CA2333754A1 - Tamper resistant closure - Google Patents

Tamper resistant closure Download PDF

Info

Publication number
CA2333754A1
CA2333754A1 CA002333754A CA2333754A CA2333754A1 CA 2333754 A1 CA2333754 A1 CA 2333754A1 CA 002333754 A CA002333754 A CA 002333754A CA 2333754 A CA2333754 A CA 2333754A CA 2333754 A1 CA2333754 A1 CA 2333754A1
Authority
CA
Canada
Prior art keywords
bag
neck
outboard
inboard
tamper resistant
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.)
Granted
Application number
CA002333754A
Other languages
French (fr)
Other versions
CA2333754C (en
Inventor
Luther B. Stoddard
Jerry Dale Pack
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.)
Burford Corp
Original Assignee
Burford Corp.
Luther B. Stoddard
Jerry Dale Pack
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 Burford Corp., Luther B. Stoddard, Jerry Dale Pack filed Critical Burford Corp.
Publication of CA2333754A1 publication Critical patent/CA2333754A1/en
Application granted granted Critical
Publication of CA2333754C publication Critical patent/CA2333754C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags

Abstract

A method and apparatus for forming a tamper resistant sea] on a plastic bag containing a loaf of bread or other products is disclosed.
The neck (125) of the bag (125b) is flattened, gripped between a pair of upper inboard and outboard gathering belts and a pair of lower inboard and outboard gathering belts adjacent opposite sides of a segment of the neck of the bag. A row of perforations(132) is formed in the bag neck as the bag moves adjacent a roller provided with teeth or cutting elements. Heated air jets are directed to engage the segment of the bag bridging between the inboard and the outboard gathering belts for fusing panels of the bag together to form a sealed strip spaced from the row of perforations in the bag neck to facilitate removal of the sealed strip from the bag.
CA002333754A 1998-06-01 1999-06-01 Tamper resistant closure Expired - Lifetime CA2333754C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US8751798P 1998-06-01 1998-06-01
US60/087,517 1998-06-01
PCT/US1999/012110 WO1999062768A1 (en) 1998-06-01 1999-06-01 Tamper resistant closure

Publications (2)

Publication Number Publication Date
CA2333754A1 true CA2333754A1 (en) 1999-12-09
CA2333754C CA2333754C (en) 2007-11-20

Family

ID=22205660

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002333754A Expired - Lifetime CA2333754C (en) 1998-06-01 1999-06-01 Tamper resistant closure

Country Status (11)

Country Link
EP (1) EP1091875B1 (en)
JP (1) JP4568428B2 (en)
AU (1) AU763499B2 (en)
BR (1) BR9910788A (en)
CA (1) CA2333754C (en)
DE (1) DE69926893T2 (en)
DK (1) DK1091875T3 (en)
ES (1) ES2249036T3 (en)
HK (1) HK1036439A1 (en)
MX (1) MXPA00011890A (en)
WO (1) WO1999062768A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3877268A4 (en) * 2018-11-08 2022-08-17 Kwik Lok Corporation Tamper evident packaging and methods of manufacturing the same utilizing a non-contact sealing device

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3059670A (en) 1958-02-04 1962-10-23 Charles E Burford Wire twisting tool
US3138904A (en) 1963-03-26 1964-06-30 Burford Company Method and apparatus for tying packages and wrapping materials
GB1200302A (en) * 1966-10-25 1970-07-29 Comitex Ltd Improvements to heat sealing machines
JPS4819752B1 (en) * 1967-04-27 1973-06-15
US3919829A (en) 1971-05-26 1975-11-18 Leonard W Burford Apparatus for tying packages and wrapping materials
US3990216A (en) * 1975-05-05 1976-11-09 Martin William F Bag closing and feeding apparatus
JPS58107307U (en) * 1982-01-10 1983-07-21 ナショナル住宅産業株式会社 packaging equipment
JPS58163407U (en) * 1982-04-27 1983-10-31 野崎蒲鉾株式会社 Perforation packaging equipment
US4682976A (en) * 1984-04-16 1987-07-28 Andrew McG. Martin Apparatus for making easy open and reclosable bags
US4856258A (en) 1986-11-21 1989-08-15 Burford Corp. Wire tying device
CA2064270A1 (en) * 1992-03-27 1993-09-28 Bob Davis Tamper sealed bag with reusable closure
JPH0616212U (en) * 1992-08-05 1994-03-01 トキワ工業株式会社 Film packaging equipment
US5483134A (en) * 1993-09-30 1996-01-09 Burford Corporation Ribbon sensing device for bag tyer
FR2725396B1 (en) * 1994-10-07 1996-12-20 Formfil THERMAL WELDING MACHINE
GB2305418B (en) 1995-09-19 1998-12-02 Allied Bakeries Ltd Reclosable packaging
US5600938A (en) 1995-09-22 1997-02-11 Kwik Lok Corporation Sealing and bagging apparatus and method
AU8248598A (en) * 1997-07-17 1999-02-10 H A Holmes & Co Limited Apparatus for heat sealing bags

Also Published As

Publication number Publication date
HK1036439A1 (en) 2002-01-04
BR9910788A (en) 2002-02-05
EP1091875A1 (en) 2001-04-18
JP4568428B2 (en) 2010-10-27
EP1091875A4 (en) 2003-08-06
MXPA00011890A (en) 2005-07-15
WO1999062768A1 (en) 1999-12-09
AU763499B2 (en) 2003-07-24
DK1091875T3 (en) 2005-12-19
CA2333754C (en) 2007-11-20
JP2002516789A (en) 2002-06-11
ES2249036T3 (en) 2006-03-16
DE69926893T2 (en) 2006-06-14
DE69926893D1 (en) 2005-09-29
AU4324899A (en) 1999-12-20
EP1091875B1 (en) 2005-08-24

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Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20190603