WO2025155459A1

WO2025155459A1 - Composite reinforced rockwool board and production equipment thereof

Info

Publication number: WO2025155459A1
Application number: PCT/US2025/010689
Authority: WO
Inventors: Chunming SHI; Zhihong Cai; Haipo WANG; Yang Li
Original assignee: Owens Corning Intellectual Capital LLC
Current assignee: Owens Corning Intellectual Capital LLC
Priority date: 2024-01-19
Filing date: 2025-01-08
Publication date: 2025-07-24
Anticipated expiration: 2026-07-19
Also published as: CN222080279U

Abstract

The present utility model discloses a composite reinforced rockwool board and a production equipment for producing same. The composite reinforced rockwool board comprises a rockwool base layer, two backing layers, two first bonding layers, a surface layer, and a second bonding layer. The two backing layers are respectively located on two outer sides of the rockwool base layer along the thickness direction. The two first bonding layers each are disposed between the two backing layers and the rockwool base layer along the thickness direction to bond the two backing layers to the rockwool base layer. The surface layer is disposed on one side of the backing layer away from the rockwool base layer. The second bonding layer is located between the surface layer and the backing layer along the thickness direction to bond the surface layer to the backing layer. The 90° peel strength between the surface layer and the backing layer ranges from 4N/75mm to 30N/75mm. The present utility model can improve the surface strength and integrity of the board. By bonding the surface layer on the outer surface of the backing layer, the strength of the connecting structure of the surface layer can be improved, and the surface strength of the board can be further improved, which thereby improves the service life of the board.

Description

COMPOSITE REINFORCED ROCKWOOL BOARD AND PRODUCTION EQUIPMENT THEREOF

CROSS-REFERENCE TO RELATED APPLICATION

[0001] This application claims priority to Chinese Patent Application No. 202420138215.9 filed on January 19, 2024, the disclosure of which is incorporated by reference herein in its entirety.

BACKGROUND

[0002] The invention generally relates to the technical field of building materials, and more specifically to a composite reinforced rockwool board and a production equipment thereof.

[0003] In the field of building external wall insulation board, some thermal insulation plates made of organic foam are gradually replaced by thermal insulation plates containing rock wool. With basalt and other natural ores as main raw materials, rockwool insulation board is melted into fiber at a high temperature, added with an appropriate amount of binder, and made by curing and processing. The rockwool insulation board has the function of fire prevention, whose material combustion grade can reach class A, and it is also characterized in light weight and heat preservation. However, the rockwool insulation board also has some defects such as low strength, loose powder, and poor integrity, which limits its large-scale promotion and application.

[0004] In the related technology, the above defects of the rockwool board are solved by attaching a layer of surface layer to the surface of the rockwool insulation board. However, the existing surface layer is directly attached to the rockwool board, and due to the defects of the rockwool board itself, the surface layer is easy to fall off because of the low fastness of the connection with the rockwool board.

SUMMARY

[0005] A series of simplified concepts is introduced into the portion of Summary, which would be further illustrated in the portion of the detailed description. The Summary of the inventive concepts does not mean attempting to define the key feature and essential technical feature of the claimed technical solution, let alone determining the protection scope thereof.

[0006] To at least partially solve the problem, the first aspect of the present invention provides a composite reinforced rockwool board, comprising: a rockwool base layer; a backing layer disposed on the outer side of the rockwool base layer along a thickness direction; a first bonding layer disposed between the backing layer and the rockwool base layer along the thickness direction to bond the backing layer to the rockwool base layer; a surface layer disposed on one side of the backing layer away from the rockwool base layer along the thickness direction; and a second bonding layer disposed between the surface layer and the backing layer along the thickness direction to bond the surface layer to the backing layer, with a 90° peel strength between the surface layer and the backing layer ranging from 4 N/75 mm to 30 N/75 mm.

[0007] According to the composite reinforced rockwool board of the first aspect of the present invention, the surface of the rockwool base layer facing outward along the thickness direction can be protected respectively by configuring the backing layer, thereby improving the surface strength and integrity of the board and preventing the rockwool base layer from falling powder. Further, by bonding the surface layer on the outer surface of the backing layer, the strength of the connecting structure of the surface layer can be improved, and the surface strength of the board can be further improved, which improves the protection performance of the rockwool base layer. In the state of use, the side with the surface layer can be oriented to the outside of the building, etc., which thereby is conducive to enhancing the thermal insulation performance and the service life of the board.

[0008] Optionally, the surface layer is constructed as a structure made of at least one of a metal film, a plastic film, a fiber felt and a paper.

[0009] Optionally, the surface layer comprises an aluminum foil layer, a mesh cloth layer and a kraft paper layer, and the mesh cloth layer is bonded to the aluminum foil layer and the kraft paper layer.

[0010] Optionally, the surface layer comprises a polypropylene film layer, a mesh cloth layer and a kraft paper layer, and the mesh cloth layer is bonded between the polypropylene film layer and the kraft paper layer.

[0011] Optionally, the surface layer comprises an aluminum foil layer and a glass fiber cloth layer, and the aluminum foil layer is bonded to the glass fiber cloth layer.

[0012] Optionally, the metal film is constructed as aluminum foil.

[0013] Optionally, the plastic film is constructed as one of a polypropylene film, a polyethylene terephthalate film, polyethylene film and polyvinyl chloride film.

[0014] Optionally, the fiber felt is constructed as one of glass fiber cloth, mesh cloth and non-woven cloth.

[0015] Optionally, the paper is constructed as a kraft paper.

[0016] Optionally, the second bonding layer is constructed as a structural layer formed of water-based adhesive after curing.

[0017] Optionally, the second bonding layer is constructed as a structural layer formed of hot melting polymer material after hot melting and curing.

[0018] Optionally, the rockwool base layer has a density ranging from 40 kg/m³ to 220 kg/m³; and/or the rockwool base layer has a thickness ranging from 15 mm to 200 mm. [0019] Optionally, 90° peel strength between the backing layer and the rockwool base layer ranges from 4 N/75 mm to 30 N/75 mm.

[0020] Optionally, the backing layer is constructed as at least one of a glass fiber woven fabric, a coated non-woven felt, a non-coated non-woven felt, and a mesh cloth.

[0021] Optionally, the first bonding layer is constructed as a structural layer formed of at least one of a phenolic resin, an epoxy resin, a polyurethane, an acrylic resin, a sugar-based resin, a urea-formaldehyde resin and a polyvinyl alcohol resin after curing.

[0022] The second aspect of the present invention provides a composite reinforced rockwool board production equipment for producing the composite reinforced rockwool board, wherein the production equipment comprises: a curing furnace; a transfer unit for conveying rockwool matrix disposed extending along a conveying direction and passing through the curing furnace; a first pre-composite unit disposed on an upstream side of the curing furnace along the conveying direction and configured to glue the backing layer and convey the backing layer to the transfer unit such that the backing layer is attached to the rockwool matrix; and a post-composite unit disposed on a downstream side of the curing furnace along the conveying direction and configured to convey the surface layer to the transfer unit such that the surface layer is attached to an upper portion of the backing layer.

[0023] According to the composite reinforced rockwool board production equipment of the second aspect of this invention, the rockwool matrix is transported through the transfer unit; the backing layer is sized and transported to the transfer unit by the first pre-composite unit, such that the backing layer can be attached to the rockwool matrix. The bonded rockwool matrix and backing layer are then transported and passed through the curing furnace by means of the transfer unit to dry and cure the glue of the rockwool matrix and backing layer through the curing furnace. After that, the surface layer is transported to the transfer unit by the post-composite unit such that the surface layer can be attached to the upper portion of the backing layer. This can realize online composite of the rockwool matrix, backing layer and surface layer, which is conducive to improving the production efficiency as well as product consistency and yield.

[0024] Optionally, the first pre-composite unit is arranged corresponding to an upper portion of the transfer unit, and the post-composite unit is arranged corresponding to an upper portion of the transfer unit.

[0025] Optionally, the post-composite unit comprises: a post-unwinding assembly for uncoiling a rolled surface layer.

[0026] Optionally, the post-composite unit further comprises: a post-gluing assembly for applying a water-based adhesive to an unwound surface layer.

[0027] Optionally, the production equipment further comprises: a heating roller disposed downstream of the post-unwinding assembly along a movement direction of the post-unwinding assembly releasing the surface layer and close to an upper portion of the transfer unit, wherein the heating roller is suitable for pressing against a surface of the surface layer away from the backing layer to apply a force on the surface layer against the backing layer and heat the surface layer.

[0028] Optionally, the production equipment further comprises: a heating roller disposed downstream of the post-unwinding assembly along a movement direction of the post-unwinding assembly releasing the surface layer and close to an upper portion of the transfer unit, wherein the heating roller is suitable for pressing against a surface of the surface layer away from the backing layer to apply a force on the surface layer against the backing layer and heat the surface layer.

[0029] Optionally, the production equipment further comprises a membrane guide assembly disposed between the post-gluing assembly and the heating roller along the conveying direction and adapted to support the surface layer and prevent the surface layer from deviating in a width direction, which is a horizontal direction perpendicular to the conveying direction.

[0030] Optionally, the production equipment further comprises a support member disposed between the post-gluing assembly and the heating roller along the conveying direction and adapted to support the surface layer.

[0031] Optionally, the production equipment further comprises a lifting assembly connected to the heating roller and adapted to adjust a position of the heating roller along a height direction.

[0032] Optionally, the lifting assembly comprises: a lifting support movably arranged along the height direction; a lead screw disposed extending along the height direction and screwed to the lifting support; a drive shaft arranged rotationally and intersected with the lead screw; a transmission member connected to the drive shaft and the lead screw to transmit power between the drive shaft and the lead screw; and a motor whose output shaft is connected to the drive shaft to drive the drive shaft to rotate.

[0033] Optionally, the production equipment further comprises: a second pre-composite unit disposed on an upstream side of the curing furnace along the conveying direction and corresponding to a lower portion of the rockwool matrix on the transfer unit, wherein the second pre-composite unit is configured to size the backing layer below the rockwool matrix and convey the backing layer to a lower portion of the rockwool matrix such that the backing layer is attached to the lower portion of the rockwool matrix.

[0034] Optionally, the first pre-composite unit and the second pre-composite unit both comprise: a pre-unwinding assembly configured to uncoil a rolled backing layer; and a pre-gluing assembly configured to apply a binder to the backing layer for uncoiling. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The following drawings are hereby incorporated as part of the present disclosure for a better understanding of the general inventive concepts. The embodiments of the invention are illustrated and described in the drawings in order to explain the principles of the inventive concepts. In the drawings:

[0036] FIG. 1 shows a structure diagram of a composite reinforced rockwool board according to a preferred embodiment of the present invention;

[0037] FIG. 2 shows a structure diagram of a production equipment for producing the composite reinforced rockwool board according to a preferred embodiment of the present invention;

[0038] FIG. 3 shows a structure diagram of a production equipment for producing the composite reinforced rockwool board according to another preferred embodiment of the present invention;

[0039] FIG. 4 shows a structure diagram of a post-composite unit according to a preferred embodiment of the present invention; and

[0040] FIG. 5 shows a block diagram of a composite reinforced rockwool board without a surface layer in a 90° peel strength test according to a preferred embodiment of the present invention.

[0041] EXPLANATION OF REFERENCE NUMBERALS :

10: Composite reinforced rockwool board 11 : Rockwool base layer

12: Backing layer 13: First bonding layer

14: Surface layer 15: Second bonding layer

200: Production equipment 210: Curing furnace

220: Transfer unit 230: First pre-composite unit

240: Second pre-composite unit 250: Post-composite unit

260: Post-unwinding assembly 261 : Post-unwinding support

270: Post-gluing assembly 272: Post-gluing groove

273: First post-gluing roller 274: Second post-gluing roller

275: First guide roller 276: Second guide roller

277: Third guide roller 278: Fourth guide roller

280: Heating roller 290: Membrane guide assembly

300: Lifting assembly 301 : Lifting support

302: Drive shaft 303: Transmission member

304: Lead screw 305: Motor 310: Support member 30: Rockwool matrix

DI : Conveying direction D2: Height direction

DETAILED DESCRIPTION

[0042] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the general inventive concepts. However, it is obvious to those skilled in this art that the present invention may be implemented without one or more of these details. Some technical features well-known in this art are not described in other examples in order to avoid confusion with the present invention.

[0043] In order to thoroughly understand the embodiments of the present invention, a detailed structure will be provided in the following description. Obviously, the implementation of the embodiments of the present invention is not limited to the specific details familiar to those skilled in the art.

[0044] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the present invention. The singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprising" and/or "including," when used in this specification, specify the presence of stated features, wholes, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and/or combinations thereof.

[0045] Ordinals such as "first" and "second" quoted in this disclosure are merely identifiers and do not carry any other meaning, such as a specific order. Moreover, for example, the term "first component" itself does not imply the presence of "second component", and the term "second component" itself does not imply the presence of "first component." It should be noted that the terms "up", "down", "front", "back", "left", "right", "inside", "outside" and similar expressions used herein are for illustrative purposes only and are not restrictive.

[0046] The "parallel" / "vertical" and similar expressions used in the application include the absolute parallel/vertical relationship and the approximate parallel/vertical relationship (for example, the relationship within the range of -5° to +5° from the absolute parallel/vertical), which can achieve the same effect.

[0047] The present invention provides a composite reinforced rockwool board 10 and a production equipment 200 for producing the composite reinforced rockwool board 10.

[0048] The exemplary embodiments of the present invention will now be explained in further details with reference to FIGS. 1 to 5 of the accompanying drawings, which show the representative embodiments of the invention and do not limit the invention.

[0049] As shown in FIGS. 1 to 5, the composite reinforced rockwool board 10 according to the present invention may comprises a rockwool matrix 11, a backing layer 12, a first bonding layer 13, a surface layer 14, and a second bonding layer 15. The backing layer 12 are located on the outerside of the rockwool base layer 11 along the thickness direction. The first bonding layer 13 is positioned between the backing layer 12 and the rockwool base layer 11 along the thickness direction to bond the backing layer 12 to the rockwool base layer

11. The surface layer 14 is disposed on one side of the backing layer 12 away from the rockwool base layer 11 along the thickness direction. The second bonding layer 15 is disposed between the surface layer 14 and the backing layer 12 along the thickness direction to bond the surface layer 14 to the backing layer 12. The 90° peel strength between the surface layer 14 and the backing layer 12 ranges from 4 N/75 mm to 30 N/75 mm. The 90° peel strength herein can be used to measure the bonding effect of the backing layer 12 and the surface layer 14.

[0050] According to the composite reinforced rockwool board 10 of this invention, by configuring the backing layers 12, the surface of the rockwool base layer 11 along the thickness direction can be protected respectively, thereby increasing the strength of the surface of the board outwards along the thickness direction and the integrity of the board, preventing the rockwool base layer 11 from being damaged due to friction and bump in the process of transportation and construction, and especially reducing the rockwool debris generated by the rockwool base layer 11, which in turn helps to maintain the flat and clean state of the board and improve the service life of the board. By setting the 90° peel strength of the backing layer 12 and the surface layer 14 in the range of 4 N/75 mm to 30 N/75 mm, the stability of the connection structure between the backing layer 12 and the surface layer 14 is ensured. Further, by bonding the surface layer 14 to the outer surface of the backing layer 12, the strength of the connection structure of the surface layer can be improved, and the surface strength of the board can be further improved, which enhances the protection performance for the rockwool base layer 11. In the use state, the side with the surface layer 14 can be oriented to the outside of the building so as to further improve the thermal insulation performance and the service life of the board.

[0051] It will be appreciated that in the example shown in Fig. 1, two each of the backing layer 12 and the first bonding layer 13 may be provided. The two backing layers 12 are disposed on two outer sides of the rockwool base layer 11 along the thickness direction. That is, the rock wool base layer 11 is disposed between the two backing layers 12 along the thickness direction. Two first bonding layers 13 are each disposed between the two backing layers 12 and the rockwool base layer 11 along the thickness direction to bond the two backing layers 12 to the rockwool base layer 11. i.e., a first backing layer 12, a first bonding layer 13, the rockwool base layer 11, another first bonding layer 13, the other backing layer

12, the top layer 14, and a second bonding layer 15 are disposed sequentially in the thickness direction. [0052] In examples not shown, the backing layer 12 and the first bonding layer 13 may each be provided with only one. That is, the rock wool base layer 11, the first bonding layer 13, the backing layer 12, the top layer 14, and the second bonding layer 15 are arranged sequentially in the thickness direction.

[0053] Further, the surface layer 14 may be constructed as at least one of a metal film, a plastic film, a fiber felt and a paper. In other words, the surface layer 14 can be made of any material of the metal film, plastic film, fiber felt, paper or any combination of materials. The paper herein can also be called paper.

[0054] In an example, the surface layer 14 may comprise an aluminum foil layer, a mesh cloth layer and a kraft paper layer. The mesh cloth layer is bonded to the aluminum foil layer and the kraft paper layer by means of adhesive. That is, the surface layer 14 can at least be made of several structural layers of the aluminum foil layer, mesh cloth layer and kraft paper layer by bonding. The aluminum foil layer can be construed as one of the above metal film. The mesh cloth layer can be construed as one of the above fiber felt. The kraft paper layer can be construed as one of the above paper.

[0055] In another example, the surface layer 14 may comprise a polypropylene film layer, a mesh cloth layer and a kraft paper layer. The mesh cloth layer is bonded between the polypropylene film layer and the kraft paper layer. That is, the surface layer 14 can at least be made of several structural layers of the polypropylene film layer, mesh cloth layer and kraft paper layer by bonding. The polypropylene film layer herein can be construed as one of the above plastic film. The polypropylene film layer is a structure made of polypropylene (Polypropylene, referred to as PP).

[0056] In another example, the surface layer 14 may comprise an aluminum foil layer and a glass fiber cloth layer. The aluminum foil layer is bonded to the glass fiber cloth layer. That is, the surface layer 14 can at least be made of the aluminum foil layer and glass fiber cloth layer by bonding. The glass fiber cloth layer can be construed as one of the above fiber felt.

[0057] In still another example, the metal film can be constructed as aluminum foil.

[0058] In yet another example, the plastic film can be constructed as one of a polypropylene film, a polyethylene terephthalate film, and polyethylene film and polyvinyl chloride film. The polypropylene film herein is a structure made of polypropylene (Polypropylene, referred to as PP). The polyethylene terephthalate film is a structure made of polyethylene terephthalate (Polyethylene terephthalate, referred to as PET). Polyethylene film is a structure made of polyethylene (PE). Polyvinyl Chloride (PVC) membrane is a structure made of Polyvinyl Chloride (PVC).

[0059] In still yet another example, the fiber felt can be constructed as one of a glass fiber cloth, a mesh cloth and a non-woven cloth. [0060] In still yet another example, the paper can be constructed as a kraft paper.

[0061] In an example, the second bonding layer 15 can be constructed as a structural layer formed of water-based adhesive after curing. In the production process, the method of forming the second bonding layer 15 can be: first coating the water-based adhesive on the backing layer 12 or the surface layer 14, and then curing the adhesive by drying so as to form the second bonding layer 15 after the surface layer 14 and the backing layer 12 are bonded.

[0062] In another example, the second bonding layer 15 can be constructed as a structural layer formed of hot melting polymer material after hot melting and curing. The hot melting polymer material herein can be pre-attached to the surface layer 14, that is, the raw material of the surface layer 14 can come with the hot melting polymer material layer. The hot melting polymer material can melt and have bonding ability after heating at the corresponding temperature, so as to bond the surface layer 14 and the backing layer 12 together.

[0063] In a further example, the second adhesive layer 15 may be a structural layer pre-attached to the surface of the face layer 14 to fabricate the second adhesive layer 15 and the face layer 14 as one. The structure of the face layer 14 and the second adhesive layer 15 after attachment together may include an aluminum foil layer, a mesh fabric layer, and a polyethylene layer stacked sequentially in the thickness direction. The polyethylene layer, here, is both a plastic film on the surface of the face layer 14 and at the same time a hot-melt polymer structural layer that serves as the second bonding layer 15.

[0064] For example, the rockwool base layer 11 may have a density ranging from 40 kg/m³ to 220 kg/m³. For example, the density of the rock wool base layer 11 may be one of any of 40 kg/m³, 80 kg/m³, 120 kg/m³, 160 kg/m³, 180 kg/m³, 220 kg/m³, etc.

[0065] For example, the rockwool base layer 11 may have a thickness ranging from 15 mm to 200 mm. For example, the thickness of the rockwool base layer 11 may be one of any of the values of 15 mm, 55 mm, 95 mm , 135 mm, 175 mm, 200 mm, etc.

[0066] For example, the 90° peel strength between the backing layer 12 and the rockwool base layer 11 may range from 4 N/75 mm to 30 N/75 mm, which ensures a higher bonding strength between the backing layer 12 and the rockwool base layer 11, thereby making it more difficult for the backing layer 12 to separate from the rockwool base layer 11 and enabling the surface layer 14 to be indirectly and more reliably fixed to the rockwool base layer 11.

[0067] As shown in FIG. 5, the principle of measuring the 90° peel strength of the backing layer 12 and the rockwool base layer 11 is as follows: The backing layer 12 and the rockwool base layer 11 are at a 90° angle, and with the tension F applied at a uniform speed, the average tensile bonding strength is taken as the peel strength, to which the principle of measuring the 90° peel strength between the surface layer 14 and the backing layer 12 can refer.

[0068] Further, the backing layer 12 may be constructed as a structural layer made of at least one of a glass fiber woven fabric, a coated non-woven felt, a non-coated non-woven felt, and a mesh cloth. The backing layer 12 may also be selected from two or more composite structures of the glass fiber woven fabric, the coated non-woven felt, the non-coated non-woven felt, and a mesh cloth. The backing layer 12 may be superimposed and compounded along the thickness direction when the backing layer 12 is selected from two or more composite structures of the glass fiber woven fabric, the coated non-woven felt, the non-coated non-woven felt, and a mesh cloth.

[0069] In an example of the present invention, the backing layer 12 can be constructed as a glass fiber woven fabric. The glass fiber woven fabric herein is a knitted plain cloth with a gram weight ranging from 40g/m² to 1200g/m². The glass fiber woven fabric herein may also be a mesh cloth with a gram weight ranging from 40g/m² to 200g/m².

[0070] In another example of the present invention, the backing layer 12 can be constructed as a coated non-woven felt.

[0071] The coated non-woven felt herein may have a gram weight ranging from 100g/m²to 400g/m². For example, the gram weight of the coated non-woven felt may be one of any values such as 100g/m², 200g/m², 300g/m², 400g/m², etc.

[0072] The coated non-woven felt may have a thickness ranging from 0.1 mm to 1.5 mm. For example, the thickness of the coated non-woven felt may be one of any values such as 0.1 mm, 0.5 mm, 1.0 mm, 1.5 mm, etc.

[0073] The coated non-woven felt may have a tensile strength ranging from 100 N/50 mm to 1000 N/50 mm. For example, the tensile strength of the coated non-woven felt may be one of any values such as 100 N/50 mm, 300 N/50 mm, 500 N/50 mm, 700 N/50 mm, 1000 N/50 mm, etc.

[0074] The coated non-woven felt may have a calorific value ranging from 1 MJ/kg to 10 MJ/kg. For example, the calorific value of the coated non-woven felt may be one of any values such as 1 MJ/kg, 3 MJ/kg, 5 MJ/kg, 7 MJ/kg, 10 MJ/kg, etc.

[0075] The coated non-woven felt may have an air permeability under 100 Pa pressure ranging from 100 L/m².s to 10000 L/m².s. For example, the air permeability of the coated non-woven felt under 100 Pa pressure may be one of any values such as 100 L/m².s, 300 L/m².s, 500 L/m².s, 700 L/m².s, 10000 L/m².s, etc.

[0076] The coated non-woven felt after aging may have a strength retention rate ranging from 50% to 100%. For example, the strength retention rate of the coated non-woven felt after aging may be one of any values such as 50%, 60%, 70%, 80%, 90%, 100%, etc.

[0077] In the example of this invention of constructing the backing layer 12 as the coated non-woven felt, the coating of the coated non-woven felt may be made of a resin and a filler, wherein the resin may be an acrylic resin, and the filler may be made of calcium carbonate, cement, sand and a color master.

[0078] Further, the coated non-woven felt can be constructed as a coated non-woven glass fiber felt.

[0079] In yet another example of the invention, the backing layer 12 can be constructed as a non-coated non-woven felt.

[0080] The non-coated non-woven felt herein may have a gram weight ranging from 30 g/m² to 100 g/m². For example, the gram weight of the non-coated non-woven felt may be one of any values such as 30 g/m², 50 g/m², 70 g/m², 90 g/m², 100 g/m², etc.

[0081] The non-coated non-woven felt may have a thickness ranging from 0.1 mm to 1.0 mm. For example, the thickness of the non-coated non-woven felt may be one of any values such as 0.1 mm, 0.5 mm, 0.8 mm, 1.0 mm, etc.

[0082] The non-coated non-woven felt may have a tensile strength ranging from 100 N/50 mm to 1000 N/50 mm. For example, the tensile strength of the non-coated non-woven felt may be one of any values such as 100 N/50 mm, 300 N/50 mm, 500 N/50 mm, 700 N/50 mm, 1000 N/50 mm, etc.

[0083] The non-coated non-woven felt may have a calorific value ranging from 1 MJ/kg to 10 MJ/kg. For example, the calorific value of the non-coated non-woven felt may be one of any values such as 1 MJ/kg, 3 MJ/kg, 5 MJ/kg, 7 MJ/kg, 10 MJ/kg, etc.

[0084] The non-coated non-woven felt after aging may have a strength retention rate ranging from 50% to 100%. For example, the strength retention rate of the non-coated non-woven felt after aging may be one of any values such as 50%, 60%, 70%, 80%, 90%, 100%, etc.

[0085] Further, the non-coated non-woven felt can be constructed as a non-coated non-woven glass fiber felt.

[0086] In the example of the invention of constructing the backing layer 12 as the non-coated non-woven felt, the non-coated non-woven felt may be made of a glass fiber and a urea-formaldehyde resin.

[0087] In the example of the invention of constructing the backing layer 12 as the non-coated non-woven felt, the non-coated non-woven felt may also be made of a glass fiber and an acrylic resin.

[0088] The double-sided composite reinforced rockwool board 10 according to the present invention may have a density ranging from 60 kg/m³ to 220 kg/m³. For example, the density of the double-sided composite reinforced rockwool board 10 herein can be one of any values such as 60 kg/m³, 80 kg/m³, 120 kg/m³, 180 kg/m³, 220 kg/m³, etc. [0089] In an example, the resin bonding the rockwool base layer 11 and either of the two backing layers 12 may have a weight ranging from 1 g/m² to 100 g/m².

[0090] Further, the weight of the resin bonding the rockwool base layer 11 and either of the two backing layers 12 may range from not less than 5g/m² to less than 10g/m². The weight of the resin bonding the rockwool base layer 11 and either of the two backing layers 12 may also range from greater than 10 g/m² to less than 20 g/m².

[0091] In another example, the resin bonding the rockwool base layer 11 and the two backing layers 12 may have a total weight ranging from 1 g/m² to 100 g/m².

[0092] Further, the total weight of the resin bonding the rockwool base layer 11 and the two backing layers 12 may range from not less than 5 g/m² to less than 10 g/m². The total weight of the resin bonding the rockwool base layer 11 and the two backing layers 12 may also range from greater than 10 g/m² to less than 20 g/m².

[0093] For example, the first bonding layer 13 may be constructed as a structural layer made of at least one of a phenolic resin, an epoxy resin, a polyurethane, an acrylic resin, a sugar-based resin, a urea-formaldehyde resin, and a polyvinyl alcohol resin after curing. The first bonding layer 13 herein is used to bond the backing layer 12 to the rockwool base layer 11. The binder used in the production of the rockwool base layer 11 may also be the same material or component as the first bonding layer 13.

[0094] The rockwool base layer 11 according to the present invention may be constructed as a structure pressed by a pleating process, with a pleating ratio ranging from 1.0 to 4.0.

[0095] Optionally, the rockwool base layer 11 has a resin. That is, the rockwool base layer 11 itself contains a resin. A resin content of the rockwool base layer 11 may range from 1.0% to 5.0%.

[0096] With reference to FIGS. 1 to 5, the present invention further provides a production equipment 200 for the composite reinforced rockwool board 10. The production equipment 200 is used to produce the composite reinforced rockwool board 10. The production equipment 200 may include a curing furnace 210, a transfer unit 220, a first pre-composite unit 230 and a post-composite unit 250. The curing furnace 210 is used to provide a high temperature environment for the purpose of curing the glue. The transfer unit 220 is disposed extending along a conveying direction DI and passing through the curing furnace 210. The transfer unit 220 is used to convey the rockwool matrix 30. The rockwool matrix 30 herein can be pressed by the pleating process. The first pre-composite unit 230 is disposed on an upstream side of the curing furnace 210 along the conveying direction DI and configured to glue the backing layer 12 and convey the backing layerl2 to the transfer unit 220 such that the backing layer 12 is attached to the rockwool matrix 30. The post composite unit 250 is disposed on a downstream side of the curing furnace 210 along the conveying direction DI and configured to convey the surface layer 14 to the transfer unit 220 such that the surface layer 14 is attached to an upper portion of the backing layer 12.

[0097] According to the production equipment 200 for the composite reinforced rockwool board 10 of the invention, the rockwool matrix 30 is transported through the transfer unit 220; the backing layer 12 is sized and transported to the transfer unit 220 by the first pre-composite unit 230, such that the backing layer 12 can be attached to the rockwool matrix 30. The bonded rockwool matrix 30 and backing layer 12 are then transported and passed through the curing furnace 210 by means of the transfer unit 220 to dry and cure the glue of the rockwool matrix 30 and backing layer 12 through the curing furnace 210. After that, the surface layer 14 is transported to the transfer unit 220 by the post-composite unit 250 such that the surface layer 14 can be attached to the upper portion of the backing layer 12. This can realize online composite of the rockwool matrix 30, backing layer 12 and surface layer 14, which is conducive to improving the production efficiency as well as product consistency and yield.

[0098] With reference to FIG. 2 to FIG. 4, for example, the transfer unit 220 may be constructed into a conveyer belt, a conveyer chain plate, and a conveyer drum, and the like. Different parts of the transfer unit 220 along the conveying direction DI may be constructed in the same form or in different forms.

[0099] With reference to FIGS. 2 to 3, for example, the first pre-composite unit 230 is arranged corresponding to an upper portion of the transfer unit 220, and the post-composite unit 250 is arranged corresponding to an upper portion of the transfer unit 220. That is, in the process of conveying the rockwool matrix 30 by the transfer unit 220, the backing layer 12 is first attached to the upper portion of the rockwool matrix 30, and then the surface layer 14 is attached to the upper portion of the combination of the rockwool matrix 30 and the backing layer 12. In other words, a layer of backing layer 12 is first attached to the upper portion of the rockwool base layer 11 composed of the rockwool matrix 30, and then a layer of surface layer 14 is attached to the upper part of the backing layer 12. By arranging both the first pre-composite unit 230 and the post composite unit 250 corresponding to the upper portion of the transfer unit 220, it can facilitate the backing layer 12 and the surface layer 14 to reach the transfer unit 220 using the dead weight.

[00100] With reference to FIGS. 2 to 4, for example, the post-composite unit 250 may include a post-unwinding assembly 260 for uncoiling a rolled surface layer 14. The post-unwinding assembly 260 herein can support the roll material and adapt to the requirements for uncoiling of the roll material.

[00101] With reference to FIG. 4, further, the post-unwinding assembly 260 may include a post-unwinding support 261 provided with a bearing seat for supporting a mandrel of the roll material so as to support the end of the mandrel of the roll material. [00102] In the illustrated example, the rear unwind assembly 260 may be constructed as a unwind trolley. The unwind trolley may be provided such that its position in the conveying direction can be adjusted.

[00103] With reference to FIGS. 2 to 4, in an example of the post-composite unit 250, the post-composite unit 250 may further comprise a post-gluing assembly 270 for applying a water-based adhesive to an unwound surface layer 14. When the surface layer 14 and backing layer 12 need to be bonded by the water-based adhesive, the surface layer 14 can be coated by the post-gluing assembly 270.

[00104] The post-gluing assembly 270 herein may include a post-gluing groove 272, a first post-gluing roller 273 and a second post-gluing roller 274. The second post-gluing roller 274 is located above the first post-gluing roller 273 and is in contact with each other. The outside of at least one of the first post-gluing roller 273 and the second post-gluing roller 274 is constructed into a flexible structure. The post-gluing groove 272 is located below the first post-gluing roller 273. The post-gluing groove 272 is used to hold the water-based adhesive. The second post-gluing roller 274 is used for contacting the surface to be bonded of the surface layer 14 to adhere the adhesive solution to the surface to be bonded of the surface layer 14. During the operation of the post-gluing assembly 270, the first post-gluing roller 273 rotates and drives the second post-gluing roller 274 to rotate, and in this process, the first post-gluing roller 273 adheres the adhesive solution from the post-gluing groove 272 and adheres to the second post-gluing roller 274, which then coats the adhesive solution to the surface layer 14.

[00105] Optionally, the position of the first rear rubber roller 273 and the second rear rubber roller 274 in the height direction with respect to the rear rubber groove 272 may be set to be adjustable. The first post-glue roller 273 may also be individually set to have an adjustable position in the height direction to adjust the depth of immersion within the post-glue groove 272 as desired.

[00106] In other examples not shown, the post-glueing assembly may include a glue trough and a glue roller. A portion of the glue roller is disposed in the glue groove to be adapted to adhere to a binder disposed within the glue groove. Other portions of the glue roller may be used to contact the top layer to be glued to apply the glue to the top layer.

[00107] With further reference to FIG. 4, the post-gluing assembly 270 may also include a first guide roller 275, a second guide roller 276, a third guide roller 277, and a fourth guide roller 278. The first guide roller 275 and the second guide roller 276 both are located under the post-gluing groove 272. The first guide roller 275 and the second guide roller 276 are located on both sides of the post-gluing groove 272 along the conveying direction DI. The first guide roller 275 is closer to the post-unwinding assembly 260 in the conveying direction DI than the second guide roller 276. The third guide roller 277 and the fourth guide roller 278 are at least in part located above the second post-gluing roller 274. The third guide roller 277 and the fourth guide roller 278 are located on both sides of the second post-gluing roller 274 along the conveying direction DI, and the third guide roller 277 is closer to the post-unwinding assembly 260 than the fourth guide roller 278. The first guide roller 275, the second guide roller 276, the third guide roller 277 and the fourth guide roller 278 are used to contact the surface layer 14 and guide the movement direction of the surface layer 14.

[00108] When the surface layer 14 to be applied with water-based adhesive passes through the post-gluing assembly 270, the surface layer 14 successively bypasses the lower portion of the first guide roller 275, the lower portion of the second guide roller 276, the second post-gluing roller 274, the upper portion of the third guide roller 277, and the upper potion of the fourth guide roller 278.

[00109] In a further example not shown, the post-unwinding assembly 260 can be set to at least two groups. At least two sets of the post-unwinding assembly 260 can be arranged in the width direction such that the uncoiling can be synchronized through each set of the post-unwinding assembly 260 to form the backing layer 12 on the upper portion of the rockwool base layer 11. At least two groups of the post-unwinding assembly 260 can also be arranged in sequence along the conveying direction DI. When one of two groups of the post-unwinding assembly 260 is uncoiled, the remaining post-unwinding assembly 260 can be used as backup. At least two sets of the post-unwinding assembly 260 can also be arranged in the width direction and the conveying direction DI, respectively.

[00110] With reference to FIG. 3 and FIG. 4, in another example of the post-composite unit 250, if the surface layer 14 is constructed with a hot melting polymer material layer, the hot melting polymer material layer can be bonded by melting under the state of heating. To this end, the surface layer 14 can be guided by the third guide roller 277 or the fourth guide roller 278 of the gluing assembly in the above example. In particular, when the surface layer 14 having the hot melting polymer material passes through the post-gluing assembly 270, the surface layer 14 is transported successively around the upper part of the third guide roller 277 and the upper part of the fourth guide roller 278, thereby separating the surface layer 14 from the second post-gluing roller 274. Thus, the post-gluing assembly 270 is compatible with the delivery of different surface layers 14.

[00111] With reference to FIGS. 2 to 4, moreover, the production equipment 200 may further include a heating roller 280 disposed downstream of the post-unwinding assembly 260 along a movement direction of the post-unwinding assembly 260 releasing the surface layer 14 and close to an upper portion of the transfer unit 220. The heating roller 280 is suitable for pressing against a surface of the surface layer 14 away from the backing layer 12 to apply a force on the surface layer 14 against the backing layer 12 and heat the surface layer [00112] With reference to FIGS. 2 to 4, if the water-based adhesive has been applied to the surface layer 14, the water-based adhesive located between the surface layer 14 and the backing layer 12 can be heated by the heating roller 280 when the surface layer 14 passes through the heating roller 280 to promote the curing of the water-based adhesive, thus achieving the bonding of the surface layer 14 to the backing layer 12.

[00113] With reference to FIGS. 3 to 4, if the surface layer 14 is a structure with the hot melting polymer material, when the surface layer 14 passes through the heating roller 280, the hot melting polymer material will melt under the heat provided by the heating roller 280 and become adhesive, so as to achieve the bonding of the surface layer 14 to the backing layer 12.

[00114] For example, the heating roller can use an electric heating roller, an oil heating roller, an electromagnetic heating roller, and other heating rollers.

[00115] With reference to FIG. 4, moreover, the production equipment 200 may also include a membrane guide assembly 290 located between the post-gluing assembly 270 and the heating roller 280 along the conveying direction DI. The membrane guide assembly 290 includes a support member and a deviation correction member. The support member is suitable for supporting the surface layer 14. The deviation correction member is suitable for correcting the offset of the position of the surface layer 14 along the width direction.

[00116] Continuing with reference to FIG. 4, for example, the membrane guide assembly 290 can be configured to be able to adjust its position in the height direction D2. The width direction herein can be understood as a horizontal direction perpendicular to the conveying direction DI.

[00117] The membrane guide assembly 290 herein may adopt a transport structure used in the relevant technology to achieve the transport of a film-like material.

[00118] Referring again to FIG. 4, moreover, the production equipment 200 may also include a support member 310 disposed between the post-gluing assembly 270 and the heating roller 280 along the conveying direction DI. The support member 310 is adapted to support the surface layer 14 to prevent the surface layer 14 from sinking during transportation, thereby protecting the surface layer 14.

[00119] For example, the support member 310 may be constructed as a board member.

[00120] Referring again to FIG. 4, moreover, the production equipment 200 may also include a lifting assembly 300. The lifting assembly 300 is connected to the heating roller 280 to adjust the position of the heating roller 280 along the height direction D2 according to the thickness of the board to be made.

[00121] Referring again to FIG. 4, for example, the lifting assembly 300 may include a lifting support 301, a drive shaft 302, a transmission member 303, a lead screw 304, and a motor 305. The heating roller 280 is rotationally mounted on the lifting support 301 about its own shaft. The lifting support 301 is movably mounted on the rack along the height direction D2. The lead screw 304 is disposed extending along the height direction D2 and screwed to the lifting support 301. The drive shaft 302 is arranged horizontally and connected to the transmission member 303. The drive shaft 302 is also connected to the output shaft of the motor 305. The transmission member 303 may include two bevel gears engaged with each other. One of the two bevel gears is connected to the drive shaft 302. The other of the two bevel gears is connected to the lead screw 304. When the motor 305 is started, the motor 305 can drive the lifting support 301 to perform the lifting movement along the height direction D2 when it is rotated in different directions.

[00122] In examples not shown, the lifting bracket may also be driven by other electric devices, hydraulic actuators, and other devices for the purpose of lifting.

[00123] With reference to FIG. 2 to FIG. 4. moreover, the production equipment 200 may also include a second pre-composite unit 240 arranged corresponding to a lower portion of the transfer unit 220. The second pre-composite unit 240 is also disposed on an upstream side of the curing furnace 210. The first pre-composite unit 250 is used for sizing the other backing layer 12 and conveying the other backing layer 12 to the lower portion of the transfer unit 220 so that the other backing layer 12 is attached to the lower portion of the rockwool matrix 30.

[00124] The first pre-composite unit 230 and the second pre-composite unit 240 according to the present invention can both include a pre-unwinding assembly and a pre-gluing assembly. The pre-unwinding assembly is used to uncoil a rolled backing layer 12. The pre-gluing assembly is located between the pre-unwinding assembly and the transfer unit 220. The pre-gluing assembly is used to apply a binder to the unwound backing layer 12.

[00125] For example, the pre-unwinding assembly may be implemented with reference to the above post-unwinding assembly 260 or the unwinding unit in the related technology, provided that the uncoiling of the roll material can be achieved.

[00126] In a further example not shown, the pre-unwinding assembly can be set to at least two groups. At least two sets of the pre-unwinding assembly can be arranged in the width direction such that the uncoiling can be synchronized through each set of the pre-unwinding assembly to form the backing layer 12 by splicing on the upper portion of the rockwool base layer 11. At least two groups of the pre-unwinding assembly can also be arranged in sequence along the conveying direction DI. When one of the at least two groups of the pre-unwinding assembly is uncoiled, the remaining pre-unwinding assembly can be used as backup. At least two sets of the pre-unwinding assembly can also be arranged in the width direction and the conveying direction DI, respectively.

[00127] The pre-gluing assembly may be implemented with reference to the above post-gluing assembly 270 or the gluing unit in the related technology, provided that the gluing of the backing layer 12 can be achieved.

[00128] Unless otherwise defined, the technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the technical field of the present invention. The terms used herein are only for describing specific implementation purposes, and are not intended to limit the present invention. Terms such as "disposing" and the like appearing herein can mean that one component is directly attached to another component, or that one component is attached to another component through an intermediate component. A feature described in one embodiment herein can be applied to another embodiment alone or in combination with other features, unless the feature is not applicable in the other embodiment or otherwise stated.

[00129] The present invention has been described through the above-mentioned embodiments, but it should be understood that the above-mentioned embodiments are only for the purpose of illustration and description, and are not intended to limit the present invention to the scope of the described embodiments. Those skilled in the art can understand that more variations and modifications can be made according to the teachings of the present invention, and these variations and modifications fall within the protection scope claimed by the present invention.

Claims

WHAT IS CLAIMED IS:

1. A composite reinforced rockwool board, comprising: a rockwool base layer; a backing layer disposed on the outer side of the rockwool base layer along a thickness direction; a first bonding layer disposed between the backing layer and the rockwool base layer along the thickness direction to bond the backing layer to the rockwool base layer; a surface layer disposed on one side of the backing layer away from the rockwool base layer along the thickness direction; and a second bonding layer disposed between the surface layer and the backing layer along the thickness direction to bond the surface layer to the backing layer, with a 90° peel strength between the surface layer and the backing layer ranging from 4 N/75 mm to 30N/75 mm.

2. The composite reinforced rockwool board of claim 1, wherein the surface layer is constructed as at least one of a metal film, a plastic film, a fiber felt and a paper.

3. The composite reinforced rockwool board of claim 2, wherein the surface layer comprises an aluminum foil layer, a mesh cloth layer and a kraft paper layer, and the mesh cloth layer is bonded to the aluminum foil layer and the kraft paper layer.

4. The composite reinforced rockwool board of claim 2, wherein the surface layer comprises a polypropylene film layer, a mesh cloth layer and a kraft paper layer, and the mesh cloth layer is bonded between the polypropylene film layer and the kraft paper layer.

5. The composite reinforced rockwool board of claim 2, wherein the surface layer comprises an aluminum foil layer and a glass fiber cloth layer, and the aluminum foil layer is bonded to the glass fiber cloth layer.

6. The composite reinforced rockwool board of claim 2, wherein the metal film is constructed as aluminum foil.

7. The composite reinforced rockwool board of claim 2, wherein the plastic film is constructed as one of a polypropylene film , a polyethylene terephthalate film, polyethylene film and polyvinyl chloride film.

8. The composite reinforced rockwool board of claim 2, wherein the fiber felt is constructed as one of a glass fiber cloth, a mesh cloth and a non-woven cloth.

9. The composite reinforced rockwool board of claim 2, wherein the paper is constructed as a kraft paper.

10. The composite reinforced rockwool board of any of claims 1 to 9, wherein the second bonding layer is constructed as a structural layer formed of a water-based binder after curing.

11. The composite reinforced rockwool board of any of claims 1 to 9, wherein the second bonding layer is constructed as a structural layer formed of hot melting polymer material after hot melting and curing.

12. The composite reinforced rockwool board of any of claims 1 to 9, wherein the rockwool base layer has a density ranging from 40 kg/m³ to 220 kg/m³; and/or the rockwool base layer has a thickness ranging from 15 mm to 200 mm.

13. The composite reinforced rockwool board of any of claims 1 to 9, wherein 90° peel strength between the backing layer and the rockwool base layer ranges from 4N/75 mm to 30N/75 mm.

14. The composite reinforced rockwool board of claim 1, wherein the backing layer is constructed as at least one of a glass fiber woven cloth, a coated non-woven felt, a non-coated non-woven felt, and a mesh cloth.

15. The composite reinforced rockwool board of claim 1, wherein the first bonding layer is constructed as a structural layer formed of at least one of a phenolic resin, an epoxy resin, a polyurethane, an acrylic resin, a sugar-based resin, a urea-formaldehyde resin, and a polyvinyl alcohol resin after curing.

16. A composite reinforced rockwool board production equipment for producing the composite reinforced rockwool board of any of claims 1 to 15, wherein the production equipment comprises: a curing furnace; a transfer unit for conveying rockwool matrix disposed extending along a conveying direction and passing through the curing furnace; a first pre-composite unit disposed on an upstream side of the curing furnace along the conveying direction and configured to glue the backing layer and convey the backing layer to the transfer unit such that the backing layer is attached to the rockwool matrix; and a post-composite unit disposed on a downstream side of the curing furnace along the conveying direction and configured to glue the surface layer and convey the surface layer to the transfer unit such that the surface layer is attached to an upper portion of the backing layer.

17. The composite reinforced rockwool board production equipment of claim 16, wherein the first pre-composite unit is arranged corresponding to an upper portion of the transfer unit, and the post-composite unit is arranged corresponding to an upper portion of the transfer unit.

18. The composite reinforced rockwool board production equipment of claim 17, wherein the post-composite unit comprises a post-unwinding assembly for uncoiling a rolled surface layer.

19. The composite reinforced rockwool board production equipment of claim 18, wherein the post-composite unit further comprises a post-gluing assembly for applying a water-based binder to the surface layer for uncoiling.

20. The composite reinforced rockwool board production equipment of claim 18, wherein the production equipment further comprises a heating roller disposed downstream of the post-unwinding assembly along a movement direction of the post-unwinding assembly releasing the surface layer and close to an upper portion of the transfer unit, wherein the heating roller is suitable for pressing against a surface of the surface layer away from the backing layer to apply a force on the surface layer against the backing layer and heat the surface layer.

21. The composite reinforced rockwool board production equipment of claim 19, wherein the production equipment further comprises a heating roller disposed downstream of the post-unwinding assembly along a movement direction of the post-unwinding assembly releasing the surface layer and close to an upper portion of the transfer unit, wherein the heating roller is suitable for pressing against a surface of the surface layer away from the backing layer to apply a force on the surface layer against the backing layer and heat the surface layer.

22. The composite reinforced rockwool board production equipment of claim 21, wherein the production equipment further comprises a membrane guide assembly disposed between the post-gluing assembly and the heating roller along the conveying direction and adapted to support the surface layer and prevent the surface layer from deviating in a width direction, which is a horizontal direction perpendicular to the conveying direction.

23. The composite reinforced rockwool board production equipment of claim 21, wherein the production equipment further comprises a support member disposed between the post-gluing assembly and the heating roller along the conveying direction and adapted to support the surface layer.

24. The composite reinforced rockwool board production equipment of claim 21, wherein the production equipment further comprises a lifting assembly connected to the heating roller and adapted to adjust a position of the heating roller along a height direction.

25. The composite reinforced rockwool board production equipment of claim 24, wherein the lifting assembly comprises: a lifting support movably arranged along the height direction; a lead screw disposed extending along the height direction and screwed to the lifting support; a drive shaft arranged rotationally and intersected with the lead screw; a transmission member connected to the drive shaft and the lead screw to transmit power between the drive shaft and the lead screw; and a motor whose output shaft is connected to the drive shaft to drive the drive shaft to rotate.

26. The composite reinforced rockwool board production equipment of any of claims 17 to 19, wherein the production equipment further comprises a second pre-composite unit disposed an upstream side of the curing furnace along the conveying direction and corresponding to a lower portion of the rockwool matrix on the transfer unit, wherein the second pre-composite unit is configured to size the backing layer below the rockwool matrix and convey the backing layer to a lower portion of the rockwool matrix such that the backing layer is attached to the lower portion of the rockwool matrix.

27. The composite reinforced rockwool board production equipment of claim 26, wherein the first pre-composite unit and the second pre-composite unit both comprise: a pre-unwinding assembly configured to uncoil a rolled backing layer; and a pre-gluing assembly configured to apply a binder to the backing layer for uncoiling.