US3661301A - Flexible tubes - Google Patents

Flexible tubes Download PDF

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Publication number
US3661301A
US3661301A US13111A US3661301DA US3661301A US 3661301 A US3661301 A US 3661301A US 13111 A US13111 A US 13111A US 3661301D A US3661301D A US 3661301DA US 3661301 A US3661301 A US 3661301A
Authority
US
United States
Prior art keywords
tube
container
section
tubes
conical
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
US13111A
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English (en)
Inventor
Roger Couland
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.)
Societe de Conditionnement en Aluminium SCAL GP SA
Original Assignee
Societe de Conditionnement en Aluminium SCAL GP SA
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 Societe de Conditionnement en Aluminium SCAL GP SA filed Critical Societe de Conditionnement en Aluminium SCAL GP SA
Application granted granted Critical
Publication of US3661301A publication Critical patent/US3661301A/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
    • B65D35/00—Pliable tubular containers adapted to be permanently or temporarily deformed to expel contents, e.g. collapsible tubes for toothpaste or other plastic or semi-liquid material; Holders therefor
    • B65D35/14—Pliable tubular containers adapted to be permanently or temporarily deformed to expel contents, e.g. collapsible tubes for toothpaste or other plastic or semi-liquid material; Holders therefor with linings or inserts
    • 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
    • B65D35/00—Pliable tubular containers adapted to be permanently or temporarily deformed to expel contents, e.g. collapsible tubes for toothpaste or other plastic or semi-liquid material; Holders therefor
    • B65D35/02—Body construction

Definitions

  • a flexible container comprising a flexible sidewall defining a h2 5il g 5;0 0 coniczil tube which is open atone end wherein the sidewall has It It d t
  • the present invention relates to flexible containers, and more particularly to a flexible conical container which can be stacked with a plurality of similar tubes one inside another.
  • Flexible metal tubes are well known for use in packaging as containers for toothpaste, foodstuffs and a wide variety of other materials. Such tubes are generally delivered for filling in the form of a cylindrical container which is open at the end opposite of the removable cap.
  • tubes of the type described present transportation and storage problems in that, because of their flexible nature, they are easily deformed or crushed.
  • One solution to these transportation and storage problems is to form the tubes so that the sidewalls have a cross section which is generally conical whereby the individual tubes can be stacked one inside another. It has been found that such stacks of flexible tubes are considerably less susceptible to deformation or crushing as compared to individual tubes forming the stack since the walls of the stacked tubes are substantially in surface contact each with the other whereby the sidewalls of adjacent tubes in the stack tend to reinforce each other.
  • flexible tubes having a generally conical shape are not completely satisfactory.
  • flexible tubes of the type described are usually closed after filling by mechanical means, such as by folding the open end of the tube whereby the resulting folded surface seals the open end.
  • mechanical means to close the filling end is frequently inadequate to provide a tight seal prior to use of the contents. Accordingly, it has been the practice to introduce a material which is compatible with the contents of the tube into the fold which closes the filling end.
  • the inner surface of the tubes are frequently coated with a thin annular coating of a sealant, such as liquid rubber or similar material, which operates, after drying of the coating to fill any voids which may be created in the fold to thereby provide a tight seal in the fold.
  • a sealant such as liquid rubber or similar material
  • the annular sealant layer is usually quite thin(e.g. having a thickness of the order of about 0.3 mm), it serves to prevent stacking of a plurality of tubes in which the tubes comprising the stack are substantially in surface contact whereby the reinforcing effect described above is not obtained.
  • the annular sealant layer prevents one tube from entering the end opening of an adjacent tube to the extent necessary to enable the walls to be in surface contact.
  • FIG. 1 is a sectional view of a flexible container embodying the features ofthe present invention.
  • FIG. 2 is a stack of flexible tubes of the type described in FIG. 1.
  • a flexible container comprising a flexible sidewall defining a conical tube which is open at one end whereby the open end is adapted to receive material for filling the tube and is adapted to receive the opposite of another tube when a plurality of tubes are stacked one inside another.
  • the sidewall defines a section at the end of the tube in which the tube has an expanded or increased diameter to thereby provide a section with the configuration of a truncated cone, the apical angle of which is substantially the same as the apical angle of the unexpanded tube.
  • the inner surface of the truncated cone section is provided with a thin layer of sealant material which serves to fill any voids which are created when the open end of the tube is closed, as by a fold, to thereby provide a tight seal.
  • the expanded diameter of the truncated cone section allows another tube to be inserted through the open end and penetrate the tube to a depth sufficient to permit the walls to be substantially in surface contact.
  • the difference between the diameter of the truncated cone section and the diameter of the tube at the same point if the diameter of the tube were not expanded is at least equal to, and preferably greater than twice the thickness of the sealant layer.
  • the diameter of the truncated cone section is expanded in an amount at least equal to twice the thickness of the sealant layer.
  • the height of the truncated cone section along its axis is at most equal to the height ofa cap element on the end of the tube opposite the open end.
  • FIG. 1 a flexible container embodying the features of the present invention.
  • the tube is defined by conical sidewall 1 and is provided with an opening 3 at one end thereof adapted to be used for filling the tube.
  • the opposite end of tube 1 is closed by means of a shoulder member 6 which carries a cap member 2 releasably engaged with shoulder member 6.
  • cap 2 is threadably engaged with shoulder member 6, although it will be understood that various other types of releasable engagement means may be employed in lieu of the threaded engagement illustrated.
  • the sidewalls of the tube at its open end define a truncated cone section 4 which is concentric with the unexpanded portion of the tube.
  • the apical angle of truncated cone section 4 is substantially the same as that of the truncated cone defining tube 1 whereby the walls of the expanded truncated cone section are substantially parallel with the walls of tube 1.
  • sealant layer 5 which operates to fill any voids created when open end 3 of the tube is closed. It will be understood by those skilled in the art that the sealant layer 5 may be applied to the tube as it is formed, or it may be applied thereafter.
  • the flexible container of the present invention is preferably formed of a flexible metal, such as aluminum, lead, etc., although it will be understood that various other flexible materials, such as flexible plastics or the like, may also be used.
  • the expanded truncated cone section of the tube at the open end may be provided by means of conventional equipment in which the sidewalls of a conical tube near the end thereof are expanded or increased in diameter to thereby provide the truncated cone section.
  • FIG. 2 illustrates a plurality of tubes 1, 10 and 20 of the type described in FIG. 1 which have been stacked one inside the other.
  • tube 10 is stacked inside tube 1
  • tube 20 is stacked inside tube 10.
  • the inside tubes preferably penetrate the tube within which they have been stacked to the extent that the cap member 17 of tube 10 abuts shoulder member 6 of tube 1 within which it is stacked.
  • the cap of tube 20 abuts the shoulder member of tube 10.
  • the height L of the truncated cone section is preferably equal to or less than the diameter P representing the height of the cap member as it is carried upon the shoulder member.
  • a flexible container comprising a side wall defining a conical tube, said tube being open at one end thereof and having a truncated conical section integral therewith, with the truncated conical section having a sealant layer on the inner surface and a diameter expanded beyond the normal wall of the conical tube whereby the smallest diameter of the conical section is larger than the largest diameter of the conical tube to enable another tube to penetrate the container to a depth at which the walls of the tubes are substantially in surface contact.
  • a container as defined in claim 1 which includes a shoulder member at the other end of said tube, and a cap member mounted on said shoulder member.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tubes (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Materials For Medical Uses (AREA)
  • Closures For Containers (AREA)
  • Stackable Containers (AREA)
US13111A 1969-03-03 1970-02-20 Flexible tubes Expired - Lifetime US3661301A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6905587A FR2036019A5 (fr) 1969-03-03 1969-03-03

Publications (1)

Publication Number Publication Date
US3661301A true US3661301A (en) 1972-05-09

Family

ID=9029884

Family Applications (1)

Application Number Title Priority Date Filing Date
US13111A Expired - Lifetime US3661301A (en) 1969-03-03 1970-02-20 Flexible tubes

Country Status (14)

Country Link
US (1) US3661301A (fr)
JP (1) JPS4820744B1 (fr)
BE (1) BE746732A (fr)
CA (1) CA1040162A (fr)
CH (1) CH505004A (fr)
DE (1) DE7007574U (fr)
DK (1) DK122168B (fr)
ES (1) ES156387Y (fr)
FR (1) FR2036019A5 (fr)
GB (1) GB1297202A (fr)
NL (1) NL7002915A (fr)
NO (1) NO128812B (fr)
SE (1) SE356482B (fr)
ZA (1) ZA701358B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4237939A (en) * 1978-03-10 1980-12-09 H. Obrist & Co. Ag Stackable tube body having a layer of sealant material
US5024354A (en) * 1981-07-20 1991-06-18 William Ledewitz Collapsible dispensing container

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2743998C2 (de) * 1977-09-30 1982-10-28 Hinterkopf, Kurt G., 7332 Eislingen Konischer Tubenrohling und Vorrichtung zum konischen Aufweiten eines Tubenrohlings
JPH04504043A (ja) * 1989-12-22 1992-07-16 イーストマン・コダック・カンパニー 画像データの高速圧縮

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2028112A (en) * 1931-09-04 1936-01-14 Stokes Machine Co Hermetic closure for collapsible tubes

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2028112A (en) * 1931-09-04 1936-01-14 Stokes Machine Co Hermetic closure for collapsible tubes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4237939A (en) * 1978-03-10 1980-12-09 H. Obrist & Co. Ag Stackable tube body having a layer of sealant material
US5024354A (en) * 1981-07-20 1991-06-18 William Ledewitz Collapsible dispensing container

Also Published As

Publication number Publication date
CH505004A (fr) 1971-03-31
FR2036019A5 (fr) 1970-12-24
JPS4820744B1 (fr) 1973-06-23
BE746732A (fr) 1970-09-02
GB1297202A (fr) 1972-11-22
DK122168B (da) 1972-01-31
DE2009692A1 (de) 1970-09-10
NL7002915A (fr) 1970-09-07
DE7007574U (de) 1973-09-06
ZA701358B (en) 1971-04-28
NO128812B (fr) 1974-01-14
CA1040162A (fr) 1978-10-10
SE356482B (fr) 1973-05-28
ES156387U (es) 1971-04-01
ES156387Y (es) 1971-10-16

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