EP1662859A1 - Film plastique pour recouvrir le sol avec formation de bords - Google Patents

Film plastique pour recouvrir le sol avec formation de bords

Info

Publication number
EP1662859A1
EP1662859A1 EP04734562A EP04734562A EP1662859A1 EP 1662859 A1 EP1662859 A1 EP 1662859A1 EP 04734562 A EP04734562 A EP 04734562A EP 04734562 A EP04734562 A EP 04734562A EP 1662859 A1 EP1662859 A1 EP 1662859A1
Authority
EP
European Patent Office
Prior art keywords
weldings
folding
plastic film
stamp
width
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.)
Withdrawn
Application number
EP04734562A
Other languages
German (de)
English (en)
Inventor
Asterios D. Daios
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1662859A1 publication Critical patent/EP1662859A1/fr
Withdrawn legal-status Critical Current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—Protecting plants
    • A01G13/02—Protective coverings for plants; Coverings for the ground; Devices for laying-out or removing coverings
    • A01G13/0256—Ground coverings
    • A01G13/0268—Mats or sheets, e.g. nets or fabrics
    • A01G13/0275—Films

Definitions

  • the invention refers to a plastic film for ground covering with formed edges along its sides that is destined for agricultural use.
  • Each formed edge is folded twice towards the same direction, in such a manner that the first folding (4) has width (b) less than (c) of the second folding (5) and preferably to half the width of the latter.
  • the superimposed parts of each formed edge are welded to each other with successive weldings along its length, preferably transverse and in such a manner that the first folding as well as the second are welded to main body of the plastic film but not to each other.
  • the first folding is welded to the main body with successive stamp- weldings that can be of any shape and preferably oval or circles having not larger dimensions than half the width (b) of the first welding and are located preferably halfway between two successive transverse weldings.
  • weight insertion pockets are formed, that also have an opening for inserting the weight in each pocket, almost equal to the length of each pocket.
  • the stamp- weldings pull the first folding towards the main body of the plastic film where it clings in order to close the weight insertion openings and trap soil in the pockets.
  • the pockets can be as easily emptied during the use of the film as they can be filled, because the film cannot hinder the soil from exiting the pockets and as a result the pockets have to be refilled during the harvesting period.
  • FIG. 1 illustrates such a design of a plastic film and figures 2a-2f show several details of such designs.
  • the initial plastic film has any width (a) and length (1) and can be produced employing any of the known production methods.
  • the two edges (2) along its length are folded to width (b) towards the mid-section of the plastic film leading to a residual length of (a-2b).
  • the new edges (3) are folded again to a width (c) towards the mid-section of the film and in the same direction as before, so that (c) is larger than (b) and preferably about double than the latter so that the width of the end product is equal to a-2b-2c.
  • the formed plastic film is then directed to a welding station where along its formed two-folded edges the film is welded with successive weldings (7i) preferably transverse and at fixed step. These weldings can have any step and any form.
  • transverse weldings (7i) are made in such a fashion that preferably the first (4) and the second (5) foldings are welded onto the main body (1) of the plastic film but not one onto the other (cross-section A- A of Figure 1). This is very important for the proper function of said formed pockets.
  • stamp-welding or a group of stamp-weldings (8) is made that welds only the first folding (4) to the main body (1) of the plastic film and in particular not to its entire length (c) but preferably to less than half the length of it (Detail of figure 1).
  • the stamp-welding (8) during the use of the film will assist the entrapment of the soil. Specifically as the pocket is filled with soil and its volume increases the second folding (5) would be gradually distanced from the main body (1) of the plastic film as well as from the first folding (4) letting each pocket to assume the form of a tubular vault.
  • the stamp-welding can be of any shape such as a circle, oval, square, triangle, rectangle etc.
  • the successive transverse weldings (7i) are simple linear weldings (7.1,
  • Figure 2a or they could be reinforced at their inner end in order to avoid tearing the film at this rather delicate point.
  • the reinforced sections can comprise small horizontal lines (7.2, Figure 2b) or two inclined lines (7.3, Figure 2c) or they can be stamp-weldings (7.4, Figure 2d) etc. and they can be in contact with or at a small distance from the transverse welding.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Protection Of Plants (AREA)

Abstract

L'invention porte sur un film plastique avec formation de bords destiné à recouvrir le sol en agriculture. Chaque bord formé est plié deux fois dans le même sens de manière que le premier pli (4) ait une largeur (b) inférieure (c) au second pli (5), de préférence de la moitié de la largeur de ce dernier. Les parties superposées de chaque bord formé sont soudées les unes autres par des soudures successives (7i) sur la longueur du bord, de préférence en transversale, et de manière que le premier pli (4) ainsi que le second pli (5) soient soudés au corps principal (1) du film plastique, et non l'un à l'autre. En outre, le premier pli (4) est soudé au corps principal (1) par soudures par points (8) pouvant être d'une forme quelconque, et de préférence, ovales ou en forme de cercles dont les dimensions ne sont pas plus grandes que la moitié de la largeur (b) du premier pli (4) et qui sont situées de préférence à mi-chemin entre deux soudures transversales successives (7i). De cette manière, on forme les poches d'insertion de poids qui ont également une ouverture pour insérer le poids dans chaque poche quasiment égale à la longueur de chaque poche. Les soudures par points (8) tirent le premier pli (4) vers le corps principal (1) du film plastique lorsque celui-ci se colle afin de fermer les ouvertures d'insertion de poids et de piéger la terre dans les poches.
EP04734562A 2003-09-10 2004-05-24 Film plastique pour recouvrir le sol avec formation de bords Withdrawn EP1662859A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GR20030100373A GR1007190B (el) 2003-09-10 2003-09-10 Πλαστικο φυλλο εδαφοκαλυψης με διαμορφωμενα ακρα
PCT/GR2004/000030 WO2005022984A1 (fr) 2003-09-10 2004-05-24 Film plastique pour recouvrir le sol avec formation de bords

Publications (1)

Publication Number Publication Date
EP1662859A1 true EP1662859A1 (fr) 2006-06-07

Family

ID=44913600

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04734562A Withdrawn EP1662859A1 (fr) 2003-09-10 2004-05-24 Film plastique pour recouvrir le sol avec formation de bords

Country Status (3)

Country Link
EP (1) EP1662859A1 (fr)
GR (1) GR1007190B (fr)
WO (1) WO2005022984A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2915346B1 (fr) 2007-04-24 2011-08-26 Fiberweb France Sas Nappe de protection avec bords renforces
JP5856005B2 (ja) * 2011-04-26 2016-02-09 宜士 松本 農業用被覆材
CN103518571A (zh) * 2013-10-29 2014-01-22 宁夏农林科学院 防风蚀地膜
PT3047724T (pt) 2015-01-23 2017-10-06 D Daios Asterios Filme plástico para culturas agricolas com bolsas para inserção de peso
EP3456180A1 (fr) 2017-09-13 2019-03-20 Asterios Daios Film plastique pour cultures agricoles avec poches de retenue de poids diaphragmatique

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GR1002872B (el) * 1997-01-10 1998-03-04 Πλαστικο φυλλο εδαφοκαλυψης
WO2000062597A1 (fr) * 1999-04-19 2000-10-26 Daios Asterios D Film plastique avec poches speciales de part et d'autre destinees a recevoir du poids
ES2187225B1 (es) * 1999-11-18 2004-10-01 Reyenvas S.A. Lamina mejorada para el cultivo de esparragos.
WO2002035915A1 (fr) * 2000-11-03 2002-05-10 Daios Asterios D Film plastique comprenant des tubes remplis d'eau et proteges
ATE353551T1 (de) * 2002-04-05 2007-03-15 Bernhard Boeckenhoff Abdeckung für einen spargeldamm
SK2522004A3 (en) * 2002-08-29 2004-12-01 Asterios Daios Plastic film for coverage with loose openings for weight insertion at its edges

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005022984A1 *

Also Published As

Publication number Publication date
GR20030100373A (el) 2005-05-18
GR1007190B (el) 2011-02-09
WO2005022984A1 (fr) 2005-03-17

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