US1941697A - Transfer - Google Patents

Description

Patented Jan'- 2, 1934 UNITED STATES PATENT OFFICE,

ramsraa No Drawing. Application March 16, 1931 x Serial No. 523,202

'IClaims.

My invention relates to a new and improved transfer.

One of the objects of my invention is to provide a dry transfer of the type which is printed upon a sheet, of paper and which is released from the paper base by means of heat and pressure. Transfers of this type are applied to the fabric or the like which is to be marked and the back of the transfer is then pressed with a hot iron, so that the transfer marking is melted and is taken up by the fabric or other material which is to be markedor decorated.

Another object of my invention is to provide a transfer which will produce a very brilliant mark in a light color on a dark background.

Another object of my invention is to provide a transfer which shall utilize the material commercially known as Amberol. This AmberoP' is a phenol formaldehyde condensation resin which is caused to condense in' the presence of an added resin, such as rosin.

'This material Amberol is also referred to in the trade by the names Albertol and Albertole. These products are identified in the textbook entitled Synthetic ResinsandTheir Plasin molten form. The improved composition also contains a solvent which is volatile but 'which has a high boiling point, when the transfer base is printed. This causes the transfer to rapidly age so that after the' transfer base has been 40 printed the transfer does not smear on the paper base after a few days,.even though the composition includes an opaque pigment in a relatively high proportion.

Other objects of my invention will be set forth in the following description which illustrates a preferred embodiment thereof, it being understood that the above general statement of my invention is intended'to' generally explain the same and not to limit it in any manner.

Although I do not wish to be limited to the specific ingredients and proportions mentioned, I prefer to use the following formula, the proportions being by weight:

150 parts of Amberol (type F7) 84 parts of carnauba wax 32 parts of ozokerite 35 parts of No. 6 litho varnish parts of blown castor oil 1 part of cobalt drier 10 parts of butyl carbitol 215 parts of cadmium selenide In order to prepare this composition for printing on the transfer base, the fusible elements are first melted and intermixed and the oils are then added, and the mass is thoroughly intennixed. The butyl carbitol is diethylene glycol mono butyl ether and it has'a boiling point of 220 C.

The temperature of the mixture is then lowered almost to the hardening point and the butyl carbitol is then added and the mass is again thoroughly mixed.

The cadmium selenide, which is the pigment utilized in the above mentioned formula, is then added with thorough mixing.

The artificial resin above specified furnishes a base for the vehicle which is not easily fusible, and the addition of the carnauba wax and the ozokerite renders the composition more fusible. The addition of the oils increases the fusibllity so of the composition so that it has a melting point between C.-120 C. v

The No. 6 litho varnish slowly oxidizes so that the transfer marking hardens or sets upon the base of the transferand this setting action increases with the age of the transfer while allowing the composition to be used for printing purposes when the composition is fused. The cobalt drier accelerates this ageing action. The

butyl carbitol reduces the melting point of the 90.-

composition and it disappears in a fewdays after the transfer marking is printed upon the paper base so as to increase the rapidity of the ageing action. Due to the relatively high boiling point of the butyl carbitol, said solvent is not completely driven oi! during the preparation of the mixture. However, said solvent evaporates within a few days after the transfer marking has been printed, as previously stated.

These transfers are ordinarily supplied to the a transfer of this type.

consumer with the paper base wound into the form of a spiral form and rapid ageing is desirable in order to prevent the transfer markings from smearing.

The cadmium selenide has never been previously employed in transfers and the use thereof is particularly advantageous because it is. an opaque pigment which is very fine and very smooth. This pigment is very useful in producing a brilliant red marking on black hosiery. If a white marking is desired, titanium oxide can be used and if a yellow marking is desired, cadmium sulphide can be used.

Cadmium selenide has remarkable resistance to heat and it does not lose its brilliancy if it is overheated, so that it is especially suited for It can therefore be employed in the above mentioned formula in a very large proportion and to secure a very intense color. Another advantage of using cadmium selenide is that it has low oil absorption.

The above formula can be varied. For example, if greater penetration of the marking is desired, more wax can be used and if less fusibility is desired, less wax can be used.

Other ingredients may be added to increase the fusibility of the composition, such as ethyl abietate.

In compositions of this type heretofore utilized, the proportion of the pigment was from six ounces to eight ounces per pound of the compo sition. In the above mentioned formula, it will be noted that each pound of the composition has about thirteen ounces of the pigment.

This composition is printed upon the paper base by any suitable method while the composition is in the fused condition. The composition then rapirfly ages so that the transfer can be promptly shipped.

The butyl carbitol has special properties in a composition of this type. It has a relatively high boiling point so that it does not escape when the composition is fused in order to print the marking upon the paper base. Nevertheless, the butyl carbitol is suinciently volatile to escape quite rapidly from the printed marking upon thep'ap'er base so that in a few days after printing, the marking becomes less fusible and the ageing action is thus accelerated.

I have shown a preferred embodiment of my invention, but it is clear that numerous changes and omissions can be made without departing from its spirit.

I claim:

1. A heat transfer comprising a paper base having a marking which includes fusible material and cadmium selenide.

2. A heat transfer comprising a paper base having a marking which includes fusible material and cadmium selenide,'the cadmium selenide being not less than 50% of the marking composition.

3. A heat transfer comprising a paper ba'se having a marking which includes cadmium selenide, a resin and an oil.

'4. A heat transfer comprising a paper base having a marking which includes cadmium selenide, a resin and a thickened oil.

5. A-heat transfer comprising a paper base having a marking which includes a condensation resin in the'presence of rosin, a glycerol ester of rosin, a wax, an oil, and cadmium seienide.

6. A method of making a heat transfer which consists in printing upon a paper base a marking which comprises molten fusible material and a pigment and a relatively volatile fiuid which does not substantially volatilize when the composition is melted and whose boiling point is above 200 (3., and then allowing thevolatile fluid to escape 11g from the printed marking which is formed upon said paper base.

7. A heat transfer comprising a paper base having a marking, said marking comprising a resin which has a relatively high melting point, 5 additional fusible material having a lower melt- .ing point than said resin, an .oil, and cadmium