US3744668A - Score edge protection - Google Patents

Score edge protection Download PDF

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Publication number
US3744668A
US3744668A US00059931A US3744668DA US3744668A US 3744668 A US3744668 A US 3744668A US 00059931 A US00059931 A US 00059931A US 3744668D A US3744668D A US 3744668DA US 3744668 A US3744668 A US 3744668A
Authority
US
United States
Prior art keywords
panel
container
compound
band
panel portion
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 - Lifetime
Application number
US00059931A
Other languages
English (en)
Inventor
H Bartels
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.)
Continental Can Co Inc
Original Assignee
Continental Can Co Inc
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 Continental Can Co Inc filed Critical Continental Can Co Inc
Application granted granted Critical
Publication of US3744668A publication Critical patent/US3744668A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/28—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness
    • B65D17/401—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness characterised by having the line of weakness provided in an end wall
    • B65D17/4011—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness characterised by having the line of weakness provided in an end wall for opening completely by means of a tearing tab
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S220/00—Receptacles
    • Y10S220/906—Beverage can, i.e. beer, soda

Definitions

  • the panel portion is normally defined by a score line along which the container is ruptured, thereby permitting the displacement of the diisplaceable panel portion.
  • the resultant raw edge is very sharp and may cause injury. It is proposed to mask the resultant raw edgeby applying to the container a band of adhesive compound on at least one surface thereof with the adhesive compound being bonded to the container at opposite sides of the score line. When this displaceable panel portion is displaced, the compound will remain attached to the container surrounding the dispensing opening formed in the displacement of the panel portion and automatically mask the raw edge.
  • the score shield is in the form of a relatively rigid ring which is either adhesively bonded to the underside of an end panel or is secured in the corner between and in the unit in a container body.
  • the Stec patent in no way suggests the use of an inexpensive compound which extends across a weakening line of an easy opening container panel and which is initially bonded to the container panels on opposite sides of a weakening line.
  • the undesired raw edge resulting from the displacement of a removable panel portion of an easy opening container by a tearing operation is accomplished by simply applying to the container panel a band of adhesive compound, which adhesive compound extends to opposite sides of the weakening line and which compound has sufficient cohesion to resist tearing apart whereby when a displaceable panel portion is displaced, the band of compound will remain adhered to the main portion of the container and will mask the resultant raw edge.
  • a principal feature of the adhesive compound is that it may be a conventional compound which is readily available and which may be applied in the same manner as compound which is now applied to end units for the sealing of seams whereby the added expense of the adhesive compound is relatively brightally feasible.
  • a further feature of the invention is that the adhesive compound, being one acceptable in the canning industry will be well known for its non-contamination properties and therefore clearly acceptable.
  • a further feature of the invention is that the customary container is provided with a corner into which the adhesive compound may flow with the corner defining a boundary of the band of adhesive compound and furthermote providing for a maximum of adhesion between the band of compound and that portion of the container which remains after the displaceable panel has been displaced.
  • FIG. 1 is a bottom perspective view of an end unit incorporating the band of adhesive compound.
  • FIG. 2 is an enlarged fragmentary vertical sectional view taken along the line 2-2 of FIG. 1 and shows specifically the relationship of the adhesive compound to the end unit construction.
  • FIG. 3 is an enlarged fragmentary sectional view taken through one end of a container and shows the progressive stripping of the disclosable panel portion from the band of compound.
  • FIG. 4 is a fragmentary sectional view similar toFIG. 3 and shows the displaceable panel unit displaced and the band of compound masking'the resultant rawed g'e.
  • FIG. 1 an end unit which is generally identified by the numeral 5.
  • the illustrated end unit 5 is a conventional easy opening end unit which has been modified in accordance with this invention.
  • the end unit 5 includes a central end panel 6 which is surrounded by a shock absorbing bead 7, the bead 7 being partially formed by a continuation of a chuck wall 8.
  • the chuck wall 8 terminates in the usual seaming curl 10.
  • the end unit 5 being an easy opening end unit, is provided with a line of weakening in the form of score 11, defining a displaceable panel portion 12.
  • the illustrated end unit 5 is in the form of a full opening end unit with the result that the displaceable panel portion 12 is formed of a major portion of the end panel 6and is entirely removable.
  • the configuration of the score line 11 and the displaceable panel portion 12 defined thereby may vary in accordance with the desired configuration of the dispensing opening. It will also be readily apparent that it is not absolutely necessary that the displaceable panel portion 12 be fully removable.
  • the displaceable panel portion .12 will be removable or displaceable in the customary manner and that for this purpose the end unit 5 will be providedwith a selected form of pull member (not shown) which may be secured to the panel portion low and therefore com- 12 in any desired manner, such as by the illustrated ing a very sharp raw edge.
  • This raw edge if engaged by ones fingers or hand, will often cut or scrape.
  • the raw edge will automatically be masked by means of a band 14 of adhesive compound which is preferably secured to the underside of the end panel 6 in alignment with the score line 11 and projecting on opposite sides thereof, that is outwardly and inwardly thereof.
  • the adhesive compound 14 may be selected from well known types of adhesive compounds and is preferably one which will directly bond to the coatings which are commonly applied to end units. In the case of plain end units, it may be of the type which will directly bond to the plain metal of the end unit.
  • the shock absorbing bead 7 is partially defined by an internal flange 15 which is disposed adjacent the score line 11 and which, together with the adjacent portion of the end panel 6 defines a corner 16.
  • the flange 15, when it exists, may be utilized as a boundary for the adhesive compound of the band 14 as it is applied. Also, by applying the adhesive compound to the band 14 in the corner 16, a greater adhesion of the band 14 to the unit 5 outwardly of the score line 11 and to the displaceable panel portion 12 is assured.
  • the 'end unit 5 will be secured to a container body 17 in any conventional manner, including the illustrated double seam 18 (FIG. 3). It will be seen that in the preferred embodiment of the invention, the band 14 of adhesive compound is fully applied to the end unit 5 prior to the securement of the end unit 5 to the container body 17. This permits the ease of application of the adhesive compound and the adhesive compound may be readily applied in any conventional manner, preferably by extruding the same from a nozzle onto the end unit while the end unit is rotating.
  • the invention does not preclude the application of the band 14 of adhesive compound after the seaming of the end unit to the container body and in the event the end unit is not provided with a shock absorbing bead, the adhesive compound of the band 14 could extend into the comer of the container.
  • adhesive material of the band 14 is sufficiently cohesive so as to assure against the internal separation thereof while the panel portion 21 is being peeled therefrom.
  • a container panel having a displaceable panel portion defined by a line of weakening and adapted to form a dispensing opening when said panel portion is displaced, and a band of adhesive compound secured to at least one surface of said container panel in alignment with said line of weakening and extending on both sides of said line of weakening, and said band of compound having a. sufficient bond with said container panel portion to remain attached to said container panel when said displaceable panel portion is displaced and sufficient cohesion to resist tearing apart and to be separated from said displaceable panel portion when said displaceable panel portion is displaced to mask a resultant raw edge formed along said line of weakening.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers Opened By Tearing Frangible Portions (AREA)
  • Closures For Containers (AREA)
US00059931A 1970-07-31 1970-07-31 Score edge protection Expired - Lifetime US3744668A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US5993170A 1970-07-31 1970-07-31

Publications (1)

Publication Number Publication Date
US3744668A true US3744668A (en) 1973-07-10

Family

ID=22026214

Family Applications (1)

Application Number Title Priority Date Filing Date
US00059931A Expired - Lifetime US3744668A (en) 1970-07-31 1970-07-31 Score edge protection

Country Status (6)

Country Link
US (1) US3744668A (enExample)
CA (1) CA950384A (enExample)
DE (1) DE2114154A1 (enExample)
FR (1) FR2099715B1 (enExample)
GB (1) GB1350674A (enExample)
ZA (1) ZA708382B (enExample)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3809283A (en) * 1969-05-22 1974-05-07 Continental Can Co Protective score shield for easy opening container
US3855026A (en) * 1971-07-14 1974-12-17 Sonoco Products Co Method of manufacturing container end with protective bead
US3856179A (en) * 1971-07-14 1974-12-24 Sonoco Products Co Container end with protective bead
US3877605A (en) * 1973-09-19 1975-04-15 American Can Co Easy opening container with safety edge compounds
USD393205S (en) 1997-01-31 1998-04-07 Josephus Ignatius Matthias Jansen Can
US20080047922A1 (en) * 2006-08-22 2008-02-28 Olson Christopher J Metal bottle seal
US10723906B2 (en) * 2011-12-02 2020-07-28 Ppg Industries Ohio, Inc. Coating composition for a food or beverage can

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3809283A (en) * 1969-05-22 1974-05-07 Continental Can Co Protective score shield for easy opening container
US3855026A (en) * 1971-07-14 1974-12-17 Sonoco Products Co Method of manufacturing container end with protective bead
US3856179A (en) * 1971-07-14 1974-12-24 Sonoco Products Co Container end with protective bead
US3877605A (en) * 1973-09-19 1975-04-15 American Can Co Easy opening container with safety edge compounds
USD393205S (en) 1997-01-31 1998-04-07 Josephus Ignatius Matthias Jansen Can
US20080047922A1 (en) * 2006-08-22 2008-02-28 Olson Christopher J Metal bottle seal
US10384838B2 (en) 2006-08-22 2019-08-20 Stolle Machinery Company, Llc Metal bottle seal
US10723906B2 (en) * 2011-12-02 2020-07-28 Ppg Industries Ohio, Inc. Coating composition for a food or beverage can

Also Published As

Publication number Publication date
GB1350674A (en) 1974-04-18
DE2114154A1 (de) 1972-02-10
FR2099715A1 (enExample) 1972-03-17
ZA708382B (en) 1972-07-26
FR2099715B1 (enExample) 1975-09-26
CA950384A (en) 1974-07-02

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