EP0054610A1 - Procédé pour consolider et enduire simultanément et en continu une nappe de fibres - Google Patents

Procédé pour consolider et enduire simultanément et en continu une nappe de fibres Download PDF

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Publication number
EP0054610A1
EP0054610A1 EP81106160A EP81106160A EP0054610A1 EP 0054610 A1 EP0054610 A1 EP 0054610A1 EP 81106160 A EP81106160 A EP 81106160A EP 81106160 A EP81106160 A EP 81106160A EP 0054610 A1 EP0054610 A1 EP 0054610A1
Authority
EP
European Patent Office
Prior art keywords
binder
printed
adhesive
nonwoven
printing
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
EP81106160A
Other languages
German (de)
English (en)
Other versions
EP0054610B1 (fr
Inventor
Walter Dr. Föttinger
Sepp Dr. Wagner
Bohuslav Tecl
Werner Enders
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.)
Carl Freudenberg KG
Original Assignee
Carl Freudenberg KG
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 Carl Freudenberg KG filed Critical Carl Freudenberg KG
Priority to AT81106160T priority Critical patent/ATE8281T1/de
Publication of EP0054610A1 publication Critical patent/EP0054610A1/fr
Application granted granted Critical
Publication of EP0054610B1 publication Critical patent/EP0054610B1/fr
Expired 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
    • 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
    • D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4326—Condensation or reaction polymers
    • D04H1/435—Polyesters
    • 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
    • D04H1/58—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 applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D04H1/64—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 applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions
    • D04H1/66—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 applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions at spaced points or locations
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M17/00—Producing multi-layer textile fabrics

Definitions

  • the invention relates to a method for the simultaneous, continuous consolidation and coating of a nonwoven fabric with a binder and with an adhesive, in which the binder is counter-pressed from one side synchronously against the adhesive compound printed from the other side in the form of dedicated sub-areas, the Partial areas have a distance from each other.
  • Binders primarily serve to bond the fibers of a nonwoven fabric to one another and thereby give it strength. The strength is the greater the more fibers are glued together. It is therefore desirable that the binder penetrate into the interior of the treated nonwoven and, after it has solidified, be distributed as evenly as possible over the entire cross section.
  • crosslinkable polymeric substances are used as binders for practical use.
  • the adhesive compositions applied to the surface of fixing inserts serve to enable bonding with another substance.
  • Common adhesive compositions are thermoplastic substances, and the activation is effected by applying pressure and heat, for example with the aid of an iron.
  • the binder it is therefore desirable that the adhesive does not penetrate into the interior of the nonwoven used, even when ironing, but is available as completely and concentrated as possible for the mutual bonding of the superimposed surfaces.
  • the method mentioned at the beginning makes it possible to apply the binder and the adhesive composition congruently to the top and to the bottom of the nonwoven used. Due to the identical printing process used in the treatment of the top and bottom surfaces, however, the same press-in forces result, and it is therefore extremely difficult to obtain the desired one to realize different press-in of binder and adhesive. A mutual modification of the size of the applied areas is not possible and higher printing speeds can lead to an unclean print image and thus to undefined properties of the fixing insert obtained, especially when treating non-pre-consolidated nonwovens.
  • the invention has for its object to develop the method mentioned in such a way that a simultaneous, continuous printing of a binder and an adhesive on an unconsolidated nonwoven in the form of partial areas with a congruent center line on both sides a precise print image is achieved, which makes it possible to vary the specific order quantity on both sides as well as the mutual press-in at high working speeds and this enables a reduction in the specific energy consumption required.
  • a radiation-crosslinkable binder is printed from the underside against a thermoplastic adhesive compound which is printed on the hotmelt principle on the upper side of the nonwoven, and crosslinked by subsequent irradiation.
  • Both the binder paste and the adhesive melt contain no constituents that have to be removed by complex, subsequent drying processes, and the crosslinking of the binder can be brought about almost suddenly using high-energy rays.
  • the proposed method is not only extremely unproblematic to use due to the one-step procedure, but it also enables high working speeds of, for example, 50 to 150 m / min to be achieved with a reduced specific energy consumption. It is an advantage to be emphasized that a prior consolidation of the nonwovens used is not necessary. Rather, it is sufficient if these are compressed to such an extent by a previous pressing in the inner structure that the fiber structure is not destroyed during the printing process. This goal can be achieved without difficulty if a nonwoven fabric made of fibers with a stack length of at least 25 mm is used, the fibers of which are assigned to one another in a tangled distribution.
  • the printing paste or melt used is applied from both sides in partial areas, the center points of which are arranged on a common center line. In this respect they are assigned to each other symmetrically.
  • the size of the partial areas can be varied relative to one another, and can therefore be easily determined in such a way that the desired purpose in each case, namely the strengthening of the nonwoven in itself or thermosetting with a outer material, is achieved in an optimal manner.
  • Such an optimization would, however, mean that the processor would have to stock a special fixing insert depending on the absorbency and on other properties of each special material, which would quickly remove the obvious advantage. It has therefore proven useful to print the binder in partial areas, whose diameter is at least as large as that of the adhesive. Particularly good puncture resistance against the penetration of the adhesive during ironing through the fixing lines can be achieved if the partial surfaces made of binder have a larger diameter than the partial surfaces made of adhesive. The difference should not exceed 60% in order to prevent undesirable stiffening of the fixing insert.
  • the partial areas are distributed on the fixing insert in a surface grid that can be divided evenly or unevenly. In addition to the stiffness of the fixing insert, this can influence the textile case.
  • the printing methods used for the application of the adhesive and the binder basically belong to different types, which means that the two substances, which are intended to perform different types of tasks, can be applied in a favorable mutual coordination. It is also essential that at least one of the two opposing printing cylinders has soft-elastic properties by means of which differences in thickness or elasticity of the printed nonwoven fabric are compensated for during the printing process to such an extent that a disturbance in the printed image produced is avoided.
  • the binder can be applied using a high pressure, flat or gravure cylinder with a soft elastic jacket made of rubber. In all three cases, a good pressing into the interior of the nonwoven fabric is achieved. In addition, the high-pressure process combines the further advantage of a particularly good elasticity of the surface with good protection against soiling compared to fiber components detaching from the surface of the printed nonwoven fabric.
  • the specific amount of binder applied can be continuously changed by adjusting the printing device used. If a corresponding change is only necessary when using a gravure printing process, the use of a correspondingly modified printing roller is necessary. Modified printing rollers are also required if the size of the partial areas is to be modified in the high, flat or gravure printing process.
  • thermoplastic adhesive compound printed on the top The use of a binder that can be crosslinked by UV rays enables the binder to cure almost spontaneously due to the high energy density during crosslinking.
  • the inevitable excess energy, which can amount to 50% of the total energy used, can, however, diverge if the cooling is inadequate and thus lead to poor contour definition of the thermoplastic adhesive compound printed on the top.
  • All the relevant adhesive compositions can be processed, for example those based on polyolefin, copolyamides, polyurethanes or copolyesters.
  • the melting point is generally in the range between 100 and 130 ° C.
  • the adhesive used is printed in a melted form with the help of a heated bowl. To prevent contamination of the surface, it is specially equipped, for example with a silicone or a PTFE coating.
  • the upper and lower pressure rollers are connected by a gear transmission, which ensures that the mutual assignment of the printed partial areas of binder and adhesive is always assigned to one another in a constant form.
  • the rigid coupling enables a mutual assignment of extremely high precision, in which the centers of the partial areas printed on both sides can completely coincide with a working width of more than 1 m and a diameter of the partial areas of less than 1 mm.
  • a 25 g / m 2 heavy nonwoven fabric is made of 50% polyester fibers 1.7 dtex / 38 mm and 50% polyester fibers 3.3 dtex / 60 mm at a speed of 65 m / min.
  • the fleece is passed through a pair of rollers positioned at a line pressure of 13 kp / cm, the surface temperature of which is 165 ° C. and compacted therein.
  • the nonwoven web is passed through a printing device according to the attached drawing.
  • the lower pressure roller 2 is designed as a rubber high-pressure roller.
  • the rubber is resistant to organic liquids and has a Shore A hardness of 65.
  • the division of the high pressure pattern corresponds in the first case to a 17 mesh row point, at second case, a so-called computer point, in which 52 statistically distributed surveys per cm 2 are provided.
  • Each of these two rollers has a specially made hotmelt engraving roller with an identical pitch.
  • the diameter of the printing surface of the high-pressure roller is 0.8 mm, the engraving depth is 0.4 mm.
  • the binder mixture described below is applied via the rubber immersion roller 4 and the chrome-plated transfer roller 3, which is also heated to a temperature of 60 ° C and provided with a 60 nesh engraving Transfer rubber high-pressure roller 2.
  • the speed of the dipping roller 4 is set so that a print application from the high pressure roller to the fleece results in 2.5 g / m 2 .
  • the two pressure rollers 2 and 6 are set so that the medium and adhesive mass are absolutely congruent.
  • the binder mixture has the following composition:
  • a copolyester with a melting range of 113 to 116 ° C. and a melt index I2 / 140 ° C. of 18 g / 10 min is used as the hot-melt adhesive. It is melted in an extruder at a final temperature of 175 ° C and via a heated slot die in the hot-melt adhesive trough, which is also heated fed.
  • the engraving roller has a temperature of 170 ° C.
  • the wells diameter of the gravure roll in both cases is 0.55 mm, the Näpfc h entiefe 0.2 mm.
  • the wells of the rotating engraving roller fill in the hot-melt adhesive trough with melted polymer, which is transferred to the nonwoven web.
  • 2 binders with a temperature of 60 ° C are pressed into the interior of the nonwoven fabric from the underside via the high-pressure roller, whereby a spontaneous cooling and solidification of the adhesive 7 printed on the top is effected. 14 g of adhesive are applied per m 2 . No further treatment of the hot melt adhesive is required.
  • the fleece After leaving the printing unit, the fleece is transported with the help of a metal carrying belt through a light lock into an exposure box, where it is passed through two rows of high-pressure mercury lamps with an output of 200 watts / cm - one row each from above and from below .
  • the binder cures instantly.
  • the fleece leaves the exposure box through a second light lock and, after passing through a cooling roller, is cut into two webs, each with a finished width of 90 cm, and rolled up.
  • the heat-fixable interlining nonwoven fabric produced in this way is extremely soft and drapable, as well as very dry-cleaning-resistant and excellent wash-resistant. He's on the usual flat and Pieter h continuous presses properly to process, and even at high vapor exposure no inclination to remindverklebung, that is to penetrate the adhesive material by the reinforcement insert.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Laminated Bodies (AREA)
  • Printing Plates And Materials Therefor (AREA)
  • Nonwoven Fabrics (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Manufacturing Of Multi-Layer Textile Fabrics (AREA)
EP81106160A 1980-12-24 1981-08-06 Procédé pour consolider et enduire simultanément et en continu une nappe de fibres Expired EP0054610B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81106160T ATE8281T1 (de) 1980-12-24 1981-08-06 Verfahren zum gleichzeitigen, kontinuierlichen verfestigen und beschichten eines vliesstoffes.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3049037A DE3049037C2 (de) 1980-12-24 1980-12-24 Verfahren zum gleichzeitigen, kontinuierlichen Verfestigen und Beschichten eines Vliesstoffes
DE3049037 1980-12-24

Publications (2)

Publication Number Publication Date
EP0054610A1 true EP0054610A1 (fr) 1982-06-30
EP0054610B1 EP0054610B1 (fr) 1984-07-04

Family

ID=6120286

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81106160A Expired EP0054610B1 (fr) 1980-12-24 1981-08-06 Procédé pour consolider et enduire simultanément et en continu une nappe de fibres

Country Status (8)

Country Link
EP (1) EP0054610B1 (fr)
JP (1) JPS57128248A (fr)
AR (1) AR229251A1 (fr)
AT (1) ATE8281T1 (fr)
CA (1) CA1182067A (fr)
DE (2) DE3049037C2 (fr)
ES (1) ES8301297A1 (fr)
ZA (1) ZA818889B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2384250A (en) * 2001-11-19 2003-07-23 Truetzschler Gmbh & Co Kg Apparatus for consolidating a conveyable fibre web
GB2557836B (en) * 2015-11-02 2022-12-28 Trimaco Inc Slip-resistant protective mat

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5891859A (ja) * 1981-11-20 1983-05-31 日本バイリ−ン株式会社 不織布の製造方法
WO1996005359A1 (fr) * 1994-08-09 1996-02-22 Asahi Kasei Kogyo Kabushiki Kaisha Tissu adhesif de rembourrage, son procede de fabrication et colle pour tissus adhesifs
US6638605B1 (en) * 1999-11-16 2003-10-28 Allegiance Corporation Intermittently bonded nonwoven disposable surgical laminates
US20040043212A1 (en) 2000-08-05 2004-03-04 Peter Grynaeus Thermal control nonwoven material
DE102005030484B4 (de) 2005-06-28 2007-11-15 Carl Freudenberg Kg Elastischer Vliesstoff, Verfahren zu dessen Herstellung und dessen Verwendung

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3120449A (en) * 1961-04-05 1964-02-04 Johnson & Johnson Fibrous materials and methods of making the same
FR2104775A2 (fr) * 1969-10-30 1972-04-21 Stork Amsterdam

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5028094B2 (fr) * 1971-08-14 1975-09-12
CH1306371A4 (de) * 1971-09-06 1975-08-29 Schaetti & Co Kunstoffwerk Verfahren zum Aufbringen eines gleichmässig verteilten, aus thermoplastischem oder thermohärtbarem Kunststoff bestehenden Beschichtungsmusters auf eine Stoffbahn
JPS4981659A (fr) * 1972-12-13 1974-08-06
JPS565574B2 (fr) * 1973-05-07 1981-02-05
JPS5042171A (fr) * 1973-08-22 1975-04-17
JPS5361768A (en) * 1976-11-12 1978-06-02 Kanai Hiroyuki Nonnwoven core fabric for iron adhering
EP0012776B1 (fr) * 1978-12-21 1982-12-15 Firma Carl Freudenberg Procédé de consolidation de nappes non-tissées
DE2914617C2 (de) * 1979-04-11 1982-06-03 Fa. Carl Freudenberg, 6940 Weinheim Verfahren und Vorrichtung zum gleichzeitigen, kontinuierlichen Aufbringen von Pasten auf einander gegenüberliegende Oberflächenzonen der Vorder- und Rückseite eines flexiblen, porösen Flächengebildes

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3120449A (en) * 1961-04-05 1964-02-04 Johnson & Johnson Fibrous materials and methods of making the same
FR2104775A2 (fr) * 1969-10-30 1972-04-21 Stork Amsterdam

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2384250A (en) * 2001-11-19 2003-07-23 Truetzschler Gmbh & Co Kg Apparatus for consolidating a conveyable fibre web
GB2384250B (en) * 2001-11-19 2005-10-05 Truetzschler Gmbh & Co Kg Apparatus for consolidating a conveyable fibre web
GB2557836B (en) * 2015-11-02 2022-12-28 Trimaco Inc Slip-resistant protective mat

Also Published As

Publication number Publication date
DE3049037A1 (de) 1982-07-22
DE3049037C2 (de) 1984-05-03
ES508331A0 (es) 1982-12-01
ATE8281T1 (de) 1984-07-15
JPS6317148B2 (fr) 1988-04-12
ZA818889B (en) 1983-03-30
DE3164567D1 (en) 1984-08-09
JPS57128248A (en) 1982-08-09
EP0054610B1 (fr) 1984-07-04
CA1182067A (fr) 1985-02-05
AR229251A1 (es) 1983-07-15
ES8301297A1 (es) 1982-12-01

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