Backing board for packaging of food products and machinery for producing same.

摘要

A backing plate for use in packings of food products such as salmon sides, fillets and whole salmon, where the product is placed on the support plate and then vacuum packed in a plastic sheet, comprises two pieces of cardboard glued together and laminated with a plastic sheet at both the front and the rear sides. The side of the cardboard pieces which is to be glued to the opposite piece consists of a layer which is less water resistant than the other layers, and the applied glue is a water based glue, which will penetrate into the less water resistant layers and after curing render the two joined layers stiff and water resistant. The resulting plate member is very stiff and is made with a very cheap glue having no harmful additives. Lacquer print in the negative may be provided on the plastic sheet coating, or the glue used for holding the plastic sheet may be dyed. The food product will not, then, come into touch with the lacquer, but exclusively with the plastic sheet. A machinery for producing these plates comprises suspension means (2) for at least two rolls of material, a gluing station (6) for glueing the material webs together, a feeding station (8) having pull-out rollers for intermittently advancing the material. Cutting disks (10) serve to cut the width and a cross beam cutter (12) the lengths of the backing plates.