Composite material with vine shoot, method to manufacture such composite material and agricultural accessory made of such composite material

{
  "publication_number": "US2015251337A1",
  "country": "US",
  "kind": "A1",
  "title": "Composite material with vine shoot, method to manufacture such composite material and agricultural accessory made of such composite material",
  "abstract": "The invention relates to a composite material comprising at least a plastic matrix in which a powder of vine shoots is incorporated. The invention also relates to a method of obtaining a composite material. The invention also relates to an agricultural accessory (1, 10) intended for tying in vine stock.",
  "claims": [
    "1. A composite material comprising at least a plastic matrix in which a powder of vine shoots is incorporated. 2. The composite material according to claim 1, wherein the proportion of powder of vine shoots is at least 20% in weight compared to the total weight of the composite material. 3. The composite material according to any one of claim 1 or 2, wherein the plastic material of the matrix is a polymer selected from among polypropylene or polylactic acid and the combinations thereof. 4. A method of manufacturing a composite material according to any one of claims 1 to 3, characterized in that the method comprises at least one step of grinding vine shoots in order to obtain in fine a powder of vine shoots, at least one step of drying the vine shoots, and at least one step of incorporating said powder of vine shoots in a matrix made of plastic material. 5. The method according to claim 4, comprising the following steps: a first step of grinding vine shoots in order to obtain pellets of vine shoots, a step of drying vine shoot pellets until said pellets of vine shoots comprise a determined humidity rate, a second step of grinding dried pellets of vine shoots until a powder of vine shoots is obtained, a step of blending the powder of vine shoots in a matrix made of plastic material. 6. The method according to claim 5, wherein the first grinding step comprises a first sub-step in which the vine shoots are grinded into chips of a size between 150 mm and 50 mm and a second sub-step in which the chips of vine shoots are grinded into pellets of a size lower than 20 mm. 7. The method according to any one of claim 5 or 6, wherein one goes from the drying step to the second grinding step only when the pellets of vine shoots comprise a humidity rate lower than or equal to 10% compared to the mass of a pellets. 8. The method according to any one of claims 5 to 7, wherein the second grinding step comprises a sub-step of screening. 9. The method according to any one of claims 4 to 8, wherein the powder of vine shoots comprises at least 60% of the particles forming the powder with a particle size between 300 micron and 800 micron. 10. Agricultural accessory (1, 10) intended for tying in vine stock, characterized in that the said agricultural accessory is manufactured with the composite material according to any one of claims 1 to 3. 11. Agricultural accessory according to claim 10, wherein the said agricultural accessory (1) is a vine stake (1) configured to hold threads used to tying-in vine shoots. 12. Agricultural accessory according to claim 11, wherein the said agricultural accessory (1) comprises comprising a first end (2) intended to be driven into the ground and a second opposite free end (3), characterized in that the agricultural accessory (1) comprises a central portion (4) positioned between the first end (2) and the second end (3), said central portion (4) comprising at least one housing (5 a, 5 b) arranged on a face (6, 7) of said central portion (4), said housing (5 a, 5 b) forming a notch being shaped to receive and hold at least one bearing thread or one lifting thread of vine shoots and to allow winding said thread around the agricultural accessory (1). 13. Agricultural accessory according to claim 12, wherein the central portion (4) comprises a first lateral face (6) and a second lateral face (7), the first lateral face (6) and the second lateral face (7) being opposite relative to a longitudinal axis (X-X) of the stake (1), a first housing (5 a) forming a notch and a second housing (5 b) forming a notch being arranged respectively on the first lateral face (6) and on the second lateral face (7). 14. Agricultural accessory according to claim 10, wherein the said agricultural accessory (10) is a vine clip (10) comprising at least one housing (11 a, 11 b) shaped to hold at least two lifting threads (15) tight. 15. Agricultural accessory according to claim 14, wherein the said agricultural accessory (10) comprises a first housing (11 a) and a second housing (11 b), the first housing (11 a) being oriented angularly relative to the second housing (11 b) such as a first housing end (12 a) is combined with an end (12 b) of the second housing (11 b), forming a throttling section (13) shaped to keep the lifting threads (15)."
  ],
  "description_excerpt": "The invention relates to a composite material and the method of manufacturing the said composite material Usually, the vine shoots are trimmed during the winter season. This trimming generates between 2250 and 3500 kg of shoots per hectar of vine, which is quite significant as France counts 790 000 hectares of vine. Once trimmed and stored, these vine shoots are burned instead of being used, thus generating CO 2 dispersions into the atmosphere. In order to reduce and/or prevent th s ecological waste, the object of the invention resides in the manufacturing of a composite material comprising at least one plastic matrix in which is incorporated a powder of vine shoots. According to the invention, the vine shoots are hence used as raw material integrated in a composite material, thus preventing the automatic burning of these vine shoots. Thus, the manufacturing costs of some products such as vine stakes or vine props etc., may be reduced in using a local raw material such as the one according to the invention.\n\nFurthermore, the composite material according to the invention is a rot-proof material thanks to vine shoots, which is very advantageous if this material is used for producing outdoor tools such as vine stakes or vine props and the like. The vine shoots are very advantageous as they are lighter than most types of wood, thus allowing to obtain in fine a light composite material. According to a feature of the invention, the proportion of powder of vine shoots is at least 20% in weight compared to the total weight of the composite material. From 20%, the cost of the petroleum matrix is considerably reduced.",
  "cpc": [
    "A01G 17/08",
    "A01G 17/04",
    "A01G 17/14",
    "B29B 13/10",
    "B29B 7/002",
    "B29K 2023/12",
    "B29K 2067/046",
    "B29K 2511/14",
    "C08H 8/00",
    "C08L 2201/06",
    "C08L 23/12",
    "C08L 67/04",
    "C08L 97/02",
    "F16B 2/22",
    "Y10T 24/3916"
  ],
  "ipc": [
    "A01G 17/04",
    "B29B 13/10",
    "B29B 7/00",
    "C08L 23/12",
    "C08L 67/04",
    "F16B 2/22"
  ],
  "assignees": [
    "BIDAULT STEPHANE"
  ],
  "inventors": [
    "BIDAULT STEPHANE"
  ],
  "filing_date": "2015-02-05",
  "publication_date": "2015-09-10",
  "priority_date": "2014-02-06",
  "application_number": "US-201514614902-A",
  "family_id": "52350050",
  "citations": [
    "CN101735581A",
    "US2002192774A1",
    "US2005287282A1",
    "US2006141121A1",
    "US2009258957A1",
    "US2013336877A1",
    "US5017319A",
    "US5955023A"
  ]
}