The only safe and archive- proof film joint is the cemented splice. This connection meets the standards of cinetechnology:

DIN 15 540    DIN 15 653    DIN 15 853

All industrial standards recommend a wedge – shaped design of the joint. To achieve this form, the cutter requires an angled tool, machined to the highest standards of precision. Because the stability of the film splice depends on a perfectly clean and dust-free.
Surface of the joint, the wedge cut has to be immaculate. With a joint length of 1,05 millimeters, the finished splice has seven times the thickness of the film base,
providing maximum contact.