CPC B29C 64/118 (2017.08) [B33Y 10/00 (2014.12); C08G 18/3221 (2013.01); C09J 175/06 (2013.01); C08G 2170/20 (2013.01)] | 15 Claims |
1. A method of applying a material comprising a fusible polymer, comprising:
applying a filament of the fusible polymer comprising an at least partly molten material from a discharge opening of a discharge element to a substrate;
wherein the fusible polymer has the following properties:
a melting point within a range from ≥40° C. to ≤120° C. based on a differential scanning calorimetry 2nd heating at a heating rate of 5° C./min;
a glass transition temperature within a range from ≥−70° C. to ≤30° C. based on dynamic-mechanical analysis according to DIN EN ISO 6721-1:2011;
a storage modulus G′ at 20° C. above the melting point of ≥1·104 Pa based on ISO 6721-10:2015 using a plate/plate oscillation viscometer at a frequency of 1/s;
a storage modulus G′ at 10° C. below the melting point with prior heating to a temperature of 20° C. above the melting point and subsequent cooling at a cooling rate of 1° C./min of ≤1·107 Pa based on ISO 6721-10:2015 using a plate/plate oscillation viscometer at a frequency of 1/s;
wherein the filament is applied at an application temperature of ≥100° C. above the melting point of the fusible polymer for ≤5 minutes,
wherein, at a maximum application temperature attained during melting of the fusible polymer, the fusible polymer has a storage modulus G′ that is smaller by a factor of ≥10 than the storage modulus G′ at a temperature of 20° C. above the melting point of the fusible polymer based on ISO 6721-10:2015 using a plate/plate oscillation viscometer at a frequency of 1/s, and
wherein the fusible polymer comprises at least one of polyurethane, polyester, or a combination thereof.
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