CN110616509A - Novel spun-bonded spunlace non-woven fabric for spring wrapping cloth and preparation method thereof - Google Patents
Novel spun-bonded spunlace non-woven fabric for spring wrapping cloth and preparation method thereof Download PDFInfo
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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
- D04H18/00—Needling machines
- D04H18/04—Needling machines with water jets
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/10—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 yarns or filaments made mechanically
- D04H3/11—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 yarns or filaments made mechanically by fluid jet
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06H—MARKING, INSPECTING, SEAMING OR SEVERING TEXTILE MATERIALS
- D06H3/00—Inspecting textile materials
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- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
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- Nonwoven Fabrics (AREA)
Abstract
The invention provides a preparation method of a novel spun-bonded spunlace non-woven fabric for spring wrapping cloth, which comprises prewetting, first tentering, first spunlacing, second tentering and second spunlacing; the invention also provides a novel spun-bonded spunlace non-woven fabric for spring wrapping cloth, and the gram weight of the novel spun-bonded spunlace non-woven fabric is 80 g/m2Meanwhile, the transverse fracture strength reaches 400-500N; the longitudinal tearing strength reaches 120-140N, the transverse tearing strength reaches 100-120N, and the longitudinal breaking strength reaches 370-400N; longitudinal 45N elongation of 2-5%, transverse 45N elongation of 1-4%; the product has high strength, deformation resistance, excellent uniformity and low friction noise, can resist larger external force damage, simultaneously improves the tearing strength on the premise of keeping lower elongation at break, has larger tearing strength than spun-bonded cloth with the same gram weight, and is more suitable for being used at homeHas industrial application.
Description
Technical Field
The invention relates to a novel spun-bonded spunlace non-woven fabric for spring wrapping cloth and a preparation method thereof, relates to the field of furniture, sofa and mattress industries, and particularly relates to the spring wrapping cloth of a mattress.
Background
The spring wrapping cloth is non-woven fabric wrapped on the outer layer of the cylindrical spring made of the high-carbon steel wire in the mattress, and aims to keep the elasticity of the spring durable, ensure that the springs are not interfered with each other, prevent redundant vibration from affecting other people when the spring is turned in a sleeping state, effectively prevent friction between the springs and prolong the service life.
Chinese patent with publication number CN109881420A provides a novel tentering and heat setting process of spun-bonded spunlace non-woven fabric, which comprises the steps of extrusion melting, drafting, lapping, spunlacing and tentering heat setting, wherein the spun-bonded spunlace gray fabric is tentered and heat set through a plurality of tentering areas, and the width expansion multiple of the obtained gray fabric is 1.5-2 times; after the spun-bonded spunlace gray fabric is subjected to the tentering and heat setting process, the gram weight is reduced by 25-50%; after the spun-bonded spunlace grey cloth is subjected to the tentering and heat setting process, the thickness is reduced by 10-20%. However, since the hydro-entangling is directly performed, the hydro-entangling in the initial stage may cause excessive damage to the fibers in the web, the subsequent tentering step may limit the expansion of the transverse width, and affect the breaking strength, and at the same time, the uniformity of the fabric surface may not be ensured, and the tentering may be performed under the heating condition, which may result in high energy consumption.
Chinese patent No. CN2007100536409 provides a preparation process of spun-bonded spunlace nonwoven fabric, which is prepared by slicing any one of PET, PE, PA, PP and other high polymers, and carrying out conveying, drying, spinning, air flow drafting, lapping, spunlacing, drying and automatic winding. The patent only describes the process route of the traditional spun-bonded hydro-entangled, and does not provide an improvement solution aiming at the problem of large elongation deformation, thereby limiting the application of the spun-bonded hydro-entangled fiber in the furniture industry.
Most of spring wrapping cloth materials applied to the furniture mattress industry at the present stage are polypropylene spun-bonded non-woven fabrics, and the materials have obvious defects when being used for spring wrapping cloth, such as: low breaking strength, low tearing strength, poor wear resistance, short service life, hard hand feeling and easy abnormal sound generation.
The existing spunlace spun-bonded non-woven fabric has the advantages of comfortable hand feeling, softness, high strength and the like, but when the spun-bonded non-woven fabric is used as a spring wrapping fabric, the following problems generally exist: the product has large deformation, fluffy cloth cover, even gram weight, poor wear resistance, large friction noise, low strength and low capability of resisting external force damage. And cannot meet the basic requirements of the application of the spring wrapping cloth. A spun-bonded spun-laced non-woven fabric prepared by a novel spun-bonded spun-laced process non-woven fabric forming technology is provided.
Disclosure of Invention
Aiming at the defects of the market products, the invention provides a novel spun-bonded spunlace non-woven fabric with high strength, deformation resistance, excellent uniformity and low friction noise and a preparation method thereof for solving the technical problems and the defects of the prior art so as to realize the following purposes:
(1) the novel spun-bonded spunlace non-woven fabric for the spring wrapping cloth, which is obtained by the invention, has high strength, and the breaking strength and the tearing strength can be improved simultaneously, so that larger external force damage can be resisted;
(2) the novel spun-bonded spunlace non-woven fabric for the spring wrapping cloth, which is obtained by the invention, has excellent uniformity and low friction noise;
(3) the novel spun-bonded spunlace non-woven fabric for the spring wrapping cloth is deformation-resistant, has small elongation at break of 45N, large initial modulus and excellent deformation resistance;
(4) the novel spun-bonded spunlace non-woven fabric for the spring wrapping cloth has the advantages that the tearing strength can be improved simultaneously on the premise of keeping lower elongation at break, the tearing strength is higher than that of spun-bonded cloth with the same gram weight, and the novel spun-bonded spunlace non-woven fabric is more suitable for being applied to furniture industry.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
the preparation method of the novel spun-bonded spunlace non-woven fabric for the spring wrapping cloth comprises prewetting, first tentering, first spunlacing, second tentering and second spunlacing.
The following is a further improvement of the above technical solution:
a novel spun-bonded spunlace non-woven fabric for spring wrapping cloth is characterized in that,
the novel spun-bonded spunlace non-woven fabric for the spring wrapping cloth,the gram weight is 80 g/m2When the material is used, the transverse fracture strength reaches 400N; the longitudinal tearing strength reaches 120-140N, and the transverse tearing strength reaches 100-120N.
The novel spun-bonded spunlace non-woven fabric for the spring wrapping cloth has the gram weight of 80 g/m2Meanwhile, the longitudinal fracture strength reaches 370-400N; the elongation at 45N in the machine direction is 1-5%, and the elongation at 45N in the transverse direction is 1-3%.
The invention also provides a preparation method of the novel spun-bonded spunlace non-woven fabric for the spring wrapping cloth, which comprises the steps of extrusion melting, drafting, lapping, prewetting, first tentering, first spunlacing, second tentering, second spunlacing and heat setting.
The first spunlace has the working width of 4-5m, the spunlace needle plate on the spunlace head is a double-row needle, the diameter of the double-row needle hole is 0.1-0.3mm, the hole pitch is 0.5-2mm, and the hole pitch is 1-3 mm.
The pressure of the first water jet is 45-55 MPa, and the pressure of the water jet head is 55-65 MPa.
The first tentering with tentering multiple of 35-45%;
and the second tentering with tentering multiple of 25-35%.
The second water jet has working width of 5.5-6.5m, the water jet needle plate on the water jet head is a double-row needle, the diameter of the double-row needle hole is 0.05-0.2mm, the hole spacing is 0.5-1.5mm, and the hole spacing is 1-2 mm.
And the pressure of the second water jet is 45-55 MPa, and the pressure of the water jet heads 3 and 4 is 55-65MPa respectively.
The prewetting has a working width of 2-4m and a pressure of 15-25 Mpa.
The novel spun-bonded spunlace non-woven fabric for the spring wrapping cloth has the gram weight of 80 g/m2Meanwhile, the longitudinal fracture strength reaches 350-400N; the elongation at 45N in the machine direction is 2-5% and the elongation at 45N in the transverse direction is 1-4%.
The working width of the first spunlace is 4.5m, a spunlace needle plate on a spunlace head is a double-row needle, the diameter of the double-row needle hole is 0.1mm, the hole pitch is 1mm, and the hole pitch is 1.5 mm; the pressures of the water stabs 1 and 2 are respectively 50 and 60 Mpa.
And the first tentering, wherein the tentering multiple is 40%, and the temperature is normal temperature.
And the second tentering, the tentering multiple is 30%, and the temperature is normal temperature.
The working width of the second spunlace is 5.9m, the spunlace needle plate on the spunlace head is a double-row needle, the diameter of the double-row needle hole is 0.1mm, the hole pitch is 1mm, and the hole pitch is 1.5 mm; the pressure of the water stabs heads 3 and 4 is respectively 50 and 60 Mpa.
The prewetting is carried out, the working width is 3.2m, and the pressure of the water stabs head 1 is 20Mpa respectively.
The novel spun-bonded spunlaced non-woven fabric obtained by the method has uniform gram weight and positive and negative deviation less than 2g/m2。
In order to obtain the spun-bonded spunlace non-woven fabric with high strength and low elongation, the applicant adds 2 tentering machines between 3 spunlacing machines, because the fibers are subjected to spunlace pressure and drafting in the spunlace process, longitudinal fiber elongation is caused, the fibers arranged transversely move longitudinally, more fibers are arranged longitudinally, and thus, the phenomena of overlarge longitudinal elongation and uneven width are caused.
The 2 tentering frames are additionally arranged between the 3 spunlacing machines for tentering and finishing, the curled fibers arranged along the longitudinal direction in the fiber web can be gradually straightened towards the transverse direction, partial internal stress is eliminated, the strength is improved, the longitudinal breaking elongation of the non-woven fabric is reduced, the internal stress of the fibers in the fiber web can be gradually eliminated by clamping the two tentering frames between the spunlacing machines, the fibers cannot be damaged, heating is not needed in the tentering process, and the energy consumption is reduced, as shown in figure 1.
By adopting the technology, the invention has the beneficial effects that:
(1) the novel spun-bonded spunlace non-woven fabric for the spring wrapping cloth, which is obtained by the invention, has high strength, and the breaking strength and the tearing strength can be improved simultaneously, so that larger external force damage can be resisted; the transverse breaking strength reaches 400N, and the longitudinal breaking strength reaches 370N; the longitudinal tearing strength reaches 120-140N, and the transverse tearing strength reaches 100-120N;
(2) the novel spun-bonded spunlace non-woven fabric for the spring wrapping cloth, which is obtained by the invention, has excellent uniformity and gram weight (per square)Rice weight) is uniform, and the positive and negative deviation is less than 2g/m2The cloth surface is uniform and smooth without pits; the friction noise is low;
(3) the novel spun-bonded spunlace non-woven fabric for the spring wrapping cloth is deformation-resistant, has small elongation at break of 45N, large initial modulus and excellent deformation resistance; 45N elongation: longitudinal direction is 4.13%, and transverse direction is 2.37%;
(4) the novel spun-bonded spunlace non-woven fabric for the spring wrapping cloth has the advantages that the tearing strength can be improved simultaneously on the premise of keeping lower elongation at break, the tearing strength is higher than that of spun-bonded cloth with the same gram weight, and the novel spun-bonded spunlace non-woven fabric is more suitable for being applied to furniture industry.
Drawings
FIG. 1 is a comparison of tentering before and after in example 1 of the present invention;
FIG. 2 is a schematic view showing the positional relationship between a drum and a tenter in example 1 of the present invention;
FIG. 3 is a schematic connection diagram of the apparatus used in the method of producing the novel spun-bonded spunlaced nonwoven fabric of example 1 of the present invention;
FIG. 4 is a distribution diagram of the width and the grammage of the novel spun-bonded spunlace nonwoven fabric of example 1 of the invention.
Detailed Description
The following description of the preferred embodiments of the present invention is provided for the purpose of illustration and description, and is in no way intended to limit the invention.
Example 1 preparation method of novel spun-bonded spunlace nonwoven fabric for spring wrapping
The invention discloses a preparation method of a novel spun-bonded spunlace non-woven fabric for spring wrapping cloth, which comprises the following steps:
step 1, extrusion melting
Firstly, conveying a high polymer PP slice with MFR of 30-40g/min, drying, then feeding into a screw extruder, extruding and melting to obtain a melt trickle.
The screw in the screw extruder is provided with six temperature zones, wherein the temperature of a first heating zone is 200-230 ℃, the temperature of a second heating zone is 200-230 ℃, the temperature of a third heating zone is 200-250 ℃, the temperature of a fourth heating zone is 210-250 ℃, the temperature of a fifth heating zone is 220-250 ℃, and the temperature of a sixth heating zone is 230-250 ℃; the flange temperature connecting the zones was 240 ℃.
Step 2, drawing
Cooling the melt fine stream by a side air blast with a certain temperature; the pressure of the bellows is 3300 Pa, and the rotating speed of the fan is 75 percent, thus obtaining the fiber.
The certain temperature specifically comprises: the temperature of the upper cold air is 21 +/-2 ℃, and in the embodiment, the temperature of the upper cold air is 20 ℃ and the temperature of the lower cold air is 20 ℃.
Step 3, lapping
After being drafted by cooling air, the fibers are uniformly laid on a lapping machine in an S-shaped track to form a fiber web.
Step 4, prewetting
Prior to the hydroentanglement process, the carded web is previously sprayed with a portion of water at a water temperature of 23. + -. 2 ℃ so that the web to be subjected to the hydroentanglement process previously absorbs a portion of the water, is compacted and then fed to a tenter device for processing. The purpose of this is to make the web obtain strong force by entanglement, to facilitate the subsequent tentering process, and to facilitate the subsequent spunlace to sufficiently absorb the energy of the hydro-acupuncture, to enhance the spunlace effect, and to improve the production efficiency. The pre-wetting mode is a double-net clamping mode, the working width of a net curtain is 3.2m, and the pressure of a pre-wetting water stabs head is 20 Mpa.
Step 5, first tentering
The fiber web output by the lapping machine enters a tenter 1 area (tenter 1) after being pre-wetted, the tentering multiple is 40%, and the temperature is normal temperature.
Step 6, first water jetting
The fiber web after tentering by the tentering machine 1 enters the rotating drum 1 for water punching, and the entanglement degree of the fibers is improved. The working width of the rotary drum 1 is 4.5m, the spunlace needle plate on the spunlace head is a double-row needle, the diameter of the double-row needle hole is 0.1mm, the hole spacing is 1mm, and the hole row spacing is 1.5 mm. The pressures of the water stabs 1 and 2 are respectively 50 and 60 Mpa.
Step 7, second tentering
The web spun out of drum 1 was passed into tenter 2 zone (tenter 2) at a tenter magnification of 30% and at room temperature.
Step 8, secondary spunlace
The fiber web after tentering by the tentering machine 2 enters the rotating drum 2 for water punching, and the entanglement degree of the fibers is improved. The working width of the rotary drum 2 is 5.9m, the spunlace needle plate on the spunlace head is a double-row needle, the diameter of the double-row needle hole is 0.1mm, the hole spacing is 1mm, and the hole row spacing is 1.5 mm. The pressure of the water stabs heads 3 and 4 is respectively 50 and 60 Mpa.
Step 9, Heat setting
Finally, the extruded double-length fibers on the surface are melted at high temperature through the heat treatment of a calender, so that the friction noise of the cloth surface is reduced, and the surface temperature of the compression roller is 150-160 ℃.
Example 2A novel spun-bonded spunlace nonwoven fabric for spring packing
(1) The novel spun-bonded spunlace non-woven fabric obtained by the preparation method of the novel spun-bonded spunlace non-woven fabric for spring wrapping cloth has uniform gram weight (weight per square meter) and positive and negative deviation less than 2g/m2The cloth surface is uniform and smooth without pits. The grammage distribution in the width direction is shown in FIG. 4 (unit: g/m)2）。
(2) Compared with the product with the same gram weight, the novel spun-bonded spunlace non-woven fabric obtained by the preparation method of the novel spun-bonded spunlace non-woven fabric for spring wrapping cloth has the following advantages: the strength is high, and the larger external force damage can be resisted; the elongation at break of 45N is small, the initial modulus is large, and the deformation resistance is excellent; meanwhile, the tearing strength is larger than that of spun-bonded cloth with the same gram weight, and the spun-bonded cloth is more suitable for being applied in the furniture industry. The specific test results are shown in the following table:
from the above table, it can be seen that:
(1) the novel spun-bonded spunlace non-woven fabric for the spring wrapping cloth, which is obtained by the invention, has high strength, and the breaking strength and the tearing strength can be improved simultaneously, so that larger external force damage can be resisted; the transverse breaking strength reaches 400N, and the longitudinal breaking strength reaches 370N; the longitudinal tearing strength reaches 140N, and the transverse tearing strength reaches 120N;
(2) the novel spun-bonded spunlace non-woven fabric for the spring wrapping cloth, which is obtained by the invention, has excellent uniformity, uniform gram weight (weight per square meter) and positive and negative deviation less than 2g/m2The cloth surface is uniform and smooth without pits; the friction noise is low;
(3) the novel spun-bonded spunlace non-woven fabric for the spring wrapping cloth is deformation-resistant, has small elongation at break of 45N, large initial modulus and excellent deformation resistance; 45N elongation: longitudinal direction is 4.13%, and transverse direction is 2.37%;
(4) the novel spun-bonded spunlace non-woven fabric for the spring wrapping cloth has the advantages that the tearing strength can be improved simultaneously on the premise of keeping lower elongation at break, the tearing strength is higher than that of spun-bonded cloth with the same gram weight, and the novel spun-bonded spunlace non-woven fabric is more suitable for being applied to furniture industry.
Unless otherwise specified, the percentages used in the present invention are percentages by mass, and the proportions are proportions by mass.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A preparation method of novel spun-bonded spunlace non-woven fabric for spring wrapping cloth is characterized in that,
the preparation method of the novel spun-bonded spunlace non-woven fabric for the spring wrapping cloth comprises prewetting, primary tentering, primary spunlacing, secondary tentering and secondary spunlacing.
2. The preparation method of the novel spun-bonded spunlace nonwoven fabric for the spring package cloth according to claim 1,
the first spunlace has the working width of 4-5m, the spunlace needle plate on the spunlace head is a double-row needle, the diameter of the double-row needle hole is 0.1-0.3mm, the hole pitch is 0.5-2mm, and the hole pitch is 1-3 mm.
3. The preparation method of the novel spun-bonded spunlace nonwoven fabric for the spring package cloth according to claim 1,
the pressure of the first water jet is 45-55 MPa, and the pressure of the water jet head is 55-65 MPa.
4. The preparation method of the novel spun-bonded spunlace nonwoven fabric for the spring package cloth according to claim 1,
the first tentering with tentering multiple of 35-45%;
and the second tentering with tentering multiple of 25-35%.
5. The preparation method of the novel spun-bonded spunlace nonwoven fabric for the spring package cloth according to claim 1,
the second water jet has working width of 5.5-6.5m, the water jet needle plate on the water jet head is a double-row needle, the diameter of the double-row needle hole is 0.05-0.2mm, the hole spacing is 0.5-1.5mm, and the hole spacing is 1-2 mm.
6. The preparation method of the novel spun-bonded spunlace nonwoven fabric for the spring package cloth according to claim 1,
and the pressure of the second water jet is 45-55 MPa, and the pressure of the water jet heads 3 and 4 is 55-65MPa respectively.
7. The preparation method of the novel spun-bonded spunlace nonwoven fabric for the spring package cloth according to claim 1,
the prewetting has a working width of 2-4m and a pressure of 15-25 Mpa.
8. A novel spun-bonded spunlace non-woven fabric for spring wrapping cloth is characterized in that,
the novel spun-bonded spunlace non-woven fabric for the spring wrapping cloth has even gram weight and less positive and negative deviation than 2g/m2。
9. The novel spun-bonded spunlace nonwoven fabric for spring packing cloth according to claim 8,
the novel spun-bonded spunlace non-woven fabric for the spring wrapping cloth has the gram weight of 80 g/m2When the material is used, the transverse fracture strength reaches 400N; the longitudinal tearing strength reaches 120-140N, and the transverse tearing strength reaches 100-120N.
10. The novel spun-bonded spunlace nonwoven fabric for spring packing cloth according to claim 8,
the novel spun-bonded spunlace non-woven fabric for the spring wrapping cloth has the gram weight of 80 g/m2Meanwhile, the longitudinal fracture strength reaches 370-400N; the elongation at 45N in the machine direction is 2-5% and the elongation at 45N in the transverse direction is 1-4%.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112726023A (en) * | 2021-01-07 | 2021-04-30 | 肇庆天乙非织造材料有限公司 | Preparation method of high-strength spunlace non-woven fabric |
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| CN112726023B (en) * | 2021-01-07 | 2022-09-06 | 俊富非织造材料(肇庆)有限公司 | Preparation method of high-strength spunlace non-woven fabric |
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