US 12,134,839 B2
Method of manufacturing cushioning material, and cushioning material
Satomi Yoshioka, Nagano (JP)
Assigned to Seiko Epson Corporation, Tokyo (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Jan. 30, 2023, as Appl. No. 18/161,109.
Claims priority of application No. 2022-012885 (JP), filed on Jan. 31, 2022.
Prior Publication US 2023/0243091 A1, Aug. 3, 2023
Int. Cl. D01G 11/04 (2006.01); D01G 13/00 (2006.01); D01G 21/00 (2006.01); D21B 1/06 (2006.01); D06M 14/04 (2006.01); D06M 14/06 (2006.01)
CPC D01G 11/04 (2013.01) [D01G 13/00 (2013.01); D01G 21/00 (2013.01); D21B 1/06 (2013.01); D06M 14/04 (2013.01); D06M 14/06 (2013.01); D10B 2201/02 (2013.01); D10B 2211/02 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method of manufacturing a cushioning material for an object to be packed, the method comprising:
a defibrating step of defibrating, in dry forming, a cloth to produce fibers that have an aspect ratio of 0.9 or less;
a mixing step of mixing the fibers with a bonding agent to produce a mixture;
an accumulation step of accumulating the mixture in air to produce a web;
a first forming step of pressurizing and heating the web to form the cushioning material; and
a second forming step of, after the first forming step, forming a concave portion by pressurizing a predetermined portion of the cushioning material such that the concave portion has a shape conforming to a three-dimensional shape of the object to be packed.