The fibre swelling explains why paper filters cannot be used to filter zinc chloride solutions and explains why a number of paper plies were used to build up to the desired vulcanized fibre thickness rather treating a single paperboard thickness.
Why paper filters cannot be used to filter zinc chloride solutions and explains why a number of paper plies were used to build up to the desired vulcanized fibre thickness rather treating a single paperboard thickness. This is what the fibre swelling explains.