CN109183281B - PE spun-bonded non-woven fabric and manufacturing method thereof - Google Patents
PE spun-bonded non-woven fabric and manufacturing method thereof Download PDFInfo
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- CN109183281B CN109183281B CN201811229948.9A CN201811229948A CN109183281B CN 109183281 B CN109183281 B CN 109183281B CN 201811229948 A CN201811229948 A CN 201811229948A CN 109183281 B CN109183281 B CN 109183281B
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- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 58
- 238000004519 manufacturing process Methods 0.000 title abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 40
- 229920001971 elastomer Polymers 0.000 claims abstract description 18
- 239000000806 elastomer Substances 0.000 claims abstract description 18
- 239000000835 fiber Substances 0.000 claims description 86
- 239000012943 hotmelt Substances 0.000 claims description 40
- 238000001816 cooling Methods 0.000 claims description 38
- 238000005098 hot rolling Methods 0.000 claims description 35
- 238000002844 melting Methods 0.000 claims description 18
- 230000008018 melting Effects 0.000 claims description 18
- 238000001914 filtration Methods 0.000 claims description 16
- 238000004804 winding Methods 0.000 claims description 16
- 238000009987 spinning Methods 0.000 claims description 14
- 238000007731 hot pressing Methods 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 7
- 238000001125 extrusion Methods 0.000 claims description 2
- 238000002074 melt spinning Methods 0.000 claims description 2
- 238000005086 pumping Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 9
- 239000000853 adhesive Substances 0.000 abstract description 5
- 230000001070 adhesive effect Effects 0.000 abstract description 5
- 239000002131 composite material Substances 0.000 abstract description 5
- 239000003292 glue Substances 0.000 abstract description 3
- 238000004026 adhesive bonding Methods 0.000 abstract description 2
- 239000012528 membrane Substances 0.000 abstract 4
- 239000004698 Polyethylene Substances 0.000 description 37
- 229920000573 polyethylene Polymers 0.000 description 37
- 239000004743 Polypropylene Substances 0.000 description 11
- 229920001155 polypropylene Polymers 0.000 description 11
- 239000004744 fabric Substances 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- -1 polypropylene Polymers 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000007792 addition Methods 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 231100000956 nontoxicity Toxicity 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 229920004933 Terylene® Polymers 0.000 description 1
- 230000006750 UV protection Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004925 denaturation Methods 0.000 description 1
- 230000036425 denaturation Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000001976 improved effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007794 irritation Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 230000004224 protection Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- D04H3/007—Addition polymers
-
- 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
- D04H3/16—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 filaments produced in association with filament formation, e.g. immediately following extrusion
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The invention relates to a PE spun-bonded non-woven fabric, which is prepared from the following raw materials of a PE raw material and an elastomer according to the proportion of 98%: 2 percent of the components are mixed. The elastomer is selected from the group consisting of dadmax 6020FL and the PE raw material is selected from the group consisting of LL6101 XR. A method of making the PE spunbonded nonwoven is also disclosed. According to the invention, the PE raw material is adopted to replace the conventional PP raw material to produce the base membrane product for the composite breathable membrane, the conventional PP spun-bonded non-woven composite base membrane needs to be bonded by glue, the novel PE spun-bonded non-woven has good bonding property, and can be directly composited with the breathable membrane after being heated without additionally adding a gluing material. On the other hand, the adhesive can also be used for wallpaper without adhesive.
Description
Technical Field
The invention belongs to the technical field of spun-bonded non-woven fabrics, and particularly relates to a PE spun-bonded non-woven fabric and a manufacturing method thereof.
Background
The non-woven fabric is a non-woven fabric which is formed by directly utilizing high polymer slices, short fibers or filaments to form a net through air flow or machinery, then carrying out spunlace, needle punching or hot rolling reinforcement, and finally carrying out after-treatment. Compared with the traditional textile cloth, the textile cloth has the characteristics of short process flow, high production speed, high yield, low cost, wide application and the like. It is widely applied to the fields of medical treatment and health, home decoration, automobile industry, clothing accessories and the like. With the improvement of living standard and the enhancement of safety consciousness of people, the flame retardance of the non-woven fabric becomes the focus of more and more attention of people.
The spun-bonded non-woven fabric is a part of non-woven fabric, main products of the spun-bonded non-woven fabric comprise polypropylene fiber, terylene and polypropylene (PP) non-woven fabric, and the most common and most common applications are non-woven fabric bags, non-woven fabric packages and the like; the spunbonded nonwoven fabric is easy to identify and generally has good two-way fastness, and the roll point of the spunbonded nonwoven fabric is diamond-shaped. The spun-bonded non-woven fabric is formed by extruding and stretching a polymer to form continuous filaments, laying the filaments into a web, and then making the web become the non-woven fabric through self-bonding, thermal bonding, chemical bonding or mechanical reinforcement. The polypropylene fiber has good high temperature resistance, good high temperature resistance (polypropylene fiber can be used in the environment of 150 ℃ for a long time, and polyester fiber can be used in the environment of 260 ℃ for a long time), aging resistance, ultraviolet resistance, high elongation, good stability and air permeability, corrosion resistance, sound insulation, moth resistance and no toxicity.
Among them, the PP fiber is a new generation of environmental protection material which attracts attention because of its characteristics of moisture resistance, air permeability, flexibility, light weight, easy decomposition, no toxicity or irritation, rich color, low price, recycling and the like. However, when the composite base film is used for a base film product of a composite breathable film, the conventional PP spunbonded non-woven composite base film needs to be bonded by glue, an additional adhesive material needs to be added, and the adhesiveness is very poor.
Disclosure of Invention
In order to solve the technical problems in the prior art, the invention provides the PE spunbonded non-woven fabric and the manufacturing method thereof. On the other hand, the adhesive can also be used for wallpaper without adhesive.
The invention is realized by the following technical scheme, and on one hand, the invention provides a PE spunbonded non-woven fabric which is prepared from the following raw materials of PE raw materials and an elastomer according to the proportion of 98%: 2 percent of the components are mixed.
Original PE spunbonded web is pure PE raw materials, this patent adopts PE raw materials and elastomer to mix, can use production of conventional PP production facility, can carry out the production of PE non-woven, the spinning is more even, and because add the elastomer and cause, the more ordinary PE product of product is softer, and adopt higher melt index raw materials, change bonding product in the use, this patent PE product is elasticity PE product, have the comprehensive advantage of PE product and elasticity product concurrently, not only soft but also possess certain elasticity function.
Preferably, the elastomer is dadmax 6020FL, and the PE raw material is LL6101 XR.
6202 elastomer and 6101PE material both have relatively high melt index, the melt index of conventional PE is 2-3g/10min, the melt index of high melt index is about 20g/10min, the melt indexes of the two materials are close, the two materials are easier to mix, the spinning is more uniform in the using process, and defects are not easy to occur.
A method for manufacturing a PE spun-bonded non-woven fabric comprises the following steps:
1) uniformly mixing the PE raw material and the elastomer according to the ratio of 98: 2;
2) vacuum pumping the mixed and stirred raw materials to a screw through a feeding system for extrusion and melting to obtain a hot melt;
3) filtering, metering and dispensing the hot melt;
4) spinning the hot melt which is distributed and metered, and cooling the spun filaments by side cold air to obtain nascent filaments;
5) drafting the as-grown filaments to obtain fibers;
6) dividing and lapping the fibers to form a fiber web;
7) and (3) carrying out hot rolling on the fiber web to obtain the non-woven fabric.
According to the invention, the PE product is manufactured by changing the formula and using PP equipment, and the elastomer is added to make the PE product softer.
Preferably, in the step 2), the melting temperature of the screw is 180-270 ℃. Within this range, the raw material melting effect is better, below which incomplete raw material melting may result, above which raw material denaturation may result, both of which may result in abnormal spinning.
Preferably, in the step 3), the operation temperature for filtering, metering and distributing the hot melt is 230-250 ℃, and the pressure is 5-10 MPa.
Preferably, in the step 4), the hot melt spinning which is well distributed and metered passes through a jet wire with the aperture of 0.3-0.8 mm, and is cooled by a cooling air box, wherein the temperature of the cooling air box is 10-20 ℃, and the speed of cooling air is 0.2-1.5 m/s.
The setting of the ranges is to ensure the normal spinning and the web forming, and the higher or lower spinning and web forming can cause the results of uneven cloth surface, abnormal web forming and the like.
Preferably, in the step 5), the as-spun filaments are subjected to air flow drafting by a horn mouth of a slit type drafting device in an air flow dividing mode, and the air flow drafting speed is 2000 m/H-5000 m/H. Obtaining the fiber with the denier of 1.8-2.2, and orderly arranging molecular chains of the drafted as-spun filament to generate strong force to form the fiber.
The draft speed of the air flow is selected to be higher or lower than the range of 2000m/H to 5000m/H, which can result in uneven cloth surface and the like.
Preferably, in step 6), in order to form a web normally, the fibers are randomly laid on the web forming curtain, a suction fan is arranged below the web forming curtain to perform downward suction, the fibers are fixed on the web forming curtain, and prepressing is performed through a prepressing roller to form a web.
Preferably, in step 7), in order to hot-roll the product into a layer, the fiber web passes through a net forming curtain and is conveyed to a hot rolling mill under the driving of a net curtain roller, the non-woven fabric is obtained after the hot-pressing bonding effect of an upper roller and a lower roller of the hot rolling mill, and the non-woven fabric is conveyed to an after-finishing system through an upper winding roller and a lower winding roller.
Preferably, in the step 7), the temperature of the hot rolling mill is 130-150 ℃, and the linear pressure is 30-70 MPa. The temperature and pressure hot rolling effect is optimal, and the indexes of the fiber web such as the fiber web hot rolling, looseness, fluffiness, wear resistance and the like are poor when the temperature and pressure are lower than the temperature or pressure; if the temperature is too high or the pressure is too high, the non-woven fabric is rolled thoroughly, rolled and rotten, and the cloth surface is hard, crisp and low in strength. The invention has the beneficial effects that:
(1) the Polyethylene (PE) non-woven fabric is a novel non-woven fabric, has the characteristics of no toxicity, skin friendliness, good thermal bonding property, soft hand feeling and the like, is particularly suitable for the field of medical treatment and hygiene, is an excellent material for products such as operating gowns, protective clothing, sanitary napkins, paper diapers and the like, and can be compounded with other materials to be applied to the fields of automotive interiors, waterproof materials and the like.
(2) The breathable film + the non-woven fabric are compounded, the two layers of structures are bonded through the glue, the developed PE non-woven fabric is good in heat bonding performance, and the breathable film is compounded through heat bonding without gluing.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The application of the principles of the present invention will now be described in further detail with reference to specific embodiments.
Example 1, PE stock LL6101XR, elastomer wafama 6020FL in 98%: mixing at a ratio of 2%
The preparation method of the PE spun-bonded non-woven fabric comprises the following steps:
1. PE raw material LL6101XR and elastomer wafama 6020FL were mixed in a ratio of 98%: 2 percent of the raw materials are uniformly mixed;
2. extruding and melting the mixed and stirred raw materials to a screw through a feeding system (vacuum suction) to obtain a hot melt (the melting temperature of the screw is 270 ℃);
3. filtering, metering and distributing the hot melt at a certain temperature and under a certain pressure (the operation temperature of the hot melt for filtering, metering and distributing is 250 ℃, and the pressure is 10 MPa);
4. 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 1.5m/s, and the primary filament is obtained by cooling the yarn);
5. 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 2.2 denier, and meanwhile, molecular chains of the as-spun filaments subjected to drafting are arranged orderly to generate strong force to form the fibers);
6. dividing and lapping the fibers to form a fiber web (the fibers are randomly paved on a net forming curtain, an exhaust fan is arranged below the net forming curtain to perform downward air suction, the fibers are fixed on the net forming curtain, and prepressing is performed through a prepressing roller to form the fiber web);
7. and (2) carrying out hot rolling on the fiber web to obtain the non-woven fabric (the fiber web is conveyed to a hot rolling mill through a net forming curtain under the drive of a net curtain roller, and is subjected to hot-pressing bonding action of an upper roller and a lower roller of the hot rolling mill to obtain the non-woven fabric, wherein the temperature of the hot rolling mill is 150 ℃, the linear pressure is 70MPa, and the non-woven fabric is conveyed to a post-finishing system through an upper winding roller and a lower winding roller).
56.5g and 34g of the obtained product are respectively taken for carrying out multiple times of physical property tests, and the data are more stable after the multiple times of tests; the test results are shown in tables 1 and 2 below, from which it can be seen that: the comparison of the test data of the physical properties of the product of the invention of 56.5g and the product of the invention of 34g shows that the gram weight affects the physical properties, for example, the gram weight is great, the strength is great, and the product is not easy to break.
Table 156.5 g weight test data:
table 234 g weight test data:
example 2, PE stock LL6101XR, elastomer wafama 6020FL in 98%: mixing at a ratio of 2%
The preparation method of the PE spun-bonded non-woven fabric comprises the following steps:
1. PE raw material LL6101XR and elastomer wafama 6020FL were mixed in a ratio of 98%: 2 percent of the raw materials are uniformly mixed;
2. extruding and melting the mixed and stirred raw materials to a screw through a feeding system (vacuum suction) to obtain a hot melt (the melting temperature of the screw is 180 ℃);
3. filtering, metering and distributing the hot melt at a certain temperature and under a certain pressure (the operation temperature of the hot melt for filtering, metering and distributing is 230 ℃, and the pressure is 5 MPa);
4. 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 0.3mm, and is cooled by a cooling air box, the temperature of the cooling air box is 10 ℃, the speed of the cooling air is 0.2m/s, and the primary filament is obtained by cooling the yarn);
5. 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 1.8 denier, and meanwhile, molecular chains of the as-spun filaments subjected to drafting are arranged orderly to generate strong force to form the fibers);
6. dividing and lapping the fibers to form a fiber web (the fibers are randomly paved on a net forming curtain, an exhaust fan is arranged below the net forming curtain to perform downward air suction, the fibers are fixed on the net forming curtain, and prepressing is performed through a prepressing roller to form the fiber web);
7. and (2) carrying out hot rolling on the fiber web to obtain a non-woven fabric (the fiber web passes through a net forming curtain and is conveyed to a hot rolling mill under the drive of a net curtain roller, the non-woven fabric is obtained through the hot-pressing bonding action of an upper roller and a lower roller of the hot rolling mill, the temperature of the hot rolling mill is 130 ℃, the linear pressure is 30MPa, and the non-woven fabric is conveyed to a post-finishing system through an upper winding roller and a lower winding roller).
Comparative example 1: common PP raw material (without any additive)
The preparation method of the PE spun-bonded non-woven fabric comprises the following steps:
1. mixing common PP raw material (without any additive) uniformly;
2. extruding and melting the mixed and stirred raw materials to a screw through a feeding system (vacuum suction) to obtain a hot melt (the melting temperature of the screw is 270 ℃);
3. filtering, metering and distributing the hot melt at a certain temperature and under a certain pressure (the operation temperature of the hot melt for filtering, metering and distributing is 250 ℃, and the pressure is 10 MPa);
4. 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 1.5m/s, and the primary filament is obtained by cooling the yarn);
5. 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 2.2 denier, and meanwhile, molecular chains of the as-spun filaments subjected to drafting are arranged orderly to generate strong force to form the fibers);
6. dividing and lapping the fibers to form a fiber web (the fibers are randomly paved on a net forming curtain, an exhaust fan is arranged below the net forming curtain to perform downward air suction, the fibers are fixed on the net forming curtain, and prepressing is performed through a prepressing roller to form the fiber web);
7. and (2) carrying out hot rolling on the fiber web to obtain the non-woven fabric (the fiber web is conveyed to a hot rolling mill through a net forming curtain under the drive of a net curtain roller, and is subjected to hot-pressing bonding action of an upper roller and a lower roller of the hot rolling mill to obtain the non-woven fabric, wherein the temperature of the hot rolling mill is 150 ℃, the linear pressure is 70MPa, and the non-woven fabric is conveyed to a post-finishing system through an upper winding roller and a lower winding roller).
Comparative example 2: ordinary pp stock, 2.0% Vm6202 elastomer addition
The preparation method of the PE spun-bonded non-woven fabric comprises the following steps:
1. adding 2.0% of Vm6202 elastomer into a common pp raw material, and uniformly mixing;
2. extruding and melting the mixed and stirred raw materials to a screw through a feeding system (vacuum suction) to obtain a hot melt (the melting temperature of the screw is 270 ℃);
3. filtering, metering and distributing the hot melt at a certain temperature and under a certain pressure (the operation temperature of the hot melt for filtering, metering and distributing is 250 ℃, and the pressure is 10 MPa);
4. 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 1.5m/s, and the primary filament is obtained by cooling the yarn);
5. 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 2.2 denier, and meanwhile, molecular chains of the as-spun filaments subjected to drafting are arranged orderly to generate strong force to form the fibers);
6. dividing and lapping the fibers to form a fiber web (the fibers are randomly paved on a net forming curtain, an exhaust fan is arranged below the net forming curtain to perform downward air suction, the fibers are fixed on the net forming curtain, and prepressing is performed through a prepressing roller to form the fiber web);
7. and (2) carrying out hot rolling on the fiber web to obtain the non-woven fabric (the fiber web is conveyed to a hot rolling mill through a net forming curtain under the drive of a net curtain roller, and is subjected to hot-pressing bonding action of an upper roller and a lower roller of the hot rolling mill to obtain the non-woven fabric, wherein the temperature of the hot rolling mill is 150 ℃, the linear pressure is 70MPa, and the non-woven fabric is conveyed to a post-finishing system through an upper winding roller and a lower winding roller).
Comparative example 3: common pp raw material, 50% LL6101 PE raw material is added
The preparation method of the PE spun-bonded non-woven fabric comprises the following steps:
1. adding 50% LL6101 PE raw material into common pp raw material and mixing evenly;
2. extruding and melting the mixed and stirred raw materials to a screw through a feeding system (vacuum suction) to obtain a hot melt (the melting temperature of the screw is 270 ℃);
3. filtering, metering and distributing the hot melt at a certain temperature and under a certain pressure (the operation temperature of the hot melt for filtering, metering and distributing is 250 ℃, and the pressure is 10 MPa);
4. 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 1.5m/s, and the primary filament is obtained by cooling the yarn);
5. 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 2.2 denier, and meanwhile, molecular chains of the as-spun filaments subjected to drafting are arranged orderly to generate strong force to form the fibers);
6. dividing and lapping the fibers to form a fiber web (the fibers are randomly paved on a net forming curtain, an exhaust fan is arranged below the net forming curtain to perform downward air suction, the fibers are fixed on the net forming curtain, and prepressing is performed through a prepressing roller to form the fiber web);
7. and (2) carrying out hot rolling on the fiber web to obtain the non-woven fabric (the fiber web is conveyed to a hot rolling mill through a net forming curtain under the drive of a net curtain roller, and is subjected to hot-pressing bonding action of an upper roller and a lower roller of the hot rolling mill to obtain the non-woven fabric, wherein the temperature of the hot rolling mill is 150 ℃, the linear pressure is 70MPa, and the non-woven fabric is conveyed to a post-finishing system through an upper winding roller and a lower winding roller).
Comparative example 4: common pp raw material with addition of 50% LL6101+ 2.0% Vm6202
The preparation method of the PE spun-bonded non-woven fabric comprises the following steps:
1. adding 50% LL6101+ 2.0% Vm6202 into the common pp raw material and mixing evenly;
2. extruding and melting the mixed and stirred raw materials to a screw through a feeding system (vacuum suction) to obtain a hot melt (the melting temperature of the screw is 270 ℃);
3. filtering, metering and distributing the hot melt at a certain temperature and under a certain pressure (the operation temperature of the hot melt for filtering, metering and distributing is 250 ℃, and the pressure is 10 MPa);
4. 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 1.5m/s, and the primary filament is obtained by cooling the yarn);
5. 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 2.2 denier, and meanwhile, molecular chains of the as-spun filaments subjected to drafting are arranged orderly to generate strong force to form the fibers);
6. dividing and lapping the fibers to form a fiber web (the fibers are randomly paved on a net forming curtain, an exhaust fan is arranged below the net forming curtain to perform downward air suction, the fibers are fixed on the net forming curtain, and prepressing is performed through a prepressing roller to form the fiber web);
7. and (2) carrying out hot rolling on the fiber web to obtain the non-woven fabric (the fiber web is conveyed to a hot rolling mill through a net forming curtain under the drive of a net curtain roller, and is subjected to hot-pressing bonding action of an upper roller and a lower roller of the hot rolling mill to obtain the non-woven fabric, wherein the temperature of the hot rolling mill is 150 ℃, the linear pressure is 70MPa, and the non-woven fabric is conveyed to a post-finishing system through an upper winding roller and a lower winding roller).
TABLE 3 comparison table of the improved effect of PE cloth
As can be seen from the above table, the PE spunbonded nonwoven produced by the embodiment 1 of the invention has normal spinning, good elasticity, fine fiber fineness of 4.0D, product thickness of 0.37mm, two-way elasticity, CD elasticity of about 330% and MD elasticity of about 300%, and has better effect than the PE nonwoven prepared by the comparative examples 1-4.
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 (1)
1. A PE spunbonded nonwoven fabric, which is characterized in that: the raw materials are PE raw materials and an elastomer according to the proportion of 98%: 2 percent of the components are mixed; the elastomer is selected from the widama 6020FL, and the PE raw material is selected from the LL6101 XR;
the PE spunbonded nonwoven fabric is prepared by the following steps:
1) uniformly mixing the PE raw material and the elastomer according to the ratio of 98: 2;
2) vacuum pumping the mixed and stirred raw materials to a screw through a feeding system for extrusion and melting to obtain a hot melt; the melting temperature of the screw is 180-270 ℃;
3) filtering, metering and dispensing the hot melt; the operation temperature for filtering, metering and distributing the hot melt is 230-250 ℃, and the pressure is 5-10 MPa;
4) spinning the hot melt which is distributed and metered, and cooling the spun filaments by side cold air to obtain nascent filaments; the hot melt spinning which is well distributed and measured is sprayed out through the holes with the diameter of 0.3-0.8 mm, and is cooled by a cooling air box, wherein the temperature of the cooling air box is 10-20 ℃, and the cooling air speed is 0.2-1.5 m/s;
5) drafting the as-grown filaments to obtain fibers; the primary filament is subjected to air flow drafting by a horn mouth of a slit type drafting device in an air flow dividing mode, and the air flow drafting speed is 2000 m/min-5000 m/min;
6) dividing and lapping the fibers to form a fiber web; laying fibers on a net forming curtain in a messy manner, arranging an exhaust fan below the net forming curtain to perform downward air suction, fixing the fibers on the net forming curtain, and prepressing through a prepressing roller to form a fiber web;
7) obtaining non-woven fabric after the fiber web is subjected to hot rolling; the hot rolling temperature is 130-150 ℃, and the linear pressure is 30-70 MPa; the fiber web is transmitted to a hot rolling mill through a net curtain under the drive of a net curtain roller, the non-woven fabric is obtained after the hot-pressing bonding action of an upper roller and a lower roller of the hot rolling mill, and the non-woven fabric is transmitted to an after-finishing system through an upper winding roller and a lower winding roller.
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| CN111005159A (en) * | 2019-12-30 | 2020-04-14 | 山东恒鹏卫生用品有限公司 | Non-woven fabric applied to paper diaper core wrapping and production method thereof |
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| CN112442793A (en) * | 2020-12-01 | 2021-03-05 | 山东恒鹏卫生用品有限公司 | Production method of non-roll-point non-woven fabric material replacing breathable film material |
| CN113308801A (en) * | 2021-06-19 | 2021-08-27 | 江门市舒而美医疗用品有限公司 | Production process capable of reducing fineness of PE (polyethylene) fibers |
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Denomination of invention: The invention relates to a PE spunbonded non-woven fabric and a manufacturing method thereof Effective date of registration: 20220331 Granted publication date: 20210817 Pledgee: Guangrao County sub branch of Postal Savings Bank of China Ltd. Pledgor: SHANDONG HENGPENG HYGIENIC PRODUCTS CO.,LTD. Registration number: Y2022980003570 |
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