Cardboard material classification: Cardboard material is classified according to unit area weight, mainly including the following cardboard materials: K paper: 250g/m² A paper: 175g/m² B paper: 125g/m² 7 paper: 200g/m² 8 paper: 260g/m² C paper: 127g/m² Core paper: basic 100g/m² large machine 105-110g/m² Strengthened core paper: + paper 115g/m² Cartons are commonly used with three layers and five layers, and seven layers are less used. Each layer is divided into lining paper, corrugated paper, core paper, and face paper. The lining and face paper are tea board paper and kraft paper. The core paper is corrugated paper. The color and feel of various papers are different. The paper (color, feel) produced by different manufacturers is also different. The national standard for corrugated boxes is GB6543-86 "Corrugated Boxes".
Material of cardboard box
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