WO2023046354A1 - Netz für ballenpressen - Google Patents
Netz für ballenpressen Download PDFInfo
- Publication number
- WO2023046354A1 WO2023046354A1 PCT/EP2022/072189 EP2022072189W WO2023046354A1 WO 2023046354 A1 WO2023046354 A1 WO 2023046354A1 EP 2022072189 W EP2022072189 W EP 2022072189W WO 2023046354 A1 WO2023046354 A1 WO 2023046354A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- less
- net
- weight
- fringes
- stitches
- Prior art date
Links
- -1 polyethylene Polymers 0.000 claims description 13
- 239000004698 Polyethylene Substances 0.000 claims description 9
- 229920000573 polyethylene Polymers 0.000 claims description 9
- 230000027455 binding Effects 0.000 claims description 7
- 238000009739 binding Methods 0.000 claims description 7
- 239000004743 Polypropylene Substances 0.000 claims description 6
- 229920001903 high density polyethylene Polymers 0.000 claims description 6
- 239000004700 high-density polyethylene Substances 0.000 claims description 6
- 229920001155 polypropylene Polymers 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 description 11
- 239000004033 plastic Substances 0.000 description 11
- 229920000098 polyolefin Polymers 0.000 description 7
- 230000002349 favourable effect Effects 0.000 description 6
- 238000004806 packaging method and process Methods 0.000 description 5
- 239000004744 fabric Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000009940 knitting Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 239000010902 straw Substances 0.000 description 3
- 239000004461 grass silage Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000026058 directional locomotion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 239000004463 hay Substances 0.000 description 1
- 229920006262 high density polyethylene film Polymers 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000033001 locomotion Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 229920002959 polymer blend Polymers 0.000 description 1
- 229920005604 random copolymer Polymers 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- D04B21/10—Open-work fabrics
-
- 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
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- D04B21/10—Open-work fabrics
- D04B21/12—Open-work fabrics characterised by thread material
-
- 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
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2505/00—Industrial
- D10B2505/10—Packaging, e.g. bags
Definitions
- the invention relates to a net for balers with plain weaves consisting of stitches formed with threads connected with a weft.
- Nets are widely used as a material for air-permeable packaging of loose goods such as hay, straw, vegetables, raw cotton, logs, waste or other plant parts.
- Nets for packaging loose goods are preferably produced by Raschel machines.
- Raschel machines are manufactured, for example, by Textilmaschinenfabrik Karl Mayer GmbH, Frankfurt, Germany.
- the lumpy packaging unit bale is usually produced by baling presses, preferably by round baling presses.
- the hay, straw or grass silage is rolled up using a towed press and preferably formed into cylindrical bales. This can e.g. B. done in a press either by rubber belts or by steel rollers.
- the bales usually have a diameter of 120 to 180 cm and are about 120 cm wide.
- the weight is between 200 kg for loosely pressed straw and 1000 kg for grass silage with a dry matter of only 20%.
- Nets for round bales are wide-meshed nets made of plastic, preferably polyethylene, preferably high-density polyethylene (HDPE).
- the fine and stable ribbons are first cut from HDPE film, which are then knitted into the actual bale net.
- Bale nets are supplied on rollers large numbers of running meters wound up. As a result, they are productive and only a few roll changes are required during pressing.
- the bindings allow the threads in the net to be permanently held together.
- the binding is repeated continuously over the entire surface of the net.
- the basic weaves include stitches and laps.
- the stitch binding determines the type of thread entanglement in knitwear.
- the stitch is the connection of two intertwined thread loops to form the smallest, stable unit of knitwear.
- DE 3227 160 C2 describes a rolled bale made of agricultural crops with a circumferential, shape-fixing jacket made of fabric, which has overlapping end pieces that adhere to one another.
- the fabric of the jacket web consists of a net that is essentially inelastic in the circumferential direction, which additionally adheres with its overlapping area to the stalks that pass through without additional fixations such as welding, stapling or gluing.
- EP 2 683 863 B2 discloses a Raschel machine comprising a stretching device for stretching the length of a stitch made from a weft thread connecting two rows of stitches of warp threads during the manufacture of a net by controlling the working path of the stitch while pulling the Rows of stitches in a machine direction
- the stretching device is an elongated flexible object having a surface for positioning the stitch during drawing of the rows of stitches and an abutment portion for pressing against an abutment member of the Raschel machine during reciprocation of the object, and attachment means for attachment of drive means for generating the reciprocation, the stretching device for moving the surface of the object toward the stitch positioned on the surface during reciprocation.
- a flexible projection is placed on the surface of the object to prevent movement of the stitch positioned on the surface during reciprocation and pulling of the rows of stitches away from the surface and to release the stitch acting on the projection.
- EP 0 919 655 B2 discloses a Raschel knitted net comprising longitudinal polyolefin tapes and transverse polyolefin tapes which are knitted with the longitudinal polyolefin tapes on a machine for forming a knitted net, with two longitudinal polyolefin tapes forming the legs of a triangle.
- at least one of its transverse polyolefin bands has an actual length that is more than 110% of the length of a calculated length for the knitted net.
- a Raschel machine that has a plurality of first guide needles arranged along a first direction for guiding warp threads, a plurality of second guide needles arranged along the first direction for guiding weft threads, and a plurality of along the needles arranged in the first direction for producing stitches of threads chained to one another, whereby the warp threads are produced.
- the first guide needles are held by a first needle bar
- the second guide needles are held by a second needle bar
- the second guide needle is held between every two adjacent first guide needles moved back and forth.
- the distance between the adjacent first guide pins is greater than 25.4 mm.
- the object of the invention is to provide a net for baling presses that contributes to saving resources by using as little plastic as possible and at the same time has a high tearing strength.
- the net should be particularly stable and tear-resistant, meet the required mechanical properties of the intended use and ensure reliable packaging of loose goods. Furthermore, the net should be recyclable.
- the basic weaves of the net are designed as fringes.
- the net has fewer than 49 fringes with a width of 1.23 m, as a result of which plastic is saved in comparison to the prior art due to the lower number of fringes.
- the net has a tearing strength of more than 2300 N, preferably more than 2550 N, in particular more than 2800 N.
- the basic weave used to knit the bale net is the stitch in the form of a fringe, in particular the open fringe, in combination with the weft binding element.
- the guide bar of a Raschel machine When creating a fringe, the guide bar of a Raschel machine always places the same thread around the same needle. When knitting fringes, only wales are created that do not form a continuous surface. For this reason, the fringe is knitted in combination with the weft binding element, which creates the lateral connection between the wales. A separate guide bar is used for the shot in the Raschel machine.
- the net has fewer than 38 fringes, preferably fewer than 36 fringes, in particular fewer than 34 fringes.
- the net has more than 28 fringes, preferably more than 30 fringes, in particular more than 32 fringes.
- the net has 33 fringes and corresponds to a 1.5 inch net, based on the standardized standard width of 1.23 m.
- the 1.5 inch net shows the special recipe and the sophisticated knitting technique an optimum in terms of material savings with the best mechanical properties at the same time.
- the mechanical properties include, for example, the elongation at break of the net.
- the net has an elongation at break of more than 16%, preferably more than 18%, in particular more than 20% and/or less than 28%, preferably less than 26%, in particular less than 24%.
- the fringes are knitted from threads with special properties, so that the net with a width of 123 cm has a specific weight of more than 7 g/m, preferably more than 8 g/m, in particular more than 9 g/m and/or less than 13 g/m, preferably less than 12 g/m, in particular less than 11 g/m.
- the knitted net has a tear strength of more than 40 cN/tex, preferably more than 50 cN/tex, in particular more than 60 cN/tex according to DIN EN ISO 527-3.
- the unit tex in textile technology stands for 1 g/1000 m.
- the stitch density describes the number of stitches per centimeter and is therefore a measure of the density of the knitted fabric.
- the fringes of the bale net are particularly tear-resistant, which, in addition to the special recipe, is due to the optimal mesh density.
- the fringes have a stitch density of more than 0.6 stitches/cm, preferably more than 0.7 stitches/cm, in particular more than 0.8 stitches/cm and/or less than 1.2 stitches/cm, preferably less than 1.1 stitches/cm, in particular less than 1.0 stitches/cm.
- the fringing of the Raschel machine creates fringes of triple-knit threads, which contributes to the special breaking strength of the net.
- the weft is created by moving the weft thread between two needles while the net being knitted moves longitudinally in the knitting machine. Because of the two directional movements, the weft forms the legs of a triangle while the fringe forms a triangle base forms. The tension of the weft can be adjusted to form a so-called weft reserve.
- the net preferably has a shot reserve of more than 112%, preferably more than 114%, in particular more than 116% and/or less than 124%, preferably less than 122%, in particular less than 120%.
- the shot reserve is exactly 118%.
- adjacent fringes are connected with a weft thread in a zigzag pattern, with more than every 3rd stitch, preferably more than every 4th stitch, in particular more than every 5th stitch of a fringe being knitted with the weft thread and/or wherein less than every 9th stitch, preferably less than every 8th stitch, in particular less than every 7th stitch, is forfeited with the weft thread.
- every 6th stitch is interlaced with a weft thread.
- the net for baling presses according to the invention has an enormous tearing strength, although the plastic threads are made particularly thin to save material.
- the thickness of the threads is more than 15 ⁇ m, preferably more than 30 ⁇ m, in particular more than 45 ⁇ m and/or less than 85 ⁇ m, preferably less than 70 ⁇ m, in particular less than 55 ⁇ m.
- the thickness of the thread is 50 ⁇ m.
- the weft causes the lateral stability of the net for balers.
- the thickness of the shot is more than 5 ⁇ m, preferably more than 10 ⁇ m, in particular more than 15 ⁇ m and/or less than 50 ⁇ m, preferably less than 45 ⁇ m, in particular less than 40 ⁇ m .
- the threads of the plastic film for the fringes preferably have a polyethylene component, preferably an HDPE, with the proportion of the polyethylene component being more than 50% by weight, preferably more than 60% by weight, in particular more than 70% by weight. -% and/or less than 85% by weight, preferably more than 80% by weight, in particular more than 75% by weight.
- the favorable features of the bale net are produced by threads which have a polypropylene component, preferably a PP, preferably a random copolymer, the proportion of the polypropylene component being more than 10% by weight, preferably more than 15% by weight. , in particular more than 20% by weight and/or less than 40% by weight, preferably more than 35% by weight, in particular more than 30% by weight.
- the threads of the weft are produced by a film that has a polyethylene component, preferably an HDPE, the proportion of the polyethylene component being more than 80% by weight, preferably more than 90% by weight, in particular more than 95% by weight .-% amounts to.
- the polymer components mentioned are preferably first extruded by blow molding to form a primary film for the fringe threads.
- the film is preferably cut into strips about 5 mm wide, which have a thickness of about 100-140 ⁇ m, for example.
- the tapes are stretched over a heating comb at approx. 90-120° C. with a stretching ratio of 1:4 to 1:8.
- the polymer components for the threads of the weft are preferably blow-extruded into a film which has a thickness of 70-90 ⁇ m.
- This foil is preferably cut into ribbons with a width of approx. 2.4-2.7 mm.
- the ribbons for the weft are stretched over a heating comb at approx. 90 - 120 °C with a stretching ratio of 1:4 to 1:8.
- the special selection of the polymer components creates the basis for recycling at the same time.
- the unmixed polyolefin net can be recycled after use.
- the number of weft threads is more than 20, preferably more than 25, in particular more than 30 and/or less than 50, preferably less than 40, in particular less than 35.
- the distance between adjacent fringes is more than 25.4 mm and less than 50.8 mm, preferably the distance is more than 31.75 mm and less than 44.45 mm, in particular the distance is exactly 38.1 mm.
- the threads of the fringes and/or the threads of the weft have a UV protective component, the proportion of the UV protective component in the polymer mixture being more than 1% by weight. , preferably more than 2% by weight, in particular more than 3% by weight and/or less than 7% by weight, preferably more than 6% by weight, in particular more than 5% by weight.
- 1 shows a detailed view of a bale net.
- Fig. 1 shows a detailed view of a bale net.
- a 1.5 inch net 1 is shown, which includes 33 fringes 3 .
- the stitches are designed as open fringes, which are knitted from threads 2.
- the triple-knit fringes have a stitch density of 0.9 stitches/cm.
- the threads 2 have a thickness of 49 ⁇ m.
- the net 1 has a specific weight of 10 g/m and a tear strength of 55 cN/tex.
- Adjacent fringes 3 are each forfeited with a weft 4, resulting in the network 1 as a flat structure.
- a weft 4 is inserted into every sixth stitch of a fringe 3.
- the fringe 3 to fringe 3 symmetrical weft weave creates a zigzag pattern.
- the bale net knitted in this way has a breaking strength of more than 2850 N and an elongation at break of 22%.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Woven Fabrics (AREA)
- Knitting Of Fabric (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18/683,305 US20240341240A1 (en) | 2021-09-21 | 2022-08-08 | Net for baling presses |
CA3222634A CA3222634A1 (en) | 2021-09-21 | 2022-08-08 | Net for balers |
EP22761225.6A EP4294972A1 (de) | 2021-09-21 | 2022-08-08 | Netz für ballenpressen |
AU2022352949A AU2022352949A1 (en) | 2021-09-21 | 2022-08-08 | Net for baling presses |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102021124311.4A DE102021124311A1 (de) | 2021-09-21 | 2021-09-21 | Netz für Ballenpressen |
DE102021124311.4 | 2021-09-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2023046354A1 true WO2023046354A1 (de) | 2023-03-30 |
Family
ID=83115371
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2022/072189 WO2023046354A1 (de) | 2021-09-21 | 2022-08-08 | Netz für ballenpressen |
Country Status (6)
Country | Link |
---|---|
US (1) | US20240341240A1 (de) |
EP (1) | EP4294972A1 (de) |
AU (1) | AU2022352949A1 (de) |
CA (1) | CA3222634A1 (de) |
DE (1) | DE102021124311A1 (de) |
WO (1) | WO2023046354A1 (de) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3227160C2 (de) | 1982-07-21 | 1990-05-17 | Claas Ohg, 4834 Harsewinkel, De | |
EP0919655B2 (de) | 1997-11-25 | 2011-08-10 | Tama Plastic Industry | Gewirktes Netz mit modifiziertem Schuss |
DE102015119867A1 (de) | 2015-11-17 | 2017-05-18 | Karatzis S.A. Industrial & Hotelier Enterprises | Raschelmaschine, Netz und Verfahren zur Herstellung eines Netzes |
US20170283998A1 (en) * | 2014-09-30 | 2017-10-05 | Cordenet - Produtora De Redes Agricolas S.A. | Net with identification and traceability system |
EP2683863B2 (de) | 2011-03-10 | 2018-07-25 | Karatzis S.A. | Vorrichtung zum verlängern von maschen, verlängerungsvorrichtung zur herstellung eines netzes mit verlängerten maschen, verfahren zur herstellung eines netzes mit verlängerten maschen |
-
2021
- 2021-09-21 DE DE102021124311.4A patent/DE102021124311A1/de active Pending
-
2022
- 2022-08-08 WO PCT/EP2022/072189 patent/WO2023046354A1/de active Application Filing
- 2022-08-08 EP EP22761225.6A patent/EP4294972A1/de active Pending
- 2022-08-08 CA CA3222634A patent/CA3222634A1/en active Pending
- 2022-08-08 US US18/683,305 patent/US20240341240A1/en active Pending
- 2022-08-08 AU AU2022352949A patent/AU2022352949A1/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3227160C2 (de) | 1982-07-21 | 1990-05-17 | Claas Ohg, 4834 Harsewinkel, De | |
EP0919655B2 (de) | 1997-11-25 | 2011-08-10 | Tama Plastic Industry | Gewirktes Netz mit modifiziertem Schuss |
EP2683863B2 (de) | 2011-03-10 | 2018-07-25 | Karatzis S.A. | Vorrichtung zum verlängern von maschen, verlängerungsvorrichtung zur herstellung eines netzes mit verlängerten maschen, verfahren zur herstellung eines netzes mit verlängerten maschen |
US20170283998A1 (en) * | 2014-09-30 | 2017-10-05 | Cordenet - Produtora De Redes Agricolas S.A. | Net with identification and traceability system |
DE102015119867A1 (de) | 2015-11-17 | 2017-05-18 | Karatzis S.A. Industrial & Hotelier Enterprises | Raschelmaschine, Netz und Verfahren zur Herstellung eines Netzes |
Also Published As
Publication number | Publication date |
---|---|
AU2022352949A1 (en) | 2024-01-18 |
US20240341240A1 (en) | 2024-10-17 |
DE102021124311A1 (de) | 2023-03-23 |
EP4294972A1 (de) | 2023-12-27 |
CA3222634A1 (en) | 2023-03-30 |
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