00 370 445 51431 blow@flexblow.com

      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 advantages over Other Plastics

      PET is choosen by extrusion blow moulders over other plastics due to these reasons:

      • 30% lower producing cost;
      • 4 times higher production capacity;
      • 15% cheaper to recycle;
      • Better impact resistance;
      • Better resistance to UV aging;
      • Better resistance to thermal aging;
      • Better strength under cold conditions;
      • PET fibres are bulkier than PP fibres;
      • Most commonly used on the market.

      Have any questions?