WO2018109242A1 - Procedimiento de fabricación de artículos tridimensionales de pared flexible - Google Patents
Procedimiento de fabricación de artículos tridimensionales de pared flexible Download PDFInfo
- Publication number
- WO2018109242A1 WO2018109242A1 PCT/ES2016/070902 ES2016070902W WO2018109242A1 WO 2018109242 A1 WO2018109242 A1 WO 2018109242A1 ES 2016070902 W ES2016070902 W ES 2016070902W WO 2018109242 A1 WO2018109242 A1 WO 2018109242A1
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- WO
- WIPO (PCT)
- Prior art keywords
- mold
- pieces
- template
- counter
- laminar
- Prior art date
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Classifications
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
- A43B23/02—Uppers; Boot legs
- A43B23/0245—Uppers; Boot legs characterised by the constructive form
- A43B23/0295—Pieced uppers
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- 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
- B29D35/00—Producing footwear
- B29D35/10—Producing footwear having preformed soles or heels joined on to preformed uppers using a moulding technique, e.g. by feeding or injecting plastics material between the parts to be joined
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
- A43B23/02—Uppers; Boot legs
- A43B23/0205—Uppers; Boot legs characterised by the material
- A43B23/0215—Plastics or artificial leather
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
- A43B23/02—Uppers; Boot legs
- A43B23/0245—Uppers; Boot legs characterised by the constructive form
- A43B23/0255—Uppers; Boot legs characterised by the constructive form assembled by gluing or thermo bonding
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
- A43D25/00—Devices for gluing shoe parts
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
- A43D25/00—Devices for gluing shoe parts
- A43D25/047—Devices for lasting with adhesives or for gluing together insoles and uppers
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
- A43D999/00—Subject matter not provided for in other groups of this subclass
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- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/04—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
- B29C44/06—Making multilayered articles
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- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
- B29C44/14—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements the preformed part being a lining
- B29C44/145—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements the preformed part being a lining the lining being a laminate
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- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
- B29C44/14—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements the preformed part being a lining
- B29C44/146—Shaping the lining before foaming
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- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14065—Positioning or centering articles in the mould
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- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14336—Coating a portion of the article, e.g. the edge of the article
- B29C45/14344—Moulding in or through a hole in the article, e.g. outsert moulding
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- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14336—Coating a portion of the article, e.g. the edge of the article
- B29C45/14377—Coating a portion of the article, e.g. the edge of the article using an additional insert, e.g. a fastening element
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- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14467—Joining articles or parts of a single article
- B29C45/14508—Joining juxtaposed sheet-like articles, e.g. for making trim panels
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- 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
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
- B29C69/02—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore of moulding techniques only
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- 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
- B29D35/00—Producing footwear
- B29D35/02—Producing footwear made in one piece using a moulding technique, e.g. by injection moulding or casting
- B29D35/04—Producing footwear made in one piece using a moulding technique, e.g. by injection moulding or casting having multilayered parts
-
- 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
- B29D35/00—Producing footwear
- B29D35/12—Producing parts thereof, e.g. soles, heels, uppers, by a moulding technique
- B29D35/126—Uppers
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- 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
- B29D35/00—Producing footwear
- B29D35/12—Producing parts thereof, e.g. soles, heels, uppers, by a moulding technique
- B29D35/128—Moulds or apparatus therefor
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
- A43D2200/00—Machines or methods characterised by special features
- A43D2200/50—Machines using pneumatic means
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14065—Positioning or centering articles in the mould
- B29C2045/14131—Positioning or centering articles in the mould using positioning or centering means forming part of the insert
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14311—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles using means for bonding the coating to the articles
- B29C2045/14327—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles using means for bonding the coating to the articles anchoring by forcing the material to pass through a hole in the article
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14467—Joining articles or parts of a single article
- B29C2045/14532—Joining articles or parts of a single article injecting between two sheets
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14467—Joining articles or parts of a single article
- B29C2045/1454—Joining articles or parts of a single article injecting between inserts not being in contact with each other
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- 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
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3005—Body finishings
- B29L2031/3008—Instrument panels
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- 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
- B29L2031/00—Other particular articles
- B29L2031/48—Wearing apparel
- B29L2031/50—Footwear, e.g. shoes or parts thereof
Definitions
- the present invention relates to a process for manufacturing three-dimensional flexible wall articles, such as footwear, bags, clothing, seating furniture, etc., and in general all types of articles that are limited by a flexible external wall composed of laminar pieces, of a flexible nature, which are joined together by their opposite edges.
- the process of the invention is applicable to the manufacture of flexible wall articles, which can be provided with an internal lining, which can also be flexible in nature and be or not composed of laminar pieces.
- the process of the invention is applicable to the manufacture of articles comprising a flexible external wall and can internally include a wall or core of semi-rigid nature, for example, for the formation of seat furniture, vehicle dashboards, etc.
- the process of the invention is designed for the manufacture of articles of the type exposed by means of a mold and counter mold between which a volume corresponding to that of the article to be obtained is delimited, the article being composed of flexible laminar pieces that are mounted on a flexible template that is fixed on the internal surface of the mold, joining the laminar pieces together by means of an adherent material that is injected in a fluid state through a network of limited ducts between mold, flexible template and facing edges of laminar pieces.
- REPLACEMENT SHEET (RULE 26) Consecutive, whether sewn or glued, require overlapping the edges of the pieces to be joined.
- the seams require the realization of holes through which the threads of the seams pass, holes that constitute water penetration paths.
- the article to be obtained must be waterproof, it is necessary to resort to the use of liners based on special membranes, internal sealing tapes, etc., all of which imply an increase in the manufacturing cost.
- a flexible sheet template can be used, on which said pieces are fixed, properly positioned, and then the template is fixed, by the free surface of laminar pieces, on the surface of the mold.
- the use of the flexible laminar template facilitates the placement of the laminar pieces that will configure the article to be obtained outside the mold and, because it is flexible, allows its deformation, facilitating the introduction of the counter-mold.
- the fixing of the laminar pieces on the template is usually done by means of an adhesive.
- This fixing system requires great precision in the positioning of the laminar pieces on the template and considerable time consumption.
- REPLACEMENT SHEET (RULE 26) Another drawback presented by the use of lamellar insoles is the lack of tightness that can occur in the limits of the ducts through which the plastic material is injected in a fluid state.
- the object of the present invention is to eliminate the problems set forth by a method of manufacturing three-dimensional articles of flexible wall, of the type initially exposed, which includes the use of a flexible three-dimensional template, based on an elastically deformable material, which, being said template compressed between mold and counter mold, allows to perfectly seal the edges or boundaries of the conduits through which the plastic material is injected in a fluid state.
- the template can be deformed when the counter-mold is mounted, thus facilitating assembly of the assembly.
- a further advantage is that the template will serve as a means of clamping the laminar pieces, between mold and counter-mold.
- the template is of three-dimensional configuration and reproduces, at least by the surface on which the laminar pieces are arranged, the shape of the article to be manufactured, said template being obtained, for example, by molding, based on an elastically deformable material, such as silicone.
- the wall of the cited template will be thicker than the distance between the surface of the mold and the facing surface of the flexible laminar pieces, at least along part of the areas that limit the channels through which the mold will be injected. plastic material in a fluid state, so that when mounting the counter-mold, the edges of the flexible laminar pieces are compressed against the mold, thus sealing the channels.
- the template with the described constitution can present, by the surface facing the flexible laminar pieces and in coincidence with channels through which the plastic material will be injected in a fluid state, grooves, preferably of greater width than the channels.
- the channels and grooves facing define ducts of greater section, which allow to obtain cords of union of greater section
- REPLACEMENT SHEET (RULE 26) between opposite edges of adjacent laminar pieces, in whose cords the edges of the laminar pieces may be occluded, preferably if such edges are lowered.
- the template can present, by the surface destined to receive the laminar pieces, nerves that limit the defined channels between opposite edges of adjacent laminar pieces, nerves that, when mounting the countermould, will be compressed, providing the sealing of the conduits through which the plastic material will be injected in a fluid state.
- the grooves of the template can also be limited by longitudinal ribs.
- the template with the flexible laminar pieces on it, could be mounted on the counter-mold and when the mold is coupled, the sealing of the conduit network is achieved, along its edges, preventing the material injected in a fluid state may exceed the limits of the channel network.
- the flexible sheet template is replaced by a non-sheet structure template, of three-dimensional configuration and preferably obtained by molding based on an elastically deformable material, which can have different textures on their surfaces to achieve different effects on the injected plastic material, once solidified.
- the template may have design differences on its internal and external surfaces.
- the flexible laminar pieces that will form the wall of the article to be obtained are imprisoned between the template and counter-mold, ensuring its positioning during the injection of the material in a fluid state, it being not necessary that said parts have to be fixed previously to the template, for example, by means of adhesive, as with the flexible laminar template of the prior art.
- the placement of said laminar pieces on the template require less precision than if the template were of laminar structure, since the edges of said pieces would be hidden in the joining cords.
- the template based on an elastically deformable material, allows in its
- REPLACEMENT SHEET (RULE 26) manufacturing obtain angles, edges and shapes in general with greater fidelity than in the use of laminar templates.
- the three-dimensional insole of the invention Due to the high deformability of the three-dimensional insole of the invention, based on an elastically deformable material, it facilitates both its assembly and its disassembly, without having to make cuts, which implies a considerable improvement, with respect to the laminar templates known.
- the three-dimensional template that is, with a certain thickness, of a flexible and elastically deformable nature, it allows the pressures exerted on said template, for example, when closing mold against mold, to be transmitted on the laminar pieces in a direction perpendicular to the same, which, in addition to ensuring the sealing between template and laminar pieces, ensures and maintains the positioning of said pieces, without risks of displacement of them.
- the nature of the template based on an elastically deformable material, allows its reuse, avoiding recycling operations, as well as possible unwanted environmental impacts.
- the process of the invention allows obtaining articles with three-dimensional memory, which will generate excellent adaptation and comfort for the user.
- FIG. 1 a perspective of a sheet template constituted according to the invention, for obtaining a shoe.
- Figure 2 a longitudinal section of the sheet template of Figure 1 coupled on a mold, for obtaining a shoe.
- FIG. 3 corresponds to detail A of figure 2, on a larger scale.
- REPLACEMENT SHEET (RULE 26) - Figures 12 to 15 show, in plan and section, other possible variants of execution.
- Figure 16 a view similar to Figure 2, showing another variant of execution.
- Figure 18 a view similar to Figure 16, showing a further variant of execution.
- FIG. 20 shows in section a variant version of the system for fixing vacuum laminar parts.
- Figure 1 shows a three-dimensional insole (1) for the manufacture of footwear, by means of a mold and counter mold between which a volume corresponding to that of the article to be obtained is delimited. In the present case it is a question of obtaining footwear.
- the template (1) will be applied on the concave surface of the mold (2), once arranged on it, on its internal surface, the laminar pieces (3) that will form the shoe cut, pieces that are separated from each other to delimit between their opposite edges channels (4).
- the template (1) will reproduce, at least by the surface on which the laminar pieces (3) are applied, the shape of the article to be obtained.
- the template (1) is made of an elastically deformable material and can be obtained, for example, by silicone-based molding. Once the template (1) is obtained, with the shape of the article to be manufactured, the laminar pieces (3) that will form the shoe cut are cut, which are placed on the internal surface of the template (1), with the edges of adjacent pieces facing and separated to delimit between the same channels (4).
- the template (1) is coupled with the laminar pieces (3) in the mold (2), which may consist of one, two or more pieces.
- the counter mold not shown, in the template (1), is assembled on the sheet pieces (3).
- the counter-mold will take the form of last and close the mold.
- the last or counter-mold can also be a silicone template carrier at least over certain areas, where it is necessary or convenient that the surface of the laminar pieces directed towards the counter mold seal efficiently against said counter mold.
- the provision of elastically deformable template on mold and against mold eliminate the risk of contamination or penetration of the injected fluid in the parts that will make up the article to be obtained, especially when said parts are permeable to the injected fluid.
- the channels (4) are closed externally by the template (1) and internally by means of the counter-mold (5), figure 3, forming a network of conduits (6), through which an adherent product is injected, in a state fluid which, when solidifying, serves as a means of joining the opposite edges of the adjacent sheet pieces (3).
- the template (1) is obtained based on an elastically deformable material, such as silicone, and will be thicker than the distance "D" between the mold (2), figure 3, and the laminar pieces ( 3), at least at the edges of said sheet pieces, so that said edges are compressed against the counter-mold (5), thus ensuring the tightness of the ducts (6) along them.
- This characteristic can be achieved by increasing the thickness of the template only in the areas that limit the ducts (6). For example, by means of ribs (7), figure 4, which run on both sides of said ducts and when pressed against the sheet pieces (3) when the template is compressed by the adjustment between mold (2) and counter-mold (5), provide the longitudinal sealing of the ducts (6).
- the template (1) can have grooves (8), which run in coincidence with the channels (4) bounded between opposite edges of adjacent sheet pieces (3), said grooves (8) being larger width than the channels (4), thereby increasing the section of the joint cord (9) formed by the adherent material injected through the ducts (6) once solidified.
- the facing edges (10) of the adjacent laminar pieces (2) may be recessed to become occluded in the cord (9), which will form the injected material, which allows to increase the bonding surface and hide said edges. In this case, the lowered edges would not be pressed
- the groove (8) of the template (1) may be limited by ribs (7 ' ), with a function similar to that of the ribs (7) described above.
- the laminar pieces (3) are located between the three-dimensional template (1), of elastically deformable material, and the countermould (5 X ), formed for example from a plate of plastic material.
- This counter mold forms, in a position coincident with the separation between the facing edges (10) of the laminar pieces (3), a channel (8 ' ).
- the three-dimensional template (1) has ribs (7 ' ) near the edges (10 ' ).
- Embellishing cords (8 ' ), figure 8 can be applied on the surface of the laminar pieces (3 ' ), based on the same adherent material that will be injected by grooves (8) figure 5, practiced in the template (1).
- connection between opposite edges of adjacent sheet pieces (3) can be reinforced, for example, by the provision of an auxiliary sheet (1 1), figure 9, coinciding with the ducts (6), by the unseen surface of the product obtain.
- This auxiliary sheet can run only in coincidence with the ducts (6) or cover the entire surface of the pieces (2), as a lining (12), figure 10, said liner being able to present a recess (13) in coincidence with the mentioned ducts.
- a sheet (12 ' ) of fabric can be applied on the laminar pieces (3) in coincidence with their edges, in the areas (13 ' ) adjacent to the ducts (6) they will be impregnated by the adherent product injected through said channels, to serve as a means of joining between sheets (12 ' ) of tissue.
- the laminar pieces (3) can have, near their edges (10), holes (3 ' ) that are in communication with the grooves (8), coinciding with the channels (4) .
- the injected adherent material that will form the cords (9) will fill the holes (3 ' ) and act, when solidifying, as rivets that serve as a mechanical means of joining between the laminar pieces (1).
- the edges (10) of the laminar pieces (1) can have facing recesses (10 ' ) that increase the length of the edges facing to join adjacent laminar pieces (1).
- the process of the invention is applicable to obtaining three-dimensional articles that may be composed of an outer layer or wall of a flexible nature and a rigid or semi-rigid inner layer or padding and that may consist of a piece of furniture, vehicle dashboard or the like .
- the template (1 ' ) of elastically deformable material is applied on the internal surface of the mold (2 ' ), which will be the carrier of the laminar pieces (3 ' ) that will form the external wall of the article to be obtained and which are separated by separation lines (4 ' ).
- the mold (2 ') (the counter-mold 5) applies' and between it and the blanks (3') is a chamber (14) in which a material is injected in a fluid state, which will form a Once solidified, a support (14 ' ) that joins the laminar pieces (3 ' ) that make up the outer wall of the article, composed of the laminar pieces (3 ' ).
- the counter-mold (5 ' ) could even be part of the final article obtained. With this system of joining between sheet pieces (3 ' ), the article obtained will lack external projections or ribs, as well as separations between said sheet pieces.
- the mold (2 ' ) could form a chamber (15), whose internal wall, as well as the template (), could have matching holes (16) through which and by means of a vacuum created through the nozzle (17) , the pieces (3 ' ) would be fixed to the template (1 ' ) -
- the template (1 ' ) can have a different design for its internal and external surfaces and is deformable, all of which facilitates both its assembly and disassembly of the mold, as the assembly of the counter-mold, and all this without having to break Template.
- FIG 17 shows the neck (18) of a shoe formed by the same material as the laminar pieces that make up the cut, which wraps a piece of foam (19) and which in turn is inside the insole (1) , which has ribs (20) that limit a gap (21) in which the adhesive that closes the neck (18) will be injected, preventing its contact with the foam (19).
- the template (1 ' ), figures 18 and 19, can be provided with holes (15) through which vacuum can be applied which will serve as a means of fixing the pieces (3 ' ).
- the mold (2 ' ) could have a network of gutters (16), with which the holes (15) will coincide.
- the gutters (16) will be in communication with a vacuum source, for example, through a chamber (18) with connection nozzle (19). In this way, the vacuum effect is applied uniformly over all the pieces (3 ' ) and with it the effect of fixing said pieces to the template (1 ' ).
- a possible variant is shown in section 20 in which in the template
- a peripheral emptying (15 ' ) is placed around the mouth of the holes (15) in which microfiber pieces (1 1 ' ) are placed through which the suction produced by the vacuum applied through the holes (15). In this way a greater area of aspiration is achieved on the laminar pieces (3) and a better closure against air loss.
- Figures 21 and 22 show the manufacture of a briefcase (22) by the process of the invention.
- the three-dimensional template (1) is arranged on the internal surface of the mold (2), which is the carrier of the laminar pieces (3) that will form the surface seen of the case.
- a reinforcing sheet (23), for example, of plastic material, is applied on these sheet pieces, on which an inner liner (24) is provided, supported by the counter-mold (5).
- an inner liner (24) is provided in the channels (4) delimited between consecutive laminar pieces (3) the adherent material that will be formed is injected binding cords (25).
- the arrangement of a zipper (26) is also shown, as a means of closing the case.
- FIG. 23 and 24 the obtaining of a car dashboard (27) is shown.
- the three-dimensional template (1) is arranged, for example, of silicone, which is carrier of the laminar pieces (3), which will form the surface seen of the dashboard.
- a layer (28) of foam or the like is applied, for example, of open cell, followed by a rigid (semi-rigid) support (29), which has projections or ribs (30) that press against the sheet piece (3) and template (1) with which a seal is obtained that prevents the injected material that will form the connecting cords (25) between sheet pieces (3) could contaminate both said sheet pieces and the foam layer ( 28).
- the process is completed with the counter mold (5).
- the cords (25) can form decorative elements of the product obtained, both for its layout and for its color.
- the use of templates based on an elastically deformable material allows the inclusion of pieces that will become part of the cut or surface view of the same and that will be thicker than the separation between the template and the mold.
- Another advantage of using the template of elastically deformable material, with a certain thickness, is the ease it provides when opening the mold and removing the counter-mold and the shaped article.
- the opposite edges of adjacent sheet pieces (3) can be folded according to strips (31) that are attached and remain inside a groove (32) formed in a cover (33). ), rigid or semi-rigid, which acts as a counter-mold and covers the set of laminar pieces. The adherent material will be injected through these grooves (32).
- the grooves (32) can be longitudinally sealed, preventing the exit of the injected adherent material, or open to allow the exit of said material which, when solidified, will form a support layer for the exposed layer formed by the laminar pieces.
- the cover (33) could be dispensed with, then the grooves (32) being made in the counter-mold.
- the template (1) could be dispensed with, the laminar pieces (3) being directly supported by the mold (2).
- the process of the invention is applicable in the manufacture of padded seats, such as a seat for vehicles, as shown in figures 26 to 29.
- the laminar pieces (3) are arranged on the template (1) three-dimensional and said template is mounted on the internal surface of the mold (2).
- the edges of the laminar pieces (3) will preferably be recessed and housed in channels (4 ' ) formed in the counter-mold in which the adherent product responsible for joining the opposite edges of laminar pieces ( 3) adjacent.
- the counter-mold (5) is separated and a second counter-mold (5 ' ) is mounted, figure 28, which has needles (34) that support against the laminar pieces (3), with the that delimit a space (5) in which, by means of a second injection process, a foam or similar product is injected, with which a layer (36) will be obtained in the seat, behind the laminar pieces (3). buffer, figure 29.
- the foam layer (36) When disassembling the counter-mold (5 ' ) the foam layer (36) will have ventilation perforations (37), thus avoiding a subsequent drilling process.
- the laminar pieces (3) can be carriers, on the back, of a moisture insulating membrane (3), which must be removed at the edges of said pieces, to allow bonding by the injected adherent material.
- This membrane can be arranged in those areas where an insulating separation between the foam layer (36) and the sheet pieces (3) is desired.
- repellent product could be applied to the injected to the second injection stage (foam or similar), which would result in an external skin separated from the buffer layer (36).
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
- Purses, Travelling Bags, Baskets, Or Suitcases (AREA)
- Laminated Bodies (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Moulds, Cores, Or Mandrels (AREA)
Abstract
Description
Claims
Priority Applications (11)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2019122035A RU2741310C2 (ru) | 2016-12-16 | 2016-12-16 | Способ изготовления трехмерных изделий с гибкими стенками |
PT169238227T PT3556545T (pt) | 2016-12-16 | 2016-12-16 | Método de fabrico de artigos tridimensionais com paredes flexíveis |
CA3047192A CA3047192A1 (en) | 2016-12-16 | 2016-12-16 | Method for manufacturing three-dimensional items with flexible walls |
BR112019012137-4A BR112019012137B1 (pt) | 2016-12-16 | 2016-12-16 | Método de fabricação de artigos tridimensionais de parede flexível |
ES16923822T ES2901799T3 (es) | 2016-12-16 | 2016-12-16 | Procedimiento de fabricación de artículos tridimensionales de pared flexible |
MX2019006927A MX2019006927A (es) | 2016-12-16 | 2016-12-16 | Procedimiento de fabricacion de articulos tridimensionales de pared flexible. |
JP2019532701A JP6938635B2 (ja) | 2016-12-16 | 2016-12-16 | 可撓性壁を有する三次元物品の製造方法 |
PCT/ES2016/070902 WO2018109242A1 (es) | 2016-12-16 | 2016-12-16 | Procedimiento de fabricación de artículos tridimensionales de pared flexible |
EP16923822.7A EP3556545B1 (en) | 2016-12-16 | 2016-12-16 | Method for manufacturing three-dimensional items with flexible walls |
US16/469,393 US11440279B2 (en) | 2016-12-16 | 2016-12-16 | Method for manufacturing three-dimensional items with flexible walls |
CN201680092082.4A CN110300656B (zh) | 2016-12-16 | 2016-12-16 | 用于制造具有柔性壁的三维物品的方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/ES2016/070902 WO2018109242A1 (es) | 2016-12-16 | 2016-12-16 | Procedimiento de fabricación de artículos tridimensionales de pared flexible |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2018109242A1 true WO2018109242A1 (es) | 2018-06-21 |
Family
ID=62558107
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/ES2016/070902 WO2018109242A1 (es) | 2016-12-16 | 2016-12-16 | Procedimiento de fabricación de artículos tridimensionales de pared flexible |
Country Status (11)
Country | Link |
---|---|
US (1) | US11440279B2 (es) |
EP (1) | EP3556545B1 (es) |
JP (1) | JP6938635B2 (es) |
CN (1) | CN110300656B (es) |
BR (1) | BR112019012137B1 (es) |
CA (1) | CA3047192A1 (es) |
ES (1) | ES2901799T3 (es) |
MX (1) | MX2019006927A (es) |
PT (1) | PT3556545T (es) |
RU (1) | RU2741310C2 (es) |
WO (1) | WO2018109242A1 (es) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020065118A2 (es) | 2018-09-27 | 2020-04-02 | Simplicity Works Europe, S.L. | Molde, máquina y procedimiento para la fabricación de artículos tridimensionales y planta de fabricación asociada a la misma |
Families Citing this family (4)
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US20220312872A1 (en) * | 2017-01-12 | 2022-10-06 | John Engine Sports Products, Inc. | Glove structure and its manufacaturing method |
US11981839B2 (en) | 2019-09-30 | 2024-05-14 | The Boeing Company | Method and apparatus for fabrication of composite tooling |
US20210094246A1 (en) * | 2019-09-30 | 2021-04-01 | The Boeing Company | Method and apparatus for fabrication of composite tooling |
DK181170B1 (en) * | 2020-12-02 | 2023-03-22 | Ecco Sko As | Footwear moulding system and method for direct injection production of footwear |
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WO2005025841A1 (en) * | 2003-09-10 | 2005-03-24 | Jas D. Easton, Inc. | Article of footwear comprising a unitary support structure and mehtod of manufacture |
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- 2016-12-16 MX MX2019006927A patent/MX2019006927A/es unknown
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- 2016-12-16 BR BR112019012137-4A patent/BR112019012137B1/pt active IP Right Grant
- 2016-12-16 CN CN201680092082.4A patent/CN110300656B/zh active Active
- 2016-12-16 RU RU2019122035A patent/RU2741310C2/ru active
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Also Published As
Publication number | Publication date |
---|---|
RU2741310C2 (ru) | 2021-01-25 |
CN110300656A (zh) | 2019-10-01 |
CN110300656B (zh) | 2022-03-08 |
EP3556545B1 (en) | 2021-09-22 |
RU2019122035A3 (es) | 2021-01-18 |
US11440279B2 (en) | 2022-09-13 |
EP3556545A1 (en) | 2019-10-23 |
JP2020511327A (ja) | 2020-04-16 |
EP3556545A4 (en) | 2020-07-08 |
RU2019122035A (ru) | 2021-01-18 |
PT3556545T (pt) | 2021-12-29 |
JP6938635B2 (ja) | 2021-09-22 |
BR112019012137A2 (pt) | 2019-11-05 |
CA3047192A1 (en) | 2018-06-21 |
US20190329511A1 (en) | 2019-10-31 |
BR112019012137B1 (pt) | 2022-05-10 |
MX2019006927A (es) | 2019-09-18 |
ES2901799T3 (es) | 2022-03-23 |
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