It will not come as a surprise for anyone to learn that the idea of flash freezing food to achieve a longer shelf life originates from the far north, from Newfoundland to be precise. This is where marine biologist and inventor of frozen food, Clarence Birdseye, made several exploration trips between 1915 and 1922. He observed how the local Inuits hung up freshly caught meat or fish in the icy wind with temperatures as low as minus 45°Celsius thereby making the food durable for the entire winter. Fascinated by this technology Birdseye returned to America and purchased his first deep-freezing equipment for seven dollars – comprising ice, salt and an electric-powered fan. In 1930 his invention had matured and a small grocery store in the USA was the first company to sell flash-frozen foods.
Packaging for frozen products is governed by strict regulations and plays a decisive role in food quality assurance. Special composite materials and films/foils ensure the required barrier properties in order to protect the frozen food against soiling, micro-organism attacks, dehydration, moisture ingress, pressure and impact but also against aroma loss.
Food labelling laws stipulate that the data must be stated on industrially produced frozen products. Mandatory information for Germany includes:
Product name (e.g. black forest gateau, fish fingers),
Name and address of the producer, packaging entity or seller,
List of ingredients,
Label for “deep frozen”, “frozen”, “flash frozen” or “frozen food”,
Period of storage and necessary storage temperature,
Notes such as “Do not re-freeze after thawing" or the like,
Data for batch identification.
So far individually packaged frozen pastries have been exempt from the strict regulations governing food labelling. In accordance with the latest provisions of the finished packaging regulation, however, pastry with filling volumes exceeding 100 grams and labelled as oven-fresh produce – despite transparent packaging – must bear precise indications on the net weight, without any exceptions.
How can a folding box especially for frozen food be opened and closed again without a problem? A solution comes care of carton expert “A&R Carton“. A plastic pull strip incorporated into the carton makes for precise and effortless opening even for older consumers. The plastic strip is located right on the PE coating so that grease-proofing and barrier properties are not impaired. A negative embossing at the open loose end of the pull strip as well as laterally applied grooves ease opening and re-closing of the box, which is simply folded back again.