| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and apparatus for the cast molding of a plastic raw material capable of dispensing with an expensive adhesive or an adhesive requiring time in curing used for closing an injection port heretofore in a method for the cast molding of a plastic product and capable of ensuring a high yield. SOLUTION: A pressure-sensitive adhesive tape double-winding part is peeled up to a predetermined position, and an injection needle is directly thrust in a pressure-sensitive adhesive tape or an injection port is bored in the pressure- sensitive adhesive tape. The injection needle is inserted in the injection port to perform the filling with the plastic raw material and, thereafter, and the peeled pressure-sensitive adhesive tape is again wound to close the injection port. By devising this method, an adhesive is dispensed with not only to reduce production cost but also to dispense with a coating/curing time to enhance productivity.
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