ANCHORAGE CARTRIDGE FOR FIXING ANCHOR BOLT CONTAINING MEMBER FOR RIGIDIFYING INSIDE

摘要

A cartridge contg. a sealing compsn. for anchoring bolts or pins comprises an internal tubular part contg. a hardener and an outer sheath defining with the internal part an annular space contg. an unsatd. polyester resin. The novel feature is that the internal part is a stiffener comprising a tube of "cristal" polystyrene contg. 1-5% "impact" polystyrene, coated with a thin polyamide film. The cartridge is used in mine works and the like. The stiffener replaces the conventional glass prod. and is less dangerous to handle. It is easy to break, resistant to solvent and can be produced in a suitable form.