Slider for zip fastener, especially for wet suits, comprises non elastic mantle secured to elastic core

摘要

The slider (1) comprises a mantle (2) made from substantially non-elastic material containing a core (3) made from elastic material, the mantle and core being secured together at two more spaced apart points (4). The distance between the fastening points on the core is less than that between the fastening points on the mantle. The core can be stretched between its two fastening points to the same length as the mantle.