Fiber PTFE (Polytetrafluoroethylene) coated aluminum plate and production device thereof

Abstract

The invention discloses a fiber PTFE coated aluminum plate and a production device thereof, and is characterized in that the fiber PTFE coated aluminum plate comprises an aluminum plate layer, a bonding layer, a fiber layer and a PTFE layer, the aluminum plate layer and the fiber layer are mutually compounded and bonded through the bonding layer, and the PTFE layer covers one side, opposite to the aluminum plate layer, of the fiber layer; a plurality of fold parts are formed on the fiber layer, and each fold part is arranged in the width direction of the aluminum plate layer; and the wrinkle parts are uniformly distributed along the length direction of the aluminum plate layer. The wrinkle parts are uniformly arranged in the length direction of the aluminum plate layer, and deformation supplement in the length direction of the aluminum plate layer can be formed through the wrinkle parts.

Description

TECHNICAL FIELD

[0001] The present application relates to an aluminum plate, more particularly, to a fiber PTFE coated aluminum plate, and to a production device of the fiber PTFE coated aluminum plate. BACKGROUND

[0002] The fiber PTFE coated aluminum veneer as a new type of building material has attracted much attention due to its unique performance. PTFE (polytetrafluoroethylene) has excellent corrosion resistance, weather resistance, self-cleaning property and high light transmittance, while the aluminum veneer is known for its light weight, high strength and good processing performance. The surface of the aluminum veneer is first compounded with a glass fiber layer, so that the surface of the aluminum veneer has a layer of protection of the glass fiber, and then a PTFE layer is coated on the surface. Coating PTFE on the surface of the aluminum veneer not only improves the aesthetics of the building, but also enhances the durability and functionality of the building.

[0003] However, due to the large difference in thermal expansion coefficient between glass fiber and aluminum, the thermal expansion coefficient of glass fiber is relatively small, while the thermal expansion coefficient of aluminum plate is relatively large. For special use scenarios with large temperature difference, there will be a large difference in deformation between the aluminum plate layer and the fiber layer in the plate, especially for long strip-shaped plates, the whole plate will be curved, that is, the aluminum plate layer will be stretched and elongated, and will protrude and rise towards the aluminum plate layer, resulting in the plate being twisted, which is not conducive to the stability and other strength performance of the whole part.

[0004] Therefore, a new solution is needed to solve this problem. SUMMARY

[0005] The present application aims to overcome the shortcomings of the prior art and provide a fiber PTFE coated aluminum plate and a production device thereof.

[0006] To achieve the above-mentioned purpose, the present application adopts the following technical solution: a fiber PTFE coated aluminum plate, characterized in that it comprises an aluminum plate layer, a bonding layer, a fiber layer and a PTFE layer, the aluminum plate layer and the fiber layer are compounded and bonded to each other through the bonding layer, and the PTFE layer is coated on the side of the fiber layer away from the aluminum plate layer; the fiber layer is formed with a plurality of wrinkle portions, each wrinkle portion is formed along the width direction of the aluminum plate layer; and the wrinkle portions are uniformly arranged along the length direction of the aluminum plate layer.

[0007] The present application further provides that the fiber layer is a glass fiber layer, and the wrinkle portions form a buffer for the tensile deformation of the fiber layer.

[0008] The application is further provided with the fiber layer comprising longitudinal fiber filaments and transverse fiber filaments, which are interlaced with each other longitudinally and transversely; the longitudinal fiber filaments are arranged along the length direction of the aluminum plate layer, and the transverse fiber filaments are arranged along the width direction of the aluminum plate layer.

[0009] The application is further provided with the diameter of the longitudinal fiber filaments being greater than that of the transverse fiber filaments; from the cross-sectional direction, the longitudinal fiber filaments are arranged in the same plane along the fiber layer, and the transverse fiber filaments are alternately bent and woven between the longitudinal fiber filaments.

[0010] The application is further provided with the longitudinal fiber filaments comprising a fiber inner core and an outer coating layer, the outer coating layer being a PTFE coating layer and covering the fiber inner core; the diameter of the longitudinal fiber filaments is -times that of the transverse fiber filaments.

[0011] The application is further provided with the wrinkle part of the fiber layer being formed with a crease along the width direction of the fiber layer; the crease is formed by folding and hot pressing the fiber layer;

[0012] The application is further provided with the wrinkle part being formed with an inner concave side and an outer convex side on the front and back sides respectively, and the inner concave side faces the aluminum plate layer.

[0013] The application is further provided with the outer convex side of the wrinkle part protruding away from the aluminum plate layer, and the PTFE layer covers the fiber layer and the wrinkle part.

[0014] The application is further provided with the fiber layer being combined by the fiber layer combining mechanism during the combination.

[0015] The application is further provided with the surface of the aluminum plate layer being coated with a bonding layer in advance, and then the fiber layer is attached to the surface of the bonding layer; the fiber layer combining mechanism comprises a supporting roller one and a pressing roller one, the pressing roller one is located directly above the supporting roller one, and the pressing roller one and the supporting roller one are matched with each other to combine the fiber layer to the bonding layer under pressure.

[0016] The application is further provided with the outer periphery of the pressing roller one being provided with a plurality of accommodating recesses, the accommodating recesses correspond to the wrinkle part of the fiber layer, each accommodating recess is arranged along the axis direction of the pressing roller one, and the accommodating recesses are arranged in a ring array.

[0017] The application is further provided with the fiber layer combining mechanism further comprising a supporting roller two and a pressing roller two, the supporting roller two and the pressing roller two are located at the downstream position of the supporting roller one, and the supporting roller two and the pressing roller two are used to supplement the pressing of the fiber layer and the aluminum plate layer.

[0018] The application further provides that the fiber layer composite mechanism further comprises a hot drying module located between the support roller one and the support roller two, and capable of preliminarily drying the bonding layer.

[0019] The application further provides that the fiber layer is pretreated by a fiber layer pretreatment mechanism, which comprises a hot pressing die base, a lifting base and a pressing block one, the upper side of the hot pressing die base is provided with a hot pressing die groove, the lifting base is located on the upper side of the hot pressing die base and is capable of being adjusted up and down, and the pressing block one is installed on the lifting base and is opposite to the hot pressing die groove in the up-down direction, and is used for pressing and forming the wrinkle part in the hot pressing die groove.

[0020] The application further provides that the fiber layer pretreatment mechanism further comprises a glue supplementing die base located downstream of the hot pressing die base, the upper side of the glue supplementing die base is provided with a glue supplementing groove, a pressing block two is located directly above the glue supplementing groove, the pressing block two is installed on the lifting base and is capable of being lifted along with the lifting base, and a glue supplementing groove is formed in the middle of the inner side of the glue supplementing groove, and the glue supplementing groove is filled with a bonding agent.

[0021] The application further provides that the fiber layer is cut before being pretreated, the wrinkle part of the fiber layer is provided with a notch, and the notch is across the two sides of the crease; and the wrinkle part of the fiber layer is immersed in the bonding agent in the glue supplementing groove, and the bonding agent can enter the inner concave side of the wrinkle part of the fiber layer from the notch.

[0022] The application further provides a production device of the fiber PTFE coated aluminum plate.

[0023] In summary, the application has the following beneficial effects:

[0024] By adopting the composite structure of the aluminum plate layer, the fiber layer and the PTFE layer, the fiber layer is a glass fiber layer, and a plurality of wrinkle parts are formed in the fiber layer, and each wrinkle part is formed along the width direction of the aluminum plate layer. The wrinkle parts are uniformly arranged along the length direction of the aluminum plate layer, and the wrinkle parts can form deformation compensation in the length direction of the aluminum plate layer. After the plate is deformed by heating, the deformation amount of the aluminum plate in the length direction is large, and the thermal deformation amount of the glass fiber itself is small. At this time, due to the existence of the wrinkle part in the fiber layer, the glass fiber at the wrinkle part has length redundancy, and the wrinkle part can play a regulating role in the stretching process. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 FIG. 1 is a schematic view of a multilayer structure of a fiber PTFE coated aluminum plate in the embodiment;

[0026] Figure 2 FIG. 2 is a sectional view of a fiber PTFE coated aluminum plate in the embodiment.

[0027] Figure 3 a cross-sectional view of the fiber layer in the embodiment;

[0028] Figure 4 a structure view of the crease of the fiber layer in the embodiment;

[0029] Figure 5 a structure view of the fiber layer composite mechanism in the embodiment;

[0030] Figure 6 another structure view of the fiber layer composite mechanism in the embodiment;

[0031] Figure 7 a structure view of the fiber layer pretreatment mechanism in the embodiment;

[0032] Figure 8 a structure view of the crease of the fiber layer in the embodiment;

[0033] Figure 9 another structure view of the fiber layer pretreatment mechanism in the embodiment.

[0034] The figure mark: aluminum plate layer 1; adhesive layer 2; fiber layer 3; longitudinal fiber filament 301; transverse fiber filament 302; fiber inner core 303; outer cladding layer 304; wrinkle part 310; inner concave side 311; outer convex side 312; crease 313; notch 314; PTFE layer 4; fiber layer composite mechanism 5; supporting roller one 501; pressing roller one 502; containing recess 503; supporting roller two 504; pressing roller two 505; fiber layer pretreatment mechanism 6; hot pressing die base 610; hot pressing die groove 611; pressing block one 612; glue filling die base 620; glue filling die groove 621; pressing block two 622; glue filling recess 623; lifting base 630. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work belong to the scope of protection of the present application.

[0036] The embodiment discloses a fiber PTFE coated aluminum plate, referring to Figure 1 , Figure 2 , comprising an aluminum plate layer 1, an adhesive layer 2, a fiber layer 3 and a PTFE layer 4, wherein the aluminum plate layer 1 serves as a base, and the surface of the aluminum plate layer 1 is cleaned, pretreated, and then primed to optimize the surface properties of the aluminum plate layer 1, which is conducive to the adhesion of the fiber layer 3;

[0037] The adhesive layer 2 is coated on the surface of the aluminum plate layer 1, and then the fiber layer 3 is attached to the surface of the adhesive layer 2. The adhesive layer 2 can be combined with the surface of the fiber layer 3 by pressing the multi-layer structure. Then, the PTFE layer 4 is formed by coating PTFE paint on the surface of the fiber layer 3. The PTFE layer 4 has good stability and can make the entire aluminum plate have good weather resistance.

[0038] In this embodiment, the fiber layer 3 is a glass fiber layer. The fiber layer 3 includes longitudinal fiber filaments 301 and transverse fiber filaments 302. The longitudinal fiber filaments 301 and the transverse fiber filaments 302 are interlaced with each other to form a longitudinal and transverse grid structure. When the fiber layer 3 is combined and adhered, part of the adhesive of the adhesive layer 2 will penetrate into the gap between the fibers.

[0039] The PTFE layer 4 is coated on the outer side of the fiber layer 3. Part of the paint of the PTFE layer 4 will also penetrate into the gap between the fibers of the fiber layer 3, which can increase the bonding strength between the PTFE layer 4 and the fiber layer 3. Moreover, part of the adhesive layer 2 and the PTFE layer 4 that penetrate into the gap between the fibers of the fiber layer 3 will contact each other, which can improve the composite stability of the coating.

[0040] The fiber layer 3 is a glass fiber layer. There is a large difference in the thermal expansion coefficient between glass fiber and aluminum. The thermal expansion coefficient of glass fiber is relatively small, while the thermal expansion coefficient of aluminum plate is relatively large. For special use scenarios with large temperature differences, there will be a large difference in deformation between the aluminum plate layer 1 and the fiber layer 3 in the plate. Especially for long strip-shaped plates, the whole plate will be curved, that is, the aluminum plate layer 1 will be deformed and elongated, and will protrude towards the aluminum plate layer 1, which will cause the plate to be twisted and affect the stability and other strength performance of the whole part.

[0041] In this embodiment, the fiber layer 3 is formed with a plurality of wrinkle portions 310, each wrinkle portion 310 being formed along the width direction of the aluminum plate layer 1. The wrinkle portions 310 are uniformly arranged along the length direction of the aluminum plate layer 1, and the wrinkle portions 310 can form a deformation supplement in the length direction of the aluminum plate layer 1. After the plate is deformed by heat, the deformation amount of the aluminum plate in the length direction is large, while the thermal deformation amount of the glass fiber itself is small. At this time, due to the presence of the wrinkle portions 310 in the fiber layer 3, the glass fiber at the wrinkle portions 310 has a length redundancy, which can play a role in adjusting and has a similar effect of expansion joint during stretching.

[0042] In the production process, the actual length of the fiber layer 3 is also slightly longer than the aluminum plate layer 1. The raw material of the aluminum plate layer 1 is an aluminum strip roll, and the material of the fiber layer 3 is a glass fiber mesh belt. For example, to produce an aluminum plate with a length of 1000 meters, the length of the aluminum strip required is 100 meters, while the length of the glass fiber mesh belt may be slightly longer, about 1000.2-1001.00 meters, there is a certain length of redundancy, and this length of redundancy can be evenly distributed in the entire length of the aluminum plate through the wrinkle part 310, thereby playing a deformation buffer effect in the length expansion and contraction process.

[0043] In addition, in the width direction of the aluminum plate, there is also a certain difference in thermal expansion between the aluminum plate layer 1 and the fiber layer 3. In order to enable the fiber layer 3 to achieve adaptive deformation, the fiber layer 3 is further designed.

[0044] Referring to Figure 3 As shown in the fiber layer 3, the longitudinal fiber filaments 301 are arranged along the length direction of the aluminum plate layer 1, and the transverse fiber filaments 302 are arranged along the width direction of the aluminum plate layer 1, forming a longitudinal and transverse interlaced woven structure. Moreover, the diameter of the longitudinal fiber filaments 301 is greater than that of the transverse fiber filaments 302, and the longitudinal fiber filaments 301 mainly support the fiber layer 3. In the cross-sectional direction, each longitudinal fiber filament 301 is arranged along the same plane of the fiber layer 3, and each longitudinal fiber filament 301 is arranged in parallel and at equal intervals, and in the weaving process, the longitudinal fiber filaments 301 hardly bend in the length direction. The transverse fiber filaments 302 are thinner and are alternately curved and woven between the longitudinal fiber filaments 301, and the transverse fiber filaments 302 are in a curved state.

[0045] When the fiber layer 3 needs to produce lengthwise expansion and contraction deformation, the wrinkle part 310 mainly plays a role in expansion and contraction buffering, and when the fiber layer 3 produces widthwise deformation, the curved transverse fiber filaments 302 can produce widthwise tensile buffering, and when the fiber layer 3 produces widthwise deformation, the longitudinal fiber filaments 301 mainly serving as supports in the fiber layer 3 do not need to produce lengthwise deformation, but only need to produce certain expansion and contraction changes in the arrangement width in the width direction, so that the widthwise deformation of the fiber layer 3 is more smooth and stable.

[0046] Specifically, in the present embodiment, the diameter of the longitudinal fiber filaments 301 is 5-10 times that of the transverse fiber filaments 302, and the two have a large diameter difference, and when woven into a grid shape, the longitudinal fiber filaments can maintain a state of stable arrangement in the longitudinal direction, and the transverse fiber filaments only need to ensure that they are interlaced and woven with the longitudinal fiber filaments, and the transverse fiber filaments mainly serve to maintain the longitudinal fiber filaments.

[0047] In the embodiment, the longitudinal fiber yarn 301 can adopt a composite coating structure, specifically including a fiber inner core 303 and an outer coating layer 304, wherein the fiber inner core 303 is a glass fiber, and the outer coating layer 304 is a PTFE coating layer and is coated on the outer surface of the fiber inner core 303. By coating the longitudinal fiber yarn 301 in advance, the fiber yarn can be more stably protected.

[0048] For the wrinkle part 310, the wrinkle part 310 of the fiber layer 3 is formed with a fold 313 along the width direction of the fiber layer 3. By bending the fiber layer 3 along the fold 313 and hot-pressing, the fiber layer 3 can be bent at the fold 313, and the wrinkle part 310 is formed by folding and hot-pressing.

[0049] Referring to Figure 4 As shown, the wrinkle part 310 is formed with an inner concave side 311 and an outer convex side 312 on the front and back sides, respectively. The inner concave side 311 faces the aluminum plate layer 1, and the outer convex side 312 of the wrinkle part 310 protrudes away from the aluminum plate layer 1. In the coating process, the PTFE layer 4 can cover the fiber layer 3 and cover the wrinkle part 310 inside. After the PTFE layer 4 is coated and solidified, the outer surface of the PTFE layer 4 can form a flat state. The wrinkle and protrusion structure of the wrinkle part 310 will be sandwiched between the PTFE layer 4 and the bonding layer 2, and the wrinkle state will not affect the flatness of the aluminum plate surface. The effect of coating can compensate for the raised and bent state of the wrinkle.

[0050] The embodiment also discloses a production device of a fiber PTFE coated aluminum plate, which comprises a bonding layer coating mechanism, a fiber layer composite mechanism 5, a PTFE layer 4 coating mechanism, a drying mechanism and a fiber layer pretreatment mechanism 6.

[0051] The bonding layer coating mechanism can coat the surface of the aluminum plate layer 1, and can coat the bonding layer 2 on the surface of the aluminum plate layer 1 in advance, and then adhere the fiber layer 3 to the surface of the bonding layer 2. When the fiber layer 3 is bonded and combined, the fiber layer 3 is combined by the fiber layer composite mechanism 5.

[0052] Referring to Figure 5 As shown, the fiber layer composite mechanism 5 comprises a supporting roller one 501 and a pressing roller one 502. The axes of the pressing roller one 502 and the supporting roller one 501 are fixed relative to each other, and the two can rotate in opposite directions synchronously. The pressing roller one 502 and the supporting roller one 501 form a pressing gap between the aluminum plate layer 1 and the layers, and can press the layers.

[0053] The pressing roller one 502 is located directly above the supporting roller one 501, and the pressing roller one 502 and the supporting roller one 501 cooperate to press and combine the fiber layer 3 to the bonding layer 2.

[0054] Since the fiber layer 3 has uniformly distributed pleats 310, to avoid flattening the pleats 310, several receiving recesses 503 are provided on the outer periphery of the pressure roller 502. The receiving recesses 503 correspond to the pleats 310 of the fiber layer 3. Each receiving recess 503 is arranged along the axial direction of the pressure roller 502, and the receiving recesses 503 are arranged in a ring array. In the circumferential direction, the fiber layer 3 passes around the pressure roller 502, and each pleat 310 can fall exactly into the receiving recess 503. When the receiving recess 503 passes around the side near the support roller 501, there will be no direct compression between the receiving recess 503 and the support roller 501, thereby forming a compression gap at the corresponding position of the receiving recess 503 and the pleats 310.

[0055] During the extrusion lamination process, the adhesive and other coatings applied to the surface of the aluminum plate layer 1 can be compressed and moved toward the recess 503 and the wrinkled portion 310. Some of the adhesive can be concentrated and replenished near the wrinkled portion 310, especially concentrated on the concave side 311 of the wrinkled portion 310. The adhesive concentrated on the concave side 311 can support the inside of the concave side 311, thereby enabling the wrinkled portion 310 to form a bent and wrinkled state, preventing the wrinkled portion 310 from being compressed and returning to flatness, and maintaining the buffer wrinkle length of the wrinkled portion 310.

[0056] Furthermore, referring to Figure 6 As shown, the fiber layer composite mechanism 5 also includes a second support roller 504 and a second pressure roller 505. The second support roller 504 and the second pressure roller 505 are located downstream of the first support roller 501. The second support roller 504 and the second pressure roller 505 can supplement the pressing of the fiber layer 3 and the aluminum plate layer 1.

[0057] And the fiber layer composite mechanism 5 also includes a hot baking module, which is located between the support roller one 501 and the support roller two 504, and can preliminarily bake the bonding layer 2. Through the hot baking module, the aluminum plate layer with the composite fiber layer can be preliminarily heated and baked, and the baking state can be roughly half of the baking state of the bonding layer 2, so that the bonding layer 2 is preliminarily solidified to form a preliminary bonding effect, at this time the fiber layer 3 can be roughly bonded with the aluminum plate layer 1, and the positions of the two can be kept in a roughly stable state. After the preliminary baking is completed, the composite plate of the aluminum plate layer 1 and the fiber layer 3 is further extruded by the support roller two 504 and the pressure roller two 505, which can further press the two together, and through the roller pressing, the height of the wrinkle part 310 can be extruded to avoid the over-protruding height of the convex side 312 of the wrinkle part 310. By extruding the convex side 312 up and down, the convex side 312 of the wrinkle part 310 can be extruded and flattened, thereby reducing the protruding height of the wrinkle part 310. In addition, since the plate has been preliminarily baked by the hot baking module, the fiber layer 3 can avoid large slippage on the surface of the aluminum plate layer 1, thereby keeping the existence of the wrinkle part 310, and maintaining the deformation buffer space of the wrinkle part 310.

[0058] Then, the PTFE layer 4 is formed by coating the PTFE coating on the surface of the fiber layer 3 through the PTFE layer 4 coating mechanism, and then the aluminum plate is baked and solidified through the baking mechanism, so that the bonding layer 2 and the PTFE layer 4 can be fused and solidified, thereby forming a bent composite fiber aluminum plate.

[0059] Referring to Figures 7-9 In this embodiment, the wrinkle part 310 of the fiber layer 3 is pretreated by the fiber layer pretreatment mechanism 6.

[0060] Referring to Figure 7 As shown in the figure, the fiber layer pretreatment mechanism 6 includes a hot pressing die seat 610, a lifting seat 630 and a pressing block one 612. The hot pressing die groove 611 is formed on the upper side of the hot pressing die seat 610, which is in the shape of an inverted triangle with a wide upper side and a narrow lower side, and can form a support at the bottom during the hot pressing process.

[0061] The lifting seat 630 is located on the upper side of the hot pressing die seat 610 and can be adjusted up and down by a lifting driver. The pressing block one 612 is installed on the lifting seat 630, and the pressing block one 612 is opposite to the hot pressing die groove 611 up and down. The lower side of the pressing block one 612 is in the shape of a wide upper side and a narrow lower side, and the shape of the lower side of the pressing block one 612 is matched with the hot pressing die groove 611. During the pressing process, the lower part of the pressing block one 612 can press the fiber layer 3 into the hot pressing die groove 611, and the wrinkle part 310 can be formed by pressing and combining in the hot pressing die groove 611.

[0062] Furthermore, a heater is provided inside the hot press mold base 610 to heat the hot press mold base 610, so that the hot press mold groove 611 is in a heated state. The fiber layer 3 is pressed into the hot press mold groove 611 by the pressure block 612, so that hot pressing can be achieved in the hot press mold groove 611, thereby initially hot pressing and shaping the wrinkled part 310, and thus initially forming the crease effect of the wrinkled part 310.

[0063] Furthermore, referring to Figure 8 As shown, the fiber layer 3 is cut before pretreatment. A notch 304 is provided at the fold 310 of the fiber layer 3, and the notch 304 spans both sides of the fold 313. The notch 304 allows adhesive or other coatings to partially pass through, so that the coating can enter the concave side 311 of the fold 310 through the notch 304, thereby forming support in the concave side 311 and forming pre-support in the concave side 311, which is beneficial for the subsequent formation of the fold 310.

[0064] Furthermore, referring to Figure 9 As shown, the fiber layer pretreatment mechanism 6 also includes a glue-applying mold base 620, which is located downstream of the hot press mold base 610. The fiber layer 3 is first hot-pressed by the hot press mold base 610 to form creases, and then glue-applying treatment is performed at the position of the crease 313 by the glue-applying mold base 620.

[0065] Specifically, a glue-applying mold groove 621 is provided on the upper side of the glue-applying mold base 620. The shape of the glue-applying mold groove 621 is roughly larger at the top and smaller at the bottom. A pressure block 622 is provided directly above the glue-applying mold groove 621. The pressure block 622 is fixedly installed on the lifting base 630. The pressure block 622 can move up and down with the lifting base 630, so that the pressure block 612 and the pressure block 622 can move up and down synchronously for molding.

[0066] The pressure block 622 can squeeze the creases 313 of the fiber layer 3 into the glue filling mold groove 621. In addition, a glue filling groove 623 is provided in the middle of the inner side of the glue filling groove 623. The glue filling groove 623 can form a relief cavity on the inner wall of the glue filling mold groove 621, and then the glue filling groove 623 can be filled with adhesive.

[0067] When the creases 313 of the fiber layer 3 are pressed into the glue supplement groove 623 by the pressing block 622, the wrinkle part 310 of the fiber layer 3 is immersed in the adhesive in the glue supplement groove 623, and the adhesive can enter the inner concave side 311 of the wrinkle part 310 of the fiber layer 3 from the gap 304. At the wrinkle, the pre-supplement of the adhesive can be formed on the inner side of the crease 313, and then the preliminary drying and curing are carried out, on the one hand, the preliminary shaping of the crease 313 can be realized through the adhesive and hot pressing, and on the other hand, the supplement of the adhesive on the inner side of the crease 313 can be realized, thereby facilitating the maintenance of the wrinkle effect of the wrinkle part 310 in the subsequent compounding process.

[0068] The above only describes the preferred embodiments of the present application, and the protection scope of the present application is not limited to the above-described embodiments. Any technical solutions falling within the concept of the present application shall fall within the protection scope of the present application. It should be noted that, for ordinary skilled persons in the art, some improvements and refinements without departing from the principles of the present application shall also be considered as falling within the protection scope of the present application.

Claims

1. A fibrous PTFE-clad aluminum sheet, characterized by, The application relates to an aluminum plate layer (1), a bonding layer (2), a fiber layer (3) and a PTFE layer (4), wherein the aluminum plate layer (1) and the fiber layer (3) are bonded to each other through the bonding layer (2), the PTFE layer (4) covers one side of the fiber layer (3) which is away from the aluminum plate layer (1), the fiber layer (3) is provided with a plurality of wrinkle portions (310), each wrinkle portion (310) is arranged along the width direction of the aluminum plate layer (1), and the wrinkle portions (310) are uniformly arranged along the length direction of the aluminum plate layer (1).

2. The fibrous PTFE-clad aluminum sheet according to claim 1, characterized by The fiber layer (3) is a glass fiber layer, and the wrinkle portions (310) form a buffer for tensile deformation of the fiber layer (3). The fiber layer (3) comprises longitudinal fiber filaments (301) and transverse fiber filaments (302), the longitudinal fiber filaments (301) and the transverse fiber filaments (302) are interlaced with each other, the longitudinal fiber filaments (301) are arranged along the length direction of the aluminum plate layer (1), and the transverse fiber filaments (302) are arranged along the width direction of the aluminum plate layer (1).

3. The fibrous PTFE-clad aluminum sheet according to claim 2, characterized in that The diameter of the longitudinal fiber filaments (301) is greater than that of the transverse fiber filaments (302), the longitudinal fiber filaments (301) are arranged in the same plane along the fiber layer (3) in the cross-sectional direction, and the transverse fiber filaments (302) are alternately bent and woven between the longitudinal fiber filaments (301).

4. The fibrous PTFE-clad aluminum sheet according to claim 3, characterized in that The longitudinal fiber filaments (301) comprise a fiber inner core (303) and an outer coating layer (304), the outer coating layer (304) is a PTFE coating layer and covers the fiber inner core (303), and the diameter of the longitudinal fiber filaments (301) is 5-10 times that of the transverse fiber filaments (302).

5. The fibrous PTFE-clad aluminum sheet of claim 1, wherein The wrinkle portions (310) of the fiber layer (3) are provided with creases (313) along the width direction of the fiber layer (3), and the creases (313) are formed by folding and hot-pressing the fiber layer (3). The wrinkle portions (310) are respectively provided with concave sides (311) and convex sides (312) on the front and back sides, and the concave sides (311) face the aluminum plate layer (1).

6. The fibrous PTFE-clad aluminum sheet according to claim 5, characterized in that The convex sides (312) of the wrinkle portions (310) protrude away from the aluminum plate layer (1), the PTFE layer (4) covers the fiber layer (3) and the wrinkle portions (310).

7. The fibrous PTFE-clad aluminum sheet of claim 1, wherein The fiber layer (3) is combined through a fiber layer combining mechanism (5) during the combination; The surface of the aluminum plate layer (1) is coated with the bonding layer (2) in advance, and then the fiber layer (3) is attached to the surface of the bonding layer (2), the fiber layer combining mechanism (5) comprises a supporting roller one (501) and a pressing roller one (502), the pressing roller one (502) is located directly above the supporting roller one (501), and the pressing roller one (502) and the supporting roller one (501) are matched to press the fiber layer (3) to the bonding layer (2). The outer periphery of the first pressing roller (502) is provided with a plurality of accommodating recesses (503) corresponding to the pleat portions (310) of the fiber layer (3), each of the accommodating recesses (503) is arranged along the axial direction of the first pressing roller (502), and the accommodating recesses (503) are arranged in a ring array.

8. The fibrous PTFE-clad aluminum sheet of claim 1, wherein The pleat portions (310) of the fiber layer (3) are preprocessed by the fiber layer preprocessing mechanism (6), and the fiber layer preprocessing mechanism (6) comprises a hot pressing die base (610), a lifting seat (630) and a pressing block one (612), the upper side of the hot pressing die base (610) is provided with a hot pressing die groove (611), the lifting seat (630) is located on the upper side of the hot pressing die base (610) and can be adjusted up and down, and the pressing block one (612) is installed on the lifting seat (630) and is opposite to the hot pressing die groove (611) in the up-down direction, and is used for pressing and forming the pleat portions (310) in the hot pressing die groove (611).

9. The fibrous PTFE-clad aluminum sheet of claim 8, wherein The fiber layer preprocessing mechanism (6) further comprises a glue filling die base (620), the glue filling die base (620) is located downstream of the hot pressing die base (610), the upper side of the glue filling die base (620) is provided with a glue filling groove (623), a pressing block two (622) is arranged above the glue filling groove (623), the pressing block two (622) is installed on the lifting seat (630) and can be lifted and lowered with the lifting seat (630), and the inner side of the glue filling groove (623) is provided with a glue filling groove (623) in the middle, and the glue filling groove (623) is filled with adhesive; The fiber layer (3) is cut before preprocessing, the pleat portions (310) of the fiber layer (3) are provided with notches (304), and the notches (304) cross the two sides of the creases (313); the pleat portions (310) of the fiber layer (3) are immersed in the adhesive in the glue filling groove (623), and the adhesive can enter the inner concave side (311) of the pleat portions (310) of the fiber layer (3) from the notches (304).

10. A production apparatus for fiber-coated PTFE aluminum sheets, characterized in that, A fiber PTFE-coated aluminum plate as claimed in any one of claims 1 to 9. A fiber PTFE-coated aluminum plate as claimed in any one of claims 1 to 9.

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