Air bag box board

Abstract

The present invention relates to a box board, namely, an airbag box board, which is composed of corrugated paper and airbag groups arranged in a spaced manner. The airbag and corrugated paper are formed by hot working, and two sheets are buckled together, heat-sealed and bonded, and the airbag is inflated at the same time. The box can reduce the weight and cost of the box. It can also improve the box's pressure resistance and shock absorption capabilities. It has high strength and wear resistance, is not affected by moisture, and is durable. It is suitable for use in boxes that can be folded and unfolded for repeated use.

Description

Technical Field

[0001] The invention relates to a box board for repeatedly folding and unfolding a box, and in particular to a box board composed of air bags and corrugations arranged at intervals, which is applied to boxes that can be repeatedly folded and unfolded for use. Background Art

[0002] The box board material used to make boxes is generally made of corrugated paper, which is light and shock-absorbing. However, it is fragile and not moisture-proof, so it is not suitable for boxes that can be folded and unfolded repeatedly. Using other boards to make box boards is heavy, expensive, and does not have the shock-absorbing effect of corrugated box boards. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention aims to provide a box board that is strong and durable, not easy to be damaged, lightweight and shock-absorbing, moisture-proof and humidity-proof, with good strength and quality, and is suitable for use in boxes that can be repeatedly folded and unfolded for use.

[0004] In order to achieve the above-mentioned purpose, the present invention proposes a box board, in particular, an airbag box board, the specific structure of which is that the box board is composed of a plurality of box board groups stacked on each other. The box board groups are bonded by high-frequency heat sealing, and the box board groups can share a panel. The middle layer of the box board group is composed of corrugated paper and airbag groups arranged in a cyclic and spaced combination in sequence, the outer layer is the outer surface panel, and the inner layer is the lining panel, which is composed of three layers: outer, middle and inner. Because the box board group contains airbags, it is also called an airbag box board, or box board for short. There are several airbags in the airbag group. After the airbag shell and "V"-shaped corrugation of the airbag are pre-processed and formed on the same sheet material, every two pieces are buckled together, and the edges of the intersection of the "V"-shaped corrugation and the airbag shell and the plane of the sheet material are heat-sealed to form a whole. At the same time, the airbag shell is inflated and heat-sealed to seal the airbag shell around to form a cylindrical airbag. The two ends of the cylindrical airbag are semi-spherical with the same diameter as the cylinder. The corrugation is a "V"-shaped structure. The two long straight lines formed by the vertices of the two "V"-shaped small arcs of the flat quadrilateral formed by the corrugation are heat-sealed to the outer surface panel and the lining panel of the box panel group respectively, so that the outer, middle and inner three layers of the box panel group are connected as a whole. That is, the corrugation is responsible for connecting the airbag group and the outer surface panel and the lining panel, and one corrugation is connected to each side of the airbag group. The two long straight lines at the two outermost points of the airbag cylinder support the outer panel and the lining panel respectively, and are in contact with the inner and outer panels but not bonded and fixed. The airbag is in a free state except for the four edges of the airbag shell, which are bonded and sealed, so that the airbag can be compressed and deformed without hindrance. The airbag can increase the thickness and strength of the box board without increasing the weight of the box board group, so that the box board has a certain anti-bending performance and compressive strength. In other words, the airbag makes the box board have a certain anti-bending performance and compressive strength, and bears the main load-bearing role in the box board. The weight of the items in the box is mainly borne by the airbag.

[0005] The airbag group is composed of a plurality of airbags. The plurality of airbags is X airbags, where X is a positive integer greater than or equal to 1, and the value of X is determined by the size, shape and purpose of the specific box. According to different load-bearing parts of the box board, the number of airbags in the airbag groups at different parts of the box board group can be different. That is, the value of X can be variable, that is, the number of airbags in different airbag groups can be the same or different.

[0006] The plurality of box panel groups, namely N box panel groups, is a positive integer greater than or equal to 1. The value of N is determined by the size, shape and purpose of the specific box and the strength requirement of the box panel.

[0007] The corrugations and the airbag groups are arranged and combined in a cyclical interval in sequence, namely, corrugations-airbag groups-corrugations-airbag groups-corrugations, which are arranged in a cyclical manner, and start with the corrugations and end with the corrugations.

[0008] The airbag shell is the outer shell of the airbag that encloses the compressed gas. In practical applications, the specific size and shape of the preformed airbag shell before inflation should be determined according to the specific thickness, size, material and forming process of the airbag shell. This ensures that the outer dimensions and pressure resistance of the inflated cylindrical airbag meet the design requirements of the specific box board.

[0009] The pre-forming process refers to the first pre-forming process of the shape of the corrugated paper and the airbag before heat-sealing and bonding according to the forming process requirements, which generally adopts the blister or molding process.

[0010] The airbag and corrugated paper are generally made of thermoplastic material or rubber or rubber-like sheet material, which has good tensile strength but poor vertical compression resistance. Vertical compression is to apply force to both ends of the sheet material along the length direction to test its pressure bearing capacity.

[0011] If only "V" shaped corrugated structure is used to make box board, although the box board is light and thick, the compression resistance and elasticity of the box board are poor, and it is easy to be flattened and cannot bounce back. The load-bearing capacity and shock absorption effect are also poor, which affects the reuse of the box. Therefore, the box board made of single corrugated is only suitable for boxes with lighter weight.

[0012] By using the airbag group and the corrugated paper in a spaced manner, the pressure on the airbag can be converted into compression deformation of the airbag. The compression deformation of the gas in the airbag converts the pressure into the expansion force on the airbag shell. The expansion force on the airbag shell is equivalent to the tensile force on the sheet material. Therefore, the use of the airbag can successfully convert the pressure into expansion force, so that most of the pressure on the sheet material is converted into the tensile force on the sheet material, thereby giving full play to the disadvantage of the sheet material with good tensile properties but poor compression properties. In this way, the box board can withstand greater pressure, that is, the box can hold heavier items. Even if the box board is compressed and deformed, most of the pressure can be absorbed by the compressed gas and the local deformation of the airbag, and after the external pressure disappears, it can quickly restore its original shape under the expansion of the compressed gas in the airbag. In this way, the box can be repeatedly used, which increases the service life of the box.

[0013] At the same time, because the gas in the airbag is compressible, the airbag has a good shock absorption effect. When the box is subjected to impact force, the airbag can compress the gas due to local deformation to absorb the impact force, which can effectively reduce the damage to the items in the box.

[0014] The long straight lines formed by the vertices of the two "V"-shaped small arcs formed by the flat quadrilateral formed by the two "V"-shaped corrugations are respectively bonded to the lining panel and the outer panel, so that the outer layer, middle layer and inner layer of the box board are integrated, which strengthens the overall strength and bending resistance of the box board and facilitates the assembly of the box board with other box parts. The airbag supports the lining panel and the outer panel at the same time. Because there is only contact but no fixed connection, the airbag can deform freely when under pressure. The airbag groups are separated by corrugated sheets, and the airbags are independent and sealed from each other without ventilation.

[0015] The corrugated sheet mainly serves to connect the inner and outer panels and the airbag assembly. When it is a single sheet, it is in a "V" shape. After two sheets are buckled and bonded, the two "V" shapes are buckled to form a flat quadrilateral shape. The flat sides of the two middle points of the quadrilateral and the long straight lines of the two vertices are all bonded and fixed. The function and role of the corrugated sheet have not changed, so the flat quadrilateral corrugated sheet is also referred to as corrugated sheet.

[0016] Suppose the angle of "V" corrugation is Q, and the Q value is selected between greater than or equal to 0° and less than 180°. When the Q value is equal to 0°, that is, the two sides of the "V" corrugation are parallel, and the corrugation changes from "V" shape to "U" shape. That is, "U"-shaped corrugation is a special case of "V"-shaped corrugation when the angle Q is equal to 0°. "U"-shaped corrugation does not have the triangular stability of "V"-shaped corrugation, but the tension and support force of "U"-shaped corrugation on the inner and outer panels are more intuitive and concise, and the design and calculation are also more convenient.

[0017] "V" shaped corrugated paper is called triangular corrugated paper, and "U" shaped corrugated paper is also called right-angled corrugated paper.

[0018] In addition, because the flat sides at the two middle points of the quadrilateral and the long straight lines at the two vertices are all bonded and fixed, the flat quadrilateral shape does not change the triangular stability of the corrugated "V" shape.

[0019] The long straight lines at the outermost two points of the flat quadrilateral corrugation are the long straight lines formed by the arc vertices of the "V" shape. Due to the influence of the hot pressing bonding, it is actually a long plane with a certain width, but because it is much narrower than the wide mouth of the "V" shape, for the convenience of description, this long plane is also called a long straight line. This long straight line is a long straight line with a certain width.

[0020] The top of the arc of the V-shaped corrugated board is hot-pressed into a small plane and bonded to the inner and outer panels as a whole according to the forming characteristics of the thermoplastic material.

[0021] The box panel group refers to the outer surface panel of the outer layer, referred to as the outer layer; the middle layer composed of the airbag and the corrugated paper, referred to as the middle layer; the inner lining panel of the inner layer, referred to as the inner layer; a total of three layers, namely the outer layer, the middle layer and the inner layer. These three layers are grouped together and are called a box panel group.

[0022] The boxboard refers to the board that constitutes the six sides of the box, namely the length, width and height. A boxboard is composed of several boxboard groups stacked on each other. It can be composed of at least one boxboard group. If the strength and impact resistance of the boxboard are to be further improved, a boxboard composed of several boxboard groups stacked on each other can be used. Boxboard groups can share a panel. It is also called an airbag boxboard, or boxboard for short.

[0023] There are three situations of contact between the airbag cylinder and the inner lining panel and the outer surface panel respectively. The first is virtual contact, that is, there is a certain gap between the airbag cylinder and the inner and outer panels; the second is line contact, that is, the airbag cylinder is just in contact with the inner and outer panels; the third is overcontact, that is, there is a certain interference contact between the airbag cylinder and the inner and outer panels, that is, the airbag cylinder is flattened by the inner and outer panels at the contact point, so that the contact line becomes a narrow strip with a certain width.

[0024] The two long straight lines at the outermost points of the airbag cylinder are the two long straight lines where the airbag cylinder contacts the inner lining panel and the outer surface panel respectively. In actual production, due to manufacturing errors, virtual contact may occur between some airbags and the inner and outer panels, that is, there is a certain gap between the two. In order to minimize this virtual contact, the inner and outer panels are connected to the corrugated paper, and the tensile force of the corrugated paper is applied to generate a certain pre-pressure on the airbag cylinder, so that the airbag has a smaller deformation. This also makes these two long straight lines have a certain width dimension. However, because their width dimension is relatively small, they are also called long straight lines.

[0025] The airbag shell has a closed heat-sealing adhesive tape adjacent to the closed intersection formed by the intersection of the airbag cylindrical shell and the flat part of the sheet material. The width of the tape is equal to the width of the heat-sealing head of the heat-sealing machine.

[0026] The term "integrated" means that the airbag shell and "V"-shaped corrugation of the airbag are pre-processed and formed on the same sheet material, and each two sheets are buckled together and heat-sealed to form a whole, and the long straight line formed by the vertices of the two "V"-shaped small arcs of the flat quadrilateral formed by the corrugation is heat-sealed to the outer surface panel and the lining panel of the box panel group, so that the outer, middle and inner three layers of the box panel group are connected as a whole. That is, the box panel group formed by the connection parts of the outer, middle and inner three layers are heat-sealed and cannot be disassembled without destruction, that is, it is integrated.

[0027] The deformation without hindrance refers to the deformation of the airbag caused by the pressure on the airbag when the inner and outer panels are deformed by external forces. Because only the middle of the airbag is fixed, the other two semi-cylindrical parts are not fixed, and there are no other objects in the space between the airbags and between the airbags and the corrugated paper. Therefore, the deformation and bounce of the airbag under pressure are affected by the force of the inner and outer panels. The deformation without hindrance does not mean that there is no hindrance, but that there is no other object that can block it except the inner and outer panels.

[0028] The inner lining panel and the outer surface panel are both made of sheet material, that is, thin plates that can be processed twice, generally thermoplastic materials and rubber-like materials.

[0029] The heat-sealing bonding generally adopts an ultrasonic high-frequency vibration heating method.

[0030] The boxes include boxes (1), (2) and (3) that can be folded and unfolded repeatedly for use, which are described in three patent applications.

[0031] The present invention has the following beneficial effects:

[0032] The mutual spacing combination of airbags and corrugated structures can improve the load-bearing capacity of the box board. Because the airbags and corrugated sheets are made of sheet materials with light weight and high strength, they can withstand heavy weight, have good shock absorption effect, and have good resistance to local deformation.

[0033] Applying this airbag box board to boxes that can be folded and unfolded repeatedly can not only reduce the weight of the box and the cost of the box, but also improve the box's ability to resist compression, bending and shock absorption. It is also strong and wear-resistant and is not affected by moisture. It is durable and very suitable for use in boxes that are folded and unfolded repeatedly. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of the structure of the airbag and corrugated combination of Example 1;

[0035] Figure 2 is an isometric structural diagram of the airbag and corrugated combination of Example 1;

[0036] Figure 3 This is a schematic diagram of the structure of the box board in Example 2, in which the airbag is combined with the straight corrugated paper and the box board group is combined into the box board;

[0037] Figure 4 This is an isometric structural diagram of Example 2 in which an airbag is combined with a straight corrugated board and a box board group to form a box board.

[0038] In the figure: 1 - upper half of the corrugated airbag; 2 - lower half of the corrugated airbag; 3 - lining panel; 4 - outer panel; 5 - middle panel; 6 - outer box panel group; 7 - inner box panel group. DETAILED DESCRIPTION

[0039] Embodiment 1:

[0040] Figure 1 It is a schematic diagram of the structure of the airbag and corrugated combination. Figure 2 It is an isometric structural diagram of the airbag and corrugated combination. Figure 1 and Figure 2 The part numbers and names are the same.

[0041] Figure 2 The isometric structural diagram reflects the composition relationship between the airbag, corrugation, the airbag upper half 1 and the corrugated airbag lower half 2, the lining panel 3 and the outer panel 4, as well as the shape of the airbag after heat-sealing and inflation along the periphery.

[0042] In this example, the number of airbags in the airbag group is X=1, that is, the airbag group has only one airbag. There is only one box panel group in the box panel, and N=1.

[0043] The single-sided corrugated structure is a "V"-shaped triangle, and the single-sided airbag is a hollow semi-cylindrical shape. It is made of the initial airbag shell and corrugated preformed by hot pressing, and then the two pieces are buckled together. Ultrasonic high-frequency hot pressing is used to fill the initial airbag shell with gas of appropriate pressure and seal the four edges of the airbag to form a new cylindrical airbag. The upper half of the corrugated airbag 1 and the lower half of the corrugated airbag 2 are the same in shape, material, thickness and size. After the corrugated and the airbag are first hot-pressed, the upper half of the corrugated airbag 1 and the lower half of the corrugated airbag 2, such as Figure 1As shown, they are buckled together, and the periphery of each airbag is hot-pressed and bonded together, and the airbag is filled with gas of appropriate pressure. The airbag and the corrugation are arranged at intervals, and two triangular corrugations are buckled to form a flat quadrilateral. Two half hollow cylinders are buckled to form a cylindrical airbag, and the two ends of the cylinder are hemispherical with the same diameter as the cylinder. The outermost two vertices of the quadrilateral should be kept flush with the outermost two points of the airbag. The lining panel 3 and the outer surface panel 4 are respectively bonded to the two vertices of the two quadrilaterals. The airbag is in contact with the two panels but is not fixedly connected, so that the airbag can deform freely and the airbag can support the inner and outer panels, and bear the gravity and vibration force of the box board together with the corrugated shape.

[0044] After the inner lining panel 3 and the outer surface panel 4 are bonded to the corrugated paper, the combination of the corrugated paper and the airbag is connected as a whole, which improves the overall strength and bending resistance of the box board. The inner and outer panels have a certain protective effect on the corrugated paper and the airbag, and are also convenient for the assembly of the box board and other box parts. The triangular corrugated paper makes the box board evenly stressed, can withstand greater pressure, and can quickly recover to its original state after being deformed by force. After the airbag is deformed by pressure, the pressure is transmitted to the gas, and the gas expands under pressure, and the pressure is transmitted back to the airbag, so that the airbag is subjected to the expansion force. The expansion force of the airbag is equivalent to the tensile force, and the tensile resistance of thermoplastic materials is generally very good. Therefore, the airbag's ability to resist compression and vibration is much higher than that of the triangular corrugated paper, and the shape recovery after compression deformation depends on the automatic expansion of the compressed gas, and the deformation recovery is also very fast. Because the corrugated paper, the airbag, the inner lining panel 3 and the outer surface panel 4 are bonded to each other, they are connected and supported to form a whole. The strength and rigidity of the box board are not provided by a single component alone, but are the result of comprehensive interaction. Therefore, each component can be made of relatively thin materials, thereby reducing the weight of the box board and reducing the cost. At the same time, the performance of the box board is improved.

[0045] Embodiment 2:

[0046] Figure 3 This is a schematic diagram of the structure of the box board in which the airbag is combined with the straight corrugated board and the box board group is combined;

[0047] Figure 4 This is an isometric structural diagram of the boxboard in which the airbag is combined with the straight corrugated board and the boxboard group is combined.

[0048] In this example, the number of airbags in the airbag group is X = 2, that is, the airbag group has two airbags. The box board is composed of two box board groups, N = 2. Increasing the number of airbags in the airbag group can reduce the number of corrugations and appropriately improve the vibration reduction performance of the box board.

[0049] The single-faced corrugated structure is a "U"-shaped right-angled shape, and the single-faced airbag is a hollow semi-cylindrical shape. The heat connection and assembly method of the corrugated airbag upper half 1 and the corrugated airbag lower half 2 are the same as those in Example 1.

[0050] The outer box panel group 6 and the inner box panel group 7 share the middle panel 5, so that the inner and outer box panel groups are integrated into a new box panel. Its strength and bending resistance are much higher than the box panel composed of a single box panel group, and its vibration reduction performance is also much better.

[0051] The functions and processing methods of the lining panel 3 and the outer surface panel 4 are the same as those in Example 1 and will not be described in detail.

[0052] The specific application of the above-mentioned box panels in the boxes (I), (II) and (III) which can be repeatedly folded and unfolded is to cut the box panels into the required size according to the specific size of the box, hot press the table edges and other structures to be installed and seal the edges, and then install the various connecting parts and rotating shafts respectively.

[0053] Key vocabulary notes:

[0054] 1. Airbag - a cylindrical object formed by filling gas with appropriate pressure between two sheets of material and sealing them together through heat sealing.

[0055] 2. Airbag group: It is composed of 1 or N airbags, where N is a positive integer.

[0056] 3. Fasten - overlap each other mouth to mouth.

[0057] 4. Heat sealing - generally use ultrasonic high-frequency vibration heating to bond the two materials into one.

[0058] 5. External panel: the panel facing the outside of the box. Referred to as external panel or external.

[0059] 6. Lining panel: the panel facing the inside of the box. Referred to as the inner panel or lining.

[0060] 7. Vibration reduction - locally deform the airbag and absorb vibration energy by compressing the gas in the airbag.

[0061] 8. Main load-bearing means that the airbag bears most of the weight of the items in the box. The rest is borne by the inner and outer panels and corrugated paper.

[0062] 9. Bending resistance: Support the box panel specimen at both ends, gradually apply pressure in the middle of the box panel, and the maximum pressure when the box panel specimen begins to deform.

[0063] 10. Compressive strength: When pressure is gradually applied to both ends of the boxboard specimen, the maximum pressure at which the boxboard specimen begins to deform is divided by the cross-sectional area of ​​the boxboard specimen.

[0064] 11. Box board - the board that makes up the six sides of the box: length, width and height.

[0065] 12. Boxboard group - refers to a group of boxboards consisting of the outer panel, the middle interlayer corrugated board and the airbag, and the lining panel. A boxboard is formed by stacking several boxboard groups on each other.

[0066] 13. Pre-processing and forming - refers to the first forming process of the shape of the corrugated paper and the initial airbag shell before heat sealing according to the forming process requirements, generally using the vacuum forming or molding process.

[0067] 14. Airbag boxboard refers to the boxboard composed of the outer surface panel, the middle interlayer corrugated paper and the airbag, and the lining panel. That is, the boxboard with the airbag. It also includes the boxboard formed by stacking the boxboard groups. The middle interlayer corrugated paper and the airbag are referred to as the middle.

[0068] 15. Airbag shell - the outer shell of the airbag that wraps the compressed gas.

[0069] 16. Initial airbag shell: This is not the final shape of the airbag shell. It is the shape of the airbag shell during pre-forming before the airbag is inflated.

[0070] 17. The corrugated paper and the air bag group are arranged in a cyclical manner, namely, corrugated paper-air bag group-corrugated paper-air bag group-corrugated paper, arranged in a cyclical manner, with the corrugated paper at the beginning and the corrugated paper at the end.

[0071] 18. Unfolding - refers to the working state when the box is installed as if it is filled with items and the lid and bottom of the box have just been closed.

[0072] 19. Folding - the process of disassembling and folding an empty box in a certain order to reduce the volume of the space it occupies.

[0073] 20. Sheet material - a thin plate that can be processed again, generally a thermoplastic material or a rubber-like material.

[0074] 21. Several - that is, X or N, where X and N are positive integers greater than or equal to 1. In this specification, X represents the number of airbags in an airbag group; N represents the number of boxboard groups in a boxboard.

[0075] 22. Integrated: The box panels are formed by heat-sealing the connecting parts of the outer, middle and inner layers, which cannot be disassembled without destruction.

[0076] 23. The peripheral edge of the airbag shell is a similarly closed heat-sealed adhesive tape adjacent to the closed intersection line formed by the intersection of the airbag cylindrical shell and the flat portion of the sheet material.

[0077] 24. "V" corrugation - called triangular corrugation. Let the angle of the "V" corrugation be Q. The Q value should be between greater than or equal to 0° and less than 180°.

[0078] 25. "U" shaped corrugated paper - also called right angle corrugated paper. When the Q value is equal to 0°, that is, the two sides of the "V" corrugated paper are parallel, the corrugated paper changes from "V" shape to "U" shape.

[0079] That is, the "U"-shaped corrugation is a special case of the "V"-shaped corrugation when the angle Q is equal to 0°.

Claims

1. An airbag box panel, characterized in that The boxboard is composed of several boxboard groups stacked on each other; the middle layer of the boxboard group is composed of corrugated paper and airbag groups arranged in a cycle and interval arrangement in sequence, the outer layer is the outer surface panel, the inner layer is the lining panel, and it consists of three layers: outer, middle and inner; there are several airbags in the airbag group. The airbag shell and "V"-shaped corrugated paper of the airbag are pre-processed and formed on the same sheet material, and every two pieces are buckled together, along the The "V"-shaped corrugation and the intersection line edge of the airbag shell and the sheet material plane are bonded together by high-frequency heat sealing. At the same time, the airbag shell is inflated and heat-sealed to form a cylindrical airbag. The corrugation is a "V"-shaped structure. The two long straight lines at the vertices of the two "V"-shaped small arcs of the flat quadrilateral formed after the corrugation is bonded are respectively heat-sealed to the outer surface panel and the inner lining panel of the box panel group, so that the outer, middle and inner three layers of the box panel group are connected as a whole. The two long straight lines at the two outermost points of the airbag cylinder support the outer surface panel and the inner lining panel respectively, and are in contact with the inner and outer panels but are not connected and fixed. In addition to the airbag shell being bonded and sealed all around, the airbag The rest of the parts are in a free state to facilitate the compression and deformation of the airbags without hindrance; the airbags can increase the thickness and strength of the box board group without increasing the weight of the box board, so that the box board has anti-bending and vibration-absorbing effects; the several airbags, that is, X airbags, X is a positive integer greater than or equal to 1, and the value of X is determined by the specific box size, shape and purpose; the value of X can be variable, that is, the number of airbags in different airbag groups can be the same or different; the several box board groups, that is, N box board groups, N is a positive integer greater than or equal to 1; the value of N is determined by the specific box size, shape and purpose and the strength requirements of the box board.

2. An airbag box panel as claimed in claim 1, characterized in that The "V"-shaped angle Q value of the "V"-shaped corrugation is selected between greater than or equal to 0° and less than 180°; when Q is equal to 0°, the corrugation changes from a "V" shape to a "U" shape.

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