Beverage can end score tooling

Patent metadata

Field	Value
Publication number	US-2016354832-A1
Application number	US-201615175679-A
Country	US
Kind code	A1
Filing date	Jun 7, 2016
Priority date	Jun 8, 2015
Publication date	Dec 8, 2016
Grant date	—

Abstract

A system for forming a score in a material includes an aluminum can and a tool. The aluminum can includes a can end, and an interior of the can end includes a coating. The tool includes a tool holder and a scoring knife. The scoring knife includes a proximal end configured to form the score in the can end. The proximal end has a width configured to minimize feathering of the coating when the score is punctured.

First claim

That which is claimed is:

1 . A system for forming a score in a material comprising:
an aluminum can comprising a can end, wherein an interior of the can end comprises a coating; and a scoring knife comprising a proximal end configured to form the score in the can end, the proximal end having a width configured to minimize feathering of the coating when the score is punctured.

2 . The system of claim 1 , wherein the coating is a laminate coating.

3 . The system of claim 1 , wherein the width of the proximal end is between approximately 0.0005 inches and approximately 0.0020 inches.

4 . The system of claim 3 , wherein the width of the proximal end is between approximately 0.0005 inches and approximately 0.0015 inches.

5 . The system of claim 3 , wherein the width of the proximal end is between approximately 0.0005 inches and approximately 0.00125 inches.

6 . The system of claim 3 , wherein the width of the proximal end is between approximately 0.0005 inches and approximately 0.00075 inches.

7 . The system of claim 1 , wherein the scoring knife comprises sides that, when viewed in cross-section, are separated from one another by approximately 50 degrees to approximately 75 degrees.

8 . The system of claim 7 , wherein the sides are separated from another by approximately 60 degrees to approximately 70 degrees.

9 . The system of claim 7 , wherein the sides are separated from another by approximately 65 degrees to approximately 70 degrees.

10 . The system of claim 1 , wherein the proximal end is configured such that a mean size of any coating depressions formed in the coating is less than approximately 0.0004 inches.

11 . The system of claim 10 , wherein the mean size of any coating depressions is less than approximately 0.0003 inches.

12 . The system of claim 10 , wherein the mean size of any coating depressions is less than approximately 0.0002 inches.

13 . The system of claim 10 , wherein the mean size of any coating depressions is less than approximately 0.0001 inches.

14 . A tool for scoring an end of an aluminum can, the tool comprising:
a tool holder; and a scoring knife comprising a proximal end, the proximal end having a width configured form a score in the aluminum can and to minimize feathering of a coating of the aluminum can when the score is punctured.

15 . The tool of claim 14 , wherein the width of the proximal end is between approximately 0.0005 inches and approximately 0.0020 inches.

16 . The tool of claim 15 , wherein the width of the proximal end is between approximately 0.0005 inches and approximately 0.0015 inches.

17 . The tool of claim 15 , wherein the width of the proximal end is between approximately 0.0005 inches and approximately 0.00125 inches.

18 . The tool of claim 15 , wherein the width of the proximal end is between approximately 0.0005 inches and approximately 0.00075 inches.

19 . The tool of claim 14 , wherein the scoring knife comprises sides that, when viewed in cross-section, are separated from one another by approximately 50 degrees to approximately 75 degrees.

20 . The tool of claim 19 , wherein the sides are separated from another by approximately 60 degrees to approximately 70 degrees.

Assignees

• Novelis Inc

Inventors

• Brown Mckay C
• Hegadekatte Vishwanath

Classifications

• B21D51/383 Primary

  scoring lines, tear strips or pulling tabs · CPC title

• B65D25/14

  Linings or internal coatings (of containers made by folding or erecting blanks made of paper B65D5/56 {; linings for domestic water storage heaters F24H1/183}) · CPC title

• B65D17/165

  Operations & Transport · mapped topic

• B65D1/12

  Cans, casks, barrels, or drums · CPC title

• B65D2517/0013

  pull-out tear panel, e.g. by means of a tear-tab · CPC title