Business screen magazine (1946)

John, why take a 50-50 chance with your produaion? Why not depend upon Cineffects' 15 years of dependable service— service proven through hundreds of satisfied customers. Remember, for art, animation, opticals and photography, in 16 and 35mm, call . . . a 6-093 1 cineffects, inc. 115 W. 45th ST., NEW YORK, N. Y. Ask jor our brorhure showing hotv Cineffect's specialized facilities can benefit your production. Du Pont Plans Production Unit for New Photographic Film Base ♦ A coniniiTLial unit for the manufacture of a new, synthetic base for motion picture film will be built at Du Pont's Parlin, New Jersey photo products plant according to a recent announcement by E. 1. DU PONT DE NeMOUKS and COMPANy. The announcement said extensive tests have shown the new base, chemically identified as a polyester, to be several times stronger and have much greater diinensional stability than any of the present types of safety film base, while retaining comparable flame resistance. An important added advantage is a reduction of film thickness, said to uiake possible up to 35% more footage per reel. Polyester film is also said to have higher clarity than conventional film bases, and appears to have better storage and aging characteristics. Tests Indicate Strength In comparing the new base with cellulose nitrate and cellulose acetate films, Du Pont said polyester has twice the tensile and tear strength, and can be stretched twice as far without breaking. It is supposed to be virtually unaffected by immersion in water or changes in humidity. In a test of folding endurance the new base withstood 17.000 flexings while an ordinary film failed after 100. It showed practically no signs of wear after 3,900 runs through a projector after perforations on standard films wore out in 1.400 projections. Seven years of research and an investment of $3 million have already gone into the development of the new film base. Several hundred thousand feet have been produced at the company's Parlin Research Laboratory for testing and evaluation. Construction of the full-scale unit will start in the near future and initial production is forecast for the middle of 1955. Until then the pilot plant will remain in operation to continue supplying operating information and to produce material for trade evaluation and market development. New Victor Gasket Film Will Tell Product and Merchandising Story ♦ A new Victor Gasket Company film, produced by Reid H. Ray FiLM Industries, Inc., describes how gaskets and oil seals are made and shows the merchandising aids offered by the sponsor. It will be shown to Victor Gasket jobbers the world over. The 27-minute motion picture was filmed in approximately three weeks in the various Victor plants in the Chicago area. Reeves Soundcraft Announces New Micro-Polishing Process ♦ Reeves Soundcraft Corporation has announced that a newly developed and patented "MicroPolishing" process is now being used in the manufacture of its complete line of magnetic recording tapes. The announcement said the process was developed to materially reduce magnetic drop-outs in magnetic film recording for Hollywood and in highly critical tapes for Telemetering and other calculating applications. Before the development of this process, according to Reeves, microscopic protuberances (oxide nodules) inherent in all oxide coatings often caused an interruption of the recorded signal. Previous efforts to eliminate tliese had failed and as a result the margin of error in calculating tapes remained high. The Micro-Polishing process is said to develop high mechanical stresses on these coating nodules and the surface of the tape, resulting in "a mirror-smooth finish thus practically eliminating drop-outs and increasing the accuracy of magnetic calculating systems." Maintains Surface Uniformity Further research revealed that on all standard magnetic recording tapes surface imperfections caused a steady increase in high frequency output level of the tape through the first 10 or 12 playings. This prevented new tapes from being interspliced with older ones, but recording engineers solved the problem by running new tapes through the record and playback heads numerous times until a stable output level was attained. By applying the Micro-Polishing process to its magnetic recording tape. Reeves Soundcraft said surface uniformity and a stable high output level is achieved right from tlie first playing. The development of high speed Micro-Polishing equipment is credited with enabling the manufacturer to apply the process to its complete line of magnetic recording tapes with no increase in price schedules. STOCK FOOTAGE Washington and Walla-Walla; Singapore. Saigon and Seoul. Order any city or landmark among 15,000 subjects completely cross-indexed. Send for Catalogue E. ]^ ]3 C FILM LIBRARY 105 E. 106 Si.. Aimnri 24 BUSINESS SCREEN M.\G.AZINE