CN109487440B - Combined lapping device and combined lapping process for thin-layer non-woven fabric - Google Patents
Combined lapping device and combined lapping process for thin-layer non-woven fabric Download PDFInfo
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- CN109487440B CN109487440B CN201811644045.7A CN201811644045A CN109487440B CN 109487440 B CN109487440 B CN 109487440B CN 201811644045 A CN201811644045 A CN 201811644045A CN 109487440 B CN109487440 B CN 109487440B
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- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000000835 fiber Substances 0.000 claims abstract description 104
- 238000009960 carding Methods 0.000 claims description 107
- 239000002994 raw material Substances 0.000 claims description 53
- 239000011265 semifinished product Substances 0.000 claims description 27
- 238000012545 processing Methods 0.000 claims description 13
- 238000011282 treatment Methods 0.000 claims description 8
- 239000012535 impurity Substances 0.000 claims description 7
- 238000005303 weighing Methods 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 7
- 239000010410 layer Substances 0.000 description 56
- 239000000047 product Substances 0.000 description 9
- 229920000742 Cotton Polymers 0.000 description 8
- 230000007547 defect Effects 0.000 description 6
- 239000002184 metal Substances 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012937 correction Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/74—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being orientated, e.g. in parallel (anisotropic fleeces)
-
- 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
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
-
- 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
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
- D04H1/736—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged characterised by the apparatus for arranging fibres
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Preliminary Treatment Of Fibers (AREA)
- Nonwoven Fabrics (AREA)
Abstract
The invention discloses a combined lapping device and a combined lapping process of a thin-layer non-woven fabric, which combine parallel lapping and cross lapping to form a combined lapping, and then the upper surface or/and the lower surface of a multi-layer fiber web obtained by cross lapping are paved with fiber webs in parallel to cover surface fiber web gaps formed by cross lapping, thereby improving the proportion of appearance, thickness uniformity and longitudinal and transverse tensile strength; the cross-section profile of the multilayer fiber web is corrected without adopting 'random drawing' which has no obvious effect on the thin-layer non-woven fabric to adjust the longitudinal and transverse tensile strength ratio and a complex control system.
Description
Technical Field
The invention relates to the field of textile machinery, in particular to a combined lapping device and a combined lapping process of a thin-layer non-woven fabric.
Background
In the dry-laid process of nonwoven fabrics, a carding machine is generally used to output one or two webs (single-layer webs), which are laid up to form a multi-layer web, and then bonded, needled or hydroentangled to form the finished product.
The existing layering and lapping modes mainly have two types: parallel and cross.
Parallel lapping, adopting more than 1 carding machine or at least one double doffer carding machine, overlapping the fiber web into multiple layers in the output direction, the input speed of the fiber web in the lapping mode can reach 100-150 m/min, and the obtained multilayer fiber web has good appearance and thickness uniformity; the defects are that: the number of layers of the fiber web of the finished product cannot be too large, a plurality of carding machines are needed, the breadth is limited by the output breadth of the carding machines, and the longitudinal and transverse tensile strength ratio is 3:1-5:1.
Cross lapping, wherein the fiber web output by the carding machine is vertically or almost vertically lapped in the conveying direction of a conveying curtain of a cross lapping machine to form a multi-layer fiber web with preset width and thickness (layer number), the layer number of the fiber web can be 2-60 layers, the width can be adjusted within the range of 2-7 m, and the longitudinal and transverse tensile strength ratio is adjusted through 'random drafting'; the defects are that: web input speeds typically are less than 100m/min, requiring complex control systems for multi-layer web cross-sectional profile modification to avoid thin middle and thick edges.
The present application defines a laminar nonwoven fabric as: a nonwoven fabric made from 3 to 20 layers of webs. When the cross lapping is adopted in the manufacture of the existing thin-layer non-woven fabric, the effect of the 'random drafting' treatment is not obvious as that of more layers of non-woven fabrics, and the appearance and thickness uniformity of the product are poor.
These drawbacks severely limit the further forward development and popularization of the field.
Accordingly, the present invention is directed to a new solution to solve the existing technical drawbacks.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a combined lapping device and a combined lapping process of a thin-layer non-woven fabric, which solve the technical defects of poor appearance and thickness uniformity, poor longitudinal and transverse tensile strength and the like in the prior art.
One aspect of the technical scheme adopted by the invention for solving the technical problems is as follows:
A combined lapping device of a thin nonwoven fabric, which comprises a fiber raw material supply device, a combined lapping device and a multi-layer fiber net fixing device, wherein the combined lapping device is arranged between the fiber raw material supply device and the multi-layer fiber net fixing device; the inside cross lapping equipment that sets up of combination lapping device: first carding machine, cross lapping machine and parallel lapping device: a second carding machine; the input ends of the first carding machine and the second carding machine are connected with the fiber raw material supply device, the output end of the first carding machine is connected with the input end of the cross lapping machine, a net conveying curtain for outputting a cross lapped fiber net is arranged in the cross lapping machine, and the output end of the net conveying curtain is connected with the multi-layer fiber net fixing device; the output end of the second carding machine is connected with the output end of the net conveying curtain so as to enable the upper surface of the cross-lapped semi-finished product after cross lapping to be parallel lapped, or the output end of the second carding machine is connected with the input end of the net conveying curtain so as to enable the lower surface of the cross-lapped semi-finished product after cross lapping to be parallel lapped in advance.
Further, the output end of the second carding machine is connected with the output end of the net conveying curtain so as to enable parallel lapping on the cross lapping semi-finished product after cross lapping, the parallel lapping device further comprises a third carding machine, and the output end of the third carding machine is connected with the input end of the net conveying curtain so as to enable parallel lapping below the cross lapping semi-finished product after cross lapping in advance.
Further, the carding machine further comprises a drawing mechanism, one drawing mechanism is arranged between the second carding machine and the cross lapping machine, and the other drawing mechanism is arranged between the third carding machine and the cross lapping machine.
The technical scheme adopted by the invention for solving the technical problems is as follows:
The combined lapping process of the thin non-woven fabric adopts the combined lapping device of the thin non-woven fabric and comprises the following processing steps:
step one: feeding raw materials through the fiber raw material feeding device, wherein the fiber raw material feeding device feeds the raw materials to a first carding machine, a second carding machine and a third carding machine in the combined lapping device;
Step two: processing a part of raw materials by a first carding machine in the combined lapping device, processing a part of raw materials by a second carding machine in the combined lapping device, and processing a part of raw materials by a third carding machine in the combined lapping device;
Step three: the fiber web obtained through the first carding machine treatment enters a cross lapping machine to be subjected to cross lapping treatment and form a cross lapping semi-finished product, the fiber web obtained through the third carding machine treatment is paved below the cross lapping semi-finished product in advance, and the fiber web obtained through the second carding machine treatment is paved above the cross lapping semi-finished product;
step four: and (3) carrying out a web fixing operation on the multi-layer web formed in the step (III) through a multi-layer web fixing device.
Further, the cross-lapper crossplies the web in 2 to 16 layers.
Further, the second carding machine and the third carding machine process the obtained web to be 1 layer or 2 layers.
Further, the web obtained by the second carding machine and the third carding machine is processed, and the width of the web is adjustable through the stretching mechanism.
The beneficial effects of the invention are as follows: combining parallel lapping and cross lapping, and then parallel lapping the fiber webs on the upper surface or/and the lower surface of the multi-layer fiber web obtained by cross lapping, and covering the surface fiber web gaps formed by cross lapping, thereby improving the proportion of appearance, thickness uniformity and longitudinal and transverse tensile strength.
In a word, the combined lapping device and the combined lapping process of the thin-layer non-woven fabric solve the technical defects of poor appearance and thickness uniformity, poor longitudinal and transverse tensile strength and the like in the prior art, do not need to adjust the longitudinal and transverse tensile strength ratio by adopting 'disordered drafting' with insignificant effect on the thin-layer non-woven fabric, and do not need to carry out multi-layer fiber web cross section profile correction by a complex control system.
Drawings
The invention will be further described with reference to the drawings and examples.
Figure 1 is a flow chart of embodiment 1 of the present invention,
Figure 2 is a flow chart of embodiment 2 of the present invention,
Figure 3 is a schematic diagram of the drawing mechanism of the present invention,
Figure 4 is a flow chart of embodiment 3 of the present invention,
Figure 5 is a schematic view of the first carding machine according to the invention,
Figure 6 is a schematic view of the structure of a second carding machine according to the invention,
Fig. 7 is a schematic view of the cross lapping machine of the present invention.
Detailed Description
The conception, specific structure, and technical effects produced by the present invention will be clearly and completely described below with reference to the embodiments and the drawings to fully understand the objects, features, and effects of the present invention. It is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and that other embodiments obtained by those skilled in the art without inventive effort are within the scope of the present invention based on the embodiments of the present invention. In addition, all the coupling/connection relationships referred to in the patent are not direct connection of the single-finger members, but rather, it means that a better coupling structure can be formed by adding or subtracting coupling aids depending on the specific implementation. The technical features in the invention can be interactively combined on the premise of no contradiction and conflict.
Referring to fig. 1, example 1 of a combined lapping device of a thin nonwoven fabric includes a fiber raw material supply device 200, a combined lapping device 100, a multi-layer web fixing device 300, the combined lapping device 100 being disposed between the fiber raw material supply device 200 and the multi-layer web fixing device 300; the cross-lapping device is arranged inside the combined lapping device 100: first carding machine 110, cross lapping machine 120, and parallel lapping apparatus: a second carding machine 130; the input ends of the first carding machine 110 and the second carding machine 130 are connected with a fiber raw material supply device 200, the output end of the first carding machine 110 is connected with the input end of the cross lapping machine 120, a net conveying curtain 121 for outputting a cross lapped fiber net is arranged in the cross lapping machine 120, and the output end of the net conveying curtain 121 is connected with a multi-layer fiber net fixing device 300; the output end of the second carding machine 130 is connected with the output end of the net conveying curtain 121 so as to be parallel-laid above the cross-laid semi-finished product after cross-laying, or the output end of the second carding machine 130 is connected with the input end of the net conveying curtain 121 so as to be parallel-laid below the cross-laid semi-finished product after cross-laying in advance.
Example 1 combining parallel and cross-lapping, re-parallel lapping the webs on the upper or/and lower surface of the multi-layer web obtained by cross-lapping, covering the surface web gap formed by cross-lapping, thereby improving the appearance, thickness uniformity and aspect ratio; the cross-section profile of the multilayer fiber web is corrected without adopting 'random drawing' which has no obvious effect on the thin-layer non-woven fabric to adjust the longitudinal and transverse tensile strength ratio and a complex control system.
Referring to fig. 2 and 3, embodiment 2 of the combined lapping device for a sheet nonwoven fabric, based on embodiment 1, further includes a lengthening mechanism 140, the lengthening mechanism 140 being disposed between the second carding machine 130 and the cross lapping machine 120; the drawing mechanism 140 includes a web feed curtain 141 for connecting to the output end of the second carding machine 130, a turning web feed curtain 142 for interfacing with the web feed curtain 141, a press roll 143 for controlling the web above the web feed curtain 141, a first grooved roll 144 and a second grooved roll 145 for drawing the web at the interface of the web feed curtain 141 and the turning web feed curtain 142, the turning web feed curtain 142 interfacing with the output end or input end of the web feed curtain 121. The stretching mechanism 140 conveys the stretched web to be laid out from the second carding machine 130, parallel-laid over the cross-laid multi-layered web, or parallel-laid under the cross-laid multi-layered web in advance.
Example 2 a stretching mechanism 140 is provided between the second carding machine 130 and the cross lapping machine 120 to stretch the web to be tiled, the width of the web to be tiled can be adjusted, the range of the width of the cross lapping semi-finished product which can be adapted is increased, and the longitudinal tensile strength of the multi-layered web finished product after the combined lapping can be enhanced.
Referring to fig. 4, example 3 of the combined fleece layer of the sheet nonwoven, based on example 2, further comprises another combination identical to the combination of "second carding machine 130 and stretching mechanism 140": the parallel lapping apparatus further comprises a third carding machine 150, a further lengthening mechanism 140 being arranged between the third carding machine 150 and the cross lapping machine 120; and, the output end of the third carding machine 150 is connected to the input end of the net-feeding curtain 121 so as to be parallel-laid under the cross-laid semi-finished product after cross-laying in advance, and the output end of the second carding machine 130 is connected to the output end of the net-feeding curtain 121 so as to be parallel-laid over the cross-laid semi-finished product after cross-laying.
Example 3 using a second carding machine 130 and a third carding machine 150 each provided with a drawing mechanism 140, the drawing mechanism 140 conveys the drawn and elongated web to be laid outputted from the second carding machine 130 to be laid parallel on top of the cross-laid semifinished product, and conveys the drawn and elongated web to be laid outputted from the third carding machine 150 to be laid parallel under the cross-laid semifinished product in advance. Therefore, the upper and lower webs of the semi-finished product after cross lapping are covered with the fiber web with the width capable of being adjusted by stretching, and the appearance, thickness uniformity and proportion of longitudinal and transverse tensile strength of the finished product are further improved.
Referring to fig. 5-7, first carding machine 110 outputs a web to cross-lapping machine 120, first carding machine 110 employingDynamic type; the feeding system is provided with a Servo-X autoleveller and a ProDyn autoleveller, so that the longitudinal and transverse flatness of the fiber can be automatically and continuously optimized, the gram weight of the finished product can be controlled on line, and the fiber can be saved.
The cross lapping machine 120 is a machine for lapping the webs outputted from the first carding machine 110 by 2-16 layers, and the cross lapping machine 120 adopts DynamicThe uniformity of the net forming gram weight can be controlled by being provided with ProDyn auto-leveling system.
The second carding machine 130 lays down 1 or 2 layers of webs against the multi-layer web obtained by cross-lapping on the feed curtain 121 of the cross-lapping machine 120; the second carding machine 130 is also employedDynamic type, the breadth reaches 3.75m. The first carding machine 110 and the second carding machine 130 are substantially identical in configuration and structure of the carding units, with the gauge from the intermediate hopper TMS to the cotton feeder TCF, the double cylinder upper rollers being identical; the main difference is the different mechanism of the net forming part behind the double doffer. The second carding machine 130 is provided with a single condensing roller after doffer and adopts the latest triangle cotton stripping device; the fiber is drawn after being disordered by the condensing roller, and the fiber orientation is still close to the longitudinal direction; the fiber net is further stripped by a stripping roller, the fiber net is positioned on the upper surface of the stripping roller, and is adsorbed by an LDS stripping device, and the fiber net is transferred to a breathable net curtain with a plain structure and is connected with the air curtain; the upper layer of fiber web is downwards output, converged with the lower layer of fiber web at the lower stripping roller, and combined with the fiber web after cross lapping and drafting machine processing on the bottom conveying curtain, and conveyed to the next hydroentanglement strengthening process.
The raw material supply device 200 comprises a weighing bale opener, a mixed long curtain, a coarse opener, a cotton mixing box, a fine opener and a pneumatic cotton box; the weighing bale opener firstly weighs the packaged fiber raw materials and then preliminarily disperses the weighed fiber raw materials into small blocks; the mixed long curtain conveys small fiber raw materials to a coarse opener; the coarse opener further disperses the fiber raw material and removes metal impurities; the cotton blending box is used for further Chen Za and mixing the fiber raw materials subjected to dust removal and humidification; the fine opener further disperses the fiber raw material, and the fiber raw material is metered; the pneumatic cotton box temporarily stores the fiber raw material subjected to metal sundries removal again, and the impurity removal and the humidification are completed in an air suction pipeline of the fiber raw material by a corresponding device.
The stretching mechanism 140 is used for stretching the fiber web to be tiled, so that after combined lapping, the longitudinal tensile strength of the finished product is improved, and the defect of small number of layers of the fiber web to be tiled is overcome; the other embodiments of the invention are without adding a stretching mechanism.
An embodiment of a combined lapping process for a laminar nonwoven fabric, employing the combined lapping device for a laminar nonwoven fabric described above, comprises the following processing steps:
Step one: the raw material is supplied by the fiber raw material supply device 200, and the fiber raw material supply device 200 supplies the raw material to the first carding machine 110, the second carding machine 130, and the third carding machine 150 in the combined lapping device 100;
Step two: processing a portion of the feedstock by a first carding machine 110 in the combined lapping device 100, processing a portion of the feedstock by a second carding machine 130 in the combined lapping device 100, and processing a portion of the feedstock by a third carding machine 150 in the combined lapping device 100;
Step three: the web processed by the first carding machine 110 enters a cross lapping machine 120 to be subjected to cross lapping treatment and form a cross lapping semi-finished product, the web processed by the third carding machine 150 is laid under the cross lapping semi-finished product in advance, and the web processed by the second carding machine 130 is laid on the cross lapping semi-finished product;
Step four: the multi-layer web formed in step three is subjected to a web-fixing operation by the multi-layer web-fixing device 300.
The process embodiment combines parallel lapping and cross lapping, and the upper surface or/and the lower surface of the multi-layer fiber web obtained by cross lapping is/are paved in parallel to cover the surface fiber web gap formed by cross lapping, thereby improving the proportion of appearance, thickness uniformity and longitudinal and transverse tensile strength; the cross-section profile of the multilayer fiber web is corrected without adopting 'random drawing' which has no obvious effect on the thin-layer non-woven fabric to adjust the longitudinal and transverse tensile strength ratio and a complex control system.
In this process example, the cross-lapper 120 cross-lays the web between 2 and 16 layers, and the second carding machine 130 and the third carding machine 150 process the web to 1 or 2 layers. The existing high-speed cross lapping machine can adjust the longitudinal and transverse tensile strength ratio of the product by using 'random drawing', and the cross section profile of the multi-layer fiber web is corrected by using a complex control system. These techniques are less effective and costly for finished web layers below 20, especially below 10.
In this process embodiment, the second carding machine 130 and the third carding machine 150 process the resulting web, the breadth of which is adjustable by the stretching mechanism 140. Canceling the prior disordered drawing mechanism and combining with the flat fiber web to balance the longitudinal and transverse strength; the width of the parallel laid web is adjustable, and the width of the direct laid web can be finely adjusted (for example, 80-100%, preferably 90-95% of the cross-laid multi-layer web), so that the control of cross-laid profile correction can be simplified, and the middle thinness and edge thickness can be avoided.
In this process embodiment, the fiber raw material supply device 200 is used to weigh, disperse, remove impurities, etc. the fiber raw material and temporarily store the fiber raw material, and the multi-layer web fixing device 300 is used to fix the web by hydroentangling, needling, thermal bonding or chemical bonding.
Specifically, the re-bale opener of the raw material supply device 200 firstly weighs the packaged fiber raw materials, then preliminarily disperses the packaged fiber raw materials into small blocks, then conveys the small blocks of fiber raw materials to a coarse opener by a mixed long curtain, the coarse opener further disperses the fiber raw materials and removes metal impurities, the cotton blending box further comprises Chen Za and mixes the fiber raw materials subjected to dust removal and humidification, the fine opener further disperses the fiber raw materials, and finally the fiber raw materials subjected to metal impurities removal are temporarily stored by the pneumatic cotton box; carding the fiber raw materials into a single fiber state by a first carding machine 110 to form a netlike fiber thin layer, automatically and continuously optimizing the longitudinal and transverse flatness of the fibers, controlling the gram weight of the finished product on line, and outputting the fiber net to a cross lapping machine 120; cross lapping machine 120 crossplies 2-16 layers of web output from first carding machine 110; tiling 1 or 2 layers of webs from the second carding machine 130 onto the cross-lapping on the feed curtain 121 of the cross-lapping machine 120; the multi-layer web after cross-lapping and flat web combination lapping is hydroentangled, needled, thermally bonded, or chemically bonded by the multi-layer web consolidation device 300.
Further, using a combined lapping device of the thin nonwoven fabric, the fiber raw material supply device performs weighing, dispersing, impurity removing and other treatments on the fiber raw material and temporarily stores the fiber raw material; the combined lapping device is used for carding the fiber raw materials to form a net-shaped fiber thin layer, and carrying out combined lapping of cross lapping and parallel lapping on the fiber thin layer; the multi-layer fiber web after the cross lapping and the flat lapping are combined and lapped by a multi-layer fiber web fixing device for water needling, thermal bonding or chemical bonding, wherein the thermal bonding can be hot air/hot melting, hot pressing/hot rolling and ultrasonic welding.
While the preferred embodiment of the present application has been described in detail, the present application is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present application, and the equivalent modifications or substitutions are included in the scope of the present application as defined in the appended claims.
Claims (5)
1. A combination lapping device of a thin nonwoven fabric, characterized in that: comprises a fiber raw material supply device (200), a combined lapping device (100) and a multi-layer fiber web fixing device (300), wherein the combined lapping device (100) is arranged between the fiber raw material supply device (200) and the multi-layer fiber web fixing device (300);
the combined lapping device (100) is internally provided with cross lapping equipment: a first carding machine (110), a cross lapping machine (120), and a parallel lapping device: a second carding machine (130), a third carding machine (150);
The input ends of the first carding machine (110), the second carding machine (130) and the third carding machine (150) are connected with the fiber raw material supply device (200), the output end of the first carding machine (110) is connected with the input end of the cross lapping machine (120), a first net conveying curtain (121) for outputting a cross lapped fiber net is arranged in the cross lapping machine (120), and the output end of the first net conveying curtain (121) is connected with the multi-layer fiber net fixing device (300);
The output end of the second carding machine (130) is connected with the input end of the first net conveying curtain (121) so as to enable the cross-lapped semi-finished product to be parallel lapped under the cross-lapped semi-finished product; the output end of the third carding machine (150) is connected with the input end of the first net conveying curtain (121) so as to enable the cross-lapped semi-finished product to be parallel lapped under the cross-lapped semi-finished product;
the device also comprises a drawing mechanism, wherein the drawing mechanism comprises a first drawing mechanism and a second drawing mechanism; a first stretching mechanism is arranged between the second carding machine (130) and the cross lapping machine (120), and a second stretching mechanism is arranged between the third carding machine (150) and the cross lapping machine (120);
The stretching mechanism further comprises a second net conveying curtain (141) used for connecting the output end of the second carding machine (130) or the third carding machine (150), a steering net conveying curtain (142) butted with the second net conveying curtain (141), a pressing roller (143) positioned above the second net conveying curtain (141) and used for controlling a fiber web, a first groove roller (144) and a second groove roller (145) positioned at the joint of the second net conveying curtain (141) and the steering net conveying curtain (142) and used for stretching the fiber web, wherein the steering net conveying curtain (142) is butted with the output end or the input end of the first net conveying curtain (121);
a first stretching mechanism conveys the stretched fiber web to be laid, which is output by the second carding machine (130), to be stretched, to be laid in parallel on a semi-finished product after cross-laying; the second stretching mechanism conveys the stretched fiber web to be laid, which is output by the third carding machine (150), to be stretched, to be laid in parallel below the semi-finished product after the cross-lapping in advance;
The web processed by the second carding machine (130) and the third carding machine (150) has a width which is adjustable to 90-95% of the cross-lapped web width by the stretching mechanism.
2. A process for the combined lapping of thin nonwoven fabrics, which adopts the combined lapping device of the thin nonwoven fabrics as claimed in claim 1, and is characterized in that: the method comprises the following processing steps:
Step one: feeding raw materials through a fiber raw material feeding device (200), wherein the fiber raw material feeding device (200) feeds the raw materials to a first carding machine (110), a second carding machine (130) and a third carding machine (150) in a combined lapping device (100);
Step two: processing a portion of the feedstock by a first carding machine (110) in the combined lapping device (100), processing a portion of the feedstock by a second carding machine (130) in the combined lapping device (100), and processing a portion of the feedstock by a third carding machine (150) in the combined lapping device (100);
step three: the fiber web processed by the first carding machine (110) enters a cross lapping machine (120) to be subjected to cross lapping treatment and form a cross lapping semi-finished product, the fiber web processed by the third carding machine (150) is paved below the cross lapping semi-finished product in advance, and the fiber web processed by the second carding machine (130) is paved above the cross lapping semi-finished product;
step four: the multi-layer web formed in step three is subjected to a web-fastening operation by a multi-layer web-fastening device (300).
3. A process for the combined lapping of a laminar nonwoven fabric according to claim 2, characterized in that: the cross-lapping machine (120) lays the webs in 2-16 layers.
4. A process for the combined lapping of a laminar nonwoven fabric according to claim 2, characterized in that: the fiber raw material supply device (200) is used for weighing, dispersing, removing impurities and the like of the fiber raw material and temporarily storing the fiber raw material.
5. A process for the combined lapping of a laminar nonwoven fabric according to claim 2, characterized in that: the multi-layer web fastening device (300) is operated by hydroentangling, needling, thermal bonding or chemical bonding.
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| CN110438663A (en) * | 2019-07-31 | 2019-11-12 | 苏州鸿源特种纤维制品有限公司 | A kind of cross lapping machine and its production technology for non-woven cloth |
| CN110644142B (en) * | 2019-09-29 | 2021-08-13 | 常熟市伟成非织造成套设备有限公司 | Method for preparing non-woven fabric product |
| CN111826806A (en) * | 2020-06-30 | 2020-10-27 | 榆林市锦龙羊毛绒制品有限公司 | Non-woven fabric lapping device and application thereof in non-woven fabric production |
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