Corrugated board and paper pallet

Abstract

The utility model discloses a corrugated board and a paper pallet. A paper pallet comprises a plurality of transverse supporting frames, a plurality of longitudinal supporting frames and a bearing plate. The transverse supporting frame comprises a plurality of transverse foot columns, transverse beams and transverse reinforcing walls. The transverse reinforcing wall extends out of the lower edge of the side wall of the transverse beam and wraps the bottom face and the other side wall of the transverse beam. The longitudinal supporting frame comprises a plurality of longitudinal foot columns, longitudinal beams and longitudinal reinforcing walls. The longitudinal reinforcing wall extends out of the lower edge of the side wall of the longitudinal beam and wraps the bottom face and the other side wall of the longitudinal beam. The longitudinal connecting grooves of the longitudinal supporting frames are clamped on the transverse connecting grooves of the transverse supporting frames, and the longitudinal foot columns and the transverse foot columns comprise tenons which can be combined with mortises of the bearing plate. Corrugated boards forming the paper pallet are also disclosed, the corrugated boards can be assembled into the paper pallet in a simpler mode, and the paper pallet has better bearing capacity.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of storage and transportation, and particularly relates to a corrugated board and a paper pallet. BACKGROUND

[0002] The paper pallet has the advantages of light weight and environmental protection, and can be recycled and made into other paper products. The disadvantage of the paper pallet is insufficient bearing capacity. In order to improve the bearing capacity of the paper pallet, most of the paper pallets currently use a complex structure design, which leads to a complex production and assembly process. Therefore, there is an urgent need for a paper pallet with better bearing capacity and easy assembly. SUMMARY

[0003] The utility model discloses a corrugated board and a paper pallet. The corrugated board can be assembled into a paper pallet in a simpler way, and the paper pallet has better bearing capacity.

[0004] To achieve the above purpose, the utility model provides a corrugated board, according to various embodiments, the corrugated board comprises a first part, a second part and a first fold line, the first fold line spans the corrugated board, and divides the first part and the second part, wherein

[0005] The first part comprises:

[0006] A plurality of first extension parts, each first extension part comprises a first root part and a first top part sequentially extended by the first fold line, the extension direction of each first extension part is substantially perpendicular to the first fold line, the first top part of each first extension part has a first notch, the first notch extends from the first top part to the first root part by a length;

[0007] At least one first crossbeam connecting the first top parts of two adjacent first extension parts; and

[0008] At least one tongue part between two adjacent first extension parts, the tongue part comprises a first tongue plate and a second tongue plate sequentially extended by the first crossbeam towards the second part, wherein the tongue part has a first short fold line and a second short fold line, the first short fold line divides the first tongue plate and the first crossbeam, and the second short fold line divides the first tongue plate and the second tongue plate; and

[0009] The second part comprises:

[0010] a plurality of second extending portions, each of the second extending portions comprising a second root portion and a second top portion sequentially extended from the first fold line, a direction of extension of each of the second extending portions being substantially perpendicular to the first fold line, the second top portion of each of the second extending portions having a second notch extending from the second top portion to the second root portion by a length;

[0011] at least one second cross beam connecting the second top portions of two adjacent second extending portions.

[0012] In some embodiments, wherein each of the first extending portions further comprises a first tongue and a second tongue, the first tongue and the second tongue protruding from the first top portion and located at opposite sides of the first notch respectively, a top length of each of the first tongue and the second tongue being greater than a bottom length of each of the first tongue and the second tongue respectively, and

[0013] wherein each of the second extending portions further comprises a third tongue and a fourth tongue, the third tongue and the fourth tongue protruding from the second top portion and located at opposite sides of the second notch respectively, and a top length of each of the third tongue and the fourth tongue being greater than a bottom length of each of the third tongue and the fourth tongue respectively.

[0014] In some embodiments, wherein the first cross beam comprises a first beam body and a first beam tongue, the first beam body connecting the first top portions of two adjacent first extending portions, the first beam tongue protruding from the first beam body, and

[0015] wherein the second cross beam comprises a second beam body and a second beam tongue, the second beam body connecting the second top portions of two adjacent second extending portions, the second beam tongue protruding from the second beam body.

[0016] In some embodiments, wherein the second tongue plate comprises a connecting portion and a trapezoidal portion sequentially extended from the first tongue plate, a long base of the trapezoidal portion connecting the connecting portion, and a short base and two waists of the trapezoidal portion each being an open side.

[0017] In some embodiments, wherein a length of the short base is less than or substantially equal to a top length of the first beam tongue.

[0018] In some embodiments, wherein a length of the first short fold line is less than a length of the second short fold line.

[0019] In some embodiments, wherein in a direction perpendicular to the first fold line, the first notch and the second notch are substantially connected.

[0020] In some embodiments, the corrugated paperboard further comprises a third portion, a second fold line, a fourth portion, and a third fold line, the third portion is connected to the second portion via the second fold line, and the third portion is substantially mirror-symmetric to the second portion with the second fold line as the axis of symmetry, the fourth portion is connected to the third portion via the third fold line, and the fourth portion is substantially mirror-symmetric to the third portion with the third fold line as the axis of symmetry.

[0021] In some embodiments, the width of the first tongue plate is greater than or substantially equal to 4 times the thickness of the corrugated paperboard, but less than 5 times the thickness of the corrugated paperboard.

[0022] In addition, to achieve the above object, the utility model provides another corrugated paperboard, according to various embodiments, the corrugated paperboard comprises a first portion, a second portion and a first fold line, the first fold line crosses the corrugated paperboard and divides the first portion and the second portion, wherein

[0023] The first portion comprises:

[0024] A plurality of first extension portions, each first extension portion comprises a first root portion and a first top portion sequentially extended by the first fold line, the extension direction of each first extension portion is substantially perpendicular to the first fold line, each first extension portion further comprises a first tenon protruding from the first top portion, wherein the first root portion of each first extension portion has a first slit extending from the first root portion to the first top portion by a length;

[0025] At least one first cross beam connecting the first top portions of two adjacent first extension portions; and

[0026] At least one tongue portion between two adjacent first extension portions, the tongue portion comprises a first tongue plate and a second tongue plate sequentially extended by the first cross beam towards the second portion, wherein the tongue portion has a first short fold line and a second short fold line, the first short fold line divides the first tongue plate and the first cross beam, and the second short fold line divides the first tongue plate and the second tongue plate; and

[0027] The second portion comprises:

[0028] A plurality of second extension portions, each second extension portion comprises a second root portion and a second top portion sequentially extended by the first fold line, the extension direction of each second extension portion is substantially perpendicular to the first fold line, the second root portion of each second extension portion has a second slit extending from the second root portion to the second top portion by a length; and

[0029] at least one second cross beam connecting the second top portion of two adjacent second extension portions.

[0030] In some embodiments, each of the second extension portions further comprises a second tongue protruding from the second top portion.

[0031] In some embodiments, the first cross beam comprises a first beam body connecting the first top portion of two adjacent first extension portions and a first beam tongue protruding from the first beam body, and

[0032] the second cross beam comprises a second beam body connecting the second top portion of two adjacent second extension portions and a second beam tongue protruding from the second beam body.

[0033] In some embodiments, the second tongue plate comprises a connecting portion sequentially extended from the first tongue plate and a trapezoidal portion, a long base of the trapezoidal portion connecting the connecting portion, and a short base and two waists of the trapezoidal portion each being an open edge.

[0034] In some embodiments, the length of the short base is less than or substantially equal to the length of the top of the first beam tongue.

[0035] In some embodiments, the length of the first short fold line is less than the length of the second short fold line.

[0036] In some embodiments, the first slit and the second slit are substantially connected in a direction perpendicular to the first fold line.

[0037] In some embodiments, the corrugated board further comprises a third portion, a second fold line, a fourth portion, and a third fold line, the third portion is connected to the second portion via the second fold line, and the third portion is substantially mirror-symmetric to the second portion with the second fold line as the axis of symmetry, the fourth portion is connected to the third portion via the third fold line, and the fourth portion is substantially mirror-symmetric to the third portion with the third fold line as the axis of symmetry.

[0038] In some embodiments, the width of the first tongue plate is greater than or substantially equal to 4 times the thickness of the corrugated board but less than 5 times the thickness of the corrugated board.

[0039] In addition, to achieve the above object, the utility model further provides a paper pallet, according to various embodiments, the paper pallet comprises:

[0040] a plurality of lateral support frames, each of the lateral support frames being formed by folding corrugated paperboard as described in some of the embodiments described above, wherein each of the lateral support frames comprises a plurality of lateral posts, at least one lateral beam, and at least one lateral reinforcement wall, each of the lateral posts is arranged in a lateral direction with a top portion having a lateral slot, each of the lateral slots has an opening facing upward, the at least one lateral beam extends from a top side of one of the two adjacent lateral posts to a top side of another of the two adjacent lateral posts, the lateral reinforcement wall extends from a lower edge of a side wall of the lateral beam and covers at least a portion of a bottom surface of the lateral beam and at least a portion of another side wall of the lateral beam;

[0041] a plurality of longitudinal support frames, each of the longitudinal support frames being formed by folding corrugated paperboard as described in some of the embodiments described above, each of the longitudinal support frames and each of the lateral support frames intersecting each other and being lapped on each of the lateral support frames, wherein each of the longitudinal support frames comprises a plurality of longitudinal posts, at least one longitudinal beam, and at least one longitudinal reinforcement wall, each of the longitudinal posts is arranged in a longitudinal direction with a bottom portion having a longitudinal slot, each of the longitudinal slots has an opening facing downward, the at least one longitudinal beam extends from a top side of one of the two adjacent longitudinal posts to a top side of another of the two adjacent longitudinal posts, the longitudinal reinforcement wall extends from a lower edge of a side wall of the longitudinal beam and covers at least a portion of a bottom surface of the longitudinal beam and at least a portion of another side wall of the longitudinal beam, wherein each of the longitudinal slots of each of the longitudinal support frames is engaged on each of the lateral slots of each of the lateral support frames, and wherein

[0042] at least one of the longitudinal posts and / or at least one of the lateral posts comprises at least one tongue, at least one of the tongues protruding from a top portion of the corresponding longitudinal post and / or a top portion of the corresponding lateral post; and

[0043] a carrier plate having at least one tongue hole, the carrier plate being connected to the at least one tongue via the at least one tongue hole.

[0044] In some embodiments, wherein the lateral reinforcement wall is formed by the tongue as described in some of the embodiments described above, and the longitudinal reinforcement wall is formed by the tongue as described in some of the embodiments described above.

[0045] In some embodiments, wherein the first tongue plate covers at least a portion of the bottom surface of the lateral beam, and the second tongue plate covers at least a portion of the other side wall of the lateral beam, as described in some of the embodiments described above; and

[0046] wherein the first tongue plate covers at least a portion of the bottom surface of the longitudinal beam and the second tongue plate covers at least a portion of the other sidewall of the longitudinal beam as described in some embodiments above.

[0047] In some embodiments, wherein the transverse beam comprises a beam body and a beam tenon protruding from the beam body, and the longitudinal beam comprises a beam body and a beam tenon protruding from the beam body, wherein the top length of each of the beam tenon and the beam tenon is greater than the top length of the tenon;

[0048] wherein the carrier plate has at least one beam tenon hole and at least one longitudinal beam tenon hole;

[0049] wherein the transverse reinforcing wall is formed by the tongue as described in some embodiments above, and the longitudinal reinforcing wall is formed by the tongue as described in some embodiments above;

[0050] and wherein the second tongue plate and the beam tenon jointly tenon the beam tenon hole as described in some embodiments above, and the second tongue plate and the longitudinal beam tenon jointly tenon the longitudinal beam tenon hole as described in some embodiments above.

[0051] In some embodiments, wherein each of the longitudinal foot column and each of the transverse foot column comprises at least one tenon, and at least one tenon of each of the longitudinal foot column comprises a wide tenon, at least one tenon of each of the transverse foot column comprises a first narrow tenon and a second narrow tenon spaced from each other, and each of the first narrow tenon and the second narrow tenon is located on opposite sides of each of the transverse grooves, respectively, wherein each of the wide tenon of each of the longitudinal foot column and each of the first narrow tenon and the second narrow tenon of each of the transverse foot column jointly form a cross tenon.

[0052] In some embodiments, wherein each of the wide tenon has a top length and a bottom length in the longitudinal direction, and the top length is greater than the bottom length, wherein each of the wide tenon has a sidewall, and the sidewall and the upper surface of the top of the corresponding longitudinal foot column form an acute included angle of 60 degrees to 85 degrees.

[0053] In some embodiments, wherein each of the first and second narrow tenons has a top length and a bottom length in the transverse direction, the top length of each of the first narrow tenons is greater than the bottom length of each of the first narrow tenons, and the top length of each of the second narrow tenons is greater than the bottom length of each of the second narrow tenons, each of the first narrow tenons has opposing first and second side walls, each of the first side walls is substantially coplanar with a side wall of an adjacent one of the transverse slots, each of the second side walls forms an acute included angle of 60 to 85 degrees with an upper surface of the top of a corresponding one of the transverse studs, and wherein each of the second narrow tenons has opposing third and fourth side walls, each of the third side walls is substantially coplanar with another side wall of an adjacent one of the transverse slots, each of the fourth side walls forms an acute included angle of 60 to 85 degrees with an upper surface of the top of a corresponding one of the transverse studs.

[0054] In some embodiments, wherein each of the wide tenons, first narrow tenons, and second narrow tenons has a tenon height, each of the tenon heights is greater than or equal to a thickness of the load bearing plate.

[0055] In some embodiments, wherein each of the wide tenons, first narrow tenons, and second narrow tenons protrude 2 to 6 millimeters above an upper surface of the load bearing plate.

[0056] In some embodiments, wherein a plurality of the transverse studs includes first, second, and third transverse studs, at least one of the transverse beams includes first and second transverse beams, each of the first transverse beams, first transverse studs, and second transverse studs collectively form a first transverse wide slot, and each of the second transverse beams, second transverse studs, and third transverse studs collectively form a second transverse wide slot, wherein a plurality of the longitudinal studs includes first, second, and third longitudinal studs, at least one of the longitudinal beams includes first and second longitudinal beams, each of the first longitudinal beams, first longitudinal studs, and second longitudinal studs collectively form a first longitudinal wide slot, and each of the second longitudinal beams, second longitudinal studs, and third longitudinal studs collectively form a second longitudinal wide slot, wherein each of the first, second, first, and second longitudinal wide slots has a width of 20 to 30 centimeters and a height of 10 to 18 centimeters.

[0057] In some embodiments, wherein each of the transverse and longitudinal studs has substantially the same height.

[0058] In some embodiments, wherein the mortise comprises a circular hole and first, second, third and fourth tenon slots extending radially outward from the circumference of the circular hole, and wherein the radial extension of the first tenon slot is perpendicular to the radial extension of the second tenon slot, the radial extension of the second tenon slot is perpendicular to the radial extension of the third tenon slot, and the radial extension of the third tenon slot is perpendicular to the radial extension of the fourth tenon slot.

[0059] In some embodiments, wherein the beam mortise has opposing first and second sides, the first side is substantially linear, and the second side comprises an arcuate curve such that the width of a substantially middle portion of the beam mortise is greater than the width of the two ends, and the stringer mortise has opposing third and fourth sides, the third side is substantially linear, and the fourth side comprises an arcuate curve such that the width of a substantially middle portion of the stringer mortise is greater than the width of the two ends. BRIEF DESCRIPTION OF DRAWINGS

[0060] Figure 1 is a top view schematic of a corrugated cardboard in some embodiments.

[0061] Figure 2 is a top view schematic of a corrugated cardboard in some embodiments. Figure 1 is a close-up view of the upper right dashed box.

[0062] Figure 3 is a top view schematic of a corrugated cardboard in some embodiments.

[0063] Figure 4 is a top view schematic of a corrugated cardboard in some embodiments. Figure 3 is a close-up view of the upper right dashed box.

[0064] Figure 5 is a perspective view schematic of a process of folding a corrugated cardboard into a longitudinal support frame in some embodiments. Figure 3 is a perspective view schematic of a process of folding a corrugated cardboard into a longitudinal support frame in some embodiments.

[0065] Figure 6 is a schematic view of a longitudinal support frame and a transverse support frame in some embodiments.

[0066] Figure 7 is a top view schematic of a load plate in some embodiments.

[0067] Figure 8 is a schematic view of a process of assembling a paper pallet in some embodiments.

[0068] MAIN REFERENCE NUMERALS EXPLANATION:

[0069] 30: paper pallet

[0070] 40: support frame

[0071] 100, 200: corrugated cardboard

[0072] 101, 201: first portion

[0073] 102, 202: second portion

[0074] 103, 203: third portion

[0075] 104, 204: fourth portion

[0076] 110, 210: first extension

[0077] 112, 212: first root

[0078] 114, 214: first top

[0079] 116: first notch

[0080] 118, 218: first tongue

[0081] 120, 278: second tongue

[0082] 130, 230: first crossbeam

[0083] 132, 232: first beam body

[0084] 134, 234: first beam tongue

[0085] 140, 240: tongue portion

[0086] 142, 242: first tongue plate

[0087] 144, 244: second tongue plate

[0088] 146, 246: connecting portion

[0089] 150, 250: trapezoidal portion

[0090] 152, 252: long base

[0091] 154, 254: short base

[0092] 156, 158, 256, 258: waist

[0093] 160, 260: first short fold line

[0094] 162, 262: second short fold line

[0095] 170, 270: second extension

[0096] 172, 272: second root

[0097] 174, 274: second top

[0098] 176: second notch

[0099] 178: Third tenon

[0100] 180: Fourth tenon

[0101] 190, 290: Second crossbeam

[0102] 192, 292: Second beam body

[0103] 194, 294: Second beam tenon

[0104] 216: First slit

[0105] 276: Second slit

[0106] 301: Horizontal support frame

[0107] 310: Lateral support column

[0108] 310a: First transverse support post

[0109] 310b: Second transverse support post

[0110] 310c: Third transverse support post

[0111] 312, 414: Top

[0112] 314, 416: Top and side

[0113] 316, 418: Upper surface

[0114] 320: Horizontal joint groove

[0115] 322, 422: Opening

[0116] 324, 326, 352, 356, 432, 442, 446: Sidewalls

[0117] 330: First narrow tenon

[0118] 331: First sidewall

[0119] 332: Second sidewall

[0120] 340: Second narrow tenon

[0121] 343: Third sidewall

[0122] 344: Fourth sidewall

[0123] 350: Transverse beam

[0124] 350a: First transverse beam

[0125] 350b: Second transverse beam

[0126] 354, 444: bottom surface

[0127] 360: beam body

[0128] 362: beam tenon

[0129] 371: first lateral wide slot

[0130] 372: second lateral wide slot

[0131] 380: lateral reinforcing wall

[0132] 401: longitudinal support frame

[0133] 410: longitudinal leg

[0134] 410a: first longitudinal leg

[0135] 410b: second longitudinal leg

[0136] 410c: third longitudinal leg

[0137] 412: bottom

[0138] 420: longitudinal slot

[0139] 430: wide tenon

[0140] 440: longitudinal beam

[0141] 440a: first longitudinal beam

[0142] 440b: second longitudinal beam

[0143] 450: longitudinal beam body

[0144] 452: longitudinal beam tenon

[0145] 461: first longitudinal wide slot

[0146] 462: second longitudinal wide slot

[0147] 470: longitudinal reinforcing wall

[0148] 490: cross tenon

[0149] 500: bearing plate

[0150] 510: mortise

[0151] 512: round hole

[0152] 521: first mortise slot

[0153] 522: second mortise slot

[0154] 523: third mortise slot

[0155] 524: fourth tongue groove

[0156] 530: beam tongue hole

[0157] 531: first side

[0158] 532: second side

[0159] 540: stringer tongue hole

[0160] 541: third side

[0161] 542: fourth side

[0162] B1, B3, B5, L1, L3, L5, L6, L8, W1, W3, W5: top length

[0163] B2, B4, B6, L2, L4, L7, L9, L10, W2, W4, W6: bottom length

[0164] B7, E1, E2, E3, E4, W7: width

[0165] D1: first fold line

[0166] D2: second fold line

[0167] D3: third fold line

[0168] F: fluting direction

[0169] H: transverse direction

[0170] P: longitudinal direction DETAILED DESCRIPTION

[0171] Reference is made to Figure 1 and Figure 2 , the corrugated board 100 comprises a first portion 101, a second portion 102 and a first fold line D1. The first fold line D1 spans the corrugated board 100 and divides the first portion 101 and the second portion 102. The first portion 101 comprises a plurality of first extensions 110, such as Figure 1Three first extensions 110 are shown. Each first extension 110 includes a first root 112 and a first top 114 sequentially extending from the first root 112. Each first extension 110 extends substantially perpendicular to the first fold line Dl. The first top 114 of each first extension 110 has a first notch 116 extending from the first top 114 toward the first root 112 by a length. In some embodiments, each first extension 110 further includes a first tab 118 and a second tab 120 protruding from the first top 114, and the first tab 118 and the second tab 120 are respectively located on opposite sides of the first notch 116. In some embodiments, each of the first tab 118 and the second tab 120 has a top length Wl greater than a bottom length W2. Figure 1 Two first crossbeams 130 are shown. Each first crossbeam 130 connects the first top 114 of two adjacent first extensions 110. In some embodiments, each first crossbeam 130 includes a first beam body 132 connecting the first top 114 of two adjacent first extensions 110 and a first beam tab 134 protruding from the first beam body 132. In some embodiments, the first beam tab 134 has a top length W3 less than a bottom length W4. The first portion 101 further includes one or more tongues 140, as shown in FIG. 2. Figure 1 Two tongues 140 are shown. Each tongue 140 includes a first tongue plate 142, a second tongue plate 144, a first short fold line 160, and a second short fold line 162. The first short fold line 160 divides the first tongue plate 142 and the first crossbeam 130, and the second short fold line 162 divides the first tongue plate 142 and the second tongue plate 144. Specifically, the first tongue plate 142 and the second tongue plate 144 sequentially extend from the first crossbeam 130 toward the second portion 102. In some embodiments, each tongue 140 is located between two adjacent first extensions 110. In some embodiments, the first tongue plate 142 has a width W7 greater than or substantially equal to about 4 times a thickness of the corrugated board 100, but less than about 5 times the thickness of the corrugated board 100. In some embodiments, the first short fold line 160 has a length less than a length of the second short fold line 162. In other embodiments, the first short fold line 160 and the second short fold line 162 are substantially parallel to the first fold line Dl. In yet other embodiments, the second tongue plate 144 includes a connecting portion 146 and a trapezoidal portion 150 sequentially extending from the connecting portion 146. The trapezoidal portion 150 has a long bottom edge 152 connected to the connecting portion 146, but a short bottom edge 154 and two sides 156, 158 of the trapezoidal portion 150 are each an open edge. In some embodiments, the short bottom edge 154 has a length less than or substantially equal to the top length W3 of the first beam tab 134.

[0172] The second portion 102 of the corrugated board 100 differs from the first portion 101 in that the second portion 102 does not include the tongue 140. In some embodiments, the second portion 102 of the corrugated board 100 includes a plurality of second extensions 170, each of which includes a second root 172 and a second tip 174 extending from the second root 172 in sequence, and each of the second extensions 170 extends substantially perpendicularly to the first fold line Dl. In some embodiments, the second extensions 170 extend in opposite directions of the first extensions 110 with respect to the first fold line Dl. In addition, the second tip 174 of each of the second extensions 170 has a second notch 176 extending from the second tip 174 to the second root 172 by a length. In some embodiments, the first notch 116 and the second notch 176 are substantially connected in a direction perpendicular to the first fold line Dl. In some embodiments, each of the second extensions 170 further includes a third tenon 178 and a fourth tenon 180, and the third tenon 178 and the fourth tenon 180 protrude from the second tip 174. In addition, the third tenon 178 and the fourth tenon 180 are located on opposite sides of the second notch 176, respectively. In some embodiments, the top length W5 of each of the third tenon 178 and the fourth tenon 180 is greater than the bottom length W6 thereof. In some embodiments, the second portion 102 further includes one or more second cross beams 190, two of which are shown in FIG. 10. The second cross beams 190 connect the second tips 174 of two adjacent second extensions 170. In some embodiments, the second cross beams 190 include a second beam body 192 connecting the second tips 174 of two adjacent second extensions 170 and a second beam tenon 194 protruding from the second beam body 192. In some embodiments, the top length of the second beam tenon 194 is less than the bottom length of the second beam tenon 194, which is the same as or similar to the embodiments described above with respect to the first beam tenon 134. In some embodiments, the second extensions 170 of the second portion 102 and the first extensions 110 of the first portion 101 are mirror images of each other, and the second cross beams 190 of the second portion 102 and the first cross beams 130 of the first portion 101 are mirror images of each other, where the mirror image is with respect to the first fold line Dl as the axis of symmetry. Figure 1

[0173] ​In some embodiments, the corrugated paperboard 100 comprises a corrugated core sandwiched between two flat paperboards. The corrugated core has a wavy structure, and the direction of the parallel ridge or valley lines is defined as the "flute direction". In some embodiments, the flute direction F of the corrugated paperboard 100 is substantially perpendicular to the first fold line D1. In some embodiments, the first fold line D1 is composed of a plurality of separate straight line segments. In some embodiments, the corrugated paperboard 100 further comprises a third portion 103, a second fold line D2, a fourth portion 104, and a third fold line D3. The third portion 103 is connected to the second portion 102 via the second fold line D2, and the third portion 103 is substantially mirror-symmetrical to the second portion 102 with the second fold line D2 as the axis of symmetry. In addition, the fourth portion 104 is connected to the third portion 103 via the third fold line D3, and the fourth portion 104 is substantially mirror-symmetrical to the third portion 103 with the third fold line D3 as the axis of symmetry.

[0174] Please refer to Figure 3 and Figure 4 as well, the corrugated paperboard 200 comprises a first portion 201, a second portion 202, and a first fold line D1. The first fold line D1 crosses the corrugated paperboard 200 and divides the first portion 201 and the second portion 202. The first portion 201 comprises a plurality of first extensions 210, as shown three first extensions 210 in Figure 3 . Each first extension 210 comprises a first root 212 and a first top 214 sequentially extended from the first fold line D1, and the extension direction of each first extension 210 is substantially perpendicular to the first fold line D1. In addition, each first extension 210 further comprises a first tenon 218 protruding from the first top 214. The first root 212 of each first extension 210 has a first slit 216 extending from the first root 212 to the first top 214 by a length. In some embodiments, the top length B1 of the first tenon 218 is greater than the bottom length B2 of the first tenon 218. The first portion 201 further comprises one or more first crossbeams 230, as shown two first crossbeams 230 in Figure 3 . The first crossbeams 230 connect the first tops 214 of two adjacent first extensions 210. In some embodiments, the first crossbeams 230 comprise a first beam body 232 connecting the first tops 214 of two adjacent first extensions 210 and a first beam tenon 234 protruding from the first beam body 232. In some embodiments, the top length B3 of the first beam tenon 234 is less than the bottom length B4 of the first beam tenon 234. The first portion 201 further comprises one or more tongues 240, as shown two tongues 240 in Figure 3Two tabs 240 are depicted. The tabs 240 include a first tab 242, a second tab 244, a first short fold line 260, and a second short fold line 262. The first short fold line 260 divides the first tab 242 from the first beam 230, and the second short fold line 262 divides the first tab 242 from the second tab 244. Specifically, the first tab 242 and the second tab 244 extend sequentially from the first beam 230 in a direction toward the second portion 202. In some embodiments, the tabs 240 are located between two adjacent first extensions 210. In some embodiments, the first tab 242 has a width B7 that is greater than or substantially equal to about 4 times the thickness of the corrugated board 200, but less than about 5 times the thickness of the corrugated board 200. In some embodiments, the first short fold line 260 has a length that is less than the length of the second short fold line 262. In other embodiments, the first short fold line 260 and the second short fold line 262 are substantially parallel to the first fold line Dl. In yet other embodiments, the second tab 244 includes a connecting portion 246 and a trapezoidal portion 250 that extend sequentially. The long base 252 of the trapezoidal portion 250 connects the connecting portion 246, but the short base 254 and the two legs 256, 258 of the trapezoidal portion 250 are each open. In some embodiments, the long base 252 has a length that is less than or substantially equal to the base length B4 of the first beam tenon 234.

[0175] The second portion 202 of the corrugated board 200 differs from the first portion 201 in that the second portion 202 does not include tabs 240. In some embodiments, the second portion 202 of the corrugated board 200 includes a plurality of second extensions 270, each of which includes a second root 272 and a second top 274 that extend sequentially from the first fold line Dl, and each of the second extensions 270 extends substantially perpendicular to the first fold line Dl. In some embodiments, the second extensions 270 extend in a direction opposite to the direction in which the first extensions 210 extend from the first fold line Dl. Furthermore, the second root 272 of each of the second extensions 270 has a second slit 276 that extends from the second root 272 to the second top 274 by a length. In some embodiments, the first slit 216 and the second slit 276 are substantially connected in a direction perpendicular to the first fold line Dl. In some embodiments, each of the second extensions 270 further includes a second tenon 278 that projects from the second top 274. In some embodiments, the second tenon 278 has a top length B5 that is greater than a base length B6. In some embodiments, the second portion 202 further includes one or more second beams 290, such as Figure 3Two second cross beams 290 are shown. The second cross beams 290 connect the second top portions 274 of two adjacent second extension portions 270. In some embodiments, the second cross beams 290 comprise a second beam body 292 connecting the second top portions 274 of two adjacent second extension portions 270 and a second beam tenon 294 protruding from the second beam body 292. In some embodiments, the top length of the second beam tenon 294 is less than the bottom length of the second beam tenon 294, which is the same as or similar to the embodiments described above with respect to the first beam tenon 234. In some embodiments, the second extension portions 270 of the second portion 202 and the first extension portions 210 of the first portion 201 are mirror images of each other, and the second cross beams 290 of the second portion 202 and the first cross beams 230 of the first portion 201 are mirror images of each other, with the first fold line D1 as the axis of symmetry.

[0176] In some embodiments, the corrugated board 200 comprises two opposite flat boards and a corrugated core board sandwiched therebetween, the corrugated core board having a wavy shape with parallel wave crests or troughs, and the direction of the parallel wave crests or troughs is defined as the "flute direction". In some embodiments, the flute direction F of the corrugated board 200 is substantially perpendicular to the first fold line D1. In other embodiments, the first fold line D1 is composed of a plurality of separate straight line segments. In some embodiments, the corrugated board 200 further comprises a third portion 203, a second fold line D2, a fourth portion 204, and a third fold line D3. The third portion 203 is connected to the second portion 202 via the second fold line D2, and the third portion 203 is substantially mirror-symmetric to the second portion 202 with the second fold line D2 as the axis of symmetry. In addition, the fourth portion 204 is connected to the third portion 203 via the third fold line D3, and the fourth portion 204 is substantially mirror-symmetric to the third portion 203 with the third fold line D3 as the axis of symmetry.

[0177] The corrugated board 200 of any of the embodiments described above with respect to Figure 3 and / or Figure 4 may be folded to form a longitudinal support frame. Please refer to Figure 5 and Figure 6 for the folding process. The first portion 201 of the corrugated board 200 is folded along the first fold line D1 towards the second portion 202, and the fourth portion 204 is folded along the third fold line D3 towards the third portion 203. Then, the folded first portion 201 and the second portion 202 are folded in the opposite direction along the second fold line D2 towards the folded third portion 203 and the fourth portion 204, and the structure is pressed together. Finally, the two tongue portions 240 are folded from the bottom to the top to cover the structure, and a Figure 6 longitudinal support frame 401 is obtained. Similarly, the corrugated board 100 of any of the embodiments described above with respect to Figure 1 and / or Figure 2 may be folded in the same or similar manner to form aFigure 6 The depicted cross support frame 301.

[0178] Another aspect of the present application is to provide a paperboard pallet, please refer to Figure 6 、 Figure 7 and Figure 8 , the paperboard pallet 30 comprises a plurality of cross support frames 301, a plurality of longitudinal support frames 401 and a load bearing plate 500. Although Figure 7 three cross support frames 301 and three longitudinal support frames 401 are depicted, the number of cross support frames 301 can be two, four or more. Similarly, the number of longitudinal support frames 401 can be two, four or more. The number of longitudinal support frames 401 can or can not be equal to the number of cross support frames 301.

[0179] Each cross support frame 301 comprises a plurality of cross legs 310, such as a first cross leg 310a, a second cross leg 310b and a third cross leg 310c arranged in a spaced apart manner, the top portion 312 of each cross leg 310 has a cross slot 320, the opening 322 of each cross slot 320 faces upward. Each cross support frame 301 also comprises one or more cross beams 350, such as a first cross beam 350a and a second cross beam 350b. Specifically, the first cross leg 310a, the second cross leg 310b and the third cross leg 310c are connected by the first cross beam 350a and the second cross beam 350b to form the cross support frame 301. The cross beam 350 extends from the top side 314 of one cross leg 310 to the top side 314 of the adjacent other cross leg 310. Each cross support frame 301 also comprises one or more cross reinforcing walls 380. The cross reinforcing wall 380 extends from the lower edge of the side wall 352 of the cross beam 350 and covers part or all of the bottom surface 354 of the cross beam 350, the cross reinforcing wall 380 further extends upward and covers part or all of the other side wall 356 of the cross beam 350. In some embodiments, the side wall 352 of the cross beam 350 and the side wall 356 of the cross beam 350 are opposite to each other. The cross reinforcing wall 380 can greatly increase the ability of the cross support frame 301 to withstand weight. In some embodiments, the cross reinforcing wall 380 is as described above in relation to Figure 1The tongue portion 140 of the corrugated board 100 is configured. The first tongue plate 142 of the tongue portion 140 covers part or all of the bottom surface 354 of the transverse beam 350, and the second tongue plate 144 of the tongue portion 140 covers part or all of the side wall 356 of the transverse beam 350. In some embodiments, the first transverse beam 350a, the first transverse column 310a, and the second transverse column 310b collectively form a first transverse wide slot 371, and the second transverse beam 350b, the second transverse column 310b, and the third transverse column 310c collectively form a second transverse wide slot 372. In some embodiments, the first transverse wide slot 371 and the second transverse wide slot 372 each have a width of about 20 centimeters to about 30 centimeters, and a height of about 10 centimeters to about 18 centimeters.

[0180] The longitudinal support frames 401 and the transverse support frames 301 intersect each other, and the longitudinal support frames 401 are overlapped on the transverse support frames 301 to form the support frame 40. Each longitudinal support frame 401 includes a plurality of longitudinal columns 410, such as a first longitudinal column 410a, a second longitudinal column 410b, and a third longitudinal column 410c. The longitudinal columns 410 are arranged in the longitudinal direction P. The bottom portion 412 of each longitudinal column 410 has a longitudinal slot 420, and the opening 422 of each longitudinal slot 420 faces downward. Each longitudinal slot 420 of the longitudinal support frame 401 is engaged on the transverse slot 320 of the corresponding transverse support frame 301. In some embodiments, each longitudinal column 410 and each transverse column 310 have substantially the same height.

[0181] Each longitudinal support frame 401 also includes one or more longitudinal beams 440, such as a first longitudinal beam 440a and a second longitudinal beam 440b. The longitudinal beam 440 extends from the top side 416 of one longitudinal column 410 to the top side 416 of another longitudinal column 410 adjacent thereto. Each longitudinal support frame 401 also includes one or more longitudinal reinforcing walls 470. The longitudinal reinforcing wall 470 extends from the lower edge of the side wall 442 of the longitudinal beam 440 and covers part or all of the bottom surface 444 of the longitudinal beam 440. The longitudinal reinforcing wall 470 further extends upwardly and covers part or all of the other side wall 446 of the longitudinal beam 440. In some embodiments, the side wall 442 of the longitudinal beam 440 and the side wall 446 of the longitudinal beam 440 are opposite to each other. The longitudinal reinforcing wall 470 can greatly increase the capacity of the longitudinal support frame 401 to bear weight. In some embodiments, the longitudinal reinforcing wall 470 is the front-mentioned reinforcing wall 270. Figure 3The tongue portion 240 of the corrugated board 200 is formed by a first tongue panel 242 of the tongue portion 240 covering part or all of the bottom surface 444 of the longitudinal beam 440 and a second tongue panel 244 of the tongue portion 240 covering part or all of the sidewall 446 of the longitudinal beam 440. In some embodiments, the first longitudinal beam 440a, the first longitudinal leg 410a, and the second longitudinal leg 410b collectively form a first longitudinal wide slot 461, and the second longitudinal beam 440b, the second longitudinal leg 410b, and the third longitudinal leg 410c collectively form a second longitudinal wide slot 462. In some embodiments, the first longitudinal wide slot 461 and the second longitudinal wide slot 462 each has a width of about 20 centimeters to about 30 centimeters and a height of about 10 centimeters to about 18 centimeters.

[0182] In some embodiments, at least one longitudinal leg 410 and / or at least one lateral leg 310 includes at least one tenon protruding from the top portion 414 of the corresponding longitudinal leg 410 and / or the top portion 312 of the corresponding lateral leg 310. In some embodiments, each longitudinal leg 410 and each lateral leg 310 each includes a tenon, such as the wide tenon 430 protruding from the top portion 414 of the longitudinal leg 410. In addition, each lateral leg 310 includes a first narrow tenon 330 and a second narrow tenon 340 spaced apart from each other and located on opposite sides of the lateral slot 320, respectively. In some embodiments, when the longitudinal support frame 401 is overlapped on the lateral support frame 301, the wide tenon 430 of the longitudinal leg 410 and the first narrow tenon 330 and the second narrow tenon 340 of the lateral leg 310 collectively form a cross tenon 490 (indicated in Figure 8 ). In some embodiments, the wide tenon 430 of the longitudinal leg 410 is formed by the first tenon 218 and the second tenon 278 of the corrugated board 200 described above with respect to Figure 3 In some embodiments, the first narrow tenon 330 and the second narrow tenon 340 of the lateral leg 310 are formed by the first tenon 218 and the second tenon 278 of the corrugated board 200 described above with respect to Figure 1The first and second tenons 118, 120 of the corrugated paperboard 100 are configured as described above with respect to the first and second tenons 178, 180 of the corrugated paperboard 100. In some embodiments, each wide tenon 430 has a top length L6 and a bottom length L7 in the longitudinal direction P, and the top length L6 is greater than the bottom length L7. In some embodiments, each wide tenon 430 has a sidewall 432 that forms an acute included angle of about 60 degrees to about 85 degrees with the upper surface 418 of the top 414 of the corresponding longitudinal stud 410. In some embodiments, each first narrow tenon 330 has a top length LI and a bottom length L2 in the transverse direction H. The top length LI of each first narrow tenon 330 is greater than the bottom length L2 of each first narrow tenon 330. Each first narrow tenon 330 has opposing first and second sidewalls 331, 332, each first sidewall 331 being substantially coplanar with the sidewall 324 of the adjacent transverse slot 320, and each second sidewall 332 forming an acute included angle of about 60 degrees to about 85 degrees with the upper surface 316 of the top 312 of the corresponding transverse stud 310. In some embodiments, each second narrow tenon 340 has a top length L3 and a bottom length L4 in the transverse direction H. The top length L3 of each second narrow tenon 340 is greater than the bottom length L4 of each second narrow tenon 340. Each second narrow tenon 340 has opposing third and fourth sidewalls 343, 344, the third sidewall 343 being substantially coplanar with the other sidewall 326 of the adjacent transverse slot 320, and each fourth sidewall 344 forming an acute included angle of about 60 degrees to about 85 degrees with the upper surface 316 of the top 312 of the corresponding transverse stud 310.

[0183] In some embodiments, the transverse beam 350 includes a beam body 360 and a beam tenon 362 that projects from the beam body 360. The top length L5 of the beam tenon 362 is greater than the top length L6 of the wide tenon 430 of the longitudinal support frame 401, the top length LI of the first narrow tenon 330, and the top length L3 of the second narrow tenon 340. In some embodiments, the top length L5 of the beam tenon 362 is less than the bottom length L9 of the beam tenon 362. In some embodiments, the transverse beam 350 is configured as described above with respect to the first and second transverse beams 130, 190 of the corrugated paperboard 100. Figure 1 In some embodiments, the transverse beam 350 includes a beam body 360 and a beam tenon 362 that projects from the beam body 360. The top length L5 of the beam tenon 362 is greater than the top length L6 of the wide tenon 430 of the longitudinal support frame 401, the top length LI of the first narrow tenon 330, and the top length L3 of the second narrow tenon 340. In some embodiments, the top length L5 of the beam tenon 362 is less than the bottom length L9 of the beam tenon 362. In some embodiments, the transverse beam 350 is configured as described above with respect to the first and second transverse beams 130, 190 of the corrugated paperboard 100. Figure 3The first crossbeam 230 and the second crossbeam 290 of the corrugated board 200 are formed.

[0184] Please refer to Figure 6 to Figure 8 The carrier board 500 has at least one mortise hole 510, and the carrier board 500 is connected to the tenon, such as the wide tenon 430, the first narrow tenon 330, and / or the second narrow tenon 340, via the mortise hole 510. In some embodiments, the number and position of the mortise hole 510 correspond to the number and position of the tenon. In some embodiments, the height of each wide tenon 430, each first narrow tenon 330, and each second narrow tenon 340 (i.e., the height of the tenon) is greater than or equal to the thickness of the carrier board 500. In some embodiments, when the paper pallet 30 is assembled, each wide tenon 430, each first narrow tenon 330, and each second narrow tenon 340 protrudes about 2 millimeters to about 6 millimeters above the top surface of the carrier board 500. In some embodiments, each mortise hole 510 includes a circular hole 512 and a first mortise groove 521, a second mortise groove 522, a third mortise groove 523, and a fourth mortise groove 524 extending radially outward from the circumference of the circular hole 512. The radial extension direction of the first mortise groove 521 is perpendicular to the radial extension direction of the second mortise groove 522, the radial extension direction of the second mortise groove 522 is perpendicular to the radial extension direction of the third mortise groove 523, and the radial extension direction of the third mortise groove 523 is perpendicular to the radial extension direction of the fourth mortise groove 524. In some embodiments, the first mortise groove 521, the second mortise groove 522, the third mortise groove 523, and the fourth mortise groove 524 of each mortise hole 510 collectively correspond to a cross tenon 490. In some embodiments, the carrier board 500 also has one or more crossbeam mortise holes 530 that tenon with the crossbeam tenon 362. In some embodiments, the foregoing description of the wide tenon 430, the first narrow tenon 330, and / or the second narrow tenon 340 also applies to the crossbeam tenon 362. Figure 1 and Figure 2 The second tongue plate 144 of the tongue 140 and the crossbeam tenon 362 collectively tenon with the crossbeam mortise hole 530. In detail, the second tongue plate 144 of the tongue 140 forms part of the transverse reinforcing wall 380, thus allowing the transverse reinforcing wall 380 and the crossbeam tenon 362 to collectively tenon with the crossbeam mortise hole 530. In some embodiments, the carrier board 500 also has one or more stringer mortise holes 540 that tenon with the stringer tenon 452. In some embodiments, the foregoing description of the wide tenon 430, the first narrow tenon 330, and / or the second narrow tenon 340 also applies to the stringer tenon 452. Figure 3 and Figure 4The second tongue 244 of the tongue portion 240 and the longitudinal beam tenon 452 cooperatively tenon the longitudinal beam mortise 540. In detail, the second tongue 244 of the tongue portion 240 constitutes a part of the longitudinal reinforcing wall 470, thus making the longitudinal reinforcing wall 470 and the longitudinal beam tenon 452 cooperatively tenon the longitudinal beam mortise 540. In some embodiments, the cross beam mortise 530 has opposite first and second edges 531 and 532, the first edge 531 is substantially straight, and the second edge 532 comprises an arcuate curve, so that the width E1 of the cross beam mortise 530 at a substantially middle portion is greater than the width E2 at two ends. In some embodiments, the longitudinal beam mortise 540 has opposite third and fourth edges 541 and 542, the third edge 541 is substantially straight, and the fourth edge 542 comprises an arcuate curve, so that the width E3 of the longitudinal beam mortise 540 at a substantially middle portion is greater than the width E4 at two ends.

Claims

1. A corrugated paperboard, characterized by: A corrugated paperboard comprising a first portion, a second portion and a first fold line, the first fold line crossing the corrugated paperboard and dividing the first portion and the second portion, wherein the first portion comprises: a plurality of first extensions, each of the first extensions comprises a first root and a first top sequentially extended by the first fold line, an extending direction of each of the first extensions is substantially perpendicular to the first fold line, the first top of each of the first extensions has a first notch extending a length from the first top to the first root; at least one first crossbeam connecting the first top of two adjacent first extensions; and at least one tongue located between two adjacent first extensions, the tongue comprises a first tongue plate and a second tongue plate sequentially extended by the first crossbeam towards the second portion, wherein the tongue has a first short fold line and a second short fold line, the first short fold line divides the first tongue plate and the first crossbeam, the second short fold line divides the first tongue plate and the second tongue plate; and the second portion comprises: a plurality of second extensions, each of the second extensions comprises a second root and a second top sequentially extended by the first fold line, an extending direction of each of the second extensions is substantially perpendicular to the first fold line, the second top of each of the second extensions has a second notch extending a length from the second top to the second root; and at least one second crossbeam connecting the second top of two adjacent second extensions.

2. A corrugated paperboard as defined in claim 1, characterized in that: wherein each of the first extensions further comprises a first tenon and a second tenon, the first tenon and the second tenon protrude from the first top and are respectively located on opposite sides of the first notch, a top length of each of the first tenon and the second tenon is greater than a bottom length of each of the first tenon and the second tenon, and wherein each of the second extensions further comprises a third tenon and a fourth tenon, the third tenon and the fourth tenon protrude from the second top and are respectively located on opposite sides of the second notch, and a top length of each of the third tenon and the fourth tenon is greater than a bottom length of each of the third tenon and the fourth tenon.

3. A corrugated paperboard as defined in claim 1, characterized in that: wherein the first crossbeam comprises a first beam body and a first beam tenon, the first beam body connects the first top of two adjacent first extensions, the first beam tenon protrudes from the first beam body, and wherein the second crossbeam comprises a second beam body and a second beam tenon, the second beam body connects the second top of two adjacent second extensions, the second beam tenon protrudes from the second beam body.

4. A corrugated paperboard as defined in claim 3, characterized in that: wherein the second tongue plate comprises a connecting portion and a trapezoidal portion sequentially extended by the first tongue plate, a long base of the trapezoidal portion connects the connecting portion, a short base and two waists of the trapezoidal portion are each an open side.

5. A corrugated paperboard as defined in claim 4, characterized in that: wherein a length of the short base is less than or substantially equal to a top length of the first beam tenon.

6. A corrugated paperboard as defined in claim 1, wherein: wherein a length of the first short fold line is less than a length of the second short fold line.

7. A corrugated paperboard as defined in claim 1, wherein: wherein the first notch and the second notch are substantially connected in a direction perpendicular to the first fold line.

8. A corrugated paperboard as claimed in any one of claims 1 to 7, characterised in that: Further comprising a third portion, a second fold line, a fourth portion and a third fold line, the third portion is connected to the second portion via the second fold line, and the third portion is substantially mirror-symmetrical to the second portion with the second fold line as the axis of symmetry, the fourth portion is connected to the third portion via the third fold line, and the fourth portion is substantially mirror-symmetrical to the third portion with the third fold line as the axis of symmetry.

9. A corrugated paperboard as defined in claim 8, characterized in that: The width of the first tongue is greater than or substantially equal to 4 times the thickness of the corrugated board but less than 5 times the thickness of the corrugated board.

10. A corrugated paperboard characterized by: Further comprising a first portion, a second portion and a first fold line, the first fold line is across the corrugated board and divides the first portion and the second portion, wherein The first portion comprises: a plurality of first extensions, each of the first extensions comprises a first root and a first top sequentially extended out from the first fold line, the extending direction of each of the first extensions is substantially perpendicular to the first fold line, each of the first extensions further comprises a first tenon protruding from the first top, wherein the first root of each of the first extensions has a first slit extending from the first root to the first top by a length; at least one first beam connecting the first top of two adjacent first extensions; and at least one tongue between two adjacent first extensions, the tongue comprises a first tongue plate and a second tongue plate sequentially extended out from the first beam towards the second portion, wherein the tongue has a first short fold line and a second short fold line, the first short fold line divides the first tongue plate and the first beam, and the second short fold line divides the first tongue plate and the second tongue plate; and The second portion comprises: a plurality of second extensions, each of the second extensions comprises a second root and a second top sequentially extended out from the first fold line, the extending direction of each of the second extensions is substantially perpendicular to the first fold line, the second root of each of the second extensions has a second slit extending from the second root to the second top by a length; and at least one second beam connecting the second top of two adjacent second extensions.

11. A corrugated paperboard as defined in claim 10, characterized in that: Each of the second extensions further comprises a second tenon protruding from the second top.

12. A corrugated paperboard as defined in claim 10, wherein: The first beam comprises a first beam body and a first beam tenon, the first beam body connects the first top of two adjacent first extensions, and the first beam tenon protrudes from the first beam body, and The second beam comprises a second beam body and a second beam tenon, the second beam body connects the second top of two adjacent second extensions, and the second beam tenon protrudes from the second beam body.

13. A corrugated paperboard as defined in claim 12, characterized in that: The second tongue plate comprises a connecting portion and a trapezoidal portion sequentially extended out from the first tongue plate, the long base of the trapezoidal portion connects the connecting portion, and the short base and two sides of the trapezoidal portion are each an open side.

14. A corrugated paperboard as defined in claim 13, characterized in that: The length of the short base is less than or substantially equal to the length of the top of the first beam tenon.

15. A corrugated paperboard as defined in claim 10, wherein: wherein a length of the first short fold line is less than a length of the second short fold line.

16. A corrugated paperboard as defined in claim 10, wherein: wherein the first slit and the second slit are substantially connected in a direction perpendicular to the first fold line.

17. A corrugated paperboard as claimed in any one of claims 10 to 16, characterised in that: further comprising a third portion, a second fold line, a fourth portion and a third fold line, the third portion connecting the second portion via the second fold line, and the third portion being substantially mirror-symmetrical to the second portion with the second fold line as an axis of symmetry, the fourth portion connecting the third portion via the third fold line, and the fourth portion being substantially mirror-symmetrical to the third portion with the third fold line as an axis of symmetry.

18. A corrugated paperboard as defined in claim 17, characterized by: wherein a width of the first tongue is greater than or substantially equal to 4 times a thickness of the corrugated board, but less than 5 times the thickness of the corrugated board.

19. A paperboard carton characterized by: comprising: a plurality of lateral support frames, each of the lateral support frames being formed by the corrugated board fold according to any one of claims 1 to 9, wherein each of the lateral support frames comprises a plurality of lateral columns, at least one lateral beam and at least one lateral reinforcing wall, the lateral columns are arranged in a lateral direction, a top portion of each of the lateral columns has a lateral slot, an opening of each of the lateral slots faces upward, the at least one lateral beam extends from a top side of one of the lateral columns to a top side of another of the lateral columns, the lateral reinforcing wall extends from a lower edge of one side wall of the lateral beam and covers at least a portion of a bottom surface of the lateral beam and at least a portion of another side wall of the lateral beam; a plurality of longitudinal support frames, each of the longitudinal support frames being formed by the corrugated board fold according to any one of claims 10 to 18, each of the longitudinal support frames and each of the lateral support frames intersect with each other and are lapped on each of the lateral support frames, wherein each of the longitudinal support frames comprises a plurality of longitudinal columns, at least one longitudinal beam and at least one longitudinal reinforcing wall, the longitudinal columns are arranged in a longitudinal direction, a bottom portion of each of the longitudinal columns has a longitudinal slot, an opening of each of the longitudinal slots faces downward, the at least one longitudinal beam extends from a top side of one of the longitudinal columns to a top side of another of the longitudinal columns, the longitudinal reinforcing wall extends from a lower edge of one side wall of the longitudinal beam and covers at least a portion of a bottom surface of the longitudinal beam and at least a portion of another side wall of the longitudinal beam, wherein each of the longitudinal slots of each of the longitudinal support frames is engaged on each of the lateral slots of each of the lateral support frames, and wherein at least one of each of the longitudinal columns and / or at least one of each of the lateral columns comprises at least one tenon, the at least one tenon protrudes from a top portion of the corresponding longitudinal column and / or a top portion of the corresponding lateral column; and a bearing plate having at least one mortise, the bearing plate is connected to the at least one tenon via the at least one mortise.

20. A paperboard carton according to claim 19, wherein: wherein each of the longitudinal leg posts and each of the transverse leg posts comprises at least one of the tenons, and at least one of the tenons of each of the longitudinal leg posts comprises a wide tenon, at least one of the tenons of each of the transverse leg posts comprises a first narrow tenon and a second narrow tenon spaced apart from each other, and each of the first narrow tenon and the second narrow tenon is located on opposite sides of each of the transverse slots, wherein each of the wide tenon of each of the longitudinal leg posts and each of the first narrow tenon and the second narrow tenon of each of the transverse leg posts collectively forms a cross tenon.

21. A paperboard carton according to claim 20, wherein: wherein each of the wide tenons has a top length and a bottom length in the longitudinal direction, and the top length is greater than the bottom length, wherein each of the wide tenons has a side wall that forms an acute included angle of 60 degrees to 85 degrees with an upper surface of the top of the corresponding longitudinal leg post.

22. A paperboard carton according to claim 20, wherein: wherein each of the first narrow tenon and the second narrow tenon has a top length and a bottom length in the transverse direction, the top length of each of the first narrow tenon is greater than the bottom length of each of the first narrow tenon, and the top length of each of the second narrow tenon is greater than the bottom length of each of the second narrow tenon, each of the first narrow tenon has opposite first and second side walls, each of the first side walls is substantially coplanar with a side wall of the adjacent each of the transverse slots, each of the second side walls forms an acute included angle of 60 degrees to 85 degrees with an upper surface of the top of the corresponding transverse leg post, and wherein each of the second narrow tenon has opposite third and fourth side walls, each of the third side walls is substantially coplanar with another side wall of the adjacent each of the transverse slots, each of the fourth side walls forms an acute included angle of 60 degrees to 85 degrees with an upper surface of the top of the corresponding transverse leg post.

23. A paperboard stack as claimed in any one of claims 20-22, characterized by: wherein each of the wide tenon, each of the first narrow tenon, and each of the second narrow tenon has a tenon height, and each of the tenon height is greater than or equal to a thickness of the load bearing plate.

24. A paperboard carton according to claim 23, wherein: wherein each of the wide tenon, each of the first narrow tenon, and each of the second narrow tenon protrudes 2 millimeters to 6 millimeters above an upper surface of the load bearing plate.

25. A paperboard carton according to claim 19, wherein: Wherein a plurality of the lateral columns comprises a first lateral column, a second lateral column and a third lateral column, at least one of the lateral beams comprises a first lateral beam and a second lateral beam, each of the first lateral beams, each of the first lateral columns and each of the second lateral columns collectively form a first lateral wide slot, and each of the second lateral beams, each of the second lateral columns and each of the third lateral columns collectively form a second lateral wide slot, wherein a plurality of the longitudinal columns comprises a first longitudinal column, a second longitudinal column and a third longitudinal column, at least one of the longitudinal beams comprises a first longitudinal beam and a second longitudinal beam, each of the first longitudinal beams, each of the first longitudinal columns and each of the second longitudinal columns collectively form a first longitudinal wide slot, and each of the second longitudinal beams, each of the second longitudinal columns and each of the third longitudinal columns collectively form a second longitudinal wide slot, wherein each of the first lateral wide slots, each of the second lateral wide slots, each of the first longitudinal wide slots and each of the second longitudinal wide slots has a width of 20 centimeters to 30 centimeters, and each of the first lateral wide slots, each of the second lateral wide slots, each of the first longitudinal wide slots and each of the second longitudinal wide slots has a height of 10 centimeters to 18 centimeters.

26. A paperboard carton according to claim 19 or 25, characterised in that: Wherein each of the lateral columns and each of the longitudinal columns has substantially the same height.

27. A paperboard carton according to claim 19, wherein: Wherein the mortise comprises a circular hole and a first tenon slot, a second tenon slot, a third tenon slot and a fourth tenon slot radially extending outwards from a circumference of the circular hole, and wherein a radial extension direction of the first tenon slot is perpendicular to a radial extension direction of the second tenon slot, the radial extension direction of the second tenon slot is perpendicular to a radial extension direction of the third tenon slot, and the radial extension direction of the third tenon slot is perpendicular to a radial extension direction of the fourth tenon slot.

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