EP0036407A1 - Semelle pour chaussure et procédé pour sa fabrication - Google Patents

Semelle pour chaussure et procédé pour sa fabrication Download PDF

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Publication number
EP0036407A1
EP0036407A1 EP81890038A EP81890038A EP0036407A1 EP 0036407 A1 EP0036407 A1 EP 0036407A1 EP 81890038 A EP81890038 A EP 81890038A EP 81890038 A EP81890038 A EP 81890038A EP 0036407 A1 EP0036407 A1 EP 0036407A1
Authority
EP
European Patent Office
Prior art keywords
parts
sole
sole according
rigid parts
substantially rigid
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
EP81890038A
Other languages
German (de)
English (en)
Inventor
Johann Jun. Ehrlich
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DISTROPAT AG
Original Assignee
DISTROPAT AG
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 DISTROPAT AG filed Critical DISTROPAT AG
Publication of EP0036407A1 publication Critical patent/EP0036407A1/fr
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
    • A43B13/16—Pieced soles
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/02—Soles; Sole-and-heel integral units characterised by the material
    • A43B13/04—Plastics, rubber or vulcanised fibre

Definitions

  • Sole for shoes and process for making the same are Sole for shoes and process for making the same.
  • the invention relates to a sole for shoes, consisting of at least two essentially rigid parts which are connected to one another via flexible connecting parts.
  • Rigid soles are already known and have the advantage that they support the foot in an orthopedic manner.
  • the soles of the foot bed thereof a heel curvature, an inner joint support, an outer joint support, a metatarsal support, a ball trough, and / or Z e henbarriere have, all of these components must have a certain strength and stability in order to fulfill its tasks to can.
  • the material for such rigid soles is primarily wood, including laminated wood or pressed wood, but also cork, leather fiber materials and plastics, provided that they have the required strength.
  • the flexible connector to form a manure part from foamed polyurethane.
  • a connecting part made of polyurethane can be foamed directly onto the wooden parts, a secure and firm connection between the connecting part and the wooden parts being achieved without additional measures.
  • the present invention has for its object to provide a sole for shoes which has comparable properties with respect to the support of the foot to a sole consisting of two wooden parts connected by a flexible connecting part, but can be produced much cheaper.
  • the invention is based on a sole of the type described in the introduction and consists essentially in the fact that the essentially rigid parts consist of polymers having a cell structure and that the side faces of these rigid parts facing the flexible connecting parts open at least a few g have cells.
  • Such rigid parts are not only easy and cheap to produce, they also support the foot in an orthopedic manner and are cold-insulating, but it can also be easily established a secure connection with the flexible connecting parts, so that the desired flexibility in the ball area is guaranteed.
  • the essentially rigid parts have a cell structure with cells at least partially open on the connecting surfaces adjacent to the flexible connecting parts ensures that when the connecting parts are foamed during the foaming process, the material which has not yet hardened and forms the connecting parts or is preformed when glued Connecting parts the not yet hardened adhesive penetrates into the open pores and solidifies there, so that a mechanical connection between the essentially rigid parts and the flexible connecting parts is produced, which withstands the most severe stresses that occur. Bending tests on such soles have shown that the connection between the essentially rigid parts and the flexible connecting parts can also withstand a very large number of bending stresses.
  • the essentially rigid parts expediently consist of foamed polymers, in which case the production of these essentially rigid parts can be carried out in a simple manner by adding a blowing agent to the material or by producing a gas which acts as a blowing agent during the reaction itself.
  • a blowing agent such as fluorinated carbons or solid substances which release a gas under heat can be added to the material, whereupon this material is filled into a mold to form the essentially rigid parts and allowed to harden there.
  • the essentially rigid parts are made of polyurethane, they form the polyurethane
  • the reaction partner is formed during the hardening of carbonic acid, which acts as a blowing agent, so that a cell structure is formed.
  • the essentially rigid parts can be provided with fillers.
  • These fillers can be, for example, wooden parts, cork parts and / or leather parts, in particular leather fiber materials, that is to say substances which also have a cell structure.
  • the use of such fillers not only saves on polymeric material, but these fillers also stiffen and reinforce the essentially rigid parts and it is possible to achieve a special appearance of the surface of these parts with these fillers.
  • a cell structure is created by embedding the bubbles in the polymers, so that the same effect is achieved as when using foamed polymers.
  • the essentially rigid parts consist of polyurethane foamed in a mold.
  • a predominantly open-cell structure is formed, that is to say the cells formed are connected to one another so that the material or adhesive forming the flexible connecting parts can penetrate deep into the cells of the essentially rigid parts in the not yet hardened state and therefore a very strong mechanical connection is achieved.
  • the essentially rigid parts made of foamable and optionally filled with homopolymers, copolymers and copolymers with a hardness of more than 60 Shore D, such as polyvinyl chloride or polystyrene, exist. Although such materials have a predominantly closed-cell structure, that is to say the majority of the cells formed are not connected to one another, due to the large number of cells, a good mechanical connection to the flexible connecting parts can also be established here.
  • the flexible connecting parts consist of foamed polymers with a hardness of 26 to 98 Shore A, preferably from 45 to 78 Shore A and with a density of 0.3 to 0.95, preferably 0.45 to 0.78 .
  • a chemical connection can also be obtained by chemical reaction between the polymers which make up the essentially rigid parts, and achieve the pdymer of the connecting parts.
  • the use of foamed polymers for the production of the connecting parts has the advantage that, due to the cellular structure of the connecting parts, when compressing them during the bending of the sole on the upper side facing the sole of the foot there is no bulge which the wearer of the shoe provided with such a sole finds uncomfortable.
  • connecting parts are at least partially formed by the outsole, which then, together with the intermediate parts bridging the essentially rigid parts, expediently results in an extremely good connection between the individual essentially rigid parts.
  • the connecting parts namely the intermediate parts arranged between the essentially rigid parts, and preferably two se the outsole, which is formed in one piece at least in the front sole region, consists of conductive polymers, so that a sole is thereby formed, via which electrostatic charges of a person wearing such a sole are worn.
  • the electrostatic charge is derived at all possible positions of the person wearing such a shoe, that is to say especially when walking and when changing the foot position when standing, because even if the heel area of the sole is lifted off the floor due to a shift in weight or if the sole is raised on one side, part of the ball area of the sole is always with the foot of a person wearing a shoe provided with such a sole as well as with is in contact with the ground.
  • the arrangement is such that the width of the intermediate parts - measured in the longitudinal direction of the sole - is greater than the smallest width in the intermediate central area, at least in the edge area adjacent to the sole of the foot, preferably also in the edge area adjacent to the outsole .
  • This enlargement of the width of the intermediate parts in the edge regions has the advantage that the specific expansion or compression in the intermediate part becomes significantly less when the sole is bent and therefore tearing of the intermediate parts or loosening of the connection between the intermediate parts and the essential rigid parts is prevented.
  • this design makes the connection area between the intermediate parts and the substantially rigid parts larger than in an embodiment with the same width of the intermediate parts throughout, so that a better connection between the essentially rigid parts and the intermediate parts is ensured.
  • the two edge areas of the intermediate parts merge rounded into the middle area. This avoids sharp edges in which large tensile and compressive stresses occur when turning, which can lead to destruction of the intermediate parts in this area.
  • the edge areas of the intermediate parts expediently transition tangentially into the surface of the sole, so that there are no steps at the transition point, which are perceived as disruptive, particularly on the side of the sole on which the sole of the user rests.
  • the intermediate parts are symmetrical to a central axis running essentially perpendicular to the tread and preferably also to an axis running perpendicular to this central axis and running essentially in the longitudinal direction of the sole.
  • an anchoring body which runs transversely to the longitudinal direction of the sole and serves to connect the intermediate parts to the upper part of the shoe od.
  • an anchoring body, fastening part or the like can consist, for example, of a metallic high tension pin, but can also be formed from another material, for example from plastic or from wood.
  • anchoring body, fastening part or the like is well anchored in the intermediate parts on the one hand and on the other hand a firm connection of the upper part with the anchoring body, fastening part or the like is made possible, so that a secure connection of the upper part to the sole also in Area of the intermediate parts is guaranteed.
  • a separate anchoring body, fastening part or the like can be arranged in the area of each of the two lateral boundaries of the intermediate parts and extends only over a certain area into the interior of the intermediate parts. However, it is useful if in each intermediate part at least one over the entire width of the Anchoring body, fastening part or the like which extends between the parts is provided so that the upper part can be fastened to the two ends of the same anchoring body, fastening part or the like. In such an embodiment, a lateral pulling out of the anchoring body, fastening part or the like from the intermediate parts is prevented with certainty.
  • this anchoring body, fastening part or the like can be provided according to the invention with its ends extending to the lateral boundary of the intermediate part with openings which receive pins, nails penetrating the upper part of the shoe , Brackets, bolts or the like are determined.
  • screw bolts possibly those with a self-tapping thread, can be screwed into these openings, thereby ensuring a secure connection of the upper part to the anchoring body, fastening part or the like.
  • the anchoring body, fastening part or the like is provided with projections which protrude from the lateral boundaries of the intermediate parts and penetrate the upper part.
  • projections can have, for example, a screw thread onto which a screw nut can be screwed.
  • the connecting parts on the preformed substantially rigid parts foamed are placed in a mold, that elastomeric material, preferably polyurethane-forming material, is poured into or injected into the remaining parts of the mold, possibly under pressure, which material is allowed to harden when the mold is closed, and that after the sole has been removed, at least the surface facing the sole of the foot, preferably also the surface Side surfaces of the sole, for example by grinding or milling, are processed.
  • elastomeric material preferably polyurethane-forming material
  • the process according to the invention for the manufacture of the sole is such that the cells are opened in the side faces of the preformed, essentially rigid parts having a cell structure and having a cell structure, so that the cells are opened then these side surfaces and / or the adjacent side surfaces of the connecting parts are provided with an adhesive, for example two-component polyurethane or epoxy resin, and pressed, and that at least the surface facing the sole of the foot, preferably also the side surfaces of the sole, for example by grinding or milling , to be edited.
  • an adhesive for example two-component polyurethane or epoxy resin
  • the side surfaces of the preformed, essentially rigid parts adjacent to the connecting parts can be mechanically roughened.
  • the outer skin is not only removed and the open cell structure at least partially, but also any release agent adhering still from E ntformungs- operation forth on the surface of the substantially rigid parts is eliminated.
  • the cells can also be opened according to the invention in that the connection manure parts adjacent side surfaces of the preformed, substantially rigid parts are chemically pretreated by a solvent, for example dimethylformamide for parts made of foamed polyurethane or toluene for parts made of foamed polystyrene.
  • an adhesion promoter for example a polyurethane consisting of two components or an epoxy resin, is applied to the adjoining side faces of the essentially rigid parts and / or the flexible connecting parts.
  • FIG. 1 shows a sole designed according to the invention in a section in the longitudinal direction of the sole when used as an insole, over which the upper part is pinched
  • FIG. 2 when used as a sole, which simultaneously forms an insole and / or footbed
  • 3 shows the structure of an open-cell polyurethane foam with embedded fillers
  • FIG. 4 shows the structure of a closed-cell polystyrene foam in an enlarged view.
  • 1 and 2 consists of two essentially rigid parts 1, 2 which are connected by a flexible connecting part which is designed as an intermediate part 3 arranged between the mutually opposite end faces of the substantially rigid parts 1, 2, which is preferably made of polyurethane, but can also consist of other elastic materials, such as rubber or rubber.
  • Each of the two essentially rigid parts 1, 2 consists of a polymer having a cell structure, for example of foamed hard polyurethane or of foamed polyvinyl chloride or polystyrene.
  • Fillers can be embedded in these parts 1, 2, namely either wooden parts, cork parts and / or leather parts, in particular leather fiber works substances which reinforce the essentially rigid parts and give the surface of these parts a special appearance, or tiny bubbles, the thin shell of which consists of elastic vinylidene chloride copolymer and / or vinyl chloride copolymer and whose hollow core contains a gas, preferably air .
  • These bubbles also form a cell structure in the essentially rigid parts.
  • the essentially rigid parts 1, 2 are expediently produced in a mold, a suitable blowing agent being used to form the foam structure, and after the molding, the side faces of the essentially rigid parts which face one another are either roughened mechanically or treated chemically with a solvent, so that the cell structure is opened. These side surfaces are then connected to the intermediate part 3, which is symmetrical both with respect to a central axis 7 which runs essentially perpendicular to the tread and to an axis 8 which is perpendicular to this central axis and runs essentially in the longitudinal direction of the sole.
  • the width B of this intermediate part 3 in the edge regions that is to say the regions facing the surfaces 5, 6 of the sole, is greater than the smallest width b in the intermediate central region. As can be seen from the drawing, the two edge regions are rounded in the central region and tangentially in the surfaces 5, 6 of the sole.
  • the connecting part consists of the intermediate part 3 and the outsole 6 formed in one piece with it.
  • projections 9 extending on both sides essentially in the longitudinal direction of the sole protrude from the central region of the intermediate part 3 and are formed integrally with the intermediate part 3 are.
  • the lugs 9 are shown in a ball shape, but can also be dovetailed.
  • an anchoring body, fastening part or the like 10 is provided in the intermediate part 3, which extends to the lateral limitation of the intermediate part 3.
  • This anchoring body, fastening part or the like 10, which serves to firmly connect the upper part of the shoe also in the area of the intermediate part 3 to the sole, can be formed, for example, from a heavy-duty spring pin, which consists of a longitudinally slit metallic tube in the pins, nails, clamps, screws penetrating the upper part, in particular those with self-tapping threads or the like, can be anchored.
  • the anchoring body, fastening part or the like can be formed from a wooden pin in which nails are driven in or screws are screwed in, or from a plastic cylinder provided with openings, pins, bolts or the like also being provided in the openings.
  • the anchoring body, fastening part or the like 10 can be provided with projections projecting beyond the lateral boundaries of the intermediate part 3, which penetrate the upper part of the shoe and are then deformed to form a rivet head.
  • the approaches can also be provided with a screw thread onto which a screw nut is screwed.
  • connection of the essentially rigid parts 1, 2 with the intermediate part 3 in the embodiment according to FIG. 2 with the outsole 6 takes place either in that after opening the cell structure of the mutually facing side surfaces of the essentially rigid parts, these parts and optionally the anchoring bodies , Fastening parts or the like. 10 are inserted into a mold, polyurethane-forming material or another elastomeric material being poured or injected into the remaining part of the mold, which is then allowed to harden. This pours this poured or injected material into the open pores of the essentially rigid parts 1, 2, so that a good mechanical connection between these essentially rigid parts 1, 2 and the intermediate part 3 formed by curing the polyurethane-forming material and optionally the outsole 6 is formed.
  • a chemical connection is achieved by using a suitable chemical reaction.
  • the intermediate part 3, optionally with the outsole 6 can also be preformed and connected to the essentially rigid parts 1, 2 by gluing.
  • the cells of the side surfaces of the essentially rigid parts 1, 2, which are glued to the intermediate part 3 and, if appropriate, to the outsole 6, are first opened by mechanical or chemical pretreatment; thereupon the adhesive, which, for example, is made of two components consisting of polyurethane or an epoxy resin is applied and then the parts to be connected are pressed against each other.
  • the adhesive which, for example, is made of two components consisting of polyurethane or an epoxy resin is applied and then the parts to be connected are pressed against each other.
  • these parts can be made electrically conductive by appropriate additives so that static electricity is then derived from a shoe with such a sole Person.
  • a sole which consists of two essentially rigid parts 1, 2, which have a single intermediate part 3.
  • a plurality of intermediate parts 3 can also be provided in the bale area, the number of intermediate parts also thereby being determined parts connected essentially rigid parts increased.
  • the essentially rigid parts between adjacent intermediate parts can, however, be made very narrow, since all intermediate parts 3 are provided in the bale area.
  • FIG. 3 and 4 show an enlarged view of the foam structure of the essentially rigid parts 1, 2.
  • Fig. 3 shows a polyurethane foam with open cells 11, between which fillers are embedded, which are formed from tiny bubbles 12, the thin shell consists of elastic vinylidene chloride copolymer and / or vinyl chloride copolymer and whose hollow core contains a gas.
  • the surface 13, which is to be connected to the intermediate part 3, is either roughened mechanically or chemically pretreated after the production of the essentially rigid part 1, 2 so that both the cells 11 adjacent to this surface 13 and the smallest ones adjacent to this surface 13 Bubbles 12 are opened so that the surface 13 has open pores into which either the material forming this connecting part when the connecting part is foamed or the adhesive can penetrate when the prefabricated connecting part is glued on.
  • any fillers that is to say to produce the essentially rigid parts 1, 2 from polyurethane foam without the smallest blowers.
  • the essentially rigid parts 1, 2 consist of foamed polystyrene, which has closed cells 14.
  • the surface 13 is mechanically or chemically pretreated, as the said surface SS 13 adjacent closed cells 14 g e - are open and therefore the material of the connection part forming Getting Connected part at foaming this V or adhesive in adhering this verb indungsers ei ndr i n - can.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
EP81890038A 1980-03-07 1981-03-06 Semelle pour chaussure et procédé pour sa fabrication Ceased EP0036407A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT127580A AT379732B (de) 1980-03-07 1980-03-07 Sohle
AT1275/80 1980-03-07

Publications (1)

Publication Number Publication Date
EP0036407A1 true EP0036407A1 (fr) 1981-09-23

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EP81890038A Ceased EP0036407A1 (fr) 1980-03-07 1981-03-06 Semelle pour chaussure et procédé pour sa fabrication

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EP (1) EP0036407A1 (fr)
AT (1) AT379732B (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0064050A1 (fr) * 1981-04-29 1982-11-03 Johann Ehrlich Semelle de chaussure et procédé pour sa fabrication
EP0080456A2 (fr) * 1981-11-25 1983-06-01 Distropat Ag Semelle de chaussure, moule et procédé pour sa fabrication
EP0135496A2 (fr) * 1983-08-18 1985-03-27 Distropat Ag Semelle de chaussure
US5185602A (en) * 1989-04-10 1993-02-09 Cirrus Logic, Inc. Method and apparatus for producing perception of high quality grayscale shading on digitally commanded displays
FR2974482A1 (fr) * 2011-04-28 2012-11-02 Raphael Young Sa Chaussure a plateau

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2732391A1 (de) * 1976-07-20 1978-01-26 Johann Ehrlich Holz Und Kunsts Sohle fuer schuhe

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2732391A1 (de) * 1976-07-20 1978-01-26 Johann Ehrlich Holz Und Kunsts Sohle fuer schuhe

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0064050A1 (fr) * 1981-04-29 1982-11-03 Johann Ehrlich Semelle de chaussure et procédé pour sa fabrication
EP0080456A2 (fr) * 1981-11-25 1983-06-01 Distropat Ag Semelle de chaussure, moule et procédé pour sa fabrication
EP0080456A3 (en) * 1981-11-25 1985-11-27 Distropat Ag Shoe sole, mould and method for its manufacture
EP0135496A2 (fr) * 1983-08-18 1985-03-27 Distropat Ag Semelle de chaussure
EP0135496A3 (fr) * 1983-08-18 1985-12-11 Distropat Ag Semelle de chaussure
US5185602A (en) * 1989-04-10 1993-02-09 Cirrus Logic, Inc. Method and apparatus for producing perception of high quality grayscale shading on digitally commanded displays
FR2974482A1 (fr) * 2011-04-28 2012-11-02 Raphael Young Sa Chaussure a plateau

Also Published As

Publication number Publication date
AT379732B (de) 1986-02-25
ATA127580A (de) 1985-07-15

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Inventor name: EHRLICH, JOHANN JUN.