TWI588023B - Composite plate combination method and composite plate combination - Google Patents

Description

Composite sheet bonding method and composite sheet assembly

The invention relates to a method for combining composite plates and a composite plate assembly, in particular to a composite plate which is joined together by a bonding means to be used as a composite plate for a vehicle body or a building. The bonding method is combined with a composite sheet.

Generally, the body of a vehicle is mostly made of composite sheets, and when it is desired to raise or enlarge a composite sheet, a plurality of composite sheets are usually joined together to form a composite sheet assembly of a larger area. In order to fix the composite plates that are connected to each other, a variety of different bonding methods have been developed in the industry.

Referring to Figures 1 and 2, a method for combining a plurality of composite sheets 1 is known. Each composite sheet 1 includes a core layer 11 and a first skin layer 12 and a bonded to opposite surfaces of the core layer 11. The second surface layer 13. The core layer 11 of each composite sheet 1 has a base section 111 and a mating section 112 formed at one end edge of the base section 111. The first surface layer 12 has a first overlapping section 121 correspondingly bonded to an outer side surface of the base section 111 and the butting section 112, and a side protruding from the side of the first overlapping section 121 The first bonding segment 122 outside the docking segment 112. The first The second surface layer 13 has a second overlapping section 131 correspondingly bonded to the other outer side surface of the base section 111, and a side edge connected to the second overlapping section 131 and correspondingly bonded to the docking section 112. The second bonding section 132.

When the adjacent composite sheets 1 are combined, a step of coating the lacquer layer is first performed on the outer side of the first overlapping section 121 and the first bonding section 122 of the first skin 12 of each composite panel 1 and The outer side of the second overlapping section 131 of the second skin layer 13 is painted to form a baking finish layer 14, respectively. A glue is then applied to one of the inner sides of the first bonding segment 122 and one of the outer sides of the second bonding segment 132 to form a glue layer 15. Finally, the adjacent composite sheet 1 is overlapped, so that the first bonding section 122 of the composite sheet 1 is overlapped on the outside of the second bonding section 132 of the adjacent composite sheet 1, and the bonding layer 15 is respectively introduced. Between each of the first bonding segments 122 and the second bonding segment 132 of the other composite sheet 1 to bond the adjacent composite sheets 1 together.

The first surface layer 12 and the second surface layer 13 are provided with the surface of the glue layer 15 without any special structural design. It is actually found that the glue layer 15 and the first surface layer 12 or the second surface layer 13 are The adhesion between the sheets is not good enough, which affects the bonding stability of the composite sheets 1 to each other. Therefore, it is known that the bonding method and the combined structure of the composite sheet 1 are to be improved.

Accordingly, it is an object of the present invention to provide a bonding method and composite sheet assembly for a composite panel which can improve the adhesion and adhesion stability.

Thus, the method for bonding composite sheets of the present invention comprises: Step A: preparing two composite sheets, each composite sheet comprising a core layer, and a first surface layer and a second surface layer on opposite surfaces of the core layer, the core layer comprising a base layer, and a connection a docking section at one end of the base section, the first skin layer including a first overlapping section corresponding to an outer side surface of the base section and the docking section, and a side protrusion protruding from the first overlapping section a first bonding layer outside the docking section, the second surface layer includes a second overlapping section corresponding to the other outer side surface of the base section, and one end is located at one end of the second overlapping section and corresponds to The first bonding section has a bonding inner side surface, and the second bonding section has a bonding outer side surface, and the bonding inner side surface and the bonding outer side surface are a non-smooth concave and convex surface, the first bonding section of each composite sheet may be overlapped outside the second bonding section of another composite sheet in a subsequent step; Step B: the preliminary overlapping The bonding inner side of the first bonding section and the bonding end of the second bonding section Forming a viscous glue layer on one of the faces, such that the glue layer is coated along the concave or convex surface of the adhesive inner side or the adhesive outer side surface; and step C: adjoining the two composite sheets The side edges are moved toward each other, and the first bonding section of each composite board is overlapped on the outer side of the second bonding section of another composite board, and the glue layer is respectively located in each first bonding section. Between the adhesive inner side surface and the adhesive outer side surface of the second bonding section of the other composite board, the first bonding section is bonded to the second bonding section of the adjacent another composite board .

The composite sheet assembly of the invention comprises: two composite sheets, And a second glue layer. Each composite sheet includes a core layer, and a first skin layer and a second skin layer on opposite surfaces of the core layer, the core layer comprising a base body segment and a docking portion connecting one end of the base body segment; The first skin layer includes a first overlapping section corresponding to an outer side surface of the base body segment and the docking section, and a first protrusion protruding from a side edge of the first overlapping section outside the docking section a second surface layer comprising a second overlapping portion corresponding to the other outer side surface of the base body segment, and a second end portion of the second overlapping portion and correspondingly coupled to the second connecting portion The first adhesive portion has a bonded inner side surface, and the second adhesive portion has a bonded outer side surface, and the adhesive inner side surface and the adhesive outer side surface are non-smooth concave and convex surfaces; The first bonding section of the composite sheet overlaps the outside of the second bonding section of the adjacent composite sheet. The glue layer is respectively disposed between the adhesive inner side surface of each first bonding section and the adhesive outer side surface of the second bonding section of another composite board, and each glue layer has two spaced opposite glues The surface of the adhesive surface extends along the concave inner surface of the overlapping inner side surface and the adhesive outer surface.

The effect of the invention is that the adhesive inner surface of the first adhesive segment and the outer surface of the second adhesive segment are processed into a non-smooth concave and convex surface, and the rough concave and convex surface is used for the gluing. The layer can also be combined with the formation of the concave and convex shape, which can increase the bonding strength and the adhesive bonding strength between the bonding portions and the bonding layer, so that the two composite sheets can be firmly bonded.

2‧‧‧Composite sheet

21‧‧‧ core layer

211‧‧‧ base segment

212‧‧‧ docking section

22‧‧‧ first surface

221‧‧‧first overlapping section

222‧‧‧First bonding section

223‧‧‧ Bonded inner side

224‧‧‧First Body Department

225‧‧‧First Paint Department

23‧‧‧ second surface

231‧‧‧Second lap joint

232‧‧‧Second bonding section

233‧‧‧Adhesive outer side

234‧‧‧Second body

235‧‧‧Second Paint Department

239‧‧‧stop section

24‧‧‧painted layer

26‧‧‧Glued layer

261‧‧‧Glued surface

31~33‧‧‧Steps

Other features and effects of the present invention will be apparent from the embodiments of the drawings, in which: Figure 1 is a cross-sectional exploded view of two known composite sheets; Figure 2 is a cross-sectional view of the two known composite sheets; Figure 3 is a partial cross-sectional view of a first embodiment of the composite sheet assembly of the present invention 4 is a partial cross-sectional view of the composite sheet assembly of the first embodiment; FIG. 5 is a schematic flow chart of a first embodiment of the method for joining composite sheets of the present invention; FIG. Figure 7 is a partial cross-sectional exploded view of a second embodiment of the composite sheet composite of the present invention; Figure 8 is a partial cross-sectional view of the composite sheet assembly of the second embodiment Figure 9 is a partial flow chart showing a second embodiment of the composite sheet joining method of the present invention; Figure 10 is a partial cross-sectional exploded view of a third embodiment of the composite sheet composite of the present invention; and Figure 11 is A partial cross-sectional view of the composite sheet composite of the third embodiment.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to Figures 3 and 4, a first embodiment of the composite panel assembly of the present invention comprises at least two sheets of composite sheets 2 joined together, and at least two The bonding layer 26 of the composite sheet 2 is bonded. Only the assembled structure on the right side of the left composite panel 2 and the left side of the right composite panel 2 is shown.

Each of the composite sheets 2 includes a core layer 21 and a first skin layer 22 and a second skin layer 23 respectively adhered to the upper and lower opposite surfaces of the core layer 21. The core layer 21 is a non-metal matrix hardened molded body made of a plastic material or a foaming agent added to the plastic material. The plastic material may be: polyethylene (PE), polypropylene (Polypropylene, Referred to as PP), or ethylene-vinyl acetate copolymer (EVA). The first surface layer 22 and the second surface layer 23 are all metal plates, and may be aluminum alloy plates, galvanized steel plates, galvanized steel plates, aluminum-zinc-magnesium steel plates, titanium alloy plates, copper alloy plates, stainless steel plates, zinc alloys. A rigid metal plate such as a plate or a painted steel plate.

The core layer 21 of each composite sheet 2 includes a base section 211 and a mating section 212 attached to one end of the base section 211 adjacent to another composite sheet 2. In the following description, the direction toward the core layer 21 is inward, and the direction away from the core layer 21 is outward. The first surface layer 22 has a first overlapping portion 221 correspondingly coupled to the outer side of the base portion 211 and the mating portion 212, and a side portion of the first overlapping portion 221 protrudes outwardly from the butt portion The first bonding segment 222 outside the 212. The first bonding section 222 is integrally connected to the first overlapping section 221 and has an adhesive inner side 223. The second surface layer 23 has a second overlapping section 231 correspondingly coupled to the other outer side surface of the base section 211, and one end of the second overlapping section 231 and Corresponding to the second bonding segment 232 of the docking segment 212. The second bonding section 232 is integrally connected to the second overlapping section 231 and has an adhesive outer side 233. The length of the second bonding segment 232 corresponds to the first bonding segment 222. The first bonding section 222 of each composite sheet 2 overlaps the outside of the second bonding section 232 of the adjacent composite sheet 2. The adhesive inner side surface 223 and the adhesive outer side surface 233 are non-smooth concave and convex surfaces.

Further, the second surface layer 23 of each composite sheet 2 further includes a stopping portion 239 protruding between the second overlapping portion 231 and the second bonding portion 232, and the stopping portion 239 is located at Adjacent to one side of the glue layer 26. Each of the composite sheets 2 of the present embodiment further includes a second lacquer layer 24, and the lacquer layer 24 is respectively located on the outer side of the first overlapping section 221 and the first bonding section 222 of the first surface layer 22 and the second surface layer 23 The outer side of the second overlapping section 231. The baking varnish layer 24 has a protective effect to prevent oxidative corrosion of the first skin layer 22 and the second skin layer 23.

The adhesive layers 26 are respectively disposed between the adhesive inner side 223 of each of the first adhesive segments 222 and the adhesive outer side 233 of the second adhesive segment 232 of the adjacent composite sheet 2 . Each of the adhesive layers 26 has two spaced apart opposing bonding surfaces 261 extending along the concave and convex surfaces of the bonded inner side surfaces 223 and the adhesive outer side surfaces 233, respectively, so that the bonding surfaces 261 It is also a concave surface. The bonding layer 26 is used for bonding and bonding the two composite sheets 2, and the bonding layer 26 may be a liquid glue or a hot melt adhesive, and the material thereof may be: maleic anhydride grafted polyethylene, maleic anhydride grafted polypropylene, horse. The anhydride is grafted with an ethylene-vinyl acetate copolymer, an epoxy resin, or a polyurethane adhesive.

Referring to Figures 3, 4, 5 and 6, a first embodiment of the method of joining composite sheets of the present invention can produce the composite sheet composite, the method comprising the steps of:

Step 31: Prepare the two composite sheets 2, each composite sheet 2 comprising the core layer 21, the first skin layer 22, the second skin layer 23 and the baking finish layer 24. The first bonding section 222 of each composite sheet 2 can be overlapped outside the second bonding section 232 of the adjacent other composite sheet 2 in a subsequent step. The adhesive inner side surface 223 and the adhesive outer side surface 233 can be subjected to roughening processing such as sandblasting, grinding, or embossing of the steel sheet to form the non-smooth concave and convex surface.

Step 32: forming the viscous on the one of the adhesive inner side 223 of the first bonding section 222 and the bonding outer side 233 of the second bonding section 232. The glue layer 26 is such that the glue layer 26 is covered along the concave and convex surface of the adhesive inner side surface 223 or the adhesive outer side surface 233. Specifically, the adhesive layer 26 of the present embodiment is exemplified by the adhesive inner side 223 of each composite sheet 2, and a adhesive layer is applied before the adhesive inner side surfaces 223 to form the glue. The adhesive material of layer 26 allows each glue layer 26 to be coated along the concave and convex surface of the adhesive inner side surface 223.

Step 33: The adjacent sides of the two composite sheets 2 are then moved toward each other, and the first bonding sections 222 of each composite sheet 2 are respectively overlapped on the second bonding section of the adjacent composite sheet 2. 232 outside, each bonding layer 26 is respectively disposed between the bonding inner side 223 of each first bonding section 222 and the bonding outer side 233 of the second bonding section 232 of the other composite board 2 During this time, the material of the glue layer 26 still has fluidity, so the glue layer 26 can extend along the concave and convex shape of the adhesive inner side surface 223 and the adhesive outer side surface 233 and closely adhere to the glue layer 26 to be cured. After that, the first bonding segments 222 can be bonded to the second bonding segments 232 of the adjacent composite sheet 2, so that the composite panel assembly can be completed. Specifically, the two composite sheets 2 are placed upside down, and the butting sections 212 of each other are adjacent to each other, and the first bonding section 222 of the left composite sheet 2 is overlapped on the right composite sheet 2 On the second bonding section 232, the first bonding section 222 of the right composite panel 2 is overlapped on the second bonding section 232 of the left composite panel 2. In addition, it is worth mentioning that the stop section 239 of each second surface layer 23 is designed to have the function of stopping the adhesive from flowing arbitrarily, and the adhesive material of the glue layer 26 can be prevented when the two composite sheets 2 are adhered and bonded. The second overlapping section 231 overflows to keep the surface of the sheet clean.

In summary, the adhesive inner surface 223 of the first adhesive segment 222 and the outer surface 233 of the second adhesive segment 232 are processed into a non-smooth concave and convex surface. The bonding layer 26 can also be combined to form a concave-convex shape, which can increase the bonding strength between the bonding portions and the bonding layer 26, thereby improving the bonding layer 26 and the first bonding segment 222 and the second bonding. The adhesive bond strength between the segments 232 allows the two composite sheets 2 to be firmly bonded.

Referring to Figures 7, 8, and 9, a second embodiment of the composite sheet composite of the present invention is substantially the same as the first embodiment, except that the first bonding section of each composite sheet 2 of the present embodiment The 222 includes a first body portion 224 integrally connected to the first overlapping portion 221, and a cover An inner side surface of the first body portion 224 is formed with a first painted portion 225 of the adhesive inner side surface 223; the second adhesive portion 232 includes a second body portion integrally connected to the second overlapping portion 231 234, and a second painted portion 235 that is coated on an outer side surface of the second body portion 234 and formed with the adhesive outer side surface 233.

The materials of the first baking varnishing portion 225, the second baking varnishing portion 235 and the baking varnish layer 24 may be: polyester coating, Silicon modified polyester coating, acrylic paint, polyvinylidene fluoride (PVDF). Coatings, or copolymers of fluoroolefins with alkyl vinyl ethers or esters (FEVE) coatings. The first baking portion 225 and the second baking portion 235 may be any one of the above coating materials, and further include an epoxy resin (Epoxy) or a polyurethane (PU), which can lift the first baking portion 225 and the second baking portion. The material compatibility between the 235 and the glue layer 26 is such that the adhesive bond strength between each of the paint portions and the glue layer 26 is improved. In addition, the first skin layer 22 and the second skin layer 23 can be completely protected by the first baking portion 225, the second baking portion 235 and the baking layer 24, and the first skin layer 22 and the second skin layer 23 are prevented from being rusted.

The method for joining the composite sheets of the present embodiment is substantially the same as the method of the first embodiment, except that the first baking varnish portion 225 and the second baking varnish portion 235 must be additionally formed in this embodiment. The inner side surface of the first body portion 224 and the outer side surface of the second body portion 234 of the present embodiment may be processed to form a concave-convex surface, and the first baking paint portion 225 and the second baking paint portion 235 are formed. First, a paint material is applied along the inner side surface of the first body portion 224 and the concave surface of the outer side surface of the second body portion 234, and then baked to dry and harden the paint material. The first baking varnish portion 225 and the second baking varnish portion 235 are formed separately. The adhesive inner side surface 223 of the first baking varnish portion 225 and the adhesive outer side surface 233 of the second baking varnish portion 235 also form an uneven surface along the first body portion 224 and the second body portion 234, respectively. Then, the adhesive layer 26 adhesive material is also applied to the adhesive inner side surface 223 or the adhesive outer side surface 233, and then the two composite sheets 2 are similarly moved and attached to form the composite sheet combination of the embodiment. body.

Referring to Figures 10 and 11, a third embodiment of the composite panel assembly of the present invention is substantially the same as the second embodiment, except that the inner side of the first body portion 224 of the present embodiment and the second body portion are The outer side surface of the 234 is not roughened, so the inner side surface and the outer side surface have a substantially smooth surface. However, the first baking varnish portion 225 and the second baking varnish portion 235 are formed by applying a baking varnish material to the inner side surface of the first body portion 224 and the outer side surface of the second body portion 234, and baking paint. The material is locally coated to be thick to make the coating thickness uneven, and then baked to dry and harden the baking material to form the first baking portion 225 and the second baking portion 235, respectively. As a result, both the first painted portion 225 and the second painted portion 235 are in a state in which the partial thickness is thick and the partial thickness is thin, so that the adhesive inner surface 223 and the adhesive outer surface 233 can be concave and convex surfaces. Therefore, in this embodiment, the bonding strength between the first skin layer 22, the second skin layer 23 and the bonding layer 26 can be improved, and the bonding stability of the two composite sheets 2 can be improved.

On the other hand, the implementation of the present invention is not limited to the manner in which the baking material is partially thickened, for example, the first baking portion 225 and the first The second baking portion 235 performs a plasma treatment or a flame treatment to modify the surface of the first baking portion 225 and the second baking portion 235, so that the bonded inner surface 223 and the adhesive are adhered. The outer side surface 233 is formed with a concave-convex surface to enhance the adhesion between the paint portions and the glue layer 26. In addition, the first baking varnish portion 225 and the second baking varnish portion 235 may be formed by roll coating by a coating machine, and the coating roller (also referred to as a rotating roller) of the coating machine is engraved into a concave-convex surface. Therefore, after the roll coating, the adhesive inner side surface 223 and the adhesive outer side surface 233 can form an uneven surface. The roll coating method is a carrier of a coating roller as a coating material (in this embodiment, a baking varnish material), the coating layer forms a film layer of a certain thickness on the surface of the coating roller, and is further rotated by the coating roller during the rotation process. The coating (in the present embodiment, the first body portion 224 is in contact with the second body portion 234), thereby coating the coating on the surface of the object to be coated.

It can be seen from the above embodiments that the bonding inner side surface 223 and the bonding outer side surface 233 of the present invention can form non-smooth concave and convex by sandblasting, grinding, steel plate embossing, plasma surface treatment, flame surface treatment, or roll coating. surface.

However, the above is only the embodiment of the present invention, and the scope of the invention is not limited thereto, and all the equivalent equivalent changes and modifications according to the scope of the patent application and the patent specification of the present invention are still The scope of the invention is covered.

2‧‧‧Composite sheet

21‧‧‧ core layer

211‧‧‧ base segment

212‧‧‧ docking section

22‧‧‧ first surface

221‧‧‧first overlapping section

222‧‧‧First bonding section

223‧‧‧ Bonded inner side

23‧‧‧ second surface

231‧‧‧Second lap joint

232‧‧‧Second bonding section

233‧‧‧Adhesive outer side

239‧‧‧stop section

24‧‧‧painted layer

26‧‧‧Glued layer

261‧‧‧Glued surface

Claims (8)

A method for bonding composite sheets, comprising: step A: preparing two composite sheets, each composite sheet comprising a core layer, and a first skin layer and a second skin layer on opposite surfaces of the core layer, the core layer The method includes a base segment and a docking segment connecting one end of the base segment, the first skin layer including a first overlapping segment corresponding to an outer side surface of the base segment and the docking segment, and a first overlapping segment a side of the stack of protrusions protrudes from the first bonding section outside the butting section, the second surface layer includes a second overlapping section corresponding to the other outer side surface of the base section, and one of the One end of the second splicing section and corresponding to the second bonding section of the splicing section, the first bonding section has a bonding inner side, and the second bonding section has a bonding outer side, the bonding The inner side surface and the adhesive outer side surface are non-smooth concave and convex surfaces, and the first bonding section of each composite board can be overlapped on the outer side of the second bonding section of another adjacent composite board in a subsequent step; B: the bonding of the first bonding section of the preliminary stack Forming a viscous glue layer on one of the side surface and the adhesive outer side surface of the second adhesive segment, so that the glue layer covers the adhesive inner surface or the concave and convex surface of the adhesive outer side surface And step C: the adjacent sides of the two composite sheets are moved toward each other, and the first bonding section of each composite sheet is overlapped on the outside of the second bonding section of the adjacent composite sheet, respectively. The glue layer is respectively disposed between the adhesive inner side surface of each first bonding section and the adhesive outer side surface of the second bonding section of another composite board to connect the first bonding sections and adjacent another The second bonding section of the composite board is adhesively bonded; wherein the second surface layer of each composite board further comprises a stopping section protruding between the second overlapping section and the second bonding section. The method for bonding composite sheets according to claim 1, wherein the adhesive inner side surface and the adhesive outer side surface are formed by sand blasting, grinding, steel plate embossing, plasma surface treatment, flame surface treatment, or roll coating. Non-smooth concave surface. The method of joining composite sheets according to claim 1, wherein the first bonding portion of each composite sheet comprises a first body portion integrally connected to the first overlapping portion, and a first covering portion An inner side surface of a body portion is formed with a first painted portion of the adhesive inner side; the second adhesive portion includes a second body portion integrally connected to the second overlapping portion, and a covering portion An outer side surface of the second body portion is formed with a second baking portion that adheres the outer side surface. The method of joining composite sheets according to claim 3, wherein the inner side surface of the first body portion and the outer side surface of the second body portion are both concave and convex surfaces, and the first baking portion and the second baking portion are formed. a process of applying a baking varnish material along the inner side surface of the first body portion and the concave and convex surface of the outer side surface of the second body portion, and then baking to dry and harden the lacquer material, thereby respectively forming the a first baking section and the second baking section. The method of joining composite sheets according to claim 3, wherein the forming process of the first baking portion and the second baking portion is preceded by the inner side of the first body portion and the second body portion The outer side is coated with a roast The lacquer material, and the lacquer material is partially coated thickly, and then baked to dry and harden the lacquer material to form the first lacquered portion and the second lacquered portion, respectively. The method of joining composite sheets according to any one of claims 3 to 5, wherein the first baking portion comprises an epoxy resin or a polyurethane, and the second baking portion comprises an epoxy resin or a polyurethane. A composite panel assembly comprising: two composite sheets, each composite sheet comprising a core layer, and a first skin layer and a second skin layer on opposite surfaces of the core layer, the core layer comprising a substrate segment, And a docking section connected to one end of the base section; the first surface layer includes a first overlapping section corresponding to an outer side surface of the base section and the docking section, and a first overlapping section a side edge protruding from the first bonding section outside the butting section; the second surface layer includes a second overlapping section correspondingly coupled to the other outer side surface of the base section, and one of the second overlapping sections The first bonding segment has a bonding inner side surface, and the second bonding segment has a bonding outer side surface, and the bonding inner side surface is bonded to the second bonding segment. The outer side surface is a non-smooth concave and convex surface; the first bonding section of each composite board is overlapped on the outer side of the second bonding section of the adjacent composite board; and the two glued layers are respectively located first The second side of the adhesive inner side of the bonding section and the other composite sheet Bonding section between the outer side surface of each bonding layer has two spaced opposed cemented surface of the cemented surfaces are lapped along with the inner side surface of the bonding of the outer side surface of the bonding The concave surface extends; wherein the second surface layer of each composite sheet further comprises a stopping portion protruding between the second overlapping portion and the second bonding portion. The composite sheet assembly of claim 7, wherein the first bonding portion of each composite sheet comprises a first body portion integrally connected to the first overlapping portion, and a first covering portion An inner side surface of the body portion is formed with a first baking portion of the adhesive inner side; the second bonding portion includes a second body portion integrally connected with the second overlapping portion, and a covering portion An outer side surface of the second body portion is formed with a second baking portion for bonding the outer side surface.