EP1802456A1 - Procede de fabrication de recipients, tels que casseroles, poeles et similaires, et recipients ainsi fabriques - Google Patents

Procede de fabrication de recipients, tels que casseroles, poeles et similaires, et recipients ainsi fabriques

Info

Publication number
EP1802456A1
EP1802456A1 EP04791895A EP04791895A EP1802456A1 EP 1802456 A1 EP1802456 A1 EP 1802456A1 EP 04791895 A EP04791895 A EP 04791895A EP 04791895 A EP04791895 A EP 04791895A EP 1802456 A1 EP1802456 A1 EP 1802456A1
Authority
EP
European Patent Office
Prior art keywords
container
layer
container according
plate
aluminium
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP04791895A
Other languages
German (de)
English (en)
Inventor
Fabrizio Coppi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bialetti Industrie SpA
Original Assignee
Bialetti Industrie SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bialetti Industrie SpA filed Critical Bialetti Industrie SpA
Publication of EP1802456A1 publication Critical patent/EP1802456A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J36/00—Parts, details or accessories of cooking-vessels
    • A47J36/02—Selection of specific materials, e.g. heavy bottoms with copper inlay or with insulating inlay
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B1/00—Layered products having a non-planar shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
    • B32B15/012—Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of an iron alloy or steel, another layer being formed of aluminium or an aluminium alloy
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
    • B32B15/013—Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of an iron alloy or steel, another layer being formed of a metal other than iron or aluminium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/043—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/18—Layered products comprising a layer of metal comprising iron or steel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/44—Number of layers variable across the laminate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/06—Coating on the layer surface on metal layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/202—Conductive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
    • B32B2307/208—Magnetic, paramagnetic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/302—Conductive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/746—Slipping, anti-blocking, low friction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00—Containers; Receptacles
    • B32B2439/02—Open containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00—Containers; Receptacles
    • B32B2439/70—Food packaging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2509/00—Household appliances

Definitions

  • induction cooking plates i.e. cooking plates capable of heating a saucepan by currents induced by a magnetic field - are increasingly used by consumers.
  • saucepans that can be used on induction cooking plates generally comprise an aluminium container, on the bottom of which a steel plate is subsequently applied adapted for heating by the magnetic field action. [0004] .
  • saucepans manufactured according to the above exhibit some disadvantages.
  • It is an object of the present invention providing a method for manufacturing a container for cooking food., for example a saucepan, a frying pan and the like, especially adapted for being used in conjunction with induction plates, overcoming the disadvantages mentioned with reference to the prior art.
  • Such object is achieved by a manufacturing method according to claim 1.
  • the dependent claims describe embodiment variants.
  • such object is achieved by a container for cooking food according to claim 17.
  • the dependent claims describe embodiment variants.
  • Container 1 comprises a bottom 2 adapted for resting on a cooking plate.
  • Said bottom 2 comprises an inner layer 4 made of a first material, preferably non-ferromagnetic, for example aluminium or aluminium alloy, and an outer layer 6 made of a ferromagnetic material, for example steel .
  • container 1 comprises a side wall 8, jointed to said bottom 2 adapted for containing said food.
  • the side wall 8 comprises an inner layer 10, made of said first non- ferromagnetic material, and an intermediate layer 12 made of said ferromagnetic material .
  • the side wall 8 comprises an outer layer 14 made of a second material, preferably non- ferromagnetic, for example the same as said first non- ferromagnetic material, for example aluminium or aluminium alloy .
  • container [ 0019] . According to a preferred embodiment , container
  • container 1 exhibits at least one portion comprising at least one non- sticking material layer , for example
  • Container 1 can be manufactured according to a manufacturing method, comprising a step of realising a multilayer plate 16 comprising an upper layer 18 made of a first material, an intermediate layer 20 made of ferromagnetic material and a lower layer 22 made of a second material.
  • the step of realising the multilayer plate comprises the step of associating the uppex- surface and the lower surface of a sheet made of ferromagnetic material, which realises said intermediate layer 20 of the plate, to a sheet made of a first non—ferromagnetic material and a sheet made of a second non-ferromagnetic material, respectively, which "will realise said upper layer and said lower layer of the plate.
  • said step of association comprises the step of hot-rolling said sheet made of ferromagneti c; material and said sheets made of non- ferromagneti c materials .
  • said hot -rolling step is carried out for the two non-ferromag-netic sheets at the same time .
  • said manuf acturing method comprises the step of subj ecting said multilayer plate 16 to a. pressing process for obtaining said multilayeir container 1 .
  • Container 1 thus manufactured comprises bottom 2 and the side wall 8 .
  • the lower layer 22 of plate 16 realises a surplus layer 30 of bottom 2 and the out ear layer 14 of the side wall 8 .
  • the intermediate layer 2 O of plate 16 realises the outer" layer 6 of bottom 2 and. the intermediate layer 12 of the side wall 8 .
  • the upper layer 18 of plate 16 realises the inner layer 4 of bottom 2 and the inner layer 10 of the side wall 8 .
  • the step of subj ecting the multilayer plate 16 to a pres sing process comprises the step of hot- and cold- compres sing said plate between a. die and a dolly.
  • said manufacturing method comprises a. step of removing said surplus layer 30 from the bottom 2 of container 1 for exposing the outer layer 6 of bottom 2 .
  • said step of removal comprises the step of tool -processing said containezt-r , for example by milling, turning or grinding .
  • said marxufacturing method comprises a step of partly coating said container 1 .
  • Said coating step is preferably carir ied out prior to said removal step .
  • the container according to the present invention is especially adapted to be used in conjunction with induction plates , while keeping excellent corrosion resistance a.nd coatability characteristics .
  • said container exhibits the inner surface made off aluminium, and therefore especially smooth and f ree f rom carvings , cracks and micro-damages , it en sures excellent inside heat distribution .
  • the ferromagnetic material develops along the entire side wall , thus allowing the magnetic field generated by the plates to originate induced currents and therefore heat production, also at the side walls .
  • the container exhibits the advantage of a direct contact between the induction plate anci the ferromagnetic material of the bottom, thereby impl_ying high performance in the energy transformation of the magnetic field into useful heat to be transmitted to the food inside the container.
  • the container on its side outer wall the container exhibits an aluminium layer, excellent for coating and adapted for obtaining very good surface finishes .
  • the method for manufacturing the container allows realising a much low-cost production, also from the point of vie ⁇ v of investments for setting up the production line.
  • said non- ferromagnetic material is selected from the group comprising copper, tin or other non-ferrous material.
  • a coining or- forging is carried out at the same time as pressing to impress a decorative pattern.
  • said step of coating is carried out prior to the step of subjecting the plate to a pressing process.
  • said method and said container caix respectively be realised and manufactured with a plates wherein the non-ferromagnetic material-ferromagnetic; material-non-ferromagnetic material sequence is repeated! several times.
  • container 1 comprises a bottom 2, comprising an inner- layer 4 made of a first material, an intermediate layer made of a ferromagnetic material and an outerr layer 14 made of a second material.
  • container 1 comprises a side wall 8, jointed to said bottom 2 adapted for containing saicl food.
  • Said bottom outer layer is adapted for being- crossed by a magnetic field for impinging the intermediate layer made of ferromagnetic material, so as to cook food.
  • said outer layer of the bottom is realised by impingement in a fused bath.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Cookers (AREA)

Abstract

Cette invention concerne un procédé servant à fabriquer une casserole, une poêle ou similaire et consistant à cet effet à réaliser une plaque multicouche aluminium-acier-aluminium, à soumettre cette plaque à un pressage pour obtenir la casserole (1), dont le fond (2) présente une couche excédentaire (30) en aluminium, et à retirer cette couche excédentaire (30) du fond (2), ou à réaliser ce fond en une épaisseur appropriée pour qu'il puisse être traversé efficacement par un champ magnétique, cette épaisseur pouvant par exemple atteindre 30 microns.
EP04791895A 2004-10-08 2004-10-08 Procede de fabrication de recipients, tels que casseroles, poeles et similaires, et recipients ainsi fabriques Withdrawn EP1802456A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2004/000561 WO2006038237A1 (fr) 2004-10-08 2004-10-08 Procede de fabrication de recipients, tels que casseroles, poeles et similaires, et recipients ainsi fabriques

Publications (1)

Publication Number Publication Date
EP1802456A1 true EP1802456A1 (fr) 2007-07-04

Family

ID=34959270

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04791895A Withdrawn EP1802456A1 (fr) 2004-10-08 2004-10-08 Procede de fabrication de recipients, tels que casseroles, poeles et similaires, et recipients ainsi fabriques

Country Status (2)

Country Link
EP (1) EP1802456A1 (fr)
WO (1) WO2006038237A1 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1451229A (en) * 1973-01-24 1976-09-29 Racz N S Cooking utensil of laminate form
NO152483C (no) * 1982-12-14 1985-10-09 Ardal Og Sunndal Verk Kokekar av rustfritt staal for alle typer oppvarmingskilder
JPS603693U (ja) * 1983-06-20 1985-01-11 株式会社日本アルミ 電磁調理器用鍋
DE59407882D1 (de) * 1994-03-18 1999-04-08 Clad Lizenz Ag Mehrschichtiger, kaltverformbarer und tiefziehfähiger Verbundkörper aus Metall
FR2786504B1 (fr) * 1998-12-01 2001-01-05 Imphy Sa Recipient culinaire pour chauffage par induction et alliage pour realiser un tel recipient
EP1455622B1 (fr) * 2001-11-30 2005-10-19 Imphy Alloys Recipient de cuisine comprenant une base constituee d'un materiau multicouche et une paroi laterale, et article de materiau multicouche
US6926971B2 (en) * 2002-06-28 2005-08-09 All-Clad Metalcrafters Llc Bonded metal components having uniform thermal conductivity characteristics and method of making same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006038237A1 *

Also Published As

Publication number Publication date
WO2006038237A1 (fr) 2006-04-13

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