摘要:
Substantially spherical granules of phenacetin are prepared by spraying liquid phenacetin which has been melted without decomposition by means of rapid passage through a melting device in which superheating is minimized. The resultant melt-sprayed granules are superior to crystalline phenacetin in the formulation of pharmaceutical tablets.
摘要:
The invention relates to a method and device for erecting (flat) blanks (12) for cartons, collapsible boxes, trays (11) or the like. Said blanks (12) are moved before an aperture (16) of a forming shaft (17) and introduced therein with a forming punch (20, 22), which in particular can be raised and lowered, with parts of the blank (12) being erected, in particular those in the region of side walls (15) and longitudinal walls and/or transverse walls of the carton or the like. According to the invention, after a blank (12) has been pushed into the forming shaft (17), the forming punch (20, 22) is moved at least partially outside of the forming shaft (17) to a position in front of the aperture (16) of the forming shaft (17). It is preferably provided that the forming shaft (17) is assigned at least two forming punches (20, 22), which are moved respectively in succession to press a (separate) blank (12) into the forming shaft (17). The forming punches (20, 22) are pivoted out of the forming shaft (17). The forming punches (20, 22) are preferably pivoted out of the forming shaft (17) in a direction opposite to the direction in which the blanks (12) are pressed into the forming shaft (17).
摘要:
An apparatus for melt-spraying thermally sensitive material of low viscosity comprises a heatable multi-screw extruder having intermeshing, self-cleaning screws of specified clearance between the screws and between the screws and the extruder housing, a heatable pump for delivering molten material from the extruder to a heatable atomizer and a spray tank in which the atomizer is located for cooling and solidifying the melt-sprayed material.