Flame Retardant Additives for Film

The Kafrit Group are a global leader in the production of high quality flame retardant masterbatches and have been partnered with Plastribution for many years

They have been suppliers to the polymer industry for over 40 years and have capacity for 80,000 metric tonnes per annum. The company draws on high levels of expertise and technical know-how. Kafrit Group places a high value on sustainability and has made it to one of the cornerstones of its corporate strategy.

The Kafrit group are already well established in the building and construction industry. They have, recently, further broadened their already extensive flame retardant portfolio to meet the growing needs of this important manufacturing sector. The main areas of application for film in this industry are:

  • Insulation films
  • Banner films
  • Bubble films with & without laminated aluminium foil
  • Roofing & ceiling insulation
  • Packaging
  • Covering boats and houses during extended periods of time.

For these and other applications Kafrit is able to offer a variety of flame retardants compatible with most thermoplastics.

Flame retardants are added to polyolefins and other polymers to increase resistance to ignition, reduce flame spread, suppress smoke formation and prevent a polymer from dripping. The primary goal is to delay the ignition and burning of materials, allowing more time for people to escape the affected area. A secondary consideration is to limit property damage.  They act via a physical or chemical mechanism.

Halogenated flame retardants are the most common type used for plastics due to their favourable cost: performance ratio with bromine-based considered the best. For a particular level of fire resistance, halogenated flame retardants can be used at a lower loading than other types. Due to this low loading the base polymer will retain more of its mechanical properties. Another advantage is that they are easy to process which is especially important in polyolefin films.

Chlorine-based flame retardants are also an important group. Their main advantages are lower cost than bromine-based compounds and better light stability. However the trade-off is processing temperature which is limited to 200°C.

Kafrit offer a wide range of halogenated flame retardants for film which include:

FR 0K360 LD & FR 07062 LD, bromine-based

  • Meets standards FMVSS 302, UL 94, DIN 4102 B1 and B2, EN 13501-1, Euroclass E
  • Typical let-down ratio: 4.0 – 20.0%

FR 07049 LD & FR 00S27 LL are based on a unique Bromine compound which enables a higher processing temp. of >300°C for applications such as cast and bubble films.

  • Meets standards FMVSS 302, UL 94, DIN 4102 B1 and B2, EN 13501-1, Euroclass E
  • Typical let-down ratio: 4.0 – 20.0%

FR 0J720 LL & FR 0B041 LD, chlorine-based.

  • Meets standards FMVSS 302, UL 94, DIN 4102 B1 and B2, EN 13501-1, Euroclass E
  • Typical let-down ratio: 3.0 – 16.0%

Halogen-free flame retardants

Constab, part of the Kafrit group, has developed a new range of halogen-free grades which comply with building industry FR standards:

ZHFR 07158 LD

  • Zero-halogen FR masterbatch with temperature stability up to 200°C.
  • For transparent applications.
  • Meets standards FMVSS 302, UL 94, DIN 4102 B1 and B2, EN 13501-1, Euroclass E
  • Typical let-down ratio: 4.0 – 20.0%

 ZHFR 07175 LD

  • Zero-halogen FR masterbatch with temperature stability up to 235°C.
  • For transparent outdoor applications.
  • Meets standards FMVSS 302, UL 94, DIN 4102 B1 and B2, EN 13501-1 Euroclass E
  • Typical let-down ratio: 4.0 – 20.0%

ZHFR 07169 LD

  • Zero Halogen FR masterbatch
  • Meets standards NF P 92-503 and NF P 92-504 for classification M2 to M4
  • Typical let-down ratio: 8.0 – 14.0%

ZHFR 07179 UNI

  • Zero Halogen FR masterbatch
  • Meets standards NF P 92-503 including NF P 92-504, NF P 92-505 for classification M1 to M4
  • Typical let-down ratio: 10.0 – 18.0%

These new halogen-free flame retardant masterbatches have the following attributes:

  • Easy processing in thin wall applications such as films, as well as in sheets & pipes
  • Good optical properties, therefore suitable for both translucent & transparent articles
  • Excellent UV stability
  • High efficiency at low dosage levels
  • Suitable as replacements of existing systems as well as for new market opportunities.
  • Dedicated grades for various FR standards

Applications include:

  • covering films
  • hoods
  • greenhouse films
  • bubble films
  • and many more.

For further information on grades available and your specific requirements please contact a member of the Plastribution sales team who will be happy to help with your enquiry. We work very closely with the technical team at Kafrit to ensure you have the best technical and commercial solution for your requirements.