Container and method for producing a container

Patent metadata

Field	Value
Publication number	US-12358684-B2
Application number	US-202218069963-A
Country	US
Kind code	B2
Filing date	Dec 21, 2022
Priority date	Dec 21, 2021
Publication date	Jul 15, 2025
Grant date	Jul 15, 2025

Abstract

The present disclosure relates to a mesh container and a method of making a mesh container that has a first and a second set of opposing side panels, a bottom panel, and a rim directed outwards from the upper edges of the side panels. At least two adjacent sides panels of the container and portion of the rim directed outwardly from the upper edge of the side panels are made from a sheet metal precursor with least one perforated and a stretched portion and unstretched metal portion. The precursor is folded so that the unstretched metal portion joins the two side panels and is bent to form the rim. A notch is cut from the edge of the unstretched metal portion where it is bent at the corner formed by the two side panels.

First claim

The invention claimed is:

1. A method for producing a container made of a metal mesh, the container comprising a first and a second set of opposing side panels that form four sides of the container with four corners, a bottom panel joined to the first and second sets of opposing side panels, and a rim directed outwardly from upper edges of the side panels and extending around at least one of the four corners, wherein the method comprises:
cutting at least one precursor from a web comprising a metal mesh portion and an unstretched metal portion, the precursor comprising both metal mesh and unstretched metal; and
folding the at least one precursor to form in one piece at least a portion of the container, the portion of the container comprising at least two side panels, one from each of the first set and second sets of side panels, that are adjacent and form a corner, the at least two side panels being joined by the unstretched metal that is bent to form at least a portion of the rim the extends outwardly from the adjacent side panels and bent at a corner of the container defined by the adjacent side panels;
wherein the precursor has a notch extending inwardly from an edge of the unstretched metal where the portion of the outwardly extending rim is bent at the corner of the container; and
wherein the notch is formed with a tab in a middle of the notch.

2. The method according to claim 1 , wherein the notch is formed when the precursor is cut from the web.

3. The method according to claim 1 , wherein the tab projects 1-6 mm from a lower edge of the notch and is between 25-40 mm wide at its base.

4. The method according to claim 1 , wherein the notch is between 3 and 7 mm deep, as measured from the edge of the unstretched metal of the precursor before a cut is made to form the notch.

5. The method according to claim 1 , wherein the notch is between 35 and 50 mm wide along a lower edge of the notch.

6. The method according to claim 1 , wherein a width of the notch tapers inwardly.

7. The method according to claim 1 , further comprising forming a downwardly projecting flange along the portion of the outwardly extending rim, when the flange is formed by bending the unstretched metal forming the portion of the rim prior to bending the portion of the rim at the corner of the container.

8. The method according to claim 7 , wherein an inwardly projecting portion is bent from the downwards projecting flange after bending the rim at the corner of the container.

9. The method of claim 1 , wherein the web is produced by perforating a sheet metal web to form at least one perforated portion and at least one unperforated portion and expanding the at least one perforated portion along an expansion direction to form the at least one metal mesh portion and the at least one unstretched metal portion.

10. A method for producing a container in mesh material, the container comprising expanded sheet metal, the container having a first and a second set of opposing side panels, a bottom panel, and a rim directed outwards from upper edges of the side panels, the method comprising:
perforating and expanding a web of sheet metal along an expansion direction to form said mesh material, while leaving at least one portion of the web unstretched,
cutting at least one precursor from the web,
folding a container including said at least one precursor wherein said at least one precursor makes up, in one piece, at least a side panel in the first set of side panels and a side panel in the second set of side panels, which are joined by said unstretched portion which is bent to form a corner of the rim, wherein the unstretched portion is cut such that a tab projects from the edge of the unstretched portion where said corner of the rim is to be made.

11. The method according to claim 10 , wherein the tab extends 1-6 mm from said edge and is between 25-40 mm wide at its base.

12. The method according to claim 10 , wherein a notch is cut in the unstretched portion with the tab in a middle of the notch.

13. The method according to claim 12 , wherein the notch is between 3 and 7 mm deep, as measured from the edge of the unstretched metal of the precursor before a cut is made to form the notch.

14. The method according to claim 12 , wherein the notch is between 35 and 50 mm wide along a lower edge of the notch.

15. The method according to claim 12 , wherein a width of the notch tapers inwardly.

16. The method according to claim 10 , further comprising forming a downwardly projecting flange along the portion of the outwardly extending rim when the flange is formed by bending the unstretched metal forming the portion of the rim before bending the portion of the rim at the corner of the container.

17. The method according to claim 16 , wherein an inwardly projecting portion is bent from the downwards projecting flange after bending the rim at the corner of the container.

Assignees

• Elfa Int Ab

Inventors

• Nilsson Peter
• Ringenhag Tobias

Classifications

• B65D7/08

  Trays or like containers without lids · CPC title

• B21D51/52

  boxes, cigarette cases, or the like · CPC title

• B21D28/26

  in sheets or flat parts · CPC title

• B21D5/16

  Folding; Pleating · CPC title

• B21D31/04

  Expanding other than provided for in groups B21D1/00 - B21D28/00, e.g. for making expanded metal (B21D47/00 takes precedence; enlarging tube ends B21D41/02) · CPC title