The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 17, 2024
Filed:
Feb. 13, 2019
Covestro Intellectual Property Gmbh & Co. KG, Leverkusen, DE;
Dirk Achten, Leverkusen, DE;
Thomas Buesgen, Leverkusen, DE;
Joerg Tillack, Solingen, DE;
Peter Reichert, Dormagen, DE;
Nicolas Degiorgio, Krefeld, DE;
Martin Melchiors, Leichlingen, DE;
Wolfgang Arndt, Dormagen, DE;
Covestro Intellectual Property GmbH & Co. KG, Leverkusen, DE;
Abstract
The invention relates to a method for applying a material containing a meltable polymer comprising the step of applying a filament of the at least partially molten material from a discharge opening of a discharge element onto a substrate. The meltable polymer has the following properties: —a melting point (DSC, differential scanning calorimetry; second heating with a heating rate of 5° C./min) in a range from ≥40° C. to ≤120° C.; —a glass transition temperature (DMA, dynamic mechanical analysis in accordance with DIN EN ISO 6721-1:2011) in a range from ≥−70° C. to ≤30° C.; —a storage modulus G' (parallel plate oscillation viscometer in accordance with ISO 6721-10:2015 at a frequency of 1/s) at 20° C. above the melting point of ≥1·10Pa; —a storage modulus G′ (parallel plate oscillation viscometer in accordance with ISO 6721-10:2015 at a frequency of 1/s) at 10° C. below the melting point with prior heating to a temperature of 20° C. above the melting point and subsequent cooling with a cooling rate of 1° C./min of ≤1·10Pa; wherein the filament has an application temperature of ≥100° C. above the melting point of the meltable polymer for ≤5 minutes during the application process and wherein the meltable polymer further has the property that the storage modulus G′ (parallel plate oscillation viscometer in accordance with ISO 6721-10:2015 at a frequency of 1/s) of the meltable polymer at the highest application temperature reached during the application process is smaller by a factor of ≥10 than the storage modulus G′ (parallel plate oscillation viscometer in accordance with ISO 6721-10:2015 at a frequency of 1/s) at a temperature of 20° C. above the melting point of the meltable polymer.