- Background
- What we're looking for
- What we can offer you
- Q&A
We are a world leader in manufacturing of stretch-blowmolded PET (polyethylene terephthalate) bottles and containers. In stretch blow molding of PET containers, spindles are utilized to transport preforms through the oven of blow molding machines. Each spindle is custom-designed to match the specific neck diameter of the bottle being produced. A high-cavitation blow molder may require over 200 spindles, meaning that a full spindle set must be swapped out when switching to bottles with a different neck diameter. This results in significant downtime and operational inefficiencies.
Currently, bottle neck diameters may range from 18 mm to 82 mm, with the most common sizes falling between 26 mm and 38 mm. Developing a spindle design that could be modified to accommodate a range of bottle neck diameters would reduce costs and improve operational efficiency in PET bottle manufacturing.
We are looking for spindle designs or mechanical design concepts wherein a single spindle may be adjusted to accommodate a wider range of bottle neck diameters. Preferably, the designed spindle should accommodate neck diameters from 26 mm to 38 mm. However, designs that accommodate a smaller range within this window are also of interest.
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Preform spindle accommodates ~2.4 mm in preform neck internal diameter (+/- 1.2 mm)
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Adjustable feature accommodates ~2.2 mm of neck finish height differential
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Reason to believe the preform spindle can survive 2 million manufacturing cycles
- Preform spindle adjustable to accommodate neck finish internal diameters from 26mm to 38mm
The Q&A is now closed.
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