High-frequency heatable plastics
AssigneeThe Dow Chemical Company
InventorsGerald M. Lancaster, James A. Allen
Life of this patent
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Abstract
Olefin polymers which are unsuited, or ill-suited, for heating, sealing, or bonding by the action of high-frequency electromagnetic radiation, especially microwave radiation, are rendered heatable by such radiation by incorporating carbon monoxide, as a comonomer, into the polymer structure.
Claims20
A high-frequency electromagnetic radiation sealable multi-ply article comprising two (a) plies in sealable contact with each other, with their reverse surfaces in sealable contact with (b) plies,
- wherein each (a) ply comprises an olefin/carbon monoxide interpolymer in which about 0.1% to about 50% of the interpolymer weight is atrributable to carbon monoxide, and each (b) ply comprises a material which is unsuited or ill-suited as a high-frequency electromagnetic radiation sealable material.
A high-frequency electromagnetic radiation sealable multi-ply article comprising an (a) ply between a first (b) ply and a second (b) ply, wherein the first (b) ply is a lid or cap of a container and the second (b) ply is a container which is to be closed by the first (b) ply,
- wherein the (a) ply comprises an olefin/carbon monoxide interpolymer in which about 0.1% to about 50% of the interpolymer weight is attributable to carbon monoxide, and each (b) ply comprises a material which is unsuited or ill-suited as a high-frequency electromagnetic radiation sealable material.
Dependencies are inferred from the claim text.