GB2079212B - Spark perforation of sheet material - Google Patents

Spark perforation of sheet material

Info

Publication number
GB2079212B
GB2079212B GB8120209A GB8120209A GB2079212B GB 2079212 B GB2079212 B GB 2079212B GB 8120209 A GB8120209 A GB 8120209A GB 8120209 A GB8120209 A GB 8120209A GB 2079212 B GB2079212 B GB 2079212B
Authority
GB
United Kingdom
Prior art keywords
sheet material
spark perforation
spark
perforation
sheet
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
GB8120209A
Other versions
GB2079212A (en
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.)
Wiggins Teape Group Ltd
Original Assignee
Wiggins Teape Group 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 Wiggins Teape Group Ltd filed Critical Wiggins Teape Group Ltd
Priority to GB8120209A priority Critical patent/GB2079212B/en
Publication of GB2079212A publication Critical patent/GB2079212A/en
Application granted granted Critical
Publication of GB2079212B publication Critical patent/GB2079212B/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
    • B26F1/26—Perforating by non-mechanical means, e.g. by fluid jet
    • B26F1/28—Perforating by non-mechanical means, e.g. by fluid jet by electrical discharges

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Elimination Of Static Electricity (AREA)
GB8120209A 1980-07-08 1981-06-30 Spark perforation of sheet material Expired GB2079212B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8120209A GB2079212B (en) 1980-07-08 1981-06-30 Spark perforation of sheet material

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8022239 1980-07-08
GB8120209A GB2079212B (en) 1980-07-08 1981-06-30 Spark perforation of sheet material

Publications (2)

Publication Number Publication Date
GB2079212A GB2079212A (en) 1982-01-20
GB2079212B true GB2079212B (en) 1983-11-02

Family

ID=26276144

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8120209A Expired GB2079212B (en) 1980-07-08 1981-06-30 Spark perforation of sheet material

Country Status (1)

Country Link
GB (1) GB2079212B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2121669B (en) * 1982-05-19 1986-07-16 Molins Plc Spark perforation of web material

Also Published As

Publication number Publication date
GB2079212A (en) 1982-01-20

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee