-20 ℃, and the speed of the cooling air is 0.2-1.5 m/s; the as-grown filaments are drafted by airflow to obtain fibers, and the fibers are divided and laid on a net curtain forming device to form a fiber net;
(5) carrying out hot rolling on the fiber web prepared in the step (4) to obtain non-woven fabric, wherein the hot rolling temperature is 160 ℃, the pressure is 1200Pa, and the hot rolling speed is 280-320 m/min;
(6) performing after-treatment on the non-woven fabric to obtain fluffy non-woven fabric, wherein the after-treatment is stretching and shaping treatment, the stretching is performed in three stages while hot air heating is performed, the three-stage stretching is performed through a first stretching roller, a second stretching roller and a third stretching roller respectively, the speed of the first stretching roller is 10% faster than that of the hot rolling speed, the speed of the second stretching roller is 10% faster than that of the first stretching roller, and the speed of the third stretching roller is 10% faster than that of the second stretching roller; the temperature of hot air heating is 90 ℃ during stretching; the shaping is carried out in a shaping machine;
(7) carrying out hydrophilic and drying treatment on the fluffy non-woven fabric obtained in the step (6) through hydrophilic drying equipment to obtain a finished product; the hydrophilic reagent is M612667 of Golston science and technology company, the mass concentration of the hydrophilic reagent for hydrophilic treatment is 5%, the starching rotation speed is 30-40rpm, and the oven temperature is 60 ℃ during drying.
Example 3: preparation of fluffy flow-guiding non-woven fabric
(1) Mixing raw materials to prepare a mixture, wherein the raw materials are calculated according to the following weight percentage: 95% of polypropylene and 5% of propenyl plasticizer;
(2) extruding and melting the mixture in a screw extruder to form a hot melt, wherein the temperature of the screw is 260 ℃, and the temperature of the hot melt is 250 ℃;
(3) filtering and metering the hot melt by a filter and a metering pump under the conditions of 230 ℃ and 8 MPa; spinning the hot melt, wherein the spinning is carried out by a spinneret plate with the aperture of 0.4-0.8 mm, and the spinning temperature is 260 ℃;
(4) cooling the filaments sprayed in the step (3) by side cold air in a cooling air box to obtain primary filaments, wherein the temperature of the cooling air box is 15-20 ℃, and the speed of the cooling air is 0.2-1.5 m/s; the as-grown filaments are drafted by airflow to obtain fibers, and the fibers are divided and laid on a net curtain forming device to form a fiber net;
(5) carrying out hot rolling on the fiber web prepared in the step (4) to obtain non-woven fabric, wherein the hot rolling temperature is 150 ℃, the pressure is 2000Pa, and the hot rolling speed is 280-320 m/min;
(6) performing after-treatment on the non-woven fabric to obtain fluffy non-woven fabric, wherein the after-treatment is stretching and shaping treatment, the stretching is performed in three stages while hot air heating is performed, the three-stage stretching is performed through a first stretching roller, a second stretching roller and a third stretching roller respectively, the speed of the first stretching roller is 10% faster than that of the hot rolling speed, the speed of the second stretching roller is 10% faster than that of the first stretching roller, and the speed of the third stretching roller is 10% faster than that of the second stretching roller; the temperature of hot air heating is 80 ℃ during stretching; the shaping is carried out in a shaping machine;
(7) carrying out hydrophilic and drying treatment on the fluffy non-woven fabric obtained in the step (6) through hydrophilic drying equipment to obtain a finished product; wherein the hydrophilic reagent adopts M612667 of Golston science and technology company of America, the mass concentration of the hydrophilic reagent adopted for hydrophilic treatment is 5%, the starching rotation speed is 30-40rpm, and the oven temperature is 60 ℃ during drying.
The fluffy flow-guiding non-woven fabric finished products prepared in the examples 1 to 3 are subjected to performance detection, wherein the breaking strength and the elongation are detected by a detection method specified in ASTM D5035; the hydrophilic effect is measured by adopting a hydrophilic drop test, water is dropped on the surface of the non-woven fabric, and the time for soaking all water is measured; the transverse softness and the longitudinal softness are measured by adopting an American TA softness tester; the results are shown in Table 1.
Table 1:
as can be seen from Table 1, the fluffy flow-guiding non-woven fabrics produced by the embodiments 1-3 of the invention have no obvious difference in performance, wherein the embodiment 3 has the best effect; the fluffy flow-guiding non-woven fabric produced by the invention has better hydrophilic effect and softening effect.
Application example 1: the lofty fluid-directing nonwoven fabric prepared in example 3 was used as a lofty fluid-directing layer and a conventional nonwoven fabric was used as a cover material to prepare a core structure.
Application example 2: the fluffy flow-guiding non-woven fabric prepared in example 3 was used as a core structure prepared from the fluffy flow-guiding layer and the covering material.
Comparative example 1: the core body structure is prepared by taking fluffy cotton as a fluffy flow guide layer and taking conventional non-woven fabric as a coating material.
The core structures of application example 1, application example 2 and comparative example 1 adopt the high-molecular water-absorbent resin which is the same product of the same manufacturer and the same batch.
The core structures prepared in application example 1, application example 2 and comparative example 1 were subjected to performance testing, the test method being as follows:
(1) preparing 0.9% physiological saline, taking core structures with similar mass of the application examples 1, 2 and 1, and sticking the core structures with the water absorption surfaces upward on an organic glass plate test bed;
(2) finding a central point of each core body structure diagonal line, and marking;
(3) placing the liquid adding plate at the center of the core body structure, adding 0.6kg weight on each side, pouring 60ml (or 80ml) of prepared saline water into a T-shaped flat plate pressurizing mold, timing, and when the circle in the barrel disappears, terminating timing, and calculating the absorption time which is the absorption time of 0min in the table;
(4) measuring the average value of the diffusion length of the surface layer of the core body structure without taking down the liquid feeding plate when the time is 4 minutes;
(5) when the time is 5 minutes, pouring 60ml (or 80ml) of prepared saline into the liquid adding plate, timing, stopping timing when a circle in the barrel disappears, and calculating the absorption time;
(6) measuring the average value of the diffusion length without taking down the liquid adding plate at 9 minutes, and recording the data;
(7) taking down the liquid adding plate 10 minutes later, covering the weighed round filter paper (about 12-18g) with the diameter of 11cm with an organic glass plate with the diameter of 11cm, pressurizing the organic glass plate with the weight of 1.25kg above the organic glass plate for 1 minute, quickly weighing the back-osmosis filter paper, and recording data;
(8) after the rewet test is finished, the liquid adding plate is placed at the center of the core body structure, weights of 0.6kg are added on two sides of the core body structure, when 12 minutes, 60ml (or 80ml) of prepared saline water is poured into the liquid adding plate and timing is carried out, when a circle in the barrel disappears, the timing is terminated, and the absorption time is calculated;
(9) measuring the average value of the diffusion length without taking down the liquid adding plate at 21 minutes, and recording the data;
(10) taking down the liquid adding plate 22 minutes later, covering the weighed round filter paper (about 12-18g) with the diameter of 11cm with an organic glass plate with the diameter of 11cm, pressurizing the organic glass plate with the weight of 1.25kg above the organic glass plate for 1 minute, quickly weighing the back-osmosis filter paper, and recording data;
(11) after the rewet test is finished, the liquid adding plate is placed at the center of the core body structure, weights of 0.6kg are added on two sides of the core body structure, 60ml (or 80ml) of prepared saline water is poured into the liquid adding plate and is timed when 24 minutes, and the timing is ended when a circle in the barrel disappears, and the absorption time is calculated;
(12) measuring the average value of the diffusion length without taking down the liquid adding plate when the time is 33 minutes, and recording the data;
(13) and (3) taking down the liquid adding plate at 34 minutes, covering the weighed round filter paper (about 12-18g) with the phi 11cm on the organic glass plate with the phi 11cm, pressurizing the organic glass plate with 1.25kg of weight at the upper part for 1 minute, quickly weighing the back-osmosis filter paper, and recording data. The experiment was repeated 5 times and the calculated average values are shown in table 2.
Table 2:
the absorption time of application example 1 and application example 2 is much shorter than that of comparative example 1, which shows that the faster the absorption of application example 1 and application example 2 is; the diffusion lengths of the application example 1 and the application example 2 are not obviously different at 4min and 9min, and are larger than that of the comparative example 1 at 21min and 33min, so that the flow guide effect of the application example 1 and the application example 2 is better; the reverse osmosis amount of the application example 1 and the application example 2 is obviously smaller than that of the comparative example 1, which shows that the water absorption and locking functions of the application example 1 and the application example 2 are better; the effect of application example 2 is slightly better than that of application example 1 in terms of the comprehensive absorption time, diffusion length and reverse osmosis amount, because application example 2 uses not only the fluffy flow-guiding non-woven fabric as the core structure but also as the wrapping material, the effect is better.
As can be seen from table 2, the fluffy flow-guiding non-woven fabric prepared by the invention can replace fluffy cotton in the core structure, and can also be used as a wrapping material of the core structure.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. The production method of the fluffy flow-guiding non-woven fabric is characterized by comprising the following steps:
(1) mixing raw materials to prepare a mixture, wherein the raw materials are calculated according to the following weight percentage: 92-96% of polypropylene and 4-8% of propenyl plasticizer;
(2) extruding and melting the mixture to form a hot melt;
(3) spinning the hot melt;
(4) cooling the filaments sprayed in the step (3) to obtain primary filaments, drafting the primary filaments by airflow to obtain fibers, and lapping the fibers to form a fiber web;
(5) carrying out hot rolling on the fiber web prepared in the step (4) to obtain non-woven fabric;
(6) performing after-treatment on the non-woven fabric to obtain fluffy non-woven fabric, wherein the after-treatment is stretching and shaping treatment, the stretching is performed in three stages while hot air heating is performed, the three-stage stretching is performed through a first stretching roller, a second stretching roller and a third stretching roller respectively, the speed of the first stretching roller is 10% faster than that of the hot rolling speed, the speed of the second stretching roller is 10% faster than that of the first stretching roller, and the speed of the third stretching roller is 10% faster than that of the second stretching roller;
(7) and (4) carrying out hydrophilic and drying treatment on the fluffy non-woven fabric obtained in the step (6) to obtain a finished product.
2. The production method according to claim 1, characterized in that: in the step (2), the extrusion melting is carried out in a screw extruder, the temperature of the screw is 200-280 ℃, and the temperature of the hot melt is 250-270 ℃.
3. The production method according to claim 1, characterized in that: in the step (3), the spinning is carried out by a spinneret plate with the aperture of 0.4-0.8 mm, and the spinning temperature is 250-280 ℃.
4. The production method according to claim 1, characterized in that: in the step (4), the sprayed filaments are cooled by lateral cold air in a cooling air box, the temperature of the cooling air box is 15-20 ℃, and the speed of the cooling air is 0.2-1.5 m/s.
5. The production method according to claim 1, characterized in that: in the step (5), the hot rolling temperature is 140-160 ℃, and the pressure is 1200-3000 Pa.
6. The production method according to claim 1, characterized in that: in the step (6), the hot air heating temperature during stretching is 60-90 ℃.
7. The production method according to claim 1, characterized in that: in the step (7), the mass concentration of the hydrophilic reagent adopted for hydrophilic treatment is 5%, and the starching rotation speed is 30-40 rpm.
8. Fluffy flow-guiding non-woven fabric prepared by the production method of claims 1-7.
9. Use of the lofty acquisition nonwoven fabric of claim 8 in the preparation of a lofty acquisition layer of a core structure for disposable hygiene articles.
10. Use according to claim 9, characterized in that: the fluffy flow guide non-woven fabric can also be used for preparing a coating material of the core body structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911395141.7A CN111005159A (en) | 2019-12-30 | 2019-12-30 | Non-woven fabric applied to paper diaper core wrapping and production method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911395141.7A CN111005159A (en) | 2019-12-30 | 2019-12-30 | Non-woven fabric applied to paper diaper core wrapping and production method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112998958A (en) * | 2021-02-26 | 2021-06-22 | 福建省明辉机械制造有限公司 | Preparation method of self-breathing sanitary towel |
| CN114808327A (en) * | 2022-04-22 | 2022-07-29 | 智邦（天津）卫生用品科技有限公司 | Fluffy non-woven fabric preparation method and fluffy non-woven fabric |
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Application publication date: 20200414 |