Splicing.

Usually in Europe a film splicer is called a film joiner. Its a technique which can be used to physically join together lengths of photographic film. Most of the time its used in film motion pictures, what it can do is add a scene in between two scenes to make one scene appear longer. There are three types of splicers all used for different purposes.

Tape splicers: Tape splicers join film using clear tape, they can work with all types of film like Mylar, acetate and polyester. The tape can be perforated or non-perforated. When using non-perforated tape the machine punches out the perf holes as it makes the splice. Non-perforated tapes are less expensive.

Cement splicers: With cement splicers, they join pieces of film together using glue. The film is melted with chemicals (welded) which forms an invisible permanent bond. Because of this, cement splicers are used with negative film in preparation for striking release prints. They can also be used to repair and restore release prints as well. Professional cement splicers have heating elements that allow the glue to set faster.

Ultrasonic Splicers: Ultrasonic splicers are used with Mylar and polyester based film stocks. They work by fusing two pieces of film together and they are electronic.