FR2754757A1 - Method for manufacturing a front part for a glasses frame - Google Patents

Method for manufacturing a front part for a glasses frame Download PDF

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Publication number
FR2754757A1
FR2754757A1 FR9613147A FR9613147A FR2754757A1 FR 2754757 A1 FR2754757 A1 FR 2754757A1 FR 9613147 A FR9613147 A FR 9613147A FR 9613147 A FR9613147 A FR 9613147A FR 2754757 A1 FR2754757 A1 FR 2754757A1
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Prior art keywords
characterized
blank
step
front part
method according
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FR9613147A
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French (fr)
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FR2754757B1 (en
Inventor
Jacques Ardito
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Lunettes Grasset & Associes
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LUNETTES GRASSET & ASSOCIES
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Priority to FR9613147A priority Critical patent/FR2754757B1/en
Publication of FR2754757A1 publication Critical patent/FR2754757A1/en
Application granted granted Critical
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Anticipated expiration legal-status Critical
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Classifications

    • GPHYSICS
    • G02OPTICS
    • G02CSPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C5/00Constructions of non-optical parts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D12/00Producing frames
    • B29D12/02Spectacle frames

Abstract

The invention concerns a method for making the front part (1) for a spectacle frame (2) which consists in the following steps: a) producing by injection a blank in the form of a plate (16) made of a thermoplastic polymer material selected from the group consisting of polyolefins, polyacetals, polycarbonates, polyamides, saturated polyesters, sulphonic polymers, phenylene polysulphide; b) cutting out by milling the blank in the form of a plate (16) for obtaining the front part (1) for a spectacle frame (2). The resulting spectacle frames are particularly light and strong.

Description

Method of manufacturing a front part for a frame
glasses
DESCRIPTION
The present invention relates to a method of manufacturing a front portion for a spectacle frame.

 Wearers of corrective glasses or protective glasses require more and more a quality frame with aesthetic characteristics and strength.

State of the art
From EP-A-0 515 920 a front part is known for a spectacle frame made of cellulose acetate material. The corresponding manufacturing process involves making a cellulose acetate blank and then cutting it to give it the desired shape.

 Polyamide spectacle frames, especially for sunglasses, manufactured by injection methods are also known.

 US-A-4,690,523 discloses a front portion for a spectacle frame made of polyamide material. The front part includes an additional element to reinforce it. The corresponding manufacturing process consists of gluing two polyamide blanks, inserting between the two blanks the reinforcing element and then cutting the blank to give it the desired shape.

 However, the front parts and spectacle frames made of cellulose acetate have very poor mechanical properties and aging resistance. In addition, the front parts and eyeglass frames made of polyamide are not strong enough and either are intended for low-end products or require the addition of a reinforcing element.

This further complicates the manufacturing process.

Presentation of the invention
The problem is to achieve by a simple process a front part for a spectacle frame that has unmatched mechanical and chemical resistance properties.

 The object of the invention is to overcome the lack of effectiveness of existing polymer materials by selecting new thermoplastic polymer materials. The object of the invention is also to provide a manufacturing method adapted to these same thermoplastic polymers selected materials.

According to a first aspect of the invention, a method of manufacturing a front part for an eyeglass frame is characterized in that the following successive steps are implemented.
a) producing a blank made of a polymer material
thermoplastic selected from the group consisting of
polyolefins, polyacetals, polycarbonates,
polyamides, saturated polyesters, polymers
sulfonic;
b) cutting the blank to obtain the front part
for a spectacle frame.

 A blank serves as a starting point for the realization of the spectacle frame. The step of producing the blank is in particular by injection of the polymer material. In this way, the flow of material inside a mold having a simple blank shape is ensured. It also ensures a reduction of orientations and consequently a reduction of the residual stresses trapped in the polymer material constituting this blank. And by using the cutting of the blank to give it the desired shape, the internal stress stresses are reduced. These usually appear in the front parts for frames manufactured in the prior art directly by injection.

 Through the use of the thermoplastic polymer materials and the manufacturing process, the front part for a spectacle frame has unparalleled performance characteristics allowing a fineness of the circles around the glasses, a condition for an extremely light frame. This fineness is possible thanks to the exceptional mechanical strength obtained. The front part is resistant to plastic deformation, providing an ability to recover the previous forms after forced deformation, which makes the front part unbreakable, for example when inserting glasses in circles, under normal conditions of use . This is not the case for the front parts made from materials such as machined cellulose acetate and / or the injected polyamide, the latter being penalized by internal stresses generated during the injection, tensions which generate internal fissures.

 The front end is resistant in time, its low sensitivity to moisture and its low probability of relaxation of stresses unlike the case of injection technologies inducing deformation as soon as it warms up.

 The manufacturing process continues with the following steps: a polishing step and a cleaning step. Then the process continues with the following steps which can be placed in any order: a decorating step, a bending step and a step of driving the hinges.

Finally the process ends with the following steps: a varnishing step and a step of fixing the branches of the front part for a spectacle frame.

Other advantages of the method of manufacturing a front part according to the invention will appear on reading the detailed description of the invention, with reference to the drawings given by way of illustration, in which
- Figure 1 shows a perspective cut away
an injection mold
FIG. 2 is a perspective view of a blank
plate-shaped;
FIG. 3 represents a view from above of a portion
front for a spectacle frame;
FIG. 4 is a perspective view of a frame
of glasses including the front part of the
figure 3.

Detailed description of the invention
The term front part 1 designates the entire front face of the spectacle frame 2 comprising the two circles 3, 4 serving to hold the glasses, a bridge 6 between the two circles 3, 4, two places 7, 8 provided for holding with hinged pivoting 21, 22 of the two branches 9, 11 and two local thickening circles, or two locations 13, 14 provided for the attachment of legs, facing each other and intended to bear on the wings of the nose of the wearer of glasses .

The qualitative characteristics chosen for the choice of polymers are in particular a high elastic limit and a high resistance to breakage and shocks. To select thermoplastic polymer materials, three main criteria have been selected
the density measured according to the ISO 1183 standard, so that the front portion for mounting is not too heavy on the nose wings of the spectacle wearer;
- tensile modulus of elasticity measured according to ISO 527; and
- The ability to cut and especially milling to achieve very thin circles shapes.

 Two more accessory criteria are those of the transparency of the polymer material and that of the price.

As a result, the choice is possible in the following charged or uncharged polymer groups
polyolefins and more particularly high molecular weight polyethylenes called UHMW; or
polyacetals and more particularly polyoxymethylenes (POMs) homopolymers and copolymers; or
polyamides, and more particularly polyamides 12 and among these, especially polyamides 12 based on aliphatic and cycloaliphatic; or
saturated polyesters and more particularly polyterephthalates of ethyl and polybutylenesterephthalates; or
polycarbonates; or
sulphonic polymers and more particularly polysulfones, polyethersulfones and polyphenylsulfones
The method of manufacturing spectacle frames 2 made of polymeric materials, using a new raw material not yet used in this application is implemented according to the successive steps described below. Starting from granules of commercially available thermoplastic polymers, adjuvants, for example colored pigments and / or antioxidants and / or light stabilizers, are added if desired. The process begins with a step of producing a blank.

 Injection-molding technologies are manufactured using a regular-shaped blank, if possible elongated, for example, substantially parallelepipedal, the three dimensions of which are slightly greater than those of the front part for the definitive telescope frame that is to be manufactured.

 The injection is made in a blank mold 17 by means of a suitable injection ply, in order to balance and to distribute in a very homogeneous manner the masses and the flows of polymeric material flowing in the molten state. The injection line corresponds to where the filling of the material footprint will take place. The position of the injection line is on one of the transverse sides of the elongate blank mold. The geometry of the injection web is also specific. The molding conditions used with the aforementioned mold are adapted to the polymer materials used, and in particular to their melting point.

 These conditions have been optimized in order to obtain low orientations of the molded material. The orientation rate is controlled by a withdrawal measure on a sample. The quality of a blank made of transparent polymer material can be determined under stress by visualization with polarized light.

 The blank is subjected to a cutting step. This blank is machined in its final form of front part for spectacle frame, by milling techniques on CNC machines. The milling is programmed according to one or more axes to obtain a front part of glasses whose model is imposed by the customer.

 Specific cutting tools are used to cut each of the polymeric materials. The conditions of use have been specifically developed to allow a satisfactory surface condition. The cutting angle of the cutting tools is adapted. The angle retained may for example be positive and its value varies depending on the polymer material. In the state of the art, for the sparing of polymeric materials traditionally used for such fabrications such as cellulose acetate, this angle is negative. The rotational speeds of the cutting tool are adapted. The feed rates of the blank are also adapted. A cooling system of the cutting zone is used to avoid any problems of overheating of the polymeric material due to the heat generated during the cutting operation. Finally, the attack locations of the blank by the cutter are different. The attack can be done from the outside. On the other hand, for cellulose acetate, the attack is made by drilling at the future location of the nose.

 The chips of the polymeric material used, for example polyamide 12, from the blank are stored in a related recycling process, agglomerated and then remelted and reintegrated in a specific proportion to the granules of virgin polymer material during injection of roughing.

 The front part for spectacle frame obtained after cutting then goes into a sanding phase. The conditions of the operation are totally different from those known in the state of the art. The technique used is that of abrasive washing in a high speed centrifuge, in an aqueous medium and in the presence of an abrasive agent in the form of solid particles, for example resin cones and soap.

 The rotational speeds of the centrifuge are optimized and the temperature is controlled by cooling. The sanding time is quite reduced compared to the time required for sanding traditional materials, such as cellulose acetate. The cellulose acetate is sanded by rotary drum processes with pumice and fillers in a dry medium.

 The cleaning step of the front part for spectacle frames is also faster, since there is no residual sanding agent which remains stuck on the milling gaps and on the inside of the circles of the part. before.

 Then the process is continued by the following three steps, which can be placed in any order: a stage for decorating the front part for an eyeglass frame, a stage for bending said front part and a step for driving the hinges into the places planned. A preferred order is decoration, curvature and depression. It can also be arranged as: depression, decoration and curvature. The bending stage can still be placed at the top of these three stages.

 The front part for eyeglass frames is decorated.

The decoration is carried out by dye spraying or by contact with a sponge or with an electrostatic paint or by sublimation technique or by adding dye in the mass of polymer material.

For sublimation decoration, a decoration is transferred from an aluminum support or a paper support printed with inks that can be sublimated. The decorative film is applied and maintained by heating it on the part of the frame or on the field to be decorated. The film support is heated and not the receiver element ie the front part for a mount, contrary to the state of the art.

 The front part for spectacle frames is then curved and shaped according to the desired model. In this bending step, the conditions of heating, temperature maintenance and holding time in shape are adapted to the selected material on treadmill conformers.

 Then we proceed to a step of driving the hinges. Milling precedes the incrustation of metal inserts forming hinges at temperatures optimized according to the polymer material.

 The front part for spectacle frames is subjected to a varnishing step. The glossy appearance of the bezel is achieved by simple varnishing using current two-component varnishes. A very beautiful shine is found despite a matte effect polishing output.

 The manufacturing process makes it possible to achieve an ease of adaptation of decorations, as well as a high quality of the decorations by their precision, their smoothness, their color. Production management is compatible with the imperatives of fashion and small series.

Example of realization
To manufacture a front part 1 for a spectacle frame 2, use is made of polyamide 12 based on aliphatic and cycloaliphatic material from the company EMS (Switzerland) sold under the name Grilamid TR 90. Its glass transition temperature is 155 OC, and its melt flow index measured according to the standard
ISO 1133 under 5 N at 275 OC for 10 min. flow
3 is 21 cm3 with the unmodified material. This polyamide is transparent and is insensitive to scratches.

 From these polyamide granules, a plate-shaped blank 16 is made by injection, the dimensions of which are 160 mm in length, 60 mm in width and 6 mm in thickness. The injection is made with a Billion 90 Visumat 5015 reference injection press, in a mold with two cavities arranged in opposition, with a central injection ply.

 The position of the injection line is on the smallest face 18 of the rectangle constituting the plate 16. The injection is thus longitudinally with respect to the mold 17 of the plate 16 (arrow 19). The geometry of the injection web is specific. Its cross-section has a double slope shape identical to a roof, its longitudinal section varies in thickness, the thickest part being on the side of the injection part, the thinnest side of the feed point of the jar. 'injection.

The molding conditions used with the aforementioned mold 17 are
injection temperature 285 OC + 5 OC,
- slow injection speed,
- holding pressure 400 bar,
injection time 5 s,
- hold time, 20 s,
- cooling time 28 s,
- mold temperature 50 OC + 1 OC.

 The degree of orientation is controlled by a withdrawal measurement on a sample kept in an oven at a temperature of 70 ° C. for 24 hours.

The plate 16 is then cut into its final shape of the front part 1. This plate 16 is machined by 3-axis milling on a Raian 3 numerical control machine tool manufactured by the company.
Outas 2000, Pianezza (Italy). Carbide cutting tools are used.

 The cutting angle of the tools is positive and is +20. The cutting speeds are 20000 revolutions / minute. The feed rates of the plate are halved compared with those used for machining cellulose acetate plates. The cutting zone, the plate 16 and the tool are cooled with air at -26 ° C. Finally, the attack of the plate 16 by the cutter is done from the outside.

 The front part 1 for spectacle frame 2 obtained after milling is then sanded. The abrasive washing is done in a centrifuge whose rotational speed is optimized at 900 revolutions / minute. The temperature is maintained at an ambient temperature. The sanding time is equal to 2 hours.

 The front part 1 is cleaned.

 Table 1 shows a comparison of the mechanical and chemical properties and the interest of the material of the polyamide PA 12 group selected in the invention compared to other materials usually used in eyewear. We obtain a front part 1 whose average circle thickness is 1.6 mm which explains the very low weight of the front part.

Table 1

Figure img00110001

<tb><SEP> Nickel Silver <SEP> Titanium <SEP> Acetate <SEP> Propionate <SEP> PA <SEP> 12
<tb> Density <SEP> 8.9 <SEP> 4.5 <SEP> 1.32 <SEP> 1.2 <SEP> 1
<tb> Weight <SEP> (g) <SEP> 7 <SEP> 4 <SEP> 4 <SEP> 4 <SEP> 2
<tb> Coefficient
<tb> dilation <SEP> - <SEP><SEP> - <SEP><SEP> 14 <SEP> - <SEP><SEP> 0.9
<tb> thermal
<tb> Constraint
<tb> rupture <SEP> - <SEP><SEP> - <SEP><SEP> 37 <SEP> 38 <SEP> 45
<tb> (N / mm2) <SEP>
<tb> Absorption
<tb> humidity <SEP> - <SEP><SEP> - <SEP><SEP> 2,5 <SEP> 1,04 <SEP> 0,5
<tb> (gó) <SEP>
<Tb>
The front portion 1 for spectacle frame 2 is then bent on shapers at a temperature of between 180 and 210 ° C, preferably 200 OC.

 The two hinges 21, 22 are then attached to the two places 7, 8 provided respectively.

 It was chosen to decorate the front part 1 according to the sublimation technique, by transferring the decoration from an aluminum film printed with commercially available inks, in particular at SIC Mazzuchelli (Italy). The decorative film is applied and held by a silicone pad on the front part. The temperatures of the heated film support for such a transfer are set between 180 and 220 ° C. The holding time is at most 10 minutes, preferably between 2 and 4 minutes. about 4 bars.

 The front part 1 for glasses frame 2 is then varnished.

 The production method, the front part for a spectacle frame and the spectacle frame according to the invention are not limited by the details of the embodiments and examples chosen to illustrate it.

Modifications can be made without departing from the scope of the invention. The latter therefore encompasses all the means constituting technical equivalents of the means described as well as their combination.

Claims (14)

1. A method of manufacturing a front part (1) for a
 spectacle frame (2), characterized in that one
 implements the following successive steps
 a) producing a blank (16) of a material
 thermoplastic polymer selected from the group
 consisting of polyolefins, polyacetals,
 polycarbonates, polyamides, polyesters
 saturated, sulfonic polymers
 b) cutting the blank (16) to obtain the part
 before (1) for a spectacle frame (2).
2. Method according to claim 1, characterized in that
 that among the polyolefins, particular
 high molecular weight polyethylenes called UHMW.
3. Method according to claim 1, characterized in that
 that among the polyacetals, particular use is made of
 polyoxymethylenes.
4. Process according to claim 1, characterized in that
 that among the polyamides, in particular,
 polyamides 12.
5. Method according to claim 4, characterized in that
 that among the polyamides 12,
 polyamides 12 based on aliphatic and cycloaliphatic.
6. Process according to claim 5, characterized in that
 that polyamides 12 having a
 glass transition temperature of 155 OC, and of which
 the melt index measured according to the standard
 ISO 1133 under 5 N at 275 OC for 10 min.
 flow is 21 cm3.
7. Method according to one of the preceding claims,
 characterized in that the step of performing
 the blank (16) is made by injecting the material
 thermoplastic polymer in a mold (17) having
 substantially the dimensions of the front part (1)
 for a spectacle frame (2).
8. Method according to one of the preceding claims,
 characterized in that the blank (16) is
 the shape of a substantially parallelepiped plate.
9. Process according to claim 7 or 8, characterized
 what is done injection in the sense
 longitudinal section (19) relative to the mold (17) of
 the blank (16).
10. Method according to one of the preceding claims,
 characterized in that the cutting step of
 the blank (16) is machined and in particular by
 milling on a machine tool.
11. Method according to one of the preceding claims,
 characterized in that for the front part (1) for
 a frame of glasses (2), one realizes, after
 the step of cutting the blank (16), both
 following successive steps, a polishing step
 and a cleaning step, in which one carries out
 then the next three steps that can be
 placed in any order, a step of
 curving, a step of driving the hinges
 (21, 22) and a decorative step, and in that one
 finally performs a varnishing step.
12. Process according to claim 11, characterized in that
 that we carry out the decoration step by transfer
 a decoration from a support in the form of a film
 having one or more inks that can be sublimated
 by heating the support in the form of a film.
13. Method according to one of the preceding claims,
 characterized in that the material is recycled
 thermoplastic polymer rejected during the cutting of
 the blank (16), reincorporating it according to a
 certain proportion in the same polymer material
 virgin thermoplastic, intended for the production of
 roughing.
14. Eyeglass frame (2) characterized in that
 comprises two branches (9, 11) and a front part (1)
 obtained by the method according to one of the
 preceding claims.
FR9613147A 1996-10-23 1996-10-23 Method of producing a front part for an eyeglass frame Expired - Fee Related FR2754757B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9613147A FR2754757B1 (en) 1996-10-23 1996-10-23 Method of producing a front part for an eyeglass frame

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9613147A FR2754757B1 (en) 1996-10-23 1996-10-23 Method of producing a front part for an eyeglass frame
PCT/FR1997/001900 WO1998017462A1 (en) 1996-10-23 1997-10-23 Method for making the front part for spectacle frame

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FR2754757B1 FR2754757B1 (en) 1999-01-08

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2157780A1 (en) * 1999-04-21 2001-08-16 Roman Fernando Jose Honojosa Fabrication of components of a hook type fastener consists of successive injection of polymers of different colors bonded together by adhesive
WO2004099857A2 (en) * 2003-05-08 2004-11-18 Type 20 S.R.L. Eye glasses with ligthened frame and process for making them
FR2874710A1 (en) * 2004-08-31 2006-03-03 Christian Dalloz Sunoptics Sa Method for manufacturing a blank for carrying out a protective screen for sports glasses, blankets, protective screens and sports glasses obtained
EP2171524A1 (en) * 2007-07-04 2010-04-07 Theta Optics LTD OY Method for manufacturing eyeglasses
EP2215516A1 (en) * 2007-10-30 2010-08-11 Joung-Soon Kim Method of manufacturing glasses frame made of polyetherimide resin
ITMI20091121A1 (en) * 2009-06-25 2010-12-26 Plastodidattica Commerciale S R L Method for the production of frames for eyeglasses and sunglasses in polyethylene terephthalate.
EP2946914A1 (en) * 2014-05-21 2015-11-25 Mount Bros LLC Method of manufacturing eyeglass frames, apparatus for carrying out the method and frames obtained with such method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2158810B1 (en) * 1999-10-22 2002-03-16 Roman Fernando Jose Hinojosa honed to form the blanks for the manufacture of glasses and the resulting base part procedure.
KR101233660B1 (en) * 2012-06-20 2013-02-15 전진오 Unshaped spectacles

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1108209A (en) * 1966-12-17 1968-04-03 Stewart Pactor Improved spectacle frame
US4690523A (en) * 1985-07-03 1987-09-01 Kenco Optics, Inc. Monolithic reinforced eyeglass frame and friction welding method for manufacturing same
FR2612652A1 (en) * 1987-03-20 1988-09-23 Cebe International Sa Flexible spectacles made from thermoplastic material
US4955706A (en) * 1988-09-30 1990-09-11 Optyl Eyewear Fashion International Corporation Composite polymeric spectacle parts
JPH03293620A (en) * 1990-04-11 1991-12-25 Toray Ind Inc Spectacle frame
JPH04271319A (en) * 1991-02-27 1992-09-28 Mihoko Katsuta Frame of glasses using polyacetal copolymer and constituting element thereof
EP0515920A1 (en) * 1991-05-15 1992-12-02 OPTIK PARTNER AG &amp; CO. Method of producing a spectacle frame
US5304421A (en) * 1991-03-06 1994-04-19 L'amy S.A. Synthetic resin spectacle frame component, and method of manufacturing it

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1108209A (en) * 1966-12-17 1968-04-03 Stewart Pactor Improved spectacle frame
US4690523A (en) * 1985-07-03 1987-09-01 Kenco Optics, Inc. Monolithic reinforced eyeglass frame and friction welding method for manufacturing same
FR2612652A1 (en) * 1987-03-20 1988-09-23 Cebe International Sa Flexible spectacles made from thermoplastic material
US4955706A (en) * 1988-09-30 1990-09-11 Optyl Eyewear Fashion International Corporation Composite polymeric spectacle parts
JPH03293620A (en) * 1990-04-11 1991-12-25 Toray Ind Inc Spectacle frame
JPH04271319A (en) * 1991-02-27 1992-09-28 Mihoko Katsuta Frame of glasses using polyacetal copolymer and constituting element thereof
US5304421A (en) * 1991-03-06 1994-04-19 L'amy S.A. Synthetic resin spectacle frame component, and method of manufacturing it
US5482664A (en) * 1991-03-06 1996-01-09 L'amy S.A. Method of manufacturing a synthetic resin spectacle frame component
EP0515920A1 (en) * 1991-05-15 1992-12-02 OPTIK PARTNER AG &amp; CO. Method of producing a spectacle frame

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 016, no. 131 (P - 1332) 3 April 1992 (1992-04-03) *
PATENT ABSTRACTS OF JAPAN vol. 017, no. 062 (P - 1483) 8 February 1993 (1993-02-08) *

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2157780A1 (en) * 1999-04-21 2001-08-16 Roman Fernando Jose Honojosa Fabrication of components of a hook type fastener consists of successive injection of polymers of different colors bonded together by adhesive
WO2004099857A2 (en) * 2003-05-08 2004-11-18 Type 20 S.R.L. Eye glasses with ligthened frame and process for making them
WO2004099857A3 (en) * 2003-05-08 2005-01-06 Vecchio Paola Del Eye glasses with ligthened frame and process for making them
FR2874710A1 (en) * 2004-08-31 2006-03-03 Christian Dalloz Sunoptics Sa Method for manufacturing a blank for carrying out a protective screen for sports glasses, blankets, protective screens and sports glasses obtained
WO2006027465A1 (en) * 2004-08-31 2006-03-16 Christian Dalloz Sunoptics S.A.S. Method for creating a blank for producing a protective screen for sports glasses, and obtained blank, protective screen, and sports glasses
EP2171524A1 (en) * 2007-07-04 2010-04-07 Theta Optics LTD OY Method for manufacturing eyeglasses
EP2171524A4 (en) * 2007-07-04 2014-04-09 Theta Optics Ltd Oy Method for manufacturing eyeglasses
EP2215516A1 (en) * 2007-10-30 2010-08-11 Joung-Soon Kim Method of manufacturing glasses frame made of polyetherimide resin
EP2215516A4 (en) * 2007-10-30 2014-01-01 Joung-Soon Kim Method of manufacturing glasses frame made of polyetherimide resin
EP2267076A1 (en) * 2009-06-25 2010-12-29 Plastodidattica Commerciale S.r.L. Method for making polyethylene terephthalate glass and sunglass frames
ITMI20091121A1 (en) * 2009-06-25 2010-12-26 Plastodidattica Commerciale S R L Method for the production of frames for eyeglasses and sunglasses in polyethylene terephthalate.
EP2946914A1 (en) * 2014-05-21 2015-11-25 Mount Bros LLC Method of manufacturing eyeglass frames, apparatus for carrying out the method and frames obtained with such method
WO2015179610A1 (en) * 2014-05-21 2015-11-26 Mount Bros Llc Method of manufacturing eyeglass frames, apparatus for carrying out the method and frames obtained with such method

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Publication number Publication date
WO1998017462A1 (en) 1998-04-30
FR2754757B1 (en) 1999-01-08

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