CA2588557A1 - Packaging apparatus and method - Google Patents

Packaging apparatus and method Download PDF

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Publication number
CA2588557A1
CA2588557A1 CA002588557A CA2588557A CA2588557A1 CA 2588557 A1 CA2588557 A1 CA 2588557A1 CA 002588557 A CA002588557 A CA 002588557A CA 2588557 A CA2588557 A CA 2588557A CA 2588557 A1 CA2588557 A1 CA 2588557A1
Authority
CA
Canada
Prior art keywords
item
web portions
web
contact members
portions
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
CA002588557A
Other languages
French (fr)
Other versions
CA2588557C (en
Inventor
Laurence B. Sperry
Anthony O. Davlin
Eric A. Kane
Jesse S. Drake
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.)
Sealed Air Corp
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2588557A1 publication Critical patent/CA2588557A1/en
Application granted granted Critical
Publication of CA2588557C publication Critical patent/CA2588557C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/02—Enclosing successive articles, or quantities of material between opposed webs
    • B65B9/026—Enclosing successive articles, or quantities of material between opposed webs the webs forming a curtain
    • 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
    • B65B49/00—Devices for folding or bending wrappers around contents
    • B65B49/06—Resilient folders, e.g. brushes, diaphragms
    • 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
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/12—Applying or generating heat or pressure or combinations thereof by resilient means, e.g. brushes

Abstract

The invention relates to an apparatus for packaging an item, comprising: a supply of flexible packaging material defining two web portions, a layer of cohesive being disposed on a face of each of the web portions, the cohesive being sealable to itself by application of pressure without heat; a web supply and drive system for supplying and advancing the two web portions such that the web portions are generally parallel and the faces having the cohesive are opposing each other at an item-receiving station at which an item to be packaged is placed between the opposing web portions, the web portions defining opposite longitudinal edges;
a pair of side seal devices respectively arranged at locations adjacent but spaced from opposite sides of the item being packaged, the side seal devices being operable to seal the web portions together at said locations by application of pressure on the web portions without heat; and a cross seal device operable to seal the web portions together at locations ahead of and behind the item being packaged, by application of pressure without heat.
The invention also relates to a method of packaging an item.

Claims (25)

1. A method of packaging an item, comprising the steps of:
positioning two web portions such that one face of one web portion faces one face of the other web portion;

disposing an item between the web portions, the web portions being sized such that a marginal region of each of the web portions extends beyond all edges of the item;

providing a layer of cohesive on the face of at least the marginal region of each of the web portions, the cohesive being sealable to itself by application of the pressure alone;

bringing the web portions together such that the cohesive on the marginal region of one of the web portions contacts the cohesive on the marginal region of the other web portion; and applying pressure alone to at least the marginal regions of the web portions so as to seal the marginal regions together to enclose the item.
2. The method of claim 1, wherein the web portions comprise continuous flexible packaging material, and further comprising the step of passing the web portions with the item therebetween through a nip formed by a pair of rolls, at least one of the rolls having a resiliently compliant roll portion that is radially compressed and deformed by the item passing through the nip, the resiliently compliant roll portion pressing the web portions to closely conform to the item and to adhere to each other around the item to form a package enclosing the item.
3. The method of claim 2, further comprising the step of severing the package from the remainder of the web portions.
4. The method of claim 2, wherein each of the rolls has the resiliently compliant roll portion, the item radially compressing and deforming both resiliently compliant roll portions which press the web portions against the item and substantially center the item with respect to the web portions in a thickness direction thereof.
5. The method of claim 1, further comprising the step of sealing the marginal regions of the web portions to each other at locations spaced transversely inward from opposite longitudinal edges of the web portions and spaced from and closely adjacent to opposite side edges of the item so as to substantially fix the item in position transversely and prevent the item from shifting toward either longitudinal edge of the web portions.
6. The method of claim 5, wherein the sealing step comprises forming non-contiguous first and second seals respectively adjacent the opposite side edges of the item, and wherein each of the first and second seals is formed by pressing the web portions between a pair of contact members while longitudinally advancing the web portions.
7. The method of claim 5, wherein the sealing step comprises forming a first seal that extends from adjacent one longitudinal edge of the web portions up to one of said locations adjacent the item, and forming a second seal that extends from adjacent the other longitudinal edge of the web portions up to the other of said locations adjacent the item.
8. The method of claim 7, wherein each of the first and second seals is formed to have a profile generally convex toward the item.
9. The method of claim 7, wherein each of the first and second seals is formed by pressing the web portions between a pair of contact members and longitudinally advancing the web portions while traversing the contact members transversely inward toward the item.
10. The method of claim 9, wherein traversing of the contact members inwardly is halted in response to detecting proximity of the contact members to the item.
11. The method of claim 10, wherein the contact members are traversed by an electric motor and the step of detecting proximity of the contact members to the item comprises at least in part detecting when a current supplied to the motor equals or exceeds a predetermined threshold level.
12. The method of claim 1, further comprising the steps of:
determining a height of the item to be packaged; and severing the web portions along each of two transverse lines respectively spaced downstream and upstream of the item so as to produce a discrete package, wherein a location of each of the transverse lines with respect to the web portions in a longitudinal direction thereof is a function of the height of the item.
13. The method of claim 12, wherein the step of determining the height of the item comprises measuring the height with a height detector.
14. The method of claim 12, wherein the step of severing the web portions comprises advancing the web portions by an index distance and bringing the web portions to a halt and severing the web portions along the downstream line, and then advancing the web portions by said index distance and bringing the web portions to a halt and severing the web portions along the upstream line, wherein the index distance is determined as a function of the height of the item and a length of the item in the longitudinal direction.
15. An apparatus for packaging an item, comprising:

a supply of flexible packaging material defining two web portions, a layer of cohesive being disposed on a face of each of the web portions, the cohesive being sealable to itself by application of pressure without heat;
a web supply and drive system for supplying and advancing the two web portions such that the web portions are generally parallel and the faces having the cohesive are opposing each other at an item-receiving station at which an item to be packaged is placed between the opposing web portions, the web portions defining opposite longitudinal edges;

a pair of side seal devices respectively arranged at locations adjacent but spaced from opposite sides of the item being packaged, the side seal devices being operable to seal the web portions together at said locations by application of pressure on the web portions without heat; and a cross seal device operable to seal the web portions together at locations ahead of and behind the item being packaged, by application of pressure without heat.
16. The apparatus of claim 15, wherein each side seal device comprises a pair of opposed contact members to press the web portions together.
17. The apparatus of claim 16, wherein the side seal devices are adjustable in position in the transverse direction of the web portions for accommodating items of different widths.
18. The apparatus of claim 16, wherein the contact members comprise balls mounted to roll freely along the web portions.
19. The apparatus of claim 16, wherein each of the side seal devices is carried transversely inward and outward by a traversing device.
20. The apparatus of claim 19, wherein the traversing device is operable to detect when the contact members of each side seal device are closely adjacent to but spaced from the item being packaged.
21. The apparatus of claim 20, wherein the traversing device includes an electric motor for moving the contact members inward and outward, and the traversing device is operable to monitor current supplied to the electric motor and to stop inward movement of the contact members when the current reaches or exceeds a predetermined threshold value.
22. The apparatus of claim 20, wherein the traversing device monitors transverse position of the contact members.
23. The apparatus of claim 15, further comprising a cut-off device downstream of the item-receiving station for severing the web portions along a cut line to separate the web portions into discrete packages.
24. The apparatus of claim 23, further comprising a height detector for detecting a height dimension of the item being packaged and a controller connected to the height detector and to the web supply and drive system and cut-off device, the controller being operable to coordinate operation of the cut-off device and the web supply and drive system so as to cause the cut line to be spaced from an adjacent edge of the item by a spacing distance that is proportional to the height dimension of the item.
25. The apparatus of claim 15, further comprising:
a pair of rolls forming a nip through which the web portions with the item are passed, at least one of the rolls having a resiliently compliant roll portion that is radially compressed and deformed by the item passing through the nip, the resiliently compliant roll portion pressing the web portions to closely conform to the item and to adhere to each other around the item to form a package enclosing the item.
CA2588557A 2002-09-09 2003-09-08 Packaging apparatus and method Expired - Fee Related CA2588557C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/237,507 2002-09-09
US10/237,507 US6895732B2 (en) 2002-09-09 2002-09-09 Packaging apparatus and method
CA002439770A CA2439770C (en) 2002-09-09 2003-09-08 Packaging apparatus and method

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA002439770A Division CA2439770C (en) 2002-09-09 2003-09-08 Packaging apparatus and method

Publications (2)

Publication Number Publication Date
CA2588557A1 true CA2588557A1 (en) 2004-03-09
CA2588557C CA2588557C (en) 2010-05-25

Family

ID=31715337

Family Applications (2)

Application Number Title Priority Date Filing Date
CA2588557A Expired - Fee Related CA2588557C (en) 2002-09-09 2003-09-08 Packaging apparatus and method
CA002439770A Expired - Fee Related CA2439770C (en) 2002-09-09 2003-09-08 Packaging apparatus and method

Family Applications After (1)

Application Number Title Priority Date Filing Date
CA002439770A Expired - Fee Related CA2439770C (en) 2002-09-09 2003-09-08 Packaging apparatus and method

Country Status (6)

Country Link
US (2) US6895732B2 (en)
EP (3) EP1942057B1 (en)
AT (3) ATE516207T1 (en)
CA (2) CA2588557C (en)
DE (2) DE60331116D1 (en)
ES (3) ES2307877T3 (en)

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Also Published As

Publication number Publication date
CA2439770C (en) 2007-08-21
US20050060960A1 (en) 2005-03-24
CA2439770A1 (en) 2004-03-09
US6895732B2 (en) 2005-05-24
ES2367082T3 (en) 2011-10-28
ATE516207T1 (en) 2011-07-15
EP1396428A2 (en) 2004-03-10
US20040045261A1 (en) 2004-03-11
ES2307877T3 (en) 2008-12-01
ES2338188T3 (en) 2010-05-04
EP1942057B1 (en) 2010-01-20
EP1930242A3 (en) 2008-06-18
US6971221B2 (en) 2005-12-06
DE60331116D1 (en) 2010-03-11
DE60321280D1 (en) 2008-07-10
EP1396428A3 (en) 2004-05-26
EP1396428B1 (en) 2008-05-28
EP1930242A2 (en) 2008-06-11
ATE396921T1 (en) 2008-06-15
EP1942057A1 (en) 2008-07-09
CA2588557C (en) 2010-05-25
ATE455701T1 (en) 2010-02-15
EP1930242B1 (en) 2011-07-13

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