CN1034354C - Cross-laminated stretched non-woven fabric and method of making same - Google Patents
Cross-laminated stretched non-woven fabric and method of making same Download PDFInfo
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- CN1034354C CN1034354C CN89100534A CN89100534A CN1034354C CN 1034354 C CN1034354 C CN 1034354C CN 89100534 A CN89100534 A CN 89100534A CN 89100534 A CN89100534 A CN 89100534A CN 1034354 C CN1034354 C CN 1034354C
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Abstract
The present invention relates to a nonwoven fiber product with certain woven fiber fabric strength and a manufacturing method thereof. The non-woven fiber product is provided with a laminated structure composed of a longitude fiber mesh and a woof fiber mesh, wherein the longitude fiber mesh is longitudinally stretched and has longitudinal strength higher than that of a transverse direction; the woof fiber mesh is transversely stretched and has transverse strength higher than that of a longitudinal direction. Layers can form fiber yarns of the longitude fiber mesh and the woof fiber mesh which are not carried out with molecular orientation and can be at least extended to 2 times of the original length before being stretched. In order to cause the inner molecular orientation, fiber of non-orientation is approximately stretched in the process of stretching the meshes.
Description
The present invention relates to cross-laminated non-woven fiber product, this cross-laminated non-woven fiber product is coarctate through fiber web with the latitude fiber web constitutes and its vertical and horizontal have intensity by cross-level.The invention still further relates to the method for making this cross-laminated non-woven fiber product.
In specification and claims, term " through fiber web " refers to: by the fibroplastic net generally along the net longitudinal extension, thereby this netting gear has than horizontal high longitudinal strength.Equally, term " latitude fiber web " refers to: by the fibroplastic net generally along the net horizontal expansion, thereby this netting gear has than vertical high transverse strength.In addition, " cross-laminated non-woven fiber product refers to term: the non-woven fiber product with laminar structure.These goods are by being incorporated in constituting through net and latitude net of which floor intersection extension together.
Common irregular alignment non-woven fiber product has advantage on weight and structure, still, and the intensity that they are only limited, and this intensity can't be compared with the intensity of textile fabric fabric aspect water permeability and filterability, fibrous webs has advantage.Utilize good like this water permeability and filterability, recently, find that non-woven fiber product has new purposes---" use fabric " (geo-textileo) (fibrous material that is used for civil construction project and structure), this new purposes is restricted basically, because the intensity of the non-woven fiber product of common irregular alignment is limited.In view of above-mentioned difficulties, people try hard to strengthen the intensity of common fibrous webs.According to this purpose, a kind of fibrous webs is provided, it has laminar structure, and this structure is made of through fiber web and the non-woven fibre latitude fiber web that is arranged in parallel the non-woven fibre that is arranged in parallel, and is that method with right-angled intersection connects together through fiber web and latitude fiber web.The fibrous webs intensity of lamination increases like this, and still, this intensity still is lower than " use fabric " required intensity of building and civil engineering structures.
In view of above-mentioned difficulties, the object of the present invention is to provide a kind of cross-laminated non-woven fiber product, it has similar in appearance to the intensity of textile fabric fabric, thereby, it can be used as with fabric promptly, the fibrous material of civil engineering engineering structure.
Another object of the present invention provides a kind of to make the method for this cross-laminated stretched non-woven fibre efficiently.
According to a first aspect of the invention, provide a kind of cross-laminated non-woven fiber product to comprise:
A. non-woven fibre first net that is stretched, this first net is made of many fibers that are stretched substantially that combine, and this fiber that is stretched is the fiber of non-orientation before it is stretched.This first net is stretched in the vertical so that the fiber of each non-orientation is stretched substantially, thus, causes the molecularly oriented that it is inner.
B. non-woven fibre second net that is stretched, this second net is made of the fiber of many quilt stretchings that combine.This this fiber that is stretched is the fiber of non-orientation before it is stretched, and this second net is stretched so that the fiber of each non-orientation is stretched substantially on it is vertical, thus, causes the molecularly oriented that it is inner.Above-mentioned second net, by make above-mentioned the one the second nets separately on the bearing of trend in mutual perpendicular mode, force together with above-mentioned first stratum reticulare.
According to a second aspect of the invention, provide a kind of cross-laminated non-woven fiber product to comprise:
A. non-woven fibre first net that is stretched, this first net is made of many fibers that are stretched substantially that combine, and this fiber that is stretched is the fiber of non-orientation before it is stretched.This first net is stretched in the vertical, so that the fibre sheet of each non-orientation is stretched substantially, thus, causes the molecularly oriented of portion within it.
B. non-woven fibre second net that is stretched, this second net is made of many fibers that stretched substantially that combine, this fiber that is stretched is non-orientation before it is stretched, above-mentioned second net is stretched in the horizontal, so that the fiber of each non-orientation is stretched substantially,, cause the molecularly oriented of portion within it by thus, this second net, vertical mutually laminated together by above-mentioned first and second nets in the mode of quadrature at bearing of trend separately.
According to a third aspect of the present invention, provide a kind of method of making the cross-laminated stretched non-woven fibre, it comprises the steps:
A. make non-woven fibre first net of irregular orientation by the non-woven fibre of the non-orientation of cardinal principle that combines,
B. first net that stretches in the vertical so that the fiber of each non-orientation is stretched substantially, thus, causes its interior molecules orientation,
C. make non-woven fibre second net of irregular alignment by the non-substantially orientation fibers that combines,
D. this second net that stretches in the vertical so that the fiber of each non-orientation is stretched substantially, thus, causes the molecularly oriented of portion within it;
E. become this second net transversely truncation single length to equal the second net sheet one by one of the above-mentioned first net width substantially;
F. overlapping a little mutually by the adjacent edge that makes the first net draw direction and mutual perpendicular mode of the second net draw direction and the above-mentioned second net sheet, the above-mentioned second net sheet is pressed with above-mentioned first stratum reticulare.
According to a fourth aspect of the present invention, provide a kind of method of making the cross-laminated stretched non-woven fibre, its step is as follows:
A. make non-woven fibre first net of irregular alignment by the fiber of the non-orientation of cardinal principle that combines;
B. this first net that stretches in the vertical so that the fiber of each non-orientation is stretched substantially, thus, causes its interior molecules orientation,
C. make non-woven fibre second net of irregular alignment by the fiber of the non-orientation of cardinal principle that combines;
D. this second net that stretches in the horizontal so that the fiber of each non-orientation is stretched substantially, thus, causes its inner molecularly oriented;
E. in above-mentioned first, second net mutual perpendicular mode of draw direction separately, first, second stratum reticulare is forced together.
In specification and claim, term " non-orientation fibers " refers to such fiber, and they are not rolled, and stretches, and their molecule is orientation not, and perhaps, when stretching with suitable draft temperature, they can extend the twice greater than raw footage.
By with reference to detailed explanation and accompanying drawing, this accompanying drawing has shown the embodiment of the preferred structure of several embodiments principle of the present invention by the mode of example, and for being familiar with those skilled in the art, many other advantages and features of the present invention are clearly.
Fig. 1 is the present invention is made cross-laminated nonwoven articles method by the nonwoven web of two identical continuous longitudinal stretchings a schematic diagram.
Fig. 2 represents that the present invention is intersected by a longitudinal stretching nonwoven web and another cross directional stretch nonwoven web and is pressed into cross-laminated nonwoven articles method and schematic diagram.
Fig. 3 manufactures the upward view of the transversely arranged filametntary rotation nozzle of fiber web.
Fig. 4 is the cutaway view of joining the equipment of use with rotation nozzle shown in Figure 3, is used for manufacturing having transversely arranged filametntary non-woven fibre.
Fig. 5 is along the cutaway view of V-V line among Fig. 4.
Fig. 6 is a longitudinal tensile fixture general structure schematic diagram.
Fig. 7 is the rolling device general structure schematic diagram of roll extrusion and stretching spinning-less fiber.
Fig. 8 represents to be used for the pulley apparatus perspective illustration of cross directional stretch non-woven fibre.
Fig. 9 represents to comprise a pair of part sectional drawing that is used for the grooved roller device of compounding practice cross directional stretch non-woven fibre.
Describe the present invention below in detail:
Fig. 1 represents a kind of method of the manufacturing of lamination continuously cross-laminated stretched non-woven fibre.The latitude fiber web 2a through fiber web 1 and a series of non-woven fibres that are stretched of the non-woven fibre that vertical (length direction) that the cross-laminated stretched non-woven fibre generally is made of vertical fiber arranged silk stretches, 2b, 2c constitutes.By the overlapped longitude and latitude fiber web that makes in the edge of latitude fiber is combined.When continuous latitude fiber web 2 is laterally delivered to through fiber web 1 top by the timing relationship that moves through fiber web relatively, block a section length that equals the footpath web width substantially by continuous latitude fiber web 2 orders longitudinal stretching non-woven fibre (being same as through fiber web 1), latitude fiber web 2a-2c is disposed on fiber web 1.Then by the heat bonding handle directly with cementing medium, latitude fiber web 1 and 2 bonds together, cementing medium with continuously or the form of being interrupted the band glue fiber of making remain at least through, latitude fiber web 1, on one of them of 2, cementing medium glue can be the main polymer in the extruding, short raw fiber, rubber powder or blowing agent, bonding warp, latitude fiber web 1 and 2 can be immersed in it in liquid glue earlier as in the latex, push then to remove unnecessary glue, adopt natural air drying and dry then with method or the heated drying chamber or the infra-red furnace of hot blast drying, warp, the latitude fiber web also can be used mechanical means, is stitched together with the stylus printer hole of being with hangnail.
According to above-mentioned cross-laminated method, can produce the cross-laminated stretched non-woven fiber with the speed of per minute 40-50 rice, even the width of this fiber is greater than 3 meters.It is through, the fibroreticulate cross-laminated intensity that filament mutually combines that increases of latitude that this longitude and latitude fiber web 1 and 2 also has an advantage because before compacting is bonding drawing of fiber net 1 and 2 o'clock contingent partial fracture, disconnection can remedy and improve.The cross-laminated stretched non-woven fiber of Zhi Zaoing all has higher intensity on length direction and width like this.For example, non-woven fibre of the present invention with the non-woven fibre of the common irregular alignment of weight relatively, tensile strength is up to more than 3 times.Equally, the impact strength of fiber of the present invention, tensile strength, shock resistance, seam tensile property are about five times of non-woven fibre of common irregular alignment.In addition, compare with preceding described two kinds of fibers, Young's modulus of the present invention will exceed five times, and elongation is less.In addition, the non-woven fibre that is stretched across of the present invention has fabulous DIMENSIONAL STABILITY.
Fig. 2 represents another kind of laminating method of the present invention, and wherein, what have vertically sends in the fiber net lamination device to the continuous nonwoven web 3 of nonwoven web 1 that stretches and laterally broad ways stretching in other words along length in other words mutually through fiber web stackedly.Overlapping footpath, latitude fiber web 1 and 3 sequentially are laminated on together when mip rolls 4a, the 4b of a pair of compounding practice, hot pressing roller 5 and mip rolls 6 transmit, and mip rolls 6 is that relatively hot pressure roller 5 is installed.Warp and latitude fiber web 1 and 3 also are with the method gluing shown in the embodiment among Fig. 1.Using under the situation of latex as adhesive, when being centered around mip rolls 4a through, latitude fiber web 1,3 when transmitting, mip rolls 4a part is immersed in the groove of latax so that provide glue to fiber web 1,3.The laminated nonwoven fibre strength of embodiment 1 is basic identical among laminated nonwoven fiber 7 and Fig. 1.Opposite with the latitude fiber web 2a-2c of embodiment among Fig. 11, because latitude fiber web 3 is continuous, there is not lap, on whole area, be homogeneous texture so there is not fiber 7.
Formation is the fiber of non-substantially orientation before stretching through the fiber of fiber web 1,2 and latitude fiber web 2a-2c.The device of melt spinning comprises a nozzle plate or spinning head, it has spinning melt that center spinneret 8 is used for pushing polymerization system material downwards forming filament 9, and several the 1st tiltedly make the hole from 10-1---10-6 (embodiment expresses 6 figure) with identical angular spacing around nozzle 8 circular array.They are used for filament 9 jet.When fiber is extruded, make its in the shape of a spiral shape move down the taper that forms downward flaring, a pair of antipodal level second air admission hole 11, this hole 11 is respectively on the both sides of nozzle 8, and in the first pore 10-1---the downstream of 10-6, jet towards the capable direction of motion of mutually opposed Horizon in dividing plate net 12, thus spray feed chew 8 under form two strands of air blankings.Two bursts of gas shocks cause the screw of fiber 9, laterally outwards form net 13 at dividing plate on 12 along distributing perpendicular to nonwoven web 13 directions of motion simultaneously.
The 1st oblique pore 10-1 of spinning head---10-6 and nozzle 8 is tangent line and extends as shown in Figure 3, and the center line of nozzle 8 tilts to extend as shown in Figure 4 at an angle relatively.Because this arrangement, from each pore 10-1---greatly to merging together, this meet leaves more than 8 centimetres of nozzles to greater than ten centimeters downwards on a scope for air-flow that 10-6 blows out.The air flow that compiles like this causes the screw of aforesaid fiber 9.The fiber 9 that drops on the screen cloth 12 is mainly made non-woven fibre 13 by transversely arranged or arrangement, so non-woven fibre 13 is particularly suitable for carrying out cross directional stretch.In addition, if from the 1st pore 10-1---the air flow that 10-6 blows out impacts fiber 9 is distributed on the certain limit it on a large scale before the air-flow that fiber 9 is blown out by the 2nd pore 11 distributes, can be with the 1st pore 10-1---10-6 is arranged near the nozzle 8 as the crow flies.The melt-spun device of producing non-woven fibre 13 has a spinning head, and the width of this device is 100mm-300mm.Can produce with another kind of melt-spun device greater than the 300mm non-woven fibre, this device is furnished with the spinning head of a plurality of horizontally sets.In addition, by utilize the melt-spun device energy high-speed production fine groove non-woven fibre that a plurality of spinning heads are set on non-woven fibre is vertical.
From the 1st pore 10-1---the fusion temperature to be higher than the polymeric material of making fiber 9 of the air that 10-6 and the 2nd pore 11 blow out heats.To the 1st pore 10-1---whether the heating of the air that blows out in 10-6 and the 2nd pore 11 can save, and this depends on the kind of used polymeric material.Use hot-air, the fiber 9 during shaping is without basic molecularly oriented.
The aforesaid spinning head that is used to make the non-woven fibre that is made of non-molecule orientation fibers is provided with along the fibre length direction substantially.In this case, the position of spinning head from Fig. 3 changeed 90 ° around the center line of nozzle 8.Extend in this position pore 11 non-woven fibre travel direction when making the position that reaches the 2nd pore 11.The non-woven fibre of making like this is particularly suitable for the longitudinal stretching method.
The material that is suitable for manufacturing non-woven fiber product of the present invention comprises polyolefin for example high-density polyethylene (HDPE) or polypropylene (PP), polyester, nylon, polyvinyl chloride, polypropylene is fine, polyvinyl alcohol, polyurethane and other polymer, they are suitable for being stretched, and intensity increases after stretching.
According to an important characteristic of the present invention, the raw material that are used for manufacturing non-woven fibre comprise the fiber of non-orientation substantially.The characteristic of the fiber of non-orientation is as follows:
(a) yield strength is low: can elongate with little power;
(b) if any proper temperature long development length (than long several times of original length) can be arranged
(c) and suitably under the room temperature higher-strength is arranged after draft temperature stretches.
Experiment shows that the non-woven fiber product that non-orientation fibers makes can be stretched under certain pulling force, this pulling force is lower than or is substantially equal to the intensity that mutually combines between each fiber.In this case, each filament is stretched to a certain degree---and they are roughly parallel to draw direction and are rearranged.(ratio of (broad ways) changed to 5: 1-10 from 7: 3: 1 scope with transverse strength by the longitudinal strength that stretches like this (along its length) owing to each fiber.
In fact strict, non-orientation fibers can have molecularly oriented fully, yet non-orientation fibers comprises that those can be made by melt-spun than the fiber of this high-elongation of fiber (preferably greater than 2 times) of the long several times of raw footage, as previously mentioned and can be referring to Fig. 3 to 5.
Opposite with non-woven fibre of the present invention, the non-woven fibre of common irregular alignment only is to connect structure with the mechanical attachment method or with the bonding filametntary plane that combines of bond medium, because bond strength is less than monofilament intensity between the fiber, this class non-woven fibre that only stretches can cause the destruction that mutually combines between the filament automatically before filament stretches substantially or rearranges.Have, common drawing process is never considered various scramblings again, promptly shows the thickness of non-woven fibre.Combination degree between the filament, and the equal Shu Li between the non-woven fibre.The non-woven fibre of these scramblings may cause fracture because stress concentrates on some the structural weak place of non-woven fibre or the part when stretching.Can not make non-woven fibre produce the effect that stretches at double with common drawing process like this.
Have, common non-woven fibre comprises staple fibre or filament again.Spinning in the fiber of the irregular alignment that can make owing to the available again wet processing method of processing method, staple fibre can link together securely with mechanical connection or the method that sticks with glue knot.Because the firm connection of staple fibre, the stretching of non-woven fibre is practically impossible.Even when non-woven fibre stretched, the tensile force that is distributed on whole fibers was uneven.In addition, by the non-woven fibre that filament is formed, if used filament has bubble or a large amount of impurity, fiber also is to be difficult to stretch.Common filament stretched before being processed into non-woven fibre to be strengthened, for example when filament in when weaving, filamentary intensity is therefore much bigger than the intensity that mutually combines between the filament, so that the stretching of stretching spinning-less fiber will can not cause destroying and filametntaryly mutually combine and stretch or rearrange.Can be stretched in the vertical with the device among Fig. 6 or by device among Fig. 7 generally along vertical arrangement or along the non-woven fibre that the non-orientation fibers 9 that the non-woven fibre length direction is arranged constitutes.
In the device in Fig. 6, non-woven fibre 14 is a pair of pressure roller 15a by compounding practice, and 15b sends into, and during this non-woven fibre 14 was preheated, it transmitted around roller 16.Then, the non-woven fibre 14 of preheating sequentially is transmitted around a pair of draw roll 17a and the 17b that separate a little.In the present embodiment, when draw roll 17b when being higher than draw roll 17a rotational speed, fiber 14 is by longitudinal stretching.Because stretching spinning-less fiber 14 along its length, each fiber all is stretched, and thus, causes wherein inner molecularly oriented.Like this, when non-woven fibre that longitudinal stretching is crossed 14 imported on the Heat treating roll 18, it was by heat cure.The stretching spinning-less fiber 14 of heat cure roller 19 cooling curings that are cooled are again removed from pressure roller 20 then.The stretching spinning-less fiber removed like this constitutes the non-woven fibre that stretches along its length continuously through fiber web 21, this fiber web 21 than the back as produce lamination stretching spinning-less fiber goods through fiber web 1,2, as described above.As depicted in figs. 1 and 2.In order to obtain uniform stretching spinning-less fiber, the drawing zone between draw roll 17a and the 17b is limited to minimum of a value.As a result, the diameter of draw roll 17a and 17b is less, and they are closely installed mutually and put.Preferably drawing zone is less than 1/10th of fiber web 14 original widths.
In device shown in Figure 7, the non-woven fibre 14 that the non-orientation fibers of vertically arranging generally along non-woven fibre 14 constitutes roughly is to move with non-woven fibre 14 length directions, sequentially center on a pair of pressure roller 22a, the 22b of compounding practice, live-rollers 23, a pair of backer roll 24a of compounding practice and 24b and pressure roller 25 are carried. Backer roll 24a and 24b are heated to suitable draft temperature and define the initial or original depth that its roller gap is less than non-woven fibre 14.Because backer roll 24b changes soon than backer roll 24a, when pushing through non-woven fibre 14 between backer roll 24a and the 24b, it is stretched along its length.By stretching spinning-less fiber 14 along its length, each filament all is stretched so that causes the molecularly oriented that it is inner.It is heated when hot pressing roller 24b is directed when the non-woven fibre 14 that stretches along its length.Jia Re stretching spinning-less fiber 14 is removed from pressure roller 25 then.
This non-woven fibre of removing from device 14 constitutes the continuous footpath fiber web 26 of the non-woven fibre that the footpath stretches along its length, this footpath fiber web be used as afterwards lamination stretching spinning-less fiber goods through fiber web 1 and 2, as previously mentioned also can be with reference to figure 1 and Fig. 2.This stretching rolling depression method has special advantage, and non-woven fibre can elongate several times, though non-woven fibre be not uniform thickness or fiber between mutual adhesion also like this when irregular.Another advantage is that the footpath fiber web that is stretched has the pearly-lustre surface.
The non-woven fibre that constitutes along the fiber 9 of the transversely arranged non-orientation of non-woven fibre can be stretched by the device lateral among Fig. 8 or Fig. 9.
Device shown in Fig. 8 comprises the belt pulley 29a and the 29b of a pair of lateral spacing, rotate and be symmetrical arranged with identical peripheral speed with the direction of motion of non-woven fibre 27, can limit two curved lines of expansion gradually along the neighboring, have a pair of endless- belt 30a and 30b to be defined pulling force tension on the following peripheral part of belt pulley 29a, 29b of expansion curved line.Belt pulley 29a and 29b lower part are in heating clamber 32.This heating clamber is used for heating non-woven fibre 27 when non-woven fibre 27 is centered around belt pulley 29a and the last conveying of 29b, in the operating process, longitudinally the non-woven fibre 27 of sending belt pulley 29a, 29b to by slewing rollers 28 is on its relative both sides or say that the marginal portion is clamped by belt pulley 29a, 29b and corresponding belt 30a and 30b, then when the two edges that clamp by two expand curved line the time be stretched.Because such stretching spinning-less fiber 27, cause the molecularly oriented that it is inner during non-orientation fibers cross directional stretch.During stretching, the hot water that non-woven fibre 27 is provided in heating clamber 32, hot-air or infrared heater heating.With under the situation of hot-air, preferably force air to pass non-woven fibre 27, increase the thermal efficiency like this.The non-woven fibre of cross directional stretch is that remove and constitute the latitude fiber web 33 of the non-woven fibre of cross directional stretch from slewing rollers 31, and this fiber web is afterwards as the latitude fiber web 3 of producing the lamination stretching spinning-less fiber, as shown in Figure 2.
Device among Fig. 9 comprises fluted roller 34a, the 34b of a pair of compounding practice, each roller 34a and 34b have a lot along the flat tooth 35 at interval of periphery, be meshed with the tooth 35 on relative grooved roller 34b or the 34a, when non-woven fibre pushes through between roller 34a, 34b by cross directional stretch.Cross directional stretch non-woven fibre 36 is stretched tight will pass through a pair of similar fluted roller then at least on stenter.(not shown) is through the rapid cross directional stretch of multistep, and last non-woven fibre has high draw ratio and structurally is uniform.Owing to used fluted roller 34a and 34b.In fact each horizontal juxtaposed narrow zone between adjacent teeth and roller 34a, 34b just drawn fiber.The stretching of this segmentation can remedy or eliminate the irregular of uneven thickness on the non-woven fibre and interfibrous restraining force, adhesion.Though do not express, the opposite end of each fluted roller 34a and 34b is a slotless, makes it can clamp the edge of non-woven fibre securely when stretching.Also can use and at the edge that around between the belt of grooved roller 34a, 34b opposed end, clamps non-woven fibre 36 of grooved roller 34a, 34b and a pair of annular tension.
Obviously according to above-mentioned principle, the present invention can have multiple improvement.So in claims scope, the present invention also can implement by other method.
Claims (22)
1. a cross-laminated non-woven fiber product is characterized in that comprising:
A. stretching spinning-less fiber first net that constitutes by the many fiber filaments that are stretched substantially that combine, the above-mentioned fiber that is stretched is the fiber of non-orientation before it is stretched, above-mentioned first net is stretched in the vertical so that the fiber of each non-orientation is stretched substantially, cause thus its inside molecularly oriented;
B. stretching spinning-less fiber second net that constitutes by the many fiber filaments that are stretched substantially that combine, the above-mentioned fiber that is stretched is the fiber of non-orientation before it is stretched, above-mentioned second net is stretched in the vertical so that the fiber of each non-orientation is stretched substantially, cause its inner molecularly oriented thus, first, second net is crossed by above-mentioned second Netcom, and the mutual perpendicular mode of draw direction and first stratum reticulare force together separately.
2. by the cross-laminated non-woven fiber product of claim 1, it is characterized in that each above-mentioned first, second net all has the endwise tensile strength greater than 5 times of its net width tensile strength.
3. a cross-laminated non-woven fiber product is characterized in that comprising:
A. stretching spinning-less fiber first net that constitutes by the many fiber filaments that are stretched substantially that combine, the above-mentioned fiber that is stretched is the fiber of non-orientation before it is stretched, above-mentioned first net is stretched in the vertical so that the fiber of each non-orientation is stretched substantially, cause thus its inside molecularly oriented and
B. stretching spinning-less fiber second net that constitutes by the many fiber filaments that are stretched substantially that combine, the above-mentioned fiber that is stretched is the fiber of non-orientation before it is stretched, above-mentioned second net is stretched in the horizontal so that the fiber of each non-orientation is stretched substantially, cause its inner molecularly oriented thus, first, second net is crossed by above-mentioned second Netcom, and the mutual perpendicular mode of draw direction and first stratum reticulare force together separately.
4. by the cross-laminated non-woven fiber product of claim 3, it is characterized in that this first netting gear has the endwise tensile strength greater than 5 times of its net width tensile strength.
5. a method of making the cross-laminated stretched non-woven fibre is characterized in that, its step comprises:
A. make irregular alignment non-woven fibre first net by the fiber filament of the non-orientation of cardinal principle that combines;
B. stretch this net in the vertical so that the fiber of each non-orientation is stretched substantially, thus, cause its inner molecularly oriented;
C. make irregular alignment non-woven fibre second net by the fiber of orientation substantially that combines;
D. stretch this second net in the vertical so that the fiber of each non-orientation is stretched substantially, thus, cause its inner molecularly oriented;
E. become this second net transversely truncation single length to equal the second net sheet one by one of the above-mentioned first net width substantially;
F. arranged side by side mutually by the adjacent edge that makes the first net draw direction and mutual perpendicular mode of the second net draw direction and the above-mentioned second net sheet, above-mentioned second net sheet and above-mentioned first stratum reticulare are forced together.
6. by the method for claim 5, it is characterized in that above-mentioned each first, second net all has the endwise tensile strength greater than 5 times of the tensile strength of its net width.
7. by the method for claim 5, it is characterized in that with suitable draft temperature heating the time, above-mentioned each first, second net is longitudinally stretched to length greater than 2 times of raw footages at drawing zone, above-mentioned drawing zone is netted 1/10th of former width less than it.
8. by the method for claim 5, it is characterized in that: the pressure roller roll extrusion less than the roller gap of its net original thickness that has with a pair of compounding practice is crossed by above-mentioned each first, second Netcom, and is stretched.
9. by the method for claim 5, it is characterized in that the fiber of above-mentioned big orientation has the percentage elongation greater than 100% under suitable draft temperature.
10. by the method for claim 5, it is characterized in that the fiber of above-mentioned non-orientation is made by the melt-spun of polymeric material, when spraying, the fiber of this non-orientation is by scattering to be higher than the thermal current that above-mentioned polymeric material melting temperature heated.
11. method by claim 10, it is characterized in that, the fiber of the above-mentioned non-orientation of extruding from nozzle at first forces its spiral shell to execute motion to form the taper of expanding downwards by applying thermal air current that tangent line impacts this fiber, thereafter, force its substantially non-woven fibre vertically on expansion apply the two opposed air-flows that spray on the position of laterally blowing over non-woven fibre and being lower than above-mentioned nozzle simultaneously and produce.
12. make the method for cross-laminated stretched non-woven fibre, it is characterized in that its step comprises:
A. make non-woven fibre first net of irregular alignment by the fiber filament of the non-orientation of cardinal principle that combines;
B. stretch this first net in the vertical so that the fiber of each non-orientation is stretched substantially, thus, cause its inner molecularly oriented;
C. make non-woven fibre second net of irregular alignment by the fiber of the non-orientation of cardinal principle that combines;
D. stretch this second net in the horizontal so that the fiber of each irregular orientation is stretched substantially, thus, cause its inner molecularly oriented;
E. by the mutual perpendicular mode of the draw direction separately that makes above-mentioned first, second net, first, second stratum reticulare is forced together.
13. the method by claim 12 is characterized in that above-mentioned first netting gear has the endwise tensile strength greater than 5 times of its net width tensile strength.
14., it is characterized in that when heating with proper temperature, above-mentioned first net longitudinally is stretched to length greater than 2 times of raw footages at drawing zone by the method for claim 13, above-mentioned drawing zone is netted 1/10th of former width less than it.
15., it is characterized in that above-mentioned first Netcom crosses and is used for having less than the pressure roller roll extrusion in the roller gap of its net original thickness of compounding practice is stretched by the method for claim 13.
16. the method by claim 13 is characterized in that, the fiber of above-mentioned non-orientation has the percentage elongation greater than 100% under suitable draft temperature.
17. by the method for claim 13, it is characterized in that the fiber of above-mentioned non-orientation is made by the melt-spun of polymeric material, when spraying, the fiber of this non-orientation is by scattering to be higher than the thermal current that above-mentioned polymeric material melting temperature heated.
18. method by claim 13, it is characterized in that, the fiber of the above-mentioned non-orientation of extruding with nozzle at first forces its screw to form by the taper of expansion down by applying the thermal air current that tangent line impacts this fiber, thereafter, force its substantially non-woven fibre vertically on expansion, simultaneously, apply and laterally blow over above-mentioned non-woven fibre and produce being lower than on the position that above-mentioned spray prevents ejection two opposed air-flows.
19. method by claim 13, it is characterized in that, by utilizing and at a pair of opposite edge that clamps second net between with same peripheral velocity pivoted pulley and a pair of endless-belt, this second net stretches, above-mentioned belt pulley defines two curved lines of expansion gradually thereon and along its circumferential edges, above-mentioned a pair of endless-belt under tension around the circumference tensioning of belt pulley separately and extend along the curved line of above-mentioned expansion gradually respectively, after this, move clamped like this edge along the above-mentioned curved line of expansion gradually.
20. the method by claim 19 is characterized in that, the above-mentioned curved line of expansion gradually is positioned within the heating clamber.
21., it is characterized in that above-mentioned second net is stretched through at least one pair of compounding practice trough of belt draw roll by the method for claim 13, the tooth that each grooved roller has a plurality of parallel interval meshes with the tooth of relative grooved roller.
22. the method by claim 21 is characterized in that, above-mentioned second net sequentially is stretched through a plurality of above-mentioned trough of belt draw rolls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN89100534A CN1034354C (en) | 1989-01-30 | 1989-01-30 | Cross-laminated stretched non-woven fabric and method of making same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN89100534A CN1034354C (en) | 1989-01-30 | 1989-01-30 | Cross-laminated stretched non-woven fabric and method of making same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1044685A CN1044685A (en) | 1990-08-15 |
| CN1034354C true CN1034354C (en) | 1997-03-26 |
Family
ID=4853912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN89100534A Expired - Lifetime CN1034354C (en) | 1989-01-30 | 1989-01-30 | Cross-laminated stretched non-woven fabric and method of making same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1034354C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1092261C (en) * | 2000-06-13 | 2002-10-09 | 张玺钧 | Making method of prestressed non-woven fabric |
| CN101880943A (en) * | 2010-04-16 | 2010-11-10 | 江苏安格特新材料科技有限公司 | Warp and weft overlapping non-woven composite material |
| JP5731948B2 (en) * | 2011-04-06 | 2015-06-10 | 旭化成せんい株式会社 | Thermoplastic nonwoven fabric |
| FR2996565B1 (en) * | 2012-10-04 | 2014-11-28 | Saint Gobain Isover | INSTALLATION AND METHOD FOR MANUFACTURING THERMAL AND / OR PHONIC INSULATION PRODUCT |
| CN108442035B (en) * | 2018-04-28 | 2019-11-05 | 阳光卫生医疗新材料江阴有限公司 | A kind of preparation method and non-woven cloth of unidirectional miniature non-woven cloth |
-
1989
- 1989-01-30 CN CN89100534A patent/CN1034354C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CN1044685A (en) | 1990-08-15 |
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