EP1452242A2 - Revêtement antiadhésif à motifs décoratifs - Google Patents

Revêtement antiadhésif à motifs décoratifs Download PDF

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Publication number
EP1452242A2
EP1452242A2 EP04012916A EP04012916A EP1452242A2 EP 1452242 A2 EP1452242 A2 EP 1452242A2 EP 04012916 A EP04012916 A EP 04012916A EP 04012916 A EP04012916 A EP 04012916A EP 1452242 A2 EP1452242 A2 EP 1452242A2
Authority
EP
European Patent Office
Prior art keywords
coating
flakes
pattern
die
substrate
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Withdrawn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
EP04012916A
Other languages
German (de)
English (en)
Other versions
EP1452242A3 (fr
Inventor
Kenneth Batzar
Jeffrey Hugh Hamilton
Christopher Mark Rey
Thomas J Leck
Alan Charles Herzer
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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
Priority claimed from US09/144,766 external-priority patent/US6103361A/en
Application filed by EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of EP1452242A2 publication Critical patent/EP1452242A2/fr
Publication of EP1452242A3 publication Critical patent/EP1452242A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/20—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by magnetic fields
    • B05D3/207—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by magnetic fields post-treatment by magnetic fields
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/06—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain multicolour or other optical effects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/08—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface
    • B05D5/083—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain an anti-friction or anti-adhesive surface involving the use of fluoropolymers

Definitions

  • the flakes be able to reflect light back to the viewer, and this is the reason why large flakes (long dimension greater than the coating thickness) are used. Small flakes are insufficiently reflective to give a distinct difference in appearance between the area of reoriented flakes and planar disposed flakes, or in other words to give a distinct pattern in the coating.
  • the reoriented flakes may protrude from the surface of the coating, while the flakes which lie in the plane of the coating, i.e., not tilted, will generally not protrude from the surface of the release coating. Even though some of the reoriented flakes protrude from the surface of the release coating, the protruded portions of such flakes are coated with the composition of the release coating to form "mounds" of release coating encasing the protruding portions of the flakes. The profile of these mounds, tapering into the flat surface of the coating, enable the coating (after baking) to serve as a release coating.
  • the pattern is decorative.
  • the pattern can be present on the cooking (baking) surface and give the appearance of being three dimensional even though the release coating on the substrate is smooth.
  • the release coating is smooth, the smooth surface characterized by a surface roughness of less than 1.5 micrometers.
  • the pattern is in the form of liquid level indicia in the sidewall of the release-coated vessel. This sidewall marking information is provided by the magnetic reorientation of the flakes without any embossing of the cookware or bakeware sidewall and with the coating containing the magnetically reoriented flakes being sufficiently smooth surfaced to still serve as a release coating.
  • the magnetic force is applied to form the pattern as further shown in Figure 1.
  • the magnetizable die 12 is made of sheet metal, e.g., 0.1 mm to 4 mm thick, and is in the form of a morningstar pattern as best shown in Figure 2.
  • the sheet metal forming the die 12 is at an angle with respect to the plane of the underside of the fry pan 2. so that the upper edge and not the face (side) of the sheet metal forms the pattern of localized magnetic force in the coating 8.
  • the upper edge of the sheet metal can be as thin as a knife edge as well as thicker, e.g., up to the 4 mm thickness mentioned above.
  • the die 12 in essence looks like a cookie cutter, with its size depending on the size of the pattern to be formed in the release coating.
  • the interior space 14 of the die can be filled in by nonmagnetizable solid material such as wood (not shown).
  • the magnetizable die is not the source of the magnetic force.
  • the source of the magnetic force is magnet 16 which can be a permanent magnet or as shown in Figure 1 can be an electromagnet having a central pole 18 surrounded by electrical coil 20 and in turn by an annular pole 21.
  • the magnet 16 generates the magnetic force necessary for the invention.
  • the magnet 16 is spaced from the frying pan 2, and the magnetic force from the magnet is communicated to the release coating through the die 12.
  • the spacing of the magnet from the underside of the substrate can be great enough that the coating on the substrate is not directly exposed to the magnetic force of the magnet or the magnetic force of the magnet 16 is diffused into a magnetizable metal plate 22 interposed between the magnet 16 and die 12.
  • the micas described in these patents are coated with oxides or hydrous oxides of titanium, zirconium, aluminum, zinc, antimony, tin, iron, copper, nickel, cobalt, chromium, or vanadium. Titanium dioxide coated mica is preferred because of its availability. Mixtures of coated micas can also be used. The mica or coated mica is ordinarily present in the topcoat at a concentration of about 0.2-20% by dry weight of the composition.
  • the primer composition used in the present invention in aqueous dispersion form may also contain such other additives as adhesion promoters, such as colloidal silica or a phosphate compound, such as a metal phosphate, e.g., Zn, Mn, or Fe phosphate.
  • adhesion promoters such as colloidal silica or a phosphate compound, such as a metal phosphate, e.g., Zn, Mn, or Fe phosphate.
  • minute fissues in the midcoat provide easy pathways for moisture to permeate through all the layers to reach the substrate (frying pan) and cause blistering of the coatings.
  • the polyamic acid salt coverts to polyamideimide and bonds the flakes to the fluoropolymer.
  • the midcoat obtained in this Example is free of minute fissures.

Landscapes

  • Application Of Or Painting With Fluid Materials (AREA)
  • Paints Or Removers (AREA)
EP04012916A 1997-09-08 1998-09-03 Revêtement antiadhésif à motifs décoratifs Withdrawn EP1452242A3 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US5814897P 1997-09-08 1997-09-08
US58148P 1997-09-08
US144766 1998-09-01
US09/144,766 US6103361A (en) 1997-09-08 1998-09-01 Patterned release finish
EP19980948081 EP1017507B1 (fr) 1997-09-08 1998-09-03 Revetement antiadhesif a motifs decoratifs

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP98948081.9 Division 1998-09-03
EP19980948081 Division EP1017507B1 (fr) 1997-09-08 1998-09-03 Revetement antiadhesif a motifs decoratifs

Publications (2)

Publication Number Publication Date
EP1452242A2 true EP1452242A2 (fr) 2004-09-01
EP1452242A3 EP1452242A3 (fr) 2006-01-18

Family

ID=32776571

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04012916A Withdrawn EP1452242A3 (fr) 1997-09-08 1998-09-03 Revêtement antiadhésif à motifs décoratifs

Country Status (1)

Country Link
EP (1) EP1452242A3 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006066027A1 (fr) * 2004-12-16 2006-06-22 E. I. Du Pont De Nemours And Company Revetement anti-adhesif a base de fluoropolymere ayant des proprietes de transfert thermique et une resistance a l'abrasion ameliorees
US7462387B2 (en) 2004-12-16 2008-12-09 E.I. Du Pont De Nemours And Company Fluoropolymer release coating having improved heat transfer properties and abrasion resistance
EP2468924A1 (fr) * 2010-12-21 2012-06-27 Ryong Kim Méthode et appareil pour revêtir un article culinaire par l'application d'une force magnétique
CN102527615A (zh) * 2010-12-21 2012-07-04 金玲 使用磁力的器具涂敷方法及涂敷装置
US9630206B2 (en) 2005-05-12 2017-04-25 Innovatech, Llc Electrosurgical electrode and method of manufacturing same
CN112088050A (zh) * 2018-05-08 2020-12-15 锡克拜控股有限公司 用于生产包括取向的非球状的磁性或可磁化颜料颗粒的光学效应层的磁性组件、设备和方法
WO2025228771A1 (fr) * 2024-04-30 2025-11-06 Sicpa Holding Sa Procédés de production de couches à effet optique

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7147634B2 (en) 2005-05-12 2006-12-12 Orion Industries, Ltd. Electrosurgical electrode and method of manufacturing same

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1440147A (fr) * 1965-04-15 1966-05-27 Tefal Sa Procédé de décoration, dans la masse, d'un matériau plastique translucide
JPS5710376A (en) * 1980-06-23 1982-01-19 Nisshin Steel Co Ltd Production of painted metallic plate with pattern
JPS59124039A (ja) * 1982-12-29 1984-07-18 Fuji Photo Film Co Ltd 磁気記録媒体の製法
JPS63175670A (ja) * 1987-01-13 1988-07-20 Kansai Paint Co Ltd 模様塗膜の形成法
KR0135274B1 (ko) * 1989-06-27 1998-04-22 사사끼 가즈오 모양 도장막 형성 방법
JPH0517709A (ja) * 1991-07-09 1993-01-26 Nippon Paint Co Ltd 模様形成塗料組成物及び模様塗膜の形成方法
EP0556449B1 (fr) * 1992-02-21 1997-03-26 Hashimoto Forming Industry Co., Ltd. Peinture avec dessins faits magnétiquement et objets peints ayant des dessins formés magnétiquement
JPH08243483A (ja) * 1995-03-09 1996-09-24 Nisshin Steel Co Ltd 模様付き塗装金属板の製造方法
JP3614530B2 (ja) * 1995-09-05 2005-01-26 東京磁気印刷株式会社 磁気記録媒体およびその製造方法
JP3865269B2 (ja) * 1995-12-26 2007-01-10 洋一 村山 製品表面への模様形成法

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006066027A1 (fr) * 2004-12-16 2006-06-22 E. I. Du Pont De Nemours And Company Revetement anti-adhesif a base de fluoropolymere ayant des proprietes de transfert thermique et une resistance a l'abrasion ameliorees
US7462387B2 (en) 2004-12-16 2008-12-09 E.I. Du Pont De Nemours And Company Fluoropolymer release coating having improved heat transfer properties and abrasion resistance
RU2363548C2 (ru) * 2004-12-16 2009-08-10 Е.И.Дюпон Де Немур Энд Компани Фторполимерное антиадгезионное покрытие, обладающее улучшенными свойствами теплопередачи и сопротивления истиранию
CN101072645B (zh) * 2004-12-16 2011-12-07 纳幕尔杜邦公司 传热性和耐磨性改善的氟聚合物防粘涂层
US9630206B2 (en) 2005-05-12 2017-04-25 Innovatech, Llc Electrosurgical electrode and method of manufacturing same
US10463420B2 (en) 2005-05-12 2019-11-05 Innovatech Llc Electrosurgical electrode and method of manufacturing same
US11246645B2 (en) 2005-05-12 2022-02-15 Innovatech, Llc Electrosurgical electrode and method of manufacturing same
EP2468924A1 (fr) * 2010-12-21 2012-06-27 Ryong Kim Méthode et appareil pour revêtir un article culinaire par l'application d'une force magnétique
CN102527615A (zh) * 2010-12-21 2012-07-04 金玲 使用磁力的器具涂敷方法及涂敷装置
CN112088050A (zh) * 2018-05-08 2020-12-15 锡克拜控股有限公司 用于生产包括取向的非球状的磁性或可磁化颜料颗粒的光学效应层的磁性组件、设备和方法
WO2025228771A1 (fr) * 2024-04-30 2025-11-06 Sicpa Holding Sa Procédés de production de couches à effet optique

Also Published As

Publication number Publication date
EP1452242A3 (fr) 2006-01-18

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