ES1069175U - Packaging for sandwiches (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Container (1) for sandwiches, consisting of a body formed from a sheet (2) of cardboard that takes the form of a triangular prism, with two triangular end faces (6) joined by rectangular faces, which presents on one of their rectangular faces an opening like a window (3), characterized in that the cardboard sheet (2) is completely covered on one of its sides by a sheet (4) of flexible transparent plastic adhered to it, which also covers the opening as a window (3). (Machine-translation by Google Translate, not legally binding)

Description

Sandwich container.

Field of the Invention

The present invention relates to a container for sandwiches, of the employees to contain them inside so that they are protected and visible from the Exterior.

Background of the invention

Numerous containers or cases are known for sandwiches and snacks, which allow to carry and contain in a way safe inside these foods.

Spanish utility model 260.434 describes a sandwich package with two faces of a rigid laminar nature and a third face defined by a flexible and transparent sheet, in which this flexible and transparent sheet is joined, by glue or heat welding, to the rigid sides of the container by its external surface

Spanish utility model 1030699, referred to also to a sandwich package, it has two walls of semi-rigid laminar nature, one of which, at least, is extends on a flap, and a third wall defined by a sheet flexible and transparent The outer surface of the walls semi-rigid container are also covered by the flexible sheet transparent.

Spanish patents 2198763, for "Containers for food products" and 2288158 ("Package triangular shaped for foodstuff "), describe a container with an elongated rectangular opening in which a transparent film to see the content.

In the Spanish utility model 1016140 ("Case for snacks and similar food products") the case has an elongated face as a loin of the case, of whose major sides leave paths symmetrical triangular faces, which it can have a window-shaped opening, covered by a transparent sheet, which affects the spine of the container and its faces triangular

The Spanish utility model 1067253, by "Sandwich box," describes a package of triangular plant with a transparent window of ends rounded on a rectangular face.

All these proposals describe and represent Sandwich containers that allow them to be contained inside so that they are protected and at the same time visible from the Exterior.

The existence of a window and a sheet that the cover makes the manufacturing process of these containers more complicated, and therefore slower. In addition, these packages can present sealing problems.

Summary of the invention

The object of the present invention is provide a package for sandwiches that are visible from the exterior that is more tight, with a configuration that allows A faster manufacturing process of the container.

The invention provides a container for sandwiches consisting of a body formed from a sheet of cardboard that takes the form of a triangular prism, with two faces triangular ends joined by rectangular faces, which presents on one of its rectangular faces an opening as a window, and in which the cardboard sheet is fully coated on one of its faces by a sheet of transparent plastic flexible adhered to it, which also covers the opening by way of window.

Through this configuration with a face of the cardboard (either internal or external) completely covered by a flexible transparent plastic sheet achieves a improved tightness.

Another advantage is that such configuration allows the plastic covering the window is smooth, without marks or wrinkles

Other advantageous embodiments of the invention they are set forth in the dependent claims.

Brief description of the drawings

It will be illustrated below limiting the object of the present invention, referring to the accompanying drawings, in which:

Figure 1 shows a perspective view front of the sandwich package of the present invention.

Figure 2 shows a perspective view back of the sandwich package of the present invention.

Figure 3 shows a plan view of the unfolded sheet corresponding to a sandwich package of the present invention

Figure 4 shows a perspective view of the sandwich package of the present invention with its lid open

Figure 5 shows a plan view of the sandwich package of the present invention with its lid open

Figures 6A, 6B, 6C and 6D show the stages of the opening of the sandwich package of figures 1 to 5.

Figure 7 shows a perspective view front of another variant of the sandwich package of the present invention.

Figures 8A and 8B show the stages of the opening of the sandwich container of figure 7.

Figure 9 shows a perspective view front of another variant of the sandwich package of the present invention.

Figures 10A and 10B show the stages of the opening of the sandwich container of figure 9.

Figure 11 shows a perspective view front of another variant of the sandwich package of the present invention.

Figures 12A and 12B show the stages of the opening of the sandwich container of figure 11.

Detailed description of the invention

Several figures are shown in Figures 1 to 5 views of the package 1 for sandwiches of the present invention and their components, and in figures 6A to 6D the stages of the opening of said container 1 for sandwiches.

Said container 1 is formed by a sheet 2 of cardboard (whose development is shown in figure 3) that is folded from such that it adopts, in the mounted state, a form of prism triangular, with triangular faces 6 extreme joined by faces rectangular; Figure 1 shows that on one of its faces rectangular there is an opening as a window 3. In the embodiment shown, the cardboard sheet 2 is fully coated inside by a flexible plastic sheet 4 transparent, which is adhered to said sheet 2 of paperboard. The window-like opening 3 is also covered, by inside, by transparent sheet 4 of transparent plastic, so that through said window 3 you can see the inside content of the container 1.

In these figures we also observe that the window 3 will preferably be placed on the rectangular face major 5.

Figure 1 shows the package 1 for sandwiches of the invention according to a front perspective view. We observe that the face 5 that contains the window 3 (and that acts as a cover in this container 1) has a tear-off side strip 10 located longitudinally. The outer face 11 of the side strip 10 is is delimited by two longitudinal lines 12 parallel to medium cut. In Figures 4 and 5 the package 1 for sandwiches is observed of the present invention with its lid open. It is also observed that the inner face 13 of the tear strip 10 has two longitudinal lines 14 parallel to half cut closer between yes that the parallel longitudinal lines 12 of the outer face 11 of the lateral strip 10. Figure 1 also shows a couple of lines lateral transverse 15 to half cut, which delimit 16 side flaps on side 5 containing the opening; a front flap 17 is also observed, adjacent to the longitudinal tear strip 10 on face 5 containing the opening; these flaps 16, 17 have parallel lines 18 to parallel half cut on its inner face, as seen in the Figures 4 and 5.

In said figures 4 and 5 there are also some side flaps 19 protruding from the side edges of the open top of the case and a front flap 20 that protrudes from the front edge of the open top of the case; these flaps have parallel half-cut lines 21 On his upper face.

Figures 6A, 6B, 6C and 6D represent the sequence of the stages of opening the container 1 for sandwiches of figures 1 to 5. We observe that, after holding the strip 10 tear and pull it, it breaks both the cardboard (outside) like plastic (inside), leaving two cuts clean due to lines 14 of half cut that has strip 10 on its inner face 13. The areas adjacent to the opening as well achieved have an irregular appearance of the cardboard, due to partial tearing that occurs in them. Figure 6C shows the final stage of the opening of the container 1, in which the surface containing the opening as a window 3, guided laterally by paths transverse lines 15 at half cut. The flaps (side 16 and front 17) located on face 5 which contains the opening are glued (by adhesive means) to the corresponding flaps 19, 20 protruding from the edges sides of the open top of container 1 (figure 6D). It is also observed that the areas adjacent to the cuts of the side flaps 16 have an irregular appearance of the cardboard, due to the partial tearing that occurs in them.

It would also be possible to configure the container 1 of figures 1 to 6D with the cardboard sheet 2 fully coated on the outside by a flexible plastic sheet 4 transparent, adhered to said cardboard sheet 2. The opening to window mode 3 would also be covered, on the outside, by the 4 transparent sheet of transparent plastic.

The cardboard sheet 2 will be of a material designed for food, and that can provide a barrier against Water, steam or fat. An example of this material would be known commercially as Tecta Base, with a grammage of 220-245 g / m2. Flexible plastic sheet 4 transparent can be made of polypropylene, preferably Bioriented polypropylene or dry polypropylene.

The gluing of the flaps can be done by heat and pressure. To facilitate gluing, the half cuts 18, 21 described in each flap. Said half cuts 18, 21 can be continuous lines, asterisks, puntillés, grids or any geometric figure that facilitates the breakage of the  Polypropylene. As a result of heat, polypropylene retracts and leave the surface of the flaps almost clean. Having the Tecta Base a component that sticks with the heat, the flaps are joined and the case closed (see figures 1 and 2). Without the means cuts would require more temperature and much more time to glue two faces of polypropylene.

The container 1 of the invention can be produced at a rate of about 56,000 units per hour, while prior art containers equipped with windows only they would reach production rates of the order of 3800-4200 units per hour.

In addition, due to its configuration, the container 1 of the invention has improved sealing in all its surface.

Starting from the basic configuration of the container 1, you can make different variants of it by performing modifications, for example, in its opening systems.

Thus, in figure 7 another embodiment of the package 1 for sandwiches of the present invention, and in figures 8A and 8B the stages of opening said container 1 for sandwiches.

In this embodiment the face 5 containing the window 3 further comprises a pair of side strips 22 tear-offs located transversely, each of which it has an external face 23 delimited by two lines transverse 24 parallel to half cut and an inner face 25 that it presents two parallel transversal lines at half cut, more close to each other than the parallel transverse lines 24 of the external face, analogously to the previous embodiment. These strips 22 delimit paths side flaps 27 on face 5 which It contains the opening.

It also comprises a longitudinal line 26 lateral to medium cut that delimits an extreme 28 flap frontal.

These flaps 27, 28 have parallel lines half parallel cut on its inner face.

There are also some side flaps that protrude from the side edges of the top of the rest of container 1 and a front flap protruding from the front edge from the top of the rest of the container 1; these flaps they have parallel mid-cut lines on their upper face.

Figures 8A and 8B represent the sequence of the stages of opening the container 1 for sandwiches of the figures 7. We observe that, after holding each tear strip 22 and pulling she breaks both the cardboard (outer) and the plastic (which is inside), leaving two clean cuts due to the half-cut lines that each strip 22 has on its inner face. The areas adjacent to the opening thus achieved have an appearance irregular cardboard, due to the partial tearing that occurs in they. Figure 8B shows the final stage of the opening of the container 1, on which surface 5 containing the window-like opening 3, guided laterally by a line longitudinal 26 to half cut. The flaps (side 27 and front 28) located on face 5 containing the opening are glued to the corresponding flaps protruding from the edges sides of the top of the rest of the container 1.

Another embodiment is shown in figure 9 of the package 1 for sandwiches of the present invention, and in the Figures 10A and 10B the opening stages of said container 1 for sandwiches

In this embodiment the face 5 containing the window 3 further comprises a tear strip 30 located transversely, which has an external face 31 delimited by two transverse lines 32 parallel to half cut and one face internal 33 which has two transversal lines parallel to medium cut, closer to each other than parallel transverse lines of the outer face 31. Said strip 30 delimits a side flap 35 on face 5 containing the opening.

It also comprises a line 34 at half cut with L-shape that delimits an angular flap 36 with the L-shape of certain width

These flaps 35, 36 have parallel lines half parallel cut on its inner face.

There are also some side flaps that protrude from the side edges of the top of the rest of container 1 and a front flap protruding from the front edge from the top of the rest of the container 1; these flaps they have parallel mid-cut lines on their upper face.

Figures 10A and 10B represent the sequence of the stages of opening the container 1 for sandwiches of the Figure 9. We observe that, after holding the tear strip 30 and pull it, both the cardboard (outer) and the plastic are broken (which is inside), leaving two clean cuts due to the half-cut lines that strip 30 has on its inner face 33. The areas adjacent to the opening thus achieved have an aspect irregular cardboard, due to the partial tearing that occurs in they. Figure 10B shows the final stage of the opening of container 1, on which the surface containing the window-like opening 3, guided by a longitudinal line 34 half-cut in the shape of L. The flaps (lateral 35 and in L 36) located on the face 5 that contains the opening are glued to the corresponding flaps protruding from the side edges from the top of the rest of the container 1.

Preferably, in all embodiments the parallel lines to half cut of the inner face 33 of the strips 30 tear-offs are centered on said faces 33.

Another embodiment is shown in figure 11 of the package 1 for sandwiches of the present invention, and in the Figures 12A and 12B the opening stages of said container 1 for sandwiches

In this embodiment the face 5 containing the window 3 further comprises a tear-off side tab 40 of shorter than that of said face 5 and located on one of its laterally arranged parallel to the greater side, which has a outer face 41 delimited by two lines 42 parallel to half cut and an internal face 43 having two transverse lines parallel to half cut, these two inner lines being smaller distance between them than the exteriors 42. Said face 5 also it comprises a line 44 at half cut with an L shape that delimits an L-shaped angular flap 46 of a certain width, and a line lateral transverse 47 at half cut adjacent to strip 40 tear-off and delimiting a side flap 45.

These flaps 45, 46 have parallel lines half parallel cut on its inner face.

There are also some side flaps that protrude from the side edges of the top of the rest of container 1 and a front flap protruding from the front edge from the top of the rest of the container 1; these flaps they have parallel mid-cut lines on their upper face.

Figures 12A and 12B represent the sequence of the stages of opening the container 1 for sandwiches of the Figure 11. We observe that, after holding the tear-off tab 40 and pull it, both the cardboard (outer) and the plastic are broken (which is inside), leaving two clean cuts due to the Half-cut lines that tab 40 has on its inner face. The areas adjacent to the opening thus achieved have an aspect irregular cardboard, due to the partial tearing that occurs in they. Figure 12B shows the final stage of the opening of the container 1, in which the flange 40 of the surface 5 is pulled containing the opening as a window 3, guided by a line longitudinal 44 to half cut with L-shape and on the other line 47 cross section. The flaps (side 45 and L 46) located on the face 5 that contains the opening are glued to the corresponding flaps protruding from the side edges of the open top of the container 1.

All these embodiments support the container configuration 1 with cardboard sheet 2 completely coated on the outside by a flexible plastic sheet 4 transparent, adhered to said cardboard sheet 2. The opening to window mode 3 would also be covered, on the outside, by the sheet  4 flexible transparent plastic.

Preferably, the lines parallel to medium cut of the inner face 43 of the flange 40 are centered on said face 43.

In all embodiments, the free ends 8 of the strips or tabs can be delimited by two cuts 7 made in the contour of the container 1, in order to facilitate your grip

Although some have been described and represented embodiments of the invention, it is evident that they can be introduced into they are modifications within their scope, not having to be considered limited to such embodiments, but only to the content of the following claims.

Claims (17)

1. Package (1) for sandwiches, consisting of a body formed from a sheet (2) of cardboard that adopts triangular prism shape, with two triangular end faces (6) joined by rectangular faces, which it presents on one of its faces rectangular a window-like opening (3), characterized in that the cardboard sheet (2) is completely covered on one of its faces by a sheet (4) of flexible transparent plastic adhered thereto, which also covers the window-like opening (3). 2. Package (1) for sandwiches according to claim 1, characterized in that the cardboard sheet (2) is completely covered on its inner side by a sheet (4) of transparent transparent plastic adhered thereto, which also covers the inside window opening (3). 3. Package (1) for sandwiches according to claim 1, characterized in that the cardboard sheet (2) is completely covered on its outer face by a sheet (4) of transparent transparent plastic adhered thereto, which also covers on the outside the window opening (3). 4. Package (1) for sandwiches, according to any of the preceding claims, characterized in that the window-like opening (3) is located on the larger rectangular face (5). 5. Package (1) for sandwiches, according to any of the preceding claims, characterized in that the cardboard sheet (2) is of Tecta Base cardboard of 220 to 245 g / m2. 6. Package (1) for sandwiches, according to any of the preceding claims, characterized in that the transparent plastic sheet (4) is made of polypropylene. 7. Package (1) for sandwiches, according to any of the preceding claims, characterized in that the face (5) having a window-like opening (3) comprises two side flaps (16, 27) and one front (17, 28 ), and because of the upper edges of the rest of the package (1), side flaps and a front flap protrude. 8. Package (1) for sandwiches according to claim 7, characterized in that the side flaps (16, 27) and the front flap (17, 28) of the face (5) containing the window (3) have lines ( 18) parallel to half cut on its inner face, and because the side flaps and the front flap that protrude from the upper edges of the rest of the package (1) also have lines parallel to half cut on its upper face. 9. Package (1) for sandwiches according to any of claims 7 and 8, characterized in that the face (5) containing the window (3) further comprises a longitudinally disposable side strip (10), whose outer face (11) It is bounded by two longitudinal lines (12) parallel to half a cut and whose inner face (13) has two longitudinal lines (14) parallel to a half cut, these two inner lines (14) being a smaller distance between them than the outer ones (12 ), and because it also comprises a pair of lateral transverse lines (15) at mid-cut that delimit its two lateral flaps (16). 10. Package (1) for sandwiches, according to any of claims 7 and 8, characterized in that the face (5) containing the window (3) further comprises a pair of laterally disposable strips (22) located transversely, each of the which has an outer face (23) delimited by two transverse lines (24) parallel to half a cut and an inner face (25) that has two transverse lines parallel to a half cut, and because it also comprises a longitudinal line (26) lateral to medium cut that delimits its front flap (28). 11. Package (1) for sandwiches according to any of claims 1 to 6, characterized in that the face (5) having a window-like opening (3) comprises an L-shaped angular flap (36, 46) and a side flap (35, 45), and because of the upper edges of the rest of the package (1) side flaps protrude and a front flap. 12. Package (1) for sandwiches according to claim 11, characterized in that the L-shaped angular flap (36) and the side flap (35) of the face (5) containing the window (3) have parallel lines half-cut on its inner face, and because the side flaps and the front flap protruding from the upper edges of the rest of the container (1) also have lines parallel to half a cut on its upper face. 13. Package (1) for sandwiches, according to any of claims 11 and 12, characterized in that the face (5) containing the window (3) further comprises a transversely tear-off side strip (30), whose outer face (31) It is bounded by two transverse lines (32) parallel to half cut and whose inner face (33) has two transverse lines parallel to half cut, these two inner lines being at a smaller distance between them than the outer ones (32), and because it also comprises an L-shaped half-line (34) that delimits its angular flap (36) in the form of L. 14. Package (1) for sandwiches according to any of claims 11 and 12, characterized in that the face (5) containing the window (3) further comprises a tear-off flange (40) shorter than that of said face (5 ) and located on one of its sides in parallel arrangement to the greater side, whose outer face (41) is delimited by two lines (42) parallel to half cut and whose inner face (43) has two lines parallel to half cut, being these two inner lines at a smaller distance between them than the outer ones (42), and because it also comprises a half-cut line (44) with an L-shape that defines its L-shaped angular flap (46), and a transverse line (47 ) lateral to half cut adjacent to the tear-off tab (40) and delimiting the side flap (45) of the face (5) that contains the window (3). 15. Package (1) for sandwiches according to any of claims 9, 10 or 13, characterized in that the parallel lines half cut from the inner side of the tear strips (10, 22, 30) are centered on said faces. 16. Package (1) for sandwiches according to claim 14, characterized in that the lines parallel to half cut of the inner face (43) of the flange (40) are centered on said face (43). 17. Package (1) for sandwiches, according to any of claims 9, 10, 13 or 14, characterized in that the free ends (8) of the strips (10, 22, 30) or tabs (40) are delimited by two cuts (7) made in the outline of the container (1).