WO2003022691A3 - Method of laser machining to create an easy-open load carrying bag - Google Patents

Method of laser machining to create an easy-open load carrying bag Download PDF

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Publication number
WO2003022691A3
WO2003022691A3 PCT/US2002/028279 US0228279W WO03022691A3 WO 2003022691 A3 WO2003022691 A3 WO 2003022691A3 US 0228279 W US0228279 W US 0228279W WO 03022691 A3 WO03022691 A3 WO 03022691A3
Authority
WO
WIPO (PCT)
Prior art keywords
substrate material
easy
create
load carrying
laser machining
Prior art date
Application number
PCT/US2002/028279
Other languages
French (fr)
Other versions
WO2003022691A2 (en
Inventor
Chris Chow
Daniel B Miller
Kurt A Hatella
Original Assignee
Preco Laser Systems Llc
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 Preco Laser Systems Llc filed Critical Preco Laser Systems Llc
Priority to AU2002332866A priority Critical patent/AU2002332866A1/en
Publication of WO2003022691A2 publication Critical patent/WO2003022691A2/en
Publication of WO2003022691A3 publication Critical patent/WO2003022691A3/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/14—Cutting, e.g. perforating, punching, slitting or trimming
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5805—Opening or contents-removing devices added or incorporated during package manufacture for tearing a side strip parallel and next to the edge, e.g. by means of a line of weakness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
    • B23K26/062—Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam
    • B23K26/0626—Energy control of the laser beam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/08—Devices involving relative movement between laser beam and workpiece
    • B23K26/083—Devices involving movement of the workpiece in at least one axial direction
    • B23K26/0838—Devices involving movement of the workpiece in at least one axial direction by using an endless conveyor belt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/18—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/30—Organic material
    • B23K2103/42—Plastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/50—Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26
    • 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
    • B29C2791/00—Shaping characteristics in general
    • B29C2791/004—Shaping under special conditions
    • B29C2791/009—Using laser
    • 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
    • B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
    • B29C59/007—Forming single grooves or ribs, e.g. tear lines, weak spots
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2155/00—Flexible containers made from webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2160/00—Shape of flexible containers
    • B31B2160/20—Shape of flexible containers with structural provision for thickness of contents

Abstract

A system and method for producing a partially perforated tear line (12) on a substrate material (14) uses an high energy beam such as a laser beam (18) to ablate the substrate material (14) at a depth less than full depth of the substrate (14). By varying the output energy level of the high energy beam for varying time intervals, a substrate material (14) is weakened to provide an easy open feature without significantly reducing the tensile strength of the substrate material (14). The ratio of partial perforated to unablated substrate material may vary according to almost any ratio.
PCT/US2002/028279 2001-09-07 2002-09-06 Method of laser machining to create an easy-open load carrying bag WO2003022691A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002332866A AU2002332866A1 (en) 2001-09-07 2002-09-06 Method of laser machining to create an easy-open load carrying bag

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US31789301P 2001-09-07 2001-09-07
US60/317,893 2001-09-07

Publications (2)

Publication Number Publication Date
WO2003022691A2 WO2003022691A2 (en) 2003-03-20
WO2003022691A3 true WO2003022691A3 (en) 2003-10-30

Family

ID=23235713

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/028279 WO2003022691A2 (en) 2001-09-07 2002-09-06 Method of laser machining to create an easy-open load carrying bag

Country Status (2)

Country Link
AU (1) AU2002332866A1 (en)
WO (1) WO2003022691A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004036058A1 (en) * 2004-07-24 2006-02-16 Hysalma Hygiene Sales + Marketing Gmbh Packaging of a hygiene article, in particular a menstruation tampon
RU2496697C2 (en) 2008-01-04 2013-10-27 Крафт Фудз Груп Брендс ЭлЭлСи Method and apparatus for packaging with laser engraving
US8814430B2 (en) 2010-02-23 2014-08-26 Kraft Foods R&D, Inc. Food package having opening feature
US9327044B2 (en) * 2013-01-25 2016-05-03 The Procter & Gamble Company Method for delivering a volatile fluid to the atmosphere
US9327043B2 (en) * 2013-01-25 2016-05-03 The Procter & Gamble Company Device for delivering a volatile fluid to the atmosphere

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5001325A (en) * 1988-09-07 1991-03-19 Lpf Verpakkingen B.V. Method of providing score lines in packaging material
EP0730944A1 (en) * 1995-03-10 1996-09-11 W.R. Grace & Co.-Conn. Method of forming a line of weakness in a heat-shrinkable laminate
US20020068668A1 (en) * 2000-12-01 2002-06-06 Laser Machining, Inc. Method for laser machining easy open, tear flexible packaging

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5001325A (en) * 1988-09-07 1991-03-19 Lpf Verpakkingen B.V. Method of providing score lines in packaging material
EP0730944A1 (en) * 1995-03-10 1996-09-11 W.R. Grace & Co.-Conn. Method of forming a line of weakness in a heat-shrinkable laminate
US20020068668A1 (en) * 2000-12-01 2002-06-06 Laser Machining, Inc. Method for laser machining easy open, tear flexible packaging

Also Published As

Publication number Publication date
WO2003022691A2 (en) 2003-03-20
AU2002332866A1 (en) 2003-03-24

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