Block carton with finish coating

Abstract

The present invention relates to a cover for a block carton, wherein a surface is coated with a coating in order to thereby control the water permeability through that surface. In accordance with the invention a cover for a block carton is provided. Wherein a surface is coated with a varnish in a water-insoluble form. This means that it will be possible to print on the packaging following application thereon of the finish, thereby enabling more rationalised and flexible production. lf both the sides of the cover are covered with finish, the options of recycling the cardboard material used for the cover will be increased.

Description

[0001] The present invention relates to a cover for a block carton, wherein a surface is coated with a coating in order to thereby control the water permeation through the surface. BACKGROUND OF THE INVENTION [0002] Block cartons are used for packing fresh foodstuffs prior to freezing, eg within the fish processing industry for the freezing of fish or fish products in blocks. The block carton is conventionally manufactured in the form of a plane cover with pre-embossed folding lines. Such cover is also known within the industry under such designations as “fishblock-liner” or “blanket”. Such cover consists of a bottom panel with a front and a rear side panel and two opposed end side panels, also designated end panels; wherein a panel, typically the rear panel, is connected to a side on a lid panel; and wherein the lid panel can be provided with one or flaps along the remaining sides of the cover. In order to ensure the best possible closure of the carton when erected (folded) in a fr...

AI Technical Summary

Benefits of technology

"The present invention relates to a cover for a block carton that helps control the water permeation through the surface of the carton. The cover is made from a multilayer cardboard or carton and coated with paraffin on one or both sides. The paraffin coating contributes to the functional properties of the block carton in connection with the freezing process. The cover is designed to prevent parts of the carton from being embedded in the food product during freezing. The cover can be used in combination with a freezing frame and the closed block carton can be visually inspected to ensure correct closure. The technical effect of the invention is to improve the reliability and efficiency of the freezing process by preventing parts of the block carton from being embedded in the food product."

Problems solved by technology

It should be noted that it is important that the corner flaps and the side flaps of the lid are situated on the outside of the carton, since it is undesirable that they are embedded in the frozen fish or the like.

This would mean that, upon removal of the carton from the frozen product, a part of the carton may—more or less visibly—remain in the product, which is undesirable for obvious reasons.

The work involved in erecting the block carton in the freezing frame is conventionally performed manually, whereby the above-described mistakes may readily occur, in particular in view of the very high speed of work.

The drawback of this block carton resides in that the visual inspection of the block carton cannot be performed until after discharge of the block from the rectangular freezing frame, ie following loading of the carton with fish or the like, closing and freezing.

In case of erroneous closure of the block carton it is thus associated with a heavy work load to remedy such erroneous closure.

However, it is a problem in this context that it is necessary to print a desired indication or information directly on the cardboard material prior to coating with paraffin, since the paraffin coating is not suitable for printing.

This means that a paraffin coated block carton is an “end product” that it is not possible to change.

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