WO2011057752A2 - Silageabdeckung - Google Patents
Silageabdeckung Download PDFInfo
- Publication number
- WO2011057752A2 WO2011057752A2 PCT/EP2010/006799 EP2010006799W WO2011057752A2 WO 2011057752 A2 WO2011057752 A2 WO 2011057752A2 EP 2010006799 W EP2010006799 W EP 2010006799W WO 2011057752 A2 WO2011057752 A2 WO 2011057752A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- layer
- silo
- cover according
- ethylene
- copolymers
- 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.)
- Ceased
Links
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
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- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/024—Woven fabric
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/028—Net structure, e.g. spaced apart filaments bonded at the crossing points
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
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- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0253—Polyolefin fibres
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
- B32B2264/10—Inorganic particles
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
- B32B2264/10—Inorganic particles
- B32B2264/104—Oxysalt, e.g. carbonate, sulfate, phosphate or nitrate particles
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2270/00—Resin or rubber layer containing a blend of at least two different polymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/712—Weather resistant
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/726—Permeability to liquids, absorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
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- B32B2307/70—Other properties
- B32B2307/732—Dimensional properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B2307/75—Printability
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2410/00—Agriculture-related articles
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- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
- Y10T428/24612—Composite web or sheet
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y10T428/249981—Plural void-containing components
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y10T428/249987—With nonvoid component of specified composition
- Y10T428/249991—Synthetic resin or natural rubbers
- Y10T428/249992—Linear or thermoplastic
- Y10T428/249993—Hydrocarbon polymer
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y10T442/10—Scrim [e.g., open net or mesh, gauze, loose or open weave or knit, etc.]
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- Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Definitions
- the present invention relates to a silage cover.
- the method of ensiling is usually used for many years.
- sliced and possibly chopped green material usually grass or maize, is first compressed and then covered with one or more foils in such a way that lactic acid fermentation as a result of oxygen concentration results in a preserving acidification of the silage.
- Silage can be completely enclosed by foil in tubular or bale-shaped design. This requires special harvesters to produce these units.
- the quantitatively most important and most cost-effective type of silo house consists of green fodder, which is heaped up on the ground to heaps and covered by films.
- silos which are enclosed by concrete walls to the floor and on the side walls, and clearing piles, which have no constructive lateral boundary walls. In both of the latter, hereinafter referred to as Haufwerksilos variants, sealing and covering of the side walls and the surface by the use of plastic films.
- Plastic films which are used in the prior art for sealing and covering of bulk material silos, usually consist predominantly of polyethylene (PE) and copolymers of ethylene and other monomers, such as propylene, butene, propene, hexene, octene, Ethylene vinyl acetate and the like.
- PE polyethylene
- Examples are linear low density polyethylene (PE-LLD), low density polyethylene (PE-LD), high density polyethylene (PE-HD), ethylene vinyl acetate (EVA), ethylene-propylene copolymers (E / P).
- multilayer film or multilayer film is understood as meaning a film whose individual layers are connected to one another directly and in particular without intervening layers of air. Multilayer films are often prepared by coextrusion according to the prior art.
- a layer is to be understood as a structure that can be separated from the other layers by easy removal and that is usually applied in a separate operation.
- German silicia in a second operation is covered.
- the thicknesses of commonly used Unterziehfolien be about 40 ⁇ , while commonly used Silofolien have thicknesses in the range of 100 to 200 pm. According to the current state of the art, these two films are produced separately prepared and placed on a silo separated from each other in two steps consuming. Underlay films and silage films have not been delivered together on a roll, as this is solvable, inter alia, only by high additional technical effort and thus higher costs by rewinding and the film rolls thereby partially reach a high dead weight and the application or interpretation further complicates ,
- an outer cover is often selected according to the prior art for the mechanical protection of the silo above the film cover.
- This outer cover is usually carried out in the form of a silo protection grid, which consists in the prior art of a polyolefinic, preferably a low density polyethylene (HDPE) - or polypropylene (PP) - based, tissue.
- the outer cover has the main function of mechanical protection and weather protection of the underlying silage film.
- the cover may also consist of already used silage films or other similar type elements.
- polyolefinic silage films have comparatively high oxygen permeabilities due to the nonpolar nature of polyolefinic plastics.
- an oxygen permeability of 250 ml / (m 2 d bar) according to DIN 53380-3 at 23 ° C and 50% relative humidity and an oxygen partial pressure of 0.2 bar considered as the upper limit.
- aerobic fermentation processes continue to occur in the silo, leading to spoilage and loss of feed.
- multilayer films with other polymers are known to cover Haufwerksilos known that avoid the problem of high oxygen permeability of polyolefinic films.
- JP 2003276123 A discloses a three-layer film for the bale silage of grass, the outer layers of polyolefinic plastics and the middle layer of aliphatic polyamide.
- DE 102004008085 A1 describes a method for the production of animal feed from biomass, wherein a possible oxygen and airtight packaging is selected.
- Multilayer composite films with a barrier layer, preferably ethylene vinyl alcohol (EVOH) are described, wherein the structure of the composite film should preferably comprise outer layers of polyolefinic plastics with a middle layer of EVOH.
- WO 99/29154 discloses a silo covering of a single or multilayer film containing at least one oxygen-tight layer, preferably of polyamide (PA).
- PA polyamide
- Other usable plastics are ethylene-vinyl alcohol (EVOH), polyvinyl alcohol (PVOH) and mixtures thereof or mixtures with other plastics.
- EVOH ethylene-vinyl alcohol
- PVH polyvinyl alcohol
- Conventional versions of the films are marketed as coextrudates with the construction PE / PA / PE by Bruno Rimini Ltd, GB and provided in the application with a further mechanical protective cover.
- heat-insulating cover sheets for use in agriculture are known, which should have at least one layer of polyamide.
- silage films In addition to the oxygen termination, another essential requirement of silage films is sufficient mechanical durability. In particular, the operator or installer of the heap silo must be able to handle the silo on the silage foil or the outermost cover for inspection purposes. In addition, the cover must go safety bird bite, hail and the like.
- An essential feature of a film that characterizes the mechanical strength has been the dart drop according to EN ISO 7765-1 over the course of time. It has been found in practice a dart drop of at least 300 g, for high-quality silo covers of at least 450 g, as required.
- an at least two-layered silo covering which comprises an inner, first layer facing the silo consisting of an oxygen-impermeable and water-vapor-permeable single-layer or multi-layer plastic film and at least one further layer above it and separated from the inner layer or easily separable or silo self-releasing second layer comprising at least 70% by weight of materials selected from the group consisting of polyethylene, polypropylene, copolymers of ethylene and other vinyl monomers, and copolymers of propylene and other vinyl monomers, the first Layer has an oxygen permeability of at most 500 cm 3 / (m 2 d bar) and a water vapor permeability of at least 5 g / (m 2 d) and in at least one layer a total of at least 50 wt .-% of one or more materials from the group
- polyamide comprising polyamide, copolyamide, polyester, copolyester, polyethylene vinyl alcohol, polyvinyl alcohol and mixtures thereof.
- the oxygen permeability is determined in the context of the present invention according to DIN 53380-3 at 23 ° C and 50% relative humidity, the water vapor permeability according to ISO 15106-3 at 23 ° C and 85% relative humidity.
- the first layer has an oxygen permeability of at most 100 cm 3 / (m 2 d bar) and a water vapor permeability of at least
- the first layer is a single or multilayer film containing in each layer a total of at least 30%, preferably at least 50% and even more preferably at least 70% of one or more materials selected from the group consisting of polyamide, copolyamide, polyester, copolyester , EVOH and PVOH.
- Particularly suitable is a first layer containing in each layer in addition to materials from the group comprising polyamide, copolyamide, polyester, copolyester, EVOH and PVOH, at most 20% and preferably no further polymeric ingredients.
- the first layer in each layer contains a total of at least 50%, more preferably at least 70% and even more preferably at least 90% of one or more of the group comprising polyamide and copolyamide, preferably PA6, PA66, PA6 / 66, PA 6I6T and / or other aliphatic, aromatic or partially aromatic polyamides or copolyamides.
- a first layer in the form of a monolayer or multilayer film which contains in each layer mixtures of PA6 and other polyamides and / or copolyamides, even more preferably mixtures of PA6 and PA6 / 66. It is further preferred that apart from polyamide and copolyamide no further polymeric materials are included.
- the first layer can in one, several or all layers additives such as to increase the stability to UV radiation and / or lubricant and / or mineral antiblock additives for reducing the coefficient of friction of the film surface and / or additives for coloring included.
- the silo according to the invention has proved to be advantageous to lay the silo according to the invention with a higher water content in the first layer, as it is contained in the film after extrusion.
- a moisture content of 2 wt .-% or more, based on the materials contained in the first layer from the group comprising polyamide, copolyamide, polyester, copolyester, EVOH and PVOH.
- the water content may e.g. be introduced via spray nozzles or a water bath during production.
- the thickness of the first layer is advantageously at least 10 pm and at most 200 pm, preferably at least 15 pm and at most 50 pm.
- the width is usually in the range of 6 m to 22 m, preferably about 8 m to 16 m.
- silo cover proves to be favorable with a first layer in the form of a single-layer plastic film.
- the second layer preferably contains low density polyethylene
- LDPE low density polyethylene
- MDPE medium density polyethylene
- HDPE high density polyethylene
- EVA copolymers of ethylene and vinyl acetate
- EMA acrylic acid
- PP polypropylene
- PP heterophasic (block co-PP) or homogeneous (random co-PP) copolymers of propylene and ethylene.
- vinyl monomers those having an ethylene group which are copolymerizable with ethylene.
- ⁇ -olefins having 2 to 12 carbon atoms - eg, ethylene, propylene, butene, pentene, hexene, octene, acrylic acid and their esters, methacrylic acid and their esters, styrene, dienes - eg butadiene, isoprene -, vinyl acetate, cycloolefins - eg norbornene, cyclopentadiene, and
- the second layer may contain mineral fillers such as, but not limited to, calcium carbonate or talc to increase stiffness.
- the second layer may contain additives in the usual amounts, e.g. UV stabilizers and / or lubricants and / or mineral antiblock additives for reducing the coefficient of friction of the film surface and / or additives for coloring the film.
- the second layer is a, preferably extruded, single or multilayer plastic film having a lower water vapor permeability than that of the first layer.
- a water vapor permeability of at most 2.5 g / (m 2 d) is particularly preferred.
- the silage is protected against direct contact with water by condensation, on the other hand, too extensive dehydration of the silo is avoided.
- a thickness between 50 pm and 200 pm, more preferably between 50 and 150 pm and particularly preferably between 60 and 120 pm.
- the second layer is a coated or uncoated fabric or a coated or uncoated mesh or a coated or uncoated nonwoven or a coated or uncoated mesh.
- reusable silo protection grilles made of HDPE or PP can be used expediently. Typical basis weights are in the range from 100 g / m 2 to 400 g / m 2 , preferably from 200 g / m 2 to 350 g / m 2 .
- commercially available reusable tapes made of PP or HDPE are useful. These generally have basis weights in the range from 100 g / m 2 to 600 g / m 2 , preferably from 200 g / m 2 to 400 g / m 2 .
- a second layer in the form of a monolayer or multilayer film as described above is combined with a third layer comprising a coated or uncoated fabric or a coated or uncoated mesh or a coated or uncoated fleece or a coated or uncoated grid as previously described.
- silo covers are preferred in which the first layer rests directly on the silage and either a second layer in the form of a plastic film rests on the first layer, with or without coverage by a grid, fabric, mesh or fleece, or a second layer in the form of a grid, fabric, mesh or fleece rests directly on the first layer, without further layers are provided.
- first layer and the second layer and, if necessary, further layers are rolled together and / or folded so that they in one operation by jointly unrolling and / or unfolding can be applied to the heap silo.
- the second layer is a single or multi-layer plastic film
- This is well known in the art because, for example, in the case of barrier films for packaging, the layers are firmly bonded to one another via adhesion promoters in order to prevent the effect of separability or self-separation.
- the first layer consists of one or more layers containing in each layer mixtures of PA6 and other polyamides and / or copolyamides, even more preferably mixtures of PA6 and PA6 / 66
- the second layer comprises at least 70% of low density polyethylene (LDPE), medium density polyethylene (MDPE), high density polyethylene (HDPE), ethylene and ⁇ -olefin (LLDPE) copolymers, ethylene and vinyl acetate copolymers ( EVA), copolymers of ethylene and acids or acrylates (EMA, EEA, EBA), polypropylene (PP), heterophasic (block-co-PP) or homogeneous (random-co-PP) copolymers of propylene and ethylene.
- LDPE low density polyethylene
- MDPE medium density polyethylene
- HDPE high density polyethylene
- LLDPE ethylene and ⁇ -olefin copolymers
- EVA ethylene and vinyl acetate copolymers
- At least one layer consists of an extruded single or multilayer plastic film with at least one layer containing a foam structure. This is particularly beneficial for the separation of the first and second layers in silo covers made by low coextrusion coextrusion. It is possible to dye one or more layers of the silo cover according to the invention and / or to print and / or with strip-shaped
- the invention also relates to all combinations of the appropriate, favorable and preferred embodiments, insofar as they are not mutually exclusive.
- the information "about” or “approx.” in conjunction with a numerical indication, means that at least 10% higher or lower values or 5% higher or lower values and in any case 1% higher or lower values are included.
- a backing film of 80% PA 6/66 (Ultramid® C33 L 01, BASF SE) and 20% PA 6 (Ultramid B40, BASF SE) was in a thickness of 18 pm and a width of 8 m on a conventional plant for the production of blown films extruded as monofilm.
- This first layer was coated with a commercially available silage film polyolefinic the company RKW SE, sold under the trade name wepelen® Siloplus, with a thickness of 80 ⁇ ⁇ ⁇ and a width of 8 m combined as the second location.
- a film as in Example 1 was prepared by coextrusion wherein the first layer in a thickness of about
- Example 1 made of PA 8 pm as the first or inner layer facing the silo, as in Example 1 made of PA consisted and the second and third layer as a second, the silo facing away in 80 ⁇ thickness analogous to a commercial polyolefinic silage film made of polyethylene.
- a 3-layer coextruded film was made in 8 m width at which the first layer (inner layer) of the second layer (middle and outer layer) can be separated by peeling or by corresponding physicochemical processes on the Over time, separate the silo from each other.
- Example 1 As a comparison, the isolated use of the underlying film of Example 1 was used.
- a film such as the under-liner in Example 1 was blow-extruded to a thickness of 35 ⁇ m and used as a single silo cover as in Example 3.
- Another comparative film used was a commercial polyolefinic underpacking film from RKW SE, marketed under the trade name wepelen® Silo 40, with a thickness of 40 ⁇ m and a width of 8 m.
- Another comparative film used was the commercially available polyolefinic silage film, which forms the second layer in Example 1, but with a thickness of 150 ⁇ m.
- the thickness according to DIN 53370 the basis weight: according to EN ISO 2286-2
- the water vapor permeability according to ISO 15106-3 at 23 ° C and 85% relative humidity
- the Oxygen permeability according to DIN 53380-3 at 23 ° C and 50% relative humidity
- the dart drop according to ISO 7765-1 method A for film combinations determined by adding the individual values.
- silo covers were applied to a heap silage of maize silage. In addition to the physical properties measured in the laboratory, it was observed to what extent the surface of the silage is free of moisture esters due to condensation on the inside of the silo cover. All
- the silo according to the invention according to Example 1 or 2 has the considerable advantage of a lower oxygen permeability and a high mechanical strength.
- a surprisingly low reduction of the film thickness and thus the use of resources Compared with commercial pure polyolefinic Siloabdeckungen according to Comparative Examples 6 and 7, the silo according to the invention according to Example 1 or 2 has the considerable advantage of a lower oxygen permeability and a high mechanical strength.
- the silo according to the invention according to Example 1 or 2 has the advantage of material recyclability and therefore also lower resource consumption. Moreover, the formation of condensate under the silo cover is surprisingly effectively avoided in the application in the silo, so that the formation of mold is sustainably prevented.
- the silage does not dry out in the cover according to the invention, so that the quality of the silage is also increased.
- the silo according to the invention has the required properties. All layers of the cover can be made separately, separable or separating.
- the silo cover is easy to recycle, because the different polymers are in separate, not firmly connected layers. It is oxygen-impermeable, which is essential for the production of high-quality silages. It prevents mold by moisture ester by means of only water vapor barrier layer, at the same time also a dehydration of the silage is prevented. It has only about 30-70% of the mass of a comparable standard coverage and is thus much easier to handle. It is much easier for the user to interpret, since the films can be designed in a single operation and the cover due to the material reduction (see Example 1 or 2 with Ex. 7) has significantly less mass. It is sufficient with a dart drop of at least 300 g, typically at least 450 g and more, the mechanical requirements of the practice of a silo cover.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Laminated Bodies (AREA)
- Storage Of Harvested Produce (AREA)
Abstract
Description
Claims
Priority Applications (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NZ599638A NZ599638A (en) | 2009-11-12 | 2010-11-09 | Silage cover |
| RU2012123715/05A RU2553911C2 (ru) | 2009-11-12 | 2010-11-09 | Покрытие для силоса |
| CA2780189A CA2780189C (en) | 2009-11-12 | 2010-11-09 | Silage cover |
| ES10781427T ES2913784T3 (es) | 2009-11-12 | 2010-11-09 | Cubierta de silo |
| EP10781427.9A EP2498990B1 (de) | 2009-11-12 | 2010-11-09 | Silageabdeckung |
| UAA201207048A UA106510C2 (uk) | 2009-11-12 | 2010-11-09 | Покриття для силососу |
| AU2010318280A AU2010318280B2 (en) | 2009-11-12 | 2010-11-09 | Silage cover |
| US13/509,048 US20120295070A1 (en) | 2009-11-12 | 2010-11-09 | Silage cover |
| DK10781427.9T DK2498990T3 (da) | 2009-11-12 | 2010-11-09 | Ensilagetildækning |
| ZA2012/03353A ZA201203353B (en) | 2009-11-12 | 2012-05-09 | Silage cover |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200910052948 DE102009052948B4 (de) | 2009-11-12 | 2009-11-12 | Silageabdeckung |
| DE102009052948.9 | 2009-11-12 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| WO2011057752A2 true WO2011057752A2 (de) | 2011-05-19 |
| WO2011057752A3 WO2011057752A3 (de) | 2011-07-21 |
| WO2011057752A8 WO2011057752A8 (de) | 2012-05-18 |
Family
ID=43901625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2010/006799 Ceased WO2011057752A2 (de) | 2009-11-12 | 2010-11-09 | Silageabdeckung |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US20120295070A1 (de) |
| EP (1) | EP2498990B1 (de) |
| AU (1) | AU2010318280B2 (de) |
| CA (1) | CA2780189C (de) |
| DE (1) | DE102009052948B4 (de) |
| DK (1) | DK2498990T3 (de) |
| ES (1) | ES2913784T3 (de) |
| NZ (1) | NZ599638A (de) |
| RU (1) | RU2553911C2 (de) |
| UA (1) | UA106510C2 (de) |
| WO (1) | WO2011057752A2 (de) |
| ZA (1) | ZA201203353B (de) |
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| EP2514301A1 (de) * | 2011-04-20 | 2012-10-24 | Plastika Kritis S.A. | Mehrschichtige Kunststofffolie mit trennbaren Schichten zum Abdecken eines aufgeblasenen Gewächshauses |
| ITGE20110121A1 (it) * | 2011-10-25 | 2013-04-26 | Gamma Srl 2 | Film barriera multistrato ed uso di tale film barriera multistrato |
| WO2014023479A1 (en) * | 2012-08-08 | 2014-02-13 | Plastika Kritis S.A. | Multilayer plastic film with separable layers for covering of inflated greenhouse |
| IT201900006480A1 (it) | 2019-05-02 | 2020-11-02 | 2 Gamma Srl | Film barriera mono o multistrato da utilizzare per la copertura e/o fasciatura di prodotti naturali |
| RU2841159C1 (ru) * | 2020-07-27 | 2025-06-03 | Пластика Критис С.А. | Пленки для сельскохозяйственных конструкций |
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| DE102011111203B3 (de) * | 2011-08-25 | 2012-08-16 | Huesker Synthetic Gmbh | Rübenabdeckung |
| DE102012223915A1 (de) | 2012-12-20 | 2014-06-26 | Huesker Synthetic Gmbh | Silageabdeckung sowie Verfahren zur Silageabdeckung |
| NL2011990C2 (en) | 2013-12-19 | 2015-06-22 | Hyplast Nv | Sheeting for covering an object. |
| FR3022732B1 (fr) | 2014-06-25 | 2016-07-15 | Soc D'extrusion Du Polyethylene A Barbier Et Cie | Materiau barriere a l'oxygene en particulier pour couverture d'ensilage |
| EP3009263A1 (de) * | 2014-10-15 | 2016-04-20 | Trioplast AB | Sperrschichtfolie |
| US10932416B2 (en) * | 2014-11-19 | 2021-03-02 | Deere & Company | Composite wrap material with overlapping segments |
| AU2016225909B2 (en) * | 2015-09-16 | 2020-11-05 | Gale Pacific Limited | A cover suitable for covering grain |
| US20180338429A1 (en) * | 2015-10-27 | 2018-11-29 | Agriculture Victoria Services Pty Ltd | Method and device for storing agricultural products |
| CN106042549A (zh) * | 2016-05-30 | 2016-10-26 | 山东龙兴塑膜科技股份有限公司 | 一种二合一高阻隔五层共挤青贮覆盖膜及制备方法 |
| KR102407948B1 (ko) * | 2016-09-14 | 2022-06-13 | 바스프 에스이 | 디아민, 이량체 산 및 락탐의 코폴리아미드를 포함하는 농업용 필름 |
| DE102016118551A1 (de) * | 2016-09-29 | 2018-03-29 | Rkw Se | Abdecksystem zur Silagebereitung |
| DE102017107060A1 (de) | 2017-04-03 | 2018-10-04 | Rkw Se | Steigerung der Reißfestigkeit einer mehrschichtigen Folie |
| AT520608B1 (de) * | 2017-11-13 | 2021-08-15 | Scherleitner Dr Ing Mba Manfred | Silageverpackung |
| US10306840B1 (en) * | 2018-01-19 | 2019-06-04 | Adam J. Mueller | Reinforced agricultural silage covers |
| RU193163U1 (ru) * | 2018-10-25 | 2019-10-15 | Виктория Анатольевна Бунина | Водонепроницаемый слоистый укрывной материал |
| EP3894207B1 (de) * | 2018-12-11 | 2023-10-11 | Dow Global Technologies LLC | Silosäcke mit ungleichförmiger dicke und herstellungsverfahren |
| DE202019000670U1 (de) | 2019-02-12 | 2019-03-04 | Agrophil Gmbh | Abdeckmaterial für Biomassen |
| WO2022023782A1 (en) * | 2020-07-27 | 2022-02-03 | Plastika Kritis S.A. | Films for agricultural structures |
| DE102024101800A1 (de) | 2024-01-23 | 2025-07-24 | Rkw Se | Anordnung auf Polyethylenbasis |
| DE102024130356A1 (de) | 2024-10-18 | 2026-05-07 | Rkw Se | Anordnung auf Polyethylenbasis |
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- 2010-11-09 DK DK10781427.9T patent/DK2498990T3/da active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP2514301A1 (de) * | 2011-04-20 | 2012-10-24 | Plastika Kritis S.A. | Mehrschichtige Kunststofffolie mit trennbaren Schichten zum Abdecken eines aufgeblasenen Gewächshauses |
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| US20180027754A1 (en) * | 2011-04-20 | 2018-02-01 | Plastika Kritis S.A. | Multilayer plastic film with separable layers for covering of inflated greenhouse |
| EA029576B1 (ru) * | 2011-04-20 | 2018-04-30 | Пластика Критис С.А. | Многослойная пленка из пластмассы с разделяемыми слоями для покрытия надувных теплиц |
| US11058069B2 (en) | 2011-04-20 | 2021-07-13 | Plastika Kritis S.A. | Multilayer plastic film with separable layers for covering of inflated greenhouse |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2011057752A8 (de) | 2012-05-18 |
| RU2553911C2 (ru) | 2015-06-20 |
| RU2012123715A (ru) | 2013-12-20 |
| AU2010318280A1 (en) | 2012-05-24 |
| WO2011057752A3 (de) | 2011-07-21 |
| CA2780189C (en) | 2018-02-20 |
| NZ599638A (en) | 2014-10-31 |
| DK2498990T3 (da) | 2022-06-07 |
| UA106510C2 (uk) | 2014-09-10 |
| ZA201203353B (en) | 2013-01-30 |
| AU2010318280B2 (en) | 2015-05-28 |
| DE102009052948B4 (de) | 2013-05-29 |
| US20120295070A1 (en) | 2012-11-22 |
| EP2498990A2 (de) | 2012-09-19 |
| EP2498990B1 (de) | 2022-04-06 |
| ES2913784T3 (es) | 2022-06-06 |
| DE102009052948A1 (de) | 2011-05-26 |
| CA2780189A1 (en) | 2011-05-19 |
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