KR20220021228A - Laminating Method for Special Film on Windshield - Google Patents

Laminating Method for Special Film on Windshield Download PDF

Info

Publication number
KR20220021228A
KR20220021228A KR1020200101812A KR20200101812A KR20220021228A KR 20220021228 A KR20220021228 A KR 20220021228A KR 1020200101812 A KR1020200101812 A KR 1020200101812A KR 20200101812 A KR20200101812 A KR 20200101812A KR 20220021228 A KR20220021228 A KR 20220021228A
Authority
KR
South Korea
Prior art keywords
bonding
film
windshield
temperature
barrier film
Prior art date
Application number
KR1020200101812A
Other languages
Korean (ko)
Inventor
신민호
Original Assignee
현대모비스 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 현대모비스 주식회사 filed Critical 현대모비스 주식회사
Priority to KR1020200101812A priority Critical patent/KR20220021228A/en
Publication of KR20220021228A publication Critical patent/KR20220021228A/en

Links

Images

Classifications

    • 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
    • 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
    • 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
    • B32B17/10899—Making laminated safety glass or glazing; Apparatus therefor by introducing interlayers 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/26—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer which influences the bonding during the lamination process, e.g. release layers or pressure equalising layers
    • 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
    • B60J1/02—Windows; Windscreens; Accessories therefor arranged at the vehicle front, e.g. structure of the glazing, mounting of the glazing
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/26—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer which influences the bonding during the lamination process, e.g. release layers or pressure equalising layers
    • B32B2037/268—Release layers
    • 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
    • B32B2457/00—Electrical equipment
    • B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
    • 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
    • B32B2605/00—Vehicles
    • B32B2605/08—Cars

Abstract

The present invention relates to a windshield glass lamination method to secure safety performance of windshield glass and windshield glass manufactured thereby. According to the present invention, the windshield glass lamination method comprises: a primary lamination process of sequentially laminating glass, a polyvinyl butyral (PVB) film, a first barrier film, a second barrier film, a PVB film, and glass and performing lamination at a primary lamination temperature and high pressure to manufacture a primary assembly; a separation process of separating the first barrier film and the second barrier film from each other to separate the primary assembly into first laminated glass and second laminated glass; and a secondary lamination process of disposing two low-temperature lamination films between the first barrier film of the first laminated glass and the second barrier film of the second laminated glass, disposing a special film between the two low-temperature lamination films, and performing lamination at a secondary lamination temperature lower than the primary lamination temperature.

Description

특수필름의 윈드쉴드 접합방법{Laminating Method for Special Film on Windshield}Laminating Method for Special Film on Windshield

본 발명은 특수필름의 윈드쉴드 접합방법에 관한 것이다.The present invention relates to a method of bonding a windshield of a special film.

이 부분에 기술된 내용은 단순히 본 실시예에 대한 배경 정보를 제공할 뿐 종래기술을 구성하는 것은 아니다.The content described in this section merely provides background information for the present embodiment and does not constitute the prior art.

고급 차량에 장착되는 윈드쉴드(windshield)는 일반적으로 이중접합 유리(double laminated glass)이다. 도 1을 참조하면, 일반적으로 이중접합 유리는 두 장의 유리 사이에 비산방지, 열 차단 및/또는 차음을 목적으로 한 적어도 하나의 기능성 특수필름을 포함한다. 일반적으로, 유리와 이들 특수필름은 복합재성형(composite material forming)을 위한 오토클레이브(autoclave)에서 고온, 고압의 공정 조건 하에서 접합된다. Windshields installed in luxury vehicles are generally double laminated glass. Referring to FIG. 1 , in general, double laminated glass includes at least one functional special film for the purpose of preventing scattering, heat blocking and/or sound insulation between two sheets of glass. In general, glass and these special films are bonded under high temperature and high pressure process conditions in an autoclave for composite material forming.

유리와 특수필름을 접합하는 접합필름으로는 폴리비닐 부티랄(PVB: polyvinyl butyral) 필름이 대표적이며, PVB 필름의 접착에는 150 ℃ 이상의 고온 공정이 필요하다. 고온에 취약한 특수필름을 접합하기 위해서는 저온 공정이 가능한 접합필름이 사용될 수 있으나, 이 경우 윈드쉴드의 기본적인 안전 요구사양인 내관통성(penetration resistance), 내충격성(impact resistance) 등의 성능이 확보되기 어렵다. Polyvinyl butyral (PVB: polyvinyl butyral) film is typical as a bonding film for bonding glass and special film, and a high-temperature process of 150 ℃ or higher is required for bonding of PVB film. In order to bond special films that are vulnerable to high temperatures, bonding films capable of low-temperature processes can be used. .

한편, 윈드쉴드는 운전자에게 각종 정보를 표시하는 HUD(Head Up Display)의 스크린 역할을 겸하도록 형성될 수 있다. 이 경우 윈드쉴드에는 HUD로부터 입사되는 광을 회절시켜 운전자를 향하도록 기능하는 HOE필름(Holographic Optical Element Film)이 매립(fill in)될 수 있다. 홀로그램 방식의 HUD, 나아가 AR 디스플레이(Augmented Reality Display)를 더 포함하는 차량용 디스플레이에 있어서, HOE필름을 포함하는 윈드쉴드는 전체 광학계 구조를 소형화하고, 반면 디스플레이 영역은 넓게 확보하는데 필요한 핵심 광학 요소 중 하나이다.Meanwhile, the windshield may be formed to serve as a screen of a Head Up Display (HUD) that displays various information to the driver. In this case, a holographic optical element film (HOE) that diffracts light incident from the HUD to face the driver may be filled in the windshield. In a vehicle display including a holographic HUD and further AR display (Augmented Reality Display), the windshield including the HOE film miniaturizes the entire optical system structure, while the display area is one of the key optical elements necessary to secure a wide display area. .

윈드쉴드에 포함된 HOE필름은 HUD로부터 특정 각도 및 특정 파장을 가지고 입사되는 광에 선택적으로 반응하여 의도된 형태의 회절을 일으키도록 사전에 형성된 간섭패턴(interference pattern)을 포함한다. 간섭패턴은 HOE필름이 입사 광에 대해 Bragg조건(Bragg matching condition)을 만족하도록 형성되어 특정 조건에서 높은 효율로 광을 회절시킬 수 있다. The HOE film included in the windshield includes an interference pattern formed in advance to selectively react to light incident from the HUD at a specific angle and at a specific wavelength to generate an intended type of diffraction. The interference pattern is formed so that the HOE film satisfies the Bragg matching condition with respect to the incident light, so that the light can be diffracted with high efficiency under specific conditions.

HOE필름은 간섭패턴을 제공하도록 초미세 패턴이 형성된 광학 요소이다. 접합 공정 후에도 초미세 패턴의 변형이 없어야 한다. 초미세 패턴(ultra-fine pattern)을 형성하기 위한 소재는 포토폴리머(photo polymer)가 대표적이다. 그러나, 포토폴리머에 형성된 초미세 패턴은 고온 공정에서 쉽게 변형될 수 있다. The HOE film is an optical element in which an ultra-fine pattern is formed to provide an interference pattern. There should be no deformation of the ultra-fine pattern even after the bonding process. A typical material for forming an ultra-fine pattern is a photopolymer. However, the ultrafine pattern formed on the photopolymer can be easily deformed in a high-temperature process.

초미세 패턴의 변형을 방지하기 위해, 외부 광이 없는 환경에서 접합 공정을 종료한 후, 마찬가지로 외부 광이 없는 환경에서 간섭패턴이 기록되지 않은 상태로 윈드쉴드에 매립된 포토폴리머에 간섭패턴을 기록하는 방법이 개발되기도 하였다(특허문헌 0001 참조). 초미세 패턴이 고온에 노출되지 않는다는 장점이 있으나, 베이스필름 상에 적층된 포토폴리머에 간섭패턴을 직접 형성하는 것과 비교하면, 접합이 완료된 윈드쉴드에 형성되는 간섭패턴은 초미세 패턴의 정밀도가 낮을 수 있다. 간섭패턴을 인쇄하기 위한 레이저 광이 포토폴리머 외의 다른 필름층 및 필름층 경계에서 영향을 받을 수 있기 때문이다(특허문헌 0002 참조). 특히, 컬러 또는 입체 홀로그래피를 위해 HOE필름들을 복층(multilayered) 구성으로 사용하는 경우에 이와 같이 간섭패턴 인쇄를 접합 후에 수행하면 품질 저하가 더 두드러질 수 있다(비특허문헌 0001 참조). 또한, 외부 광이 없는 환경에서 대부분의 공정이 이루어지기 위한 생산 시스템 구축이 까다롭다는 단점이 있다. In order to prevent the deformation of the ultra-fine pattern, after the bonding process is finished in an environment without external light, the interference pattern is recorded in the photopolymer embedded in the windshield in a state where the interference pattern is not recorded in an environment without external light as well. A method has also been developed (see Patent Document 0001). Although the ultra-fine pattern has the advantage that it is not exposed to high temperatures, compared to directly forming the interference pattern on the photopolymer laminated on the base film, the interference pattern formed on the bonded windshield may have lower precision of the ultra-fine pattern. can This is because laser light for printing the interference pattern may be influenced by film layers other than the photopolymer and film layer boundaries (see Patent Document 0002). In particular, when HOE films are used in a multilayered configuration for color or three-dimensional holography, quality degradation may be more pronounced if the interference pattern printing is performed after bonding as described above (see Non-Patent Document 0001). In addition, there is a disadvantage in that it is difficult to construct a production system for most processes to be performed in an environment without external light.

따라서, 윈드쉴드의 안전 요구사양을 충족하면서도, HOE필름 등 고온에 취약한 특수필름을 품질 저하 없이, 예컨대 HOE필름의 간섭패턴의 변형없이, 접합할 수 있는 공정이 필요하다. Therefore, there is a need for a process capable of bonding special films, such as HOE films, which are vulnerable to high temperatures, while satisfying the safety requirements of the windshield, without deterioration of quality, for example, without deformation of the interference pattern of the HOE film.

한국 특허공개공보 제2019-0038408호 (2019.4.8)Korean Patent Publication No. 2019-0038408 (2019.4.8) 미국 특허공보 제6,127,066호 (2000.10.3)US Patent Publication No. 6,127,066 (2000.10.3)

Lee, S., et al., 2016. Additive Light Field Displays: Realization of Augmented Reality with Holographic Optical Elements. ACM Trans. Graph. 35, 4, Article 60 Lee, S., et al., 2016. Additive Light Field Displays: Realization of Augmented Reality with Holographic Optical Elements. ACM Trans. Graph. 35, 4, Article 60

본 개시는 내관통성, 내충격성 등 윈드쉴드의 안전 성능을 확보할 수 있고, 고온에 취약한 특수필름의 공정에 의한 품질 저하(예컨대 HOE필름과 같은 초미세 패턴의 변형)도 방지할 수 있는 윈드쉴드 접합공정을 제공하는 데 주된 목적이 있다. The present disclosure is a windshield that can secure safety performance of the windshield, such as penetration resistance and impact resistance, and can also prevent quality degradation (eg, deformation of ultra-fine patterns such as HOE film) due to the process of special films vulnerable to high temperatures The main object is to provide a bonding process.

이와 같은 과제를 해결하기 위하여, 본 개시의 일 실시예에 따른 윈드쉴드 접합방법은, 유리, PVB필름(polyvinyl butyral film), 제1배리어 필름(first barrier film), 제2배리어 필름, PVB필름 및 유리의 순서로 적층하고, 1차접합온도 및 고압에서 접합하여 1차조립품을 제조하는 1차접합공정; 제1배리어 필름과 제2배리어 필름을 서로 분리하여 1차조립품을 제1접합유리 및 제2접합유리로 분리하는 분리공정; 및 상지 제1접합유리의 제1배리어 필름과 제2접합유리의 제2배리어 필름 사이에 두 개의 저온접합필름을 배치하고, 두 개의 저온접합필름 사이에 특수필름을 배치한 후, 1차접합온도보다 낮은 2차접합온도에서 접합하는 2차접합공정을 포함하는 것을 특징으로 한다. In order to solve the above problems, a windshield bonding method according to an embodiment of the present disclosure includes glass, a polyvinyl butyral film (PVB), a first barrier film, a second barrier film, a PVB film, and a primary bonding process of laminating glass in order and bonding at a primary bonding temperature and high pressure to manufacture a primary assembly; a separation process of separating the first barrier film and the second barrier film from each other to separate the primary assembly into a first laminated glass and a second laminated glass; and placing two low-temperature bonding films between the first barrier film of the first laminated glass and the second barrier film of the second laminated glass, and placing a special film between the two low-temperature bonding films, then the first bonding temperature It is characterized in that it includes a secondary bonding process of bonding at a lower secondary bonding temperature.

또한, 1차접합온도는 150 ℃ 이상인 것을 특징으로 한다. In addition, the primary bonding temperature is characterized in that 150 ℃ or more.

또한, 2차접합온도는 50 내지 100 ℃ 범위인 것을 특징으로 한다. In addition, the secondary bonding temperature is characterized in that 50 to 100 ℃ range.

또한, 1차접합공정 및 2차접합공정은 오토클레이브(autoclave)를 이용하여 수행되는 것을 특징으로 한다. In addition, the primary bonding process and the secondary bonding process is characterized in that it is performed using an autoclave (autoclave).

또한, 특수필름은 HOE필름(Holographic Optical Element Film)인 것을 특징으로 한다. In addition, the special film is characterized in that it is a HOE film (Holographic Optical Element Film).

또한, 특수필름은 롤투롤 임프린팅(roll-to-roll imprinting)에 의해 제조되는 것을 특징으로 한다. In addition, the special film is characterized in that it is manufactured by roll-to-roll imprinting (roll-to-roll imprinting).

또한, 1차접합공정은 제1접합온도보다 낮은 온도에서 이루어지는 가접합공정이 사전에 더 수행되고, 제2접합공정은 제2접합온도보다 낮은 온도에서 가접합공정이 사전에 더 수행되는 것을 특징으로 한다.In addition, the first bonding process is characterized in that the provisional bonding process made at a temperature lower than the first bonding temperature is further performed in advance, and the second bonding process is characterized in that the provisional bonding process is further performed in advance at a temperature lower than the second bonding temperature do it with

또한, 가접합공정은, 진공탈포(vacuum defoaming)공정을 더 포함하여 수행되는 것을 특징으로 한다. In addition, the temporary bonding process is characterized in that it is performed further including a vacuum defoaming (vacuum defoaming) process.

또한, 저온접합필름은, EVA필름 또는 열경화성 폴리머인 것을 특징으로 한다. In addition, the low-temperature bonding film is characterized in that it is an EVA film or a thermosetting polymer.

또한, 저온접합필름은, UV경화형이고, 2차접합공정은 UV광이 조사됨으로써 경화 및 접합이 이루어지는 것을 특징으로 한다. In addition, the low-temperature bonding film is a UV curing type, and the secondary bonding process is characterized in that curing and bonding are made by irradiation with UV light.

또한, 배리어 필름은, 차광 기능을 추가로 포함하는 필름인 것을 특징으로 한다. In addition, the barrier film is characterized in that it is a film further including a light-shielding function.

또한, 배리어 필름은, 차음 기능을 추가로 포함하는 필름인 것을 특징으로 한다. In addition, the barrier film is characterized in that it is a film further including a sound insulating function.

본 개시의 실시예들에 따르면, 기계적인 내구성이 필요한 부분은 1차 고온 접합 공정으로, 고온에 취약한 특수필름은 2차 저온 접합 공정으로, 윈드쉴드의 접합 공정을 분리 수행함으로써 안전 관련 사양을 만족하면서도 특수필름의 기능손상이 없는 윈드쉴드 접합방법을 제공하는 효과가 있다. 또한, 특수필름은 단독으로 제작될 수 있어, 예컨대 윈드쉴드에 포토폴리머를 매립하여 접합을 완료한 후 초미세패턴을 형성하는 경우와 비교하여 다양한 형태의 제조 방법 및 설비를 적용할 수 있으며, 따라서 제조비용이 절감되고 생산성이 매우 높은 효과가 있다. According to the embodiments of the present disclosure, safety-related specifications are satisfied by separating the part requiring mechanical durability through the primary high-temperature bonding process, the special film vulnerable to high temperature through the secondary low-temperature bonding process, and the bonding process of the windshield It has the effect of providing a windshield bonding method without damage to the function of the special film. In addition, since the special film can be produced alone, for example, various types of manufacturing methods and equipment can be applied compared to the case of forming an ultra-fine pattern after bonding is completed by embedding a photopolymer in the windshield, and thus Manufacturing cost is reduced and productivity is very high.

도 1은 일반적인 윈드쉴드 접합방법을 나타낸다.
도 2는 본 발명의 일 실시예에 따른 윈드쉴드 접합방법을 나타낸다.
도 3은 본 발명의 일 실시예에 따른 윈드쉴드 접합방법의 공정도를 나타낸다.1 shows a general windshield bonding method.
2 shows a windshield bonding method according to an embodiment of the present invention.
3 shows a process diagram of a windshield bonding method according to an embodiment of the present invention.

이하, 본 발명의 일부 실시예들을 예시적인 도면을 통해 상세하게 설명한다. 각 도면의 구성요소들에 참조부호를 부가함에 있어서, 동일한 구성요소들에 대해서는 비록 다른 도면상에 표시되더라도 가능한 한 동일한 부호를 가지도록 하고 있음에 유의해야 한다. 또한, 본 발명을 설명함에 있어, 관련된 공지 구성 또는 기능에 대한 구체적인 설명이 본 발명의 요지를 흐릴 수 있다고 판단되는 경우에는 그 상세한 설명은 생략한다.Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. In adding reference numerals to the components of each drawing, it should be noted that the same components are given the same reference numerals as much as possible even though they are indicated on different drawings. In addition, in describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

또한, 본 발명의 구성 요소를 설명하는 데 있어서, 제 1, 제 2, A, B, (a), (b) 등의 용어를 사용할 수 있다. 이러한 용어는 그 구성 요소를 다른 구성 요소와 구별하기 위한 것일 뿐, 그 용어에 의해 해당 구성 요소의 본질이나 차례 또는 순서 등이 한정되지 않는다. 명세서 전체에서, 어떤 부분이 어떤 구성요소를 '포함', '구비'한다고 할 때, 이는 특별히 반대되는 기재가 없는 한 다른 구성요소를 제외하는 것이 아니라 다른 구성요소를 더 포함할 수 있는 것을 의미한다. 또한, 명세서에 기재된 '…부', '모듈' 등의 용어는 적어도 하나의 기능이나 동작을 처리하는 단위를 의미하며, 이는 하드웨어나 소프트웨어 또는 하드웨어 및 소프트웨어의 결합으로 구현될 수 있다.In addition, in describing the components of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the elements from other elements, and the essence, order, or order of the elements are not limited by the terms. Throughout the specification, when a part 'includes' or 'includes' a certain element, this means that other elements may be further included, rather than excluding other elements, unless otherwise stated. . In addition, the '... Terms such as 'unit' and 'module' mean a unit that processes at least one function or operation, which may be implemented as hardware or software or a combination of hardware and software.

도 2는 본 발명의 일 실시예에 따른 윈드쉴드 접합방법을 나타낸다. 2 shows a windshield bonding method according to an embodiment of the present invention.

도 2를 참조하면, 본 발명의 일 실시예에 따른 저온접합 공정을 포함하는 접합방법으로 제조되는 윈드쉴드(4)는 특수필름(special film, 30)의 양면에 저온접합필름(low-temperature adhesive film, 22)이 배치되고, 각각의 유리(10)는 일면에 PVB(20) 및 배리어 필름(barrier film, 40)이 차례로 배치되며, 배리어 필름(40) 각각이 저온접합필름(22) 각각과 접합된 구조이다. Referring to FIG. 2 , a windshield 4 manufactured by a bonding method including a low-temperature bonding process according to an embodiment of the present invention is a low-temperature adhesive film on both sides of a special film 30 . film, 22 is disposed, each glass 10 has a PVB 20 and a barrier film 40 are sequentially disposed on one surface, and each of the barrier films 40 is a low-temperature bonding film 22 and each It is a bonded structure.

도 3은 본 발명의 일 실시예에 따른 윈드쉴드 접합방법의 공정도를 나타낸다.3 shows a process diagram of a windshield bonding method according to an embodiment of the present invention.

도 3을 참조하면, 1차접합공정(S01)에서 유리(10), PVB 필름(20) 및 배리어 필름(40)이 접합되어 1차조립품(2, 3)이 완성되고, 2차접합공정(S03)에서 1차조립품(2, 3)을 저온접합필름(22)을 이용해 특수필름(30)의 양면에 접합함으로써 본 개시의 일 실시예에 따른 윈드쉴드(4)가 완성된다. Referring to FIG. 3 , the glass 10, the PVB film 20 and the barrier film 40 are bonded in the primary bonding process S01 to complete the primary assemblies 2 and 3, and the secondary bonding process ( In S03), the windshield 4 according to an embodiment of the present disclosure is completed by bonding the primary assemblies 2 and 3 to both sides of the special film 30 using the low-temperature bonding film 22.

일 실시예에 따른 윈드쉴드 접합방법은 1차접합공정(S01)이 고온 고압 상태에서 접합공정이 수행되고, 특수필름(30)을 접합하는 2차접합공정(S03)은 1차접합공정(S01)의 온도 조건보다 낮은 온도인 저온 상태에서 저온접합필름(22)을 사용하여 접합공정이 수행되는 것이 특징이다. In the windshield bonding method according to an embodiment, the primary bonding process (S01) is performed in a high-temperature and high-pressure state, and the secondary bonding process (S03) of bonding the special film 30 is the primary bonding process (S01). ) is characterized in that the bonding process is performed using the low-temperature bonding film 22 in a low-temperature state, which is a temperature lower than that of the temperature condition.

PVB 필름(20)은 윈드쉴드의 합지(laminating)에 사용되는 대표적인 접착필름이고, 윈드쉴드에 요구되는 기계적 성질을 확보하기 위해 150 ℃ 이상의 고온 공정으로 접착되는 필름이다. The PVB film 20 is a typical adhesive film used for laminating a windshield, and is a film that is adhered at a high temperature of 150° C. or higher to secure the mechanical properties required for the windshield.

배리어 필름(40)은 1차접합공정(S01)에서 PVB 필름(20)의 PVB가 용해되었을 때 흐르는 것을 방지하며, 2차접합공정(S03)에서 PVB 필름(20)과 저온접합필름(22) 사이의 화학반응을 억제하는 역할을 한다. 배리어 필름(40)은 기본적으로 내열(heat resistance), 내광성(lightfastness) 및 높은 투과율(transparency)을 가지며, 필요에 따라 차광, 차음 등의 특수 기능을 가지도록 형성된 것이 사용될 수 있다. The barrier film 40 prevents flow when the PVB of the PVB film 20 is dissolved in the first bonding process (S01), and the PVB film 20 and the low-temperature bonding film 22 in the secondary bonding process (S03) It inhibits chemical reactions between them. The barrier film 40 basically has heat resistance, lightfastness, and high transmittance, and if necessary, a barrier film 40 formed to have special functions such as light blocking and sound insulation may be used.

저온접합필름(22)은 PVB 필름(20)보다 낮은 온도에서 접합공정이 이루어지는 재료로 형성된다. 저온접합필름(22)의 소재로는 EVA필름(Ethylene-vinyl acetate film), 열경화성 폴리머(thermosetting polymer), 광경화성 폴리머(photocurable polymer) 등이 사용될 수 있다. The low-temperature bonding film 22 is formed of a material that is subjected to a bonding process at a temperature lower than that of the PVB film 20 . As a material of the low-temperature bonding film 22, an EVA film (Ethylene-vinyl acetate film), a thermosetting polymer, a photocurable polymer, etc. may be used.

특수필름(30)은 HOE필름, 차음필름 또는 차광필름 등일 수 있다. HOE필름은 HUD로부터 특정 각도 및 특정 파장을 가지고 입사되는 광에 선택적으로 반응하여 의도된 형태의 회절을 일으키도록 사전에 형성된 간섭패턴(interference pattern)을 포함한다. 차음필름 또는 차광필름은 차음 또는 차광의 목적으로 일면 혹은 양면에 점 또는 격자 패턴이 형성되거나, 특정한 표면조도(surface roughness)를 가지도록 가공된다. 예컨대 차음필름의 경우, 양면의 표면조도(Rz)가 모두 20 ㎛ 이상일 수 있으며, 바람직하게는 20 내지 70 ㎛일 수 있다. HOE필름에 형성되는 간섭패턴은 사용되는 광원의 파장 및 광학계 구조에 따라 다르지만, 수백 nm 내지 수백 ㎛ 범위의 두께를 가지는 패턴일 수 있다. The special film 30 may be an HOE film, a sound insulating film, or a light shielding film. The HOE film includes an interference pattern formed in advance to selectively react to light incident from the HUD at a specific angle and at a specific wavelength to generate an intended type of diffraction. A sound insulating film or a light shielding film is processed to have a specific surface roughness or a dot or grid pattern formed on one or both sides for the purpose of sound insulating or light blocking. For example, in the case of a sound insulation film, the surface roughness (Rz) of both surfaces may be 20 µm or more, and preferably 20 to 70 µm. The interference pattern formed on the HOE film depends on the wavelength of the light source used and the structure of the optical system, but may be a pattern having a thickness in the range of several hundred nm to several hundred μm.

일 실시예에 따른 윈드쉴드 접합방법은 이러한 초미세 패턴들의 변형을 초래하지 않을 수 있는, 예컨대 50 내지 100 ℃ 범위, 바람직하게는 50 내지 80 ℃ 범위의 낮은 온도 범위에서 특수필름(30)의 접합이 이루어지도록 형성된다. 유리(10) 표면에 배치되는 PVB필름(20)은 기존의 공정과 같은, 예컨대 150 ℃ 이상인 고온환경에서 이루어질 수 있어 차량용 윈드쉴드에 요구되는 내충격, 내관통성 및 비산방지 성능도 확보될 수 있다. The windshield bonding method according to an embodiment may not cause deformation of these ultra-fine patterns, for example, in the low temperature range of 50 to 100 ° C., preferably 50 to 80 ° C. Bonding of the special film 30 is formed to do this. The PVB film 20 disposed on the surface of the glass 10 can be made in a high temperature environment of, for example, 150 ° C. or higher, as in the conventional process, so that the impact resistance, penetration resistance and scattering prevention performance required for a vehicle windshield can also be secured.

일 실시예에 따른 윈드쉴드 접합방법은 다음의 공정으로 순차적으로 수행된다.The windshield bonding method according to an embodiment is sequentially performed by the following process.

(1) 전처리 단계(pre-treatment step)로서, 2개의 유리(10)는 세척하여 불순물이 없는 상태로 준비한다. (1) As a pre-treatment step, the two glasses 10 are washed and prepared in a state free of impurities.

(2) 1차 배치 단계(first placement step)로서, 유리(10), PVB필름(20), 제1배리어 필름(40), 제2배리어 필름(40), PVB필름(20) 및 유리(10)의 순서로 적층되도록 배치한다. (2) as a first placement step, glass 10, PVB film 20, first barrier film 40, second barrier film 40, PVB film 20 and glass 10 ) to be stacked in the order of

(3) 1차 가접합 단계(first temporary bonding step)로서, 유리(10), PVB필름(20) 및 배리어 필름(40)이 가접합 될 수 있도록 온도와 압력을 가한다. 이때 온도는 1차 가접합 온도로 정의한다.(3) As a first temporary bonding step, temperature and pressure are applied so that the glass 10 , the PVB film 20 and the barrier film 40 can be temporarily bonded. In this case, the temperature is defined as the primary temporary junction temperature.

(4) 1차 본접합 단계(first main bonding step)로서, 1차 가접합된 유리(10)-PVB필름(20)-제1배리어 필름(40)-제2배리어 필름(40)-PVB필름(20)-유리(10)의 조립체를 오토클레이브에 투입하여 고온 고압 상태에서 접합을 완료한다. 이때 온도는 1차 본접합 온도로 정의한다.(4) as a first main bonding step, the first provisionally bonded glass 10 - PVB film 20 - first barrier film 40 - second barrier film 40 - PVB film (20) - The assembly of the glass 10 is put into an autoclave to complete bonding in a high-temperature and high-pressure state. In this case, the temperature is defined as the primary main junction temperature.

(5) 1차 접합유리 분리 단계로서, 1차 본접합의 결과물을 냉각시키고, 제1, 제2배리어 필름(40)을 분리함으로써 제1접합유리 및 제2접합유리로 분리한다. (5) As the primary laminated glass separation step, the resultant of the primary main bonding is cooled, and the first and second barrier films 40 are separated to separate the first laminated glass and the second laminated glass.

(6) 2차 배치 단계로서, 1차조립품(2), 저온접합필름(22), 특수필름(30), 저온접합필름(22), 1차조립품(3)을 배치한다. 1차조립품(2, 3)은 배리어 필름(40)이 저온접합필름(22)과 접촉하도록 배치된다. (6) As the secondary arrangement step, the primary assembly (2), the low-temperature bonding film (22), the special film (30), the low-temperature bonding film (22), and the primary assembly (3) are arranged. The primary assemblies 2 and 3 are arranged such that the barrier film 40 is in contact with the low temperature bonding film 22 .

(7) 2차 가접합 단계로서, 2차 배치 단계에서 배치된 2차조립품(4)을 가접합한다. 이때 2차 가접합 온도는 1차 가접합 온도보다 낮다. (7) As the secondary temporary joining step, the secondary assembly 4 arranged in the second arrangement step is temporarily joined. At this time, the secondary temporary junction temperature is lower than the first temporary junction temperature.

(8) 2차 본접합 단계로서, 가접합된 2차조립품(4)을 오토클레이브에 투입하여 본접합을 완료한다. 이때 2차 본접합 온도는 1차 본접합 온도보다 낮다. (8) As the second main bonding step, the temporary bonding of the secondary assembly 4 is put into the autoclave to complete the main bonding. At this time, the secondary main junction temperature is lower than the primary main junction temperature.

저온접합필름(22)은 고열에 융해되는 필름일 수도 있고, 레진상태의 폴리머일 수도 있다. 레진상태의 폴리머로는 열경화성 폴리머와 광경화성 폴리머를 이용할 수 있으며, 폴리머의 종류에 따라 2차 가접합/본접합의 공정은 다른 방식을 포함할 수 있다. 즉, 열경화성 폴리머를 사용할 경우에는 상술한 바와 같이 온도와 압력 등을 가하면서 접합을 진행한다. 광경화성 폴리머를 사용할 경우에는 UV(ultraviolet ray)가 포함된 광원과 압력을 이용하여 접합을 진행한다.The low-temperature bonding film 22 may be a film that is melted at high heat, or a polymer in a resin state. A thermosetting polymer and a photocurable polymer can be used as the polymer in the resin state, and the secondary temporary bonding/main bonding process may include different methods depending on the type of polymer. That is, when using a thermosetting polymer, bonding proceeds while applying temperature and pressure as described above. When a photocurable polymer is used, bonding is performed using a light source including UV (ultraviolet ray) and pressure.

한편, 1차 가접합 단계 및/또는 2차 가접합 단계는 가조립품을 진공 백(vacuum bag)에 넣고 0.6 내지 0.8 bar까지 감압시켜 접합면에 기포가 발생하지 않도록 진공 탈포하는 과정을 더 포함할 수 있다. On the other hand, the first temporary bonding step and/or the second temporary bonding step may further include a process of vacuum defoaming so that bubbles do not occur on the bonding surface by putting the provisional assembly in a vacuum bag and reducing the pressure to 0.6 to 0.8 bar. can

또한, 1차 본접합 단계의 고압은 6 ~ 15 bar 범위의 압력일 수 있다.In addition, the high pressure of the first main bonding step may be a pressure in the range of 6 ~ 15 bar.

일 실시예에 따른 윈드쉴드 접합방법을 주요 특징 위주로 정리하면 다음과 같이 요약할 수 있다. The windshield bonding method according to an embodiment can be summarized as follows if the main characteristics are summarized.

유리(10), PVB필름(20), 제1배리어 필름(40), 제2배리어 필름(40), PVB필름(20) 및 유리(10)의 순서로 1차배치하고, 제1 및 제2배리어 필름(40) 사이를 기준으로 분리될 수 있는 1차조립품을 고온 고압에서 접합하는 1차접합공정(S01); The glass 10, the PVB film 20, the first barrier film 40, the second barrier film 40, the PVB film 20 and the glass 10 are firstly arranged in the order, and the first and second A primary bonding process (S01) of bonding a primary assembly that can be separated based on the barrier film 40 at high temperature and high pressure;

1차조립품을 냉각하고 제1 및 제2배리어 필름(40)을 분리하여 제1접합유리(2) 및 제2접합유리(3)로 분리하는 분리공정(S02); A separation process (S02) of cooling the primary assembly and separating the first and second barrier films 40 into a first laminated glass (2) and a second laminated glass (3);

제1접합유리(2) 및 제2접합유리(3) 사이에 두 개의 저온접합필름(22)을 배치하고, 두 개의 저온접합필름(22) 사이에 특수필름(30)을 배치하는 2차배치공정(S03); 및 Secondary arrangement in which two low-temperature bonding films 22 are arranged between the first laminated glass 2 and the second laminated glass 3, and a special film 30 is arranged between the two low-temperature bonding films 22 step (S03); and

2차배치된 2차조립품(4)을 저온에서 접합하는 2차접합공정(S04)의 순서로 일 실시예에 따른 윈드쉴드(4)가 제조된다. The windshield 4 according to an embodiment is manufactured in the order of the secondary bonding process (S04) of bonding the secondary assembly 4 arranged secondarily at a low temperature.

일 실시예에 따른 윈드쉴드 접합방법은 특수필름(30)이 사전에 단독으로 제작된 것을 저온 환경에서 접합할 수 있다. 특수필름(30) 중 가장 높은 수준의 형상 정밀도를 요하는 것으로 HOE필름을 들 수 있다. In the windshield bonding method according to an embodiment, the special film 30 prepared alone in advance may be bonded in a low-temperature environment. Among the special films 30 , the HOE film is one that requires the highest level of shape precision.

특허문헌 0001에 따른 방식은 홀로그램 광학계를 구축하고 HUD의 광학계에 상응하는 홀로그램 간섭패턴 기록 시스템을 구축하여, 예컨대 적어도 하나의 레이저 광을 이용하여 윈드쉴드 접합 후에 간섭패턴을 기록하는 방식이다. 즉, 생산성이 높을 수 없는 공정으로 제조된다고 할 수 있다. The method according to Patent Document 0001 is a method of constructing a hologram optical system and building a holographic interference pattern recording system corresponding to the optical system of the HUD, for example, using at least one laser light to record the interference pattern after bonding the windshield. That is, it can be said that it is manufactured by a process in which productivity cannot be high.

반면, 일 실시예에 따른 윈드쉴드 접합방법을 이용하면, 특수필름(30)의 변형 없이 윈드쉴드(4)를 접합할 수 있다. 별도로 제작가능한 특수필름(30)은 예컨대 롤투롤 임프린팅(roll-tol-roll imprinting) 방식으로 제작될 수 있어, 높은 생산성을 확보할 수 있다. 부가적으로, 이러한 특징에 의해 일 실시예에 따른 윈드쉴드(4)에 포함되는 특수필름(30)은 예컨대, 3차원 영상 디스플레이를 위한 마이크로 렌즈 어레이(micro lens array)를 가지는 HOE필름 등 다양한 형태가 윈드쉴드(4)에 포함될 수 있는 장점을 가진다. On the other hand, if the windshield bonding method according to an embodiment is used, the windshield 4 may be bonded without deformation of the special film 30 . The special film 30 that can be separately manufactured may be manufactured by, for example, a roll-tol-roll imprinting method, thereby ensuring high productivity. In addition, the special film 30 included in the windshield 4 according to an embodiment according to this feature may have various forms, such as, for example, an HOE film having a micro lens array for a three-dimensional image display. Has the advantage that can be included in the windshield (4).

이상의 설명은 본 실시예의 기술 사상을 예시적으로 설명한 것에 불과한 것으로서, 본 실시예가 속하는 기술 분야에서 통상의 지식을 가진 자라면 본 실시예의 본질적인 특성에서 벗어나지 않는 범위에서 다양한 수정 및 변형이 가능할 것이다. 따라서, 본 실시예들은 본 실시예의 기술 사상을 한정하기 위한 것이 아니라 설명하기 위한 것이고, 이러한 실시예에 의하여 본 실시예의 기술 사상의 범위가 한정되는 것은 아니다. 본 실시예의 보호 범위는 아래의 청구범위에 의하여 해석되어야 하며, 그와 동등한 범위 내에 있는 모든 기술 사상은 본 실시예의 권리범위에 포함되는 것으로 해석되어야 할 것이다.The above description is merely illustrative of the technical idea of this embodiment, and a person skilled in the art to which this embodiment belongs may make various modifications and variations without departing from the essential characteristics of the present embodiment. Accordingly, the present embodiments are intended to explain rather than limit the technical spirit of the present embodiment, and the scope of the technical spirit of the present embodiment is not limited by these embodiments. The protection scope of this embodiment should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be interpreted as being included in the scope of the present embodiment.

Claims (13)

유리, PVB필름(polyvinyl butyral film), 제1배리어 필름(first barrier film), 제2배리어 필름, PVB필름 및 유리의 순서로 적층하고, 1차접합온도 및 고압에서 접합하여 1차조립품을 제조하는 1차접합공정;
상기 제1배리어 필름과 상기 제2배리어 필름을 서로 분리하여 상기 1차조립품을 제1접합유리 및 제2접합유리로 분리하는 분리공정; 및
상지 제1접합유리의 상기 제1배리어 필름과 상기 제2접합유리의 상기 제2배리어 필름 사이에 두 개의 저온접합필름을 배치하고, 두 개의 상기 저온접합필름 사이에 특수필름을 배치한 후, 상기 1차접합온도보다 낮은 2차접합온도에서 접합하는 2차접합공정을 포함하는 것을 특징으로 하는 윈드쉴드 접합방법.Glass, PVB film (polyvinyl butyral film), first barrier film (first barrier film), second barrier film, PVB film and glass are laminated in this order and joined at the first bonding temperature and high pressure to produce a primary assembly. 1st bonding process;
a separation process of separating the first barrier film and the second barrier film from each other to separate the primary assembly into a first laminated glass and a second laminated glass; and
After placing two low-temperature bonding films between the first barrier film of the first laminated glass and the second barrier film of the second laminated glass, and placing a special film between the two low-temperature bonding films, the A windshield bonding method comprising a secondary bonding step of bonding at a secondary bonding temperature lower than the primary bonding temperature. 제1항에 있어서,
상기 1차접합온도는 150 ℃ 이상인 윈드쉴드 접합방법.According to claim 1,
The first bonding temperature is 150 ℃ or more windshield bonding method. 제1항에 있어서,
상기 2차접합온도는 50 내지 100 ℃ 범위인 윈드쉴드 접합방법.According to claim 1,
The second bonding temperature is a windshield bonding method in the range of 50 to 100 ℃. 제1항에 있어서,
상기 1차접합공정 및 상기 2차접합공정은 오토클레이브(autoclave)를 이용하여 수행되는 윈드쉴드 접합방법.According to claim 1,
The primary bonding process and the secondary bonding process are windshield bonding methods performed using an autoclave. 제1항에 있어서,
상기 특수필름은 HOE필름(Holographic Optical Element Film)인 윈드쉴드 접합방법.According to claim 1,
The special film is a windshield bonding method that is a HOE film (Holographic Optical Element Film). 제1항에 있어서,
상기 특수필름은 롤투롤 임프린팅(roll-to-roll imprinting)에 의해 제조되는 윈드쉴드 접합 방법.According to claim 1,
The special film is a windshield bonding method produced by roll-to-roll imprinting (roll-to-roll imprinting). 제1항에 있어서,
상기 1차접합공정은 상기 제1접합온도보다 낮은 온도에서 이루어지는 가접합공정이 사전에 더 수행되고, 상기 제2접합공정은 상기 제2접합온도보다 낮은 온도에서 가접합공정이 사전에 더 수행되는 윈드쉴드 접합방법.According to claim 1,
In the first bonding process, a temporary bonding process made at a temperature lower than the first bonding temperature is further performed in advance, and in the second bonding process, the temporary bonding process is further performed in advance at a temperature lower than the second bonding temperature Windshield bonding method. 제7항에 있어서,
상기 가접합공정은, 진공탈포(vacuum defoaming)공정을 더 포함하여 수행되는 윈드쉴드 접합방법.8. The method of claim 7,
The temporary bonding process is a windshield bonding method that further includes a vacuum defoaming process. 제1항에 있어서,
상기 저온접합필름은, EVA필름 또는 열경화성 폴리머인 윈드쉴드 접합방법.According to claim 1,
The low-temperature bonding film is an EVA film or a thermosetting polymer windshield bonding method. 제1항에 있어서,
상기 저온접합필름은, UV경화형이고, 상기 2차접합공정은 UV광이 조사됨으로써 경화 및 접합이 이루어지는 윈드쉴드 접합방법.According to claim 1,
The low-temperature bonding film is a UV curing type, and the secondary bonding process is a windshield bonding method in which curing and bonding are performed by irradiating UV light. 제1항에 있어서,
상기 배리어 필름은, 차광 기능을 추가로 포함하는 필름인 윈드쉴드 접합방법.According to claim 1,
The barrier film is a windshield bonding method that is a film further comprising a light-shielding function. 제1항에 있어서,
상기 배리어 필름은, 차음 기능을 추가로 포함하는 필름인 윈드쉴드 접합방법.According to claim 1,
The barrier film is a windshield bonding method which is a film further comprising a sound insulation function. 제1항 내지 제12항 중 어느 한 항에 따른 윈드쉴드 접합방법에 의해 제조되는, 특수필름을 포함하는 윈드쉴드. A windshield comprising a special film, manufactured by the method for bonding a windshield according to any one of claims 1 to 12.
KR1020200101812A 2020-08-13 2020-08-13 Laminating Method for Special Film on Windshield KR20220021228A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020200101812A KR20220021228A (en) 2020-08-13 2020-08-13 Laminating Method for Special Film on Windshield

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020200101812A KR20220021228A (en) 2020-08-13 2020-08-13 Laminating Method for Special Film on Windshield

Publications (1)

Publication Number Publication Date
KR20220021228A true KR20220021228A (en) 2022-02-22

Family

ID=80494068

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020200101812A KR20220021228A (en) 2020-08-13 2020-08-13 Laminating Method for Special Film on Windshield

Country Status (1)

Country Link
KR (1) KR20220021228A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6127066A (en) 1992-11-27 2000-10-03 Dai Nippon Printing Co., Ltd. Hologram recording sheet, holographic optical element using said sheet, and its production process
KR20190038408A (en) 2017-09-29 2019-04-08 웨이레이 에스에이 Laminated holographic display and manufacturing thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6127066A (en) 1992-11-27 2000-10-03 Dai Nippon Printing Co., Ltd. Hologram recording sheet, holographic optical element using said sheet, and its production process
KR20190038408A (en) 2017-09-29 2019-04-08 웨이레이 에스에이 Laminated holographic display and manufacturing thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Lee, S., et al., 2016. Additive Light Field Displays: Realization of Augmented Reality with Holographic Optical Elements. ACM Trans. Graph. 35, 4, Article 60

Similar Documents

Publication Publication Date Title
US20210373492A1 (en) Laminated Holographic Display and Manufacturing Thereof
AU2011237540B2 (en) Laminate structure with embedded cavities and related method of manufacture
KR101810278B1 (en) Information recording media and method for printing onto information recording media
CN100595637C (en) Display device
CN1404444A (en) Laminated multi-layer card with an inlaid security element in the form of relief structure
KR20130138305A (en) Laminated body having hologram
CA2995731C (en) Multilayer data carrier having an areal see-through window
US20200292988A1 (en) Light diffraction layer laminated sheet and method for producing card
CN113934102B (en) Transparent screen, transparent screen assembly, method for manufacturing transparent screen, and method for manufacturing transparent screen assembly
US20190381705A1 (en) Optically variable device (ovd) images embedded within plastic strips
US20170274629A1 (en) Laminated glass
CN211641539U (en) Anti-fake certificate card
KR20220021228A (en) Laminating Method for Special Film on Windshield
JP2006098466A (en) Windshield for automobile
CN110901255B (en) Anti-fake card with asymmetric structure and its making process
KR20230007435A (en) Composite plate glass having holographic elements and its production method
JP5242776B2 (en) Method for manufacturing liquid crystal panel, glass substrate for liquid crystal panel and liquid crystal panel provided with the same
CN114144244A (en) Composite glass pane with holographic element and method of manufacture
CN110893732A (en) Anti-fake certificate card and its making process
JPH07234627A (en) Preparation of laminated structure
CN211641538U (en) Anti-fake certificate card with asymmetric structure
CN116438089A (en) Laminated glass, method for producing PVB layer, and method for producing laminated glass
JP2008051998A (en) Manufacturing method of optical element
JP3799729B2 (en) Method for manufacturing hologram laminate
JP2009099014A (en) Ic card

Legal Events

Date Code Title Description
A201 Request for examination