EP0046834B1 - Verfahren zur Herstellung eines flauschigen, leichtgewichtigen, weichen Vliesstoffes - Google Patents

Verfahren zur Herstellung eines flauschigen, leichtgewichtigen, weichen Vliesstoffes Download PDF

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Publication number
EP0046834B1
EP0046834B1 EP81101694A EP81101694A EP0046834B1 EP 0046834 B1 EP0046834 B1 EP 0046834B1 EP 81101694 A EP81101694 A EP 81101694A EP 81101694 A EP81101694 A EP 81101694A EP 0046834 B1 EP0046834 B1 EP 0046834B1
Authority
EP
European Patent Office
Prior art keywords
fibres
process according
needles
web
fibers
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.)
Expired
Application number
EP81101694A
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German (de)
English (en)
French (fr)
Other versions
EP0046834A1 (de
Inventor
Jürgen Dr. Knoke
Manfred Jöst
Bohuslav Tecl
Erich Dr. Fahrbach
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6110569&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0046834(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Carl Freudenberg KG filed Critical Carl Freudenberg KG
Priority to AT81101694T priority Critical patent/ATE9011T1/de
Publication of EP0046834A1 publication Critical patent/EP0046834A1/de
Application granted granted Critical
Publication of EP0046834B1 publication Critical patent/EP0046834B1/de
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
    • D04H1/44—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
    • 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
    • D04H1/4334—Polyamides
    • 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
    • D04H1/44—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
    • 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
    • D04H1/541—Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres
    • D04H1/5412—Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres sheath-core
    • 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
    • D04H1/541—Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres
    • D04H1/5418—Mixed fibres, e.g. at least two chemically different fibres or fibre blends
    • 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
    • D04H1/542—Adhesive fibres
    • D04H1/549—Polyamides
    • 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]
    • Y10T442/682—Needled nonwoven fabric
    • Y10T442/684—Containing at least two chemically different strand or fiber materials
    • Y10T442/688—Containing polymeric strand or fiber material
    • 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]
    • Y10T442/69—Autogenously bonded nonwoven fabric

Definitions

  • Lightweight soft nonwovens are known. They are used in almost all areas in which woven or knitted textiles are used.
  • Nonwovens and also the light nonwovens manufactured in various ways have a smooth surface. They often have a relatively stiff, paper-like handle that is not desirable for many applications. This disadvantage could be prevented by a reduced proportion of binder, but the resistance to washing and dry cleaning would then be reduced and the mechanical resistance of the products would decrease to an undesirable extent.
  • a method for producing a matted nonwoven is already known, in which a nonwoven which has already been bonded is provided with an adhesive layer on the surface. This nonwoven is needled. The tufts of fibers caught by the needling are pulled through the adhesive layer and then felted. This creates a non-woven fabric with a rough surface, but it is a bulky felt-like structure that can be used as a heavy lining or for blankets.
  • the invention is based on the object of developing a very light, fluffy and soft nonwoven with a very textile case, which, with good mechanical properties, also has good resistance to washing and dry cleaning.
  • This object is achieved according to the invention in a method for producing a fluffy, light-weight and soft nonwoven fabric by needling on one or both sides of a binder-containing nonwoven fabric made of staple and / or continuous fibers which already contains bound fibers, in that the nonwoven containing thermoplastic softenable binder fibers the needles are consolidated across their entire cross-section by hot calendering or thermofusion and that the consolidated nonwoven is subsequently needled by barbed felting needles at approx. 20 to 100 punctures / cm 2, the penetration depth of the felting needles being dimensioned such that a fluffy surface is created.
  • a known nonwoven bonded with the aid of binding fibers is therefore needled on one or both sides, preferably at high speed.
  • the fluffy fleece surface that emerges on the cut-out side is very resistant to mechanical influences and remains unchanged even after several dry cleaning or treatments in the washing machine.
  • Spot-welded nonwovens are particularly suitable for many purposes.
  • Pre-needled fleeces which are known per se, are by no means soft or fluffy. They are usually used for needle felt floor coverings and as a back surface for synthetic leather. In the so-called needling process, the needles are pierced into a loose nonwoven, pre-consolidation being achieved which leads to an improvement in the mechanical properties of the nonwoven. The resistance to the influence of laundry and dry cleaning is also improved.
  • Cross-laid nonwovens are preferred as the basic nonwovens.
  • longitudinally laid nonwovens which are consolidated with the aid of hot-melt adhesive fibers, are also suitable.
  • the fleeces are made of staple fiber star and / or continuous fibers.
  • the consolidation is preferably carried out with the aid of a calender which has rollers engraved on at least one side, the temperature of the roller being dependent on the hot-melt adhesive fibers chosen.
  • Homofil fibers are suitable as hot-melt adhesive fibers, e.g. B. nylon 6, copolyester with a melting range around 200 ° C or polybutylene terephthalate.
  • bicomponent fibers e.g. B. Nylon 66 - Nylon 6 or polyethylene terephthalate - copolyester or P ⁇ T-polybutylene terephthalate.
  • the melt fibers are used in a proportion of 10 to 100% by weight, based on the weight of the total fiber mass. It is thus possible to use a fleece composed exclusively of thermoplastically softenable fibers, and also a fleece composed of hot-melt adhesive fibers and co-fibers, e.g. B. synthetic fibers, such as known polyester, polyamide or polyacrylonitrile fibers. However, semi-synthetic or natural fibers or mixtures of different types of fibers can also be used.
  • Spot-bonded nonwovens are preferred in all cases.
  • the point consolidation can take place with the help of a calender with an engraved and smooth roller. It is also possible to pressurize the nonwoven, e.g. B. solidify in a thermofusion furnace, the subsequent fixation between cold smoothing rollers.
  • the desired soft, fluffy and voluminous surface of the needled nonwoven according to the invention is generally obtained optimally with point-strengthened nonwovens. In the case of nonwovens that have been consolidated with smooth rollers, the softness often leaves something to be desired. In all cases, however, a very good resistance to washing and dry cleaning is achieved.
  • the needling can be carried out with conventional needle chairs.
  • the needling is done from both sides, expediently with 2 needle chairs with 3000 to 6000 needles / m working width per board, the needles of one needle chair piercing from above and the other needle from below.
  • the penetration depth is variable and depends on the nature of the nonwoven to be needled.
  • the barbs must always penetrate the material so deeply that the desired fluffy surface is created on the cut-out side.
  • the length and density of the fluffy surface depend on the penetration depth, the needle density, the barb shape and the needle size.
  • the process can be carried out very economically. With around 5000 needles / m per board and when using 2 boards on a needle chair or 2 needle chairs with a board of 5000 needles each, very high speeds can be achieved. For example, at 38 punctures / cm 2 with 1,000 needles / m working width, it is possible to achieve a speed of 24 m / min.
  • the needled nonwoven fabric according to the invention can be post-treated or refined in any way, e.g. B. colored.
  • a fleece is carded on a card with a fiber mixture 20 composed of 30% by weight of nylon 66 with a titer of 1.7 dtex, 20% by weight of polyester with a titer of 3.3 dtex and 50% by weight of a core-sheath bicomponent fiber, which consists of 50% by weight of nylon 6 and 50% by weight of nylon 66 and whose titer is also 3.3 dtex.
  • This fleece is placed on a slatted belt by means of cross layers.
  • the fleece is then calendered with a smooth roller and an engraved roller with dot dimensions of 0.55 x 0.8 x 0.65 mm and 30 dots / cm 2 (dot spacing in the horizontal rows 2.1 mm, in the vertical rows Rows 1.6 mm) welded at a temperature of 225 ° C and a pressure of 50 kp / cm.
  • the outlet speed is 10 m / min
  • the weight of the calendered nonwoven is 60 g / m 2 .
  • the width is 1 m.
  • the nonwoven fabric is then passed through a needle chair with 2 boards with 5000 needles each / with 40 gauge and 3 barbs per edge (barbs per 3 edges).
  • the stroke is 1 000 / min, the penetration depth is 14 mm. All 3 barbs per edge pierce the nonwoven.
  • the throughput speed is 24 m / min, the number of punctures per cm 2 is 38.
  • the result is a fluffy material that is very drapable, soft and voluminous.
  • the light, fluffy material is very resistant to washing and dry cleaning and retains its soft, voluminous structure even after several washes.
  • a nonwoven fabric is produced as in Example 1, but the needling is omitted. The result is a harder, flatter nonwoven that is almost is not capable of being presented, although the fluffy character of the surface is also missing.
  • a fleece is carded on a card with a fiber mixture of 50% of the bicomponent fiber according to Example 1 and 50% by weight of nylon 66, 3.3 dtex. This fleece is then solidified at 225 ° C. under the conditions of Example 1 between two calender rolls, one of which is engraved.
  • the outlet speed is 10 m / min, the weight of the calendered nonwoven 100 g / m 2 and the width 1 m.
  • the nonwoven fabric is then treated with 2 needle chairs, each with 1 board with 5,000 needles / m with 38 gauge and 3 barbs per edge (9 barbs per 3 edges), the needles piercing one time from above and the other time from below.
  • the stroke is 1 000 / min, the penetration depth is 12 mm. All 3 barbs per edge pierce the nonwoven.
  • the throughput speed is 24 m / min.
  • the number of punctures is 38 per cm 2 .
  • a fluffy material is created on both sides with a soft and voluminous handle.
  • a nonwoven fabric is produced under the conditions of Example 4 without being subjected to the post-needling process. This nonwoven is significantly harder and flatter than the needled product. The fluffy surface on both sides is missing.
  • Thickness measurement according to DIN 53 855 Part 1 showed:

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Nonwoven Fabrics (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
EP81101694A 1980-08-28 1981-03-07 Verfahren zur Herstellung eines flauschigen, leichtgewichtigen, weichen Vliesstoffes Expired EP0046834B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81101694T ATE9011T1 (de) 1980-08-28 1981-03-07 Verfahren zur herstellung eines flauschigen, leichtgewichtigen, weichen vliesstoffes.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3032398 1980-08-28
DE3032398A DE3032398C2 (de) 1980-08-28 1980-08-28 Verfahren zur Herstellung eines flauschigen, insbesondere leichtgewichtigen, weichen Vliesstoffes

Publications (2)

Publication Number Publication Date
EP0046834A1 EP0046834A1 (de) 1982-03-10
EP0046834B1 true EP0046834B1 (de) 1984-08-15

Family

ID=6110569

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81101694A Expired EP0046834B1 (de) 1980-08-28 1981-03-07 Verfahren zur Herstellung eines flauschigen, leichtgewichtigen, weichen Vliesstoffes

Country Status (6)

Country Link
US (1) US4451314A (enrdf_load_stackoverflow)
EP (1) EP0046834B1 (enrdf_load_stackoverflow)
JP (1) JPS5742950A (enrdf_load_stackoverflow)
AT (1) ATE9011T1 (enrdf_load_stackoverflow)
DE (2) DE3032398C2 (enrdf_load_stackoverflow)
ES (1) ES505055A0 (enrdf_load_stackoverflow)

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US20080113152A1 (en) * 2006-11-14 2008-05-15 Velcro Industries B.V. Loop Materials
WO2008154303A1 (en) * 2007-06-07 2008-12-18 Velcro Industries B.V. Needling loops into carrier sheets
WO2008154300A1 (en) * 2007-06-07 2008-12-18 Velcro Industries B.V. Anchoring loops of fibers needled into a carrier sheet
WO2013028251A1 (en) 2011-08-25 2013-02-28 Velcro Industries B.V Hook-engageable loop fasteners and related systems and methods
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CN108179550B (zh) * 2018-03-13 2020-09-08 苏州多瑈新材料科技有限公司 一种超柔蓬松的轻质长丝非织造复合材料及其制备方法
JP7237142B2 (ja) * 2018-08-03 2023-03-10 スリーエム イノベイティブ プロパティズ カンパニー 再ロフトスパンボンドウェブを含むエアフィルタ媒体、並びにその製造方法及び使用方法
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DE1635494B2 (de) * 1967-04-27 1976-06-10 Fa. Carl Freudenberg, 6940 Weinheim Nadelvliesteppich und verfahren zu dessen herstellung
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JPS5335623A (en) * 1976-09-16 1978-04-03 Gou Tetsukoushiyo Kk Apparatus and method to crush regenerate and recover pouring gate runner weir and feed head

Also Published As

Publication number Publication date
EP0046834A1 (de) 1982-03-10
ATE9011T1 (de) 1984-09-15
DE3032398C2 (de) 1984-04-19
JPS5742950A (en) 1982-03-10
DE3165487D1 (en) 1984-09-20
US4451314A (en) 1984-05-29
JPS6240458B2 (enrdf_load_stackoverflow) 1987-08-28
ES8206687A1 (es) 1982-08-16
ES505055A0 (es) 1982-08-16
DE3032398A1 (de) 1982-03-04

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