Improved Method of Pasting together Sheets or Layers of Paper and other Material, especially applicable for use in the Manufacture of Paper Collars, Fronts, and the like.
Year: 1899

page_text: Date of Application, 28th Sept., 1899
Complete Specification Left, 21st June, 1900-Accepted, 28th July,
1900
PROVISIONAL SPECIFICATION.
Improved Method of Pasting together Sheets or Layers of Paper and
other Material, especially applicable for use in the Manufacture of
Paper Collars, Fronts, and the like.
I, ERNST OESER,. of Dresdenerstrasse 79, Berlin, in the Empire of Germany,
Manufacturer, do hereby declare the nature of this invention to be as follows:-
In cases where sheets of paper or other material are required to be pasted
together to form a thicker material the sheets are usually cemented together by
means of boiled starch paste and then passed, for the purpose of drying, over
heated drums. In the process of drying, however, the material must, in order
to ensure a rapid drying, pass over a great number of drying drums; and even
then irregularities will be found owing to some parts drying more rapidly than
others. This may be explained by the fact that boiled starch paste cannot be
evenly applied in equally thin layers all over the material, owing to the uneven
consistency of the paste, and also owing to the quantity of water, which is
excessive in boiled starch paste.
To meet these drawbacks the present method is employed in which, instead
of boiled starch paste, starch is applied in its raw unboiled state to the sheets
or layers of paper or material which are to be secured together, and the adhesive
quality of the starch is obtained afterwards by passing the material thus treated
over heated drying drums or in contact with heated surfaces. Owing to the heat
of the drying surfaces the starch contained between the layers of material becomes
heated and is converted into an adhesive medium.
In this new process, as will be seen, the preliminary boiling of the starch is
avoided, which of course is an advantage as regards economy in fuel and work.
Then only little water need be evaporated, as the raw starch may be applied in
thin coats by means of very little water, when compared with that contained in
boiled starch paste. The cementing of the sheets proceeds much more evenly; and
finally the material retains its original colour and in case of white paper does not
lose its original whiteness, while, such paper when treated with boiled starch paste
turns greyish colour, especially when the boiled starch is of that colour. This is
of very great importance, especially in the manufacture of paper collars, fronts
and the like.
Other materials, besides papers may be cemented or pasted together according
to this method.
The starch can be applied in the form of starch milk in very thin layers, as
such starch milk is very fluid and it may also be applied by means of a spraying
device. The conversion of the raw material between the sheets into an adhesive
material is greatly assisted by the steam produced by passing the sheets over
heated drums, or in contact with heated surfaces, which steam directly affects
and operates upon the material for the purpose of rendering it adhesive.
Dated this 27th day of September 1899.

page_text: Improved Method of Pasting together Sheets or Layers of Paper and
other Material, especially applicable for use in the Manufacture of
Paper Collars, Fronts, and the like.
"
I, ERNST OESER, of Dresdenerstrasse 79, Berlin, in the Empire of Germany,
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:-
In cases where sheets of paper or other material are required to be pasted
together to form a thicker material the sheets are usually cemented together by
means of boiled starch paste and then passed, for the purpose of drying, over
heated drums. In the process of drying however, the material must, in order
to ensure a rapid drying, pass over a great number of drying drums; and even
then irregularities will be found owing to some parts drying more rapidly than
others. This may be explained by the fact that boiled starch paste cannot be
evenly applied in equally thin layers all over the material, owing to the uneven
consistency of the paste, and also owing to the quantity of water, which is
excessive in boiled starch paste.
To meet these drawbacks the present method is employed in which, instead
of boiled starch paste, starch is applied in its raw unboiled state to the sheets
or layers of paper or material which are to be secured together, and the adhesive
quality of the starch is obtained afterwards by passing the material thus treated
over heated drying drums, or in contact with heated surfaces. Owing to the heat.
of the drying surfaces the starch contained between the layers of material becomes
heated and is converted into an adhesive medium.
In this new process, as will be seen, the preliminary boiling of the starch is
avoided, which of course is an advantage as regards economy in fuel and work.
Then only little water need be evaporated, as the raw starch may be applied in
thin coats, being mixed with very little water, as compared with that con-
tained in boiled starch paste. The cementing of the sheets proceeds much more evenly
and finally the material retains its original colour and in case of white paper does not
loose its original whiteness, while, such paper when treated with boiled starch paste
turns a greyish colour, especially when the boiled starch is of that colour. This is
of very great importance, especially in the manufacture of paper collars, fronts
and the like.
Other materials, besides papers may be cemented or pasted together according
to this method.
The starch can be applied in the form of starch milk in very thin layers, as
such starch milk is very fluid and it may also be applied by means of a spraying
device. The conversion of the raw material between the sheets into an adhesive
material is greatly assisted by the steam produced by passing the sheets over
heated drums, or in contact with heated surfaces, which steam directly affects
and operates upon the material for the purpose of rendering it adhesive.
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
À method of cementing together sheets or layers of paper or other material

page_text: by means of starch paste, consisting in applying raw starch, mixed with water,
to the sheets which are to be cemented together, and afterwards applying heat
thereto substantially as described.
Doted this 291st dose of Tune 1000.
BOULT, WADE & KILBURN,
Agents for the Applicant.