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In contrast to Direct-to-garment (DTG) printing, in which designs are printed directly onto the garments, DTF employs a two-step process. [citation needed] The first step in the Direct-to-film (DTF) printing method involves initially printing the design onto a PET (Polyethylene Terephthalate) film and then applying an adhesive powder to the printed film.
A similar printing method: Direct-To-Film printing (DTF printing) can also make the digital textile printing. The difference from DTG printing is that DTF printing first prints on a special transfer film while DTG printing prints on the substrate. One of the advantage of DTF printing is that it is more cost effective.
The third chart in each set was supplemented by Gröber in 1961, and this particular one shows the dimensionless heat transferred from the wall as a function of a dimensionless time variable. The vertical axis is a plot of Q/Q o, the ratio of actual heat transfer to the amount of total possible heat transfer before T = T ∞.
The overall heat transfer coefficient is a measure of the overall ability of a series of conductive and convective barriers to transfer heat. It is commonly applied to the calculation of heat transfer in heat exchangers , but can be applied equally well to other problems.
The heat distortion temperature is determined by the following test procedure outlined in ASTM D648. The test specimen is loaded in three-point bending in the edgewise direction. The outer fiber stress used for testing is either 0.455 MPa or 1.82 MPa, and the temperature is increased at 2 °C/min until the specimen deflects 0.25 mm.
Thermal-transfer printing is done by melting wax within the print heads of a specialized printer. The thermal-transfer print process utilises three main components: a non-movable print head, a carbon ribbon (the ink) and a substrate to be printed, which would typically be paper, synthetics, card or textile materials.
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