√Advantages - { injection Blow Moulding }
1. Accurate shaping of the neck.
2. A High level of dimensional accuracy.
3. Mini weight tolerance.
4. The highest quality surface finish.
5. Production absolutely free from waste.
6. Crystal clear containers for pharmaceutical application.
7. Finished bottle without weld line and scrap.
8. Secondary /finishing operation can be avoided.
9. Multi-cavities can be operated.
2. A High level of dimensional accuracy.
3. Mini weight tolerance.
4. The highest quality surface finish.
5. Production absolutely free from waste.
6. Crystal clear containers for pharmaceutical application.
7. Finished bottle without weld line and scrap.
8. Secondary /finishing operation can be avoided.
9. Multi-cavities can be operated.
√Disadvantages -{ injection Blow Moulding }
1. The preform design generally establish the core rod length & diameter.
2. The process is more expensive than extrusion blow moulding.
3. Compromise between preform wall thickness and blow up ratio.
4. The ratio of the maximum wall thickness to minimum wall thickness across a preform cross-section should be less than 1.5 to prevent weld lines.
5. Preform thickness greater than 6 mm is unstable during blowing since the thick section cannot be properly conditioned.
6. The technique is not suitable for manufacturing of bottles with handles such as those used for detergent bottles.
7. Since the injection moulds are required for each preform type of shape, the process is more expensive the extrusion blow moulding.
2. The process is more expensive than extrusion blow moulding.
3. Compromise between preform wall thickness and blow up ratio.
4. The ratio of the maximum wall thickness to minimum wall thickness across a preform cross-section should be less than 1.5 to prevent weld lines.
5. Preform thickness greater than 6 mm is unstable during blowing since the thick section cannot be properly conditioned.
6. The technique is not suitable for manufacturing of bottles with handles such as those used for detergent bottles.
7. Since the injection moulds are required for each preform type of shape, the process is more expensive the extrusion blow moulding.