CN100335249C - Device and method of liquid-permeable perforation of a nonwoven - Google Patents

Device and method of liquid-permeable perforation of a nonwoven Download PDF

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Publication number
CN100335249C
CN100335249C CNB038168251A CN03816825A CN100335249C CN 100335249 C CN100335249 C CN 100335249C CN B038168251 A CNB038168251 A CN B038168251A CN 03816825 A CN03816825 A CN 03816825A CN 100335249 C CN100335249 C CN 100335249C
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CN
China
Prior art keywords
roller
nonwoven
roll calender
felt
felt material
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Expired - Fee Related
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CNB038168251A
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Chinese (zh)
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CN1668428A (en
Inventor
M·穆特
R·佐德曼
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Corovin GmbH
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Corovin GmbH
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/24—Perforating by needles or pins
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/04—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres having existing or potential cohesive properties, e.g. natural fibres, prestretched or fibrillated artificial fibres
    • D04H1/08—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres having existing or potential cohesive properties, e.g. natural fibres, prestretched or fibrillated artificial fibres and hardened by felting; Felts or felted products
    • D04H1/10—Felts made from mixtures of fibres
    • D04H1/12—Felts made from mixtures of fibres and incorporating artificial organic fibres
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/559—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving the fibres being within layered webs
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/56—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving in association with fibre formation, e.g. immediately following extrusion of staple fibres
    • 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/005—Synthetic yarns or filaments
    • D04H3/007—Addition polymers
    • 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/14—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding
    • 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/16—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C27/00—Compound processes or apparatus, for finishing or dressing textile fabrics, not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F2210/00—Perforating, punching, cutting-out, stamping-out, severing by means other than cutting of specific products
    • B26F2210/12—Perforating, punching, cutting-out, stamping-out, severing by means other than cutting of specific products of fabrics
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Making Paper Articles (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

The present invention relates to a method for the manufacture of a perforated nonwoven (2), whereby perforation means engage into the nonwoven. The perforation means are arranged on a first roller (8). The perforation means engage through the nonwoven into a surface (15) of a second roller (10). The perforation means displace fibres of the nonwoven, whereby the perforation means engage in a material on the second roller (10), such that said means can displace the material when they engage. In addition, a corresponding device and corresponding materials are provided for.

Description

Give the apparatus and method of nonwoven fluid permeable perforation
Technical field
Manufacture method, the punching machine, particularly pricker that the present invention relates to a kind of perforated nonwoven are engaged in this nonwoven.These prickers are positioned on first roller, and the nonwoven in the second roller surface is passed in these pricker engagements.In addition, provide a roll calender, be used to the nonwoven that punctures, this roll calender has first roller and second roller.First roller has punching machine.Also described the nonwoven cloth material through perforation, it is with method of the present invention and/or roll calender manufacturing.
Background technology
EP0598970A1 has described a kind of apparatus and method of producing the perforation fibre web, and this fibre web for example is a membrane material.In this method, fibre web advances between two counterrotating cylinders, and first cylinder wherein is smooth, and the second tin roller that is provided has projection.Second tin roller is with the peripheral speed rotation bigger than smooth roll circumference speed.Smooth cylinder comprises: the elastically deformable overcover that a kind of elastomeric material or textile fabric are made.The different circumferential speed of these cylinders produces the slippage behavior, and this slippage behavior forms the hole on fibre web, and has part to break away from the fibre bundle of fibrous material around the hole.These fibre bundles extend on the direction of membrane material by two cylinders.These fibre bundle functions are, make liquid penetrate into opposite side from a side of film, and prevent that liquid from refluxing in the opposite direction.
EP0214608A2 has described the perforation spun-bonded non-woven fabrics of polypropylene fibre and bicomponent fibre.In this respect, it discloses a kind of method for punching of nonwoven, and one of them drive roll has been installed many prickers, and it contacts with a pair roller.Nonwoven is punctured, and the perforation pricker enters in the hole of pair roller, thus and this nonwoven of boring a hole.The diameter of the perforation of nonwoven is 0.015 to 0.125 inch scope.But whole surface only 20% to 55% is perforated.
WO 9967454 discloses a kind of method that is had the nonwoven cloth material of the thorn pore structure that spreads all over the nonwoven cross section by the fiber manufacturing.The puncturing hole structure is made by following steps, and fiber lay down is formed fleece on the screen cloth band, this fleece of puncture on punch block mechanism subsequently, and it is converted to nonwoven in adhesive unit.For this reason, puncture mechanism comprises two elements.An element has the fibroreticulate spike of many sensings.Second element has some openings, and the spike of first element partly gos deep in this opening, and fleece by the time with fibroreticulate fibrous zero damage move, thereby form cell structure.These openings of second element are connected on overvoltage and the vacuum source, and it can suck the fiber that is in the open area or blow out in the described opening.The cell structure diameter of the nonwoven of Sheng Chaning is that 0.5mm to 5mm and every square centimeter have 40 to 120 bounding points thus, and adhesive surface accounts for 10% to 40% of nonwoven cloth material surface.
WO03004229 discloses a kind of according to document Fig. 1 and Fig. 2 and the 11st and 12 page of supatex fabric punching machine that accompanying drawing is described.This device comprises a kind of perforating roller 4 and pair roller 5 of barbed pin.Pair roller 5 comprises coating 14, preferred a kind of rubber coatings.Can the puncture coating of pair roller of the pricker of perforating roller preferably arrives the degree of depth of 2.5mm to 6mm.Similarly, coating 14 itself can comprise with pricker 11 and is the eyelet in the face of relation.
WO 03004259 discloses a kind of punching machine, wherein second roller of first roller of initiating structure engagement passive structure, and the nonwoven that punctures in this process.
For example, be shown in the pair roller 3 preferred openings 14 that extend in the pair roller 3 that comprise in its surface of document Fig. 1.Their size, opening 14 roughly are equivalent to the projection 5 of perforating roller 2.Opening can be circular hole, the strip hole, but or be groove owing to for example on pair roller 3 surfaces, forming burr.Interaction by perforating roller 2 and pair roller 3 forms thermoplastic structure 7.
The calender that all has a porcupine roller and a perforate droller has been described in European patent application EP 1048419A1 and European patent application EP 1046479Al.
The pricker of this porcupine roller meshes into this perforate droller accordingly along the opposed perforate of diameter, thereby and the material that is guided by the gap that formed by perforate droller and porcupine roller is bored a hole.Can perforated material can be plastic foil, paper or non-woven material.The latter can reach several millimeters thickness.
Summary of the invention
The purpose of this invention is to provide a kind of method and a kind of device, it is low-level that it will make the technical expense that is used for the production perforated nonwoven keep, but allow high-speed production simultaneously.
This purpose is by perforated nonwoven cloth production process of the present invention and by being used for the roll calender realization to the nonwoven perforation.
According to a kind of method that is used for the production perforated nonwoven of the present invention, it proposes punching machine (being specially pricker) and is engaged in this nonwoven.These prickers are positioned on the roller, and this nonwoven is passed in these pricker engagements, enters the surface of second roller.These prickers move the fiber of this nonwoven, and these prickers are engaged in certain material.Select this material to make removable this material of these prickers.Particularly, these prickers can move this material according to the mode that shows contour shape in this material.These prickers preferably can repeatedly be engaged in these outlines.These profiles particularly at first form by the engagement of punching machine.These punching machines preferably are engaged in the fibrous material at least in part, and it is preferably formed at least a portion surface on the second roller surface.Especially a kind of felt material of this removable material.
According to a kind of expression of refinement, these punching machines are prickers.These prickers can have different geometries and cross section.For example: these prickers can be sharp-pointed or blunt nosed, can have undercut, and can be cylinder or conical.Geometry and cross section can change on the whole length of pricker.Except that pricker, also for example can use: pyramid, short column, especially conical short column, mushroom-shaped solid, rectangle/oval solid, the round end at least in part of taking the lead.These punching machines can be by solid milling, etching, or even corrodes and form.These punching machines also can be combined subsequently, for example gummed, clamp or the next to the shin and/or friction mode with another kind.
These punching machines, particularly pricker preferably are engaged in the felt material, and this felt material forms the surface of second roller.In this way, because this felt material is positioned on second roller, so this felt material forms the counter pair of these prickers of diametrically opposite, it can preferably have a kind of elastic behavior, but still has certain rigidity.This felt material preferably can make the nonwoven on second roller stable, so that this roller can horizontal mobile non-woven fabrics fiber when it slips in this nonwoven.
According to an embodiment, this felt material that is used on second roller is positioned to when being subjected to mechanical tension on second roller.This especially provides and the pricker and/or the first roller relevant a certain felt material intensity of exerting pressure.Therefore the felt fiber can also have certain elastic behavior.
According to an embodiment of this method, first roller, it has pricker, be driven, and second roller that has felt material on the surface is not driven directly.On the contrary, the motion of first roller is guaranteed that pricker that second roller is meshed in the nonwoven cloth material carries and is moved ahead.By this way, first roller and second roller move synchronously with one another.Felt material is preferably selected in mode so, makes when pricker is engaged in the felt material, always takes place on the roughly the same point.Therefore form perforate in felt material, pricker always is engaged to wherein.By this way, when using felt material on second roller, its wearing and tearing are restricted.
According to a further embodiment, heat these prickers.Preferably be heated to a certain temperature, this temperature is lower than the melt temperature of nonwoven or the decomposition temperature of this felt material.For example: the surface temperature of a certain pricker can be and makes the fiber fusing of nonwoven and/or softening but do not make fibre structure thereby ruined temperature.The detailed-oriented expression of this method proposes, and this felt material is applied on second roller as shrinkage hose.This shrinkage hose is preferably seamless.Second roller preferably has the metal surface.May be smooth or have a kind of ripple in its surface.This ripple for example embodies as spiral or the groove form parallel with their axle.Surface that also might second roller has a pitch left side tiltedly or right oblique screw-like channels.The metal surface and this felt material that preferably connect second roller especially make this flexible pipe apply a pressure on the surface of this second roller.In addition, also can between this felt material and this metal surface, apply a kind of adhesive.This adhesive preferably can dissolve once more via for example alcohol or other analog effect.In this way, can remove being connected between this membrane material and this second roller once more.If this felt material excessive wear is then replaced it with new felt material.The remainder of second roller may not be substituted fully.
A kind of improvement, it also represents a kind of independently design, proposes felt material is arranged on a carrier.Then, the felt material that has this carrier then is applied on the roller, for example is enclosed within on the roller.This carrier is preferred a kind of changeover bobbin (changeover bobbin).This changeover bobbin preferably is pushed onto the roller.This changeover bobbin and this roller connect via typical connected mode, and it especially rubs and/or (form-fiting) next to the shin.For example: can use the tongue and groove joint assembly system, be threaded or some similar connections.Preferably felt material is arranged at this carrier replaceably, thereby this carrier is what can use once again.This carrier is specially changeover bobbin, can change felt material rapidly.Therefore be reduced to minimum the down time of this calender.For example, connect felt material and this carrier as described above, this is described in and relevant felt material is connected in the middle of the literal of this roller.Preferably make this changeover bobbin with a kind of plastic material.Only a shrinkage hose must be pulled at and be enclosed within on this changeover bobbin.These rollers of calender can remain unchanged.By using multiple changeover bobbin, even can overcome shorter felt material service life fast.By ample supply, the replacing of changeover bobbin can be carried out from the replacing on the unwinder simultaneously with roller.
Further and independently conceive according to the present invention, this roll calender is according to making pair roller design in the mode that a side can reach, and the mode that a this side can reach makes that for example changeover bobbin can be replaced.This preferably carries out when opposite side keeps its position, for example remains on the bearing.If the weight of pair roller must be compensated, can on calender, provide a supporter for this purpose.This supporter is carrying the weight of pair roller, and this weight can produce because of the free side of unclamping pair roller.Supporter preferably can partly move at least, makes changeover bobbin that enough protections be arranged when extracting and loading onto.The part of supporter especially can moving axially along pair roller.According to further design, pair roller is supported on the free side by attachable weight receiver.Weight receiver for example screw thread is installed, and extending axially along pair roller.The weight receiver is especially wanted long enough, makes sleeve to be put and to take off.
One further and independently in the design, this calender has the roll change device of pair roller.If for example first felt material weares and teares to such an extent that must change, then remove first pair roller, and calender second pair roller with second felt material is contacted with perforating roller with first felt material from perforating roller.At this moment first pair roller can for example be removed, so that change first felt material.For example, in German patent DE 100 05 306 C1, disclose the roll change device of calender, the whole disclosure of the document has been incorporated among the present invention as a reference, especially about calender, the more operation of roll change and roller.
For example, if with the felt Hose Jacket at clean second roller surface or clean carrier surface, and make it drenched with the water that is heated to about 60-80 ℃ subsequently, then during use felt flexible pipe, can obtain good pressure.In this case, Xiang Shuizhong adds extra wetting agent may be favourable, and this wetting agent can for example be a washing agent.In this case, quickened the shrinkage of felt flexible pipe.Subsequently, with this felt flexible pipe of cold water quenching and on second roller with for example 30-40 ℃ carry out drying.In this case, fully connected between felt material and second roller and/or the carrier, when pin is punctured in the felt material, between the felt material and second roller, do not had slippage.
Itself also can be subject to processing the surface of felt material.Necessary is that for example, if felt material surface has projection or appearances of wear, this can counteract.Also have following possibility, make surperficial roughening or so that the mode that surface roughness reduces process.The latter can for example adopt outstanding felt material fibers slightly singed and carry out, and removes with for example brush subsequently.
The preferred felt material of wool that use as fibrous raw material.But some is used, and also is feasible with other fibrous material as felt material.These can for example be flax or cotton, viscose glue, polyamide, polyacrylonitrile, polyester, polypropylene, aromatic polyamides, polytetrafluoroethylene (PTFE), polyamide or polyphenylene sulfide.But the long-term heat resistance of wool is about 100 ℃, under higher pricker temperature, uses for example polyamide, polyester or aromatic polyamide fibers.When having the hardness of F group according to DIN 61 200, used shrinkage hose produces special durability.Felt material preferably has between 0.32 and 0.48g/cm 3Between gross weight density (gross density).Felt material preferably has the felt thickness greater than 5mm, particularly for example greater than 8mm, and preferred 10mm or higher, the felt thickness of 15mm at most.The preferred felt flexible pipe that uses, it has the wool felt according to F2, the about 10mm of wall thickness, and density is 0.36g/cm 3
Adopt felt flexible pipe and/or felt material to have further advantage, seldom need to consider the temperature expansion of the pricker and/or first roller.Especially, if first roller is carried along second roller, the meshing point in pricker and the felt material is synchronous automatically.In addition, an embodiment proposes, and the material of second roller is lower than the felt material elasticity that forms the second roller surface.Preferred second roller is by metal, especially steel alloy production.Another embodiment proposes, and second roller strap has plastics, and preferably mainly by the plastics manufacturing.In addition, second roller also can be the roller of hollow.
Gap between first and second rollers is preferably set in such a way, make the pricker that is punctured in the nonwoven move the fiber of nonwoven, and be pressed against on the felt material, fiber be compressed and nonwoven in opening stabilized.Depend on roller and/or be conducted through speed, applied pressure, temperature and other parameter of the nonwoven in the middle of their, exist opening can present for example funnel shaped may.In addition, on second roller, use felt material to make and use the needle geometries that differs widely.These shapes can be wedge angle, conical, blunt nosed or other shape.Their cross section can be rectangle, star, circle, semicircle, pattern-like or even all these mixing.
According to a kind of refinement, the shape of these prickers is especially made and is made that fiber to small part was moved out nonwoven when these prickers meshed.Under this situation, fiber forms a kind of structure corresponding to needle geometries.This structure optimization nonwoven by behind first and second rollers from the nonwoven surface projection.Another embodiment of this method proposes, and when pricker was punctured in the felt material, fiber was also pulled in the felt material to small part.Because nonwoven is peeled off from second roller subsequently, this texture that can cause nonwoven surface to exist becomes more obvious.For example, by sticking in the felt, make fiber be drawn out till being connected of felt and fiber disconnects.
According to further design of the present invention, a kind of roll calender of perforated nonwoven is provided, this calender has first roller and second roller.First roller has the punching machine that stretches out from the first roller surface.First roller and second roller form a gap, and the nonwoven of preparing perforation is guided through this gap.As the surface, set so that punching machine meshes into the mode of felt material by the gap between first and second rollers with felt material for second roller.A kind of refinement proposes, and the gap between first and second rollers is variable.Particularly, it can be so that used pricker not exclusively be engaged in felt material and the nonwoven that passes through of guiding, and the mode that only reaches a certain scope is set.
Porcupine roller preferably has circular needle shape.The diameter of pricker is preferably 1 and about value between the 3mm.The area of pricker is preferably between 1.5 and 5mm 2Between, the density of pricker is preferably between 8 and 25/cm 2Between, the pricker area ratio is preferably between 30% to 70%.What thorn was needled into felt material thrusts the degree of depth preferably between between the 2mm to 6mm.Gap between first and second rollers is preferred so that pricker not exclusively penetrates in the felt material and nonwoven in mode set.Further embodiment proposes, and the gap has the guiding of making and is compressed in perforation by the nonwoven between them.For example, nonwoven can experience for the pressure of this purpose and/or temperature, and it is applied on the nonwoven by first roller or its parts.
List the data of exemplary porcupine roller in the following table, adopted these data to puncture on second roller and the interactional various nonwoven of felt material.
Pricker shape in the top view Needle diameter [mm] Pricker area [mm 2] Pricker number [radical/cm 2] The pricker area is than [%]
Circular 1.95 2.987 15.36 45.86
The exemplary measurement data that coats the definite different experiments of pair roller with porcupine roller and felt is listed in the table below:
Feed A A A B B B B
Area weight [g/mm 2] 30 30 30 30 30 40 40
Thorn is needled into the degree of depth [mm] 4.5 4.5 5.0 4.5 5.0 4.5 5.0
Perforation hole area [mm 2] 0.63 0.68 1.09 0.73 0.84 0.91 0.95
Aperture area [%] 9.7 10.6 18.3 12.3 14.2 15.1 15.7
A: polypropylene spun-bonded non-woven fabrics
B: polypropylene spun-bonded non-woven fabrics+polyethylene/polypropylene bicomponent spunbond nonwoven
In cited experiment, the speed of screen cloth band is 95 meters/minute.
Preferably make punching machine in the following manner, particularly pricker plays a role, and makes nonwoven perforation and possess liquid permeable.Demonstrate, use pre-bonding nonwoven to be particularly suitable under this situation as employed nonwoven.The preferred single-layer nonwoven of using.For example, adopt a kind of spun-bonded non-woven fabrics of mainly being made by polypropylene, it is an individual layer.This spun-bonded non-woven fabrics preferred weight is between 20g/m 2And 40g/m 2Between.Preferred basis weight is about 30g/m 2Pre-bonded nonwoven for example has the bond area of 14.49% heat bonding form.This nonwoven preferably has the bond area between 10% and about 60%.Except heat bonding, this nonwoven also can obtain its stability and intensity by other adhesive bonding method, and for example by water thorn bonding, adhesive, adhesive fiber, ultra-sonic welded or the like method obtains.The hole dimension that produces for example is hole area 1.09mm 2, the average length of MD direction is 1.35mm, and the average length on the CD direction is 1.04mm.For this purpose, used porcupine roller heats internally with deep fat, and the surface temperature of porcupine roller is set between 105 ℃ and 130 ℃.Use single-layer nonwoven, obtain the hole dimension of MD CD axial ratio approximate 1.Adopt speed under this situation up to 95m/min.
For example two-layer nonwoven is further tested.Ground floor is made by the spun-bonded non-woven fabrics of polypropylene production, and the second layer is by the bicomponent material manufacturing.Pre-bonding two-layer nonwoven, and bond area is about 17%.Good, stable especially circular perforations produces between 30 and 40g/m 2Between basis weight.
The preferred use bond area especially pre-bonded nonwoven between 8% and 25% is bored a hole.
Outside cited polypropylene and polyethylene, nonwoven also can have other material, for example, polyamide, polyester, glass fibre, PET, viscose glue, cellulose acetate, polyacrylonitrile, polystyrene, polyvinyl chloride, their copolymer, and their mixture.Also may use the bi-component or the multicomponent nonwoven of these manufacture of materials especially.
Preferred feature and embodiment are derived from the following drawings.Be not according to wherein shown feature limits the present invention, express but can be combined into further independent refinement with the embodiment of the invention described above, they here are not described in more detail.
Description of drawings
Fig. 1 shows first equipment of production perforated nonwoven,
Fig. 2 shows the details of Fig. 1,
Fig. 3 shows preperforative single-layer nonwoven,
Fig. 3 single-layer nonwoven after the perforation of Fig. 4 form,
Fig. 5 shows preperforative two-layer nonwoven,
Fig. 6 shows Fig. 5 two-layer nonwoven after the perforation,
Fig. 7 shows a kind of material, the especially felt material on the changeover bobbin,
Fig. 8 shows the schematic diagram of roll calender, wherein the pieceable roller of punching machine laterally can and, so that change surfacing and
Fig. 9 shows further roll calender schematic diagram, wherein replaceable roller.
The specific embodiment
Fig. 1 shows first equipment 1 of production perforated nonwoven 2, through various web guiders 5 and tonometry roller 6, arrives roll calender 7 from the pre-bonded nonwoven 3 of uncoiler 4 guiding.Roll calender 7 has first roller 8 and second roller 10 of band as the pricker 9 of punching machine.Second roller 10 is preferably used Metal Production, and is had felt material 11 on its surface.Felt material 11 is a shrinkage hose 12 preferably.Shrinkage hose 12 is enclosed within on second roller 10, makes the inner surface 13 of shrinkage hose 12 contact with the metal surface 14 of second roller 10.Thereby the surface of shrinkage hose 15 forms the outer surface of second roller 10 simultaneously.The pricker 9 of first roller 8 is engaged in this surface 15.Pre-bonded nonwoven 3 is directed on the roll calender 7 in the mode that it at first is resisted against on second roller 10.Pre-bonded nonwoven 3 has greater than 90 ° around second roller 10, particularly greater than 120 ° and be preferably greater than 180 ° looping angle.This can make the tension force in the nonwoven reduce, and it is because nonwoven rests on the felt material 11 up to pricker 9 perforation that this tension force reduces.Particularly, nonwoven 3 cunning that can flatten in this way of puncture not as yet.Preferably on nonwoven, act on the tension force of regulation.This tension force for example can detect through tonometry roller 6 at least, and preferably also can regulate through position regulator.
Also can be as can be seen from Figure 1, the gap 16 between first roller 8 and second roller 10 is adjustable.8, at least one roller can change self position in 10 two rollers.In this way, can regulate the paracentesis depth of pricker 9 in felt material 11.Can carry out verification to the adjusting of paracentesis depth, this is undertaken by the perforation image of verification perforated nonwoven 2 after for example being right after puncture.This especially can carry out automatically.For example, unit verification quality at once after testing, the preferred camera of this detecting unit, but and pre-selection parameter.And if the generation deviation can be carried out suitable adjusting.For example, in the time must changing felt material, can additionally indicate it.After unperforated nonwoven 3 was by pricker 9 perforation, according to a further independent idea, the nonwoven after the perforation was not pulled out gap 16 immediately and is reeled with up-coiler.But this nonwoven stays on first roller 8 again, and further guides according to the arrow indicated direction.Preferably along greater than 90 °, particularly greater than 120 ° and more preferably 160-270 ° looping angle looping.Subsequently perforated nonwoven 2 is peeled off first roller 8 and pricker 9.Guide nonwoven that many advantages can be provided in such a way: at first, can fully heat pricker, make that the perforation on nonwoven is more stable.In this case, by more consistent, the non-woven fabrics fiber heat supply around pricker 9 especially still slowlyer, can realize stabilisation.This makes and might for example soften the non-woven fabrics fiber that does not just directly contact with pricker 9, bigger cornerite, and the also preferred non-woven fabrics fiber that is positioned at its contiguous place that makes is softened to I haven't seen you for ages.Softening slight adhesion the in surface that preferably causes the fiber of mutual extrusion.In this way, can make the structure and the geometrical shape stabilityization of imagination.In addition, the nonwoven of this type guiding can make non-woven fabrics fiber be engaged in the nonwoven 2 of perforation by pricker 9 and further guiding on felt material 11 surfaces and mutual extrusion.The perforation structure stabilisation that this also causes pricker 9 to generate on nonwoven.The nonwoven 2 of this perforation is directed to the second tonometry roller 17 from first roller 8.Perforated nonwoven 2 arrives up-coiler 18 through web guider 5 therefrom.The stress that tonometry roller 17 allows to be applied on the nonwoven is repeated checksum in perforation procedure, and the speed of up-coiler 18 and/or uncoiler 4 can be adjusted accordingly.In addition, the speed of first roller 8 and/or second roller 10 can be adjusted according to the mode that the tensile stress that makes needs acts on the nonwoven.
Fig. 2 shows the details of Fig. 1.Can see that pricker 9 is engaged in the felt material 11 of shrinkage hose 12.Signal has shown a representative configuration of first roller 8.Pricker 9 is introduced into the surface of first roller 8.The known possibility that the constructive achievement of pricker in first roller 8 or other this target of punching machine is provided in correlative technology field.For example, please refer to correlative technology field document cited above, they are considered to content disclosed by the invention.
Fig. 3 illustrates a single-layer nonwoven 19, and it is shown as perforated in Fig. 4.Single-layer nonwoven 19 is spun-bonded non-woven fabrics preferably.This perforation is especially carried out according to making non-woven fabrics fiber protrude the mode that forms funnel-shaped structure from the surface.
Fig. 5 and Fig. 6 show a kind of two-layer nonwoven 20, itself or laminated together before perforation, perhaps by laminated together in the perforation procedure.The ground floor 21 and the second layer 22 are bored a hole simultaneously.In this situation, the formation of the funnel-shaped structure of ground floor 21 preferably extends in the second layer 22, and the mode of extension makes the latter have roughly smooth surface, and does not have further lifting.But, depending on the penetration depth of pricker, also can rise from the non-woven fabrics fiber of the ground floor 21 and/or the second layer 22 from the surface of two-layer nonwoven 20.
Fig. 7 shows changeover bobbin 23, and it preferably uses plastics-production.Shrinkage hose is enclosed on the changeover bobbin, and for example it especially has felt material 11.Felt material 11 can take off on changeover bobbin 23 once more, makes that new subsequently shrinkage hose can be placed on the changeover bobbin 23 once more.Preferred changeover bobbin 23 has certain elasticity and/or deformability.For example, in this way, can affact on the pair roller of calender this pair roller and location, perforating roller diametrically opposite ground from changeover bobbin 23 from the pressure that acts on the changeover bobbin 23 of shrinkage hose.Particularly, pressure may be so big, and adhering to of feasible changeover bobbin on pair roller 23 in this way is supported at least.
Fig. 8 is the schematic diagram of calender 24, and it can be laterally approaching.This permission needn't be dismantled second roller 10 and surface on replaceable second roller 10.Fixture 25 and/or covering can be for this purpose and laterally folded, or move up and/or down.This makes second roller 10 lateral access freely.Particularly, the structure of second roller 10 and corresponding size and weight layout can be carried out in the following manner, promptly make the fixture on calender 24 1 sides be enough to control the weight of second roller 10.This can carry out under calender 24 idle conditions, also can carry out under the condition of calender 24 work.For example, second roller 10 can be a kind of hollow roller, and the light material manufacturing can be arranged, and/or can be at least in part by plastics or even aluminium manufacturing.By using this can clamping in a side, also second roller 10 can be extracted calender frame, the surface of second roller 10 can be changed.
The structure of schematic diagram and work pattern and equipment corresponding as can be seen from Figure 1 among Fig. 9.In addition, shown a kind of principle among Fig. 9, according to this principle, second roller 10 can substitute with the 3rd roller 26 by converting mechanism more, in this manner, for example, replaceable second roller 10 when the 3rd roller 26 and first roller 8 mesh.For this reason, roll calender 7 is connected to each other by this mechanism's second roller 10 and the 3rd roller 26 except the 3rd roller 26 also has for example leverage 27.If for example, this leverage 27 is not according to moving around one (illustrating in greater detail) shown in the arrow, and then second roller 10 is removed from first roller 8.In contrast, the 3rd roller 26 moves to first roller 8.Fine setting to the distance of concrete roller 10,26 to first roller 8 preferably can independently be carried out by leverage 27.If the 3rd roller 26 and 8 engagements of first roller, the nonwoven of then preparing perforation can be by being directed to first roller 8 along the 3rd roller 26 shown in the dotted line among the figure.The position of tonometry roller 17 is adjusted at the position of the 3rd roller 26.In this way, guarantee even carry out tonometry during the 3rd roller 26 in operation.

Claims (25)

1. the method for a production perforated nonwoven (2), in the method, punching machine meshes in this nonwoven, and these punching machines are arranged on first roller (8), and the engagement of these punching machines passes in the surface (15) that this nonwoven enters second roller (10), it is characterized in that:
These punching machines move the fiber of nonwoven, thereby these punching machines mesh in the material (11) on second roller (10) into, described material (11) can move during meshing, thereby in described material, form some profiles, and wherein, described punching machine pushes described material (11), thus these fibers are compacted and nonwoven on perforate be stabilized.
2. according to the method for claim 1, it is characterized in that, these punching machines mesh into formation second roller (10) the surface to small part be fibrous described material (11).
3. according to the method for claim 1, it is characterized in that these punching machines are heated to a certain temperature, this temperature is lower than the melt temperature of nonwoven or forms the decomposition temperature of the material (11) of described profile.
4. according to claim 1,2 or 3 method, it is characterized in that, the material that uses (11) be a kind of felt material.
5. according to the method for claim 4, it is characterized in that this felt material (11) is positioned on second roller (10), as a kind of shrinkage hose type covering.
6. according to the method for claim 1, it is characterized in that, when these punching machine engagements, the fiber of nonwoven is forced to leave this nonwoven at least in part, thereby these fibers form a kind of structure, this structure correspondingly presents the geometry of punching machine, and this shape rises from this nonwoven surface after nonwoven moves through first roller (8) and second roller (10).
7. method according to claim 1 is characterized in that, when these punching machines meshed in the into described material (11), the fiber of nonwoven was drawn in the described material by consistent at least in part.
8. in accordance with the method for claim 1, it is characterized in that, detect this perforated nonwoven (2).
9. roll calender (7) that is used for nonwoven perforation, wherein, roll calender (7) has one first roller (8) and one second roller (10), this first roller (8) has the punching machine that stretches out from first roller (8) surface, and this first roller (8) and this second roller (10) form a gap (16), nonwoven to be bored a hole is conducted through this gap, it is characterized in that, this second roller (10) has a material (11) as its surface, this surface can be perforated device and move, gap (16) is configured to make punching machine to mesh in the into described material, thereby and forms some profiles in the described material of second roller.
10. according to the roll calender (7) of claim 9, it is characterized in that this gap (16) can be changed.
11., it is characterized in that described material to small part contains fiber according to claim 9 or 10 described roll calender.
12. the roll calender according to claim 9 is characterized in that, this material is a felt material (11).
13. the roll calender (7) according to claim 12 is characterized in that this felt material (11) has the thickness greater than 5 millimeters.
14., it is characterized in that this felt material (11) is a shrinkage hose covering according to claim 12 or 13 described roll calender (7).
15., it is characterized in that this felt material (11) is installed on second roller (10) under mechanical tension according to claim 12 or 13 described roll calender (7).
16., it is characterized in that according to claim 12 or 13 described roll calender (7), on second roller (10), apply one and connect material, this connects material generation one between this felt material (11) and second roller (10) and is connected.
17., it is characterized in that second roller (10) is driven according to the described roll calender of claim 9 (7).
18., it is characterized in that these punching machines are pricker (9) according to the described roll calender of claim 9 (7), but it can make nonwoven possess the fluid permeability to described nonwoven perforation.
19., it is characterized in that according to the described roll calender of claim 9 (7), a changeover bobbin is enclosed within on this second roller (10), arranged material (11) on it.
20., it is characterized in that according to the described roll calender of claim 9 (7), a detector cell is installed on this roll calender (7), it detects the nonwoven through perforation.
21., it is characterized in that roll calender (7) has a conversion equipment according to the described roll calender of claim 9 (7), be used for second roller (10) and the engagement of first roller (8) are converted to the engagement of one the 3rd roller and first roller (8).
22., it is characterized in that roll calender (7) is located and can laterally be entered at second roller (10) according to the described roll calender of claim 12 (7), be used for pull-up and pull this felt material (11).
23., it is characterized in that this felt material (11) is installed on second roller (10) according to the described roll calender of claim 14 (7) under mechanical tension.
24., it is characterized in that according to the described roll calender of claim 14 (7), on second roller (10), apply one and connect material, this connects material generation one between this felt material (11) and second roller (10) and is connected.
25., it is characterized in that according to the described roll calender of claim 15 (7), on second roller (10), apply one and connect material, this connects material generation one between this felt material (11) and second roller (10) and is connected.
CNB038168251A 2002-07-16 2003-07-05 Device and method of liquid-permeable perforation of a nonwoven Expired - Fee Related CN100335249C (en)

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US20060128245A1 (en) 2006-06-15
AU2003253030A1 (en) 2004-02-02
KR100944739B1 (en) 2010-03-03
ES2312816T3 (en) 2009-03-01
AU2003253030B2 (en) 2007-10-25
JP2005538260A (en) 2005-12-15
WO2004007158A1 (en) 2004-01-22
DE10232148B4 (en) 2009-01-08
JP4384035B2 (en) 2009-12-16
CN1668428A (en) 2005-09-14
EP1539445A1 (en) 2005-06-15
MXPA05000635A (en) 2005-03-31
PL208382B1 (en) 2011-04-29
PL373164A1 (en) 2005-08-22
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ATE406243T1 (en) 2008-09-15
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DK1539445T3 (en) 2008-12-08
KR20050026482A (en) 2005-03-15

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