Abstract: A film for covering agricultural structures, including: a) a polymeric film having one or more layers, wherein at least one of the layers includes one or more UV stabilisers; and b) a coating on at least one outer surface of the polymeric film, the coating including at least one layer containing a polymer, such that the film has an oxygen permeability below 500 ml/m2/bar/day at 23° C. and 0% relative humidity, as measured according to EN ISO 15105-2.
Type:
Application
Filed:
July 27, 2021
Publication date:
September 7, 2023
Applicant:
PLASTIKA KRITIS S.A.
Inventors:
Melani A. FRYSALI, Krystalenia ANDROULAKI
Abstract: A multilayered polymeric film for covering an agricultural structure or greenhouse is described herein, wherein the film contains adjacent layers that are capable of delamination from one another. A method of covering an agricultural structure or greenhouse with the multilayered polymeric film can comprise inserting gas between adjacent layers of the film.
Type:
Grant
Filed:
October 12, 2017
Date of Patent:
July 13, 2021
Assignee:
Plastika Kritis S.A.
Inventors:
Ioannis Lempidakis, Emmanouil Lempidakis, Michail Lempidakis
Abstract: The present disclosure provides a multilayered polymeric film for covering an agricultural structure or greenhouse, wherein the film contains adjacent layers that are capable of delamination from one another.
Type:
Application
Filed:
October 12, 2017
Publication date:
February 1, 2018
Applicant:
Plastika Kritis S.A.
Inventors:
Ioannis Lempidakis, Emmanouil Lempidakis, Michail Lempidakis
Abstract: A large concentric co-extrusion die (1) is described having a plurality of annular or conical die mandrel layers (201-205). Each layer is formed between a pair of adjacent annular or conical die mandrels (101-106) defining between them a flow path for molten thermoplastics material from an inlet to an annular extrusion outlet (110) through which a thermoplastics tubular extrusion is formed in use. Extrusion takes place through the multiple annular layer outlets (301-305) to form a multi-layered product. At least one layer (203) of the annular or conical die mandrels has a plurality of molten material inlets arranged around the external circumference of the co-extrusion die with each inlet being connected to a feed channel (403) which has plural bifurcations (403.1, 403.2, 403.3) providing 2n subsidiary outlet feed channels (503) where n is the number of bifurcations. Each subsidiary outlet feed channel being connected to a corresponding helical outlet channel (703).
Type:
Grant
Filed:
July 19, 2012
Date of Patent:
January 16, 2018
Assignee:
Plastika Kritis S.A.
Inventors:
Emmanouil Lempidakis, Ioannis Melas, Minas Kalarakis
Abstract: The present disclosure provides a multilayered polymeric film for covering an agricultural structure or greenhouse, wherein the film contains adjacent layers that are capable of delamination from one another.
Type:
Grant
Filed:
April 20, 2012
Date of Patent:
November 21, 2017
Assignee:
Plastika Kritis S.A.
Inventors:
Ioannis Lempidakis, Emmanouil Lempidakis, Michail Lempidakis
Abstract: The present invention provides a multilayered polymeric film with a luminous transmittance greater than 30% when measured using ASTM-D 1003-92, for covering an agricultural structure or greenhouse, wherein the film contains adjacent layers that have an average delamination strength of less than 250 g/15 mm when measured using ASTM D-1876. More particularly, the film is thus separated into two or more film layers which are inflated with gas to provide thermal insulation.
Type:
Application
Filed:
June 28, 2013
Publication date:
August 27, 2015
Applicant:
Plastika Kritis S.A.
Inventors:
Ioannis Lempidakis, Emmanouil Lempidakis, Michail Lempidakis, Ioannis Melas, Konstantinos Vertoudakis
Abstract: A large concentric co-extrusion die (1) is described having a plurality of annular or conical die mandrel layers (201-205). Each layer is formed between a pair of adjacent annular or conical die mandrels (101-106) defining between them a flow path for molten thermoplastics material from an inlet to an annular extrusion outlet (110) through which a thermoplastics tubular extrusion is formed in use. Extrusion takes place through the multiple annular layer outlets (301-305) to form a multi-layered product. At least one layer (203) of the annular or conical die mandrels has a plurality of molten material inlets arranged around the external circumference of the co-extrusion die with each inlet being connected to a feed channel (403) which has plural bifurcations (403.1, 403.2, 403.3) providing 2n subsidiary outlet feed channels (503) where n is the number of bifurcations. Each subsidiary outlet feed channel being connected to a corresponding helical outlet channel (703).
Type:
Application
Filed:
July 19, 2012
Publication date:
June 12, 2014
Applicant:
PLASTIKA KRITIS S.A.
Inventors:
Emmanouil Lempidakis, Ioannis Melas, Minas Kalarakis
Abstract: The present disclosure provides a multilayered polymeric film for covering an agricultural structure or greenhouse, wherein the film contains adjacent layers that are capable of delamination from one another.
Type:
Application
Filed:
April 20, 2012
Publication date:
April 25, 2013
Applicant:
Plastika Kritis S.A.
Inventors:
Ioannis Lempidakis, Emmanouil Lempidakis, Michail Lempidakis