US1332838A - Method of forming hermetic closures - Google Patents

Method of forming hermetic closures Download PDF

Info

Publication number
US1332838A
US1332838A US88503A US8850316A US1332838A US 1332838 A US1332838 A US 1332838A US 88503 A US88503 A US 88503A US 8850316 A US8850316 A US 8850316A US 1332838 A US1332838 A US 1332838A
Authority
US
United States
Prior art keywords
seam
cement
hermetic
sealing
lacquer
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
US88503A
Inventor
John G Hodgson
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.)
Primerica Inc
Original Assignee
American Can Co
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
Priority to US861534A priority Critical patent/US1332839A/en
Application filed by American Can Co filed Critical American Can Co
Priority to US88503A priority patent/US1332838A/en
Application granted granted Critical
Publication of US1332838A publication Critical patent/US1332838A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B65D7/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal
    • B65D7/12—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls
    • B65D7/34—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls with permanent connections between walls
    • B65D7/36—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls with permanent connections between walls formed by rolling, or by rolling and pressing

Definitions

  • canning vegetables and other food stuffs of various kinds it is a custom to cook the materials after they have been placed in the cans in which they are to be sold to the trade.
  • the cans are permanentl and hermetically closed during or immediately after prevent the entrance of germs and ferments.
  • a further object of the invention is to so cause the formin of a hermetic seal between the can bo y and closure or end that. no mampulatlon by the packer or canner is requlred other than seaming the container in the ordinary manner.
  • FIG. 1 shows a can or container for use according to my invention the same being hermetically sealed.
  • Fig. 2 is a side elevation of the can Body.
  • Fig. 3 is a transverse section of an end or closure for the same;
  • Fig. 4 is a partial transverse sectional view showing the closure and end of the body seamedtogether.
  • the can body 5 in the present instance is provided with outwardly extending flan ed end edges 6 of the ordinary type adaptetf to be turned over, as seen in Fig. 4, in forming the double seam.
  • On the under side of these flanges and extending longitudinally of the body is painted or otherwise provided a film or coating 7 of some gummy material adapted to expand and soften under heat.
  • the extent of this film or coating is preferably such that when the seam is formed the coating will terminate at or about the seam, as seen at 8 in Fig.4.
  • the cover or end 9 in the present instance is provided with an outwardly extending flan e 10 turned down slightly at its edges 11 1n the 13 may be omitted.
  • ⁇ Films 7 and 13 after being placed on the can, are permitted to dry and the form little more than a coat of lacquer o the ordinar thickness in the r dried condition.
  • the coating 7 on the can body is'brought opposite the adjacent surfaces of the cover and the coating 13, if used, is brought opposite the adJacent surface of the can body.
  • These coatin s are providedand are substantially dried fore the ends are sec red to the body and they may be provid if desired, on the blanks before the ends or body are formed.
  • the lacquer or sealing material softens and swells and forms a film adhering to the adjacent surfaces of the body and cover to form a hermetic seal.
  • the manner of forming the double seam is or may be such that horizontal pressure "s thereby applied to the seam so as to tightly compress both the paper liner and the cement, the said sealing elements be ng ordinarily located in the seam one outside of the other with the body flange 6 interposed between them.
  • W ere cans are provided according tov both, it only being necessary for the canner or packer to fill the can with its contents and process'it in the usual manner, the resulting product being hermetically sealed without the necessity of subsequently lacquering the can in the manner earlier described.
  • Such a can filled and sealed in proper manner will hide completely the lacquer film and. an article more pleasing in appearance is thereby produced than is possible where the lacquer is painted over'the seamed ed e after vprocessing.
  • the ac ing 12 is or may e a aper ring liner.
  • he film or coatin 7 may e applied with some accuracy so t at after the seam has been formed said film will be entirely embraced within the seam and will not appear at all on the surface of the body outside of the seam.
  • the two films 7 and 13 unite, so that a single film is in effect formed the inner side of which is hermetically united with the body of the container and the outer side of which ishermetically united with the inturned edge of the cover, and the middle ortion of which consists of the united and in efiect integral film bodies.
  • lacquer The films 7 and 13 or either of them singly I have termed herein as a lacquer. It might be stated, however, that I have only used this term relatively, it may be a lacquer of low melting point, or it may be a fused .cement. It is preferably applied to the flange surfaces in a li uid state and dried by heat or otherwise, an is then fused by the processing heat and caused to'hermetically seal the joint in which it is incorporated.
  • I provide two distinct and separably efiicientsealing means.
  • the first comprising a sealing liner interposed between the under surface of the can cover flange, and the upper-surface of the can body flange; and the second a sealing medium interposed between the wall of the can body andthe outer surface of the can cover flange; this latter sealing medium providing a hermetic joint in a portion of the double seam that has not been sealed hermetically heretofore except as I have mentioned, by applying a sealing compound after the seam was finally completed.
  • a suitable material to act as a lacquer could be made of water white resin stiffened with five to ten per cent. of sandarac to which would be added carnauba wax and about five er cent. of castor oil.
  • a suitab e fusible cement or gum might be made of chicle mixed with some waxy material similar to a high melting parafiin or esmonta wax and filled with magnesium oxid or magnesium carbonate or mixtures of the two, or a mixture of gelatin and glycerin in suitable proportions and properly compounded will form a rubbery com lposition that will fuse under processing eat;
  • a method of forming a hermetic closure between a container body and a cover consistin in coating an end of the container body wit a fusible cement, applying a sealing gasket or material to the seam portion ofa can cover, formin an interfolded joint or seam uniting the body and cover, and applying heat to the seam for fusin the cement and applying pressure, where y the said fusible cement forms a hermetic seal in one portion of the said joint and the said sealing gasket or material forms a hermetic seal in another portion of the said joint.
  • a method of forming a hermetic clo sure between 'a sheet metal body element having an outstanding flange, and a sheet metal end element which consists in applying a sealing liner to one of said elements, coating one of said elements with a fusible cement, bending and'interfolding the parts to which said hner and cement are applied contacting and thereby forming a double seam in which said liner 1s held between the outer face of the flange of the body and the under face of the end, and said cement is held between the vertical exterior face of the body and the contacting face of the said end, and applying by sald formation of the seam horizontal pressure both to said liner and to said cement.
  • a method of forming a hermetic closure between a sheet metal body element having an outstanding flange, and a sheet metal end element, whlch consists in applying a sealing liner to one of said elements, coating one of said elements with a fusible cement, bending and interfolding the parts to which said liner and cement are applied and thereby forming a double scam in which said liner is held between the outer face of the flange of the body and the under face of the end, and said cement is held between the vertical exterior face of the body and the face of the said end, and applying by said formation of the seam horizontal pressure both to said liner and to said cement, and applying heat to the seam for fusing the cement.
  • a method of forming a hermetic closure between a can body and a can end which consists in applying a lacquer to the metal parts which are to be comprised in the outer portion of the seam, drying and hardening said lacquer, applying a gasket so as to fill the inner part of the seam, interfolding the flanges of the can body and can end to form a double seam, and at the same time a plying pressure to the said gasket and to tl' fe said lacquered parts of the seam, and applying heat to cause the lacquer to fill that portion of the seam in which it is inclosed.

Description

J. G. HODGSON.
METHOD OF FQRMING HERMETIC CLOSURES.
I APPLICATION FILED APR. 3. I916- 1,332,838. A Patented Mar. 2,1920.
(/z/m (i/101 :01 4
MQZW
attozmcq .iomr e. noneson, or mrwoon,
ILLINOIS, ASSIGNOB '10 AMERICAN CARI COMPANY,
.e conroaa'rron or NEW JERSEY.
I METHOD OF FORMING HERMETIG CLOSURES.
Original application filed September 14, 1914, Serial No. 861,584. Divided 1916. Serial No. 88,503.
I particularly to the manufacture and use of the cooking process in order to sheet metal containers in the canning industry.
In canning vegetables and other food stuffs of various kinds it is a custom to cook the materials after they have been placed in the cans in which they are to be sold to the trade. In order that the materials being canned may be properly pre served, the cans are permanentl and hermetically closed during or immediately after prevent the entrance of germs and ferments.
It has frequently been the custom pr1or to my invention to permanently close the cans either by seaming or by plugging vents immediately upon the termlnation of the cooking step and to then lacquer the seam or closed vents while the can is still extremely hot and before any contraction of the material takes place. This process has been found efiicient when used in canning food stuffs wherein the period of heating or cooking need not be accurately determined and observed. In the canning of peasand other vegetables, however, where the quality of the cooked product depends in great degree upon the sudden cooling of the can and consequent termination of the cooking step, the method has not been found so satisfactory, in cooking peas and the like it is the custom to immerse the cans in cool or cold water as soon as they are received from the cooking chamber, insufficient time bemg given to apply the coating of lacquer.
It is a purpose of this inventlon to provide a method for preparing the can, and hermetically sealing the can during the cooking or processing operation, so that it will not be necessary to wait until after the can has come from the cooking chamber.
It is a principal object of the present invention to rovide an improved hermetic sealing met 0d, so that the seal automati- Specification of Letters Patent.
Patented Mar. 2, 1920.
and this application filed April 8,
' ca'lly applies itself during the processing of a contamer or can.
A further object of the invention is to so cause the formin of a hermetic seal between the can bo y and closure or end that. no mampulatlon by the packer or canner is requlred other than seaming the container in the ordinary manner.
Other objects and advantages of the invention Will be apparent as it is better understood from the following description when considered in connection with the accompanying drawing illustrating a preferred manner of carrying it into effect.
Referring to the drawing Figure :1 shows a can or container for use according to my invention the same being hermetically sealed.
Fig. 2 is a side elevation of the can Body. Fig. 3 is a transverse section of an end or closure for the same; and
Fig. 4 is a partial transverse sectional view showing the closure and end of the body seamedtogether.
For the purpose of illustrating my inven- 'tion I haveillustrated it in connection with a can of an ordinary and well known type in which the ends and body are joined by a double seam.
The can body 5 in the present instance is provided with outwardly extending flan ed end edges 6 of the ordinary type adaptetf to be turned over, as seen in Fig. 4, in forming the double seam. On the under side of these flanges and extending longitudinally of the body is painted or otherwise provided a film or coating 7 of some gummy material adapted to expand and soften under heat. The extent of this film or coating is preferably such that when the seam is formed the coating will terminate at or about the seam, as seen at 8 in Fig.4. The cover or end 9 in the present instance is provided with an outwardly extending flan e 10 turned down slightly at its edges 11 1n the 13 may be omitted. \ Films 7 and 13, after being placed on the can, are permitted to dry and the form little more than a coat of lacquer o the ordinar thickness in the r dried condition. When t e can is seamed it will be noted that the coating 7 on the can body is'brought opposite the adjacent surfaces of the cover and the coating 13, if used, is brought opposite the adJacent surface of the can body. These coatin s are providedand are substantially dried fore the ends are sec red to the body and they may be provid if desired, on the blanks before the ends or body are formed. When the can has en seamed and is hot from processing 0 in processing, the lacquer or sealing material softens and swells and forms a film adhering to the adjacent surfaces of the body and cover to form a hermetic seal.
The manner of forming the double seam is or may be such that horizontal pressure "s thereby applied to the seam so as to tightly compress both the paper liner and the cement, the said sealing elements be ng ordinarily located in the seam one outside of the other with the body flange 6 interposed between them.
In practice it is customary to secure one end to the can body at the can factory and to supply the other end free of the can to subsequently be positioned and attached by the acker or canner.
W ere cans are provided according tov both, it only being necessary for the canner or packer to fill the can with its contents and process'it in the usual manner, the resulting product being hermetically sealed without the necessity of subsequently lacquering the can in the manner earlier described. Such a can filled and sealed in proper manner will hide completely the lacquer film and. an article more pleasing in appearance is thereby produced than is possible where the lacquer is painted over'the seamed ed e after vprocessing.
The ac ing 12 is or may e a aper ring liner. he film or coatin 7 may e applied with some accuracy so t at after the seam has been formed said film will be entirely embraced within the seam and will not appear at all on the surface of the body outside of the seam. During the processing operation the two films 7 and 13 unite, so that a single film is in effect formed the inner side of which is hermetically united with the body of the container and the outer side of which ishermetically united with the inturned edge of the cover, and the middle ortion of which consists of the united and in efiect integral film bodies.
The films 7 and 13 or either of them singly I have termed herein as a lacquer. It might be stated, however, that I have only used this term relatively, it may bea lacquer of low melting point, or it may be a fused .cement. It is preferably applied to the flange surfaces in a li uid state and dried by heat or otherwise, an is then fused by the processing heat and caused to'hermetically seal the joint in which it is incorporated.
It is also to be noted that I provide two distinct and separably efiicientsealing means. The first comprising a sealing liner interposed between the under surface of the can cover flange, and the upper-surface of the can body flange; and the second a sealing medium interposed between the wall of the can body andthe outer surface of the can cover flange; this latter sealing medium providing a hermetic joint in a portion of the double seam that has not been sealed hermetically heretofore except as I have mentioned, by applying a sealing compound after the seam was finally completed.
The operation of double seaming and finally closing a double seam, containing a packing, into a hermetic joint, requires so much pressure that the metallic surfaces in the seam are pressed so tightly together that it is next to impossible to apply a sealing compound to the interstices of a tightly rolled seam and have it penetrate between the surfaces it is desired to seal, the result being that the seal is made on the outside and the sealing medium is more or less exposed to abrasion or mutilation from the ordinary handling of canned goods.
The fusible seal I apply, however, is incorporated in the seam during its formation,
and when the material is fused by the processing heat, it instantly unites with the surfaces between which it is lodged and produces a hermetic joint separate and distinct from the regular hermetic joint formed by means of the sealing liner interposed in the seam in the ordinary manner.
A suitable material to act as a lacquer could be made of water white resin stiffened with five to ten per cent. of sandarac to which would be added carnauba wax and about five er cent. of castor oil.
A suitab e fusible cement or gum might be made of chicle mixed with some waxy material similar to a high melting parafiin or esmonta wax and filled with magnesium oxid or magnesium carbonate or mixtures of the two, or a mixture of gelatin and glycerin in suitable proportions and properly compounded will form a rubbery com lposition that will fuse under processing eat;
I This application is a division of my application, Serial No. 861,53'i, filed Septemher 14th, 1914.
, end closure,
- It is thou ht that the invention and many of its attendant advantages will be understood from the foregoing description, and it will be apparent that various chan es may be made in the procedure, without eparting from the spirit and scope of the invention or sacrificing any of its material adantages;
What is claimed is:
1. A method of forming a hermetic roll seam joint between a container body and an consisting in forming an outstanding flange on a container body, coating the said flange with a fusible cement, a plying a sealing liner to the outstanding ange of a can cover, interfolding the said flanges into a rolled seam and thereby attaching the can cover to the can body, whereby the sealing liner on the can cover forms a hermetic joint between adjacent surfaces of the seam, and applying heat to the seam for fusing the cement, whereby the fusible cement forms a hermetic joint between adjacent surfaces of the seam, the two joints being independent in their sealin capacities.
2. A method of forming a hermetic closure between a container body and a cover, consistin in coating an end of the container body wit a fusible cement, applying a sealing gasket or material to the seam portion ofa can cover, formin an interfolded joint or seam uniting the body and cover, and applying heat to the seam for fusin the cement and applying pressure, where y the said fusible cement forms a hermetic seal in one portion of the said joint and the said sealing gasket or material forms a hermetic seal in another portion of the said joint.
3. A method of forming a hermetic clo sure between 'a sheet metal body element having an outstanding flange, and a sheet metal end element, which consists in applying a sealing liner to one of said elements, coating one of said elements with a fusible cement, bending and'interfolding the parts to which said hner and cement are applied contacting and thereby forming a double seam in which said liner 1s held between the outer face of the flange of the body and the under face of the end, and said cement is held between the vertical exterior face of the body and the contacting face of the said end, and applying by sald formation of the seam horizontal pressure both to said liner and to said cement.
4. A method of forming a hermetic closure between a sheet metal body element having an outstanding flange, and a sheet metal end element, whlch consists in applying a sealing liner to one of said elements, coating one of said elements with a fusible cement, bending and interfolding the parts to which said liner and cement are applied and thereby forming a double scam in which said liner is held between the outer face of the flange of the body and the under face of the end, and said cement is held between the vertical exterior face of the body and the face of the said end, and applying by said formation of the seam horizontal pressure both to said liner and to said cement, and applying heat to the seam for fusing the cement.
5. A method of forming a hermetic closure between a can body and a can end, which consists in applying a lacquer to the metal parts which are to be comprised in the outer portion of the seam, drying and hardening said lacquer, applying a gasket so as to fill the inner part of the seam, interfolding the flanges of the can body and can end to form a double seam, and at the same time a plying pressure to the said gasket and to tl' fe said lacquered parts of the seam, and applying heat to cause the lacquer to fill that portion of the seam in which it is inclosed.
In testimony whereof I afiixmy signature hereto.
' JOHN G. HODGSON. Witnesses:
J. C. CARPENTER, Es'rnmz ABRAMS.
US88503A 1914-09-14 1916-04-03 Method of forming hermetic closures Expired - Lifetime US1332838A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US861534A US1332839A (en) 1914-09-14 1914-09-14 Cqntainer
US88503A US1332838A (en) 1914-09-14 1916-04-03 Method of forming hermetic closures

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US861534A US1332839A (en) 1914-09-14 1914-09-14 Cqntainer
US88503A US1332838A (en) 1914-09-14 1916-04-03 Method of forming hermetic closures

Publications (1)

Publication Number Publication Date
US1332838A true US1332838A (en) 1920-03-02

Family

ID=26778743

Family Applications (2)

Application Number Title Priority Date Filing Date
US861534A Expired - Lifetime US1332839A (en) 1914-09-14 1914-09-14 Cqntainer
US88503A Expired - Lifetime US1332838A (en) 1914-09-14 1916-04-03 Method of forming hermetic closures

Family Applications Before (1)

Application Number Title Priority Date Filing Date
US861534A Expired - Lifetime US1332839A (en) 1914-09-14 1914-09-14 Cqntainer

Country Status (1)

Country Link
US (2) US1332839A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110110750A1 (en) * 2007-03-08 2011-05-12 Skw Trust Degassing container
US20140328649A1 (en) * 2005-03-01 2014-11-06 Crown Packaging Technology, Inc. Packaging Can and Method and Apparatus for Its Manufacture

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140328649A1 (en) * 2005-03-01 2014-11-06 Crown Packaging Technology, Inc. Packaging Can and Method and Apparatus for Its Manufacture
US9895737B2 (en) * 2005-03-01 2018-02-20 Crown Packaging Technology, Inc. Packaging can and method and apparatus for its manufacture
US20110110750A1 (en) * 2007-03-08 2011-05-12 Skw Trust Degassing container

Also Published As

Publication number Publication date
US1332839A (en) 1920-03-02

Similar Documents

Publication Publication Date Title
US5049019A (en) Methods of making containers
US4253584A (en) Ring and closure for cans
US2047076A (en) Method of making a metal container for beer
US3385470A (en) Containers
US3550832A (en) Sealed containers
US2141556A (en) Sealed container
US2343550A (en) Container and process of making same
US1332838A (en) Method of forming hermetic closures
US2117180A (en) Metal container
US1654318A (en) Paper drinking cup
US2634563A (en) Method of producing bulged containers
US2102208A (en) Process of packaging beer in open top metal containers
US2350312A (en) Can closure and method of making the same
US2178618A (en) Container
US2198630A (en) Container
US1907994A (en) Cap
US2182818A (en) Container closure
US2530787A (en) Paper container
US1373060A (en) Process of preparing sanitary can ends
US2974816A (en) Closing and sealing bottles and other receptacles
US2973116A (en) Container closure
GB2064468A (en) Container seams
US1200282A (en) Process of hermetically closing sardine-cans.
US1231585A (en) Method of packing food products.
US1039753A (en) Closure for hermetically-sealed food-preserving cans.