| 摘要 |
The invention relates to a mould enabling a heart-shaped balloon to be manufactured. It consists of a foot (for example of 6 mm in width) and of a part of the body (1) progressively widening out until three times its initial width, that is 18 mm (2). At approximately 6/7 mm from the hollow of the heart, the mould is progressively reduced (3) until a rounded part of approximately 1 mm in width is obtained since the impact with the latex has to take place without a flat part. The technical characteristics of the mould according to the invention can be adapted to all moulds relating to balloons, exhibiting possible stretching over parts of the mould when inflating. <IMAGE>
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