CN102797116B - Felting needle for producing thick non-woven material containing reinforced layer - Google Patents
Felting needle for producing thick non-woven material containing reinforced layer Download PDFInfo
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- CN102797116B CN102797116B CN201210340762.7A CN201210340762A CN102797116B CN 102797116 B CN102797116 B CN 102797116B CN 201210340762 A CN201210340762 A CN 201210340762A CN 102797116 B CN102797116 B CN 102797116B
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H18/00—Needling machines
- D04H18/02—Needling machines with needles
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Abstract
The invention relates to a felting needle for producing a thick non-woven material containing a reinforced layer. The structure and parameters of a needle tip, a needle waist and a needle handle of the conventional felting needle are kept, and the needle consists of three parts, namely a matrix with an elliptical cross section, a rib which is integrated with the matrix and has two isosceles triangle-shaped sections, and 2-3 hooks formed on each vertex edge of the rib. When the felting needle is used for needling, an included angle between the long diameter of the transverse section of the matrix of the needle and the warp yarn guide direction is required to be set to be 45 to 90 degrees, so that warp yarns or weft yarns of the reinforced layer can be opened on the side face of the long diameter of the elliptically cylindrical matrix of the needle, and the hooks are hardly contacted with the warp yarns or weft yarns of the reinforced layer; and therefore, the damage of the warp yarns or weft yarns of the reinforced layer is greatly lightened, and the reinforced layer in the final product has high strength retention rate. The felting needle is easy and convenient to process, is suitable for a single warp yarn layer and suitable for needling and reinforcing the thick non-woven material with a woven reinforced layer; and the product can be widely applied to the fields of high-temperature-resistant filter materials, geotextile, sofa synthetic leather base fabrics and the like.
Description
Technical field
The present invention relates to a kind of pricker for the production of nonwoven material, especially relate to a kind of pricker for the production of the thick non-woven material containing reinforcing layer.This pricker coordinates corresponding pinprick reinforcement method, and be particularly suitable for the acupuncture processing of the thick non-woven material of the reinforcing layer of woven fabric containing warp thread, weft yarns or single warp thread, the strength retention of the reinforcing layer of made thick non-woven material is high.
Background technology
Because needled punched nonwoven material also exists the design feature that porosity is high, pore-size is little, thus there is good permeability, strainability and heat-insulating property, therefore, its application expands rapidly other industry fields to, as felt, high temperature resistance filtration material, highway subgrade geotextiles, high-tensile conveyer belt, sofa synthetic leather base cloth etc.But needled punched nonwoven material is by flexible entanglement the and being reinforced each other of fiber in fibre web, and compared with woven fabric, its ultimate strength is on the low side, elongation at break is bigger than normal, and its DIMENSIONAL STABILITY is poor in actual use.In order to overcome above-mentioned shortcoming, people are when manufacturing thicker needled punched nonwoven material, adopt and to implant reinforcing layer (i.e. the woven fabric of warp thread, weft yarns or single warp thread) between upper and lower web layer and form " sandwich " composite construction, to improving product strength and DIMENSIONAL STABILITY.But, the needle of conventional nonwoven pricker used is triangular-section, its three seamed edges have usually the briar tooth of 2 ~ 3 punching band fibers, the pricker of this structure of pin leaf, when puncturing the fibre web containing reinforcing layer, the briar tooth inevitably caused on one or two seamed edges is hooked the fiber of reinforcing layer in the woven fabric or single warp thread of, weft yarns, when briar tooth hooks the fiber in these yarns of reinforcing layer and is in high-speed motion, very easily cause the fibrous fracture in these yarns, cause reinforcing layer brute force to decline.Therefore, the pricker of conventional triangular-section structure of pin leaf cannot adapt to the special process requirement of the acupuncture processing containing the thick non-woven material of reinforcing layer.
For this reason, people, to the pinprick reinforcement method of the thick non-woven material containing reinforcing layer, have especially carried out large quantifier elimination to improving pricker structure of pin leaf in its method, specific as follows:
Chinese patent ZL90215336.6 " a kind of embroidery needle for needling " discloses the pricker that a kind of active section cross section is olive shape (prismatic).This pricker needle cross section is olive shape, two major diameter ribs of olive shape cross section active section are provided with some briar tooths, article two, minor axis rib do not have briar tooth, when the felt of the reinforcing layer of work sheet one warp thread composition, before acupuncture, the major diameter of setting needle olive shape cross section is parallel with the warp thread of reinforcing layer, briar tooth then during acupuncture on major diameter rib can not hook the fiber in warp thread, thus alleviates the damage of pricker to warp thread, improves the longitudinally powerful of final felt.But, the thick non-woven material acupuncture this pricker being used for the reinforcing layer interweaved containing warp, weft yarn adds man-hour, no matter how the major diameter direction of needle olive shape cross section sets, the hook thorn always had on one or two seamed edges does great damage to the warp thread of reinforcing layer or weft yarn, even cause filling yarn simultaneously impaired, cause that the ultimate strength of thick non-woven material reduces, shortening in service life.Therefore, this pricker is not suitable for the acupuncture processing of the thick non-woven material for the reinforcing layer interweaved containing warp, weft yarn.
Chinese patent ZL201020167528.5 " pricker of non-woven fabrics needle machine " discloses a kind of pricker of nonwoven needled machine.The cross section of this pricker needle includes two puncture faces and a puncture pressure surface, and two puncture faces are in falling " V " font, and puncture pressure surface is the cambered surface be connected with two puncture faces; And the axis of needle is rotation twist setting.Though this pricker can improve feed increcement and alleviate pin trace, but, this pricker is used for containing single warp thread or when the thick non-woven material of the reinforcing layer of, weft yarns, axis due to this invention needle is that rotation twist is arranged, thus causes multiple orientation of needle cross section all to there will be hook thorn, therefore, when acupuncture, no matter how pricker needle orientation is arranged, and what the fiber in the yarn of its reinforcing layer all likely can be subject to briar tooth hooks up effect, thus causes damage.So this pricker is only applicable to the nonwoven material pinprick reinforcement not having reinforcing layer, be not suitable for the acupuncture processing containing the thick non-woven material of reinforcing layer.
Chinese patent ZL200520072134.0 " Nonwovens Needle that inclined heavy weave is used " discloses a kind of pricker for the production of felt.The needle cross section of this pricker is water chestnut-shaped, and the head end of needle point makes arc surfaced, can alleviate the damage to warp, weft yarn to a certain extent.This essence of an invention is that two seamed edges of leg-of-mutton conventional pricker accomplish arc-shaped by needle cross section, and another seamed edge maintains the original state and opens hook thorn.When the felt of reinforcing layer of work sheet one warp thread composition, the angular bisector this pricker being opened hook thorn seamed edge drift angle is arranged to be parallel to warp thread, then this pricker is risen to the bait the fiber stinging and would not hook in the warp thread of reinforcing layer, and namely also damaging warp threads is not powerful.But, when this pricker is used for the thick non-woven material pinprick reinforcement of the reinforcing layer of the woven fabric containing warp thread, weft yarns, the drawback of the pricker being similar to conventional triangular-section structure of pin leaf can't be overcome, namely can not avoid the damage warp thread of reinforcing layer or the brute force of weft yarn simultaneously.Therefore, this pricker is only applicable to the pinprick reinforcement of the felt of the reinforcing layer of single warp thread composition, is not suitable for the acupuncture processing of the thick non-woven material of the reinforcing layer containing warp, weft yarns.In addition, this pricker needle working position only has a seamed edge to have briar tooth, and its acupuncture entanglement efficiency is not high.
In sum, in order to overcome in conventional nonwoven pinprick reinforcement process the defect that the thick non-woven material brute force of the reinforcing layer of the woven fabric containing warp thread, weft yarns declines, research and development alleviate the novel pricker of reinforcing layer fibre damage in thick non-woven material, are still the focus of research at present.
Summary of the invention
The object of this invention is to provide a kind of effectively alleviate reinforcing layer fibre damage, for the pricker of thick non-woven material containing reinforcing layer, to solve the powerful impaired defect of the reinforcing layer of woven fabric of single warp thread contained by thick non-woven material that prior art exists or warp thread, weft yarns.Pricker of the present invention have employed oval column novel pin impeller structure, when acupuncture, the angle of the major diameter and warp thread guide direction that need set the cross section of the oval columnar shape basal of the needle of its pricker is 45 ° ~ 90 °, then make the major diameter side of the oval columnar shape basal of needle the warp thread of reinforcing layer or weft yarn can be strutted, hook is made to sting the warp thread or the weft yarn that not easily contact reinforcing layer, thus greatly alleviate the damage of reinforcing layer warp thread or weft yarn, make the strength retention of reinforcing layer in end article high.This pricker processing and fabricating is easy, is not only applicable to single thread layer, and is more suitable for the pinprick reinforcement of thick non-woven material of woven fabric reinforcing layer, and made product can be widely used in the fields such as high temperature resistance filtration material, highway subgrade geotextiles, sofa synthetic leather base cloth.
The technical scheme that technical solution problem of the present invention adopts:
A kind of pricker for the production of the thick non-woven material containing reinforcing layer, be length it is 76.2 ~ 88.9 millimeters, comprise by needle point, needle, the steel entity that pin waist and needle handle are connected successively, wherein, retaining the needle point of conventional pricker, on the basic structure of pin waist and needle handle and the basis of parameter, it is elliptoid matrix that its pricker needle is specially by cross section, be that 2 ~ 3 hooks that the ridge rib of isosceles triangle and the drift angle seamed edge of each ridge rib respectively have sting with matrix all-in-one-piece two cross sections, the length that these three parts form is the strip metal entity of 20 ~ 25 millimeters, the major diameter of the cross section of the oval columnar shape basal of described needle is 0.65 ~ 0.95 millimeter, minor axis is 0.32 ~ 0.50 millimeter, described ridge rib is positioned at the minor axis both sides of the oval columnar shape basal of needle, and the centerline axis parallel of the oval columnar shape basal of the drift angle seamed edge of its ridge rib and needle, the bottom of two sides of its each ridge rib adopts arc transition to be connected with the junction between oval columnar shape basal, the height of described ridge rib is 0.075 ~ 0.125 millimeter, the cross section corner angle of its ridge rib is 55 °, the centerline axis parallel of the elbow of needle handle is in the major diameter of the cross section of the oval columnar shape basal of needle.
Described needle point to be length the be cone of 2 millimeters, its end shape is bulb-shaped, and its diameter is 0.04 ~ 0.08 millimeter.
Described pin waist to be length the be cylinder of 20 ~ 25 millimeters, its diameter is 1.20 millimeters.
The cylinder that described needle handle is band elbow, length is 34.2 ~ 36.9 millimeters, its diameter is 1.83 millimeters, and the length of described elbow is 5 millimeters, and its angle of bend is 90 °.
Be connected as a body between the tail end of described needle point and the top of needle, and all adopt conical transition to be connected between the top of its pin waist and the tail end of needle, between the tail end of pin waist and the top of needle handle.
The hook thorn thorn larynx length of described hook thorn is 0.38 ~ 0.43 millimeter, it is 0.055 ~ 0.085 millimeter that its hook stings the recessed degree of depth, its hook thorn tilts and is highly 0.005 ~ 0.020 millimeter, its hook thorn incision angle is 21 °, and the distance that the setting hook nearest apart from the top of needle point stings the top of needle point is the first hook thorn distance, be specially 3.18 ~ 6.36 millimeters, distance between hook thorn adjacent on same ridge rib is 3.18 ~ 6.36 millimeters, distance between hook thorn adjacent on different ridge rib is 1.10 ~ 2.10 millimeters, and described hook thorn adopts mould pressing method shaping.
Described pricker, select the trade mark to be the high-quality bearing steel of GCr15, the cylindrical section of different-diameter cross section is formed through drawing procedure, needle handle elbow is formed by elbow operation, needle point is formed by sharpening operation, matrix and the ridge rib of the oval column of needle is formed through needle mold pressing procedure, briar tooth is formed again through hook thorn mold pressing procedure, then through heat treatment, quenching, tempering, any surface finish process is made, described needle mold pressing procedure, the matrix and the ridge rib that are specially the oval column of needle adopt twice mold pressing procedure shaping, wherein, first compression molding operation adopts being much of, bed die, on it, the working face of bed die is isosceles trapezoid groove, its specification is: face width is 2 millimeters, the degree of depth is 0.44 millimeter, bottom width is 1.6 millimeters, second compression molding operation also adopts being much of, bed die, on it, the working face of bed die combined by half elliptic groove isosceles triangle groove two parts with the bottom centre being positioned at half elliptic groove, the face width of its half elliptic groove, identical with the major diameter of the cross section of the oval columnar shape basal of needle, be specially 0.65 ~ 0.95 millimeter, the degree of depth of half elliptic groove, identical with the half of the minor axis of the cross section of the oval columnar shape basal of needle, be specially 0.16 ~ 0.25 millimeter, the groove depth of isosceles triangle groove is identical with the height of the ridge rib of needle, be specially 0.075 ~ 0.125 millimeter, the angle at the bottom land angle of its isosceles triangle groove, identical with the angle of the cross section drift angle of the ridge rib of needle, be 55 °.
Described pricker is when acupuncture contains the thick non-woven material of reinforcing layer, and the angle of the major diameter and warp thread guide direction that need set the cross section of the oval columnar shape basal of the needle of its pricker is 45 ° ~ 90 °.
This pricker is not only suitable for the pinprick reinforcement of thick non-woven material of the reinforcing layer of single warp thread composition, and is more suitable for the acupuncture processing of thick non-woven material of reinforcing layer of the woven fabric containing warp thread, weft yarns.
Compared with prior art, advantage of the present invention is as follows:
1. pricker of the present invention have employed cross section and is elliptoid matrix, is that 2 ~ 3 hooks that the ridge rib of isosceles triangle and the drift angle seamed edge of each ridge rib respectively have sting with matrix all-in-one-piece two cross sections, the novel pin impeller structure that this three part forms, during the acupuncture of this pricker, the angle of the major diameter and warp thread guide direction that need set the cross section of the oval columnar shape basal of the needle of its pricker is 45 ° ~ 90 °, then determine the subpoint of major diameter side on warp thread or weft direction of the cross section of the oval columnar shape basal of needle of this pricker, and ridge rib is risen to the bait between the subpoint on warp thread or weft direction of the summit stung and be there is certain distance, mean when pricker of the present invention is when puncturing fibre web, the warp thread of reinforcing layer or weft yarn can strut by the major diameter side of the oval columnar shape basal of its needle, the hook thorn of this pricker is just not easy the warp thread or the weft yarn that contact reinforcing layer, thus significantly reduce the damage of reinforcing layer warp thread or weft yarn.Therefore, pricker of the present invention can be used on the needing machine of the thick non-woven material of the reinforcing layer of the woven fabric containing single thread layer or warp thread, weft yarns.After testing, pricker acupuncture of the present invention is adopted to add man-hour, the strength retention of the reinforcing layer of its thick non-woven material is greater than 85%, and the strength retention of the reinforcing layer of the thick non-woven material adopting the pricker of traditional triangle tee section structure of pin leaf to process is only 50%, both compare, and reinforcing layer strength retention improves 72%.
2. the oval columnar shape basal of the needle of pricker of the present invention is in oval cambered surface symmetrical mutually, improves the intensity of its pricker needle, effectively prevents the phenomenon ruptured in pricker generation needle place, can alleviate again the frictionally damage to base cloth warp thread and weft yarn simultaneously.
3. this pricker manufacture processing and fabricating is easy, and the matrix of the oval column of needle and ridge rib adopt twice mold pressing procedure shaping, need not separately increase complicated processing operation.
4, this pricker Application Areas is extensive, and this pricker is not only suitable for the pinprick reinforcement of the thick non-woven material of the reinforcing layer of single warp thread composition, and is more suitable for the acupuncture processing of thick non-woven material of reinforcing layer of the woven fabric containing warp thread, weft yarns.The obtained thicker needled punched nonwoven material containing reinforcing layer has the advantages such as brute force is high, cost is low, long service life, and the present invention can be widely used in the acupuncture processing containing the thick non-woven material of reinforcing layer such as high temperature resistance filtration material, highway subgrade geotextiles, sofa synthetic leather base cloth.
Accompanying drawing explanation
Fig. 1 adopts by the present invention the monnolithic case structural representation of pricker;
In Fig. 1,1-needle point, 2-needle, 3-pin waist, 4-needle handle, 23-hook stings;
Fig. 2 is A-A profile in Fig. 1;
In Fig. 2,21-matrix, 22-ridge rib;
Fig. 3 adopts by the present invention the hook thorn schematic enlarged-scale view of pricker;
In Fig. 3,231-hook thorn incision angle, 232-hook thorn thorn larynx length, 233-hook stings the recessed degree of depth, and 234-hook thorn tilts height.
Detailed description of the invention
The present invention is further elaborated below in conjunction with specific embodiment and above-mentioned accompanying drawing.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various change and amendment to the present invention, and these equivalent form of values fall within present patent application appended claims limited range equally after the content of having read the present invention's instruction.
The overall structure of pricker of the present invention as shown in Figure 1 to Figure 3, a kind of pricker for the production of the thick non-woven material containing reinforcing layer, be length it is 76.2 ~ 88.9 millimeters, comprise by needle point 1, needle 2, the steel entity that pin waist 3 and needle handle 4 are connected successively, wherein, retaining the needle point 1 of conventional pricker, pin waist 3 is with in the basic structure of needle handle 4 and the basis of parameter, it is elliptoid matrix 21 that its pricker needle 2 is specially by cross section, be that 2 ~ 3 hooks that the ridge rib 22 of isosceles triangle and the drift angle seamed edge of each ridge rib 22 respectively have sting 23 with matrix 21 all-in-one-piece two cross sections, the length that these three parts form is the strip metal entity of 20 ~ 25 millimeters, the major diameter of the cross section of the oval columnar shape basal 21 of described needle 2 is 0.65 ~ 0.95 millimeter, minor axis is 0.32 ~ 0.50 millimeter, described ridge rib 22 is positioned at the minor axis both sides of the oval columnar shape basal 21 of needle 2, and the centerline axis parallel of the oval columnar shape basal 21 of the drift angle seamed edge of its ridge rib 22 and needle 2, the bottom of two sides of its each ridge rib 22 adopts arc transition to be connected with the junction between oval columnar shape basal 21, the height of described ridge rib 22 is 0.075 ~ 0.125 millimeter, the cross section corner angle of its ridge rib 22 is 55 °, the centerline axis parallel of the elbow of needle handle 4 is in the major diameter of the cross section of the oval columnar shape basal 21 of needle 2.
Described needle point 1 to be length the be cone of 2 millimeters, its end shape is bulb-shaped, and its diameter is 0.04 ~ 0.08 millimeter.
Described pin waist 3 to be length the be cylinder of 20 ~ 25 millimeters, its diameter is 1.20 millimeters.
The cylinder that described needle handle 4 is band elbows, length is 34.2 ~ 36.9 millimeters, its diameter is 1.83 millimeters, and the length of described elbow is 5 millimeters, and its angle of bend is 90 °.
Be connected as a body between the tail end of described needle point 1 and the top of needle 2, and all adopt conical transition to be connected between the top of its pin waist 3 and the tail end of needle 2, between the tail end of pin waist 3 and the top of needle handle 4.
The hook thorn thorn larynx length 232 of described hook thorn 23 is 0.38 ~ 0.43 millimeter, it is 0.055 ~ 0.085 millimeter that its hook stings the recessed degree of depth 233, it is 0.005 ~ 0.020 millimeter that its hook thorn tilts height 234, its hook thorn incision angle 231 is 21 °, and the setting hook thorn 23 nearest apart from the top of needle point 1 is that the first hook stings 23 distances to the distance on the top of needle point 1, be specially 3.18 ~ 6.36 millimeters, distance between hook thorn 23 adjacent on same ridge rib 22 is 3.18 ~ 6.36 millimeters, distance between hook thorn 23 adjacent on different ridge rib 22 is 1.10 ~ 2.10 millimeters, described hook thorn 23 adopts mould pressing method shaping.
Described pricker, select the trade mark to be the high-quality bearing steel of GCr15, the cylindrical section of different-diameter cross section is formed through drawing procedure, needle handle 4 elbow is formed by elbow operation, needle point 1 is formed by sharpening operation, form matrix 21 and the ridge rib 22 of the oval column of needle 2 through needle 2 mold pressing procedure, then sting 23 mold pressing procedures formation hook thorns 23 through hook, then make through heat treatment, quenching, tempering, any surface finish process.Described needle 2 mold pressing procedure, the matrix 21 and the ridge rib 22 that are specially the oval column of needle 2 adopt twice mold pressing procedure shaping, wherein, first compression molding operation adopts symmetrical upper and lower mould, the working face of its upper and lower mould is isosceles trapezoid groove, its specification is: face width is 2 millimeters, and the degree of depth is 0.44 millimeter, and bottom width is 1.6 millimeters, second compression molding operation also adopts being much of, bed die, on it, the working face of bed die combined by half elliptic groove isosceles triangle groove two parts with the bottom centre being positioned at half elliptic groove, the face width of its half elliptic groove, identical with the major diameter of the cross section of the oval columnar shape basal of needle 2 21, be specially 0.65 ~ 0.95 millimeter, the degree of depth of half elliptic groove, identical with the half of the minor axis of the cross section of the oval columnar shape basal of needle 2 21, be specially 0.16 ~ 0.25 millimeter, the groove depth of isosceles triangle groove is identical with the height of the ridge rib 22 of needle 2, be specially 0.075 ~ 0.125 millimeter, the angle at the bottom land angle of its isosceles triangle groove, identical with the angle of the cross section drift angle of the ridge rib 22 of needle 2, be 55 °.
Described pricker is when acupuncture contains the thick non-woven material of reinforcing layer, and the angle of the major diameter and warp thread guide direction that need set the cross section of the oval columnar shape basal 21 of the needle 2 of its pricker is 45 ° ~ 90 °.
This pricker is not only suitable for the pinprick reinforcement of thick non-woven material of the reinforcing layer of single warp thread composition, and is more suitable for the acupuncture processing of thick non-woven material of reinforcing layer of the woven fabric containing warp thread, weft yarns.
Embodiment 1
Adopt pricker of the present invention to prepare fire resistant filter material base substrate, be 2.2 dawn by upper and lower layer fineness, polytetrafluoroethylene fibre that length be polyphenylene sulfide fibre and 1.5 dawn, the length of 51 millimeters is 48 millimeters be by weight percentage 70%: 30% phase mixed, surface density is 200 grams/meter
2fiber web, and intermediate layer adopts fineness was 2.2 dawn, length is 48 millimeters polyphenylene sulfide fibre spinning and weaving, through close be 45/10 centimetres, filling density is 45/10 centimetres, surface density is 130 grams/meter
2, warp-wise ultimate strength is 1295.6 newton, the polyphenylene sulfide fibre reinforcing layer debatching respectively of broadwise ultimate strength 1587.4 newton, and by after the order lamination of upper strata polyphenylene sulfide fibre and polytetrafluoroethylene fibre phase combined filament net/intermediate layer polyphenylene sulfide fibre reinforcing layer/lower floor's polyphenylene sulfide fibre and polytetrafluoroethylene fibre phase combined filament net, the main acupuncture operation of the pricker of oval column novel pin leaf 2 structure of the present invention and the acupuncture operation processing of having a shave of 1 road routine is have employed through 1 ~ 6 road, the base substrate of the acupuncture high temperature resistance filtration material that obtained polyphenylene sulfide fibre mixes mutually with polytetrafluoroethylene fibre, after testing, its surface density is 526 grams/meter
2, thickness is 3.0 millimeters, and its warp direction stretching ultimate strength is 1230.8 newton, and its broadwise tension failure brute force is 1265.9 newton, and as calculated, the strength retention of its reinforcing layer is 86.6%.The structural parameters of the pricker of the present invention that 1st ~ 6 main acupuncture in road operations adopt are as shown in table 1, and 1st ~ 6 main Needle-Punched Process Parameters in road are as shown in table 2.
Embodiment 2
Adopt pricker of the present invention to prepare highway subgrade geotextiles, be 2.2 dawn by upper and lower layer fineness, length be the polyester fiber of 51 millimeters was 4.8 dawn with fineness, length be 63 millimeters polyester fiber by weight percentage 40%: 60% phase mixed, surface density is 150 grams/meter
2fiber web, and intermediate layer adopts fineness was 3.3 dawn, length is 51 millimeters polyester fiber spinning and weaving, through close be 40/10 centimetres, filling density is 45/10 centimetres, surface density is 130 grams/meter
2, warp-wise ultimate strength is the Reinforced by Polyester Fiber layer respectively debatching of 1037.2 newton, broadwise ultimate strength 1162.7 newton, and by after the order lamination of upper strata polyester fiber net/intermediate layer Reinforced by Polyester Fiber layer/lower floor's polyester fiber net, the main acupuncture operation processing of the pricker of oval column novel pin leaf 2 structure of the present invention is have employed through 1 ~ 5 road, obtained polyester fiber acupuncture highway subgrade geotextiles, after testing, its surface density is 420 grams/meter
2, thickness is 2.6 millimeters, and its warp direction stretching ultimate strength is 995.7 newton, and its broadwise tension failure brute force is 924.8 newton, and as calculated, the strength retention of its reinforcing layer is 87.3%.The structural parameters of the pricker of the present invention that 1st ~ 5 main acupuncture in road operations adopt are as shown in table 3, and 1st ~ 5 main Needle-Punched Process Parameters in road are as shown in table 4.
Embodiment 3
Adopt pricker of the present invention to prepare high-tensile conveyer belt base substrate, be 6 dawn by fineness, length be 63 millimeters, surface density is 300 grams/meter
2upper and lower layer polyamide 6 fiber web, and intermediate layer adopts ultimate strength to be the polyamide 6 twine of 90.3 newton by warp-wise arranging density to be the reinforcing layer respectively debatchings of 70/10 centimetres arrangements, and by after the order lamination of upper strata daiamid-6 fiber net/intermediate layer polyamide 6 twine reinforcing layer/lower floor's daiamid-6 fiber net, the main acupuncture operation processing of the pricker of oval column novel pin leaf 2 structure of the present invention is have employed through 1 ~ 4 road, the base substrate of obtained high-tensile conveyer belt, after testing, its surface density is 1024 grams/meter
2, thickness is 3.2 millimeters, and its warp direction stretching ultimate strength is 2824.5 newton, and as calculated, the strength retention of twine is 89.4%.The structural parameters of the pricker of the present invention that 1st ~ 4 main acupuncture in road operations adopt are as shown in table 5, and 1st ~ 4 main Needle-Punched Process Parameters in road are as shown in table 6.
Claims (8)
1. the pricker for the production of the thick non-woven material containing reinforcing layer, it is characterized in that: this pricker is length is 76.2 ~ 88.9 millimeters, comprise by needle point (1), needle (2), the steel entity that pin waist (3) is connected successively with needle handle (4), wherein, retaining the needle point (1) of conventional pricker, pin waist (3) is with in the basic structure of needle handle (4) and the basis of parameter, it is elliptoid matrix (21) that its pricker needle (2) is specially by cross section, be that 2 ~ 3 hooks that the ridge rib (22) of isosceles triangle and the drift angle seamed edge of each ridge rib (22) respectively have sting (23) with matrix (21) all-in-one-piece two cross sections, the length that these three parts form is the strip metal entity of 20 ~ 25 millimeters, the major diameter of the cross section of the oval columnar shape basal (21) of described needle (2) is 0.65 ~ 0.95 millimeter, minor axis is 0.32 ~ 0.50 millimeter, described ridge rib (22) is positioned at the minor axis both sides of the oval columnar shape basal (21) of needle (2), and the centerline axis parallel of the oval columnar shape basal (21) of the drift angle seamed edge of its ridge rib (22) and needle (2), the bottom of two sides of its each ridge rib (22) adopts arc transition to be connected with the junction between oval columnar shape basal (21), the height of described ridge rib (22) is 0.075 ~ 0.125 millimeter, the cross section corner angle of its ridge rib (22) is 55 °, the centerline axis parallel of the elbow of needle handle (4) is in the major diameter of the cross section of needle (2) oval columnar shape basal (21).
2. as claimed in claim 1 for the production of the pricker of the thick non-woven material containing reinforcing layer, it is characterized in that: described needle point (1) to be length the be cone of 2 millimeters, its end shape is bulb-shaped, and its diameter is 0.04 ~ 0.08 millimeter.
3. as claimed in claim 1 for the production of the pricker of the thick non-woven material containing reinforcing layer, it is characterized in that: described pin waist (3) to be length the be cylinder of 20 ~ 25 millimeters, its diameter is 1.20 millimeters.
4. as claimed in claim 1 for the production of the pricker of the thick non-woven material containing reinforcing layer, it is characterized in that: the cylinder that described needle handle (4) is band elbow, length is 34.2 ~ 36.9 millimeters, its diameter is 1.83 millimeters, the length of described elbow is 5 millimeters, and its angle of bend is 90 °.
5. as claimed in claim 1 for the production of the pricker of the thick non-woven material containing reinforcing layer, it is characterized in that: be connected as a body between the tail end of described needle point (1) and the top of needle (2), and all adopt conical transition to be connected between the top of its pin waist (3) and the tail end of needle (2), between the tail end of pin waist (3) and the top of needle handle (4).
6. as claimed in claim 1 for the production of the pricker of the thick non-woven material containing reinforcing layer, it is characterized in that: hook thorn thorn larynx length (232) of described hook thorn (23) is 0.38 ~ 0.43 millimeter, it is 0.055 ~ 0.085 millimeter that its hook stings the recessed degree of depth (233), it is 0.005 ~ 0.020 millimeter that its hook thorn tilts height (234), its hook thorn incision angle (231) is 21 °, and nearest hook thorn (23) in the top of setting apart from needle point (1) is first hook thorn (23) distance to the distance on the top of needle point (1), be specially 3.18 ~ 6.36 millimeters, distance between upper adjacent hook thorn (23) of same ridge rib (22) is 3.18 ~ 6.36 millimeters, distance between upper adjacent hook thorn (23) of different ridge rib (22) is 1.10 ~ 2.10 millimeters, described hook thorn (23) adopts mould pressing method shaping.
7. as claimed in claim 1 for the production of the pricker of the thick non-woven material containing reinforcing layer, select the trade mark to be the high-quality bearing steel of GCr15, the cylindrical section of different-diameter cross section is formed through drawing procedure, needle handle (4) elbow is formed by elbow operation, needle point (1) is formed by sharpening operation, matrix (21) and the ridge rib (22) of the oval column of needle (2) is formed through needle (2) mold pressing procedure, hook thorn (23) is formed again through hook thorn (23) mold pressing procedure, then through heat treatment, quenching, tempering, any surface finish process is made, it is characterized in that: described needle (2) mold pressing procedure, the matrix (21) and the ridge rib (22) that are specially needle (2) oval column adopt twice mold pressing procedure shaping, wherein, first compression molding operation adopts being much of, bed die, on it, the working face of bed die is isosceles trapezoid groove, its specification is: face width is 2 millimeters, the degree of depth is 0.44 millimeter, bottom width is 1.6 millimeters, second compression molding operation also adopts being much of, bed die, on it, the working face of bed die combines by half elliptic groove isosceles triangle groove two parts with the bottom centre being positioned at half elliptic groove, the face width of its half elliptic groove, identical with the major diameter of the cross section of needle (2) oval columnar shape basal (21), be specially 0.65 ~ 0.95 millimeter, the degree of depth of half elliptic groove, identical with the half of the minor axis of the cross section of needle (2) oval columnar shape basal (21), be specially 0.16 ~ 0.25 millimeter, the groove depth of isosceles triangle groove is identical with the height of the ridge rib (22) of needle (2), be specially 0.075 ~ 0.125 millimeter, the angle at the bottom land angle of its isosceles triangle groove, identical with the angle of the cross section drift angle of the ridge rib (22) of needle (2), be 55 °.
8. as claimed in claim 1 for the production of the pricker of the thick non-woven material containing reinforcing layer, it is characterized in that: described pricker is when acupuncture contains the thick non-woven material of reinforcing layer, and the angle of the major diameter and warp thread guide direction that need set the cross section of the oval columnar shape basal (21) of the needle (2) of its pricker is 45 ° ~ 90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210340762.7A CN102797116B (en) | 2012-09-15 | 2012-09-15 | Felting needle for producing thick non-woven material containing reinforced layer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210340762.7A CN102797116B (en) | 2012-09-15 | 2012-09-15 | Felting needle for producing thick non-woven material containing reinforced layer |
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| CN102797116A CN102797116A (en) | 2012-11-28 |
| CN102797116B true CN102797116B (en) | 2015-03-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104790125A (en) * | 2015-04-24 | 2015-07-22 | 寿光市发达布业有限公司 | Felting needle for glass fiber polyester spunbond non-woven fabric |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108547061B (en) * | 2018-03-29 | 2020-02-11 | 武汉纺织大学 | Preparation method of woven and non-woven combined cloth |
| CN109572123A (en) * | 2018-11-16 | 2019-04-05 | 江苏恒生环保科技有限公司 | Woven knitting composite construction based high-temp-resistant environmental protection filtrate of one kind and preparation method thereof |
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|---|---|---|---|---|
| CA732806A (en) * | 1966-04-26 | Cephas B. Sitterson, Jr. | Felting needle and method of making needled felts | |
| US3464097A (en) * | 1967-06-01 | 1969-09-02 | Singer Co | Felting needle |
| US3479708A (en) * | 1968-05-15 | 1969-11-25 | Edson P Foster | Felting needle |
| DE19521796C1 (en) * | 1995-06-16 | 1996-07-18 | Singer Spezialnadelfab | Felting needle, causing no damage to woven support of fleece |
| CN2797400Y (en) * | 2005-05-20 | 2006-07-19 | 台州宇星制针有限公司 | Non-woven needle for weaving thick fabric |
| CN200952070Y (en) * | 2006-07-04 | 2007-09-26 | 台州市幼龙制针有限公司 | Convex circular tooth non-woven needle |
| EP2218812B1 (en) * | 2009-02-12 | 2011-03-16 | Groz-Beckert KG | Needle for a textile machine |
| EP2218814B1 (en) * | 2009-02-12 | 2011-05-04 | Groz-Beckert KG | Needle for a textile machine |
| CN201506901U (en) * | 2009-09-03 | 2010-06-16 | 台州宇星制针有限公司 | Star fracture resistant nonwoven needle |
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2012
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104790125A (en) * | 2015-04-24 | 2015-07-22 | 寿光市发达布业有限公司 | Felting needle for glass fiber polyester spunbond non-woven fabric |
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Address after: 224400, Jiangsu County, Funing Province town environmental protection filter media Industrial Park No. 66 Applicant after: JIANGSU DONGFANG FILERS BAG CO., LTD. Applicant after: Donghua University Applicant after: Shanghai Fengwei Needle Manufacturing Co., Ltd. Address before: 224400 Jiangsu province Yancheng City Funing Fucheng Industrial Park A District No. 4 Applicant before: Jiangsu Dongfang Filters Bag Co., Ltd. Applicant before: Donghua University Applicant before: Shanghai Fengwei Needle Manufacturing Co., Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: JIANGSU DONGFANG FILTERS BAG CO., LTD. TO: JIANGSU ORIENTAL FILTER BAG CO., LTD. |
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