NL2029774B1 - Biodegradable woven sheet for cultivation of plant seedlings - Google Patents

Biodegradable woven sheet for cultivation of plant seedlings Download PDF

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Publication number
NL2029774B1
NL2029774B1 NL2029774A NL2029774A NL2029774B1 NL 2029774 B1 NL2029774 B1 NL 2029774B1 NL 2029774 A NL2029774 A NL 2029774A NL 2029774 A NL2029774 A NL 2029774A NL 2029774 B1 NL2029774 B1 NL 2029774B1
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Netherlands
Prior art keywords
biodegradable
woven sheet
cup
sheet
shaped woven
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NL2029774A
Other languages
Dutch (nl)
Inventor
Everhardus Maria Langezaal Lucas
Original Assignee
Everhard Consulting B V
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 Everhard Consulting B V filed Critical Everhard Consulting B V
Priority to NL2029774A priority Critical patent/NL2029774B1/en
Priority to PCT/EP2022/078123 priority patent/WO2023088611A1/en
Application granted granted Critical
Publication of NL2029774B1 publication Critical patent/NL2029774B1/en

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    • 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
    • A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/02—Receptacles, e.g. flower-pots or boxes; Glasses for cultivating flowers
    • A01G9/021—Pots formed in one piece; Materials used therefor
    • 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
    • A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/02—Receptacles, e.g. flower-pots or boxes; Glasses for cultivating flowers
    • A01G9/029—Receptacles for seedlings
    • A01G9/0291—Planting receptacles specially adapted for remaining in the soil after planting

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  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Biological Depolymerization Polymers (AREA)
  • Cultivation Receptacles Or Flower-Pots, Or Pots For Seedlings (AREA)

Abstract

The present invention relates to a fully biodegradable cup shaped woven sheet for cultivation of plant seedlings or plants comprised of woven natural fibres and a biopolymer 5 coating. The present invention further relates to a method for providing a biodegradable cup shaped woven sheet and use thereof for cultivation of plant seedlings or plants.

Description

BIODEGRADABLE WOVEN SHEET FOR CULTIVATION OF PLANT SEEDLINGS
Description
The present invention relates to a fully biodegradable cup shaped woven sheet for cultivation of plant seedlings or plants comprised of woven natural fibres and a biopolymer coating. The present invention further relates to a method for providing a biodegradable cup shaped woven sheet and use thereof for cultivation of plant seedlings or plants.
The market for propagating young plants or plant seedlings continuously requires improvement of the substrate system in which young plants are cultivated. For example, the propagation or cultivation substrate is continuously adapted because the market (reduce carbon footprint), government (strict environmental and health legislation, reduction of chemicals) and consumers increasingly demand alternative substrates for example in view of the peat being used as substrate. Furthermore, increased use of robotics and advanced machines are also being used to reduce labour cost, with the downside that these machines place higher demands on the delicate growing substrate as well as higher quality standards for the plants.
To meet these increasing demands, the propagation pots and plugs are continuously improved. For example, glue is added to bond the culture substrate resulting in the glue plug, a plant pot consisting of paper is developed, in which the substrate is put in a paper sleeve. Sheets of rice straw and coconut fibre with a binder were made in which the sheet can be pushed into the tray and can serve as a basket that is filled with peat substrate. A nestable cone was developed that can be easily fitted into a plant tray, the cone comprised of a thin, warm wire of hot-melt binder that is twisted in various directions around a spindle to eventually create a non-woven basket. The wires overlap each other and at the overlap fusing occurs so that a bond is formed. This basket is eventually filled with peat substrate. In the present developed products for plant plugs or plant cultivation containers, a binder. often a non-degradable or synthetic binder, is used to bind the raw materials together. However due to the increasing and more strict government requirements there is a need to use improved and more environmentally friendly binders. Furthermore, due to the materials and binders used, the plant containers are less flexible, less durable, and prone to machine processing resulting in product losses.
Considering the above, there is a need in the art for improved and environmentally friendly plant cultivation container wherein binders are eliminated without sacrificing any other requirements of the plant plug or plant cultivation container. Such a product should preferably have an open structure to support for root growth but should be able to hold and contain the growth substrate for cultivation of plant seedlings. The product should also have a certain firmness in connection with the mechanical handling due to the increased use of machines and robots. The product should preferably be comprised of materials that are fully biodegradable that further provide sufficient cohesion and structure to the product. without the use of chemical binders.
It is an object of the present invention, amongst other objects, to address the above need in the art. The object of present invention, amongst other objects, is met by the present invention as outlined in the appended claims.
Specifically, the above object, amongst other objects, is met, according to a first aspect, by the present invention by a biodegradable cup shaped woven sheet for cultivation of plant seedlings or plants, wherein the sheet is comprised of woven natural fibres, wherein the sheet has a density of 50 to 350 g of fibres /m2, preferably 65 to 250 g of fibres /m2. more preferably 75 to 200 g of fibres /m2, most preferably 90 to 140 g of fibres /m2, and wherein at least one side of the sheet is comprised of a coating of biodegradable polymer for providing increased stiffness to the cup shaped woven sheet, wherein the sheet comprises between 5 to 40 wt%, preferably 10 to 30 wit%, more preferably 15 to 25 wt% biodegradable polymer, based on the total weight of the sheet, wherein said biodegradable polymer is one or more biodegradable polymers selected from the group consisting of colophony, starch-based biopolymers, agar, and bone meal-based biopolymers, preferably colophony. The biodegradable cup shaped woven sheet for cultivation of plant seedlings or plants of present invention can be filled and hold plant growing substrate. The sheet comprises an open structure due to the woven fibre material providing an optimal structure root growth and development of the plant. The biodegradable cup shaped woven sheet is provided with a coating on at least one surface with a biodegradable polymer for providing increased stiffness and firmness to the cup shaped sheet in connection with the increased mechanical handling as indicated above.
Finally the product is comprised of natural and biodegradable materials. The base fibres as well as the coating polymer is of natural origin (animal or plant based) and therefore complies with afore mentioned environmental legislation and fully biodegradable.
The sheet comprised of woven natural fibres can be obtained by weaving threads into a thin open weave. This sheet can be cut into a patch that is exactly the size of the inner surface of a plant tray, wherein the sheet can be pushed into the inner perimeter of a tray cub. The sheet fits into the tray as a basket or net that can be filled with plant growth substrate.
According to a preferred embodiment, the present invention relates to the biodegradable cup shaped woven sheet, wherein the biodegradable polymer coating is at least provided on the inner surface of the biodegradable cup shaped woven sheet. The sheet of natural fibres is reinforced for stiffness using a biodegradable polymer. In this case the bond is still made by the fabric but the stiffness comes from an added product. Smaller amounts of stiffer fibres can be added to the woven fibres or a biodegradable polymer such as starch is provided onto one side of the sheet of natural fibre. Preferably the biodegradable coating is provided on the inner side/surface of the biodegradable cup shaped woven sheet. Because the polymer is present on the inside/inner surface of the sheet and this sheet is positioned or pushed into the tray, the polymer coating does not come into contact with the plant tray inner surface which in turn may prevent that the woven sheet become more attached to the plant tray due to the biodegradable coating when on the outside surface of the woven sheet (i.e. the sheet will stick to the inside wall of the plant tray). In case the biopolymer coating is on the outside of the woven sheet, a release agent or additional water is needed to loosen the sheet comprising the plant seedling from the plant tray. Therefore, in case only the inner surface of the biodegradable cup shaped woven sheet is comprised of the biodegradable coating, the above issue when removing the plant seedling (including cup shaped woven sheet) from the plant tray is avoided. The biodegradable polymer coating is 100% natural origin, fully biodegradable and chemically stable and does not react with the natural fibre.
According to a preferred embodiment, the present invention relates to the biodegradable cup shaped woven sheet, wherein the natural fibres are of plant- or animal origin and one or more selected from the group consisting of jute, coconut, bamboo, viscose, cotton, cellulose, sisal, flax, hemp, wood, hoofed animal hair, animal hair, intestines, preferably jute, coconut or cotton. The stiffness of the fibre and the density of the weave determines the strength of the sheet. For example
Jute is a stiff fibre in contrast to viscose. If the tray type. cultivation and handling requires higher demands on firmness. a higher weight of the fabric can be used, whereby the mesh size becomes smaller and/or the fibre thickness increases. The firmness of the sheet of woven fibres of present invention can be adjusted by using thicker or thinner fibre and varying the mesh size, within the claimed ranges. However when outside these ranges, adverse affects on plant growth and plant /root development is observed. For example decreasing the mesh size too much will have negative effects on the growth of the roots and the bio-degradation rate of the natural fibre.
According to another preferred embodiment, the present invention relates to the biodegradable cup shaped woven sheet, wherein the sheet comprises a mesh size of between 2 to 8 mm, preferably 3 to 7 mm, more preferably 4 to 6 mm. The mesh size should be large enough to support proper plant root development and at the same time should provide sufficient base for holding the growth substrate and plant seedlings in the cup shaped sheet. Below 2 mm would affect the root development, and above 9 mm would result in a loss in structure and firmness of the cup shaped sheet and a loss of growth substrate going through the mesh of the woven sheet.
According to vet another preferred embodiment, the present invention relates to the biodegradable cup shaped woven sheet, wherein the sheet is fully biodegradable.
According to a preferred embodiment, the present invention relates to the biodegradable cup shaped woven sheet. wherein the coating of biodegradable polymer is water miscible. During harvesting of the grown plant from the plant tray. upon being removed from the tray, the roots or plants itself are often being damaged. Furthermore, the adhesive material that is being used to form the plant plug will also make contact to the (plastic) walls of the tray and is often also glued to the wall of the tray. The sheet of present invention used within such a plant tray prevents such difficulties and damages since the biodegradable polymer coating is preferably at the inside of the woven sheet and not in contact with the inside wall of the plant tray, and the biodegradable coating is water miscible, thereby when watering the plant seedling, the plant can be easily released from the tray without damaging the roots of the plant or risk of decomposing of the plant plug during release from the tray. The biopolymer coating is preferably at least provided on the inner surface of the biodegradable cup shaped woven sheet.
According to another preferred embodiment. the present invention relates to the biodegradable cup shaped woven sheet, wherein the biodegradable polymer is a mixture of at least
IO 80 wt% colophony and at most 20 wt% vegetable-based wax based on the weight of the biodegradable polymer. Mixing the colophony with the vegetable-based wax results in lowering of the melting point and an improved water miscibility of the colophony. Colophony is a resin that is produced by conifers and pine trees with high adhesive strength. At room temperature colophony is very brittle and has a melting point of around 80 - 90 ° Celsius. We have found that when combined with a saturated fatty acid (for example stearic acid), that has bi-functional properties with a polar and a non-polar part, such a mixture becomes increased water miscible. Above 20 wt% of vegetable-based wax, although beneficiary for the water miscibility, the melting point of the coating becomes too low such that the composition becomes too flexible and adversely affects the stiffening properties of the biopolymer coating of the cup shaped sheet. A further surprisingly effect is that the biodegradation of the cup shaped woven sheet is even further improved. The biodegradation is greatly shortened compared to the degradation time of 100% colophony. This is important for the bioaccumulation of the polymer in the soil if several crops take place on the same plot within a year. By means of the ratio of this mixture, we are able to control the degradation rate of the system depending on the cultivation used.
According to a preferred embodiment, the present invention relates to the biodegradable cup shaped woven sheet. wherein the vegetable based wax is selected from the group consisting of soy wax, palm wax, preferably soy wax. The saturated fatty acids are added to the colophony in the form of vegetable wax, preferably soy wax. Soy wax is made from hydrogenated soybean oil and is a 100% renewable product, produced from fast-growing crops and does not comprise further toxic chemicals or by products.
According to vet another preferred embodiment, the present invention relates to the biodegradable cup shaped woven sheet, wherein the natural fibres are approximately 0.5 to 1.5 mm thick, preferably 0.8 to 1.2 mm thick
The present invention, according to a second aspect, relates to a method for providing a biodegradable cup shaped woven sheet as described above into a plant tray or plant cup. wherein at least one side of the biodegradable woven sheet is being coated with a biodegradable polymer providing a coated biodegradable woven sheet for providing increased stiffness to the cup shaped woven sheet, wherein the sheet comprises between 5 to 40 wt% biodegradable polymer, based on the total weight of the sheet, wherein said biodegradable polymer is one or more biodegradable polymers selected from the group consisting of colophony, starch-based biopolymers, and bone 5 meal-based biopolymers, preferably colophony.
According to a preferred embodiment, the present invention relates to the method wherein the biodegradable polymer is provided as a hotmelt sprayed under pressure on one surface of the biodegradable woven sheet, preferably the biodegradable polymer coating is provided on the inner surface of the biodegradable woven sheet when said biodegradable woven sheet is provided in a plant tray for cultivation of plants.
According to another preferred embodiment, the present invention relates to the method wherein the coated biodegradable woven sheet is heated at 30 to 80 °C, preferably 40 to 60 °C, for example by means of infrared or warm air, for at most 10 seconds, preferably at most 5 seconds, directly followed by cutting the coated biodegradable cup shaped woven sheet into a size corresponding with the dimensions of said plant tray for substantially covering the inside surface of the plant tray and providing the coated biodegradable cup shaped woven sheet into a plant tray or plant cup, thereby providing the biodegradable cup shaped woven sheet having the shape of said plant tray of plant cup.
The present invention, according to a further aspect. relates to the use of a biodegradable cup shaped woven sheet for cultivation of plant seedlings or plants. Preferably the biodegradable cup shaped woven sheet is provided in a plant tray for cultivation of plants and the sheet corresponds with the dimensions of said plant tray covering the inside surface of the plant tray. The woven sheet of fibers covers the bottom and inner circumference of the plant tray cube. The woven sheet is like a net, that is open at the top and that can be filled with a growth substrate mixture for plant cultivation. The firmness of the sheet material and the counter pressure of the tray wall ensure that the net remains in position and is not pressed by the filling pressure of the substrate filling machine.
The present mvention will be further detailed 1n the following examples and figures wherein:
Figure 1: Left upper picture (A) shows a biodegradable woven sheet of woven natural fibers, more specifically Jute, that has not been coated with a biopolymer according to present invention. The right upper picture (B) shows this woven sheet after being applied into a plant tray or cup, to provide a cup shape, but loses the shape quickly after removal from the cup. The lower left picture (C) shows the biodegradable woven sheet of woven natural fibers, more specifically jute, that has been coated with a biopolymer, more specifically rosin (colophony), according to present invention. after being applied into a plant tray or cup, to provide a cup shape, and retaining this cup shape after removal from the cup or tray.
Figure 2: The upper picture (A) shows plant trays being filled with the biodegradable woven sheet of woven natural fibers coated with a biopolymer according to present invention. After applying the cup shaped sheet, the plant trays are being filled with growth substrate and plant seedlings for cultivation and plant growth. The lower left picture (B) shows the cup shaped biodegradable woven sheet of woven natural fibers coated with a biopolymer according to present invention that has been filled with growth substrate and has been removed from a plant tray or cup using a wooden pin to simulate the mechanical removal of the biodegradable cup shaped woven sheet for cultivation of plants according to present invention. The cup shaped structure remains fully intact and in cup shape after removal. On the lower right picture (C) a biodegradable woven sheet of identical biodegradable fibre material and filled with growth substrate as in picture 2B, however not being coated with colophony. After mechanical removal by a wooden pin, the cup shaped structure is less stable or even lost, and the growth substrate including biodegradable woven sheet falls out of shape and apart after removal from the plant tray.
Figure 3: Shows a plant seedling that has been cultivated using the biodegradable woven sheet of woven natural fibers coated with a biopolymer according to present invention. The growth substrate remains intact after being removed from the plant trays. Plant root development is unaffected by the biodegradable woven sheet of present invention. Furthermore, first signs of biodegradation are visible in the upper regions of the biodegradable woven sheet of present invention; green spots appear of fungal growth on the outside of the sheet, indicating the degradation of the colophony coating on the outside of the woven sheet of present invention.
Examples
Example 1 — Production of the biodegradable cup shaped woven sheet and use thereof in plant
A fabric jute sheet 1s provided comprised of woven jute fibres (about 120 g/m2) having a mesh size of about 5 mm. The fabric sheet is sprayed on one side with a warm hot melt comprising colophony (rosin), to provide the sheet with a coating of biodegradable polymer 20 wt% based on the total weight of the sheet. This produces a fluffy thin layer on the fabric only. The hotmelt is sprayed under pressure on one side of the fabric (preferably being the inside surface of the cup shaped woven sheet), wherein the biodegradable polymer is cooled down the moment the mist comes into contact with the fabric providing a hot melt layer on the fabric.
The coated woven fabric sheet is now cut to size using a cutting machine to create a ribbon of tailor-made patches that match the inner dimensions of the plant tray or plant cup. This ribbon of coated patches is rolled out over the plant tray such that each of the plant tray apertures are covered with a patch of coated woven fabric sheet. The ribbon of patches is then heated by means of
IO infrared or warm air for a short time (i.e. a few seconds depending on the supply temperature). The pieces are then separated from each other by means of a knife and pushed directly into the tray by a pusher having the same shape as the plant tray aperture. The coated fabric now takes the shape of the tray and due to the rapid cooling it stiffens into a sturdy cup shape “basket”, wherein the coating provides the increased stiffness to the cup shaped woven sheet. Heating | cutting and pushing is achieved within 10 to 12 seconds, preferably in 5 to 8 seconds. If the plant tray is filled with the_biodegradable cup shaped woven sheets of present invention, they can be filled with growth substrate for plant seedlings.

Claims (14)

ConclusiesConclusions 1. Een biologisch afbreekbaar komvormig geweven vel voor het kweken van plantzaailingen of planten, waarbij het vel bestaat uit geweven natuurlijke vezels, waarbij het vel een dichtheid heeft van 50 tot 350 g vezels/m2, en waarbij ten minste één zijde van de vel een coating van biologisch afbreekbaar polymeer omvat voor het verschaffen van verhoogde stijfheid aan het komvormige geweven vel, waarbij het vel tussen 5 en 40 gew.% biologisch afbreekbaar polymeer omvat, gebaseerd op het totale gewicht van het vel, waarbij genoemd biologisch afbreekbaar polymeer is één of meer biologisch afbreekbare polymeren gekozen uit de groep bestaande uit colofonium, op zetmeel gebaseerde biopolymeren, agar en op beendermeel gebaseerde biopolymeren, bij voorkeur colofonium. 1. A biodegradable cup-shaped woven sheet for growing plant seedlings or plants, the sheet consisting of woven natural fibres, the sheet having a density of 50 to 350 g fibres/m2, and at least one side of the sheet having a coating of biodegradable polymer for providing increased rigidity to the cup-shaped woven sheet, the sheet comprising between 5 and 40 weight percent biodegradable polymer, based on the total weight of the sheet, said biodegradable polymer being one or more biodegradable polymers selected from the group consisting of rosin, starch based biopolymers, agar and bonemeal based biopolymers, preferably rosin. 2, Biologisch afbreekbaar komvormig geweven vel volgens conclusie 1, waarbij de natuurlijke vezels van plantaardige of dierlijke oorsprong zijn en omvat één of meer gekozen uit de groep bestaande uit jute, kokosnoot, bamboe, viscose, katoen, cellulose, sisal, vlas, hennep , hout, hoefdierhaar, dierlijk haar, darmen, bij voorkeur jute, kokos of katoen.The biodegradable cup-shaped woven sheet according to claim 1, wherein the natural fibers are of vegetable or animal origin and comprises one or more selected from the group consisting of jute, coconut, bamboo, viscose, cotton, cellulose, sisal, flax, hemp, wood, ungulate hair, animal hair, intestines, preferably jute, coconut or cotton. 3. Biologisch afbreekbare komvormige geweven vel volgens conclusie 1 of 2, waarbij de biologisch afbreekbare polymeercoating tenminste is aangebracht op het binnen-oppervlak van het biologisch afbreekbare komvormige geweven vel.The biodegradable cup-shaped woven sheet according to claim 1 or 2, wherein the biodegradable polymer coating is applied at least to the inner surface of the biodegradable cup-shaped woven sheet. 4. Biologisch afbreekbaar komvormig geweven vel volgens een van de conclusies 1 tot en met 3, waarbij het vel een maaswijdte omvat van tussen 2 tot en met 8 mm, bij voorkeur 3 tot en met 7 mm, met meer voorkeur 4 tot en met 6 mm.A biodegradable cup-shaped woven sheet according to any one of claims 1 to 3, wherein the sheet comprises a mesh size of between 2 to 8 mm, preferably 3 to 7 mm, more preferably 4 to 6 mm mm. 5. Biologisch afbreekbaar komvormig geweven vel volgens een van de conclusies 1 tot en met 4, waarbij de houder volledig biologisch afbreekbaar is.A biodegradable cup-shaped woven sheet according to any one of claims 1 to 4, wherein the container is completely biodegradable. 6. Biologisch afbreekbare komvormige geweven vel volgens een van de conclusies 1 tot en met 5, waarbij de coating van biologisch afbreekbaar polymeer met water mengbaar is.The biodegradable cup-shaped woven sheet of any one of claims 1 to 5, wherein the biodegradable polymer coating is water-miscible. 7. Biologisch afbreekbare komvormige geweven vel volgens een van de conclusies 1 tot en met 6, waarbij het biologisch afbreekbare polymeer een mengsel is van ten minste 80 gew.% colofonium en ten hoogste 20 gew.% plantaardige was gebaseerd op het gewicht van het biologisch afbreekbare polymeer .The biodegradable cup-shaped woven sheet of any one of claims 1 to 6, wherein the biodegradable polymer is a blend of at least 80% by weight of rosin and at most 20% by weight of vegetable wax based on the weight of the biodegradable degradable polymer. 8. Biologisch afbreekbare komvormige geweven vel volgens conclusie 7, waarbij de plantaardige was is gekozen uit de groep bestaande uit sojawas, palmwas, bij voorkeur sojawas.The biodegradable cup-shaped woven sheet of claim 7, wherein the vegetable wax is selected from the group consisting of soy wax, palm wax, preferably soy wax. 9. Biologisch afbreekbare komvormige geweven vel volgens een van de conclusies 1 tot en met 8, waarbij de natuurlijke vezels ongeveer 0,5 tot en met 1,5 mm dik zijn, bij voorkeur 0,8 tot en met 1,2 mm dik.A biodegradable cup-shaped woven sheet according to any one of claims 1 to 8, wherein the natural fibers are about 0.5 to 1.5 mm thick, preferably 0.8 to 1.2 mm thick. 10. Werkwijze voor het aanbrengen van een biologisch afbreekbaar komvormig geweven vel volgens één van de conclusies 1 tot en met 9 in een plantentray of plantenbeker, waarbij ten minste één zijde van het biologisch afbreekbare geweven vel wordt gecoat met een biologisch afbreekbaar polymeer voor het verschaffen van verhoogde stijfheid aan het komvormige geweven vel verschaffende een gecoate biologisch afbreekbare geweven vel, waarbij het vel tussen 5 tot en met 40 gew.% biologisch afbreekbaar polymeer omvat, gebaseerd op het totale gewicht van het vel, waarbij genoemd biologisch afbreekbaar polymeer is een of meer biologisch afbreekbare polymeren gekozen uit de groep bestaande uit van colofonium, op zetmeel gebaseerde biopolymeren en op beendermeel gebaseerde biopolymeren, bij voorkeur colofonium.A method of applying a biodegradable cup-shaped woven sheet according to any one of claims 1 to 9 in a plant tray or plant cup, wherein at least one side of the biodegradable woven sheet is coated with a biodegradable polymer to provide of increased stiffness to the cup-shaped woven sheet providing a coated biodegradable woven sheet, the sheet comprising between 5 to 40 weight percent biodegradable polymer, based on the total weight of the sheet, said biodegradable polymer being one or more biodegradable polymers selected from the group consisting of rosin, starch based biopolymers and bonemeal based biopolymers, preferably rosin. LL. Werkwijze volgens conclusie 10, waarbij het biologisch afbreekbare polymeer wordt aangebracht als een hotmelt die onder druk wordt gespoten op een oppervlak van het biologisch afbreekbare geweven vel, bij voorkeur wordt de biologisch afbreekbare polymeercoating aangebracht op het binnen-oppervlak van het biologisch afbreekbare geweven vel wanneer het biologisch afbreekbare geweven vel wordt aangebracht in een plantentray voor het kweken van planten,LL. The method according to claim 10, wherein the biodegradable polymer is applied as a hot melt which is sprayed under pressure onto a surface of the biodegradable woven sheet, preferably the biodegradable polymer coating is applied to the inner surface of the biodegradable woven sheet when the biodegradable woven sheet is applied in a plant tray for growing plants, 12. Werkwijze volgens conclusie 10 of 11, waarbij het gecoate biologisch afbreekbare geweven vel wordt verwarmd op 30 tot en met 80 °C , bijvoorbeeld door middel van infrarood of warme lacht, gedurende maximaal 10 seconden, direct gevolgd door het snijden van het gecoate biologisch afbreekbare komvormige geweven vel in een maat die overeenkomt met de afmetingen van genoemde plantenbak voor het in hoofdzaak bedekken van het binnen-oppervlak van de plantenbak en het verschaffen van het gecoate biologisch afbreekbare komvormige geweven vel in een plantenbak of plantenbeker, waardoor het biologisch afbreekbare komvormige geweven vel wordt verschaft in de vorm van genoemde plantenbak of plantenbeker.A method according to claim 10 or 11, wherein the coated biodegradable woven sheet is heated at 30 to 80°C, for example by means of infrared or hot smiles, for a maximum of 10 seconds, immediately followed by cutting the coated biodegradable degradable cup-shaped woven sheet in a size corresponding to the dimensions of said planter for substantially covering the inner surface of the planter and providing the coated biodegradable cup-shaped woven sheet in a planter or plant cup, thereby making the biodegradable cup-shaped woven sheet is provided in the form of said planter or planter cup. 13. Gebruik van een biologisch afbreekbaar komvormig geweven vel volgens een van de conclusies 1 tot en met 9 voor het kweken van plantzaailingen of planten.Use of a biodegradable cup-shaped woven sheet according to any one of claims 1 to 9 for growing plant seedlings or plants. 14. Gebruik volgens conclusie 13, waarbij het biologisch afbreekbare komvormige geweven vel wordt aangebracht in een plantenbak voor het kweken van planten en het vel overeenkomt met de afmetingen van die plantenbak die in hoofdzaak het binnen-oppervlak van de plantenbak bedekt.Use according to claim 13, wherein the biodegradable cup-shaped woven sheet is applied in a planter for growing plants and the sheet conforms to the dimensions of said planter substantially covering the inner surface of the planter.
NL2029774A 2021-11-16 2021-11-16 Biodegradable woven sheet for cultivation of plant seedlings NL2029774B1 (en)

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NL2029774A NL2029774B1 (en) 2021-11-16 2021-11-16 Biodegradable woven sheet for cultivation of plant seedlings
PCT/EP2022/078123 WO2023088611A1 (en) 2021-11-16 2022-10-10 Biodegradable woven sheet for cultivation of plant seedlings

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2202664A (en) * 1939-03-03 1940-05-28 Leatherman Martin Plant propagating pot
DE102016115901A1 (en) * 2016-08-26 2018-03-01 Ernst Roschanzamir Biodegradable plant container and method for its production
EP3878269A1 (en) * 2020-03-10 2021-09-15 Frenzelit GmbH Use of a composite nonwoven material for building wall or facade greening

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2202664A (en) * 1939-03-03 1940-05-28 Leatherman Martin Plant propagating pot
DE102016115901A1 (en) * 2016-08-26 2018-03-01 Ernst Roschanzamir Biodegradable plant container and method for its production
EP3878269A1 (en) * 2020-03-10 2021-09-15 Frenzelit GmbH Use of a composite nonwoven material for building wall or facade greening

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