CN104818584A - High-elastic anti-flaming non-woven fabric with filament adhesion type honeycomb structure and preparation method thereof - Google Patents
High-elastic anti-flaming non-woven fabric with filament adhesion type honeycomb structure and preparation method thereof Download PDFInfo
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- CN104818584A CN104818584A CN201510247669.5A CN201510247669A CN104818584A CN 104818584 A CN104818584 A CN 104818584A CN 201510247669 A CN201510247669 A CN 201510247669A CN 104818584 A CN104818584 A CN 104818584A
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- 238000002844 melting Methods 0.000 claims abstract description 54
- 239000000843 powder Substances 0.000 claims abstract description 41
- 239000011812 mixed powder Substances 0.000 claims abstract description 20
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- 238000001035 drying Methods 0.000 claims abstract description 14
- 238000009966 trimming Methods 0.000 claims abstract description 13
- 238000004804 winding Methods 0.000 claims abstract description 7
- 230000001154 acute effect Effects 0.000 claims abstract description 4
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- 239000012943 hotmelt Substances 0.000 claims description 57
- 239000004744 fabric Substances 0.000 claims description 48
- 229920000742 Cotton Polymers 0.000 claims description 33
- 238000000034 method Methods 0.000 claims description 28
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Abstract
A high-elastic anti-flaming non-woven fabric with a filament adhesion type honeycomb structure comprises a plurality of compound fiber meshes sequentially stacked in a back-and-forth Z shape. Mixed powder of hot melting powder and anti-flaming powder is scattered in the compound fiber meshes, the compound fiber meshes are sequentially in end-to-end connection, the included angles of fiber mesh layers between the adjacent compound fiber meshes are acute angles smaller than 2 degrees, and equidistant and side-by-side hot melting filaments are arranged on the front surfaces and the rear surfaces of the fiber meshes in the width direction of the compound fiber meshes and are folded in the back-and-forth Z shape along with the compound fiber meshes. The compound fiber meshes are fiber meshes which are of a laminated structure; and each compound fiber mesh is formed by overlaying an upper layer fiber mesh, an elastic fiber mesh and a lower layer fiber mesh. A preparation method for preparing the high-elastic anti-flaming non-woven fabric comprises the first step of preparation prior to mesh formation, the second step of mechanical combing to form the meshes, the third step of powder scattering, the fourth step of fiber mesh compounding, the fifth step of vertical mesh laying, the sixth step of drying, the seventh step of trimming and the eighth step of winding. The high-elastic anti-flaming non-woven fabric not only is high in elasticity, prevents flaming and is simple in structure, but also is low in cost and environmentally friendly.
Description
Technical field
The present invention relates to high-elastic fireblocking nonwoven cloth and the manufacture method thereof of the bonded honeycomb structure of a kind of long filament, belong to Nonwovens Field.
Background technology
Fluff material is the necessity of human society life, closely bound up with the life of people, as the fields such as acoustic material, sofa, mattress, executive chair, sports equipment, clothes all need to use fluff material.Usually sponge, warp-knitted spacer fabric, Three-dimensional Elastic Woven Fabric, the large class of non-weaving cloth four is had according to the preparation method of fluff material.Sponge is a kind of porous material, and the soft foam mainly in polyurethane foamed material is prepared from, because sponge is cheap, lightweight, soft plentiful and resilience good, at market dominate.But sponge produces pollution, the discarded object not mortality shortcoming such as reusable edible, and easily turns to be yellow, and gas permeability, comfortableness are poor.Current Australia and some countries in Europes, because of the environmental pollution of sponge and serious waste of resources, have taked corresponding measure to contain sponge application.Three-dimensional warp knitting space fabric refers to by two fabric faces, the La Sheer utilizing interval yarn to link together through compiling three dimensional needle fabric, such as, with the mattress that space fabric is made, the sense of aching that can prevent patient from producing because of long-term bed.Its remarkable advantage is: production process is environment friendly and pollution-free, recyclable, fastness is good, hot wet migration, warmth retention property and gas permeability are better, soft flexible, overcome the shortcoming of sponge, but due to its design feature, resistance to compression and resilience poor, current range of application is restricted, and particularly cannot meet the elasticity of compression and require higher product.Three-dimensional Elastic Woven Fabric is then a kind of novel fluffy material grown up on the basis of warp-knitted spacer fabric, and have good resilience in a thickness direction, Stability Analysis of Structures, shape is changeable, good integrity, and has the performances such as good poisture-penetrability, gas permeability.But its weaving structure is complicated, and manufacturing cost is higher, is difficult to popularization and application.Along with the development of Nonwovens In Technology, change the orientation of fiber, by non-weaving cloth transversely arranged for common fiber, change into arranged vertically, obtain the non-weaving cloth with honeycomb structure, owing to having unique fibre web rising structure, product elasticity is very good.Compared with sponge, there is the features such as non yellowing, good permeability, dimensionally stable, its discarded object recoverable, adapt to the consumption concept of environmental protection low-carbon (LC) society.Compared with Three-dimensional Elastic Woven Fabric, warp-knitted spacer fabric, technique is simple, and to the strong adaptability of raw material, raw material sources are extensive, and production cost is lower, and product applications is more wide.But easily produce lamination between the fibre web of existing high-elastic non-weaving cloth and fibre web, affect the elasticity of product; Lack existing high elasticity simultaneously, have again the product of flame retardant effect, the range of application that have impact on high-elastic non-weaving cloth expands.
Summary of the invention
The object of the invention is to overcome in prior art, existence can not meet that high elasticity, low cost, structure are simple, the technical problem of environmental protection simultaneously, provides a kind of and can meet that high elasticity, low cost, structure are simple simultaneously, environmental protection and have non-weaving cloth and the manufacture method thereof of flame retardant effect.
To achieve these goals, technical scheme of the present invention is: the high-elastic fireblocking nonwoven cloth of the bonded honeycomb structure of a kind of long filament, comprise the multiple composite webs stacked gradually, it is characterized in that: the inside of described composite web is sprinkled with the mixed powder of thermal fusing powder and fireproof powder, composite web joins end to end successively, arrangement mode is in the Z-shaped come and gone, fibrage angle is had between adjacent composite web, this web layer angle is be less than the acute angle of 2 degree, the positive and negative surface of composite web is provided with equidistantly along its width, hot melt long filament side by side, with composite web folding in the Z-shaped come and gone.
The thickness of described hot melt long filament is 20 D – 300 D, and fusing point is less than or equal to 110 °, and the spacing distance of adjacent hot melt long filament is 5 mm – 300 mm; Described hot melt long filament is a monofilament or a multifilament, and this multifilament is made up of the monofilament of more than two or two; The manufactured materials of described hot melt long filament is nylon or terylene.
Described composite web is a kind of fibre web of layer structure, and this fibre web comprises the upper strata fibre web, elastic web, the lower floor's fibre web that superpose successively from top to bottom.
A preparation method for the high-elastic fireblocking nonwoven cloth of the bonded honeycomb structure of above-mentioned long filament, is characterized in that: the method comprises the steps:
(1) prepare before becoming net: first the various fibrous raw materials needed for preparation upper strata fibre web, elastic web, lower floor's fibre web to be mixed respectively, shredding, and finish is added in the process of shredding, upper strata fibre web and lower floor's fibre web prepare the mixture that material is the hollow pet staple fiber of low-melting point polyester staple fiber and three-dimensional crimp, in upper strata fibre web and lower floor's fibre web, the percentage by weight of low-melting point polyester staple fiber is 15% ~ 30%, and the percentage by weight of the hollow pet staple fiber of three-dimensional crimp is 70% ~ 85%; Elastic web prepare the mixture that material is low-melting point polyester staple fiber and elastic polyester staple fibre, in elastic web, the percentage by weight of low-melting point polyester staple fiber is 10% ~ 25%, and the percentage by weight of elastic polyester staple fibre is 75% ~ 90%; Described low-melting point polyester staple fiber is the skin-core structure type polyester staple fiber that fusing point is less than or equal to 110 °; Described elastic polyester staple fibre is ptt fiber or elastic polyester ELK fiber;
(2) mechanical carding becomes net: the fiber after mixing, shredding, adopts mechanical carding to become net method to prepare upper strata fibre web, elastic web, lower floor's fibre web respectively;
(3) dusting: respectively on upper strata fibre web, elastic web, lower floor's fibre web, spread the mixed powder of thermal fusing powder and fireproof powder;
(4) fibre web compound: upper strata fibre web, elastic web, lower floor's fibre web three layers of fibre web are superimposed as composite web, and elastic web is clipped in the centre of upper strata fibre web and lower floor's fibre web;
(5) vertical lapping: the composite web after drying feeds vertical lapping machine, and hot melt long filament is set on the positive and negative surface of composite web, the set-up mode of this hot melt long filament be equidistant along the width of composite web, be arranged side by side, again the composite web arranging upper hot melt long filament is carried out vertical lapping, obtain lapping cotton, lapping width is 5mm – 200mm;
(6) drying: the lapping cotton after vertical lapping operation is heated successively, cooled;
(7) trimming: the irregular part in edge cutting the cotton both sides of lapping;
(8) reel: after trimming, winding, the high-elastic fireblocking nonwoven cloth of the obtained described bonded honeycomb structure of long filament.
Owing to adopting above technical scheme, the high-elastic fireblocking nonwoven cloth of the bonded honeycomb structure of long filament of the present invention, has following characteristics:
One, the present invention, joining end to end successively, on the positive and negative surface of the fibre web in Z-shaped reciprocating folding type, all be provided with equidistantly along its width, hot melt long filament side by side, and hot melt long filament is first set when manufacturing carries out vertical lapping again with in Z-shaped reciprocating folding type, this design can guarantee folding after fibre web positive and negative surface on be placed with enough hot melt long filaments, when hot melt long filament in drying technique through heating after melting, cementation can be played between adjacent fibre web, increase the cohesive force between web layer, avoid the dispersion between web layer, honeycomb structure is formed on the whole to make high-elastic fireblocking nonwoven cloth, when certain partial compression, pressure can be distributed to periphery, reply fast, elasticity is strong, compared with prior art, greatly can improve the elasticity of product, be suitable for articles for babies, cushion, bed industry articles for use, brassiere cup, automotive trim, the field that the aeroelastic requirements such as sport guard textiles are high.Therefore, elasticity of the present invention is very high.
Two, in the high-elastic fireblocking nonwoven cloth of the bonded honeycomb structure of a kind of long filament of the present invention and manufacture method thereof, composite web can be preferably a kind of fibre web of layer structure, this fibre web comprises the upper strata fibre web, elastic web, the lower floor's fibre web that superpose successively from top to bottom, the advantage of this design is as follows: first, and the elastic web of setting up can improve the elasticity of final products; Secondly, elastic web is clipped in the Position Design between upper strata fibre web and lower floor's fibre web, can guarantee being uniformly distributed in the product of the elastic web after vertical lapping, make the uniform elastic of the product prepared consistent, there will not be elastic difference; Again, the appearance of product is upper strata fibre web or lower floor's fibre web, and the feel of product determines primarily of the performance of upper strata fibre web or lower floor's fibre web, can realize meeting the feel elastomeric basis being improved product; 4th, the manufactured materials of upper strata fibre web, lower floor's fibre web, elastic web all comprises low-melting point polyester staple fiber, in the process of composite web, vertical lapping operation, low-melting point polyester staple fiber in upper strata fibre web, lower floor's fibre web, elastic web all can fibre web surface exposed go out, melted by heating in drying technique, thus the cohesive force between increase composite web, avoid layering, improve the elasticity of final products.Therefore, the present invention is high elasticity, even structure not only, and the performance of good hand touch, easily adjustment product.
Three, the present invention spreads the mixed powder of thermal fusing powder and fireproof powder, makes mixed powder be evenly distributed in the inside of composite web, thermal fusing powder melting, is cemented in by fireproof powder on the fiber in composite web, can realize non-weaving cloth and have fire-retardant object.
Four, in the high-elastic fireblocking nonwoven cloth of the bonded honeycomb structure of a kind of long filament of the present invention and manufacture method thereof, the cohesive force that the unique in vertical direction rising structure of final products is provided by low-melting point polyester staple fiber between composite web in addition, make fiber assembly possess great elasticity and compressive property, and can layering be avoided; Compared with sponge, this product non yellowing, good permeability, dimensionally stable, discarded object recoverable, adapt to the consumption concept of environmental protection low-carbon (LC) society, compared with Three-dimensional Elastic Woven Fabric, warp-knitted spacer fabric, technique is simple, to the strong adaptability of raw material, raw material sources are extensive, and production cost is lower, and product applications is more wide.Therefore, the present invention is high elasticity, low cost not only, and structure is simple, environmental protection.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structure for amplifying schematic diagram at A place in Fig. 1.
In figure: the mixed powder 7 of composite web 1, upper strata fibre web 4, elastic web 5, lower floor's fibre web 6, hot melt long filament 2, fibrage angle 3, thermal fusing powder and fireproof powder.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
See Fig. 1, Fig. 2, the high-elastic fireblocking nonwoven cloth of the bonded honeycomb structure of a kind of long filament, comprise the multiple composite webs 1 stacked gradually, it is characterized in that: the inside of described composite web 1 is sprinkled with the mixed powder 7 of thermal fusing powder and fireproof powder, composite web 1 joins end to end successively, arrangement mode is in the Z-shaped come and gone, fibrage angle 3 is had between adjacent composite web 1, the acute angle of this web layer angle 3 for being less than 2 degree, the positive and negative surface of composite web 1 is provided with equidistantly along its width, hot melt long filament 2 side by side, with composite web 1 folding in the Z-shaped come and gone.
The thickness of described hot melt long filament 2 is 20 D – 300 D, and fusing point is less than or equal to 110 °, and the spacing distance of adjacent hot melt long filament 2 is 5 mm – 300 mm; Described hot melt long filament 2 is a monofilament or a multifilament, and this multifilament is made up of the monofilament of more than two or two; The manufactured materials of described hot melt long filament 2 is nylon or terylene.
Described composite web 1 is a kind of fibre web of layer structure, and this fibre web comprises the upper strata fibre web 4, elastic web 5, the lower floor's fibre web 6 that superpose successively from top to bottom.
A preparation method for the high-elastic fireblocking nonwoven cloth of the bonded honeycomb structure of above-mentioned long filament, the method comprises the steps:
(1) prepare before becoming net: first the various fibrous raw materials needed for preparation upper strata fibre web 4, elastic web 5, lower floor's fibre web 6 to be mixed respectively, shredding.Non-woven mixing opening apparatus running speed is high, and because raw material all belongs to chemical fibre, hygroscopicity is poor compared with natural, easily produces electrostatic, in the process of shredding, adds finish, can prevent because electrostatic produces and affect product quality in mixing shredding.Upper strata fibre web 4 prepares with lower floor's fibre web 6 the mixture that material is the hollow pet staple fiber of low-melting point polyester staple fiber and three-dimensional crimp, in upper strata fibre web 4 with lower floor's fibre web 6, the percentage by weight of low-melting point polyester staple fiber is 15% ~ 30%, and the percentage by weight of the hollow pet staple fiber of three-dimensional crimp is 70% ~ 85%; Elastic web 5 prepare the mixture that material is low-melting point polyester staple fiber and elastic polyester staple fibre, in elastic web 5, the percentage by weight of low-melting point polyester staple fiber is 10% ~ 25%, and the percentage by weight of elastic polyester staple fibre is 75% ~ 90%; Described low-melting point polyester staple fiber is the skin-core structure type polyester staple fiber that fusing point is less than or equal to 110 °; Described elastic polyester staple fibre is ptt fiber or elastic polyester ELK fiber;
(2) mechanical carding becomes net: the fiber after mixing, shredding, adopts mechanical carding to become net method to prepare upper strata fibre web 4, elastic web 5, lower floor's fibre web 6 respectively;
(3) dusting: respectively on upper strata fibre web 4, elastic web 5, lower floor's fibre web 6, spreads the mixed powder 7 of thermal fusing powder and fireproof powder;
(4) fibre web compound: by upper strata fibre web 4, elastic web 5, lower floor's fibre web 6 three layers of fibre web are superimposed as composite web 1, elastic web 5 is clipped in the centre of upper strata fibre web 4 and lower floor's fibre web 6, be convenient to elastic web 5 be evenly distributed in the product, make product uniform elastic consistent, there will not be elastic difference, simultaneously, can ensure that the appearance of product is upper strata fibre web 4 or lower floor's fibre web 6, thus the feel of final products is primarily of upper strata fibre web 4, the performance of lower floor's fibre web 6 determines, be conducive to like this carrying out structural design to product, the performance of easy adjustment product, meet the various requirement of product, as being in the upper strata fibre web 4 of product appearance, the fineness of the doughnut of the three-dimensional crimp in lower floor's fibre web 6 can be selected thinner, the product obtained so both had high elasticity, the feel had again,
(5) vertical lapping: composite web 1 feeds vertical lapping machine, and hot melt long filament 2 is set on the positive and negative surface of composite web 1, the set-up mode of this hot melt long filament 2 is the widths along composite web 1, many hot melt long filaments 2 equidistant, side by side are set, again the composite web 1 arranging upper hot melt long filament 2 is carried out vertical lapping, obtain lapping cotton.Hot melt long filament 2 along with composite web 1 together in come and go Z-shaped fold.When the output speed of vertical lapping machine is certain, the speed of lapping is larger, i.e. on the length direction of product, the number of plies of lapping is more, fibrage angle between adjacent composite web 1 is less, more level off to 0 degree, composite web 1 is more in vertical, and the elasticity of product is better.By regulating the technological parameter of vertical lapping, making the fibrage angle 3 between adjacent composite web 1 control within the scope of 0-2 degree, ensureing the elastic performance of final products.Lapping width is 5mm ~ 200mm.Lapping width is wider, and the thickness of product is thicker, but when lapping width is excessive, the resistance to compression of product and compression resilience will receive impact, deleterious, control within 200mm;
(6) drying: the lapping cotton after vertical lapping operation is heated successively, cooled.Low-melting point polyester staple fiber melted by heating in lapping cotton, the polymer flow of melting also condenses upon in fiber intersection points, becomes have flexible non-weaving cloth when being reinforced after the cooling of lapping cotton.Hot melt long filament 2 melting simultaneously, gets up adjacent fibre web 1 bonding, makes the overall honeycomb structure of product formation, improves the elasticity of product.Thermal fusing powder melting in mixed powder 7, is cemented in fireproof powder on the fiber in composite web 1, makes product have flame retardant effect.Drying mode can adopt hot-air to penetrate the cotton mode of lapping, low-melting point polyester staple fiber and hot melt long filament 2 are heated, carry out heating rapidly and uniformly at the whole width of lapping cotton, in drying room, temperature accomplishes uniformity as far as possible everywhere, simultaneously the speed of hot blast and direction all can control, and hot blast does not destroy the structure of lapping cotton in process circulating;
(7) trimming: the irregular part in edge cutting the cotton both sides of lapping.After drying operation terminates, drying machine exports on the width of lapping cotton, arranges bead cutter respectively on the both sides of lapping cotton, and by irregular for the edge of lapping cotton cutaway, the lapping of making one fixed width is cotton;
(8) reel: after trimming, winding, the high-elastic fireblocking nonwoven cloth of the obtained described bonded honeycomb structure of long filament.
embodiment
1
Thickness is high-elastic fireblocking nonwoven cloth of the bonded honeycomb structure of long filament of 200mm and preparation method thereof.
See Fig. 1, Fig. 2, thickness is the high-elastic fireblocking nonwoven cloth of the bonded honeycomb structure of long filament of 200mm, comprise the multiple composite webs 1 stacked gradually, the inside of composite web 1 is sprinkled with the mixed powder 7 of thermal fusing powder and fireproof powder, composite web 1 joins end to end successively, arrangement mode is in the Z-shaped come and gone, fibrage angle 3 is had between adjacent composite web 1, this web layer angle 3 levels off to 0 degree, the positive and negative surface of composite web 1 is provided with hot melt long filament 2 equidistantly, side by side along its width, with folding in the Z-shaped come and gone of composite web 1.
The thickness of described hot melt long filament 2 is the monofilament of the nylon material of 20D, and fusing point equals 110 °, and the spacing distance of adjacent hot melt long filament 2 is 5mm.
Described composite web 1 is a kind of fibre web of layer structure, and this fibre web comprises the upper strata fibre web 4, elastic web 5, the lower floor's fibre web 6 that superpose successively from top to bottom.
The preparation method of the high-elastic fireblocking nonwoven cloth of the bonded honeycomb structure of above-mentioned long filament, the method comprises the steps:
(1) prepare before becoming net: first the various fibrous raw materials needed for preparation upper strata fibre web 4, elastic web 5, lower floor's fibre web 6 to be mixed respectively, shredding.Anlistatig finish is added in the process of shredding.Upper strata fibre web 4 prepares with lower floor's fibre web 6 the mixture that material is the hollow pet staple fiber of low-melting point polyester staple fiber and three-dimensional crimp, in upper strata fibre web 4 with lower floor's fibre web 6, the percentage by weight of low-melting point polyester staple fiber is 15% ~ 30%, the percentage by weight of the hollow pet staple fiber of three-dimensional crimp is 70% ~ 85%, the fineness of the hollow pet staple fiber of three-dimensional crimp is 3D, and length is 51mm; Elastic web 5 prepare the mixture that material is low-melting point polyester staple fiber and elastic polyester ELK fiber, in elastic web 5, the percentage by weight of low-melting point polyester staple fiber is 10% ~ 25%, the percentage by weight of elastic polyester ELK fiber is 75% ~ 90%, the fineness of elastic polyester ELK fiber is 6.6D, and length is 64mm; Described low-melting point polyester staple fiber is the skin-core structure type polyester staple fiber that fusing point equals 110 °;
(2) mechanical carding becomes net: the fiber after mixing, shredding, adopts mechanical carding to become net method to prepare upper strata fibre web 4, elastic web 5, lower floor's fibre web 6 respectively;
(3) dusting: respectively on upper strata fibre web 4, elastic web 5, lower floor's fibre web 6, spreads the mixed powder 7 of thermal fusing powder and fireproof powder;
(4) fibre web compound: upper strata fibre web 4, elastic web 5, lower floor's fibre web 6 three layers of fibre web are superimposed as composite web 1;
(5) vertical lapping: composite web 1 feeds vertical lapping machine, and hot melt long filament 2 is set on the positive and negative surface of composite web 1, the set-up mode of this hot melt long filament 2 is that the width of composite web 1 is provided with many hot melt long filaments 2 equidistant, side by side, spacing distance is 5 mm, again the composite web 1 arranging upper hot melt long filament 2 is carried out vertical lapping, obtain lapping cotton.Fibrage angle 3 between adjacent composite web 1 levels off to 0 degree, and composite web 1 is in vertical, and lapping width is 200mm;
(6) drying: the lapping cotton after vertical lapping operation is heated successively, cooled; Low-melting point polyester staple fiber melted by heating in lapping cotton, the polymer flow of melting also condenses upon in fiber intersection points, becomes have flexible non-weaving cloth when being reinforced after the cooling of lapping cotton.Hot melt long filament 2 melting simultaneously, gets up adjacent composite web 1 bonding, makes the overall honeycomb structure of product formation, improves the elasticity of product.Thermal fusing powder melting in mixed powder 7, is cemented in fireproof powder on the hollow pet staple fiber of the three-dimensional crimp in composite web 1, elastic polyester ELK fiber, makes product have flame retardant effect;
(7) trimming: the irregular part in edge cutting the cotton both sides of lapping;
(8) reel: after trimming, winding, obtained thickness is the high-elastic fireblocking nonwoven cloth of the bonded honeycomb structure of long filament of 200mm.
embodiment
2
Thickness is high-elastic fireblocking nonwoven cloth of the bonded honeycomb structure of long filament of 5mm and preparation method thereof.
See Fig. 1, Fig. 2, thickness is the high-elastic fireblocking nonwoven cloth of the bonded honeycomb structure of long filament of 5mm, comprise the multiple composite webs 1 stacked gradually, the inside of composite web 1 is sprinkled with the mixed powder 7 of thermal fusing powder and fireproof powder, composite web 1 joins end to end successively, arrangement mode is in the Z-shaped come and gone, fibrage angle 3 is had between adjacent composite web 1, this web layer angle 3 is less than 2 degree and levels off to 2 degree, the positive and negative surface of composite web 1 is provided with hot melt long filament 2 equidistantly, side by side along its width, with folding in the Z-shaped come and gone of composite web 1.
The thickness of described hot melt long filament 2 is the polyester material multifilament of 300D/40F, and fusing point equals 110 °, and the spacing distance of adjacent hot melt long filament 2 is 300mm.
Described composite web 1 is a kind of fibre web of layer structure, and this fibre web comprises the upper strata fibre web 4, elastic web 5, the lower floor's fibre web 6 that superpose successively from top to bottom.
The preparation method of the high-elastic fireblocking nonwoven cloth of the bonded honeycomb structure of above-mentioned long filament, the method comprises the steps:
(1) prepare before becoming net: first the various fibrous raw materials needed for preparation upper strata fibre web 4, elastic web 5, lower floor's fibre web 6 to be mixed respectively, shredding.Anlistatig finish is added in the process of shredding.Upper strata fibre web 4 prepares with lower floor's fibre web 6 the mixture that material is the hollow pet staple fiber of low-melting point polyester staple fiber and three-dimensional crimp, in upper strata fibre web 4 with lower floor's fibre web 6, the percentage by weight of low-melting point polyester staple fiber is 15% ~ 30%, the percentage by weight of the hollow pet staple fiber of three-dimensional crimp is 70% ~ 85%, the fineness of the hollow pet staple fiber of three-dimensional crimp is 3D, and length is 51mm; Elastic web 5 prepare the mixture that material is low-melting point polyester staple fiber and ptt fiber, in elastic web 5, the percentage by weight of low-melting point polyester staple fiber is 10% ~ 25%, and the percentage by weight of ptt fiber is 75% ~ 90%, the fineness of ptt fiber is 2.5D, and length is 51mm; Described low-melting point polyester staple fiber is the skin-core structure type polyester staple fiber that fusing point equals 110 °;
(2) mechanical carding becomes net: the fiber after mixing, shredding, adopts mechanical carding to become net method to prepare upper strata fibre web 4, elastic web 5, lower floor's fibre web 6 respectively;
(3) dusting: respectively on upper strata fibre web 4, elastic web 5, lower floor's fibre web 6, spreads the mixed powder 7 of thermal fusing powder and fireproof powder;
(4) fibre web compound: upper strata fibre web 4, elastic web 5, lower floor's fibre web 6 three layers of fibre web are superimposed as composite web 1;
(5) vertical lapping: composite web 1 feeds vertical lapping machine, and hot melt long filament 2 is set on the positive and negative surface of composite web 1, the set-up mode of this hot melt long filament 2 is that the width of composite web 1 is provided with many hot melt long filaments 2 equidistant, side by side, spacing distance is 300mm, again the composite web 1 arranging upper hot melt long filament 2 is carried out vertical lapping, obtain lapping cotton.Fibrage angle 3 between adjacent composite web 1 is less than 2 degree and levels off to 2 degree, and composite web 1 is in vertical, and lapping width is 5mm;
(6) drying: the lapping cotton after vertical lapping operation is heated successively, cooled; Low-melting point polyester staple fiber melted by heating in lapping cotton, the polymer flow of melting also condenses upon in fiber intersection points, becomes have flexible non-weaving cloth when being reinforced after the cooling of lapping cotton.Hot melt long filament 2 melting simultaneously, gets up adjacent composite web 1 bonding, makes the overall honeycomb structure of product formation, improves the elasticity of product.Thermal fusing powder melting in mixed powder 7, is cemented in fireproof powder on the hollow pet staple fiber of the three-dimensional crimp in composite web 1, ptt fiber, makes product have flame retardant effect;
(7) trimming: the irregular part in edge cutting the cotton both sides of lapping;
(8) reel: after trimming, winding, obtained thickness is the high-elastic fireblocking nonwoven cloth of the bonded honeycomb structure of long filament of 5mm.
embodiment
3
Thickness is high-elastic fireblocking nonwoven cloth of the bonded honeycomb structure of long filament of 105mm and preparation method thereof.
See Fig. 1, Fig. 2, thickness is the high-elastic fireblocking nonwoven cloth of the bonded honeycomb structure of long filament of 105mm, comprise the multiple composite webs 1 stacked gradually, the inside of composite web 1 is sprinkled with the mixed powder 7 of thermal fusing powder and fireproof powder, composite web 1 joins end to end successively, arrangement mode is in the Z-shaped come and gone, fibrage angle 3 is had between adjacent composite web 1, this web layer angle 3 is less than 1 degree and levels off to 1 degree, the positive and negative surface of composite web 1 is provided with hot melt long filament 2 equidistantly, side by side along its width, with folding in the Z-shaped come and gone of composite web 1.
The thickness of described hot melt long filament 2 is the polyester material multifilament of 150D/20F, and fusing point equals 110 °, and the spacing distance of adjacent hot melt long filament 2 is 150mm.
Described composite web 1 is a kind of fibre web of layer structure, and this fibre web comprises the upper strata fibre web 4, elastic web 5, the lower floor's fibre web 6 that superpose successively from top to bottom.
The preparation method of the high-elastic fireblocking nonwoven cloth of the bonded honeycomb structure of above-mentioned long filament, the method comprises the steps:
(1) prepare before becoming net: first the various fibrous raw materials needed for preparation upper strata fibre web 4, elastic web 5, lower floor's fibre web 6 to be mixed respectively, shredding.Anlistatig finish is added in the process of shredding.Upper strata fibre web 4 prepares with lower floor's fibre web 6 the mixture that material is the hollow pet staple fiber of low-melting point polyester staple fiber and three-dimensional crimp, in upper strata fibre web 4 with lower floor's fibre web 6, the percentage by weight of low-melting point polyester staple fiber is 15% ~ 30%, the percentage by weight of the hollow pet staple fiber of three-dimensional crimp is 70% ~ 85%, the fineness of the hollow pet staple fiber of three-dimensional crimp is 3D, and length is 51mm; Elastic web 5 prepare the mixture that material is low-melting point polyester staple fiber and ptt fiber, in elastic web 5, the percentage by weight of low-melting point polyester staple fiber is 10% ~ 25%, and the percentage by weight of ptt fiber is 75% ~ 90%, the fineness of ptt fiber is 2.5D, and length is 51mm; Described low-melting point polyester staple fiber is the skin-core structure type polyester staple fiber that fusing point equals 110 °;
(2) mechanical carding becomes net: the fiber after mixing, shredding, adopts mechanical carding to become net method to prepare upper strata fibre web 4, elastic web 5, lower floor's fibre web 6 respectively;
(3) dusting: respectively on upper strata fibre web 4, elastic web 5, lower floor's fibre web 6, spreads the mixed powder 7 of thermal fusing powder and fireproof powder;
(4) fibre web compound: upper strata fibre web 4, elastic web 5, lower floor's fibre web 6 three layers of fibre web are superimposed as composite web 1;
(5) vertical lapping: composite web 1 feeds vertical lapping machine, and hot melt long filament 2 is set on the positive and negative surface of composite web 1, the set-up mode of this hot melt long filament 2 is that the width of composite web 1 is provided with many hot melt long filaments 2 equidistant, side by side, spacing distance is 150mm, again the composite web 1 arranging upper hot melt long filament 2 is carried out vertical lapping, obtain lapping cotton.Fibrage angle 3 between adjacent composite web 1 is less than 1 degree and levels off to 1 degree, and composite web 1 is in vertical, and lapping width is 105mm;
(6) drying: the lapping cotton after vertical lapping operation is heated successively, cooled; Low-melting point polyester staple fiber melted by heating in lapping cotton, the polymer flow of melting also condenses upon in fiber intersection points, becomes have flexible non-weaving cloth when being reinforced after the cooling of lapping cotton.Hot melt long filament 2 melting simultaneously, gets up adjacent composite web 1 bonding, makes the overall honeycomb structure of product formation, improves the elasticity of product.Thermal fusing powder melting in mixed powder 7, is cemented in fireproof powder on the hollow pet staple fiber of the three-dimensional crimp in composite web 1, ptt fiber, makes product have flame retardant effect;
(7) trimming: the irregular part in edge cutting the cotton both sides of lapping;
(8) reel: after trimming, winding, obtained thickness is the high-elastic fireblocking nonwoven cloth of the bonded honeycomb structure of long filament of 105mm.
Claims (4)
1. the high-elastic fireblocking nonwoven cloth of the bonded honeycomb structure of long filament, comprise the multiple composite webs (1) stacked gradually, it is characterized in that: the inside of described composite web (1) is sprinkled with the mixed powder (7) of thermal fusing powder and fireproof powder, composite web (1) joins end to end successively, arrangement mode is in the Z-shaped come and gone, fibrage angle (3) is had between adjacent composite web (1), this web layer angle (3) acute angle for being less than 2 degree, the positive and negative surface of composite web (1) is provided with equidistantly along its width, hot melt long filament (2) side by side, with composite web (1) folding in the Z-shaped come and gone.
2. the high-elastic fireblocking nonwoven cloth of the bonded honeycomb structure of a kind of long filament as claimed in claim 1, it is characterized in that: the thickness of described hot melt long filament (2) is 20 D – 300 D, fusing point is less than or equal to 110 °, and the spacing distance of adjacent hot melt long filament (2) is 5 mm – 300 mm; Described hot melt long filament (2) is a monofilament or a multifilament, and this multifilament is made up of the monofilament of more than two or two; The manufactured materials of described hot melt long filament (2) is nylon or terylene.
3. the high-elastic fireblocking nonwoven cloth of the bonded honeycomb structure of a kind of long filament as claimed in claim 1, it is characterized in that: the fibre web that described composite web (1) is a kind of layer structure, this fibre web comprises the upper strata fibre web (4), elastic web (5), the lower floor's fibre web (6) that superpose successively from top to bottom.
4. a preparation method for the high-elastic fireblocking nonwoven cloth of the bonded honeycomb structure of the long filament according to any one of claim 1-3, is characterized in that: the method comprises the steps:
(1) prepare before becoming net: difference first mixes the various fibrous raw materials needed for preparation upper strata fibre web (4), elastic web (5), lower floor's fibre web (6), shredding, and finish is added in the process of shredding, upper strata fibre web (4) prepares with lower floor's fibre web (6) the mixture that material is the hollow pet staple fiber of low-melting point polyester staple fiber and three-dimensional crimp, in upper strata fibre web (4) with lower floor's fibre web (6), the percentage by weight of low-melting point polyester staple fiber is 15% ~ 30%, and the percentage by weight of the hollow pet staple fiber of three-dimensional crimp is 70% ~ 85%; Elastic web (5) prepare the mixture that material is low-melting point polyester staple fiber and elastic polyester staple fibre, in elastic web (5), the percentage by weight of low-melting point polyester staple fiber is 10% ~ 25%, and the percentage by weight of elastic polyester staple fibre is 75% ~ 90%; Described low-melting point polyester staple fiber is the skin-core structure type polyester staple fiber that fusing point is less than or equal to 110 °; Described elastic polyester staple fibre is ptt fiber or elastic polyester ELK fiber;
(2) mechanical carding becomes net: the fiber after mixing, shredding, adopts mechanical carding to become net method to prepare upper strata fibre web (4), elastic web (5), lower floor's fibre web (6) respectively;
(3) dusting: respectively on upper strata fibre web (4), elastic web (5), lower floor's fibre web (6), spreads the mixed powder (7) of thermal fusing powder and fireproof powder;
(4) fibre web compound: upper strata fibre web (4), elastic web (5), lower floor's fibre web (6) three layers of fibre web are superimposed as composite web (1), elastic web (5) is clipped in the centre of upper strata fibre web (4) and lower floor's fibre web (6);
(5) vertical lapping: the composite web (1) after drying feeds vertical lapping machine, and hot melt long filament (2) is set on the positive and negative surface of composite web (1), the set-up mode of this hot melt long filament (2) be equidistant along the width of composite web (1), be arranged side by side, again the composite web (1) arranging upper hot melt long filament (2) is carried out vertical lapping, obtain lapping cotton, lapping width is 5mm – 200mm;
(6) drying: the lapping cotton after vertical lapping operation is heated successively, cooled;
(7) trimming: the irregular part in edge cutting the cotton both sides of lapping;
(8) reel: after trimming, winding, the high-elastic fireblocking nonwoven cloth of the obtained described bonded honeycomb structure of long filament.
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| CN111663248A (en) * | 2020-05-29 | 2020-09-15 | 江苏鼎良电气科技有限公司 | Thin flame-retardant non-woven fabric for cable and manufacturing method thereof |
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| US20030026927A1 (en) * | 2001-07-31 | 2003-02-06 | Reemay, Inc. | Laminate for vacuum cleaner outer bag |
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