CN111139596B - Spunlace nonwoven fabric - Google Patents
Spunlace nonwoven fabric Download PDFInfo
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- CN111139596B CN111139596B CN201811299670.2A CN201811299670A CN111139596B CN 111139596 B CN111139596 B CN 111139596B CN 201811299670 A CN201811299670 A CN 201811299670A CN 111139596 B CN111139596 B CN 111139596B
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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
- D04H1/492—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 by fluid jet
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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
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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
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- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The invention discloses a spunlace non-woven fabric, which contains superfine fibers with the fiber number of 0.3-0.9 dtex, and the surfaces of the superfine fibers are in etched stripe structures. The spunlace non-woven fabric has the characteristics of good softness, high liquid retention rate and good fit with skin.
Description
Technical Field
The invention relates to a spunlace non-woven fabric.
Background
In recent years, spunlace nonwoven fabric products are more and more accepted by consumers in the fields of medical treatment and health, garment interlining and the like due to the characteristics of soft hand feeling, air permeability, moisture absorption and the like. Wherein, the dry spunlace nonwoven fabric occupies most of the Jiangshan of the spunlace market due to high processing efficiency, almost no pollution of the process flow and excellent product style. However, the conventional roller carding system is generally adopted in the dry spunlace process, so that not only certain restriction is imposed on the web forming processability of the fibers, but also certain requirements are imposed on the specification and material of the fibers.
For the conventional spunlace nonwoven fabric product, the fiber diameter of the product is larger, and the fiber has no special structure, so that the softness, water absorption and adhesion of the conventional spunlace nonwoven fabric are common. With the increasing demands of consumers on product performance, the conventional spunlace product is not favored by consumers.
However, the higher the surface tension of the fine fiber, the lower the bending stiffness, and the better the water retentivity and hand of the obtained product, but the method of processing the dry nonwoven fabric is restrictive, and the fiber fineness cannot be decreased indefinitely. At present, the main superfine fiber spunlace products in the market are mainly prepared by the modes of spunlace division and fiber opening or sea-island sea removal and the like, but the processing procedures and conditions are increased, so that the cost of the product is increased, meanwhile, certain bottlenecks exist in the diameters of the divided fibers, and if the diameters of the divided fibers are smaller, the fibers cannot be completely opened, so that the superfine fibers are difficult to become the superfine fibers in the true sense, and the performance of the product is difficult to obviously improve. In addition, in the case of the ultrafine fiber product made of sea-island fibers, although the diameter of the fiber becomes ultrafine after sea removal, the fiber is in the form of a bundle, and the hand and water absorption of the product are also affected by the ultrafine fibers bundled in one bundle.
For example, chinese patent publication No. CN103211714A discloses a nonwoven fabric obtained by mixing and spunlacing a splittable conjugate fiber with a hydrophilic fiber, wherein the split fiber has a small diameter, and the obtained nonwoven fabric has good softness and water retention, but the conjugate fiber is partially split, and in the process of producing the nonwoven fabric, the fiber may not be completely split, so that the fiber cannot become an independent ultrafine fiber, and if the effect of complete splitting cannot be achieved, the fiber is still in a regular fineness state, and the softness of the product tends to be reduced. However, the superfine fiber processed by the composite fiber dividing method has the fiber diameter of micron level even if being completely divided, and the product has larger micropores and more general water locking performance.
Disclosure of Invention
The invention aims to provide a spunlace nonwoven fabric product with excellent softness and high liquid retention rate.
The technical solution of the invention is as follows: the spunlace non-woven fabric contains superfine fibers with the fineness of 0.3-0.9 dtex, and the surfaces of the superfine fibers are in etched stripe structures. The surface of the superfine fiber is preferably in a longitudinal etching-shaped stripe structure.
The width of the longitudinal etching-shaped stripe is preferably 5-2000 nm.
The diameter of the ultrafine fibers is preferably 5.0 to 10.0 μm.
The birefringence of the ultrafine fiber is preferably 0 to 0.06.
The density of the superfine fiber is preferably 1.0-1.4 g/cm 3 。
The crimp number of the superfine fiber is preferably 10-20 mountains/25 mm.
The content of the ultrafine fibers in the nonwoven fabric is preferably 20 to 100% by weight.
The nonwoven fabric preferably has a stiffness/softness of 0.02 to 0.2mN.
The liquid retention rate of the nonwoven fabric is preferably 700 to 1500%.
The invention has the beneficial effects that: compared with the existing spunlace non-woven fabric prepared from common fibers, the spunlace non-woven fabric prepared by the method disclosed by the invention contains superfine fibers with micro water-locking stripes on the surfaces, and has the characteristics of good softness, high liquid retention rate and good skin-to-skin fit.
Drawings
FIG. 1 is a SEM scan of a cross-section of a hydroentangled nonwoven fabric comprising the present invention.
Detailed Description
The technical solution of the invention is as follows: the spunlace nonwoven fabric contains superfine fibers with the fineness of 0.3-0.9 dtex, and the surfaces of the superfine fibers are in etched stripe structures. The spunlace non-woven fabric is formed by carrying out spunlace processing on superfine fibers with the fineness of 0.3-0.9 dtex or on the mixture of the superfine fibers with the fineness of 0.3-0.9 dtex and other common fibers, and the surfaces of the superfine fibers are in etched stripe structures. Because the fiber diameter of the superfine fiber is thin, the processed spunlace non-woven fabric is soft in hand feeling, is applied to the field of skin care, and has excellent skin-friendly and moisture-keeping properties, but the dry spunlace processing technology is adopted, the specification of the used fiber needs to be controlled within a certain range, if the fineness of the superfine fiber is lower than 0.3dtex, for a conventional roller type carding device, the fiber is difficult to be fully grabbed and carded by a card clothing, the fiber has no mass production property, and the problem of doubling can easily occur even if the production speed is reduced for production, so that the surface appearance quality of the obtained non-woven fabric is reduced, small fiber bundles can appear on the surface of the product, and when the spunlace non-woven fabric is applied to cosmetic products such as a mask, the performances of pasting, water retention and the like at the doubling position can also be greatly reduced, and the usability is reduced; if the fineness of the superfine fiber is higher than 0.9dtex, the fiber fineness is close to the fiber with the common specification, and the processed product is difficult to have the characteristics of the superfine fiber, and when the fiber fineness is larger, the rigidity and softness of the obtained non-woven fabric are increased and the water retention is reduced due to the thicker fiber diameter of the formed product, so that the hand feeling of the product is hardened, the water retention capacity is poor, and the product cannot keep the excellent characteristics of the hand feeling and the water retention. The fineness of the ultrafine fiber of the present invention is preferably 0.5 to 0.7dtex in consideration of the water retentivity and flexibility of the spunlace nonwoven fabric.
The surface of the superfine fiber is in an etched stripe structure, and the etched structure means that the surface of the fiber is provided with grooves similar to wrinkles, like countless scratches on the surface of the fiber. The etched stripes are equivalent to tiny holes on the surface of the fiber, and the tiny holes can firmly adsorb tiny droplets, so that the water retention of the spunlace non-woven fabric can be improved. In order to enable the surface of the superfine fiber to have an etching-shaped stripe structure, the spinning method of the fiber is preferably a wet spinning process, and the generation of the etching-shaped stripe is controlled by different curing time of the inner side and the outer side of the fiber during spinning. When the fiber is processed by a dry method or a melt method, although a fiber structure with stripes on the surface can be prepared by modifying a spinning plate component and adjusting the shape of spinning holes, the width of the stripes is increased due to the phenomenon of the parasitic swelling of polymers, and compared with the fiber prepared by the wet spinning method, the water retention and water locking capacity of the obtained non-woven fabric is more general by adopting the fiber prepared by the dry method or the melt method.
The surface of the superfine fiber is preferably in a longitudinal etching-shaped stripe structure. Because the fiber is of a thin and long structure, the longitudinal etched stripes can be more closely arranged on the surface of the fiber compared with the transverse stripe arrangement structure, so that the number of the stripes is maximized. The stripes are equivalent to tiny pores on the surface of the fiber, and the tiny pores can firmly adsorb tiny droplets, so that the water retention of the spunlace non-woven fabric can be improved. If the etched stripe structure appears in the cross section direction of the fiber, the number and volume of micropores on the surface of the fiber are reduced, and the transverse etched stripe structure may reduce the strength of the fiber, so that the strength of the obtained spunlace nonwoven fabric is reduced.
The superfine fibers constituting the spunlace nonwoven fabric of the invention are preferably artificial fibers or synthetic fibers, and natural fibers have skin-friendly and water-absorbing properties, but the fineness of natural fibers is relatively fixed, so that the average fineness of the fibers is far from the superfine grade, and the fineness of artificial or synthetic fibers can be easily controlled by adjusting the process conditions. In addition, in view of the water absorption and softness characteristics of the fiber itself, artificial natural cellulose fibers or synthetic polyacrylonitrile fibers excellent in both softness and hydrophilicity are preferable in the present invention.
The section of the ultrafine fiber of the present invention is approximately circular, elliptical, oval or triangular, and the section of the ultrafine fiber of the present invention is preferably approximately circular, elliptical or oval because the fiber having a flat circular section has the best flexibility.
The width of the longitudinal etched stripe is preferably 5 to 2000nm. If the width of the slit of the longitudinal etching-shaped stripe is too small, water molecules of the cosmetic liquid soaked in the prepared spunlace non-woven fabric are difficult to enter and cannot play a role in water retention; if the width of the gaps of the longitudinal etching-shaped stripes is too large, cosmetic liquid soaked in the prepared spunlace non-woven fabric can flow out from the gaps, so that the water locking capacity of the spunlace non-woven fabric is greatly reduced, and meanwhile, if the width of the stripes is too large, gaps on the surface of the fiber are larger, the mechanical property of the fiber can be greatly reduced, and the fiber is easy to break in use. The slit width of the longitudinal etching-like streaks of the present invention is more preferably 50 to 500nm in view of the water retentivity of the fibers and the assurance of the mechanical properties of the fibers.
The diameter of the superfine fiber is preferably 5.0-10.0 μm, if the diameter of the superfine fiber is too small, the fiber and the fiber are easy to be combined during the spunlace production processing, so that the cloth cover shortage of the obtained non-woven fabric is increased, small fiber bundles can appear on the surface of the product, and when the spunlace non-woven fabric is applied to cosmetic products such as a facial mask and the like, the performances of fitting, water retention and the like at the combined part are also greatly reduced, so that the usability is reduced; if the diameter of the ultrafine fibers is too large, the flexibility of the product is deteriorated, the water retentivity is lowered, and the excellent product performance cannot be achieved. The diameter of the ultrafine fiber of the present invention is more preferably 6.0 to 9.0 μm in consideration of softness and water retentivity of the spunlace nonwoven fabric.
The birefringence of the ultrafine fiber is preferably 0 to 0.06. The birefringence of the fiber can visually reflect the transparency of the fiber product besides representing the crystallinity of the fiber, and the lower the birefringence of the fiber, the better the transparency of the obtained spunlace nonwoven fabric, and if the transparency is good, the spunlace nonwoven fabric is light, thin and comfortable when being applied to cosmetic products such as facial masks and the like. If the birefringence of the superfine fiber is too high, the obtained spunlace nonwoven fabric has poor transparency, and when the spunlace nonwoven fabric is applied to cosmetic products such as facial masks, the spunlace nonwoven fabric gives a heavy feeling to a user and cannot provide light, thin and comfortable sensory experience for the user. The birefringence of the ultrafine fiber of the present invention is more preferably 0 to 0.03.
The density of the ultrafine fibers is preferably 1.0 to 1.4g/cm 3 . If it exceedsIf the density of the fine fibers is too high, the obtained spunlace non-woven fabric is thick, when the spunlace non-woven fabric is applied to cosmetic products such as a mask, the purposes of lightness and thinness cannot be achieved, and the spunlace non-woven fabric has a heavy feeling when being applied to parts such as a face; if the density of the superfine fiber is too small, the fiber weight is extremely light because the fiber fineness of the invention is very low, and the light fiber is difficult to grab and is easy to generate the phenomenon of flying in the roller transfer carding process of a carding machine, so the obtained spunlace non-woven fabric is easy to cause insufficient carding, and the defects of surface doubling, flying and the like are easily caused. The density of the ultrafine fiber of the present invention is more preferably 1.1 to 1.3g/cm in consideration of the light and thin feeling of the spunlace nonwoven fabric 3 。
The superfine fiber preferably has a crimp number of 10.0-20.0 mountain/25 mm and a crimp degree of 10.0-20.0%. Since the spunlace nonwoven fabric of the present invention is processed by carding with a carding machine, the fibers used need to have a certain number of crimps and degree of crimps. If the crimpling number and the crimpling degree of the superfine fibers are too small, the card clothing is difficult to sufficiently grab the fibers during fiber carding, carding is easy to be insufficient, simultaneously, the entanglement degree between the fibers is also reduced during lapping, and the damage or even the fracture of the fiber webs is easily caused during lapping, so that the processability of products is lost; if the curling number and the curling degree of the superfine fibers are too large, the superfine fibers are easy to comb during carding processing, so that the problem of doubling a bundle of fibers appears on the surface of a fiber net, the shortage of the obtained spunlace non-woven fabric is increased, small fiber bundles appear on the surface of a product, and when the spunlace non-woven fabric is applied to cosmetic products such as a mask, the performances of fitting, water retention and the like at the doubling position are greatly reduced, so that the usability is reduced. The ultrafine fiber of the present invention has a crimp number of more preferably 12.0 to 18.0 mountains/25 mm and a crimp degree of more preferably 12.0 to 18.0%.
The content of the ultrafine fibers in the spunlace nonwoven fabric of the invention is preferably 20 to 100% by weight. Because the superfine fiber has certain limitations in the aspects of processability and mechanical properties, for example, the superfine fiber has a fine fineness and is difficult to process, and meanwhile, because the fiber diameter is also low, the breaking strength of the fiber is also inevitably low, and the mechanical properties of a processed product are also very low, the spunlace nonwoven fabric disclosed by the invention can contain a certain amount of other fibers besides the superfine fiber, such as viscose fibers with common specifications, and is used for improving the processability of the superfine fiber and the mechanical properties of the product. However, the hydro-entangled non-woven fabric of the present invention has the advantages of softness, water retention, etc. because of the use of superfine fiber, the content of superfine fiber cannot be too low, and if the content is too low, the softness and water retention of the product are greatly reduced. Therefore, the content of the ultrafine fibers in the spunlace nonwoven fabric of the present invention is more preferably 30 to 70%.
The stiffness and softness of the spunlace nonwoven fabric of the invention are preferably 0.02-0.2 mN. The rigidity and softness can be measured by a Gray rigidity and softness tester or by other rigidity and softness testing methods. The softness can visually represent the softness of the product, and if the softness of the spunlace non-woven fabric is too high, the product has hard hand feeling and is easy to feel uncomfortable when in use; the lower the softness, the softer the product, but the softness cannot be lowered infinitely, and if the softness of the spunlace nonwoven is too low, the resulting spunlace nonwoven is very soft, but when applied to cosmetic products such as facial masks, the spunlace nonwoven is difficult to take and spread, and the form during use cannot be maintained. In view of this, the rigidity and softness of the spunlace nonwoven fabric of the present invention are more preferably 0.05 to 0.15mN.
The liquid retention rate of the spunlace nonwoven fabric is preferably 700-1500%. The liquid retention rate is an important index in the field of sanitary materials, and when the liquid retention rate of a product is higher, the absorption and water retention performance of the product is better. The invention uses the superfine fiber with the surface having etching-shaped stripes as the raw material, so the water-retaining property of the product can be ensured. In order to meet the use requirement of sanitary materials, the liquid retention rate of the product is more than 700%. Meanwhile, if the liquid retention rate of the product is too high, the more the liquid medicine is used, and the waste of the liquid medicine is easily caused, so that the liquid medicine retention rate of the product cannot be too high, more preferably 1500% or less, and further preferably 800% to 1000%.
The present invention is further illustrated by the following examples, but the scope of the present invention is not limited to the examples, and the physical property parameters in the examples are measured by the following methods.
[ Width of etching-shaped stripe on surface of superfine fiber ]
And (3) shooting the width of the etched stripe on the surface of the superfine fiber by adopting an SEM (scanning electron microscope), wherein the shooting magnification is 5000 times, randomly measuring the width of the widest part of the etched stripe on the surface of the superfine fiber, and taking the average value of 30 measurement results as the width of the longitudinal etched stripe on the surface of the superfine fiber.
[ diameter of ultrafine fiber ]
And (3) shooting a sample by adopting an SEM (scanning electron microscope) at a shooting magnification of 1000 times, randomly measuring the diameter of the superfine fiber with the surface striation, and taking the average value of 30 measurement results as the diameter of the superfine fiber.
[ birefringence ]
And testing the birefringence of the superfine fiber by adopting a polarizing microscope, respectively measuring the refractive indexes of the polarization surface of the superfine fiber parallel to the axial direction and the radial direction of the fiber, and then calculating the difference between the refractive index of the polarization surface of the superfine fiber parallel to the axial direction of the fiber and the refractive index of the polarization surface of the superfine fiber parallel to the radial direction of the fiber, namely the birefringence of the superfine fiber.
[ Density ]
The fiber density is measured by adopting a liquid displacement method, and the principle is that knot-shaped fibers are weighed in a normal state, then are completely immersed in liquid with the known density being less than the fiber density, the fibers are weighed again, the buoyancy of the fibers in the liquid is obtained, and the volume of the fibers is pushed out, so that the density of the fibers is obtained.
The experimental operation steps comprise firstly taking continuous and complete fibers with proper length to form knots, cleaning the knots with acetone, desizing the knots, putting the knots in an oven, drying the knots for 2 hours, taking the knots out, and accurately weighing W 1 . Taking a certain amount of liquid with known density less than the fiber density, immersing the fiber in the soaking liquid through a suspension wire, removing bubbles adhered to the surface of the fiber, and weighing the W again 2 The calculation formula is as follows:
W 1 g-W 2 g=ρ l Vg
ρ=W 1 /V
ρ=ρ l ×W 1 /（W 1 -W 2 ）
in the formula:
ρ: density of fiber (g/cm) 3 ）；
V: volume of fiber (cm) 3 ）；
W 1 : weight of sample at normal state (g);
W 2 : weight (g) in sample immersion liquid;
ρ l : density of impregnating solution (g/cm) 3 ）。
[ number of crimps ]
The crimp number is the number of crimps per unit length of the fiber, and affects the frictional force and cohesive force between fibers. And (3) taking continuous and complete fibers with proper lengths, and counting the number of all winding peaks and winding valleys of the fibers within 25mm, namely the number of crimps (unit: mountain/25 mm) of the fibers.
[ degree of curling ]
The degree of crimp represents the degree of shortening of the fiber, and is related to the number of windings and the amplitude, and an appropriate degree of crimp can improve the spinnability of the fiber. First, the straightened length of the wound fiber is measured and recorded as L 1 And the length of the fiber in the crimped state is measured and recorded as L 0 The calculation formula is as follows: degree of curling = (L) 1 -L 0 ）/L 1 ×100%。
[ gram weight ]
Measured according to JIS L1096, sample size: 200mm × 200mm, sampling position: three samples, namely the left, the center and the right, are respectively taken 3, and after the humidity is adjusted for 24 hours in a laboratory at 20 +/-2 ℃ multiplied by 65 +/-4%, the gram weight of the 3 samples is respectively tested by an electronic balance, and the average value is calculated.
[ Wet tensile Strength ]
Taking the size of a sample through warp and weft: width 50mm × length 200mm,5 pieces, clip distance: 100mm, drawing speed: 200mm/min. The sample was immersed in water at 20 ℃ for 10 minutes, taken out, stretched by a tensile tester, the maximum tensile strength of the material was recorded, and the average value was calculated after 5 times of tests.
[ elongation at Break in Wet State ]
Taking the size of a sample through warp and weft: width 50mm × length 200mm,5 pieces, clip distance: 100mm, drawing speed: 200mm/min. The sample was immersed in water at 20 ℃ for 10 minutes, then taken out, stretched by a tensile tester, the elongation at break of the material was recorded, and the elongation was measured 5 times, and the average value was calculated.
[ degree of rigidity & softness ]
Test apparatus: a Kurah hardness tester, distilled water and a dropper;
test piece size: 25X 25mm;
sampling and testing N number: average of longitudinal direction N = 3;
and (3) testing process: and clamping the cut sample on a Golay softness tester, wetting the sample by using a dropper after clamping is finished, and measuring and reading the softness of the sample after wetting.
[ liquid retention rate ]
Weighing the sample piece 10cm × 10cm to obtain a sample piece weight M 1 Then placing the sample piece into pure water to be soaked for 10 minutes, taking out the sample piece by using a pair of tweezers, suspending the sample piece for 1 minute, and weighing to obtain the weight M of the sample piece after water absorption 2 . The water retention was calculated by the following formula:
water retention rate = (M) 2 -M 1 ）/M 1 ×100%。
Example 1
50 weight percent of fineness of 0.3dtex is adopted, longitudinal etching-shaped stripes are arranged on the surface, the section is approximate to a circle, the stripe width is 100nm, the birefringence index is 0.01, and the density is 1.1g/cm 3 Respectively unpacking and opening the acrylic superfine fiber with the crimp number of 14.4 mountains/25 mm and the crimp degree of 13.2 percent and 50 weight percent of 1.7dtex viscose fiber, then carrying out cotton mixing, opening, carding, lapping and spunlacing processing by a cotton mixing box to prepare the acrylic superfine fiber with the diameter of 6.0 mu m and the viscose fiber which are alternately entangled, and the gram weight of 50g/m 2 The physical properties of the spun lace nonwoven fabric of the present invention are shown in table 1.
Example 2
The fineness of 50 wt% of the fiber was 0.5dtex, and the surface thereof was usedHas longitudinally etched stripes with approximately circular cross section, stripe width of 100nm, birefringence of 0.01, and density of 1.1g/cm 3 Respectively unpacking and opening acrylic superfine fiber with the crimp number of 14.4 mountains/25 mm and the crimp degree of 13.2 percent and 50 weight percent of 1.7dtex viscose fiber, then carrying out cotton mixing, opening, carding, lapping and spunlace processing by a cotton mixing box to prepare the acrylic superfine fiber with the diameter of 7.5 mu m, which is interactively entangled with the viscose fiber and has the gram weight of 50g/m 2 The physical properties of the spun lace nonwoven fabric of the present invention are shown in table 1.
Example 3
50 weight percent of the fiber number is 0.7dtex, the surface is provided with longitudinally etched stripes, the section is approximate to a circle, the width of the stripes is 100nm, the birefringence index is 0.01, and the density is 1.1g/cm 3 Respectively unpacking and opening the acrylic superfine fiber with the crimp number of 14.4 mountains/25 mm and the crimp degree of 13.2 percent and 50 weight percent of 1.7dtex viscose fiber, then carrying out cotton mixing, opening, carding, lapping and spunlacing processing by a cotton mixing box to prepare the acrylic superfine fiber with the diameter of 9.0 mu m and the viscose fiber which are alternately entangled, and the gram weight of 50g/m 2 The physical properties of the spun lace nonwoven fabric of the present invention are shown in table 1.
Example 4
50 weight percent of fineness of 0.9dtex is adopted, longitudinal etching-shaped stripes are arranged on the surface, the section is approximate to a circle, the stripe width is 100nm, the birefringence index is 0.01, and the density is 1.1g/cm 3 Respectively unpacking and opening acrylic superfine fiber with the crimp number of 14.4 mountains/25 mm and the crimp degree of 13.2 percent and 50 weight percent of 1.7dtex viscose fiber, then carrying out cotton mixing, opening, carding, lapping and spunlace processing by a cotton mixing box to prepare the acrylic superfine fiber with the diameter of 10.0 mu m, which is interactively entangled with the viscose fiber and has the gram weight of 50g/m 2 The physical properties of the spun lace nonwoven fabric of the present invention are shown in table 1.
Example 5
35 weight percent of fineness of 0.7dtex, longitudinally etched stripes on the surface, approximately circular cross section, stripe width of 10nm, birefringence of 0.01 and density of 1.1g/cm are adopted 3 Nitrile having a crimp number of 15.0 mountains/25 mm and a crimp degree of 14.0%Respectively unpacking and opening the ultrafine acrylic fiber and 65 wt% of 1.7dtex viscose fiber, then carrying out cotton mixing, opening, carding, lapping and spunlacing processing by a cotton mixing box to obtain the ultrafine acrylic fiber with the diameter of 9.0 mu m and the viscose fiber which are alternately entangled, wherein the gram weight is 50g/m 2 The physical properties of the spunlace nonwoven fabric of the invention are shown in table 1.
Example 6
35 weight percent of fineness of 0.7dtex, longitudinally etched stripes on the surface, approximately circular cross section, stripe width of 500nm, birefringence of 0.01 and density of 1.1g/cm are adopted 3 Respectively unpacking and opening acrylic superfine fiber with the crimp number of 15.0 mountain/25 mm and the crimp degree of 14.0 percent and 1.7dtex viscose fiber with the weight of 65 percent, then carrying out cotton mixing, opening, carding, lapping and spunlacing processing by a cotton mixing box to prepare the acrylic superfine fiber with the diameter of 9.0 mu m and the viscose fiber which are alternately entangled, and the gram weight of 50g/m 2 The physical properties of the spun lace nonwoven fabric of the present invention are shown in table 1.
Example 7
The fiber number of 35 wt% is 0.7dtex, the surface has longitudinal etching-shaped stripe, the cross section is approximate to circular, the width of the stripe is 2000nm, the birefringence index is 0.01, and the density is 1.1g/cm 3 Respectively unpacking and opening acrylic superfine fiber with the crimp number of 15.0 mountain/25 mm and the crimp degree of 14.0 percent and 1.7dtex viscose fiber with the weight percent of 65 percent, then carrying out cotton mixing, opening, carding, lapping and spunlace processing by a cotton mixing box to prepare the acrylic superfine fiber with the diameter of 9.0 mu m, which is alternately entangled with the viscose fiber and has the gram weight of 50g/m 2 The physical properties of the spun lace nonwoven fabric of the present invention are shown in table 1.
Example 8
35 weight percent of fineness of 0.7dtex, longitudinally etched stripes on the surface, approximately circular cross section, stripe width of 50nm, birefringence of 0.01 and density of 1.1g/cm are adopted 3 Respectively unpacking acrylic superfine fiber with the crimp number of 15.0 mountain/25 mm and the crimp degree of 14.0 percent and 1.7dtex viscose fiber with the weight percent of 65 percent, then carrying out cotton mixing, opening, carding, lapping and spunlace processing by a cotton mixing box to obtain the acrylic superfine fiber with the diameter of 9.0 mu mThe nylon superfine fiber and the viscose fiber are mutually entangled, and the gram weight is 50g/m 2 The physical properties of the parameters of the spunlace nonwoven fabric of the invention are shown in table 1.
Example 9
35 weight percent of fineness of 0.7dtex, longitudinally etched stripes on the surface, approximately circular cross section, width of 3000nm, birefringence of 0.01 and density of 1.1g/cm are adopted 3 Respectively unpacking and opening acrylic superfine fiber with the crimp number of 15.0 mountain/25 mm and the crimp degree of 14.0 percent and 1.7dtex viscose fiber with the weight percent of 65 percent, then carrying out cotton mixing, opening, carding, lapping and spunlace processing by a cotton mixing box to prepare the acrylic superfine fiber with the diameter of 9.0 mu m, which is alternately entangled with the viscose fiber and has the gram weight of 50g/m 2 The physical properties of the spun lace nonwoven fabric of the present invention are shown in table 2.
Example 10
100 weight percent of titer is 0.9dtex, the surface is provided with longitudinal etching-shaped stripes, the section is approximate to a circle, the width of the stripe is 2000nm, the birefringence is 0.02, and the density is 1.4g/cm 3 The viscose superfine fiber with the crimp number of 20.0 mountain/25 mm and the crimp degree of 20.0 percent is unpacked and opened, and then is mixed, opened, carded, lapped and spunlaced by a cotton mixing box to prepare the viscose superfine fiber with the diameter of 10.0 mu m and the gram weight of 50g/m 2 The physical properties of the spun lace nonwoven fabric of the present invention are shown in table 2.
Example 11
70 weight percent of fineness of 0.3dtex is adopted, longitudinal etching-shaped stripes are arranged on the surface, the section is approximate to a circle, the stripe width is 100nm, the birefringence index is 0.19, and the density is 1.3g/cm 3 Respectively unpacking and opening 30 weight percent of 1.7dtex viscose fiber by using the polyester superfine fiber with the crimp number of 14.0 mountain/25 mm and the crimp degree of 14.0 percent, and then carrying out cotton mixing, opening, carding, lapping and spunlace processing by using a cotton mixing box to prepare the polyester superfine fiber with the diameter of 6.0 mu m and the viscose fiber which are alternately entangled, wherein the gram weight of 50g/m 2 The physical properties of the spun lace nonwoven fabric of the present invention are shown in table 2.
Example 12
By means of 10 wt% fineness of 0.5dtex, longitudinally etched stripe on surface, approximately circular cross section, stripe width of 100nm, birefringence of 0.01, and density of 1.1g/cm 3 Respectively unpacking and opening acrylic superfine fiber with the crimp number of 14.4 mountains/25 mm and the crimp degree of 13.2 percent and 90 weight percent of 1.7dtex viscose fiber, then carrying out cotton mixing, opening, carding, lapping and spunlace processing by a cotton mixing box to prepare the acrylic superfine fiber with the diameter of 7.5 mu m, which is interactively entangled with the viscose fiber and has the gram weight of 50g/m 2 The physical properties of the spun lace nonwoven fabric of the present invention are shown in table 2.
Example 13
50 weight percent of the fiber number is 0.5dtex, the surface is provided with longitudinally etched stripes, the section is approximate to a circle, the width of the stripes is 100nm, the birefringence index is 0.03, and the density is 0.9g/cm 3 Respectively unpacking and opening the polypropylene superfine fiber with the crimp number of 13.4 mountains/25 mm and the crimp degree of 12.4 percent and 50 weight percent of 1.7dtex viscose fiber, then carrying out cotton mixing, opening, carding, lapping and spunlacing processing by a cotton mixing box to prepare the polypropylene superfine fiber with the diameter of 9.5 mu m and the viscose fiber which are alternately entangled, and the gram weight of 50g/m 2 The physical properties of the spun lace nonwoven fabric of the present invention are shown in table 2.
Example 14
50 weight percent of titer is 0.7dtex, the surface is provided with longitudinal etching-shaped stripes, the section is approximate to a circle, the width of the stripe is 3000nm, the birefringence is 0.06, and the density is 1.6g/cm 3 Respectively unpacking and opening the fiber-rich superfine fiber with the crimp number of 10.1 mountain/25 mm and the crimp degree of 11.2 percent and 50 weight percent of 1.7dtex viscose fiber, then carrying out cotton mixing, opening, carding, lapping and spunlacing processing by a cotton mixing box to prepare the fiber-rich superfine fiber with the diameter of 7.5 mu m, which is interactively entangled with the viscose fiber and has the gram weight of 50g/m 2 The physical properties of the spunlace nonwoven fabric of the invention are shown in table 2.
Example 15
50 weight percent of titer is 0.7dtex, the surface is provided with longitudinal etching-shaped stripes, the section is approximately triangular, the width of the stripe is 100nm, the birefringence is 0.01, and the density is 1.1g/cm 3 And is rolled and contractedRespectively unpacking and opening acrylic superfine fiber with the number of 14.4 mountains/25 mm and the crimp degree of 13.2 percent and 50 weight percent of 1.7dtex viscose fiber, then carrying out cotton mixing, opening, carding, lapping and spunlacing processing by a cotton mixing box to prepare the acrylic superfine fiber with the diameter of 9.0 mu m and the viscose fiber which are alternately entangled, and the gram weight of 50g/m 2 The physical properties of the spun lace nonwoven fabric of the present invention are shown in table 2.
Example 16
The fiber number of 35 wt% is 0.7dtex, the surface has transverse etching-shaped stripe, the cross section is approximate to circular, the width of the stripe is 500nm, the birefringence index is 0.01, and the density is 1.1g/cm 3 Respectively unpacking and opening acrylic superfine fiber with the crimp number of 15.0 mountain/25 mm and the crimp degree of 14.0 percent and 1.7dtex viscose fiber with the weight of 65 percent, then carrying out cotton mixing, opening, carding, lapping and spunlacing processing by a cotton mixing box to prepare the acrylic superfine fiber with the diameter of 9.0 mu m and the viscose fiber which are alternately entangled, and the gram weight of 50g/m 2 The physical properties of the spun lace nonwoven fabric of the present invention are shown in table 2.
Comparative example 1
100 weight percent of titer is 2.2dtex, the surface is provided with longitudinal etching-shaped stripes, the section is approximate to a circle, the width of the stripe is 100nm, the birefringence index is 0.01, and the density is 1.1g/cm 3 Acrylic fiber with 14.4 mountain/25 mm of crimp number and 13.2% of crimp degree is unpacked, opened and then subjected to opening, carding, lapping and spunlace processing to prepare the acrylic fiber with the diameter of 18.0 mu m and the gram weight of 50g/m 2 The properties of the spun lace nonwoven fabric of (1) are shown in Table 3.
Comparative example 2
50 weight percent of titer is 0.1dtex, the surface is provided with longitudinal etching-shaped stripes, the section is approximate to a circle, the stripe interval is 50nm, the birefringence is 0.01, and the density is 1.1g/cm 3 Respectively unpacking and opening the acrylic superfine fiber with the crimp number of 14.4 mountains/25 mm and the crimp degree of 13.2 percent and viscose fiber with the weight of 50 percent of 1.7dtex, then carrying out cotton mixing, opening, carding, lapping and spunlacing processing by a cotton mixing box to prepare the acrylic superfine fiber with the diameter of 3.0 mu m and the viscose fiber which are alternately entangled, and the gram weight of 50g/m 2 The physical properties of the nonwoven fabric are shown in Table 3.
Comparative example 3
50% by weight of a fiber fineness of 0.7dtex, a nearly circular cross section, a birefringence of 0.01, and a density of 1.1g/cm was used 3 Respectively unpacking and opening acrylic superfine fiber with the crimp number of 14.4 mountains/25 mm and the crimp degree of 13.2 percent and viscose fiber with the weight of 50 percent of 1.7dtex, then carrying out cotton mixing, opening, carding, lapping and spunlace processing by a cotton mixing box to prepare the acrylic superfine fiber with the diameter of 9.0 mu m which is interactively entangled with the viscose fiber and the gram weight of 50g/m 2 The physical properties of the nonwoven fabric are shown in Table 3.
TABLE 1
TABLE 2
TABLE 3
As shown in the above table, (1) in examples 1 to 4, it is understood that the smaller the fineness of the ultrafine fibers in example 1, the smaller the diameter of the obtained ultrafine fibers, and the lower the softness and high water retention of the obtained spunlace nonwoven fabric, and that the softness of the spunlace nonwoven fabric is low and the softness of example 1 is the best when the spunlace nonwoven fabric is applied to cosmetic products such as a mask.
(2) From examples 5 to 9, it is understood that under the same conditions, the water retention of the obtained spunlace nonwoven fabric is high when the width of the longitudinal etched stripes on the surface of the ultrafine fibers in examples 6 and 8 is within a more preferable range, and the water retention of the obtained spunlace nonwoven fabric is not high when the width of the longitudinal etched stripes on the surface of the ultrafine fibers in example 9 is large.
(3) From examples 6 and 16, it is understood that under the same conditions, the water retention rate and wet tensile strength of the obtained spunlace nonwoven fabric are higher than those of the ultrafine fibers of example 6 having a longitudinal stripe structure on the surface.
(4) As is clear from examples 3 and 15, under the same conditions, the section of the ultrafine fibers in example 3 is nearly circular, and the section of the ultrafine fibers in example 15 is triangular, and the stiffness of the spunlace nonwoven fabric obtained by the former is lower than that of the latter, and the softness of example 3 is good when the spunlace nonwoven fabric is applied to cosmetic products such as a face mask.
(5) As is clear from example 2 and example 12, under the same conditions, the content of the ultrafine fibers in example 2 is in the preferred range, and the obtained spunlace nonwoven fabric has lower softness than the latter, higher water retention than the latter, and the spunlace nonwoven fabric has good softness when applied to cosmetic products such as a face mask.
(6) As is clear from examples 1 to 4 and comparative example 1, if the fineness of the ultrafine fibers in comparative example 1 is too large under the same conditions, the obtained spunlace nonwoven fabric has high stiffness and low water retention, and the spunlace nonwoven fabric has high stiffness and softness, and the spunlace nonwoven fabric has poor flexibility in comparative example 1 when applied to cosmetic products such as a face mask.
(7) As is clear from examples 1 to 4 and comparative example 2, when the fineness of the ultrafine fibers in comparative example 2 is too small under the same conditions, the obtained spunlace nonwoven fabric has high water retention and good flexibility, but the wet tensile strength and elongation at break of the spunlace nonwoven fabric are very low, and the spunlace nonwoven fabric is very easily broken when applied to cosmetic products such as a face mask.
(8) It is understood from examples 1 to 4 and comparative example 3 that the water retention of the spun lace nonwoven fabric obtained in comparative example 3 has no etched stripe structure on the surface of the ultrafine fiber under the same conditions.
Claims (6)
1. A spunlace nonwoven fabric is characterized in that: the non-woven fabric comprises superfine fibers with the fineness of 0.3-0.9 dtex, wherein the surfaces of the superfine fibers are in an etched stripe structure, the surfaces of the superfine fibers are in a longitudinal etched stripe structure, the birefringence of the superfine fibers is 0-0.06, the width of the longitudinal etched stripe is 5-2000 nm, the crimp number of the superfine fibers is 10.0-20.0 mountains/25 mm, the crimp number refers to the crimp number in the unit length of the fibers, the crimp number influences the friction force and cohesive force among the fibers, continuous and complete fibers with proper length are taken, all crimp peaks and crimp valleys in the 25mm of the fibers are counted, and the crimp number is the crimp number of the fibers, wherein the unit is mountains/25 mm.
2. A hydroentangled nonwoven fabric according to claim 1, characterized in that: the diameter of the superfine fiber is 5.0-10.0 μm.
3. A hydroentangled nonwoven fabric according to claim 1, characterized in that: the density of the superfine fiber is 1.0 to 1.4g/cm 3 。
4. A hydroentangled nonwoven fabric according to claim 1, characterized in that: the content of the ultrafine fibers in the nonwoven fabric is 20 to 100% by weight.
5. A hydroentangled nonwoven fabric according to claim 1, characterized in that: the nonwoven fabric has a stiffness/softness of 0.02 to 0.2mN.
6. A hydroentangled nonwoven fabric according to claim 1, characterized in that: the liquid retention rate of the non-woven fabric is 700-1500%.
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE3381143D1 (en) * | 1982-03-31 | 1990-03-01 | Toray Industries | ULTRA FINE KINDED FIBERS FIBERS, AND METHOD FOR PRODUCING THE SAME. |
| JPH09111536A (en) * | 1995-10-18 | 1997-04-28 | Chisso Corp | Splittable type conjugated fiber and nonwoven fabric using the same |
| CN100560835C (en) * | 2007-02-28 | 2009-11-18 | 晋江市兴泰无纺制品有限公司 | Hydro-entangled fine decitex non-woven fabric and production method thereof |
| JP5536645B2 (en) * | 2008-06-02 | 2014-07-02 | ダイワボウホールディングス株式会社 | Skin covering sheet for impregnating cosmetics and face mask |
| CN203065776U (en) * | 2012-12-18 | 2013-07-17 | 晋江市兴泰无纺制品有限公司 | Super-soft spunlace non-woven fabrics |
| AT515693B1 (en) * | 2014-10-29 | 2015-11-15 | Chemiefaser Lenzing Ag | Fast fibrillating lyocell fibers and their use |
| CN105544090A (en) * | 2016-01-21 | 2016-05-04 | 苏州印丝特纺织数码科技有限公司 | Patterned non-woven fabric with concave-convex patterns and preparing method of patterned non-woven fabric |
| CN107630290B (en) * | 2016-07-18 | 2021-11-16 | 东丽纤维研究所（中国）有限公司 | Sheet-shaped non-woven fabric for skin care and production method thereof |
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