• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    PROCESS FOR THE PRODUCTION OF A LAMINATE SHEET. The present invention relates to a process for the production of rigid and light laminate materials. At least one sheet of textured blade that has high pointed structures is forced against a softer flat blade in order to embed the structures in it. The pointed structures (20) raised from grooves driven into the surface of the sheet material by means of a series of teeth guided in a knife-like element. The pointed structures (20) can pierce the softer blade in such a way that the protruding points can be curved or bent to prevent its easy removal. Two of these textured blades can be used to press and pierce the smoothest blade and are coded by each other. In this way, a rigid and lightweight laminate is created.
    公开号:BR112014031445B1
    申请号:R112014031445-4
    申请日:2013-05-23
    公开日:2021-02-02
    发明作者:Ray Arbesman；Nghi Pham；Winston MacKelvie
    申请人:Nugripmetal S.A.R.L.；
    IPC主号:
    专利说明:

    Field of the Invention
    [001] The present invention relates to laminated materials and more particularly, it relates to a process for laminating by creating layers of sheet or pleats to produce an improved structural material. Background of the Invention
    [002] There is an increasing need for lighter, more rigid and economical structural materials, preferably with all three of these qualities for the production of better products. Summary of the Invention
    [003] A laminate is made by combining at least one harder layer (layer) with at least one softer blade. In one embodiment, two harder outer blades are used to press a softer core or center blade. The stiffer blade (s) is preferably made of a ductile material such as steel sheet. Each harder blade has at least one surface of the textured face, so that a myriad of perforating, pointed and nail-like structures rise from it. Preferably, the textured sheet is not perforated. The core or center blade is preferably made of a softer and more perforable material such as plastic sheet. One or more of these textured blades are forced against at least one perforating blade so that they are thereby perforated and preferably, penetrated in such a way that the pointed ends of the perforating structures are corroded against each other, thereby locking the three blades together.
    [004] According to a first aspect of the invention, a process is provided for the production of a laminate sheet. At least one face of a sheet of a relatively hard first material is provided with a textured surface that has a plurality of elevated and generally pointed structures. The textured face of the first material is then brought into contact with a face of a softer second material. The two faces are forced to come together so that at least some of the pointed structures enter the second material to form a laminate sheet.
    [005] Various materials can be used. In a preferred embodiment, the first material has a Brinell hardness of more than about 80 and the second material has a Brinell hardness of less than about 30. Preferably, the first material is a metal (e.g., steel). Preferably, the second material is a plastic, resin, polymer, foam, rubber, wood or hybrid material.
    [006] In one embodiment, the second material is a curable material, in which case, the "forcing" step includes applying the second material in a partially cured state and then allowing the second material to be cured.
    [007] The first and second materials can be forced to come together by passing the laminate sheet (or portions of it) between rollers. Preferably, the forcing step causes at least the tips of the pointed structures to pierce the second material, such that the tips protrude on a second face of the second material. The protruding ends may be deformed and guided over, to or within the second face of the second material (for example, by rolling over the ends with a roller, or by pressing the ends down through a second sheet of the first material). The tips can also (but do not need to) interact with each other (deformed by contact or interconnected in some modalities).
    [008] The process may involve heating one or both of the first material and the second material before the materials are forced to come together. The materials can be at least partially assembled together in a heated state and then cooled. The second material can be heated in a softened state prior to partial assembly of the second material on the first material in the softened state, and the second material can then be left to cool and at least partially harden before the materials are also forced to form. laminate sheet.
    [009] The structures can have a hook shape. The structures can be pre-folded into a hook shape.
    [0010] According to a second aspect of the invention, a continuous process for the production of laminate sheets is provided. A supply of sheets of a relatively hard first material with a textured surface that has a plurality of elevated and generally pointed structures is provided from a continuous roll. The textured face of the first material is brought into contact with a face of a softer second material. The two faces are then forced to come together in such a way that at least some of the pointed structures enter the second material to form a laminate sheet.
    [0011] The second material is preferably continuously disposed in the first material and the two materials are forced to join downstream from the respective material supplies. Preferably, the second material is continuously rolled over the first material. The first material can also be cut before the second material is applied (or pre-cut pieces can be provided continuously for lamination - for example, from a deposit). Alternatively, the laminate sheet can be cut to length after the forcing step.
    [0012] A laminate sheet formed through any of the above processes is also provided.
    [0013] According to a third aspect of the invention, a laminate sheet is provided. A relatively hard first material with a textured surface that has a plurality of elevated and generally pointed structures is coupled to a second softer material, such that at least some of the pointed structures of the first material project into the second material.
    [0014] At least some of the pointed structures can extend completely through the second material. At least some of the points of the pointed structures can be turned over, to or inside the second material, in order to keep the first and second materials together.
    [0015] According to a fourth aspect of the invention, a multilayer laminate sheet is provided. At least one double-sided sheet forms the core of the laminate. The sheet is made of a relatively hard first material and has a textured surface on both sides of the sheet. The textured surface has a plurality of elevated and generally pointed structures. The outer layers of a second softer material are arranged on both sides of the two-sided sheet, the second material being coupled to the first material in such a way that at least some of the pointed structures of the first material project into the second material.
    [0016] The multilayer laminate sheet may also include boundary layers of single-sided sheets, arranged respectively outside each of the outer layers. Each boundary layer has a single side, so that it has a plurality of elevated and generally pointed structures on one of its faces (the opposite face is flat). The structures on the face are arranged to extend into at least a portion of their corresponding outer layer. (It will be understood that laminates with greater complexity can also be provided using a common structure - first boundary layer, core with one or more double-sided textured sheets, each surrounded on both sides with softer material, the second boundary layer ).
    [0017] In a variant, at least one outer layer has at least one recess to allow access to the pointed structures. In another variant, an outer layer has at least a relatively thinner area to allow access to the pointed structures. Brief Description of Drawings
    [0018] Figure 1 shows a continuous process for the production of a laminated sheet locked from three supply coils, the two outer blades having perforating structures and the central blade being made of a softer perforated material. The three blades are forced and locked together between pressure rollers, which also cause the perforating structures to turn against the opposite outer blade. Heaters and / or coolers are shown, which can be used to change the material's hardness and thus its ability to be perforated.
    [0019] Figure 2 shows a mode where two series of pressure rollers are used (for example, when the core blade is too hard to be drilled at normal temperatures or too thick to be drilled). The first rollers begin lamination and the second series of rollers completely forces the blades together.
    [0020] Figure 3 shows a detail of the textured blade sheet with perforating structures that have a tapered cross section that ends at a pointed point, occupying the surface.
    [0021] Figure 3a shows a detail of a variation that uses structures with hook (for example, for the embedding in a fluid core material such as cement or resin).
    [0022] Figure 3b shows how the piercing structures can be bent to form barbed hooks.
    [0023] Figure 4 shows the same modality where the structures had pierced the adjacent blade and where the pointed points are above its surface.
    [0024] Figure 5 shows two of these perforating blades perforating the softest core blade and where the ends were folded in the process.
    [0025] Figure 6 shows a modality of a perforating blade with both sides textured.
    [0026] Figure 7 shows other modalities of laminate with five layers where the two outer blades have unique textured faces and the central textured blade has both textured faces and where all three textured faces had perforated the adjacent blade and its pointed ends were folded.
    [0027] Figure 8 shows a detail of the folding where the tips are sequentially rolled to the final folded position on the face of the pierceable blade.
    [0028] Figure 9 shows a detail of a single perforating structure embedded mainly in a core sheet softened by heat treatment, which can also be too thick to pierce.
    [0029] Figure 10 shows the same modality where the core blade was cooled again to harden and the lamination was completed by an additional force that causes an additional slight entry of the structure, by means of which a compression region is created on the perforating structure to keep it in place.
    [0030] Figure 11 shows another modality where the core material is the textured, perforating and harder blade on both sides and the outer blades are perforable and forced against the harder core.
    [0031] Figure 12 shows how a blade that is too thick can have the pointed structures bent by providing a recess within the blade for a perforator.
    [0032] Figure 13 shows small enlarged portions of the textured material. On the right, the material is straight and the perforating structures are generally parallel to the surface at a right angle. On the left, there is the same portion of material that was folded to show how the piercing tips must necessarily become non-parallel or converging, approaching each other. However, if the structures have pierced a solid blade (not shown), the ends will thus be locked in position and will not be able to move relative to each other. This provides a high degree of hardness to the laminate. Detailed Description of the Invention
    [0033] In the following description, the word "fold" (folding, folding, folded) is used to describe the act of bending the exposed end of a pin or nail that has pierced two or more layers and extends from them . Folding is a common practice in the timber construction trade. Bending is analogous to riveting in metallurgy or any other deformation of a structure to prevent its easy removal. The purpose of folding is to provide greater cohesion between the two layers of laminate which are thereby joined.
    [0034] The term "pointed structure" or "pointed structures" is used here as a general term to describe any type of structure in the form of a pin or nail (or structure with hook or filament) elevated over the surface of a material (for inlay or perforation). "Perforating structure" is a modality where the structure is formed to perforate a softer material in the lamination process.
    [0035] In the present invention, pointed structures (for example, perforating) were raised from the surface of a material with a harder blade. Preferably, they can pierce a softer adjacent blade and if they are longer than the thickness of the soft blade, they can protrude. The protruding ends can be curved or bent to create the 'locked laminate' embodiment of the present invention. This perforation and bending cause the unexpected benefits of extraordinary hardness for the resulting laminate.
    [0036] Figure 1 shows a process for the production of a continuous locked laminate material. Coil 1 provides the first blade 1a of the softest perforating material, such as polyethylene, which will become the core blade. Reels 2 and 2a provide the second outer blade 3b and the third outer blade 3c of the toughest material, each having a textured face 3a with perforating structures 20. The three layers of blades are arranged between the pressure rollers 4, 4a. Under pressure of the rollers 4, 4a, the perforating structures of the two outer blades 3b, 3c penetrate the core blade 1a and are bent by the opposite outer blade, continuously locking the three blades together, which can then be cut into individual sheets 6 of laminate locked. Alternatively, laminate 5 can be collected as a bulk product in a collection drum (not shown) (thus, the process can be a reel-to-reel process). The bulk product can be additionally cut or shaped for specific applications, which includes cut-to-size applications in a workplace.
    [0037] Rollers 4, 4a can press the entire width of the interleaved material or only in localized areas (for example, at the edges).
    [0038] If the blade 1a is too hard to be readily perforated and / or too thick for the perforating structures 20 to extend completely through it, heaters 10 can be used to soften the material. Chillers 11 can then be used to cool laminate strip 5 before it is cut into laminate sheets 6.
    [0039] In another embodiment, a sheet of hard core sheet 1b, such as polycarbonate, shown in figure 2, can be similarly laminated between the textured outer sheet as described above, however, with the variation comprising using heaters 10 to enable a partial perforation leaving a small contact gap of about 5% of the height of the structure between each blade after the passage of the first rollers 4c, 4d. The chillers 11 then return the blade 1a to a tougher state and after that, the second rollers 4, 4a complete the drilling and come into full contact. In this way, the perforating structures are forced, at a short distance, into the core blade too hard or too thick over which a region of considerable compressive stress is created on each perforating structure and which results in an unexpected holding force . Since these structures naturally have a tapered cross section, a secondary "taper-fit" retention (well known in the mechanical field) is obtained by adding more retentive force. All of this results in an exceptionally rigid and low-cost laminate suitable for a wide range of uses. The sheets can be cut into smaller pieces of laminate 6a.
    [0040] In figure 3, the textured face 3a and the flat face 3 of the harder outer blade 3b, 3c are shown, which can be made of the same or different materials, such as steel-steel or steel-aluminum. The perforating structures 20 have pointed and perforating points 20a. In figure 4, the tips 20a are shown perforating the blade 1a and extending over it. Figure 3a shows that the structures can be hooked. For example, hooks can be inherently formed in the initial process for preparing the textured outer sheet (for example, using the process described in the copending patent application "Textured Bulk Material Sheets", Canadian Patent Application No. TBA, of the same depositors, deposited in Canada on May 29, 2012; or the process described, for example, in any of Canadian Patent Applications Nos. 1,330, 521; 1,337,622 or 2,127,339, the descriptions of which are incorporated herein by reference). Alternatively, straighter and more upright structures (for example, of the nail type) can be pre-folded to become structures with a more hook shape. Such pre-folding can be done using rollers or a rush arrangement between flat plates in order to fold the finer points into the hooks. The hook shape provides a means for fitting or fixing the textured surface 3a to a fluid type core material and thereafter it solidifies, coating the hooks. For example, such an arrangement can be used to attach the textured face 3a to applied, uncured or solid materials, such as cements, resins, melted polymers, adhesives and the like. Therefore, a thicker core material 1a can be used, since folding does not require the core to be perforated.
    [0041] Figure 3b shows how the tips structure 20a can also be formed or curved to form hooks or retroverted filaments 20b. Such filaments can be used to favor the fitting of fabrics, soft lamina and to be forced into heated slides. The filament shape is well known for being resistant to removal, which adds another locking action to the present lamination of the invention.
    [0042] In figure 5, two structures of the harder outer blade are shown to have directly pierced the core blade 1a in such a way that their ends were bent by the pressure made against the opposite outer blade, creating the locked laminate of the present invention. . Figure 6 shows the hardest blade 3 with both sides textured with perforating structures so that it is the core between the two softer outer blades (for example, as shown in figure 7). In figure 7, the same textured double blade is shown as the core blade with the softest pierceable blade on one side and with the outer, harder and textured blade on the outside, creating a lamination with five layers, which can be folded together.
    [0043] Figure 8 shows only two blades for defining the progression of the tips 20a which are folded as they pass between the rollers until the fully folded tip 20b being pressed together against a third rigid surface such as an anvil. Also shown in figure 8 are examples of how the tips can be inverted 20c so that they go towards the blade and are pressed 20d where the effect is similar to riveting.
    [0044] Figures 9 and 10 show a detail of a perforating structure 20 on the blade 3a inserted almost completely inside the pre-softened blade 1c leaving a small contact gap 30 between them. After the second pressing, the post-hardened blade 1d (blade 1c is cooled to its normal hardness) is drilled an additional distance to close the contact gap and create a compressive 'tension envelope' 40 over the entire structure. This obviously applies to all structures in such a rolling process.
    [0045] Figure 11 shows the rolling lamination process, applied to a core of the double, textured and harder blade 3a with the softer outer blade 1a, this outer blade that can be made of the same or different materials and thickness.
    [0046] In figure 12, two different folding methods are shown, in which a laminate that is too thick prevents the tips from protruding. The flange 1a 'provides a thinner edge portion through which the perforating structures can emerge to be bent. The recess or cavity 41 within the thicker blade 1e also provides the same access to the folding tips. A folding tool (for example, a small roll or plate) can be pressed into the recess 41 or at the thinnest edge to locally bend the perforating structures that are exposed. In this way, specific areas of the laminate can be folded and other areas cannot.
    [0047] In figure 13, the hardest blade section 3 is shown with enlarged perforating structures, which have an arrangement generally parallel, at right angles, to the face of the blade. When this same section is folded, the ends of the structure must necessarily remain at right angles to the textured blade with which they are intrinsic and from which they protrude and in this way, their ends are shown moving together or converging at least a little bit. If, however, the illustrated section is part of the locked lamination materials described above, the tips are locked in position, which prevents their convergence which, in turn, provides a high degree of resistance to bending, where each structure adds resistance to bending. In this way, an exceptionally rigid laminate is created from a relatively non-rigid blade. When the tips are bent, an additionally substantial increase in strength is generated from the resistance to separation or flaking that is thereby imposed on the lamination.
    [0048] Such locked laminated material can then be formed using different and known production methods, which includes folding, extraction, drilling and the like. Such production methods can be increased by heating the laminate to allow the ends of the frame 50a to move through the softened blade to its new angular relationship (figure 13) and can then be locked in place when the blade moves. cool back to normal hardness, returning to the desired hardness on the newly formed laminate sheet.
    [0049] Although the above description refers to laminates with three and more folds, it will be understood that simple laminates with two folds can be created using a harder material (textured) and a softer material (perforable), using the same roll arrangement described above (with appropriate modifications) to "lock" the materials together.
    The above description illustrates only certain preferred embodiments of the invention. Accordingly, the present invention is not limited to the examples above. That is, people versed in the technique will realize and understand that modifications and variations are or will be possible in the use and execution of the teachings of the invention described here. The scope of the claims should not be limited by the preferred modalities described in the examples, on the contrary, it should contain the widest possible construction and consistent with the description as a whole.
    权利要求:
    Claims (10)
    [0001]
    1. Process for the production of a laminate sheet characterized by comprising: providing a sheet of a first material, the sheet having at least one textured face (3a) with a plurality of generally pointed structures (20) which have been raised on the sheet, wherein the sheet is unperforated; placing the textured face (3a) of the first material in contact with a face of a second softer material; and forcing the textured face (3a) and the face together in such a way that at least some of the pointed structures (20) enter the second material to form a laminate sheet, where the step of forcing causes at least the ends the pointed structures (20) pierce through the second material, so that the ends protrude on a second face of the second material; it also comprises heating one or both of the first material and the second material before forcing the materials to come together; and deforming the projecting tips to direct them over and into the second face of the second material, where the tips are deformed by pressing down on the tips via a second sheet of the first material.
    [0002]
    2. Process according to claim 1, characterized by the fact that the first material is a metal.
    [0003]
    3. Process according to claim 1, characterized by the fact that the first material is steel.
    [0004]
    Process according to claim 1, characterized in that the second material is at least one of a plastic, a resin, a polymer, a foam, a rubber, a wood and a hybrid material.
    [0005]
    5. Process according to claim 1, characterized by the fact that the second material is a curable material.
    [0006]
    Process according to claim 5, characterized in that the step of forcing comprises applying the second material to the first material in a partially cured state and then allowing the second material to be cured.
    [0007]
    Process according to claim 1, characterized in that the first material has a Brinell hardness of more than about 80 and the second material has a Brinell hardness of less than about 30.
    [0008]
    8. Process according to claim 1, characterized in that the forcing step comprises at least partially assembling the materials together in a heated state and then cooling the assembled materials.
    [0009]
    Process according to claim 1, characterized in that the second material is heated to a softened state and the forcing step comprises partially assembling the second material in the first material in the softened state, allowing the second material to cool and at least partially harden and then also forcing the materials to come together to form the laminate sheet.
    [0010]
    10. Process according to claim 1, characterized by the fact that the pointed structures (20) are pre-folded in a hook shape.
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    法律状态:
    2018-03-06| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2018-03-13| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2018-03-20| B06I| Publication of requirement cancelled [chapter 6.9 patent gazette]|Free format text: ANULADA A PUBLICACAO CODIGO 6.6.1 NA RPI NO 2462 DE 13/03/2018 POR TER SIDO INDEVIDA. |
    2019-03-12| B25A| Requested transfer of rights approved|Owner name: NUCAP INDUSTRIES INC. (CA) |
    2019-04-02| B25A| Requested transfer of rights approved|Owner name: NUGRIPMETAL S.A.R.L. (LU) |
    2020-03-10| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-11-10| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2021-02-02| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 23/05/2013, OBSERVADAS AS CONDICOES LEGAIS. |
    2022-01-18| B25A| Requested transfer of rights approved|Owner name: GRIPMETAL LIMITED (IE) |
    优先权:
    申请号 | 申请日 | 专利标题
    CA2,780,397|2012-06-18|
    CA2780397A|CA2780397C|2012-06-18|2012-06-18|Process for making a laminated sheet|
    PCT/CA2013/000501|WO2013188951A1|2012-06-18|2013-05-23|Process for making a laminated sheet|
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