Abstract: Aseptic constant flow valves to be used, for example, in the dairy industry should be readily washable and allow sterilization by means of conventional washing and sterilizing agents. A valve which fulfils these requirements comprises an operating chamber with inlet and outlet which is connected to the valve housing and therefore can be circulation-washed and sterilized together with the latter.

Abstract: A method and an arrangement is disclosed for the detection by photoelectric means of markings made on a printed, decorated material web. The markings comprise two groups of stroke markings, the markings of a first group being arranged to be sensed by a first photocell element, which, on sensing the first group markings causes the output of a second photocell element, which senses the stroke markings of a second group of making to be fed into a memory unit for continuous comparison with a stored value. In response to the comparison, a control signal is generated to control the performance of various operations on the web.

Abstract: A chamber for treatment of a moving material web with an air flow for purposes of drying the web, the chamber including an inlet and an outlet for the flow of air, an inlet and outlet for the material web and a baffle plate disposed over the air outlet at an angle in relation to the path of travel of the web through the chamber.

Abstract: The invention relates to a regulating arrangement in particular on packing machines for the feed of weblike packing material in register with decorations or folding indications, so-called crease lines, present on the web. In accordance with the invention the desired control is obtained by regulating the tension of the web with the help of a guide roller over which the web is passed. The speed of the guide roller is regulated so that a web tension required for a feed according to register is obtained.