Buffer sheet making module and packaging bag making apparatus

Abstract

The application discloses a kind of buffer sheet production module for making buffer sheet, including unwinding first surface first unwinding unit;Buffer layer feeding unit of buffer layer unwinding;Buffer layer and / or first surface is applied with adhesive glue of sticking;Paper pressing unit, for first surface and buffer layer rolling clamping to stick;Cutting unit, cutting unit is set to the front end of paper pressing unit feeding direction, cutting unit is simultaneously spaced in feeding Rolling cutting buffer layer, the position of cutting is perpendicular to feeding direction;Wherein, buffer layer feeding unit is reduced according to the rate of change in cutting after feeding rate, so that the buffer layer of cutting forms an uncovered interval S on first surface, and interval S distance is synchronized with first surface after feeding and connection.The application also discloses a kind of buffer sheet production equipment.The buffer sheet production module solves the technical problems that the existing buffer sheet production efficiency is low, and the production module cannot be compatible with multiple different buffer layer structures.

Description

Technical Field

[0001] This invention relates to the field of express logistics, and more specifically, to a cushioning sheet manufacturing module and packaging bag manufacturing equipment. Background Technology

[0002] like Figure 1 The cushioning packaging bag 100a is formed by folding the bottom A and sealing the two sides B of a cushioning sheet 10a; or by using two cushioning sheets 10a with their sides sealed B and bottom A glued together. The bottom A glued together can be either directly glued to the bottom A of the two cushioning sheets 10a, or one of the bottom A of the two cushioning sheets 10a can be folded over and glued. Folding over and gluing means overlapping the two cushioning sheets 10a, folding the bottom A of one cushioning sheet 10a towards the bottom A of the other cushioning sheet 10a to wrap around the bottom A of the other cushioning sheet 10a, and then gluing the folded portion onto the other cushioning sheet 10a.

[0003] As can be seen from the manufacturing process of the cushioning packaging bag 100a above, the cushioning sheets 10a / 10b need to be manufactured first during the manufacturing process of the cushioning packaging bag 100a. The manufacturing speed of the cushioning sheets 10a directly affects the manufacturing efficiency of the packaging bag 100a.

[0004] See Figure 1 and Figure 2 Regarding the cushioning sheet 10a itself, it comprises at least two layers: an outer layer A1 and a cushioning layer B1. The outer layer A1 forms the outer wall of the packaging bag 100a after it is manufactured into the packaging bag 100a. The cushioning layer B1 is located inside the outer wall and is also used to hold objects within the packaging bag. Common cushioning sheets 10a can also include a three-layer structure, such as... Figure 3 The structure consists of an outer layer A1, a buffer layer B1, and an inner layer C1. The buffer layer B1 is located between the outer layer A1 and the inner layer C1. The buffer layer B1 can be a single layer or a multi-layer structure. The entire buffer layer B1, or at least a portion of the buffer layer B1, needs to be adhered to the outer layer A1 or the inner layer C1 to secure the buffer layer B1.

[0005] like Figures 4a-4d The buffer sheet 10a has the following types depending on the buffer layer B1:

[0006] 1. The cushioning layer has a corrugated paper structure with a wavy shape, such as... Figure 4a ;

[0007] 2. The buffer layer has a molded uneven structure, such as... Figure 4b ;

[0008] 3. The buffer layer is made of plastic bubble wrap, such as Figure 4c ;

[0009] 4. The buffer layer is a three-dimensional hexagonal grid structure formed by stretching slit paper, such as... Figure 4d The slit paper 20a refers to the paper material with cuts 21a. Multiple cuts 21a are arranged in rows and columns. The cuts 21a in the same row are spaced apart from each other, and the cuts 21a in adjacent rows are staggered. When such slit paper 20a is stretched, it will be twisted and stretched into a three-dimensional hexagonal opening 22a at the position of the cuts 21a, so that the slit paper 20a expands in the thickness direction, thus having a cushioning function.

[0010] Regardless of whether the existing cushioning sheets have a two-layer or three-layer structure, or whether the cushioning layer has one or more layers, and regardless of the specific structure of the cushioning layer described above, all of the cushioning layer must be adhered, in whole or in part, to the outer and / or inner layers during manufacturing. (See also...) Figure 5 When using automated equipment to manufacture the buffer sheet 10a, the outer and inner strips of the roll material need to be fed at the same time as the outer and inner strips of the roll material. The buffer layer B1, the inner layer and the outer layer A1 are stacked in the vertical direction while being fed. When the buffer layer B1 is pasted on the inner and / or outer strip A1, the buffer sheet 10a is formed. However, the buffer layer B1 itself has a buffering function and a certain thickness. When the buffer layer B1 is pasted with the inner layer and / or the outer layer A1, in addition to applying adhesive to the pasting position of the inner layer and / or the outer layer A1, it is also necessary to heat and press the buffer layer B1 and the inner / outer layer A1 at that position so that the applied adhesive has the maximum adhesive force and can firmly fix the buffer layer B1 to the inner layer and / or the outer layer A1. Moreover, during the pressing process, the buffer layer B1 needs to be pressed into a flat surface at the adhesive application position so that it can fully contact and fix with the adhesive application surface of the outer layer and / or the inner layer.

[0011] When manufacturing cushioning sheets using this process, the heating and pressing processes are time-consuming. Pressing requires a short period to flatten the cushioning layer, and the applied adhesive also needs to be heated for a time. When the manufacturing equipment uses an intermittent step-feed method—that is, feeding for a period, then stopping—the heating and pressing structure heats and presses the areas where the cushioning layer and inner / outer layers need to be bonded during the stop time. After heating and pressing, feeding continues for a period, then stops, and this process is repeated. Additionally, in some equipment, the cushioning sheet needs to be reheated after heating and pressing to dry it and further cure the adhesive. Because the feeding is stopped for a period in this manufacturing equipment, the overall production efficiency of the cushioning sheets is reduced; this step-feed manufacturing equipment can produce no more than 50 meters of cushioning sheet length per minute.

[0012] On the other hand, when two strip-shaped cushioning sheets are fed together and stacked to make a cushioning packaging bag, the two strip-shaped cushioning sheets need to be glued at intervals in the feeding direction, and the glued areas need to be heated and pressed together. The intervals where glue was applied form the two sides of the packaging bag after cutting. In other words, when making a cushioning packaging bag from cushioning sheets, heating and pressing are also required to fix the two cushioning sheets together to form a cushioning packaging bag, and the aforementioned technical problem of low production efficiency also needs to be overcome.

[0013] Furthermore, the heating and pressing time is related to the structure of the buffer layer itself. The better the buffering effect of the buffer layer, the longer the heating and pressing time will be, because the buffer layer is more difficult to press into a flat surface and requires a longer contact time with the glue to be fixed. For such manufacturing equipment, different step feeding methods need to be set according to the production of different buffer layers, buffer sheets and buffer packaging bags, that is, step feeding time and step stopping time. This makes it difficult to form a buffer sheet and buffer packaging bag manufacturing equipment that can be compatible with all structures. Summary of the Invention

[0014] The purpose of this invention is to provide a buffer sheet manufacturing module, which aims to solve the technical problems of low manufacturing efficiency of existing buffer sheets and the inability of the manufacturing module to be compatible with various different buffer layer structures.

[0015] This invention provides a buffer sheet manufacturing module, comprising:

[0016] The first unwinding unit is used to unwind the first surface and continuously feed the first surface along the unwinding direction;

[0017] A buffer layer feeding unit is used to continuously feed a buffer layer along a feeding direction, the buffer layer being located on one side of the first surface; the buffer layer and / or the first surface are coated with adhesive for bonding the first surface and the buffer layer on a surface facing the other first surface or buffer layer;

[0018] A paper-pressing unit is used to roll and clamp the first surface and the buffer layer at the location where adhesive is applied on the first surface and / or the buffer layer to adhere them, so as to fix the first surface and the buffer layer.

[0019] A cutting unit is provided at the front end of the paper pressing unit in the feeding direction. The cutting unit rolls and cuts the buffer layer at intervals while feeding the paper, and the cutting position is perpendicular to the feeding direction.

[0020] The cut buffer layer forms a first end and a second end in the order of cutting. The cut buffer layer is then fed to the paper pressing unit from the first end to the second end, and is clamped and fixed to the first surface by the paper pressing unit together with the first surface.

[0021] The first unwinding unit has a first feed rate a; the buffer layer feed unit has a variable second feed rate b, the second feed rate b includes a rate b1 and a rate b2, the rate b2 is the same as the first feed rate, and the rate b1 is less than the first feed rate a.

[0022] A gap S is formed on a first surface between the first end of the cut buffer layer and the second end of the cut previous buffer layer; after the cutting unit cuts the buffer layer, the buffer layer feeding unit continuously feeds the buffer layer at a rate b1 less than the first feeding rate a until the buffer layer leaves the gap S relative to the first surface and the first end is fixed on the first surface, and then feeds it continuously and synchronously with the first surface at the rate b2.

[0023] The present invention also discloses a second type of cushioning sheet manufacturing module, wherein the cushioning sheet manufacturing module includes:

[0024] The first unwinding unit is used to unwind the first surface and continuously feed the first surface along the unwinding direction;

[0025] The third unwinding unit is used to unwind the third surface and continuously feed the third surface along the unwinding direction. The third surface has multiple pleats perpendicular to the unwinding direction.

[0026] A slit paper unwinding unit is used to unwind slit paper, so that the slit paper is continuously fed along the unwinding direction. The slit paper is located between the first surface and the third surface. Adhesive is provided on both ends of the slit paper relative to the third surface, or on the third surface relative to the slit paper, at a position along the feeding direction. Adhesive is also provided on one end of the slit paper relative to the first surface, or on the first surface relative to the slit paper, at a position along the feeding direction.

[0027] A paper clamping unit is used to roll and clamp the first surface and the slit paper at the position where the glue is applied to fix the first surface and the slit paper only at one end, and to roll and clamp the third surface and the slit paper at the position where the glue is applied to fix both ends of the third surface and the slit paper.

[0028] A cutting unit is provided at the front end of the paper pressing unit in the feeding direction. The cutting unit rolls and cuts the slit paper at intervals while feeding the paper, and the cutting position is perpendicular to the feeding direction.

[0029] The cut slit paper forms a first end and a second end in the order of cutting. The cut slit paper is fed to the paper pressing unit from the first end to the second end. The paper pressing unit fixes one end of the slit paper on a first surface and fixes both ends of the slit paper on a third surface. After fixing the slit paper, the first surface forms a gap S that does not cover the slit paper and is perpendicular to the feeding direction. There are multiple gaps S, which are arranged at intervals with the feeding direction of the first surface. After the slit is fixed on the first surface, at least two cut slit papers are placed between two adjacent gaps S.

[0030] The first unwinding unit has a first feed rate a; the slit paper unwinding unit has a variable second feed rate b, the second feed rate b includes rate b1, rate b2 and rate b3, the rate b2 is the same as the first feed rate a, the rate b1 is less than the first feed rate a, and the rate b3 is greater than the first feed rate a.

[0031] When the first end of the cut slit paper is located at the cut-off position of the interval S, the slit paper unwinding unit feeds the slit paper at a rate b2, so that the slit paper is fed synchronously with the first surface; when the second end of the cut slit paper is fed between two adjacent intervals S, the slit paper unwinding unit feeds the slit paper at a rate b3, and the first end of the slit paper fed at a rate b3 overlaps with the second end of the previous cut slit paper. After the slit paper overlaps, the slit paper unwinding unit continues to feed the slit paper at a rate b2 until the second end of the next cut slit paper is located at the starting position of another adjacent interval S. Then, the slit paper unwinding unit feeds the slit paper at a rate b1, so that the second end of the next slit paper is located at the cut-off position of the interval S relative to the first surface. The slit paper unwinding unit feeds the slit paper again at a rate b2, thereby forming two partially overlapping slit papers in two adjacent intervals S of the first surface.

[0032] This invention discloses a packaging bag manufacturing device, which includes two cushioning sheet manufacturing modules. The cushioning sheet manufacturing modules are used to manufacture cushioning sheets. The cushioning sheets manufactured by the two cushioning sheet manufacturing modules are a first sheet and a second sheet, which are identical. The first sheet and the second sheet are opposite to each other and fed synchronously.

[0033] A first bagging adhesive application unit is used to apply adhesive to the surface of the first sheet and / or the second sheet facing another second sheet or the first sheet. The positions of the first bagging adhesive application units are spaced apart and perpendicular to the feeding direction. The positions of the first bagging adhesive application units correspond to the interval S of the first sheet or the second sheet. The buffer layer of the first sheet is relative to the buffer layer of the second sheet.

[0034] The first bag-forming pressing unit is used to roll and press the first sheet and the second sheet together, and press the first sheet and the second sheet together at a position corresponding to the interval S, thereby forming two sides of the packaging bag.

[0035] The present invention discloses another packaging bag manufacturing device, which includes two second type of cushioning sheet manufacturing modules. The second type of packaging bag manufacturing device of the present invention includes two second type of cushioning sheet manufacturing modules, and the second type of cushioning sheet manufactured by the two second type of cushioning sheet manufacturing modules is fed synchronously with its third side facing each other, and is pressed and bonded to each other at a interval S.

[0036] The buffer sheet manufacturing module disclosed in this invention can be compatible with the production of buffer layers with various different structures. At the same time, no buffer layer is set when pressing and pasting at adjacent intervals S. Compared with the prior art, the buffer layer does not need to be flattened at the intervals S, and no more pressing and heating time is required. In addition, the continuous feeding method is adopted, and the buffer layer is formed by using different feeding rates. Overall, the production efficiency is greatly improved. Attached Figure Description

[0037] “ Figures 1 to 3 , Figures 4a-4d , Figure 5 Comparison diagram of existing technologies;

[0038] Figure 6 This is a schematic diagram of a buffer sheet manufacturing module according to Embodiment 1 of the present invention;

[0039] Figure 7 This is a schematic diagram of the cutting unit of the present invention;

[0040] Figures 8a to 8e This is a schematic diagram of the adhesive application location on the first surface or buffer layer of the present invention;

[0041] Figure 9 This is a schematic diagram of the process of forming a packaging bag using a buffer sheet manufacturing module according to Embodiment 1 of the present invention;

[0042] Figure 10 This is a schematic diagram of the buffer sheet manufacturing module in Embodiment 2 of the present invention;

[0043] Figure 11 This is a schematic diagram of the buffer sheet manufacturing module in Embodiment 3 of the present invention;

[0044] Figure 12 This is a schematic diagram of the rolling unit structure of the present invention;

[0045] Figure 13 This is a schematic diagram of the buffer layer structure in Embodiment 4 of the present invention;

[0046] Figure 14 This is a schematic diagram of the buffer sheet manufacturing module in Embodiment 4 of the present invention;

[0047] Figure 15 This is a schematic diagram of the buffer sheet structure after it has been manufactured according to Embodiment 4 of the present invention;

[0048] Figure 16 This is a schematic diagram of the buffer sheet structure produced according to Embodiment 5 of the present invention;

[0049] Figure 17 This is a schematic diagram of the buffer layer fabrication process in Embodiment 5 of the present invention;

[0050] Figure 18 This is a schematic diagram of the buffer sheet manufacturing module in Embodiment 5 of the present invention;

[0051] Figure 19 This is a schematic diagram of the buffer layer fabrication process in Embodiment Six of the present invention;

[0052] Figure 20 This is a schematic diagram of the buffer sheet manufacturing module in Embodiment Six of the present invention;

[0053] Figure 21 This is a schematic diagram of the packaging bag manufacturing equipment in Embodiment 7 of the present invention;

[0054] Figure 22 This is a schematic diagram of the packaging bag making equipment in Embodiment 8 of the present invention;

[0055] Figure 23 This is a schematic diagram of the adhesive application position of the buffer sheet in Embodiment 8 of the present invention;

[0056] Figures 24 to 27 This is a schematic diagram of the packaging bags produced according to Embodiments 7 and 8 of the present invention. Detailed Implementation

[0057] The present invention will be further described and illustrated below with reference to specific embodiments and the accompanying drawings:

[0058] Implementation Method 1:

[0059] Please refer to Figure 6The present invention discloses a buffer sheet manufacturing module 100 for manufacturing buffer sheet C1, which includes: a first unwinding unit 10, a buffer layer feeding unit 20, a paper pressing unit 30 and a cutting unit 40.

[0060] The first unwinding unit 10 is used to unwind the first surface A1 and continuously feed the first surface A1 along the unwinding direction; continuous feeding in this application refers to uninterrupted and continuous conveying or unwinding, which is different from step feeding.

[0061] The buffer layer feeding unit 20 is used to continuously feed the buffer layer B1 along the feeding direction. The buffer layer B1 is located on one side of the first surface A1. The buffer layer B1 and / or the first surface A1 are coated with adhesive for bonding the first surface A1 and the buffer layer B1 on a surface facing the other first surface A1 or buffer layer B1. The adhesive can be applied before unwinding or during the feeding process of the first surface A1 or buffer layer B1. It is only necessary to ensure that the adhesive can bond the first surface A1 and the buffer layer B1 or at least a part of them are bonded together without detaching.

[0062] The paper pressing unit 30 is used to roll and clamp the first surface A1 and the buffer layer B1 at the positions where glue is applied on the first surface A1 and / or the buffer layer B1 to fix the first surface A1 and the buffer layer B1. The paper pressing unit 30 also rolls continuously, and the rolling speed is the same as and synchronized with the unwinding speed of the first unwinding unit 10. This can ensure that the first surface A1 and the buffer layer B1 are completely fixed at the glued positions as much as possible, and there is no situation where the glued positions are not fixed.

[0063] The cutting unit 40 is located at the front end of the paper pressing unit 30 in the feeding direction, that is, on the side close to the first unwinding unit 10. The cutting unit 40 rolls and cuts the buffer layer B1 at intervals while feeding, and the cutting position is perpendicular to the feeding direction.

[0064] In this embodiment, the intermittent cutting can cut the buffer layer B1 into multiple independent buffer units B0, while the rolling cutting can cut the buffer layer B1 synchronously with the feeding process, without affecting the feeding process, thus saving time and improving production efficiency.

[0065] like Figure 7 The cutting unit 40 includes a roller cutting wheel 41 and a roller cutting blade 410 disposed on the circumferential surface of the roller cutting wheel 41 and perpendicular to the end face of the roller cutting wheel 41. When the roller cutting wheel 41 rotates to the point where the roller cutting blade 410 contacts the buffer layer B, the roller cutting blade 410 cuts the buffer layer B at a position perpendicular to the feeding direction as it rotates, thereby forming the buffer unit B0.

[0066] Combination Figure 6 In particular, the cut buffer layer B1 is separated into buffer units B0. Each buffer unit B0 forms a first end x1 and a second end x2 according to the cutting sequence. The buffer unit B0 is sequentially fed to the paper pressing unit 30 from the first end x1 to the second end x2, and is clamped and fixed to the first surface A1 by the paper pressing unit 30 together with the first surface A1.

[0067] The first unwinding unit 10 has a first feeding rate a; the buffer layer feeding unit 20 has a variable second feeding rate b, the second feeding rate b includes a rate b1 and a rate b2, the rate b2 is the same as the first feeding rate, and the rate b1 is less than the first feeding rate a.

[0068] A gap S is formed on the first surface A1 between the first end x1 of the cut buffer unit B0 and the second end x2 of the previously mentioned buffer unit B0. When the cutting unit 40 cuts the buffer layer B1, the buffer layer feeding unit 20 continuously feeds the buffer layer B1 at a rate b1 less than the first feeding rate a until the buffer layer B1 leaves the gap S relative to the first surface A1, and the first end x1 is fixed on the first surface A1. Then, the buffer layer B1 is continuously and synchronously fed with the first surface A1 at the rate b2. The buffer layer B1 is fed synchronously at the rate b2 until it reaches the second end x2 of the buffer layer B1. Then, the cutting unit 40 rotates to the cutting position again, and the buffer unit B0 is separated after cutting. At this time, the first end x1 and the second end x2 of the buffer unit B0 pass through the paper pressing unit 30 in sequence and are fixed on the first surface A1. The buffer layer feeding unit 20 then feeds the buffer layer B0 continuously at the rate b1 again, leaving the gap S on the first surface. Then, the feeding continues in the above feeding method to produce the buffer sheet C1.

[0069] like Figure 6 In this embodiment, the buffer layer B1 includes a pad B11, the cross-section of which is at least one of the following: a corrugated paper structure with a wave-shaped shape, a concave-convex structure, a plastic bubble wrap, or a three-dimensional hexagonal grid structure after the slit paper is stretched.

[0070] In this embodiment, the first unwinding unit 10 continuously unwinds at a fixed feed rate a, while the buffer layer B1 is fed at a varying rate b and cut at a predetermined interval S with the cutting unit 40, thereby distributing the buffer units B0 at intervals on the first surface 10 and feeding them together with the first surface 10 to the paper pressing unit 30. The buffer sheet C1 does not need to be heated and pressed between the first surface 10 and the buffer layer B1, and in particular, it does not need to be pressed into a planar structure, which saves heating and pressing time. The buffer units B0 only need to be guided in the feed direction and placed on the first surface 10 to fix the buffer units B0 on ​​the first surface.

[0071] like Figure 6 In this invention, the manufacturing module 100 includes a first adhesive application unit 50, which is used to continuously apply adhesive to the buffer layer B1 and / or the first surface A1 on a surface facing another first surface A1 or buffer layer 50 for bonding the first surface A1 and the buffer layer B1. The adhesive application position of the first adhesive application unit 50 is located on the first surface A1 or the buffer layer B1, and at least one side along the delivery direction.

[0072] In this invention, the first adhesive application unit 50 applies adhesive along the feeding direction, that is, the portion fed first is applied first, and the portion applied later is applied later, and the adhesive application trajectory is along the feeding direction; the adhesive application position is located on at least one surface opposite to each other on the first surface A1 or the buffer layer B1. In other words, the adhesive application position can be on the surface of the first surface A1 facing the buffer layer B1, and / or the surface of the buffer layer B1 facing the first surface A1. The adhesive application range of "at least one side" includes any of the following:

[0073] A. The adhesive application area covers the entire surface of the first surface A1 or the buffer layer B1, such as... Figure 8a ;

[0074] B. The adhesive application area covers the entire surface of the first surface A1 or the buffer layer B1 relative to the two adjacent intervals S, such as... Figure 8b ;

[0075] C. The adhesive application area is a portion of the surface of the first surface A1 or the buffer layer B1 relative to the two adjacent intervals S, such as... Figure 8c ;

[0076] D. The adhesive application area is located on the side edge of the first surface A1 or the buffer layer B1 along the feeding direction, near the edge, such as... Figure 8d ;

[0077] E. The adhesive is applied to the two sides of the first surface A1 or the buffer layer B1, close to the edge along the feeding direction, such as... Figure 8e .

[0078] In this invention, the location for applying adhesive needs to be reasonably selected and verified based on the structural characteristics of the pad B11 in the buffer layer B1 and the delivery rate.

[0079] For example, when the pad B11 is plastic bubble wrap, since the plastic bubble wrap itself is relatively soft and has strong extensibility, the first gluing unit 50 can apply glue according to the gluing range A or the gluing range B. At this time, due to the extensibility and softness of the plastic bubble wrap, it is easy to stick between the two intervals S of the entire first surface A1, which has no effect on the feeding rate and can maximize the feeding rate.

[0080] For example, when the pad B11 is a corrugated paper structure, due to the relatively high rigidity of the corrugated paper and its wavy surface, it is not suitable to use the glue application range A. Using the glue application range A will inevitably reduce the feeding rate due to the large glue application range. Therefore, the glue application range C or glue application range E can be used. In this case, less glue is applied, which can increase the feeding speed. At the same time, only the two sides of the corrugated paper structure need to be fixed. After the two sides of the corrugated paper structure are fixed, the area in the middle of the two sides can maintain the integrity of its wavy shape as much as possible without reducing the cushioning performance.

[0081] For example, when the pad B11 is a hexagonal mesh structure, the adhesive can be applied according to the application range C or D. The two sides of the hexagonal mesh structure are fixed to the two ends of the buffer sheet in the transverse direction along the feeding direction or in the vertical direction perpendicular to the feeding direction. In this way, on the one hand, the middle of the hexagonal mesh structure is not fixed to the first surface A1, which has better buffering performance. On the other hand, fixing only the two ends can also prevent the stretched hexagonal mesh structure from rebounding to the state before stretching, which can improve the buffering performance of the hexagonal mesh structure, while also taking into account the feeding rate.

[0082] like Figure 9In particular, when using the cushioning sheet C1 in this embodiment to make the packaging bag 200, only two cushioning sheet making modules 100 are needed to produce two cushioning sheets C1. During the synchronous and continuous feeding of the two cushioning sheets C1, the interval S between the two sheets is aligned, and they are fixed at the interval S, sealing the bottom edge. At the rear end of the feeding process, the packaging bag 200 is formed by cutting at the fixed interval S. The formed packaging bag 200 does not have a cushioning layer B1 or a cushioning unit B0 on ​​either side, i.e., at the interval S. Therefore, when fixing at the side (interval S) position, there is no need for a long pressing time or heating waiting, which maximizes production efficiency. Furthermore, during the pressing process, it is not necessary to press the entire area containing the buffer layer B1 or buffer unit B0; only the side edges (spacement S) need to be pressed. This avoids pressing the buffer layer B1 and buffer unit B0 directly, preventing damage or reduction of their buffering performance. It also prevents issues such as reduced thickness of buffer unit B0 and decreased buffering performance due to excessive pressure.

[0083] Implementation Method 2

[0084] like Figure 10 The difference between this embodiment and Embodiment 1 is that the buffer layer B2 includes two padding layers (B11, B12), which are padding B11 and padding B12 respectively. In this embodiment, the buffer layer B2 may also include two or more padding layers (B11, B12). The padding B1 and padding B2 include at least one of the following: a corrugated paper structure with a wavy cross-section, an embossed structure, plastic bubble wrap, or a three-dimensional hexagonal grid structure formed by stretching slit paper.

[0085] In other words, padding B11 and padding B12 can be the same, for example, both being corrugated paper structures; padding B11 and padding B12 can also be different, for example, padding B11 is a corrugated paper structure, while padding B12 is a plastic bubble wrap.

[0086] In this embodiment, the buffer layer B2 has two pads B11 and B12. The manufacturing module 100 includes multiple cutting units 40 and multiple first adhesive application units 50. The buffer layer feeding unit 20 includes multiple pad feeding units 21. The number of pad feeding units 21, first adhesive application units 50, cutting units 40, and pads (B11, B12) are the same, and there are two of each. Each pad feeding unit 21 is used to feed one layer of pad B11. At least one first adhesive application unit 50 is used to continuously apply adhesive to the surface of one side of pad B11 facing the other layer of pad B12, with the adhesive application position along at least one side of the feeding direction. That is, applying adhesive to at least one surface of pad B11 opposite to the first surface A1 and at least one surface of pad B12 opposite to pad B11 enables the first surface A1, pad B11, and pad B12 to be connected to each other. Each cutting unit 40 is used to cut one layer of the pad B. The two layers of pad B11 and pad B12 are stacked one on top of the other and fed continuously and synchronously at a varying feeding rate b. After cutting, the two pad units BO are also stacked one on top of the other to form a multi-layer structure.

[0087] In this process, one layer of the pad B11 is cut and then connected to the adjacent layer of the pad B12 at a continuous adhesive application position.

[0088] In this embodiment, the location of continuous adhesive application is the same as any of the adhesive application ranges AE in Embodiment 1, and it also needs to be selected according to the material of the pads (B11, B12) and the delivery rate. The difference is that when the pads (B11, B12) have two layers, at least one first adhesive application unit 50 applies adhesive to at least one of the opposing surfaces of the two pads (B11, B12) so that the two pads (B11, B12) are connected to each other and fixed together as a whole on the first surface A1.

[0089] In this embodiment, without reducing the feeding rate a in Embodiment 1, the production of the multi-layer padding structure buffer sheet C2 can be achieved during the feeding process, which can make the buffer sheet C2 have a better buffering effect than the buffer sheet C2 in Embodiment 1.

[0090] Implementation Method 3

[0091] like Figure 11In this embodiment, the buffer sheet manufacturing module 100 further includes, based on embodiment one or embodiment two, a second unwinding unit 60, a second gluing unit 70, and a rolling unit 80. The second unwinding unit 60 is used to unwind the second surface A2, with the first surface A1 and the second surface A2 being fed synchronously and continuously. The buffer layer B3 is either the buffer layer B1 in embodiment one or the buffer layer B3 in embodiment two. The buffer layer B3 is located between the first surface A1 and the second surface A2, meaning that the second surface A2 and the first surface A1 have the same feeding rate a, and the first surface A1 and the second surface A2 are fed synchronously.

[0092] The application position of the second adhesive application unit 70 is: x) the second surface A2 faces the first surface A1 and adhesive is applied at a position S away from the first surface A1; or y) the first surface A1 faces the second surface A2 and adhesive is applied at a position S away from the first surface A1.

[0093] The rolling unit 80 is used to roll and press the first surface A1 and the second surface A2 at the interval S opposite to each other, thereby fixing the first surface A1 and the second surface A2 in a direction perpendicular to the feeding direction. The cut buffer layer B3 is located between two adjacent intervals S and is wrapped by the first surface A1 and the second surface A2.

[0094] The second adhesive application unit 70 can also be used to continuously apply adhesive to the surface of the second surface A2 facing the first surface A1, with the adhesive application position at least one side along the feeding direction, for connecting the first surface A1 and the second surface A2 in the feeding direction; wherein the adhesive application position of "at least one side" is the same as at least one of the adhesive application positions AE in Embodiment 1, and at this time the rolling unit 80 is used to roll and press the edges of the adhesive application positions of the first surface A1 and the second surface A2 that are opposite to each other and used to fix them together.

[0095] In this embodiment, the second adhesive application unit 80 can apply adhesive to fix the first surface A1 and the second surface A2 at different locations depending on the fixing method and position. One method is to fix the first surface A1 and the second surface A2 to each other at interval S, with the buffer layer B3 located between two adjacent intervals S. Another method is to fix the first surface A1 and the second surface A2 near at least one edge along the feeding direction, with the buffer layer B3 also located between two adjacent intervals S. In this embodiment, the method of fixing the first surface A1 and the second surface A2 can be determined based on the material of the selected buffer layer B3 and the number of pads (B11, B12) in the buffer layer B3.

[0096] In this embodiment, the cushioning sheet C3 is a structure with three or more layers sandwiched between a first surface A1, a cushioning layer B, and a second surface A2. The cushioning layer B can be one or more layers depending on the number of padding layers. Compared to embodiments one and two, this embodiment adds a second surface A2. The method of using the first surface A1 and the second surface A2 to sandwich the cushioning layer B in the cushioning sheet C3 improves the wear resistance of the cushioning sheet C2 and also makes the cushioning sheet C3 look more aesthetically pleasing and smoother, which is beneficial for making packaging bags from the cushioning sheet C3.

[0097] like Figure 12 In this invention, the rolling unit 80 includes at least one set of pressure rollers 81, each pressure roller 81 having a pressure protrusion 82. The pressure protrusion 82 is perpendicular to the feeding direction and extends outward from one end or the outer periphery of the pressure roller 81. When the pressure roller 81 rotates, the pressure protrusion 82 presses and fixes the first surface A1, the buffer layer B3 or the buffer unit B0, and the second surface A2 only at intervals S, so that the buffer layer B3 or the buffer unit B0 between two adjacent intervals S remain in a three-dimensional grid structure and are not affected by the pressing.

[0098] Implementation Method 4

[0099] In this embodiment, the buffer sheet manufacturing module 100 is improved based on the first embodiment to produce the buffer sheet C4.

[0100] like Figure 13 and Figure 14 In this embodiment, the buffer layer B4 includes: an unstretched slit paper B13 and a third surface A3.

[0101] The buffer sheet manufacturing module 100 further includes a third unwinding unit 90 and a slit paper unwinding unit 10a.

[0102] Specifically, the third unwinding unit 90 is used to unwind the third surface A3 and continuously feed the third surface A3 along the unwinding direction. The third surface A3 has multiple pleats A31 along the unwinding direction. The pleats A31 are unwound together with the third surface A3 and are in an unstretched state. The slit paper unwinding unit 10a is used to unwind the slit paper B13 and continuously feed the slit paper B13 along the unwinding direction. The slit paper B13 is located between the first surface A1 and the third surface A3.

[0103] The slit paper B13 is unwound synchronously with the third surface A3, and the slit paper B13 and the third surface A3 are connected to each other on both sides y1 along the feeding direction.

[0104] The buffer layer B4 in this embodiment is different from the buffer layer in Embodiment 1. Specifically, in this embodiment, the buffer layer B4 is formed by connecting the slit paper B13 and the third surface A3; the glue applied by the first gluing unit 50 is only located on the surfaces of the first surface A1 or the buffer layer B13 that are opposite to each other, and is disposed along one side y2 of the feeding direction, thereby connecting the buffer layer B4 on one side y2 of the first surface A1. That is to say, in this embodiment, the first gluing unit 50 corresponds to the gluing area D in Embodiment 1. Figure 8d Apply adhesive in this manner.

[0105] like Figure 15 After the first surface A1 and the buffer layer B4 are connected, a buffer sheet C4 is formed. The buffer sheet is fixed to each other on one side y2 along the feeding direction, while the other side y3 along the feeding direction is in an unfixed and separated state.

[0106] The width of the slit paper B3 and the third surface A3 perpendicular to the feeding direction is smaller than the width of the first surface A1. When the third surface A3 moves toward the other side y3 of the first surface A1, the folds A31 on the third surface A3 are unfolded, which simultaneously moves the slit paper B13 connected to the third surface A3, thereby stretching the slit paper B13. The stretched slit paper B13 forms a three-dimensional grid structure, thus providing cushioning performance.

[0107] In this embodiment, the cushioning sheet C4 is a planar structure before the slit paper B13 is stretched. After the slit paper B13 in the cushioning sheet C4 is stretched, the thickness increases. Therefore, the cushioning sheet C4 in this embodiment is a planar structure during transportation and storage, which can reduce transportation costs. In use, the slit paper B13 can be stretched by pushing the third surface A3, thereby becoming a three-dimensional structure, which is used to cushion and wrap the items.

[0108] Alternatively, the cushioning sheet C4 in this embodiment can be used to make packaging bags.

[0109] Implementation Method 5

[0110] In this embodiment, the buffer sheet manufacturing module 100 is improved based on embodiment four to produce buffer sheet C5.

[0111] The produced cushioning sheet C5, such as Figure 16 See also Figure 17In this embodiment, the buffer sheet C5 differs from the buffer sheet C4 in embodiment four only in the buffer layer B5. The difference in buffer layer B5 is that the third surface A3 does not have pleats A31, and the third surface A3 is only connected to one side y11 of the slit paper B13 along the feeding direction, while the other side of the third surface A3 along the feeding direction is not connected to the slit paper B13. At the same time, the buffer sheet C5 also includes a fourth surface A4, which is only connected to the other side y12 of the slit paper B13 along the feeding direction, while the other side of the fourth surface A4 along the feeding direction is not connected to the slit paper B13. The side of the third surface A3 that is not connected to the slit paper B13 and the side of the fourth surface A4 that is not connected to the slit paper B13 are overlapped but not connected, forming an overlapping area Z.

[0112] When the third surface A3 moves toward the other side y3 of the first surface A1, the overlapping area Z is expanded, which in turn moves the slit paper B13 connected to the third surface A3, causing the slit paper B13 to be stretched. The stretched slit paper B13 forms a three-dimensional grid structure, thus having a buffering performance.

[0113] In this embodiment, the buffer sheet C5 is a planar structure before the slit paper B13 is stretched. After the slit paper B13 in the buffer sheet C5 is stretched, the thickness increases. Therefore, the buffer sheet C54 in this embodiment is a planar structure during transportation and storage, which can reduce transportation costs. In use, the slit paper B13 can be stretched by pushing the third surface A3, thereby becoming a three-dimensional structure, which is used to cushion and wrap the items.

[0114] Alternatively, the cushioning sheet C5 in this embodiment can be used to make packaging bags.

[0115] Therefore, the buffer sheet manufacturing module 100 in this embodiment further includes: a fourth unwinding unit 11a, which is used to unwind the fourth surface A4. The fourth surface A4 partially overlaps the third surface A3 to form an overlapping area Z. The overlapping area Z is unwound synchronously with the third surface A3 and the fourth surface A4. The width of the unwound third surface A3 and the fourth surface A4 perpendicular to the feeding direction after overlapping is smaller than the width of the first surface A1. The slit paper B13 is also in an unstretched state and is fixed to the side y12 of the third surface A3 and the side y11 of the fourth surface A4. Simultaneously, the first gluing unit 50 still applies glue to the first surface A1 or the slit paper A13 according to the gluing area D method of Embodiment 1.

[0116] Implementation Method Six

[0117] like Figure 19 and Figure 20This embodiment is an improvement on embodiment four or embodiment five. The difference between this embodiment and embodiment four or embodiment five is that the buffer sheet making module 100 is used to make the buffer sheet C6, and the buffer sheet making module 100 also includes a slit paper cutting unit 12a.

[0118] The slit paper cutting unit 12a is located at the front end of the paper pressing unit 30 in the feeding direction. The slit paper cutting unit 10a rolls and cuts the slit paper B13 at intervals while feeding, and the cutting position is perpendicular to the feeding direction.

[0119] In this embodiment, adhesive is provided on both ends of the slit paper B13 relative to the third surface A3, or on the third surface A3 relative to the slit paper B13 at a position along the feeding direction; adhesive is provided on the slit paper relative to the first surface, or on the first surface relative to the slit paper at a position along the feeding direction at a position along the feeding direction.

[0120] In this process, the cut slit paper B13 forms a first end x1 and a second end x2 in the order of cutting. The cut slit paper B13 is sequentially fed to the paper pressing unit 30 from the first end x1 to the second end x2. During the feeding process, the paper pressing unit 30 fixes the two sides of the slit paper B13 along the feeding direction onto the third surface A3. On the first surface A1, gaps S are formed at positions not covered by the slit paper B13 and perpendicular to the feeding direction. There are multiple gaps S, which are arranged at intervals along the feeding direction of the first surface A1. At least two cut slit papers B13 are placed between two adjacent gaps S. That is, after the slit paper cutting unit 12a cuts the slit paper B13, the two sides of the slit paper B13 are sequentially fixed onto the third surface A3, and then the slit paper is cut... Unit 12a continues to cut the slit paper B13 and accelerates the feeding of the re-cut slit paper B13, so that the re-cut slit paper B13 overlaps with the previously cut slit paper B13 in at least a part of the area, forming an overlapping area D. Then, as the feeding continues, the re-cut slit paper B13 is fixed on the third surface A3 in the same way as the previously cut slit paper B13. Finally, the slit paper cutting unit 10a cuts the slit paper B13 again. The cutting position of the slit paper B13 cut here is opposite to the interval S as the slit paper B13 and the first surface A1 continue to be fed. When the re-cut slit paper B13 moves to the interval S, the slit paper unwinding unit 10a reduces the feeding speed and, after leaving an interval S on the first surface A1, resumes the same feeding speed as the first surface A1 as the first surface A1 is fed.

[0121] Specifically, the first unwinding unit has a first feed rate a; the slit paper unwinding unit has a variable second feed rate b, the second feed rate b includes rate b1, rate b2 and rate b3, the rate b2 is the same as the first feed rate a, the rate b1 is less than the first feed rate a, and the rate b3 is greater than the first feed rate a.

[0122] When the first end x1 of the cut slit paper B13 is located at the cut-off position of the interval S, the slit paper unwinding unit 10a feeds the slit paper B13 at a rate b2, so that the slit paper B13 is fed synchronously with the first surface A1; when the second end x2 of the cut slit paper B13 is fed between two adjacent intervals S, the slit paper unwinding unit 10a feeds the slit paper B13 at a rate b3, and the first end x1 of the slit paper B13 fed at a rate b3 overlaps with the second end x2 of the previous cut slit paper B13, when the slit paper B13... After overlapping, the slit paper unwinding unit 10a continues to feed the slit paper B13 at a rate b2 until the second end x2 of the next cut slit paper B13 is at the starting position of the adjacent interval S. Then, the slit paper unwinding unit 10a feeds the slit paper B13 at a rate b1 so that the second end x2 of the next slit paper B13 is at the ending position of the interval S relative to the first surface A1. The slit paper unwinding unit 10a feeds the slit paper B13 again at a rate b2, thereby forming two partially overlapping slit papers B13 in the two intervals S adjacent to the first surface A1.

[0123] In this embodiment, the paper pressing unit 30 is used to roll and clamp the first surface A1 and the slit paper B13 at the position where the adhesive is applied, and to roll and clamp the third surface A3 and the slit paper B13 at the position where the adhesive is applied to fix the two ends of the third surface A3 and the slit paper B13.

[0124] In this embodiment, when the fourth surface A4 of embodiment five is also present, one side of the slit paper B13 along the feeding direction is fixed to the side of the third surface A3, and the other side of the slit paper B13 along the feeding direction is fixed to one side of the fourth surface A4, thereby completely covering the third surface A3 and the fourth surface A4 with the slit paper B13, forming the buffer sheet C6.

[0125] In this embodiment, since the slit paper B13 is fixed to the third surface A3 and / or the fourth surface A4 in an unstretched state, when the slit paper B13 is stretched perpendicular to the feeding direction, it forms a three-dimensional mesh structure. The length perpendicular to the feeding direction will increase, but the width of the slit paper B13 along the feeding direction will decrease. When two pieces of slit paper B13 stacked together are used to make the buffer unit B0, even after the slit paper B13 is stretched into a three-dimensional mesh structure, the loss in the width direction can be minimized, ensuring that the buffer unit B0 can cover the maximum area and improve the buffering capacity.

[0126] Implementation Method Seven

[0127] like Figure 21 as well as Figures 24 to 27 The present invention also discloses a packaging bag manufacturing device 200, which includes two cushioning sheet manufacturing modules 100. The cushioning sheet manufacturing modules 100 are used to manufacture at least one cushioning sheet (C1, C2, C3) in embodiments one to three. The cushioning sheets (C1, C2, C3) manufactured by the two cushioning sheet manufacturing modules 100 are respectively a first sheet C11 and a second sheet C12. The first sheet C11 and the second sheet C12 are the same. The first sheet C11 and the second sheet C12 are opposite to each other and fed synchronously.

[0128] "Together with each other" means that the first surface A1 of the first sheet C11 and the first surface A1 of the second sheet C12 are located on the outside, while the buffer unit B0 of the first sheet C11 and the buffer unit B0 of the second sheet are both located between the first surface A1 of the first sheet C11 and the first surface A1 of the second sheet C12, thereby ensuring that the bag body of the package 300 is the first surface A1 and the buffer unit B0 is located inside the package 300.

[0129] The packaging bag manufacturing equipment 200 also includes:

[0130] The first bagging adhesive application unit 21 is used to apply adhesive to the surface of the first sheet C11 and / or the second sheet C12 facing another second sheet C12 or the first sheet C11. The positions of the first bagging adhesive application units 21 are spaced apart and perpendicular to the feeding direction. The positions of the first bagging adhesive application units 221 correspond to the interval S of the first sheet C11 or the second sheet C12. The buffer layer (B1, B2, B3) of the first sheet C11 is relative to the buffer layer (B1, B2, B3) of the second sheet C12.

[0131] The first bag-forming pressing unit 22 is used to roll and press the first sheet C11 and the second sheet C12 together, and press the first sheet C11 and the second sheet C12 together at the position corresponding to the interval S, thereby forming two sides of the packaging bag.

[0132] The packaging bag making equipment 200 further includes:

[0133] The second bagging adhesive application unit 23 is also used to apply adhesive to the surface of the first sheet C11 and / or the second sheet C12 toward another second sheet C12 or the first sheet C11. The position of the second bagging adhesive application unit 23 is continuous along the feeding direction and located on one side along the feeding direction relative to the first sheet C11.

[0134] The second bag-forming pressing unit 24 is used to roll and press the first sheet C11 and the second sheet C12 together, and press the first sheet C11 and the second sheet C12 together at the position where the second bag-forming gluing unit 23 applies glue, thereby forming the bottom of the packaging bag.

[0135] In this embodiment, the first bag-forming pressing unit 22 only presses the first sheet C11 and the second sheet C12 relative to the interval S to form the side of the packaging bag 300. Since the side of the packaging bag 300 does not contain a cushioning layer (B1, B2, B3), preheating and a long pressing time are not required during pressing, maximizing the feed rate a and thus improving production efficiency. Furthermore, this packaging bag manufacturing equipment 200 can also accommodate cushioning layers of various structures (B1, B2, B3), thereby producing packaging bags 300 with various different structures.

[0136] In this embodiment, the second bag-forming pressing unit 24 can directly press and fix the first sheet C11 and the second sheet C12 on one side along the feeding direction to form the bag bottom. The produced packaging bag 300 has a side formed at interval S and a bag bottom formed on one side along the feeding direction. The first bag-forming gluing unit 21, the first bag-forming pressing unit 22, the second bag-forming gluing unit 23, and the second bag-forming pressing unit 24 all work during the feeding process of the first sheet C11 and the second sheet C12. The production of the first sheet C11 and the second sheet C12 is also in a continuous feeding process. Therefore, while feeding the first side A1, the second side A2, and the buffer layers B1, B2, and B3, as well as the slit paper B, the first sheet C11 and the second sheet C12 are produced continuously and uninterruptedly. At the same time, the packaging bag is produced simultaneously using the first sheet C11 and the second sheet C12, which can maximize the production efficiency.

[0137] In this embodiment, the bottom of the packaging bag 300 can also be manufactured in another way. Specifically, the packaging bag manufacturing equipment further includes:

[0138] The bottom-flipping unit 25 is disposed at the rear end of the second bag-forming adhesive unit 23 and is used to fold the first sheet C11 or the second sheet C12 at the adhesive application position of the second bag-forming adhesive unit 23 to wrap the edge of the other second sheet C12 or the first sheet C11.

[0139] The second bag-forming pressing unit 24 is used to press the first sheet C11 and the second sheet C12 at the folded position to form the bottom of the packaging bag.

[0140] In other words, the bottom of the packaging bag 300 is not formed by directly pressing the first sheet C11 and the second sheet C12 together on one side along the feeding direction. Instead, after applying adhesive to the side of the first sheet C11 or the second sheet C12, it is folded over, and a portion of the first sheet C11 or the second sheet C12 wraps around the other second sheet C12 or the first sheet C11 before pressing. Compared to directly pressing the sides of the first sheet C11 and the second sheet C12 together without folding to form the bottom, this method allows the packaging bag to have a deeper insertion depth, increasing the internal space of the packaging bag 300.

[0141] In this embodiment, the packaging bag manufacturing equipment 200 further includes a bag forming and trimming unit 26. The bag forming and trimming unit 26 is used to cut the packaging bag 300 formed after pressing perpendicular to the feeding direction. The cutting position is located on the side of two adjacent packaging bags 300, that is, at each interval S. In this embodiment, the bag forming and trimming unit 26 also adopts a rolling cutting method, contacting the packaging bag 300 only at the interval S, thereby avoiding affecting the buffer layer (B1, B2, B3) between the two intervals S and reducing its buffering effect. In addition, the rolling cutting can be combined with the feeding rate of the first sheet C11 or the second sheet C12 to achieve high-speed cutting and improve production efficiency.

[0142] In this embodiment, the first bag-forming pressing unit 22 and the second bag-forming pressing unit 24 are... Figure 12 The structure of the rolling unit 80 in the corresponding embodiment 2 is similar, and the bag forming and trimming unit 26 is similar to... Figure 7 The cutting unit 40 in the corresponding implementation method has a similar structure, and both adopt rolling pressing and rolling cutting methods.

[0143] The first sheet C11 and the second sheet C12 are fed at the same rate as the first surface A1 in the manufacturing module 100, which is a feeding rate. That is, in this manufacturing equipment 200, the manufacturing and feeding of the buffer layers (B1, B2, B3) are carried out at a varying rate b; while the feeding of the first surface A1 and the second surface A2 is carried out at rate a. Simultaneously, the entire buffer sheet manufacturing module 100 and the packaging bag manufacturing equipment 200 with two buffer sheet manufacturing modules 100 are completed on the same machine. The entire machine can complete the manufacturing of the packaging bag 300 by feeding at rate a. This integrates multiple manufacturing processes onto one machine, reducing the time and material costs associated with transporting raw materials and the first sheet C11 and the second sheet C12. Furthermore, it improves production efficiency while reducing the overall size of the manufacturing equipment 200.

[0144] Implementation Method Eight

[0145] See Figures 22 to 26 The packaging bag making equipment of the present invention is improved based on Embodiment 7. In this embodiment, the packaging bag making equipment 200 includes two cushioning sheet making modules 100. The cushioning sheet making modules 100 are used to make at least one cushioning sheet (C4, C5, C6) in Embodiments 4 to 6. The cushioning sheets (C4, C5, C6) made by the two cushioning sheet making modules 100 are respectively the first sheet C21 and the second sheet C22. The first sheet C21 and the second sheet C22 are the same. The first sheet C21 and the second sheet C22 are opposite to each other and fed synchronously.

[0146] "Together with each other" means that the first surface A1 of the first sheet C21 and the first surface A1 of the second sheet C22 are located on the outside, while the buffer unit B0 of the first sheet C21 and the buffer unit B0 of the second sheet are both located between the first surface A1 of the first sheet C21 and the first surface A1 of the second sheet C22, thereby ensuring that the bag body of the packaged bag 300 is the first surface A1, and the buffer unit B0 is located inside the packaged bag 300.

[0147] The packaging bag making equipment 200, based on embodiment seven, further includes:

[0148] The slit paper gluing unit 27 is used to apply glue to the edge of the slit paper B31 in the first sheet C21 and / or the second sheet C22 that is not connected to the first surface A1, so as to fix the two buffer layers B0 in the first sheet C21 and the second sheet C22 in the production of the packaging bag 300. The two buffer layers B0 are stacked on top of each other and opposite to each other. The fixed position is located at the edge of the two buffer layers B0 that is not connected to the first surface A1.

[0149] In this embodiment, the two buffer layers B0 of the first sheet C21 and the second sheet C22 are fixed as described in this embodiment. Furthermore, in Embodiment Seven, the first sheet C21 and the second sheet C22 are fixed at two intervals S to form the side of the packaging bag 300. The first surfaces A1 of the two buffer sheets (C21, C22) are fixed to each other at one position along the feeding direction. After the above, a novel prefabricated packaging bag 300 bottom is formed.

[0150] In this embodiment, the manufacturing equipment 200 further includes a bottom-fixing adhesive applicator 28, which is used to apply adhesive to the surface of the slit paper B13 facing the first surface A1. The adhesive application position is located along the feeding direction of the slit paper B13 and on the side edge of the first surface A1 that is not fixed. The bottom-fixing adhesive applicator 28 is used to fix the slit paper B13 to the bottom position of the packaging bag formed by the first surface A1 after the slit paper B13 is stretched, so as to prevent the slit paper B13 from springing back.

[0151] The buffer sheet manufacturing module of the present invention does not have a buffer layer or slit paper at the pressing and fixing position, that is, at the interval S and the position. Therefore, it does not require a long pressing and heating time. Furthermore, it adopts a rolling pressing and continuous feeding method, and there is no situation where the step pressing feeding stops. This is beneficial to improve the production efficiency and can achieve a feeding production rate of 100m-150m per minute. Compared with the existing step feeding production, the production efficiency is greatly improved.

[0152] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A buffer sheet manufacturing module, characterized in that, The manufacturing module includes: The first unwinding unit is used to unwind the first surface and continuously feed the first surface along the unwinding direction; A buffer layer feeding unit is used to continuously feed a buffer layer along a feeding direction, the buffer layer being located on one side of the first surface; the buffer layer and / or the first surface are coated with adhesive for bonding the first surface and the buffer layer on a surface facing the other first surface or buffer layer; A paper-pressing unit is used to roll and clamp the first surface and the buffer layer at the location where adhesive is applied on the first surface and / or the buffer layer to adhere them, so as to fix the first surface and the buffer layer. A cutting unit is provided at the front end of the paper pressing unit in the feeding direction. The cutting unit rolls and cuts the buffer layer at intervals while feeding the paper, and the cutting position is perpendicular to the feeding direction. The cut buffer layer is separated into buffer units. Each buffer unit forms a first end and a second end according to the cutting order. The buffer units are sequentially fed to the paper pressing unit from the first end to the second end, and are clamped and fixed to the first surface by the paper pressing unit together with the first surface. The first unwinding unit has a first feed rate a; the buffer layer feed unit has a variable second feed rate b, the second feed rate b includes a rate b1 and a rate b2, the rate b2 is the same as the first feed rate a, and the rate b1 is less than the first feed rate a. A gap S is formed on a first surface between the first end of the cut buffer layer and the second end of the cut previous buffer layer; after the cutting unit cuts the buffer layer, the buffer layer feeding unit continuously feeds the buffer layer at a rate b1 less than the first feeding rate a until the buffer layer leaves the gap S relative to the first surface and the first end is fixed on the first surface, and then feeds it continuously and synchronously with the first surface at the rate b2.

2. The buffer sheet manufacturing module as described in claim 1, characterized in that, The manufacturing module includes a first adhesive application unit, which is used to continuously apply adhesive to the buffer layer and / or the first surface on a surface facing another first surface or buffer layer for bonding the first surface and the buffer layer. The adhesive application position of the first adhesive application unit is located on the first surface or the buffer layer, and at least one side along the delivery direction.

3. The buffer sheet manufacturing module as described in claim 2, characterized in that, The manufacturing module also includes: The second unwinding unit is used to unwind the second side, and the first side and the second side are fed synchronously and continuously. The buffer layer is located between the first side and the second side. x) Adhesive is provided on the surface of the second surface facing the first surface at a distance S relative to the first surface; or y) Adhesive is provided on the surface of the first surface facing the second surface at a distance S on the first surface. A rolling unit is used to roll and press the first surface and the second surface together at a distance S opposite to each other, thereby fixing the first surface and the second surface in a direction perpendicular to the feeding direction. The cut buffer layer is located between two adjacent distances S and is wrapped by the first surface and the second surface.

4. The buffer sheet manufacturing module as described in claim 3, characterized in that, The manufacturing module also includes: The second adhesive application unit is used to continuously apply adhesive to the surface of the second surface facing the first surface, and the adhesive application position is at least one side along the feeding direction, for connecting the first surface and the second surface in the feeding direction.

5. The buffer sheet manufacturing module as described in claim 4, characterized in that, The buffer layer includes at least one padding layer, which includes at least one of the following: corrugated paper structure, embossed structure, plastic bubble wrap, and three-dimensional hexagonal grid structure after slit paper is stretched.

6. The buffer sheet manufacturing module as described in claim 5, characterized in that, The buffer layer has multiple layers of padding. The manufacturing module includes multiple cutting units and multiple first adhesive application units. The buffer layer feeding unit includes multiple pad feeding units. The number of pad feeding units, first adhesive application units, cutting units, and padding units are the same. Each pad feeding unit is used to feed one layer of padding. At least one first adhesive application unit is used to continuously apply adhesive to the surface of one side of the padding towards another layer of padding, with the adhesive application position along at least one side of the feeding direction. Each cutting unit is used to cut one layer of padding. The multiple layers of padding are stacked on top of each other and fed continuously and synchronously. In this process, one layer of the liner is cut and then connected to the adjacent layer of the liner at a continuous adhesive application point.

7. The buffer sheet manufacturing module as described in claim 2, characterized in that, The buffer layer unwinding unit further includes: The third unwinding unit is used to unwind the third surface and continuously feed the third surface along the unwinding direction. The third surface has multiple pleats along the unwinding direction. A slit paper unwinding unit is used to unwind slit paper, so that the slit paper is continuously fed along the unwinding direction, and the slit paper is located between the first surface and the third surface; The slit paper is unwound synchronously with the third surface, and the slit paper and the third surface are connected to each other on both sides along the feeding direction; the width of the slit paper and the third surface perpendicular to the feeding direction is smaller than the width of the first surface; the slit paper and the third surface are connected to form the buffer layer; the glue applied by the first gluing unit is only located on one side of the feeding direction, thereby connecting the buffer layer on one side of the first surface.

8. A packaging bag manufacturing device, characterized in that, The packaging bag making equipment includes two cushioning sheet making modules, which are used to make cushioning sheets. The cushioning sheets made by the two cushioning sheet making modules are a first sheet and a second sheet, which are the same. The first sheet and the second sheet are opposite to each other and fed synchronously. The buffer sheet manufacturing module includes: The first unwinding unit is used to unwind the first surface and continuously feed the first surface along the unwinding direction; A buffer layer feeding unit is used to continuously feed a buffer layer along a feeding direction, the buffer layer being located on one side of the first surface; the buffer layer and / or the first surface are coated with adhesive for bonding the first surface and the buffer layer on a surface facing the other first surface or buffer layer; A paper-pressing unit is used to roll and clamp the first surface and the buffer layer at the location where adhesive is applied on the first surface and / or the buffer layer to adhere them, so as to fix the first surface and the buffer layer. A cutting unit is provided at the front end of the paper pressing unit in the feeding direction. The cutting unit rolls and cuts the buffer layer at intervals while feeding the paper, and the cutting position is perpendicular to the feeding direction. The cut buffer layer forms a first end and a second end in the order of cutting. The cut buffer layer is then fed to the paper pressing unit from the first end to the second end, and is clamped and fixed to the first surface by the paper pressing unit together with the first surface. The first unwinding unit has a first feed rate a; the buffer layer feed unit has a variable second feed rate b, the second feed rate b includes a rate b1 and a rate b2, the rate b2 is the same as the first feed rate a, and the rate b1 is less than the first feed rate a. A gap S is formed on the first surface between the first end of the cut buffer layer and the second end of the cut previous buffer layer; after the cutting unit cuts the buffer layer, the buffer layer feeding unit continuously feeds the buffer layer at a rate b1 less than the first feeding rate a until the buffer layer leaves the gap S relative to the first surface and the first end is fixed on the first surface, and then feeds it continuously and synchronously with the first surface at the rate b2. The packaging bag manufacturing equipment also includes: A first bagging adhesive application unit is used to apply adhesive to the surface of the first sheet and / or the second sheet facing another second sheet or the first sheet. The positions of the first bagging adhesive application units are spaced apart and perpendicular to the feeding direction. The positions of the first bagging adhesive application units correspond to the interval S of the first sheet or the second sheet. The buffer layer of the first sheet is relative to the buffer layer of the second sheet. The first bag-forming pressing unit is used to roll and press the first sheet and the second sheet together, and press the first sheet and the second sheet together at a position corresponding to the interval S, thereby forming two sides of the packaging bag.

9. The packaging bag manufacturing equipment as described in claim 8, characterized in that, The packaging bag manufacturing equipment also includes: The second bagging adhesive application unit is further configured to apply adhesive to the surface of the first sheet and / or the second sheet facing another second sheet or the first sheet, wherein the adhesive application position of the second bagging adhesive application unit is continuous along the feeding direction and located on one side of the first sheet along the feeding direction. The second bag-forming pressing unit is used to roll and press the first sheet and the second sheet together, and press the first sheet and the second sheet together at the position where the second bag-forming adhesive unit applies adhesive, thereby forming the bottom of the packaging bag.

10. The packaging bag manufacturing equipment as described in claim 9, characterized in that, The packaging bag manufacturing equipment also includes: The bottom-folding unit is located at the rear end of the second bagging and gluing unit and is used to fold the first sheet or the second sheet at the gluing position of the second bagging and gluing unit to wrap the edge of another second sheet or the first sheet. The second bag-forming pressing unit is used to press the first and second sheets at the folded position to form the bottom of the packaging bag.

11. The packaging bag manufacturing equipment as described in claim 8, characterized in that, The manufacturing module includes a first adhesive application unit, which is used to continuously apply adhesive to the buffer layer and / or the first surface on a surface facing another first surface or buffer layer for bonding the first surface and the buffer layer. The adhesive application position of the first adhesive application unit is located on the first surface or the buffer layer, and at least one side along the delivery direction.

12. The packaging bag manufacturing equipment as described in claim 11, characterized in that, The manufacturing module also includes: The second unwinding unit is used to unwind the second side, and the first side and the second side are fed synchronously and continuously. The buffer layer is located between the first side and the second side. x) Adhesive is provided on the surface of the second surface facing the first surface at a distance S relative to the first surface; or y) Adhesive is provided on the surface of the first surface facing the second surface at a distance S on the first surface. A rolling unit is used to roll and press the first surface and the second surface together at a distance S opposite to each other, thereby fixing the first surface and the second surface in a direction perpendicular to the feeding direction. The cut buffer layer is located between two adjacent distances S and is wrapped by the first surface and the second surface.

13. The packaging bag manufacturing equipment as described in claim 12, characterized in that, The manufacturing module also includes: The second adhesive application unit is used to continuously apply adhesive to the surface of the second surface facing the first surface, and the adhesive application position is at least one side along the feeding direction, for connecting the first surface and the second surface in the feeding direction.

14. The packaging bag manufacturing equipment as described in claim 12, characterized in that, The buffer layer includes at least one padding layer, which includes at least one of the following: corrugated paper structure, embossed structure, plastic bubble wrap, and three-dimensional hexagonal grid structure after slit paper is stretched.

15. The packaging bag manufacturing equipment as described in claim 14, characterized in that, The buffer layer has multiple layers of padding. The manufacturing module includes multiple cutting units and multiple second adhesive application units. The buffer layer feeding unit includes multiple padding feeding units. The number of padding feeding units, second adhesive application units, cutting units, and padding units are the same. Each padding feeding unit is used to feed one layer of padding. Each adhesive application unit is used to continuously apply adhesive to the surface of one side of the padding towards another layer of padding, with the adhesive application position along at least one side of the feeding direction. Each cutting unit is used to cut one layer of padding. The multiple layers of padding are stacked one on top of the other and fed continuously and synchronously. In this process, one layer of the liner is cut and then connected to the adjacent layer of the liner at a continuous adhesive application point.

16. The packaging bag manufacturing equipment as described in claim 15, characterized in that, The buffer layer unwinding unit further includes: The third unwinding unit is used to unwind the third surface and continuously feed the third surface along the unwinding direction. The third surface has multiple pleats perpendicular to the unwinding direction. A slit paper unwinding unit is used to unwind slit paper, so that the slit paper is continuously fed along the unwinding direction, and the slit paper is located between the first surface and the third surface; The slit paper is unwound synchronously with the third surface, and the slit paper and the third surface are connected to each other on both sides perpendicular to the feeding direction; the width of the slit paper and the third surface perpendicular to the feeding direction is smaller than the width of the first surface; the slit paper and the third surface are connected to form the buffer layer; the glue applied by the first gluing unit is only located on one side of the feeding direction, thereby connecting the buffer layer on one side of the first surface.

17. A buffer sheet manufacturing module, characterized in that, The manufacturing module includes: The first unwinding unit is used to unwind the first surface and continuously feed the first surface along the unwinding direction; The third unwinding unit is used to unwind the third surface and continuously feed the third surface along the unwinding direction. The third surface has multiple pleats perpendicular to the unwinding direction. A slit paper unwinding unit is used to unwind slit paper, so that the slit paper is continuously fed along the unwinding direction. The slit paper is located between the first surface and the third surface. Adhesive is provided on both ends of the slit paper relative to the third surface, or on the third surface relative to the slit paper, at a position along the feeding direction. Adhesive is also provided on one end of the slit paper relative to the first surface, or on the first surface relative to the slit paper, at a position along the feeding direction. A paper-pressing unit is used to roll and clamp the first side and the slit paper at the position where the glue is applied, and fix the third side and the slit paper at both ends. A cutting unit is provided at the front end of the paper pressing unit in the feeding direction. The cutting unit rolls and cuts the slit paper at intervals while feeding the paper, and the cutting position is perpendicular to the feeding direction. The cut slit paper forms a first end and a second end in the order of cutting. The cut slit paper is fed to the paper pressing unit from the first end to the second end, and the two ends of the slit paper are fixed to the third surface. The first surface is not covered by the slit paper and forms a gap S in the area perpendicular to the feeding direction. There are multiple gaps S, and the multiple gaps S are arranged at intervals with the feeding direction of the first surface. After the slit is fixed on the first surface, at least two cut slit papers are provided between two adjacent gaps S. The first unwinding unit has a first feed rate a; the slit paper unwinding unit has a variable second feed rate b, the second feed rate b includes rate b1, rate b2 and rate b3, the rate b2 is the same as the first feed rate a, the rate b1 is less than the first feed rate a, and the rate b3 is greater than the first feed rate a. When the first end of the cut slit paper is located at the cut-off position of the interval S, the slit paper unwinding unit feeds the slit paper at a rate b2, so that the slit paper is fed synchronously with the first surface; when the second end of the cut slit paper is fed between two adjacent intervals S, the slit paper unwinding unit feeds the slit paper at a rate b3, and the first end of the slit paper fed at a rate b3 overlaps with the second end of the previous cut slit paper. After the slit paper overlaps, the slit paper unwinding unit continues to feed the slit paper at a rate b2 until the second end of the next cut slit paper is located at the starting position of another adjacent interval S. Then, the slit paper unwinding unit feeds the slit paper at a rate b1, so that the second end of the next slit paper is located at the cut-off position of the interval S relative to the first surface. The slit paper unwinding unit feeds the slit paper again at a rate b2, thereby forming two partially overlapping slit papers in two adjacent intervals S of the first surface.

18. A packaging bag manufacturing device, characterized in that, It includes two buffer sheet manufacturing modules as described in claim 17, which manufacture two buffer sheets, which are simultaneously fed with their third surfaces facing each other and are pressed and bonded together at a distance S.

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