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1. WO2020136231 - COMPOUND OR FILM CONTAINING THERMOPLASTIC STARCH AND A THERMOPLASTIC POLYMER

Publication Number WO/2020/136231
Publication Date 02.07.2020
International Application No. PCT/EP2019/087058
International Filing Date 27.12.2019
Chapter 2 Demand Filed 28.10.2020
IPC
B29C 48/00 2019.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
48Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
B29C 48/91 2019.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
48Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
25Component parts, details or accessories; Auxiliary operations
88Thermal treatment of the stream of extruded material, e.g. cooling
91Heating, e.g. for cross linking
B29C 48/92 2019.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
48Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
25Component parts, details or accessories; Auxiliary operations
92Measuring, controlling or regulating
B29C 48/08 2019.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
48Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
03characterised by the shape of the extruded material at extrusion
07Flat, e.g. panels
08flexible, e.g. films
B29C 48/10 2019.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
48Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
03characterised by the shape of the extruded material at extrusion
09Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
10flexible, e.g. blown foils
B29C 48/40 2019.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
48Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
25Component parts, details or accessories; Auxiliary operations
36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
395using screws surrounded by a cooperating barrel, e.g. single screw extruders
40using two or more parallel screws, e.g. twin screw extruders
CPC
B29C 2948/92704
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
2948Indexing scheme relating to extrusion moulding
92Measuring, controlling or regulating
92504Controlled parameter
92704Temperature
B29C 2948/92942
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
2948Indexing scheme relating to extrusion moulding
92Measuring, controlling or regulating
92819Location or phase of control
92942Moulded article
B29C 48/022
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
48Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
022characterised by the choice of material
B29C 48/08
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
48Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
03characterised by the shape of the extruded material at extrusion
07Flat, e.g. panels
08flexible, e.g. films
B29C 48/10
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
48Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
03characterised by the shape of the extruded material at extrusion
09Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
10flexible, e.g. blown foils
B29C 48/40
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
48Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
25Component parts, details or accessories; Auxiliary operations
36Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
395using screws surrounded by a cooperating barrel, e.g. single screw extruders
40using two or more parallel screws ; or at least two parallel non-intermeshing screws; , e.g. twin screw extruders
Applicants
  • AGRANA STÄRKE GMBH [AT]/[AT]
Inventors
  • FAHRNGRUBER, Barbara
  • WASTYN, Marnik Michel
  • KOZICH, Martin
Agents
  • SONN & PARTNER PATENTANWÄLTE
Priority Data
18248136.628.12.2018EP
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) COMPOUND BZW. FOLIE ENTHALTEND THERMOPLASTISCHE STÄRKE SOWIE EIN THERMOPLASTISCHES POLYMER
(EN) COMPOUND OR FILM CONTAINING THERMOPLASTIC STARCH AND A THERMOPLASTIC POLYMER
(FR) COMPOSÉ OU FILM CONTENANT UN AMIDON THERMOPLASTIQUE ET POLYMÈRE THERMOPLASTIQUE
Abstract
(DE)
Beschrieben wird ein Verfahren zur Herstellung eines Compounds bzw. einer Folie enthaltend thermoplastische Stärke, eine Alpha-Hydroxycarbonsäure ROHCOOH, wobei R CH2 oder CH3CH2 bedeutet, in einer Menge von 0,1 bis 5, vorzugsweise 0,1 bis 3, besonders bevorzugt 0,1 bis 1 Gew. % bezogen auf die thermoplastische Stärke sowie ein thermoplastisches Polymer, bei welchen Verfahren das Compound bzw. die Folie während oder nach seiner/ihrer Extrusion einem zusätzlichen Erwärmungsschritt auf 100-140 °C ausgesetzt wird. Ebenfalls beschrieben wird eine zur Herstellung des Compounds verwendbare thermoplastische Stärke, ein durch das Verfahren hergestelltes Compound sowie eine aus einem solchen Compound hergestellte transparente Folie.
(EN)
The invention relates to a method for producing a compound or a film containing thermoplastic starch, an alpha-hydroxycarboxylic acid ROHCOOH, in which R is CH2 or CH3CH2, in an amount of from 0.1 to 5, preferably 0.1 to 3, particularly preferably 0.1 to 1 wt.% in relation to the thermoplastic starch, and a thermoplastic polymer, in which method the compound or the film is exposed during or after its extrusion to an additional heating step to 100-140°C. A thermoplastic starch usable for the production of the compound, a compound produced by the method, and a transparent film produced from such a compound are also described.
(FR)
L'invention concerne un procédé destiné à produire un composé ou un film contenant un amidon thermoplastique, un acide alpha-hydroxycarboxylique ROHCOOH, où R représente CH2 ou CH3CH2, en une quantité de 0,1 à 5, de préférence de 0,1 à 3, de manière particulièrement préférée de 0,1 à 1% en poids, rapporté à l'amidon thermoplastique, et un polymère thermoplastique, le procédé consistant à soumettre le composé ou le film à une étape de chauffage supplémentaire à 100-140 °C pendant ou après son extrusion. L'invention concerne également un amidon thermoplastique pouvant être utilisé pour produire le composé, un composé produit par le procédé et un film transparent produit à partir d'un tel composé.
Also published as
Latest bibliographic data on file with the International Bureau