Spring type paper cushion
View Patent ↗A spring type paper cushion having a columnar body, at least four cushioning recesses, at least four projections and a receiving portion. The columnar body has a columnar wall and an axis. The cushioning recesses and the projections are formed on the columnar wall. The projections are respectively located between two of the cushioning recesses. The receiving portion is recessed into the columnar wall and is located at one of the cushioning recesses. The receiving portion has two receiving mountain-fold lines, two slits and a bottom. The slits are cut so that the two receiving mountain-fold lines can be folded allowing the bottom to sink into the body.
1. A paper cushion comprising
a columnar body comprising
a body first end;
a body second end;
a columnar wall;
an axis;
at least four cushioning recesses formed on the columnar wall and each comprising
a cushioning valley-fold line folded inwards parallel to the axis of the body;
two cushioning mountain-fold lines folded outwards parallel to the cushioning valley-fold line and respectively located beside the cushioning valley-fold line;
at least four projections formed on the columnar wall and each respectively located between two of the cushioning recesses;
a receiving portion recessing into the columnar wall, located at one of the cushioning recesses and comprising
two receiving mountain-fold lines folded outwards and flanking the one cushioning recess parallel to the cushioning mountain-fold lines on the columnar wall and each comprising
a receiving mountain-fold first end;
a receiving mountain-fold second end;
two slits, respectively connecting the receiving mountain-fold first ends of the two receiving mountain-fold lines and the receiving mountain-fold second ends of the two receiving mountain-fold lines;
a bottom located amongst the two receiving mountain-fold lines and the two slits, formed on the columnar wall and comprising two receiving valley-fold lines parallel to the two receiving mountain-fold lines.