CN110747584A - Production method and application of non-rolling point super-elastic non-woven fabric - Google Patents
Production method and application of non-rolling point super-elastic non-woven fabric Download PDFInfo
- Publication number
- CN110747584A CN110747584A CN201910861305.4A CN201910861305A CN110747584A CN 110747584 A CN110747584 A CN 110747584A CN 201910861305 A CN201910861305 A CN 201910861305A CN 110747584 A CN110747584 A CN 110747584A
- Authority
- CN
- China
- Prior art keywords
- hot rolling
- woven fabric
- polyurethane
- fiber web
- rolling mill
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/005—Synthetic yarns or filaments
- D04H3/009—Condensation or reaction polymers
-
- 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
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/88—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds
- D01F6/94—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of other polycondensation products
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/14—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The invention discloses a production method and application of a non-rolling point superelastic non-woven fabric. Preparing the polyurethane master batch into fiber webs; preheating the fiber web, and conveying the fiber web to a first hot rolling mill with double smooth rolls for hot rolling and bonding, wherein the temperature of the hot rolling mill is 70-90 ℃, and the linear pressure is 1-5 MPa; conveying the hot-rolled fiber web to a second hot rolling mill with double smooth rolls for hot rolling, wherein the temperature of the hot rolling mill is 100-130 ℃, and the linear pressure is 1-5 MPa; and finally rolling, shearing and packaging. The non-roll point super-elastic non-woven fabric can replace a plastic film and a roll point elastic non-woven fabric, has excellent elasticity and rebound resilience, and has the advantages of water and oil repellency, air permeability and the like. The invention has low production cost and high production speed, and is an ideal elastic material.
Description
Technical Field
The invention relates to the technical field of non-woven fabrics, in particular to a production method and application of a non-rolling point super-elastic non-woven fabric.
Background
Non-woven fabrics, also called non-woven fabrics, are made of oriented or random fibers and are a new generation of environment-friendly materials. The non-woven fabric has the characteristics of moisture resistance, air permeability, flexibility, light weight, easy decomposition, no toxicity, no irritation and the like, so the non-woven fabric is more and more widely used in the medical and sanitary fields. However, due to the special use of medical and hygienic materials, nonwoven fabrics often need to have a certain elasticity. Normally, nonwoven products are not elastic.
The prior elastic non-woven fabric products are all that a layer of elastic film is sandwiched between two layers of spun-bonded non-woven fabrics or elastic materials are sprayed on the surfaces of the non-woven fabrics; another method is to prepare two layers of fiber webs by a spun-bonding method, sandwich a layer of elastic fiber web, and then hot-roll the two layers of fiber webs together to form a layer of non-woven fabric. Although the elastic non-woven fabrics prepared by the two methods can also provide certain elasticity, the first non-woven fabric adopts a layer structure, so that the non-woven fabric is easy to delaminate or break in the using process; the second square nonwoven fabric is not a layer structure, but the nonwoven fabric is a three-layer web which is hot-rolled, and the upper and lower two layers of webs are made of materials with smaller elasticity, so that the nonwoven fabric is broken or has poor resilience when the elasticity is too large in use. Because both the two non-woven fabrics are non-woven fabrics with rolling points, the multi-layer structure is rolled together by the rolling points, so when the non-woven fabrics are stretched or have larger elasticity, the rolling points can restrain the elasticity of the non-woven fabrics, and the rebound resilience is general.
The plastic film is a material commonly used in our daily life, and mainly comprises polyethylene plastic film, polyester film, polyurethane plastic film and the like. Polyethylene plastic films have high strength but low elasticity, Polyester (PET) films have high hardness and high toughness but low elasticity, while polyurethane plastic films have less strength than polyethylene films but high elasticity. The polyurethane film is a common high-elasticity material, has wide application range and is used in various fields of medical sanitation, packaging, transportation and the like. However, polyurethane films have poor air permeability, and when used in medical tapes, plasters, masks, surgical bandages and the like, the polyurethane films often cause skin allergy, red swelling and the like when contacting skin due to poor air permeability, and have poor strength as compared with non-woven fabrics. When the thickness is the same, the elasticity of the nonwoven fabric with the roll points is not as good as that of the plastic film, but the plastic film has no air permeability of the nonwoven fabric with the roll points. Therefore, a high-resilience imitation film non-woven fabric which has high elasticity of the plastic film, and has air permeability and high strength of the non-woven fabric is needed at present.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the non-roll-point super-elastic non-woven fabric to replace the use of a plastic film and a roll-point elastic non-woven fabric.
The invention is realized by the following technical scheme, and in a first aspect of the invention, a production method of a roll point super-elastic non-woven fabric is provided, which comprises the following steps:
(1) extruding, melting and spinning the polyurethane master batch by a spunbond method to prepare polyurethane fiber;
(2) dividing and lapping polyurethane fibers to prepare a fiber web, and then sending the fiber web into an oven for preheating;
(3) conveying the fiber web to a first hot rolling mill with double smooth rolls for hot rolling, wherein the temperature of the hot rolling mill is 70-90 ℃, and the linear pressure is 1-5 MPa;
(4) conveying the hot-rolled fiber web to a second hot rolling mill with double smooth rolls for hot rolling, wherein the temperature of the hot rolling mill is 100-130 ℃, and the linear pressure is 1-5 MPa;
(5) and (6) rolling, shearing and packaging.
Preferably, the polyurethane master batch consists of the following raw materials in parts by weight: 97-100 parts of polyurethane slices and 0-3 parts of color master batches.
Preferably, the diameter of the polyurethane fiber is 15-25 μm.
Preferably, the preheating temperature of the oven is 130-160 ℃, and the preheating time is 10-20 min.
The invention provides a flame-retardant non-rolling-point superelastic non-woven fabric for packaging.
Preferably, the thickness of the non-woven fabric is 10-100 μm, and the surface density is 1-25 g/cm2。
Preferably, the strength CD is up to 21.6N/5cm, and the strength MD is up to 35.2N/5 cm; the elongation rate CD reaches 480.0 percent and the elongation rate MD reaches 550.6 percent; the rebound resilience reaches 110-120%.
Preferably, the hydrostatic pressure reaches 42.9cmH2And O, the oil repellency grade reaches 7.
Preferably, the air permeability reaches 30.59L/m2·s。
The third aspect of the invention provides an application of the flame-retardant non-rolling-point superelastic non-woven fabric for packaging:
1) the use of plastic films is replaced;
2) the elastic non-woven fabric with the roll points is replaced;
3) can be used in combination with other non-woven fabrics.
The invention has the beneficial effects that:
1. the non-roll point super-elastic non-woven fabric is formed by hot rolling a layer of spun-bonded fiber net, and can be made into non-roll point non-woven fabrics with different colors by adding color master batches.
2. Compared with the elastic non-woven fabric with the rolling points, the non-rolling point super-elastic non-woven fabric has the advantages of low production cost, higher production speed and no need of post-treatment process.
3. The non-rolling point super-elastic non-woven fabric has good water repellency, oil repellency and air permeability.
4. The non-roll point super-elastic non-woven fabric does not contain a binding agent, is convenient to print, does not fade and is easier to print patterns compared with a plastic film.
5. The non-roll point super-elastic non-woven fabric has elasticity and rebound resilience higher than those of roll point elastic non-woven fabric and plastic film.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
As described in the background, elastic nonwoven fabrics currently on the market are prepared in essentially two ways: one is that a layer of elastic film is sandwiched between two layers of spun-bonded non-woven fabrics or elastic materials are sprayed on the surface of the non-woven fabrics; the other method is to prepare two fiber nets by a spun-bonding method, sandwich a layer of elastic fiber net in the middle and then hot-roll the elastic fiber nets together to form a layer of non-woven fabric. The non-woven fabrics prepared by the two methods are non-woven fabrics with roll points, and the elasticity and the rebound resilience are limited by the roll points. Based on the above, the invention provides a non-roll-point super-elastic non-woven fabric which is a film-imitated non-woven fabric and has the elasticity and resilience of a polyurethane film and the air permeability, water repellency and oil repellency of the non-woven fabric.
The non-roll point super-elastic non-woven fabric is produced by the following method:
(1) extruding, melting and spinning the polyurethane master batch by a spunbond method to prepare polyurethane fiber;
(2) dividing and lapping polyurethane fibers to prepare a fiber web, and then sending the fiber web into an oven for preheating;
(3) conveying the fiber web to a first hot rolling mill with double smooth rolls for hot rolling, wherein the temperature of the hot rolling mill is 70-90 ℃, and the linear pressure is 1-5 MPa;
(4) conveying the hot-rolled fiber web to a second hot rolling mill with double smooth rolls for hot rolling, wherein the temperature of the hot rolling mill is 100-130 ℃, and the linear pressure is 1-5 MPa;
(5) and (6) rolling, shearing and packaging.
The non-woven fabric is hot-rolled by replacing a pattern roller of a hot rolling mill with a smooth roller, and the smooth roller hot rolling mill has no rolling point and is hard extruded into a whole by pressure, so that the non-uniform cloth cover can be generated. The polyurethane fiber is softer, and the pressure of hot rolling is too large, so that the cloth cover is easy to crush. In order to uniformly hot-roll the cloth surface, the fiber web needs to be preheated before hot-rolling. The non-woven fabric is a single-layer spunbond layer, is not compounded with other spunbond layers or melt-blown layers, and does not have the condition of bonding multiple fiber webs together during hot rolling, so that only very small pressure (the pressure of a hot rolling line is 1-5 MPa) is required. If the hot rolling temperature is set to 100 ℃ or higher at the beginning, the web is easily crushed or stuck even by a small pressure because of its thinness. The inventor finds that the phenomenon of crushing or roller sticking does not occur after hot rolling when the hot rolling temperature is controlled to be 70-90 ℃ through a plurality of tests. And then the hot rolling temperature is raised to be more than 100 ℃ for hot rolling, and the place with uneven cloth cover, which appears in the hot rolling of the previous procedure, is uniformly pressed. However, the hot rolling temperature needs to be controlled between 100 ℃ and 130 ℃, and the problems of roll sticking and the like still occur when the temperature exceeds 130 ℃. The non-rolling point super-elastic non-woven fabric produced by the process does not need post-treatment and can be directly packed and rolled.
The polyurethane master batch is prepared from the following raw materials in parts by weight: 97-100 parts of polyurethane slices and 0-3 parts of color master batches. The polyurethane master batch is not added with the master batch, and the produced roll-point-free super-elastic non-woven fabric is transparent and can replace a plastic film for use, but is easier to print patterns than the plastic film. Color master batches, such as white color master batches, are added into the polyurethane master batches, and the produced roll-point-free super-elastic non-woven fabric is white and can replace white elastic non-woven fabric for use.
The color master batch is a commercial product, and if the white non-roll-point non-woven fabric needs to be produced, the white color master batch is purchased, and the non-roll-point non-woven fabrics with different colors are produced according to the color of the color master batch.
In order to make the technical solutions of the present application more clearly understood by those skilled in the art, the technical solutions of the present application will be described in detail below with reference to specific embodiments. If the experimental conditions not specified in the examples are specified, the conditions are generally conventional or recommended by the reagent company; reagents, consumables, and the like used in the following examples are commercially available unless otherwise specified.
Example 1: preparation of non-rolling point super-elastic non-woven fabric
1. Adding a polyurethane master batch containing 97 parts of polyurethane slices and 3 parts of white master batches into a hopper; extruding and melting the stirred polypropylene master batch to a screw through a feeding system (vacuum suction) to obtain a hot melt (the melting temperature of the screw is 180 ℃); filtering, metering and distributing the hot melt at 250 ℃ and 5 MPa; spinning the hot melt which is distributed and measured, and cooling the spun yarn by side cold air to obtain a primary filament (the hot melt which is distributed and measured is spun through a jet yarn with the aperture of 0.8mm, and is cooled by a cooling air box, the temperature of the cooling air box is 20 ℃, the speed of the cooling air is 0.2m/s, and the primary filament is obtained by cooling the yarn); drafting the as-spun filaments to obtain fibers (the as-spun filaments are subjected to air flow drafting through a horn mouth of a slit type drafting device in an air flow splitting mode, the air flow drafting speed is 5000m/H to obtain fibers with the fineness of 1.8 denier, and meanwhile, molecular chains of the as-spun filaments after drafting are arranged orderly to generate strong force to form the fibers); dividing and lapping the fibers to obtain a spunbonded layer fiber web (the fibers are paved on a net forming curtain in a messy way, an exhaust fan is arranged below the net forming curtain to perform downward suction, the fibers are fixed on the net forming curtain, and prepressing is performed through a prepressing roller to form the fiber web);
2. dividing and lapping polyurethane fibers to prepare a fiber web, and then sending the fiber web into an oven for preheating at the preheating temperature of 160 ℃ for 10 min;
3. conveying the preheated fiber web to a first hot rolling mill with a double-sided smooth roll for hot rolling and bonding, wherein the temperature of the hot rolling mill is 70 ℃, and the linear pressure is 5 MPa; the double-sided smooth roll hot rolling mill is formed by replacing a pattern roll of a pattern roll hot rolling mill for producing non-woven fabrics with a smooth roll.
4. Conveying the fiber web subjected to hot rolling to a second hot rolling mill with a double-sided smooth roll for hot rolling, wherein the temperature of the hot rolling mill is 130 ℃, and the linear pressure is 1 MPa;
5. and (6) rolling, shearing and packaging.
Example 2: preparation of non-rolling point super-elastic non-woven fabric
1. Adding 100 parts of polyurethane slices into a hopper; extruding and melting the stirred polyurethane slices to a screw through a feeding system (vacuum suction) to obtain a hot melt (the melting temperature of the screw is 270 ℃); filtering, metering and distributing the hot melt at 230 ℃ and 10 MPa; spinning the hot melt which is distributed and measured, and cooling the spun yarn by side cold air to obtain a primary filament (the hot melt which is distributed and measured is spun through a jet yarn with the aperture of 0.7mm, and is cooled by a cooling air box, the temperature of the cooling air box is 10 ℃, the speed of the cooling air is 1.5m/s, and the primary filament is obtained by cooling the yarn); drafting the as-spun filaments to obtain fibers (the as-spun filaments are subjected to air flow drafting through a horn mouth of a slit type drafting device in an air flow splitting mode, the air flow drafting speed is 2000m/H to obtain fibers with the fineness of 2.2 denier, and meanwhile, molecular chains of the as-spun filaments after drafting are arranged orderly to generate strong force to form the fibers); dividing and lapping the fibers to obtain a spunbonded layer fiber web (the fibers are paved on a net forming curtain in a messy way, an exhaust fan is arranged below the net forming curtain to perform downward suction, the fibers are fixed on the net forming curtain, and prepressing is performed through a prepressing roller to form the fiber web);
2. dividing and lapping polyurethane fibers to prepare a fiber web, and then sending the fiber web into an oven for preheating at the preheating temperature of 160 ℃ for 10 min;
3. conveying the preheated fiber web to a first hot rolling mill with a double-sided smooth roll for hot rolling and bonding, wherein the temperature of the hot rolling mill is 90 ℃, and the linear pressure is 1 MPa; the double-sided smooth roll hot rolling mill is formed by replacing a pattern roll of a pattern roll hot rolling mill for producing non-woven fabrics with a smooth roll.
4. The fiber web after hot rolling is transmitted to a second hot rolling mill with double smooth rolls for hot rolling, wherein the temperature of the hot rolling mill is 100 ℃, and the linear pressure is 5 MPa;
5. and (6) rolling, shearing and packaging.
Comparative example 1: preparation of elastic non-woven fabric with rolling points
1. Adding a polyurethane master batch containing 97 parts of polyurethane slices and 3 parts of white master batches into a hopper; extruding and melting the stirred polypropylene master batch to a screw through a feeding system (vacuum suction) to obtain a hot melt (the melting temperature of the screw is 180 ℃); filtering, metering and distributing the hot melt at 250 ℃ and 5 MPa; spinning the hot melt which is distributed and measured, and cooling the spun yarn by side cold air to obtain a primary filament (the hot melt which is distributed and measured is spun through a jet yarn with the aperture of 0.8mm, and is cooled by a cooling air box, the temperature of the cooling air box is 20 ℃, the speed of the cooling air is 0.2m/s, and the primary filament is obtained by cooling the yarn); drafting the as-spun filaments to obtain fibers (the as-spun filaments are subjected to air flow drafting through a horn mouth of a slit type drafting device in an air flow splitting mode, the air flow drafting speed is 5000m/H to obtain fibers with the fineness of 1.8 denier, and meanwhile, molecular chains of the as-spun filaments after drafting are arranged orderly to generate strong force to form the fibers); dividing and lapping the fibers to obtain a spunbonded layer fiber web (the fibers are paved on a net forming curtain in a messy way, an exhaust fan is arranged below the net forming curtain to perform downward suction, the fibers are fixed on the net forming curtain, and prepressing is performed through a prepressing roller to form the fiber web);
2. the fiber web is transmitted to a hot rolling mill (a pattern roller) for hot rolling and bonding by a net curtain formed by the fiber web under the drive of a net curtain roller, wherein the temperature of the hot rolling mill is 100 ℃, and the linear pressure is 50 MPa.
3. The hot-rolled non-woven fabric is subjected to after-finishing treatment by an after-finishing system, hot air heating and three times of stretching are carried out simultaneously, and the heating temperature is 80 DEG C
4. And (6) rolling, shearing and packaging.
Comparative example 2: medical TPU membrane
From Dongguan City Xionglin New Material science and technology Co Ltd
Test example 1: basic index detection
The thickness of the non-nip point superelastic non-woven fabric prepared in the examples and the thickness of the comparative examples were measured by a thickness gauge, weighed by an electronic scale, and the areal density was calculated. The results are shown in Table 1.
TABLE 1 basic indexes
| Test items | Example 1 | Example 2 | Comparative example 1 | Comparative example 2 |
| Thickness mm | 0.02 | 0.02 | 0.02 | 0.02 |
| Areal density g/cm2±5 | 8.3 | 8.5 | 12.0 | — |
As can be seen from Table 1, the non-rolled nonwoven fabrics obtained in examples 1 to 2 had a lower areal density than the rolled nonwoven fabric obtained in comparative example 1 at the same thickness. The non-roll point non-woven fabrics prepared in examples 1-2 were lighter.
Test example 2: strength and elasticity test
Examples 1-2 and comparative examples 1-2 were tested for strength, elongation and resilience using an electronic tensile testing machine, and the results are shown in Table 2.
Table 2 strength and elongation test results
As can be seen from Table 2, the non-woven fabric of the invention has excellent elongation which is improved by 30% compared with the elongation of the elastic non-woven fabric with the roll points in the comparative example 1; the elongation rate was substantially the same as that of comparative example 2 medical polyurethane film, but the strength was much higher than that of comparative example 2. The rebound resilience of the non-woven fabrics prepared in the embodiments 1 and 2 is far lower than that of the comparative examples, is about 110-120%, and has excellent rebound resilience. By contrast, the non-roll point superelastic non-woven fabric has the strength of roll point elastic non-woven fabric and the elasticity of a polyurethane film.
Test example 3: water repellency test
Hydrostatic pressure tests are carried out on the examples and the comparative examples by using a hydrostatic pressure instrument, the water repellency of the product is detected, and the obtained result is shown in table 3;
TABLE 3 hydrostatic test results
As can be seen from table 3, the hydrostatic pressure of the non-nip superelastic nonwoven fabrics prepared in examples 1 and 2 is much higher than that of the nip nonwoven fabric prepared in comparative example 1, and it can be seen that the non-nip nonwoven fabric prepared using the smooth roll hot rolling technique has better water repellency. Can be used instead of elastic non-woven fabric.
Test example 4: oil repellency test
Using AATCC118-1992, 0.05ml of the lowest numbered test liquid, which had not penetrated and wetted within 30s, was added dropwise to the product obtained in the examples and comparative examples in that order, and the nonwoven was subsequently coated with the higher numbered test liquid. The experiment was continued until the test liquid wetted the underlying and surrounding nonwoven within 30 s. The oil repellency rating of the nonwoven fabric is indicated by the highest numbered test liquid that failed to wet the nonwoven fabric within 30S (oil repellency test reagent in table 4), and the results are shown in table 5.
TABLE 4 oil repellency test reagents
| Oil repellency rating | Standard test liquid |
| 1 | White mineral oil |
| 2 | White mineral oil: n-hexadecane ═ 65:35(V/V) |
| 3 | N-hexadecane |
| 4 | N-tetradecane |
| 5 | N-dodecane |
| 6 | N-decane |
| 7 | N-octane |
| 8 | N-heptane |
Table 5 oil repellency test results
| Test items | Example 1 | Example 2 | Comparative example 1 | Comparative example 2 |
| Oil repellency rating | 7 | 7 | 6 | — |
As can be seen from table 5, the non-nip superelastic nonwoven fabrics prepared in examples 1 and 2 have higher oil repellency rating than the non-nip superelastic nonwoven fabric prepared in comparative example 1, and it can be seen that the non-nip superelastic nonwoven fabrics prepared by the smooth roll hot rolling technique have better oil repellency. Can be used instead of elastic non-woven fabric.
Test example 5: air permeability test
The nonwoven fabrics prepared in examples and comparative examples were subjected to air permeability test using a water vapor permeability tester, and the results are shown in table 6.
Table 6 air permeability results
| Test items | Example 1 | Example 2 | Comparative example 1 | Comparative example 2 |
| Air permeability L/square meter | 830.23 | 830.59 | 830.53 | — |
As can be seen from table 6, the air permeability of the non-nip superelastic nonwoven fabrics obtained in examples 1 and 2 was substantially the same as that of comparative example 1, and was comparable to that of comparative example 1 in air permeability.
Since the water-and oil-repellency and air permeability tests were not performed since the polyurethane film was not a woven fabric, it was not possible to compare whether the water-and oil-repellency and air permeability of the non-nip superelastic nonwoven fabrics prepared in examples 1 and 2 were higher than those of the polyurethane film. However, from the test results of the examples, the non-roll elastic nonwoven fabric prepared by the invention has strong water and oil repellency and good air permeability, and can completely replace the medical polyurethane film in the aspects of medical adhesive tapes, plaster patches, masks, surgical bandaging bandages and the like.
Of course, the above description is not limited to the above examples, and the undescribed technical features of the present invention can be implemented by or using the prior art, and will not be described herein again; the above embodiments are merely for illustrating the technical solutions of the present invention and not for limiting the present invention, and the present invention has been described in detail with reference to the preferred embodiments, and those skilled in the art should understand that changes, modifications, additions or substitutions which are made by those skilled in the art within the spirit of the present invention are also within the scope of the claims of the present invention.
Claims (10)
1. The production method of the non-rolling point super-elastic non-woven fabric is characterized by comprising the following steps:
(1) extruding, melting and spinning the polyurethane master batch by a spunbond method to prepare polyurethane fiber;
(2) dividing and lapping polyurethane fibers to prepare a fiber web, and then sending the fiber web into an oven for preheating;
(3) conveying the fiber web to a first hot rolling mill with double smooth rolls for hot rolling, wherein the temperature of the hot rolling mill is 70-90 ℃, and the linear pressure is 1-5 MPa;
(4) conveying the hot-rolled fiber web to a second hot rolling mill with double smooth rolls for hot rolling, wherein the temperature of the hot rolling mill is 100-130 ℃, and the linear pressure is 1-5 MPa;
(5) and (6) rolling, shearing and packaging.
2. The method according to claim 1, wherein the polyurethane masterbatch is composed of the following raw materials in parts by weight: 97-100 parts of polyurethane slices and 0-3 parts of color master batches.
3. The method of claim 1, wherein the polyurethane fibers have a diameter of 15 to 25 μm.
4. The method according to claim 1, wherein the preheating temperature of the oven is 130-160 ℃, and the preheating time is 10-20 min.
5. A non-nip superelastic nonwoven fabric produced by the method of any one of claims 1-4.
6. The nonwoven fabric of claim 5, wherein the nonwoven fabric has a thickness of 10 to 100 μm and an areal density of 1 to 25g/cm2。
7. The nonwoven fabric of claim 5, wherein the strength CD is up to 21.6N/5cm and the strength MD is up to 35.2N/5 cm; the elongation rate CD reaches 480.0 percent and the elongation rate MD reaches 550.6 percent; the rebound resilience reaches 110-120%.
8. The nonwoven fabric of claim 5, wherein the hydrostatic pressure reaches 42.9cmH2And O, the oil repellency grade reaches 7.
9. The nonwoven fabric of claim 5, wherein the air permeability is 30.59L/m2·s。
10. Use of the non-nip superelastic nonwoven fabric according to any of claims 5-9 in at least one of the following 1) -3):
1) the use of plastic films is replaced;
2) the elastic non-woven fabric with the roll points is replaced;
3) can be used in combination with other non-woven fabrics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910861305.4A CN110747584A (en) | 2019-09-12 | 2019-09-12 | Production method and application of non-rolling point super-elastic non-woven fabric |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910861305.4A CN110747584A (en) | 2019-09-12 | 2019-09-12 | Production method and application of non-rolling point super-elastic non-woven fabric |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110747584A true CN110747584A (en) | 2020-02-04 |
Family
ID=69276426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910861305.4A Pending CN110747584A (en) | 2019-09-12 | 2019-09-12 | Production method and application of non-rolling point super-elastic non-woven fabric |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110747584A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1772992A (en) * | 2005-11-15 | 2006-05-17 | 纺粘无纺布(深圳)有限公司 | Method for producing elastic non-woven cloth by spun-bonded and equipment thereof |
| US7968479B2 (en) * | 2008-06-30 | 2011-06-28 | Kimberly-Clark Worldwide, Inc. | Elastic multilayer composite including pattern unbonded elastic materials, articles containing same, and methods of making same |
| EP2392713A1 (en) * | 2010-06-07 | 2011-12-07 | Andritz Küsters GmbH | Engraved roller and method of consolidating a nonwoven fabric comprising thermoplastic filaments |
| CN202671825U (en) * | 2012-05-14 | 2013-01-16 | 镇江立达纤维工业有限责任公司 | Fiber felt production equipment |
| CN103469493A (en) * | 2013-09-13 | 2013-12-25 | 仪征市荣胜电池隔膜有限公司 | Production method for filtration cloth |
| CN205529359U (en) * | 2016-02-24 | 2016-08-31 | 江西国桥实业有限公司 | Non -woven fabrics hot rolling mill with preheat function |
| CN106051448A (en) * | 2016-07-15 | 2016-10-26 | 厦门和洁无纺布制品有限公司 | Micro-porous membrane and production method thereof |
| 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 |
| CN109162142A (en) * | 2018-09-14 | 2019-01-08 | 天津工业大学 | A kind of tubular membrane non-woven base cloth and preparation method thereof |
| CN109371570A (en) * | 2018-10-22 | 2019-02-22 | 山东恒鹏卫生用品有限公司 | A kind of smooth roll hot rolling elastic non-woven and its manufacturing method |
| CN109652919A (en) * | 2018-12-24 | 2019-04-19 | 美泰纺(佛山)新材料有限公司 | A kind of mirror surface non-woven fabrics and its production method |
| CN208917451U (en) * | 2018-09-25 | 2019-05-31 | 太仓民翔特种无纺布有限公司 | A kind of nonwoven production hot roll |
-
2019
- 2019-09-12 CN CN201910861305.4A patent/CN110747584A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1772992A (en) * | 2005-11-15 | 2006-05-17 | 纺粘无纺布(深圳)有限公司 | Method for producing elastic non-woven cloth by spun-bonded and equipment thereof |
| US7968479B2 (en) * | 2008-06-30 | 2011-06-28 | Kimberly-Clark Worldwide, Inc. | Elastic multilayer composite including pattern unbonded elastic materials, articles containing same, and methods of making same |
| EP2392713A1 (en) * | 2010-06-07 | 2011-12-07 | Andritz Küsters GmbH | Engraved roller and method of consolidating a nonwoven fabric comprising thermoplastic filaments |
| CN202671825U (en) * | 2012-05-14 | 2013-01-16 | 镇江立达纤维工业有限责任公司 | Fiber felt production equipment |
| CN103469493A (en) * | 2013-09-13 | 2013-12-25 | 仪征市荣胜电池隔膜有限公司 | Production method for filtration cloth |
| CN205529359U (en) * | 2016-02-24 | 2016-08-31 | 江西国桥实业有限公司 | Non -woven fabrics hot rolling mill with preheat function |
| CN106051448A (en) * | 2016-07-15 | 2016-10-26 | 厦门和洁无纺布制品有限公司 | Micro-porous membrane and production method thereof |
| 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 |
| CN109162142A (en) * | 2018-09-14 | 2019-01-08 | 天津工业大学 | A kind of tubular membrane non-woven base cloth and preparation method thereof |
| CN208917451U (en) * | 2018-09-25 | 2019-05-31 | 太仓民翔特种无纺布有限公司 | A kind of nonwoven production hot roll |
| CN109371570A (en) * | 2018-10-22 | 2019-02-22 | 山东恒鹏卫生用品有限公司 | A kind of smooth roll hot rolling elastic non-woven and its manufacturing method |
| CN109652919A (en) * | 2018-12-24 | 2019-04-19 | 美泰纺(佛山)新材料有限公司 | A kind of mirror surface non-woven fabrics and its production method |
Non-Patent Citations (5)
| Title |
|---|
| 张月庆等: ""纺粘法非织造布的粘合机理及热轧工艺对产品性能的影响"", 《非织造布》 * |
| 言宏元: "《非织造工艺学》", 31 August 2000, 中国纺织出版社 * |
| 郭合信等: "《纺粘法非织造布》", 30 September 2003, 中国纺织出版社 * |
| 靳向煜: "《中国纺织大学非织造工艺技术研究论文集》", 28 February 1997, 中国纺织大学出版社 * |
| 马建伟等: "《非织造布实用教程》", 31 December 1994 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4599366B2 (en) | A flexible and extensible nonwoven web containing fibers with high melt flow rate | |
| US9693912B2 (en) | Spunbonded nonwoven fabrics | |
| CN101018666B (en) | Stretched elastic nonwovens | |
| CN102021751A (en) | Spun-bonded nonwoven cloth and manufacturing method thereof | |
| JP5922368B2 (en) | Long fiber elastic nonwoven fabric that has both fit and soft touch | |
| KR101194359B1 (en) | Polyester nonwoven fabrics, its preparation method and carpet primary backing substrate | |
| JPS58115161A (en) | Polypropylene spun yarn fleece having low drape coefficient | |
| CN102171033A (en) | Polyolefin-based elastic meltblown fabrics | |
| CN109183281B (en) | PE spun-bonded non-woven fabric and manufacturing method thereof | |
| TWI357943B (en) | High resistant light tufting carrier and process f | |
| CN113474505B (en) | Spunbonded nonwoven fabric, hygienic material, and method for producing spunbonded nonwoven fabric | |
| JP2021518886A (en) | Non-woven fabric of crimp-type composite fiber, its laminate, and its articles | |
| KR20130035414A (en) | Polyester nonwoven fabric and method for manufacturing the same | |
| CN108277579A (en) | A kind of spunbond bicomponent PP/PE hot winds reinforcing non-woven material | |
| KR102256324B1 (en) | Heat-sealable composite fiber and non-woven fabric using the same | |
| JPH1136168A (en) | Nonwoven fabric for sanitary material and medical use | |
| CN101387046A (en) | Biodegradable non-woven fabric and its special melt-blown device | |
| CN103459694B (en) | thermoplastic non-woven fabric | |
| CN110747584A (en) | Production method and application of non-rolling point super-elastic non-woven fabric | |
| KR20090067312A (en) | Polyester long fiber spunbond nonwoven fabric and its manufacturing method | |
| CN110965206B (en) | Polypropylene spun-bonded non-woven fabric and preparation process thereof for improving softness of polypropylene spun-bonded non-woven fabric | |
| JPWO2020075870A1 (en) | Non-woven laminates, stretchable non-woven laminates, textile products, absorbent articles and sanitary masks | |
| CN114144550B (en) | Nonwoven fabric, method for producing same, article comprising same, and sanitary article using same | |
| KR20110001715A (en) | High-strength polypropylene short fibers with high elongation and manufacturing method thereof, nonwoven fabric made therefrom | |
| KR101894726B1 (en) | Elastic Nonwoven Fabric With Excellent Elasticity And Synthetic Leather Using That |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200204 |
|
| RJ01 | Rejection of invention patent application after publication |