Classifications

• • A—HUMAN NECESSITIES
  • A43—FOOTWEAR
  • A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
  • A43D25/00—Devices for gluing shoe parts
  • A43D25/06—Devices for gluing soles on shoe bottoms
  • A43D25/07—Devices for gluing soles on shoe bottoms using flexible diaphragm pressing devices
• • A—HUMAN NECESSITIES
  • A43—FOOTWEAR
  • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
  • A43B7/00—Footwear with health or hygienic arrangements
  • A43B7/12—Special watertight footwear
• • A—HUMAN NECESSITIES
  • A43—FOOTWEAR
  • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
  • A43B9/00—Footwear characterised by the assembling of the individual parts
  • A43B9/08—Turned footwear
• • A—HUMAN NECESSITIES
  • A43—FOOTWEAR
  • A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
  • A43D11/00—Machines for preliminary treatment or assembling of upper-parts, counters, or insoles on their lasts preparatory to the pulling-over or lasting operations; Applying or removing protective coverings
  • A43D11/003—Applying or removing protective coverings

Definitions

• the present invention relates to a process for waterproofing semimanufactured shoes, clothing items and accessories, in particular during their manufacture.
• the present invention also relates to a device for carrying out said process and the semimanufactured products obtained with said process.
• the PCT application WO 00/22948 in the name of the same applicant 0 discloses a process for waterproofing leather and semimanufactured products made up of leather pieces sewed together.
• This known process comprises a pressing on the inner leather surface of at least one semi-permeable membrane whose surface contacting the leather is provided with a glue pattern. With this arrangement a suitable transpiration of the leather is obtained also in the areas 5 where it is glued to the membrane.
• the inside out turning and to the shaped member which is inserted before the pressing into the semimanufactured product it is possible to waterproof the latter also if it is already provided with a three-dimensional conformation.
• the semi-permeable membranes when pressed, can perfectly adhere to the surfaces of the semimanufactured product without any formation of pleats or wrinkles.
• the semi-permeable membranes if they extend beyond the semimanufactured product folded and flattened, can adhere to each other and form at least two strips that seal the semimanufactured product during the pressing.
• the semimanufactured product is perfectly waterproofed on its whole surface.
• Another advantage of the process according to the present invention lies in the fact of being carried out in a simple and quick way without particularly complex and expensive machines, so that it can be employed not only in the industrial production, but also in the handicraft production, in particular of shoes.
• the process can be carried out in a simple and effective way by a particular device comprising a pair of defonnable pressing plates.
• FIG. 1 shows perspective views of a shoe upper in the preliminary steps of the waterproofing process according to the first embodiment
• figure 2 shows a lateral view of the shoe upper of figure 1 during the pressing
• figure 3 shows a perspective view of the shoe upper of figure 1 after the pressing
• figure 4 shows a partial detailed view of the shoe upper of figure 1 after the pressing
• FIG. 5 shows a perspective view of a shoe upper in the preliminary steps of the waterproofing process according to the second embodiment
• figure 6 shows a lateral view of the shoe upper of figure 5 before the pressing
• - figure 7 shows a lateral view of the shoe upper of figure 5 during the pressing
• - figure 8 shows a lateral view of the shoe upper of figure 5 after the pressing.
• the shoe upper 1 turned inside out is folded and flattened along at least two lines 3, in particular corresponding to the intersection with a vertical symmetry plane, so as to obtain two opposing surfaces, which are substantially the same.
• a shaped member 4 of a deformable material in particular elastic and/or heat-resistant, such as silicone, soft rubber, neoprene or other foamy materials, is suitably inserted into the shoe upper 1.
• the shaped member 4 can also be provided with at least one bladder suitable for being inflated under pressure.
• the profile and the thickness of member 4 are suitably shaped so as to adhere to the inner surfaces of the shoe upper 1 and compensate their irregularities, if any.
• the shoe upper 1 turned inside out and internally provided with the shaped member 4 is arranged like a sandwich between at least one pair of sheets 5 of a semi-permeable membrane whose surface turned toward the shoe upper 1 turned inside out is provided with a glue pattern.
• the glue pattern of the semi-permeable membranes 5 can be thermally activated by the plates 6 of a flat press.
• the shoe upper 1 turned inside out and the semi-permeable membranes 5 are in fact pressed by plates 6, which are heated for the time necessary for the fusion of the glue pattern and its penetration into the material of the shoe upper 1.
• the glue pattern is made up of a plurality of dots of polyurethane glue, having a diameter comprised between 0,1 mm and 0,8 mm and a density comprised between 50 dots/cm 2 and 200 dots/cm 2 .
• the glue pattern may be made up of glue arranged according to dot matrixes or along mutually parallel and/or perpendicular lines.
• Membranes 5 are suitably made up of a sheet of a semi- permeable material, for instance made of polyurethane, polytetrafluoroethylene, polyester or other polymers, the thickness of which is preferably comprised between 5 ⁇ m and 100 ⁇ m.
• membranes 5 according to the present embodiment of the invention are made of polyurethane.
• they are preferably elastic, with a coefficient of elongation higher than 50%, particularly 100%, and they are not porous, since they carry out the water vapor passage by osmosis, and therefore, differently form the porous membranes, the water passage is prevented even when they are pulled or bent. Further information about membranes 5 is contained in the PCT application WO 00/22948 in the name of the same applicant.
• the surface of the semi -permeable membranes 5 which is not provided with the glue pattern is generally fastened to a support sheet (not shown in the figure) which avoids its possible accidental breakage or bending before the application.
• Said sheet can be made of paper and can be detachable after that membranes 5 have been adhered to the shoe upper 1.
• the support sheet can be made of different materials, for example fabric or a similar material, and be firmly fastened to membranes 5 if it is desired that the shoe upper 1 is internally lined at the end of the processing.
• the semi-permeable membranes 5 can extend beyond the profile of the shoe upper 1 so as to mutually adhere and form one or more strips 7 which seal the shoe upper 1 along the folding lines 3. If necessary, this sealing can be increased by gluing tapes of a waterproof material astride the. free edges of strips 7.
• the shoe upper 1 waterproofed with the membranes 5 can be separated from the shaped member 4 and turned for returning to the original conformation.
• the shaped member 4 can be further reused for the lamination of other shoe uppers having the same shape and the same size.
• the shoe upper 1 is turned inside out so that its inner surface 2 is turned outwards, so as in the first embodiment.
• the shoe upper 1 is not folded and flattened along lines 3, but it is arranged around a shaped member 8, which is rigid or semi-rigid and is preferably provided with a support rod 9 fixed to a portion of the shaped member 8 which is not covered by the shoe upper 1.
• the shaped member 8 has substantially the same shape of the finished semimanufactured product, for instance the shape of a shoe.
• the shoe upper 1 turned inside out and internally provided with the shaped member 8 is arranged like a sandwich between at least one pair of sheets 5 of a semi-permeable membrane provided with at least one glue pattern.
• a particular device according to the present invention which comprises a press provided with a pair of deformable plates 10.
• plates 10 comprise a box-like structure 11, for instance parallelepiped-shaped, provided with a pressing surface made up of an elastic sheet 12.
• the box-like structure 11 contains a fluid 13, for instance oil, under pressure and preferably heated.
• FIG 8 the shoe upper 1 is shown fastened to membranes 5, which can form one or more sealing strips 7.
• membranes 5 which can form one or more sealing strips 7. The rest of the process follows the above described process of the first embodiment.

Landscapes

• Health & Medical Sciences (AREA)
• Epidemiology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
• Treatment And Processing Of Natural Fur Or Leather (AREA)
• Professional, Industrial, Or Sporting Protective Garments (AREA)
• Outer Garments And Coats (AREA)

Priority Applications (8)

Applications Claiming Priority (2)

Related Child Applications (1)

Publications (1)

Family

ID=11445683

Family Applications (1)

Country Status (11)

Cited By (9)

Families Citing this family (29)

Citations (3)

Family Cites Families (21)

• 2000
  • 2000-08-07 IT IT2000MI001839A patent/IT1318737B1/it active
• 2001
  • 2001-07-31 CN CNB018137253A patent/CN100337567C/zh not_active Expired - Lifetime
  • 2001-07-31 EP EP01963380A patent/EP1307115B1/en not_active Revoked
  • 2001-07-31 AU AU2001284400A patent/AU2001284400A1/en not_active Abandoned
  • 2001-07-31 DE DE60115457T patent/DE60115457T2/de not_active Revoked
  • 2001-07-31 WO PCT/IT2001/000424 patent/WO2002011571A1/en active IP Right Grant
  • 2001-07-31 JP JP2002516923A patent/JP4782971B2/ja not_active Expired - Fee Related
  • 2001-07-31 ES ES01963380T patent/ES2252279T3/es not_active Expired - Lifetime
  • 2001-07-31 AT AT01963380T patent/ATE311124T1/de not_active IP Right Cessation
• 2003
  • 2003-02-05 US US10/358,465 patent/US20030115679A1/en not_active Abandoned
• 2004
  • 2004-03-25 HK HK04102216A patent/HK1059361A1/xx not_active IP Right Cessation
• 2008
  • 2008-01-09 US US11/971,286 patent/US20080127426A1/en not_active Abandoned

Patent Citations (3)

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