Folding corrugated paperboard for oven packaging

Abstract

The present invention relates to a folding corrugated paperboard for oven packaging, comprising a bottom surface, a first shaped surface folded along a first fold and perpendicular to the bottom surface; a second shaped surface folded along a second fold and fitted to the bottom surface; both ends of the bottom surface in the length direction are connected with folding ears through a third fold, the folding ears are folded along the third fold and perpendicular to the bottom surface, the first fold and the second fold are extended to the folding ears, and the folding ears are folded in the same way, and there are gaps between the folding ears and the first and second shaped surfaces; the first shaped surface is also connected with a third shaped surface through a fourth fold on the side away from the bottom surface, the third shaped surface is folded along the fourth fold and matched with the first shaped surface, and then wraps one end of the two folding ears; when the corrugated paperboard body is folded, the second shaped surface, the folding ears and the third shaped surface form a groove structure for wrapping the edge of the oven. The present invention solves the problem that the single-sided corrugated paperboard is thin and cannot effectively buffer and resist pressure, and simplifies the packaging process.

Description

Technical Field

[0001] The invention relates to the technical field of structures for oven packaging, and in particular to a folding corrugated paperboard for oven packaging. Background Art

[0002] At present, EPS, EPP, EPE and other foam plastics are commonly used as cushioning packaging materials for products in the market. With the global attention to environmental pollution, all-paper packaging has become a new trend in product packaging.

[0003] Corrugated paper, also known as kraft paper or paperboard, is a common material for paper packaging boxes. It is lighter than wooden boxes, has more rigidity, and is easy to cut to size. It is used to protect other products being packaged from damage. Corrugated paper can be printed with patterns and texts of different colors or written with text symbols on the outside, and the cost is relatively cheap.

[0004] However, the application of existing corrugated cardboard is limited by product process reasons, and the product protection method is too simple, making it difficult to protect products with complex appearance and structure. Especially for packaging objects such as ovens, which have different edge shapes of different models, if the products are loaded in the outer box without further adaptation structures to separate them, the shaking and impact during logistics transportation will cause product damage and deformation. Since the existing technology uses methods such as gluing, nailing or tape fixing to fix the edges of corrugated cardboard wrapped products, the packaging process is cumbersome. Therefore, it is particularly important to develop a design that can achieve the desired structure by folding. Summary of the invention

[0005] In order to solve the problems existing in the above-mentioned prior art, the present invention aims to provide a foldable corrugated paperboard for oven packaging. The present invention solves the problem that the single-sided corrugated paperboard is too thin to effectively buffer and resist pressure by folding multiple layers, and replaces the fixing method of bonding, nailing or tape in conventional structures, thus simplifying the packaging process.

[0006] The foldable corrugated paperboard for oven packaging of the present invention comprises a rectangular corrugated paperboard body with a length adapted to the oven, the corrugated paperboard body comprising a bottom surface, one side of the bottom surface in the length direction is connected to a first shaped surface through a first fold, the first shaped surface is folded along the first fold and is perpendicular to the bottom surface;

[0007] The other side of the bottom surface in the length direction is connected to a second shaped surface via a second fold, and the second shaped surface is folded along the second fold and fits with the bottom surface;

[0008] Both ends of the bottom surface in the length direction are connected with folded ears through the third fold, the folded ears are folded along the third fold and are perpendicular to the bottom surface, the first fold and the second fold are extended to the folded ears, and the folded ears are folded in the same way, and there are gaps between the folded ears and the first shape surface and the second shape surface;

[0009] The first shaped surface is further connected to a third shaped surface via a fourth fold on one side away from the bottom surface. The third shaped surface is folded along the fourth fold and matched with the first shaped surface to wrap one end of the two folded ears.

[0010] When the corrugated paperboard body is folded, the second shaped surface, the folded ears and the third shaped surface form a groove-shaped structure for wrapping the edge of the oven.

[0011] In one of the embodiments, a groove is provided on a side of the second surface away from the bottom surface, and a first protrusion matched with the groove is provided on the folded ear and the third surface.

[0012] In one embodiment, a rectangular first through hole is provided at the first surface and the fourth fold. When the corrugated cardboard body is folded, the first through hole cooperates with the front side of the third surface to form a notch for placing a grill, and the notch is open along one side of the fourth fold.

[0013] In one embodiment, a rectangular second through hole is provided at the bottom surface and the second fold. When the corrugated cardboard body is folded, the second through hole cooperates with the front side of the second surface to form a notch for placing a grill, and the notch is open along one side of the second fold.

[0014] In one of the embodiments, the folded ear is provided with a third through hole along the first fold, and a second protrusion matched with the third through hole is provided on one side of the folded ear extending in the direction of the second surface.

[0015] In one embodiment, the width of the gap between the folded ear and the second profile surface is consistent with the thickness of the corrugated paperboard body.

[0016] In one embodiment, the width of the gap between the folded ear and the first shaped surface is less than or equal to twice the thickness of the corrugated paperboard body, and the height of the first protrusion is greater than or equal to the thickness of the corrugated paperboard body.

[0017] In one embodiment, the second shaped surface is connected to a fourth shaped surface via a fifth fold on a side away from the bottom surface. When the corrugated paperboard body is unfolded, the groove is located at the fifth fold and forms a fourth through hole. When the corrugated paperboard body is folded, the fourth shaped surface is folded along the fifth fold to fit the fourth shaped surface with the second shaped surface, and is folded again along the second fold to fit the fourth shaped surface with the bottom surface, and the fourth through hole is folded in half to form the groove.

[0018] In one embodiment, a plurality of gaps are left between the first surface and the third surface corresponding to the fourth fold, and the gaps are spaced apart from the fourth fold.

[0019] In one embodiment, the width of the fourth surface is smaller than the width of the second surface.

[0020] In one embodiment, the width of the first surface is greater than the width of the folded ear.

[0021] In one embodiment, the sum of the width of the third surface and the height of the first protrusion is consistent with the width of the first surface.

[0022] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0023] 1. The present invention is simple to use and easy to operate. It solves the problem that the single-sided corrugated cardboard is too thin to effectively buffer and resist pressure by folding multiple layers. At the same time, it replaces the fixing method of bonding, nailing or tape in the conventional structure. The stable structure formed by folding is sufficient to wrap the edge of the oven and assemble into a packaging protection box, which simplifies the packaging process.

[0024] 2. A groove and a first protrusion are arranged at the corresponding position. After folding according to the steps, the groove on the second surface cooperates with the bottom surface to form a slot, and the folding ear and the first protrusion on the third surface can be inserted into the slot, thereby stabilizing the relative position of the folding ear. The corrugated cardboard body is fixed by snapping and clamping to further stabilize the folded structure. No other fixing methods such as gluing, nailing or tape are required, making the packaging process more convenient. You only need to fold the corrugated cardboard body according to the steps and set it aside.

[0025] 3. The first through hole arranged at the first surface and the fourth fold will cooperate with the front side of the third surface to form a gap. When the corrugated cardboard body is placed on the upper and lower edges of the oven, the gap can be used symmetrically up and down to place and insert plate-like parts such as baking nets.

[0026] 4. Through the cooperation of the third through hole and the second protrusion, when folding, the operator can insert the second protrusion into the third through hole to temporarily fix it, and then fold and stand up the folding ear, so that the overlapping surfaces of the folding ear can be close to the two sides of the folded second shape surface, so that the folding operation of the entire corrugated cardboard body can be completed quickly by one person, and no other person needs to press the folding ear to form it manually during the process.

[0027] 5. The corrugated cardboard body is provided with a fourth surface so that the bottom surface, the fourth surface and the second surface overlap in sequence to form a three-layer folding surface, which further increases the buffering and compression resistance of the corrugated cardboard body. In particular, the side surfaces formed are the upper and lower horizontal surfaces used for oven packaging and are easily subjected to pressure from other heavy objects. Therefore, the fourth surface can be added according to actual needs.

[0028] 6. After the corrugated cardboard body is folded, it can be rotated 90 degrees for use, that is, the first shape surface and the third shape surface are used as horizontal surfaces, and the bottom surface, the fourth shape surface and the second shape surface are overlapped in sequence as vertical surfaces. The second through hole is equivalent to the first through hole for placing the grill, and is arranged on the bottom surface accordingly. When in use, the second folds of the folded ears on both sides will face upward or downward to facilitate packaging on the edge of the oven, and some sheet-like protrusions will not be stuck in the folded ears and destroy the shape of the corrugated cardboard body. At the same time, the shape of the folded ears does not need to be matched with the first through hole to set holes and grooves, etc., which can save more processing steps and fit more firmly. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic diagram of the expansion of embodiment 1 of the present invention;

[0030] Figure 2 is a schematic diagram of folding step 1 of embodiment 1 of the present invention;

[0031] Figure 3 is a schematic diagram of folding step 2 of embodiment 1 of the present invention;

[0032] Figure 4 is a schematic diagram of folding step 3 of embodiment 1 of the present invention;

[0033] Figure 5 is a schematic diagram of folding step 4 of embodiment 1 of the present invention;

[0034] Figure 6 is a schematic diagram of folding step 5 of embodiment 1 of the present invention;

[0035] Figure 7 is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0036] Figure 8 is a schematic diagram of the expansion of embodiment 2 of the present invention;

[0037] Fig. 9is a schematic diagram of folding step 1 of embodiment 2 of the present invention;

[0038] Fig.10 is a schematic diagram of folding step 2 of embodiment 2 of the present invention;

[0039] Fig.11 is a schematic diagram of folding step 3 of embodiment 2 of the present invention;

[0040] Fig.12 is a schematic diagram of folding step 4 of embodiment 2 of the present invention;

[0041] Fig.13 is a schematic diagram of folding step 5 of embodiment 2 of the present invention;

[0042] Fig.14 is a schematic diagram of folding step 6 of embodiment 2 of the present invention;

[0043] Fig.15 is a schematic structural diagram of Embodiment 2 of the present invention;

[0044] Fig.16 is a schematic diagram of the assembly of the embodiment 1 and the embodiment 2 of the present invention with an oven when in use;

[0045] Fig.17 is a schematic diagram of the expansion of embodiment 3 of the present invention;

[0046] Fig.18 is a schematic diagram of folding step 1 of embodiment 3 of the present invention;

[0047] Fig.19 is a schematic diagram of folding step 2 of embodiment 3 of the present invention;

[0048] Fig. 20 is a schematic diagram of folding step 3 of embodiment 3 of the present invention;

[0049] Fig.21 is a schematic diagram of folding step 4 of embodiment 3 of the present invention;

[0050] Fig. 22 is a schematic diagram of folding step 5 of embodiment 3 of the present invention;

[0051] Fig.23 is a schematic diagram of folding step 6 of embodiment 3 of the present invention;

[0052] Fig.24 is a schematic diagram of the structure of Embodiment 3 of the present invention;

[0053] Fig.25 It is a schematic diagram of the assembly of the third embodiment of the present invention with an oven when in use.

[0054] Explanation of the reference numerals: 1- oven, 2- corrugated cardboard body, 211- bottom surface, 212- first surface, 213- second surface, 214- folded ear, 215- third surface, 216- fourth surface, 221- first crease, 222- second crease, 223- third crease, 224- fourth crease, 225- fifth crease, 231- groove, 232- first protrusion, 233- first through hole, 234- third through hole, 235- second protrusion, 236- second through hole, 3- baking net. DETAILED DESCRIPTION

[0055] The drawings are only used for illustrative purposes and should not be construed as limitations on this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0056] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. It can be said that the internal connection of two components is connected. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The technical solution of the present invention is further explained below in conjunction with the accompanying drawings and embodiments.

[0057] Example 1

[0058] like Figure 1-Figure 7As shown, a foldable corrugated paperboard for oven packaging of the present invention comprises a rectangular corrugated paperboard body 2 whose length matches that of an oven 1, wherein the corrugated paperboard body 2 comprises a bottom surface 211, wherein one side of the bottom surface 211 in the length direction is connected to a first shaped surface 212 through a first fold 221, wherein the first shaped surface 212 is folded along the first fold 221 and is perpendicular to the bottom surface 211; the other side of the bottom surface 211 in the length direction is connected to a second shaped surface 213 through a second fold 222, wherein the second shaped surface 213 is folded along the second fold 222 and is in contact with the bottom surface 211; both ends of the bottom surface 211 in the length direction are connected to folded ears 214 through a third fold 223, wherein the folded ears 214 are folded along the third fold 223. The three folds 223 are folded and perpendicular to the bottom surface 211, the first fold 221 and the second fold 222 are extended to the folded ears 214, and the folded ears 214 are folded in the same way, and there are gaps between the folded ears 214 and the first and second shaped surfaces 212 and 213; the first shaped surface 212 is also connected to the third shaped surface 215 through the fourth fold 224 on the side away from the bottom surface 211, and the third shaped surface 215 is folded along the fourth fold 224 and matched with the first shaped surface 212, thereby wrapping one end of the two folded ears 214; when the corrugated cardboard body 2 is folded, the second shaped surface 213, the folded ears 214 and the third shaped surface 215 form a groove structure for wrapping the edge of the oven 1.

[0059] The present invention is simple to use and easy to operate. It solves the problem that the single-sided corrugated cardboard is too thin to effectively buffer and resist pressure by folding multiple layers. It also replaces the fixing method of bonding, nailing or tape in conventional structures. The stable structure formed by folding is sufficient to wrap the edge of the oven 1 and assemble into a packaging protection box, thereby simplifying the packaging process.

[0060] In this embodiment, the corrugated paperboard is used as Figure 1 As shown, first unfold the corrugated cardboard body 2, then press Figure 2-Figure 6The second shaped surface 213 and the folded ears 214 are folded 180° along the second fold 222, so that the front side of the second shaped surface 213 is in contact with the front side of the bottom surface 211; then the folded ears 214 on both sides are folded upwards 90° along the third fold 223, so that the folded ears 214 on both sides are perpendicular to the bottom surface 211; then one end of the folded ears 214 is folded inwards 90° along the first fold 221, so that the folded ears 214 just wrap around the two sides and the back side of the second shaped surface 213; the first shaped surface 212 is folded upwards along the first fold 221 Fold 90° so that the front side of the first shape surface is close to the back side of the folded ear 214 and folded to the inner end along the first crease 221; finally, fold the third shape surface 215 180° along the fourth crease 224, the front side of the third shape surface 215 is close to the front side of the inward folded end of the folded ear 214 and pressed into the gap between the folded ear 214 and the second shape surface 213, the third shape surface 215 just cooperates with the first shape surface 212 to wrap the inward folded end of the folded ear 214, and forms a stable groove structure through the limitation of the folded ears 214 on both sides. The back side of the second surface 213, the front side of the folded ear 214 and the back side of the third surface 215 form a rectangular box with openings on both sides, which can be used to fit the edge of the oven 1 to form a buffer to provide protection for the packaged oven 1. Since the corrugated cardboard body 2 is in close contact with the edge of the oven 1 and after the box is packed, the edge of the oven 1 is against the groove, and the third surface 215 is pressed tightly and will not pop out, thereby preventing the folded corrugated cardboard body 2 from spreading out.

[0061] Furthermore, a groove 231 is provided on the side of the second surface 213 away from the bottom surface 211, and a first protrusion 232 matching the groove 231 is provided on the folded ear 214 and the third surface 215. Figure 1 As shown, a groove 231 and a first protrusion 232 are provided at corresponding positions. After folding according to the above steps, the groove 231 on the second surface 213 cooperates with the bottom surface 211 to form a slot, and the folding ear 214 and the first protrusion 232 on the third surface 215 can be inserted into the slot, thereby stabilizing the relative position of the folding ear 214. Moreover, due to the limitation of the first protrusion 232, the third surface 215 is not easy to reset, so that it is clamped at a position perpendicular to the bottom surface 211 to form a groove-shaped structure side. The corrugated cardboard body 2 is further stabilized to form a folded structure by means of buckle clamping and fixing, and no other fixing methods such as bonding, nailing or tape are required, making the packaging process more convenient. It is only necessary to fold the corrugated cardboard body 2 according to the steps and wait for use.

[0062] In this embodiment, a rectangular first through hole 233 is provided at the first shaped surface 212 and the fourth fold 224. When the corrugated cardboard body 2 is folded, the first through hole 233 cooperates with the front of the third shaped surface 215 to form a notch for placing the grill 3, and the notch is open along one side of the fourth fold 224. Figure 7As shown, since the first surface 212 and the third surface 215 wrap one end of the folded ear 214, and the third surface 215 is folded 180° along the fourth fold 224, the first through hole 233 set at the first surface 212 and the fourth fold 224 will cooperate with the front side of the third surface 215 to form a gap. When the corrugated cardboard body 2 is placed on the upper and lower edges of the oven 1, the gap can be used symmetrically up and down, and can be used to place and clamp plate-like parts such as the baking net 3.

[0063] In this embodiment, the gap width between the folded ear 214 and the second shaped surface 213 is consistent with the thickness of the corrugated paperboard body 2. Since the folded ear 214 needs to be folded 180° along the second fold 222, the folded ear 214 will form a double thickness and stand up on both sides of the bottom surface 211, and use its bottom to just contact with the second shaped surface 213 to clamp the second shaped surface 213. With the above-mentioned two grooves 231 and four first protrusions 232, the side surface of the third shaped surface 215 in the thickness direction presses the edge of the second shaped surface 213, so that the second shaped surface 213 can be limited to fit the bottom surface 211, thereby ensuring the folding thickness and buffering performance of the bottom surface 211 on this side. The gap width between the folded ear 214 and the first shaped surface 212 is less than or equal to twice the thickness of the corrugated paperboard body 2, and the height of the first protrusion 232 is greater than or equal to the thickness of the corrugated paperboard body 2. Such a design is to allow the edge of the folded ear 214 close to the first shape surface 212 to be stuck on the second shape surface 213 after the folded ear 214 is folded along the first fold 221 , thereby allowing the first protrusion 232 to be completely stuck in the slot formed by the groove 231 .

[0064] Furthermore, the width of the first shaped surface 212 is greater than the width of the folded ear 214, so that the first shaped surface 212 and the third shaped surface 215 can wrap one end of the folded ear 214, and the height of the folded ear 214 after folding will not break through the fourth fold 224. The sum of the width of the third shaped surface 215 and the height of the first protrusion 232 is consistent with the width of the first shaped surface 212. When the third shaped surface 215 is folded inward and cooperates with the first shaped surface 212 to wrap one end of the folded ear 214, the third shaped surface 215 cannot be too wide to prevent the first protrusion 232 from being unable to be pressed into the groove 231, and after being pressed in, it is just clamped with the bottom surface 211, so that the third shaped surface 215 and the first shaped surface 212 overlap to form a side surface.

[0065] Example 2

[0066] like Figure 8-Figure 15As shown, in this embodiment, different from the embodiment 1, the folding ear 214 is provided with a third through hole 234 along the first fold 221, and the side of the folding ear 214 extending in the direction of the second shaped surface 213 is provided with a second protrusion 235 matched with the third through hole 234. In order to prevent the folding ear 214 from being difficult to fold along the first fold 221 to form an overlapping surface during folding, the third through hole 234 and the second protrusion 235 are matched in this embodiment, so that the second protrusion 235 is inserted into the third through hole 234 to be temporarily fixed, and then the folding ear 214 is folded and erected, so that the overlapping surface of the folding ear 214 can be closely attached to the two sides of the folded second shaped surface 213, so that the folding operation of the entire corrugated board body 2 can be completed quickly by one person, and no other person needs to press the folding ear 214 to form during the process.

[0067] In this embodiment, the folding method is similar to that of the embodiment 1, except that a fourth surface 216 is added and connected to the side of the second surface 213 away from the bottom surface 211 through the fifth fold 225. When the corrugated paperboard body 2 is unfolded, the groove 231 is located at the fifth fold 225 and forms a fourth through hole; when the corrugated paperboard body 2 is folded, the fourth surface 216 is folded along the fifth fold 225, so that the fourth surface 216 is attached to the second surface 213, and folded again along the second fold 222, so that the fourth surface 216 is attached to the bottom surface 211, and the fourth through hole is folded in half to form a groove 231. When folded for use, the fourth surface 216 is preferentially folded to the second surface 213 to form an overlapping surface, and then the corrugated paperboard body 2 is formed in a similar folding method to the embodiment 1. The corrugated cardboard body 2 of this embodiment is provided with a fourth surface 216, so that the bottom surface 211, the fourth surface 216 and the second surface 213 overlap in sequence to form a three-layer folding surface, further increasing the buffering and pressure resistance of the corrugated cardboard body 2, especially for the formed side surface, which is the upper and lower horizontal surfaces for packaging the oven 1 and is easily subjected to pressure from other heavy objects. Therefore, the fourth surface 216 can be added according to actual needs. Furthermore, the width of the fourth surface 216 is smaller than the width of the second surface 213 to ensure that a relatively flat plane is formed after folding, reducing the difficulty of folding.

[0068] In practical applications, such as Fig.16As shown, for packaging protection of the edge of the oven 1, the structure of Example 1 can be placed on both sides of the upper edge of the oven 1, while the structure formed by Example 2 can be placed on both sides of the lower edge of the oven 1, and the two corrugated cardboard bodies 2 are arranged one by one, and the gap formed by the first through hole 233 corresponds to the vertical side, and the grill 3 and other equipment can be placed here. In addition, the structure of Example 2 located below can be increased according to the requirements of the external shape of the oven 1. The jack corresponding to the oven 1 is used for positioning or for adding a reinforcing cardboard to serve as a fixed slot. After the packaging forms a rectangular structure, and the edges are wrapped by the corrugated cardboard body 2 to provide a buffer and pressure resistance effect, the worker can put the entire equipment into the outer box body to complete the packaging of the oven 1 as a whole and parts, which is convenient for later transportation and storage.

[0069] Example 3

[0070] like Figure 17-Figure 25 As shown, in this embodiment, different from the above-mentioned embodiment, the first through hole 233 is cancelled, and a rectangular second through hole 236 is provided at the bottom surface 211 and the second fold 222 to replace the first through hole 233. When the corrugated paperboard body 2 is folded, the second through hole 236 cooperates with the front side of the second surface 213 to form a notch for placing the grill 3, and the notch is open along one side of the second fold 222. In this embodiment, the folding method is consistent with the above two embodiments, and both eventually form the shape as shown in the figure, but when in use, it needs to be flipped 90° relative to the above embodiments, so that the gap formed by the second through hole 236 is located on the vertical surface and can be used to place the baking net 3, that is, the first shape surface 212 and the third shape surface 215 are used as horizontal surfaces, and the bottom surface 211 and the second shape surface 213 are used as vertical surfaces, or the fourth shape surface 216 is added to increase the overall thickness of the vertical surface. The second through hole 236 is equivalent to the first through hole 233 for placing the baking net 3, and is correspondingly arranged on the bottom surface 211. When in use, the second fold 222 of the folded ears 214 on both sides will face upward or downward to facilitate packaging at the edge of the oven 1, and will not cause some sheet-like protrusions to get stuck in the folded ears 214 and destroy the shape of the corrugated cardboard body 2, making it easier to put into the oven 1 equipment. At the same time, the shape of the folded ear 214 along the first fold line 221 does not need to be matched with the first through hole 233 to set a hole and a groove, etc., which can save the processing steps of the folded ear 214 and make it buckled more firmly.

[0071] Furthermore, a plurality of gaps are left between the first shaped surface 212 and the third shaped surface 215 at locations corresponding to the fourth fold 224, and the gaps are arranged at intervals from the fourth fold 224. This arrangement makes the fourth fold 224 no longer a whole fold, but a dotted line. After folding, since the gap is formed by shearing between the two shaped surfaces and there is no arc connection formed by the fold, the slight bulge will limit its reset, thereby maintaining the mutual parallelism of the first shaped surface 212 and the third shaped surface 215. In addition, this feature can also be applied to other folds, so that the shape remains stable after folding and is not easy to reset.

[0072] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application.

[0073] In the figure, the description of the positional relationship is only for illustrative purposes and should not be understood as a limitation on this patent; obviously, the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A folding corrugated paperboard for oven packaging, characterized in that: The invention comprises a corrugated cardboard body (2) which is rectangular and has a length matching that of an oven (1), the corrugated cardboard body (2) comprising a bottom surface (211), one side of the bottom surface (211) in the length direction being connected to a first shaped surface (212) via a first fold (221), the first shaped surface (212) being folded along the first fold (221) and being perpendicular to the bottom surface (211); The other side of the bottom surface (211) in the length direction is connected to a second shaped surface (213) via a second fold (222); the second shaped surface (213) is folded along the second fold (222) and is in contact with the bottom surface (211); Both ends of the bottom surface (211) in the length direction are connected to folded ears (214) via third folds (223); the folded ears (214) are folded along the third folds (223) and are perpendicular to the bottom surface (211); the first folds (221) and the second folds (222) are both extended to the folded ears (214), and the folded ears (214) are folded in the same way; and gaps are left between the folded ears (214) and the first shaped surface (212) and the second shaped surface (213); A side of the first shaped surface (212) away from the bottom surface (211) is also connected to a third shaped surface (215) via a fourth fold (224); the third shaped surface (215) is folded along the fourth fold (224) and matched with the first shaped surface (212), thereby wrapping one end of the two folded ears (214); When the corrugated paperboard body (2) is folded, the second shaped surface (213), the folded ears (214) and the third shaped surface (215) form a groove-shaped structure for wrapping the edge of the oven (1).

2. A folding corrugated paperboard for oven packaging according to claim 1, characterized in that: A groove (231) is provided on a side of the second shaped surface (213) away from the bottom surface (211), and a first protrusion (232) matching the groove (231) is provided on both the folded ear (214) and the third shaped surface (215).

3. A folding corrugated paperboard for oven packaging according to claim 2, characterized in that: A rectangular first through hole (233) is provided at the first shaped surface (212) and the fourth fold (224); when the corrugated paperboard body (2) is folded, the first through hole (233) cooperates with the front side of the third shaped surface (215) to form a notch for placing a grill (3), and the notch is open along one side of the fourth fold (224).

4. The folding corrugated paperboard for oven packaging according to claim 2, characterized in that: A rectangular second through hole (236) is provided at the bottom surface (211) and the second fold (222); when the corrugated paperboard body (2) is folded, the second through hole (236) cooperates with the front surface of the second shaped surface (213) to form a notch for placing a grill (3), and the notch is open along one side of the second fold (222).

5. A folding corrugated paperboard for oven packaging according to claim 3 or 4, characterized in that: The folding ear (214) is provided with a third through hole (234) along the first fold (221), and a second protrusion (235) matching the third through hole (234) is provided on one side of the folding ear (214) extending in the direction of the second shaped surface (213).

6. A folding corrugated paperboard for oven packaging according to claim 5, characterized in that: The width of the gap between the folded ear (214) and the second profile surface (213) is consistent with the thickness of the corrugated paperboard body (2).

7. A folding corrugated paperboard for oven packaging according to claim 6, characterized in that: The width of the gap between the folded ear (214) and the first shaped surface (212) is less than or equal to twice the thickness of the corrugated paperboard body (2), and the height of the first protrusion (232) is greater than or equal to the thickness of the corrugated paperboard body (2).

8. A folding corrugated paperboard for oven packaging according to claim 2 or 3 or 4 or 6 or 7, characterized in that: The side of the second shaped surface (213) away from the bottom surface (211) is connected to a fourth shaped surface (216) via a fifth fold (225); when the corrugated paperboard body (2) is unfolded, the groove (231) is located at the fifth fold (225) and forms a fourth through hole; when the corrugated paperboard body (2) is folded, the fourth shaped surface (216) is folded along the fifth fold (225) so that the fourth shaped surface (216) is in contact with the second shaped surface (213), and is folded again along the second fold (222) so that the fourth shaped surface (216) is in contact with the bottom surface (211), and the fourth through hole is folded in half to form the groove (231).

9. A folding corrugated paperboard for oven packaging according to claim 8, characterized in that: A plurality of gaps are left between the first shaped surface (212) and the third shaped surface (215) at locations corresponding to the fourth fold (224), and the gaps are spaced apart from the fourth fold (224).

10. A folding corrugated paperboard for oven packaging according to claim 9, characterized in that: The width of the fourth surface (216) is smaller than the width of the second surface (213).

11. A folding corrugated paperboard for oven packaging according to claim 10, characterized in that: The width of the first shaped surface (212) is greater than the width of the folded ear (214).

12. A folding corrugated paperboard for oven packaging according to claim 11, characterized in that: The sum of the width of the third surface (215) and the height of the first protrusion (232) is consistent with the width of the first surface (212).

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