US 12,459,719 B2
Cushioning material and packaged product
Michiko Kawaji, Yamanashi (JP)
Assigned to Seiko Epson Corporation, Tokyo (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Sep. 13, 2023, as Appl. No. 18/466,020.
Claims priority of application No. 2022-146703 (JP), filed on Sep. 15, 2022.
Prior Publication US 2024/0092553 A1, Mar. 21, 2024
Int. Cl. B65D 81/02 (2006.01); B65D 81/05 (2006.01); B65D 81/127 (2006.01)
CPC B65D 81/127 (2013.01) [B65D 81/057 (2013.01); B65D 2581/053 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A cushioning material having a multilayer structure, the cushioning material comprising:
a first layer including
a first flat plate portion extending in a first direction in which the cushioning material extends and having a flat plate shape,
a second flat plate portion extending in the first direction and having a flat plate shape, and
a first support portion provided between the first flat plate portion and the second flat plate portion, the first support portion including a plurality of corrugated portions that are periodically arranged, each of the plurality of corrugated portions of the first support portion having
a first support body coupled to the first flat plate portion at a first coupling point and coupled to the second flat plate portion at a second coupling point located in the first direction from the first coupling point, and
a second support body coupled to the second flat plate portion at the second coupling point and coupled to the first flat plate portion at a third coupling point located in the first direction from the second coupling point, and
a length of the first support body and a length of the second support body being different from each other, such that a strength of the first layer in a second direction is stronger than a strength of the first layer in the first direction the second direction being a direction in which the cushioning material extends and is opposite to the first direction; and
a second layer including
a third flat plate portion extending in the first direction and having a flat plate shape,
a fourth flat plate portion extending in the first direction and having a flat plate shape, and
a second support portion provided between the third flat plate portion and the fourth flat plate portion, the second support portion including a plurality of corrugated portions that are periodically arranged, each of the plurality of corrugated portions of the second support portion having
a third support body coupled to the third flat plate portion at a fourth coupling point and coupled to the fourth flat plate portion at a fifth coupling point located in the first direction from the fourth coupling point, and
a fourth support body coupled to the fourth flat plate portion at the fifth coupling point and coupled to the third flat plate portion at a sixth coupling point located in the first direction from the fifth coupling point, and
a length of the third support body and a length of the fourth support body being different from each other, such that a strength of the second layer in the first direction is stronger than a strength of the second layer in the second direction.