# US 5,328,732 A · Cylindrical package stuffing material

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- Number: US 5,328,732 A
- Document ID: US5328732A
- Status: Granted
- Kind: A
- Application number: 08/030,776
- Filed: 1993-03-12
- Granted: 1994-07-12
- Earliest claimed: 1993-03-12
- Inventors: Douglas J. Renna
- Web page: https://patentgrep.com/patent/US5328732A

## CPC

- B31C 1/00: Making tubes or pipes by feeding at right angles to the winding mandrel centre line
- B65D 81/09: using flowable discrete elements of shock-absorbing material, e.g. pellets or popcorn
- Y10S 206/814: Space filler
- Y10T 428/1303: Paper containing [e.g., paperboard, cardboard, fiberboard, etc.]
- Y10T 428/8305: Miscellaneous [e.g., treated surfaces, etc.]
- B31C: MAKING WOUND ARTICLES, e.g. WOUND TUBES, OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B65D: CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

Package stuffing material is formed by rolling strips of relatively rigid paper stock to cylindrical bodies. The strip is rolled so that the outer longitudinal edge is adhered to the outer surface of the cylinder while the inner end hangs free. The inner end extends between a 90.degree. to 180.degree. arc along the inner wall and when the cylindrical is pressed its edge engages the wall substantially limiting the degree of distortion.

## Claims

### Claim 1

Package stuffing material comprising a plurality of hollow bodies adapted to fill a volume greater than the sum of their individual volumes, each body comprising a strip of shape retaining paper stock material rolled into a cylinder having its outer end adhered adjacent its longitudinal edge to the outer surface of the cylinder and having its inner end freely extending along the inner wall of said cylinder so as to be circumferential slidable therealong to place its free inner longitudinal edge in engagement with the inner wall on application of a radial force to the cylinder.

### Claim 2 (depends on 1)

The material according to claim 1, wherein said inner end extends between 90.degree. and 180.degree. arc about the inner wall of said cylinder.

### Claim 3 (depends on 1)

The material according to claim 1, wherein said paper stock is semi-rigid paper stock of between 40 lb. and 120 lb. weight.