Glass-fibre reinforcement for plastics hot water storage heater tank - comprises one epoxy! impregnated and one dry strand, thus economising impregnant

摘要

Parent patent describes mfr. of glass-fibre-reinforced plastics, pressure-resistant, container, esp. for a hot water storage heater winding =2 glass-fibre strands about an inner plastics container. In this addn. one of the strands is thoroughly impregnated with resin and wound about the container whilst in this state, but a 2nd strand is wound about the container whilst dry i.e. unimpregnated. Less impregnant is needed than with prior-art, similar processes.