GB2021479B - Method and apparatus for producing perforated films - Google Patents

Method and apparatus for producing perforated films

Info

Publication number
GB2021479B
GB2021479B GB7917936A GB7917936A GB2021479B GB 2021479 B GB2021479 B GB 2021479B GB 7917936 A GB7917936 A GB 7917936A GB 7917936 A GB7917936 A GB 7917936A GB 2021479 B GB2021479 B GB 2021479B
Authority
GB
United Kingdom
Prior art keywords
perforated films
producing perforated
producing
films
perforated
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
GB7917936A
Other versions
GB2021479A (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.)
Ethyl Corp
Original Assignee
Ethyl Corp
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 Ethyl Corp filed Critical Ethyl Corp
Publication of GB2021479A publication Critical patent/GB2021479A/en
Application granted granted Critical
Publication of GB2021479B publication Critical patent/GB2021479B/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/15577—Apparatus or processes for manufacturing
    • A61F13/15707—Mechanical treatment, e.g. notching, twisting, compressing, shaping
    • A61F13/15731—Treating webs, e.g. for giving them a fibrelike appearance, e.g. by embossing
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/18—Thermoforming apparatus
    • B29C51/20—Thermoforming apparatus having movable moulds or mould parts
    • B29C51/22—Thermoforming apparatus having movable moulds or mould parts rotatable about an axis
    • B29C51/225—Thermoforming apparatus having movable moulds or mould parts rotatable about an axis mounted on a vacuum drum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/10—Forming by pressure difference, e.g. vacuum

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Epidemiology (AREA)
  • Public Health (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Manufacturing & Machinery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Veterinary Medicine (AREA)
  • Forests & Forestry (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
GB7917936A 1978-05-24 1979-05-23 Method and apparatus for producing perforated films Expired GB2021479B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US90911278A 1978-05-24 1978-05-24

Publications (2)

Publication Number Publication Date
GB2021479A GB2021479A (en) 1979-12-05
GB2021479B true GB2021479B (en) 1982-04-15

Family

ID=25426652

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7917936A Expired GB2021479B (en) 1978-05-24 1979-05-23 Method and apparatus for producing perforated films

Country Status (6)

Country Link
JP (1) JPS5519594A (en)
BE (1) BE876499A (en)
CA (1) CA1125973A (en)
DE (1) DE2921078A1 (en)
FR (1) FR2426556A1 (en)
GB (1) GB2021479B (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4441952A (en) * 1981-02-02 1984-04-10 The Procter & Gamble Company Method and apparatus for uniformly debossing and aperturing a resilient plastic web
ATE39821T1 (en) * 1983-10-17 1989-01-15 Procter & Gamble METHOD AND APPARATUS FOR UNIFORM DEPRESSING AND OPTIONAL PERFORATING OF A MOVING PLASTIC WEB.
US4741877A (en) * 1983-10-17 1988-05-03 The Procter & Gamble Company Uniformly debossing and aperturing a moving plastic web using stationary support member in forming area
US4839216A (en) * 1984-02-16 1989-06-13 The Procter & Gamble Company Formed material produced by solid-state formation with a high-pressure liquid stream
SE449298B (en) * 1984-05-15 1987-04-27 Moelnlycke Ab ABSORBING PRODUCT, SUCH AS DAMBINDE, BLOW OR WOUND
US4681793A (en) * 1985-05-31 1987-07-21 The Procter & Gamble Company Non-occluding, liquid-impervious, composite backsheet for absorptive devices
US4591523A (en) * 1985-05-31 1986-05-27 The Procter & Gamble Company Apertured macroscopically expanded three-dimensional polymeric web exhibiting breatheability and resistance to fluid transmission
US4846821A (en) * 1987-08-24 1989-07-11 The Procter & Gamble Company Substantially fluid-impervious microbubbled polymeric web exhibiting low levels of noise when subjected to movement
US4772444A (en) * 1987-08-24 1988-09-20 The Procter & Gamble Company Method and apparatus for making microbubbled and/or microapertured polymeric webs using hydraulic pressure
US4778644A (en) * 1987-08-24 1988-10-18 The Procter & Gamble Company Method and apparatus for making substantially fluid-impervious microbubbled polymeric web using high pressure liquid stream
JP2928665B2 (en) * 1991-08-21 1999-08-03 ユニ・チャーム株式会社 Surface sheet for absorbent article and method for producing the same
TW252915B (en) * 1991-12-25 1995-08-01 Kao Corp
JPH07506076A (en) 1992-04-27 1995-07-06 エス．シー．ジョンソン　ホーム　ストーレイジ，インコーポレーテッド Microporous film and packaging bags made therefrom

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1591921A (en) * 1925-03-25 1926-07-06 St Annes Board Mill Co Ltd Suction cylinder or roll of machines for making paper, paper board, mill board, and the like
BE538987A (en) * 1954-06-16 1900-01-01
US3814101A (en) * 1970-09-17 1974-06-04 Union Carbide Corp Disposable absorbent articles
US3038198A (en) * 1956-01-03 1962-06-12 Kendall & Co Apparatus for perforating thermoplastic sheets
US3929135A (en) * 1974-12-20 1975-12-30 Procter & Gamble Absorptive structure having tapered capillaries
JPS51109068A (en) * 1975-03-20 1976-09-27 Maruto Kasei Kogyo Kk KAJITSUTONOYUSOYOPATSUKUO GOSEIJUSHISHIITOOMOTSUTESEIKEISURUHOHO

Also Published As

Publication number Publication date
BE876499A (en) 1979-11-23
CA1125973A (en) 1982-06-22
FR2426556A1 (en) 1979-12-21
JPS5736130B2 (en) 1982-08-02
JPS5519594A (en) 1980-02-12
GB2021479A (en) 1979-12-05
FR2426556B1 (en) 1984-12-14
DE2921078A1 (en) 1979-12-06

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19960523