AN IMPROVED MATERIAL SUITABLE FOR THE MANUFACTURE OF LINED COFFEE AND SUGAR BAGS AND FOR OTHER PURPOSES
Year: 1884

page_text: I THOMAS BRIGGS of Manchester in the County of Lancaster Manufacturer, do
hereby declare the nature of my invention for "AN IMPROVED MATERIAL SUITABLE
FOR THE MANUFACTURE OF LINED COFFEE AND SUGAR BAGS AND FOR OTHER
PURPOSES," and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
Lined coffee and sugar bags are now chiefly made of a compound material
consisting of a combination of paper and a woven material made from jute or other
similar fibrous substance with a layer or coating of waterproof adhesive composition
between them, the paper being turned towards the inner side of the bag.
In the course of time and in consequence of rough usage, the paper lining is
liable to become broken and pieces of the paper (as well as the adhesive material
and the jute fibres.) become detached and mix with the sugar coffee or other goods
in the bag.
My invention is intended to remedy this defect and consists principally in
substituting a material known as "Union." for the paper hitherto employed.
This "Union" is formed of a loosely woven cotton fabric filled with paper pulp,
the pulp being confined as much as possible to one side of the fabric and in making
the compound material for the manufacture of bags according to my invention the
adhesive material is applied to the pulpy or paper side of the "Union," which is
then combined by pressure with the woven jute or other fabric.
By these means I produce a compound material for the manufacture of bags
having an exterior of woven jute or other fabric and a clean white interior surface
without any loose fibres and which will not break and from which no paper or
other material can be detached so as to become mixed with the sugar.
I would here observe that it will be evident that this same compound material
can be employed for other purposes.
I use (by preference) vegetable pitch for the purpose of fixing the "Union," to
the external woven fabric, as it is not only waterproof but also vermin repellant,
but any other suitable adhesive substance may be employed for this purpose.
In applying my invention to the manufacture of bags from jute or other fabric
woven in a tubular or seamless form, I coat the Union lining with the adhesive

page_text: "
material and apply it to both outsides of the woven tube forming a lap joint at
each edge; and I afterwards turn the same inside outwards, so that the "Union
forms the lining of the bag. This could not be done with paper only without
breaking the same.
Having now particularly described and ascertained the nature of my said.
invention and in what manner the same is to be performed I declare that what
I claim is, the improved compound material for the manufacture of lined coffee and
sugar bags and for other purposes by the combination (by means of a suitable
adhesive water-proof substance or composition) of woven jute or other similar
fibrous substance with the material above referred to and known as " Union'
substantially in the manner and for the purposes hereinbefore set forth.
·
Dated the 15th day of February 1884.
"
GEORGE DAVIES,
Agent for the Applicant.