JP7188132B2 - 車両用構造体の製造方法、及び保護フィルム付き透明基板の製造方法 - Google Patents
車両用構造体の製造方法、及び保護フィルム付き透明基板の製造方法 Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/001—General methods for coating; Devices therefor
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J5/00—Adhesive processes in general; Adhesive processes not provided for elsewhere, e.g. relating to primers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J1/00—Windows; Windscreens; Accessories therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/002—Pretreatement
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
- B29C63/0004—Component parts, details or accessories; Auxiliary operations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
- B29C63/02—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using sheet or web-like material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
- B32B17/10036—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
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- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
- B32B17/10128—Treatment of at least one glass sheet
- B32B17/10155—Edge treatment or chamfering
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/10165—Functional features of the laminated safety glass or glazing
- B32B17/1033—Laminated safety glass or glazing containing temporary protective coatings or layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/10165—Functional features of the laminated safety glass or glazing
- B32B17/10339—Specific parts of the laminated safety glass or glazing being colored or tinted
- B32B17/10348—Specific parts of the laminated safety glass or glazing being colored or tinted comprising an obscuration band
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
- B32B17/10761—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing vinyl acetal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/10807—Making laminated safety glass or glazing; Apparatus therefor
- B32B17/10816—Making laminated safety glass or glazing; Apparatus therefor by pressing
- B32B17/10825—Isostatic pressing, i.e. using non rigid pressure-exerting members against rigid parts
- B32B17/10834—Isostatic pressing, i.e. using non rigid pressure-exerting members against rigid parts using a fluid
- B32B17/10844—Isostatic pressing, i.e. using non rigid pressure-exerting members against rigid parts using a fluid using a membrane between the layered product and the fluid
- B32B17/10853—Isostatic pressing, i.e. using non rigid pressure-exerting members against rigid parts using a fluid using a membrane between the layered product and the fluid the membrane being bag-shaped
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
- B32B27/365—Layered products comprising a layer of synthetic resin comprising polyesters comprising polycarbonates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J1/00—Windows; Windscreens; Accessories therefor
- B60J1/001—Double glazing for vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J1/00—Windows; Windscreens; Accessories therefor
- B60J1/20—Accessories, e.g. wind deflectors, blinds
- B60J1/2094—Protective means for window, e.g. additional panel or foil, against vandalism, dirt, wear, shattered glass, etc.
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2203/00—Other substrates
- B05D2203/30—Other inorganic substrates, e.g. ceramics, silicon
- B05D2203/35—Glass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2400/00—Presence of inorganic and organic materials
- C09J2400/10—Presence of inorganic materials
- C09J2400/14—Glass
- C09J2400/143—Glass in the substrate
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- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Laminated Bodies (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Surface Treatment Of Glass (AREA)
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Description
まず、本発明の一実施形態により製造される車両用構造体について説明する。図1A及び図1Bに、車両用構造体の一例として、自動車のフロントガラスである透明基板と、車両ボディである被着体とが接着されてなる構造体を概略的に示す。図1Aは、フロントガラスを車内面側から見た平面図であり、図1Bは、図1AのI-I線断面図である。
次に、本実施形態を用いた車両用構造体の製造フローの概略を説明する。図2に、製造フローの一例を概略的に示す。本例による車両構造体の製造フローは、大きく分けて、車両用透明基板を生産する基板生産工程S1と、当該基板生産工程によって生産されたえ車両用透明基板を被着体に取り付ける取付け工程S2とからなる。取付け工程S1は、後述のように、接着剤を用いて透明基板を被着体に接着させる工程である。
図2に示すように、基板生産工程S1においては、まず、入手した車両用透明基板の素板を、切り又は折りによって所望の外形とし、さらに面取り加工等をする(S11)。その後、透光を遮蔽することのできる光遮蔽膜を所定の位置にプリントし焼成する(S12)。その後、透明基板をリング型に載置した後に加熱して軟化させ、重力によってリング型に沿った形状に曲げる方法(重力方法)や、リング型とプレス型との間に挟んで押圧して曲げる方法(プレス方法)により、透明基板が湾曲を有するようにする。
基板生産工程S1の後には、透明基板と被着体とを接着させる取付け工程S2が続く。上述のように、取付け工程S2は、基板生産工程S1を行う場所と同じ加工場所で行ってもよいし、基板生産工程S1を行う場所とは違う加工場所で行うこともできる。
上述のように、基板生産工程S1においては、少なくとも、透明基板の車内面側の周縁における接着剤配置予定領域を覆うように、保護フィルムを貼り付けることができる(S15)。
接着剤配置予定領域とは、取付け工程S2における透明基板と被着体との接着の際に、接着剤が配置される領域を指す。また、接着剤配置予定領域は、接着剤を配置して被着体を配置した後、透明基板と被着体とを押し付けた場合等に接着剤が潰れて面方向に広がるような場合には、広がった後に接着剤が占めることになる領域であってもよい。このような接着剤配置予定領域は、被着体が接着される領域(透明基板と被着体との接着後に、透明基板上で被着体の接着面が占める領域、被着体接着予定領域ともいう)に重なっていてよい。すなわち、接着剤配置予定領域は、被着体接着予定領域に含まれていてもよいし、被着体接着予定領域とほぼ等しくてもよい。
図4に、図3Aの透明基板10に、保護フィルム30が貼り付けられた状態の図を示す。図4も、図3Aと同様、フロントガラス(透明基板)10の車内面側から見た平面図である。
11 第1基板
12 第2基板
13 中間膜
15 光遮蔽膜
18、18a~18e 被着体接着予定領域
19a、19c 接着剤配置予定領域
30、30A、30B 保護フィルム
50 被着体
50 ボディ
70 接着剤
81、82 プライマー
100 車両用構造体
Claims (13)
- 透明基板と被着体とが接着剤によって接着されてなる車両用構造体の製造方法であって、
透明基板の車内面側の周縁における接着剤配置予定領域を覆うように、前記透明基板の周縁に沿ってリング状に保護フィルムを貼り付け、
前記保護フィルムを剥がした後に前記接着剤配置予定領域に接着剤を配置し、前記接着剤を介して前記透明基板と前記被着体とを接着する、製造方法。 - 前記保護フィルムは複数のフィルムからなり、当該複数のフィルムは、平面視で並置される、請求項1に記載の製造方法。
- 前記透明基板の車内面の周縁又は前記透明基板内の周縁に沿って、光遮蔽膜が設けられており、
前記接着剤配置予定領域は、平面視で前記光遮蔽膜に含まれる、請求項1又は2に記載の製造方法。 - 前記透明基板は、第1基板と第2基板とが貼り合されてなる合わせガラスであり、
前記光遮蔽膜は、前記第1基板と前記第2基板のいずれか一方、または両方に設けられている、請求項3に記載の製造方法。 - 前記透明基板は、車外面側に凸となるよう湾曲している、請求項1から4のいずれか一項に記載の製造方法。
- 前記被着体は金属製又は樹脂製である、請求項1から5のいずれか一項に記載の製造方法。
- 前記被着体は、車両ボディ、車載機器用支持体、ミラーベース、モール、ピンの1以上である、請求項1から6のいずれか一項に記載の製造方法。
- 前記透明基板の生産後、前記透明基板を清浄化する処理を行わない、請求項1から7のいずれか一項に記載の製造方法。
- 前記接着剤配置予定領域に前記接着剤を配置する前に、前記貼り付けられた保護フィルムは全て除去される、請求項1から8のいずれか一項に記載の製造方法。
- 前記保護フィルムは、破断可能な脆弱部を備えた1枚のフィルムから構成され、且つ前記保護フィルムを剥がす際に、前記脆弱部で破断させて複数のフィルムに分割できる、請求項1から9のいずれか一項に記載の製造方法。
- 前記保護フィルムは、透明又は無色である、請求項1から10のいずれか一項に記載の製造方法。
- 前記保護フィルムは、不透明又は色付けされている、請求項1から10のいずれか一項に記載の製造方法。
- 車内面側の周縁における接着剤配置予定領域に配置される接着剤によって被着体と接着して車両用構造体となる透明基板と、前記接着の前に剥がされる保護フィルムとを有する、保護フィルム付き透明基板の製造方法であって、
前記接着剤配置予定領域を覆うように、前記透明基板の前記周縁に沿ってリング状に保護フィルムを貼り付ける、製造方法。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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JP2019011231A JP7188132B2 (ja) | 2019-01-25 | 2019-01-25 | 車両用構造体の製造方法、及び保護フィルム付き透明基板の製造方法 |
EP20152905.4A EP3689989B1 (en) | 2019-01-25 | 2020-01-21 | Method for producing vehicular structure |
US16/749,783 US11731899B2 (en) | 2019-01-25 | 2020-01-22 | Method for producing vehicular structure and method for producing protective film-attached transparent substrate |
CN202010074975.4A CN111483297B (zh) | 2019-01-25 | 2020-01-22 | 车辆用结构体的制造方法和带保护膜透明基板的制造方法 |
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CN112223987A (zh) * | 2020-10-19 | 2021-01-15 | 长春一汽富维东阳汽车塑料零部件有限公司 | 一种汽车前风挡玻璃及其前风挡玻璃造型型面校核标准方法 |
WO2022260041A1 (ja) * | 2021-06-10 | 2022-12-15 | Agc株式会社 | 金属部品付き車両用窓ガラスの製造方法 |
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CN113320358B (zh) * | 2021-06-25 | 2022-07-01 | 长春工程学院 | 一种智能汽车安全驾驶装置 |
US11773011B1 (en) | 2022-07-08 | 2023-10-03 | Agc Automotive Americas Co. | Glass assembly including a conductive feature and method of manufacturing thereof |
US12090729B2 (en) | 2022-07-08 | 2024-09-17 | Agc Automotive Americas Co. | Glass assembly including an opaque boundary feature and method of manufacturing thereof |
US12071365B2 (en) | 2022-07-08 | 2024-08-27 | Agc Automotive Americas Co. | Glass assembly including a performance-enhancing feature and method of manufacturing thereof |
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JP2010121044A (ja) | 2008-11-19 | 2010-06-03 | Nitto Denko Corp | 表面保護シートおよびその利用 |
WO2018092779A1 (ja) | 2016-11-15 | 2018-05-24 | 日本板硝子株式会社 | 防曇積層体及び防曇シートの貼付方法 |
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US20200239358A1 (en) | 2020-07-30 |
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