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US 4,056,352 AGranted
Dry transfer of organic compounds to webs
AssigneeCiba-Geigy Corporation
InventorFritz Mayer
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AssigneeCiba-Geigy Corporation
InventorFritz Mayer
Estimating the term…
The invention provides a process for the continuous, dry transfer of organic compounds, in particular of finishing and improving agents, to webs of air-permeable organic materials, preferably to textile webs of polyester, polyamide, polyacyclonitrile and/or cellulose by passing the webs and organic compound carriers over a heating means and subsequently over a suction means with the heating being from the carrier side and suction from the web side.
A process for the continuous, dry transfer of an organic compound to a web of air-permeable organic textile material, comprising, the steps of
An apparatus for carrying out a continuous, dry transfer of an organic compound to a web of air-permeable organic textile material, which comprises
Dependencies are inferred from the claim text.
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Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form: transfer printing
By sublimation or volatilisation of pre-printed design , e.g. sublistatic: characterised by the mechanisms or artifacts to obtain the transfer,…
Treatment of selected parts of textile materials, e.g. partial dyeing: transfer-treating
Dyeing or printing textiles
Term ended 1 Nov 1994 (estimated)
USPTO file history isn’t available for this patent, so only indexed dates are shown.
The process comprises the following steps:
1. Applying to a carrier such as polytetrafluoroethylene or polyester sheet or glass cloth preparations which contain one or several compounds e.g. textile finishing agents that are converted into the vapour state at atmospheric pressure and at a temperature above 80.degree. C, preferably 100.degree. to 220.degree. C optionally a binder which is stable below 250.degree. C and/or a solvent, and, optionally, drying said preparations,
2. BRINGING SAID CARRIER INTO CONTACT WITH THE SIDE OF THE AIR-PERMEABLE WEB OF ORGANIC MATERIAL TO BE TREATED IN SUCH A MANNER THAT WEB AND CARRIER ADVANCE TOGETHER SYNCHRONOUSLY, THE ONE SUPERIMPOSED ON THE OTHER,
In the following Examples which illustrate the invention, the percentages are by weight.
Dimethyl methylhydrogen polysiloxane (viscosity 20-40 cst at 25.degree. C) is applied with a slop pad roller to an endless carrier of glass cloth (7 g/m.sup.2).
The side to be treated of the carrier advancing at a speed of 20 m/min. is brought into contact with the web of polyester/cotton (50:50) poplin (140 g/m.sup.2), which has previously been sprayed with 0.2% of ZrOCl.sub.2 (catalyst) and which advances at the same speed as the carrier, in such a manner that carrier and web of material are together transported synchronously with the one superimposed the other. Carrier and web of material are then fed into an apparatus as described in FIG. II. The 1st., 2nd, and 5th. cylinders (cf. 19, 21 and 23 in FIG. II) are heating cylinders of 90 cm diameter and with a temperature of 190.degree. C. The 2nd. and 4th. cylinder (cf. 20 and 22 in FIG. II) are suction cylinders of the same diameter.