A method for manufacturing a wastepaper shock absorbing material using a
vacuum forming principle is provided. The method includes disintegrating
wastepaper selected from at least one of old corrugated containers, old
newspapers and milk cartons, diluting the disintegrated wastepaper to
form a pulp suspension, mixing the pulp suspension with a cationic starch
to form a mixture, and vacuuming the mixture by applying a first vacuum
in a first direction and a second vacuum in a second direction in a
vacuum former to vacuum-dehydrate the mixture and provide a shock
absorbing material. The first direction is substantially opposite to the
second direction. The method further includes drying the shock absorbing
material and performing a surface sizing process on a surface of the
shock absorbing material. The wastepaper shock absorbing material has a
low elastic modulus and density and can be manufactured without using the
conventional press process performed by a press plate.