UST920017I4 - Perforation op thermoplastic films - Google Patents

Perforation op thermoplastic films Download PDF

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Publication number
UST920017I4
UST920017I4 US920017DH UST920017I4 US T920017 I4 UST920017 I4 US T920017I4 US 920017D H US920017D H US 920017DH US T920017 I4 UST920017 I4 US T920017I4
Authority
US
United States
Prior art keywords
film
thermoplastic films
perforation
roller
sheets
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.)
Pending
Application number
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 filed Critical
Application granted granted Critical
Publication of UST920017I4 publication Critical patent/UST920017I4/en
Pending legal-status Critical Current

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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
    • B26F1/24—Perforating by needles or pins
    • 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
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1056—Perforating lamina
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/04—Processes
    • Y10T83/0405—With preparatory or simultaneous ancillary treatment of work
    • Y10T83/041—By heating or cooling
    • Y10T83/0414—At localized area [e.g., line of separation]
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/283—With means to control or modify temperature of apparatus or work
    • Y10T83/293—Of tool
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/323—With means to stretch work temporarily
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/929—Tool or tool with support
    • Y10T83/9314—Pointed perforators

Definitions

  • a method of perforating a film of a thermoplastic material comprising passing the film under tension around at least part of the surface of a roller, the surface having a plurality of projections thereon which are arranged in the pattern corresponding to that which is required for the perforations in the film and which are maintained at a temperature suflicient to melt the film, wherein the film is held against the roller solely by virtue of the tension in the film.
  • Apparatus for carrying out this method is also disclosed. The method and apparatus can be used for packaging purposes.

Abstract

A METHOD OF PERFORATING A FILM OF A THERMOPLASTIC MATERIAL COMPRISING PASSING THE FILM UNDER TENSION AROUND AT LEAST PART OF THE SURFACE OF A ROLLER, THE SURFACE HAVING A PLURALITY OF PROJECTIONS THEREON WHICH ARE ARRANGED IN THE PATTERN CORRESPONDING TO THAT WHICH IS REQUIRED FOR THE PERFORATIONS IN THE FILM AND WHICH ARE MAINTAINED AT A TEMPERATURE SUFFICIENT TO MELT THE FILM, WHEREIN THE FILM IS HELD AGAINST THE ROLLER SOLELY BY VIRTUE OF THE TENSION IN THE FILM. APPARATUS FOR CARRYING OUT THIS METHOD IS ALSO DISCLOSED. THE METHOD AND APPARATUS CAN BE USED FOR PACKAGING PURPOSES.

Description

DEFENSIVE PUBLICATION UNITED STATES PATENT OFFICE Published at the request of the applicant or owner in accordance with the Notice of Dec. 16, 1969, 869 0.6. 687. The abstracts of Defensive Publication applications are identified by distinctly numbered series and are arranged chronologically. The heading of each abstract indicates the number of pages of specification, including claims and sheets 01! drawings contained in the application as originally filed. The files of these applications are available to the public for inspection and reproduction may be purchased for 30 cents a sheet.
Defensive Publication applications have not been examined as to the merits of alleged invention. The Patent Oflice makes no assertion as to the novelty of the disclosed subject matter.
PUBLISHED MARCH 5, 1974:
T920,017 PERFORATION 0F THERMOPLASTIC FILMS Peter Ralph Billinghurst, East End Green, near Hertford,
England, assignor to Imperial Chemical Industries Limited, London, England Continuation of abandoned application Ser. No. 137,841, kpnlfll, 1971. This application Sept. 7, 1973, Ser. No.
95, 7 Claims priority, application Great Britain, May 8, 1970, 22,382/70; Feb. 17, 1971, 4,844/71 Int. Cl. B26f 3/10, N24 US. Cl. 83-16 2 Sheets Drawing. 14 Pages Specification A method of perforating a film of a thermoplastic material comprising passing the film under tension around at least part of the surface of a roller, the surface having a plurality of projections thereon which are arranged in the pattern corresponding to that which is required for the perforations in the film and which are maintained at a temperature suflicient to melt the film, wherein the film is held against the roller solely by virtue of the tension in the film. Apparatus for carrying out this method is also disclosed. The method and apparatus can be used for packaging purposes.
March 1974 P. R. BILLINGHURST T920,017
PERFQRATION OF THERMOPLASTIC FILMS Original Filed April 27, 1971 2 Sheets-Sheet l March 5, 1974 P R. BILLINGHURST T920917 PERFQRATION 0F THERMOPLASTIC FILMS Original Filed April 27, 1971 2 Sheets-Sheet 2 m u h v
US920017D 1970-05-08 1973-09-07 Perforation op thermoplastic films Pending UST920017I4 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB2238270 1970-05-08
GB484471 1971-02-17
US39517173A 1973-09-07 1973-09-07

Publications (1)

Publication Number Publication Date
UST920017I4 true UST920017I4 (en) 1974-03-05

Family

ID=27254507

Family Applications (1)

Application Number Title Priority Date Filing Date
US920017D Pending UST920017I4 (en) 1970-05-08 1973-09-07 Perforation op thermoplastic films

Country Status (1)

Country Link
US (1) UST920017I4 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110030528A1 (en) * 2009-08-10 2011-02-10 Amcor Limited Method and an apparatus for perforating polymeric film
US20130247729A1 (en) * 2008-02-14 2013-09-26 Boyer Machine, Inc. Film Perforation Method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130247729A1 (en) * 2008-02-14 2013-09-26 Boyer Machine, Inc. Film Perforation Method
US8650996B2 (en) * 2008-02-14 2014-02-18 Ronald S. Boyer, Jr. Film perforation method
US20110030528A1 (en) * 2009-08-10 2011-02-10 Amcor Limited Method and an apparatus for perforating polymeric film
US8833216B2 (en) * 2009-08-10 2014-09-16 Amcor Limited Method and an apparatus for perforating polymeric film

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