1985/01/01 by J. Ullrich, Ullrich, Joachim
Engineering · #660 #Engineering and Materials Science Studies #Mechanical and Thermal Properties Analysis #Physics and Engineering Research Articles
paper · doi:10.34657/14389
openalex publication_date 1985/01/01 · openalex created_date 2016/08/23 · openalex updated_date 2026/07/01
Technical details and initial operating experience with the RIS machine are reported, the first four station machine having run since February 1984. Almost all the drives of the machine are controhed hydraulically. Servo control is used to give precise control of accelerations and retardations. Other notable features include infra-red cameras for control of the axial cooling of the parison moulds, arrangements for interception of the parison and uncoupling of parison formation when defects occur and automatic doping. The introduction of hydraulic controls and improvements in the cooling system have allowed the energy consumption to be reduced considerably. When compared with an eight station double gob machine an increase, depending on weight of 10 to 50 % in machine speed has been achieved. By doubling the reheat and contact times the thermal bottle neck in the blow mould has been eliminated and the overall speed of the process determined by the parison mould. Nineteen different articles of capacity from 0,2 to 1,0 litre have been made and a total of 18 million containers produced and delivered. Use of the RIS machine allows up to 50 % greater production than given by current IS machines because of a weight saving of from 20 to 40 %. The energy saving depends on the particular container but is around 30 %. The noise level of 90 dB(A) is 15 dB(A) lower than with current IS machines. For about 2 % higher production on RIS 8 DT machine give from 8 to 20 % lower production cost than an IS 10 DT.