| 摘要 |
The disclosure relates to a method of producing a blank ( 50 a, 50 b) of thermosealable and creased packaging laminate for a microwave-friendly packaging container, comprising the steps of: (a) advancing a continuous web ( 1 ) of a base laminate ( 10 ) in a conversion line for the packaging laminate so that continuous blanks for said packaging containers are oriented with their top-to-bottom direction transversely of the machine direction of the conversion line and with a top-to-bottom interface ( 51 ), (b) providing said base laminate ( 10 ) with creases and cutting into said blanks ( 50 a, 50 b) of the packaging laminate, a continuous strip ( 2 ) of a material which conducts heat and electricity being applied in the machine direction in a region over said top-to-top/bottom interface ( 51 ) and in conjunction with step (a), and an elongate opening indication ( 53 ) being provided, before or after the application of the strip ( 2 ) so that the opening indication is positioned within the region of said strip. The disclosure also relates to a thus produced blank, as well as a packaging container which is formed using such a blank as the point of departure.
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