Method for manufacturing vehicle window glass with resin member, and vehicle window glass with

Abstract

The invention provides a technology for manufacturing a window glass with a resin member for a vehicle. The technology enables the temporary fixation of the member to be more easily carried out in a manufacturing method of a window glass with a resin member. A method for manufacturing a vehicle window glass with a resin member includes an arrangement step for arranging a resin member on a vehicle window glass via an adhesive, and a first curing step for locally irradiating a non-adhesive surface of the resin member with infrared rays to cure a local portion of the adhesive.

Description

Technical Field

[0001] The present invention relates to a method for producing a window glass for a vehicle with a resin member and a window glass for a vehicle with a resin member. Background Art

[0002] A structure in which components such as a mirror base and a bracket are bonded to a vehicle window glass by an adhesive is known. In the manufacture of such a vehicle window glass with a component, an adhesive is applied to the bonding surface of the component and the component is mounted on the vehicle window glass, and then the adhesive is cured to bond the component to the vehicle window glass.

[0003] Most of the adhesives commonly used for the above bonding require a certain curing time. Therefore, after the component is mounted on the vehicle window glass, it is often necessary to temporarily fix the component so that the relative position of the component and the vehicle window glass will not shift even when a load such as vibration is applied. As a means of temporary fixing, double-sided tape is known, and there is also consideration of using an adhesive that is different from the original adhesive and has a short curing time (for example, Patent Document 1). Prior art literature Patent Literature

[0004] Patent Document 1: Japanese Patent Application Publication No. 2022-7591 Summary of the invention Technical problem to be solved by the invention

[0005] The double-sided tape or different adhesive is an additional material different from the adhesive used originally. Moreover, such double-sided tape or different adhesive needs to be attached or applied by another method, so it takes time and effort to apply or stick the double-sided tape or different adhesive in addition to the application process of the adhesive used originally. Therefore, a simpler temporary fixing technology that reduces the amount of materials and time and effort is needed.

[0006] In view of the above problems, an embodiment of the present invention has a technical problem of providing a technique for more easily performing temporary fixing of a member in a method for manufacturing a vehicle window glass with a resin member. Technical solutions adopted to solve technical problems

[0007] In order to solve the above-mentioned technical problems, a method for manufacturing a vehicle window glass with a resin component according to one embodiment of the present invention includes a configuration step of configuring the resin component on the vehicle window glass by an adhesive, and a first curing step of locally irradiating the non-adhesive surface of the resin component with infrared rays to locally cure the adhesive. Effects of the Invention

[0008] According to one embodiment of the present invention, in a method for manufacturing a vehicle window glass with a resin member, temporary fixing of the member can be performed more easily. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 An exemplary view of a vehicle window glass with a member manufactured according to one embodiment is shown. Figure 2 Shown Figure 1 An enlarged view of the II line section. Figure 3 Shown is a flow chart of one example of a manufacturing method according to one embodiment. Figure 4 A schematic diagram showing one process of a production example of a vehicle window glass with a member according to one embodiment. Figure 5 A schematic diagram showing one process of a production example of a vehicle window glass with a member according to one embodiment. Figure 6 Shown Figure 5 An enlarged view of the II-II line section. Figure 7 A schematic diagram showing one process of a production example of a vehicle window glass with a member according to one embodiment. DETAILED DESCRIPTION

[0010] The embodiments of the present invention will be described below with reference to the accompanying drawings. In addition, the same or corresponding structures in each drawing are marked with the same symbols, and their description may be omitted.

[0011] Figure 1 FIG. 1 is a diagram showing an example of a vehicle window glass with a member 1 manufactured according to an embodiment of the present invention as viewed from the vehicle interior side. Figure 2 Shown Figure 1 A partial enlarged view of the II line section. Figure 1 and Figure 2 As shown, the member 30 is bonded to the main surface of the vehicle window glass 10 using an adhesive 20 . Figure 1 and Figure 2 In the example, the member 30 is a resin bracket, which is bonded to the upper side of the vehicle interior surface of the vehicle window glass 10 and near the center in the left-right direction ( Figure 1 ). In addition, the component 30 may also be a metal bracket. Figure 1 The vehicle window glass 10 is a front window glass, but the vehicle window glass of the present embodiment may be a rear window glass, a side window glass, a sunroof glass, or the like.

[0012] like Figure 1 and Figure 2As shown, the vehicle window glass 10 is formed with a shielding layer 50 at the peripheral portion. The shielding layer 50 is also called a black ceramic layer. The structure of the shielding layer 50 is not particularly limited, and is preferably a layer formed by applying a black, gray, or dark brown colored ceramic paste (glass paste) and firing. The shielding layer 50 has the function of protecting a sealant or the like used to install and hold the vehicle window glass 10 on the vehicle body from the influence of ultraviolet rays or the like. In addition, the shielding layer 50 may also be a layer formed by applying an organic ink or an inorganic ink. Figure 1 and Figure 2 In the example of FIG. 1 , the member 30 is directly bonded to the shielding layer 50 of the vehicle window glass 10 by the adhesive 20 .

[0013] As the vehicle window glass 10 used in this embodiment, glass plates such as soda-lime silicate glass, aluminosilicate glass, borate glass, lithium aluminosilicate glass, and borosilicate glass can be used. The forming method of the glass plate is not particularly limited, but it is preferably glass formed by, for example, a float process. The glass plate may be unreinforced glass or reinforced glass that has been subjected to air-cooling reinforcement or chemical reinforcement treatment. Unreinforced glass is glass formed by forming molten glass into a plate shape and annealing. Reinforced glass is glass formed with a compressive stress layer on the surface of unreinforced glass. In the case where the reinforced glass is air-cooled reinforced glass, the heated glass plate can be rapidly cooled from a temperature near the softening point, and a compressive stress can be generated on the glass surface by utilizing the temperature difference between the glass surface and the inside of the glass, thereby strengthening the glass surface. In the case where the reinforced glass is chemically reinforced glass, a compressive stress can be generated on the glass surface by utilizing an ion exchange method or the like, thereby strengthening the glass surface. In addition, the vehicle window glass is preferably transparent, but it may also be glass that has been colored to a degree that does not impair transparency. The shape of the glass is not particularly limited to a rectangular shape, and can be processed into various shapes. In addition, the glass plate used for the vehicle window glass can be bent to form a curved shape. As the bending forming, gravity forming or pressure forming can be used. When the vehicle window glass 10 of this embodiment is used for an automobile, it can be a multi-curved glass that is curved in the front-back direction and the up-down direction of the automobile, or it can be a single-curved glass that is curved only in the front-back direction or the up-down direction. The radius of curvature of the window glass can be greater than 200 mm and less than 300,000 mm.

[0014] The vehicle window glass 10 may be a single piece of glass or a laminated glass ( Figure 2 ). Laminated glass is a glass obtained by bonding a plurality of glass plates 11 and 12 via an intermediate film 15. The plurality of glass plates used for laminated glass may also use the above-mentioned glasses.

[0015] In laminated glass, the interlayer 15 ( Figure 2) is not particularly limited, but is preferably a thermoplastic resin. As a specific example of the material of the intermediate film, thermoplastic resins used in the past such as plasticized polyvinyl acetal resins, plasticized polyvinyl chloride resins, saturated polyester resins, plasticized saturated polyester resins, polyurethane resins, plasticized polyurethane resins, ethylene-vinyl acetate copolymer resins, ethylene-ethyl acrylate copolymer resins, cycloolefin polymer resins, ionomer resins, etc. can be cited. In addition, the resin composition containing modified block copolymer hydrogenate described in Japanese Patent No. 6065221 is also suitable for use. Among them, from the perspective of excellent balance of various properties such as transparency, weather resistance, strength, adhesion, penetration resistance, impact energy absorption, moisture resistance, heat insulation and sound insulation, it is suitable to use plasticized polyvinyl acetal resins. The above-mentioned thermoplastic resins can be used alone or in combination of two or more. The "plasticity" in the above-mentioned plasticized polyvinyl acetal resins means that it can be plasticized by adding a plasticizer. The same meaning is also expressed for other plasticized resins.

[0016] The intermediate film 15 may be a resin that does not contain a plasticizer, such as an ethylene-vinyl acetate copolymer resin. As the above-mentioned polyvinyl acetal resin, polyvinyl formal resin obtained by reacting polyvinyl alcohol (PVA) with formaldehyde, polyvinyl acetal resin in a narrow sense obtained by reacting PVA with acetaldehyde, polyvinyl butyral resin (PVB) obtained by reacting PVA with n-butyraldehyde, etc., can be cited. In particular, from the perspective of excellent balance of various properties such as transparency, weather resistance, strength, adhesion, penetration resistance, impact energy absorption, moisture resistance, heat insulation and sound insulation, PVB can be cited as a suitable material. In addition, the above-mentioned resins can be used alone or in combination of two or more.

[0017] In the case of laminated glass, the thickness of the vehicle window glass as a whole (including the thickness of the intermediate film) can be 2.3 mm or more and 8.0 mm or less. In addition, the thickness of each of the plurality of glass sheets constituting the laminated glass can be 0.5 mm or more and 3.5 mm or less. The thickness of the plurality of glass sheets can be the same as or different from each other. In addition, the thickness of the inner glass sheet can be 0.5 mm or more and 2.3 mm or less.

[0018] The resin member 30 is not particularly limited as long as it can be mounted at any position on the main surface of the vehicle window glass 10. The member 30 may be a mirror holder for mounting an internal reflector, a bracket for mounting a sensor, a camera, etc., a molding, a protector, a pin, a clip, a bracket, a hinge, etc.

[0019] The resin member 30 may be a member entirely made of resin, such as a resin molded body, or a member formed of a material other than resin with a part or all of the surface of the molded body coated with resin. In this specification, the resin member 30 may contain resin at least on the surface.

[0020] The material resin used for the resin component 30 can be a curable resin or a thermoplastic resin. Examples of resins include polyesters such as polyethylene terephthalate (PET) and polybutylene terephthalate (PBT), polyolefins such as polyethylene (PE) and polypropylene (PP), polycarbonate (PC), polyamides (PA) such as nylon 6 and nylon 6,6, high heat-resistant polyamides based on terephthalic acid or isophthalic acid (PA6T, PA6I, PA6T / 6I, etc.), polyimide (PI), polyetherimide (PEI), acrylonitrile-butadiene-styrene (ABS), polyacetal (POM), polyvinyl chloride (PVC), epoxy resin (EP), etc. In addition, in the case where the resin component 30 is a component in which the surface of a molded body formed of a material other than resin is coated with resin, the material of the molded body can be a metal, for example, aluminum, zinc, iron, stainless steel, etc. In this case, the material of the metal can be a single metal composed of one metal element or an alloy.

[0021] The adhesive 20 of the present embodiment can be any adhesive that can be used to bond the window glass 10 and the component 30, without any particular restrictions, and can be epoxy, polyurethane, silicone, modified silicone, melamine, phenol, acrylic, etc. In addition, it can be a one-component type or a two-component type. The adhesive is preferably an adhesive that promotes curing by heat (thermosetting adhesive), that is, a heat-triggered type (an adhesive that promotes curing by heating with thermal cations, thermal free radicals, etc.), or contains a thermosetting polymer as a main component. In the case of a thermosetting adhesive, the curing timing can be controlled by the manufacturer, so it is preferred. In addition, the thermosetting adhesive can be a heat-curing type (an adhesive that needs to be heated in the usual form of use) or a room temperature curing type (an adhesive that undergoes a curing reaction by being placed in the usual form of use and does not need to be heated), but a room temperature curing type adhesive is preferably used in the method of the present embodiment. Specific examples of the adhesive include two-component modified silicone adhesives (modified silicone / epoxy adhesives), two-component polyurethane adhesives, one-component thermosetting polyurethane adhesives, and second-generation acrylic adhesives (SGA).

[0022] Figure 3 FIG. 1 is a flow chart showing a method for manufacturing a vehicle window glass 1 with a component according to an embodiment. Figure 3As shown, the manufacturing method of this embodiment includes, in sequence, a configuration step (S11) of configuring a resin component on a vehicle window glass by means of an adhesive, and a first curing step (S12) of locally irradiating the non-adhesive surface of the component with infrared rays to cure a local portion of the adhesive. The manufacturing method of this embodiment may further include a second curing step (S13) of curing a portion other than the local portion, i.e., a main portion, after the first curing step (S12). In addition, in this specification, the first curing step (S12) is sometimes referred to as a temporary fixing step, and the second curing step (S13) is sometimes referred to as a formal fixing step.

[0023] In this embodiment, the temporary fixation of the component 30 to the vehicle window glass 10 can be performed by partially curing the adhesive. In other words, for temporary fixation, a part of the adhesive originally used for formal fixation is used. Therefore, there is no need to prepare additional materials such as double-sided tape, different adhesives, etc. for the temporary fixation process. In other words, the amount of materials will not increase due to temporary fixation. Moreover, the traditional temporary fixation using double-sided tape, for example, must be performed by manual work, which cannot or is difficult to be automated on the production line, but this embodiment does not require a laborious manual operation process. In addition, in the past, temporary fixation using different adhesives required a different form of curing method from the curing method of the adhesive for formal fixation, but this embodiment does not require such a different form of curing method. Therefore, temporary fixation can be performed through a simple process without increasing the amount of materials due to temporary fixation and without increasing the time and effort in manufacturing.

[0024] Afterwards, with Figure 3 Refer to Figures 4 to 7 , each step of the manufacturing method of this embodiment is described in more detail. Figure 4 The figure shows the configuration process (S11). Figure 5 and Figure 6 The first curing step (S12) is shown in FIG. Figure 7 The second curing step (S13) is shown. Figure 6 Shown Figure 5 Schematic diagram of the II-II line cross section.

[0025] In the placement step (S11), the resin member 30 is placed on the vehicle window glass 10 by means of the adhesive 20. In the placement step (S11), the bonding surface 31 of the member 30 is checked and the bonding surface 31 is cleaned as necessary. The bonding surface 31 of the member 30 is a surface facing the main surface of the vehicle window glass 10 and along the main surface, and can be a flat surface or a curved surface having a curvature matching the curvature of the facing surface of the vehicle window glass 10. Then, for example, Figure 4As shown, adhesive 20 is applied to a predetermined portion of the bonding surface corresponding region 31a on the main surface of the vehicle window glass 10 corresponding to the bonding surface 31 of the member 30. The adhesive 20 can be applied by a conventionally known method depending on the type of adhesive.

[0026] The adhesive 20 may be applied to the entire bonding surface corresponding area 31a or may be applied to a portion thereof. Figure 4 As shown, the adhesive 20 may be applied to multiple locations non-continuously. When applied to multiple locations, it may be applied in a line or dot pattern. Figure 4 A plurality of straight adhesives 20 each having a substantially constant width in a plan view are illustrated, but the application form of the adhesive 20 (application range, continuous or discontinuous, application area, application location and number) is determined by the structure of the component 30, i.e., the size, shape, material type, function (if it is a bracket, what is the object to be held, etc.) of the component 30. The adhesive 20 is applied in advance to the position where the temporary fixing portion is to be formed, i.e., to the portion to be irradiated with infrared rays in the subsequent first curing step (S12), i.e., to the position where the local portion of the adhesive is to be formed.

[0027] After applying the adhesive 20, the bonding surface 31 of the member 30 is made to face and match with the bonding surface corresponding area 31a of the vehicle window glass 10, and the member 30 is arranged on the main surface of the vehicle window glass 10. In addition, in the arrangement step (S11), after applying the adhesive 20 to the bonding surface 31 of the member 30, the member 30 with the adhesive 20 may be brought into contact with a desired position of the main surface of the vehicle window glass 10. In addition, when the member 30 is provided with a through hole 35 (described later), the adhesive 20 is preferably applied so as to overlap with the through hole 35.

[0028] After the above-mentioned configuration step (S11), the first curing step (S12) is entered. In the first curing step (S12), if Figure 5 As shown, infrared rays are locally irradiated to the non-bonding surface 32 of the component 30. In this specification, "local irradiation" of infrared rays means that infrared rays are irradiated to a local area without irradiating other areas. By locally irradiating infrared rays, only a specified portion of the adhesive 20 is heated, or a specified portion of the adhesive 20 is heated at a faster rate than other portions. Therefore, at the stage when the first curing step (S12) is completed, when the temperatures of the specified portion and other portions of the adhesive 20 are measured separately, the temperature of the specified portion is higher than the temperature of the main portion. Such local irradiation of infrared rays preferably uses a means that can locally concentrate heat energy and / or light energy, that is, an irradiation means with high directivity (high light-concentrating or heat-concentrating properties).

[0029] Figure 5In the embodiment, as the irradiation means for the first curing step (S12), an irradiation means 80 including an infrared irradiation unit 81 and a power supply and control unit 85 is shown. Figure 5 As shown, the infrared rays irradiated by the infrared irradiation part 81 of the irradiation means 80 are irradiated to a part of the top-view area of ​​the entire component 30, that is, only a part of the top-view area relative to the entire component 30. For example, in a top view, the circle equivalent diameter of the area irradiated with infrared rays can be more than 2 mm and less than 10 mm. That is, if the irradiation area is circular, the irradiation area can have a diameter within the above range, and if the irradiation area has a shape other than a circle, the irradiation area can have the same area as a circle having a diameter within the above range. In addition, a plurality of irradiation means 80 can be prepared to perform local irradiation of infrared rays at multiple locations at the same time, but the circle equivalent diameter in the above range is the value of one irradiation area.

[0030] The infrared rays irradiated by the irradiation means 80 may be heat rays and / or light rays, and there is no particular limitation as long as the adhesive 20 can be cured, but near infrared rays to short-wavelength infrared rays (wavelengths of 780 nm to 2500 nm) are preferred. Therefore, the irradiation means 80 may be a halogen lamp heater, such as a halogen spot heater, a laser, or the like. These irradiation means are preferred because they are non-contact and highly directional. When a halogen spot heater, a laser, or the like is used as the irradiation means 80, it has a focusing diameter (irradiation diameter) in the range of the above-mentioned equivalent circular diameter (2 mm to 10 mm).

[0031] In addition, if Figure 5 As shown, the irradiation means 80 is arranged on the non-adhesive surface 32 side of the component 30, and irradiates infrared rays to the non-adhesive surface 32. The non-adhesive surface 32 is the surface on the opposite side of the adhesive surface 31 of the component 30, and is the surface on the side where the adhesive 20 is not applied. The irradiation angle of the infrared rays can be a vertical direction relative to the non-adhesive surface 32, or a direction that forms an angle of 45° to 135° with the vertical direction. Among them, irradiation along the vertical direction relative to the non-adhesive surface 32 can efficiently heat a local part of the adhesive 20 to cure it.

[0032] When the infrared ray is irradiated to the non-adhesive surface 32, the infrared ray may be irradiated directly to the non-adhesive surface 32 of the component 30. For example, when a through hole 35 is provided on the component 30, the infrared ray may not be irradiated directly to the component 30. Figure 4 and Figure 5 As shown, the through hole 35 is a hole that penetrates the thickness direction of the component 30. In the case where the component 30 is provided with the through hole 35, as shown in FIG. Figure 5 and Figure 6As shown, the infrared rays from the infrared irradiation unit 81 can directly irradiate the surface of the adhesive 20 through the through hole 35. That is, the infrared rays can be irradiated to the area of ​​the adhesive 20 exposed by the through hole 35 of the component 30. In addition, in this case, not only the surface of the adhesive 20 but also the resin around the through hole 35 can be directly irradiated with the infrared rays.

[0033] The infrared irradiation in the first curing step (S12) causes the local part of the adhesive 20 to cure rapidly, imparting a large amount of energy in a short period of time, so that the resin part directly irradiated with infrared rays or the resin near the infrared irradiation area undergoes a modification that can be seen by conventional methods. Figures 4 to 6 ), the portion of the resin directly irradiated with infrared rays can be reduced or eliminated, and the portion of the resin member 30 that is modified can be reduced. In addition, by allowing infrared rays to pass through the through holes 35, the adhesive 20 can be directly irradiated with infrared rays ( Figure 6 ), the local curing of the adhesive 20 in the first curing step (S12) can be efficiently performed. In addition, in this specification, the modification of the resin member 30 caused by infrared irradiation includes physical deformation (formation of bubbles, change in surface roughness, formation of concave or convex portions on the surface) and / or chemical composition changes (charring, oxidation, decomposition, discoloration, etc.).

[0034] The size of the through hole 35 can be determined according to the size of the local portion (temporary fixing portion) to be cured in the first curing step (S12), the type of resin material of the resin component 30, the purpose and function of the component 30, etc., but the through hole 35 can be, for example, a circular hole with a diameter of preferably 2 mm to 10 mm, more preferably 4 mm to 8 mm, when viewed from above, or a hole with a size equal to the area of ​​the circle when viewed from above. By making the through hole 35 within the above range, infrared rays can be fully penetrated to reduce the modified portion of the resin component 30, and at the same time, the adhesive 20 can be efficiently cured, and the firmness of the component 30 itself can also be ensured.

[0035] From the viewpoint of reducing the portion of the resin directly exposed to infrared rays and reducing the modification of the resin component 30, the portion formed on the component 30 is not necessarily a through hole 35, but may be a portion where the resin material is removed in the thickness direction compared to the surrounding (thickness direction material removal portion). For example, instead of the through hole 35, a notch formed by hollowing out the periphery of the component 30 in the surface direction (i.e., a notch formed by making the periphery of the component 30 concave in a top view) or a thin-walled portion where the thickness of the component 30 is thinner than its surrounding may be provided on the component 30 to replace the through hole 35. However, it is preferred to provide the through hole 35 or the notch on the component 30 because infrared rays can directly irradiate the adhesive 20. In addition, since the fixing effect of the component 30 and the vehicle window glass 10 is high when the temporary fixation of the component 30 is formed at a position with a certain distance from the periphery, the thickness direction material removal portion is more preferably a through hole 35 or a thin-walled portion than a notch.

[0036] Furthermore, if the member 30 itself is originally formed with a material removal portion in the thickness direction such as a through hole, a notch, a thin-walled portion, etc. for other purposes, such an originally formed portion can be used when irradiating with infrared rays.

[0037] As described above, when the component 30 has a portion where material is removed in the thickness direction, when the component 30 is placed on the vehicle window glass 10 via the adhesive 20 in the placement step (S11), it is preferred that at least a portion of the portion where material is removed in the thickness direction of the component 30 is positioned so as to overlap with the adhesive 20, and it is more preferred that the portion where material is removed in the thickness direction is positioned so as to overlap with the adhesive 20 as a whole, i.e., to be included in the application area of ​​the adhesive 20 when viewed from above. For example, Figure 4 In the example of , the adhesive 20 is applied to the predetermined position where the through hole 35 is arranged. Thus, when the member 30 is observed from the non-adhesive surface 32 at the stage where the arrangement step ( S11 ) is completed, the state of the adhesive 20 can be seen through the through hole 35 .

[0038] Then, in the first curing step (S12), infrared rays are irradiated to the material removal portion in the thickness direction of the component 30, preferably to the center of the material removal portion in the thickness direction. For example, when a component 30 having a through hole 35 is used and a halogen spot heater is used as the curing means in the first curing step (S12), it is preferred that the center of the through hole 35 (the center of the pattern when the through hole 35 is non-circular) in a plan view coincide with the center of the focal circle of the halogen spot heater ( Figure 6 ) for irradiation.

[0039] In one embodiment, a member 30 without any material removal portion in the thickness direction as described above can be used. That is, infrared rays can be irradiated without any processing being performed on the member 30. In this case, since the infrared rays directly irradiate the resin member 30, the irradiated portion of the resin member 30 is modified.

[0040] Thus, in the first curing step (S12), the local irradiation of infrared rays causes only a part of the adhesive 20 to heat up and cure in advance. The local part thus cured becomes a temporary fixing portion between the component 30 and the vehicle window glass 10. The temporary fixing portion prevents the component 30 and the vehicle window glass 10 from being displaced in the subsequent steps, for example, even when vibration occurs on the production line. At the stage when the first curing step (S12) is completed, the hardness of the prescribed portion of the adhesive 20 is greater than the hardness of the portion other than the prescribed portion (main portion).

[0041] The local portion cured in the first curing step (S12) may be one portion or multiple separated portions. In the case where multiple local portions of the adhesive 20 are to be cured, infrared irradiation may be performed on multiple portions. The size, number, and position of the local portion may be appropriately determined based on the shape, size, area, shape, and coating amount of the adhesive 20 of the component 30. In addition, the area of ​​the local portion of the adhesive (the total area when multiple local portions are formed) is preferably 0.5% to 20% of the total area of ​​the adhesive applied in the configuration step (S11), and may preferably be 3% to 15%. By making the amount of the local portion of the adhesive within the upper range, the first curing step (S12) can be performed as quickly as possible, and at the same time, the amount of adhesive cured in the second curing step (S13) described later can be fully ensured, so that sufficient bonding strength between the component 30 and the vehicle window glass 10 can be obtained.

[0042] In the first curing step (S12), the output power of the infrared irradiation for curing a local part of the adhesive 20 can be preferably 20W or more and 100W or less. In the case where the irradiation means 80 is a near-infrared or short-wavelength infrared heater, the distance from the opening of the heater to the irradiation surface (or the focal distance) can be 6mm or more and 12mm or less. In addition, in the first curing step (S12), the time (curing time) for curing a local part of the adhesive can be preferably 70 seconds or less, more preferably 60 seconds or less. In addition, the curing time can be 30 seconds or more. In the case where the vehicle window glass 10 is a laminated glass, the conditions of the infrared irradiation in the first curing step (S12) are conditions under which the intermediate film 15 in the laminated glass does not undergo modification (bubbling, discoloration, deformation, etc.). Therefore, in the first curing step (S12), the temperature of the intermediate film 15 of the laminated glass is measured, and the temperature is maintained at 100°C or less, preferably 80°C or less, more preferably 50°C or less, and further preferably 30°C or less.

[0043] In addition, in this specification, the curing of the adhesive refers to the state in which the adhesive reaches equilibrium or is almost in equilibrium. Therefore, the temperature of the adhesive can be measured when irradiated with infrared rays, and the time until the temperature reaches the target temperature, that is, the curing target temperature (curing target value) and gels is used as the standard for the completion of curing. Here, the curing target temperature can be determined according to each adhesive used. For example, the gelling time of a specific adhesive at multiple temperatures can be measured, and the highest temperature within the temperature range that does not damage the adhesive 20, that is, the gelling temperature, is used as the curing target temperature. In addition, the gelling time can be measured by the gelling time A method according to JIS K 6910:2007. The curing target temperature of the adhesive is a temperature higher than normal temperature (15-25°C), for example, it can be above 40°C and below 100°C.

[0044] After the first curing step (S12), the second curing step (S13) is entered. In the second curing step (S13), the portion other than the local portion of the adhesive 20 cured in the first curing step (S12), that is, the main portion, is cured. Thus, the adhesive 20 is cured as a whole, and the component 30 is bonded to the vehicle window glass 10 as a whole by the adhesive 20, so that the vehicle window glass with component 1 ( Figure 1 ).

[0045] The specific method of the second curing step (S13) is not particularly limited. For example, a known method such as placing the adhesive to cure the main part of the adhesive can be adopted. In the case of curing the main part of the adhesive by placing it, the placement environment, specifically the temperature and / or humidity, can be appropriately adjusted.

[0046] In addition, in the second curing step (S13), curing can also be promoted by heating the main part of the adhesive 20. In order to cure the main part of the adhesive 20 in the second curing step (S13), for example, irradiation with near-infrared to short-wavelength infrared rays, such as halogen lamp heaters (halogen wide-width heaters, halogen spot heaters, halogen line heaters, etc.), lasers, induction heating, ovens, hot air, etc. can also be used. Therefore, a halogen heater can be used in the first curing step (S12) and the second curing step (S13) and the irradiation conditions can be changed in the two steps. Thereby, only one device needs to be set up during the entire process of the first curing step (S12) and the second curing step (S13), and there is no need to prepare devices for the two steps separately, so the manufacturing equipment is simplified and the manufacturing work is reduced.

[0047] Regardless of which method is used in the second curing step (S13), the curing time of the first curing step (S12) is shorter than the curing time of the second curing step (S13). The ratio (T1 / T2) of the curing time (T1) of the first curing step (S12) to the curing time (T2) of the second curing step (S13) can be greater than 0.2 and less than 0.8. However, the curing time per unit amount of the adhesive in the first curing step (S12) is longer than the curing time per unit amount of the adhesive in the second curing step (S13), and the adhesive is efficiently heated and cured in a short time in the first curing step. In addition, the unit amount of the adhesive refers to the unit mass or unit volume of the adhesive.

[0048] In the case where the curing of the main part of the adhesive 20 in the second curing step (S13) is performed by infrared irradiation, for example, a heat absorbing layer may be pre-provided on the main surface (the facing surface relative to the component 30) of the vehicle window glass 10, and the heat absorbing layer or its vicinity may be locally heated, and the heat is transferred to the adhesive 20, so that the main part of the adhesive 20 is heated. Thereby, even when laminated glass is used as the vehicle window glass 10, the intermediate film arranged in the laminated glass can be prevented from being modified in the second curing step (S13). The heat absorbing layer can be any layer composed of a material that can absorb heat, transfer the absorbed heat, or absorb externally supplied energy (such as light energy such as heat rays) and convert the absorbed energy into heat to obtain heat. For example, the shielding layer 50 ( Figure 1 ) is a heat absorbing layer, so in the second curing step (S13), the main part (remaining part) of the adhesive 20 can be cured by irradiating the shielding layer 50 with heat and / or light. Figure 7As shown in FIG. 1 , the infrared irradiation means 81a of the irradiation means 80a can be arranged above the shielding layer 50 to directly irradiate the shielding layer 50 with infrared rays. In this case, the output power of the infrared irradiation unit 81a in the second curing step (S13) can be 40 W to 80 W. In addition, the distance (or focal distance) from the opening of the heater to the surface of the heat absorbing layer (shielding layer 50) can be 10 mm to 30 mm.

[0049] When both the first curing step (S12, temporary fixing) and the second curing step (S13, formal fixing) are performed by infrared irradiation, the temperature rise rate per unit amount of the adhesive in the first curing step (S12) is higher than the temperature rise rate per unit amount of the adhesive in the second curing step (S13).

[0050] In addition, when the vehicle window glass 10 is a laminated glass, the second curing step (S13) is also performed in a manner that the interlayer film contained in the laminated glass does not undergo modification (bubbling, discoloration, deformation, etc.). For example, the heating in this embodiment is performed in a manner that the temperature of the interlayer film is 100° C. or less, preferably 80° C. or less, more preferably 50° C. or less, and further preferably 30° C. or less.

[0051] One embodiment of the present invention may be a vehicle window glass with a resin member manufactured by the above-mentioned manufacturing method ( Figure 1 Specifically, the vehicle window glass with a resin member is manufactured by a method including a placement step of placing a resin member on a vehicle window glass by means of an adhesive, and a first curing step of locally irradiating a non-adhesive surface of the resin member with infrared rays to partially cure the adhesive.

[0052] In addition, one embodiment is a vehicle window glass with a component formed by fixing a resin component to a vehicle window glass by an adhesive, wherein the adhesive may have a local portion and a main portion other than the local portion, and the unit area bonding strength between the resin component and the vehicle window glass across the local portion is smaller than the unit area bonding strength between the resin component and the vehicle window glass across the main portion. For example, the ratio (S1 / S2) of the bonding strength (S1) of the local portion to the bonding strength (S2) of the main portion may be greater than 0.05 and less than 0.3. Then, modification caused by infrared irradiation occurs locally on the resin component, and the modified portion is opposite to the local portion. The modification may be the above-mentioned physical modification or chemical modification or both.

[0053] The circle equivalent diameter of the local part of the above-mentioned adhesive is more than 2mm and less than 10mm. In addition, the top view area of ​​the local part (the total area when the local part is formed in multiple locations) is preferably more than 0.5% and less than 20% of the total area of ​​the adhesive used, and can be preferably more than 3% and less than 15%.

[0054] In one embodiment, the adhesive has a local portion and a main portion other than the local portion, and the hardness of the local portion is lower than the hardness of the main portion. In addition, the density of the local portion of the adhesive is lower than the density of the main portion. Further, when observing the bubbles contained in the adhesive in the window glass for a vehicle with a resin component, the total volume of the bubbles per unit volume contained in the local portion is greater than the total volume of the bubbles per unit volume contained in the main portion. The main portion may be in a state of not containing or almost containing no bubbles.

[0055] In the above-mentioned vehicle window glass with resin component, the adhesive between the resin component and the vehicle window glass can be one. In addition, the vehicle window glass with resin component can also include a double-sided tape for temporary fixing, but is preferably a double-sided tape-free structure without double-sided tape.

[0056] In addition, the resin member 30 may have a portion where a part or all of the material is removed in the thickness direction, i.e., a thickness direction material removal portion (through hole, notch, or thin-walled portion). The modified portion of the resin member 30 may overlap with the thickness direction material removal portion and / or its peripheral portion. For example, a through hole 35 ( Figure 5 In the case of a through hole 35 or a notch, the periphery of the notch is modified. In the case of a thin-walled portion formed on the resin member 30, a part or the entire thin-walled portion, and in some cases, the periphery thereof, is modified. Example

[0057] Hereinafter, the embodiments of the present invention will be described in further detail based on examples. In the present examples, under various conditions, a component was bonded to the main surface of glass by an adhesive to produce a component-attached automobile window glass and evaluate the results. Examples 1 to 6 are examples, and Examples 7 to 11 are comparative examples.

[0058] The evaluation of each case was performed as follows: <Process suitability evaluation> (Time until temporary fixation) Evaluate the time taken to achieve temporary fixation. In the case of temporary fixation by local heating of the adhesive, record the time taken for the local part of the adhesive to reach the curing target temperature and gel. The evaluation criteria are as follows: 0: 70 seconds or less ×: more than 70 seconds In addition, the curing target temperature is the required temperature that the heated adhesive should reach during the curing process. In this embodiment, in order to obtain the curing target temperature, the gel time at multiple temperatures is measured for each adhesive used, and the highest temperature within the temperature range where the adhesive or the coated body is not damaged, that is, the gel temperature, is taken as the curing target value. In addition, the gel time is measured by the gel time A method in accordance with JIS K 6910:2007.

[0059] (Additional material for temporary fixing) The necessary materials for temporary fixation are evaluated as follows: 0:No additional materials required ×: Additional materials are required Table 1 lists the quantities of additional materials in brackets.

[0060] (Time to automate difficult operations) The need for difficult automated operations was evaluated. If such operations were not necessary, it was recorded as "not necessary", and if they were necessary, it was recorded as "necessary". For example, the double-sided tape used in Example 7 required manual work under the current technology, and it can be said that automated pasting operations were almost impossible, so it was evaluated as "necessary".

[0061] (Can the thickness of the adhesive be controlled?) The thickness of the adhesive of the laminated glass with a bracket (the gap between the bracket and the laminated glass) was evaluated to see whether it could be controlled. In Table 1, the case where it could be controlled or adjusted in the production process was marked as "possible", and the case where it could not be controlled or adjusted was marked as "unable".

[0062] <Quality Evaluation> (Glass temperature rises) From the beginning to the end of the production of laminated glass with components, that is, during the entire process of the configuration step, the temporary fixing step and the formal fixing step, the temperature of the glass plate on the entire surface of the black ceramic near the bracket pasting position is continuously measured to obtain the maximum temperature rise (°C). Maximum temperature rise Δt max t is obtained by assuming that the temperature of the glass plate before temporary fixing (first solidification) is t0 and the maximum temperature of the glass plate is t1. 1-t0 The evaluation criteria are as follows: 0: The maximum temperature rise is above 30°C. ×: The maximum temperature rise is greater than 30°C.

[0063] (Strength immediately after temporary fixing) The shear strength of the obtained laminated glass with components was measured within 5 seconds after temporary fixing (first curing). The shear strength was measured by hanging a tensile tester (manufactured by IMADA, ZTS-500N) near the opening of the bracket, stretching at 50 mm / min, and the strength value displayed when the fracture occurred was used as the result. The evaluation criteria are as follows: ○: The strength value at break is 30N or more. ×: The strength value at break is less than 30N.

[0064] (Example 1) =Configuration Steps= A laminated glass sample (100 mm × 100 mm) was prepared by bonding two glass plates with a thickness of 2 mm via a polyvinyl butyral intermediate film (0.73 mm). A shielding layer was formed on one main surface of the laminated glass sample by firing a ceramic paste. On the other hand, a sensor bracket (70 mm in total length, 50 mm in width, and an adhesive surface area of ​​approximately 2000 mm) made of polybutylene terephthalate (PBT) was prepared. 2 , a hexagonal shape with a generally circular opening for sensor mounting, and Figure 4 The bracket has a through hole with a diameter of 6 mm ( Figure 4 ).

[0065] Then, a bonding surface corresponding region corresponding to the bonding surface of the configured bracket is set within the range of the main surface of the laminated glass sample where the shielding layer is formed. The bonding surface corresponding region of the laminated glass sample is divided into three parts. Figure 5 A total of 3.6 g of a two-component modified silicone / epoxy adhesive ("MOS400" manufactured by Konishi Co., Ltd.) was applied to the same position as shown. Then, the bonding surface of the above-mentioned bracket was arranged in a manner corresponding to the bonding surface corresponding area set on the laminated glass sample. After the bracket was arranged on the laminated glass, when observed from the bracket side, it can be confirmed that the through hole of the bracket overlaps with the adhesive (the adhesive can be seen through the through hole of the bracket). In addition, the interval between the bracket and the laminated glass sample (the thickness of the sandwiched adhesive) was adjusted to about 1 mm.

[0066] = Temporary fixation (1st curing) = A short-wavelength infrared heater (halogen spot heater, "HSH-18" manufactured by Fintech Co., Ltd.) was used to irradiate light from above the position where the through hole was set. Specifically, the heater was fixed at a position where its focus coincided with the center of the through hole when viewed from above and the distance from the opening of the heater to the adhesive surface was about 9 mm (focal distance was about 9 mm), and irradiation was performed at an output power of 70 W. Irradiation was continued until the temperature of the irradiated adhesive portion (local portion) reached the curing target temperature of the adhesive used in each example and gelled.

[0067] =Full fixation (second curing)= A device equipped with a halogen heater (near infrared heater, "LHW-30" manufactured by Fintech Co., Ltd.) with a lens length of 84 mm was placed facing the shielding layer of the laminated glass, and the focal point was arranged so as to be about 5 mm away from the bracket in the plane direction of the laminated glass and the distance from the opening of the heater to the surface of the shielding layer was about 5 mm (focal length was about 5 mm), and infrared rays were irradiated at an output power of 300 W. Irradiation was continued until the temperature of the part (main part) other than the local part cured in the temporary fixing process reached the curing target temperature of the adhesive used and gelled.

[0068] (Example 2) A laminated glass with a bracket was obtained in the same manner as in Example 1 (the size and shape of the bracket were also the same as in Example 1) except that the bracket was replaced with one made of polyamide (PA).

[0069] (Example 3) A laminated glass with a frame was obtained in the same manner as in Example 1 (the size and shape of the frame were also the same as in Example 1) except that the frame was replaced with one made of polycarbonate (PC).

[0070] (Example 4) The sensor holder is mainly made of iron but the surface is coated with an epoxy resin film by cationic electrostatic coating (total length 74mm, width 3.8mm, bonding surface area 320mm 2 ), and a laminated glass with a bracket was obtained in the same manner as in Example 1. In addition, in the configuration process, a total of 0.6 g of a two-component modified silicone / epoxy adhesive ("MOS400" manufactured by Konishi Co., Ltd.) was applied to three locations in the corresponding area of ​​the bonding surface on the laminated glass sample, and the interval between the bracket and the laminated glass sample (the thickness of the sandwiched adhesive) was adjusted to be 1.2 mm. In addition, a through hole with a diameter of 6 mm was also formed on the sensor bracket used in this example. When configuring the bracket, the through hole and the adhesive were overlapped, and the focus of the light emitted by the heater for temporary fixation (first curing) was also made consistent with the center of the through hole in a top view, and the same conditions as in Example 1 were used.

[0071] (Example 5) A laminated glass with a frame was obtained in the same manner as in Example 1 except that the adhesive was entirely replaced with a two-component polyurethane adhesive (“WS222 / B1” manufactured by Sika-Yokohama Rubber Co., Ltd.).

[0072] (Example 6) A laminated glass with a frame was obtained in the same manner as in Example 1, except that the adhesive was replaced entirely with a one-component thermosetting polyurethane adhesive ("Penguin Cement #8800" manufactured by SUNSTAR Corporation) and a primer ("SC-241" manufactured by SUNSTAR Corporation) was applied to the bonding surface of the glass before applying the adhesive.

[0073] (Example 7) Instead of temporarily fixing by partially solidifying the applied adhesive, double-sided tape is used as a temporary fixing means. Specifically, after applying a two-component modified silicone / epoxy adhesive ("MOS400" manufactured by Konishi Co., Ltd.) in the same manner as in Example 1 in the area corresponding to the bonding surface set on the main surface of the laminated glass, double-sided tape is affixed at a position that does not overlap with the application position of the adhesive in the area corresponding to the bonding surface, and the bracket is configured so that the bonding surface of the bracket corresponds to the area corresponding to the bonding surface. The other methods are the same as in Example 1 to obtain a laminated glass with a bracket. The spacing between the bracket and the laminated glass sample is equal to the thickness of the double-sided tape (1.2 mm).

[0074] (Example 8) Instead of temporarily fixing by partially solidifying the applied adhesive, an instant adhesive is used as a temporary fixing means. Specifically, after applying a two-component modified silicone / epoxy adhesive ("MOS400" manufactured by Konishi Co., Ltd.) in the bonding surface corresponding area set on the main surface of the laminated glass, an instant adhesive ("ARONALPHA EXTRA" manufactured by Simedin Co., Ltd.) is applied in a manner that does not overlap with the adhesive in the bonding surface corresponding area, and the bracket is configured so that the bonding surface of the bracket corresponds to the bonding surface corresponding area. The other methods are the same as in Example 1 to obtain a laminated glass with a bracket. If there is a gap between the bracket and the laminated glass sample, the instant adhesive cannot be cured, so it is produced without a gap.

[0075] (Example 9) After the bracket is placed on the laminated glass sample by adhesive, it is placed in an environment of room temperature (temperature 23±3°C) and humidity 50-70% for 168 hours. In other words, temporary fixation (first curing) is not performed, and formal fixation (second curing) is performed by leaving it at room temperature.

[0076] (Example 10) An attempt was made to temporarily fix (first cure) the adhesive by using an oven ("PV-222" manufactured by ESPEC Co., Ltd.) instead of the short-wavelength infrared heater used in Example 1, but local curing could not be achieved and the adhesive as a whole reached the curing target temperature. As a result, only formal fixing (second cure) was performed by using an oven without temporary fixing (first cure).

[0077] (Example 11) An attempt was made to use a hot air heater ("SAHD-15S" manufactured by Fintech Co., Ltd.) to replace the short-wavelength infrared heater used for temporary fixation (first cure) for temporary fixation (first cure), but local curing could not be achieved and the adhesive as a whole reached the curing target temperature (described later). As a result, only formal fixation (second cure) was performed using a hot air heater without temporary fixation (first cure).

[0078] [Table 1]

[0079] As shown in Table 1, it can be seen that in Examples 1 to 7 in which temporary fixing is performed by partially curing the adhesive, temporary fixing can be performed without requiring additional materials for temporary fixing and with less labor required for the operation.

[0080] The present invention has been described above based on the embodiments and examples, but the present invention is not limited to these embodiments and examples. In addition, the above embodiments can be variously changed, modified, replaced, added, deleted and combined within the scope of the claims, which all belong to the technical scope of the present invention. Explanation of symbols

[0081] 1 Window glass for vehicles with components 10 Vehicle window glass 11.12 Glass Plate 15 Intermediate film 20 Adhesive 30 Resin components 31 Bonding surface of resin components 32 Non-bonding surface of resin components 35Through hole (material removal in thickness direction) 50 shielding layers 80, 80a irradiation method 81, 81a Infrared irradiation unit 85, 85a power supply and control unit.

Claims

1. A method for manufacturing a window glass for a vehicle with a resin member, comprising: a step of placing the resin member on the vehicle window glass by means of an adhesive, and A first curing step is to partially cure the adhesive by partially irradiating the non-adhesive surface of the resin member with infrared rays.

2. The method for manufacturing a vehicle window glass with a resin member according to claim 1, The method further comprises a second curing step of curing a main portion of the adhesive other than the local portion. The curing time per unit amount of the adhesive in the first curing step is longer than the curing time per unit amount of the adhesive in the second curing step.

3. The method for producing a vehicle window glass with a resin member according to claim 1 or 2, wherein: The irradiation diameter of the infrared ray is greater than 2 mm and less than 10 mm.

4. The method for manufacturing a vehicle window glass with a resin member according to claim 3, wherein: The infrared rays are near infrared rays.

5. The method for producing a vehicle window glass with a resin member according to claim 1 or 2, wherein: The amount of the local portion cured in the first curing step is 0.5% to 20% of the total amount of the adhesive.

6. The method for producing a vehicle window glass with a resin member according to claim 1 or 2, wherein: The irradiation causes modification of the resin member.

7. The method for manufacturing a vehicle window glass with a resin member according to claim 6, wherein: The resin member has a portion where a part or all of the material is removed in the thickness direction, that is, a thickness direction material removal portion. The modification occurs by irradiating the thickness-direction material removal portion with the infrared ray.

8. The method for producing a vehicle window glass with a resin member according to claim 1 or 2, wherein: The resin member is a member for mounting an in-vehicle instrument.

9. A vehicle window glass with a resin member, The present invention is a vehicle window glass with a component in which a resin component is fixed to a vehicle window glass by an adhesive, wherein: The adhesive has a local portion and a main portion other than the local portion, The bonding strength per unit area between the resin member and the vehicle window glass through the partial portion is smaller than the bonding strength per unit area between the resin member and the vehicle window glass through the main portion. The resin member is locally modified by infrared irradiation. The modified portion faces the local portion.

10. The vehicle window glass with a resin member according to claim 9, wherein In a plan view, the circle equivalent diameter of the local portion is greater than 2 mm and less than 10 mm.

11. The vehicle window glass with a resin member according to claim 10, wherein: The resin member has a portion where a part or all of the material is removed in the thickness direction, that is, a thickness direction material removal portion. The modified portion overlaps with the thickness-direction material removal portion and / or its peripheral portion.

12. The vehicle window glass with a resin member according to claim 9 or 10, wherein: The resin member is a member for mounting an in-vehicle instrument.

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