US3369340A - Apparatus for sealing containers - Google Patents

Apparatus for sealing containers Download PDF

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Publication number
US3369340A
US3369340A US451709A US45170965A US3369340A US 3369340 A US3369340 A US 3369340A US 451709 A US451709 A US 451709A US 45170965 A US45170965 A US 45170965A US 3369340 A US3369340 A US 3369340A
Authority
US
United States
Prior art keywords
closure
container
pressure block
sealing
reforming
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
US451709A
Other languages
English (en)
Inventor
Frank M Kelly
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.)
Alcoa Corp
Original Assignee
Aluminum Company of America
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 Aluminum Company of America filed Critical Aluminum Company of America
Priority to US451709A priority Critical patent/US3369340A/en
Priority to JP41026710A priority patent/JPS5019992B1/ja
Application granted granted Critical
Publication of US3369340A publication Critical patent/US3369340A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67B—APPLYING CLOSURE MEMBERS TO BOTTLES JARS, OR SIMILAR CONTAINERS; OPENING CLOSED CONTAINERS
    • B67B3/00—Closing bottles, jars or similar containers by applying caps
    • B67B3/02—Closing bottles, jars or similar containers by applying caps by applying flanged caps, e.g. crown caps, and securing by deformation of flanges
    • B67B3/10—Capping heads for securing caps
    • B67B3/18—Capping heads for securing caps characterised by being rotatable, e.g. for forming screw threads in situ

Definitions

  • ABSTRACT OF THE DISCLOSURE A method of vacuumizing and sealing containers by frictionally engaging a closure loosely fitted on a container with a pressure block, raising the block and frictionally engaged closure, injecting gas beneath the closure, lowering the block and frictionally engaged closure to seal the container, reforming the closure about the container mouth, securing the closure to the container, and removing the sealed container from the pressure block.
  • This invention relates to a method and apparatus for sealing containers and, more particularly, to a method and apparatus for producing vacuum sealed containers.
  • FIG. 1 is an enlarged sectional view of a sealing unit adapted to be used with this invention
  • FIG. 2 is an enlarged sectional view of a pressure block about to engage a closure loosely fitted on a container
  • FIG. 3 is similar to FIG. 2 but shows the pressure block in engagement with the closure
  • FIG. 4 is a similar view of the pressure block holding the closure above the container while steam is introduced;
  • FIG. 5 is a similar view of the closure reseated on the container and reformed thereon by the pressure block;
  • FIG. 6 is an enlarged section of the holding and reforming pressure block employed as part of the sealing unit shown in FIG. 1.
  • FIG. 1 shows a single sealing unit suitable for use in accordance with this invention.
  • the sealing head 6 houses a pressure block 3 and knock-out plunger 4.
  • the lower portion of the pressure block has an annular wall 8 in which a substantially cylindrical closure-receiving orifice 12 is formed and within which the knock-out plunger 4 is movable.
  • the lower portion of the wall 8 is undercut to provide an interior annular concave surface 9 bounded at the bottom by end 10 of end wall 8 and at the top by lower end 11 of the interior wall 8, small corner fillets being provided at both of the ends thereof.
  • the portion of the orifice 12 defined by the concave surface 9 is nearly the same in size as the portion of the closure to be received therein.
  • FIG. 1 shows a container 1, supported on a container pedestal 7, with a closure 2 loosely applied thereto, being brought under a sealing head 6.
  • the pressure block 3 which is centered over the container and closure is lowered to the position shown in FIG. 2, with the lower edge of the knock-out plunger 4 being above the corner intersection of surface 9 and wall 8 at location 11.
  • continued downward movement of the pressure block results: in the concave surface 9 coming into frictional engagement with the closure 2.
  • the pressure block 3 is then raised with the frictionally engaged closure 2 being lifted from the container ll.
  • the diameter at corner 11 should be greater than the exterior diameter of the container at the container mouth.
  • the bottom of the knock-out plunger 4 bears on the closure panel 15. While the closure is restrained in this fashion, it is secured to the container by thread rolling dies 13 (FIG. 1), which form threads in the closure skirt 16.
  • the sealed container is then released by raising the pressure block 3 while maintaining the position of the knock-out plunger 4 in bearing relationship wit-h the closure panel 15 until the pressure block 3 is out of contact with the closure, and subsequently raising the knock-out plunger.
  • the uniquely designed pressure block of this invention permits positive mechanical raising of a closure during the purging operation and subsequent reseating of the closure with contemporaneous reforming of same to conform to the configuration of the container finish. While the closure is restrained in this position, threads may be placed in the closure skirt. It will be appreciated that complete control of the closure is maintained from the time of initial frictional engagement by the pressure block 3 until the container is fully sealed.
  • pressure block thus permits firm mechanical engagement with a closure and, where desired, reforming of the closure. Reforming the closure while it is on the container produces a tight seal which can compensate for container imperfections without reducing production speeds.
  • pressure block design facilitates hold down of the closure during the sealing or thread rolling stage.
  • a lug type closure might be secured to a container in a manner similar to that employed with threaded closures.
  • press-on type closures the downward force of the pressure block, with or without reforming, may be employed to secure the closure and seal the container.
  • the containers and closures may be made of numerous suitable materials.
  • the containers may conveniently be made of glass, plastic, metal or other substantially rigid material.
  • the closures might be made of plastic or metal, such as tin plate or aluminum, for example.
  • the concave surface 9 meet the pressure block bottom 14 in a fillet that is generally curved as at 10. This also serves to avoid damage to the closures decorative finish. Where reforming is desired, corner 11 should also be filleted or curved so that the downward movement of the pressure block to reach the position shown in FIG. 5 does not mar the decorative finish of the closure.
  • a method of vacuumizing and sealing containers which comprises:

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vacuum Packaging (AREA)
US451709A 1965-04-29 1965-04-29 Apparatus for sealing containers Expired - Lifetime US3369340A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US451709A US3369340A (en) 1965-04-29 1965-04-29 Apparatus for sealing containers
JP41026710A JPS5019992B1 (enExample) 1965-04-29 1966-04-28

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US451709A US3369340A (en) 1965-04-29 1965-04-29 Apparatus for sealing containers

Publications (1)

Publication Number Publication Date
US3369340A true US3369340A (en) 1968-02-20

Family

ID=23793390

Family Applications (1)

Application Number Title Priority Date Filing Date
US451709A Expired - Lifetime US3369340A (en) 1965-04-29 1965-04-29 Apparatus for sealing containers

Country Status (2)

Country Link
US (1) US3369340A (enExample)
JP (1) JPS5019992B1 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3243058A1 (de) * 1982-05-31 1983-12-01 LLAMAS, S.A., Badalona, Barcelona Vorrichtung fuer einen vakuumverschluss von behaeltern

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63127023A (ja) * 1986-11-17 1988-05-30 Matsushita Electric Ind Co Ltd グリル付ガステ−ブル

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1244494A (en) * 1916-05-01 1917-10-30 American Metal Cap Co Chuck for jar-closures.
US1913177A (en) * 1931-07-24 1933-06-06 Bernardin Bottle Cap Co Device for sealing containers under vacuum
US2017766A (en) * 1928-10-10 1935-10-15 Anchor Cap & Closure Corp Sealing machine and method
US2198589A (en) * 1939-05-02 1940-04-30 Anchor Hocking Glass Corp Apparatus for sealing containers
US2337170A (en) * 1939-08-24 1943-12-21 Aluminum Co Of America Method and apparatus for sealing packages
US2472664A (en) * 1944-07-03 1949-06-07 Fmc Corp Apparatus for capping containers
US2578815A (en) * 1946-12-20 1951-12-18 Continental Can Co Apparatus for vacuumizing, gassing, and closing containers
US2995882A (en) * 1960-03-24 1961-08-15 Owens Illinois Glass Co Container closing apparatus
US3039247A (en) * 1959-12-16 1962-06-19 Aluminum Co Of America Method and means for applying closures to containers

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1244494A (en) * 1916-05-01 1917-10-30 American Metal Cap Co Chuck for jar-closures.
US2017766A (en) * 1928-10-10 1935-10-15 Anchor Cap & Closure Corp Sealing machine and method
US1913177A (en) * 1931-07-24 1933-06-06 Bernardin Bottle Cap Co Device for sealing containers under vacuum
US2198589A (en) * 1939-05-02 1940-04-30 Anchor Hocking Glass Corp Apparatus for sealing containers
US2337170A (en) * 1939-08-24 1943-12-21 Aluminum Co Of America Method and apparatus for sealing packages
US2472664A (en) * 1944-07-03 1949-06-07 Fmc Corp Apparatus for capping containers
US2578815A (en) * 1946-12-20 1951-12-18 Continental Can Co Apparatus for vacuumizing, gassing, and closing containers
US3039247A (en) * 1959-12-16 1962-06-19 Aluminum Co Of America Method and means for applying closures to containers
US2995882A (en) * 1960-03-24 1961-08-15 Owens Illinois Glass Co Container closing apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3243058A1 (de) * 1982-05-31 1983-12-01 LLAMAS, S.A., Badalona, Barcelona Vorrichtung fuer einen vakuumverschluss von behaeltern

Also Published As

Publication number Publication date
JPS5019992B1 (enExample) 1975-07-11

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