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GB964956A - Improvements in razor blades - Google Patents

Improvements in razor blades

Info

Publication number
GB964956A
GB964956A GB24837/63A GB2483763A GB964956A GB 964956 A GB964956 A GB 964956A GB 24837/63 A GB24837/63 A GB 24837/63A GB 2483763 A GB2483763 A GB 2483763A GB 964956 A GB964956 A GB 964956A
Authority
GB
United Kingdom
Prior art keywords
fluorocarbon
heated
reducing atmosphere
razor blades
blades
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
GB24837/63A
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.)
Eversharp Inc
Original Assignee
Eversharp Inc
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 Eversharp Inc filed Critical Eversharp Inc
Publication of GB964956A publication Critical patent/GB964956A/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
    • B26B21/58—Razor-blades characterised by the material
    • B26B21/60—Razor-blades characterised by the material by the coating material
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D123/00—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers
    • C09D123/26—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers modified by chemical after-treatment
    • C09D123/28—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers modified by chemical after-treatment by reaction with halogens or compounds containing halogen
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
    • C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
    • C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S128/00—Surgery
    • Y10S128/14—Polytetrafluoroethylene, i.e. PTFE

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Knives (AREA)

Abstract

In the process for treating razor blades whereby a coating of a fluorocarbon is applied to at least a portion of the blade surface and the coated blade is then heated to cause the fluorocarbon to form an adhering film, the heating operation is carried out in a reducing atmosphere. The coating material may be polytetrafluoroethylene, polytrifluorochloroethylene or fluorinated polyethylenepropylene; it may be applied in an aqueous or non-aqueous dispersion by dipping or spraying to plain steel or stainless steel blades which may be initially cleaned and pre-heated. The reducing atmosphere may be a mixture of nitrogen and hydrogen obtained by the dissociation of ammonia. French Specifications 1,293,388 and 1,299,519 are referred to.
GB24837/63A 1962-09-25 1963-06-21 Improvements in razor blades Expired GB964956A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US226169A US3203829A (en) 1962-09-25 1962-09-25 Razor blades

Publications (1)

Publication Number Publication Date
GB964956A true GB964956A (en) 1964-07-29

Family

ID=22847848

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24837/63A Expired GB964956A (en) 1962-09-25 1963-06-21 Improvements in razor blades

Country Status (3)

Country Link
US (1) US3203829A (en)
DK (1) DK107012C (en)
GB (1) GB964956A (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3345202A (en) * 1963-06-10 1967-10-03 Eversharp Inc Method of making razor blades
US3518110A (en) * 1964-07-23 1970-06-30 Gillette Co Razor blade and method of making same
GB1127633A (en) * 1964-10-23 1968-09-18 Laura Noss Improvements in and relating to coated razor blades
US3444004A (en) * 1965-09-30 1969-05-13 Leesona Corp Electrochemical cell having at least one non-consumable electrode comprising a porous metal support having internal voids sealed with a hydrophobic polymer
DD63018A (en) * 1966-03-16
US3512256A (en) * 1966-11-09 1970-05-19 Southeastern Coatings Inc Dry lubricant coated safety razor
NL133264C (en) * 1968-02-01
DE1769595C3 (en) * 1968-06-12 1975-07-17 Robert Bosch Gmbh, 7000 Stuttgart Process for the production of gas-permeable, hydrophobic films from fluorine-containing polymers for electrochemical cells, in particular fuel cells
GB1237893A (en) * 1968-06-21 1971-06-30
US3900636A (en) * 1971-01-21 1975-08-19 Gillette Co Method of treating cutting edges
US4276789A (en) * 1978-07-17 1981-07-07 Hallen Company Cork extractor
US4291597A (en) * 1978-07-17 1981-09-29 Hallen Company Cork extractor
US4738248A (en) * 1986-07-17 1988-04-19 Cedar Development Corp. Surgical retractors
US6228428B1 (en) 1991-10-28 2001-05-08 The Gillette Company Coating cutting edges with fluorocarbon polymers
GB9122800D0 (en) * 1991-10-28 1991-12-11 Gillette Co Coating cutting edges with fluorocarbon polymers
US5263256A (en) * 1992-04-17 1993-11-23 The Gillette Company Method of treating razor blade cutting edges
GB9311034D0 (en) * 1993-05-28 1993-07-14 Gillette Co Method of coating cutting edges
GB9805102D0 (en) 1998-03-10 1998-05-06 Ciba Geigy Ag Device
US11338321B2 (en) 2019-05-09 2022-05-24 The Gillette Company Llc Method for modifying coated razor blade edges

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE605577A (en) *
US1942025A (en) * 1931-01-03 1934-01-02 Thomas H Frost Blade strip and method of making the same
US2880109A (en) * 1955-09-22 1959-03-31 United States Steel Corp Method of coating the interior of cylinders

Also Published As

Publication number Publication date
DK107012C (en) 1967-04-10
DE1546906A1 (en) 1972-02-17
US3203829A (en) 1965-08-31

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