| 摘要 |
The method of producing glass bulb Christmas-tree ornaments consists in shaping glass half-product into a bulb with the main and supporting outlets. A heated bulb is placed in a mould and blow-moulded. Then, the supporting outlet is relaxed, singed and sealed by melting. When placed in a holder, the main outlet is singed and the entire bulb is relaxed. Characterized in that: During the blowing process, the glass bulb is equipped with an additional shape element in the form of a venting protrusion, located at one of the longer walls of the bulb. Once the bulb is relaxed, the protrusion is opened by a burner flame, while the main outlet is sealed by melting.
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