DNP Develops New Packaging Materials for Use with Microwave Ovens
Improved filling aptitude allows users to add content volume
Dai Nippon Printing Co., Ltd. (DNP) has developed a new type of packaging material for use with microwave ovens that automatically releases steam. The new packaging has been achieved as result of improving the steam port portion of the material to allow users to increase contents volume without the need to expand the dimensions or external format of the materials used. Sales of the new packaging material will be launched in October, 2015.
In recent years have seen an increase in foods compatible with microwave ovens, leading to an expansion in demand for packaging materials capable of being heated and used in cooking with microwaves in a simple and safe manner. In answer to these needs DNP previously developed packaging materials allowing for heating of foods in microwaves without removing them from packaging materials as being offered in supermarkets. These heating materials were designed so that an in-built heat port automatically opened when heat and pressure were generated during cooking, allowing steam to be released so as to prevent bursting. To date, however, the steam port portion has been specially configured, working to reduce usable contents volume compared to standard pouches. This has presented the challenge of not been possible to use large unit foods with existing materials. DNP has overcome this challenge by developing a new type of packaging material for use with microwave ovens which include an improved steam port portion, without reducing usable area. This allows users to increase contents volume without the need to expand the dimensions or external format of the materials used.
The newly developed packaging material allows for a 16% expansion in contents volume compared to the currently available packaging. By renewing the steam port portion, filling aptitude has also been improved, making it possible to use the materials with large unit foods, such as potatoes and carrots that were difficult to handle in the past. As a result, it is now possible to use the materials in pouches containing soups, curries and other foods that have recently seized an expanded market share. The upper most layer of the packaging material employs a DNP produced barrier film, which maintains superior barrier properties against oxygen and steam in the post-filling stage. That makes the new packaging compatible with boil-in-the-bag type foods with longer shelf lives.
The newly developed packaging material has been adopted by the Miyajima Shoyu Co., Ltd, in their Utsunomiya Vegetable Gyoza Curry product.
DNP will commence sales of the new product, mainly to food makers while also expanding the line-up of packaging materials for use with microwave ovens, aiming for sales of 2.0 billion yen by 2018.