28mm Neck Finish – The Key to PCO1810 CSD Bottle Success
PCO1810 is a type of polyethylene terephthalate (PET) resin often used to make preforms for plastic bottles and containers. It is known for having good clarity, stiffness and carbonation retention, which are desirable properties for carbonated soft drink (CSD) bottles. 28mm is a common preform neck finish size used for CSD bottles. The 28mm size provides a good balance between ease of blowing the bottle and having a wide enough opening for filling.
Some key reasons why PCO1810 28mm preforms are popular for CSD bottles:
- Good carbonation retention – The crystallinity and molecular structure of PCO1810 provides good gas barrier properties to help prevent C02 from escaping the bottle. This maintains carbonation.
- High stiffness – PCO1810 offers enhanced stiffness versus standard PET. This helps resist deformation under C02 pressure.
- Good clarity – PCO1810 offers very good clarity for a PET resin. This allows the bright, vibrant colors of sodas to show through.
- Ease of processing – PCO1810 is designed for fast cycles and high output rates on blow molding equipment. It can help maximize productivity.
Resistance to stress cracking – PCO1810 has enhanced resistance to stress cracking from carbonation and cap-off forces. This improves bottle durability.
So in summary, PCO1810 28mm preforms offer an optimal balance of properties like clarity, stiffness and crack resistance that make them a popular choice for manufacturing CSD bottles. The 28mm neck specifically provides a good opening size for filling carbonated beverages.