Improvements in the Manufacture of Corrugated Paper.
Year: 1891

page_text: Date of Application, 14th Oct., 1891
Complete Specification Left, 14th July, 1892-Accepted, 8th Oct., 1892
PROVISIONAL SPECIFICATION.
Improvements in the Manufacture of Corrugated Paper.
I, STUART EDWARDS, of 31 Holywell Lane, Great Eastern Street, in the City
of London, Paper Manufacturer, do hereby declare the nature of this invention to
be as follows:-
Corrugated paper for packing and other purposes is at present made by
corrugating a sheet of finished paper and pasting it to a backing.
According to this invention I make the corrugated face from paper pulp and
the backing also from paper pulp or unfinished paper causing them to adhere
together in the course of manufacture.
I deliver the pulp to form the corrugated surface onto a roller having longitudinal
grooves in its surface which become filled with the pulp. This roller revolves in
contact with a sheet of half formed paper or paper pulp which is to form the
backing and the pressure causes the pulp in the grooves to adhere to this backing.
Afterward the backing with the corrugations upon it is passed between pressing
rolls and the material is finished in the usual way.
When made as above described the projections forming the corrugations are
Bolid but they may also be made hollow by causing the grooved roll to revolve in
contact with a roll having upon it projections corresponding to but of a smaller
size than the grooves so that the pulp in the grooves is made to assume the form
of a hollow arch and adheres in this form to the backing.
Dated this 14th day of October 1891.
COMPLETE SPECIFICATION.
Improvements in the Manufacture of Corrugated Paper.
I, STUART EDWARDS, of 31 Holywell Lane, Great Eastern Street, in the City
of London, Paper Manufacturer, do hereby declare the nature of this invention
and in what manner the same is to be performed to be particularly described and
ascertained in and by the following statement :-
Corrugated paper for packing and other purposes is at present made by
corrugating a sheet of finished paper and pasting it to a backing.
According to this invention make the corrugated face from paper pulp and
the backing from paper or pulp or unfinished paper causing them to adhere
together in the course of manufacture.
I deliver the pulp to form the corrugated surface onto a roller having longitudinal
grooves in its surface which become filled with the pulp. This roller revolves in
contact with a sheet of paper or pulp or unfinished paper which is to form the
backing and the pressure causes the pulp in the grooves to adhere to this backing.
Afterward the backing with the corrugations upon it is dried in the usual way.
When made as above described the projections forming the corrugations are
solid but they may also be made hollow by causing the grooved roll to revolve in
contact with a roll having upon it projections corresponding to but of a smaller
size than the grooves so that the pulp in the grooves is made to assume the form of
a hollow arch and adheres in this form to the backing.
In the drawings a b and c are three corrugated rolls, d is a smooth roll, e is a
drying cylinder heated by steam or otherwise, f is a guide roll and g is the roll of
finished paper.
A is a web of paper pulp in a moist state which passes between the rolls a and b

page_text: and is thereby corrugated. It is carried round on the roll 6 and passes between it
and the roll c. After the nip it is carried round on the roll c and between it and
the roll and is thereby pressed into contact with the web B of paper or pulp or
unfinished paper in such manner that the two adhere together and dried and finished
by passing over the roll e. Finally the finished paper is wound up on the roll g.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
The process of manufacturing corrugated paper consisting in delivering the
corrugations in the form of pulp onto a backing of paper or pulp or unfinished
paper.
Dated his 19th .
C T 1
1000
STUART EDWARDS.