(19)
(11) EP 2 874 792 A2

(12)

(43) Date of publication:
27.05.2015 Bulletin 2015/22

(21) Application number: 13742570.8

(22) Date of filing: 17.07.2013
(51) International Patent Classification (IPC): 
B29C 35/12(2006.01)
B29C 33/18(2006.01)
B29C 70/74(2006.01)
 B29C 44/34(2006.01)
B29C 44/54(2006.01)
B65D 81/03(2006.01)
(86) International application number:
PCT/US2013/050928
(87) International publication number:
WO 2014/015060 (23.01.2014 Gazette 2014/04)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 20.07.2012 US 201261674110 P

(71) Applicant: LBP Manufacturing, Inc.
Cicero, IL 60804 (US)

(72) Inventors:
  • FU, Thomas, Z.
    Naperville, IL 60564 (US)
  • COOK, Matthew, R.
    Oak Brook, IL 60523 (US)
  • ELLIS, Earle, R.
    Westchester, IL 60154 (US)

(74) Representative: Klunker . Schmitt-Nilson . Hirsch 
Patentanwälte Destouchesstraße 68
80796 München
80796 München (DE)

   


(54) MICROWAVE HEATING OF HEAT-EXPANDABLE MATERIALS FOR MAKING PACKAGING SUBSTRATES AND PRODUCTS