CN104846546A - High-elasticity inflaming retarding non-woven fabric with membrane adhering type honeycomb structure and preparation method thereof - Google Patents
High-elasticity inflaming retarding non-woven fabric with membrane adhering type honeycomb structure and preparation method thereof Download PDFInfo
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Abstract
A high-elasticity inflaming retarding non-woven fabric with a membrane adhering type honeycomb structure comprises a plurality of composite fiber nets which are sequentially overlapped in a back-and-forth Z shape; mixed powder of hot smelting powder and inflaming retarding powder is scattered into the composite fiber nets; the composite fiber nets are connected end to end in sequence; a hot smelting membrane is clamped between the adjacent composite fiber nets. In a manufacturing process, an upper-layer fiber net, an elastic fiber net and a lower-layer fiber net are prepared respectively through procedures of doing preparation before forming the net, and scattering the mixed powder of the hot smelting powder and the inflaming retarding powder on the surface; then the three layers of fiber nets are overlapped by a fiber net composite procedure to form the composite fiber net; the upper-layer fiber net and the lower-layer fiber net are mixtures of low-smelting-point polyester staple fibers and three-dimensional crimped hollow polyester staple fibers; the elastic fiber net is a mixture of the low-smelting-point polyester staple fibers and elastic polyester staple fibers. The hot smelting membranes cover the front and back surfaces of the composite fiber nets through a fiber net membrane covering procedure; the high-elasticity inflaming retarding non-woven fabric with the membrane adhering type honeycomb structure is manufactured by vertically paving the nets, drying, trimming and winding.
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 film, 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 have produce pollute, the discarded object not mortality shortcoming such as reusable edible, and easily turn to be yellow, 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, and the La Sheer utilizing interval yarn to link together is 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 high-elastic fireblocking nonwoven cloth with honeycomb structure, compared with sponge, there is the features such as non yellowing, good permeability, dimensionally stable, its discarded object recoverable, adapts to the consumption concept of environmental protection low-carbon (LC) society.Unique rising structure, makes fiber assembly obtain great elasticity and compressive property.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 the non-weaving cloth of existing honeycomb structure 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 the non-weaving cloth of honeycomb structure 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 film, 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, and between adjacent composite web, angle is 0 degree or levels off to 0 degree, between adjacent composite web, accompany hot melt film.
Described hot melt film is that fusing point is less than or equal to 110 °, thickness is less than the reticular membrane of 0.05mm.
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 film, 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) fibre web overlay film: at the tow sides of composite web, carries out hot melt film overlay film simultaneously, makes composite web front and back hot melt film, forms the mixture of fibre web and film;
(6) vertical lapping: the fibre web after fibre web overlay film is fed vertical lapping machine with the mixture of film, carries out vertical lapping, obtain lapping cotton, lapping width is 5mm ~ 200mm;
(7) drying: the lapping cotton after vertical lapping operation is heated successively, cooled;
(8) trimming: the irregular part in edge cutting the cotton both sides of lapping;
(9) reel: after trimming, winding, the high-elastic fireblocking nonwoven cloth of the obtained described bonded honeycomb structure of film.
Owing to adopting above technical scheme, the high-elastic fireblocking nonwoven cloth of the bonded honeycomb structure of film of the present invention, has following characteristics:
One, in the high-elastic fireblocking nonwoven cloth of the bonded honeycomb structure of a kind of film of the present invention and manufacture method thereof, joining end to end successively, on the positive and negative surface of the composite web in Z-shaped reciprocating folding type, hot melt film is set, when hot melt film in drying technique through heating after melting, cementation can be played between adjacent composite web, increase the cohesive force between composite web, avoid the dispersion between composite web, 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, good springiness, 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.Hot melt film selects netted structure, makes hot melt film only play cementation, does not affect the elasticity of product.Therefore, elasticity of the present invention is fine.
Two, in the high-elastic fireblocking nonwoven cloth of the bonded honeycomb structure of a kind of film of the present invention and manufacture method thereof, composite web is 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 partly can expose the surface at fibre web, 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 film 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 hot melt film 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's not only high elasticity, low cost, fire-retardant, and also 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 6 of composite web 1, upper strata fibre web 3, elastic web 4, lower floor's fibre web 5, hot melt film 2, 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 film, 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 6 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, and between adjacent composite web 1, angle is 0 degree or levels off to 0 degree, between adjacent composite web 1, accompany hot melt film 2.
Described hot melt film 2 for fusing point be less than or equal to 110 °, thickness is less than the reticular membrane of 0.05mm.
Described composite web 1 is a kind of fibre web of layer structure, and this fibre web comprises the upper strata fibre web 3, elastic web 4, the lower floor's fibre web 5 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 film, the method comprises the steps:
(1) prepare before becoming net: first the various fibrous raw materials needed for preparation upper strata fibre web 3, elastic web 4, lower floor's fibre web 5 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, add finish, can prevent electrostatic from producing, affect quality in the process of shredding in mixing shredding.Upper strata fibre web 3 prepares with lower floor's fibre web 5 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 3 with lower floor's fibre web 5, 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 4 prepare the mixture that material is low-melting point polyester staple fiber and elastic polyester staple fibre, in elastic web 4, 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 3, elastic web 4, lower floor's fibre web 5 respectively;
(3) dusting: respectively on upper strata fibre web 3, elastic web 4, lower floor's fibre web 5, spreads the mixed powder 6 of thermal fusing powder and fireproof powder;
(4) fibre web compound: by upper strata fibre web 3, elastic web 4, lower floor's fibre web 5 three layers of fibre web are superimposed as composite web 1, elastic web 4 is clipped in the centre of upper strata fibre web 3 and lower floor's fibre web 5, be convenient to elastic web 4 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 3 or lower floor's fibre web 5, thus the feel of final products is primarily of upper strata fibre web 3, the performance of lower floor's fibre web 5 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 3 of product appearance, the fineness of the doughnut of the three-dimensional crimp in lower floor's fibre web 5 can be selected thinner, the product obtained so both had high elasticity, the feel had again,
(5) fibre web overlay film: at the tow sides of composite web 1, carries out hot melt film 2 overlay film simultaneously, makes composite web 1 front and back hot melt film 2, forms the mixture of fibre web and film.Low-melting point polyester staple fiber is had in the manufactured materials of composite web 1, part low-melting point polyester staple fiber can expose the surface at fibre web, hot melt film 2 selects netted structure, the low-melting point polyester staple fiber be conducive on composite web 1 surface exposes out through netted hot melt film 2, arrive at the surface of adjacent composite web 1, such low-melting point polyester staple fiber is melted by heating in follow-up drying technique, thus the cohesive force increased between composite web 1, avoid layering, improve the elasticity of final products.Physical and mechanical properties in order to avoid hot melt film 2 affects the elasticity of product, selects thickness to be less than the hot melt film 2 of 0.05mm;
(6) vertical lapping: the fibre web after fibre web overlay film is fed vertical lapping machine with the mixture of film, carries out vertical lapping, thus obtain lapping cotton.When the output speed of vertical lapping machine is certain, the speed of lapping is higher, i.e. on the length direction of product, the number of plies of lapping is more, and between adjacent composite web 1, angle is less, more levels off to 0 degree, and composite web 1 is more in vertical, and the elasticity of product is better.By regulating the technological parameter of vertical lapping, making angle between adjacent composite web 1 level off to 0 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;
(7) 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 film 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 6, 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, hot melt film 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;
(8) trimming: the irregular part in edge cutting the cotton both sides of lapping.After drying operation terminates, drying machine exports on the width of fibre web, 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;
(9) reel: after trimming, winding, the high-elastic fireblocking nonwoven cloth of the obtained described bonded honeycomb structure of film.
embodiment 1
Thickness is high-elastic fireblocking nonwoven cloth of the bonded honeycomb structure of film of 200mm and preparation method thereof.
See Fig. 1, Fig. 2, the high-elastic fireblocking nonwoven cloth of the bonded honeycomb structure of a kind of film, comprise the multiple composite webs 1 stacked gradually, the inside of composite web 1 is sprinkled with the mixed powder 6 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, and between adjacent composite web 1, angle is 0 degree or levels off to 0 degree, between adjacent composite web 1, accompany hot melt film 2.The structure of hot melt film 2 is netted, and fusing point is less than or equal to 110 °, thickness is less than 0.05mm.
Described composite web 1 is a kind of fibre web of layer structure, and this fibre web comprises the upper strata fibre web 3, elastic web 4, the lower floor's fibre web 5 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 film, the method comprises the steps:
(1) prepare before becoming net: first the various fibrous raw materials needed for preparation upper strata fibre web 3, elastic web 4, lower floor's fibre web 5 to be mixed respectively, shredding.Anlistatig finish is added in the process of shredding.Upper strata fibre web 3 prepares with lower floor's fibre web 5 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 3 with lower floor's fibre web 5, 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 4 prepare the mixture that material is low-melting point polyester staple fiber and elastic polyester ELK fiber, in elastic web 4, 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 3, elastic web 4, lower floor's fibre web 5 respectively;
(3) dusting: respectively on upper strata fibre web 3, elastic web 4, lower floor's fibre web 5, spreads the mixed powder 6 of thermal fusing powder and fireproof powder;
(4) fibre web compound: upper strata fibre web 3, elastic web 4, lower floor's fibre web 5 three layers of fibre web are superimposed as composite web 1, elastic web folder 4 is in the centre of upper strata fibre web 3 with lower floor's fibre web 5;
(5) fibre web overlay film: at the tow sides of composite web 1, carries out hot melt film 2 overlay film simultaneously, makes composite web 1 front and back hot melt film 2, forms the mixture of fibre web and film;
(6) vertical lapping: the fibre web after fibre web overlay film is fed vertical lapping machine with the mixture of film, carries out vertical lapping, obtain lapping cotton.Between adjacent composite web 1, angle is 0 degree or levels off to 0 degree, and composite web 1 is in vertical, and lapping width is 200mm;
(7) 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 film 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 6, 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;
(8) trimming: the irregular part in edge cutting the cotton both sides of lapping;
(9) reel: after trimming, winding, the high-elastic fireblocking nonwoven cloth of the obtained described bonded honeycomb structure of film.
embodiment 2
Thickness is high-elastic fireblocking nonwoven cloth of the bonded honeycomb structure of film of 5mm and preparation method thereof.
See Fig. 1, Fig. 2, the high-elastic fireblocking nonwoven cloth of the bonded honeycomb structure of a kind of film, comprise the multiple composite webs 1 stacked gradually, the inside of composite web 1 is sprinkled with the mixed powder 6 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, and between adjacent composite web 1, angle is 0 degree or levels off to 0 degree, between adjacent composite web 1, accompany hot melt film 2.The structure of hot melt film 2 is netted, and fusing point is less than or equal to 110 °, thickness is less than 0.05mm.
Described composite web 1 is a kind of fibre web of layer structure, and this fibre web comprises the upper strata fibre web 3, elastic web 4, the lower floor's fibre web 5 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 film, the method comprises the steps:
(1) prepare before becoming net: first the various fibrous raw materials needed for preparation upper strata fibre web 3, elastic web 4, lower floor's fibre web 5 to be mixed respectively, shredding.Anlistatig finish is added in the process of shredding.Upper strata fibre web 3 prepares with lower floor's fibre web 5 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 3 with lower floor's fibre web 5, 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 4 prepare the mixture that material is low-melting point polyester staple fiber and ptt fiber, in elastic web 4, 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 3, elastic web 4, lower floor's fibre web 5 respectively;
(3) dusting: respectively on upper strata fibre web 3, elastic web 4, lower floor's fibre web 5, spreads the mixed powder 6 of thermal fusing powder and fireproof powder;
(4) fibre web compound: upper strata fibre web 3, elastic web 4, lower floor's fibre web 5 three layers of fibre web are superimposed as composite web 1, elastic web 4 is clipped in the centre of upper strata fibre web 3 and lower floor's fibre web 5;
(5) fibre web overlay film: at the tow sides of composite web 1, carries out hot melt film 2 overlay film simultaneously, makes composite web 1 front and back hot melt film 2, forms the mixture of fibre web and film.The thickness of hot melt film 2 is 0.05mm, and structure is netted;
(6) vertical lapping: the fibre web after fibre web overlay film is fed vertical lapping machine with the mixture of film, carries out vertical lapping, obtain lapping cotton.Between adjacent composite web 1, angle is 0 degree or levels off to 0 degree, and composite web 1 is in vertical, and lapping width is 5mm;
(7) 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 film 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 6, 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;
(8) trimming: the irregular part in edge cutting the cotton both sides of lapping;
(9) reel: after trimming, winding, the high-elastic fireblocking nonwoven cloth of the obtained described bonded honeycomb structure of film.
embodiment 3
Thickness is high-elastic fireblocking nonwoven cloth of the bonded honeycomb structure of film 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 film of 105mm, comprise the multiple composite webs 1 stacked gradually, the inside of composite web 1 is sprinkled with the mixed powder 6 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, and between adjacent composite web 1, angle is 0 degree or levels off to 0 degree, between adjacent composite web 1, accompany hot melt film 2.The structure of hot melt film 2 is netted, and fusing point is less than or equal to 110 °, thickness is less than 0.05mm.
Described composite web 1 is a kind of fibre web of layer structure, and this fibre web comprises the upper strata fibre web 3, elastic web 4, the lower floor's fibre web 5 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 film, the method comprises the steps:
(1) prepare before becoming net: first the various fibrous raw materials needed for preparation upper strata fibre web 3, elastic web 4, lower floor's fibre web 5 to be mixed respectively, shredding.Anlistatig finish is added in the process of shredding.Upper strata fibre web 3 prepares with lower floor's fibre web 5 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 3 with lower floor's fibre web 5, 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 4 prepare the mixture that material is low-melting point polyester staple fiber and ptt fiber, in elastic web 4, 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 3, elastic web 4, lower floor's fibre web 5 respectively;
(3) dusting: respectively on upper strata fibre web 3, elastic web 4, lower floor's fibre web 5, spreads the mixed powder 6 of thermal fusing powder and fireproof powder;
(4) fibre web compound: upper strata fibre web 3, elastic web 4, lower floor's fibre web 5 three layers of fibre web are superimposed as composite web 1, elastic web 4 is clipped in the centre of upper strata fibre web 3 and lower floor's fibre web 5;
(5) fibre web overlay film: at the tow sides of composite web 1, carries out hot melt film 2 overlay film simultaneously, makes composite web 1 front and back hot melt film 2, forms the mixture of fibre web and film.The thickness of hot melt film 2 is 0.05mm, and structure is netted;
(6) vertical lapping: the fibre web after fibre web overlay film is fed vertical lapping machine with the mixture of film, carries out vertical lapping, obtain lapping cotton.Regulate the technological parameter of vertical lapping machine, make angle between adjacent composite web 1 be 0 degree or level off to 0 degree, composite web 1 is in vertical, and lapping width is 105mm;
(7) 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 film 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 6, 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;
(8) trimming: the irregular part in edge cutting the cotton both sides of lapping;
(9) reel: after trimming, winding, the high-elastic fireblocking nonwoven cloth of the obtained described bonded honeycomb structure of film.
Claims (4)
1. the high-elastic fireblocking nonwoven cloth of the bonded honeycomb structure of film, 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 (6) 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, between adjacent composite web (1), angle is 0 degree or levels off to 0 degree, between adjacent composite web (1), accompany hot melt film (2).
2. the high-elastic fireblocking nonwoven cloth of the bonded honeycomb structure of a kind of film as claimed in claim 1, is characterized in that: described hot melt film (2) for fusing point be less than or equal to 110 °, thickness is less than the reticular membrane of 0.05mm.
3. the high-elastic fireblocking nonwoven cloth of the bonded honeycomb structure of a kind of film 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 (3), elastic web (4), the lower floor's fibre web (5) 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 film 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 (3), elastic web (4), lower floor's fibre web (5), shredding, and finish is added in the process of shredding, upper strata fibre web (3) prepares with lower floor's fibre web (5) 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 (3) with lower floor's fibre web (5), 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 (4) prepare the mixture that material is low-melting point polyester staple fiber and elastic polyester staple fibre, in elastic web (4), 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 (3), elastic web (4), lower floor's fibre web (5) respectively;
(3) dusting: respectively on upper strata fibre web (3), elastic web (4), lower floor's fibre web (5), spreads the mixed powder (6) of thermal fusing powder and fireproof powder;
(4) fibre web compound: upper strata fibre web (3), elastic web (4), lower floor's fibre web (5) three layers of fibre web are superimposed as composite web (1), elastic web (4) is clipped in the centre of upper strata fibre web (3) and lower floor's fibre web (5);
(5) fibre web overlay film: at the tow sides of composite web (1), carries out hot melt film (2) overlay film simultaneously, makes composite web (1) front and back hot melt film (2), forms the mixture of fibre web and film;
(6) vertical lapping: the fibre web after fibre web overlay film is fed vertical lapping machine with the mixture of film, carries out vertical lapping, obtain lapping cotton, lapping width is 5mm ~ 200mm;
(7) drying: the lapping cotton after vertical lapping operation is heated successively, cooled;
(8) trimming: the irregular part in edge cutting the cotton both sides of lapping;
(9) reel: after trimming, winding, the high-elastic fireblocking nonwoven cloth of the obtained described bonded honeycomb structure of film.
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