WO2009074688A1 - Film pour silo - Google Patents

Film pour silo Download PDF

Info

Publication number
WO2009074688A1
WO2009074688A1 PCT/EP2008/067469 EP2008067469W WO2009074688A1 WO 2009074688 A1 WO2009074688 A1 WO 2009074688A1 EP 2008067469 W EP2008067469 W EP 2008067469W WO 2009074688 A1 WO2009074688 A1 WO 2009074688A1
Authority
WO
WIPO (PCT)
Prior art keywords
film
plastic material
granules
silage
roughness
Prior art date
Application number
PCT/EP2008/067469
Other languages
German (de)
English (en)
Inventor
Klaus Böck
Original Assignee
Boeck Klaus
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 Boeck Klaus filed Critical Boeck Klaus
Priority to DE112008003361T priority Critical patent/DE112008003361B4/de
Publication of WO2009074688A1 publication Critical patent/WO2009074688A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
    • A01F25/00—Storing agricultural or horticultural produce; Hanging-up harvested fruit
    • A01F25/13—Coverings
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
    • A01F25/00—Storing agricultural or horticultural produce; Hanging-up harvested fruit
    • A01F25/14—Containers specially adapted for storing
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
    • A01F15/00—Baling presses for straw, hay or the like
    • A01F15/07—Rotobalers, i.e. machines for forming cylindrical bales by winding and pressing
    • A01F15/071—Wrapping devices
    • A01F2015/0745—Special features of the wrapping material for wrapping the bale

Definitions

  • the invention relates to a film and a method for producing a film having a rough surface structure.
  • silage can also be used as a preservation method for renewable resources and as an energy source for biogas plants.
  • green feeds are suitable, for example grass, maize, clover, alfalfa, field bean, oats and beet leaves.
  • plant material is airtight sealed, compacted and stored. Silage mistakes can make the silage inedible. As a result, for example, the animals that are fed with the silage, get sick.
  • yeasts can multiply by consuming too much air and consume the sugars and lactic acid bacteria present in the silage.
  • incompatible mold infests the silage.
  • silage foil must maintain the silage for a long time under different climatic conditions.
  • the silage foil should form a water barrier and oxygen barrier.
  • crows and other birds land on a silage foil, destroying the silage foil with their feet.
  • Far away birds often chop the foil with their beaks. This allows air, and thus also oxygen, and moisture to penetrate into the silage, and greatly affect the quality of the same.
  • Crow birds destroy the roof foils from below, even in large football stadiums. Crow birds are large disease transmitters of over 50 disease diseases and can endanger the public about their excrement.
  • the object of the invention is therefore to provide a film and a method for producing the film, which overcomes the disadvantages of the prior art, in particular prevents birds with their beaks chop the film broken.
  • the object is achieved by a film having a first surface and a second surface, wherein at least one of the two surfaces diffusely reflects electromagnetic radiation in the visible wavelength range.
  • a foil that is at least one such Side prevents a mirror image, possibly even in the form of a greatly reduced color intensity, is generated for a viewer.
  • the diffusely reflecting surface may have or have a roughness or roughness structure for producing the diffuse reflection greater than 150 nm, preferably 400 nm, in particular greater than 800 nm, for example greater than 1600 nm, in particular the roughness or the roughness structures being less than 10000 nm, preferably less than 5000 nm, for example less than 3000 nm is or are.
  • the roughness may be an average roughness R a .
  • the object is achieved by a film having a first surface and a second surface, in which electromagnetic radiation impinging on one of the two surfaces is diffusely reflected in the visible wavelength range.
  • the diffuse reflection can be generated within the film, in particular by means of an in particular rough structure located in the film.
  • electromagnetic radiation in the visible wavelength range is reflected specularly at an angle of incidence of less than 15 degrees, preferably less than 10 degrees, to the particular smooth surface of the film.
  • the roughness or the roughness structures of the structure located in the film for producing the diffuse reflection may be greater than 150 nm, preferably 400 nm, in particular greater than 800 nm, for example greater than 1600 nm, in particular the roughness or the roughness structures being smaller than 10000 nm, preferably less than 5000 nm, for example, less than 3000 nm is or are.
  • a diffuse reflection can also be regarded as scattering.
  • the diffuse reflection is measured in relation to the regular or specular reflection. That is, if all the light rays are reflected regularly, ie, the angle of incidence is equal to the angle of reflection relative to a normal on the surface, 0% of the rays impinging on the film would be diffusely reflected, whereas if no light ray is reflected specularly 100 percent of the rays diffusely reflected.
  • the surface of the film reflects about 50 to about 100 percent of the rays diffusely, more preferably about 75 to about 100 percent, preferably about 90 to about 100 percent.
  • a diffuse reflection can be generated, for example, by the surface having a greater roughness relative to wavelengths in the visible wavelength range.
  • the rays are diffusely reflected in many different directions, in particular, the surface of the foil essentially corresponds to an ideally diffusely reflecting surface piece, for example a Lambertian surface.
  • the wavelength range refers to the wavelength range visible to birds, especially crows.
  • birds can no longer reflect on the surface and therefore no longer attack your mirror image on the slide. It is thereby avoided that, for example, silage films of crow birds are hacked and thus become unusable.
  • Stadiums for example, for sporting events, the roof is covered with a film according to the invention can thus be kept crow-free.
  • birds have four different cone types in their eyes that have pigments that each have an absorption maximum at wavelengths of 370nm, 445nm, 508nm and 565nm.
  • humans have only three different cone types in the eye, each with an absorption maximum of 424nm, 530nm and 560nm. Birds can therefore see ultraviolet radiation or a wavelength spectrum of about 300 to 700nm.
  • An embodiment of the invention is characterized in that a roughness on a surface of the film generates the scattering of the electromagnetic radiation. As a result, different light beams are directed in different directions, so that no mirror image, even with other colors and / or color intensities is generated.
  • the roughness is preferably generated by irregular elevations and subsidence on the surface.
  • the film is impermeable to water.
  • the film may also be gas-impermeable, in particular for oxygen and / or carbon dioxide.
  • the oxygen and / or carbon dioxide permeability is less than 250 cmVmVTag at 0.2 bar and 23 0 C, in particular less than 180 cm7m 2 / day at 0.2 bar pressure difference.
  • the surface of the film reflects electromagnetic radiation to more than about 80 percent, preferably more than 90 percent, in particular radiation having wavelengths from 290 nm to 800 nm, preferably from 300 nm to 700 nm, in particular UV radiation and / or Radiation of visible light.
  • electromagnetic radiation to more than about 80 percent, preferably more than 90 percent, in particular radiation having wavelengths from 290 nm to 800 nm, preferably from 300 nm to 700 nm, in particular UV radiation and / or Radiation of visible light.
  • the film may be a polyolefin film, in particular a polyethylene film.
  • the film can be produced in an extrusion blow molding process.
  • a blown film is particularly tear resistant.
  • An embodiment may be characterized in that the film has a thickness of 10 microns to 800 microns, in particular a thickness of 20 microns to 500 microns.
  • the film may be a silage film.
  • the object is achieved by a silage cover of a film according to the invention.
  • the invention further relates to a covering film for stadiums.
  • the film may be an adhesive film or adhesive film.
  • the object of the invention is further achieved by a method for producing a film with a rough surface structure, wherein a molten plastic is provided, the molten plastic is formed to produce the film and a rough surface structure is produced.
  • the object can be achieved by a method for producing a film having a first surface and a second surface, in which electromagnetic radiation incident on one of the two surfaces is diffusely reflected in the visible wavelength range, wherein a molten plastic is provided, the molten plastic for the production the film is formed and an internal structure for diffuse reflecting the beams is generated.
  • a molten plastic is provided, the molten plastic for the production the film is formed and an internal structure for diffuse reflecting the beams is generated.
  • pigments within a particularly transparent film may diffusely reflect the electromagnetic radiation.
  • the molten plastic for forming the film is shaped through a nozzle for blow molding. This makes it possible to produce a particularly durable film.
  • the molten plastic is molded through a slot die for making the film.
  • a rough surface structure is produced on the film by the nozzle or slot die.
  • a nozzle or slot die for example, can have moving parts and slides to produce an irregular surface structure.
  • the plastic material in particular the plastic granules, pigments and / or additives are added, in particular surface properties of the pigments and / or additives are changed, preferably before admixing. This is particularly advantageous in the case of scattering of electromagnetic radiation within the film.
  • the rough surface structure is produced by application of powder, fibers and / or granules.
  • the powder, the fibers and / or the granules can be sprayed onto a surface of the not yet solidified, molten plastic, in particular after shaping by the nozzle or Slit nozzle to be dispensed.
  • the film has powder, fibers and / or granules on one of its surfaces, wherein in particular the roughness or roughness structures on the surface for producing the diffuse reflection are greater than 150 nm, preferably 400 nm, in particular greater than 800 nm, for example greater than 100 nm have or have, wherein, in particular, the roughness or the roughness structures is less than 10000 nm, preferably less than 5000 nm, for example less than 3000 nm.
  • the powder, the fibers and / or the granules is mixed with an adhesive to produce a mixture, wherein the mixture is discharged onto a surface of the plastic, in particular on the already solidified plastic.
  • plastic material for producing the rough surface structure is taken out of the solidified plastic material. This can be done with scraping and / or scraping tools.
  • the solidified film is compacted selectively, in particular with a sandblast and / or with an embossing device.
  • the film has a multiplicity of punctiform depressions on one of its surfaces, wherein the roughness or the roughness structures for generating the diffuse reflection have or have greater than 150 nm, preferably 400 nm, in particular greater than 800 nm, for example greater than 1600 nm. wherein, in particular, the roughness or the roughness structures is less than 10000 nm, preferably less than 5000 nm, for example less than 3000 nm.
  • the diffuse reflection properties of the film are produced by irradiation and / or temperature action in the not yet solidified film or in an already solidified film.
  • the solidified and / or the still deformable, no longer flowing plastic material for producing the rough surface structure and / or a scattering in the interior of the film causing structure is irradiated and / or heated.
  • the film can be selectively heated and deformed by means of a laser, so that the desired surface structure is produced.
  • a film according to the invention or a silage cover according to the invention is produced by the process according to the invention. Consequently, the surface structure of the produced film is so rough that electromagnetic rays in the visible Wavelength range scattered disorderly at least partially reflected by a surface with the surface structure.
  • Fig. 1 a cross section of a traveling silo
  • FIG. 2 is a schematic perspective view of a silage bale
  • Fig. 3 a schematic drawing of a plant for producing a film according to the invention.
  • Fig. 4 is a schematic view of another embodiment of a plant for producing the film according to the invention.
  • Fig. 5 a schematic view of another embodiment of a system for producing the film according to the invention.
  • FIG. 1 shows a schematic view of a cross section of a traveling silo 10.
  • the silo 10 is bounded on both sides by walls 12, 14 and bottom 16.
  • Silage 20 is covered with a silage foil 22.
  • FIG. 2 shows a schematic view of a silage bale 30.
  • the Silageundballen 30 is completely filled with silage.
  • the Silageundballen 30 is completely covered with a silage film 32.
  • Silage bales are usually left on the fields where they have been wrapped.
  • Silage bales can also have other shapes, for example, cuboid or tubular bales are used.
  • silage films 22, 32 produce substantially no mirror image when viewing the film.
  • inventive Foil may also be used for other purposes to prevent birds from chopping the foil with their beaks.
  • Fig. 3 is a schematic view of a system is shown to perform a method with which a film according to the invention is produced.
  • 1 is a blown film line 100.
  • a granulate for producing the film such as, for example, a polyethylene granulate
  • the granules are compacted in an extruder 104 and heated until the polyethylene, or another base material for the film according to the invention reaches a blowing head 106.
  • a plurality of extruders 104 with the respective funnels 102 may be connected to the die 106 to produce a film having layers of different material.
  • the liquefied material is blown up to form a tubular structure 108, on the way up the film material slowly cools until it is flattened at a guide roller 110, deflected and possibly pressed with a second, not shown, roller.
  • both sides of the tubular film material 108 is glued together, which is achieved in that the film material is not completely cooled during deflection by the guide roller 110.
  • the produced film can be brought into its final shape, whereby it can pass through one or more further rollers 112. At the end of the film production process, it is rolled onto a roll 114.
  • the film can be deformed at several points or additional material can be applied to the surface of the film.
  • powder, fibers and / or granules can be applied to the not yet stiffened film.
  • An inorganic material can be applied, for example titanium dioxide.
  • the titanium dioxide or inorganic material is ground and treated to adjust the surface properties of the material, for example to become hydrophilic, in order to achieve better adhesive properties of the film.
  • the powder, the fibers and / or the granules are applied with a spraying device 116 on the tubular upwardly moving foil material 108.
  • the foil is not completely solidified after the deflecting roll 110, powder, fibers can still be there by means of a spraying device 118 and / or granules, such as pigments, are applied to the film.
  • a spraying device 118 / or granules, such as pigments, are applied to the film.
  • the powder, the fibers and / or the granules can be sprayed onto the film by means of an adhesive. It can also be applied with a separate device first adhesive to the already solidified film, and then subsequently the powder, the fibers and / or the granules.
  • a structure with elevations and depressions is generated mechanically on the already solidified film.
  • an embossing roll 120 may be used that imprints the protuberances and depressions to form the disorderly scattering film.
  • material can also be removed from the film by the embossing roller 120 in order to produce a non-reflective film.
  • a sandblast 122 which is directed onto the film before winding.
  • the generated disordered scattering film has a thickness of approximately 150 microns.
  • the system for producing a film according to the present invention like the blown film line 100, has a funnel 202, into which a plastic granulate, such as a PE granulate, is introduced.
  • the plastic granules are heated in an extruder 204 and fed into a nozzle head 206, which delivers the film material 208 already in a flat, thin layer.
  • the sheet material is transported over cooled transport rollers 210 to be cooled.
  • the film material solidified to form the film is rolled up on a roll 214.
  • a powder, granules and / or fibers such as, for example, pigments
  • the powder, granules and / or fibers may comprise an inorganic material which has preferably been ground and / or surface-treated prior to application to the film 208 in order to make the inorganic material hydrophilic.
  • the powder, the fibers and / or the granules can be mixed with an adhesive to be applied to the already-erstwhile film by means of a spray device 216.
  • first an adhesive then the powder, the fibers and / or the granules may be applied, and preferably subsequently surface treated to become hydrophilic.
  • the pattern is embossed by means of an embossing roller 220 on the already solidified or in a particular embodiment not yet completely solidified film.
  • both the film or the film material 208 can be pressed permanently or material can be taken out of the film with the embossing roll 220.
  • a sandblasting machine (not shown) may be used to create recesses on the film.
  • first inorganic pigments are mixed with a plastic granulate, such as a polyethylene granulate, before they are poured into a hopper 302a of a plant 300 for producing the film.
  • a plastic granulate such as a polyethylene granulate
  • the pigments for example titanium dioxide, can be surface-treated so that the inorganic pigments can interact well with the first plastic material.
  • the plastic material 308a After the first plastic material 308a has been extruded with pigments from the plastic granules with the pigments contained therein, as long as the first plastic material 308a is still deformable and no longer flows, the plastic material is passed between two soft rubber rollers 310 which have a gap width which is less than the pigment size so that the pigments on the surface of the plastic material can be visible.
  • the first plastic material 308a in this process step already has a foil shape.
  • the first plastic material 308a is applied to a second plastic material 308b by means of two rollers 312 having desired properties such as water impermeability, stretchability, tear resistance and / or air impermeability.
  • the second plastic material 308b is made of polyethylene, for example.
  • the resulting film which is rolled up on a roll 316, thus comprises a film layer with pigments and a film layer without pigments.
  • the method of Fig. 5 can also be realized with blow molding in order to obtain particularly tear-resistant films.
  • the plant 300 may include a device for heating the film instead of a soft rubber roller. It is also possible with the methods explained with reference to FIGS. 3 and 4 to produce multilayer films, wherein only one of the films diffusely reflects light rays.
  • the film according to the invention thus does not have a surface which scatters light disorderly, so that birds, when landed on the film, do not recognize each other and thus do not chop the film with their beaks.
  • This is particularly advantageous in silage films because silage should not be compromised with additional oxygen or water to produce proper silage.

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  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Laminated Bodies (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)

Abstract

L'invention se rapporte à un film doté d'une première surface et d'une seconde surface, au moins l'une des deux surfaces réfléchissant de manière diffuse un rayonnement électromagnétique dans la plage de longueurs d'onde du visible. L'invention se rapporte en outre à un film doté d'une première surface et d'une seconde surface, sur lequel un rayonnement électromagnétique incident dans la plage de longueurs d'onde du visible est réfléchi de manière diffuse sur l'une des deux surfaces. L'invention se rapporte en outre à un film d'ensilage. L'invention se rapporte, pour finir, à un procédé pour fabriquer un film comprenant les étapes consistant à fournir une matière plastique fondue et à mouler la matière plastique fondue pour fabriquer le film, ce qui permet d'obtenir une structure de surface brute.
PCT/EP2008/067469 2007-12-12 2008-12-12 Film pour silo WO2009074688A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112008003361T DE112008003361B4 (de) 2007-12-12 2008-12-12 Abdeckfolie für Silo

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007059721A DE102007059721A1 (de) 2007-12-12 2007-12-12 Abdeckfolie für Silo
DE102007059721.7 2007-12-12

Publications (1)

Publication Number Publication Date
WO2009074688A1 true WO2009074688A1 (fr) 2009-06-18

Family

ID=40456968

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/067469 WO2009074688A1 (fr) 2007-12-12 2008-12-12 Film pour silo

Country Status (2)

Country Link
DE (2) DE102007059721A1 (fr)
WO (1) WO2009074688A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009052948B4 (de) * 2009-11-12 2013-05-29 Rkw Se Silageabdeckung
DE202022000499U1 (de) 2022-02-26 2022-04-26 Institut für Agrar- und Stadtökologische Projekte an der Humboldt-Universität zu Berlin (IASP) Rotlicht reflektierende Mehrschichtfolie für die optimierte Pflanzenanzucht

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03112414A (ja) * 1989-09-28 1991-05-14 Achilles Corp サイロ用合成樹脂フィルム
DE19708776C1 (de) * 1997-03-04 1998-06-18 Fraunhofer Ges Forschung Entspiegelungsschicht sowie Verfahren zur Herstellung derselben
WO1999067080A1 (fr) * 1998-06-23 1999-12-29 First Green Park Pty Ltd. Orientation de film visant a ameliorer ses proprietes barriere et sa stabilite aux rayons u.v.
EP0989443A2 (fr) * 1998-09-22 2000-03-29 Fuji Photo Film Co., Ltd. Couche antiréfléchissante et son procédé de préparation

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1004000A4 (fr) * 1990-03-30 1992-09-08 Solvay Pellicule en resine a base de copolymere d'ethylene et d'acetate de vinyle dont au moins une des faces presente un aspect rugueux et procede pour sa realisation.
DE4311978C1 (de) * 1993-04-06 1994-04-21 Frank Prof Dr Mirtsch Verfahren zur Beulverformung dünner Wände und Folien
ES2134083B1 (es) * 1994-12-09 2000-05-01 Sumitomo Chemical Co Pelicula de resina de poliolefinas de cubrimiento y metodo para cultivo de plantas.
DE10228855B4 (de) * 2001-06-28 2011-11-17 Hueck Folien Gesellschaft M.B.H. Witterungsbeständiger Folienverbund
DE102007053106B3 (de) * 2007-11-05 2008-10-09 Orbita-Film Gmbh Silierfolie

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03112414A (ja) * 1989-09-28 1991-05-14 Achilles Corp サイロ用合成樹脂フィルム
DE19708776C1 (de) * 1997-03-04 1998-06-18 Fraunhofer Ges Forschung Entspiegelungsschicht sowie Verfahren zur Herstellung derselben
WO1999067080A1 (fr) * 1998-06-23 1999-12-29 First Green Park Pty Ltd. Orientation de film visant a ameliorer ses proprietes barriere et sa stabilite aux rayons u.v.
EP0989443A2 (fr) * 1998-09-22 2000-03-29 Fuji Photo Film Co., Ltd. Couche antiréfléchissante et son procédé de préparation

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 199125, Derwent World Patents Index; AN 1991-182938, XP002521304 *

Also Published As

Publication number Publication date
DE102007059721A1 (de) 2009-06-18
DE112008003361B4 (de) 2013-07-04
DE112008003361A5 (de) 2011-06-22

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