A METHOD OF PREVENTING CRACK FORMATION IN PACKAGED CRYSTALLINE PLATE PRODUCTS, E.G. BUTTER OR MARGARINE, AN EXTRUSION ASSEMBLY FOR CARRYING OUT THE METHOD AND A PACKAGE FOR USE THEREIN

摘要

A method of preventing crack formation in a packaged crystalline plate product (1), in particular butter or margarine, where, following packaging, an edge (2) of a sheet package abuts on a product surface, is characterized in that means are provided for preventing hypercritical tension concentrations from occurring in that area where the package edge (2) abuts thereon, that which may be obtained for instance by forming a groove (4) in this product area, or for instance by using a package having an edge zone which is not rectilinear.