CN107190417B - Production method of non-woven fabric with unidirectional elasticity - Google Patents
Production method of non-woven fabric with unidirectional elasticity Download PDFInfo
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- CN107190417B CN107190417B CN201710403938.1A CN201710403938A CN107190417B CN 107190417 B CN107190417 B CN 107190417B CN 201710403938 A CN201710403938 A CN 201710403938A CN 107190417 B CN107190417 B CN 107190417B
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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
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4374—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece using different kinds of webs, e.g. by layering webs
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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
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/098—Melt spinning methods with simultaneous stretching
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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
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4282—Addition polymers
- D04H1/4291—Olefin series
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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
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4391—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece characterised by the shape of the fibres
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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
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/542—Adhesive fibres
- D04H1/544—Olefin series
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The invention provides a production method of a non-woven fabric with unidirectional elasticity, belonging to the technical field of non-woven fabric production, and the method comprises the following steps: carrying out melt extrusion on the propylene polymer elastomer in a screw extruder through a vacuum pumping system to obtain a hot melt; filtering, metering and dispensing the hot melt; spinning the hot melt which is distributed and metered, and cooling the spun filaments by cold air to obtain nascent filaments; drafting the as-grown filaments to obtain fibers with certain fineness; spreading the fibers on a base cloth of the spun-bonded non-woven fabric with the elongation of 180% -260% to form a net curtain together; carrying out hot rolling on the net curtain to obtain non-woven fabric; the non-woven fabric is dried by an oven and rolled by a winder to form the unidirectional elastic non-woven fabric. Directly spray on ordinary spunbonded nonwoven through the spunbonded nozzle after fusing elastomer material, rethread rolling mill pressfitting, simple process, convenient operation compares with traditional elasticity non-woven fabrics, and the practicality is higher, and the cost is lower.
Description
Technical Field
The invention relates to the technical field of non-woven fabric production, in particular to a production method of non-woven fabric with unidirectional elasticity.
Background
The non-woven fabric is a new-generation environment-friendly fabric, and has the advantages of good strength, air permeability, water resistance, environmental friendliness, flexibility, no toxicity, no odor, low price and the like. If the material is placed outdoors for natural decomposition, the longest service life is only 90 days, the material is placed indoors for decomposition within 8 years, and the material is nontoxic and harmless during combustion, so that the environment is not polluted, and the environment is protected. The non-woven fabric product has the advantages of rich color, brightness, fashion, environmental protection, wide application, elegant appearance, various patterns and styles, light weight, environmental protection and recycling, and is internationally recognized as an environmental protection product for protecting the earth ecology.
The non-woven fabrics of different characteristics can be used in different fields, however, the spunbonded non-woven fabrics lack elasticity due to the self limiting factor at present, the requirements in life cannot be met, and a novel non-woven fabric material with unidirectional elasticity is obtained through compounding at present.
From the aspect of the manufacturing process, the product needs simple equipment, has short process flow, low investment, fine fiber degree, good flexibility, strong comfort and good elasticity. Due to the characteristics, the product is widely used in the fields of clothing, biomedical materials (such as disposable baby diapers, feminine hygiene products, bandages, gloves, close-fitting protective clothing and the like), decoration, packaging and the like, and is a high value-added product with great development prospect.
The elastic non-woven fabric manufactured by the traditional process is formed by adding a layer of folded membrane between two layers of common spun-bonded non-woven fabrics so as to achieve the purpose of elasticity, the production process is complex, the cost is high, the practicability is poor, and the market demand can not be met by mass production.
Disclosure of Invention
The technical task of the invention is to solve the defects of the prior art and provide a production method of a non-woven fabric with unidirectional elasticity.
The technical scheme of the invention is realized in the following way, and the production method of the non-woven fabric with the one-way elasticity is characterized in that the production line of the method comprises a feeding system, a screw extruder, a filtering system, a metering pump, a spinneret plate, a side cold air cooling system, a drafting device, a net curtain former, a hot rolling mill, an oven and a winding machine;
a screw extruder is arranged at the downstream of the feeding system, the feeding system is connected with the inlet end of the screw extruder, the outlet end of the screw extruder is connected with a filtering system, the downstream of the filtering system is connected with a metering pump, the downstream of the metering pump is connected with a spinneret plate, a side cold air cooling system is arranged below the spinneret plate, a drafting device is arranged below the side cold air cooling system, a net curtain forming device is arranged below the drafting device,
the metering pump, the spinneret plate, the side cold air cooling system and the drafting device are all arranged on the same vertical longitudinal axis;
a base fabric roll of spun-bonded nonwoven fabric having an elongation of 180% to 260% is arranged on the horizontal upstream side of the screen former,
the net curtain forming device is formed by driving a conveying belt to rotate by a net curtain forming conveying roller, the upper surface of the conveying belt forms a net curtain forming surface, an exhaust fan is arranged in the net curtain forming device below the net curtain forming surface, a base cloth roll of spun-bonded non-woven fabric with the elongation of 180% -260% outputs base cloth to the net curtain forming surface, and the exhaust fan exhausts air for the net curtain forming surface so as to lay primary fiber filaments on the base cloth through air flow to form a net curtain; spun-bonded and pre-pressed by a pre-pressing roller to attach the as-spun fiber filaments to the base cloth, and the net curtain integrally enters the downstream;
a hot rolling mill is arranged at the downstream of the net curtain former, the net curtain on the net curtain forming surface is penetrated into the hot rolling mill,
an upper roller, a lower roller, an upper winding roller and a lower winding roller are arranged in the hot rolling mill, the net curtain penetrates into the space between the upper roller and the lower roller for hot rolling and then passes through the upper winding roller and the lower winding roller to pass out of the hot rolling mill,
a drying oven is arranged at the downstream of the hot rolling mill, a folding drying winding roller is arranged in the drying oven, and the net curtain is wound to the folding drying winding roller for drying and then enters a winding machine for winding;
the method comprises the following steps:
(1) the method comprises the following steps of (1) pumping a propylene polymer elastomer raw material with a melt index of 48-52 g/10min to a screw extruder with a temperature of 180-270 ℃ in a vacuum manner through a feeding system for extrusion and melting to obtain a hot melt;
(2) filtering the hot melt through a filtering system at the temperature of 230-250 ℃ and the pressure of 5-10MPa, filtering out impurities, accurately metering the impurities through a metering pump, distributing the impurities to a spinneret plate, wherein the spinneret plate is provided with spinneret orifices with the pore diameters of 0.4-0.8mm, and spraying the hot melt into filaments through the spinneret orifices;
(3) cooling the yarn by a side cold air cooling system, and allowing the cooled yarn to enter a drafting device through an upper horn mouth of the drafting device for drafting to obtain a fiber with the fineness of 1.8-2.2 denier;
(4) the spunbonded non-woven fabric with the elongation rate of 180% -260% is used as base cloth and passes through a net curtain former and subsequent equipment, the fibers are scattered on the base cloth in disorder, an exhaust fan is arranged at the lower part of the net curtain former, the exhaust fan is used for downwards sucking and sucking air, the base cloth and the fibers are fixed on the net curtain former, a net curtain is formed after prepressing of a prepressing roller, and the net curtain is transmitted to a hot rolling mill through the rotation of a transmission roller;
(5) the net curtain is subjected to hot rolling compaction under the pressing effect of an upper roller and a lower roller, so that the elastic layer is not separated from the base cloth to form non-woven cloth, the temperature of a hot rolling mill is 110-130 ℃, and the non-woven cloth is conveyed to an oven through an upper winding roller and a lower winding roller;
(6) drying the non-woven fabric through an oven at the temperature of 30-40 ℃;
(7) and winding the dried non-woven fabric through a winding machine.
Compared with the prior art, the invention has the following beneficial effects:
this production method of non-woven fabrics with one-way elasticity has abandoned the technology of traditional technology technique at double-deck spunbonded nonwoven intermediate nip fold elastic membrane, directly sprays on ordinary spunbonded nonwoven through the spunbonded nozzle after fusing elastomer material, rethread rolling mill pressfitting, simple process, convenient operation, compare with traditional elasticity non-woven fabrics, the practicality is higher, and the cost is lower.
The production method of the non-woven fabric with the unidirectional elasticity has the advantages of reasonable design, simple structure, safety, reliability, convenience in use, easiness in maintenance and good popularization and use values.
Drawings
FIG. 1 is a schematic process flow diagram of the present invention.
The reference numerals in the drawings denote:
1. a feeding system; 2. a screw extruder; 3. a filtration system; 4. a metering pump; 5. a spinneret plate; 6. a side cold air cooling system; 7. a drawing device; 8. a screen former; 9. spun-bonded nonwoven fabric; 10. an exhaust fan; 11. pre-pressing rollers; 12. a conveying roller; 13. a net curtain; 14. a hot rolling mill; 15. an upper roller; 16. a lower roller; 17. an upper winding roller; 18. a lower winding roller; 19. an oven; 20. folding to a drying winding roller; 21. and (7) a winding machine.
Detailed Description
The method for producing a non-woven fabric having unidirectional elasticity according to the present invention will be described in detail below with reference to the accompanying drawings.
As shown in the accompanying drawings, the method for producing the non-woven fabric with unidirectional elasticity of the invention comprises the following steps: carrying out melt extrusion on the propylene polymer elastomer in a screw extruder through a vacuum pumping system to obtain a hot melt; filtering, metering and dispensing the hot melt; spinning the hot melt which is distributed and metered, and cooling the spun filaments by cold air to obtain nascent filaments; drafting the as-grown filaments to obtain fibers with certain fineness; spreading the fibers on a base cloth of the spun-bonded non-woven fabric with the elongation of 180% -260% to form a net curtain together; carrying out hot rolling on the net curtain to obtain non-woven fabric; the non-woven fabric is dried by an oven and rolled by a winder to form the unidirectional elastic non-woven fabric.
The method specifically comprises the following steps:
(1) extruding and melting the elastomer raw material into a screw extruder through a vacuum material suction system to obtain a hot melt;
(2) filtering, metering and distributing the hot melt at high temperature and high pressure;
(3) spinning the hot melt which is distributed and metered, and cooling the spun filaments by side cold air to obtain nascent filaments;
(4) drafting the as-spun filaments in a drafting device to obtain fibers;
(5) taking the spun-bonded non-woven fabric with the elongation of 180-260% as a base fabric, and normally passing through a net forming curtain and subsequent equipment;
(6) spreading the fibers on the SSS spun-bonded non-woven base fabric in a split manner to form a net curtain;
(7) hot rolling the net curtain by a hot rolling mill to obtain non-woven fabric;
(8) drying the non-woven fabric through an oven;
(9) winding the dried non-woven fabric into a roll by a winding machine
The propylene polymer elastomer can be replaced by polypropylene elastomer or polypropylene-ethylene polymer; the melt index of the propylene polymer elastomer or the polypropylene elastomer is 48-52 g/10 min.
The extrusion melting temperature of the screw extruder is 180-270 ℃.
And filtering, metering and distributing the hot melt at 230-250 ℃ and under the pressure of 5-10 MPa.
And (3) spraying the filtered and metered hot melt out of the filaments through a pore diameter of 0.3-0.8 mm, and cooling the filaments by a cooling air box, wherein the temperature of the cooling air box is 10-20 ℃, and the cooling air speed is 0.2-1.5 m/s.
And (3) drafting the as-spun filaments in a drafting device to obtain fibers with the fineness of 1.8-2.2 denier.
Hot rolling the fiber by a hot rolling mill at the temperature of 110-130 ℃; the drying temperature of the oven is 30-40 ℃.
Preferably, the method for producing the non-woven fabric having unidirectional elasticity comprises the steps of:
(1) the method comprises the following steps of (1) pumping a propylene polymer elastomer raw material with a melt index of 48-52 g/10min to a screw extruder with a temperature of 180-270 ℃ in a vacuum manner through a feeding system for extrusion and melting to obtain a hot melt;
(2) filtering the hot melt through a filtering system at the temperature of 230-250 ℃ and the pressure of 5-10MPa, filtering out impurities, accurately metering the impurities through a metering pump, distributing the impurities to a spinneret plate, wherein the spinneret plate is provided with spinneret holes with the aperture of 0.4-0.8mm, and spraying the hot melt into filaments through the spinneret holes;
(3) cooling the yarn by a side cold air cooling system, and allowing the cooled yarn to enter a drafting device through an upper horn mouth of the drafting device for drafting to obtain a fiber with the fineness of 1.8-2.2 denier;
(4) normally passing a spun-bonded non-woven fabric with the elongation of 180% -260% as a base fabric through a net curtain former and subsequent equipment, spreading the fibers on the base fabric in disorder, arranging an exhaust fan at the lower part of the net curtain former, carrying out downward suction and air suction by the exhaust fan, fixing the base fabric and the fibers on the net curtain former, prepressing by a prepressing roller to form a net curtain, and transmitting the net curtain to a hot rolling mill by the rotation of a conveying roller;
(5) the net curtain is subjected to hot rolling compaction under the pressing effect of an upper roller and a lower roller, so that the elastic layer is not separated from the base cloth to form non-woven cloth, the temperature of a hot rolling mill is 110-130 ℃, and the non-woven cloth is conveyed to an oven through an upper winding roller and a lower winding roller;
(6) drying the non-woven fabric through an oven at the temperature of 30-40 ℃;
(7) and winding the dried non-woven fabric through a winding machine.
A production line of non-woven fabric with one-way elasticity comprises a feeding system, a screw extruder, a filtering system, a metering pump, a spinneret plate, a side cold air cooling system, a drafting device, a net curtain former, a hot rolling mill, an oven and a winding machine;
a screw extruder is arranged at the downstream of the feeding system, the feeding system is connected with the inlet end of the screw extruder, the outlet end of the screw extruder is connected with a filtering system, the downstream of the filtering system is connected with a metering pump, the downstream of the metering pump is connected with a spinneret plate, a side cold air cooling system is arranged below the spinneret plate, a drafting device is arranged below the side cold air cooling system, a net curtain forming device is arranged below the drafting device,
the metering pump, the spinneret plate, the side cold air cooling system and the drafting device are all arranged on the same vertical longitudinal axis;
a horizontally upstream of the web former is provided with a roll of spunbond nonwoven,
the net curtain forming device is formed by driving a conveying belt to rotate by a net curtain forming conveying roller, the upper surface of the conveying belt forms a net curtain forming surface, an exhaust fan is arranged in the net curtain forming device below the net curtain forming surface, the spun-bonded non-woven fabric roll outputs spun-bonded non-woven fabric to the net curtain forming surface, and the exhaust fan exhausts air for the net curtain forming surface so as to lay primary fiber filaments on the spun-bonded non-woven fabric through airflow to form a net curtain; the spun-bonded non-woven fabric is pre-pressed and attached with the spun-bonded fiber filament by a pre-pressing roller, and the net curtain integrally enters the downstream;
a hot rolling mill is arranged at the downstream of the net curtain former, the net curtain on the net curtain forming surface is penetrated into the hot rolling mill,
an upper roller, a lower roller, an upper winding roller and a lower winding roller are arranged in the hot rolling mill, the net curtain penetrates into the space between the upper roller and the lower roller for hot rolling and then passes through the upper winding roller and the lower winding roller to pass out of the hot rolling mill,
the downstream of the hot rolling mill is provided with a drying oven, a folding drying winding roller is arranged in the drying oven, and the net curtain is wound to the folding drying winding roller for drying and then enters a winding machine for winding.
The spun-bonded non-woven fabric used as the base fabric is formed by oriented or random fibers, is a new-generation environment-friendly material, and has the characteristics of moisture resistance, air permeability, flexibility, light weight, no combustion supporting, easy decomposition, no toxicity, no irritation, rich colors, low price, recycling and the like. If polypropylene (pp material) granules are mostly adopted as raw materials, the polypropylene composite material is produced by a continuous one-step method of high-temperature melting, spinning, lapping and hot-pressing coiling. It is called a cloth because of its appearance and certain properties. In the nonwoven fabric, S, SS, SMS, SMMS means as follows:
s: spun-bonded non-woven fabric = single layer fiber web hot-rolled;
and SS: spun-bonded non-woven fabric and spun-bonded non-woven fabric = two layers of fiber webs and is formed by hot rolling;
SMS: the spun-bonded non-woven fabric, the melt-blown non-woven fabric and the spun-bonded non-woven fabric are formed by hot rolling three layers of fiber webs;
SMMS: the spun-bonded non-woven fabric + the melt-blown non-woven fabric + the spun-bonded non-woven fabric = four layers of fiber webs and is formed by hot rolling.
The processing and manufacturing method of the non-woven fabric with the unidirectional elasticity on the production line comprises the following steps:
(1) the method comprises the following steps of (1) pumping a propylene polymer elastomer raw material with the melt index of (48-52) g/10min to a screw extruder 2 with the temperature of 180-270 ℃ in vacuum through a feeding system 1 for extrusion and melting to obtain a hot melt;
(2) filtering the hot melt through a filtering system 3 at the temperature of 230-;
(3) cooling the spun yarn by a side cold air cooling system 6, and allowing the cooled spun yarn to enter a drafting device 7 through an upper horn mouth of the drafting device 7 for drafting to obtain fiber with certain fineness;
(4) the spunbonded non-woven fabric 9 with the elongation percentage of 180% -260% is taken as base fabric and normally passes through a net curtain former 8 and subsequent equipment, the fibers are randomly paved on the base fabric, an exhaust fan 10 is arranged at the lower part of the net curtain former, the exhaust fan 10 performs downward suction, the base fabric and the fibers are fixed on the net curtain former 8 and are pre-pressed by a pre-pressing roller 11 to form a net curtain 13, and the net curtain 13 is transmitted to a hot rolling mill 14 through the rotation of a transmission roller 12;
(5) the net curtain 13 is hot-rolled and compacted under the pressing action of an upper roller 15 and a lower roller 16, so that the elastic layer is not separated from the base fabric to form non-woven fabric, the temperature of a hot rolling mill is 110-130 ℃, and the non-woven fabric is conveyed to an oven 19 through an upper winding roller 17 and a lower winding roller 18;
(6) drying the non-woven fabric in an oven 19 at the temperature of 30-40 ℃;
(7) and winding the dried non-woven fabric through a winding machine 21.
Claims (1)
1. A production method of non-woven fabric with one-way elasticity is characterized in that a production line of the method comprises a feeding system, a screw extruder, a filtering system, a metering pump, a spinneret plate, a side cold air cooling system, a drafting device, a net curtain forming device, a hot rolling machine, an oven and a winding machine;
a screw extruder is arranged at the downstream of the feeding system, the feeding system is connected with the inlet end of the screw extruder, the outlet end of the screw extruder is connected with a filtering system, the downstream of the filtering system is connected with a metering pump, the downstream of the metering pump is connected with a spinneret plate, a side cold air cooling system is arranged below the spinneret plate, a drafting device is arranged below the side cold air cooling system, a net curtain forming device is arranged below the drafting device,
the metering pump, the spinneret plate, the side cold air cooling system and the drafting device are all arranged on the same vertical longitudinal axis;
a base fabric roll of spun-bonded nonwoven fabric having an elongation of 180% to 260% is arranged on the horizontal upstream side of the screen former,
the net curtain forming device is formed by driving a conveying belt to rotate by a net curtain forming conveying roller, the upper surface of the conveying belt forms a net curtain forming surface, an exhaust fan is arranged in the net curtain forming device below the net curtain forming surface, a base cloth roll of spun-bonded non-woven fabric with the elongation of 180% -260% outputs base cloth to the net curtain forming surface, and the exhaust fan exhausts air for the net curtain forming surface so as to lay primary fiber filaments on the base cloth through air flow to form a net curtain; spun-bonded and pre-pressed by a pre-pressing roller to attach the as-spun fiber filaments to the base cloth, and the net curtain integrally enters the downstream;
a hot rolling mill is arranged at the downstream of the net curtain former, the net curtain on the net curtain forming surface is penetrated into the hot rolling mill,
an upper roller, a lower roller, an upper winding roller and a lower winding roller are arranged in the hot rolling mill, the net curtain penetrates into the space between the upper roller and the lower roller for hot rolling and then passes through the upper winding roller and the lower winding roller to pass out of the hot rolling mill,
a drying oven is arranged at the downstream of the hot rolling mill, a folding drying winding roller is arranged in the drying oven, and the net curtain is wound to the folding drying winding roller for drying and then enters a winding machine for winding;
the method comprises the following steps:
(1) the method comprises the following steps of (1) pumping a propylene polymer elastomer raw material with a melt index of 48-52 g/10min to a screw extruder with a temperature of 180-270 ℃ in a vacuum manner through a feeding system for extrusion and melting to obtain a hot melt;
(2) filtering the hot melt through a filtering system at the temperature of 230-250 ℃ and the pressure of 5-10MPa, filtering out impurities, accurately metering the impurities through a metering pump, distributing the impurities to a spinneret plate, wherein the spinneret plate is provided with spinneret orifices with the pore diameters of 0.4-0.8mm, and spraying the hot melt into filaments through the spinneret orifices;
(3) cooling the yarn by a side cold air cooling system, and allowing the cooled yarn to enter a drafting device through an upper horn mouth of the drafting device for drafting to obtain a fiber with the fineness of 1.8-2.2 denier;
(4) the spunbonded non-woven fabric with the elongation rate of 180% -260% is used as base cloth and passes through a net curtain former and subsequent equipment, the fibers are scattered on the base cloth in disorder, an exhaust fan is arranged at the lower part of the net curtain former, the exhaust fan is used for downwards sucking and sucking air, the base cloth and the fibers are fixed on the net curtain former, a net curtain is formed after prepressing of a prepressing roller, and the net curtain is transmitted to a hot rolling mill through the rotation of a transmission roller;
(5) the net curtain is subjected to hot rolling compaction under the pressing effect of an upper roller and a lower roller, so that the elastic layer is not separated from the base cloth to form non-woven cloth, the temperature of a hot rolling mill is 110-130 ℃, and the non-woven cloth is conveyed to an oven through an upper winding roller and a lower winding roller;
(6) drying the non-woven fabric through an oven at the temperature of 30-40 ℃;
(7) and winding the dried non-woven fabric through a winding machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710403938.1A CN107190417B (en) | 2017-06-01 | 2017-06-01 | Production method of non-woven fabric with unidirectional elasticity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710403938.1A CN107190417B (en) | 2017-06-01 | 2017-06-01 | Production method of non-woven fabric with unidirectional elasticity |
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| Publication Number | Publication Date |
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| CN107190417A CN107190417A (en) | 2017-09-22 |
| CN107190417B true CN107190417B (en) | 2020-04-21 |
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| CN107740226A (en) * | 2017-11-30 | 2018-02-27 | 山东恒鹏卫生用品有限公司 | A kind of elastic facial mask and its production technology |
| CN107740227A (en) * | 2017-11-30 | 2018-02-27 | 山东恒鹏卫生用品有限公司 | A kind of facial mask and its production technology |
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