| 摘要 |
Safety glasses (1) which are produced in one piece from a sheet- or foil material of plastic. The safety glasses (1) have a bending for realising a spring action which is sufficient for fixing and retaining the safety glasses on a wearer's head. The safety glasses (1) are of one piece manufacture and are separable and rolled up together on a roll, the arching direction of the roll coinciding with the bending direction of the safety glasses (1). A method of producing safety glasses (1) comprises the steps that the outer contours of the safety glasses (1) are formed from a web of sheet- or foil material. In one step, each one of the safety glasses (1) is given a permanent bending for realising a spring action. The inherent spring action is sufficient for fixing and retaining the safety glasses on a wearer's head. The bending is realised by heating of the safety glasses (1), whereafter they are cooled for realising a permanent bending. |
