Printing a duplex microwave interactive susceptor structure on cellulose-based substrates for sustainable microwave packaging
AssigneeFPInnovations
InventorsTingjie LI, Joseph Stephen ASPLER, Lyne M. CORMIER
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Abstract
The present invention relates to a microwave interactive susceptor structure for the microwave heating of food products. In one aspect, the invention relates to a duplex design for the microwave interactive structure on cellulose-based substrates. In another aspect, the invention relates to a method of patterning the duplex microwave interactive structure on the substrates using a printing press with or without an alignment function.
Claims19
A microwave interactive susceptor duplex structure comprising:
- a cellulose-based substrate layer including,
- a first surface and a second surface opposite each other,
- a first functional susceptor pattern on the first surface comprising:
- first microwave interactive areas interspersed by first
- non-microwave interactive areas, and
- a second functional susceptor pattern on the second surface comprising:
- second microwave interactive areas interspersed by second non-microwave interactive areas.
A multilayer microwave susceptor composite for enclosing a foodstuff to be heated, the composite comprising:
- a cellulose-based substrate layer including,
- a first surface and a second surface opposite each other;
- a first functional susceptor pattern on the first surface comprising:
- first microwave interactive areas interspersed by first non-microwave interactive areas, and
- a second functional susceptor pattern on the second surface comprising:
- second microwave interactive areas interspersed by second non-microwave interactive areas,
- a top ply layer, wherein the top ply layer is in contact with the food on the first surface, and
- a bottom layer on the second surface.
A method for producing a microwave interactive susceptor duplex structure comprising:
- providing a cellulose-based substrate layer including a first surface and a second surface opposite each other;
- producing a first functional susceptor pattern on the first surface by depositing a first microwave interactive material onto the first surface with first microwave interactive areas interspersed by first non-microwave interactive areas, and
- producing a second functional susceptor pattern on the second surface by depositing a second microwave interactive material onto the second surface with second microwave interactive areas interspersed by second non-microwave interactive areas.
The method of claim 16, wherein the flexo printing of the first surface and the second surface such that the first microwave interactive areas and the second microwave interactive areas are staggered.
Dependencies are inferred from the claim text.