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1. CA3048471 - PVB FILM FOR HEAD UP DISPLAY (HUD), FORMING MOLD AND FORMING METHOD THEREOF

Office
Canada
Application Number 3048471
Application Date
Publication Number 3048471
Publication Date 05.07.2018
Publication Kind A1
IPC
B29C 43/36
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
43Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
32Component parts, details or accessories; Auxiliary operations
36Moulds for making articles of definite length, i.e. discrete articles
B32B 17/10
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
17Layered products essentially comprising sheet glass, or fibres of glass, slag or the like
06comprising glass as the main or only constituent of a layer, next to another layer of a specific substance
10of synthetic resin
G02B 27/10
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
27Optical systems or apparatus not provided for by any of the groups G02B1/-G02B26/119
10Beam splitting or combining systems
CPC
B29C 33/68
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
33Moulds or cores; Details thereof or accessories therefor
56Coatings ; , e.g. enameled or galvanised; Releasing, lubricating or separating agents
68Release sheets
B29C 43/021
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
43Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
02of articles of definite length, i.e. discrete articles
021characterised by the shape of the surface
B29C 43/36
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
43Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
32Component parts, details or accessories; Auxiliary operations
36Moulds for making articles of definite length, i.e. discrete articles
B29K 2029/00
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR ; MOULDS, ; REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
2029Use of polyvinylalcohols, polyvinylethers, polyvinylaldehydes, polyvinylketones or polyvinylketals ; or derivatives thereof; as moulding material
B29K 2995/0031
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR ; MOULDS, ; REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
2995Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
0018having particular optical properties, e.g. fluorescent or phosphorescent
0031Refractive
B29K 2995/0032
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR ; MOULDS, ; REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
2995Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
0018having particular optical properties, e.g. fluorescent or phosphorescent
0031Refractive
0032Birefringent
Applicants SAINT-GOBAIN GLASS FRANCE
Title
(EN) PVB FILM FOR HEAD UP DISPLAY (HUD), FORMING MOLD AND FORMING METHOD THEREOF
(FR) FILM PVB POUR AFFICHAGE TETE HAUTE (ATH), MOULE DE FORMAGE ET PROCEDE DE FORMAGE CORRESPONDANTS
Abstract
(EN)
A PVB film for HUD, a forming mold and a forming method thereof are disclosed. The accuracy error of HUD imaging achieved by the PVB film for HUD is ± 0.1 mrad. The forming mold comprises an upper mold (4) and a lower mold (5), the two of which can form an enclosed mold cavity when clamped together, wherein protective films are disposed on inner surfaces of the upper mold (4) and the lower mold (5), respectively, for supporting PVB material and preventing the PVB material from bonding with the upper mold (4) and the lower mold (5), and wherein shapes of the protective films match shapes of the upper mold (4) and the lower mold (5). The forming method comprises the following steps: sandwiching PVB material between two protective films, and then placing the PVB material into a pre-heated mold; or placing a first protective film of the two protective films into the pre-heated mold, and then placing the PVB material onto the first protective film, and finally placing a second protective film of the two protective films onto the PVB material; clamping the mold; pressurizing the mold and heating the mold to a desired temperature; taking out a formed PVB film along with the two protective films; cooling the formed PVB film; and peeling the two protective films and obtaining the PVB film for HUD.