US3486959A - Method and apparatus for lining a closure - Google Patents

Method and apparatus for lining a closure Download PDF

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Publication number
US3486959A
US3486959A US521569A US3486959DA US3486959A US 3486959 A US3486959 A US 3486959A US 521569 A US521569 A US 521569A US 3486959D A US3486959D A US 3486959DA US 3486959 A US3486959 A US 3486959A
Authority
US
United States
Prior art keywords
cap
sealing
closure
blank
body 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
US521569A
Other languages
English (en)
Inventor
Armando Podesta
Carlo Vignati
Andre Bereziat
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.)
ALUMINIUM FRANCAIS
L'ALUMINIUM FRANCAIS
Original Assignee
ALUMINIUM FRANCAIS
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 ALUMINIUM FRANCAIS filed Critical ALUMINIUM FRANCAIS
Application granted granted Critical
Publication of US3486959A publication Critical patent/US3486959A/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
    • B65D53/00—Sealing or packing elements; Sealings formed by liquid or plastics material
    • B65D53/02—Collars or rings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/38—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures
    • B21D51/44—Making closures, e.g. caps
    • B21D51/46—Placing sealings or sealing material
    • 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
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/40—Cutting-out; Stamping-out using a press, e.g. of the ram type
    • 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
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor
    • B26F2001/4427—Cutters therefor; Dies therefor combining cutting and forming operations
    • 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
    • Y10T156/1062—Prior to assembly
    • Y10T156/107—Punching and bonding pressure application by punch
    • Y10T156/1072—Closure cap liner applying type
    • 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
    • Y10T156/12—Surface bonding means and/or assembly means with cutting, punching, piercing, severing or tearing

Definitions

  • This invention relates to a closure for use in effecting a sealing relationship with the neck of a container and it relates more particularly to a cap or closure embodying such sealing means and to a method and apparatus for the production of same.
  • the closure of this invention is adapted for use with a container or bottle having a neck with a beaded portion at its outer edge in which the summit of the curvature at the outer edge lies in a flat plane.
  • a cap For engagement with the neck of the container for closure thereof, there is provided a cap generally formed with a central body portion that spans the space between the summit edge and is tangent thereto and a skirt portion which extends downwardly from the edge of the body portion adjacent the lateral edge of the bead, when in the assembled relation, and which terminates in an inturned or outturned lower lip which operates to effect a latching engagement with the undesirable of the bead, when in the assembled relation.
  • the cap is provided with sealing means in its inner portions for effecting a fluid-tight seal between the beaded portion of the container and the closure.
  • FIG. 1 is a sectional elevational view of the neck portion of a bottle or container showing the beaded mouth;
  • FIG. 2 is a top plan view of the neck portion of the container shown in FIG. 1;
  • FIG. 3 is a top plan View of a strip of sealing material showing the sealing blank cut out for insertion into the closure;
  • FIG. 4 is a schematic sectional elevational view showing the relative positions of the parts at the initial stages for insertion of the sealing blank into a formed closure;
  • FIG. 5 is a schematic sectional elevational view similar to that of FIG. 4 showing the parts in their relative positions upon completion of the operation for inserting the sealing blank into the closure;
  • FIG. 6 is a sectional elevational view showing a more sophisticated mechanism for the insertion of the sealing blank into the closure.
  • the closure may be positive in nature, that is to say that it has a shape and form whereby any effort tending to tear the closure from the container will tend to effect further compression of the seal thereby to enhance the fluid-tightness.
  • any etfort which tends to tear the cap from the bottle will reduce the compression of the lateral seal and relax the fluid-tightness.
  • the flat annular seal operates to provide the desired sealing relationship to prevent contact between the metal portions of the closure and the fluid within the container.
  • the typical neck 1 of a bottle is formed with a ring or bead b at the mouth having a summit curve 3 at the outer edge in which the tangent thereto lies in the flat plane indicated by the broken lines 2.
  • the summit curve 3 will define a circle; however, the invention is not limited to round necks but can be adapted as well to containers having necks of different shapes such as of elliptical shape, and the like.
  • the invention will be described with reference to a container having a neck of rounded shape and a closure member formed of sheet metal having a central body portion dimensioned to have a radius as great as, if not slightly greater than, the radius of the circle formed by the summit curve 3, a skirt of substantially S-shape depending from the edge of the body portion, and a curvilinear inturned lip at the lower edge of the skirt in position to eiiect locking engagement with the underside of the bead at the mouth of the container when the closure is applied in position of use on the container.
  • the sealing members are provided in the closure in two stages including a first stage addressed to the preparation of a sealing blank and a second stage addressed to the insertion of the blank into the closure including the separation thereof into two parts, one of which forms the lateral seal and the remainder of which forms the plane seal lining the body portion of the closure.
  • the sealing blank is cut from a thin strip of a suitable flexible sealing material with inner cuts or slits 11, 12 and 13 arranged about an arc of a circle having a radius which is slightly greater than the radius of the circle formed by the summit curve but in which the slits are unconnected one to the other to provide narrow intervening sections 14, 15 and 16 which serve temporarily to hold the central portion 17 in the blank. It is desirable to make use of at least three slits, as illustrated in FIG. 3, although more arcuate slits may be cut with intervening connecting zones, without departing from the spirit of the invention.
  • the sealing blank is cut out along the line 19 which defines a circle concentric with the slits 11, 12 and 13 but having a radius which is 1.1 to 2 times the radius of the summit curve and preferably within the range of 1.25 to 1.6 times the radius of the summit curve to provide an outer disc section 18 connected to the central section 17 by the portions 14, 15 and 16 between the slits.
  • the sealing blank can be cut out from the strip in a single step as by means of a cutout punch.
  • the slits and cutouts will correspond to the shape of the summit curve of the head but of the increased dimension in the proportions previously described for the circular neck.
  • the cutout sealing blank is inserted into the molded cap 4 by means of a pusher member 20 having a rim portion in the form of a straight cylindrical section having a base of curvilinear cross-section intermediate the summit curve 3 of the container and the curve formed by the slits 11, 12 and 13.
  • the sealing blank When the rim is displaced in the direction towards the base of the cap, while the latter is at rest on the support 21, the sealing blank is engaged by the rim and is displaced therewith downwardly into the cap.
  • the frictional resistance operates to tear or otherwise separate the central portion 17 from the outer portion 18 whereby the rim continues to displace the central portion 17 downwardly against the flat body portion 5 of the cap while the outer disc portion 18 is pushed outwardly by the rim against the lateral skirt portion 6 of the cap.
  • sealing material formed of a thermoplastic substance and heat is applied to raise the sealing material to a temperature within the range of 50100 0, depending somewhat upon the material used to reduce the sealing material to an adhesive stage for bonding the sealing member to the metal cap.
  • the sealing member is formed of plastic material such as a film or foil of polyvinyl chloride, polyethylene, polypropylene, polyamide, polytetrafluoroethylene, or a laminate of paper and plastic foil or a latex coated paper. It is preferred to make use of polyethylene because of its desirable physical properties and low cost and because it readily adheres to the metal of which the cap is formed when heated to an elevated temperature such as 70 C.
  • the thickness of the foil of plastic material can be varied over a fairly wide range but it is preferred to make use of a strip of foil having a thickness within the range of 0.1 to 1 mm. and preferably of the order of about .3 mm.
  • a guide socket 40 having an internal bore dimensioned to correspond with the dimension and shape of the cap and having an annular flanged portion 42 which extends curvilinearly inwardly from the side wall to define an opening therebetween corresponding to the crosssectional dimension of the portion of the cap between the locking lip sections.
  • the portion of the guide socket beneath the flanged section 42 comprises a bottom housing 41 in which the cap 4 is inserted with the locking end lips underlying the flanges 42 as the cap rests with its base on the support 30.
  • the sealing blank 17 is inserted into the upper portion of the bore above the flanged portion 42.
  • a ram 50 Shiftable endwise into the bore of the guide socket is a ram 50 having a head 51 with a plurality of elongate resilient fingers 52 depending therefrom as spaced tongues having a lower curvilinear outer edge and which together define a cylindrical section concentric with the periphery of the bore.
  • the fingers 52 slide along the inside wall of the socket for displacement of the inserted sealing blank into the cap upon engagement therewith.
  • the fingers are displaced onto the flanged portions 42 they are cammed inwardly in the direction towards each other and as the sealing blank 17 penetrates the narrowest portion of the socket member between flange members 42, it is separated into the two parts 17 and 18.
  • the central portion 17 is displaced downwardly by the ends of the fingers onto the base portion 5 of the cap while the lateral disc portion 18 of the sealing member slides off to the outside of the fingers and is pressed against the lateral skirt portion 6 of the cap.
  • the ram can be modified to include a flat central hammer (not shown) within the area defined by the spring fingers and which is dimensioned to have a length to extend for a distance equal to the spring fingers and preferably slightly beyond the ends thereof to engage the central portion 17 of the sealing member and which operates strongly to press the central portion 17 of the sealing blank against the body portion of the cap 4 to eflect a bonded relationship. It is desirable to again make use of heat suflicient to enhance softening of the thermoplastic material for improving the bonded relation.
  • a cap for closure of the neck of a container having a rounded lip at the mouth thereof which defines a summit curve in a flat plane and in which the cap has a flat central body portion shaped to correspond to the summit curve and dimensioned to be slightly greater in cross-section than the summit curve, a skirt portion depending from the edge of the body portion and a curvilinear rim on the end of the skirt adapted to effect latching engagement with the underside of the lip when the cap is in position of use as a closure
  • the improvement comprising providing a sealing blank from a strip of sealing material in which the blank is shaped to correspond to the summit curve and dimensioned to have a cross-section 1.1 to 2 times larger than the cross-sectional dimensions of the summit curve and a series of slits spaced inwardly from the edge but spaced outwardly of the outline of the summit curve to subdivide the sealing blank into a central body portion and an outer disc portion with the slits being unconnected one with the other to provide an intermediate section interconnect
  • sealing blank is formed of a heat softenable plastic ma terial.
  • the sealing blank when the summit curve is circular, is of circular shape having a radius which is 1.1 to 2 times the radius of the summit curve and in which the slits define a circle having a radius less than the radius of the sealing blank but slightly greater than the radius of the summit curve.
  • An apparatus for the insertion of a sealing blank into a cap for effecting a lateral seal and a plane seal in which the cap has a flat central body portion, a skirt portion depending from the outer edges of the body portion and a curvilinear rim on the end of the skirt and in which the sealing blank is shaped to correspond to the shape of the closure and dimensioned to be larger in cross-section than the cross-sectional dimensions of the body portion of the closure with at least three slits spaced inwardly from the edge of the blank concentrically therewith to subdivide the sealing blank into a central body portion and an outer disc portion with the slits being unconnected one with the other to provide narrow sections in between which hold the disc and body portions together, said apparatus comprising a support on which the cap rests, a punch formed of -a head section and a plurality of elongate resilient strips depending from the head section in a pattern corresponding to the shape of the sealing blank and positioned to engage the sealing blank within the area between the slitted portion and the
  • the punch includes in addition to the head and resilient strips, a central ram dimensioned to have a length at least as great as the resilient strips for engagement with the central portion of the sealing blank to press said central portion against the central body portion of the cap.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Closures For Containers (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
  • Apparatus For Making Beverages (AREA)
US521569A 1965-01-19 1966-01-19 Method and apparatus for lining a closure Expired - Lifetime US3486959A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2462A FR1431742A (fr) 1965-01-19 1965-01-19 Procédé pour la fabrication de joints d'étanchéité pour capsule destinée au bouchage hermétique des corps creux munis d'un goulot, appareillage mettant ce procédé en oeuvre et joints obtenus

Publications (1)

Publication Number Publication Date
US3486959A true US3486959A (en) 1969-12-30

Family

ID=8568652

Family Applications (1)

Application Number Title Priority Date Filing Date
US521569A Expired - Lifetime US3486959A (en) 1965-01-19 1966-01-19 Method and apparatus for lining a closure

Country Status (12)

Country Link
US (1) US3486959A (US20050065096A1-20050324-C00034.png)
AT (1) AT268918B (US20050065096A1-20050324-C00034.png)
BE (1) BE675195A (US20050065096A1-20050324-C00034.png)
CH (1) CH426531A (US20050065096A1-20050324-C00034.png)
ES (1) ES321895A1 (US20050065096A1-20050324-C00034.png)
FR (1) FR1431742A (US20050065096A1-20050324-C00034.png)
GB (1) GB1081381A (US20050065096A1-20050324-C00034.png)
IL (1) IL24992A (US20050065096A1-20050324-C00034.png)
LU (1) LU50268A1 (US20050065096A1-20050324-C00034.png)
NL (1) NL6600615A (US20050065096A1-20050324-C00034.png)
OA (1) OA02642A (US20050065096A1-20050324-C00034.png)
SE (1) SE309017B (US20050065096A1-20050324-C00034.png)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4719740A (en) * 1986-10-22 1988-01-19 Sunbeam Plastics Corporation Tamper indicating hermetic seal
US4728239A (en) * 1986-10-17 1988-03-01 Top Seal Corporation Cap lining machine
WO2008040671A1 (en) * 2006-10-02 2008-04-10 Crown Packaging Technology, Inc Closure with sealing insert

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2910397A (en) * 1956-12-13 1959-10-27 Owens Illinois Glass Co Method of producing closure assembly

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2910397A (en) * 1956-12-13 1959-10-27 Owens Illinois Glass Co Method of producing closure assembly

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4728239A (en) * 1986-10-17 1988-03-01 Top Seal Corporation Cap lining machine
US4719740A (en) * 1986-10-22 1988-01-19 Sunbeam Plastics Corporation Tamper indicating hermetic seal
WO2008040671A1 (en) * 2006-10-02 2008-04-10 Crown Packaging Technology, Inc Closure with sealing insert
US20100006574A1 (en) * 2006-10-02 2010-01-14 Crown Packaging Technology, Inc. Closure with sealing insert
US8424706B2 (en) 2006-10-02 2013-04-23 Crown Packaging Technology, Inc. Closure with sealing insert

Also Published As

Publication number Publication date
LU50268A1 (US20050065096A1-20050324-C00034.png) 1966-07-18
IL24992A (en) 1969-12-31
FR1431742A (fr) 1966-03-18
GB1081381A (en) 1967-08-31
SE309017B (US20050065096A1-20050324-C00034.png) 1969-03-10
OA02642A (fr) 1970-12-15
CH426531A (fr) 1966-12-15
NL6600615A (US20050065096A1-20050324-C00034.png) 1966-07-20
BE675195A (US20050065096A1-20050324-C00034.png) 1966-07-18
ES321895A1 (es) 1967-02-01
AT268918B (de) 1969-02-25

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