FR2784662A1 - Package for pasty food product comprises two complementary parts with overlaping edges that form lid and linked by temporary seal ruptured by pull tab formed from film element. - Google Patents

Abstract

The product (18) is enclosed between first (12) and second (14) complementary parts that form a housing. The first part has a free edge that overlaps the free edge of the second part to form a lid. At least the first part is provided with a first film element (22) that covers its whole inner surface. This film element extends beyond the free edge of the first part to form an opening tab (16) outside the housing.

Description

 The present invention relates to a device for packaging a pasty food product, forming the first container and the protective case of said product, and its manufacturing process.

 Certain known packaging devices carry out the individual packaging of the pasty food product by means of a large number of different elements in order to ensure both the mechanical protection of the product, a gas-tight seal between the product and the external environment. , allow easy opening of this device and provide the consumer with information about this device.

 Other packaging devices of the prior art have a simple structure consisting of two plastic half-shells joined by a portion of their periphery, but this type of device is more suitable for a cast food product and also comprises a annular edge preventing the device from having a general shape corresponding to that of the product.

 The present invention aims to provide a device for packaging a pasty food product and its manufacturing process with a view to obtaining a packaging device having a minimum of separate constituent elements, the number of manufacturing steps of this device being reduced to the maximum, this device having a good presentation for sale, providing sufficient mechanical and physicochemical protection of the product and having a shape corresponding substantially to that of the product; this device allowing, in addition, to group said products in batches without adding other elements than those already constituting said device for the individual packaging of products; the manufacturing process also making it possible to obtain a packaging grouping together a batch of products, this process having no additional steps leading to a significantly higher manufacturing price compared to the process for manufacturing packaging devices for individual packaging of products.

This object is achieved by the fact that the device for packaging a pasty food product according to the present invention is characterized in that it comprises:
a first and a second part enveloping said product in a complementary manner by forming a housing, separable and made of a flexible material easily deformable manually, at least one of said first and second parts being hollow, said first part having a free edge overlapping the free edge of the second part so as to form a cover, at least the first part being provided with a first film element covering at least the entire internal face of said part by adhering to said internal face, said first film element projecting beyond beyond said first part in order to form an opening tab external to said housing, and
waterproof temporary connection means between a connection zone of said first film element covering the edge of the first part and the edge of the external face of the second part, said connection means being capable of breaking under a pulling action on the opening tab.

 Thus, it is understood that the only four constituent elements of the aforementioned device (first part, second part, first film element and connecting means) are sufficient to form a packaging device inside which is housed the product thus protected from external aggressions, the first film element forming both the subsequent coating of the first part and gripping means (opening tab) integral with the first part and allowing the user to open the packaging device by the separation between the first and second parts simply by pulling on this opening tab with one hand, the user holding, with his other hand, the second part of the device.

The following advantageous arrangements are also preferably adopted:
the device further comprises a second film element covering at least the entire internal face of said second part, said first and second film elements being made of a material at least partially gas tight;
the said film element (s) is (are) made of a material which can be deformed by thermoforming;
said flexible material is a plastic material;
-said flexible material is a fatty consistency to the touch;
said flexible material is transparent and in that said first and second film elements are colored, at least one of them bearing visible signs through said flexible and transparent material;
-said first and second parts have a shape of half-shell of revolution;
the free edge of said first and second parts is circular and the internal diameter of the border of the first part is at least equal to the external diameter of the border of the second part; and,
the thickness of said flexible material is substantially constant for each of said first and second parts; and,
the external transverse profile and the internal transverse profile of said first and second parts have substantially the shape of an ellipse part.

 Furthermore, the invention extends to the manufacturing process making it possible to obtain the packaging device according to the invention. This manufacturing process is characterized in that it comprises the following stages: - at least one product is supplied; a first and a second sheet of a thermoplastic film are provided; said first and second sheets are deformed by thermoforming, respectively according to first and second complementary imprints each corresponding at least to half of the external face of said product so as to delimit first and second hollow film elements respectively, the first imprints made in the first sheet having a slightly larger contour than that of the second imprints made in the second sheet; a flexible plastic material is injected on the convex outer face of each film element, so as to form a series of first packaging device parts from the first film elements and a series of second packaging device parts from the second film elements; - said first and second film elements forming the interior wall of the housing constituted by said first and second parts of the packaging device are individually cut, the cutting of said first film elements projecting beyond said first part in order to form an opening tab outside said housing and the cutting of said second film elements along the contour of said second device parts; a product is placed in each second part of the packaging device; - it is closed, under modified atmosphere if necessary, each second part of the device by covering it with a first part of the packaging device forming a cover by the fact that its free edge overlaps the free edge of the corresponding second part; and - a sealed area is fixed, by means of temporary connection, a connection zone of each of said first film element covering the border of the internal face of the first part with the border of the external face of the second part, said connecting means being capable of breaking under a pulling action on the opening tongue.

In addition, the invention extends to a packaging intended for the packaging of a batch of pasty food products comprising a plurality of packaging devices in accordance with the invention, this packaging preferably being characterized by the following advantageous arrangements:
all the first film elements come from a strip cut from a single sheet, each pair of two adjacent devices being provided with a connecting section belonging to the strip and connecting the adjacent devices to each other, said connecting section being provided with a transverse pre-cut line allowing the separation between the adjacent devices by tearing the connection section at this pre-cut line;
the devices are placed in a line, the packaging then forming a chain delimited by two end devices, at least the first film element of one of the end devices projecting from the corresponding first part in order to form a label;
the devices are placed in a line, said packaging forming a chain delimited by two end devices whose first film element protrudes from the first corresponding part in order to form an end section, the end section of each end device being shaped so as to to be able to cooperate in a reversible manner with a view to securing the two ends of the strip; and,
the packaging comprises a number of devices which is a multiple of six.

 The present invention also extends to the process for manufacturing a packaging according to the invention intended for the packaging of a batch of pasty food products, this packaging comprising an integral assembly of devices each forming the first container and the protective case. of one of the products, this manufacturing process being characterized in that it comprises the steps: - at least one food product is supplied; -a first sheet of a film is provided; - said sheet is deformed by thermoforming according to imprints corresponding substantially to a portion of the outer face of said product so as to delimit first film elements; -inject a flexible plastic material on the convex outer face of each film element, so as to form a series of first parts of conditioning device on said strip, intended to form a housing for the product, the inner wall of which is made up of said film elements; -on is cut, in said sheet, at least one strip comprising a series of first device parts connected together by a connecting section; - a line of precuts is produced by pressing a blade on each connecting section of said strip so as to delimit opening tabs external to said corresponding housing; -one flexible plastic is injected into a mold having a shape complementary to said imprint with respect to the external face of the product in order to produce second parts of the packaging device, said mold having a contour slightly smaller than the contour of said imprint ; - a product is placed in each second part of; - a cut strip is positioned on a series of second aligned device parts so that each first device part of the tape covers a second device part, the free edge of each first packaging device part overlapping the free edge of the second part of corresponding positioning device; and - a sealed area is fixed, by means of temporary connection, a connection zone of each of said first film element covering the edge of the internal face of the first part of the device with the edge of the external face of the second part of corresponding device, said connecting means being capable of breaking under a pulling action on the opening tab of said corresponding packaging device.

 The invention will be better understood, and secondary characteristics and their advantages will become apparent during the description of embodiments given below by way of example.

 It is understood that the description and the drawings are given for information only and are not limiting.

Reference will be made to the accompanying drawings in:
FIG. 1 is a schematic perspective of the packaging device according to the present invention;
FIG 2 is a bottom view of the device of Figure;
FIG. 3 is a side view of the device in FIG. 1;
FIG 4 is a longitudinal section of the device of Figure 3 in a direction parallel to the sheet;
FIG. 5 is a detailed view of part V of the figure;
FIG. 6 is an enlarged view of detail VI of FIG. 4;
FIG. 7 represents the packaging according to the present invention, intended for the packaging of a batch of products; and
FIGS. 8 to 10 are schematic representations of certain stages of the manufacturing process according to the present invention.

 The packaging device 10 according to the present invention comprises, as can be seen in FIG. 1, two half-shells forming a first part 12 and a second part 14, these parts 12 and 14 having their concave internal wall placed opposite l 'from one another in order to constitute a housing for a pasty food product, an opening tab 16 projecting out of the envelope formed by the two parts 12 and 14.

 According to the illustrated embodiment, the pasty food product, intended to be packaged by the packaging device 10 according to the invention, is a pressed cheese 18 having a shape of revolution whose generator 17 corresponds substantially to a portion of ellipse bounded by an elliptical curve and a straight line perpendicular to the long axis of this ellipse, this portion of ellipse having a length less than half the total length of the ellipse. Thus, this cheese 18, visible in Figure 4, has a flattened ovoid shape in longitudinal section (Figure 4) and a circular shape in cross section.

 The packaging device 10 has substantially the same shape as the cheese 18, so that it also has a symmetry of revolution about an axis Z.

 However, so that the two half-shells, formed by the first and second parts 12 and 14, completely envelop the cheese 18, it is provided that each of the first and second parts 12 and 14 has a height, along the axis Z, slightly greater than half the thickness of the cheese 18. Thus, the free edge 12a of the first part 12 overlaps the free edge 14a of the second part 14 by forming an annular superposition zone 20 substantially parallel to the axis of revolution Z and intersecting at right angles the plane (X, Y) forming a transverse plane of symmetry, orthogonal to Z and also corresponding to the plane obtained from the rotation around the Z axis of the major axis of the ellipse from which comes the generator 17.

 In the case of the illustrated embodiment, the circular border 12c (and its free edge 12a) of the first part 12 has an internal diameter equal to or slightly greater than the external diameter of the circular border 14c (and of its free edge 14a) of the second part to facilitate, during assembly of the device, the aforementioned overlap.

 In this way, it is understood that the first part 12 constitutes a cover with respect to the second part 14, the latter constituting both the bottom and a portion of the side walls of a housing housing the cheese 18.

 It is understood that, without departing from the scope of the present invention, other solutions can be envisaged with regard to the shape of each part 12 and 14 which does not necessarily correspond to half of the outline of the product, the latter possibly having a shape completely different from the shape of cheese 18, described above.

 According to the preferred embodiment of the present invention, the first and second parts 12 and 14 are made of a flexible material, of fatty consistency to the touch in the form of an injectable plastic, this material being capable of being tinted in its mass or stay transparent. Materials fulfilling these conditions are well known to those skilled in the art.

 It is expected that the first and second parts 12 and 14 have a thickness of flexible material which is substantially constant and much smaller than the dimensions of the cheese 18, so that the overlap of the free edge 12a of the first part 12 on the second part 14 does not not prejudice to the general shape of the packaging device 10.

 The first and second parts 12 and 14 are coated, over the entire surface of their concave walls 12b and 14b, respectively with a first film element 22 and a second film element 24. Each of the first and second film elements is provided under the form of a thermoplastic film at least partially gas tight (oxygen, carbon dioxide, water vapor, etc.) making it possible, in particular, to create a controlled sealing barrier between the cheese 18 and the outside of the device 10 .

 The choice of the material constituting the first and second film elements will therefore depend in particular on the level of gas tightness desired between the interior and the exterior of the packaging device 10. This material is chosen to adjust the level of sealing ( between total tightness and total permeability) depending on the product 18 and its storage characteristics.

 The first and second film elements 22 and 24, better visible in FIGS. 5 and 6, thus constitute a thin film, preferably tinted and / or printed so that the device 10 bears a distinctive color and signs (drawings, logos, brands , inscriptions ...) visible through the flexible material constituting the first and second parts 12 and 14, which are advantageously transparent.

 In fact, according to a preferred variant of embodiment, the first (second) part 12 (14) is made of an essentially flexible material, and preferably completely, transparent which covers the printed convex face of the first (second) film element 22 (24 ).

In this way, the use of a folded outer plastic sheet is avoided, around the convex external faces 12d and 14d of the first and second parts 12 and 14 of the device 10, and carrying the information intended for consumers.

 According to an essential characteristic of the present invention, to avoid the use of too large a number of distinct elements within the device, provision is also made for the opening tongue 16 to be constituted by an extension of the first film element 22 beyond the free edge 12a of the first part of the device 12. Thus, it is understood that the opening tab 16 and the first film element 22 come from the same plastic film which can be deformed by thermoforming. Such films are well known to those skilled in the art, for example in the form of multilayer materials which can be deformed in a press, without, however, the mechanical characteristics of tear resistance of these films being lowered.

 As can be seen in FIG. 6, the first and second film elements 22 and 24 extend over the concave internal surfaces 12b and 14b of the first and second parts 12 and 14 also completely covering the free edges 12a and 14a: l 'Obtaining this structure will be better understood in the light of the description of the manufacturing process presented below.

 So that the first and second parts of the device 12 and 14 are integral with one another before the opening of the device 10, it is provided that the two parts 12 and 14 are connected to each other at the level of the overlapping zone 20 by any sealed connection means which can be undone when the user wanting to open the device 10 will pull on the opening tab 16.

 In detail, in order to achieve this tight connection, a removable attachment is made (for example by heat sealing, bonding, treatment with ultrasound or by electrical discharge) between a connection zone of the concave internal face of the first film element 22 corresponding to the superposition zone 20, that is to say covering the border 12c of the first part 12, and the border 14c of the external face 14d of the second part 14.

 Indeed, preferably, the second film element 24 does not cover the external face 14d of the second part 14, the free edge of the second film element stopping at the circular limit between this external face 14d and the free edge 14a adjacent.

 According to another essential characteristic of the present invention, it is possible to produce a packaging for the conditioning of a batch of cheeses 18 by placing devices 10 at the tail leu leu, in the manner of a file or a rosary , or according to any other arrangement in the form of a network connecting devices 10 to each other, by providing that the first film element 22 of each of the devices 10 comes from the same sheet.

 In Figure 7, there is shown an embodiment of a package 30 according to the present invention comprising devices 10 placed in line one behind the other and connected together by a connecting section 32 resulting from the extension of two first film elements 22 adjacent and carrying at least the opening tab 16 of one of the two adjacent devices 10.

 Thus, it is understood that a packaging 30 is obtained for a batch of cheese 18, produced from the same structural elements as each of the packaging devices 10 for the individual packaging of cheeses 18. In fact, it is the same film which forms both the first film element 22 of each device 10, that is to say the internal coating of the first part of device 12 forming a cover, and the connecting section 32 between each of the adjacent devices 10.

 Advantageously, the chain formed by the packaging 30 of FIG. 7 is delimited at its ends by two end devices 10 ′ comprising a first film element 22 which is extended, in addition by a connecting section 16 connecting this end device 10 ′ to the neighboring device 10, by an end section 34 capable of carrying inscriptions in order to form a label informing the consumer of the characteristics of the batch of cheese 18 presented within the packaging 30.

 In addition, this end section 34 comprises a cutout 36 forming an opening intended to allow the packaging of the packaging 30 on the rod of a store display. This cut 36 is advantageously supplemented by a complementary cut 38, produced at the free end of a terminal section 40 which constitutes the extension of the first film element 22 of the other end device 10 ', so that this cut complementary 38 forms a male element which can cooperate in a reversible manner with the cutout 36 forming a female element with a view to securing the two ends of the strip to which the end sections 34 and 40 belong, as well as the connecting sections 36 and the first film elements 22. In this way, the chain formed by the packaging 30 can be closed on itself to form a loop that can be hung on the stem of a sales display.

 Preferably, each package includes a number of devices 10, and of cheeses 18, multiple of six (6,12,18 or 24 cheeses 18). Preferably, each series of six devices 10 forms a line, the lines being parallel to each other and connected to each other at least at a common end section, such as the end section 34 forming the label and / or the suspension element provided with the cutout 36.

 To facilitate the separation between each of the packaging devices 10 after the purchase of the packaging 30, it is provided that each connecting section 16 comprises a line of precuts 42 constituting a primer for transverse tearing of the connecting section 16. The method manufacturing the packaging 30 of FIG. 7 will now be described in relation to FIGS. 8 to 10 presenting some of the steps of this process.

According to the present invention, this manufacturing process is characterized in that it comprises the following stages: -on at least one food product is supplied (cheese 18 per; -a first and second sheets 44 of a thermoplastic film are provided; said first and second sheets 44 are deformed by thermoforming (FIG. 8), respectively according to first and second complementary impressions 46 each corresponding at least to half of the external face of said product so as to delimit first and second elements respectively 22.24 hollow films, the first impressions 46 made in the first sheet 44 having a slightly larger contour than that of the second impressions made in the second sheet; a flexible plastic material is injected on the convex external face of each film element 22 , 24, so as to form a series of first parts 12 of dispos itif conditioning from the first film elements 22 (FIG. 9) and a series of second parts 94 of device for conditioning from the second film elements 24, each first part 12 of device being intended to cooperate with a second part 14 of device to form a housing for the product 18, the inner wall of which is made up of said film elements 22 and 24; - said second film elements 24 are cut individually from the second sheet; -on is cut, in said first sheet 44, at least one strip 48 comprising a series of first parts 12 of device connected together by a connecting section 32; - a line of precuts 42 is produced by pressing a blade on each connecting section 32 of said strip 48 so as to delimit opening tabs 16 external to said corresponding housing; a product 18 is placed in each second part 14 of; a band 48 cut out is positioned on a series of second parts 14 of the device aligned so that each first part 12 of the device of the band covers a second part of the device 14, the free edge of each first part of the conditioning device overlapping the free edge of the second part of the corresponding positioning device; and -tightly fixed, by means of temporary connection means, a connection zone 20 of each of said first film element 22 covering the edge of the internal face 12b of the first part of device 12 with the edge of the external face 14d of the corresponding second device part 14, said connecting means being capable of breaking under a pulling action on the opening tab 16 of said corresponding packaging device 10.

 Preferably, the temporary connection means consist in making a removable seal, such as gluing, heat-sealing, or the like, between the internal surface of the annular border of each of the first film elements 22 and the external face 14d of the border 14c of the second part of device 14.

 Thus, it is understood that the sheet 44, forming a tear-resistant film, will contribute, within the packaging 30, to several functions: a sealing barrier for the cheese 18, the opening of each device 10, through the opening tab 16, the link between the devices 10, via the connecting section 16, the information on the batch of products through the label 34 and the information on each individual product through the prints made on the concave outer face of the first film elements 22, these inscriptions being visible through the transparent material of the first part of device 12.

 Thus, thanks to a very limited number of elements, the present invention makes it possible to obtain a device for the individual packaging of a pasty food product, the production of a package grouping together a batch of products because the devices 10 are interconnected at the connecting section 32, as well as means for suspending the packaging 30 (cutout 36), while providing support for printing the information available to the consumer (composition, price, date preemption, barcode, logo, advertising offer, etc.), using film elements 22 and 24.

 In addition, it is understood that the present invention makes it possible to produce packaging for packaging the desired number of cheeses by only modifying the manner of cutting the sheet 44 in order to modify the number and the arrangement of the connecting sections 32 between the packaging devices. individual 10. Thus, the same production tools can be used for the individual manufacture of devices 10 and for the manufacture of packaging 30 having multiple layouts.

Claims (20)

 1. Device (10) for packaging a pasty food product (18), characterized in that it comprises: a first (12) and a second (14) parts enveloping said product (18) in a complementary manner by forming a housing, separable and made of a material, at least one of said first and second parts (12,14) being hollow, said first part (12) having a free edge (12a) overlapping the free edge (14a) of the second part (14) so as to form a cover, at least the first part (12) being provided with a first film element (22) covering at least the entire internal face (12b) of said part by adhering to said internal face (12b), said first film element (22) projecting beyond the free edge (12a) of said first part (12) in order to form an opening tongue (16) external to said housing, and waterproof temporary connection means between the first part (12) and the two xth part (14), said connecting means being capable of breaking under a pulling action on the opening tongue (16).  2. Device (10) according to claim 1, characterized in that it further comprises a second film element (24) covering at least the entire internal face (14b) of said second part (14), said first and second film elements (22,24) being made of a material at least partially gas-tight.  3. Device (10) according to any one of the preceding claims, characterized in that the said film element (s) (22, 24) is (are) produced in one material which can be deformed by thermoforming.  4. Device (10) according to any one of the preceding claims, characterized in that said flexible material is an injectable plastic.  5. Device (10) according to any one of the preceding claims, characterized in that said flexible material is a material of fatty consistency to the touch.  6. Device (10) according to claim 2, characterized in that said flexible material is transparent and in that said first and second film elements (22,24) are colored, at least one of them bearing signs visible through said flexible and transparent material.  7. Device (10) according to any one of the preceding claims, characterized in that said first and second parts (12, 14) have the shape of a half-shell of revolution.  8. Device (10) according to claim 7, characterized in that the free edge (12a, 14a) of said first and second parts (12,14) is circular and in that the internal diameter of the edge (12c) of the first part (12) is at least equal to the external diameter of the edge (14c) of the second part (14).  9. Device (10) according to claim 7, characterized in that the thickness of said flexible material is substantially constant for each of said first and second parts (12,14).  10. Device (10) according to claim 9, characterized in that the external transverse profile and the internal transverse profile of said first and second parts (12,14) have substantially the shape of an ellipse part.  11. Package (30) intended for the packaging of a batch of pasty food products (18), characterized in that it comprises a plurality of devices (10) according to any one of claims 1 to 10, all of said first elements film (22) being from a strip (48) cut from a single sheet, each pair of two adjacent devices (10) being provided with a connecting section (32) belonging to said strip (48) and connecting the one to the other said adjacent devices (10), said connecting section (32) being provided with a transverse pre-cut line (42) allowing the separation between said adjacent devices (10) by tearing the connecting section (32) at said pre-cut line (42).  12. Packaging (30) according to claim 11, characterized in that said devices (10) are placed in a line, said packaging (30) forming a chain delimited by two end devices (10 '), at least said first element film (22) of one of said end devices (10 ') projecting from the first part (12) corresponding to form a label (34).  13. Package (30) according to claim 11, characterized in that said devices (10) are placed in a line, said package (30) forming a chain delimited by two end devices (10 ') of which said first film element protrudes of the corresponding first part (12) in order to form an end section (34.40), said end section (34.40) of each end device (10 ') being shaped so as to be able to cooperate in a reversible manner in order to securing the two ends of said strip (48).  14. Package (30) according to claim 11, characterized in that it comprises a number of devices (10) multiple of six.  15. Use of the packaging device (10) according to any one of claims 1 to 10 or of the packaging (30) according to any one of claims 11 to 14, characterized in that said pasty food product (18) is a pressed cheese.  16. Method for manufacturing a device (10) for packaging a pasty food product (18), forming the first container and the protective case for said product (18), characterized in that it comprises the following steps : -we provide at least one food product; a first and a second sheet (44) of a thermoplastic film are provided; said first and second sheets (44) are deformed by thermoforming, respectively according to first and second complementary impressions (46) each corresponding at least to half of the external face of said product (18) so as to delimit first and second respectively second hollow film elements (22,24), the first impressions (46) made in the first sheet (44) having a slightly larger contour than that of the second impressions made in the second sheet; -injection of a flexible plastic material on the convex outer face of each film element (22,24), so as to form a series of first parts (12) of packaging device from the first film elements (22) and a series second parts (14) of packaging device from the second film elements (24); - said first and second film elements (22,24) forming the interior wall of the housing formed by said first and second parts (12,14) of the packaging device are individually cut, the cutting of said first film elements (22) extending beyond beyond said first part (12) so as to form an opening tab (16) external to said housing and the cutting of said second film elements (24) along the contour of said second device parts (14); a product (18) is placed in each second part (14) of the packaging device; - each second part (14) of the device is closed by covering it with a first part (12) of conditioning device forming a cover by the fact that its free edge (12a) overlaps the free edge (14a) of the second part (14 ) corresponding; and -tightly fixed, by means of temporary connection means, a connection zone (20) of each of said first film element (22) covering the edge of the internal face (12b) of the first part (12) with the edge (14c) of the external face (14d) of the second part (14), said connecting means being capable of breaking under a pulling action on the opening tongue (16).  17. Method for manufacturing a package (30) intended for the packaging of a batch of pasty food products (18), said package (30) comprising an integral assembly of devices (10) each forming the first container and the case protector of one of said products (18), characterized in that it comprises the steps: - at least one food product (18) is supplied; a first sheet (44) of a film is provided; - said sheet (44) is deformed by thermoforming according to imprints (46) corresponding substantially to a portion of the outer face of said product (18) so as to delimit first film elements (22); -a flexible plastic material is injected on the convex outer face of each film element (22,24), so as to form a series of first parts (12) of conditioning device on said strip (48), intended to form a housing for the product (18), the inner wall of which is made up of said film elements; -on is cut, in said sheet (44), at least one strip (48) comprising a series of first parts (12) of device connected together by a connecting section (32); - a line of precuts (42) is produced by pressing a blade on each connecting section (32) of said strip (48) so as to delimit opening tabs (16) external to said corresponding housing; -injection of a flexible plastic material into a mold having a shape complementary to said imprint (46) relative to the external face of the product (18) in order to produce second parts (14) of packaging device, said mold having a contour slightly smaller than the outline of said imprint (46); a product (18) is placed in each second part (14) of; - a strip (48) cut out is positioned on a series of second parts (14) of device aligned so that each first part (12) of device of the strip (48) covers a second part (14) of device, the edge free (12a) of each first part (12) of packaging device overlapping the free edge (14a) of the second part (14) of corresponding packaging device; and -tightly fixed, by means of temporary connection means, a connection zone (20) of each of said first film element (22) covering the edge of the internal face (12b) of the first part (12) of device with the edge (12c) of the external face (12d) of the second part (14) of the corresponding device, said connecting means being capable of breaking under a pulling action on the opening tab (16) of said device corresponding packaging (10).  18. Method for manufacturing a package (30) intended for the packaging of a batch of pasty food products (18), said package (30) comprising an integral assembly of devices (10) each forming the first container and the case protector of one of said products (18), characterized in that it comprises the steps: - at least one food product (18) is supplied; a first and a second sheet (44) of a thermoplastic film are provided; said first and second sheets (44) are deformed by thermoforming, respectively according to first and second complementary impressions (46) each corresponding at least to half of the external face of said product (18) so as to delimit first and second respectively second hollow film elements (22,24), the first impressions (46) made in the first sheet (44) having a slightly larger contour than that of the second impressions made in the second; -injection of a flexible plastic material on the convex outer face of each film element (22,24), so as to form a series of first parts (12) of packaging device from the first film elements (22) and a series second parts (14) of packaging device from the second film elements (24), each first part (12) of device being intended to cooperate with a second part (14) of device to form a housing for the product (18 ), the inner wall of which is made up of said film elements (22, 24); - said second film elements (24) are cut individually from the second sheet; - there is cut, in said first sheet (44), at least one strip (48) comprising a series of first parts (12) of device connected together by a connecting section (32); - a line of pre-cuts (42) is produced by pressing a blade on each connecting section (32) of said strip (48) so as to delimit opening tongues (16) external to said housing; a product (18) is placed in each second part (14) of the device; - a strip (48) cut out is positioned on a series of second parts (14) of device aligned so that each first part (12) of device of the strip (48) covers a second part (14) of device, the edge free (12a) of each first part (12) of packaging device overlapping the free edge (14a) of the second part (14) of corresponding packaging device; and -tightly fixed, by means of temporary connection means, a connection zone (20) of each of said first film element (22) covering the edge of the internal face (12b) of the first part (12) of device with the edge of the external face (12d) of the second part (14) of corresponding device, said connecting means being capable of breaking under a pulling action on the opening tab (16) of said corresponding packaging device .  19. Method according to any one of claims 16 to 18, characterized in that it further comprises the following step: -on coloring is carried out and where the printing of signs on said (said) sheet (s) ) (44) before its (their) deformation by thermoforming, said flexible material being transparent.  20. Method according to any one of claims 16 to 19, characterized in that said first and second film elements (22,24) are made of a material at least partially gas tight.