DE69732083T2 - Two-layer composite packaging material, especially for food - Google Patents

Abstract

A composite double-layer packaging material, particularly for food products, comprising a first support layer (10), upon which a second layer (11) is adhered, consisting of a thin film of a material hygienically acceptable for contact with food products so as to form a double-layer sheet, characterized in that said thin film of hygienically acceptable material (11) has sizes larger that the sizes of said first support layer, so that it forms at least a foldable flap (12,13,14) to cover a food product laid upon said double-layer sheet. <IMAGE>

Description

These This invention relates generally to packaging materials and more particularly a double-layer composite packaging paper based, the especially for the packaging of food products is suitable.

Even though should be understood that from the following description no restrictive restriction derive from the use, is the special application of the Packaging material according to this Invention the field of retail sale of food products, such as Ham, cheese, Meats, dairy products and the like

As Well known, as a result of an already established general Practice and in line with increasingly restrictive and more obligatory Hygiene regulations Food products public for retail sale are offered, packaged in packages made from sheets of Paper-based material is wrapped around the product are.

The Paper-based packaging is said to be the well established Meet hygiene and safety requirements, so it has been for some Time was common practice and is still present, composite packaging, comprising a paper-based sheet which is not in contact with the food product is to come together with a thin film of a Plastic material, which meets the legal hygiene and safety regulations and requirements met, to use.

Such Packaging, however, has at least one disadvantage. With the intention of, while the wrapping process, which very often a proper curling of the Paper-based materials together with the food product contained therein involves preventing the food product in question in contact with the outer material Paper-based, it is indeed common practice, a second Sheet of plastic material to use to the relevant food product directly cover, so even if the packaging material very tightly wrapped is to be, the food product in question always from the outer layer Paper base is isolated and separated.

Also if it is certainly efficient, this approach involves always the use of two materials of different types with consequential problems regarding storage, inventory, separate accommodation compartments and the like.

A Object of this invention is the improvement of such types of Packaging materials and the realization of a double layer composite packaging material, which is easily manufactured and easily stored and used can be while It also gives better results than conventional ones Packaging, even the most recent Time developed, offered.

US-A-1 421,027 discloses a double layer composite packaging material, especially for Food products comprising a first carrier layer on which a second carrier layer Layer adheres, consisting of a thin film of a material that for the Contact with food products is hygienically acceptable so to speak to form a bilayer sheet, the second layer being peripheral Has sections over the edges the first carrier layer transcend.

• – das hygienisch annehmbare Material der Schicht ein Kunststoffmaterial ist, das im Verpackungszustand das Produkt vollständig einhüllt,
• – die erste Schicht ein Material auf Papierbasis ist und im Verpackungszustand die zweite Schicht und das darin eingehüllte Produkt vollständig einhüllt, und
• – ferner dadurch gekennzeichnet ist, dass die peripheren verlängerten Abschnitte der ersten Trägerschicht eine oder zwei gegenüberliegende faltbare Klappe(n) bilden.

Therefore, a special object of this invention is a double layer composite packaging material as stated above, characterized in that

• The hygienically acceptable material of the layer is a plastic material which, when packaged, completely envelops the product,
• - The first layer is a paper-based material and in the packaging state, the second layer and the product wrapped therein completely envelops, and
• - Further characterized in that the peripheral extended portions of the first carrier layer form one or two opposite foldable flap (s).

Further Details and advantages of this invention will become apparent from the following description with reference to the attached Drawings in which the preferred embodiments as an explanation and not as a limitation are shown.

In the drawings is:

1 a perspective view of a double-layer composite packaging sheet material with a foldable foldable flap;

2 a perspective view of a double-layer composite packaging sheet material with two foldable overlapping flaps.

Referring now to 1 A first embodiment of this invention comprises a base sheet 10 made of paper material on which a thin film 11 plastic material of a type approved for use in food products. This movie 11 will be on the paper base sheet 10 adhered by conventional methods and devices.

The characteristic feature of the thin films 11 However, it is much larger than the basic sheet 10 and in particular a free flap 12 forms.

After the food product has been placed on the double layer portion of the packaging sheet, the free flap thus formed becomes 12 folded and placed over the food product to perform the same function as fulfilling a second separate sheet of prior art plastic material.

In terms of 2 In the drawings, a second embodiment of this invention comprises a base sheet 10 , also made of a paper material or substantially of paper material, on which a thin film 11 made of plastic material of a type approved for use in food products. Such a movie 11 is made by means of conventional methods and devices for adhesion to the paper base sheet 10 brought.

The characteristic feature of this thin film 11 However, it is much larger than the basic sheet 10 and in particular two free and opposite flaps 13 and 14 forms. After the food product has been placed on the double layer portion of the packaging sheet, the opposing flaps thus formed become 13 and 14 folded and laid over the food product to perform the same function as that achieved by a second separate sheet of prior art plastic material. After folding, the flaps can 13 and 14 however, they may also overlap slightly in the intermediate area so as to increase the coverage effect on the food product.

In a further embodiment, not shown, which will be readily apparent to those skilled in the art from the above description, the thin film can 11 also form one or more additional flaps orthogonal to the flaps 13 and 14 are to envelop the food product not only on two lateral sides but also on the other two remaining opposite sides.

As mentioned above, For example, the adhesion between the base sheet and the overlying plastic material thin film may be with Help any desired Procedure and any desired device However, it is definitely suggested that the liability is not over the entire contact area enough to leave a non-adherent peripheral edge which is intended for folding the upper flap or flaps to facilitate.

above have been the preferred embodiments However, it should be explicitly understood that professionals in the field further changes and modifications of the details and material compositions and thicknesses and shapes, without departing from the scope of this invention, as in the attached claims defined to go out.

Claims (5)

Double-layer composite packaging material, in particular for food products, comprising a first carrier layer ( 10 ), on which a second layer ( 11 consisting of a thin film of a material which is hygienically acceptable for contact with food products so as to form a bilayer sheet, the second layer being of greater dimensions than the dimensions of the first carrier layer (12). 10 ), characterized in that - the hygienically acceptable material of the layer ( 11 ) is a plastic material, - the first layer ( 10 ) consists of a paper base material, and further characterized in that - the larger dimensions of the second carrier layer ( 11 ) one or two opposite foldable flap (s) ( 12 ; 13 . 14 ) and the adhesion between the base carrier layer ( 10 ) and the overlaid foil ( 11 ) extends over less than its entire contact surface to leave a non-adherent peripheral edge to facilitate folding of the top flap (s). Composite packaging material according to claim 1, characterized in that the film of hygienically acceptable material ( 11 ) two opposite side flaps ( 13 . 14 ). Composite packaging material according to claim 2, characterized in that the two opposing flaps ( 13 . 14 ), after they have been folded onto the food product, lie side by side in the intermediate area. Composite packaging material according to claim 2, characterized in that the two opposing flaps ( 13 . 14 ), after being folded on the food product, slightly overlap with each other in the intermediate area. Composite packaging material according to claim 1, characterized characterized in that the film of the hygienically acceptable material four vertically opposite Flap forms, which folds crosswise to the food product are, with or without mutual overlap.