| 摘要 |
A drip-proof inset includes a bottom and a U-shaped border surrounding the same, which border is composed of two side pieces and one back piece. Initially, the inset is in the shape of a plane sheet (A) that includes a number of scorings. Namely, two first scorings ( 8 ), along which two side pieces ( 3' ) can be turned up at an angle to a bottom-forming part ( 1' ) of the sheet, a second scoring ( 9 ), along which a back piece ( 4' ) can be turned up at an angle to the bottom sheet part ( 1' ), as well as at least one additional, third scoring ( 11 ) that extends halfway between two opposite edges ( 7 ) of the sheet in order to, before turning-up of said back and side pieces, enable folding of the sheet in the middle during formation of two folded-up sheet halves having a halved surface area.
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