Biomaterial product based on sunflower seed shells and/or sunflower seed hulls
AssigneeSpc Sunflower Plastic Compound GmbH
InventorsUlrich WENDELN, Ulrich MEYER
Life of this patent
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Abstract
The invention relates to a biomaterial product based on sunflower seed shells or sunflower seed hulls. The invention proposes the use, rather than of wood, bamboo, or other woodlike fiber products, of sunflower seed shells or sunflower seed hulls as starting material for the biomaterial products and the use thereof for producing such products, in order thereby to improve the existing biomaterials, including, in particular, by making them more cost-effective and enhancing their physical properties.
Claims15
A method for producing a biomaterial product based on
- sunflower seed shells or sunflower seed hulls, comprising the following steps:
- providing or producing a compounded material,
- the material resulting from compounding of a sunflower seed shell material or sunflower seed hull material with a plastics material,
- and
- processing the compounded material, or a compounded material resulting therefrom by treatment, at a temperature of 260° C. or less to form a biomaterial product,
- the total fraction of sunflower seed shell material or sunflower seed hull material in the biomaterial product being in the range from 20 to 60 wt %, based on the total mass of the biomaterial product, and
- the biomaterial product preferably possessing
- a density of 1 g/cm3 or greater than 1 g/cm3, and/or
- an elasticity modulus of 1000 MPa or greater than 1000 MPa, and/or
- a tensile strength of 10 MPa or greater than 10 MPa, and/or
- an elongation at break of 3% or greater than 3%.
The method of any of the preceding claims,
- the processing of the compounded material taking place at a temperature of 255° C. or less, 250° C. or less, 240° C. or less, more preferably at a temperature in the range from 100° C. to 260° C., preferably in the range from 150° C. to 250° C.
The method of any of the preceding claims,
- the biomaterial product possessing an elasticity modulus of 2000 MPa or greater than 2000 MPa.
The method of any of the preceding claims,
- the biomaterial product possessing a tensile strength of 20 MPa or greater than 20 MPa.
The method of any of the preceding claims,
- the processing of the compounded material, or of a compounded material resulting therefrom by treatment, to form a biomaterial product taking place by means of one, two or more, or all methods selected from the group consisting of
- extrusion, injection molding, rotomolding, press techniques, and thermoforming methods.
The method of any of the preceding claims, the sunflower seed shell material or sunflower seed hull material possessing
- a water fraction in the range from 1 to 10 wt %, preferably in the range from 4 to 8 wt %, more preferably in the range from 5 to 7 wt %,
- and/or
- a grain size in the range of 3 mm or less, preferably in the range from 0.01 to 1 mm, more preferably in the 0.1 to 0.3 mm range, and so
- the elasticity modulus and/or the tensile strength of the biomaterial product are increased,
- and/or
- a fat fraction of 6 wt % or less, preferably of 4 wt % or less, more preferably in the range between 1 to 2 wt %,
- based in each case on the total mass of the sunflower seed shell material or sunflower seed hull material.
The method of any of the preceding claims,
- the biomaterial product having a softening temperature in the range from 50 to 80° C., preferably not greater than 75° C.
The method of any of the preceding claims,
- the material resulting from compounding of a sunflower seed shell material or sunflower seed hull material with a polyamide, preferably of type PA6, and also one, two, or more than two additives, preferably of the type Irgafos 168 and/or Irganox 1076 and/or Licocene, preferably of type PP MA, 7452 TP,
- wherein
- the fraction of the polyamide is in the range from 65 to 75 wt %, based on the total mass of the biomaterial product,
- and
- the fraction of the sunflower seed shell material or sunflower seed hull material is in the range from 28 to 35 wt %, based on the total mass of the biomaterial product.
Dependencies are inferred from the claim text.