ES341613A1 - Improvements in or relating to razor blades - Google Patents

Improvements in or relating to razor blades

Info

Publication number
ES341613A1
ES341613A1 ES341613A ES341613A ES341613A1 ES 341613 A1 ES341613 A1 ES 341613A1 ES 341613 A ES341613 A ES 341613A ES 341613 A ES341613 A ES 341613A ES 341613 A1 ES341613 A1 ES 341613A1
Authority
ES
Spain
Prior art keywords
polymer
molecular oxygen
mixture
tetrafluoroethylene
coating
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.)
Expired
Application number
ES341613A
Other languages
Spanish (es)
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.)
Gillette Industries Ltd
Original Assignee
Gillette Industries Ltd
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 Gillette Industries Ltd filed Critical Gillette Industries Ltd
Publication of ES341613A1 publication Critical patent/ES341613A1/en
Expired legal-status Critical Current

Links

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
    • B05D3/04—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 exposure to gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B21/00—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
    • B26B21/54—Razor-blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B21/00—Razors of the open or knife type; Safety razors or other shaving implements of the planing type; Hair-trimming devices involving a razor-blade; Equipment therefor
    • B26B21/54—Razor-blades
    • B26B21/58—Razor-blades characterised by the material
    • B26B21/60—Razor-blades characterised by the material by the coating material
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/02—Pretreatment of the material to be coated

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

A process for the production 'of a razor blade comprises applying a coating of a fluorocarbon polymer to a cutting edge thereof and sintering the coating to adhere it to the edge, in which prior to, during, or after the sintering step the blade is heated at a temperature of at least 300 F in a reducing atmosphere containing from 2 x 1014 to 2 x 1015 molecules of oxygen per cubic centimeter. The polymer may be a homo-polymer of tetrafluoroethylene or a co-polymer of tetrafluoroethylene with small amounts e.g. up to 5% by weight, of hexafluoropropylene, especially those having a molecular weight of 5000 or more. The desired concentration of molecular oxygen can be provided by controlled addition of a small amount of molecular oxygen to a reducing gas or a mixture of such gases, such as hydrogen or cracked ammonia and using the mixture obtained at normal atmospheric pressure. Alternatively a gas such as water or carbon dioxide which decomposes at elevated temperature to form an equili- 'brium mixture containing molecular oxygen may be employed. A further method is by the use of the air at a reduced pressure.
ES341613A 1966-06-09 1967-06-09 Improvements in or relating to razor blades Expired ES341613A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2574366A GB1149781A (en) 1966-06-09 1966-06-09 Improvements in or relating to razor blades

Publications (1)

Publication Number Publication Date
ES341613A1 true ES341613A1 (en) 1968-10-16

Family

ID=10232559

Family Applications (1)

Application Number Title Priority Date Filing Date
ES341613A Expired ES341613A1 (en) 1966-06-09 1967-06-09 Improvements in or relating to razor blades

Country Status (6)

Country Link
BE (1) BE699753A (en)
DE (1) DE1553699A1 (en)
ES (1) ES341613A1 (en)
GB (1) GB1149781A (en)
NL (1) NL6708019A (en)
SE (2) SE346019B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7673541B2 (en) * 2004-06-03 2010-03-09 The Gillette Company Colored razor blades
US7284461B2 (en) 2004-12-16 2007-10-23 The Gillette Company Colored razor blades
US8505414B2 (en) 2008-06-23 2013-08-13 Stanley Black & Decker, Inc. Method of manufacturing a blade
US8769833B2 (en) 2010-09-10 2014-07-08 Stanley Black & Decker, Inc. Utility knife blade

Also Published As

Publication number Publication date
NL6708019A (en) 1967-12-11
SE346019B (en) 1972-06-19
SE320002B (en) 1970-01-26
BE699753A (en) 1967-12-11
GB1149781A (en) 1969-04-23
DE1553699A1 (en) 1971-06-09

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