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DE9213273U1 - Agricultural fleece made of nonwoven webs for covering plant crops - Google Patents

Agricultural fleece made of nonwoven webs for covering plant crops

Info

Publication number
DE9213273U1
DE9213273U1 DE9213273U DE9213273U DE9213273U1 DE 9213273 U1 DE9213273 U1 DE 9213273U1 DE 9213273 U DE9213273 U DE 9213273U DE 9213273 U DE9213273 U DE 9213273U DE 9213273 U1 DE9213273 U1 DE 9213273U1
Authority
DE
Germany
Prior art keywords
fleece
agricultural
webs
agricultural fleece
strips
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 - Lifetime
Application number
DE9213273U
Other languages
German (de)
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.)
Silver Plastics GmbH and Co KG
Original Assignee
Silver Plastics GmbH and Co 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 Silver Plastics GmbH and Co KG filed Critical Silver Plastics GmbH and Co KG
Priority to DE9213273U priority Critical patent/DE9213273U1/en
Publication of DE9213273U1 publication Critical patent/DE9213273U1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G13/00—Protection of plants
    • A01G13/30—Ground coverings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/40—Applying molten plastics, e.g. hot melt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
    • B29C65/4815—Hot melt adhesives, e.g. thermoplastic adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/50—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like
    • B29C65/5057—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding using adhesive tape, e.g. thermoplastic tape; using threads or the like positioned between the surfaces to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
    • B29C66/133—Fin-type joints, the parts to be joined being flexible
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/22—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being in the form of recurring patterns
    • B29C66/221—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being in the form of recurring patterns being in the form of a sinusoidal wave
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/435—Making large sheets by joining smaller ones or strips together
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/729—Textile or other fibrous material made from plastics
    • B29C66/7294—Non woven mats, e.g. felt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/52—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive
    • B29C65/524—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive by applying the adhesive from an outlet device in contact with, or almost in contact with, the surface of the part to be joined
    • B29C65/525—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the way of applying the adhesive by applying the adhesive from an outlet device in contact with, or almost in contact with, the surface of the part to be joined by extrusion coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/08—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
    • B29K2105/0854—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns in the form of a non-woven mat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/70—Agricultural usage or equipment

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Protection Of Plants (AREA)
  • Nonwoven Fabrics (AREA)

Description

G 92 076 G92076

BeschreibungDescription

Silver-Plastics GmbH & Co KG 5Silver-Plastics GmbH & Co KG 5

5210 Troisdorf5210 Troisdorf

Agrarvlies aus Vliesbahnen zum Abdecken von PflanzenkulturenAgricultural fleece made of nonwoven webs for covering plant crops

Die Neuerung bezieht sich auf ein licht-, luft- und feuchtigkeitsdurchlässiges Agrarvlies mit einem Flächengewicht von 10 bis lOOg/qm zum Abdecken von Pflanzenkulturen zum Schutz gegen Witterungseinflüsse, wie Frost, Austrocknung, auf Basis von Filamenten und/oder Fasern aus thermoplastischen Kunststoffen, das aus mindestens zwei einzelnen Vliesbahnen zusammengesetzt ist, die im Verbindungsbereich mittels eines zwischen überlappende Randstreifen der miteinander zu verbindenden Vliesbahnen eingebrachten strangförmigen Verbindungsmittels aus thermoplastischem Kunststoff, Klebemittel, Schmelzkleber o. dgl. haftfest verbunden sind.The innovation relates to a light, air and moisture permeable agricultural fleece with a surface weight of 10 to 100g/m² for covering plant cultures to protect against weather influences such as frost, drying out, based on filaments and/or fibers made of thermoplastic synthetic materials, which is composed of at least two individual fleece webs which are firmly bonded in the connection area by means of a strand-shaped connecting agent made of thermoplastic synthetic material, adhesive, hot melt adhesive or similar inserted between overlapping edge strips of the fleece webs to be connected to one another.

Vliese, Gewebe, Gewirke und Folien aus thermoplastischen Kunststoffen zum Abdecken von Pflanzenkulturen für den Obst- und Gemüseanbau, Blumen usw. zum Schutz gegen Frost, Austrocknung sind seit langem bekannt und als einschichtige oder mehrschichtige Produkte beispielsweise in der EP 0304 899 Al beschreiben. 2Q Agrarvliese mit verstärkten Außenrändern werden in DE 3922 058, DE-GM 9110Nonwovens, fabrics, knitted fabrics and films made of thermoplastics for covering plant crops for fruit and vegetable cultivation, flowers, etc. to protect against frost and drying out have been known for a long time and are described as single-layer or multi-layer products, for example in EP 0304 899 Al. 2Q Agricultural nonwovens with reinforced outer edges are described in DE 3922 058, DE-GM 9110

990 und DE-GM 9111 254 beschrieben.990 and DE-GM 9111 254.

Agrarvliese werden in Bahnenform auf Rollen gewickelt zum Einsatz gebracht und dann auf entsprechende Länge vor Ort geschnitten. Je nach Anwendungsfall können Agrarvliese eine Breite bis zu 12 m und mehr aufweisen. Derartig breite Agrarvliese werden aus einzelnen Vliesbahnen zusammengesetzt, die längs ihrer Ränder miteinander haftfest verbunden werden, wie z. B. in der DE 4024 252 Al beschrieben.Agricultural fleeces are used in the form of webs wound onto rolls and then cut to the appropriate length on site. Depending on the application, agricultural fleeces can be up to 12 m wide or more. Agricultural fleeces of this width are made up of individual fleece webs that are firmly bonded together along their edges, as described in DE 4024 252 Al, for example.

Die Agrarvliese werden üblicherweise wegen ihrer großen Breite aus zwei oder mehr Vliesbahnen zusammengesetzt, die an ihren überlappenden Rändern miteinander verbunden werden. Als Vliesbahnen werden bevorzugt Spinnvliese aus Filamenten und /oder Microfasern aus synthetischen Polymeren verwendet, die durch Ausziehen von schmelzflüssigen Massen von synthetischem Polymer aus Spinndüsen hergestellt und durch einen von Kühlluft durchströmten Kühlschacht geführt gegeb. mechanisch mittels Walzen gestreckt und auf einem Ablegeförderband zu einem Wirrfaservlies abgelegt werden und anschließend beispielsweise beim Durchlaufen von Prägewalzen unter Anwendung von Wärme verfestigt und mustermäßig bereichsweise die Filamente und /oder Fasern dabei miteinander durch Anschmelzen verschweißt werden - Thermobonding. Verfahren zum Herstellen derartiger Spinnvliese aus thermoplastischen Kunststoffen, die als Agrarvliese einsetzbar sind, sind beispielsweise in der DE-PS 3603 814, der DE-OS 2014 240, der DE-PS 3400 847 oder US-PS 3338 992 oder US-PS 3509 009 oder US-PS 3755 527 oder US-PS 3692 618 oder US-PS 3978 185 oder 3849 241 u. a. beschrieben.Because of their large width, agricultural fleeces are usually made up of two or more fleece webs that are connected to one another at their overlapping edges. Spunbonds made of filaments and/or microfibers made of synthetic polymers are preferred as fleece webs. These are produced by drawing molten masses of synthetic polymer from spinnerets and guided through a cooling shaft through which cooling air flows, stretched mechanically using rollers and laid down on a laying conveyor belt to form a random fiber fleece and then solidified, for example, by passing through embossing rollers using heat, and the filaments and/or fibers are welded together in a patterned manner in certain areas by melting - thermobonding. Processes for producing such spunbonded nonwovens from thermoplastics, which can be used as agricultural nonwovens, are described, for example, in DE-PS 3603 814, DE-OS 2014 240, DE-PS 3400 847 or US-PS 3338 992 or US-PS 3509 009 or US-PS 3755 527 or US-PS 3692 618 or US-PS 3978 185 or 3849 241 and others.

Für das Handling und die Gebrauchstüchtigkeit des. Agrarvl<e.ses ist auch eine möglichst hohe Festigkeit und Reißfestigkeit der Verbindungsnähte der Vliesbahnen untereinander von Bedeutung. Die Verbindungsnähte werden bisher als mehr oder weniger breite gerade parallel zu den Rändern der Bahnen verlaufende Nähte ausgebildet. Der Neuerung liegt die Aufgabe zugrunde, das Ausreißen von Agrarvliesen im Bereich der Verbindungsnähte beim Handling zu vermeiden und die Reißfestigkeit der Verbindungsnähte zu erhöhen.For the handling and usability of the agricultural fleece, it is also important that the connecting seams between the fleece webs are as strong and tear-resistant as possible. The connecting seams have previously been designed as more or less wide, straight seams running parallel to the edges of the webs. The innovation is based on the task of preventing agricultural fleeces from tearing in the area of the connecting seams during handling and of increasing the tear resistance of the connecting seams.

Diese Aufgabe wird gemäß der Neuerung für Agrarvliese der gattungsgemäßen Art dadurch gelöst, daß die von dem strangförmigen Verbindungsmittel im Verbindungsbereich der Vliesbahnen gebildete Verbindungsnaht wellenförmig verlaufend angeordnet ist.According to the innovation for agricultural fleeces of the generic type, this task is solved by the fact that the connecting seam formed by the strand-like connecting means in the connecting area of the fleece webs is arranged in a wave-like manner.

Erfindungsgemäß wird dadurch eine größere Verbindungsfläche auch für strangförmige Verbindungsnähte geschaffen, wodurch die Festigkeit, insbesondere die Reißfestigkeit und Ausreißfestigkeit im Nahtbereich gegenüber nur gerade verlaufenden strangförmigen Nähten gesteigert werden kann. Erfindungsgemäß bevorzugt ist eine sinusförmig gewellt verlaufende Verbindungsnaht, die mit ausreichendem Abstand vom Rand der Vliesbahn verläuft. Eine bevorzugte Ausbildung der Verbindungsnaht ist den kennzeichnenden Merkmalen der Ansprüche 7 und 8 entnehmbar. Das neuerungsgemäße Agrarvlies ist bevorzugt gemäß den kennzeichnenden Merkmalen des Anspruches 2 aus mindestens zwei einzelnen Vliesbahnen, die im Verbindungsbereich mittels eines zwischen überlappende Randstreifen der miteinander zu verbindenden Vliesbahnen eingebrachten strangförmigen Verbindungsmittels aus dem thermoplatischenAccording to the invention, this creates a larger connecting surface for strand-shaped connecting seams, whereby the strength, in particular the tear resistance and tear resistance in the seam area can be increased compared to only straight strand-shaped seams. According to the invention, a sinusoidally wavy connecting seam is preferred, which runs at a sufficient distance from the edge of the nonwoven web. A preferred design of the connecting seam can be found in the characterizing features of claims 7 and 8. The agricultural fleece according to the invention is preferably made of at least two individual nonwoven webs, which are connected in the connecting area by means of a strand-shaped connecting means made of the thermoplastic material, which is inserted between overlapping edge strips of the nonwoven webs to be connected to one another.

?&ldquor; Kunststoff, aus dem die Vliesbahnen bestehen, haftfest verbunden sind, ? &ldquor; Plastic, from which the fleece webs are made, are firmly bonded,

zusammengesetzt.composed.

Des weiteren ist vorgesehen, die Verbindungsnähte der aneinanderstoßenden Vliesbahnen, die zu dem Agrarvlies zusammengefügt werden, ebenfalls homogen auszuführen, insbesondere durch Verschweißen. Hierbei ist zum Erhöhen der Festigkeit der Verbindungsnähte vorgesehen als Verbindungsmittel den gleichen thermoplastischen Kunststoff aus dem die Vliesbahn besteht, einzusetzen, wobei dieser in thermoplasifizierter erwärmter Form zwischen die einander überlappenden Bereiche der aneinanderstoßenden Vliesbahnen eingebracht wird und diese dann zusammengedrückt werden. Hierbei dringt das Verbindungsmittel zwischen und um die Filamente der Vliesbahnen ein und bewirkt durch Verschmelzen mit diesen eine haftfeste homogene und hohe Festigkeit aufweisende Verbindungsnaht.Furthermore, the connecting seams of the abutting nonwoven webs, which are joined together to form the agricultural fleece, are also to be made homogeneous, in particular by welding. In order to increase the strength of the connecting seams, the same thermoplastic material from which the nonwoven web is made is used as the connecting agent, whereby this is introduced in a thermoplasticized, heated form between the overlapping areas of the abutting nonwoven webs and these are then pressed together. The connecting agent penetrates between and around the filaments of the nonwoven webs and, by fusing with them, creates a firmly adhering, homogeneous and highly strong connecting seam.

Zur weiteren Verbesserung des Handlings des Agrarvlieses kann dies ebenfalls gemäß den kennzeichnenden Merkmalen des Anspruches 4 mit verstärkten Außenrändern, insbesondere in Längserstreckung der Vliesbahnen, ausgerüstet sein.. Bevorzugt sind die Verstärkungsstreifen und die Vliesbahnen des Agrarvlieses homogen miteinander verbunden, insbesondere durch Verschweißen der Kunststoffe miteinander. Diese haftfeste Verbindung kann bevorzugt ebenfalls durch Prägen im erwärmten thermoplastifizierten Zustand der Kunststoffolie des Verstärkungsstreifens und/oder des Vlieses erfolgen, diese Verbindungsweise wird auch als Thermobonding bezeichnet.To further improve the handling of the agricultural fleece, this can also be equipped with reinforced outer edges, in particular in the longitudinal extension of the fleece webs, in accordance with the characterizing features of claim 4. The reinforcing strips and the fleece webs of the agricultural fleece are preferably connected to one another homogeneously, in particular by welding the plastics together. This adhesive connection can preferably also be made by embossing in the heated, thermoplasticized state of the plastic film of the reinforcing strip and/or the fleece; this method of connection is also referred to as thermobonding.

Hierbei werden die Filamente des Vlieses und/oder die Oberfläche des Verstärkungsstreifens plastifiziert und mittels Prägewalzen beim Durchlaufen einesThe filaments of the fleece and/or the surface of the reinforcement strip are plasticized and embossed by means of embossing rollers as they pass through a

Walzenspaltes miteinander in Kontakt gebracht, wobei die Filamente bzw. Fasern * des Verstärkungsstreifens und die Filamente des Agrarvlieses aneinandergedrücktroller gap, whereby the filaments or fibres * of the reinforcement strip and the filaments of the agricultural fleece are pressed together

und hierbei homogen miteinander verschweißt werden.and are welded together homogeneously.

Bei Einsatz von hydrophoben thermoplastischen Kunststoffen, wie Polyolefinen, für das Agrarvlies, das Verbindungsmittel und gegeb. die Verstärkungsstreifen ist eine zusätzliche hydrophobe Ausrüstung des Agrarvlieses nicht erforderlich. Bevorzugt sind das Agrarvlies bzw. die zum Herstellen des Agrarvlieses eingesetzten Vliesbahnen, das Verbindungsmittel und die Verstärkungsstreifen auf Basis des jeweils gleichen thermoplastischen Kunststoffes hergestellt. Damit ist ein problemloses Recycling von Abfallmaterial möglich. Als bevorzugter thermoplastischer Kunststoff wird für das Agrarvlies, das Verbindungsmittel und den Verstärkungsstreifen Polypropylen eingesetzt, wobei hierunter sowohl die Homo- als auch Copolymere des polypropylene zu verstehen sind, die sich durch Schmelzspinnen zu non wovens mit Endlos-Filamenten und/oder Microfasern verarbeiten lassen. Es ist aber auch möglich, die Agrarvliese auf Basis von thermoplastischen Poyestern, Polyamiden, Polyethylen und/oder Copolymeren hiervon und gegebenenfalls Abmischungen miteinander verträglicher thermoplastischer Kunststoffe herzustellen.When using hydrophobic thermoplastics, such as polyolefins, for the agricultural fleece, the connecting agent and, if applicable, the reinforcing strips, additional hydrophobic treatment of the agricultural fleece is not required. Preferably, the agricultural fleece or the fleece webs used to produce the agricultural fleece, the connecting agent and the reinforcing strips are made from the same thermoplastic. This makes it possible to easily recycle waste material. The preferred thermoplastic for the agricultural fleece, the connecting agent and the reinforcing strip is polypropylene, whereby this includes both the homo- and copolymers of polypropylene, which can be processed by melt spinning into nonwovens with continuous filaments and/or microfibers. However, it is also possible to produce the agricultural fleeces on the basis of thermoplastic polyesters, polyamides, polyethylene and/or copolymers of these and, if necessary, mixtures of compatible thermoplastics.

Wirtschaftlich und preiswert herstellbare Agrarvliese in Bahnenform mit Breiten bis zu etwa 12 m können aus Vliesbahnen aus Endlosfilamenten und/oder Microfasern aus Polypropylen mit einem Flächengewicht von etwa 10 bis 25 g/qm oder auch mehr hergestellt werden. Als Verstärkungsstreifen können Vliese aus Polypropylen mit einem Flächengewicht von etwa 10 bis 50 g/qm oder Folien aus PolypropylenEconomically and inexpensively produced agricultural fleeces in web form with widths of up to 12 m can be made from fleece webs made of continuous filaments and/or microfibers made of polypropylene with a surface weight of around 10 to 25 g/m² or even more. Fleeces made of polypropylene with a surface weight of around 10 to 50 g/m² or films made of polypropylene can be used as reinforcement strips.

Q mit einer Dicke von ca. 15 bis 30 &mgr;, gegeb. in gelochter Ausführung eingesetztQ with a thickness of approx. 15 to 30 μ, used in perforated design

werden. Der Verstärkungsstreifen sollte eine Breite von etwa 15 bis 60 cm aufweisen. Vorteilhafte Ausgestaltungen der Neuerung sind den kennzeichnenden Merkmalen der Unteransprüche entnehmbar.The reinforcing strip should have a width of about 15 to 60 cm. Advantageous embodiments of the innovation can be found in the characterizing features of the subclaims.

Die Amplitude und Frequenz der Wellung der Verbindungsnaht ist bei einer Herstellung der Verbindungsnaht mittels eines extrudierten Kunststoffstranges, wie 5 in der DE 4024 252 Al beschrieben, leicht veränderbar durch Anpassung bzw.The amplitude and frequency of the corrugation of the connecting seam can be easily changed by adaptation or by means of an extruded plastic strand, as described in DE 4024 252 A1.

Verändern an die Geschwindigkeit des Bahnenvorschubs der Vliesbahnen.Change the speed of the web feed of the nonwoven webs.

Die Neuerung wird in der Zeichnung an Ausführungsbeispielen erläutert.The innovation is explained in the drawing using examples.

Es zeigen:Show it:

Figur 1 in Agrarvlies in Aufsicht mit flachliegendem ÜberlappungsbereichFigure 1 in agricultural fleece in plan view with flat overlap area

Figur 2 das Agrarvlies nach Figur 1 in VorderansichtFigure 2 the agricultural fleece according to Figure 1 in front view

Figur 3, 4 Agrarvlies mit Überlappung mit einseitiger Ausrichtung der
Randstreifen in zwei TeilansichtenFigure 3, 4 Agricultural fleece with overlap with one-sided alignment of the
Edge strip in two partial views

Figur 5 eine schematische Darstellung einer VerbindungsnahtFigure 5 is a schematic representation of a connecting seam

Figur 6 eine vergrößerte Darstellung der Verbindungsnaht zweierFigure 6 is an enlarged view of the connecting seam of two

Vliesbahnen im QuerschnittNonwoven webs in cross section

In der Figur 1 und 2 ist das aus drei Vliesbahnen 10, 20, 30 zusammengesetzte Agrarvlies 100 mit durch haftfest verbundene Verstärkungsstreifen 2 aus dem gleichen Vlies wie die Vliesbahnen verstärkten Außenrändern parallel zur Längserstreckung des Agrarvlieses, s. Pfeil P, schematisch auszugsweise dargestellt. Da Vliese gemäß den vorgenannten Druckschriften, hergestellt durch Ausspinnen von Endlosfilamenten und/oder Microfasern im Meltblown-Verfahren (Schmelzblasen), in der Regel nur bis zu Breiten von etwa 3 m hergestellt werden, ist es erforderlich, Agrarvliese größerer Breiten aus mehreren Vliesbahnen zusammenzusetzen. Für das Agrarvlies nach Figur 1 sind beispielsweise drei Vliesbahnen 10, 20, 30 vorgesehen, die durch Verbindungsnähte 1, die in Längserstreckung der Vliesbahnen in gewellter Form verlaufen, miteinander in einem Verbindungsbereich aus den einander überlappenden Randstreifen 101, 202In Figures 1 and 2, the agricultural fleece 100 composed of three fleece webs 10, 20, 30 with outer edges reinforced by firmly bonded reinforcement strips 2 made of the same fleece as the fleece webs parallel to the longitudinal extension of the agricultural fleece, see arrow P, is shown schematically in extracts. Since fleeces according to the aforementioned publications, produced by spinning out continuous filaments and/or microfibers using the meltblown process, are generally only produced up to widths of around 3 m, it is necessary to assemble agricultural fleeces of larger widths from several fleece webs. For the agricultural fleece according to Figure 1, for example, three fleece webs 10, 20, 30 are provided, which are connected to one another by connecting seams 1, which run in a corrugated form along the length of the fleece webs, in a connecting area made up of the overlapping edge strips 101, 202

und 201, 302 der benachbarten Vliesbahnen verbunden sind.
10and 201, 302 of the adjacent fleece webs.
10

Die Verbindungsnaht 1 weist dann im Endzustand eine Breite von bevorzugt etwa 1,5 bis 3 mm auf.In the final state, the connecting seam 1 then has a width of preferably about 1.5 to 3 mm.

Die Verbindungsnaht 1 wird durch Einbringen eines thermoplastifizierten extrudierten Kunststoffstranges oder -bandes zwischen die einander überlappenden Randstreifen der Vliesbahnen in wellenförmigem, wie sinusförmigem oder mehr zickzackförmigem, langwelligem oder kurzwelligem Verlauf hergestellt, wobei die Wärme des Verbindungsmittels ausreicht, um eine haftfeste Verbindung nach Art einer Haftschweißung mit den Vliesbahnen herzustellen. Die Festigkeit der Verbindung wird durch äußere Druckanwendung erhöht und gleichzeitig eine gleichmäßige Verbindung erreicht.The connecting seam 1 is produced by inserting a thermoplasticized extruded plastic strand or tape between the overlapping edge strips of the fleece webs in a wave-shaped, such as sinusoidal or more zigzag-shaped, long-wave or short-wave course, whereby the heat of the connecting agent is sufficient to produce a strong bond in the manner of an adhesive weld with the fleece webs. The strength of the bond is increased by applying external pressure and at the same time a uniform bond is achieved.

Die Verbindungsnaht 1 kann entweder wie in Figur 1 und 2 dargestellt, in der Ebene der Vliesbahnen mit übereinander geschobenen Randstreifen überlappend ausgeführt sein oder aber gemäß Figur 3 und 4 durch einseitige Ausrichtung der überlappenden Randstreifen auf eine Seite der Vliesbahnen.The connecting seam 1 can either be designed to overlap in the plane of the nonwoven webs with edge strips pushed over one another, as shown in Figures 1 and 2, or according to Figures 3 and 4 by one-sided alignment of the overlapping edge strips on one side of the nonwoven webs.

In Figur 5 ist die wellenförmige Ausbildung der Verbindungsnaht 1 ausschnittweiseIn Figure 5, the wave-shaped formation of the connecting seam 1 is shown in detail

5 näher erläutert. Der Abstand a der Verbindungsnaht 1 vom Rand der Vliesbahnen5. The distance a of the connecting seam 1 from the edge of the fleece webs

10, 20 sollte mindestens 1 bis 2 cm, oder mehr betragen. Das gilt auch für die Überlappungsverbindung nach Figur 1. Die Länge c der Wellungen kann je nach gewünschter Festigkeit und in Abhängigkeit vom Vliesgewicht zwischen etwa 5 bis 12 cm betragen bei einer Amplitude b der Wellung von etwa 0,5 bis 1,5 cm.10, 20 should be at least 1 to 2 cm, or more. This also applies to the overlap connection according to Figure 1. The length c of the corrugations can be between about 5 and 12 cm, depending on the desired strength and the weight of the fleece, with an amplitude b of the corrugation of about 0.5 to 1.5 cm.

In der Figur 6 ist in vergrößerter Darstellung eine Verbindungsnaht 1 der Vliesbahnen 10, 20 für ein Agrarvlies beispielsweise nach Figur 1 und 2 dargestellt. Das Verbindungsmittel wird hierbei in strangförmiger linsenförmiger Form zwischen die beiden überlappenden Randstreifen 102, 201 der aneinandergrenzenden Vliesbahnen 10 und 20 in Längserstreckung wellenförmig verlaufend eingebracht, und zwar in plastifizierter Form, beispielsweise unmittelbar aus einer Schneckenstrangpresse extrudiert. Der noch heiße plastifizierteFigure 6 shows an enlarged view of a connecting seam 1 of the nonwoven webs 10, 20 for an agricultural fleece, for example according to Figures 1 and 2. The connecting means is introduced in a strand-like, lens-shaped form between the two overlapping edge strips 102, 201 of the adjacent nonwoven webs 10 and 20 in a wavy longitudinal direction, in plasticized form, for example extruded directly from a screw extruder. The still hot plasticized

5 Verbindungsstrang wird hierbei auf die Vliesbahn 20 aufgebracht und dann der5 connecting strand is applied to the fleece web 20 and then the

Randstreifen der Vliesbahn 10 aufgedrückt oder gleichzeitig zwischen die Vliesbahnen 10, 20 beim Durchlaufen eines Walzenspaltes eingebracht. Durch den noch plastifizierten Kunststoff des Verbindungsmittels werden die Filamente und/oder Fasern der Vliesbahnen 10 und 20 im anliegenden Bereich angeschmolzen und es wird ein haftfester Verbund durch Verschweißen erreicht. DasEdge strips of the nonwoven web 10 are pressed onto it or are simultaneously inserted between the nonwoven webs 10, 20 when passing through a roller gap. The filaments and/or fibers of the nonwoven webs 10 and 20 are melted in the adjacent area by the still plasticized plastic of the connecting means and a strong bond is achieved by welding. The

Verbindungsmittel fur die Verbindungsnalit 1 wird bevorzugt auf» dem gleichen *■ thermoplastischen Kunststoff wie die Filamente und/oder Fasern der VliesbahnenConnecting means for the connecting material 1 is preferably made of the same *■ thermoplastic material as the filaments and/or fibres of the nonwoven webs

gemacht, so daß das Agrarvlies 100 in seiner Gänze aus einem einheitlichen Kunststoff besteht und voll recyclebar ist.made so that the Agrarvlies 100 consists entirely of a uniform plastic and is fully recyclable.

Darüber hinaus ist es auch möglich, dem Verbindungsmittel ein Farbmittel c zuzusetzen, so daß die damit hergestellte Verbindungsnaht farbig, z. B. rot, blau,In addition, it is also possible to add a colorant c to the connecting material so that the connecting seam produced with it is colored, e.g. red, blue,

gelb, grün gegenüber dem durchscheinenden Vlies aus hellen durchsichtigen bis opaken Filamenten/Fasern abgesetzt ist.yellow, green contrasts with the translucent fleece made of light transparent to opaque filaments/fibres.

Zur Verbesserung der Witterungsbeständigkeit werden den fur die Herstellung des Agrarvlieses eingesetzten Kunststoffen noch UV-Absorber u./o. geeignete Stabilisatoren handelsüblicher Art zugesetzt.
10To improve weather resistance, UV absorbers and/or suitable commercially available stabilizers are added to the plastics used to produce the agricultural fleece.
10

Claims (8)

G 92 076 SchutzansprücheG 92 076 Protection claims 1. Licht-, luft- und feuchtigkeitsdurchlässiges Agrarvlies mit einem Flächengewicht von 10 bis 100 g/qm zum Abdecken von Pflanzenkulturen zum Schutz gegen Witterungseinflüsse, wie Frost, Austrocknung, auf Basis von Filamenten und/oder Fasern aus thermoplastischen Kunststoffen, das aus mindestens zwei einzelnen Vliesbahnen zusammengesetzt ist, die im Verbindungsbereich mittels eines zwischen überlappende Randstreifen der miteinander zu verbindenden Vliesbahnen eingebrachten strangförmigen Verbindungsmittels aus thermoplastischem Kunststoff, Klebemittel, Schmelzkleber oder dergleichen haftfest verbunden sind, dadurch gekennzeichnet, daß die von dem strangförmigen Verbindungsmittel im Verbindungsbereich der Vliesbahnen (10, 20, 30) gebildete Verbindungsnaht (1) wellenförmig verlaufend angeordnet ist.1. Light, air and moisture permeable agricultural fleece with a basis weight of 10 to 100 g/m² for covering plant cultures to protect against weather influences such as frost, drying out, based on filaments and/or fibers made of thermoplastic synthetic materials, which is composed of at least two individual fleece webs which are firmly connected in the connecting area by means of a strand-shaped connecting means made of thermoplastic synthetic material, adhesive, hot melt adhesive or the like introduced between overlapping edge strips of the fleece webs to be connected to one another, characterized in that the connecting seam (1) formed by the strand-shaped connecting means in the connecting area of the fleece webs (10, 20, 30) is arranged in a wave-like manner. 2. Agrarvlies nach Anspruch 1,2. Agricultural fleece according to claim 1, dadurch gekennzeichnet, daß das Agrarvlies aus mindestens zwei einzelnen Vliesbahnen zusammengesetzt ist, die im Verbindungsbereich mittels eines zwischen überlappende Randstreifen der miteinander zu verbindenden Vliesbahnen eingebrachten strangförmigen Verbindungsmittels aus dem thermoplastischen Kunststoff, aus dem die Vliesbahnen bestehen, haftfest verbunden sind. characterized in that the agricultural fleece is composed of at least two individual fleece webs which are firmly connected in the connection area by means of a strand-shaped connecting means made of the thermoplastic material from which the fleece webs consist, which is introduced between overlapping edge strips of the fleece webs to be connected to one another. 3. Agrarvlies nach einem der Ansprüche 1 oder 2,3. Agricultural fleece according to one of claims 1 or 2, dadurch gekennzeichnet, daß Vliesbahnen (10, 20, 30) aus Endlosfilamenten und/oder Microfasern aus Polypropylen mit einem Flächengewicht von etwa 10 bis 25 g/qm eingesetzt sind. characterized in that nonwoven webs (10, 20, 30) made of continuous filaments and/or microfibers made of polypropylene with a basis weight of approximately 10 to 25 g/m² are used. 4. Agrarvlies nach Anspruch 1,4. Agricultural fleece according to claim 1, ?c. dadurch gekennzeichnet, daß parallel zur Längserstreckung des Agrarvlieses (100) ?c . characterized in that parallel to the longitudinal extension of the agricultural fleece (100) im Bereich der einander gegenüberliegenden Außenränder Verstärkungsstreifen (2) aus einem Vlies aus Fasern und/oder Filamenten aus thermoplastischem Kunststoff und/oder ein Verstärkungsstreifen (2) aus einer Folie aus thermoplastischem Kunststoff haftfest mit dem Agrarvlies verbunden ist.in the area of the opposing outer edges, reinforcement strips (2) made of a fleece made of fibers and/or filaments made of thermoplastic material and/or a reinforcement strip (2) made of a film made of thermoplastic material are firmly bonded to the agricultural fleece. 5. Agrarvlies nach Anspruch 4,5. Agricultural fleece according to claim 4, dadurch gekennzeichnet, daß das Agrarvlies und die Verstärkungsstreifen und das Verbindungsmittel für die Verbindungsnaht auf Basis des jeweils gleichen thermoplastischen Kunststoffes hergestellt sind und die Verstärkungsstreifen mit dem Agrarvlies mustermäßig verschweißt sind. characterized in that the agricultural fleece and the reinforcing strips and the connecting means for the connecting seam are made on the basis of the same thermoplastic material and the reinforcing strips are welded to the agricultural fleece in a pattern. 6. Agrarvlies nach einem der Ansprüche 4 bis 5,6. Agricultural fleece according to one of claims 4 to 5, 5 dadurch gekennzeichnet, daß die Verstärkungsstreifen (2) eine Breite von etwa 155 characterized in that the reinforcing strips (2) have a width of about 15 bis 60 cm aufweist.up to 60 cm. 7. Agrarvlies nach einem der Ansprüche 1 bis 6,7. Agricultural fleece according to one of claims 1 to 6, dadurch gekennzeichnet, daß die von dem Verbindungsmittel gebildete Verbindungsnaht (1) in Längserstreckung des Verbindungsbereichs der Vliesbahnen (10, 20, 30) gleichmäßig gewellt ist, wobei die maximale Amplitude (b) der Wellung der Längsachse der Verbindungsnaht (1) 0,5 bis 1,5 cm, die Länge (c) der Wellung bis 12 cm und der minimale Abstand (a) der Wellung von dem Rand der Vliesbahnen bis 2 cm beträgt. characterized in that the connecting seam (1) formed by the connecting means is uniformly corrugated in the longitudinal extension of the connecting region of the nonwoven webs (10, 20, 30), the maximum amplitude (b) of the corrugation of the longitudinal axis of the connecting seam (1) being 0.5 to 1.5 cm, the length (c) of the corrugation being up to 12 cm and the minimum distance (a) of the corrugation from the edge of the nonwoven webs being up to 2 cm. 8. Agrarvlies nach einem der Ansprüche 1 bis 7,8. Agricultural fleece according to one of claims 1 to 7, dadurch gekennzeichnet, daß die Breite (d) der von dem Verbindungsmittel gebildeten Verbindungsnaht etwa 1,0 bis 4,0 mm beträgt. characterized in that the width (d) of the connecting seam formed by the connecting means is approximately 1.0 to 4.0 mm.
DE9213273U 1992-10-02 1992-10-02 Agricultural fleece made of nonwoven webs for covering plant crops Expired - Lifetime DE9213273U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE9213273U DE9213273U1 (en) 1992-10-02 1992-10-02 Agricultural fleece made of nonwoven webs for covering plant crops

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Application Number Priority Date Filing Date Title
DE9213273U DE9213273U1 (en) 1992-10-02 1992-10-02 Agricultural fleece made of nonwoven webs for covering plant crops

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998002299A1 (en) * 1996-07-16 1998-01-22 Naturembal Supply material for machine manufacturing upholstery product
WO2000030428A1 (en) * 1998-11-25 2000-06-02 Daios Asterios D Plastic sheet for total ground covering
US6534148B1 (en) 1995-04-19 2003-03-18 Naturembal S.A. Machine for making cushioning dunnage product, stock material for feeding such machine and method
WO2005015979A1 (en) * 2003-08-07 2005-02-24 Wondermesh Limited Crop protection netting

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6534148B1 (en) 1995-04-19 2003-03-18 Naturembal S.A. Machine for making cushioning dunnage product, stock material for feeding such machine and method
WO1998002299A1 (en) * 1996-07-16 1998-01-22 Naturembal Supply material for machine manufacturing upholstery product
FR2751267A1 (en) * 1996-07-16 1998-01-23 Naturembal Sa MATERIAL FOR SUPPLY OF MACHINE FOR MANUFACTURE OF UPHOLSTERY
US5766736A (en) * 1996-07-16 1998-06-16 Naturembal S.A. Stock material for feeding machines for making dunnage products
WO2000030428A1 (en) * 1998-11-25 2000-06-02 Daios Asterios D Plastic sheet for total ground covering
WO2005015979A1 (en) * 2003-08-07 2005-02-24 Wondermesh Limited Crop protection netting

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