WO2003106153A1 - Method for manufacturing a shoe with a polyurethane mid-sole coupled to a polymeric material tread, and shoe obtained with the method - Google Patents

Method for manufacturing a shoe with a polyurethane mid-sole coupled to a polymeric material tread, and shoe obtained with the method Download PDF

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Publication number
WO2003106153A1
WO2003106153A1 PCT/EP2003/005997 EP0305997W WO03106153A1 WO 2003106153 A1 WO2003106153 A1 WO 2003106153A1 EP 0305997 W EP0305997 W EP 0305997W WO 03106153 A1 WO03106153 A1 WO 03106153A1
Authority
WO
WIPO (PCT)
Prior art keywords
tread
sole
mid
shoe
polymeric material
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
PCT/EP2003/005997
Other languages
French (fr)
Inventor
Claudio Moscato
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.)
Individual
Original Assignee
Individual
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
Priority claimed from ITPD20020158 external-priority patent/ITPD20020158A1/en
Priority claimed from ITPD20020204 external-priority patent/ITPD20020204A1/en
Application filed by Individual filed Critical Individual
Priority to AU2003236716A priority Critical patent/AU2003236716A1/en
Priority to EP03735575A priority patent/EP1511615B1/en
Priority to DE60303447T priority patent/DE60303447D1/en
Publication of WO2003106153A1 publication Critical patent/WO2003106153A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • B29D35/06—Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising
    • B29D35/061—Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising by injection moulding
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/28—Soles; Sole-and-heel integral units characterised by their attachment, also attachment of combined soles and heels
    • A43B13/32—Soles; Sole-and-heel integral units characterised by their attachment, also attachment of combined soles and heels by adhesives
    • 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
    • B29D35/06—Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising
    • B29D35/08—Producing footwear having soles or heels formed and joined on to preformed uppers using a moulding technique, e.g. by injection moulding, pressing and vulcanising having multilayered parts

Definitions

  • the present invention relates to a method for manufacturing a shoe with a mid-sole made of polyurethane which is coupled to a tread made of polymeric material that overlaps the upper at least partially, in selected regions.
  • the invention also relates to the shoe obtained with the method.
  • Polyurethane is increasingly used because of its characteristic of retaining elastic memory over time (a characteristic that is absent for example in
  • shoes of this type are manufactured by injecting, directly into the mold, first the rubber tread and then the mid-sole for directly connecting the tread to the upper.
  • This kind of production method although being quick and cheap (the product is obtained directly by the molding step), by providing the tread first, prevents the tread from overlapping the upper, for example to provide an abrasion-resistant tip.
  • the tread and the mid-sole are provided in a mold individually and then, after trimming flash, washing, applying a primer and adhesives and drying them and carding the upper, the components are glued in an oven with reactivation of the adhesive.
  • the tread it is possible to provide the tread so as to form regions in which it makes direct contact with the upper, for example for an abrasion- resistant tip, but the process is long and complicated and economically scarcely convenient. Disclosure of the Invention
  • the aim of the present invention is to provide a method for manufacturing a shoe with a polyurethane mid-sole coupled to a tread made of polymeric material that overlaps the upper at least partially, in selected regions, and combines production speed, simplicity and low cost.
  • An object of the present invention is to expand the operating possibilities of the manufacture of shoes with a polyurethane mid-sole and a tread made of polymeric material.
  • Another object of the present invention is to provide a shoe with a polyurethane mid-sole and a tread made of polymeric material that can be manufactured with conventional equipment and systems.
  • a method for manufacturing a shoe with a polyurethane mid-sole coupled to a tread made of polymeric material that overlaps the upper at least partially, in selected regions which comprises the steps of:
  • Figure 1 is a side view of a shoe manufactured with the method according to the invention
  • Figure 2 is a longitudinal sectional view of a mold during the molding of the mid-sole
  • Figure 3 is a longitudinal sectional view of a mold during the molding of the mid-sole
  • Figure 4 is a transverse sectional view of the mold of Figure 3 during the molding of the mid-sole;
  • Figure 5 is a longitudinal sectional view of the shoe of Figure 1.
  • a method for manufacturing a shoe with a polyurethane mid-sole coupled to a tread made of polymeric material that overlaps the upper at least partially, in selected regions 15, consists of a step in which a polyurethane mid-sole 12 is injected in a mold 10 directly onto the upper 11 (all kinds of this material, both ethers and esters, can be used).
  • the tread 14 made of polymeric material in one or more colors is manufactured separately in a mold 13.
  • the polymeric material that composes the tread 14 can be nylon, PVC (polyvinylchloride), TPU (thermoplastic polyurethane), PU (polyurethane), TR (thermoplastic rubber) and various others.
  • the tread 14 is glued to the mid-sole 12 and to the upper 11 in the selected regions 15 that overlap it.
  • This gluing operation is preceded by steps for washing the mid-sole 12, applying a commonly used primer and adhesive and drying them, and by a carding of the upper 11 in the regions where the tread 14 is glued directly.
  • the gluing of the components is performed in an oven (not shown in the figures), with reactivation of the adhesive.
  • the shoe is therefore characterized in that its mid-sole 12 is injection- molded directly onto the upper 11 and the tread 14 (which can also be provided with a box-like configuration) is glued in regions 15 both to the mid-sole and to the upper.
  • the described method allows to manufacture a shoe that has a polyurethane mid-sole coupled to a tread made of polymeric material that overlaps the upper at least in regions by means of a smaller number of production steps than the second case cited in the introduction, with lower production costs.
  • Another advantage obtained is the expansion of the functional possibilities of the manufacture of shoes having a polyurethane mid-sole and a tread made of polymeric material with the possibility to manufacture tips, heel elements and lateral parts made of polymeric material that extend directly from the tread.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Polyurethanes Or Polyureas (AREA)

Abstract

A method for manufacturing a shoe with a polyurethane mid-sole (12) coupled to a tread (14) made of polymeric material that overlaps the upper (11) at least partially, in selected regions (15), comprising injecting the polyurethane mid-sole (12) inside a mold (13) directly onto the upper (11), separately molding the tread (14) made of polymeric material, and gluing the tread (14) to the mid-sole (12) and to the upper (11) in the regions (15) that overlap the upper. A shoe is disclosed obtained with the method.

Description

METHOD FOR MANUFACTURING A SHOE WITH A
POLYURETHANE MID-SOLE COUPLED TO A POLYMERIC
MATERIAL TREAD, AND SHOE OBTAINED WITH THE METHOD
Technical Field The present invention relates to a method for manufacturing a shoe with a mid-sole made of polyurethane which is coupled to a tread made of polymeric material that overlaps the upper at least partially, in selected regions.
Background Art The invention also relates to the shoe obtained with the method.
As is known, many currently commercially available shoes with a tread made of rubber, a material that has excellent abrasion resistance characteristics, also have a mid-sole between the tread and the upper that is commonly made of polyurethane, EVA or other similar materials that are light and soft but have limited resistance to abrasion and are therefore not suitable for contact with the ground.
Polyurethane is increasingly used because of its characteristic of retaining elastic memory over time (a characteristic that is absent for example in
EVA) and because of its biodegradability. In one production method, shoes of this type are manufactured by injecting, directly into the mold, first the rubber tread and then the mid-sole for directly connecting the tread to the upper.
This kind of production method, although being quick and cheap (the product is obtained directly by the molding step), by providing the tread first, prevents the tread from overlapping the upper, for example to provide an abrasion-resistant tip.
In another production method, the tread and the mid-sole are provided in a mold individually and then, after trimming flash, washing, applying a primer and adhesives and drying them and carding the upper, the components are glued in an oven with reactivation of the adhesive. In this case, it is possible to provide the tread so as to form regions in which it makes direct contact with the upper, for example for an abrasion- resistant tip, but the process is long and complicated and economically scarcely convenient. Disclosure of the Invention
The aim of the present invention is to provide a method for manufacturing a shoe with a polyurethane mid-sole coupled to a tread made of polymeric material that overlaps the upper at least partially, in selected regions, and combines production speed, simplicity and low cost. An object of the present invention is to expand the operating possibilities of the manufacture of shoes with a polyurethane mid-sole and a tread made of polymeric material.
Another object of the present invention is to provide a shoe with a polyurethane mid-sole and a tread made of polymeric material that can be manufactured with conventional equipment and systems.
This aim and these and other objects that will become better apparent hereinafter are achieved by a method for manufacturing a shoe with a polyurethane mid-sole coupled to a tread made of polymeric material that overlaps the upper at least partially, in selected regions, which comprises the steps of:
— injecting said polyurethane mid-sole inside a mold directly onto the upper;
— separately molding the tread made of polymeric material;
— gluing the tread to the mid-sole and to the upper in the regions that overlap said upper. Brief description of the Drawings
Further characteristics and advantages of the invention will become better apparent from the following detailed description of a preferred but not exclusive embodiment of the invention, illustrated by way of non-limitative example in the accompanying drawings, wherein: Figure 1 is a side view of a shoe manufactured with the method according to the invention;
Figure 2 is a longitudinal sectional view of a mold during the molding of the mid-sole;
Figure 3 is a longitudinal sectional view of a mold during the molding of the mid-sole;
Figure 4 is a transverse sectional view of the mold of Figure 3 during the molding of the mid-sole;
Figure 5 is a longitudinal sectional view of the shoe of Figure 1. Ways of carrying out the Invention With reference to the figures, a method for manufacturing a shoe with a polyurethane mid-sole coupled to a tread made of polymeric material that overlaps the upper at least partially, in selected regions 15, consists of a step in which a polyurethane mid-sole 12 is injected in a mold 10 directly onto the upper 11 (all kinds of this material, both ethers and esters, can be used). In another step, which does not necessarily follow the preceding one but can occur simultaneously or precede it, the tread 14 made of polymeric material in one or more colors is manufactured separately in a mold 13.
The polymeric material that composes the tread 14 can be nylon, PVC (polyvinylchloride), TPU (thermoplastic polyurethane), PU (polyurethane), TR (thermoplastic rubber) and various others.
In the final step, the tread 14 is glued to the mid-sole 12 and to the upper 11 in the selected regions 15 that overlap it.
This gluing operation is preceded by steps for washing the mid-sole 12, applying a commonly used primer and adhesive and drying them, and by a carding of the upper 11 in the regions where the tread 14 is glued directly.
The gluing of the components is performed in an oven (not shown in the figures), with reactivation of the adhesive.
The shoe is therefore characterized in that its mid-sole 12 is injection- molded directly onto the upper 11 and the tread 14 (which can also be provided with a box-like configuration) is glued in regions 15 both to the mid-sole and to the upper.
In practice it has been found that the invention thus described solves the problems described above.
In particular, the described method allows to manufacture a shoe that has a polyurethane mid-sole coupled to a tread made of polymeric material that overlaps the upper at least in regions by means of a smaller number of production steps than the second case cited in the introduction, with lower production costs.
Another advantage obtained is the expansion of the functional possibilities of the manufacture of shoes having a polyurethane mid-sole and a tread made of polymeric material with the possibility to manufacture tips, heel elements and lateral parts made of polymeric material that extend directly from the tread.
The invention conceived is susceptible of numerous modifications and variations, all of which are within the scope of the appended claims; all the details may further be replaced with other technically equivalent elements.
In practice, the materials employed, so long as they are compatible with the specific use, as well as the dimensions, may be any according to requirements and to the state of the art. The disclosures in Italian Patent Applications No. PD2002A000158 and
PD2002A000204 from which this application claims priority are incorporated herein by reference.

Claims

1. A method for manufacturing a shoe with a polyurethane mid-sole (12) coupled to a tread (14) made of polymeric material that overlaps the upper (11) at least partially, in selected regions (15), which comprises the steps of: - injecting said polyurethane mid-sole (12) inside a mold (13), directly onto the upper (11);
- separately molding the tread (14) made of polymeric material;
- gluing the tread (14) to the mid-sole (12) and to the upper (11) in the regions (15) that overlap said upper.
2. The method according to claim 1, characterized in that said gluing step is preceded by the steps for: washing the mid-sole (12); applying a primer and an adhesive and drying them; and carding the upper (11) in the regions where the tread (14) is glued directly.
3. The method according to claim 1, characterized in that said polymeric material that constitutes said tread (14) is selected from a group comprising
Nylon, PVC, TPU, PU and TR.
4. A shoe obtained with a method according to one or more of the preceding claims, characterized in that it comprises an injection-molded mid-sole (12) that is injection-molded directly onto an upper (11), and a tread (14) that is glued in selected regions (15) of the upper, both to the mid- sole (12) and to the upper (11).
PCT/EP2003/005997 2002-06-12 2003-06-06 Method for manufacturing a shoe with a polyurethane mid-sole coupled to a polymeric material tread, and shoe obtained with the method Ceased WO2003106153A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU2003236716A AU2003236716A1 (en) 2002-06-12 2003-06-06 Method for manufacturing a shoe with a polyurethane mid-sole coupled to a polymeric material tread, and shoe obtained with the method
EP03735575A EP1511615B1 (en) 2002-06-12 2003-06-06 Method for manufacturing a shoe with a polyurethane mid-sole coupled to a polymeric material tread, and shoe obtained with the method
DE60303447T DE60303447D1 (en) 2002-06-12 2003-06-06 METHOD FOR THE PRODUCTION OF A SHOE WITH A PU INSOLE AND THEREFORE ARRANGED PLASTIC OUTSOLE AND SHOE MANUFACTURED BY THIS METHOD

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
ITPD2002A000158 2002-06-12
ITPD20020158 ITPD20020158A1 (en) 2002-06-12 2002-06-12 PROCEDURE FOR THE REALIZATION OF A FOOTWEAR WITH A POLYURETHANE MIDSOLE COUPLED WITH A VULCANIZED RUBBER TREAD THAT IS
ITPD2002A000204 2002-07-25
ITPD20020204 ITPD20020204A1 (en) 2002-07-25 2002-07-25 PROCEDURE FOR THE REALIZATION OF A FOOTWEAR WITH A POLYURETHANE MIDSOLE COUPLED TO A TREAD IN POLYMERIC MATERIAL THAT

Publications (1)

Publication Number Publication Date
WO2003106153A1 true WO2003106153A1 (en) 2003-12-24

Family

ID=29738174

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2003/005997 Ceased WO2003106153A1 (en) 2002-06-12 2003-06-06 Method for manufacturing a shoe with a polyurethane mid-sole coupled to a polymeric material tread, and shoe obtained with the method

Country Status (5)

Country Link
EP (1) EP1511615B1 (en)
AT (1) ATE316862T1 (en)
AU (1) AU2003236716A1 (en)
DE (1) DE60303447D1 (en)
WO (1) WO2003106153A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2815668B1 (en) * 2012-02-17 2019-02-06 ASICS Corporation Shoe and manufacturing method therefor
FR3082103B1 (en) 2018-06-08 2020-08-28 Decathlon Sa METHOD OF MANUFACTURING A SHOE, AND SHOE LIKELY TO BE OBTAINED BY LEDIT PROCEDE

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4245406A (en) * 1979-05-03 1981-01-20 Brookfield Athletic Shoe Company, Inc. Athletic shoe
EP0745476A1 (en) * 1995-05-30 1996-12-04 NORDICA S.p.A. Method for obtaining a shoe, and shoe obtained with said method
US5785909A (en) * 1996-08-21 1998-07-28 Nike, Inc. Method of making footwear with a pourable foam
EP0937487A1 (en) * 1998-02-03 1999-08-25 Rollerblade, Inc. Skate with a molded boot

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4245406A (en) * 1979-05-03 1981-01-20 Brookfield Athletic Shoe Company, Inc. Athletic shoe
EP0745476A1 (en) * 1995-05-30 1996-12-04 NORDICA S.p.A. Method for obtaining a shoe, and shoe obtained with said method
US5785909A (en) * 1996-08-21 1998-07-28 Nike, Inc. Method of making footwear with a pourable foam
EP0937487A1 (en) * 1998-02-03 1999-08-25 Rollerblade, Inc. Skate with a molded boot

Also Published As

Publication number Publication date
DE60303447D1 (en) 2006-04-13
AU2003236716A1 (en) 2003-12-31
EP1511615A1 (en) 2005-03-09
ATE316862T1 (en) 2006-02-15
EP1511615B1 (en) 2006-02-01

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