GB917246A - Improvements in or relating to forming holes in sheets of synthetic resin bonded paper laminate - Google Patents

Improvements in or relating to forming holes in sheets of synthetic resin bonded paper laminate

Info

Publication number
GB917246A
GB917246A GB2181061A GB2181061A GB917246A GB 917246 A GB917246 A GB 917246A GB 2181061 A GB2181061 A GB 2181061A GB 2181061 A GB2181061 A GB 2181061A GB 917246 A GB917246 A GB 917246A
Authority
GB
United Kingdom
Prior art keywords
sheet
hole
punch
shaving
synthetic resin
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
GB2181061A
Inventor
Ronald Percy Hocking
William Wallace
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.)
Belling and Lee Ltd
Original Assignee
Belling and Lee 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 Belling and Lee Ltd filed Critical Belling and Lee Ltd
Priority to GB2181061A priority Critical patent/GB917246A/en
Publication of GB917246A publication Critical patent/GB917246A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/02—Perforating by punching, e.g. with relatively-reciprocating punch and bed
    • B26F1/14—Punching tools; Punching dies

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

917,246. Punching apparatus. BELLING & LEE Ltd. Nov. 10, 1961 [June 16, 1961], No. 21810/61. Class 31 (2). A method of forming a hole in a sheet of synthetic resin bonded paper laminate comprises cutting a hole in the sheet by subjecting it to the action of a knife edge having the crosssectional shape of the desired hole but of slightly smaller peripheral dimension and a die of suitable size and shape and shaving the resultant hole until its dimensions are those desired, the cutting and shaving operations, being performed by a single tool operated by a pressure-applying device and in one and the same pressure stroke of said pressure-applying device. As shown, a sheet 1 has a hole formed therein by means of a punch 4 co-operating with a die 2, the punch having a dished face so as to provide a knife edge 6 and a shaving part 5. A groove 7 separates a part 8 from a part 9 of slightly greater diameter. A stripper 10 is provided. The punch instead of having a circular cross-section, as shown, may have a cross-section of keyhole shape. The sheet 1 may be heated. Two or more holes may be formed in the sheet.
GB2181061A 1961-06-16 1961-06-16 Improvements in or relating to forming holes in sheets of synthetic resin bonded paper laminate Expired GB917246A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2181061A GB917246A (en) 1961-06-16 1961-06-16 Improvements in or relating to forming holes in sheets of synthetic resin bonded paper laminate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2181061A GB917246A (en) 1961-06-16 1961-06-16 Improvements in or relating to forming holes in sheets of synthetic resin bonded paper laminate

Publications (1)

Publication Number Publication Date
GB917246A true GB917246A (en) 1963-01-30

Family

ID=10169200

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2181061A Expired GB917246A (en) 1961-06-16 1961-06-16 Improvements in or relating to forming holes in sheets of synthetic resin bonded paper laminate

Country Status (1)

Country Link
GB (1) GB917246A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2551079A1 (en) * 2011-07-29 2013-01-30 Nitto Denko Corporation Resin sheet, method of producing the same and through-hole forming apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2551079A1 (en) * 2011-07-29 2013-01-30 Nitto Denko Corporation Resin sheet, method of producing the same and through-hole forming apparatus

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