CN108754866B - Preparation method of elastic non-woven fabric and elastic non-woven fabric - Google Patents
Preparation method of elastic non-woven fabric and elastic non-woven fabric Download PDFInfo
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- CN108754866B CN108754866B CN201810291620.3A CN201810291620A CN108754866B CN 108754866 B CN108754866 B CN 108754866B CN 201810291620 A CN201810291620 A CN 201810291620A CN 108754866 B CN108754866 B CN 108754866B
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- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 61
- 238000002360 preparation method Methods 0.000 title description 13
- 239000002131 composite material Substances 0.000 claims abstract description 150
- 239000000835 fiber Substances 0.000 claims abstract description 133
- 238000000034 method Methods 0.000 claims abstract description 33
- 238000010438 heat treatment Methods 0.000 claims abstract description 24
- 230000000149 penetrating effect Effects 0.000 claims abstract description 18
- 230000037303 wrinkles Effects 0.000 claims abstract description 9
- 238000000926 separation method Methods 0.000 claims description 25
- 238000002955 isolation Methods 0.000 claims description 17
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- 239000000463 material Substances 0.000 claims description 9
- 238000007596 consolidation process Methods 0.000 claims description 7
- 239000000126 substance Substances 0.000 claims description 7
- 239000004744 fabric Substances 0.000 claims description 4
- 239000004750 melt-blown nonwoven Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000009940 knitting Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 2
- 101100334009 Caenorhabditis elegans rib-2 gene Proteins 0.000 description 19
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- 238000005265 energy consumption Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
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Classifications
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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
- D04H1/52—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 applying or inserting filamentary binding elements
-
- 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
- D04H1/45—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 forming intermeshing loops or stitches from some of the fibres
Abstract
A method for preparing elastic non-woven fabric includes setting multiple elastic ribs on back surface of fiber net in parallel and equidistant mode along length or width direction, leading multiple composite filaments on front surface of fiber net in length direction, penetrating composite filaments into and out of fiber net repeatedly to solidify two ends of each elastic rib on back surface of fiber net to obtain solidified net body, advancing composite filaments in reciprocating mode along length direction of fiber net in width direction of fiber net, putting solidified net body into thermal environment for heat treatment to form fiber net with wrinkles. The design is strong in elasticity, can adjust elasticity transversely and longitudinally in two directions, and is strong in independence of elasticity adjustment, low in cost and wide in application range.
Description
Technical Field
The invention relates to elastic non-woven fabric, belongs to the technical field of spinning, and particularly relates to a preparation method of elastic non-woven fabric and the elastic non-woven fabric, which are particularly suitable for enhancing elasticity and can adjust the elasticity in a transverse and longitudinal direction.
Background
The non-woven fabric is formed by orienting or randomly arranging textile fibers to form a fiber net structure and then reinforcing the fiber net structure by adopting mechanical, thermal bonding or chemical methods and the like, and has the characteristic of crossing multi-disciplinary technology. In recent years, the application field of the non-woven fabric is continuously expanded, the non-woven fabric is rapidly developed in the textile field, is considered as a new economic growth point for the development of the textile industry in the future, can be widely applied to the fields of clothing, household textiles, medical and health materials and the like, and receives the attention of various research institutions and enterprises.
The appearance of the elastic non-woven fabric not only widens the application field of the existing non-woven fabric, but also improves the added value of the non-woven fabric. For example, in the clothing field, the elastic non-woven fabric can adapt to the movement of a human body, has the advantages of close fitting, comfort and the like, and improves the comfort and the corresponding functionality of the clothing; the home textile can be used in the fields of head leather, shoe covers, bedspread, quilt cover, home textile cladding material, lining material and the like, and can meet the requirements of home textile on the appearance or the elastic function of products; in the field of industrial textiles, in particular to medical and sanitary materials, the technical scheme that the elastic non-woven fabric is compounded with other non-woven fabrics and the like can meet the requirements of certain medical and sanitary materials, and can be widely applied to products such as bandages, sanitary napkins, paper diapers and the like. Along with the development of non-woven technology, the application field of elastic non-woven fabric is continuously expanded, but the existing processing technology of non-woven fabric has the defects of complicated operation steps, high energy consumption and insufficient product elasticity, and more importantly, the elastic non-woven fabric with adjustable transverse elasticity and longitudinal elasticity is difficult to manufacture in the prior art.
The disclosure of this background section is only intended to increase the understanding of the general background of the present patent application and should not be taken as an admission or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.
Disclosure of Invention
The invention aims to overcome the defects and problems that the elasticity is weak and the elasticity cannot be regulated transversely and longitudinally in the prior art, and provides a preparation method of an elastic nonwoven fabric with strong elasticity and capable of regulating the elasticity transversely and longitudinally and the elastic nonwoven fabric.
In order to achieve the above object, the technical solution of the present invention is: a method for preparing elastic non-woven fabric; the preparation method comprises the following steps:
the web stitch bonding process: arranging a plurality of elastic ribs on the back surface of a fiber web at equal intervals in parallel, arranging the elastic ribs in the same direction along the length direction or the width direction of the fiber web, then introducing a plurality of composite filaments on the front surface of the fiber web in parallel, wherein the introducing direction of the composite filaments is along the length direction of the fiber web, and the stitch-bonding mode after introducing the composite filaments is that the fiber web is repeatedly penetrated and penetrated so as to fixedly bond the two ends of each elastic rib on the back surface of the fiber web, so as to obtain a fixed web body; the joint of the elastic ribs and the composite filaments is a fixed joint, and two ends of each elastic rib are provided with a fixed joint; each composite filament advances in a reciprocating swinging manner along the length direction of the fiber web in the integral process of penetrating and penetrating the fiber web, the swinging direction is the width direction of the fiber web, and the stitch-bonding modes of adjacent composite filaments are the same;
The crease heat treatment process comprises the following steps: and (3) placing the fixed net body into a thermal environment for heat treatment, wherein the composite filaments are heated and shrunk to form filaments with a curled structure, and the curled filaments drive the fiber net and the elastic rib to shrink to form the fiber net with wrinkles, so that the elastic non-woven fabric is obtained.
When the arranging direction of the elastic ribs is along the length direction of the fiber net, the elastic ribs are in a plurality of elastic rib courses parallel to the length direction of the fiber net on the back surface of the fiber net, a plurality of elastic ribs which are flush along the length direction are arranged in each elastic rib course, the two ends of each elastic rib are respectively a head end and a tail end, and at the moment, the stitch-bonding mode of the single composite filament is any one of the following modes:
mode one: the method comprises the steps that firstly, any elastic rib row is defined as an original elastic rib row, the original elastic rib row sequentially comprises an original elastic rib and an original two-elastic rib … … along the length direction, then a single composite filament with the leading-in direction opposite to the original elastic rib row is taken, the composite filament firstly penetrates out of the outer side of the original first end of the original elastic rib, passes over the original first end, penetrates into the inner side of the original first end, then penetrates out of the outer side of the original first tail end, passes over the original second tail end, penetrates into the inner side of the original first tail end, then penetrates out of the outer side of the original two-elastic rib, passes over the original two-tail end, penetrates into the inner side of the original two-tail end, … …, and sequentially proceeds until all the elastic ribs in the original elastic rib row are experienced;
Mode two: the method comprises the steps that firstly, any elastic rib row is defined as an original elastic rib row, the original elastic rib row sequentially comprises an original first elastic rib, an original second elastic rib and an original third elastic rib … … along the length direction, then any elastic rib row adjacent to the original elastic rib row is defined as an adjacent elastic rib row, the adjacent elastic rib row sequentially comprises an adjacent elastic rib, an adjacent second elastic rib and an adjacent third elastic rib … … along the length direction, then a single composite filament with the leading-in direction opposite to the original elastic rib row is taken, the composite filament penetrates out of the outer side of the original first end of the original elastic rib, penetrates in from the inner side of the adjacent second end after sequentially crossing the original first end and the adjacent second end, penetrates out of the outer side of the original second end and the adjacent second end after sequentially crossing the original second end and the adjacent second end, and then sequentially penetrates out of the outer side of the original third end, and … … is carried out until all elastic ribs in the original elastic rib row are experienced;
mode three: the method comprises the steps that firstly, any elastic rib row is defined as an original elastic rib row, the original elastic rib row sequentially comprises an original first elastic rib, an original second elastic rib, an original third elastic rib, an original fourth elastic rib and an original fifth elastic rib … … along the length direction, then, any elastic rib row which is not adjacent to the original elastic rib row is defined as an elastic rib isolation row, the elastic rib isolation row sequentially comprises an elastic rib isolation, two elastic ribs isolation, three elastic ribs isolation, four elastic ribs isolation and five elastic ribs … … along the length direction, then, a single composite filament with the leading-in direction opposite to the original elastic rib row is taken out, the composite filament penetrates from the inner side of the two elastic ribs isolation after sequentially crossing the original first end and the two first ends, penetrates from the outer side of the three first ends, sequentially crosses the three first ends and the four first ends isolation, penetrates from the outer side of the five first ends … …, and sequentially goes on until all elastic ribs in the original elastic rib row are experienced.
When the arranging direction of the elastic ribs is along the width direction of the fiber net, the elastic ribs are arranged in a plurality of elastic rib vertical columns parallel to the length direction of the fiber net on the back surface of the fiber net, a plurality of elastic ribs perpendicular to the length direction are arranged in each elastic rib vertical column, the two ends of each elastic rib are respectively the top end and the bottom end, and at the moment, the stitch-bonding mode of the single composite filament is any one of the following modes:
mode one: firstly, any elastic rib vertical column is defined as an original vertical column, the original vertical column sequentially comprises a vertical elastic rib, two vertical elastic ribs and … … along the length direction, then a single composite filament with the leading-in direction opposite to the bottom ends of the elastic ribs in the original vertical column is taken, the composite filament firstly penetrates out from the outer side of one vertical bottom end of the vertical elastic rib, penetrates in from the inner side of one vertical bottom end after crossing over the vertical bottom end, then penetrates out from the outer side of two vertical bottom ends, penetrates in from the inner side of two vertical bottom ends after crossing over the two vertical bottom ends, … … is sequentially carried out until the bottom ends of all the elastic ribs in the original vertical column are experienced, and the stitch mode of the top ends of the elastic ribs is consistent with the bottom ends;
mode two: the method comprises the steps that firstly, any elastic rib vertical column is defined as an original vertical column, a vertical elastic rib, two vertical elastic ribs and three vertical elastic ribs … … are sequentially arranged in the original vertical column along the length direction, then, any elastic rib vertical column adjacent to the original vertical column is defined as an adjacent vertical column, an adjacent elastic rib, two adjacent elastic ribs and three adjacent elastic ribs … … are sequentially arranged in the adjacent vertical column along the length direction, then, a single composite filament with the leading-in direction opposite to the original vertical column is taken, the composite filament firstly penetrates out of the outer side of the vertical top end of the first vertical elastic rib, penetrates in from the inner side of the vertical top end after crossing the vertical top end, penetrates out of the outer side of the two adjacent bottom ends of the two adjacent elastic ribs, penetrates in from the inner side of the two adjacent bottom ends, penetrates out of the three vertical top ends, and … … sequentially goes on until all the elastic ribs in the original vertical column are experienced;
Mode three: the method comprises the steps of firstly, setting any elastic rib column as an original column, sequentially comprising a vertical elastic rib, two vertical elastic ribs, three vertical elastic ribs, four vertical elastic ribs and five vertical elastic ribs … … along the length direction in the original column, setting any elastic rib column which is not adjacent to the original column as a separate column, sequentially comprising a separate elastic rib, two separate elastic ribs and three separate elastic ribs … … along the length direction in the separate column, then taking a single composite filament which is opposite to the original column in the leading-in direction, penetrating out of the outer side of one vertical top end of the first vertical elastic rib, penetrating in the inner side of the first vertical top end after crossing the first vertical top end, penetrating out of the outer side of the two separate bottom ends of the second separate elastic rib, penetrating in the inner side of the second separate bottom end, penetrating out of the outer side of the five separate bottom ends, penetrating in the inner side of the five separate bottom ends, and sequentially, and penetrating in the inner side of the five separate top ends … … until all elastic ribs in the original column are experienced.
And two ends of the elastic rib are respectively connected with an elastic ring, and when the composite filament penetrates into or out of the two ends of the elastic rib, the composite filament is wound around the elastic ring at least once and then subjected to the next penetrating or out operation.
When the composite filament is stitch-bonded, the elastic rib is in a pulled-up state.
On the back surface of the fiber net, a plurality of additional elastic yarns are arranged at equal intervals in parallel along the length or width direction of the fiber net, the additional elastic yarns refer to elastic yarns or elastic yarns, the additional elastic yarns are clung to the back surface of the fiber net and are perpendicular to the direction of elastic ribs, when the composite filaments repeatedly penetrate into and penetrate out of the fiber net to fixedly bond two ends of each elastic rib on the back surface of the fiber net, the composite filaments repeatedly penetrate into and penetrate out of the fiber net to fixedly bond each additional elastic yarn on the back surface of the fiber net, each composite filament and the corresponding additional elastic yarn are required to be connected for a plurality of times, each connecting point is called an additional joint, and a plurality of mutually independent and spaced additional joints are arranged on each additional elastic yarn along the trend.
The heat treatment of the fixed net body in a thermal environment means that: and (3) putting the solidified net body into hot steam or hot water for heat treatment, wherein the temperature is 90-160 ℃ and the time is 15-30 min.
The fiber web is made of natural fibers or chemical short fibers or a mixture of natural fibers and chemical short fibers, and a layer of spunbonded nonwoven fabric, melt-blown nonwoven fabric, dry nonwoven fabric, wet nonwoven fabric, elastic nonwoven fabric or breathable film is compounded on the surface of the fiber web.
The composite filament is a PET and PTT double-component parallel composite filament.
An elastic nonwoven; the elastic nonwoven is prepared according to the preparation method of the elastic nonwoven.
Compared with the prior art, the invention has the beneficial effects that:
1. in the preparation method of the elastic nonwoven fabric and the elastic nonwoven fabric, on the basis of the existing fiber web, the front surface of the fiber web is provided with the composite filaments along the length direction of the fiber web, the back surface of the fiber web is provided with the elastic ribs along the length or width direction of the fiber web, and the composite filaments, the fiber web and the elastic ribs are fixedly combined into a whole through stitch bonding of the composite filaments, the preparation method has the advantages that: firstly, composite filaments and elastic ribs are added, so that the elasticity is improved as a whole; secondly, when the composite filaments are stitch-bonded, the composite filaments advance in a reciprocating swing mode along the length direction of the fiber web, and the swing direction is the width direction of the fiber web, so that the composite filaments can strengthen the elasticity in the length direction and the width direction and can adjust the elasticity in the two directions; and thirdly, the arrangement of the elastic ribs can be in the length direction or the width direction, so that the elasticity of the product in the length direction and the width direction is further enhanced, and the adjusting function of the elasticity in the two directions is also enhanced. Therefore, the invention has stronger elasticity and can adjust elasticity in both the transverse and longitudinal directions.
2. According to the preparation method of the elastic nonwoven fabric and the elastic nonwoven fabric, the composite filaments are used for fixedly connecting the two ends of each elastic rib on the back surface of the fiber web, the two ends of each elastic rib are provided with the fixedly connected points formed by connecting the elastic ribs and the composite filaments, the fixedly connected points can be used for integrally fixedly connecting the composite filaments, the fiber web and the elastic ribs, adjacent elastic ribs can be separated from each other through the fixedly connected points, so that each elastic rib can independently exert the respective elastic effect, and one stretch can not affect the other. Therefore, the invention has stronger independence of elasticity regulation and does not interfere with each other.
3. In the preparation method of the elastic nonwoven fabric and the elastic nonwoven fabric, a plurality of additional elastic yarns (the additional elastic yarns refer to elastic yarns or elastic yarns) which are perpendicular to the direction of elastic ribs can be arranged on the back surface of a fiber net, the additional elastic yarns are fixedly connected on the back surface of the fiber net by composite filaments, each composite filament and the corresponding additional elastic yarn need to be connected for a plurality of times, a plurality of additional joints which are mutually independent and are arranged at intervals exist along the trend of each additional elastic yarn, and the design has the advantages that: firstly, on the basis of the composite filament and the elastic rib, the overall elastic force is enhanced again; secondly, elastic parts in two directions, namely elastic ribs and additional elastic wires, naturally exist, so that the elasticity and the adjusting function in the two directions are further enhanced; and the additional elastic yarn is divided into mutually independent sections by the additional joints, the joints are segmented, the stress of each section is different, each section is not interfered with each other, and one section is stretched without affecting the other sections. Therefore, the invention has the advantages of strong elasticity, capability of adjusting elasticity transversely and longitudinally, strong independence of elastic adjustment and no interference with each other.
4. In the preparation method of the elastic non-woven fabric and the elastic non-woven fabric, only two processes of a fiber net stitch knitting process and a crease heat treatment process are included in the manufacturing process of the elastic non-woven fabric, the process steps are few, the labor is saved, the energy consumption is reduced, and the method has no special requirements on the manufacturing process and raw materials of the fiber net and has wide adaptability. Therefore, the invention has low cost and wide application range.
Drawings
Fig. 1 is a schematic structural view of the present invention.
FIG. 2 is a schematic stitch-bonding diagram of a composite filament and a raw stretch yarn array in accordance with the present invention.
FIG. 3 is a schematic stitch-bonding diagram of a composite filament with an original elastic strand and an adjacent elastic strand in the present invention.
FIG. 4 is a schematic stitch-bonding diagram of a composite filament with an original array of elastic strands and a separate array of elastic strands in the present invention.
FIG. 5 is a schematic stitch-bonding diagram of composite filaments and an original column in the present invention.
FIG. 6 is a schematic stitch-bonding diagram of a composite filament with an original column, an adjacent column, in accordance with the present invention.
FIG. 7 is a schematic stitch-bonding diagram of composite filaments with the original columns and alternate columns in the present invention.
FIG. 8 is a schematic illustration of the placement of the stretch band and additional stretch filaments in the present invention.
Fig. 9 is a schematic view of the wrapping of the composite filament with the elastic band of the present invention.
In the figure: the fiber net 1, the elastic rib 2, the elastic ring 21, the composite filament 3, the consolidation point 31, the elastic rib horizontal row 4, the original elastic rib row 5, the original first elastic rib 51, the original first head end 511, the original first tail end 512, the original second elastic rib 52, the original second head end 521, the original second tail end 522, the original third elastic rib 53, the original third head end 531, the original fourth elastic rib 54, the original fifth elastic rib 55, the original fifth head end 551, the adjacent elastic rib row 6, the adjacent first elastic rib 61, the adjacent first tail end 612, the adjacent second elastic rib 62, the adjacent second tail end 622, the adjacent third elastic rib 63, the spaced elastic rib row 7, the spaced elastic rib 71, the spaced elastic rib 72, the spaced elastic rib 73, the spaced elastic rib 74, the spaced elastic rib 741, the spaced elastic rib 75, the elastic rib vertical row 8, the original vertical row 9, the first vertical elastic rib 91, the first vertical top 911, the first vertical bottom end 92, the second vertical bottom end 922, the second vertical bottom end 92, the third vertical bottom 922, the third vertical end 93, the additional elastic rib 93, the adjacent elastic rib 95, the adjacent first elastic rib 11, the adjacent third elastic rib 11, the adjacent elastic rib 12, the adjacent third elastic rib 11, the adjacent first elastic rib 11, the adjacent third elastic rib 12, the adjacent third elastic rib 11, the adjacent elastic rib 12, the adjacent third elastic rib row 11. In the figure, when the elastic rib is arranged along the length direction, the lower part of the elastic rib is taken as the outer side, the upper part is taken as the inner side, the left end of the elastic rib is taken as the head end, and the right end is taken as the tail end; when the elastic rib is arranged along the width direction, the left side of the elastic rib is taken as the outer side, the right side is taken as the inner side, the upper end of the elastic rib is taken as the head end, and the lower end is taken as the tail end.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings and detailed description.
Referring to fig. 1-9, a method for preparing an elastic nonwoven fabric, the method comprising the following steps:
the web stitch bonding process: firstly, arranging a plurality of elastic tendons 2 in parallel at equal intervals on the back surface of a fiber web 1, wherein the arranging directions of the elastic tendons 2 are consistent, namely, the arranging directions are along the length direction or the width direction of the fiber web 1, then, a plurality of composite filaments 3 are led in parallel on the front surface of the fiber web 1, the leading-in direction of the composite filaments 3 is along the length direction of the fiber web 1, and the stitch-bonding mode after the composite filaments 3 are led in and out of the fiber web 1 repeatedly so as to fix the two ends of each elastic tendon 2 on the back surface of the fiber web 1, so as to obtain a fixed web body; the joint of the elastic ribs 2 and the composite filaments 3 is a consolidation point 31, and two ends of each elastic rib 2 are provided with a consolidation point 31; each composite filament 3 advances in a reciprocating swinging manner along the length direction of the fiber web 1 in the integral process of penetrating and penetrating the fiber web 1, the swinging direction is the width direction of the fiber web 1, and the stitch-bonding modes of adjacent composite filaments 3 are the same;
the crease heat treatment process comprises the following steps: and (3) placing the fixed net body into a thermal environment for heat treatment, wherein the composite filaments 3 are deformed by heat shrinkage to form filaments with a curled structure, and the curled filaments drive the fiber net 1 and the elastic rib 2 to shrink so as to form a fiber net with wrinkles, namely the elastic non-woven fabric.
When the direction of the elastic rib 2 is along the length direction of the fiber web 1, the elastic rib 2 presents a plurality of elastic rib courses 4 parallel to the length direction of the fiber web 1 on the back surface of the fiber web 1, a plurality of elastic ribs 2 which are flush along the length direction are arranged in each elastic rib course 4, the two ends of each elastic rib 2 are respectively a head end and a tail end, and at the moment, the stitch-bonding mode of the single composite filament 3 is any one of the following modes:
mode one: the method comprises the steps that firstly, any elastic rib row 4 is defined as an original elastic rib row 5, the original elastic rib row 5 sequentially comprises an original first elastic rib 51 and an original second elastic rib 52 … … along the length direction, then a single composite filament 3 with the leading-in direction opposite to the original elastic rib row 5 is taken, the composite filament 3 firstly penetrates out of the outer side of an original first head end 511 of the original first elastic rib 51, penetrates out of the inner side of the original first head end 511 after crossing the original first head end 511, penetrates out of the outer side of an original first tail end 512 after crossing the original first tail end 512, penetrates out of the inner side of the original first tail end 512, penetrates out of the outer side of an original second head end 521 after crossing the original second head end 521, penetrates out of the inner side of the original second tail end 522, penetrates out of the inner side of the original second tail end 522, and … …, and sequentially goes on until all elastic ribs 2 in the original elastic rib row 5 are experienced;
Mode two: any elastic rib row 4 is defined as an original elastic rib row 5, the original elastic rib row 5 sequentially comprises an original first elastic rib 51, an original second elastic rib 52 and an original third elastic rib 53 … … along the length direction, any elastic rib row 4 adjacent to the original elastic rib row 5 is defined as an adjacent elastic rib row 6, the adjacent elastic rib row 6 sequentially comprises an adjacent first elastic rib 61, an adjacent second elastic rib 62 and an adjacent third elastic rib 63 … … along the length direction, then a single composite filament 3 with the leading-in direction opposite to the original elastic rib row 5 is taken, the composite filament 3 sequentially penetrates out of the original first end 511 of the original first elastic rib 51, sequentially spans the original first end 511 and the adjacent second end 612, penetrates in from the inner side of the adjacent first end 612, penetrates out of the original second end 521 and the adjacent second end 622, sequentially penetrates out of the original third end 531, and then penetrates out of the first end … … from the outer side of the original third end 521 until all elastic ribs 2 in the original elastic rib row 5 are experienced;
mode three: any elastic rib row 4 is an original elastic rib row 5, the original elastic rib row 5 sequentially comprises an original first elastic rib 51, an original second elastic rib 52, an original third elastic rib 53, an original fourth elastic rib 54 and an original fifth elastic rib 55 … … along the length direction, any elastic rib row 4 which is not adjacent to the original elastic rib row 5 is an elastic rib row 7, the elastic rib row 7 sequentially comprises a first elastic rib 71, a second elastic rib 72, a third elastic rib 73, a fourth elastic rib 74 and a fifth elastic rib 75 … … along the length direction, then a single composite filament 3 which is opposite to the original elastic rib row 5 in the guiding direction is taken, the composite filament 3 sequentially penetrates from the outer side of the original first elastic rib 511, sequentially spans the original first end 511, the second elastic rib 721, the inner side of the second elastic rib 721, the third elastic rib 531, sequentially penetrates from the outer side of the original third elastic rib row 531, sequentially spans the first three elastic rib 531, the fourth elastic rib 74 and the fifth elastic rib 75, sequentially penetrates from the first elastic rib row 741 to the outer side of the original elastic rib row 35, and sequentially stretches from the first elastic rib row 35 to the second elastic rib row 5.
When the arranging direction of the elastic ribs 2 is along the width direction of the fiber net 1, the elastic ribs 2 are arranged on the back surface of the fiber net 1 to form a plurality of elastic rib vertical columns 8 parallel to the length direction of the fiber net 1, a plurality of elastic ribs 2 perpendicular to the length direction are arranged in each elastic rib vertical column 8, the two ends of each elastic rib 2 are respectively provided with a top end and a bottom end, and at the moment, the stitch-bonding mode of the single composite filament 3 is any one of the following modes:
mode one: firstly, any elastic rib vertical column 8 is an original vertical column 9, the original vertical column 9 sequentially comprises a vertical elastic rib 91 and two vertical elastic ribs 92 and … … along the length direction, then a single composite filament 3 with the leading-in direction opposite to the bottom end of the elastic rib 2 in the original vertical column 9 is taken, the composite filament 3 firstly penetrates out from the outer side of a vertical bottom end 912 of the vertical elastic rib 91, passes through the vertical bottom end 912, penetrates into the inner side of the vertical bottom end 912, then penetrates out from the outer side of the two vertical bottom ends 922, passes through the two vertical bottom ends 922, penetrates into … … from the inner side of the two vertical bottom ends 922, and sequentially goes on until the bottom ends of all the elastic ribs 2 in the original vertical column 9 are experienced, and the stitch-bonding mode of the top ends of the elastic ribs 2 is consistent with the bottom ends;
mode two: firstly, any elastic rib vertical column 8 is defined as an original vertical column 9, the original vertical column 9 sequentially comprises a vertical elastic rib 91, two vertical elastic ribs 92 and three vertical elastic ribs 93 and … … along the length direction, then any elastic rib vertical column 8 adjacent to the original vertical column 9 is defined as an adjacent vertical column 10, the adjacent vertical column 10 sequentially comprises an adjacent elastic rib 101, two adjacent elastic ribs 102 and three adjacent elastic ribs 103 and … … along the length direction, then a single composite filament 3 with the leading-in direction opposite to the original vertical column 9 is taken, the composite filament 3 passes through the outer side of a vertical top end 911 of the first vertical elastic rib 91, passes through the inner side of the vertical top end 911, passes through the outer side of two adjacent bottom ends 104 of the second adjacent elastic rib 102, passes through the inner side of the two adjacent bottom ends 104, passes through the outer side of the three vertical top ends 931, and … … sequentially goes through all elastic ribs 2 in the original vertical column 9;
Mode three: any elastic rib column 8 is an original column 9, the original column 9 sequentially comprises a vertical elastic rib 91, two vertical elastic ribs 92, three vertical elastic ribs 93, four vertical elastic ribs 94 and five vertical elastic ribs 95 … … along the length direction, any elastic rib column 8 which is not adjacent to the original column 9 is a separation column 11, the separation column 11 sequentially comprises a separation elastic rib 111, two separation elastic ribs 112 and three separation elastic ribs 113 … … along the length direction, then a single composite filament 3 with the leading-in direction opposite to the original column 9 is taken, the composite filament 3 penetrates from the outer side of a vertical top 911 of the first vertical elastic rib 91, penetrates from the inner side of the first vertical top 911 after crossing the first vertical top 911, penetrates from the outer side of a second separation bottom 114 of the second separation elastic rib 112, penetrates from the inner side of the second separation bottom 114, penetrates from the outer side of the fifth vertical top 951, penetrates from the fifth vertical top 951, and penetrates from the inner side of the fifth vertical top 951 after crossing the first vertical top 911, and then penetrates from the inner side of the fifth vertical top 951 to 35 and all the original column 9 sequentially.
The two ends of the elastic rib 2 are respectively connected with an elastic ring 21, and when the composite filament 3 penetrates into or out of the two ends of the elastic rib 2, the composite filament 3 is wound around the elastic ring 21 at least once and then subjected to the next penetrating or out operation.
During stitch-bonding of the composite filaments 3, the spring rib 2 is in a pulled-up state.
On the back surface of the fiber net 1, a plurality of additional elastic yarns 12 are arranged in parallel at equal intervals along the length or width direction of the fiber net 1, the additional elastic yarns 12 are elastic yarns or elastic yarns, the additional elastic yarns 12 are clung to the back surface of the fiber net 1 and are perpendicular to the direction of the elastic ribs 2, when the composite filaments 3 repeatedly penetrate into and out of the fiber net 1 to fix two ends of each elastic rib 2 on the back surface of the fiber net 1, the composite filaments 3 repeatedly penetrate into and out of the fiber net 1 to fix each additional elastic yarn 12 on the back surface of the fiber net 1, each composite filament 3 and the corresponding additional elastic yarn 12 need to be connected for a plurality of times, each connecting point is called an additional connecting point 13, and a plurality of mutually independent and spaced additional connecting points 13 are arranged on each additional elastic yarn 12 along the trend.
The heat treatment of the fixed net body in a thermal environment means that: and (3) putting the solidified net body into hot steam or hot water for heat treatment, wherein the temperature is 90-160 ℃ and the time is 15-30 min.
The manufacturing material of the fiber web 1 is natural fiber or chemical short fiber or a mixture of natural fiber and chemical short fiber, and a layer of spunbonded nonwoven fabric, melt-blown nonwoven fabric, dry nonwoven fabric, wet nonwoven fabric, elastic nonwoven fabric or breathable film is compounded on the surface of the fiber web 1.
The composite filament 3 is a PET and PTT double-component parallel composite filament.
An elastic nonwoven fabric, which is prepared according to the preparation method of the elastic nonwoven fabric.
The principle of the invention is explained as follows:
the web refers to a web of a net structure made from fibers, and the composite filaments, whether they are threaded or threaded, must be threaded through the web during the step of threading or threading during stitch bonding. After the stitch-bonding of the composite filaments is completed, the bonded web body must be subjected to a heat treatment to shrink and deform the composite filaments, and after the heat treatment, the shrunk and deformed composite filaments are in a crimped state, and the crimped composite filaments drive the web and the elastic ribs and the additional elastic filaments thereon to shrink together to form a web with wrinkles, and when the web is subjected to an external force, the wrinkles are stretched, and when the external force is removed, the wrinkles are recovered. According to the requirements of the product, the heat treatment can be followed by antibacterial finishing, flame-retardant finishing, antifouling finishing or compression molding treatment to prepare more kinds of elastic non-woven fabrics.
And (3) heat treatment: the temperature is 90 ℃ to 160 ℃ and the time is 15min to 30min, the specific values of the temperature and the time are adjusted according to the material quality of the treatment material, and when the temperature is 125 ℃ and the time is 23min, the effect is better.
When stitch-bonding, if the elastic rib is in a pulled-up state, before heat treatment after stitch-bonding, the elastic rib rebounds to drive the composite filament and the fiber web to be primarily curled, at the moment, after heat treatment, the elastic rib is further curled, so that the wrinkle amplitude of the final product is larger, and the elastic effect is stronger.
Example 1:
referring to fig. 1-9, a method for preparing an elastic nonwoven fabric includes the following steps:
the web stitch bonding process: firstly, arranging a plurality of elastic tendons 2 in parallel at equal intervals on the back surface of a fiber web 1, wherein the arranging directions of the elastic tendons 2 are consistent, namely, the arranging directions are along the length direction or the width direction of the fiber web 1, then, a plurality of composite filaments 3 are led in parallel on the front surface of the fiber web 1, the leading-in direction of the composite filaments 3 is along the length direction of the fiber web 1, and the stitch-bonding mode after the composite filaments 3 are led in and out of the fiber web 1 repeatedly so as to fix the two ends of each elastic tendon 2 on the back surface of the fiber web 1, so as to obtain a fixed web body; the joint of the elastic ribs 2 and the composite filaments 3 is a consolidation point 31, and two ends of each elastic rib 2 are provided with a consolidation point 31; each composite filament 3 advances in a reciprocating swinging manner along the length direction of the fiber web 1 in the integral process of penetrating and penetrating the fiber web 1, the swinging direction is the width direction of the fiber web 1, and the stitch-bonding modes of adjacent composite filaments 3 are the same;
The crease heat treatment process comprises the following steps: the above-mentioned solid net body is placed into a thermal environment to make heat treatment (preferably placed into hot steam or hot water to make heat treatment, its temperature is 90 deg.C-160 deg.C and time is 15 min-30 min), the composite filament 3 is heated, contracted and deformed so as to form the filament with curled structure, and the curled filament can drive web 1 and elastic rib 2 to shrink so as to form the web with wrinkles, so that the invented elastic non-woven fabric can be obtained.
An elastic nonwoven fabric, which is prepared according to the preparation method of the elastic nonwoven fabric.
Example 2:
the basic content is the same as in example 1, except that:
referring to fig. 8, a plurality of additional elastic filaments 12 are arranged on the opposite side of the web 1 at equal intervals in parallel along the length or width direction of the web 1, the additional elastic filaments 12 are elastic filaments or elastic yarns, the additional elastic filaments 12 are clung to the opposite side of the web 1 and are perpendicular to the direction of the elastic tendons 2, when the composite filaments 3 repeatedly penetrate into and out of the web 1 to fasten both ends of each elastic tendon 2 on the opposite side of the web 1, the composite filaments 3 repeatedly penetrate into and out of the web 1 to fasten each additional elastic filament 12 on the opposite side of the web 1, each intersection point of each composite filament 3 and the corresponding additional elastic filament 12 is called an additional contact point 13, and a plurality of mutually independent and spaced additional contact points 13 exist on each additional elastic filament 12 along the trend.
Example 3:
the basic content is the same as in example 1, except that:
the two ends of the elastic rib 2 are respectively connected with an elastic ring 21, and when the composite filament 3 penetrates into or out of the two ends of the elastic rib 2, the composite filament 3 is wound around the elastic ring 21 at least once and then subjected to the next penetrating or out operation.
Example 4:
the basic content is the same as in example 1, except that:
the surface of the web 1 is composited with a layer of spunbonded nonwoven fabric, melt blown nonwoven fabric, dry nonwoven fabric, wet nonwoven fabric, elastic nonwoven fabric or breathable film. The composite filament 3 is a PET and PTT double-component parallel composite filament.
Example 5:
the basic content is the same as in example 1, except that:
when the arranging direction of the elastic ribs 2 is along the length direction of the fiber net 1, the elastic ribs 2 are in a plurality of elastic rib transverse rows 4 parallel to the length direction of the fiber net 1 on the back surface of the fiber net 1, a plurality of elastic ribs 2 which are parallel and level along the length direction are arranged in each elastic rib transverse row 4, and the two ends of each elastic rib 2 are respectively a head end and a tail end.
Referring to fig. 2, the single composite filament 3 is stitch-bonded in a manner of one: the first elastic rib row 4 is defined as an original elastic rib row 5, the original elastic rib row 5 sequentially comprises an original first elastic rib 51 and an original second elastic rib 52 … … along the length direction, then a single composite filament 3 which is opposite to the original elastic rib row 5 in the guiding direction is taken, the composite filament 3 firstly passes out of the original first head end 511 of the original first elastic rib 51, passes through the original first head end 511, passes through the inner side of the original first head end 511, passes out of the outer side of the original first tail end 512, passes through the inner side of the original first tail end 512, passes through the outer side of the original second head end 521 of the original second elastic rib 52, passes through the inner side of the original second head end 521, passes through the outer side of the original second tail end 522, passes through the inner side of the original second tail end 522, passes through … …, and sequentially goes on until all the elastic ribs 2 in the original elastic rib row 5 are experienced.
Referring to fig. 3, the single composite filament 3 is stitch-bonded in a second manner: any elastic rib row 4 is defined as an original elastic rib row 5, the original elastic rib row 5 sequentially comprises an original first elastic rib 51, an original second elastic rib 52 and an original third elastic rib 53 … … along the length direction, any elastic rib row 4 adjacent to the original elastic rib row 5 is defined as an adjacent elastic rib row 6, the adjacent elastic rib row 6 sequentially comprises an adjacent first elastic rib 61, an adjacent second elastic rib 62 and an adjacent third elastic rib 63 … … along the length direction, then a single composite filament 3 with the leading-in direction opposite to the original elastic rib row 5 is taken, the composite filament 3 sequentially penetrates from the outer side of the original first end 511 of the original first elastic rib 51, sequentially spans the original first end 511 and the adjacent second end 612, penetrates from the inner side of the adjacent first end 612, then penetrates from the outer side of the original second end 521, sequentially spans the original second end 521 and the adjacent second end 622, and sequentially penetrates from the outer side of the original third end 531, and then penetrates … …, and sequentially goes on until all elastic ribs 2 in the original elastic rib row 5 are experienced.
Referring to fig. 4, the stitch-bonding manner of the single composite filament 3 is as follows: any elastic rib row 4 is an original elastic rib row 5, the original elastic rib row 5 sequentially comprises an original first elastic rib 51, an original second elastic rib 52, an original third elastic rib 53, an original fourth elastic rib 54 and an original fifth elastic rib 55 … … along the length direction, any elastic rib row 4 which is not adjacent to the original elastic rib row 5 is an elastic rib row 7, the elastic rib row 7 sequentially comprises a first elastic rib 71, a second elastic rib 72, a third elastic rib 73, a fourth elastic rib 74 and a fifth elastic rib 75 … … along the length direction, then a single composite filament 3 which is opposite to the original elastic rib row 5 in the guiding direction is taken, the composite filament 3 sequentially penetrates from the outer side of the original first elastic rib 511, sequentially spans the original first end 511, the second elastic rib 721, the inner side of the second elastic rib 721, the third elastic rib 531, sequentially penetrates from the outer side of the original third elastic rib row 531, sequentially spans the first three elastic rib 531, the fourth elastic rib 74 and the fifth elastic rib 75, sequentially penetrates from the first elastic rib row 741 to the outer side of the original elastic rib row 35, and sequentially stretches from the first elastic rib row 35 to the second elastic rib row 5.
Example 6:
the basic content is the same as in example 1, except that:
when the arranging direction of the elastic ribs 2 is along the width direction of the fiber net 1, the elastic ribs 2 are in a plurality of elastic rib vertical columns 8 parallel to the length direction of the fiber net 1 on the back surface of the fiber net 1, a plurality of elastic ribs 2 perpendicular to the length direction are arranged in each elastic rib vertical column 8, and the two ends of each elastic rib 2 are respectively a top end and a bottom end.
Referring to fig. 5, the single composite filament 3 is stitch-bonded in a manner of one: firstly, any elastic rib vertical column 8 is an original vertical column 9, the original vertical column 9 sequentially comprises a vertical elastic rib 91 and two vertical elastic ribs 92 and … … along the length direction, then a single composite filament 3 with the leading-in direction opposite to the bottom end of the elastic rib 2 in the original vertical column 9 is taken, the composite filament 3 firstly penetrates out from the outer side of a vertical bottom end 912 of the vertical elastic rib 91, passes through the vertical bottom end 912, penetrates into the inner side of the vertical bottom end 912, then penetrates out from the outer side of the two vertical bottom ends 922, passes through the two vertical bottom ends 922, penetrates into … … from the inner side of the two vertical bottom ends 922, and sequentially goes on until the bottom ends of all the elastic ribs 2 in the original vertical column 9 are experienced, and the stitch-bonding mode of the top ends of the elastic ribs 2 is consistent with the bottom ends;
Referring to fig. 6, the single composite filament 3 is stitch-bonded in a second manner: firstly, any elastic rib vertical column 8 is defined as an original vertical column 9, the original vertical column 9 sequentially comprises a vertical elastic rib 91, two vertical elastic ribs 92 and three vertical elastic ribs 93 and … … along the length direction, then any elastic rib vertical column 8 adjacent to the original vertical column 9 is defined as an adjacent vertical column 10, the adjacent vertical column 10 sequentially comprises an adjacent elastic rib 101, two adjacent elastic ribs 102 and three adjacent elastic ribs 103 and … … along the length direction, then a single composite filament 3 with the leading-in direction opposite to the original vertical column 9 is taken, the composite filament 3 passes through the outer side of a vertical top end 911 of the first vertical elastic rib 91, passes through the inner side of the vertical top end 911, passes through the outer side of two adjacent bottom ends 104 of the second adjacent elastic rib 102, passes through the inner side of the two adjacent bottom ends 104, passes through the outer side of the three vertical top ends 931, and … … sequentially goes through all elastic ribs 2 in the original vertical column 9;
referring to fig. 7, the stitch-bonding manner of the single composite filament 3 is as follows: any elastic rib column 8 is an original column 9, the original column 9 sequentially comprises a vertical elastic rib 91, two vertical elastic ribs 92, three vertical elastic ribs 93, four vertical elastic ribs 94 and five vertical elastic ribs 95 … … along the length direction, any elastic rib column 8 which is not adjacent to the original column 9 is a separation column 11, the separation column 11 sequentially comprises a separation elastic rib 111, two separation elastic ribs 112 and three separation elastic ribs 113 … … along the length direction, then a single composite filament 3 with the leading-in direction opposite to the original column 9 is taken, the composite filament 3 penetrates from the outer side of a vertical top 911 of the first vertical elastic rib 91, penetrates from the inner side of the first vertical top 911 after crossing the first vertical top 911, penetrates from the outer side of a second separation bottom 114 of the second separation elastic rib 112, penetrates from the inner side of the second separation bottom 114, penetrates from the outer side of the fifth vertical top 951, penetrates from the fifth vertical top 951, and penetrates from the inner side of the fifth vertical top 951 after crossing the first vertical top 911, and then penetrates from the inner side of the fifth vertical top 951 to 35 and all the original column 9 sequentially.
Claims (8)
1. A method for preparing elastic non-woven fabric, which is characterized by comprising the following processes:
the web stitch bonding process: firstly, arranging a plurality of elastic tendons (2) on the back surface of a fiber web (1) at equal intervals in parallel, arranging the elastic tendons (2) in the same direction along the length direction or the width direction of the fiber web (1), then, introducing a plurality of composite filaments (3) on the front surface of the fiber web (1) in parallel, wherein the introducing direction of the composite filaments (3) is along the length direction of the fiber web (1), and the stitch-bonding mode after introducing the composite filaments (3) is that the composite filaments repeatedly penetrate into and penetrate out of the fiber web (1) so as to fix the two ends of each elastic tendon (2) on the back surface of the fiber web (1) to obtain a fixed web body; the joint of the elastic ribs (2) and the composite filaments (3) is a consolidation point (31), and two ends of each elastic rib (2) are provided with a consolidation point (31); in the integral process that each composite filament (3) penetrates into and out of the fiber web (1), the composite filaments (3) advance in a reciprocating swing mode along the length direction of the fiber web (1), the swing direction is the width direction of the fiber web (1), and the stitch-bonding modes of the adjacent composite filaments (3) are the same;
The crease heat treatment process comprises the following steps: placing the fixed net body into a thermal environment for heat treatment, and heating and shrinking the composite filaments (3) to form filaments with curled structures, wherein the curled filaments drive the fiber net (1) and the elastic rib (2) to shrink so as to form a fiber net with wrinkles, namely the elastic non-woven fabric;
the arranging directions of the elastic rib (2) comprise two directions along the length direction or the width direction of the fiber web (1), and the arranging directions are as follows:
when the furnishing direction of the elastic rib (2) is along the length direction of the fiber net (1), the elastic rib (2) presents a plurality of elastic rib courses (4) parallel to the length direction of the fiber net (1) on the back surface of the fiber net (1), a plurality of elastic ribs (2) flush with each other along the length direction are arranged in each elastic rib course (4), the two ends of each elastic rib (2) are respectively the head end and the tail end, and at the moment, the stitch knitting mode of the single composite filament (3) is any one of the following modes:
mode one: the method comprises the steps that firstly, any elastic rib row (4) is an original elastic rib row (5), the original elastic rib row (5) sequentially comprises an original elastic rib (51) and an original two elastic ribs (52) … … along the length direction, then a single composite filament (3) with the leading-in direction opposite to the original elastic rib row (5) is taken, the composite filament (3) firstly penetrates out of the original first end (511) of the original elastic rib (51), penetrates from the inner side of the original first end (511) after crossing the original first end (511), penetrates from the outer side of the original first end (512), penetrates from the inner side of the original first end (512) after crossing the original second end (512), penetrates from the outer side of the original two ends (521), penetrates from the inner side of the original two ends (521) after crossing the original two ends (521), penetrates from the outer side of the original two ends (522), penetrates from the inner side of the original two ends (522), penetrates from the original two ends (512) to the original elastic rib (… …) in sequence;
Mode two: firstly, any elastic rib row (4) is defined as an original elastic rib row (5), the original elastic rib row (5) sequentially comprises an original first elastic rib (51), an original second elastic rib (52) and an original third elastic rib (53) … … along the length direction, then any elastic rib row (4) adjacent to the original elastic rib row (5) is defined as an adjacent elastic rib row (6), the adjacent elastic rib row (6) sequentially comprises an adjacent elastic rib (61), an adjacent second elastic rib (62) and an adjacent third elastic rib (63) … … along the length direction, then a single composite filament (3) with an introduction direction opposite to the original elastic rib row (5) is taken, the composite filament (3) sequentially passes through the outer side of an original first end (511) of the original first elastic rib (51), passes through the inner side of the adjacent second end (612) after sequentially crossing the original first end (511) and the adjacent second end (612), passes through the outer side of the original first end (521), passes through the adjacent second end (622), passes through the adjacent second end (521) and then passes through the outer side (531) of the original elastic rib row (2) sequentially;
mode three: firstly, any elastic rib row (4) is defined as an original elastic rib row (5), the original elastic rib row (5) sequentially comprises an original first elastic rib (51), an original second elastic rib (52), an original third elastic rib (53), an original fourth elastic rib (54) and an original fifth elastic rib (55) … … along the length direction, then any elastic rib row (4) which is not adjacent to the original elastic rib row (5) is defined as an isolation elastic rib row (7), the isolation elastic rib row (7) sequentially comprises an isolation elastic rib (71), an isolation second elastic rib (72), an isolation third elastic rib (73), an isolation fourth elastic rib (74) and an isolation fifth elastic rib (75) … … along the length direction, then a composite filament (3) which is opposite to the original elastic rib row (5) in the leading direction is taken out, sequentially spans the original first elastic rib (511), the isolation second elastic rib row (721) and the isolation third elastic rib row (721) from the original first elastic rib row (511) to the first elastic rib row (531), and sequentially spans the first elastic rib row (721) from the first elastic rib row (721) to the second elastic rib row (531) from the first elastic rib row (721) from the first elastic rib row (back to the second elastic rib row (531);
When the furnishing direction of the elastic rib (2) is along the width direction of the fiber net (1), the elastic rib (2) is in a plurality of elastic rib vertical columns (8) parallel to the length direction of the fiber net (1) on the back surface of the fiber net (1), a plurality of elastic ribs (2) perpendicular to the length direction are arranged in each elastic rib vertical column (8), the two ends of each elastic rib (2) are respectively the top end and the bottom end, and at the moment, the stitch knitting mode of the single composite filament (3) is any one of the following modes:
mode one: firstly, any elastic rib vertical column (8) is an original vertical column (9), the original vertical column (9) sequentially comprises a vertical elastic rib (91), two vertical elastic ribs (92) and … …) along the length direction, then a single composite filament (3) with the leading-in direction opposite to the bottom end of the elastic rib (2) in the original vertical column (9) is taken, the composite filament (3) firstly penetrates out from the outer side of a vertical bottom end (912) of the vertical elastic rib (91), penetrates from the inner side of the vertical bottom end (912) after crossing the vertical bottom end (912), penetrates from the outer side of the two vertical bottom ends (922) after crossing the two vertical bottom ends (922), penetrates from the inner side of the two vertical bottom ends (922), … … is sequentially carried out until the bottom ends of all the elastic ribs (2) in the original vertical column (9) are experienced, and the stitching mode of the top ends of the elastic ribs (2) is consistent with the bottom ends;
Mode two: firstly, any elastic rib vertical column (8) is defined as an original vertical column (9), a vertical elastic rib (91), two vertical elastic ribs (92) and three vertical elastic ribs (93) … … are sequentially included in the original vertical column (9) along the length direction, then any elastic rib vertical column (8) adjacent to the original vertical column (9) is defined as an adjacent vertical column (10), the adjacent vertical column (10) sequentially includes an adjacent elastic rib (101), two adjacent elastic ribs (102) and three adjacent elastic ribs (103) … … along the length direction, then a single composite filament (3) with an introduction direction opposite to the original vertical column (9) is taken, the composite filament (3) penetrates out from the outer side of a vertical top end (911) of the first vertical elastic rib (91), penetrates out from the inner side of the vertical top end (911) again, penetrates out from the outer side of a two adjacent bottom ends (104) of the second adjacent bottom ends (104), penetrates out from the inner side of the second adjacent bottom ends (104) again, and then penetrates out from the outer side of the third vertical top end (84) of the original vertical column (931) in sequence, and all the composite filament (3) penetrates from the outer side of the first vertical column (911);
mode three: any elastic rib vertical column (8) is an original vertical column (9), the original vertical column (9) sequentially comprises a vertical elastic rib (91), two vertical elastic ribs (92), three vertical elastic ribs (93), four vertical elastic ribs (94) and five vertical elastic ribs (95) … … along the length direction, any elastic rib vertical column (8) which is not adjacent to the original vertical column (9) is a separation vertical column (11), the separation vertical column (11) sequentially comprises a separation elastic rib (111), two separation elastic ribs (112) and three separation elastic ribs (113) … … along the length direction, then a single composite filament (3) which is opposite to the original vertical column (9) in the guiding direction is taken, the composite filament (3) penetrates out from the outer side of a vertical top end (911) of the first vertical elastic rib (91), penetrates into the inner side of the first vertical top end (911), then penetrates out from the outer side of a separation bottom (114) of the second separation elastic rib (112), penetrates into the outer side of the first vertical top end (911) and then penetrates into the inner side of the first vertical top (951), and then penetrates into the top (951) from the outer side of the first vertical bottom (951) to the outer side of the second separation elastic rib (114), and then penetrates into the first vertical column (951) from the inner side (951) to the outer side of the first vertical top (951) and five top (951) after crossing the top (114) and five separation elastic ribs are sequentially arranged.
2. The method of making an elastic nonwoven according to claim 1, wherein: the two ends of the elastic rib (2) are respectively connected with an elastic ring (21), and when the composite filament (3) penetrates into or out of the two ends of the elastic rib (2), the composite filament (3) is wound around the elastic rings (21) at least once and then subjected to the next penetrating or out operation.
3. The method of making an elastic nonwoven according to claim 1, wherein: when the composite filament (3) is stitch-bonded, the elastic rib (2) is in a pulled-up state.
4. The method of making an elastic nonwoven according to claim 1, wherein: on the back surface of the fiber net (1), a plurality of additional elastic yarns (12) are arranged in parallel at equal intervals along the length or width direction of the fiber net (1), the additional elastic yarns (12) are elastic yarns or elastic yarns, the additional elastic yarns (12) are clung to the back surface of the fiber net (1) and are perpendicular to the direction of the elastic rib (2), when the composite filaments (3) repeatedly penetrate into and out of the fiber net (1) so as to fixedly bond two ends of each elastic rib (2) on the back surface of the fiber net (1), the composite filaments (3) repeatedly penetrate into and out of the fiber net (1) so as to fixedly bond each additional elastic yarn (12) on the back surface of the fiber net (1), each composite filament (3) and the corresponding additional elastic yarn (12) are required to be connected for a plurality of times, each connecting point is called an additional connecting point (13), and a plurality of mutually independent and alternately arranged additional connecting points (13) exist on each additional elastic yarn (12) along the trend of the additional elastic yarn.
5. The method of making an elastic nonwoven according to claim 1, wherein: the heat treatment of the fixed net body in a thermal environment means that: and (3) putting the solidified net body into hot steam or hot water for heat treatment, wherein the temperature is 90-160 ℃ and the time is 15-30 min.
6. The method of making an elastic nonwoven according to claim 1, wherein: the manufacturing material of the fiber net (1) is natural fiber or chemical short fiber or mixture of natural fiber and chemical short fiber, and a layer of spunbonded nonwoven fabric, melt-blown nonwoven fabric, dry nonwoven fabric, wet nonwoven fabric, elastic nonwoven fabric or breathable film is compounded on the surface of the fiber net (1).
7. The method of making an elastic nonwoven according to claim 1, wherein: the composite filament (3) is a PET and PTT double-component parallel composite filament.
8. An elastic nonwoven fabric characterized by: the elastic nonwoven is produced according to the method of producing an elastic nonwoven of claim 1.
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| JPH10183455A (en) * | 1996-12-19 | 1998-07-14 | Unitika Ltd | Production of nonwoven web comprising continuous filaments |
| JP2000060900A (en) * | 1998-06-09 | 2000-02-29 | Du Pont Toray Co Ltd | Sanitary shorts |
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| CN1961108A (en) * | 2003-12-05 | 2007-05-09 | 纳幕尔杜邦公司 | Process for preparing an elastic nonwoven web |
| CN108468150A (en) * | 2018-04-03 | 2018-08-31 | 海宁纺织综合企业有限公司 | A kind of manufacturing method of elastic non-woven, elastic non-woven and elastic article |
| CN208266390U (en) * | 2018-04-03 | 2018-12-21 | 海宁纺织综合企业有限公司 | A kind of elastic non-woven |
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2018
- 2018-04-03 CN CN201810291620.3A patent/CN108754866B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1046004A (en) * | 1989-03-31 | 1990-10-10 | 纳幕尔杜邦公司 | Stitchbonded nonmoven fabric |
| JPH10183455A (en) * | 1996-12-19 | 1998-07-14 | Unitika Ltd | Production of nonwoven web comprising continuous filaments |
| JP2000060900A (en) * | 1998-06-09 | 2000-02-29 | Du Pont Toray Co Ltd | Sanitary shorts |
| CN1714187A (en) * | 2002-11-19 | 2005-12-28 | 纳幕尔杜邦公司 | Vertically stacked carded aramid web useful in fire fighting clothing |
| CN1961108A (en) * | 2003-12-05 | 2007-05-09 | 纳幕尔杜邦公司 | Process for preparing an elastic nonwoven web |
| CN108468150A (en) * | 2018-04-03 | 2018-08-31 | 海宁纺织综合企业有限公司 | A kind of manufacturing method of elastic non-woven, elastic non-woven and elastic article |
| CN208266390U (en) * | 2018-04-03 | 2018-12-21 | 海宁纺织综合企业有限公司 | A kind of elastic non-woven |
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| CN108754866A (en) | 2018-11-06 |
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