CN114622344B - Dry preparation method of non-woven fabric and application of non-woven fabric in mask - Google Patents
Dry preparation method of non-woven fabric and application of non-woven fabric in mask Download PDFInfo
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- CN114622344B CN114622344B CN202111299963.2A CN202111299963A CN114622344B CN 114622344 B CN114622344 B CN 114622344B CN 202111299963 A CN202111299963 A CN 202111299963A CN 114622344 B CN114622344 B CN 114622344B
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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
- D04H1/44—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
- A61K8/0212—Face masks
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
- D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
- D01F8/14—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyester as constituent
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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
- D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
- D04H1/43825—Composite fibres
- D04H1/43828—Composite fibres sheath-core
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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
- D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
- D04H1/43825—Composite fibres
- D04H1/43832—Composite fibres side-by-side
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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
- D10B2401/06—Load-responsive characteristics
- D10B2401/061—Load-responsive characteristics elastic
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Epidemiology (AREA)
- Birds (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The invention relates to the field of non-woven fabric preparation, and discloses a dry preparation method of non-woven fabric and application thereof in a mask, which are used for solving the problems that the non-woven fabric prepared by a dry needling process prepared in the prior art is rough in texture and cannot replace a spun-laced non-woven fabric and a wet non-woven fabric which are high in preparation cost, and the method comprises the following steps: respectively drying the two different high polymer components, and then carrying out melting, spinning, winding, drafting and cutting to obtain composite fibers; opening, carding and lapping the composite fiber, pre-needling, then needling to form non-woven fabric, and finally heating the non-woven fabric with hot air, wherein the non-woven fabric can be used for manufacturing mask cloth. The non-woven fabric prepared by the invention has uniform and soft texture, and the composite elastic fiber forms a three-dimensional space in the non-woven fabric, so that the non-woven fabric has good air permeability and liquid adsorption capacity, the preparation cost is low, and the facial mask prepared by taking the non-woven fabric as the raw material has good skin adhesion and air permeability and strong essence bearing capacity.
Description
Technical Field
The invention relates to the field of non-woven fabric preparation, in particular to a dry preparation method of non-woven fabric and application of the non-woven fabric in a mask.
Background
The non-woven fabric is a fabric without warps and wefts, is formed by bonding fibers by mechanical, thermal bonding or chemical methods, and is widely applied to the fields of medical and health, clothing shoemaking, household decoration, automobile industry, agriculture and the like. The nonwoven fabric may be classified into a spunlaced nonwoven fabric, a heat-sealed nonwoven fabric, a pulp air-laid nonwoven fabric, a wet nonwoven fabric, a spun-bonded nonwoven fabric, a melt-blown nonwoven fabric, a needle-punched nonwoven fabric, etc., according to the production process.
The patch mask is a common personal beauty care product, and the skin feel of the mask cloth is a large standard for consumers to purchase the mask, so manufacturers tend to use the spunlaced non-woven fabric and the wet non-woven fabric with finer and softer hand feel to manufacture the mask cloth, but a large amount of water with better water quality is needed in the production process of the two processes, and the processing cost is higher. The cost of the needled non-woven fabric is lower, but the non-woven fabric prepared by the dry needling process has rough hand feeling and tiny pinholes on the surface due to the performance limitation of raw material fibers, and is not suitable for making a mask.
For example, a method for producing a high-permeability film nonwoven fabric disclosed in Chinese patent literature, publication No. CN103437065B, which uses cellulose fiber with a length of 5-25mm as a raw material, and is obtained by pre-hydroentangling a fiber web on a forming net by a high-pressure pre-hydroentangling head on a forming machine, then carrying out main hydroentanglement, reinforcement and entanglement, and drying and rolling. The water consumption of the mask non-woven fabric prepared by the water jet technology is high, the requirement on water quality is high, and the equipment is complex and the energy consumption is high, so that the preparation cost of the mask non-woven fabric is high.
Disclosure of Invention
The invention provides a dry preparation method of non-woven fabrics and application thereof in a mask, and aims to solve the problems that the non-woven fabrics prepared by a dry needling process in the prior art are rough in texture and cannot replace a spun-laced non-woven fabric and a wet non-woven fabric with high preparation cost.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a dry process for preparing a nonwoven fabric, the process comprising the steps of:
A. preparation of composite fibers: respectively drying the two different high polymer components, and then melting, spinning, winding, drafting and cutting;
B. dry needling: and D, opening, carding and lapping the composite fiber obtained in the step A, pre-needling, then main needling to form non-woven fabric, and finally heating the non-woven fabric by hot air.
When the shrinkage performance and elasticity of the fiber are poor, the non-woven fabric prepared by the dry needling process has a rough hand feeling, and the skin feel of the non-woven fabric serving as the mask fabric cannot be compared with that of the wet non-woven fabric. The invention improves the preparation process of the composite fiber and the preparation process of the non-woven fabric by dry needling, and uses two different polymer components to prepare the sheath-core type composite fiber or the parallel type composite fiber, and the two structures can greatly improve the shrinkage and the elasticity of the composite fiber; the high-shrinkage composite fiber is needled by a dry method to prepare the non-woven fabric, and the non-woven fabric is subjected to hot air heating treatment, so that the obtained non-woven fabric is soft, good in air permeability and high in liquid carrying rate, and the preparation cost of the non-woven fabric is greatly reduced compared with that of the spun-laced non-woven fabric or the wet non-woven fabric.
Preferably, in the step a, the polymer component is one or more of polyethylene terephthalate, polypropylene terephthalate and polybutylene terephthalate.
Preferably, in the step A, the mass ratio of the two high polymer components is (1-9): (9-1).
The selection and the mass ratio of the two different polymer components can influence the performance of the composite fiber, and when the mass ratio of the two different polymer components is (4-6): (4-6) the effect is optimal.
Preferably, in the step A, the melting temperature of the polymer component is 220-300 ℃, the spinning speed is 700-1500m/min, the spinning cooling mode is annular blowing, the blowing temperature is 10-25 ℃, and the annular blowing wind speed is 0.2-10m/min.
The choice of melting temperature is dependent on the physical properties of the selected polymer component. When the high polymer component is polytrimethylene terephthalate (PTT) and polybutylene terephthalate (PBT), the melting temperature is 220-260 ℃; when the high polymer component is polyethylene terephthalate (PET), the melting temperature is 260-300 ℃; when the high polymer component is PTT, the melting temperature is 220-260 ℃; when the high polymer component is PBT, the melting temperature is 220-260 ℃.
Preferably, in the step A, the drafting speed is 100-300m/min, the drafting temperature is 70-95 ℃, the drafting multiplying power is 1.0-4.0, and the shaping temperature is 100-180 ℃.
Preferably, in the step a, the composite fiber obtained in the step a is a sheath-core composite fiber or a side-by-side composite fiber, and the fineness of the composite fiber is 0.5-3.0d, and the length of the composite fiber is 25-80mm.
The sheath-core type composite fiber and the parallel type composite fiber can play the advantages of different component materials, wherein the sheath-core type composite fiber has better rebound resilience and good hand feeling; the side-by-side type composite fiber can utilize different shrinkage properties of two polymer materials to improve the shrinkage rate and elasticity of the fiber, and the shrinkage rate and elasticity of the solid side-by-side type composite fiber and the hollow side-by-side type composite fiber in the side-by-side type composite fiber are better.
Preferably, in the step B, the pre-needling frequency is 300-400 times/min, the main needling frequency is 500-700 times/min, and the discharging speed is 0.5-0.8m/min.
Preferably, in the step B, the non-woven fabric with the gram weight of 30-80g/m is obtained by needling 2 。
Preferably, in the step B, the heating temperature is 160-180 ℃ and the heating time is 100-150s.
After the composite fiber is needled into the non-woven fabric, the size of the three-dimensional space in the non-woven fabric can be increased by hot air heating treatment, so that the non-woven fabric with high contractility is formed.
An application of non-woven fabric in facial mask is provided.
The mask cloth made of the non-woven fabric prepared by the invention has soft texture, good air permeability and high liquid carrying rate.
Therefore, the invention has the following beneficial effects: (1) The prepared non-woven fabric has good elasticity and contractility, uniform and soft texture, and the composite elastic fiber forms a three-dimensional space in the non-woven fabric, so that the non-woven fabric has good air permeability and liquid adsorption capacity; (2) The dry needling process is used in the preparation process, so that the water consumption is reduced, the environment is protected, and the preparation cost is greatly reduced; (3) The facial mask manufactured by taking the non-woven fabric as the raw material has good skin adhesion and air permeability and strong essence bearing capacity.
Drawings
FIG. 1 is a cross-sectional view of the composite fiber in example 1.
Detailed Description
The invention is further described with reference to the drawings and the detailed description.
Example 1
A. Drying a semi-light PTT slice at 120 ℃ for 6 hours, then adding a No. 1 single screw extruder to obtain a PTT melt, drying a bright PBT slice at 140 ℃ for 8 hours, then adding a No. 2 single screw extruder to obtain a PBT melt, wherein the parameters of the No. 1 single screw extruder are set to be 1 zone 250 ℃,2 zone 255 ℃, 3 zone 260 ℃, 4 zone 265 ℃, spinning box 260 ℃, and the parameters of the No. 2 single screw extruder are set to be 1 zone 280 ℃,2 zone 285 ℃, 3 zone 290 ℃, 4 zone 290 ℃, 5 zone 290 ℃ and spinning box 285 ℃;
B. extruding PTT melt and PBT melt with the mass ratio of 1:1 by a solid parallel spinneret plate at the pressure of 4.5MPa to obtain solid parallel composite fibers, and cooling the extruded fibers at the annular blowing temperature of 15 ℃ at the annular blowing wind speed of 8m/min;
C. feeding the composite fiber into a winding machine for winding, wherein the speed of five rollers is set to 960m/min, and the speed of a feeding wheel is set to 1040m/min;
D. drawing the coiled composite fiber to 1.2d at 90 ℃, shaping in an oven after crimping, wherein the temperature of the oven is set to be 130 ℃ in a first area, 140 ℃ in a second area and 130 ℃ in a third area, and cutting the length of the composite fiber to 38mm after shaping;
E. opening, carding and lapping the drafted composite fiber, pre-needling, and then main needling to obtain non-woven fabric, wherein the gram weight of the non-woven fabric is 45g/m 2 Delivering the needled non-woven fabric into a subsequent baking oven, and drying at 180deg.C for 120s to obtain elastic facial mask non-woven fabric with gram weight of 70g/m 2 ，
Wherein the parameters of the carding machine are set as follows: the feed speed was 0.69m/min, cylinder speed 679rpm, doffer speed 25.17rpm, the parameters of the lapping were set as follows: the parameters of the pre-needling machine are set as follows, wherein the inclined curtain speed is 16.65m/min, the ring curtain speed is 13.16m/min, the reciprocating speed is 19.53m/min, the bottom curtain speed is 0.5 m/min: the feeding speed is 0.5m/min, the needling frequency is 350 times/min, the discharging speed is 0.6m/min, and the parameters of the main needling machine are set as follows: the needling frequency is 600 times/min, and the discharging speed is 0.6m/min;
F. cutting the elastic facial mask non-woven fabric into a facial mask.
The cross section of the composite fiber obtained in the example 1 is shown in fig. 1, the composite fiber is solid and parallel, the two components are distributed back to back, and the uniformity of the fiber diameter is good.
Example 2
A. Drying a semi-gloss PTT slice at 120 ℃ for 6 hours, then adding a No. 1 single screw extruder to obtain a PTT melt, drying the semi-gloss PET slice at 120 ℃ for 6 hours, then adding a No. 2 single screw extruder to obtain a PET melt, wherein parameters of the No. 1 single screw extruder are set to be 1 zone 250 ℃,2 zone 255 ℃, 3 zone 260 ℃, 4 zone 265 ℃, spinning manifold 260 ℃, and parameters of the No. 2 single screw extruder are set to be 1 zone 250 ℃,2 zone 255 ℃, 3 zone 260 ℃, 4 zone 265 ℃, 5 zone 265 ℃ spinning manifold 265 ℃;
B. extruding PTT melt and PET melt with the mass ratio of 1:1 by a solid parallel spinneret plate at the pressure of 4.5MPa to obtain solid parallel composite fibers, and cooling the extruded fibers at the annular blowing temperature of 15 ℃ at the annular blowing wind speed of 5m/min;
C. feeding the composite fiber into a winding machine for winding, wherein the speed of five rollers is set to 960m/min, and the speed of a feeding wheel is set to 1040m/min;
D. drawing the coiled composite fiber to 1.2d at 90 ℃, shaping in an oven after crimping, wherein the temperature of the oven is set to be 80 ℃ in a first area, 80 ℃ in a second area and 80 ℃ in a third area, and cutting the length of the composite fiber to 38mm after shaping;
E. opening, carding and lapping the drafted composite fiber, pre-needling, and then main needling to obtain non-woven fabric, wherein the gram weight of the non-woven fabric is 55g/m 2 Delivering the needled non-woven fabric into a subsequent baking oven, and drying at 180deg.C for 120s to obtain elastic facial mask non-woven fabric with gram weight of 75g/m 2 ，
Wherein the parameters of the carding machine are set as follows: the feed speed was 0.69m/min, cylinder speed 679rpm, doffer speed 25.17rpm, the parameters of the lapping were set as follows: the parameters of the pre-needling machine are set as follows, wherein the inclined curtain speed is 16.65m/min, the ring curtain speed is 13.16m/min, the reciprocating speed is 19.53m/min, the bottom curtain speed is 0.5 m/min: the feeding speed is 0.5m/min, the needling frequency is 350 times/min, the discharging speed is 0.6m/min, and the parameters of the main needling machine are set as follows: the needling frequency is 600 times/min, and the discharging speed is 0.6m/min;
F. cutting the elastic facial mask non-woven fabric into a facial mask.
Example 3
A. Drying a bright light PBT slice at 120 ℃ for 6 hours, then adding a No. 1 single screw extruder to obtain a PBT melt, drying a semi-bright PET slice at 140 ℃ for 8 hours, then adding a No. 2 single screw extruder to obtain a PET melt, setting parameters of the No. 1 single screw extruder as a 1 region 265 ℃, a 2 region 270 ℃, a 3 region 275 ℃, a 4 region 280 ℃, a spinning manifold 280 ℃, setting parameters of the No. 2 single screw extruder as a 1 region 250 ℃, a 2 region 255 ℃, a 3 region 260 ℃, a 4 region 265 ℃, a 5 region 270 ℃ and a spinning manifold 265 ℃;
B. extruding the PBT melt and the PET melt with the mass ratio of 1:1 from a solid parallel spinneret plate at the pressure of 4.5MPa to prepare solid parallel composite fibers, and cooling the extruded fibers at the annular blowing temperature of 20 ℃ at the annular blowing speed of 10m/min;
C. feeding the composite fiber into a winding machine for winding, wherein the speed of five rollers is set to 960m/min, and the speed of a feeding wheel is set to 1040m/min;
D. drawing the coiled composite fiber to 1.2d at 90 ℃, shaping in an oven after crimping, wherein the temperature of the oven is set to be 130 ℃ in a first area, 140 ℃ in a second area and 130 ℃ in a third area, and cutting the length of the composite fiber to 38mm after shaping;
E. opening, carding and lapping the drafted composite fiber, pre-needling, and then main needling to obtain non-woven fabric, wherein the gram weight of the non-woven fabric is 55g/m 2 Delivering the needled non-woven fabric into a subsequent baking oven, and drying at 180deg.C for 120s to obtain elastic facial mask non-woven fabric with gram weight of 70g/m 2 ，
Wherein the parameters of the carding machine are set as follows: the feed speed was 0.69m/min, cylinder speed 679rpm, doffer speed 25.17rpm, the parameters of the lapping were set as follows: the parameters of the pre-needling machine are set as follows, wherein the inclined curtain speed is 16.65m/min, the ring curtain speed is 13.16m/min, the reciprocating speed is 19.53m/min, the bottom curtain speed is 0.5 m/min: the feeding speed is 0.5m/min, the needling frequency is 350 times/min, the discharging speed is 0.6m/min, and the parameters of the main needling machine are set as follows: the needling frequency is 600 times/min, and the discharging speed is 0.6m/min;
F. cutting the elastic facial mask non-woven fabric into a facial mask.
Example 4
A. Drying a semi-light PTT slice at 120 ℃ for 6 hours, then adding a No. 1 single screw extruder to obtain a PTT melt, drying a bright PBT slice at 140 ℃ for 8 hours, then adding a No. 2 single screw extruder to obtain a PBT melt, wherein the parameters of the No. 1 single screw extruder are set to be 1 zone 250 ℃,2 zone 255 ℃, 3 zone 260 ℃, 4 zone 265 ℃, spinning box 260 ℃, and the parameters of the No. 2 single screw extruder are set to be 1 zone 280 ℃,2 zone 285 ℃, 3 zone 290 ℃, 4 zone 290 ℃, 5 zone 290 ℃ and spinning box 285 ℃;
B. extruding PTT melt and PBT melt with the mass ratio of 1:1 by a hollow parallel spinneret plate at the pressure of 4.5MPa to prepare hollow parallel composite fibers, and cooling the extruded fibers at the annular blowing temperature of 15 ℃ at the annular blowing wind speed of 8m/min;
C. feeding the composite fiber into a winding machine for winding, wherein the speed of five rollers is set to 960m/min, and the speed of a feeding wheel is set to 1040m/min;
D. drawing the coiled composite fiber to 1.2d at 90 ℃, shaping in an oven after crimping, wherein the temperature of the oven is set to be 130 ℃ in a first area, 140 ℃ in a second area and 130 ℃ in a third area, and cutting the length of the composite fiber to 38mm after shaping;
E. opening, carding and lapping the drafted composite fiber, pre-needling, and then main needling to obtain non-woven fabric, wherein the gram weight of the non-woven fabric is 35g/m 2 Delivering the needled non-woven fabric into a subsequent baking oven, and drying at 180deg.C for 120s to obtain elastic facial mask non-woven fabric with gram weight of 70g/m 2 ，
Wherein the parameters of the carding machine are set as follows: the feed speed was 0.69m/min, cylinder speed 679rpm, doffer speed 25.17rpm, the parameters of the lapping were set as follows: the parameters of the pre-needling machine are set as follows, wherein the inclined curtain speed is 16.65m/min, the ring curtain speed is 13.16m/min, the reciprocating speed is 19.53m/min, the bottom curtain speed is 0.5 m/min: the feeding speed is 0.5m/min, the needling frequency is 350 times/min, the discharging speed is 0.6m/min, and the parameters of the main needling machine are set as follows: the needling frequency is 600 times/min, and the discharging speed is 0.6m/min;
F. cutting the elastic facial mask non-woven fabric into a facial mask.
Comparative example 1
A. Drying a semi-light PTT slice at 120 ℃ for 6 hours, drying a bright PBT slice at 120 ℃ for 6 hours, mixing the semi-light PTT slice and the bright PBT slice at a mass ratio of 1:1, and then adding a No. 1 single screw extruder and a No. 2 single screw extruder, wherein parameters of the No. 1 single screw extruder are set to be 1 zone 280 ℃,2 zone 285 ℃, 3 zone 290 ℃, 4 zone 290 ℃, spinning box 285 ℃, and parameters of the No. 2 single screw extruder are set to be 1 zone 280 ℃,2 zone 285 ℃, 3 zone 290 ℃, 4 zone 290 ℃, 5 zone 290 ℃, spinning box 285 ℃;
B. extruding the PTT and PBT mixed melt at a pressure of 4.5MPa by a solid spinneret plate to obtain solid fibers, and cooling the extruded fibers at a circular blowing temperature of 15 ℃ at a circular blowing wind speed of 8m/min;
C. feeding the composite fiber into a winding machine for winding, wherein the five-roller speed is set to 900m/min, and the feeding wheel speed is set to 930m/min;
D. drawing the coiled composite fiber to 1.0-1.5d at 90 ℃, shaping in an oven after crimping, setting the temperature of the oven to be 130 ℃ in a first area, 140 ℃ in a second area and 130 ℃ in a third area, and cutting the length of the composite fiber to 38mm after shaping;
E. opening, carding and lapping the drafted composite fiber, pre-needling, and then main needling to obtain non-woven fabric, wherein the gram weight of the non-woven fabric is 60g/m 2 Delivering the needled non-woven fabric into a subsequent baking oven, and drying at 180deg.C for 120s to obtain elastic facial mask non-woven fabric with gram weight of 65g/m 2 s，
Wherein the parameters of the carding machine are set as follows: the feed speed was 0.69m/min, cylinder speed 679rpm, doffer speed 25.17rpm, the parameters of the lapping were set as follows: the parameters of the pre-needling machine are set as follows, wherein the inclined curtain speed is 16.65m/min, the ring curtain speed is 13.16m/min, the reciprocating speed is 19.53m/min, the bottom curtain speed is 0.5 m/min: the feeding speed is 0.5m/min, the needling frequency is 350 times/min, the discharging speed is 0.6m/min, and the parameters of the main needling machine are set as follows: the needling frequency is 600 times/min, and the discharging speed is 0.6m/min;
F. cutting the elastic facial mask non-woven fabric into a facial mask.
Comparative example 2
A. Drying a semi-gloss PTT slice at 120 ℃ for 6 hours, drying a semi-gloss PET slice at 140 ℃ for 8 hours, mixing the semi-gloss PTT slice and the semi-gloss PET slice at a mass ratio of 1:1, and then adding the mixture into a No. 1 single screw extruder and a No. 2 single screw extruder, wherein parameters of the No. 1 single screw extruder are set to be 1 zone 250 ℃,2 zone 255 ℃, 3 zone 260 ℃, 4 zone 265 ℃ and spinning manifold 265 ℃, and parameters of the No. 2 single screw extruder are set to be 1 zone 250 ℃,2 zone 255 ℃, 3 zone 260 ℃, 4 zone 265 ℃, 5 zone 265 ℃ and spinning manifold 265 ℃;
B. extruding PTT and PET mixed melt obtained by a No. 1 single screw extruder and PTT and PET mixed melt obtained by a No. 2 single screw extruder in a mass ratio of 1:1 by a spinneret plate with 2200 holes at a pressure of 4.5MPa to obtain solid fibers, and cooling the extruded fibers at a blowing temperature of 10-25 ℃ at a blowing wind speed of 0.2-10m/min;
C. feeding the composite fiber into a winding machine for winding, wherein the five-roller speed is set to 900m/min, and the feeding wheel speed is set to 930m/min;
D. drawing the coiled composite fiber to 1.2d at 90 ℃, shaping in an oven after crimping, wherein the temperature of the oven is set to be 130 ℃ in a first area, 140 ℃ in a second area and 130 ℃ in a third area, and cutting the length of the composite fiber to 38mm after shaping;
E. opening, carding and lapping the drafted composite fiber, pre-needling, and then main needling to obtain non-woven fabric, wherein the gram weight of the non-woven fabric is 60g/m 2 Delivering the needled non-woven fabric into a subsequent baking oven, and drying at 180deg.C for 120s to obtain elastic facial mask non-woven fabric with gram weight of 65g/m 2 ，
Wherein the parameters of the carding machine are set as follows: the feed speed was 0.69m/min, cylinder speed 679rpm, doffer speed 25.17rpm, the parameters of the lapping were set as follows: the parameters of the pre-needling machine are set as follows, wherein the inclined curtain speed is 16.65m/min, the ring curtain speed is 13.16m/min, the reciprocating speed is 19.53m/min, the bottom curtain speed is 0.5 m/min: the feeding speed is 0.5m/min, the needling frequency is 350 times/min, the discharging speed is 0.6m/min, and the parameters of the main needling machine are set as follows: the needling frequency is 600 times/min, and the discharging speed is 0.6m/min;
F. cutting the elastic facial mask non-woven fabric into a facial mask.
Comparative example 3
A. The composite fiber was prepared in the same manner as in example 1;
B. opening, carding and lapping the drafted composite fiber, pre-needling, and then main needling to obtain non-woven fabric, wherein the gram weight of the non-woven fabric is 45g/m 2 ，
Wherein the parameters of the carding machine are set as follows: the feed speed was 0.69m/min, cylinder speed 679rpm, doffer speed 25.17rpm, the parameters of the lapping were set as follows: the parameters of the pre-needling machine are set as follows, wherein the inclined curtain speed is 16.65m/min, the ring curtain speed is 13.16m/min, the reciprocating speed is 19.53m/min, the bottom curtain speed is 0.5 m/min: the feeding speed is 0.5m/min, the needling frequency is 350 times/min, the discharging speed is 0.6m/min, and the parameters of the main needling machine are set as follows: the needling frequency is 600 times/min, and the discharging speed is 0.6m/min;
F. cutting non-woven fabric into facial mask.
Comparative example 4
A. The composite fiber was prepared in the same manner as in example 1;
B. b, opening, carding and lapping the composite fiber obtained in the step A, then carrying out hydroentanglement to consolidate the composite fiber into a non-woven fabric, and sending the non-woven fabric obtained by the hydroentanglement into a subsequent baking oven, wherein the gram weight of the non-woven fabric is 55g/m 2 Delivering the needled non-woven fabric into a subsequent baking oven, and drying at 180deg.C for 120s to obtain elastic facial mask non-woven fabric with gram weight of 70g/m 2 ，
Wherein the parameters of the carding machine are set as follows: the feed speed was 0.69m/min, cylinder speed 679rpm, doffer speed 25.17rpm, the parameters of the lapping were set as follows: the inclined curtain speed is 16.65m/min, the ring curtain speed is 13.16m/min, the reciprocating speed is 19.53m/min, the bottom curtain speed is 0.5m/min,
parameters of the hydroentangling machine are set as follows: the needling frequency is 600 times/min, and the discharging speed is 0.6m/min;
C. cutting non-woven fabric into facial mask.
The composite fibers prepared in examples 1 to 4 and comparative examples 1 to 4 were examined by GB/T14344-2008 method for testing tensile Property of chemical fiber filaments, GB T14344-2008 method for testing tensile Property of chemical fiber filaments, and GB/T6505-2017 method for testing thermal shrinkage of chemical fiber filaments (after treatment).
The performance indexes are shown in table 1:
TABLE 1 Performance index of composite fibers
As can be seen from the data in Table 1, examples 1 to 5 were better in tensile properties, crimping properties and heat shrinkage than comparative examples 1 to 4, indicating that the process for producing a composite fiber according to the present invention can improve the heat shrinkage properties of the composite fiber.
The same polymer materials were used in example 1 and comparative example 1, but the composite fiber structure was different, and example 1 was a solid side-by-side type composite fiber, and comparative example 1 was a blended solid type fiber, and as apparent from table 1, the heat shrinkage performance of example 1 was superior to that of comparative example 1, and the data comparison of example 2 and comparative example 2 also showed the same tendency, indicating that the heat shrinkage performance of the solid side-by-side type composite fiber was superior to that of the blended solid type fiber. Because the physical properties of different polymer components are different, the solid parallel composite fiber can utilize the different shrinkage properties of two polymers, automatically shrink to one side of the polymer component with higher shrinkage rate after extrusion cooling, and realize fiber elasticity characterization, so that the elasticity and shrinkage properties of the composite fiber can be improved by the solid parallel structure, and the elastic effect is better. In example 1, the effect of the cross-sectional structure of the fiber on shrinkage was compared with that of example 4, and the results showed that the solid side-by-side type composite fiber had a higher dry heat shrinkage than the hollow side-by-side type composite fiber because the solid side-by-side type composite fiber had a larger contact area between the polymer materials of the two components, and therefore had a larger dry heat shrinkage.
The mask cloths prepared in examples 1 to 4 and comparative examples 1 to 4 were subjected to air permeability, tensile strength test and liquid carrying rate, and the detection methods thereof were the detection methods mentioned in GB/T5453-1997 "determination of air permeability of textile fabrics", GB/T24218.3-2010 "test method for textile nonwoven fabrics" and GB/T24218.3-2010 "test method for textile nonwoven fabrics".
The test results are shown in Table 2:
TABLE 2 Performance index of mask cloth made of nonwoven fabrics
The performance of the mask cloth obtained by dry needling in example 1 was similar to that of the mask cloth obtained by hydroentangling in comparative example 4, which shows that the dry-prepared nonwoven fabric of the present invention can be used as a raw material of the mask cloth instead of the wet-prepared nonwoven fabric.
Comparing the data in tables 1 and 2, it is apparent that when the shrinkage performance of the composite fiber is poor, the air permeability, softness, stretching degree and liquid carrying rate of the prepared nonwoven fabric are poor, because after the side-by-side composite fiber is shrunk, the fiber is changed from original two-dimensional curl to three-dimensional curl, and the three-dimensional curl fiber forms a wind-hole structure, so that the liquid carrying rate is increased.
In comparative example 3, the nonwoven fabric was not heated by hot air in a subsequent oven after needling, resulting in the same composite fiber obtained in comparative example 3 as in example 1, but the performance of the finally prepared mask cloth was inferior to that of example 1, which suggests that hot air heating can improve the shrinkage of the needled nonwoven fabric, thereby improving the air permeability and the liquid carrying rate of the nonwoven fabric.
Claims (9)
1. The dry method preparation method of the non-woven fabric for the mask is characterized by comprising the following steps:
A. preparation of composite fibers: respectively drying the two different high polymer components, and then melting, spinning, winding, drafting and cutting;
B. dry needling: b, opening, carding and lapping the composite fiber obtained in the step A, pre-needling, then main needling to form non-woven fabric, and finally heating the non-woven fabric by hot air;
the composite fiber obtained in the step A is sheath-core type composite fiber or parallel type composite fiber, the fineness is 0.5-3.0d, and the length is 25-80mm.
2. The method according to claim 1, wherein in the step a, the polymer component is one or more of polyethylene terephthalate, polypropylene terephthalate and polybutylene terephthalate.
3. The dry method for preparing a non-woven fabric for a mask according to claim 1, wherein in the step a, the mass ratio of the two high polymer components is (1-9): (9-1).
4. The dry method for preparing a non-woven fabric for a mask according to claim 1, wherein in the step a, the melting temperature of the polymer component is 220-300 ℃, the spinning speed is 700-1500m/min, the spinning cooling mode is annular blowing, the blowing temperature is 10-25 ℃, and the annular blowing wind speed is 0.2-10m/min.
5. The method according to claim 1, wherein in the step a, the drawing speed is 100-300m/min, the drawing temperature is 70-95 ℃, the drawing ratio is 1.0-4.0, and the setting temperature is 100-180 ℃.
6. The dry method for preparing a non-woven fabric for a mask according to claim 1, wherein in the step B, the pre-needling frequency is 300-400 times/min, the main needling frequency is 500-700 times/min, and the discharging speed is 0.5-0.8m/min.
7. The method for preparing a non-woven fabric for a mask according to claim 1, wherein in the step B, the non-woven fabric is obtained by needling, and the gram weight of the non-woven fabric is 30-80g/m 2 。
8. The method according to claim 1, wherein in the step B, the heating temperature is 160-180 ℃ and the heating time is 100-150s.
9. Use of the nonwoven fabric prepared according to any one of claims 1 to 8 in a mask.
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