CN112195562B - Non-woven fabric processing method - Google Patents
Non-woven fabric processing method Download PDFInfo
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- CN112195562B CN112195562B CN202011023981.3A CN202011023981A CN112195562B CN 112195562 B CN112195562 B CN 112195562B CN 202011023981 A CN202011023981 A CN 202011023981A CN 112195562 B CN112195562 B CN 112195562B
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/558—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving in combination with mechanical or physical treatments other than embossing
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/541—Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Nonwoven Fabrics (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
The invention discloses a non-woven fabric processing method, which comprises the following steps of 1, manufacturing mixed fibers; 2. carding and drafting the mixed fiber by a carding machine or a combing machine to form a reticular fiber net layer; 3. conveying the fiber web layer to a preheating press, and performing primary hot extrusion on the fiber web layer by a first hot pressing roll group of the preheating press to perform primary shaping; 4. conveying the fiber net layer subjected to the first hot extrusion into a drying room for baking to fuse internal fibers to form a non-woven fabric semi-finished product; 5. conveying the semi-finished non-woven fabric to a hot-cold press, carrying out secondary hot extrusion on the semi-finished non-woven fabric by a second hot-press roller set of the hot-cold press, further compacting and consolidating the semi-finished non-woven fabric together, conveying the semi-finished non-woven fabric to a cold-press roller set, and carrying out cold extrusion and solidification on the fiber web layer by the cold-press roller set to form a finished non-woven fabric; 6. and rolling the non-woven fabric finished product by a material receiving machine. By adopting the steps, the stiffness, thickness uniformity and air permeability resistance of the non-woven fabric can meet the production requirements.
Description
Technical Field
The invention relates to the technical field of non-woven fabric processing, in particular to a non-woven fabric processing method.
Background
Nonwoven fabrics, also known as nonwovens, non-wovens, are sheets, webs, or batts made from oriented or randomly arranged fibers bonded to one another by abrasion, cohesion, or bonding, or a combination of these methods. 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 colors, low price, recycling and the like.
When the existing non-woven fabric is processed, a fiber net layer carded into a net is directly conveyed to an oven for baking and fusing, then calendaring and shaping are carried out, and then rolling is carried out; during the baking, the shrinkage is easy to be unstable, and meanwhile, during the calendering and shaping, two ultra-hard smooth rollers or pattern rollers are usually adopted for carrying out opposite pressing and shaping, so that after the non-woven fabric is shaped, the requirements of stiffness, air permeability resistance and thickness uniformity of the non-woven fabric cannot meet the production requirements, and the quality of the non-woven fabric is seriously influenced.
Disclosure of Invention
The invention aims to provide a non-woven fabric processing method which can meet the production requirements of stiffness, thickness uniformity and air permeability resistance and has good quality.
In order to solve the above technical problems, the present invention can be implemented by adopting the following technical solutions:
a method for processing non-woven fabrics comprises the steps of 1, manufacturing mixed fibers;
step 2, carding and drafting the mixed fiber by a carding machine or a combing machine, and forming a reticular fiber net layer at the output part of the carding machine or the combing machine;
step 3, conveying the fiber web layer to a preheating press, performing primary hot extrusion on the fiber web layer by a first hot pressing roller group of the preheating press, performing primary shaping, and performing butt pressing on the fiber web layer by a first silica gel pressing roller and a first hot pressing roller group of the preheating press before and/or after the primary hot extrusion;
step 4, conveying the fiber net layer subjected to the first hot extrusion into a drying room for baking to fuse the internal fibers to form a non-woven fabric semi-finished product;
step 5, conveying the non-woven fabric semi-finished product to a hot-cold press, carrying out secondary hot extrusion on the non-woven fabric semi-finished product by a second hot-press roller set of the hot-cold press, further compacting and consolidating the non-woven fabric semi-finished product together, conveying the non-woven fabric semi-finished product to a cold-press roller set, and carrying out cold extrusion and solidification on the fiber net layer by the cold-press roller set to form a non-woven fabric finished product;
and 6, winding the non-woven fabric finished product by a material receiving roller of the material receiving machine.
In one embodiment, in the step 5, before and/or after the second hot extrusion of the semi-finished non-woven fabric, the semi-finished non-woven fabric is pressed against the second silicone pressing roller and the second hot pressing roller set of the hot and cold press.
In one embodiment, in said step 3, the temperature of the first hot press roll group is 100 ℃ -160 ℃, the pressure is controlled at 2-6kg/cm, and the pressures between the first silica gel stitching rolls and the first hot press roll group are controlled at 3-7 kg/cm.
In one embodiment, in the step 4, the temperature of the drying room is 200-260 ℃.
In one embodiment, in the step 5, the temperature of the second hot pressing roller set is 180 ℃ -240 ℃, the pressure is controlled at 2-6kg/cm, and the pressures between the second silica gel press-bonding rollers and the second hot pressing roller set are controlled at 3-7 kg/cm.
The beneficial effects of the invention are as follows: the non-woven fabric processing method comprises the steps that after a fiber web layer is obtained through carding and drafting by a carding machine or a combing machine, pre-hot pressing is needed, the fiber web layer is subjected to first hot extrusion by a pre-hot press, so that fibers in the fiber web layer are preliminarily shaped, and meanwhile, before and/or after the first hot extrusion, the fiber layer can be pressed against a first hot pressing roller set through a first silica gel pressing roller, so that the preliminary shaping of the fiber layer is more stable, and the fiber layer cannot be damaged; when the semi-finished non-woven fabric product formed after being baked in the drying room is conveyed to the hot and cold press, the semi-finished non-woven fabric product is subjected to secondary hot extrusion through the hot and cold press, the flatness of the semi-finished non-woven fabric product is more stabilized, and similarly, the semi-finished non-woven fabric product is subjected to counterpressure with the second hot pressing roller set before and/or after the secondary hot extrusion, so that the stiffness, thickness and air permeability resistance of the semi-finished non-woven fabric product all meet the requirements of production.
Drawings
FIG. 1 is a flow chart of a method for processing a nonwoven fabric according to the present invention;
FIG. 2 is a schematic view of the structure of each apparatus of the nonwoven fabric processing method of the present invention.
As shown in the attached drawings: 100. preheating a press; 200. a drying room; 300. a hot and cold press; 400. a material receiving machine.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will recognize without departing from the spirit and scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
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 invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 and 2, a method for processing a non-woven fabric includes the steps of 1, manufacturing a mixed fiber; step 2, carding and drafting the mixed fiber by a carding machine or a combing machine, and forming a reticular fiber net layer at the output part of the carding machine or the combing machine; step 3, conveying the fiber web layer to the preheating press 100, performing first hot extrusion on the fiber web layer by a first hot pressing roller set of the preheating press 100, performing primary shaping, and performing butt pressing on the fiber web layer by a first silica gel pressing roller and a first hot pressing roller set of the preheating press 100 before and/or after the first hot extrusion; step 4, conveying the first hot-extruded fiber mesh layer into a drying room 200 for baking to fuse the internal fibers to form a non-woven fabric semi-finished product; step 5, conveying the non-woven fabric semi-finished product to a hot-cold press 300, carrying out secondary hot extrusion on the non-woven fabric semi-finished product again by a second hot-press roller set of the hot-cold press 300, further compacting and consolidating the non-woven fabric semi-finished product together, conveying the non-woven fabric semi-finished product to a cold-press roller set, and carrying out cold extrusion curing on a fiber net layer by the cold-press roller set to form a non-woven fabric finished product; and step 6, rolling the non-woven fabric finished product by a material receiving roller of the material receiving machine 400.
Specifically, when the non-woven fabric is produced and processed, the mixed fiber is prepared first, then the mixed fiber is combed by a carding machine and a combing machine, a fiber network layer is formed, then the fiber network layer is sequentially conveyed to a preheating press 100 to be subjected to first hot extrusion, the fibers of the fiber network layer are primarily fused and primarily shaped through the first hot extrusion, the primarily shaped fiber network layer is conveyed to a drying room 200 to be baked, the fibers inside the fiber network layer are fused to form a non-woven fabric semi-finished product, the non-woven fabric semi-finished product is conveyed to a hot and cold press 300 to be subjected to second hot extrusion, the flatness and the thickness of the non-woven fabric semi-finished product are more stabilized through the second hot extrusion, then the non-woven fabric semi-finished product is pressed by a cold press roller set of the hot and cold press to be solidified to form a non-woven fabric finished product, the smoothness of the surface of the non-woven fabric finished product is improved through the cold press roller set, and finally the non-woven fabric finished product is rolled by a material collecting roller of a material collecting machine 400, realizing the production and processing of the non-woven fabric.
Wherein, before the first hot extrusion and/or after the first hot extrusion, through mutual counterpressure of first silica gel pressfitting roller and first hot-rolling group, make the fibre of fibre web layer more stable, ensure that fibre web layer is stable when the shrink to ensure its thickness, simultaneously, adopt the silica gel material because of first silica gel pressfitting roller, have certain flexibility, consequently, when counterpressure, can not cause tearing to fibre web layer, ensure its quality.
Further, in step 5, the semi-finished product of non-woven fabrics is before the hot extrusion of second time and/or after the hot extrusion of second time, the semi-finished product of non-woven fabrics can be counterpressed by the second silica gel compression roller of hot cold press machine and second hot pressing roller group, counterpressure is carried out to the semi-finished product of non-woven fabrics through second silica gel compression roller and second hot pressing roller group, thereby stabilize semi-finished product of non-woven fabrics's thickness, stiffness more, and can not cause the tearing to the semi-finished product of non-woven fabrics, and make air permeability resistance reach production needs, improve its quality.
In the present embodiment, in the step 3, the temperature of the first hot pressing roller group is 140 ℃, the pressure control is at 3kg/cm, and the pressure control between the first silica gel press-bonding roller and the first hot pressing roller group is at 4 kg/cm; in the step 4, the temperature of the drying room is 240 ℃; in addition, in the step 5, the temperature of the second hot pressing roller set is 220 ℃, the pressure is controlled at 3kg/cm, and the pressure between the second silicone gel press-fit rollers and the second hot pressing roller set is controlled at 4 kg/cm.
When the first hot extrusion is carried out on the fiber net layer, the first hot pressing roller group with the temperature of 140 ℃ is used for extruding, so that the fibers in the fiber net layer are preliminarily fused and preliminarily shaped, the pressure between the first hot pressing roller group is 3kg/cm, the pressure between the first silica gel pressing roller and the first hot pressing roller group is controlled to be 4 kg/cm, the fiber net layer can be better extruded and conveyed, and the fiber net layer cannot be pulled apart.
After the fiber net layer is conveyed to the drying room, fibers of the fiber net layer are fused through high temperature of 240 ℃ in the drying room to form a non-woven fabric semi-finished product, the non-woven fabric semi-finished product is conveyed to a hot-cold press machine, second hot extrusion is carried out through a second hot pressing roller set with the temperature of 220 ℃, the structure of the non-woven fabric semi-finished product is stable, the required thickness and stiffness are achieved, similarly, the pressure between the second hot pressing roller set is controlled to be 3kg/cm, and the pressure between a second silica gel pressing roller and the second hot pressing roller set is controlled to be 4 kg/cm, so that the non-woven fabric semi-finished product is not broken during extrusion conveying, and the stiffness, the thickness uniformity and the air permeability resistance of the non-woven fabric finished product can all achieve the production requirements.
Certainly, when the non-woven fabrics with different thicknesses are produced, the temperature of the drying room, the temperature and the pressure of the first hot-pressing roller and the temperature and the pressure of the second hot-pressing roller are different, and the temperature and the pressure can be correspondingly adjusted according to the actually manufactured non-woven fabrics, so that the non-woven fabrics can meet the production requirements.
The foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. The present invention may be readily implemented by those skilled in the art as illustrated in the accompanying drawings and described above; however, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention; meanwhile, any equivalent changes, modifications and evolutions made to the above embodiments according to the substantial technology of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (4)
1. A method for processing non-woven fabrics is characterized by comprising the following steps:
step 1, manufacturing mixed fibers;
step 2, carding and drafting the mixed fiber by a carding machine or a combing machine, and forming a reticular fiber net layer at the output part of the carding machine or the combing machine;
step 3, conveying the fiber net layer to a preheating press and heating the fiber net layerCarrying out first hot extrusion on the fiber mesh layer by a first hot pressing roller set of a preheating press, carrying out primary shaping, carrying out butt pressing on the fiber mesh layer by a first silica gel pressing roller and a first hot pressing roller set of the preheating press before and/or after the first hot extrusion, and controlling the pressure between the first silica gel pressing roller and the first hot pressing roller set to be 3-7kg/cm 2 ；
Step 4, conveying the fiber net layer subjected to the first hot extrusion into a drying room for baking to fuse the internal fibers to form a non-woven fabric semi-finished product;
and 5, conveying the semi-finished non-woven fabric product to a hot-cold press, carrying out secondary hot extrusion on the semi-finished non-woven fabric product by a second hot-pressing roll set of the hot-cold press, further compacting and consolidating the semi-finished non-woven fabric product together, carrying out counter pressing on the semi-finished non-woven fabric product by a second silica gel pressing roll of the hot-cold press and the second hot-pressing roll set before and/or after the semi-finished non-woven fabric product is subjected to the secondary hot extrusion, and controlling the pressure between the second silica gel pressing roll and the second hot-pressing roll set to be 3-7kg/cm 2 Then conveying the fiber net layer to a cold pressing roller set, and performing cold extrusion and solidification on the fiber net layer through the cold pressing roller set to form a non-woven fabric finished product;
and 6, winding the non-woven fabric finished product by a material receiving roller of the material receiving machine.
2. The method of processing a nonwoven fabric according to claim 1, wherein: in the step 3, the temperature of the first hot-pressing roller group is 100-160 ℃, and the pressure is controlled to be 2-6kg/cm 2 。
3. The method of processing a nonwoven fabric according to claim 1, wherein: in the step 4, the temperature of the drying room is 200-260 ℃.
4. The method of processing a nonwoven fabric according to claim 1, characterized in that: in the step 5, the temperature of the second hot-pressing roller group is 180-240 ℃, and the pressure is controlled at 2-6kg/cm 2 。
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| CN202011023981.3A CN112195562B (en) | 2020-09-25 | 2020-09-25 | Non-woven fabric processing method |
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| CN202011023981.3A CN112195562B (en) | 2020-09-25 | 2020-09-25 | Non-woven fabric processing method |
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| CN112195562B true CN112195562B (en) | 2022-07-26 |
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| US5770531A (en) * | 1996-04-29 | 1998-06-23 | Kimberly--Clark Worldwide, Inc. | Mechanical and internal softening for nonwoven web |
| CN101570915A (en) * | 2009-06-05 | 2009-11-04 | 侯玉生 | Method for preparing corn fiber non-woven fabric |
| CN101731811A (en) * | 2009-12-16 | 2010-06-16 | 常州纺织服装职业技术学院 | Preparation technology of lotus fiber convenience bag |
| CN104178925A (en) * | 2013-05-21 | 2014-12-03 | 东丽纤维研究所（中国）有限公司 | Thermally-bonded nonwoven fabric and production method and use thereof |
| CN103352325A (en) * | 2013-07-25 | 2013-10-16 | 厦门延江工贸有限公司 | Non-woven fabrics and manufacturing method thereof |
| CN104452102A (en) * | 2014-10-15 | 2015-03-25 | 长兴百泓无纺布有限公司 | Technology for processing natural kapok fiber hot-rolled non-woven cloth |
| CN104562441B (en) * | 2015-01-12 | 2017-12-22 | 烟台万华循环纤维发展有限公司 | A kind of manufacturing process of regenerated fiber plate |
| CN106676752A (en) * | 2016-08-25 | 2017-05-17 | 仇颖超 | Preparation method of low-resistance composite air filter material |
| CN106637666A (en) * | 2016-11-30 | 2017-05-10 | 福建三达节能新材股份有限公司 | Inflaming retarding cushion lining type non-woven fabric and preparation process |
| CA3046271A1 (en) * | 2016-12-14 | 2018-06-21 | Fpinnovations | Sound insulating mat, method of manufacturing the same, noise control system comprising the same and its use |
| CN106906569B (en) * | 2017-02-07 | 2019-11-12 | 常州维盛无纺科技有限公司 | The preparation method of natural fiber and chemical fibre multilayer combing composite non woven cloth base material |
| CN108004681B (en) * | 2017-12-29 | 2020-08-07 | 尤志勇 | Conductive non-woven fabric and preparation method thereof |
| CN108547060A (en) * | 2018-03-16 | 2018-09-18 | 平湖市伊凡家箱包有限公司 | A kind of Fypro/ramee composite fibrous and preparation method thereof |
| CN109322060A (en) * | 2018-12-03 | 2019-02-12 | 徐州荣创企业咨询管理有限公司 | A kind of manufacturing method of non-woven fabrics |
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