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:
Aug. 20, 2019
Filed:
May. 07, 2015
Andre Hennig, Ingelheim, DE;
Thomas Arnold, Gelnhausen, DE;
Michael Wicke, Seeheim-Jugenheim, DE;
Juergen Hartmann, Darmstadt, DE;
Bruno Keller, Wackernheim, DE;
Guenter Schmitt, Darmstadt, DE;
Michael Waldhaus, Reinheim, DE;
Andre Hennig, Ingelheim, DE;
Thomas Arnold, Gelnhausen, DE;
Michael Wicke, Seeheim-Jugenheim, DE;
Juergen Hartmann, Darmstadt, DE;
Bruno Keller, Wackernheim, DE;
Guenter Schmitt, Darmstadt, DE;
Michael Waldhaus, Reinheim, DE;
Evonik Roehm GmbH, Darmstadt, DE;
Abstract
The present invention comprises a single-component binder for heat-sealing applications which can be used for the sealing of polyester foils, in particular of polyethylene terephthalate foils (PET foils) with respect to containers made of polystyrene, of PVC, and of polyester. These polyesters can in particular be polyethylene terephthalate (PET) or polylactic acid (PLA). The binders here feature not only good seal seam strengths but also in particular good transparency and excellent application properties. A substantive aspect of the invention is that the sealing can be achieved without addition of adhesion promoters, in particular without addition of adhesion promoters based on polyvinyl chloride (PVC) or on polyester, and that barrier properties and sealing properties achieved in respect of containers made of PS and of PET are nevertheless at least comparable with, and sometimes better than, those achieved with heat-sealing systems already marketed.