EP0464400A1 - Méthode de fabrication des nappes non tissées aiguilletées - Google Patents

Méthode de fabrication des nappes non tissées aiguilletées Download PDF

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Publication number
EP0464400A1
EP0464400A1 EP91109448A EP91109448A EP0464400A1 EP 0464400 A1 EP0464400 A1 EP 0464400A1 EP 91109448 A EP91109448 A EP 91109448A EP 91109448 A EP91109448 A EP 91109448A EP 0464400 A1 EP0464400 A1 EP 0464400A1
Authority
EP
European Patent Office
Prior art keywords
threads
fleece
nonwoven
sealed
needling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP91109448A
Other languages
German (de)
English (en)
Other versions
EP0464400B1 (fr
Inventor
Heinrich Dipl.-Chem. Schneider
Heinz Bocksrucker
Karl Dipl.-Ing. Mühlberghuber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Polyfelt GmbH
Original Assignee
Polyfelt GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Polyfelt GmbH filed Critical Polyfelt GmbH
Publication of EP0464400A1 publication Critical patent/EP0464400A1/fr
Application granted granted Critical
Publication of EP0464400B1 publication Critical patent/EP0464400B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • D04H5/00—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length
    • D04H5/06—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length strengthened or consolidated by welding-together thermoplastic fibres, filaments, or yarns
    • 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
    • D04H1/44—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/48—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres in combination with at least one other method of consolidation
    • D04H1/485—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres in combination with at least one other method of consolidation in combination with weld-bonding

Definitions

  • the invention relates to a process for the production of needled spunbonded nonwovens, in which a nonwoven consisting of deposited continuous filaments is thermally sealed only on the surface of the nonwoven and needled with a lubricant.
  • this disadvantageous process step of pre-needling can be eliminated by placing the still unconsolidated nonwoven coming from the spinning system on a rotating screen drum on which the finishing agent is sucked through the nonwoven in the form of a mist by means of negative pressure and over several suction zones are sucked through the inside of the sieve drum.
  • the main disadvantage of this already improved method is that the It is still unsatisfactory that the fleece is uniform in weight per unit area, that high production speeds are not possible and that a relatively complicated depositing device with the aid of negative pressure and complicated regulations is required.
  • the object of the invention was to avoid the disadvantages described and above all to provide a method with which a uniform nonwoven with good mechanical properties can be produced at high production speed.
  • the solution to the problem was found in that the fleece coming from the spinning plant is thermally sealed only on the surfaces.
  • spunbonded nonwovens with good basis weight uniformity can be produced approximately twice, in special cases also with higher production speeds compared to known methods.
  • speeds of up to about 40 m / min and, in special cases, up to about 60 m / min can be achieved, depending on the nonwoven weight.
  • conventional Processes for producing needled spunbonded nonwovens have a maximum production speed of about 20 m / min.
  • the high production speeds according to the invention are possible, in particular, due to the replacement of the limiting process steps of pre-needling or of finishing on the screen drum by means of negative pressure due to the much faster process step of thermal sealing.
  • Due to the thermal sealing of the fleece surfaces the threads lying on the surface are easily sintered together at their crossing points without the threads melting.
  • the surfaces of these fibers lying on the nonwoven surface are softened without melting, a kind of sintering effect being achieved at the crossing points of the fibers.
  • the connection of the threads by sealing is reversible and is loosened again when needling, so that finally the end product is a nonwoven that is only solidified by needling and not by thermal fusion.
  • the two nonwoven surfaces are preferably sealed only to a maximum depth of 0.2 mm.
  • the thermal sealing can for example by means of heated rollers, belts, plates or surfaces or by radiant heaters, e.g. B. IR emitters. Heated rolls are preferably used; the nonwoven is particularly preferably passed through the nip of two calender rolls.
  • the roller temperature and the surface temperature of the fleece are below the Melting point of the thermoplastic threads used.
  • the calender rolls are preferably heated to approximately 120-140 ° C.
  • the advantage of using a calender is that the sintering effect on the softened, non-melted fibers at the crossing points is increased by the roller pressure. Both the size of the nip and the roller pressure can be optimally adapted to the respective fleece weights, the thread count, the temperature, the thermoplastic threads used and the production speed.
  • the process according to the invention is suitable for producing nonwovens from all thermoplastics suitable for spunbonding technology. It is preferred for the production of spunbonded fabrics from polyolefin threads, such as. B. polyethylene or polypropylene threads, polyamide threads or polyester threads are used. Polypropylene threads are particularly preferably used, both threads made of polypropylene homopolymers and propylene-ethylene copolymers being possible.
  • the basis weights of the nonwovens produced are approximately 30 to 2500 g / m2, preferably approximately 100 to 2000 g / m2.
  • the lubricant can by conventional methods such. B. be applied by spraying or by means of impregnation rollers.
  • the subsequent needling is carried out on known needling machines, for example as described in DE-PS 30 09 116, where solidification is carried out all at once or in stages up to the desired degree of needling.
  • Polypropylene with an MFI (melt flow index at 230 ° C and 2.16 kg load according to DIN 53735) of 17-21 and a molecular mass distribution of 2.3-2.7 was melted in an extruder at 230-260 ° C a 1 m wide test spinning system spun into fibers by means of spinnerets, drawn off via an aerodynamic take-off system, stretched to 8-12 dtex fineness and placed on a spinning belt to form a tangled thread structure.
  • a fleece with a basis weight of 110 g / m2 was produced.
  • the as yet unconsolidated sheet was then introduced into a two-roll calender via an infeed belt.
  • the loose fleece structure was reversibly consolidated, whereby only the fibers located on the fleece surfaces were caught and softened by the temperature influence, as well as by the roller pressure were pressed together, a kind of sintering effect being achieved at the crossing points of the fibers.
  • Sufficiently viable surface layers were created on the top and bottom sides of the fleece, which can be redissolved in the later process, the layer thickness being less than 0.1 mm.
  • This preliminary fleece was then wetted with a lubricant on a roll pad.
  • the sealed and finished nonwoven was then fed to a two-stage needling (80 punctures / cm 2 in each case), the sealed nonwoven surface being completely dissolved.
  • the fleece obtained had the following properties:
  • Example 2 Analogously to Example 1, a fleece with a basis weight of 1000 g / m2 was produced at a belt speed of 3 m / min. The pre-consolidation was carried out at 120 ° C - 125 ° C roller surface temperature and 35 - 40 N / mm line pressure. The thickness of the sealed surface layer was 0.2 mm, at least 90-95% of the fibers remained unconsolidated.
  • Example 2 Analogously to Example 1, a web with a basis weight of 70 g / m 2 was produced at a belt speed of 35 m / min. The pre-consolidation was carried out at 130 - 135 ° C roller surface temperature and 20 - 30 N / mm line pressure. The thickness of the sealed surface layer was 0.05 mm, at least 60% of the fibers remained unconsolidated.
  • polyester with an MFI (280 ° C / 2.16 kg) of 40-45 and a relative viscosity of 1.3-1.4 at 280-300 ° C were fibers with a fineness of 2-8 dtex spun and at a production speed of 27 m / min a fleece with a basis weight of 100 g / m2 is produced.
  • the calender was pre-consolidated at a roller surface temperature of 180 - 190 ° C and 25 - 30 N / mm line pressure.
  • Basis weight 100 g / m2 Uniformity of basis weight 8th % Strip tensile strength 680 N / 10 cm Stamp puncture resistance 1140 N.
  • Fibers with a fineness of 6-8 dtex were spun from polyamide 6 with a relative viscosity of 2.4-2.5 at 300-310 ° C. and a nonwoven with a basis weight at a production speed of 10 m / min of 250 g / m2.
  • the calender was pre-consolidated at a roll surface temperature of 190 - 200 ° C and 30 - 35 N / mm line pressure.
  • fibers with a fineness of 8-12 dtex were spun from polyethylene (HDPE) with an MFI (190 ° C./2.16 kg) of 12-14 at 210-240 ° C. and at a production speed of 25 m / min a fleece with a basis weight of 110 g / m2 is produced.
  • the calender was pre-consolidated at a roll surface temperature of 90 - 100 ° C and 25 - 30 N / mm line pressure.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Paper (AREA)
  • Artificial Filaments (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Exposure Of Semiconductors, Excluding Electron Or Ion Beam Exposure (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Moulding By Coating Moulds (AREA)
  • Materials For Medical Uses (AREA)
  • Fats And Perfumes (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Element Separation (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Inorganic Fibers (AREA)
  • Laminated Bodies (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Knitting Of Fabric (AREA)
EP91109448A 1990-07-02 1991-06-08 Méthode de fabrication des nappes non tissées aiguilletées Expired - Lifetime EP0464400B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT1401/90 1990-07-02
AT0140190A AT394216B (de) 1990-07-02 1990-07-02 Verfahren zur herstellung von vernadelten spinnvliesen

Publications (2)

Publication Number Publication Date
EP0464400A1 true EP0464400A1 (fr) 1992-01-08
EP0464400B1 EP0464400B1 (fr) 1995-07-19

Family

ID=3513094

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91109448A Expired - Lifetime EP0464400B1 (fr) 1990-07-02 1991-06-08 Méthode de fabrication des nappes non tissées aiguilletées

Country Status (36)

Country Link
US (1) US5213735A (fr)
EP (1) EP0464400B1 (fr)
JP (1) JPH0796747B2 (fr)
KR (1) KR100195383B1 (fr)
CN (1) CN1025874C (fr)
AT (2) AT394216B (fr)
AU (1) AU625571B2 (fr)
BG (1) BG60076B2 (fr)
BR (1) BR9102744A (fr)
CA (1) CA2043685C (fr)
CZ (1) CZ280473B6 (fr)
DE (1) DE59106012D1 (fr)
DK (1) DK0464400T3 (fr)
ES (1) ES2074609T3 (fr)
FI (1) FI97976C (fr)
HR (1) HRP940776B1 (fr)
HU (1) HU211375B (fr)
IE (1) IE67129B1 (fr)
LT (1) LT3452B (fr)
LV (1) LV11196B (fr)
MD (1) MD392C2 (fr)
MX (1) MX9100039A (fr)
MY (1) MY107850A (fr)
NO (1) NO177722C (fr)
NZ (1) NZ238441A (fr)
PL (1) PL167572B1 (fr)
PT (1) PT98176B (fr)
RO (1) RO108704B1 (fr)
RU (1) RU1833444C (fr)
SA (1) SA91110424B1 (fr)
SI (1) SI9111134A (fr)
SK (1) SK280277B6 (fr)
TR (1) TR25463A (fr)
UA (1) UA12839A (fr)
YU (1) YU47615B (fr)
ZA (1) ZA914422B (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001146671A (ja) * 1999-11-16 2001-05-29 Toyobo Co Ltd 長繊維不織布
KR100430914B1 (ko) * 2001-08-01 2004-05-10 전종술 폐 유리섬유 휄트의 개섬방법 및 그 장치
FR2862987B1 (fr) 2003-11-28 2006-09-22 Saint Gobain Vetrotex Mat de verre aiguillette
JP4071704B2 (ja) * 2003-12-08 2008-04-02 名古屋油化株式会社 伸縮性不織布からなる成形材料、およびそれを用いてなる内装材
DE502004009664D1 (de) * 2004-11-23 2009-08-06 Reifenhaeuser Gmbh & Co Kg Laminat aus zumindest drei Schichten und Verfahren zur Herstellung eines zumindest dreischichtigen Laminates
US20090220729A1 (en) * 2006-03-24 2009-09-03 Francois Roederer Needle-Punched Glass Mat
CN101219307B (zh) * 2007-09-27 2010-05-19 上海博格工业用布有限公司 纺丝成网与水射流加固结合的非织造过滤材料的制作方法
RU2415671C1 (ru) * 2010-02-01 2011-04-10 Гаджи Джалалутдинович Ахмедов Способ лечения воспалительных осложнений у пациентов при амбулаторных хирургических операциях в полости рта
CN106906538B (zh) * 2017-02-22 2019-12-13 天鼎丰聚丙烯材料技术有限公司 一种聚丙烯长丝、聚丙烯长丝针刺反滤土工布及制备方法
CN106868718B (zh) * 2017-02-22 2020-02-21 天鼎丰聚丙烯材料技术有限公司 一种高强聚丙烯纺粘针刺土工布及其制备方法
FR3070623B1 (fr) * 2017-09-04 2020-10-09 Coriolis Composites Procede de realisation d’une piece en materiau composite par aiguilletage oriente d’une preforme

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3994759A (en) * 1970-07-23 1976-11-30 Phillips Petroleum Company Needled nonwoven material and method for making same
US4632858A (en) * 1984-02-17 1986-12-30 Firma Carl Freudenberg Filler fleece material and method of manufacturing same
EP0363707A2 (fr) * 1988-10-13 1990-04-18 Grünzweig + Hartmann AG Procédé de fabrication d'un feutre aiguilleté en laine de laitier

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1601049A (fr) * 1968-12-31 1970-08-03
US3660555A (en) * 1969-03-06 1972-05-02 Phillips Petroleum Co Method of bonding nonwoven textile fabrics
FR2157270A5 (en) * 1971-10-20 1973-06-01 Pate De Bois Non-woven fabric - for soil stabilisation
CA989879A (en) * 1972-04-10 1976-05-25 Ping-Wha Lin Calcium oxide particles coated with calcium sulfate
JPS5335623B2 (fr) * 1972-07-17 1978-09-28
IT992893B (it) * 1972-08-17 1975-09-30 Lutravil Spinnvlies Veli di filatura ad alta resisten za e dimensionalmente stabili e processo per la loro preparazione
JPS6025543B2 (ja) * 1975-11-10 1985-06-19 株式会社クラレ 絡合性の良好な連続フイラメント不織布の製造法
DE3009116A1 (de) * 1980-03-10 1981-09-24 Lentia GmbH Chem. u. pharm. Erzeugnisse - Industriebedarf, 8000 München Verfahren und vorrichtung zur herstellung von vernadelten, in wirrlage abgelegten endlosfadenvliesen
JPS6025543A (ja) * 1983-07-21 1985-02-08 Teijin Yuka Kk 触媒組成物および脱アルキル化方法
US4582750A (en) * 1985-04-16 1986-04-15 E. I. Du Pont De Nemours And Company Process for making a nonwoven fabric of needling, heating, burnishing and cooling
JP2576973B2 (ja) * 1986-07-05 1997-01-29 キヤノン株式会社 セラミツク形成組成物及びこれを用いた半導体磁器基体と誘電体磁器基体並びにコンデンサ−
JP2749330B2 (ja) * 1988-08-22 1998-05-13 ユニチカ株式会社 高モジユラスニードルパンチ不織布及びその製造方法
US4935295A (en) * 1988-12-01 1990-06-19 E. I. Du Pont De Nemours And Company Needling process for spundbonded composites

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3994759A (en) * 1970-07-23 1976-11-30 Phillips Petroleum Company Needled nonwoven material and method for making same
US4632858A (en) * 1984-02-17 1986-12-30 Firma Carl Freudenberg Filler fleece material and method of manufacturing same
EP0363707A2 (fr) * 1988-10-13 1990-04-18 Grünzweig + Hartmann AG Procédé de fabrication d'un feutre aiguilleté en laine de laitier

Also Published As

Publication number Publication date
CS203591A3 (en) 1992-08-12
RO108704B1 (ro) 1994-07-29
HU912217D0 (en) 1991-12-30
BR9102744A (pt) 1992-02-04
PT98176A (pt) 1993-08-31
PL290904A1 (en) 1992-02-10
SK280277B6 (sk) 1999-10-08
ES2074609T3 (es) 1995-09-16
HUT65336A (en) 1994-05-02
US5213735A (en) 1993-05-25
PT98176B (pt) 1998-12-31
KR920002862A (ko) 1992-02-28
NO177722C (no) 1995-11-08
NO912359L (no) 1992-01-03
AU7948391A (en) 1992-03-19
MY107850A (en) 1996-06-29
SA91110424B1 (ar) 2003-01-15
CA2043685A1 (fr) 1992-01-03
PL167572B1 (pl) 1995-09-30
SI9111134A (en) 1997-06-30
NO912359D0 (no) 1991-06-18
IE67129B1 (en) 1996-03-06
AT394216B (de) 1992-02-25
UA12839A (uk) 1997-02-28
LV11196B (en) 1996-08-20
LTIP1569A (en) 1995-06-26
CZ280473B6 (cs) 1996-01-17
NO177722B (no) 1995-07-31
NZ238441A (en) 1993-02-25
AU625571B2 (en) 1992-07-16
LV11196A (lv) 1996-04-20
ATA140190A (de) 1991-08-15
BG60076B2 (bg) 1993-09-30
EP0464400B1 (fr) 1995-07-19
YU47615B (sh) 1995-10-24
HRP940776A2 (en) 1996-08-31
FI912987L (fi) 1992-01-03
JPH0796747B2 (ja) 1995-10-18
HRP940776B1 (en) 1998-06-30
YU113491A (sh) 1994-11-15
FI97976C (fi) 1997-03-25
FI97976B (fi) 1996-12-13
CA2043685C (fr) 2000-10-24
CN1025874C (zh) 1994-09-07
KR100195383B1 (ko) 1999-06-15
LT3452B (en) 1995-10-25
DE59106012D1 (de) 1995-08-24
CN1057871A (zh) 1992-01-15
TR25463A (tr) 1993-05-01
RU1833444C (en) 1993-08-07
JPH04241160A (ja) 1992-08-28
FI912987A0 (fi) 1991-06-19
DK0464400T3 (da) 1995-09-04
IE911806A1 (en) 1992-01-15
MX9100039A (es) 1992-02-28
HU211375B (en) 1995-11-28
MD392C2 (ro) 1996-06-30
ZA914422B (en) 1992-03-25
ATE125314T1 (de) 1995-08-15

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