Constantia FFP have led the way in ovenable packaging putting the first fully printed ovenable bag on supermarket shelves.

Estercook was launched in 2013 and has since driven innovation in the sector, lifting sales, providing outstanding convenience for consumers and reducing the risk of contamination in the kitchen, as raw protein stays separate from everything else and the need for the consumer to touch the product is removed. It has created a whole new process from the supermarket shelf, to the oven, to the table without the product once having to be touched.

Estercook has changed the shape of the market for ovenable packaging, pushing the boundaries of expectation and positioning Constantia FFP firmly as industry experts in this field.

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estercook ovenable packaging


Barrier version available (Estercook+)

Consistent cooking results

Microbial protection

Freezer or fridge direct to oven

Keeps the oven clean

Aids portion control

Variety of pack formats

Use in oven and microwave

Moisture retention

Tailored steam release


Estercook is available on the reel, as pre-made bags or stand up pouches and can also be offered with barrier in the form of Estercook+.

On the Reel

On the Reel

Estercook is a high-performance polyester film laminate supplied on the reel which can be run on any standard packing lines. Heat sealable on one side with a reverse print sandwiched between the laminate.

Pre-made Bags

Pre-made Bags

Estercook pre-made bags feature a high-slip polyester laminate for ease of opening during packing. Supplied in a variety of formats and sizes, they can be easily heat-sealed once filled.

Stand-up Pouches

Stand–up Pouches

Estercook stand up pouches feature a high-slip polyester laminate for ease of opening during packing. They are available in a variety of sizes and can be easily heat-sealed once filled. Brand owners value the full-face branding opportunity and efficient use of shelf space, plus ease of use throughout the supply chain.

Constantia FFP’s ovenable packaging can be provided with PCR content to mitigate the plastic packaging tax

Constantia FFP’s own range of ovenable packaging, Estercook, can be supplied with 30% post-consumer recycled (PCR) content. This not only provides a product exempt from the UK plastic packaging tax, but offers a fantastic finish to help your product stand out on shelves with fully printed flexible packaging.

Plastic packaging machine

Testing and Compliance

Estercook is fully tested and verified to conform to food safety standards. With more than 30 years’ experience in high temperature applications, we have a proven route to a rigorous approval process for all of our packaging.

Everything we manufacture must comply with the Food Contact Framework Regulation (EC) 1935:2004. All of our Materials, inks & adhesives conform to all current European food contact legislation for use as a dual-ovenable direct food contact material.

High temperature packaging is subjected to additional testing and two initial types of tests are undertaken: Specific Migration Limit (SML) tests, which test specific materials in migration, and Overall Migration Limit (OML), which tests the completed laminate. All tests are conducted at high temperatures providing a ‘worst case’ for both migration and chemical decomposition products.

Only when all testing is complete is a structure approved for use in your packaging.

Campylobacter and ovenable packaging

Estercook can provide real benefits in the battle against Campylobacter contamination, a leading public health issue.

Constantia FFP’s Estercook Roast-In-The-Bag packaging presents a physical barrier to the Campylobacter bacterium. Raw meat is contained within the pack from the factory production line all the way through the supply chain until it comes out of the consumer’s oven, cooked and ready to eat.


Ovenable packaging can provide significant lightweighting opportunities which in turn can see a substantial reduction in volume of packaging and in turn carbon emissions. Many ready-meals currently on the market are presented in a tray, with a film lid and cardboard sleeve. By replacing all of this packaging with one ovenable pouch, it is estimated that a weight saving of 83% can be achieved.

Estercook packaging


Ready Meals

Raw Meat & Poultry

Food to go

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All of our products / materials are made to order, therefore minimum order quantities apply.

Standard Disclaimer

This Declaration of Compliance describes the status of the product(s) specified under General Product Information. The user of the product (or downstream user, if applicable) is responsible for ensuring that the finished food package complies with applicable migration limits in the food itself under actual conditions of use. Furthermore, the food packer is responsible for verifying possible interactions of the product(s) or its components with the foodstuffs (e.g. modification of odour, taste, consistency, migration etc.) which are to be checked prior to use and in function of the end-uses. This declaration replaces all previous declarations for the same specification/ product. It remains valid until a change in the legislation or new scientific information changes the legal status.