Jar assembly
The present disclosure is related to jars and containers and, more particularly, to the manufacture of readily recyclable jars and containers. An exemplary jar is comprised of an aluminum base and a first aluminum inner cup provided with a first cavity defined with the aluminum base. An outer thread is provided about an exterior surface of the aluminum base, and an aluminum lid with a second aluminum inner cup is provided within a second cavity defined within the aluminum lid. An inner thread mateable with the outer thread is provided about an interior surface of the second aluminum inner cup. A method of manufacturing readily recyclable jars can comprise providing a primary metal material and optionally applying a precoating to the primary metal material. The primary metal material may be formed into a jar with mating threads and a lid with mating threads. The primary metal material may optionally be finished. A liner may optionally be inserted. The lid and jar are then assembled, and a plastic cup may optionally be installed.
1 . A method of manufacturing a two-piece lid for a jar assembly, the method comprising:
forming a metal outer cap comprising a first sidewall and a cap top that together define a lid cavity;
forming a metal inner cap that is substantially cylindrical, wherein the inner cap comprises a second sidewall and a threading element provided about the second sidewall; and
bonding the metal inner cap within the lid cavity of the metal outer cap, such that the threading element is adjacent to the first sidewall, and such that the metal inner cap is fixed relative to the metal outer cap to inhibit relative movement between the metal inner cap and the metal outer cap,
wherein the bonding comprises adhesive bonding or welded bonding, and
wherein the metal outer cap and the metal inner cap are formed from a metal material, and the method further comprises precoating the metal material prior to forming the metal outer cap or the metal inner cap.
2 . The method of claim 1 , further comprising finishing a surface of the metal outer cap by anodization, plating, physical vapor deposition, micro arc oxidation, or thermal plasma spray.
3 . The method of claim 2 , wherein the finishing the surface of the metal outer cap is performed by anodizing the metal outer cap.
4 . The method of claim 3 , wherein the metal material is composed of a metal selected from the group consisting of aluminum alloys, steel, stainless steel, galvanized steel, and titanium.
5 . A method of manufacturing a two-piece lid for a jar assembly, the method comprising:
forming a metal outer cap comprising a first sidewall and a cap top that together define a lid cavity;
forming a metal inner cap that is substantially cylindrical, wherein the inner cap comprises a second sidewall and a threading element provided about the second sidewall;
bonding the metal inner cap within the lid cavity of the metal outer cap, such that the threading element is adjacent to the first sidewall, and such that the metal inner cap is fixed relative to the metal outer cap to inhibit relative movement between the metal inner cap and the metal outer cap; and
precoating a metal material from which the metal outer cap is formed by pre-anodizing the metal material or electroplating the metal material.
6 . The method of claim 1 , further comprising applying a polymeric coating to the metal inner cap.
7 . The method of claim 1 , wherein forming the metal outer cap comprises deep drawing the metal material, impact extruding the metal material, roll forming the metal material, or eyelet stamping the metal material.
8 . The method of claim 7 , wherein the metal material is selected from the group consisting of aluminum alloys, steel, precoated tin plate, stainless steel, galvanized steel, and titanium.
9 . A method of manufacturing a jar assembly, the method comprising:
forming a two-piece lid by bonding a metal inner cap to a metal outer cap while the metal inner cap is nested within a lid cavity defined by the metal outer cap, wherein the metal inner cap comprises a sidewall provided with a threading element such that the metal inner cap is fixed relative to the metal outer cap to inhibit relative movement between the metal inner cap and the metal outer cap; and
forming a base that defines another cavity of the jar assembly, wherein the base comprises an outer threading element provided about an exterior surface of the base, and wherein the inner threading element is mateable with the outer threading element;
wherein the bonding comprises adhesive bonding or welded bonding, and
wherein the metal outer cap and the metal inner cap are formed from a metal material, and the method further comprises precoating the metal material prior to forming the metal outer cap or the metal inner cap.
10 . The method of claim 9 , wherein the method further comprises anodizing the metal outer cap.
11 . The method of claim 10 , wherein the base is composed of metal, and wherein the method further comprises anodizing the base.
12 . A method of manufacturing a jar assembly, the method comprising:
forming a two-piece lid by bonding a metal inner cap to a metal outer cap while the metal inner cap is nested within a lid cavity defined by the metal outer cap, wherein the metal inner cap comprises a sidewall provided with a threading element such that the metal inner cap is fixed relative to the metal outer cap to inhibit relative movement between the metal inner cap and the metal outer cap;
forming a base that defines another cavity of the jar assembly, wherein the base comprises an outer threading element provided about an exterior surface of the base, and wherein the inner threading element is mateable with the outer threading element; and
removably installing an inner cup within the another cavity of the jar.
13 . The method of claim 12 , wherein the inner cup is plastic.
14 . The method of claim 9 , wherein the metal inner cap is positioned within the lid cavity such that an edge of the first sidewall is substantially parallel to an edge of the second sidewall.
15 . The method of claim 1 , wherein the metal is an aluminum alloy, and wherein the precoating the metal comprises precoating the aluminum alloy.
16 . The method of claim 1 , wherein precoating the metal material includes pre-anodizing the metal material.
17 . The method of claim 1 , wherein precoating the metal material includes plating the metal material.
18 . The method of claim 9 , wherein the metal is an aluminum alloy, and wherein the precoating the metal comprises precoating the aluminum alloy.
19 . The method of claim 9 , wherein precoating the metal material includes pre-anodizing the metal material.
20 . The method of claim 9 , wherein precoating the metal material includes plating the metal material.