WO2013156974A1 - Method for providing components of frames of eyeglasses and components obtained with such method - Google Patents

Method for providing components of frames of eyeglasses and components obtained with such method Download PDF

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Publication number
WO2013156974A1
WO2013156974A1 PCT/IB2013/053105 IB2013053105W WO2013156974A1 WO 2013156974 A1 WO2013156974 A1 WO 2013156974A1 IB 2013053105 W IB2013053105 W IB 2013053105W WO 2013156974 A1 WO2013156974 A1 WO 2013156974A1
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WO
WIPO (PCT)
Prior art keywords
fabric
glass
carbon fibers
manufactured article
impression
Prior art date
Application number
PCT/IB2013/053105
Other languages
French (fr)
Inventor
Silvio Da Pra
Original Assignee
Silvio Da Pra
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 Silvio Da Pra filed Critical Silvio Da Pra
Priority to EP13725813.3A priority Critical patent/EP2838713A1/en
Publication of WO2013156974A1 publication Critical patent/WO2013156974A1/en

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Classifications

    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
    • B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
    • B29C70/345—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation using matched moulds
    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06—Fibrous reinforcements only
    • B29C70/08—Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, and with or without non-reinforced layers
    • B29C70/083—Combinations of continuous fibres or fibrous profiled structures oriented in one direction and reinforcements forming a two dimensional structure, e.g. mats
    • B29C70/085—Combinations of continuous fibres or fibrous profiled structures oriented in one direction and reinforcements forming a two dimensional structure, e.g. mats the structure being deformed in a three dimensional configuration
    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
    • B29C70/545—Perforating, cutting or machining during or after moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D12/00—Producing frames
    • B29D12/02—Spectacle frames
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C5/00—Constructions of non-optical parts
    • G02C5/008—Spectacles frames characterized by their material, material structure and material properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2012/00—Frames
    • B29L2012/005—Spectacle frames

Abstract

A method for providing components of frames of eyeglasses, comprising the following steps: • superimposing on the impression (11) of a die (12a), in the following sequence, at least one first fabric (13a), at least one first layer of glass or carbon fibers (14a), at least one fabric made of glass or carbon fibers (14c), at least one second layer of glass or carbon fibers (14b) and at least one second fabric (13b), of which at least one of the first fabric and the second fabric (13a, 13b) is impregnated with resin, • closing and heating the mold (12), which bears the substantially flat impression (11), with application and holding of the temperature and of the forming pressure until complete polymerization of the resin, • opening the mold (12) and extracting the manufactured article (19, 119), • cutting the manufactured article (19, 119) to form the component (10) or a semifinished blank thereof.

Description

METHOD FOR PROVIDING COMPONENTS OF FRAMES OF EYEGLASSES AND COMPONENTS OBTAINED WITH SUCH METHOD
The present invention relates to a method for providing components of frames of eyeglasses and the components obtained with such method.
Nowadays frames of eyeglasses are known which are made of metallic material or of plastic material, transparent or colored.
The components of the plastic frame are typically produced by milling or by injection molding.
In the method involving milling a computer-controlled machine forms the shape of the component from sheets of colored plastic, of greater or lesser thickness. Usually the blanks thus obtained are then sent to subsequent refinishing work.
With this method various parts of the eyeglasses are formed, i.e. the front, the temples and sometimes even the nose pads, which are thus assembled and finished.
In the production method involving injection molding the liquefied plastic material is injected into the mold bearing the final impression of the component to be produced.
Both methods are very widespread and make it possible to produce eyeglasses frames made of transparent or colored plastic, either single- colored or with a limited variety of possible patterns. Neither of the two methods in fact make it possible to obtain patterns like those of, for example, colored fabrics or papers, or a tactile or visual effect similar to that of fabric.
The aim of the present invention is to provide a method for providing components of frames of eyeglasses with particular effects of pattern and materials, which cannot be achieved with conventional methods.
Within this aim, an object of the invention is to provide a method with which to provide components of frames of eyeglasses which are structurally strong.
This aim and this and other objects which will become more evident hereinafter are achieved by a method for providing components of frames of eyeglasses, characterized in that it comprises the following steps:
- superimposing on the impression of a die, in the following sequence, at least one first fabric, at least one first layer of glass or carbon fibers, at least one fabric made of glass or carbon fibers, at least one second layer of glass or carbon fibers and at least one second fabric, at least one of said at least one first fabric and at least one second fabric being impregnated with resin,
- closing and heating of the mold with application and holding of the temperature and of the forming pressure, until complete polymerization of said resin occurs, said mold bearing said substantially flat impression,
- opening said mold and extracting the manufactured article from said mold,
- cutting said manufactured article so as to form said component or a semifinished blank thereof.
Furthermore, the invention also relates to the components that are made according to such method, which are characterized in that they comprise a front or temples of such frames of eyeglasses.
Further characteristics and advantages of the invention will become more apparent from the description of a preferred, but not exclusive, embodiment of the method and the components according to the invention, which are illustrated by way of non-limiting example in the accompanying drawings wherein:
Figure 1 shows, in one step of the method according to the invention, the combination superimposed on the impression of the die;
Figure 2 shows the manufactured article extracted from the mold; Figure 3 is an enlarged view of a portion of the manufactured article in Figure 2, with its superimposed parts sectioned and exposed; Figure 4 shows the manufactured article during the cutting step of the method according to the invention;
Figure 5 shows the manufactured article at the end of the cutting step of the method according to the invention;
Figure 6 shows the component obtained by way of the method according to the invention;
Figure 7 shows a second embodiment of the manufactured article.
With reference to the figures, the method according to the invention comprises a step of superimposing on the impression 11 of a die 12a, in the following sequence, at least one first fabric 13a, at least one first layer of glass or carbon fibers 14a, at least one fabric made of glass or carbon fibers 14c, at least one second layer of glass or carbon fibers 14b and at least one second fabric 13b.
A complementary die 12b, designed to close against the die 12a, completes the mold 12 shown in Figure 1.
In particular, as is evident from Figures 1 and 3, the superimposition step creates a sandwich-like structure 15, according to which a central layer 16, comprising the fabric made of glass or carbon fibers 14c between the first and the second layers of glass or carbon fibers 14a and 14b, is closed between a first multilayer of fabric 17a and a second multilayer of fabric 17b.
Each layer of glass or carbon fibers, first 14a and second 14b, has respective fibers oriented in a single direction.
In particular, in the present embodiment, which is described herein by way of non-limiting example of the invention, the first and second layers of glass or carbon fibers 14a and 14b are arranged with the respective fibers oriented in the same single direction.
It should be noted that in other embodiments, not shown for the sake of simplicity, the layers of glass or carbon fibers, first 14a and second 14b, are arranged with the respective unidirectional fibers oriented in different directions from one layer to the next.
The first multilayer of fabric 17a comprises two layers of the first fabric 13a and the second multilayer of fabric 17b comprises two layers of the second fabric 13b.
Conveniently, the fabrics 13a and 13b are impregnated with resin, preferably synthetic, of the epoxy or acrylic type or biological natural or bioplastic or food-derived.
Again according to what is shown, this particular example shown also involves the use of a first and a second film of plastic material, respectively 18a and 18b, of the polyamide or polyethylene or bioplastic type.
In particular, the superimposition step initially involves the application of the first film of plastic material 18a on the impression 11 , which is followed by the other layers listed above, over all of which the second film of plastic material 18b is finally superimposed.
In this manner the sandwich-like structure 15 is covered, at the first and second multilayers of fabric 17a and 17b, respectively by the first and second films of plastic material 18a and 18b.
In the second step of the method according to the invention, the mold 12, which bears a substantially flat impression 11 , is closed and heated, applying and holding a specific temperature and a specific forming pressure for the entire time that it remains closed, i.e. the time necessary for the resin to migrate to the other layers and completely polymerize, in this manner gluing them to each other.
Subsequently the mold 12 is opened and the manufactured article, designated with 19 in a first embodiment thereof, is extracted from the mold 12.
Finally the manufactured article 19 is cut so as to form the component
10.
Figure 2 shows the manufactured article 19, on which a portion A is cut; the enlargement of this portion in Figure 3 highlights the parts described above.
The example is a manufactured article 19 from which a series of eyeglass frame fronts will be obtained, which will therefore not lack the seats for the lenses.
In fact, as shown in Figures 4 and 5, the cutting step substantially involves cutting and extracting the parts from the manufactured article 19 which will be occupied by the lenses of the eyeglasses and subsequently complete the shape of the component.
The impression 11 of the mold 12 is substantially flat and has a substantially U-shaped cross-section, which has a central hump 20 which extends along the entire length of of the impression 11 and creates a central shape 21 of the profile of the manufactured article 19, corresponding to the bridge 22 of the component 10, i.e. the front of the frame, designed to rest on the nose.
More specifically, the manufactured article 19 advantageously comprises a central portion 23 from which the front of the frame is obtained and also comprises two lateral portions 24, which correspond to the parallel parts of the U-shaped profile of the impression 11 , from which the couplings 25 of the front for the hinges with which the temples are to be assembled to the frame are obtained.
By conveniently modifying the cross-section of the impression it is possible with the same method to obtain not only the fronts but also the temples of the eyeglasses frames.
As illustrated in Figure 6, the component 10, i.e. the front of the frame, comprises two seats 26, or rims, for the lenses and the bridge 22, which is contoured according to the central shape 21 of the profile of the manufactured article 19.
In a second embodiment of the component according to the invention the impression is without a central protuberance and thus produces a manufactured article 119 with no central shape for the bridge of the front. It should in fact be noted that on the basis of the requirements, by modifying the shape and size of the impression but following the same method it is possible to obtain components (and thus fronts) of different shapes and sizes, for example lacking the lower part of the rims for the lenses, or smaller or bigger according to the design measurements for the frame.
It should be noted that the component can be made with a central layer 16 made of glass fibers or carbon fibers, according to requirements, and this layer combines with the fabrics 13a and 13b to ensure the desired structural strength.
Moreover, as can be seen from Figures 1 and 3, the layers of glass or carbon fibers 14a and 14b are superimposed so that those fibers are arranged in the component 10 along the direction of the prevailing dimension, which in this case runs from one coupling 25 to the other of the front.
This contrivance ensures greater strength of the frame in resisting bending.
It should also be noted that the fabrics 13a and 13b can advantageously be linen, cotton or other natural materials, which give the product a more natural appearance than the models on the market.
Moreover such fabrics 13a and 13b can bear particular patterns which remain visible after production is finished, being covered with a substantially transparent film of plastic material 18a and 18b, or the latter can itself be colored according to the pattern desired by the manufacturer.
The application of the films of plastic material 18a and 18b gives the product a clear appearance, but these can also be omitted, or they can be applied on one side only of the manufactured article, so that the purchaser will also perceive the natural tactile effect of the fabric.
Moreover the color of the frame can also be obtained with the application of sublimatic or non-sublimatic films in the mold or, on the finished product, by way of pad printing, spray painting, thermal printing and sublimation.
In practice it has been found that the invention fully achieves the intended aim and objects, by providing a method for providing components of frames of eyeglasses that have particular pattern effects and at the same time are structurally strong.
The invention, thus conceived, is susceptible of numerous modifications and variations, all of which are within the scope of the appended claims. Moreover, all the details may be substituted by other, technically equivalent elements.
In practice the materials employed, provided they are compatible with the specific use, and the contingent dimensions and shapes, may be any according to requirements and to the state of the art.
The content of Italian patent application no. PD2012A000124, the priority of which is claimed in the present application, is incorporated as a reference.
Where the technical features mentioned in any claim are followed by reference numerals and/or signs, those reference numerals and/or signs have been included for the sole purpose of increasing the intelligibility of the claims and accordingly, such reference numerals and/or signs do not have any limiting effect on the interpretation of each element identified by way of example by such reference numerals and/or signs.

Claims

1. A method for providing components (10) of frames of eyeglasses, characterized in that it comprises the following steps:
- superimposing on the impression (11) of a die (12a), in the following order, at least one first fabric (13a), at least one first layer of glass or carbon fibers (14a), at least one fabric made of glass or carbon fibers (14c), at least one second layer of glass or carbon fibers (14b) and at least one second fabric (13b), at least one of said at least one first fabric and at least one second fabric (13a, 13b) being impregnated with resin,
- closing and heating of the mold (12) with application and holding of the temperature and of the forming pressure, until complete polymerization of said resin occurs, said mold (12) bearing said substantially flat impression (1 1),
- opening said mold (12) and extracting the manufactured article (19, 119) from said mold (12),
- cutting said manufactured article (19, 119) so as to form said component (10) or a semifinished blank thereof.
2. The method according to claim 1, characterized in that said superimposition step generates a sandwich-like structure (15), according to which a central layer (16), comprising said fabric made of glass or carbon fibers (14c) between said first and second layers of glass or carbon fibers (14a, 14b), is closed between a first multilayer of fabric (17a) and a second multilayer of fabric (17b), comprising respectively said at least one first fabric (13a) and said at least one second fabric (13b).
3. The method according to claim 2, characterized in that said first multilayer of fabric (17a) and said second multilayer of fabric (17b) comprise respectively a pair of layers of said first fabric (13a) and a pair of layers of said second fabric (13b), at least one fabric of said pairs of layers of fabric (13a, 13b) being impregnated with said resin.
4. The method according to claim 1, characterized in that said resin is synthetic of the epoxy or acrylic type or biological natural or bioplastic or food-derived.
5. The method according to claim 1 , characterized in that said superimposition step initially involves the application of a first film of plastic material (18a), of the polyamide or polyethylene or bioplastic type, on said impression (11).
6. The method according to claim 2, characterized in that said superimposition step involves the final application of a second film of plastic material (18b), of the polyamide or polyethylene or bioplastic type.
7. The method according to claims 2, 5 and 6, characterized in that said sandwich-like structure (15) is covered, at said first and second multilayers of fabric (17a, 17b), respectively by said first and second films of plastic material (18a, 18b).
8. The method according to claim 2, characterized in that each one of said first and second layers of glass or carbon fibers (14a, 14b) has respective fibers oriented in a single direction.
9. The method according to claim 1 , characterized in that said impression (11) of said mold (12) is substantially flat and has a substantially U-shaped cross-section, which has a central hump (20), which extends along the entire length of said impression (11) and creates a central shape (21) of the profile of the manufactured article (19) which corresponds to the bridge (22) of said component (10), i.e., the front of said frame, designed to rest on the nose.
10. The method according to claim 9, characterized in that said manufactured article (19) comprises a central portion (23) from which said front is obtained, by means of said cutting step, said manufactured article (19) also comprising two lateral portions (24), which correspond to the parallel parts of said U-shaped profile, from which the couplings (25) for the hinges by means of which the temples are to be assembled to said frame are obtained.
11. A component (10) obtained with the method according to one or more of the preceding claims, characterized in that it comprises said front or said temple of said eyeglasses' frame.
12. The component according to claim 11 , characterized in that said front is provided with said couplings (25) for the hinges of said temples.
13. The component according to claim 11 , characterized in that it comprises two seats (26) for the lenses and said bridge (22), which is shaped according to the central shape (21) of the profile of said manufactured article (19).
PCT/IB2013/053105 2012-04-20 2013-04-19 Method for providing components of frames of eyeglasses and components obtained with such method WO2013156974A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13725813.3A EP2838713A1 (en) 2012-04-20 2013-04-19 Method for providing components of frames of eyeglasses and components obtained with such method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITPD2012A000124 2012-04-20
IT000124A ITPD20120124A1 (en) 2012-04-20 2012-04-20 PROCEDURE FOR REALIZING COMPONENTS OF FRAMES OF GLASSES AND COMPONENTS MADE WITH THIS PROCEDURE

Publications (1)

Publication Number Publication Date
WO2013156974A1 true WO2013156974A1 (en) 2013-10-24

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IT (1) ITPD20120124A1 (en)
WO (1) WO2013156974A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103909657A (en) * 2014-04-04 2014-07-09 宣城市华菱电梯配件有限公司 Continuous machining forming device of glass reinforced plastic
JP2015072470A (en) * 2013-09-25 2015-04-16 マッツチェーリ １８４９ ソシエタ ペル アチオニＭＡＺＺＵＣＣＨＥＬＬＩ １８４９ Ｓ．ｐ．Ａ． Manufacturing process of product based on cellulose acetate with blended color, and product, such as spectacles, obtained by such process
EP2238501B1 (en) * 2007-12-21 2015-05-20 Novation Tech S.P.A. Arm for spectacles
WO2015155672A1 (en) 2014-04-09 2015-10-15 SAFILO SOCIETÀ AZIONARIA FABBRICA ITALIANA LAVORAZIONE OCCHIALI S.p.A. A method of making frame components for spectacles and a component made by this method
GR20160100209A (en) * 2016-05-04 2018-02-05 Ενλιτε Με Δ.Τ. Ενλιτε Ικε Eye glasses made of wooden composite material and liquefied glue - method for matching the individual shape and specifications of a consumer ' s head
IT201900021246A1 (en) * 2019-11-15 2021-05-15 Lorenzo Ronzon PROCEDURE FOR MAKING AUCTIONS FOR GLASSES

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT505415A4 (en) * 2008-01-24 2009-01-15 Stadlmann Klaus Frame for optical lens, is integrally made of layered carbon fiber containing composite material provided with carbon fiber-prepregs and flexible glass fiber-prepregs, where prepregs are twisted against each other around specific degrees

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT505415A4 (en) * 2008-01-24 2009-01-15 Stadlmann Klaus Frame for optical lens, is integrally made of layered carbon fiber containing composite material provided with carbon fiber-prepregs and flexible glass fiber-prepregs, where prepregs are twisted against each other around specific degrees

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2238501B1 (en) * 2007-12-21 2015-05-20 Novation Tech S.P.A. Arm for spectacles
JP2015072470A (en) * 2013-09-25 2015-04-16 マッツチェーリ １８４９ ソシエタ ペル アチオニＭＡＺＺＵＣＣＨＥＬＬＩ １８４９ Ｓ．ｐ．Ａ． Manufacturing process of product based on cellulose acetate with blended color, and product, such as spectacles, obtained by such process
CN103909657A (en) * 2014-04-04 2014-07-09 宣城市华菱电梯配件有限公司 Continuous machining forming device of glass reinforced plastic
WO2015155672A1 (en) 2014-04-09 2015-10-15 SAFILO SOCIETÀ AZIONARIA FABBRICA ITALIANA LAVORAZIONE OCCHIALI S.p.A. A method of making frame components for spectacles and a component made by this method
US20170106610A1 (en) * 2014-04-09 2017-04-20 SAFILO SOCIETÀ AZIONARIA FABBRICA ITALIANA LAVORAZIONE OCCHIALI S.p.A. A method of making frame components for spectacles and a component made by this method
JP2017518202A (en) * 2014-04-09 2017-07-06 サフィーロ・ソシエタ・アツィオナリア・ファブリカ・イタリアナ・ラボラツィオーネ・オッチアリ・エス・ピー・エー Manufacturing method of spectacle frame parts and parts manufactured by the method
US10661516B2 (en) 2014-04-09 2020-05-26 Safilo Società Azionaria Fabrica Italiana Lavorazione Occhiali S.P.A. Method of making frame components for spectacles and a component made by this method
GR20160100209A (en) * 2016-05-04 2018-02-05 Ενλιτε Με Δ.Τ. Ενλιτε Ικε Eye glasses made of wooden composite material and liquefied glue - method for matching the individual shape and specifications of a consumer ' s head
IT201900021246A1 (en) * 2019-11-15 2021-05-15 Lorenzo Ronzon PROCEDURE FOR MAKING AUCTIONS FOR GLASSES

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Publication number Publication date
ITPD20120124A1 (en) 2013-10-21
EP2838713A1 (en) 2015-02-25

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