EP1842944B9 - Fil biodégradable - Google Patents

Fil biodégradable Download PDF

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Publication number
EP1842944B9
EP1842944B9 EP07105204A EP07105204A EP1842944B9 EP 1842944 B9 EP1842944 B9 EP 1842944B9 EP 07105204 A EP07105204 A EP 07105204A EP 07105204 A EP07105204 A EP 07105204A EP 1842944 B9 EP1842944 B9 EP 1842944B9
Authority
EP
European Patent Office
Prior art keywords
biodegradable
core material
oder
und
twine
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.)
Active
Application number
EP07105204A
Other languages
German (de)
English (en)
Other versions
EP1842944B3 (fr
EP1842944B1 (fr
EP1842944A3 (fr
EP1842944A2 (fr
Inventor
Karl-Heinz Eispert
Thomas Schönung
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.)
GARNTEC GmbH
Original Assignee
GARNTEC 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 GARNTEC GmbH filed Critical GARNTEC GmbH
Publication of EP1842944A2 publication Critical patent/EP1842944A2/fr
Publication of EP1842944A3 publication Critical patent/EP1842944A3/fr
Application granted granted Critical
Publication of EP1842944B1 publication Critical patent/EP1842944B1/fr
Publication of EP1842944B3 publication Critical patent/EP1842944B3/fr
Publication of EP1842944B9 publication Critical patent/EP1842944B9/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
    • D02G3/04—Blended or other yarns or threads containing components made from different materials
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/36—Cored or coated yarns or threads

Definitions

  • the present patent application relates to a biodegradable yarn of a core material of biodegradable natural fibers and / or chemical fibers and a shell of a biodegradable plastic.
  • Game are used for example in the form of tie cords in hop growing; their use is also in other areas z. B. in viticulture, the construction industry or packaging industry possible.
  • hops from Elsen are used as a climbing aid for hop plants in hop growing.
  • the plant can grow upwards and thus reach the desired heights, while hopping up to about 8 meters.
  • the wires are knotted in the hop garden at the top of a cross wire and just below in the immediate vicinity of the hop plant stuck in the ground.
  • the wire is cut by hand or machine down with the hop plant just above the ground and also topped off with the hop plant.
  • the wire is shredded together with the plant remains of the hop plant and spent on the fields for rotting or rusting.
  • a new hop wire is attached to each hop plant as described above.
  • the hops are currently made of iron, usually of ST 37 and have a round cross section with a diameter of 1.1 and 1.5 mm.
  • the hop plant needs a certain surface roughness on the wire surface in order to be able to hold tight to the wire. In the conventional iron wire mesh, this surface roughness is due to the manufacturing process and resulting flash rust.
  • a first disadvantage is its very high specific gravity.
  • Another disadvantage is that when chopping the wire a very high wear on the chopping knives occurs.
  • hop spikes A particular disadvantage is the so-called "hop spikes".
  • hop farmer drives the shredded material from his farm to the fields with the tractor and wagon with the pieces of iron wire approx. 2 to 5 centimeters long, it regularly happens that such "hop spikes” fall on the road.
  • driving over these "hop spikes” with the car they then drill into the tires and cause high damage.
  • the DE-OS 23 44 221 describes support cords for plants from z. B. polyolefin. A cross-sectional change is to be achieved by a melt fracture induced in the extrusion. However, this leads to strength variations over the length of the string. In addition, although the surface achievable by melt fracture is deformed, it is still smooth so that plants will find insufficient support.
  • the DE 198 00 842 C2 describes a plastic thread, which is formed as a monofilament, wherein the monofilament consists of a polypropylene and is treated on the surface to reduce the surface smoothness, wherein the plastic thread made of biodegradable modified polypropylene and is stretched to increase strength, and wherein the surface of the plastic thread through Profiling and / or chemical and physical processes is reduced.
  • the 1 October 2007 disclosed ES 2 282 021 discloses a recyclable vertical crop support applicable to the attachment of plants in an upright position by means of staples or similar devices and consisting of a braided or twisted cord of paper or cellulose which additionally includes waxes and resins.
  • the waxes may be polyethylene waxes or paraffinic waxes, and the resins may be acrylic resins.
  • the present invention is therefore based on the object to provide an improved yarn with controllable biodegradability and compostability and excellent tensile strength and elongation at break.
  • the present invention thus provides a biodegradable and compostable yarn containing a core material of natural fibers and / or man-made fibers and comprising a shell material of biodegradable and compostable biopolymers.
  • the materials forming the core of the yarn of the invention are those of natural fibers such as cotton, flax, hemp, sisal, jute, coconut, bast, ramie and / or man-made fibers, for example of natural polymers such as e.g. Viscose, cellulose, lyocell and / or Tencel, and fibers of biodegradable and compostable aliphatic and / or partially aromatic polyester amides and / or aliphatic and / or partially aromatic polyesters.
  • natural fibers such as cotton, flax, hemp, sisal, jute, coconut, bast, ramie and / or man-made fibers
  • natural polymers such as e.g. Viscose, cellulose, lyocell and / or Tencel
  • the core fibers are selected from natural fibers consisting of cotton, flax (linen), hemp, sisal, cellulose and / or jute.
  • the materials forming the core are particularly preferably natural fibers of sisal, since sisal has a natural water-repellent action.
  • biodegradable and compostable means biodegradable and compostable yarns according to the invention which are completely biodegradable and compostable according to DIN EN 13 432.
  • the yarn according to the invention disintegrates after a certain, predeterminable time and is converted under composting conditions by the bacteria and microbes in the soil into natural waste products, so that in this case even a natural fertilization is achieved.
  • the time required for the yarn of the present invention to fully degrade is limited (e.g., by the weight fraction of shell material, based on the total weight of the yarn of the invention), i.e., adjustable.
  • the yarn according to the invention can be defined in terms of its degradation time to each individual application.
  • the tear strength of the yarn according to the invention can also be adjusted to any particular application.
  • acids can also be used in the form of derivatives such as, for example, acid chlorides or esters, both as monomers and as oligomeric esters.
  • the yarn according to the invention has the advantage that by the use of natural fibers, such as cotton, flax, hemp, sisal, jute, ramie and coconut, and / or man-made fibers of natural polymers, such as viscose (a definition of these terms eg in Römpp Chemie Lexikon, 9th edition, Thieme Verlag, Stuttgart , under the relevant keywords) and the envelope material from biopolymers because of the biodegradability of the yarn according to the invention a soil contamination is avoided, whereby the planting period is increased.
  • the yarn of the present invention is sufficiently durable to ensure its durability throughout the growing season because it can withstand the rainfall during that time.
  • the biopolymer material forming the shell material can be biopolymeric materials of starch (for example, corn starch, potato starch, wheat starch, rice starch, tapioca starch, sorghum starch, manioc starch, pea starch, modified starches, starch degradation products), cyclodextrins, polylactic acid, biodegradable resins, milk protein, casein , Sugar, vegetable oils, cellulose (for example cellulose acetate), aliphatic and / or (partially) aromatic polyesters (for example those described above), polyhydroxyalkanoates and / or polyvinyl alcohol / starch mixtures.
  • starch for example, corn starch, potato starch, wheat starch, rice starch, tapioca starch, sorghum starch, manioc starch, pea starch, modified starches, starch degradation products
  • cyclodextrins polylactic acid, biodegradable resins, milk protein, casein , Sugar, vegetable oils,
  • the shell material is selected from vegetable biopolymeric materials and / or petroleum-based biopolymeric materials.
  • the shell material is selected, for example, from starch, polylactic acid, cellulose, mixtures of aromatic and aliphatic polyesters and / or polyvinyl alcohol / starch mixtures.
  • These biodegradable and compostable shell materials may further comprise other components, provided that the yarn according to the invention has the complete biodegradability and compostability according to DIN EN 13 432.
  • Such shell materials are commercially available, e.g. under the trade name biomat by Pro-Tech, ECOFLEX by BASF, Materbi by Novamont, Natureflex by Inovia Films, or Biophan by Treofan.
  • the proportion of the biopolymeric shell material, based on the total weight of the yarn according to the invention, is usually 5 to 40 wt .-%, preferably 10 to 30 wt .-%, in particular 15 to 25 wt .-%.
  • the core material of the yarn according to the invention is subjected to one or more of the above-mentioned shell materials.
  • the time period until the onset of the decomposition process of the yarn according to the invention can be precisely controlled in terms of time.
  • the period of time until the onset of the decomposition process of the yarn according to the invention can be adjusted by suitable choice of the composition of the wrapping material, for example the mixing ratio of the wrapping materials used.
  • the shell material preferably comprises a mixture of vegetable and petroleum-based biopolymers in a ratio of 1: 1 to 1: 5, in particular 1: 2 to 1: 4, more preferably 1: 2 to 1: 3.
  • the vegetable biopolymers used may be, for example, starch, cellulose and / or vegetable oils; the petroleum-based biopolymers used are, for example, polyhydroxyalkanoates or polyesters.
  • the shell material consists of a mixture of vegetable biopolymers such as corn starch and petroleum-based biopolymers such as polyhydroxyalkanoates or polyesters in a ratio of 1: 3. This ensures that the yarn according to the invention has a start of decomposition of within six months.
  • the shell material consists of a mixture of vegetable biopolymers such as corn starch and petroleum-based biopolymers such as polyhydroxyalkanoates or polyesters in a ratio of 1: 2. This ensures that the yarn according to the invention has a decomposition start within four months. Other mixing ratios may prolong or shorten the degradation time.
  • the application of the wrapping material to the core material of the yarn according to the invention can be done for example by wrapping, welding, fusing, gluing, machine bonding, shrinking or dip coating.
  • the wrapping material may be wrapped in the form of a film around the core material.
  • the film of the enveloping material may have a thickness in a range between 0.001 and 0.2 mm, preferably in a range of 0.01 to 0.1 mm, in particular in a range of 0.02 to 0.08 mm.
  • an envelope can in another embodiment be made using a tubular film blowing device, wherein the envelope is inflated onto the core material.
  • the yarn according to the invention can be produced, for example, by using textile processing methods known per se, such as spinning, twisting, braiding, crocheting, bobbins, knitting, weaving and / or knitting, for example in the form of staple fiber yarns (spun yarns) ) or filament yarns present core materials of natural fibers and / or man-made fibers of natural polymers are combined or solidified as a fiber, so that a strength of the yarn of the invention of at least 450 N is achieved.
  • textile processing methods known per se such as spinning, twisting, braiding, crocheting, bobbins, knitting, weaving and / or knitting, for example in the form of staple fiber yarns (spun yarns) ) or filament yarns present core materials of natural fibers and / or man-made fibers of natural polymers are combined or solidified as a fiber, so that a strength of the yarn of the invention of at least 450 N is achieved.
  • Lyocell is the generic term for solvent-spun cellulose fibers produced by the NMMO or lyocell process. Lyocell fibers are available, for example, from Lenzing AG and Courtaulds Fibers, Coventry / Great Britain. Tencel fibers are a further development and also available from the company Courtaulds. Tencel is a registered trademark. These fibers have the advantage that their dry strength is higher than any other commercial cellulose staple fiber; when wet, this strength is even more pronounced. Dry, the strength is twice as high as conventional viscose fibers and wet three times as high.
  • the core material can be applied with an adhesive before application of the wrapping material.
  • adhesive material according to the invention are those which combine with the core material and the shell material and are biodegradable.
  • adhesives based on starch or based on polyvinyl alcohol These are known to those skilled in the art and commercially available. For example, the following may be mentioned: starch-based planatol-based adhesives, polyvinyl alcohol-based dispersions, e.g. Helmitin adhesive L 93 / 22-01 from Forbo Helmitin, or the dispersion adhesive Adhesin from Henkel.
  • an adhesive can increase the tensile strength of the yarn according to the invention and improve the bond between the core material and the casing.
  • the adhesive is applied in a proportion of 5 to 30% by weight, based on the weight of the core material.
  • the application amount is in a range of 5 to 20, ideally 7 to 10 wt .-%.
  • the yarn according to the invention can, for example, achieve a tensile strength of at least 500 N and an elongation at break of not more than 4%.
  • the applied adhesive can be firmly incorporated into the core material.
  • the adhesive is pressed into the fibers of the core material using a rope-making machine, whereby the strength of the yarn according to the invention increases significantly.
  • the application of the cladding material to the core material occurs, for example, by melting, A natural roughness develops on the surface of the yarn according to the invention, whereby the plant growth on the yarn according to the invention is improved along.
  • the melting of the shell material according to the invention for example, at temperatures between 50 and 200 ° C, preferably between 80 and 150 ° C, in particular between 100 and 130 ° C, depending on the shell material used.
  • the yarn of the invention may have a variety of geometric shapes, such as round, flat, polygonal, oval, etc. Ideally, however, the yarn of the invention has a round shape.
  • the thickness of the yarn according to the invention may be in a range of 0.5 to 10 mm, preferably 1 to 8 mm, in particular 2 to 6 mm.
  • the yarn of the invention has an S twist. This supports the growth of the plant and can be generated, for example, using a rope machine. In this case, lay lengths in a range of 0.5 to 4 cm, preferably 1 to 3 cm, in particular 1.5 to 2.5 cm have proven to be favorable.
  • sisal cord with a diameter of about 2.5 mm and a basic strength of about 400 N.
  • the sisal cord is unrolled by a flyer from the supply spool and pulled through a glue bath, the excess glue before leaving the glue station of the cord is stripped off.
  • the sisal cord becomes a 2 cm wide and 0.03 mm thick biopolymer Wannerra film WBA 2000 wrapped and pulled through a Nipper and pressed.
  • the wrapped cord is fused together by means of hot air and solidified and, by turning back the cord / rope machine, its final strength of more than 500 N and its roughened surface are obtained.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Biological Depolymerization Polymers (AREA)
  • Materials For Medical Uses (AREA)

Claims (7)

  1. Fil biologiquement dégradable et compostable, qui renferme un matériau d'âme en fibres naturelles et/ou en fibres chimiques et un matériau de gaine en biopolymères biologiquement dégradables et compostables, à la condition que les biopolymères biologiquement dégradables et compostables soient choisis dans le groupe composé de l'amidon, des cyclodextrines, de l'acide polylactique, des résines biologiquement dégradables, de l'albumine du lait, de la caséine, du sucre, des huiles végétales, de la cellulose, des polyesters aliphatiques et/ou (partiellement)aromatiques, des polyhydroxyalcénoates et des mélanges d'alcool polyvinylique/amidon.
  2. Fil suivant la revendication 1, dans lequel le matériau d'âme se compose de sisal.
  3. Fil suivant l'une des revendications 1 et 2, dans lequel le matériau de gaine se compose d'acide polylactique.
  4. Fil suivant l'une des revendications précédentes, dans lequel le pourcentage du matériau de gaine, par rapport au poids total du fil conforme à l'invention, est de 5 à 40% en poids.
  5. Procédé de fabrication d'un fil suivant l'une des revendications 1 à 4 dans lequel, sur une machine de guipage, un matériau d'âme en fibres naturelles et/ou en fibres chimiques est enroulé d'un matériau de gaine en biopolymères biologiquement dégradables et compostables.
  6. Procédé suivant la revendication 5, dans lequel le procédé comprend en outre l'étape de la fusion du matériau de gaine sur le matériau d'âme.
  7. Procédé suivant la revendication 6, dans lequel la fusion s'effectue par application d'air chaud.
EP07105204A 2006-04-07 2007-03-29 Fil biodégradable Active EP1842944B9 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006016538A DE102006016538A1 (de) 2006-04-07 2006-04-07 Biologisch abbaubare Bindegarne

Publications (5)

Publication Number Publication Date
EP1842944A2 EP1842944A2 (fr) 2007-10-10
EP1842944A3 EP1842944A3 (fr) 2008-05-28
EP1842944B1 EP1842944B1 (fr) 2010-05-26
EP1842944B3 EP1842944B3 (fr) 2012-02-08
EP1842944B9 true EP1842944B9 (fr) 2012-07-25

Family

ID=38139803

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07105204A Active EP1842944B9 (fr) 2006-04-07 2007-03-29 Fil biodégradable

Country Status (6)

Country Link
EP (1) EP1842944B9 (fr)
AT (1) ATE469253T1 (fr)
DE (2) DE102006016538A1 (fr)
DK (1) DK1842944T3 (fr)
ES (1) ES2345677T7 (fr)
PT (1) PT1842944E (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10590577B2 (en) 2016-08-02 2020-03-17 Fitesa Germany Gmbh System and process for preparing polylactic acid nonwoven fabrics
US10787310B2 (en) 2010-12-10 2020-09-29 Luigi Lavazza S.P.A. Cartridge for preparing a liquid product
US11441251B2 (en) 2016-08-16 2022-09-13 Fitesa Germany Gmbh Nonwoven fabrics comprising polylactic acid having improved strength and toughness

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DE102008016350A1 (de) 2008-03-29 2009-10-01 Teijin Monofilament Germany Gmbh Bioabbaubare profilierte Monofilamente und deren Verwendung
DE102008016351B4 (de) 2008-03-29 2016-12-29 Perlon Nextrusion Monofil GmbH Verwendung bioabbaubarer Monofilamente im Feld- und Gartenbau
IT1403162B1 (it) 2010-12-14 2013-10-04 Lavazza Luigi Spa "cartuccia per la preparazione di un prodotto liquido"
ITTO20121125A1 (it) 2012-12-21 2014-06-22 Lavazza Luigi Spa Cartuccia per la preparazione di un prodotto liquido e procedimento per realizzarla
ITTO20130146A1 (it) 2013-02-22 2014-08-23 Lavazza Luigi Spa Capsula, macchina e sistema per la preparazione di bevande e procedimento per la realizzazione della capsula
ES2536582B1 (es) * 2013-11-25 2016-03-01 Plàstics Torner, S.L. Atadura de plástico, uso de la atadura y método para atar, reunir o juntar elementos entre sí
AU2015275748B2 (en) 2014-06-18 2019-05-16 Luigi Lavazza S.P.A. Cartridge for preparing a liquid product and method for producing it
AU2015370560B2 (en) 2014-12-22 2019-08-22 Luigi Lavazza S.P.A. Cartridge for the preparation of liquid products
AT520161B1 (de) * 2017-05-09 2020-02-15 Chemiefaser Lenzing Ag Im Meer abbaubare Trägermaterialien
ES1221442Y (es) * 2018-10-03 2019-02-26 Gold Fiber Europe S L Envase biodegradable para alimentos
IT202000015400A1 (it) * 2020-06-26 2021-12-26 Linificio E Canapificio Nazionale S R L Soc Benefit Confezioni per alimenti ed altri prodotti
DE102020124303A1 (de) * 2020-09-17 2022-03-17 Cordenka Innovations GmbH Aufleitschnur
DE102021106840A1 (de) 2021-03-19 2022-09-22 Frowin Puntsch Textiles Erzeugnis und Verwendung des textilen Erzeugnisses

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10787310B2 (en) 2010-12-10 2020-09-29 Luigi Lavazza S.P.A. Cartridge for preparing a liquid product
US10590577B2 (en) 2016-08-02 2020-03-17 Fitesa Germany Gmbh System and process for preparing polylactic acid nonwoven fabrics
US11441251B2 (en) 2016-08-16 2022-09-13 Fitesa Germany Gmbh Nonwoven fabrics comprising polylactic acid having improved strength and toughness

Also Published As

Publication number Publication date
ES2345677T9 (es) 2012-12-26
DE502007003898D1 (de) 2010-07-08
EP1842944B3 (fr) 2012-02-08
ES2345677T3 (es) 2010-09-29
DE102006016538A1 (de) 2007-11-08
ES2345677T7 (es) 2012-06-14
EP1842944B1 (fr) 2010-05-26
ATE469253T1 (de) 2010-06-15
EP1842944A3 (fr) 2008-05-28
DK1842944T3 (da) 2010-08-16
EP1842944A2 (fr) 2007-10-10
PT1842944E (pt) 2010-08-09

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