CN111254580B - Manufacturing method of split fiber non-woven fabric - Google Patents
Manufacturing method of split fiber non-woven fabric Download PDFInfo
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- CN111254580B CN111254580B CN202010133926.3A CN202010133926A CN111254580B CN 111254580 B CN111254580 B CN 111254580B CN 202010133926 A CN202010133926 A CN 202010133926A CN 111254580 B CN111254580 B CN 111254580B
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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
- D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4374—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece using different kinds of webs, e.g. by layering webs
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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
- D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4282—Addition polymers
- D04H1/4291—Olefin series
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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
- D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4282—Addition polymers
- D04H1/4318—Fluorine series
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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
- D04H1/44—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
-
- 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
- D04H1/44—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
- D04H1/492—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres by fluid jet
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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
- D04H1/44—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
- D04H1/498—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres entanglement of layered webs
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The invention relates to the technical field of non-woven fabrics, in particular to a method for manufacturing a film-split fiber non-woven fabric, which comprises the steps of raw material preparation, adhesive spraying, film pressing, layering, fiber opening, reinforcement and the like, wherein when the adhesive is sprayed, the adhesive is sprayed in a dot matrix mode, 30-72 spraying points are sprayed in the area of each square decimeter, and the area of each spraying point is 0.005cm2‑0.04cm2In the meantime. Compared with the prior art, the non-woven fabric manufactured by the method is manufactured by one-step forming, the fiber length in the non-woven fabric is controllable, the overall mechanical property of the film-split fiber non-woven fabric can be enhanced, the tensile breaking strength, the bursting strength, the tearing strength and the like are higher, meanwhile, the water and air permeability is good, and the method is suitable for the fields of civil engineering and the like.
Description
Technical Field
The invention relates to the technical field of non-woven fabrics, in particular to a method for manufacturing a film-split fiber non-woven fabric.
Background
Nonwoven fabrics, also known as non-woven fabrics and non-woven fabrics, are made of oriented or random fibers, are a new generation of environmentally friendly materials, and are called fabrics because of their appearance and certain properties. The non-woven fabric has no warp and weft, is very convenient to cut and sew, is light in weight and easy to shape, and is popular with hand fans. In the prior art, when producing a nonwoven fabric, a fiber web is usually processed into a nonwoven fabric on a production line, and a needle machine or a spunlace machine is used to repeatedly puncture the nonwoven fabric in a direction perpendicular to the fiber web, so that fibers in the fiber web are mutually cohered and wound, thereby obtaining the nonwoven fabric.
With the progress of technology, the raw materials for producing the non-woven fabric are not limited to fibrous raw materials, and the method is expanded to directly adopt one layer or multiple layers of films to be mixed and layered with other fiber nets and then to be made into the non-woven fabric through needle punching or water jetting, or directly adopt multiple layers of films to be made into the non-woven fabric through water punching or needle punching and fiber splitting. For example, chinese application No. 201611272563.1 discloses a novel nonwoven fabric based on polytetrafluoroethylene film and a process for preparing the same, wherein a polytetrafluoroethylene film is subjected to biaxial stretching after being needled, the polytetrafluoroethylene film is split by repeating needling and biaxial stretching, and the filaments are combined in a twisted form and compressed to form the novel nonwoven fabric based on polytetrafluoroethylene. Similarly, the chinese application No. 201611272541.5 discloses a spunlace nonwoven fabric of ultra-high molecular weight polyethylene film and a preparation process thereof, which comprises spraying high-pressure fine water flow onto one or more layers of ultra-high molecular weight polyethylene film to open the ultra-high molecular weight polyethylene film, spraying high-pressure fine water flow to compound fiber filaments into a fiber mesh in an intertwined form, and repeatedly spunlacing to compress and reinforce the fiber mesh, and drying to form the spunlace nonwoven fabric of the ultra-high molecular weight polyethylene film.
However, in the above patent application, when the film layer is opened, the needle punching or the water punching is adopted, the opening of the film layer is completely in a random state, and the fineness, the length and the like of the fibers formed after the opening of the film are completely randomly distributed, so that the performance of the finally formed non-woven fabric is not controllable. The non-woven fabric is made by opening the membrane in such a way, and when the fiber of the membrane after opening is too thick, the fiber is not beneficial to entanglement; when the fibers after the membrane opening are too thin, although mutual entanglement among the fibers is more easily formed, the fibers are too thin, the strength is too much reduced, and the overall strength of the non-woven fabric is not improved, especially in the environment that the non-woven fabric formed by the membrane opening is generally used in industry and needs higher strength.
In view of the above problems, it is a technical problem to be solved by those skilled in the art how to controllably open a film to form a nonwoven fabric having a high strength.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides a method for manufacturing a film-split fiber non-woven fabric, which is manufactured by one-step forming, so that the overall mechanical property of the film-split fiber non-woven fabric is enhanced, the film-split fiber non-woven fabric has higher tensile breaking strength, bursting strength, tearing strength and the like, and simultaneously has good water and air permeability, and is suitable for the fields of civil engineering and the like.
In order to achieve the purpose, the invention provides the following technical scheme:
a method for manufacturing a split fiber nonwoven fabric comprises the following steps:
preparing raw materials in step (1): preparing a film-shaped material for preparing a non-woven fabric;
step (2) spraying adhesive: the film material prepared in step (1)Spraying adhesive on the material, wherein the adhesive is sprayed by dot matrix, each square decimeter area is sprayed with 30-72 spray points, and each spray point area is 0.005cm2-0.04cm2To (c) to (d);
step (3) film pressing: after the adhesive is dried or cured, extruding the film-shaped material obtained in the step (2) by using a press roll with tiny strip-shaped bulges on the surface to form an indentation near the spraying point of the film-shaped material;
layering in step (4): layering the multiple layers of the film-shaped materials obtained after the film pressing procedure in the step (3), or alternatively layering the multiple layers of the film-shaped materials obtained after the film pressing procedure in the step (3) and a fiber net for preparing non-woven fabrics in an alternating manner until the preset thickness is reached to obtain the layered materials;
step (5), opening: splitting the layered material subjected to the layering process in the step (4) in a needling or spunlace mode, wherein during needling or spunlace, the film-shaped material in the layered material is split due to repeated puncture of a puncture needle or high-pressure micro water flow jet puncture, and meanwhile, the position, sprayed with the adhesive, in the film-shaped material is not split easily due to the action of the adhesive, and the indentation part on the film-shaped material is broken easily, so that fibers with controllable lengths and different thicknesses are formed;
and (6) reinforcement: and continuously carrying out secondary needling or secondary spunlace to enable the split fibers to generate displacement, interpenetration, entanglement and cohesion, thereby obtaining the film-split fiber non-woven fabric.
Preferably, when the spunlace method is adopted, after the reinforcement in the step (6), a drying step is further performed, and the split fiber nonwoven fabric obtained after the spunlace is subjected to drying treatment.
Preferably, in the step (2) of spraying the adhesive, the adhesive is water-soluble vinylon or other water-soluble glue capable of being dissolved in water; and (5) and (6) respectively adopting a water jet method to open and reinforce.
Preferably, the membrane-like material is a polytetrafluoroethylene film or an ultra-high molecular weight polyethylene film.
Preferably, the step (6) of reinforcing further comprises a rolling and packaging step.
Preferably, the film pressing step (3) may be omitted, and the step (4) of laying the layer is performed after the binder is dried or cured directly on the film material obtained in the step (2) after the binder spraying step.
Advantageous effects
Compared with the prior art, the invention has the following beneficial effects: the invention provides a method for manufacturing a film-split fiber non-woven fabric, which is used for manufacturing the non-woven fabric through one-step forming, a film-shaped material is not required to be subjected to fiber splitting in advance and then is subjected to processes such as carding and the like to prepare a fiber net, meanwhile, the overall mechanical property of the film-split fiber non-woven fabric is enhanced, and the film-split fiber non-woven fabric has higher tensile breaking strength, bursting strength, tearing strength and the like.
The method for preparing the split fiber non-woven fabric can control the length and thickness of the split fibers, and improves the random fiber splitting in the prior art into controllable fiber size, which is also one of the invention points of the invention.
Detailed Description
The present invention will be described in detail with reference to specific examples.
A method for manufacturing a split fiber nonwoven fabric comprises the following steps:
preparing raw materials in step (1): preparing a film-shaped material for preparing a non-woven fabric;
step (2) spraying adhesive: spraying an adhesive on the film-shaped material prepared in the step (1), wherein the adhesive is sprayed in a dot matrix manner, 30-72 spraying points are sprayed in each square decimeter area, and each spraying point is 0.005cm in area2-0.04cm2To (c) to (d);
step (3) film pressing: after the adhesive is dried or cured, extruding the film-shaped material obtained in the step (2) by using a press roll with tiny strip-shaped bulges on the surface to form an indentation near the spraying point of the film-shaped material;
layering in step (4): layering the multiple layers of the film-shaped materials obtained after the film pressing procedure in the step (3), or alternatively layering the multiple layers of the film-shaped materials obtained after the film pressing procedure in the step (3) and a fiber net for preparing non-woven fabrics in an alternating manner until the preset thickness is reached to obtain the layered materials;
step (5), opening: splitting the layered material subjected to the layering process in the step (4) in a needling or spunlace mode, wherein during needling or spunlace, the film-shaped material in the layered material is split due to repeated puncture of a puncture needle or high-pressure micro water flow jet puncture, and meanwhile, the position, sprayed with the adhesive, in the film-shaped material is not split easily due to the action of the adhesive, and the indentation part on the film-shaped material is broken easily, so that fibers with controllable lengths and different thicknesses are formed;
and (6) reinforcement: and continuously carrying out secondary needling or secondary spunlace to enable the split fibers to generate displacement, interpenetration, entanglement and cohesion, thereby obtaining the film-split fiber non-woven fabric.
In the step (2), adhesive is sprayed in a dot matrix mode, the number of unit areas of spraying points and the area of each spraying point are limited, and the fiber length can be controlled. The number of the spray points and the area of the spray points in the range can form the fiber with moderate fiber length and without excessive coarseness. The spraying points sprayed with the adhesive are not easy to open when subjected to needling or spunlace, and the film-shaped material near the spraying points is easier to open, so that thinner fibers are surrounded by the spraying points, and the spraying points are thicker; meanwhile, the divergent fibers are partially distributed around the spraying point, and fine fibers are distributed around the spraying point. Due to the existence of the fibers, the fine fibers are mutually entangled, interpenetrated and cohered for reinforcement when being subsequently reinforced into the non-woven fabric, and the spraying points are thick, so that the strength of the non-woven fabric is increased.
And (4) performing the film pressing process in the step (3), wherein the main purpose is to control the fiber length formed by final fiber opening through indentation controllability, so that the fiber length is not too discrete, and the mutual entanglement, interpenetration and cohesion among fibers during subsequent reinforcement and other processes are influenced, and the strength of the non-woven fabric is finally influenced.
Preferably, when the spunlace method is adopted, after the reinforcement in the step (6), a drying step is further performed, and the split fiber nonwoven fabric obtained after the spunlace is subjected to drying treatment.
Preferably, in the step (2) of spraying the adhesive, the adhesive is water-soluble vinylon or other water-soluble glue capable of being dissolved in water; and (5) and (6) respectively adopting a water jet method to open and reinforce. The water-soluble vinylon or other water-soluble glue which can be dissolved in water is used as the adhesive, when the spunlace fiber opening or reinforcement is carried out, the high-pressure micro water flow can not only carry out fiber opening and fiber web reinforcement, but also dissolve the water-soluble vinylon and other water-soluble glue which can be dissolved in water, so that the finally formed non-woven fabric has no adhesive, and the thickness of the fiber can be influenced by the existence of the adhesive after all. Of course, this time is sufficient to complete the hydroentangling fiber opening and consolidation process because the next step after the adhesive is sprayed is to wait until the adhesive dries or cures, and the nature of the water-soluble vinylon and other water-soluble glues that are soluble in water, in addition, make these adhesives slowly dissolve in water, and not completely dissolve immediately after water. After the consolidation process is completed, the binder continues to dissolve until it is complete, so that there is little binder in the nonwoven, but the fibers formed in the process, which have coarser locations and are located at the spray points, remain.
Preferably, the membrane-like material is a polytetrafluoroethylene film or an ultra-high molecular weight polyethylene film.
Preferably, the step (6) of reinforcing further comprises a rolling and packaging step.
Preferably, the film pressing step (3) may be omitted, and the step (4) of laying the layer is performed after the binder is dried or cured directly on the film material obtained in the step (2) after the binder spraying step. Namely, the multilayer film material obtained after the adhesive spraying process of the step (2) is subjected to layering after the adhesive is dried or cured, or the film material obtained after the adhesive spraying process of the step (2) is subjected to alternate layering with the fiber net for preparing the common non-woven fabric after the adhesive is dried or cured until the preset thickness is reached, so that the layered material is obtained. The main purpose of the lamination process is to control the fiber length, and when the film-like material after spraying the binder can form a nonwoven fabric with higher strength meeting the production requirement, the lamination process can be omitted.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (5)
1. A method for manufacturing a split fiber nonwoven fabric comprises the following steps:
preparing raw materials in step (1): preparing a film-shaped material for preparing a non-woven fabric;
step (2) spraying adhesive: spraying an adhesive on the film-shaped material prepared in the step (1), wherein the adhesive is sprayed in a dot matrix manner, 30-72 spraying points are sprayed in each square decimeter area, and each spraying point is 0.005cm in area2-0.04cm2To (c) to (d);
step (3) film pressing: after the adhesive is dried or cured, extruding the film-shaped material obtained in the step (2) by using a press roll with tiny strip-shaped bulges on the surface to form an indentation near the spraying point of the film-shaped material;
layering in step (4): layering the multiple layers of the film-shaped materials obtained after the film pressing procedure in the step (3), or alternatively layering the multiple layers of the film-shaped materials obtained after the film pressing procedure in the step (3) and a fiber net for preparing non-woven fabrics in an alternating manner until the preset thickness is reached to obtain the layered materials;
step (5), opening: splitting the layered material subjected to the layering process in the step (4) in a needling or spunlace mode, wherein during needling or spunlace, the film-shaped material in the layered material is split due to repeated puncture of a puncture needle or high-pressure micro water flow jet puncture, and meanwhile, the position, sprayed with the adhesive, in the film-shaped material is not split easily due to the action of the adhesive, and the indentation part on the film-shaped material is broken easily, so that fibers with controllable lengths and different thicknesses are formed;
and (6) reinforcement: and continuously carrying out secondary needling or secondary spunlace to enable the split fibers to generate displacement, interpenetration, entanglement and cohesion, thereby obtaining the film-split fiber non-woven fabric.
2. The method for producing a split-fiber nonwoven fabric according to claim 1, wherein: when the spunlace method is adopted, after the reinforcement in the step (6), a drying step is also carried out, and the split fiber non-woven fabric obtained after the spunlace is dried.
3. The method for producing a split-fiber nonwoven fabric according to claim 1, wherein: in the step (2), the adhesive is sprayed, and is water-soluble vinylon or other water-soluble glue which can be dissolved in water; and (5) and (6) respectively adopting a water jet method to open and reinforce.
4. The method for producing the split fiber nonwoven fabric according to any one of claims 1 to 3, wherein: the membrane material is a polytetrafluoroethylene film or an ultrahigh molecular weight polyethylene film.
5. The method for producing a split-fiber nonwoven fabric according to claim 4, wherein: and (4) after the reinforcing procedure in the step (6), a rolling and packaging step is also included.
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| CN202010133926.3A CN111254580B (en) | 2020-03-02 | 2020-03-02 | Manufacturing method of split fiber non-woven fabric |
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| CN202010133926.3A CN111254580B (en) | 2020-03-02 | 2020-03-02 | Manufacturing method of split fiber non-woven fabric |
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| CN111254580B true CN111254580B (en) | 2021-05-07 |
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| FR2672313B1 (en) * | 1991-02-05 | 1993-04-30 | Picardie Lainiere | PROCESS FOR THE MANUFACTURE OF THERMAL-STICKING LINES, THERMAL-STICKING LINING. |
| EP1134035A1 (en) * | 2000-03-13 | 2001-09-19 | Solipat Ag | Process and apparatus for applying a partial coating on a surface |
| CN101906701A (en) * | 2009-06-03 | 2010-12-08 | 厦门三维丝环保股份有限公司 | Method for producing needled and spunlaced composite nonwovens for filter materials |
| CN106854793A (en) * | 2015-12-08 | 2017-06-16 | 东纶科技实业有限公司 | A kind of preparation method of self-bonded nonwoven cloth |
| CN109311263A (en) * | 2016-01-15 | 2019-02-05 | 努泰克处置有限公司 | Nonwoven composite and forming method thereof including natural fiber web |
| CN106835505B (en) * | 2016-12-30 | 2020-06-23 | 青岛大学 | Spunlace nonwoven fabric based on polytetrafluoroethylene membrane and preparation process thereof |
| CN106637680A (en) * | 2016-12-30 | 2017-05-10 | 青岛大学 | Polytetrafluoroethylene filament non-woven fabric based on film tearing method and preparation technology thereof |
| CN106801292B (en) * | 2016-12-30 | 2019-09-24 | 青岛大学 | A kind of spunlace non-woven cloth and its preparation process of ultra high molecular weight polyethylene films |
| CN207632986U (en) * | 2017-03-31 | 2018-07-20 | 深圳全棉时代科技有限公司 | Pure cotton one-way wet-guide non-woven fabrics and cotton urine pants, sanitary napkin |
| CN108166153B (en) * | 2017-12-19 | 2020-09-08 | 杭州诺邦无纺股份有限公司 | Alternate interval spunlace nonwoven material and preparation method thereof |
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