Staggered composite printing paper and production process thereof

Abstract

The invention relates to the technical field of toilet paper production, in particular to staggered composite printing paper and a production process thereof, the staggered composite printing paper comprises a surface layer part, a core layer part and a bottom layer part which are sequentially distributed from top to bottom, and the staggered composite printing paper is characterized in that the surface layer part comprises surface layer convex parts and surface layer concave parts which are distributed in an array staggered manner; the bottom layer part comprises bottom layer convex parts and bottom layer concave parts which are distributed in an array staggered manner; the positions of the bottom layer convex parts and the bottom layer concave parts correspond to the positions of the surface layer convex parts and the surface layer concave parts; the core layer part comprises core layer convex parts and core layer concave parts which are distributed in an array staggered mode, the core layer convex parts are matched with the surface layer convex parts, and the core layer concave parts are matched with the bottom layer concave parts; the surface layer part, the core layer part and the bottom layer part are combined to form a cavity structure, the thickness and the filling power of the toilet paper are remarkably improved, and the connection strength of the toilet paper is enhanced due to the existence of the core layer part.

Description

Technical Field

[0001] The invention relates to the technical field of toilet paper production, and in particular to a staggered composite printing paper and a production process thereof. Background Art

[0002] As a necessity in daily life, toilet paper has a large and stable market demand. As people's living standards improve, the quality and variety of toilet paper are becoming more and more demanding. Generally speaking, toilet paper is designed as a multi-layered structure, and its surface will undergo special treatment by embossing machinery. Such embossing technology not only adds visual beauty to the toilet paper, but also plays a key role in fixing the layers, effectively preventing the separation of the layers. In addition, embossing also cleverly increases the contact area of ​​the paper towel, so that the toilet paper can show better performance when cleaning.

[0003] However, most of the embossing equipment currently in widespread use adopts the design principle of concave and convex interlocking with each other. In the composite toilet paper produced by this production method, the embossed toilet paper on the upper and lower layers fit tightly together, resulting in the problem of overall thinness and insufficient fluffiness.

[0004] The Chinese patent application number 202011372551.2 discloses a point-to-point glue-free composite embossed toilet paper production process, including: step 1, unwinding toilet paper rolls at a rated unwinding line speed V0; step 2, dividing the toilet paper rolls into a first toilet paper layer and a second toilet paper layer; step 3, pulling the toilet paper rolls to the first embossing device for embossing to form an upper embossed toilet paper; the controller controls the embossing line speed V2 of the upper embossed toilet paper; the second toilet paper layer is pulled to the second embossing device for embossing to form a lower embossed toilet paper; the controller controls the embossing line speed V3 of the lower embossed toilet paper; the upper embossed toilet paper and the lower embossed toilet paper are input between the first embossing steel roller and the second embossing steel roller for embossing to form a multi-layer composite embossed toilet paper, and the embossed pattern on the upper embossed toilet paper and the embossed pattern on the lower embossed toilet paper are in the same position and are mirror images of each other; step 4, the controller automatically adjusts V1, V2, and V3 to maintain at V0. This production process can improve the thickness and fluffiness of toilet paper.

[0005] Although the embossing equipment is cleverly designed to form mirror-image embossing patterns on the upper and lower layers of toilet paper at the same position, thus enhancing the fluffiness of the toilet paper to a certain extent, in actual application, this production process of combining only two sheets of paper is obviously not thicker than conventional three-layer composite toilet paper. Therefore, the thickness of toilet paper produced under this production process fails to meet actual needs, which in turn affects its strength and durability. In addition, when the embossing equipment embosses the paper, the control of the embossing depth is extremely high and needs to be precisely adjusted according to the thickness of the paper. If the embossing is too shallow, the composite effect is not good, it is easy to delaminate during use, and the paper fluffiness is not ideal; on the contrary, if the embossing is too deep, the strength of the paper will be seriously lost, which will cause the toilet paper to tear easily during use, seriously affecting the user experience. However, the existing glue-laminating embossing machinery lacks the function of adjusting the embossing depth of the paper according to the process requirements.

[0006] In view of this, it is particularly critical and urgent to develop a staggered composite printing paper and a production process thereof that can effectively overcome the above-mentioned technical difficulties. Summary of the invention

[0007] The object of the present invention is to provide a staggered composite printing paper and a production process thereof to solve the technical problems raised in the above-mentioned background technology.

[0008] To achieve the above object, the present invention provides the following technical solutions: A dislocated composite printing paper comprises a surface layer, a core layer and a bottom layer which are sequentially arranged from top to bottom. The surface portion includes surface convex portions and surface concave portions that are staggeredly distributed in an array; The bottom layer includes bottom layer convex portions and bottom layer concave portions that are staggered in an array, and the positions of the bottom layer convex portions and the bottom layer concave portions correspond to the positions of the surface layer convex portions and the surface layer concave portions; The core layer portion includes core layer convex portions and core layer concave portions which are distributed in an array in an alternating manner. The core layer convex portions are matched with the surface layer convex portions, and the core layer concave portions are matched with the bottom layer concave portions.

[0009] The present invention also provides a production process for producing offset composite printing paper, the production process comprising the following steps: S1, the core layer portion is embossed along the second path by the core layer embossing device to emboss the core layer convex parts and the core layer concave parts in an array staggered, and then transferred to the middle part of the embossing composite device; S2, the surface layer part and the bottom layer part enter the middle part of the embossing composite device along the first and third paths respectively, and are embossed by the embossing composite device to form an array of staggered surface layer convex parts and surface layer concave parts, and bottom layer convex parts and bottom layer concave parts; S3, after the core layer enters the embossing and compounding device, it contacts the gluing device, and the lower surface of the core layer is coated with a binder, and then the convex part of the core layer is inserted into the convex part of the surface layer; S4, in the middle of the embossing composite device, the surface layer, the core layer and the bottom layer are composited, the core layer concave part is inserted into the bottom layer concave part, and the bonding agent penetrates into the surface layer and the bottom layer under the capillary action of the core layer, so that the surface layer, the core layer and the bottom layer are combined; The core layer embossing device comprises a first frame, on which a group of core layer embossing rollers for embossing the core layer are arranged, and transfer rollers are arranged on both sides of the core layer embossing rollers; The embossing composite device comprises a second frame, on which a mirror-image surface embossing assembly and a bottom embossing assembly are arranged, a gluing device is arranged between the surface embossing assembly and the bottom embossing assembly, and a core layer traction roller is arranged above the gluing device.

[0010] Preferably, the core layer embossing roller comprises a rigid roller, on which embossing parts distributed in an array are provided, and a pressure-bearing part is provided between two adjacent embossing parts; Among the two core layer embossing rollers arranged on the first frame, the embossing portion of one of the core layer embossing rollers is in contact with the pressure-bearing portion of the other core layer embossing roller.

[0011] Preferably, the surface embossing assembly comprises a surface embossing steel roller arranged on the second frame, a surface embossing rubber roller is arranged above the surface embossing steel roller, and a surface traction roller is arranged outside the surface embossing rubber roller; The bottom embossing assembly comprises a bottom embossing steel roller arranged on the second frame, a bottom embossing rubber roller is arranged above the bottom embossing steel roller, and a bottom traction roller is arranged outside the bottom embossing rubber roller; The embossing points on the surface of the bottom embossing steel roller and the embossing points on the surface of the surface embossing steel roller are arranged in mirror image to each other.

[0012] Preferably, the gluing device comprises a gluing box with composite glue inside, the gluing box is provided with a gluing port on the side facing the surface embossed steel roller, a gluing roller is provided at the gluing port, and the gluing roller contacts the surface of the core layer.

[0013] Preferably, the bottom layer embossing rubber roller and the surface layer embossing rubber roller both comprise a hollow rubber cylinder, an adjusting component is provided inside the hollow rubber cylinder, and the adjusting component is used to adjust the diameter of the hollow rubber cylinder; Both ends of the adjusting component are provided with suction components, and the suction components are used to pull the paper surface; A gas collecting component is arranged outside the air suction component, and the gas collecting component passes gas into the interior of the regulating component through the air suction component.

[0014] Preferably, the adjustment assembly comprises a support tube arranged inside the hollow rubber tube, the support tube is hollow, a partition is arranged inside the support tube, the partition divides the support tube into two areas, an elastic diaphragm is arranged outside the support tube, and the outer side of the elastic diaphragm is connected to the hollow rubber tube; The support tube is provided with through holes distributed in an array, and the inner area of ​​the support tube is connected with the hollow rubber tube through the through holes.

[0015] Preferably, the air suction assembly comprises air suction blocks arranged at both ends of the support tube, and the outer side of the air suction block is provided with air suction channels distributed in an array; A hollow cylinder is provided at one end of the air suction block away from the support cylinder, and an array of air inlet holes are provided on the outer side of the hollow cylinder, and the air inlet holes are connected to the inner area of ​​the support cylinder.

[0016] Preferably, the gas collecting assembly comprises a gas collecting hood arranged outside the hollow cylinder, one end of the gas collecting hood is fixedly connected to the second frame, and the other end of the gas collecting hood is rotatably connected to the air suction block; A shaftless fan is provided inside the air collecting hood, and the shaftless fan is provided with blades distributed in an array, and the blades are provided with deflection members for adjusting the deflection angle of the blades; The air collecting hood is provided with an air vent, the second frame is provided with a connecting channel connected to the air vent, and the air outlet of the connecting channel faces the side wall of the hollow rubber cylinder.

[0017] Preferably, the deflection member comprises a through slot provided on the blade, and an arc-shaped slot is provided inside the through slot; A movable block is arranged inside the through slot, a convex point matched with the arc slot is arranged on the outer side of the movable block, and a pushing part is arranged at the end of the movable block.

[0018] Technical effects and advantages of the present invention: 1. The staggered composite printed paper proposed by the present invention has the core layer convex part tightly combined with the surface layer convex part, and the core layer concave part matches the bottom layer concave part, and both the surface layer concave part and the bottom layer concave part are combined with the flat part of the core layer; this combination not only forms a cavity structure, significantly improving the thickness and fluffiness of the toilet paper, but also due to the existence of the core layer, the connection strength of the toilet paper is also enhanced. In particular, the combination of the core layer convex part and the core layer concave part with the surface layer convex part and the bottom layer concave part respectively provides a solid support for the cavity structure between the surface layer part and the bottom layer part.

[0019] 2. The present invention sets an air suction block and a connecting channel. When the air suction channel on the air suction block contacts the paper surface, the air suction blocks distributed at both ends of the hollow rubber cylinder will firmly adsorb and fix the two sides of the paper surface, so as to avoid the phenomenon of wrinkles on the paper surface when the paper surface passes through the area between the traction roller and the embossing rubber roller; at the same time, after the air flow is sucked into the air collecting hood through the air suction channel, it is discharged from the inner side of the second frame through the connecting channel. In this process, the gas impacts and cleans the paper surface, effectively removing impurities adhering to the paper surface, and ensuring the perfect composite of the surface layer, the core layer and the bottom layer.

[0020] 3. The present invention can accurately obtain the thickness information of the paper surface by detecting the value of the flow sensor inside the suction channel. According to the change of the paper surface thickness, the control system will automatically adjust the expansion or contraction of the hollow rubber cylinder, thereby changing the extrusion strength between the outer wall of the surface embossing rubber roller and the embossing point on the surface embossing steel roller, thereby realizing adaptive adjustment of the embossing depth, realizing continuous and stable control of the paper surface thickness and embossing depth, and improving production efficiency.

[0021] 4. The present invention uses flow sensors distributed on two suction blocks to detect in real time whether the paper surface is deflected. Once the paper surface is found to be deflected, the control system can accurately determine the offset and direction, and immediately start the correction mechanism. According to the specific situation of the paper surface deflection, the expansion amount of the hollow rubber cylinder is dynamically adjusted, and the contact area and pressure between the paper surface and the hollow rubber cylinder are changed, and the friction difference is used to guide the paper surface to return to the correct position. At the same time, the deflection angle of the blade is adjusted by the deflection member, which further increases the contact area and interaction force between the airflow and the blade, improves the suction force of the suction channel, and further enhances the rate and stability of the paper surface returning to the correct position. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The present invention is a schematic diagram of the production process of the offset composite printing paper.

[0023] Figure 2 It is a schematic structural diagram of the embossing composite device of the present invention.

[0024] Figure 3 It is a structural schematic diagram of the embossing composite device of the present invention from another perspective.

[0025] Figure 4 It is a schematic structural diagram of the core layer embossing device of the present invention.

[0026] Figure 5 It is a structural schematic diagram of the core layer embossing roller of the present invention.

[0027] Figure 6 It is a schematic structural diagram of the surface embossing component of the present invention.

[0028] Figure 7 For the present invention Figure 6 Schematic diagram of the enlarged structure at point A in the middle.

[0029] Figure 8 It is a schematic structural diagram of the air intake assembly of the present invention.

[0030] Fig. 9 It is a schematic diagram of the structure of the regulating component of the present invention.

[0031] Fig.10 It is a schematic diagram of the cross-sectional structure of the regulating assembly of the present invention.

[0032] Fig.11It is a schematic structural diagram of the deflection member of the present invention.

[0033] Fig.12 It is a schematic diagram of the decomposition of the offset composite printing paper of the present invention.

[0034] Fig.13 It is a schematic diagram of the cross-sectional structure of the staggered composite printing paper of the present invention.

[0035] The accompanying drawings are marked as follows: 100, surface part; 1001, surface convex part; 1002, surface concave part; 200. Core layer part; 2001. Core layer convex part; 2002. Core layer concave part; 300, bottom layer; 3001, bottom layer convex portion; 3002, bottom layer concave portion; 1. core layer embossing device; 101. first frame; 102. core layer embossing roller; 1021. rigid roller; 1022. embossing part; 1023. pressure bearing part; 103. transfer roller; 2. Embossing compound device; 201. second frame; 202. surface embossing assembly; 2021. surface traction roller; 2022. surface embossing steel roller; 2023. surface embossing rubber roller; 203. bottom embossing assembly; 2031. bottom traction roller; 2032. bottom embossing steel roller; 2033. bottom embossing rubber roller; 204. core traction roller; 3. Gluing device; 301. Gluing box; 302. Gluing roller; 4. Hollow rubber tube; 5. Adjustment assembly; 501. Support cylinder; 502. Through hole; 503. Partition plate; 504. Elastic diaphragm; 6. Air suction assembly; 601. Air suction block; 602. Air suction channel; 603. Hollow cylinder; 604. Air inlet; 7. Gas collecting assembly; 701. Gas collecting cover; 702. Shaftless fan; 703. Blades; 704. Deflection member; 7041. Through slot; 7042. Arc slot; 7043. Movable block; 7044. Pushing part; 8. Ventilation holes; 9. Connection channel. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Embodiment 1 Reference Figures 1 to 13 As shown, the present invention provides a staggered composite printing paper, comprising a surface layer portion 100, a core layer portion 200 and a bottom layer portion 300 which are sequentially distributed from top to bottom.

[0038] Specifically, the distribution of the surface layer portion 100, the core layer portion 200 and the bottom layer portion 300 is as follows: Fig.12 The cross section of the surface layer 100, the core layer 200 and the bottom layer 300 after being combined is as shown Fig.13 As shown; the surface layer 100 and the bottom layer 300 are connected to each other to improve the fluffiness of the toilet paper, and the core layer 200 arranged between the surface layer 100 and the bottom layer 300 is used to improve the strength of the toilet paper.

[0039] The surface portion 100 includes surface convex portions 1001 and surface concave portions 1002 that are distributed in an array and staggered.

[0040] The bottom layer 300 includes bottom layer protrusions 3001 and bottom layer concave portions 3002 that are staggered in an array. The positions of the bottom layer protrusions 3001 and the bottom layer concave portions 3002 correspond to the positions of the surface layer protrusions 1001 and the surface layer concave portions 1002 .

[0041] The core layer portion 200 includes core layer protrusions 2001 and core layer recesses 2002 that are staggeredly distributed in an array. The core layer protrusions 2001 are matched with the surface layer protrusions 1001 , and the core layer recesses 2002 are matched with the bottom layer recesses 3002 .

[0042] Specifically, the distance between the core layer convex portion 2001 and the core layer concave portion 2002 is equal to the distance between two surface layer concave portions 1002 and one surface layer convex portion 1001, the height between the surface layer convex portion 1001 and the surface layer concave portion 1002 is greater than the height between the core layer convex portion 2001 and the core layer concave portion 2002, and the height between the bottom layer convex portion 3001 and the bottom layer concave portion 3002 is greater than the height between the core layer convex portion 2001 and the core layer concave portion 2002.

[0043] In the present application, the embossed pattern on the surface layer 100 of the offset composite printing paper is mirror-imaged with the embossed pattern on the bottom layer 300 , and the embossed pattern on the core layer 200 is inlaid with the embossed pattern on the surface layer 100 and the embossed pattern on the bottom layer 300 .

[0044] Specifically, the core layer convex portion 2001 on the core layer portion 200 is combined with the surface layer convex portion 1001 on the surface layer portion 100, the core layer concave portion 2002 on the core layer portion 200 is combined with the bottom layer concave portion 3002 on the bottom layer portion 300, and the surface layer concave portion 1002 on the surface layer portion 100 and the bottom layer concave portion 3002 on the bottom layer portion 300 are both combined with the core layer flat portion on the core layer portion 200; after the above-mentioned connection is adopted, a cavity structure is formed between the surface layer convex portion 1001 on the surface layer portion 100 and the bottom layer concave portion 3002 on the bottom layer portion 300, thereby improving the thickness and fluffiness of the toilet paper. At the same time, since the core layer part 200 is provided between the surface layer part 100 and the bottom layer part 300, the connection strength of the toilet paper is improved to a certain extent, and the core layer convex part 2001 and the core layer concave part 2002 on the core layer part 200 are respectively combined with the surface layer convex part 1001 and the bottom layer concave part 3002, thereby improving the supporting strength of the cavity structure between the surface layer part 100 and the bottom layer part 300 to a certain extent.

[0045] Embodiment 2 Reference Figures 1 to 13 As shown, the present invention also provides a production process for producing offset composite printing paper, the production process comprising the following steps: S1, the core layer part 200 first enters the core layer embossing device 1 along the second path for embossing treatment; during this process, the core layer embossing device 1 embosses an array of staggered core layer convex parts 2001 and core layer concave parts 2002 on the upper surface of the core layer part 200; then, the core layer part 200 enters the middle area of ​​the embossing composite device 2 through transfer; S2, the surface layer 100 enters the middle area of ​​the embossing composite device 2 from top to bottom along the first path; in this process, the embossing composite device 2 embosses the surface layer 100 with the surface layer convex parts 1001 and the surface layer concave parts 1002 in an array staggered distribution; at the same time, the bottom layer 300 enters the middle area of ​​the embossing composite device 2 from bottom to top along the third path, and the embossing composite device 2 also embosses the bottom layer 300 with the bottom layer convex parts 3001 and the bottom layer concave parts 3002 in an array staggered distribution; S3, after the core layer part 200 enters the embossing composite device 2, it first contacts the gluing device 3 provided on the embossing composite device 2; the gluing device 3 applies a binder on the lower surface of the core layer part 200; then, as the core layer part 200 continues to operate, the core layer convex part 2001 of the core layer part 200 gradually inserts into the surface layer convex part 1001 of the surface layer part 100; S4. When the surface layer 100 and the core layer 200 reach the middle of the embossing composite device 2, the embossing composite device 2 performs a composite operation on the surface layer 100, the core layer 200 and the bottom layer 300; during this process, the core layer concave portion 2002 and the bottom layer concave portion 3002 are nested and composited; at the same time, under the capillary action of the core layer 200 itself, the binder gradually penetrates into the surface layer 100 and the bottom layer 300 and combines with them.

[0046] Compared with the traditional embossing composite process, the core layer 200 of this embodiment is processed in advance, and during the transportation of the core layer 200, it is sequentially inserted with the surface convex part 1001 and the bottom concave part 3002, so as to ensure that the produced toilet paper has improved structural strength while ensuring its fluffiness, thereby avoiding the toilet paper being easily torn during use and affecting the user experience.

[0047] Embodiment 3 In order to achieve the superiority of the paper towel produced by the above production process, the structures of the core layer embossing device 1 and the embossing compounding device 2 are also optimized.

[0048] Specifically, the core layer embossing device 1 comprises a first frame 101 , on which a group of core layer embossing rollers 102 for embossing the core layer portion 200 are disposed, and transfer rollers 103 are disposed on both sides of the core layer embossing rollers 102 .

[0049] by Figure 1 For example, the core layer part 200 enters between the two core layer embossing rollers 102 from the left transfer roller 103, and the two core layer embossing rollers 102 emboss the core layer part 200. The embossed core layer part 200 enters the embossing composite device 2 through the right transfer roller 103.

[0050] The embossing composite device 2 comprises a second frame 201 on which a surface embossing assembly 202 and a bottom embossing assembly 203 are arranged in a mirror-image manner, a gluing device 3 is arranged between the surface embossing assembly 202 and the bottom embossing assembly 203, and a core layer traction roller 204 is arranged above the gluing device 3.

[0051] The surface layer part 100 enters the interior of the surface embossing assembly 202 from the top of the second frame 201, and the surface embossing assembly 202 performs embossing treatment on the surface layer part 100; the bottom layer part 300 enters the interior of the bottom layer embossing assembly 203 from the bottom of the second frame 201, and the bottom layer embossing assembly 203 performs embossing treatment on the bottom layer part 300; the core layer part 200 enters between the surface embossing assembly 202 and the bottom layer embossing assembly 203 through the core layer traction roller 204, and the surface embossing assembly 202 and the bottom layer embossing assembly 203 perform composite embossing treatment on the surface layer 100, the core layer 200 and the bottom layer 300.

[0052] Reference Figures 1 to 5 As shown, the core layer embossing roller 102 comprises a rigid roller 1021 , on which embossing portions 1022 distributed in an array are provided, and between two adjacent embossing portions 1022 a pressure-bearing portion 1023 is provided.

[0053] Among the two core layer embossing rollers 102 arranged on the first frame 101 , the embossing portion 1022 of one of the core layer embossing rollers 102 is in contact with the pressure receiving portion 1023 of the other core layer embossing roller 102 .

[0054] An external driving device is provided at the end of the core layer embossing roller 102, and the external driving device is arranged on the first frame 101. The external driving device drives the two core layer embossing rollers 102 to rotate relative to each other, so that the embossing part 1022 prints an array of core layer convex parts 2001 and core layer concave parts 2002 that are staggered on the core layer part 200.

[0055] Specifically, when the two core layer embossing rollers 102 perform the embossing operation on the core layer portion 200 , the two core layer embossing rollers 102 rotate in opposite directions.

[0056] Reference Figures 1 to 3 As shown, the surface embossing assembly 202 includes a surface embossing steel roller 2022 arranged on the second frame 201, a surface embossing rubber roller 2023 is arranged above the surface embossing steel roller 2022, and a surface traction roller 2021 is arranged on the outer side of the surface embossing rubber roller 2023.

[0057] The surface portion 100 enters the surface embossing assembly 202 through the surface traction roller 2021, and then enters between the surface embossing rubber roller 2023 and the surface embossing steel roller 2022 through the transfer of the surface embossing rubber roller 2023, and the embossing points on the surface embossing steel roller 2022 emboss an array-distributed surface concave portion 1002 on the surface portion 100.

[0058] The bottom embossing assembly 203 comprises a bottom embossing steel roller 2032 arranged on the second frame 201 , a bottom embossing rubber roller 2033 is arranged above the bottom embossing steel roller 2032 , and a bottom traction roller 2031 is arranged on the outer side of the bottom embossing rubber roller 2033 .

[0059] The bottom layer portion 300 enters the bottom layer embossing assembly 203 through the bottom layer traction roller 2031, and then enters between the bottom layer embossing rubber roller 2033 and the bottom layer embossing steel roller 2032 through the transfer of the bottom layer embossing rubber roller 2033, and the embossing points on the bottom layer embossing steel roller 2032 emboss an array-distributed bottom layer convex portion 3001 on the bottom layer portion 300.

[0060] The embossing points on the surface of the bottom embossing steel roller 2032 and the embossing points on the surface of the top embossing steel roller 2022 are mirror images of each other.

[0061] When the bottom layer part 300 and the surface layer part 100 enter between the bottom layer embossed steel roller 2032 and the surface layer embossed steel roller 2022, the bottom layer embossed steel roller 2032 and the surface layer embossed steel roller 2022 apply pressure to the bottom layer convex part 3001 of the bottom layer part 300 and the surface layer concave part 1002 of the surface layer part 100, forcing the two to combine with each other.

[0062] Reference Figure 1 to Figure 2 As shown, the gluing device 3 includes a gluing box 301 with composite glue inside, and a gluing port is provided on the side of the gluing box 301 facing the surface embossed steel roller 2022, and a gluing roller 302 is provided at the gluing port, and the gluing roller 302 contacts the surface of the core layer 200.

[0063] A glue taking roller is arranged in the glue applying box 301, and the glue taking roller is partially immersed in the composite glue. A glue transfer roller is arranged above the glue taking roller, and the side of the glue transfer roller facing the glue coating port is in contact with the glue applying roller 302. The composite glue is transferred to the glue applying roller 302 via the glue taking roller and the glue transfer roller, and the glue applying roller 302 applies the composite glue on the core layer part 200.

[0064] Specifically, the gluing box 301 is provided with a driving motor for driving the gluing roller 302 to rotate, and a transmission assembly is provided between the gluing roller 302, the glue taking roller and the glue transfer roller. When the driving motor drives the gluing roller 302 to rotate, it synchronously drives the glue taking roller and the glue transfer roller to rotate; the transmission assembly belongs to the prior art and will not be described in detail here.

[0065] Specifically, in the process of embossing and compounding the surface layer 100 , the core layer 200 and the bottom layer 300 in this embodiment, the thicknesses of the surface layer 100 , the core layer 200 and the bottom layer 300 are consistent.

[0066] Specifically, the ends of the core layer embossing roller 102, the surface layer embossing steel roller 2022, the surface layer embossing rubber roller 2023, the bottom layer embossing steel roller 2032 and the bottom layer embossing rubber roller 2033 are all provided with driving devices, and when the driving devices rotate, the rotation speeds are consistent.

[0067] The rotation direction of the surface embossing steel roller 2022 is opposite to that of the surface embossing rubber roller 2023, the rotation direction of the bottom embossing steel roller 2032 is opposite to that of the bottom embossing rubber roller 2033, and the rotation direction of the surface embossing steel roller 2022 is opposite to that of the bottom embossing steel roller 2032. The two core layer embossing rollers 102 arranged on the first frame 101 rotate in opposite directions.

[0068] by Figure 1 For example, when in use, the core layer portion 200 enters the embossing composite device 2 along the second path, specifically: The core layer portion 200 enters between the two core layer embossing rollers 102 from the transfer roller 103 on the left side of the first frame 101, and the embossing portions 1022 and the pressure-bearing portions 1023 on the two core layer embossing rollers 102 perform embossing operations on the core layer portion 200. The embossing portions 1022 and the pressure-bearing portions 1023 emboss an array of staggered core layer convex portions 2001 and core layer concave portions 2002 on the core layer portion 200. The core layer portion 200 that has completed the embossing operation enters the embossing composite device 2 from the transfer roller 103 on the right side of the first frame 101. After entering the embossing composite device 2, the core layer portion 200 enters between the surface embossing steel roller 2022 and the bottom embossing steel roller 2032 through the transfer of the core layer traction roller 204.

[0069] The surface layer 100 enters the embossing and compounding device 2 along the first path, specifically: The surface layer 100 enters between the surface embossed steel roller 2022 and the surface embossed rubber roller 2023 from the surface traction roller 2021 on the top of the second frame 201, and the surface layer 100 is embossed by the cooperation of the surface embossed steel roller 2022 and the surface embossed rubber roller 2023, and an array of staggered surface convex portions 1001 and surface concave portions 1002 are embossed on its surface. The surface layer 100 that has completed the embossing operation gradually enters between the surface embossed steel roller 2022 and the bottom embossed steel roller 2032.

[0070] The bottom layer 300 enters the embossing compound device 2 along the third path, specifically: The bottom layer part 300 enters between the bottom layer embossing steel roller 2032 and the bottom layer embossing rubber roller 2033 from the bottom layer traction roller 2031 at the bottom of the second frame 201, and the bottom layer embossing steel roller 2032 and the bottom layer embossing rubber roller 2033 cooperate to emboss the bottom layer part 300, and an array of staggered bottom layer convex parts 3001 and bottom layer concave parts 3002 are embossed on its surface. After the embossing operation is completed, the bottom layer part 300 gradually enters between the surface embossed steel roller 2022 and the bottom layer embossed steel roller 2032.

[0071] When the surface layer portion 100 , the core layer portion 200 and the bottom layer portion 300 all enter between the surface layer embossed steel roller 2022 and the bottom layer embossed steel roller 2032 , the surface layer embossed steel roller 2022 and the bottom layer embossed steel roller 2032 perform a composite operation on the three.

[0072] Specifically, in the process of the core layer portion 200 entering the surface embossed steel roller 2022 and the bottom embossed steel roller 2032 through the core layer traction roller 204, the gluing device 3 first applies a coating to the lower surface of the core layer portion 200, and as the core layer portion 200 continues to run, the core layer convex portion 2001 of the core layer portion 200 is inserted before the surface convex portion 1001, and after the core layer portion 200 enters the area between the surface embossed steel roller 2022 and the bottom embossed steel roller 2032, the core layer concave portion 2002 on the core layer portion 200 is inserted with the bottom concave portion 3002, thereby completing the combination of the surface layer 100, the core layer 200 and the bottom layer 300.

[0073] Embodiment 4 Although the above embodiment can realize the combination of the surface layer 100, the core layer 200 and the bottom layer 300, there are still some problems in practical application. Specifically, during the transmission process of the surface layer 100 and the bottom layer 300 (hereinafter referred to as the paper surface), when the paper surface passes through the area between the traction roller and the embossing rubber roller, wrinkles are easily generated. Such wrinkles will further affect the combination quality between the surface layer 100, the core layer 200 and the bottom layer 300.

[0074] In view of this, this embodiment modifies the above embodiment to address the above problems, and the specific improvement scheme is as follows: Reference Figures 6 to 10 As shown, both the bottom embossing rubber roller 2033 and the surface embossing rubber roller 2023 include a hollow rubber cylinder 4 , and an adjusting component 5 is provided inside the hollow rubber cylinder 4 . The adjusting component 5 is used to adjust the diameter of the hollow rubber cylinder 4 .

[0075] Suction components 6 are provided at both ends of the adjustment component 5, and the suction components 6 are used to pull the paper surface.

[0076] A gas collecting assembly 7 is provided on the outer side of the air suction assembly 6 , and the gas collecting assembly 7 introduces gas into the interior of the regulating assembly 5 through the air suction assembly 6 .

[0077] Reference Figures 6 to 10 As shown, the adjustment component 5 includes a support tube 501 arranged inside the hollow rubber tube 4, and the support tube 501 is hollow.

[0078] The support tube 501 is provided with through holes 502 distributed in an array, and the inner area of ​​the support tube 501 is connected with the hollow rubber tube 4 through the through holes 502 .

[0079] The air collecting component 7 extracts external air through the suction component 6 and discharges it into the support tube 501. The gas entering the support tube 501 enters the hollow rubber tube 4 through the support tube 501, thereby driving the hollow rubber tube 4 to expand, thereby adjusting the extrusion force between the hollow rubber tube 4 and the embossed steel roller.

[0080] Reference Figures 6 to 10 As shown, the air suction assembly 6 includes air suction blocks 601 arranged at both ends of the support tube 501, and the outer side of the air suction block 601 is provided with air suction channels 602 distributed in an array.

[0081] A flow sensor is disposed inside the air suction channel 602. By detecting the value of the flow sensor, the thickness of the paper passing through the hollow rubber cylinder 4 and whether the paper is deflected during operation can be determined.

[0082] A hollow cylinder 603 is provided at one end of the air suction block 601 away from the support cylinder 501 , and an array of air inlet holes 604 are provided on the outside of the hollow cylinder 603 , and the air inlet holes 604 are connected to the inner area of ​​the support cylinder 501 .

[0083] The hollow cylinder 603 is connected to the output shaft of the external driving device.

[0084] The gas collecting component 7 draws external gas into the interior through the air suction channel 602 , and the gas entering the interior of the gas collecting component 7 enters the hollow rubber cylinder 4 through the air inlet hole 604 and the hollow cylinder 603 , thereby driving the hollow rubber cylinder 4 to expand.

[0085] A control valve is provided at the connection between the hollow cylinder 603 and the hollow rubber cylinder 4 , and the control valve is used to control whether the hollow rubber cylinder 4 and the hollow cylinder 603 are connected or not.

[0086] Reference Figures 6 to 12 As shown, the gas collecting assembly 7 includes a gas collecting hood 701 arranged outside the hollow cylinder 603, one end of the gas collecting hood 701 is fixedly connected to the second frame 201, and the other end of the gas collecting hood 701 is rotatably connected to the suction block 601.

[0087] A shaftless fan 702 is provided inside the air collecting hood 701 . The shaftless fan 702 is provided with blades 703 distributed in an array. The blades 703 are provided with deflection members 704 for adjusting the deflection angle of the blades 703 .

[0088] The air collecting cover 701 is provided with an air vent 8 , and the second frame 201 is provided with a connecting channel 9 connected to the air vent 8 , and an air outlet of the connecting channel 9 faces the side wall of the hollow rubber cylinder 4 .

[0089] When the hollow cylinder 603 and the hollow rubber cylinder 4 are in a non-connected state, the gas collecting component 7 draws external gas into the interior through the suction channel 602, and the gas entering the gas collecting component 7 is discharged from the inner side of the second frame 201 through the transfer of the vent hole 8 and the connecting channel 9. The discharged gas impacts and cleans the paper surface to prevent impurities adhering to the paper surface from affecting the composite of the surface layer 100, the core layer 200 and the bottom layer 300.

[0090] Specifically, the shaftless fan 702 can be compared to a shaftless propeller, which belongs to the prior art and will not be described in detail here.

[0091] In the initial state, the control valve at the connection between the hollow cylinder 603 and the support cylinder 501 is in a closed state, and the air inlet 604 and the support cylinder 501 are in a non-connected state (see Fig.10 as shown).

[0092] Taking the operation of the surface layer 100 as an example, when the surface layer 100 enters the area between the surface embossed steel roller 2022 and the surface embossed rubber roller 2023 through the surface layer traction roller 2021, the surface layer 100 first contacts the right half area of ​​the surface layer traction roller 2021 (specifically, Figure 1 as shown).

[0093] In the process that the surface part 100 first contacts the right half area of ​​the surface traction roller 2021, the control system controls the shaftless fan 702 to start. After the shaftless fan 702 is started, it drives the blades 703 to rotate around the hollow cylinder 603. As the blades 703 rotate, the external air is sucked into the air collecting hood 701 through the air suction channel 602 on the air suction block 601. The gas entering the air collecting hood 701 is discharged from the inner side of the second frame 201 through the transfer of the air vent 8 and the connecting channel 9. The discharged gas impacts and cleans the paper surface to prevent impurities adhering to the paper surface from affecting the composite of the surface part 100, the core layer part 200 and the bottom layer part 300.

[0094] Specifically, an installation valve is provided inside the connecting channel 9, and the installation valve is used to control the connection between the connecting channel 9 and the gas collecting hood 701. In the initial state, the installation valve is in an open state, and the connecting channel 9 and the gas collecting hood 701 are in a connected state.

[0095] In the process of the shaftless fan 702 sucking air from the outside through the suction channel 602, the suction channel 602 itself will also generate a suction force. When the suction channel 602 on the suction block 601 contacts the paper surface, the suction channel 602 simultaneously adsorbs the paper surface. At the same time, since the suction blocks 601 are distributed at both ends of the hollow rubber cylinder 4, under normal circumstances, the suction blocks 601 distributed at both ends of the hollow rubber cylinder 4 adsorb and fix both sides of the paper surface, thereby avoiding the occurrence of wrinkles on the paper surface when the paper surface passes through the area between the traction roller and the embossing rubber roller.

[0096] It should be noted that: the air inlet cross section of the air inlet channel 602 in this embodiment is contracted, and a steel ball is provided inside the air inlet channel 602, and the steel ball is elastically connected to the air inlet channel 602 through a spring, and the diameter of the steel ball is larger than the diameter of the air inlet of the air inlet channel 602 but smaller than the inner diameter of the air inlet channel 602 (see Fig.10As shown). At the same time, magnetic parts are provided at the positions corresponding to the suction block 601 of the surface embossed steel roller 2022 and the bottom embossed steel roller 2032. When the distance between a single suction channel 602 and the magnetic part reaches the minimum, the steel ball is pulled by the magnetic part to block the air inlet of the suction channel 602. As the hollow cylinder 603 continues to rotate, the spring releases the blockage of the air inlet of the suction channel 602 under the influence of the spring restoring force. The magnetic force generated by the magnetic part on the steel ball is greater than the suction force generated by the shaftless fan 702.

[0097] Specifically, the two sides of the paper surface do not participate in the embossing operation. After the surface layer 100, the core layer 200 and the bottom layer 300 are embossed and composited, the two sides of the paper surface are trimmed by a trimming machine. The trimming machine belongs to the prior art and will not be described in detail here.

[0098] A control terminal is disposed outside the second rack 201, and a control system is disposed inside the control terminal. The control system is used to control all electrical components on the device.

[0099] When in use, the control system detects the value of the flow sensor set inside the suction channel 602 when the suction channel 602 contacts the paper surface, thereby obtaining the thickness of the paper surface, and then controlling the control valve at the connection between the hollow tube 603 and the support tube 501 to start or close, thereby adjusting the diameter of the hollow rubber tube 4.

[0100] Specifically, the paper surfaces of the surface layer 100 , the core layer 200 and the bottom layer 300 are all breathable paper surfaces, which are consistent with the paper surface material of toilet paper in the prior art, and the thickness of the three is consistent.

[0101] When it is detected that the value of the flow sensor at the connection between the hollow tube 603 and the support tube 501 is less than the set value, it indicates that the thickness of the paper surface is thicker, resulting in less air flow entering the suction channel 602 through the paper surface, which in turn causes the value of the flow sensor to be less than the set value.

[0102] When the control system detects that the thickness of the paper surface is relatively thick, the installation valve arranged inside the control connecting channel 9 is closed. At this time, the connecting channel 9 and the gas collecting hood 701 are in a non-connected state. At the same time, the control valve at the connection between the hollow cylinder 603 and the support cylinder 501 is started. At this time, the hollow cylinder 603 and the support cylinder 501 are in a connected state. The gas entering the air collecting hood 701 from the air suction channel 602 enters the interior of the support tube 501 through the air inlet hole 604, and is discharged into the interior of the hollow rubber tube 4 from the through hole 502. Since both ends of the hollow rubber tube 4 are fixedly connected to their respective corresponding air suction blocks 601, after the gas enters the hollow rubber tube 4, the hollow rubber tube 4 expands, thereby increasing the extrusion strength between the outer wall of the hollow rubber tube 4 (i.e., the outer wall of the surface embossed rubber roller 2023) and the embossed point on the surface embossed steel roller 2022, that is, increasing the contact distance between the outer wall of the hollow rubber tube 4 and the embossed point on the surface embossed steel roller 2022, thereby increasing the embossing depth on the paper surface, and further improving the fluffiness of the surface layer 100, the core layer 200 and the bottom layer 300 combined.

[0103] Specifically, during actual use, an air pressure sensor is provided inside the hollow rubber cylinder 4. When the expansion degree of the hollow rubber cylinder 4 is increased and adjusted, the control system always monitors the value of the air pressure sensor. When it reaches the preset value, the control valve is closed, and the hollow cylinder 603 and the support cylinder 501 are in a non-connected state; at the same time, the installation valve in the connecting channel 9 is controlled to start, and the connecting channel 9 and the air collecting hood 701 are in a connected state.

[0104] Specifically, the air pressure entering the hollow rubber tube 4 through the air inlet hole 604 is greater than the original air pressure inside the hollow rubber tube 4 .

[0105] When it is detected that the value of the flow sensor at the connection between the hollow tube 603 and the support tube 501 is greater than the set value, it indicates that the thickness of the paper surface is thin, resulting in a large air flow entering the suction channel 602 through the paper surface, which in turn causes the value of the flow sensor to be greater than the set value.

[0106] When the control system detects that the thickness of the paper surface is thin, the shaftless fan 702 is controlled to stop running, and the control valve at the connection between the hollow cylinder 603 and the support cylinder 501 is controlled to start. Affected by the air pressure inside the hollow rubber cylinder 4 (the hollow rubber cylinder 4 is in an expanded state at the beginning), the air flow inside the hollow rubber cylinder 4 is discharged into the air collecting hood 701 through the hollow cylinder 603 and the air inlet 604, and the gas entering the air collecting hood 701 is discharged through the connecting channel 9; when the air flow inside the hollow rubber cylinder 4 is discharged, the air in the hollow rubber cylinder 4 is discharged. After coming out, the outer diameter of the hollow rubber cylinder 4 shrinks, thereby reducing the extrusion strength between the outer wall of the hollow rubber cylinder 4 (i.e., the outer wall of the surface embossed rubber roller 2023) and the embossed points on the surface embossed steel roller 2022, that is, reducing the contact distance between the outer wall of the hollow rubber cylinder 4 and the embossed points on the surface embossed steel roller 2022, thereby reducing the embossing depth on the paper surface, avoiding excessive embossing depth of the embossed steel roller on the paper surface, resulting in loss of strength of the paper surface, which makes the toilet paper easy to tear during use.

[0107] Specifically, when adjusting the expansion reduction of the hollow rubber tube 4, the control system constantly monitors the value of the air pressure sensor. When it reaches the preset value, the control valve is closed, and the hollow tube 603 and the support tube 501 are in a non-connected state; at the same time, the shaftless fan 702 is controlled to start again.

[0108] Embodiment 5 Although the above embodiment solves the wrinkle phenomenon that occurs during the running of the paper surface by using the suction block 601 and the hollow rubber cylinder 4, in actual use, if the tension distribution on the paper surface is uneven, the paper surface is prone to deflection, resulting in uneven thickness distribution of the surface layer 100, the core layer 200 and the bottom layer 300. This uneven thickness will seriously affect the user experience.

[0109] In view of this, this embodiment modifies the above embodiment to address the above problems, and the specific improvement scheme is as follows: Reference Figures 8 to 10 As shown, a partition 503 is provided inside the support tube 501 , and the partition 503 divides the support tube 501 into two areas. An elastic diaphragm 504 is provided on the outside of the support tube 501 , and the outside of the elastic diaphragm 504 is connected to the hollow rubber tube 4 .

[0110] The partition 503 is located in the middle of the support tube 501 , and the elastic diaphragm 504 is located in the middle of the hollow rubber tube 4 . The partition 503 and the elastic diaphragm 504 separate the support tube 501 and the hollow rubber tube 4 into two areas, specifically including area A and area B.

[0111] Reference Figures 8 to 11 As shown, the deflection member 704 includes a through slot 7041 disposed on the blade 703 , and an arc-shaped slot 7042 is disposed inside the through slot 7041 .

[0112] A movable block 7043 is disposed inside the through slot 7041 , a convex point matched with the arc slot 7042 is disposed on the outer side of the movable block 7043 , and a pushing portion 7044 is disposed at the end of the movable block 7043 .

[0113] The blade 703 is rotatably connected to the shaftless fan 702, and the pushing part 7044 includes an electric push rod. During the extension and retraction process of the pushing part 7044, the movable block 7043 is synchronously driven to move. The convex point on the movable block 7043 squeezes the arc groove 7042 to force the blade 703 to rotate, thereby adjusting the deflection angle of the blade 703.

[0114] Since the suction blocks 601 are distributed at both ends of the hollow rubber cylinder 4, under normal circumstances, the suction blocks 601 distributed at both ends of the hollow rubber cylinder 4 adsorb and fix both sides of the paper surface, thereby preventing the paper surface from wrinkling when passing through the area between the traction roller and the embossing rubber roller.

[0115] However, in actual application, due to the influence of tension, the paper surface is prone to deflection during operation. The control system detects the numerical values ​​of the flow sensors distributed on the two suction blocks 601 to determine whether the paper surface is deflected. After the paper surface is deflected, the deflection member 704 is used to control the angle of the blade 703 and the expansion amount of the hollow rubber cylinder 4 to correct the deviation of the paper surface.

[0116] Under normal circumstances, the values ​​detected by the flow sensors distributed on the two suction blocks 601 are in a stable state. When the value detected by the flow sensor distributed on one of the suction blocks 601 is greater than the value detected by the flow sensor distributed on the other suction block 601, it indicates that the paper surface is skewed on the hollow rubber cylinder 4, resulting in the paper surface partially blocking the suction channel 602 on one of the suction blocks 601 when it contacts the paper surface, causing the value detected by the flow sensor distributed on the suction block 601 to show a linear change, but overall it is still greater than the value detected by the flow sensor of the other suction block 601.

[0117] When the control system changes the values ​​of the flow sensors distributed on the two suction blocks 601, the offset amount and offset direction of the paper surface can be obtained.

[0118] by Fig.10 For example, assuming that the paper surface on the hollow rubber tube 4 deviates to the B area, at this time, the hollow rubber tube 4 in the B area is controlled to expand according to its deviating direction. The specific actions are: The installation valve in the connecting channel 9 corresponding to the air suction block 601 in the control area B is closed, so that the connecting channel 9 and the air collecting hood 701 are in a non-connected state. At the same time, the control valve at the connection between the hollow cylinder 603 and the support cylinder 501 is started. At this time, the hollow cylinder 603 and the support cylinder 501 are in a connected state. With the operation of the shaftless fan 702, the gas can enter the inside of the support cylinder 501 through the air suction channel 602, forcing the hollow rubber cylinder 4 in the B area to expand, that is, the right side diameter of the hollow rubber cylinder 4 is larger than the left side diameter of the hollow rubber cylinder 4, thereby causing the contact area between the paper surface and the hollow rubber cylinder 4 in the A area to decrease, the pressure on the contact surface increases, and the friction force increases. The greater the friction force, the more difficult it is for the paper to pass through, so the paper surface will deflect to one side of the A area to make the deflected paper surface return to normal.

[0119] Specifically, when the expansion degree of the hollow rubber cylinder 4 is increased and adjusted, the control system constantly monitors the value of the air pressure sensor. When it reaches the preset value, the control valve is closed, and the hollow cylinder 603 and the support cylinder 501 are in a non-connected state; at the same time, the installation valve in the connecting channel 9 is controlled to start, and the connecting channel 9 and the air collecting hood 701 are in a connected state.

[0120] While controlling the expansion of the hollow rubber cylinder 4 in the B area, the control system controls the deflection member 704 on the blade 703 in the A area to start, and the deflection member 704 drives the blade 703 to increase its deflection angle. The increase in the deflection angle of the blade 703 may increase the blocking area of ​​the blade 703 to the airflow, thereby increasing the contact area and interaction force between the airflow and the blade 703 to a certain extent. This may cause more airflow to be sucked by the blade 703, that is, the deflection angle of the blade 703 increases, and the suction force of the suction channel 602 will also increase. When the suction force of the suction channel 602 in the A area increases, the suction channel 602 can pull the paper surface toward the side of the A area, further increasing the speed of the paper surface returning to the normal state.

[0121] The specific steps of the deflection member 704 for the deflection angle of the blade 703 are as follows: when the pushing portion 7044 is extended, the movable block 7043 moves upward, and the convex point on the movable block 7043 squeezes the arc groove 7042 to force the blade 703 to rotate, and the deflection angle of the blade 703 increases; when the pushing portion 7044 is contracted, the movable block 7043 moves downward, and the convex point on the movable block 7043 squeezes the arc groove 7042 to force the blade 703 to reverse, and the deflection angle of the blade 703 decreases.

[0122] The present invention detects the thickness of the paper surface through the flow sensor in the suction channel 602; when the paper surface is thicker, the flow sensor value is less than the set value, the control valve opens, and the gas enters the support tube 501 through the air inlet 604, and then enters the hollow rubber tube 4, causing it to expand, increasing the squeezing force with the embossing steel roller, and increasing the embossing depth; when the paper surface is thinner, the flow sensor value is greater than the set value, the shaftless fan 702 stops running, and the control valve opens at the same time, the gas inside the hollow rubber tube 4 is discharged, the diameter of the hollow rubber tube 4 shrinks, reducing the squeezing force and reducing the embossing depth.

[0123] At the same time, the flow sensors on the air suction blocks 601 at both ends of the hollow rubber tube 4 detect the adsorption conditions on both sides of the paper surface; when the flow sensor value of the air suction block 601 on one side is greater than that on the other side, it indicates that the paper surface is deflected; when the paper surface is deflected, the control system determines the offset and direction of the paper surface according to the value change of the flow sensor. At the same time, by controlling the expansion of the hollow rubber tube 4 in the corresponding area, the contact area and pressure between the paper surface and the hollow rubber tube 4 are changed, and the friction difference is used to guide the paper surface back to the normal state.

[0124] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A staggered composite printing paper, comprising a surface layer (100), a core layer (200) and a bottom layer (300) which are sequentially arranged from top to bottom, characterized in that: The surface portion (100) comprises surface convex portions (1001) and surface concave portions (1002) that are distributed in an array and staggered; The bottom layer (300) comprises bottom layer convex portions (3001) and bottom layer concave portions (3002) that are distributed in an array in a staggered manner, and the positions of the bottom layer convex portions (3001) and the bottom layer concave portions (3002) correspond to the positions of the surface layer convex portions (1001) and the surface layer concave portions (1002); The core layer portion (200) comprises core layer convex portions (2001) and core layer concave portions (2002) that are distributed in an array and staggered, the core layer convex portions (2001) being matched with the surface layer convex portions (1001), and the core layer concave portions (2002) being matched with the bottom layer concave portions (3002).

2. A production process for producing the staggered composite printing paper according to claim 1, characterized in that: The production process comprises the following steps: S1, the core layer portion (200) is embossed along a second path through a core layer embossing device (1) to form an array of staggered core layer convex portions (2001) and core layer concave portions (2002), and then transferred to the middle portion of an embossing compound device (2); S2, the surface layer portion (100) and the bottom layer portion (300) enter the middle of the embossing composite device (2) along the first path and the third path respectively, and are embossed by the embossing composite device (2) to form an array of staggered surface layer convex portions (1001) and surface layer concave portions (1002), and bottom layer convex portions (3001) and bottom layer concave portions (3002); S3, after the core layer part (200) enters the embossing composite device (2), it contacts the gluing device (3), and a bonding agent is applied to the lower surface of the core layer part (200), and then the core layer convex part (2001) and the surface layer convex part (1001) are inserted into each other; S4, in the middle of the embossing composite device (2), the surface layer (100), the core layer (200) and the bottom layer (300) are composited, the core layer concave portion (2002) and the bottom layer concave portion (3002) are nested, and at the same time, the bonding agent penetrates into the surface layer (100) and the bottom layer (300) under the capillary action of the core layer (200), so that the surface layer (100), the core layer (200) and the bottom layer (300) are combined; The core layer embossing device (1) comprises a first frame (101), the first frame (101) is provided with a group of core layer embossing rollers (102) for embossing the core layer portion (200), and transfer rollers (103) are provided on both sides of the core layer embossing rollers (102); The embossing composite device (2) comprises a second frame (201), on which a surface embossing component (202) and a bottom embossing component (203) arranged in a mirror image are provided, a gluing device (3) is provided between the surface embossing component (202) and the bottom embossing component (203), and a core layer traction roller (204) is provided above the gluing device (3).

3. The production process of the staggered composite printing paper according to claim 2, characterized in that: The core layer embossing roller (102) comprises a rigid roller (1021), the rigid roller (1021) is provided with embossing parts (1022) distributed in an array, and a pressure-bearing part (1023) is provided between two adjacent embossing parts (1022); Among the two core layer embossing rollers (102) arranged on the first frame (101), the embossing part (1022) of one of the core layer embossing rollers (102) is in contact with the pressure-bearing part (1023) of the other core layer embossing roller (102).

4. The production process of the staggered composite printing paper according to claim 2, characterized in that: The surface embossing assembly (202) comprises a surface embossing steel roller (2022) arranged on the second frame (201), a surface embossing rubber roller (223) is arranged above the surface embossing steel roller (2022), and a surface traction roller (221) is arranged on the outer side of the surface embossing rubber roller (2023); The bottom embossing assembly (203) comprises a bottom embossing steel roller (2032) arranged on the second frame (201), a bottom embossing rubber roller (2033) is arranged above the bottom embossing steel roller (2032), and a bottom traction roller (2031) is arranged outside the bottom embossing rubber roller (2033); The embossing points on the surface of the bottom embossing steel roller (2032) and the embossing points on the surface of the top embossing steel roller (222) are arranged in a mirror image to each other.

5. The production process of the staggered composite printing paper according to claim 4, characterized in that: The gluing device (3) comprises a gluing box (301) with composite glue arranged inside, the gluing box (301) is provided with a gluing opening on a side facing the surface embossed steel roller (2022), a gluing roller (302) is arranged at the gluing opening, and the gluing roller (302) is in contact with the surface of the core layer (200).

6. The production process of staggered composite printing paper according to claim 5, characterized in that: The bottom layer embossed rubber roller (2033) and the surface layer embossed rubber roller (2023) both comprise a hollow rubber cylinder (4), an adjusting component (5) being provided inside the hollow rubber cylinder (4), and the adjusting component (5) being used to adjust the diameter of the hollow rubber cylinder (4); Both ends of the adjustment component (5) are provided with suction components (6), and the suction components (6) are used to pull the paper surface; A gas collecting component (7) is provided on the outside of the air suction component (6), and the gas collecting component (7) passes gas into the interior of the regulating component (5) through the air suction component (6).

7. The production process of staggered composite printing paper according to claim 6, characterized in that: The regulating assembly (5) comprises a supporting tube (501) arranged inside the hollow rubber tube (4); the supporting tube (501) is hollow; a partition (503) is arranged inside the supporting tube (501); the partition (503) divides the supporting tube (501) into two areas; an elastic diaphragm (504) is arranged on the outside of the supporting tube (501); the outside of the elastic diaphragm (504) is connected to the hollow rubber tube (4); The support tube (501) is provided with through holes (502) distributed in an array, and the internal area of ​​the support tube (501) is connected to the hollow rubber tube (4) through the through holes (502).

8. The production process of staggered composite printing paper according to claim 7, characterized in that: The air suction assembly (6) comprises air suction blocks (601) arranged at both ends of the support tube (501), and the outer sides of the air suction blocks (601) are provided with air suction channels (602) distributed in an array; A hollow cylinder (603) is provided at one end of the air suction block (601) away from the support cylinder (501), and an array of air inlet holes (604) are provided on the outside of the hollow cylinder (603), and the air inlet holes (604) are connected to the internal area of ​​the support cylinder (501).

9. The production process of staggered composite printing paper according to claim 8, characterized in that: The gas collecting assembly (7) comprises a gas collecting hood (701) arranged outside the hollow cylinder (603), one end of the gas collecting hood (701) being fixedly connected to the second frame (201), and the other end of the gas collecting hood (701) being rotatably connected to the air suction block (601); A shaftless fan (702) is provided inside the air collecting hood (701), the shaftless fan (702) is provided with blades (703) distributed in an array, and the blades (703) are provided with deflection members (704) for adjusting the deflection angle of the blades (703); The air collecting hood (701) is provided with an air vent (8), and the second frame (201) is provided with a connecting channel (9) connected to the air vent (8), and an air outlet of the connecting channel (9) faces the side wall of the hollow rubber cylinder (4).

10. The production process of staggered composite printing paper according to claim 9, characterized in that: The deflection member (704) comprises a through slot (7041) provided on the blade (703), wherein an arc-shaped slot (7042) is provided inside the through slot (7041); A movable block (7043) is provided inside the through groove (7041), a convex point matching the arc groove (7042) is provided on the outside of the movable block (7043), and a pushing portion (7044) is provided at the end of the movable block (7043).

Images