CN112195562A - Non-woven fabric processing method - Google Patents
Non-woven fabric processing method Download PDFInfo
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- CN112195562A CN112195562A CN202011023981.3A CN202011023981A CN112195562A CN 112195562 A CN112195562 A CN 112195562A CN 202011023981 A CN202011023981 A CN 202011023981A CN 112195562 A CN112195562 A CN 112195562A
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- woven fabric
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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
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 mesh layer; 3. conveying the fiber mesh layer to a preheating press, and performing primary hot extrusion on the fiber mesh layer by a first hot pressing roll group of the preheating press to perform primary shaping; 4. conveying the fiber mesh 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; 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-woven fabrics, are sheets, webs, or batts made of oriented or randomly arranged fibers that are bonded to one another by friction, 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 color, 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 baking, shrinkage is easy to be unstable, and meanwhile, during calendering and shaping, two extra-hard smooth rollers or pattern rollers are usually adopted for carrying out counter-pressing and shaping, so that after the non-woven fabric is shaped, the requirements of stiffness and air permeability on resistance and thickness uniformity of the non-woven fabric cannot meet the requirements of production, 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 scheme:
a non-woven fabric processing method 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 mesh layer to a preheating press, performing primary hot extrusion on the fiber mesh layer by a first hot pressing roller group of the preheating press, performing primary shaping, and performing butt pressing on the fiber mesh 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 said step 5, the temperature of the second hot press roll group is 180 ℃ -240 ℃, the pressure is controlled at 2-6kg/cm, and the pressures between the second silicone glue stitching rolls and the second hot press roll group are controlled at 3-7 kg/cm.
The invention has the beneficial effects that: 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 the apparatuses 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.
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 descriptive 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 and solidification on a fiber net layer by the cold-press roller set to form a non-woven fabric finished; 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, 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 set, counterpressure is carried out to the semi-finished product of non-woven fabrics through second silica gel compression roller and second hot pressing roller set to more stabilize semi-finished product of non-woven fabrics's thickness, stiffness, and can not cause the tearing to the semi-finished product of non-woven fabrics, and make air resistance reach and produce the needs, improve its quality.
In the present embodiment, in the step 3, the temperature of the first hot press roller group is 140 ℃, the pressure is controlled at 3kg/cm, and the pressure control between the first silica gel press-fit roller and the first hot press roller group is in 4 kg/cm; in the step 4, the temperature of the drying room is 240 ℃; in addition, in said step 5, the temperature of the second hot press roller group is 220 ℃, the pressure is controlled at 3kg/cm, and the pressure control between the second silicone glue stitching roller and the second hot press roller group is in 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 mesh layer is conveyed to the drying room, fibers of the fiber mesh layer are fused through the high temperature of 240 ℃ in the drying room to form a semi-finished non-woven fabric, the semi-finished non-woven fabric is conveyed to the hot-cold press, the second hot-pressing roller set with the temperature of 220 ℃ is used for carrying out second hot-pressing, the structure of the semi-finished non-woven fabric 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, the pressure between the second silica gel pressing roller set and the second hot-pressing roller set is controlled to be 4 kg/cm, the semi-finished non-woven fabric is not broken when being conveyed in an extruding mode, and the stiffness, the thickness uniformity and the air permeability resistance of the finished non-woven fabric can achieve 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 of the second hot-pressing roller 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 changes, modifications, and evolutions of the equivalent changes of the above embodiments according to the actual techniques of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (5)
1. A method for processing non-woven fabric 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 mesh layer to a preheating press, performing primary hot extrusion on the fiber mesh layer by a first hot pressing roller group of the preheating press, performing primary shaping, and performing butt pressing on the fiber mesh 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.
2. The method of processing a nonwoven fabric according to claim 1, characterized in that: in the step 5, before and/or after the non-woven fabric semi-finished product is subjected to the second hot extrusion, the non-woven fabric semi-finished product is pressed against the second hot pressing roller set by the second silica gel pressing roller of the hot and cold press.
3. The method of processing a nonwoven fabric according to claim 1, characterized in that: in the step 3, the temperature of the first hot press roller group is 100 ℃ -160 ℃, the pressure is controlled at 2-6kg/cm, and the pressure between the first silica gel press-fit roller and the first hot press roller group is controlled at 3-7 kg/cm.
4. The method of processing a nonwoven fabric according to claim 1, characterized in that: in the step 4, the temperature of the drying room is 200-260 ℃.
5. The method of processing a nonwoven fabric according to claim 1, characterized in that: in the step 5, the temperature of the second hot press roller group is 180 ℃ -240 ℃, the pressure is controlled at 2-6kg/cm, and the pressure between the second silica gel press rollers and the second hot press roller group is controlled at 3-7 kg/cm.
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| CN112195562B (en) | 2022-07-26 |
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