WO2023142461A1

WO2023142461A1 - Buffer pad and packaging bag

Info

Publication number: WO2023142461A1
Application number: PCT/CN2022/114057
Authority: WO
Inventors: 阎金伟
Original assignee: 成泰昌包装制品(深圳)有限公司; 惠州市成泰昌新材料科技有限公司
Priority date: 2022-08-22
Filing date: 2022-08-22
Publication date: 2023-08-03
Also published as: JP2024509324A; EP4306440A1; AU2022436769A1

Abstract

A buffer pad (100, 300). The buffer pad comprising at least one pad unit (10, 30). The pad unit (10, 30) comprising at least one die cutting region (12, 320). When the die cutting region (12, 320) is unfolded, the length increases. The die cutting region (12, 320) unfolds to form a buffer layer. The buffer layer enables the second surface (32) to expand in the thickness direction, so as to have a buffering and protecting effect. After the die-cutting region (12, 320) is unfolded, a three-dimensional grid structure is formed. Further disclosed is a packaging bag (200, 400) manufactured with the pad units. The packaging bag (200, 400) is of a planar structure after being manufactured. When the packaging bag (200, 400) is used after transportation, the buffer pad(100, 300) is expanded to form a buffer layer (14, 321) by means of placing an object thereon or being under a pushing force, so that the loaded object is protected, and the transportation cost can be saved. When in use, the buffer pad (100, 300) can be expanded by placing an object thereon or stretching, the buffer pad (100, 300) can be used as a buffering material to fill or wrap an object, and the packaging bag is used for holding an object.

Description

A kind of buffer liner and packing bag

technical field

The invention relates to the field of express packaging, in particular to a cushioning pad and a packaging bag made of the cushioning pad.

Background technique

In the field of packaging, the cushioning pad mainly serves the purpose of protecting the packaged items, and the cushioning pad needs to have a cushioning function. For example, structures such as existing gas-filled bubbles. The cushioning pad can play a buffering role because the cushioning pad has a cushioning effect in the thickness direction, but the thickness of the cushioning pad is relatively large. At this time, the transportation cost is the main reason that seriously restricts the cost of the cushioning pad. When the cushioning pad or the packaging bag made of the cushioning pad is transported to other countries and regions, the thickness of the cushioning pad is relatively large, resulting in the loss of the cushioning pad. Increased bulk, larger bulky cushioning pads and bags will pay more for shipping. Die-cut paper or the die-cut area on the paper is mainly formed by cutting the paper material by die-cutting to form different structures of cuts, and then applying external force on the cuts, which can make the cuts stretch and wrinkle into three-dimensional Mesh structure, the three-dimensional mesh structure can play a buffering and protective role.

At present, the materials wrapped on the outer surface of the object and directly play a cushioning role mainly include: bubble film structure, plastic foam, etc. These materials are not environmentally friendly. Of course, the three-dimensional network structure after stretching the die-cut paper can also be directly wrapped on the outer surface of the object to play a buffer role, but the die-cut paper needs to be stretched, and most of the stretching process is manual stretching. During the stretching process, because the tension point is on the hand, the force is not uniform, and it is easy to cause only one part of the die-cut paper to be stretched and the other part not to be stretched; or when the die-cut paper is stretched because the tension is too large In case of damage.

Of course, you can also use die-cut paper to make packaging bags. At present, the packaging bags made of die-cut paper are mainly: the three-dimensional network structure after the die-cut paper is stretched is arranged in the paper outer bag body, and the three-dimensional network structure is pasted on the inner wall of the outer bag body. In this way, on the one hand, it can ensure that the packaging bag is made of paper as a whole, reducing environmental pollution, and on the other hand, it can ensure the cushioning effect of the packaging bag. However, the thickness of the finished packaging bag is relatively large, and it is difficult to reduce the transportation cost; at the same time, the die-cut paper needs to be fixed on the inner wall of the outer bag with a three-dimensional mesh structure after stretching, and the die-cut paper needs to be stretched during production. On the other hand, the specific structure that needs to maintain the three-dimensional network structure is fixed in the outer bag body, and the manufacturing process is relatively complicated.

Contents of the invention

The purpose of the present invention is to provide a cushion pad, aiming to solve the technical problems in the background art.

The present invention provides a buffer pad, the buffer pad is made of paper material, the buffer pad includes at least one pad unit, each of the pad units includes at least one third surface, and The third surface includes a die-cutting area and a transfer area, the transfer area is located at the center of the third surface, and the transfer area is a strip-shaped area arranged along the width direction of the third surface; the die-cutting The transfer area is located on one side of the transfer area; the transfer area is used to transmit tensile force to the die-cut area, so that the die-cut area is expanded, and the expanded die-cut area forms a cushioning layer, the The buffer layer makes the third surface expand in the thickness direction, so as to play the role of buffer protection.

The present invention also discloses another cushioning pad, wherein the cushioning pad is made of paper material, the cushioning pad includes at least one pad unit, and each pad unit includes:

The first surface, the first surface is provided with at least one extension area, the extension area can be expanded along the length direction of the first surface, and the length of the first surface increases after the expansion area is expanded;

At least one layer of second surface, the two ends of the length direction of the second surface are respectively fixed to the two ends of the first surface, the second surface is provided with a die-cutting area, the length of the die-cutting area varies with The extension area increases when it is expanded; the die-cut area is expanded to form a buffer layer, and the buffer layer causes the second surface to expand in the thickness direction to play a buffering and protective role; after the die-cut area is expanded Form a three-dimensional grid structure.

After the liner unit of the present invention is stretched and unfolded by external force, the third surface expands in the thickness direction, which can be used as a cushioning material and wrapped on the surface of the article; and the cushioning liner can be degraded after use as a paper material. Environmental protection; when the cushioning pad is made into a flat shape, it will unfold into a three-dimensional network structure after transportation and use. The transportation of the flat shape can save transportation costs compared with the transportation of three-dimensional larger volume products.

The present invention additionally discloses a packaging bag made of a pad unit, the packaging bag comprising:

outer bag;

As for the cushion unit, the cushion unit is disposed in the outer bag body along the length direction, and the two sides of the liner unit in the width direction are not connected to the outer bag body;

When the packing bag is put into the object, the putting direction is consistent with the length direction of the cushion unit, and the cushion unit is unfolded along the putting direction and expands in the thickness direction of the cushion unit, thereby to buffer protection.

The packaging bag disclosed by the present invention is made by using the liner unit. After the packaging bag is made, it has a planar structure, which can save costs during transportation with the planar structure; Or the thrust when putting in the item can make the inner pad unit unfold to form a three-dimensional mesh structure cushioning layer, and the cushioning layer makes the packaging bag have a cushioning effect; the packaging bag does not need to make the cushioning layer in the shape of a three-dimensional mesh structure Inside the packaging bag, the manufacturing process is relatively simple; and the bag body can form a cushioning layer by putting in items, and the use of the packaging bag is relatively simple.

Description of drawings

Fig. 1 is the structural representation of liner unit;

Fig. 2 is a schematic structural view of the cushion unit of the present invention after being deployed;

Fig. 3 is a schematic structural view of the buffer pad;

Fig. 4 is the structural representation of packing bag;

Fig. 5 is a side sectional view of a packaging bag made of the pad unit of Fig. 1;

Fig. 6 is a top sectional view of a packaging bag made of the pad unit of Fig. 1;

Fig. 7 is a schematic structural diagram of another liner unit;

Fig. 8 is a schematic diagram showing the expansion of the liner unit in Fig. 7;

Fig. 9 is a schematic structural view of the buffer pad made by the pad unit in Fig. 7;

Fig. 10 is a side sectional view of a packaging bag made of the liner unit of Fig. 7;

Fig. 11 is a top sectional view of the packaging bag made by the pad unit of Fig. 7;

Fig. 12 is a structural schematic diagram of another liner unit;

Fig. 13 is a schematic structural view of the buffer pad made by the pad unit of Fig. 12;

Fig. 14 is a side sectional view of a packaging bag made of the liner unit of Fig. 12;

Fig. 15 is a structural schematic diagram of another liner unit;

Fig. 16 is a structural schematic diagram of another liner unit;

Fig. 17 is a schematic structural view of the buffer pad made by the pad unit of Fig. 16;

Fig. 18 is a structural schematic diagram of another liner unit;

Fig. 19 is a schematic diagram of the structure of the first surface of the pad unit;

Fig. 20 is a schematic diagram of another first surface structure of the pad unit;

Fig. 21 is a schematic diagram of the structure of the liner unit in Fig. 16;

Fig. 22 is a schematic diagram of the expanded structure of the pad unit in Fig. 21;

Fig. 23 is a side sectional view of the packaging bag in which the cushion unit of Fig. 21 is not unfolded;

Figure 24 is a side cross-sectional view of the packaging bag with the liner unit of Figure 21 deployed;

Fig. 25 is a top sectional view of the packaging bag expanded in Fig. 21;

Fig. 26 is a schematic structural view of the packaging bag made by the pad unit in Fig. 21;

Fig. 27 is a schematic structural view of an unexpanded packaging bag made of another cushion unit;

Fig. 28 is a schematic structural view of the packaging bag in which the pad unit in Fig. 27 is expanded;

Figure 29 and Figure 30 are schematic diagrams of the structure of another liner unit;

Figure 31 is a side sectional view of an unexpanded package made of the liner unit of Figure 29;

Figure 32 is a side sectional view of an expanded package made of the liner unit of Figure 31;

Fig. 33 and Fig. 34 are structural schematic diagrams of another liner unit;

Figure 35 is a side sectional view of an unexpanded package made of the liner unit of Figure 33;

Figure 36 is a side sectional view of an expanded package made of the liner unit of Figure 35;

Figure 37 and Figure 38 are schematic diagrams of the structure of another liner unit;

Fig. 39 is a side sectional view of an unexpanded packaging bag made by the liner unit of Fig. 36;

Fig. 40 is a side sectional view of the expanded packaging bag made by the liner unit of Fig. 37;

Fig. 41 is a structural schematic diagram of another liner unit;

Fig. 42 is a side sectional view of the unexpanded packaging bag made by the pad unit in Fig. 41;

FIG. 43 is a side sectional view of an expanded package made with the liner unit of FIG. 42. FIG.

Detailed ways

Below in conjunction with specific embodiment and accompanying drawing, the present invention is further elaborated and illustrated:

Please refer to Fig. 1 and Fig. 2, the present invention discloses a cushioning pad 100, the cushioning pad 100 is made of paper material, after the paper cushioning pad 100 is used as a cushion filling or outer packaging material, Can be degraded or recycled.

Wherein, the buffer pad 100 includes at least one pad unit 10, and each pad unit 10 includes at least one third surface 11, and the third surface 11 includes a die-cutting area 12 and a transfer area 13, and the transfer The area 13 is located at the center of the third surface 11, and the transfer area 13 is a strip-shaped area arranged along the width direction of the third surface 11; the die-cutting area 12 is located on the side of the transfer area 13; The transmission zone 13 is used to transmit tensile force to the die-cutting zone 12, so that the die-cutting zone 12 is fully expanded, and the expanded die-cutting zone 12 forms a cushioning layer 14, and the cushioning layer 14 The third surface 11 is made to expand in the thickness direction, so as to play the role of cushioning and protection.

In the present invention, the die-cutting area 12 after die-cutting means that multiple rows of cutting openings 122 are cut out on the paper material by means of die-cutting, and two adjacent rows of cutting openings 122 are arranged alternately with each other. After an external force is applied, the cutout 122 is stretched into a three-dimensional shape and becomes a three-dimensional grid structure. The cutout 122 is usually in the shape of a three-dimensional hexagon or a three-dimensional square after being stretched. At this time, the length of the die-cutting area 12 increases, and at the same time expands in the thickness direction to form a cushioning layer 14, thereby playing a role of cushioning and protection.

Wherein a specific structure of the die-cutting area 12 includes: a plurality of cutting lines 121 arranged in columns, each cutting line 121 comprising a plurality of spaced apart cutting openings 122, the cutting openings on two adjacent cutting lines 121 122 are arranged alternately with each other; the lengths and cutting intervals of the cutting openings 122 on each of the cutting lines 121 are the same. After the die-cutting area 12 is stretched, the cutout 122 has a three-dimensional hexagonal structure.

In this embodiment, the thickness of the cushion pad 100 is the thickness of the paper when it is not unfolded. At this time, it can be transported to overseas markets by freight, which can save transportation costs; when the customer uses it, pull it manually or by stretching equipment Stretching the buffer pad 100 causes the die-cutting area 12 to expand and expand in the thickness direction, and the expanded buffer pad 100 is used as a buffer material.

Referring to FIG. 3 , there are multiple pad units 10 , and the multiple pad units 10 are connected end to end. The padding unit 10 is now a strip-shaped cushioning pad 100 after a plurality of padding units 10 are connected. On the one hand, it is conducive to strip-shaped stretching to form a cushioning layer 14. On the other hand, when wrapped on the outside of the article, It can be wrapped on the outside of the article in multiple layers, and the cushioning effect is further enhanced.

Referring to FIG. 4 to FIG. 6 , the present invention also makes a packaging bag 200 through the cushioning pad 100 , and the thickness of the manufactured packaging bag 200 is relatively thin before use, which can effectively save transportation costs during transportation. It is a packaging structure with a cushioning effect that increases in thickness after being expanded by an external force when used after transportation. One of the optimal unfolding methods is that when the article is placed in the packaging bag 200, due to the gravity of the article or the thrust when it is put in, the cushion unit 10 is unfolded inside the packaging bag 200 to form a cushioning layer 14, which plays a role cushioning effect.

Specifically, the packaging bag 200 includes an outer bag body and a cushion unit 10 . The liner unit 10 is arranged in the outer bag body along the length direction, and the two sides in the width direction of the liner unit 10 are not connected to the outer bag body, so as to facilitate the expansion of the die-cutting area 12; When the packaging bag 200 is put into the object, the putting direction is consistent with the length direction of the liner unit 10, and the liner unit 10 is unfolded along the direction of putting in, and expands in the thickness direction of the liner unit 10. , so as to play the role of buffer protection.

In this embodiment, the two ends in the longitudinal direction of the cushion unit 10 are respectively arranged near the inner wall of the opening of the outer bag body 20 , and the center of the cushion unit 10 is suspended in the outer bag body 20 ; After the liner unit 10 is deployed along the insertion direction, the center position of the liner unit 10 moves to the bottom of the inner bag body, so that the buffer layer 14 can basically cover the entire outer bag body 20 Sides, guarantee the cushioning effect of the protective bag.

Referring to FIG. 7 and FIG. 8 , in another embodiment of the present invention, each liner unit 10 includes two die-cutting areas 12 , and the two die-cutting areas 12 are respectively located on two sides of the transfer area 13 . When the pad unit 10 needs to be expanded, a die-cutting area 12 is stretched by an external force, and a die-cutting area 12 transmits the stretching force to the other die-cutting area 12 evenly through the transfer area 13, so that the other die-cutting area 12 The area 12 is unfolded, and the setting of the transfer area 13 can effectively prevent stretching distortion caused by uneven stretching force when the other die-cutting area 12 is unfolded, for example, some areas are unfolded to form a three-dimensional network structure, while other parts cannot be unfolded In addition, the two die-cutting areas 12 have a higher cushioning utilization rate than the structure of one die-cutting area 12 after unfolding. When wrapped or used as a filling material, the wrapping range of the cushioning layer 14 is larger, and the cushioning effect is better .

Referring to FIG. 9 , a plurality of pad units 10 having two die-cutting areas 12 are connected end to end to form a cushion pad 100 . When the cushioning pad 100 is stretched and wrapped on the surface of the article, compared with the cushioning pad 100 with only one die-cutting area 12 , the cushioning effect is further enhanced.

10 and 11 , a packaging bag 200 is also produced by using the cushion unit 10 in this embodiment. Specifically, the packaging bag 200 includes an outer bag body 20 and a cushion unit 10 with two die-cutting areas 12 . When the packing bag 200 is put into the object, the putting direction is consistent with the length direction of the liner unit 10, and the two die-cutting areas 12 in the liner unit 10 are unfolded along the putting direction. Two cushioning layers 14 are formed on both sides of the bag 200 , and the two cushioning layers 14 expand in the thickness direction of the cushion unit 10 to play a role of cushioning and protection. This structure can overcome the destructive force from any direction on the two sides of the packaging bag 200 .

Similarly, the two ends of the length direction of the liner unit 10 are respectively arranged near the opening inner wall of the outer bag body 20, and the center position of the liner unit 10 is suspended in the outer bag body 20; After the pad unit 10 is deployed along the insertion direction, the center position of the pad unit 10 moves to the bottom of the inner bag body, so that the buffer layer 14 can cover the entire side of the outer bag body 20, and is The entire two sides are covered to ensure better cushioning of the pouch.

Referring to FIG. 12 , in another embodiment of the present invention, the pad unit 10 may include a plurality of third surfaces 11, and the two ends of the multi-layer third surfaces 11 are connected to each other. At this time, the plurality of third surfaces 11 may be There may be only one die-cutting area 12 , there may be two die-cutting areas 12 , or a combination of one die-cutting area 12 and a pad unit 10 with two die-cutting areas 12 . In this embodiment, the die-cutting regions 12 of the plurality of third surfaces 11 all form a buffer layer 14 with a three-dimensional network structure after being stretched, that is, a multi-layer buffer layer 14. After overlapping, the multi-layer buffer layer 14 has a more Good cushioning effect.

Referring to Fig. 13 and Fig. 14, the packaging bag 200 is made by using the cushion unit 10 with multiple third surfaces 11, at this time, the packaging bag 200 is compared with the packaging bag made by the cushion unit 10 with only one layer of third surfaces 11. 200, the cushioning effect is better.

In a preferred embodiment of the present invention, the cushion unit 10 has a plurality of third surfaces 11 , and the transfer areas 13 of the third surfaces 11 on two adjacent layers are alternately arranged or not completely overlapped. At this time, after the two layers of die-cutting areas 12 are unfolded, at least one buffer layer 14 is opposite to the transfer area 13 of the other layer, and the transfer area 13 is a paper material that has not been die-cut, while the transfer area 13 can be used as the supporting surface of another layer of the buffer layer 14, the buffer layer 14 acts on the supporting surface when it is stressed, and the buffer layer 14 can have better resilience after the reaction of the supporting surface, thus showing better buffering Effect.

The above embodiments of the present invention do not need to stretch the die-cutting area 12 into a three-dimensional network structure when manufacturing the cushion unit 10 , which can save transportation costs. In addition, when the liner unit 10 is made into the packaging bag 200, it does not need to be fixed inside the packaging bag 200 in the form of a three-dimensional mesh structure, it is only shown as the direct connection or lamination of the plane paper materials, which not only saves transportation cost, and the production process is relatively simple.

Referring to FIG. 15 , the present invention also discloses another cushion pad 300 made of paper material, and the cushion pad 300 includes a pad unit 30 . The pad unit 30 includes a first surface 31 and a second surface 32, the first surface 31 is provided with an extension area 311, the extension area 311 can be expanded along the length direction of the first surface 31, and the extension area 311 is expanded Then the length of the first surface 31 increases. The two ends of the length direction of the second surface 32 are respectively fixed on the two ends of the first surface 31, the second surface 32 is provided with a die-cutting area 320, and the length of the die-cutting area 320 varies with the The extension area 311 increases when it is expanded; the die-cut area 320 is expanded to form a buffer layer, and the buffer layer causes the second surface 32 to expand in the thickness direction to play a buffering and protective role; the die-cut area 320 After unfolding, a three-dimensional grid structure is formed. The die-cutting area 320 includes a plurality of cutting lines 322 arranged in rows, each cutting line 322 includes a plurality of cutting openings 323 distributed at intervals, and the cutting openings 323 on two adjacent cutting lines 322 are arranged alternately to form ; The length and cutting interval of the cutting opening 323 on each of the cutting lines 322 are the same. The cutting line 322 and the cutting opening can form a hexagonal three-dimensional opening when the die-cutting area 320 is stretched, so that the die-cutting area 320 forms a buffer layer to play a role of buffer protection. In this embodiment, the extension area 311 is a region that can be stretched, and the length of the extension area 311 is the same as the stretched length of the die-cutting area 320 on the second surface 32, and the expanded die-cutting area 320 also forms a three-dimensional The buffer layer of the network structure can play a buffering role. The padding unit 30 is the same in that it can be wrapped on the outside of the article to play a protective role.

Referring to FIG. 16 , in another embodiment of the present invention, there are two extension regions 311 , and the two extension regions 311 are respectively close to two ends of the first surface 31 . At this time, when the first surface 31 is stretched by an external force, the two extension areas 311 are simultaneously deployed along with the second surface 32. Compared with the embodiment with only one extension area 311, the stretching is smoother, and the extension area 311 The stretching length is larger, which can meet the larger stretching ratio of the second surface 32 .

Referring to FIG. 17 , in this embodiment, the buffer pad 300 may have a plurality of pad units 30 , the multiple pad units 30 are connected end to end, and the first surface 31 and the second surface 32 The pad units 30 are fastened to each other at their ends. The cushioning cushion 300 of the cushioning unit 30 after multiple cushioning units 30 are connected at this time is a belt-shaped structure, which is conducive to belt-shaped stretching on the one hand and forms a cushioning layer; on the other hand, when wrapped on the outside of the article, it can The cushioning effect is further enhanced by wrapping multiple layers around the outside of the item.

Referring to FIG. 18 , in this embodiment, the pad unit 30 may also include a plurality of second surfaces 32 , the plurality of second surfaces 32 are connected to each other at both ends of the first surface 31 , and the plurality of second surfaces 32 After stretching, a multi-layer cushioning layer structure is formed, which has better cushioning effect. Among them, it is preferred that the plurality of cutting lines 322 on the plurality of second surfaces 32 are staggered, so that after the plurality of second surfaces 32 are stretched, the three-dimensional network structure formed is also staggered. Interaction, or meshing, enables greater support, thus ensuring better cushioning.

Referring to FIG. 19 and FIG. 20, the extension area 311 is formed by folding or folding the first surface 31 along the width direction, and the extension area 311 is unfolded to increase in length with the first surface 31 and the second surface 32. The length of the increase is the same.

The manufacturing method of pleating and folding is relatively simple, which can reduce the manufacturing process of the first surface 31 , thereby ensuring the production efficiency of the pad unit 30 and reducing the cost. Referring to FIG. 21 to FIG. 24 , the present invention also discloses a packaging bag 400 made by using the cushion unit 30 in this embodiment. Specifically, the packaging bag 400 includes an outer bag body 40 and a cushion unit 30 . The liner unit 30 is disposed inside the outer bag body 40 along the length direction, and the two sides in the width direction of the liner unit 30 are not connected to the outer bag body 40; the packaging bag 400 is put into When placing an object, the insertion direction is consistent with the length direction of the pad unit 30, and the pad unit 30 expands along the insertion direction and expands in the thickness direction of the pad unit 30, thereby providing cushioning protection effect.

The width of the cushion unit 30 is smaller than the width of the packaging bag 400; after the cushion unit 30 is unfolded, the two sides of the width of the cushion unit 30 are against the inner edges of the outer bag body 40 , so that a relatively airtight space is formed between the outer bag body 40 and the pad unit 30 .

The two ends of the length direction of the liner unit 30 are respectively arranged near the opening inner wall of the outer bag body 40, and the central position of the liner unit 30 is suspended in the body of the outer bag body 40; the liner unit After the 30 is deployed along the insertion direction, the center position of the cushion unit 30 moves to the bottom of the inner bag body.

When the packing bag 400 is put into the object, the putting direction is consistent with the length direction of the cushion unit 30, and the die-cutting area 320 on the second surface 32 is unfolded along the putting direction, and the packing bag 400 Two buffer layers 321 are formed on both sides of the pad unit 30 , and the two buffer layers 321 expand in the thickness direction of the pad unit 30 to play a role of buffer protection. This structure can overcome the destructive force from any direction on the two sides of the packaging bag 400 .

Wherein, the shape of the cushion unit 30 in the packaging bag 400 when it is not unfolded is shown in FIG. 21 , and the structure of the cushion unit 30 in the packaging bag 400 after being unfolded is shown in FIG. 22 . It can be seen from the figure that when the second surface 32 is unfolded, the extension area 311 on the first surface 31 is also unfolded synchronously, forming a relatively smooth inner wall structure, which is convenient for objects to be put in.

Referring to FIG. 23 and FIG. 24 , it is preferred that the distance between one of the extension regions 311 and one end of the first surface 31 is different from the distance between the other extension region 311 and the other end of the first surface 31 . At this time, when the first surface 31 is unfolded, the two extension areas 311 are misaligned with each other, so as to ensure that they do not interfere with each other when unfolding in such a narrow space inside the packaging bag 400, and reduce the resistance when the extension areas 311 are unfolded, so that objects can be placed It is more convenient to enter, and at the same time, it also ensures the effectiveness of the expansion.

Wherein, the expanded lengths of the two extension areas 311 are the same. When the items are put in, the same expanded length can ensure that the contact position between the object and the first surface 31 will not be displaced, and the items will be put in more smoothly. The frictional force of the surface 31 makes it difficult to put objects in, or a greater thrust is required to expand the second surface 32 , wherein a greater thrust may cause damage to the first surface 31 .

Further preferably, the extension area 311 is formed by folding on the first surface 31 along the width direction; the folded width of the two extension areas 311 is small, so that the extension area 311 can be unfolded in a narrow space.

Among them, the smaller folding width can ensure smoother unfolding in a narrow space, and the thrust is smaller.

Referring to Figure 25 and Figure 26, in a preferred embodiment, the width of the second surface 32 is slightly smaller than the width of the first surface 31, it can be seen from the figure that when the second surface 32 is completely After unfolding, the second surface 32 acts on the outer bag body 40 and the first surface 31, so that the outer bag body 40 and the first surface 31 are in contact near the sides of the object insertion direction, that is to say the first surface 31 The sides in the two length directions are against the inner wall of the outer bag body 40, and the two ends in the length direction of the second surface 32 are connected near the opening of the outer bag body 40, so the second surface 32 is in the first position. In the space enclosed by the surface 31 and the outer bag body 40, on the one hand, the second surface 32 itself has a buffer layer 321 to play a buffering role; on the other hand, a cavity with air is formed in the second surface 32, when the outer bag body 40 When the body is subjected to external force, the air in the cavity can also play a buffering role, further enhancing the buffering effect.

27 and 28, an embodiment of the present invention is that the pad unit 30 includes two layers of second surfaces 32, and the two layers of second surfaces 32 are connected to each other at the end of the pad unit 30, when the pad After the unit 30 is made into the packaging bag 400 , a two-layer cushioning layer 321 is formed on each side of the packaging bag 400 , which can improve the cushioning effect of the packaging bag 400 .

Referring to Fig. 29 and Fig. 30, the pad unit 30 of the present invention has another embodiment.

Wherein, the second surface 32 includes a first sub-surface 33 and a second sub-surface 34, the first sub-surface 33 and the second sub-surface 34 are a die-cutting area 320, the first sub-surface 33 and the The second sub-surface 34 together constitutes the second surface 32; one end of the first sub-surface 33 is connected to one end of the first surface 31, and the other end of the first sub-surface 33 is connected to the first surface 31. The second sub-surface 34 is connected to the other end of the first surface 31 , and the other end of the second sub-surface 34 is connected to the centerline of the first surface 31 in the longitudinal direction.

Referring to Fig. 31 and Fig. 32, in this embodiment, when the liner unit 30 is made into the packaging bag 400, after the liner unit 30 is folded in half, it can be ensured that the center line of the first surface 31 is aligned with the outer bag body 40 bottom. After the packaging bag 400 is manufactured by using the cushion unit 30, the packaging bag 400 itself is relatively thin, which can reduce transportation costs. When an object is put in or the first sub-surface 33 and the second sub-surface 34 in the second surface 32 are pushed to expand by an external force, the first sub-surface 33 and the second sub-surface 34 expand in the thickness direction to form a buffer layer 321 . When the first sub-surface 33 and the second sub-surface 34 are inflated, the first sub-surface 33 is affected by the pulling force from both ends of the first sub-surface 31, respectively, one end of the first surface 31, and the pulling force on the center line of the second surface 31, which can It is easier to pull the first sub-surface 33 to unfold; similarly, the second sub-surface 34 can also be easier to unfold. Referring to Fig. 33 and Fig. 34, the pad unit 30 of the present invention has another embodiment.

Wherein, the first surface 31 has a transmission area 312, the transmission area 312 is located at the center of the first surface 31, and the transmission area 312 is a strip-shaped area arranged along the width direction of the first surface 31 The second surface 32 includes a first sub-surface 33 and a second sub-surface 34, the first sub-surface 33 and the second sub-surface 34 are die-cutting areas 320, the first sub-surface 33 and the second sub-surface The two sub-surfaces 34 jointly constitute the second surface 32; one end of the first sub-surface 33 is connected to one end of the first surface 31, and the other end of the first sub-surface 33 is connected to one end of the transfer area 312 ; The second sub-surface 34 is connected to the other end of the first surface 31 , and the other end of the second sub-surface 34 is connected to the other end of the transfer area 312 .

Referring to Fig. 35 and Fig. 36, the present invention also utilizes the cushion unit 30 to make a packaging bag 400. After the packaging bag 400 is made, the size of the packaging bag 400 itself is relatively thin, which can reduce transportation costs. It can be directly pressed against the transmission area 312 , the transmission area 312 pushes the first surface 31 to unfold, and the first surface 31 drives the first sub-surface 33 and the second sub-surface 34 to unfold. In particular, there is no die-cutting area 320 at the position corresponding to the transfer area 312 after unfolding at this time, so the transfer area 312 can easily directly abut against the bottom of the packaging bag 400, so that the two sides of the outer bag body 40 The buffer zone formed by the expansion of the first sub-surface 33 and the second sub-surface 34 can be fully covered on the side, and can have a deeper insertion depth; at the same time, the thrust received by the first surface 31 when it is expanded is relatively small, so it is easier to expand, and even only The first sub-surface 33 and the second sub-surface 34 can be unfolded by the gravity of the article put in; compared with the way that the second surface 32 is completely covered on the first surface 31, the transmission area can 312 does not generate friction with the second surface 32, which can also ensure smoother deployment.

Referring to Fig. 37 and Fig. 38, the pad unit 30 of the present invention has another embodiment.

Wherein, the first surface 31 has a transmission area 312, the second surface 32 has a blank area 324, the transmission area 312 is located at the center of the first surface 31, the blank area 324 is connected to the transmission The area 312 is opposite; the transfer area 312 is a strip-shaped area arranged along the width direction of the first surface 31; the second surface 32 includes a first sub-surface 33 and a second sub-surface 34, and the first sub-surface The surface 33 and the second sub-surface 34 are respectively located on both sides of the blank area 324, and the first sub-surface 33, the second sub-surface 34 and the blank area 324 together constitute the second Surface 32; the end of the first sub-surface 33 away from the blank area 324 is connected to one end of the first surface 31, and the other end of the second sub-surface 34 away from the blank area 324 is connected to the second One side 31 is connected to the other end.

In this embodiment, the second surface 32 is complete, the first sub-surface 33 and the second sub-surface 34 are part of the second surface 32, the second surface 32 also only needs to combine the two parts of the second surface 32 It is only necessary to connect the ends to the two ends of the first surface 31 respectively, and it is not necessary to cut the first sub-surface 33 and the second sub-surface 34 to be fixed and pasted separately.

When the first sub-surface 33 and the second sub-surface 34 are unfolded, it is enough to push or pull the transmission area 312 or the blank area 324, and the second surface 32 does not generate friction with the first surface 31 in the blank area 324, thereby The unfolding of the first sub-surface 33 and the second sub-surface 34 is also smoother.

Referring to Fig. 39 and Fig. 40, the present invention uses the liner unit 30 in this embodiment to make a packaging bag 400, wherein, after the liner unit 30 is fixed to the packaging bag 400, it can be placed on both sides of the outer bag body 40. A complete buffer layer 321 is formed on the top, and the blank area 324 and the transfer area 312 can be supported against the bottom of the packaging bag 400 , with a deeper insertion depth.

Referring to Fig. 41 and Fig. 42, the cushion unit 30 of the present invention has another embodiment.

Wherein, the extension area 311 on the first surface 31 can also be the die-cutting area 320 , the first surface 31 has a transfer area 312 , and there are two extension areas 311 . Both ends of the two extension regions 311 are respectively connected to the ends in the length direction of the first surface 31 and the blank region 324, the transfer region 312 is located at the center of the first surface 31, and the transfer region 312 is a strip-shaped area arranged along the width direction of the first surface 31 .

At this time, the transmission area 312 can be pushed or pulled under the action of an external force, so that the extension area 311 is expanded to form a buffer layer 321, and the second surface 32 is expanded to form a buffer layer 321. At this time, the pad unit 30 has two layers of buffer Layer 321.

Referring to FIG. 43 , a packaging bag 400 is made by using the cushion unit 30 of this embodiment, wherein after the packaging bag 400 is put into an object, the extension area 311 on the first surface 31 is unfolded and the die-cutting area 320 on the second surface 32 It also unfolds to form a double layer structure. When making this liner unit 30, the first surface 31 and the second surface 32 can be cut out in one process step of die-cutting, without additional pasting, wrinkling, and folding actions, and the manufacturing process is simple. cut costs.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting the protection scope of the present invention, although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand , the technical solution of the present invention may be modified or equivalently replaced without departing from the spirit and scope of the technical solution of the present invention.

Claims

A cushion pad, characterized in that the cushion pad is made of paper material, the cushion pad includes at least one pad unit, and each pad unit includes:

The first surface, the first surface is provided with at least one extension area, the extension area can be expanded along the length direction of the first surface, and the length of the first surface increases after the expansion area is expanded;

At least one layer of second surface, the two ends of the length direction of the second surface are respectively fixed to the two ends of the first surface, the second surface is provided with a die-cutting area, the length of the die-cutting area varies with The extension area increases when it is expanded; the die-cut area is expanded to form a buffer layer, and the buffer layer causes the second surface to expand in the thickness direction, so as to play a role of buffer protection;

After the die-cutting area is unfolded, a three-dimensional grid structure is formed.
The cushioning pad according to claim 1, wherein the pad unit has a plurality of pad units connected end to end, the first surface and the second surface The ends of the pad unit are fixed to each other.
The buffer pad according to claim 2, wherein the extension area is the die-cut area, and two ends of the extension area are respectively connected to the first surface.
The buffer pad according to claim 3, wherein the die-cutting area includes a plurality of cutting lines arranged in rows, each cutting line includes a plurality of cutting slits distributed at intervals, and two adjacent cutting lines The incisions on the lines are staggered with each other; the lengths and intervals of the incisions on each of the cutting lines are the same.
The buffer pad according to claim 1 or 2, wherein the die-cutting area includes a plurality of cutting lines arranged in columns, each cutting line includes a plurality of cutting slits distributed at intervals, two adjacent The incisions on the two cutting lines are arranged alternately; the lengths and intervals of the incisions on each of the cutting lines are the same.
The cushioning pad according to claim 5, wherein said extended area is formed by pleating or folding said first surface along the width direction, and said extended area expands to an increased length corresponding to said first surface and said first surface. The second side increases the same length.
The buffer pad according to claim 6, characterized in that, there are two extension regions, and the two extension regions are respectively close to the two ends of the first surface; one of the extension regions is connected to the first surface The distance between one end is different from the distance between the other extension area and the other end of the first surface.
The buffer pad according to claim 7, characterized in that, the stretched area is formed by folding along the width direction on the first surface; the folded width of the two stretched areas is small, so that the stretched area is convenient It is unfolded in a narrow space; the second surface has two layers, and the two ends of the second surface of the two layers are respectively connected with the two ends of the first surface.
The buffer pad according to any one of claims 1 to 3, wherein the second surface comprises a first sub-surface and a second sub-surface, and the first sub-surface and the second sub-surface are die-cut area, the first sub-surface and the second sub-surface jointly constitute the second surface; one end of the first sub-surface is connected to one end of the first surface, and the other end of the first sub-surface is connected to The center line in the length direction of the first surface is connected; the second sub-surface is connected to the other end of the first surface, and the other end of the second sub-surface is connected to the center line in the length direction of the first surface.
The cushioning pad according to claim 9, wherein said first face has a transfer area, said transfer area is located at the center of said first face, said transfer area is along the width of said first face A strip-shaped area arranged in the direction; the other end of the first sub-surface is connected to one end of the transfer area; the second sub-surface is connected to the other end of the first surface, and the other end of the second sub-surface Connect to the other end of the transfer zone.
The cushioning pad according to any one of claims 1 to 3, wherein the first surface has a transmission area, the second surface has a blank area, and the transmission area is located at the center of the first surface position, the blank area is opposite to the transfer area; the transfer area is a strip-shaped area arranged along the width direction of the first surface; the second surface includes a first sub-surface and a second sub-surface, The first sub-surface and the second sub-surface are respectively located on both sides of the blank area, and the first sub-surface, the second sub-surface and the blank area together constitute the second surface ; The end of the first sub-surface away from the blank area is connected to one end of the first surface, and the other end of the second sub-surface away from the blank area is connected to the other end of the first surface.
A cushion pad, characterized in that the cushion pad is made of paper material, the cushion pad includes at least one pad unit, and each pad unit includes at least one third surface, The third surface includes a die-cutting area and a transfer area, the transfer area is located at the center of the third surface, and the transfer area is a strip-shaped area arranged along the width direction of the third surface; The cutting area is located on one side of the transfer area; the transfer area is used to transmit tensile force to the die-cutting area, so that the die-cutting area is expanded, and the expanded die-cutting area forms a buffer layer, so The buffer layer causes the third surface to expand in the thickness direction, thereby playing a role of buffer protection.
A packaging bag, characterized in that the packaging bag comprises:

outer bag;

The pad unit according to claim 1 or claim 12, the pad unit is arranged in the outer bag body along the length direction, and the two sides of the pad unit in the width direction are not connected to the outer bag body set up;

When the packing bag is put into the object, the putting direction is consistent with the length direction of the liner unit, and the liner unit is unfolded along the direction of putting in, and expands in the thickness direction of the liner unit, thereby to buffer protection.
The packaging bag according to claim 13, wherein the width of the pad unit is smaller than the width of the packaging bag; after the pad unit is unfolded, the two sides of the pad unit width are against the The two inner sides of the outer bag body form a relatively airtight space between the outer bag body and the pad unit.
The packaging bag according to claim 13 or 14, wherein the two ends of the liner unit in the longitudinal direction are respectively arranged near the inner wall of the opening of the outer bag body, and the central position of the liner unit is suspended above the inside the outer bag; after the liner unit is deployed along the insertion direction, the center of the liner unit moves to the bottom of the inner bag.