FR2812275A1 - Wood-based food container has covering of paper impregnated with paraffin wax to reduce permeability while maintaining aspect of wood - Google Patents

Abstract

The food container (1) is made from a wood-based material such as plywood (2, 3) with the surface designed to receive the food product covered with a layer of paper (4) impregnated with paraffin wax. The paper layer is applyed to the surface of the wood by thermo-forming, followed by dipping the whole assembly in a paraffin wax bath.

Description

The present invention relates to wooden food packaging. She

concerned

  also a method of processing this food packaging.

  It is more and more common to present certain foodstuffs intended for sale in large-scale shopping centers in wooden packaging. Generally, such wooden packaging is made of reconstituted wood of

plywood type.

  The problem with such packaging is due in particular to the fact that the packaged foodstuffs may permeate the packaging. In addition, to receive food, a package must have a certain impermeability

  that plywood type wood does not have.

  One solution to this problem consists in applying a treatment to the wood which gives it the necessary waterproofing qualities. However, to maintain the aesthetic advantages of using wooden packaging, it is important that a

  such treatment does not change the appearance of natural wood in the packaging.

  The object of the present invention is in particular, on the one hand, to provide a wooden food packaging with the impermeability required for the packaging of foodstuffs and, on the other hand, to preserve this appearance of natural wood. To this end, it offers a wooden food packaging consisting of at least one plywood type wooden panel, one face of which is intended to receive foodstuffs, characterized in that said face intended to receive foodstuffs is covered with a sheet of paper and in that the set made up

  by said wooden panel and said sheet is impregnated with paraffin.

  The paraffin will clog the pores of the wooden panel, giving it the desired waterproofing without changing its appearance of natural wood. The sheet of paper is interposed between the wooden panel and the foodstuffs. The paraffin permeating the paper, the latter will become translucent and, therefore, the packaging panel also retains a natural wood appearance on its face.

  intended to support foodstuffs.

  According to another aspect of the present invention, wooden food packaging

  consists of a plywood-type wooden panel in the shape of a tray.

  According to another aspect of the present invention, the sheet of paper is applied by thermoforming on the face of the wooden panel intended to receive foodstuffs. According to another aspect of the present invention, the assembly constituted by the

  wooden panel and the sheet of paper is dipped in a paraffin bath.

  Also proposed is a method of treating a wooden food packaging consisting of at least one plywood type wooden panel, one face of which is intended to receive foodstuffs, characterized in that it comprises the steps consisting in: covering by thermoforming said face intended to support foodstuffs from a sheet of paper; and dip the assembly consisting of the wooden panel and the sheet of paper in

a paraffin bath.

  The features of the invention mentioned above, as well as others

  will appear more clearly on reading the following description of an example of

  realization, said description being made in relation to the attached drawing, o:

  Fig. unique is a schematic representation of food packaging in

wood according to the invention.

  Referring to FIG. single, a wooden food packaging element consists of a wooden panel 1 in the form of a tray comprising a central part forming the bottom 5, a part surrounding said bottom 5 and folded upwards so as to form a rim 6, and a peripheral part 7 extending parallel to the

background 5.

  The panel 1 is of the plywood type formed by two glued plates 2 and 3. The outer face of the plate 3 is intended to receive foodstuffs,

  especially at the bottom 5 and the rim 6.

  According to the invention, this outer face of the plate 3 is entirely covered with a sheet of paper 4. The sheet of paper is applied to the panel 1 by thermoforming. Then, the assembly constituted by the panel 1 and the sheet 4 is impregnated with paraffin. The impregnation is carried out by soaking in a paraffin bath for a time sufficient for the paraffin to penetrate into the pores of the wood. Soaking in the paraffin bath will make the sheet 4 translucent. The appearance of natural wood will thus be preserved, including inside the tray

by panel 1.

Claims (4)

  1) Wooden food packaging consisting of at least one wooden panel (1) of plywood type, one face (3) of which is intended to receive foodstuffs, characterized in that said face intended to receive foodstuffs is covered with 'a sheet of paper (4) and in that the assembly constituted by said   wooden panel (1) and said sheet of paper (4) is impregnated with paraffin.   2) Wooden food packaging according to claim 1 characterized in that it   consists of a wooden panel (1) of plywood type in the shape of a tray.   3) Wooden food packaging according to claim 1 or 2, characterized in that said sheet of paper (4) is applied by thermoforming on said face (3)   said wooden panel (1) intended to receive foodstuffs.   4) Food packaging according to any one of claims   above, characterized in that said assembly consisting of said wooden panel   (1) and said sheet of paper (4) is dipped in a paraffin bath.   ) Process for treating a wooden food packaging consisting of at least one wooden panel (1) of plywood type, one face (3) of which is intended to receive foodstuffs, characterized in that it comprises the stages consisting in: thermoforming covering said face intended to receive foodstuffs with a sheet of paper (4); and dip the assembly consisting of said wooden panel and said sheet of paper in a paraffin bath.