US2401784A

US2401784A - Collapsible tube

Info

Publication number: US2401784A
Application number: US471097A
Authority: US
Inventors: Zahara Walter
Original assignee: Individual
Current assignee: Individual
Priority date: 1943-01-02
Filing date: 1943-01-02
Publication date: 1946-06-11
Anticipated expiration: 1963-06-11

Description

June 11, 1946. w. zAHARA COLLAPSIBLE TUBE Filed Jan. 2, 1945 JNVENTOR. HZZZLe'r .Za/Zara,

Patented June Il, 1946 UNITED STATES PATENT `OFFICE 2,401,784 coLLArsmLE TUBE Walter Zahara, Chicago, Ill. Application Januar-ye, 194s, serial No. 471,097

The present invention relates to collapsible tubes for dispensing tooth paste, salves, creams, paste, etc., and has for its main object the provisionof a tube to be made out of oiled or im` pregnated paper, or suitable cellulosic material, and which may be suitably formed out o1 a single blank.

A still further object of the present invention is the provision of a tube of the character indicated in which marginal folds', which in the completed tube will form one of the Walls thereof, may retain therebetween metallic, or other suitable strip for the purpose of facilitating the rolling of the tube at one end thereof and for retaining the roll in position as the same is being made for the purpose of ejecting thec'ontents of the tube through the usual neck at the opposite end of the tube.

f It is a well known fact that fabric material, such as impregnated paper or cellulose has a tendency to assume its original position, and thus a tube made of such a material would have a tendency to unwind at its roll at one end of the tube,

-, therefore a further object of the present invention is to provide means whereby the roll when formed would maintain its shapewithout unwinding.

IA still further object of the present invention is the provision of a tube of the character indicated and which may be made out of a, single blank sheet, with suitable creases provided therein to facilitate folding of the blank, whereby the tube may assume polygonal formation on transverse cross section, with oneend of said vblank suitably slit to provide a plurality of flaps, which, when folded, may provide transverse end wall for the tube.

A still further object of the present invention is the provision of a tube of polygonal formation on cross section, to facilitate collapsibility of the tube and rolling of one end thereof to eject the contents of the tube.

2 Claims. (Cl. 222-107) fer to corresponding parts throughout the several views; i Fig. 1 is a side elevational view of the tube; Fig. -2 is a longitudinal cross sectional view of the tube on an enlarged scale, taken online 2-2 of Fig. 1, with neck and -neckretaining member in elevation;

Fig. 3 is an enlarged cross sectional view on line 3--3 oi' Fig. l;

Fig. 4 is an elevational discharge end view of the tube;

Fig. 5 is a perspective view, on a reduced scale, of the end wall retaining fixture with the neck integrally formed therewith; and

Fig. 6 is an elevational view 'of the blank, on a reduced scale, out of which the tube isvformed.

Referring in detail to the present drawing there is shown therein a rectangular blank Il, made out of impregnated paper, cellulose, or other cellulcsic material. A plurality of ylongitudinal creases II is madefin said blank III, to divide said blank longitudinally into a pair of marginal folds I2, four narrower strips I3, a, pair of which is disposed adjacent to each of the said marginal folds I2, and acentral strip Il interposed between the two pairs of strips I3. Strips I3 are of equal width, but are narrower than said marginal folds I2 and strip I4.

One end of said blank I0 is incised, as at I5, to

effect at the ends of folds I2, and strips I3 and Il, a, plurality of flaps I6. Said incisions I5 ex-l tend to the vdotted line I1 `along which said flaps I6, when bent, transversely and perpendicularly to their respective folds I2 and strips I3 and I4 will constitute the end wall I8-in the finished tube I9.

For the sake of clearness sections of the Wallin the completed tube are designated with 'the same corresponding characters as folds I2 and strips I3 and Il.

When the blank, shown in Fig. 6, has been prepared in accordance with the hereinabove description, the same ls bentv longitudinally and along creases II. A metallic strip 20, preferably of ductile or pliable character, is interposed between marginal folds I2, and thereupon said marginal folds are cemented to each other. Said strip 2II does not extend to wall I8 but terminates short thereof, but the opposite end thereof is coextensive with the opposite end of tube I9.

When the side wall of the tube has been formed as aforesaid, several flaps I6 are thereupon bent perpendicularly to the body portion of the tube, first preferably bending the narrower flaps I6, those extending from strips I3, thereupon bending the central flap I6, the one extending from strip I4, and thereupon bending the double flap I6 extending from the two overlapping marginal folds I2. All these flaps I6 are cemented to each other and pressed, so that in the finished tube they will constitute the end transverse Wall I8, which will present a solid, compact and homogeneous formation, unlike the loose and exaggerated condition thereof illustrated in Fig. 2, Thereupon in said wall I8 and centrally thereof a central aperture 2I is made throughwhich an externally threaded neck 22 extends for the purpose of receiving a usual cap. Said neck 22 is integrally formed with a polygonal plate 23, preferably made of suitable plastic material, which is positioned in contactual relation with the inner i From the hereinabove description it will be t seen that the tube, being of polygonal formation, will present a plurality of corners or angles made along creases II, which facilitate collapsibility of the tube, eliminating drag or distortion which usually occurs in cylindrical tubes.

` At the closed end of the tube the usual roll is made, the outermost edge of which is clamped within a U-shaped clasp 21. At that end of the tube wider wall sections I2 and III as Well as the two adjacent pairs of wall sections I3 are in contactual relation. The two opposed angles between the adjacent wall sections I3 completely close, and angles 25 between sections I2 and I4 and the adjacent sections I3completely open as i the wall of the tube is progressively wound in roll 26, as is indicated in Fig- 1, for the purpose, of ejecting the contents of the 'tube through bore 24.

Due to the pliable or'ductile nature of strip 20 roll 26, once made, will be retained in position, notwithstanding the tendency of fibrous material of the wall of the tube to assume its original formed position. Since the several sections of the walls of the tube, as well as strip 20, are

straight, and not arcuate as in cylindrical tubes, the formation of roll 26 will progress without any undue distortion or drag upon the wall of the tube. Likewise, due to the fact that the several sections of the wall of lthe tube are straight, the contents of the tube will n ot tend to be retained kwithin roll 26 as the same is progressively made,`

as oftentimes occursin cylindrical tubes.

It is further observed that in view of the fact that plate 23 is polygonal and by its margin in a frictional contactual relation with the side wall of the tube, the same will not be displaced when cap is placed upon or removed from neck 22, and therefore need not be anchored in any manner to the body of the tube.

While there is described herein a preferred embodiment of the present invention, it is nevertheless to be understood that minor changes may be made therein without departing from the spirit and scope of the invention as claimed.

What I claim as new is:

1. A flexible container, adapted to be rolled to atten the same and thereby dispense its contents, and comprising an elongated sheetv of cellulose material folded to form a body of general hexagonal form in cross section and having a top wall, two opposed side wall sections of the body being wider than the remaining four side wall sections thereof and one of them consisting of similar members on opposite edges of the sheet overlapped substantially throughout the width of said members and adhesively secured together, a pliable metallic strip disposed and secured centrally of and between said overlapped members and extending longitudinally of the body from a point near the top wall to the lower end of the body, the lower end portion of the body being gradually flattened in ared form and having its lower extremity secured in completely flattened and folded condition to form a roll being disposed parallel with the lower end of the body, said' roll being disposed parallel with the wider side wall sections of the body, and a discharge neck secured to the top wall.

2. A flexible container, adapted to be rolled to flatten the same and thereby dispense its contents, and comprising an elongated sheet of rcellulose material folded to form a body of general hexagonal form in cross section and having a flat top Wall provided with a central opening, two yopposed side wail sections of the bodybeing wider than the remaining four side wall sections thereof and one of them consistingof similar members on opposite edges of the sheet overlapped substantially throughout the width of said members and adhesively secured together along one side of the body, a pliable metallic strip disposed and secured centrally of and between said overlapped members and extending longitudinally of the body from a point near the top wall to the lower end of the body, the lower end portion of the body being gradually attened in flared form and having its lower extremity'secured in completely flattened and folded conditionfto form a roll being disposed parallel with the lower end of the