Improvements relating to the Fixation of Pigments cr Metallic Powders in Printing on Textile Fabrics or similar Surfaces.
Year: 1897

page_text: Date of Application, 9th Mar.,
1897
Complete Specification Left, 8th Dec., 1897-Accepted, 8th Jan., 1898
Improvements relating to the Fixation of Pigments cr Metallic
Powders in Printing on Textile Fabrics or similar Surfaces.
We, WILLIAM EDWARD KAY, of Thornliebank, near Glasgow, Chemist, and The
THORNLIEBANK COMPANY LIMITED, of 4 West Regent Street Glasgow, do hereby
declare the nature of this invention to be as follows:-
The object of the invention is to fix pigments or metallic powders, in printing
on calicoes or other textile fabrics or similar surfaces, by a process to be herein-
after described.
This process is based upon the well known property possessed by formic alde-
hyde (the solution of which is technically termed " 'formalin"), of rendering
gelatine insoluble.
To utilize this property for the object aforesaid, and to accomplish our improve-
ments, we mix the pigments or metallic powder intended to be used for printing
purposes with a suitable thickening containing the dissolved gelatine.
This mixture is then applied to the printing rollers, and the fabric or surface is
printed in the usual manner.
This printed fabric is then subjected to the action of the formic aldehyde which
renders the gelatine insoluble, and, thereby, at the same time, causes the pigment
or metallic powder to be permanently fixed.
Although we prefer to employ gelatine, as probably being the best material
for the process hereinbefore described, we may, in some cases, use, either in lieu
thereof, or in conjunction therewith, other bodies, which are known to be similarly
acted upon by formic aldehyde.
The improvements may also be employed in conjunction with the well known
method of producing crinkled or crépon effects, by means of the action of caustic
alkali upon the fibres of the fabric so treated, the insoluble gelatine in such case
acting as a resist to such caustic alkali; and other variations in detail may be made
without departing from the peculiar character of the invention.
Dated this 8th day of March 1897.
WILLIAM GADD, C.E.,
64 Barton Arcade, Manchester, Agent.
Improvements relating to the Fixation of Pigments or Metallic
Powders in Printing on Textile Fabrics or similar surfaces.
We, WILLIAM EDWARD KAY, of Thornliebank, near Glasgow, Chemist, and The
THORNLIEBANK COMPANY LIMITED, of 4 West Regent Street, Glasgow, do hereby :
declare the nature of this invention and in what manner the same is to be per-
Dine R71

page_text: The fixation of this colour may be accomplished by the method already described
as applicable to the pigment colour.
Although we prefer to employ gelatine, as probably being the best material for
the process herein before described, we may, in some cases, use, either in lieu
thereof or in conjunction therewith, other bodies which are known to be similarly
acted upon by formic aldehyde, such, for instance, as ordinary glue, albumen,
caseine preparations, and the like.
The improvements may also be employed in conjunction with the well known
method of producing crinkled or crépon effects, by means of the mercerising action
of caustic alkali upon the fibres of the fabric so treated, the insoluble gelatine in
such case acting as a resist to such caustic alkali; and the improvements may also
be used in conjunction with the known method of obtaining silk like or lustre
effects by the like mercerising process, the fabric in this case being under tension
to prevent contraction, and a suitable resist to the silking effect (such as the pre-
pared zinc white colour herein described) being used for the purpose; and other
variations in detail may be made without departing from the peculiar character
of the invention.
Having now particularly described and ascertained the nature of our said in-
vention, and in what manner the same is to be performed, we declare that what
we claim is :-
In printing calicoes or other textile fabrics or similar surfaces, the process of
subjecting to the action of formic aldehyde substances which are rendered
insoluble thereby, for the purpose of fixing pigments or metallic powders printed
upon such fabrics or surfaces and in manner substantially as herein set forth.
Dated this 7th day of December 1897
WILLIAM GADD, C.E.,
64, Barton Arcade, Manchester, Agent for Applicant.