CN216402104U - Packing protective lining and packing carton - Google Patents

Abstract

The utility model provides a packaging protective lining and a packaging box, wherein the packaging protective lining comprises a plate body and a limiting film, the plate body comprises a bottom plate, a first side plate structure and a second side plate structure, the first side plate structure is connected with a first edge of the bottom plate, the second side plate structure is connected with a second edge of the bottom plate, the second edge is arranged opposite to the first edge, and the first side plate structure and the second side plate structure can be folded relative to the bottom plate; one end of the limiting film is connected with at least one part of the first side plate structure, the other end of the limiting film is connected with at least one part of the second side plate structure, and an accommodating area is formed between the limiting film and the first surface; the first side plate structure is matched with the second side plate structure in a clamping mode through the matching effect of the first connecting structure and the second connecting structure. The utility model solves the problem that the film protective lining in the prior art is scattered or even bounced before being placed in the packaging box.

Description

Packing protective lining and packing carton

Technical Field

The utility model relates to the technical field of packaging structures, in particular to a packaging protective lining and a packaging box.

Background

In the film protection packing field, laminating film on the cardboard usually for form the accommodation area who is used for holding the product between film and the cardboard, the rethread turns over a cardboard and stretches tight film, but, because the film has high-elastic tensile force, the existence of product leads to the film protection inside lining to appear scattering or even the phenomenon of popping out before putting into the packing carton, can't ensure that film protection inside lining transmits smoothly to next process and packs the operation.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a packaging protective lining and a packaging box, and aims to solve the problem that a film protective lining in the prior art is scattered or even bounced before being placed in the packaging box.

In order to achieve the above object, according to one aspect of the present invention, there is provided a packaging protective lining, comprising a plate body and a limiting film, wherein the plate body comprises a bottom plate, a first side plate structure and a second side plate structure, the first side plate structure is connected with a first edge of the bottom plate, the second side plate structure is connected with a second edge of the bottom plate, the second edge is opposite to the first edge, and both the first side plate structure and the second side plate structure are arranged in a foldable manner relative to the bottom plate; the limiting film is placed on the first surface of the bottom plate, one end of the limiting film is connected with at least one part of the first side plate structure, the other end of the limiting film is connected with at least one part of the second side plate structure, and an accommodating area is formed between the limiting film and the first surface; the first side plate structure and the second side plate structure can be turned over in the direction back to the first surface and attached to the second surface of the bottom plate; the first side plate structure is provided with a first connecting structure, the second side plate structure is provided with a second connecting structure, and the first side plate structure is matched with the second side plate structure in a clamping manner through the matching of the first connecting structure and the second connecting structure.

Furthermore, the first side plate structure comprises a plurality of first connecting structures which are arranged at intervals, the second side plate structure comprises a plurality of second connecting structures which are arranged in one-to-one correspondence with the first connecting structures.

Furthermore, the first side plate structure comprises a first sub-side plate and a second sub-side plate, wherein one side of the first sub-side plate in the width direction is connected with the first edge, and the first sub-side plate extends along the length direction of the bottom plate; the second sub-side plate is connected with the end part of one end of the first sub-side plate in the length direction, extends along the width direction of the bottom plate and protrudes out of the other side of the first sub-side plate in the width direction, and a first connecting structure is arranged on the second sub-side plate.

Furthermore, the number of the second sub-side plates is two, the two second sub-side plates are respectively connected with the end portions of the two ends of the first sub-side plate in the length direction, the two second sub-side plates and the first sub-side plate enclose a C-shaped structure, the number of the first connecting structures is two, and the two first connecting structures are respectively arranged on the two second sub-side plates.

Further, the second side plate structure comprises a third sub-side plate and a fourth sub-side plate, wherein one side of the third sub-side plate in the width direction is connected with the second edge, and the third sub-side plate extends along the length direction of the bottom plate; the fourth sub-side plate is connected with the end part of one end of the third sub-side plate in the length direction, extends along the width direction of the bottom plate and protrudes out of the other side of the third sub-side plate in the width direction, and a second connecting structure is arranged on the fourth sub-side plate.

Furthermore, the number of the fourth sub-side plates is two, the two fourth sub-side plates are respectively connected with the end portions of the two ends of the third sub-side plate in the length direction, the two fourth sub-side plates and the third sub-side plate form a C-shaped structure, the number of the second connecting structures is two, and the two second connecting structures are respectively arranged on the two fourth sub-side plates.

Further, the second side plate structure comprises a third sub-side plate and a fourth sub-side plate, wherein one side of the third sub-side plate in the width direction is connected with the second edge, and the third sub-side plate extends along the length direction of the bottom plate; the end part of the fourth sub-side plate is connected with the end part of one end of the third sub-side plate in the length direction, the fourth sub-side plate extends to the two sides of the third sub-side plate in the width direction along the width direction of the bottom plate respectively, and a second connecting structure is arranged at one end, far away from the bottom plate, of the fourth sub-side plate.

Furthermore, the number of the fourth sub-side plates is two, the two fourth sub-side plates are respectively connected with the end portions of the two ends of the third sub-side plate in the length direction, the two fourth sub-side plates and the third sub-side plate are enclosed to form an I-shaped structure, the number of the second connecting structures is two, and the two second connecting structures are respectively arranged on the two fourth sub-side plates.

Furthermore, a first crease is formed between the second sub-side plate and the first sub-side plate, a second crease is formed between the fourth sub-side plate and the third sub-side plate, the second sub-side plate can be folded along the first crease in the direction departing from the second surface and is perpendicular to the bottom plate, and the fourth sub-side plate can be folded along the second crease in the direction departing from the second surface and is perpendicular to the bottom plate.

Furthermore, the fourth sub-side plate comprises a first assembling plate section and a second assembling plate section, the first assembling plate section is connected with the end part of one end of the third sub-side plate in the length direction, the first assembling plate section protrudes out of one side of the third sub-side plate far away from the bottom plate, and the second connecting structure is positioned on the first assembling plate section; the second assembling plate section is connected with the first assembling plate section, the second assembling plate section extends along the direction opposite to the first assembling plate section, and a third crease is formed between the second assembling plate section and the first assembling plate section; the two fourth sub-side plates respectively comprise a first assembling plate section and a second assembling plate section, the two second assembling plate sections can be folded inwards along corresponding third creases and are perpendicular to the bottom plate, a third connecting structure is arranged on one of the two second assembling plate sections, a fourth connecting structure is arranged on the other of the two second assembling plate sections, and the two second assembling plate sections are connected with the fourth connecting structure through the cooperation of the third connecting structure and the fourth connecting structure.

Furthermore, the third connecting structure is a convex structure, and the fourth connecting structure is a limiting hole; or the third connecting structure and the fourth connecting structure are both limiting notches.

According to another aspect of the utility model, there is provided a package comprising a package protective liner as described above.

By applying the technical scheme of the utility model, the first connecting structure is arranged on the first side plate structure of the plate body, and the second connecting structure is arranged on the second side plate structure, so that after the first side plate structure and the second side plate structure are turned over in the direction away from the first surface and are attached to the second surface of the bottom plate, the first side plate structure and the second side plate structure are clamped and matched through the matching action of the first connecting structure and the second connecting structure, the phenomenon that the packaging protective lining is scattered or even bounced off is avoided, the packaging protective lining can be ensured to smoothly enter the next procedure for subsequent packaging operation, and the packaging reliability of the packaging box is further ensured.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

fig. 1 is a schematic structural diagram of a plate body of a packaging protective lining according to a first embodiment of the utility model;

fig. 2 is a schematic view showing the bottom panel and the first side panel of the panel body of fig. 1 folded;

fig. 3 is a schematic view illustrating a state in which a second side plate structure of the panel body in fig. 2 is folded;

fig. 4 is a schematic structural view of the first connecting structure of the first side plate structure and the second connecting structure of the second side plate structure of the plate body in fig. 3 in a connecting state;

FIG. 5 is a schematic structural view of the second sub-side plate of the first side plate structure and the fourth sub-side plate of the second side plate structure in the folded state shown in FIG. 4;

FIG. 6 is a schematic view of the second assembled panel section of the fourth sub-side panel of FIG. 5 in a folded configuration;

fig. 7 shows a schematic structural view of the third and fourth connecting structures of the two second mounting plate segments of fig. 6 in a connected state;

fig. 8 is a schematic structural view of a panel body of a packaging protective liner according to a second embodiment of the utility model;

FIG. 9 is a schematic view of the second assembled panel section of the fourth sub-side panel of FIG. 8 in a folded configuration;

fig. 10 shows a schematic structural view of the third connecting structure and the fourth connecting structure of the two second mounting plate segments in fig. 9 in a connected state.

Wherein the figures include the following reference numerals:

10. a plate body; 11. a base plate; 12. a first side panel structure; 121. a first sub-side plate; 122. a second sub-side plate; 1221. a first connecting structure; 13. a second side panel structure; 131. a third sub-side plate; 132. a fourth sub-side plate; 1321. a first mounting plate segment; 1321a, a second connecting structure; 1322. a second mounting plate segment; 1322a, a third connecting structure; 1322b, a fourth connecting structure; 100. a first fold; 200. a second fold; 300. and a third fold.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In order to solve the problem that the film protective lining in the prior art is scattered or even bounced before being placed in a packaging box, the utility model provides a packaging protective lining and a packaging box.

Example one

As shown in fig. 1 to 7, the packaging protective lining includes a plate body 10 and a limiting film, the plate body 10 includes a bottom plate 11, a first side plate structure 12 and a second side plate structure 13, the first side plate structure 12 is connected with a first edge of the bottom plate 11, the second side plate structure 13 is connected with a second edge of the bottom plate 11, the second edge is opposite to the first edge, and both the first side plate structure 12 and the second side plate structure 13 are arranged in a foldable manner relative to the bottom plate 11; the limiting film is placed on the first surface of the bottom plate 11, one end of the limiting film is connected with at least one part of the first side plate structure 12, the other end of the limiting film is connected with at least one part of the second side plate structure 13, and an accommodating area is formed between the limiting film and the first surface; the first side plate structure 12 and the second side plate structure 13 can be folded in a direction away from the first surface and attached to the second surface of the bottom plate 11; the first side plate structure 12 has a first connecting structure 1221 thereon, the second side plate structure 13 has a second connecting structure 1321a thereon, and the first side plate structure 12 is in snap fit with the second side plate structure 13 through the cooperation of the first connecting structure 1221 and the second connecting structure 1321 a.

Set up first connection structure 1221 on the first side panel structure 12 through plate body 10, set up second connection structure 1321a simultaneously on second side panel structure 13, like this, turn over first side panel structure 12 and second side panel structure 13 all to the direction that deviates from the first surface and turn over the book and laminate the back with the second surface of bottom plate 11, cooperation effect through first connection structure 1221 and second connection structure 1321a makes first side panel structure 12 and the cooperation of the joint of second side panel structure 13, the phenomenon of having avoided the packing protection inside lining to appear scattering or even flicking open, thereby ensure that the packing protection inside lining can get into next process smoothly and carry out subsequent packing operation, and then ensure the packing reliability of packing carton.

Optionally, the first side plate structure 12 includes a plurality of first connection structures 1221, the plurality of first connection structures 1221 are disposed at intervals, the second side plate structure 13 includes a plurality of second connection structures 1321a, and the plurality of second connection structures 1321a and the plurality of first connection structures 1221 are disposed in a one-to-one correspondence manner. In this way, the connection reliability of the first side plate structure 12 and the second side plate structure 13 is ensured, so that the first side plate structure 12 and the second side plate structure 13 are prevented from being scattered or even bouncing off.

As shown in fig. 1 to 7, the first side plate structure 12 includes a first sub-side plate 121 and a second sub-side plate 122, wherein the first sub-side plate 121 is connected to the first edge at one side in the width direction, and the first sub-side plate 121 extends along the length direction of the bottom plate 11; the second sub-side plate 122 is connected to an end of one end of the first sub-side plate 121 in the length direction, the second sub-side plate 122 extends along the width direction of the bottom plate 11 and protrudes out of the other side of the first sub-side plate 121 in the width direction, and the second sub-side plate 122 is provided with a first connecting structure 1221. In this way, the structure of the board body 10 is simplified while ensuring reliable connection between the first connection structure 1221 and the second connection structure 1321 a.

As shown in fig. 1 to 7, there are two second sub-side plates 122, the two second sub-side plates 122 are respectively connected to end portions of two ends of the first sub-side plate 121 in the length direction, the two second sub-side plates 122 and the first sub-side plate 121 form a C-shaped structure, the number of the first connecting structures 1221 is two, and the two first connecting structures 1221 are respectively disposed on the two second sub-side plates 122. In this way, the connection reliability of both ends of the first side plate structure 12 and both ends of the second side plate structure 13 is ensured.

In an embodiment of the present application, which is not shown in the drawings, the second side plate structure 13 includes a third sub-side plate 131 and a fourth sub-side plate 132, wherein one side of the third sub-side plate 131 in the width direction is connected to the second edge, and the third sub-side plate 131 extends along the length direction of the bottom plate 11; the fourth sub-side plate 132 is connected to an end of one end of the third sub-side plate 131 in the length direction, the fourth sub-side plate 132 extends along the width direction of the bottom plate 11 and protrudes out of the other side of the third sub-side plate 131 in the width direction, and the fourth sub-side plate 132 is provided with a second connecting structure 1321 a. In this way, the first connecting structure 1221 of the first side plate structure 12 is connected to the second connecting structure 1321a of the second side plate structure 13 on the same side, so that the folded plate body 10 is prevented from being bounced open.

Optionally, there are two fourth sub-side plates 132, the two fourth sub-side plates 132 are respectively connected to end portions of two ends of the third sub-side plate 131 in the length direction, the two fourth sub-side plates 132 and the third sub-side plate 131 enclose a C-shaped structure, the two second connecting structures 1321a are two, and the two second connecting structures 1321a are respectively disposed on the two fourth sub-side plates 132. In this way, the first connecting structures 1221 at the two ends of the first side plate structure 12 are connected to the second connecting structures 1321a at the two ends of the second side plate structure 13, so that the plate body 10 after being turned over is ensured not to be popped open.

As shown in fig. 1 to 7, the second side plate structure 13 includes a third sub-side plate 131 and a fourth sub-side plate 132, wherein one side of the third sub-side plate 131 in the width direction is connected to the second edge, and the third sub-side plate 131 extends along the length direction of the bottom plate 11; the fourth sub-side plate 132 is connected to an end of one end of the third sub-side plate 131 in the length direction, the fourth sub-side plate 132 extends to two sides of the third sub-side plate 131 in the width direction along the bottom plate 11, and a second connecting structure 1321a is disposed at one end of the fourth sub-side plate 132 away from the bottom plate 11.

As shown in fig. 1 to 7, there are two fourth sub-side plates 132, two fourth sub-side plates 132 are respectively connected to the end portions of the two ends of the third sub-side plate 131 in the length direction, the two fourth sub-side plates 132 and the third sub-side plate 131 enclose an i-shaped structure, there are two second connecting structures 1321a, and the two second connecting structures 1321a are respectively disposed on the two fourth sub-side plates 132.

As shown in fig. 1 to 7, a first fold 100 is formed between the second sub-side plate 122 and the first sub-side plate 121, a second fold 200 is formed between the fourth sub-side plate 132 and the third sub-side plate 131, the second sub-side plate 122 can be folded along the first fold 100 in a direction away from the second surface and is perpendicular to the bottom plate 11, and the fourth sub-side plate 132 can be folded along the second fold 200 in a direction away from the second surface and is perpendicular to the bottom plate 11. In this way, the two second sub-side plates 122 and the two fourth sub-side plates 132 are both arranged in a foldable manner.

As shown in fig. 1 to 7, the fourth sub-side plate 132 includes a first assembling plate segment 1321 and a second assembling plate segment 1322, the first assembling plate segment 1321 is connected to an end portion of one end of the third sub-side plate 131 in the length direction, the first assembling plate segment 1321 protrudes from one side of the third sub-side plate 131 far away from the bottom plate 11, and the second connecting structure 1321a is located on the first assembling plate segment 1321; second mounting plate segment 1322 is coupled to first mounting plate segment 1321, and second mounting plate segment 1322 extends in a direction opposite to first mounting plate segment 1321, with third fold 300 between second mounting plate segment 1322 and first mounting plate segment 1321; each of the two fourth sub-side plates 132 includes a first assembling plate 1321 and a second assembling plate 1322, the two second assembling plates 1322 may be folded inward along the corresponding third folding trace 300 and are perpendicular to the bottom plate 11, one of the two second assembling plates 1322 is provided with a third connecting structure 1322a, the other of the two second assembling plates 1322 is provided with a fourth connecting structure 1322b, and the two second assembling plates 1322 are connected by the cooperation of the third connecting structure 1322a and the fourth connecting structure 1322 b. Like this, when first side plate structure 12 and second side plate structure 13 all laminate in the second surface, third connection structure 1322a and fourth connection structure 1322b mutually support and play the further spacing effect to plate body 10 to ensure that the packing protection inside lining of putting the product can not appear scattering or the phenomenon of popping out in the in-process that gets into next packing process, ensure the integrality before packing protection inside lining packing into packing carton.

As shown in fig. 1 to 7, the third connecting structures 1322a are protrusion structures, and the fourth connecting structures 1322b are limiting holes. In this way, the connection reliability of the third connection structure 1322a and the fourth connection structure 1322b is ensured by the cooperation of the protrusion structure and the limiting hole.

Example two

It should be noted that, in the present embodiment, the difference between the present embodiment and the first embodiment is that, as shown in fig. 8 to 10, the third connecting structure 1322a and the fourth connecting structure 1322b are both limiting cutouts. In this way, the connection reliability of the third connection structure 1322a and the fourth connection structure 1322b is ensured through the cooperation of the two limit notches, and meanwhile, the convenience in operation is also ensured.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (12)

1. A packaging protective liner, comprising:

the plate body (10) comprises a bottom plate (11), a first side plate structure (12) and a second side plate structure (13), wherein the first side plate structure (12) is connected with a first edge of the bottom plate (11), the second side plate structure (13) is connected with a second edge of the bottom plate (11), the second edge is opposite to the first edge, and the first side plate structure (12) and the second side plate structure (13) are arranged in a foldable manner relative to the bottom plate (11);

the limiting film is placed on the first surface of the bottom plate (11), one end of the limiting film is connected with at least one part of the first side plate structure (12), the other end of the limiting film is connected with at least one part of the second side plate structure (13), and an accommodating area is formed between the limiting film and the first surface;

the first side plate structure (12) and the second side plate structure (13) can be turned back to the direction away from the first surface and attached to the second surface of the bottom plate (11);

first connection structure (1221) has on first curb plate structure (12), second connection structure (1321a) has on second curb plate structure (13), first curb plate structure (12) pass through first connection structure (1221) with the cooperation of second connection structure (1321a) is in order to with second curb plate structure (13) joint cooperation.

2. The packaging protective liner according to claim 1, wherein the first side panel structure (12) comprises a plurality of the first connecting structures (1221), the plurality of the first connecting structures (1221) are arranged at intervals, the second side panel structure (13) comprises a plurality of the second connecting structures (1321a), and the plurality of the second connecting structures (1321a) are arranged in one-to-one correspondence with the plurality of the first connecting structures (1221).

3. The packaging protective liner according to claim 1, wherein the first side panel structure (12) comprises:

the first sub-side plate (121), one side of the first sub-side plate (121) in the width direction is connected with the first edge, and the first sub-side plate (121) extends along the length direction of the bottom plate (11);

the second sub-side plate (122) is connected with one end of the first sub-side plate (121) in the length direction, the second sub-side plate (122) extends along the width direction of the bottom plate (11) and protrudes out of the other side of the first sub-side plate (121) in the width direction, and the second sub-side plate (122) is provided with the first connecting structure (1221).

4. The packaging protective liner according to claim 3, wherein the number of the second sub-side panels (122) is two, two of the second sub-side panels (122) are respectively connected with the end portions of the two lengthwise ends of the first sub-side panel (121), the two second sub-side panels (122) and the first sub-side panel (121) enclose a C-shaped structure, the number of the first connecting structures (1221) is two, and the two first connecting structures (1221) are respectively arranged on the two second sub-side panels (122).

5. The packaging protective liner according to claim 2, wherein the second side panel structure (13) comprises:

a third sub-side plate (131), wherein one side of the third sub-side plate (131) in the width direction is connected with the second edge, and the third sub-side plate (131) extends along the length direction of the bottom plate (11);

the fourth sub-side plate (132), the fourth sub-side plate (132) is connected with the end of one end of the third sub-side plate (131) in the length direction, the fourth sub-side plate (132) extends along the width direction of the bottom plate (11) and protrudes out of the other side of the third sub-side plate (131) in the width direction, and the second connecting structure (1321a) is arranged on the fourth sub-side plate (132).

6. The protective packaging liner according to claim 5, wherein the number of the fourth sub-side panels (132) is two, two of the fourth sub-side panels (132) are respectively connected with the end portions of the two lengthwise ends of the third sub-side panel (131), the two fourth sub-side panels (132) and the third sub-side panel (131) enclose a C-shaped structure, the number of the second connecting structures (1321a) is two, and two of the second connecting structures (1321a) are respectively arranged on the two fourth sub-side panels (132).

7. The packaging protective liner according to claim 3, wherein the second side panel structure (13) comprises:

a third sub-side plate (131), wherein one side of the third sub-side plate (131) in the width direction is connected with the second edge, and the third sub-side plate (131) extends along the length direction of the bottom plate (11);

the fourth sub-side plate (132), the fourth sub-side plate (132) is connected with the end portion of one end of the third sub-side plate (131) in the length direction, the fourth sub-side plate (132) extends towards two sides of the third sub-side plate (131) in the width direction along the bottom plate (11), and the second connecting structure (1321a) is arranged at one end, far away from the bottom plate (11), of the fourth sub-side plate (132).

8. The protective lining for packaging according to claim 7, wherein there are two fourth sub-side panels (132), two of the fourth sub-side panels (132) are connected to the ends of the two ends of the third sub-side panel (131) in the length direction, the two fourth sub-side panels (132) and the third sub-side panel (131) form an I-shaped structure, there are two second connecting structures (1321a), and two of the second connecting structures (1321a) are respectively disposed on the two fourth sub-side panels (132).

9. The packaging protective liner according to claim 8, wherein the second sub side panel (122) and the first sub side panel (121) have a first fold (100) therebetween, the fourth sub side panel (132) and the third sub side panel (131) have a second fold (200) therebetween, the second sub side panel (122) is foldable in a direction of the first fold (100) away from the second surface and perpendicular to the bottom panel (11), and the fourth sub side panel (132) is foldable in a direction of the second fold (200) away from the second surface and perpendicular to the bottom panel (11).

10. The packaging protective liner according to claim 9, wherein the fourth sub-side panel (132) comprises:

the first assembling plate section (1321), the first assembling plate section (1321) is connected with the end part of one end of the third sub-side plate (131) in the length direction, the first assembling plate section (1321) protrudes out of one side, far away from the bottom plate (11), of the third sub-side plate (131), and the second connecting structure (1321a) is located on the first assembling plate section (1321);

a second assembly plate segment (1322), wherein the second assembly plate segment (1322) is connected with the first assembly plate segment (1321), the second assembly plate segment (1322) is arranged to extend along the direction opposite to the first assembly plate segment (1321), and a third crease (300) is formed between the second assembly plate segment (1322) and the first assembly plate segment (1321);

the two fourth sub-side plates (132) each include the first assembling plate segment (1321) and the second assembling plate segment (1322), the two second assembling plate segments (1322) are foldable inwards along the corresponding third fold (300) and are perpendicular to the bottom plate (11), a third connecting structure (1322a) is arranged on one of the two second assembling plate segments (1322), a fourth connecting structure (1322b) is arranged on the other of the two second assembling plate segments (1322), and the two second assembling plate segments (1322) are connected through the cooperation of the third connecting structure (1322a) and the fourth connecting structure (1322 b).

11. The packaging protective liner of claim 10,

the third connecting structure (1322a) is a convex structure, and the fourth connecting structure (1322b) is a limiting hole; or the like, or, alternatively,

the third connecting structure (1322a) and the fourth connecting structure (1322b) are both limiting notches.

12. A package comprising a package protective liner, wherein the package protective liner is according to any one of claims 1 to 11.

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