| 摘要 |
A method of producing rubber balloons comprises providing a multi-part mould having an annular or other configuration and the parts of components of which are adapted for facile assembly and disassembly. The assembled mould is dipped into a tank of balloon rubber solution to receive thereon a coating of such solution; a boss portion of the mould being then partially immersed. The coating is allowed to solidify or set to create a film contituting the balloon. Through externally applied forces operating through the film the mould components are disassembled and then are individually, sequentially withdrawn from the interior of the balloon film by way of the balloon mouth which latter is developed by reason of the partial immersion of the boss. |
