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What does Single Wall (SW) and Double Wall (DW) mean?

April 26, 2017double dw mean SW wall

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What does Single Wall (SW) and Double Wall (DW) mean?

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Corrugated cardboard has two main components: the linerboard and the medium. Both are made of a special kind of heavy paper. Linerboard is the flat facing that adheres to the medium. The medium is the wavy fluted paper in between the liners. Single Wall is manufactured with the medium between two sheets of linerboard. Double Wall has three sheets of linerboard with two mediums in between.