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1. (WO2018219557) METHOD FOR MANUFACTURING SPECTACLE FRAME COMPONENTS AND FRAME COMPONENTS PRODUCED USING SAID METHOD

Pub. No.:    WO/2018/219557    International Application No.:    PCT/EP2018/060364
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Tue Apr 24 01:59:59 CEST 2018
IPC: B29D 12/02
G02C 5/00
B29C 45/16
Applicants: SAFILO SOCIETÀ AZIONARIA FABBRICA ITALIANA LAVORAZIONE OCCHIALI S.P.A.
Inventors: SABBADIN, Silvano
Title: METHOD FOR MANUFACTURING SPECTACLE FRAME COMPONENTS AND FRAME COMPONENTS PRODUCED USING SAID METHOD
Abstract:
A method is described for manufacturing spectacle frame components, such as a front frame (1) of the frame or a side arm (2) of a frame or part of the front frame or the side arm, comprising the following successive phases: preparing a cellulose acetate slab (11) having a preselected, defined thickness between opposite faces (11a, 11b) of the slab, placing the slab (11) in an over-injection mould, over-injecting elastomer over at least one of the faces of the slab (11) over at least part of the surface extent of that face to produce a slab-shaped, multilayer semifinished product (13), removing the semifinished product (13) from the mould, shaping the semifinished product (13) by cutting and/or milling to produce the preselected final shape of the component, the slab-shaped structure of the component thus made being formed of at least two layers, respectively a layer of cellulose acetate and a layer of elastomer.