EP1356899A1 - Metallscheren und deren Herstellungsprozess - Google Patents

Metallscheren und deren Herstellungsprozess Download PDF

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Publication number
EP1356899A1
EP1356899A1 EP03004886A EP03004886A EP1356899A1 EP 1356899 A1 EP1356899 A1 EP 1356899A1 EP 03004886 A EP03004886 A EP 03004886A EP 03004886 A EP03004886 A EP 03004886A EP 1356899 A1 EP1356899 A1 EP 1356899A1
Authority
EP
European Patent Office
Prior art keywords
coating layer
base material
polymer compound
layer
scissors
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.)
Granted
Application number
EP03004886A
Other languages
English (en)
French (fr)
Other versions
EP1356899B1 (de
Inventor
Yuji Sotokawa
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.)
Tokosha Co Ltd
Original Assignee
Tokosha Co 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 Tokosha Co Ltd filed Critical Tokosha Co Ltd
Publication of EP1356899A1 publication Critical patent/EP1356899A1/de
Application granted granted Critical
Publication of EP1356899B1 publication Critical patent/EP1356899B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B13/00—Hand shears; Scissors
    • B26B13/12—Hand shears; Scissors characterised by the shape of the handles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B13/00—Hand shears; Scissors

Definitions

  • the present invention relates to metal scissors used in a barber shop, a beauty salon and a shop for caring pets such as a dog and a cat and to a production process of the metal scissors.
  • the grips of metal scissors used in a barber shop and a beauty salon are subjected to a variety of surface treatments such as glossing, a hair line finish and plating.
  • surface treatments such as glossing, a hair line finish and plating.
  • metal scissors with plastic insert molded grips or ion plated grips are commercially available.
  • a first object of the present invention is to provide metal scissors having grips which give a good touch, are not liable to be slippery even when used by a wet hand and are free from the possibility that the surface of a base material is not exposed even when the surface of the grip is abraded or scratched.
  • a second object of the present invention is to provide metal scissors having grips which give an extraordinar fit.
  • a third object of the present invention is to provide metal scissors having grips which give a good touch, are not liable to be slippery even when used by a wet hand, are free from the possibility that the surface of a base material is not exposed even when the surface of the grip is abraded or scratched, and are coated with a protective coating film which does not come off easily.
  • a fourth object of the present invention is to provide metal scissors having grips which give anaki fit.
  • a fifth object of the present invention is to provide a process capable of mass-producing the above scissors efficiently at low costs.
  • metal scissors of the present invention have grips each having a titanium coating layer formed on the surface of a base material and a polymer compound coating layer formed on the titanium coating layer, the polymer compound coating layer having excellent abrasion resistance and scratch resistance.
  • the base material in the grip has moderate surface roughness with fine pits and projections on the surface
  • the titanium coating layer, the polymer compound foundation layer and the polymer compound coating layer are laminated to such a thickness that does not impair the surface roughness of the base material so as to form fine pits and projections comparable to the surface roughness of the base material, on the surface of the polymer compound coating layer.
  • a process for producing metal scissors according to the present invention comprises:
  • the pair of scissors parts in the present invention are made of stainless steel or other known metals.
  • the surface roughness of the base material in the grip is arbitrary. However, in consideration of sense of touch, slipperiness, a fit to a hand, and the like, its lower limit Ry is 12.5, and its upper limit Ry is 50. When the surface roughness is lower than the lower limit, pits and projections are so small that the grip is liable to be slippery, while when it is higher than the upper limit, the pits and projections are so large that the grip irritates skin excessively upon contact and causes pain in a hand.
  • This surface roughness is set at an optimum value according to application purposes as in a barber shop and a beauty salon, individual differences, and other factors.
  • the thickness of the titanium coating layer is about 0.8 to 1.2 ⁇ m.
  • the color of the titanium coating layer may be any appropriate color in addition to blue, gray, black, gold and a rainbow color.
  • the polymer compound foundation layer comprises clear paint such as a polyurethane for a base coat and may be any polymer compound member having excellent adhesion to the titanium coating layer.
  • the thickness of the foundation layer is about 3 to 7 ⁇ m, desirably about 5 ⁇ m.
  • Figs. 1 and 2 exemplify one embodiment of metal scissors of claim 1 of the present invention.
  • Scissors 1 for use in a barber shop and a beauty salon comprise a pair of stainless steel scissors parts 2 and a shaft 3 which joins the stainless steel scissors parts 2 together.
  • the pair of scissors parts 2 are wholly coated with a titanium coating layer 6.
  • Grips 4 each comprise the titanium coating layer 6 which is formed on the smooth surface of a base material 5 and a polyurethane coating layer 7 which is formed on the layer 6 and has excellent abrasion resistance and scratch resistance.
  • Fig. 3 exemplifies one embodiment of metal scissors of claim 2 of the present invention. Since its constitution is basically the same as that of the above embodiment of Fig. 1, descriptions on constituents common between them will be omitted, using the same reference numerals, and only constituents different between them will be described.
  • Grips 4 each comprise a titanium coating layer 6 which is formed on the surface of a base material 5, a polyurethane foundation layer 8 for a base coat which is formed on the layer 6 and has excellent adhesion to the layer 6, and a polyurethane coating layer 7 which is formed on the layer 8 and has excellent abrasion resistance and scratch resistance.
  • Fig. 4 exemplifies one embodiment of metal scissors of claim 3 of the present invention. Since its constitution is basically the same as that of the above embodiment of Fig. 1, descriptions on constituents common between them will be omitted, using the same reference numerals, and only constituents different between them will be described.
  • Grips 4 each comprise a base material 5 with a surface 5a which has fine pits and projections thereon with a surface roughness Ry of 12.5 to 50, a titanium coating layer 6 which is formed on the surface of the base material 5, and a polyurethane coating layer 7 which is formed on the layer 6 and has excellent abrasion resistance and scratch resistance.
  • the total thickness of the titanium coating layer 6 and the polyurethane coating layer 7 when they are laminated together is such a thickness that does not impair the surface roughness of the finely uneven surface 5a of the base material 5 so as to form a finely uneven surface 7a of the polyurethane coating layer 7 which is comparable to the surface roughness of the base material surface 5a.
  • Fig. 5 exemplifies one embodiment of the metal scissors of claim 3 of the present invention. Since its constitution is basically the same as that of the above embodiment of Fig. 1, descriptions on constituents common between them will be omitted, using the same reference numerals, and only constituents different between them will be described.
  • Grips 4 each comprise a base material 5 with a surface 5a which has fine pits and projections thereon with a surface roughness Ry of 12.5 to 50, a titanium coating layer 6 which is formed on the surface of the base material 5, a polyurethane foundation layer 8 for a base coat which is formed on the layer 6 and has excellent adhesion to the layer 6, and a polyurethane coating layer 7 which is formed on the layer 8 and has excellent abrasion resistance and scratch resistance.
  • the total thickness of the titanium coating layer 6, the polyurethane foundation layer 8 for a base coat and the polyurethane coating layer 7 when they are laminated together is such a thickness that does not impair the surface roughness of the finely uneven surface 5a of the base material 5 so as to form a finely uneven surface 7a of the polyurethane coating layer 7 which is comparable to the surface roughness of the base material surface 5a.
  • Figs. 6A to 6D show a production example of the above scissors of Fig. 5 as one embodiment of the production process of metal scissors of the present invention.
  • Scissors 1 are prepared in accordance with the following steps.
  • the surfaces of base materials 5 in grips 4 of a pair of scissors parts 2 are blast-treated so as to form a finely uneven base material surface 5a with a surface roughness Ry of 12.5 to 50.
  • the scissors part 2 is wholly coated with titanium so as to form a titanium coating layer 6 whose thickness together with the thicknesses of all other layers 7 and 8 to which the layer 6 is laminated does not impair the surface roughness of the base material surface 5a.
  • the polyurethane foundation layer 8 for a base coat which has excellent adhesion to the layer 6 is formed by baking coating such that the layer 8 has such a thickness that together with the thicknesses of all other layers 6 and 7 to which the layer 8 is laminated does not impair the surface roughness of the base material surface 5a.
  • the polyurethane coating layer 7 which has excellent abrasion resistance and scratch resistance is baking-coated to such a thickness that together with the thicknesses of all other layers 6 and 8 to which the layer 7 is laminated does not impair the surface roughness of the base material surface 5a, thereby forming a finely uneven surface 7a of the polyurethane coating layer 7 which is comparable to the surface roughness of the base material surface 5a.
  • the pair of scissors parts 2 are joined together by means of a shaft 3, thereby producing the scissors 1 with the grips 4 that each comprise the finely uneven base material 5 which has a surface roughness Ry of 12.5 to 50, the titanium coating layer 6 which is formed on the finely uneven base material surface 5a, the polyurethane foundation layer 8 for a base coat which is formed on the layer 6 and has excellent adhesion to the layer 6, and the polyurethane coating layer 7 which is formed on the layer 8 and has excellent abrasion resistance and scratch resistance.
  • the titanium coating layer 6, the foundation layer 8 and the polyurethane coating layer 7 are formed in such a total thickness that does not impair the surface roughness of the finely uneven base material surface 5a of the base material 5 so as to form the finely uneven surface 7a of the polyurethane coating layer 7 which is comparable to the surface roughness of the base material surface 5a.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Scissors And Nippers (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Laminated Bodies (AREA)
EP20030004886 2002-04-26 2003-03-06 Metallscheren und deren Herstellungsprozess Expired - Lifetime EP1356899B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2002126478A JP4342769B2 (ja) 2002-04-26 2002-04-26 金属製鋏
JP2002126478 2002-04-26

Publications (2)

Publication Number Publication Date
EP1356899A1 true EP1356899A1 (de) 2003-10-29
EP1356899B1 EP1356899B1 (de) 2005-11-09

Family

ID=28786827

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20030004886 Expired - Lifetime EP1356899B1 (de) 2002-04-26 2003-03-06 Metallscheren und deren Herstellungsprozess

Country Status (3)

Country Link
EP (1) EP1356899B1 (de)
JP (1) JP4342769B2 (de)
DE (2) DE03004886T1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4926687B2 (ja) * 2006-12-14 2012-05-09 英行 野尻 化粧用鋏及びその製造方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5152774A (en) * 1988-10-17 1992-10-06 Schroeder William A Surgical instrument having a toughened wearing surface and method of making the same
WO1999007527A1 (en) * 1997-08-12 1999-02-18 Molecular Metallurgy, Inc. Coated manicure implement

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5152774A (en) * 1988-10-17 1992-10-06 Schroeder William A Surgical instrument having a toughened wearing surface and method of making the same
WO1999007527A1 (en) * 1997-08-12 1999-02-18 Molecular Metallurgy, Inc. Coated manicure implement

Also Published As

Publication number Publication date
DE03004886T1 (de) 2004-08-26
JP2003311040A (ja) 2003-11-05
DE60302173T2 (de) 2006-07-27
EP1356899B1 (de) 2005-11-09
JP4342769B2 (ja) 2009-10-14
DE60302173D1 (de) 2005-12-15

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