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Polymer Additives
Polymer Additives
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  1. Home
  2. Products & Applications
  3. Caps and Closures

Caps and Closures 

The use of additives in plastic caps and closures is a practical requirement to allow for easier processing and handling. Performance restrictions and requirements in consumer sensitive applications, such as food and drinks, increases the demand for more advanced additives that will offer an improved quality to reduce impact on the final product.

Why Use Additives in Caps & Closures?

Slip, torque and mold release additives allow plastic screw caps and closures to be produced and used more efficiently. Our torque release additives not only offer processors and end-users flexibility, performance and better quality plastics as expected, they also provide exceptional stability with reduced odour and colour degradation.

Key benefits

  • High slip performance with improved stability
  • High temperature performance
  • Low taste
  • Low odour
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Caps & Closures
Caps & Closures

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Download our Incroslip SL Brochure

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Incroslip SL
Incroslip SL

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Oxidative Stability and Organoleptic Properties

Standard torque release additives can demonstrate poor oxidative stability that can result in poor odour, taste and taint. This can have a huge impact on the finished article, for example bottled water.

Our range of highly stable additives have been shown to significantly reduce odour and taste issues in more challenging environments, such as in warmer climates or when exposure to UV light.

In particular, Incroslip SL, is extremely stable and therefore less prone to oxidation. This can add value in caps and closure applications such as water bottle caps where taste and odour is critical.

Optimising torque release performance of Incroslip SL in HDPE caps

You can achieve the excellent torque release performance of traditional erucamide-based slip additives, with the increased stability and superior organoleptic properties of Incroslip SL. These properties help to avoid the taste, odour and colour issues that may be faced with traditional erucamide-based additives. 

Find out more by downloading the datasheet.

Optimising torque release performance with Incroslip SL in HDPE caps

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View Our Webinar 'Complying with Food Contact Legislation & Delivering Innovative Packaging'

Listen now as our regulatory and technical experts guide you through what is necessary for polymer additive compliance in food contact packaging applications.

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Case Study : Reduce taste and taint issues in caps

A manufacturer of bottled water approached Croda to reduce poor organoleptic properties that were present due to using a standard fatty acid amide torque release agent for the bottle cap. 

The manufacturer was using an ozone sterilisation process so Croda suggested using Incroslip Q, a tailored solution that can minimise taint and taste issues while providing the level of torque release force required to remove caps. 

Incroslip Q helped the manufacturer to balance good organoleptic properties through the ozone sterilisation process and good cap closure properties to ensure a well-received consumer product.

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Odour characteristics of Incroslip range against standard fatty amides using dynamic olfactometry

Product Effects

  • Mold release
  • Torque release

Mold release

The Incroslip range can also aid in the molding and release of caps in injection and compression molding process. This allows for continuous production and the elimination of silicone sprays while also improving surface finished and decreasing the number of rejects and waste.

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Incroslip™ C

Proprietary

Incroslip C can be used as a torque release agent in beverage closures and is recommended for all sensitive applications such as food packaging and.....

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Incroslip™ Q

Proprietary

Incroslip Q can be used as a torque release agent in a range of beverage closures including bottled water Incroslip is a specially developed food.....

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Incroslip™ SL

Proprietary

Incroslip SL is a specially developed food approved additive with exceptional slip and stability properties It is innovative market leading.....

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Incroslip™ B

Proprietary

Incroslip is a specially developed food approved slip additive range with exceptional stability and low odour The products offer an optimised.....

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Torque release

Torque release additives allow caps and closures to be tightly added to bottles while still allowing easy removal in end use.

Learn more
View product details

Incroslip™ C

Proprietary

Incroslip C can be used as a torque release agent in beverage closures and is recommended for all sensitive applications such as food packaging and.....

View product details

View product details

Incroslip™ Q

Proprietary

Incroslip Q can be used as a torque release agent in a range of beverage closures including bottled water Incroslip is a specially developed food.....

View product details

View product details

Incroslip™ SL

Proprietary

Incroslip SL is a specially developed food approved additive with exceptional slip and stability properties It is innovative market leading.....

View product details

View product details

Incroslip™ B

Proprietary

Incroslip is a specially developed food approved slip additive range with exceptional stability and low odour The products offer an optimised.....

View product details

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Polymer Additives

Our range of speciality effects for polymers provide multiple benefits in processing and end-use. Suitable for a range of applications from packaging to automotive, our products enhance processing efficiency leading to cost saving and improved quality of end products.

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