Cushioning sheet

Patent metadata

Field	Value
Publication number	US-12466154-B2
Application number	US-202519043816-A
Country	US
Kind code	B2
Filing date	Feb 3, 2025
Priority date	Jul 30, 2020
Publication date	Nov 11, 2025
Grant date	Nov 11, 2025

Abstract

A cushioning sheet includes a first layer defining a first inner surface; a second layer coupled to the first layer, the second layer defining a second inner surface facing the first inner surface so that the first inner surface and the second inner surface define a plurality of voids therebetween; and a plurality of cushioning inserts disposed between the first layer and the second layer, wherein each of the plurality of cushioning inserts is received in a corresponding one of the voids, and each void has a diameter that is larger than a diameter of the cushioning insert disposed therein so that each void is configured to loosely receive the cushioning insert disposed therein.

First claim

That which is claimed is:

1 . A cushioning sheet comprising:
a first layer defining a first inner surface; a second layer coupled to the first layer, the second layer defining a second inner surface facing the first inner surface so that the first inner surface and the second inner surface define a plurality of voids therebetween; and a plurality of cushioning inserts disposed between the first layer and the second layer, wherein each of the plurality of cushioning inserts is received in a corresponding one of the voids, and each void has a diameter that is larger than a diameter of the cushioning insert disposed therein so that each void is configured to loosely receive the cushioning insert disposed therein.

2 . The cushioning sheet of claim 1 , wherein the first layer is a first paper layer and the second layer is a second paper layer.

3 . The cushioning sheet of claim 2 , wherein each of the first paper layer and the second paper layer comprise a tissue-grade paper material.

4 . The cushioning sheet of claim 2 , wherein each of the first paper layer and the second paper layer are covered with a coating to increase strength and maintain flexibility of the first paper layer and the second paper layer.

5 . The cushioning sheet of claim 2 , wherein the first paper layer is substantially identical to the second paper layer.

6 . The cushioning sheet of claim 2 , wherein each of the plurality of cushioning inserts comprises a starch material, and wherein the starch material is repulpable.

7 . The cushioning sheet of claim 6 , wherein the starch material is a corn starch material.

8 . The cushioning sheet of claim 6 , wherein each of the plurality of cushioning inserts is substantially spherical in shape.

9 . The cushioning sheet of claim 8 , wherein a diameter of each of the plurality of cushioning inserts is about 0.375 inches.

10 . The cushioning sheet of claim 1 , wherein the second layer is coupled to the first layer by an adhesive.

11 . The cushioning sheet of claim 10 , wherein the adhesive is a starch paste, and wherein the starch paste is repulpable.

12 . The cushioning sheet of claim 10 , wherein:
the cushioning sheet defines a first side, a second side opposite the first side, a first end, and a second end opposite the first end; and the first layer is adhered to the second layer by the adhesive at the first side, the second side, the first end, and the second end.

13 . The cushioning sheet of claim 12 , wherein the plurality of cushioning inserts are offset from the first side, the second side, the first end, and the second end towards a center of the cushioning sheet.

14 . The cushioning sheet of claim 13 , wherein:
each of the first layer and the second layer defines a first side sealing flap and a second side sealing flap opposite the first side sealing flap; the first side sealing flap of the first layer is adhered to the first side sealing flap of the second layer at the first side of the cushioning sheet; and the second side sealing flap of the first layer is adhered to the second side sealing flap of the second layer at the second side of the cushioning sheet.

15 . The cushioning sheet of claim 10 , wherein at least some of the plurality of cushioning inserts are adhered to at least one of the first layer or the second layer by the adhesive.

16 . The cushioning sheet of claim 10 , wherein:
the adhesive is a first adhesive; and at least some of the plurality of cushioning inserts are adhered to at least one of the first layer or the second layer by a second adhesive that is different from the first adhesive.

17 . The cushioning sheet of claim 16 , wherein the second adhesive is a polyvinyl acetate glue.

18 . The cushioning sheet of claim 1 , wherein each void is defined by at least a first socket defined in the first layer.

19 . The cushioning sheet of claim 18 , wherein each void is further defined by at least a second socket defined in the second layer.

20 . The cushioning sheet of claim 19 , wherein each first and second socket is semi-spherical in shape.

Assignees

• Pratt Corrugated Holdings Inc

Inventors

• Sollie Greg
• Stanton Christopher M

Classifications

• B65D81/02

  specially adapted to protect contents from mechanical damage {(containers of polygonal cross-section provided with internal protecting elements for contents B65D5/50; devices to locate articles in containers B65D25/10)} · CPC title

• B32B37/0053

  Constructional details of laminating machines comprising rollers; Constructional features of the rollers · CPC title

• B32B2307/558

  Impact strength, toughness · CPC title

• B65D27/14

  using adhesive applied to integral parts, e.g. flaps · CPC title

• B65D81/03

  Wrappers or envelopes with shock-absorbing properties, e.g. bubble films {(for thermal insulating purposes B65D81/3888)} · CPC title