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Патент USA US2119926

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June 7," -1938.
L Filed Feb. -l,
1937 '
1V @zdf/7er’ for;
Patented June 7, 1938
>Heinrich Quittner, Vienna, Austria, assigner to »
the firm Löwit & Comp., Vienna, Austria
Application February 1, 1937, Serial No. 123,498 '
In Austria February 21, 1936
1 claim. (Cl. 93-394)
fitting; Fig. 4 shows in section the .completed
end structure of a collapsible tube produced ac-~
cording to the invention.
Tubes in accordance with the invention may
the majority of purposes on account of their conveniently
be manufactured by rolling or wind- 5
5 poor resistance to mechanical and chemical
strains, and are therefore precluded lfrom mostV ing adhesive-covered paper to form aftube, in
such av manner that the wall thickness of the
uses. In accordance with the present inven
resulting tube is at least twice the thickness of
tion, however, tubes of this type can be rene the paper used. The tube can then be relied
dered suitable for all purposes by providing
This invention relates to collapsible tube con
tainers made from paper. Tubes of this de
scription made from paper are not suitable for
10 them on the inside with a ñlm-like coating of
elastic yielding material, suchas rubber or the
like. A nlm vof the required nature is preferably
produced by the coagulation of latex in a nat
ural, dilute, concentrated, preserved, or vulcan
l5 ized condition. In lthis manner it proves pos
sible> to render the tube jacket ñt to withstand
all the strains to which it is subjected in use
(drawing, squeezing, rolling, folding,I and the
like) without becoming injured.
By the provision of a ñlm-like lining the tube
on not to burst even when the pressure setup 10
by squeezing is relatively great. A paper tube
l (Fig. l) of this description stuck together with
latex or the like, which may be manufactured
in any desired lengths and cut up into pieces
of the length required to form a collapsible tube 15
container, is then upset at one end (for instance
on a mandrel), and on the upset marginal por
tion ‘2 discs 3 and li (Fig. 2) are then placed on
the insidel and on the outside, the disk lying
outermost in the ñnished tube being made pref- 20
erably of metal foil. The best method to adopt
wall is also rendered highly resistant to chemi- '
cal attacks of all kinds, since rubber or the like is to ñrst apply the inner disc 3 to the mandrel,
is not attacked by the substances normally » then to fit the paper tube thereo'ver, and ñnally
packed in collapsible tube containers, such as to apply the outer disc d, after which the in
25 aqueous emulsions, acids, alkalies, soaps, and the turned portion of the tube is united to the two 25
like. 'A film-like lining of the kind provided> by discs by ’means of an adhesive, preferably latex,
under the application of pressure and heat. I_n
the present invention also has the elïect of com
pletely sealing up all joints and crevices which to the tubular piece thus produced there is then .L
inserted a. disc-shaped member 5 of composition
result inevitably from the process of manufac
_30 turing the tube, and the contents of the tube are
consequently saved from theaccess of air and
from becoming dry.
If desired, the tube may also be given an out
side coating of moisture-repelling character, for
35 example a coatingV of varnish or the like, or
» enamel paint, and in this manlner rendered
proof against attacks of outside i'nñuences.
The paper tubes envisaged by- the present in
vention may be manufactured by methods known
40 per se, it being preferable in accordance with
the invention to employ, as adhesive for the pa
per in such manufacturing, yielding and elastic
material such as rubber solutions, rubber' emul
I sions, rubber dispersions, or the like, and pref
45 ,erably latex or the like. In this manner the
Jstuck joints and seams are rendered elastic and
less liable to become damaged or leaky, as com-7
pared with`the stiifness of the stuck surfaces and
seams when glue, paste, or the like is used as
50 adhesive for the described purpose.
~ In the drawing, Fig. 1 shows a cross- section
of a tube stock which may be used in carrying
out the invention; Fig. 2 illustrates a partially
formed end closure in section; Fig. 3 shows in
55 elevation a suitable closure cap and its threaded
(for instance bakelite or the like) or metal com- 30
prising the screw threading for the -closure cap >
1, in such a manner that the threaded exten
sion 6 of this member 5 projects out of the tube
(Fig. 4). The tubel thus formed, which is open
at the one end, is then provided with a nlm-like 35
lining of latex or the like, for instance by pour- . ~
ing elastic yielding material, preferably latex
or the like, through the tube after rendering
the latter open at both ends by removal of the
screw cap, with the result that a film 8 (Fig. 4) 40
becomes formed on the inside of the tube Wall,
thus completely sealing the inside of the tube
and all the joints therein.
A ñlm such as the ñlm 8 produced in the
described manner clearly diü'ers from an ordi- y45
nary impregnation in that it does also admit of
detachment from the paper wall of the tube,
whereas the usual impregnating agents such as
parañln, linseed oil, and the like penetrate into
the paper libres. Like a rubber tube, this ñlm 50
-can be subjected to very considerable strains
without becoming injured, and is also-resistant
to chemical attacks to which rubber is by its
nature proof. By its ability to follow every
movement the ñlm also forms an elastic rein- 55
n forcement of the tube and enhances its softness
I claim:
' and suppleness.
A 'process' for the manufacturing of a. col
The open end of the tube may be closed in
the known manner by folding or the like.
The ñnished tube may also be Waterproofed
on the outside by the application of a suitable
Tubes manufactured ir. the described manner
not -only provide a fully equivalent substitute
10 for metal collapsible tube containers, butmay
also be used- in cases'in which metal tubes may
lapsible tube consisting 1' of forming a vtubular
body of paper, reducing the diameter of the body
at one end, applying reinforcing members to 5
the inner and outer surfaces of the reduced por
tion of the body, fixing an outlet element to
the reinforced end of the body and applying a
coating on the inner surface oi’ the body in
the form of a film-like lining of an elastically 10
not be used on'account of their chemical and
yielding material capable of being subjected to
chemical and mechanical strains independently
other properties.
of the paper body.
The use of paper instead of the commonly
15 used metals, such as more particularly tin, also
enables the manufacturing of the tubes to be
very‘considerably cheapened.
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