HDPE bottle conversion to PET

CUSTOMER:
Famous electronic appliance producer for their off-centered neck oval-shaped trigger spray bottle.
TASK:
Help the customer increase chemical resistance by replicating their HDPE bottle in PET.
CHALLENGES:
⦁ Achieve complicated geometry with sharp edges
⦁ Achieve matching color and guarantee its consistency
⦁ Ensure even bottle weight distribution with off-centered neck
⦁ Optimize the bottle weight to increase eco-friendliness
⦁ Guarantee stable bottle base to avoid rocking effect
SOLUTION:
⦁ Bottle drawing was developed by our engineering team to match preform stretch ratios
⦁ Custom masterbatch was created
⦁ Comprehensive preferential heating was used for weight distribution consistency
⦁ Smaller neck size was chosen to cut down the bottle weight: 28 mm instead of 38 mm
⦁ Additional bottle base cooling was used to stabilize it after blowing

TECHNOLOGY USED: FlexBlow2 with preferential heating.

“PET is chosen by extrusion blow moulders over other plastics due to many advantages: lower costs, 4 times higher production capacity, cheaper to recycle, better impact resistance, better resistance to UV and thermal aging, better strength under cold conditions, etc…”

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