Manufacturing method for window glass for vehicle with parts

Abstract

This method for manufacturing automotive window glass with an attached part comprises: disposing a part via an adhesive on the principal surface of a glass plate provided with a heat-absorbing layer; locally heating the heat-absorbing layer; and heating and curing the adhesive through the transfer of heat from the heat-absorbing layer to the adhesive.

Description

[Technical Field]

[0001] The present invention relates to a method for manufacturing a window glass for a vehicle with a component attached thereto. [Background technology]

[0002] A structure in which components such as a mirror base and a bracket are adhered to the main surface of a vehicle window glass with an adhesive is known. The manufacture of such a vehicle window glass with components generally includes a curing process for sufficiently hardening the adhesive after the components are attached to the vehicle window glass via the adhesive.

[0003] Various methods have been investigated to shorten the time required for the curing process. For example, Patent Document 1 describes a method in which the bonding surfaces of the adherend and the automotive glass are bonded together using an adhesive, and then the adhesive is cured using a superheated steam generator. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-55741 Summary of the Invention [Problem to be solved by the invention]

[0005] Patent Document 1 describes an advantage of the invention in that it can cure adhesives in a short time without requiring large-scale equipment. However, the superheated steam boiler described in Patent Document 1 must be large enough to cover the entire adherend, and other equipment such as a boiler and heater is also required. Therefore, the equipment remains large and complex. Furthermore, because high-temperature steam must be sprayed, there are concerns about misalignment and deformation of the adhesive when bonding small parts.

[0006] In view of the above, an object of one aspect of the present invention is to provide a method for manufacturing a vehicle window glass with a component attached thereto in a short time and in a smaller space. [Means for solving the problem]

[0007] In order to solve the above problem, one aspect of the present invention is a method for manufacturing a vehicle window glass with a component, in which a component is placed on a main surface of a glass plate having a heat absorption layer via an adhesive, the heat absorption layer is locally heated, and the heat from the heat absorption layer is transferred to the adhesive, thereby heating and hardening the adhesive. [Effects of the Invention]

[0008] According to one aspect of the present invention, a vehicle window glass with a component attached thereto can be manufactured in a short time and in a smaller space. [Brief explanation of the drawings]

[0009] [Figure 1] 1 shows an example of a vehicle window glass with a component according to an embodiment of the present invention. [Figure 2] FIG. 2 is a partially enlarged cross-sectional view of line II in FIG. [Figure 3] 1A to 1C are diagrams illustrating an example of a heating process in the manufacture of a vehicle window glass with a component according to an embodiment of the present invention. [Figure 4] FIG. 4 is an enlarged cross-sectional view taken along line II-II in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding components are denoted by the same reference numerals, and the description thereof may be omitted.

[0011] FIG. 1 is a view of an example of a vehicle window glass 1 with a component manufactured according to this embodiment, as seen from the vehicle interior side. FIG. 2 is a partially enlarged cross-sectional view taken along line II in FIG. 1. As shown in FIGS. 1 and 2, a component 30 is adhered to a main surface of a vehicle window glass 10, and an adhesive 20 is used for the adhesion. In the illustrated example, the component 30 is a resin bracket, and the resin bracket is adhered to the upper part of the vehicle interior surface of the vehicle window glass 10, near the center in the left-right direction (FIG. 1). Furthermore, although the vehicle window glass 10 in FIG. 1 is a windshield, the vehicle window glass in this embodiment may also be a rear window, a side window, a roof glass, etc.

[0012] As shown in Figures 1 and 2, a heat absorption layer 50 is formed on the periphery of a vehicle window glass 10. As will be described later, the configuration of the heat absorption layer 50 is not particularly limited as long as it is a layer with high heat absorption properties, but it is preferably a shielding layer (black ceramic layer) formed by applying and firing a black, gray, or dark brown ceramic paste (glass paste). The shielding layer functions to protect sealants and the like that attach and hold the vehicle window glass to the vehicle body from ultraviolet rays and the like. In the example of Figures 1 and 2, the adhesive 20 is in contact with the heat absorption layer 50.

[0013] The vehicle window glass 10 used in this embodiment may be a glass sheet such as soda lime silicate glass, aluminosilicate glass, borate glass, lithium aluminosilicate glass, or borosilicate glass. The glass sheet may be formed by any method, but glass formed by the float process is preferred. The glass sheet may be untempered, or may be tempered glass that has been tempered by air-cooling or chemical strengthening. Untempered glass is formed by shaping molten glass into a sheet and slowly cooling it. Tempered glass is formed by forming a compressive stress layer on the surface of untempered glass. When the tempered glass is air-cooled tempered glass, the glass surface may be strengthened by rapidly cooling a heated glass sheet from a temperature near its softening point, thereby generating compressive stress on the glass surface due to the temperature difference between the glass surface and the interior of the glass. On the other hand, when the tempered glass is chemically strengthened glass, the glass surface may be strengthened by generating compressive stress on the glass surface using an ion exchange method or the like. Furthermore, the vehicle window glass is preferably transparent, but may also be colored glass to the extent that transparency is not impaired. The shape of the glass is not particularly limited to a rectangular shape, and may be processed into various shapes. In addition, the glass plate used for the vehicle window glass may be bent and curved. As the bending method, gravity forming, press forming, or the like is used.

[0014] The vehicle window glass 1 may be a single pane of glass or a laminated glass (FIG. 2). A laminated glass is a glass formed by bonding together a plurality of glass sheets 11, 12 with an interlayer film 15 interposed therebetween. The glass sheets used in the laminated glass are also the glass described above.

[0015] In laminated glass, the material of the interlayer film 15 (FIG. 2) disposed between the multiple glass sheets 11 and 12 is not particularly limited, but a thermoplastic resin is preferred. Specific examples of interlayer film materials include conventionally used thermoplastic resins 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, and ionomer resins. Resin compositions containing modified hydrogenated block copolymers, as described in Japanese Patent No. 6065221, are also suitable. Among these, plasticized polyvinyl acetal resins are preferred because of their excellent balance of properties such as transparency, weather resistance, strength, adhesive strength, penetration resistance, impact energy absorption, moisture resistance, heat insulation, and sound insulation. The above thermoplastic resins may be used alone or in combination. The term "plasticized" in the plasticized polyvinyl acetal resin means that the resin has been plasticized by adding a plasticizer. The same applies to other plasticized resins.

[0016] The interlayer film may be a plasticizer-free resin, such as an ethylene-vinyl acetate copolymer resin. Examples of the polyvinyl acetal resin include polyvinyl formal resin obtained by reacting polyvinyl alcohol (PVA) with formaldehyde, polyvinyl acetal resin in the narrow sense obtained by reacting PVA with acetaldehyde, and polyvinyl butyral resin (PVB) obtained by reacting PVA with n-butylaldehyde. PVB is particularly preferred because of its excellent balance of properties such as transparency, weather resistance, strength, adhesive strength, penetration resistance, impact energy absorption, moisture resistance, heat insulation, and sound insulation. The above resins may be used alone or in combination.

[0017] In the case of laminated glass, the overall thickness of the vehicle window glass (including the thickness of the interlayer film) may be 2.3 mm or more and 8.0 mm or less. Furthermore, the thickness of each of the multiple glass sheets that make up the laminated glass may be 0.5 mm or more and 3.5 mm or less. The thicknesses of the multiple glass sheets may be the same or different. Furthermore, the thickness of the glass sheet on the vehicle interior side may be 0.5 mm or more and 2.3 mm or less.

[0018] On the other hand, the component 30 is not particularly limited as long as it is a component that can be attached to any location on the main surface of the vehicle window glass 10. The component 30 may be a mirror base for attaching an inner mirror (the example in FIG. 1), a bracket for attaching a sensor, a camera, or the like, a molding, a protector, a pin, a holder, a hinge, or the like.

[0019] The material of the part 30 is not particularly limited and may be metal, resin, a combination of metal and resin, or other materials. The metal used for the part 30 may be a single metal or an alloy, such as aluminum, zinc, iron, or stainless steel. The resin used for the part 30 may be a thermosetting 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), and epoxy (EP).

[0020] As described above, the heat absorption layer 50 provided on the glass plate of a vehicle window glass is a layer made of a material that can absorb heat and transmit the absorbed heat, or absorb energy supplied from an external source (e.g., light energy such as heat rays) and convert the absorbed energy into heat to obtain heat. The heat obtained by the heat absorption layer 50 can be transmitted to the adhesive 20. In the example shown in FIGS. 1 and 2, the heat absorption layer 50 is a shielding layer (black ceramic layer), but the heat absorption layer 50 is not limited to a shielding layer, and its configuration is not limited. For example, the heat absorption layer 50 may be a layer containing a highly heat-absorbing component, such as a metal component, a so-called low-emissivity film (Low-E film), or a conductive layer formed by applying and baking a conductive paste containing metal particles such as silver. More specifically, the heat absorption layer 50 may be a layer made of a metal (simple substance or alloy) or a layer containing metal particles, and in this case, the metal used may be silver, tin, zinc, titanium oxide, or the like. The thickness of the heat absorption layer 50 is not particularly limited, and may be any thickness that has heat absorption properties and can transfer the obtained heat to the adhesive.

[0021] The adhesive used in this embodiment is not particularly limited as long as it is an adhesive that can be used to bond window glass and components, and may be epoxy-based, urethane-based, silicone-based, modified silicone-based, melamine-based, phenol-based, acrylic-based, or the like. It may also be a one-component or two-component adhesive. The adhesive is preferably a heat-triggered adhesive (i.e., one whose curing is accelerated by heat, such as thermal cationic or thermal radical heating), or contains a thermosetting polymer as its main component. The adhesive may be a heat-curing type (one that requires heating for normal use) or a room-temperature curing type (one that undergoes a curing reaction by leaving it alone for normal use, and does not require heating). However, a room-temperature curing adhesive is preferably used in the method of this embodiment. Specific examples of adhesives include modified silicone / epoxy adhesives, two-component urethane adhesives, one-component heat-curing urethane adhesives, and second-generation acrylic adhesives (SGA).

[0022] This embodiment is a method for manufacturing a vehicle window glass 1 with a component as shown in FIGS. 1 and 2 , in which a heat absorption layer 50 near the component 30 is locally heated when the component 30 is bonded to a main surface of the vehicle window glass 10 using an adhesive 20. In this specification, locally heating a predetermined portion does not mean heating the entire structure combined with the predetermined component, but means locally raising the temperature of the predetermined portion. For example, when the temperatures of the predetermined portion and other portions or components are measured as the predetermined portion is heated, this means that the temperature of the predetermined portion rises first, or that the temperature rise rate of the predetermined portion is rapid. Therefore, the heat absorption layer 50 can be locally heated by facing or contacting a heating means with the heat absorption layer 50 near the adhesive 20 or the component 30.

[0023] In this embodiment, localized heating of the heat absorption layer 50 indirectly heats the adhesive, hardening it and allowing the adhesive to exert its adhesive function. This method involves placing components on a portion of the main surface of the window glass via the adhesive, and then locally heating the heat absorption layer 50 near the adhesive. This method does not heat the entire structure by, for example, heating the atmosphere surrounding the structure formed by placing components on the main surface of the window glass via the adhesive. Therefore, for example, a housing or the like is not required to cover the components. Furthermore, while a heating device can be large to heat the relatively large volume of atmosphere within such a housing, this embodiment does not require such a large device, allowing for a compact manufacturing device and reduced costs.

[0024] Furthermore, in the method of this embodiment, the adhesive is heated by locally heating the heat absorption layer of the vehicle window glass, so the temperature of the adhesive can be raised in a short time. This reduces the time required to raise the temperature of the adhesive to the target temperature (target temperature), thereby improving the manufacturing efficiency of vehicle window glass with components. Furthermore, since the temperature rise of parts other than the adhesive is suppressed, parts other than the adhesive can be prevented from being damaged by heat.

[0025] In this embodiment, the heating is preferably carried out in the absence of wind. In this specification, "in the absence of wind" means that there is no means for generating a flow of air or other gases (including water vapor) that will impinge on the structure consisting of the window glass 10 and the component 30 arranged via the adhesive 20. Because the heating is carried out in the absence of wind, it is possible to prevent misalignment when attaching small components, and there is little or no change in the shape of the adhesive, making it highly versatile.

[0026] An example of the heating means used in the manufacturing method according to the present embodiment is shown in Fig. 3. Fig. 4 is a cross-sectional view taken along line II-II in Fig. 3.

[0027] In the manufacturing method according to this embodiment, first, a component 30 is placed on a main surface of a vehicle window glass 10 via an adhesive 20. According to the example shown in FIGS. 3 and 4 , the adhesive 20 is placed on a heat absorption layer (shielding layer) 50 formed on the vehicle interior surface of the vehicle window glass 10, and the component 30 is placed on the adhesive 20. That is, the adhesive 20 is applied in contact with the heat absorption layer 50 within the area where the heat absorption layer 50 is formed in a plan view. However, the entire adhesive 20 does not have to be in contact with the heat absorption layer 50; only a portion of the adhesive 20 may be in contact with the heat absorption layer 50, or the adhesive 20 and the heat absorption layer 50 may not be in contact with each other. However, in this embodiment, the adhesive 20 is cured by transferring heat obtained by the heat absorption layer 50 to the adhesive 20, so the adhesive 20 and the heat absorption layer 50 may be at least close to each other, and preferably in contact with each other. Furthermore, it is preferable that the entire adhesive 20 be in contact with the heat absorption layer 50.

[0028] When the component 30 is disposed on the vehicle window glass 10 via the adhesive 20, the adhesive may be applied to the entire bonding surface of the component 30 (the surface facing the window glass 10), or may be applied partially. The thickness of the adhesive 20 before heating is preferably 0.1 mm or more and 4 mm or less. Furthermore, before contacting the component 30 with the adhesive 20, a primer may be applied to the bonding surface of the component 30 as needed, and before contacting the window glass 10 with the adhesive 20, a primer may be applied to the bonding surface of the window glass 10 as needed.

[0029] The localized heating (local heating) of the heat absorption layer 50 preferably utilizes heat transfer by radiation and / or conduction. Among these, a means for irradiating electromagnetic waves of a predetermined wavelength is preferred because it allows non-contact heating of the heat absorption layer 50 and is therefore suitable for components with complex surface shapes. Furthermore, a heating means for irradiating near-infrared rays (wavelength 780 nm or more and 2500 nm or less), such as a halogen lamp heater (halogen point heater, halogen line heater, etc.), allows the electromagnetic wave energy to be effectively absorbed by the heat absorption layer, thereby enabling concentrated heating of the heat absorption layer and preventing damage to areas other than the heat absorption layer. In this embodiment, induction heating, laser, hot air, etc. can also be used for heating.

[0030] Although the heating method in this embodiment does not exclude the use of hot water or steam, heating can be performed efficiently without using hot water or steam. Therefore, a drying step or the like is not required, and the adhesive can be cured more easily than in conventional methods in which the adhesive-containing part is immersed in water or placed in superheated steam.

[0031] In the examples shown in FIGS. 3 and 4, a halogen line heater device is shown as the heating means 80. The halogen line heater device may include a halogen line heater main body 81 and a power supply / control unit 85. The halogen line heater is a heater that can concentrate the emitted infrared rays into a linear shape. It is preferable to use one with a focal width of 1 mm or more and 10 mm or less. In addition, it is preferable to install the heater so that the focal point is located on the surface of the heat absorption layer 50 or within the heat absorption layer 50.

[0032] When the heat absorption layer 50 is heated and its temperature rises, the heat from the heat absorption layer 50 is transferred to the adhesive 20 located near or in contact with the heat absorption layer 50. This allows the temperature of the adhesive 20 to be preferentially increased, and the curing speed to be increased. At this time, even if the component 30 is made of a material that is not heat-resistant, such as a resin, the effect of heat on the component 30 that is not in contact with the heat absorption layer 50 can be suppressed.

[0033] Furthermore, when the vehicle window glass 10 is laminated glass, heating in this embodiment can be performed without causing denaturation (such as foaming, discoloration, or deformation) of the interlayer film included in the laminated glass. For example, heating in this embodiment can be performed so that the temperature of the interlayer film is 100°C or less, preferably 80°C or less, and more preferably 50°C or less. Conventional methods of heating the bonding area using superheated steam inevitably heat areas other than the adhesive when attempting to raise the temperature of the adhesive. In such cases, if the vehicle window glass is laminated glass, the resin constituting the interlayer film may be denatured or the air trapped inside may expand, damaging the interlayer film and causing problems such as foaming, peeling, and discoloration within the laminated glass. In contrast, the method of locally heating the heat absorption layer, as in this embodiment, can rapidly heat the adhesive while preventing excessive heating of the interlayer film. This allows components to be bonded in a short time without damaging the laminated glass.

[0034] In this embodiment, localized heating of the heat absorption layer 50 can be performed so that the temperature of the adhesive reaches a target temperature (target curing temperature) for curing the adhesive. The target curing temperature can be determined based on the type of adhesive, the type and material of the part, the configuration of the vehicle window glass, the desired degree of curing of the adhesive, and the like. The target curing temperature may be determined, for example, by measuring the gelling time of the adhesive at multiple temperatures. The target curing temperature of the adhesive is a temperature higher than room temperature (15 to 25°C), and may be, for example, 40°C or higher and 100°C or lower.

[0035] In addition, in the heating in this embodiment, the temperature that the heat absorption layer 50 reaches can be 100° C. or lower, preferably 100° C. or lower, and more preferably 80° C. or lower.

[0036] In this embodiment, the adhesive strength between the part and the vehicle window glass is sufficient, and for example, an adhesive strength of 0.5 MPa or more can be achieved as measured by a tensile adhesive strength test (JIS K 6849).In addition, a good cohesive failure rate (CF rate) of 90% or more can be achieved as evaluated by a tensile adhesive strength test (JIS K 6849). [Example]

[0037] EXAMPLES Hereinafter, the embodiments of the present invention will be described in more detail based on examples. In these examples, automotive window glass with components attached thereto was produced by bonding components to the main surface of window glass with an adhesive under various conditions.

[0038] In this example, measurements and evaluations were carried out as follows: <Determining the target adhesive curing temperature (target value)> The target curing temperature is the desired temperature that the adhesive must reach during the curing process. While raising the adhesive to a high temperature in a short period of time can lead to adhesive decomposition, heating at a low temperature can result in insufficient curing and performance loss. The target temperature must also be determined taking into account the heat resistance of the adherend. In this example, the gel time for each adhesive used was measured at multiple temperatures, and the highest gel temperature within the temperature range that did not damage the adhesive or the adherend was used as the target curing temperature. The gel time was measured using a method conforming to Gel Time Method A of JIS K 6910:2007.

[0039] <Appearance evaluation> The condition of the parts was visually inspected and the condition of the parts, adhesive, and laminated glass was evaluated. If there was a change in color and / or shape compared to before the start of heating, the change was recorded as discoloration (including scorching), deformation, etc. On the other hand, if there was no change in color and / or shape compared to before the start of heating, it was evaluated as "good."

[0040] <Curing time> The time from the start of heating (from the start of operation of the heating means) until the adhesive reached the above-mentioned target curing temperature was recorded.

[0041] <Adhesion evaluation> (strength) One hour after the end of heating, the strength was measured by a method in accordance with the tensile adhesive strength test (JIS K 6849). In the case of the example in which heating was not performed (Example 9), the strength was measured one hour after the part was placed on the window glass via the adhesive.

[0042] (CF rate after hot water test) After complete curing, the specimens were immersed in hot water at 40°C for 240 hours. Evaluation was then carried out using a tensile bond strength test (JIS K 6849). The state of failure was visually observed, and the percentage of the area where the adhesive had undergone cohesive failure was taken as the cohesive failure rate (CF rate, unit: %). A CF rate of 0% means that the adhesive has not undergone cohesive failure at all and interfacial peeling has occurred, while a CF rate of 100% means that cohesive failure has occurred over the entire surface where the adhesive has been applied. The higher the CF rate, the greater the percentage of cohesive failure that occurred in the adhesive, and the better the adhesion between the part and the adhesive.

[0043] (Example 1) A laminated glass sample (100 mm x 100 mm) was prepared by laminating two 2 mm thick glass plates together with a polyvinyl butyral interlayer (0.73 mm) between them. One side of the laminated glass sample had a shielding layer formed by firing a ceramic paste. A bracket (length 80 mm, maximum width 50 mm, adhesive surface area approximately 500 mm) made of polybutylene terephthalate (PBT) was used. 2A total of 0.6 g of two-component modified silicone / epoxy adhesive ("MOS400" manufactured by Konishi Co., Ltd.) was applied to the entire adhesive surface of the bracket, and the adhesive-coated surface was placed on the surface of the laminated glass sample on which the shielding layer was formed. At this time, the thickness of the adhesive sandwiched between the bracket and the laminated glass was adjusted to 1.0 mm. The area of ​​the adhesive surface of the bracket (component) is the area of ​​the flat surface on the side facing the main surface of the window glass.

[0044] The heating means used was a device equipped with a halogen line heater (near-infrared heater, Fintech Corporation's "LHW-30") with a mirror length of 84 mm. The heater's irradiation port was positioned on the side where the bracket was provided, facing the shielding layer and spaced apart from the shielding layer. The heater was positioned so that the distance from the heater's opening to the surface facing the shielding layer was 20 mm. The focal length was 20 mm, and the focal width was 2.5 mm. The halogen line heater was positioned so that its focal position was 5 mm from the adhesive in a plan view. The halogen heater was operated under conditions of an output of 25 V and an irradiation time of 90 seconds. While measuring the temperature of the adhesive, the temperature of the shielding layer formed on the laminated glass, and the temperature of the interlayer, heating was continued using the heating means until the temperature of the adhesive reached the target curing temperature. After heating, the adhesive strength of the bonded portion of the component-attached laminated glass (component-attached automotive window glass) obtained in each example and the CF ratio after a hot water test were determined.

[0045] (Example 2) The same procedure as in Example 1 was followed except that the bracket was replaced with one made of polyamide (PA) (the size and shape of the bracket were also the same as in Example 1). The bracket was placed on the shielding layer of the laminated glass via an adhesive and heated using a halogen line heater.

[0046] (Example 3) The same procedure as in Example 1 was followed except that the bracket was replaced with one made of polycarbonate (PC) (the size and shape of the bracket were also the same as in Example 1). The bracket was placed on the shielding layer of the laminated glass via an adhesive and heated using a halogen line heater.

[0047] (Example 4) The experiment was conducted in the same manner as in Example 1, except that the adhesive was changed to a one-component heat-curing urethane adhesive (Sunstar's "Penguin Cement #8800") and a primer (Sunstar's "SC-241") was applied to the adhesive surface of the glass before applying the adhesive.

[0048] (Example 5) An experiment was carried out in the same manner as in Example 1, except that the adhesive was changed to a two-component urethane adhesive (Hysol-10FL, manufactured by Henkel Japan).

[0049] (Example 6) The same procedure as in Example 1 was followed except that the bracket was replaced with an iron one (the size and shape of the bracket were also the same as in Example 1). The bracket was placed on the shielding layer of the laminated glass via an adhesive and heated using a halogen line heater.

[0050] (Example 7) The bracket is attached to a stainless steel mirror base (length 700mm, maximum width 250mm, adhesive surface area approximately 950mm) 2 ), and a total of 1.1 g of the two-component modified silicone / epoxy adhesive used in Example 1 was applied to the entire bonding surface, and the adhesive-coated surface was placed on the side of the laminated glass sample on which the shielding layer was formed. The thickness of the adhesive sandwiched between the bracket and the laminated glass was adjusted to 1.0 mm. Heating was carried out using a halogen line heater under the same conditions as in Example 1.

[0051] (Example 8) The same procedure as in Example 1 was followed, except that no heating was performed. That is, the bracket was placed on the surface of the laminated glass sample on which the shielding layer had been formed, via the adhesive.

[0052] (Example 9) The experiment was carried out in the same manner as in Example 1, except that an oven was used instead of a halogen point heater as the heating means. The mirror base was placed on the shielding layer of the laminated glass sample via an adhesive and placed in an oven ("PV-222" manufactured by ESPEC Co., Ltd.). The oven was operated at 60°C.

[0053] (Example 10) Except for using a far-infrared heater instead of a halogen point heater as the heating means, the experiment was carried out in the same manner as in Example 1. More specifically, the heating surface of the far-infrared heater ("QFE-125" manufactured by Nippon Heater Co., Ltd.) was placed opposite the exposed surface of the mirror base at a distance of 200 mm, and the heater was operated under the conditions of an output of 125 W and a heating time of 150 seconds.

[0054] The experimental conditions and results are shown in Table 1. Examples 1 to 7 are working examples, and Examples 8 to 10 are comparative examples.

[0055] [Table 1]

[0056] As shown in Table 1, in Examples 1 to 7, in which the adhesive was indirectly heated by locally heating the shielding layer (heat absorption layer) near the component, the temperature of the adhesive reached the desired temperature (target curing temperature) in a short time, and there was no damage to parts other than the adhesive, i.e., the component itself and the laminated glass (particularly the interlayer). In addition, the adhesiveness of the component-attached automotive window glass obtained in Examples 1 to 7 was also sufficient.

[0057] On the other hand, in Example 8, which was not heated, the adhesiveness was evaluated after the same time as in Example 1, but the adhesiveness of the parts was poor. Also, in Examples 9 and 10, which were heated but did not locally heat the shielding layer, it took a long time for the adhesive temperature to reach the desired temperature. Also, in Example 10, it was found that the resin parts were deformed.

[0058] Although the present invention has been described above based on the embodiments and examples, the present invention is not limited to these embodiments and examples. Furthermore, the above embodiments can be variously changed, modified, substituted, added, deleted, and combined within the scope of the claims, and these also fall within the technical scope of the present invention.

[0059] This application claims priority to Japanese Patent Application No. 2021-097652, filed on June 10, 2021, the entire contents of which are incorporated herein by reference. [Explanation of symbols]

[0060] 1. Vehicle window glass with parts 10. Vehicle window glass 11, 12 Glass plate 15 Interlayer 20 Adhesive 30 parts 50 shielding layer 80 Heating means 81 Halogen line heater 85 Power supply and control unit

Claims

1. A method for manufacturing a window glass for a vehicle with a component, comprising: a component is placed on a main surface of a glass plate provided with a heat absorption layer via an adhesive; locally heating the heat absorption layer; transferring heat from the heat absorption layer to the adhesive to heat and cure the adhesive; The vehicle window glass is a laminated glass in which two glass plates are bonded together via an interlayer film, The method for manufacturing a window glass for a vehicle with a component, wherein the heat absorption layer is heated so that the temperature of the interlayer is 100°C or less.

2. The method for manufacturing a window glass for a vehicle with a component according to claim 1 , wherein the component is made of resin.

3. The method for manufacturing a window glass for a vehicle with a component according to claim 1 or 2, wherein the heat absorption layer is heated by radiation and / or conduction.

4. The method for manufacturing a window glass for a vehicle with a component according to claim 1 or 2, wherein the component is heated in a still air.

5. The method for manufacturing a window glass for a vehicle with a component according to claim 4, wherein the heat absorption layer is heated by using a near-infrared heater.

6. The method for manufacturing a window glass for a vehicle with a component attached thereto according to claim 1 or 2, wherein the component is a component for mounting an in-vehicle device.

7. 3. The method for manufacturing a window glass for a vehicle with a component according to claim 1, wherein the adhesive is an adhesive whose hardening is accelerated by heat.

8. 3. The method for manufacturing a window glass for a vehicle with a component according to claim 1, wherein the heat absorption layer is a fired ceramic paste film provided on the peripheral edge of the window glass for a vehicle.

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