CN110965206B - Polypropylene spun-bonded non-woven fabric and preparation process thereof for improving softness of polypropylene spun-bonded non-woven fabric - Google Patents
Polypropylene spun-bonded non-woven fabric and preparation process thereof for improving softness of polypropylene spun-bonded non-woven fabric Download PDFInfo
- Publication number
- CN110965206B CN110965206B CN201811158466.9A CN201811158466A CN110965206B CN 110965206 B CN110965206 B CN 110965206B CN 201811158466 A CN201811158466 A CN 201811158466A CN 110965206 B CN110965206 B CN 110965206B
- Authority
- CN
- China
- Prior art keywords
- melt
- woven fabric
- hot rolling
- bonded non
- polypropylene spun
- 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.)
- Active
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
- D04H3/007—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
- D04H3/14—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)
- Nonwoven Fabrics (AREA)
Abstract
The invention provides a polypropylene spun-bonded non-woven fabric, which has the softness of 3.41-3.43, the MD strength of 24.20-24.22N/5cm and the CD strength of 10.12-10.93N/5 cm; the invention also provides a preparation process for improving the softness of the polypropylene spun-bonded non-woven fabric, which comprises pretreatment, die head spinning and hot rolling treatment; the hot rolling treatment is carried out, wherein the mesh belt speed is 630-645m/min, and the hot rolling pressure is 80-90 daN/cm; the addition amount of the pretreated melt-blown material accounts for 3-10% of the total raw materials, the melt-blown material is a high-melt-index PP melt-blown material, and the melt index is 800-; spinning by the die head, wherein the pressure of the air box is 2900-.
Description
Technical Field
The invention belongs to the technical field of non-woven fabrics, relates to a preparation process of a polypropylene spun-bonded non-woven fabric, and particularly relates to a polypropylene spun-bonded non-woven fabric and a preparation process for improving the softness of the polypropylene spun-bonded non-woven fabric.
Background
Non-Woven fabrics (also called Non-Woven fabrics) are made of oriented or random fibers. It is called a cloth because of its appearance and certain properties.
The non-woven fabric has the characteristics of moisture resistance, air permeability, flexibility, light weight, no combustion supporting, easy decomposition, no toxicity or irritation, rich color, low price, recycling and the like. For example, the polypropylene (pp material) granules are mostly used as raw materials and produced by the processes of high-temperature melting, spinning, lapping, hot rolling, coiling and the like.
Japanese patent application laid-open No. 2-264012 proposes a polypropylene fiber containing a specific compound, but the feeling and strength are poor, and Japanese patent application laid-open Nos. 4-228666 and 7-11508 propose polypropylene fibers whose surfaces have been subjected to oxidative degradation treatment, but nonwoven fabrics produced from such fibers have stiff feeling. Although there have been a number of attempts to produce nonwovens with good strength and hand by hot-roll bonding, no method has been developed to date that satisfies both the properties of the nonwoven and a lower processing temperature to reduce energy consumption and save cost.
In summary, the existing preparation process of polypropylene spunbonded nonwoven fabric has the following defects:
the non-woven fabric obtained by the existing preparation process of the softness of the polypropylene spun-bonded non-woven fabric comprises the following steps: after hot rolling, the hardness is high, the softness is low, and unnecessary abrasion is easily caused; the water absorption and heat removal performance are reduced after hot rolling; the resistance to rewet is reduced after hot rolling; the hot rolled steel is easy to retract, has high shrinkage rate and lack of stereoscopic impression, and is not favorable for ventilation; the integral strength is reduced after hot rolling, and the steel is easy to break in the using process.
Disclosure of Invention
The invention provides a method for improving the softness of polypropylene spun-bonded non-woven fabrics to solve the technical problems of the existing polypropylene spun-bonded non-woven fabrics, and the following purposes are achieved:
the non-woven fabric obtained by the preparation process of the polypropylene spun-bonded non-woven fabric comprises the following steps:
(1) the polypropylene spun-bonded non-woven fabric has high softness and high strength, the softness reaches 3.41-3.43, and the MD strength reaches 24.20-24.22N/5 cm.
(2) The polypropylene spun-bonded non-woven fabric has other technical performance indexes reaching: CD strength is 10.12-10.93N/5cm, anti-rewet performance is 99.0-99.5%, and shrinkage is 0.2-0.3%.
(3) The polypropylene spun-bonded non-woven fabric has small hot-rolled part hardness and high softness, and is not easy to cause abrasion damage; the hot rolling position has good water absorption, moisture absorption and heat extraction performance; the anti-rewet performance of the hot rolling part is improved; the hot rolling part has low shrinkage, stereoscopic impression, difficult off-line and good air permeability; the overall strength of the hot rolling part is improved, and the hot rolling connecting area is not easy to break in the using process.
In order to solve the technical problems, the following technical scheme is adopted:
the polypropylene spunbonded nonwoven fabric is characterized by having the softness of 3.41-3.43g, the MD strength of 24.20-24.22N/5cm and the CD strength of 10.12-10.93N/5 cm.
The preparation process for improving the softness of the polypropylene spunbonded non-woven fabric is characterized by comprising pretreatment, die head spinning and hot rolling.
As a preferable technical scheme of the invention, the temperature of the hot rolling treatment is 145-160 ℃ and the temperature of the smooth roll is 130-145 ℃.
As a preferable technical scheme of the invention, the hot rolling treatment has the mesh belt speed of 630-645m/min and the hot rolling pressure of 80-90 daN/cm.
In a preferred embodiment of the present invention, in the hot rolling treatment, the speed ratio of the hot rolling mill is 0.8% and the speed ratio of the cold water roll is 1.0%.
As a preferable technical scheme of the invention, the die head performs spinning, the pressure of the air box is 2900-4000pa, the temperature of the upper and lower cold air is 18-22 ℃, and the three areas of the monomer suction air volume are 1300m and obtained by spinning.
In a preferred embodiment of the present invention, the die head performs spinning to obtain a spun yarn having a drawing rate of 0.020%, a hard yarn rate of 0.000%, and a coarse fiber rate of 0.001%.
As the preferable technical scheme of the invention, the pretreatment comprises the steps of adding PP material, melt-blown material, functional master batch and white master batch into a mixing device, carrying out automatic feeding, melt extrusion and melt filtration, and then carrying out melt metering.
As a preferable technical scheme of the invention, the addition amount of the melt-blown material accounts for 3-10% of the total raw materials, the melt-blown material is a low-melting-point PP melt-blown material, and the melt index is 800-1500g/10 min.
As a preferred technical scheme of the invention, the polypropylene spun-bonded non-woven fabric obtained by the hot rolling process has the softness of 3.41-3.43, the MD strength of 24.20-24.22N/5cm and the CD strength of 10.12-10.93N/5 cm.
By adopting the technical scheme, compared with the prior art, the invention has the following advantages:
(1) the non-woven fabric obtained by the preparation process of the polypropylene spun-bonded non-woven fabric has small hardness and high softness, and is not easy to cause abrasion: the softness is 3.41-3.43;
(2) the non-woven fabric obtained by the preparation process of the polypropylene spun-bonded non-woven fabric has good water absorption, moisture absorption and heat removal performance;
(3) the non-woven fabric obtained by the preparation process of the polypropylene spun-bonded non-woven fabric has the advantages that the back-permeation resistance is improved: the anti-rewet performance reaches 99.0 to 99.5 percent;
(4) the non-woven fabric obtained by the preparation process of the polypropylene spun-bonded non-woven fabric is low in shrinkage rate, stereoscopic, good in air permeability and 389-sand-blown 3921/m in air permeability2.s。
(5) The non-woven fabric obtained by the preparation process of the polypropylene spun-bonded non-woven fabric disclosed by the invention has the advantages that the overall strength is improved, and the non-woven fabric is not easy to break in the using process: the MD strength is 24.20-24.22N/5cm, and the CD strength is 10.12-10.93N/5 cm.
(6) The preparation process for improving the softness of the polypropylene spun-bonded non-woven fabric is simple in process and convenient to operate;
the temperature required by hot rolling treatment is low, the requirement on equipment is low, and the energy consumption is low.
Detailed Description
Example 1 preparation process for improving softness of polypropylene spunbonded nonwoven fabric
The preparation process for improving the softness of the polypropylene spunbonded non-woven fabric comprises the following steps:
(1) pretreatment:
adding PP material, melt-blown material, functional master batch and white master batch into a mixing device, carrying out automatic feeding, melt extrusion and melt filtration, and then carrying out melt metering on the raw materials according to requirements.
Wherein the addition amount of the melt-blown material accounts for 3 percent of the total raw materials;
the melt-blown material is a high-melt-index PP melt-blown material, and the melt index is 800g/10 min.
(2) Spinning by a die head:
taking the raw materials after the melt is metered, and carrying out die head spinning;
the parameters of the die head spinning process are as follows:
bellows pressure 2900 pa;
the rotating speed ratio of the fan is 80-82%;
the temperature of the upper and lower cold air is 18 ℃,
carrying out monomer suction air volume three-region cultivation at 1300 m/h to obtain spinning;
the prepared spinning has smooth hand feeling, complete extension, uniform and consistent hardness, and the doubling rate is 0.020%, the hard yarn rate is 0.000%, and the coarse fiber rate is 0.001%.
(3) Hot rolling treatment:
spinning, dividing and lapping to obtain a woven sheet, and passing the woven sheet between a pattern roller and a smooth roller to perform hot rolling treatment;
and in the hot rolling treatment, the temperature of the embossing roll is 145 ℃, and the temperature of the smooth roll is 130 ℃.
The mesh belt speed was 630m/min,
the speed ratio of the hot rolling mill is 0.8 percent,
the speed ratio of the cold water roller is 1.0 percent,
the hot rolling pressure was 80 daN/cm,
and obtaining the polypropylene spun-bonded non-woven fabric through liquid feeding, drying, winding, rolling and slitting.
Embodiment 2 preparation process for improving softness of polypropylene spunbonded nonwoven fabric
The preparation process for improving the softness of the polypropylene spunbonded non-woven fabric comprises the following steps:
(1) pretreatment: adding PP material, melt-blown material, functional master batch and white master batch into a mixing device, carrying out automatic feeding, melt extrusion and melt filtration, and then carrying out melt metering on the raw materials according to requirements.
Wherein the addition amount of the melt-blown material accounts for 5 percent of the total raw materials;
the melt-blown material is a high-melt-index PP melt-blown material, and the melt index is 1200g/10 min.
(2) Spinning by a die head:
taking the raw materials after the melt is metered, and carrying out die head spinning;
the parameters of the die head spinning process are as follows:
bellows pressure is 3300 pa; the rotating speed ratio of the fan is 80-82%;
carrying out upward and downward cold air blowing at the temperature of 20 ℃ and carrying out monomer suction air blowing at three regions of 1300 m/h to obtain spinning;
the prepared spinning has smooth hand feeling, complete extension, uniform and consistent hardness, and the doubling rate is 0.020%, the hard yarn rate is 0.000%, and the coarse fiber rate is 0.001%.
(3) Hot rolling treatment:
spinning, dividing and lapping to obtain a woven sheet, and passing the woven sheet through a pattern roller and a smooth roller to carry out hot rolling treatment;
the hot rolling treatment is carried out, wherein the temperature of a patterned roller is 152 ℃, and the temperature of a smooth roller is 142 ℃;
the mesh belt speed was 639m/min, the hot mill speed ratio was 0.8%, the cold water roller speed ratio was 1.0%, and the hot rolling pressure was 85 daN/cm.
And obtaining the polypropylene spun-bonded non-woven fabric through liquid feeding, drying, winding, rolling and slitting.
Embodiment 3 preparation process for improving softness of polypropylene spunbonded nonwoven fabric
The preparation process for improving the softness of the polypropylene spunbonded non-woven fabric comprises the following steps:
(1) pretreatment: adding PP material, melt-blown material, functional master batch and white master batch into a mixing device, carrying out automatic feeding, melt extrusion and melt filtration, and then carrying out melt metering on the raw materials according to requirements.
Wherein the addition amount of the melt-blown material accounts for 10 percent of the total raw materials;
the melt-blown material is a high-melt-index PP melt-blown material, and the melt index is 1500g/10 min.
(2) Spinning by a die head:
taking the raw materials after the melt is metered, and carrying out die head spinning;
the parameters of the die head spinning process are as follows:
the bellows pressure was 4000 pa; the rotating speed ratio of the fan is 80-82%;
carrying out upward and downward cold air blowing at the temperature of 22 ℃ and carrying out monomer suction air volume three-region at the speed of 1300 m/h to obtain spinning;
the prepared spinning has smooth hand feeling, complete extension, uniform and consistent hardness, and the doubling rate is 0.020%, the hard yarn rate is 0.000%, and the coarse fiber rate is 0.001%.
(3) Hot rolling treatment:
spinning, dividing and lapping to obtain a woven sheet, and passing the woven sheet between a pattern roller and a smooth roller to perform hot rolling treatment;
the hot rolling treatment is carried out, wherein the mesh belt speed is 640m/min, the speed ratio of a hot rolling mill is 0.8%, the speed ratio of a cold water roller is 1.0%, the hot rolling pressure is 90daN/cm, the temperature of a pattern roller is 160 ℃, and the temperature of a smooth roller is 145 ℃.
And obtaining the polypropylene spun-bonded non-woven fabric through liquid feeding, drying, winding, rolling and slitting.
Comparative example 1: on the basis of example 2, only the pretreatment of step (1) was changed, the remainder being unchanged: the meltblown material of the present invention was not added.
Comparative example 2: on the basis of example 2, only the hot rolling treatment in step (3) was changed, and the rest were not changed: the temperature of the embossing roll was changed to 155 deg.c and the smooth roll temperature was changed to 144 deg.c.
Comparative example 3: on the basis of example 2, only the hot rolling treatment of step (1) and step (3) was changed, and the rest was not changed: step (1) pretreatment: the meltblown material of the invention was not added; step (3) hot rolling treatment: the temperature of the embossing roll was 155 ℃ and the smooth roll was 144 ℃. (conventional Process)
The polypropylene spunbonded nonwoven fabric obtained by the invention is tested, and a three-layer product with the gram weight of 15gsm is taken as an example, and the test results are as follows:
remarking:
1. the water absorption was, based on comparative example 1, the weight of water absorbed by the polypropylene spunbonded nonwoven fabric per unit area/the weight of water absorbed by the polypropylene spunbonded nonwoven fabric of comparative example 1;
2. the test method comprises the following steps:
the percentages used in the present invention are weight percentages and the proportions described in the present invention are mass proportions, unless otherwise indicated.
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 (1)
1. A polypropylene spun-bonded non-woven fabric is characterized in that,
the polypropylene spunbonded nonwoven fabric has the softness of 3.41-3.43g and the MD strength of 24.20-24.22N/5 cm; CD strength is 10.12-10.93N/5cm, anti-rewet performance is 99.0-99.5%, shrinkage is 0.2-0.3%;
the preparation process of the polypropylene spun-bonded non-woven fabric comprises pretreatment, die head spinning and hot rolling treatment;
the pretreatment, the raw materials comprise a melt-blown material, the addition amount of the melt-blown material accounts for 3-10% of the total raw materials, the melt-blown material is a high-melt-index PP melt-blown material, and the melt index is 800-;
the hot rolling treatment is carried out, wherein the temperature of a pattern roller is 145-160 ℃, and the temperature of a smooth roller is 130-145 ℃;
the hot rolling treatment is carried out, wherein the mesh belt speed is 630-645 m/min; hot rolling treatment, wherein the hot rolling pressure is 80-90 daN/cm;
and spinning by the die head, wherein the pressure of the air box is 2900-.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811158466.9A CN110965206B (en) | 2018-09-30 | 2018-09-30 | Polypropylene spun-bonded non-woven fabric and preparation process thereof for improving softness of polypropylene spun-bonded non-woven fabric |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811158466.9A CN110965206B (en) | 2018-09-30 | 2018-09-30 | Polypropylene spun-bonded non-woven fabric and preparation process thereof for improving softness of polypropylene spun-bonded non-woven fabric |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110965206A CN110965206A (en) | 2020-04-07 |
| CN110965206B true CN110965206B (en) | 2022-01-25 |
Family
ID=70028858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811158466.9A Active CN110965206B (en) | 2018-09-30 | 2018-09-30 | Polypropylene spun-bonded non-woven fabric and preparation process thereof for improving softness of polypropylene spun-bonded non-woven fabric |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110965206B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112189914A (en) * | 2020-06-29 | 2021-01-08 | 吉祥三宝高科纺织有限公司 | Reusable sterilization and virus killing protective mask and preparation process thereof |
| CN112323263B (en) * | 2020-10-30 | 2022-04-15 | 俊富非织造材料(无锡)有限公司 | Three-dimensional embossed perforated non-woven fabric and preparation method thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101457479A (en) * | 2008-12-29 | 2009-06-17 | 山东省非织造材料工程技术研究中心 | Nonwoven material and its processing method |
| US8795561B2 (en) * | 2010-09-29 | 2014-08-05 | Milliken & Company | Process of forming a nanofiber non-woven containing particles |
| CN102505348A (en) * | 2011-11-28 | 2012-06-20 | 浙江三象新材料科技有限公司 | Preparation method of ultra-soft spunbond meltblown spunbond (SMS) nonwoven fabric |
| CN106811870A (en) * | 2017-02-20 | 2017-06-09 | 恒天嘉华非织造有限公司 | A kind of super soft S/S solids double-component viscose non-woven material and preparation method thereof |
| CN107460640B (en) * | 2017-08-04 | 2020-02-18 | 山东恒鹏卫生用品有限公司 | Non-woven fabric and preparation method and application thereof |
-
2018
- 2018-09-30 CN CN201811158466.9A patent/CN110965206B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110965206A (en) | 2020-04-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100903198B1 (en) | Polyolefin fiber and a method for preparation of the same | |
| CN112176525B (en) | One-way water guide mask base material and preparation method thereof | |
| CN110965203B (en) | Low-energy-consumption environment-friendly polypropylene spun-bonded non-woven fabric and preparation process thereof | |
| CN110965208B (en) | Preparation method for manufacturing polypropylene non-woven fabric by spinning and melting method and non-woven fabric product | |
| CN101818413A (en) | Manufacturing method and device for two-component hollow spun-bonded spunlace non-woven fabrics | |
| CN110965206B (en) | Polypropylene spun-bonded non-woven fabric and preparation process thereof for improving softness of polypropylene spun-bonded non-woven fabric | |
| KR102036663B1 (en) | The method for manufacturing nonwoven fiber for an air filter having an improved fluff | |
| JP2007056417A (en) | Artificial leather base and method for producing the same | |
| CN112323253B (en) | Dual-reinforcement non-woven wiping material and preparation method thereof | |
| CN102493124A (en) | Production method of spun silk and cotton blended spunlace nonwoven fabric | |
| CN109594200A (en) | A kind of high-barrier spinning mixing melting mould assembly ventilative new material, preparation method and applications | |
| CN111636146A (en) | Preparation method of non-woven fabric | |
| CN108543349A (en) | A kind of gradient filtration multilayer spun lacing needle-punched composite and its production technology | |
| KR101056502B1 (en) | Manufacturing method of split microfiber nonwoven | |
| CN110965207B (en) | Spun-bonded polypropylene non-woven fabric and preparation method thereof | |
| CN105297284B (en) | A kind of manufacture method of nonwoven needled jacquard pad | |
| CN112281307B (en) | Non-woven fabric and preparation method thereof | |
| CN110306293B (en) | Super-soft non-woven fabric, preparation process and application thereof in baby diapers | |
| JP2001020132A (en) | Polypropylene fiber and its production | |
| KR100715203B1 (en) | Polyester spunbonded nonwoven fabrics for air filter and preparation method thereof | |
| CN112301545A (en) | Preparation method of hot-air cotton and prepared hot-air cotton | |
| JPH0673654A (en) | Polyamide ultrafine fiber non-woven fabric and its production | |
| JP3728480B2 (en) | Leather-like sheet manufacturing method | |
| JP7416330B1 (en) | Electret melt-blown nonwoven fabric and air filter media made using the same | |
| CN107630354A (en) | Anti- blood finishing agent and anti-blood non-woven material of breathing freely for non-woven material |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |