EP2353421A1 - Procédé de thermoscellage des tiges de chaussure avec une membrane perméable à la vapeur et dispositif à utiliser pour le thermoscellage conformément à ce procédé - Google Patents

Procédé de thermoscellage des tiges de chaussure avec une membrane perméable à la vapeur et dispositif à utiliser pour le thermoscellage conformément à ce procédé Download PDF

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Publication number
EP2353421A1
EP2353421A1 EP10195757A EP10195757A EP2353421A1 EP 2353421 A1 EP2353421 A1 EP 2353421A1 EP 10195757 A EP10195757 A EP 10195757A EP 10195757 A EP10195757 A EP 10195757A EP 2353421 A1 EP2353421 A1 EP 2353421A1
Authority
EP
European Patent Office
Prior art keywords
reservoir
core
membrane
accordance
heat sealing
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.)
Withdrawn
Application number
EP10195757A
Other languages
German (de)
English (en)
Inventor
Józef Sztorc
Stanislaw Mazurek
Tadeusz Sliwka
Wincenty Boryca
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.)
Lubelskie Zaklady Przemyslu Skorzanego Protektor Spolka Akcyjna
Original Assignee
Lubelskie Zaklady Przemyslu Skorzanego Protektor Spolka Akcyjna
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 Lubelskie Zaklady Przemyslu Skorzanego Protektor Spolka Akcyjna filed Critical Lubelskie Zaklady Przemyslu Skorzanego Protektor Spolka Akcyjna
Publication of EP2353421A1 publication Critical patent/EP2353421A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • A43B7/125—Special watertight footwear provided with a vapour permeable member, e.g. a membrane
    • 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
    • A43B23/06—Waterproof legs

Definitions

  • the subject of this invention is the method of heat sealing of footwear uppers with vapour permeable membrane and the device to be used for heat sealing in accordance with this method.
  • the purpose of heat sealing of these elements is to ensure the water-tightness of footwear semi - product in the form of the upper consisting of pieces of leather sewn together.
  • the water - tightness and vapour permeability is achieved by means of at least one vapour permeable membrane fastened on the inner surface of the upper i.e. the membrane enabling the vapour penetration in one direction only - outwards.
  • One surface of the membrane i.e. the surface contacting with leather is provided with thermosetting adhesive applied in the form of a pattern.
  • the elements being integrated are permanently welded together as a result of their compression together during certain period of time at increased temperature ensuring the activation of the adhesive.
  • This device incorporates the individual stands fastened to the common support structure plate and characterized by the shape and dimensions adapted to the specified three - dimensional element of the upper.
  • Each of these stands is provided with the column fastened on the plate; said column is provided with guide with sliding brackets: the lower bracket with the support representing three - dimensional shape of an element and upper bracket with the clamp adapted to this bracket and equipped with an actuator.
  • the support or clamp or the support and clamp incorporate the heaters, principally electrical heaters in order to enable their heating up to required temperature.
  • the heat sealing process is carried out when the elements to be heated are compressed together by means of the clamp.
  • the upper is laid onto the supports of successive stands of this device.
  • EP1635665 patent contains the description of the process and machine used to ensure the water-tightness of the footwear, clothing and accessories semi - product as well as the description of semi - product in the form of product obtained by means of aforesaid process or machine.
  • Presented machine is provided with pressing device incorporating with at least one pair of deformable plates incorporating the body with longitudinal opening; the pressing surface of the body is flexible and suitable for pushing out outwards by the pressurized liquid.
  • the deformable plates are fastened on the support structure in a manner enabling their rotation in order to open or close the pressing device around formed bracket to be used for the positioning of aforesaid semi - product during pressing process with at least one coat ensuring the water tightness.
  • the pressing device as well as formed bracket are provided with heating assemblies dedicated for activation of the thermosetting adhesive layer applied between the elements being integrated.
  • the formed bracket consists of movable members which can be displaced from each other to enable the change of its dimensions and adaptation to the uppers with diversified dimensions. Furthermore the bracket is provided with transport assembly ensuring its displacement along the rail to the pressing device.
  • the heat sealing process carried out on aforesaid machine consists in the insertion of the upper turned inside out and in the insertion of water resistant coat cut to the dimension of inner surface of the upper thereafter.
  • This coat is heat sealed in this condition after the application of boundary edges on each other.
  • the formed bracket with applied semi-product is transported to the pressing device area where the water resistant coat is subjected to the pressure of the hot pressing surface.
  • the thermosetting adhesive layer applied between the elements being integrated is activated as a result of the impact of pressurized hot air supplied inwards under the pressing surface and the elements are integrated together.
  • the pressing device is opened and integrated semi - product is transported together with formed bracket to the initial position where this semi - product is removed from the bracket and the next prepared semi - product inserted onto another formed bracket moving along another rail is transported to the pressing device area.
  • the essence of the invention consists in the method of heat sealing of footwear upper with vapour permeable membrane; wherein the upper consists of the pieces of leather, leather imitating material or textile material sewn together and forms a coat with closed sides and with three - dimensional configuration with human foot shape and wherein a vapour permeable membrane to be heat sealed with the inner surface of the upper, consists of at least one element made of elastic textile material is cut out in the shape of the inner surface of the upper and is spread with its two edges overlapping and enabling their heat sealing together; characterized in that the membrane prepared for heat sealing is inserted into the upper, the both elements are positioned to each other and preliminarily heat sealed together in at least one area wherein the upper and the membrane can be spread without any folds and wrinkles on supporting surface.
  • the preliminary heat sealing is carried out on the known device incorporating the bracket with supporting surface and the clamp heated to required temperature and used to compress the elements to be integrated together.
  • the upper prepared in this manner with preliminarily heat sealed membrane is inserted onto a heating and holding down member provided with expendable reservoir enabling the pressure of its external skin onto the inner surface of the membrane as a result of the pumping of gas into the reservoir under the pressure not higher than 0,1 MPa.
  • the extendable skin of the reservoir is heated up to the temperature not higher than 200°C and the pressure of this hot skin of the reservoir onto the membrane surface is maintained during the period required for the activation of thermosetting adhesive and its penetration to the contacting layers of upper and membrane.
  • the essence of the invention is also the device used for the heat sealing of footwear uppers with vapour permeable membrane and incorporating the support structure with the plate, characterized in that it incorporates the heating and holding down stem installed on the plate, pressure reducer with valve and temperature controller.
  • the heating and holding down stem applied for the insertion of the upper with the membrane placed inside for their heat sealing together, incorporates the core fastened to the plate; wherein said core incorporates: the heater and temperature sensor connected with electric temperature controller.
  • the core On its side surface, the core is provided with inserted flexible and extendable reservoir with at least one opening the boundary of which is fastened on the surface of this core in a tight manner.
  • the core incorporates an opening to be used for the supply of compressed gas from the compressed gas source via pressure reducer and valve.
  • the shape of the core is almost cylindrical and the flexible and extendable reservoir situated on the core is made of the material resistant to the impact of increased temperature of up to 200°C.
  • the reservoir is made of rubber resistant to the impact of operation in increased temperature.
  • the core incorporates the groove in its lower or upper part or with two grooves i.e. one grove situated in the lower and another in upper part of the core.
  • the circumference of the opening of extendable reservoir is laid in the groove and crimped by means of band clip in order to increase the tight fastening reliability.
  • the core is provided in its lower part with an offset with reduced diameter and with pressure ring located thereon.
  • the core is provided in its upper part with an offset with reduced diameter and with a strap located thereon, said strap is fastened on the core by means of screws.
  • the core is provided in its upper part with an attachment fastened on the core by means of screws.
  • the reservoir installed on the core is characterized by the shape similar to the section of cylindrical tube with the openings on the both ends.
  • the reservoir is characterized by the shape similar to the cylinder or three - dimensional body representing the shoe upper.
  • the faces of the reservoir i.e. lower and upper surface of the reservoir are formed as the flat or conical surfaces incorporating the openings enabling the insertion of the reservoir onto the core.
  • the circumference of the opening of the reservoir is fastened on the core, in its lower groove by means of band clip for crimping.
  • the circumference of the opening in the lower surface of reservoir is inserted onto the offset on the core; wherein the pressure ring is depressed and tight connection is achieved as a result of the fastening of the core on the plate.
  • the circumference of the opening in the upper surface of reservoir is fastened on the core in its upper groove in a manner identical to the lower groove.
  • the circumference of the opening in the upper surface of reservoir is inserted onto the offset on the core; wherein the strap is fastened to achieve the tight connection.
  • the fastened attachment enables the bulging of the reservoir upwards.
  • the method of heat sealing in accordance with the invention is characterized by several valuable advantages. Thanks to the application of an extendable reservoir with the skin after the pumping pressurized gas therein depressing onto the membrane surface, there is no need to use any lasts representing the human foot.
  • the pressure of the reservoir skin onto the membrane surface is exerted in an uniform manner within the whole surface area, irrespective of the size of the upper, its spatial layout and local roughness, therefore adequate pressure is ensured in each location and consequently, the correct heat sealing of the upper and membrane. Furthermore there is no need to turn the upper and membrane inside over. After their sealing together, the upper and membrane constitute the semi - product to be used for further assembling of footwear without any additional actions.
  • the heating and holding down stem heated up to adequate temperature is characterized by almost stabilized temperature due to the fact that said stem is located inside of the upper inserted thereon while the pressure is exerted and due to the fact the removal of integrated upper and insertion of the new one for heat sealing is carried out within extremely short period of time.
  • the heat leakage and consequently the heat losses are insignificant.
  • the correct temperature required for heat sealing process is maintained during the whole process in a stable manner.
  • the device in accordance with the invention is characterized by several advantages. Principally, its construction is very simple, therefore the device is widely used in the production of uppers in lower quantities but it can be also easily applied in automated production line in long run production. As a result of the incorporation of the heater inside the core with a pressure reservoir with flexible and extendable skin inserted thereon in a tight manner, the temperature of the whole heating and holding down stem consisting of aforesaid elements is maintained on required level ensuring the correct heat sealing.
  • Embodiment example for the method The parts to be sealed together are: an upper 1 consisting of leather pieces sewn together, constituting the skin closed on its sides and characterized by three - dimensional configuration with the shape of human foot as well as vapour permeable membrane 2, incorporating the thermosetting adhesive applied onto its surface to be heat sealed with inner surface of the upper 1, consisting of one element made of elastic textile material, cut out in the shape of the inner surface of the upper 1 and assembled with its two edges overlapping in the vicinity of the heel as well as heat sealed by means adhesive applied onto the surface of membrane 2.
  • the membrane 2 prepared for heat sealing is inserted into the upper 1, the both elements are positioned in relation to each other and preliminarily heat sealed in their central front part 35 i.e.
  • the hold down foot of the device for preliminary heat sealing is hot and the adhesive is activated by the heat released therefrom.
  • the upper 1 with membrane 2 is inserted onto the heating and holding down stem 5 provided with an extendable reservoir 12 maintaining the lower edge of the upper in the contact the plate 4 of the device for heat sealing.
  • the air with the pressure of 0,08 MPa is pumped into the reservoir 12 after the opening of valve 7; therefore the pressure of external skin of the extendable reservoir 12 is exerted onto the inner surface of membrane 2.
  • the extendable skin of the reservoir 12 is heated to the temperature of 130°C.
  • the pressure of hot surface of the reservoir 12 is maintained during about 30 s - the period of time required for activation of thermosetting adhesive and its penetration to the layers of upper 1 and membrane 2 contacting together.
  • the lever of valve 7 in the device of heat sealing is repositioned to its initial position and compressed air is discharged to ambient area; the upper 1 is removed together with integrated membrane 2 thereafter.
  • Example I The device consists of the support structure 3 with plate 4, the heating and holding down stem 5 installed on the plate 4, pressure reducer 6 with valve 7 and temperature controller 8.
  • the heating and holding down stem 5 consists of the core 9 made of duralumin in the shape of cylinder with the dimensions: diameter / height equal to 80/200 up to 100/310 mm. These dimensions depend on the sizes of parts to be heat sealed together: upper 1 and membrane 2. In the example of embodiment the diameter of the core is equal to 80 mm and the height is equal to 200 mm.
  • the core 9 is fastened to the plate 4 by means of screws 25 screwed into threaded openings 25'.
  • the openings 10' and 11' in the core 9 incorporate the following: heater 10 and temperature sensor 11.
  • the electric heater 10 with the power supply voltage of 250V and power of 800W is installed in metal housing.
  • PT-100 temperature sensor has been applied.
  • the heater 10 and temperature sensor 11 are integrated with electric temperature controller 8 by means of the conductors 26, 27; the purpose of said controller is the setting of operation temperature of the heating and holding down stem 5. This temperature is equal to 130°C for the membranes 2 with applied adhesive.
  • the core 9 On its side cylindrical surface, in its lower and upper part, the core 9 is provided with circumferential groves 15 and the flexible and extendable reservoir 12 inserted thereon and made of cylindrical section of rubber tube resistant to the impact of temperature up to 200°C, with the diameter greater than diameter of the core 9 by 6 mm.
  • the thickness of the rubber wall of the reservoir 12 is equal to 2 mm.
  • This reservoir is provided with the openings 13 in its lower and upper part and the circumferences at these openings 13 are laid in the grooves 15 in the lower and upper part of the core 9 and crimped by means of band clips 28 in a tight manner.
  • the core 9 incorporates an opening 14 provided with a threaded seat 32 in its lower part and with outlet in its upper part; said outlet oriented toward the external surface of the core 9, is used for the supply of compressed air from the compressed air source to the extendable reservoir 12 via the pressure reducer 6, connecting conductor 29, valve 7 and flexible conductor 30 with end piece 31 screwed in the seat 32.
  • the applied pressure reducer 6 enables the pressure reduction i.e.
  • the device is provided with, not illustrated in the drawing, protective enclosure to be inserted after the completion of work onto the heating and holding down stem 5 in order to avoid the burning in case of touching of said stem.
  • Example II In its variant solution illustrated in Fig. 6 , the core 9 is provided in its lower part with an offset 16 with reduced diameter and with pressure ring 17 located thereon. In the slot between faces of the offset 16 and pressure ring 17, before the fastening of the core 9 on plate 4, the circumference of the opening 13 is inserted, said opening is made in the lower face 22 of one from among variant solutions of the reservoir 12. After the fastening of the core 9 on plate 4, the circumference of the opening 13 of the reservoir 12 is integrated with core 9 in a tight manner. In its upper part the core 9 is provided with an offset 18 with reduced diameter and with strap 19 located on said offset. In the slot between faces of the offset 18 and strap 19, the circumference of upper opening 13 is inserted, said opening is made in the upper face 23 of the reservoir 12.
  • Example III In the next variant solution illustrated in Fig. 8 , the fastening of the reservoir 12 in the lower part of the core 9 is identical to that proposed in Example II.
  • the core 9 is provided with attachment 21 fastened by means of screws 20.
  • the upper surface 23 of the reservoir 12 is integrated with core 9 in a tight manner.
  • the attachment 21 enables the bulging of the reservoir 12 upwards after the compressed air supply.
  • the applied reservoir 12 in its upper face 23 is provided with the openings 24 to enable the penetration of screws 20 fastening the attachment 21.
  • the flexible and extendable reservoir applied in the device can be also made in various variant solutions:

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  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
EP10195757A 2010-02-08 2010-12-17 Procédé de thermoscellage des tiges de chaussure avec une membrane perméable à la vapeur et dispositif à utiliser pour le thermoscellage conformément à ce procédé Withdrawn EP2353421A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL390368A PL214631B1 (pl) 2010-02-08 2010-02-08 Sposób zgrzewania cholewki obuwia z membrana paroprzepuszczalna i urzadzenie do zgrzewania wedlug tego sposobu

Publications (1)

Publication Number Publication Date
EP2353421A1 true EP2353421A1 (fr) 2011-08-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP10195757A Withdrawn EP2353421A1 (fr) 2010-02-08 2010-12-17 Procédé de thermoscellage des tiges de chaussure avec une membrane perméable à la vapeur et dispositif à utiliser pour le thermoscellage conformément à ce procédé

Country Status (2)

Country Link
EP (1) EP2353421A1 (fr)
PL (1) PL214631B1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10314362B2 (en) 2015-08-13 2019-06-11 W. L. Gore & Associates, Inc. Booties and footwear assemblies comprising seamless extensible film, and methods therefor
US10314353B2 (en) 2015-08-19 2019-06-11 W. L. Gore & Associates, Inc. Conformable seamless three dimensional articles and methods therefor
CN111329183A (zh) * 2015-05-31 2020-06-26 耐克创新有限合伙公司 作为原点的鞋楦延伸件
US11382391B2 (en) 2015-05-31 2022-07-12 Nike, Inc. Shoe last extension as an origin
US11596206B2 (en) 2015-05-31 2023-03-07 Nike, Inc. Shoe last extension

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190927133A (en) * 1909-11-22 1910-03-24 August Hermann Max Grune A Pneumatic Treeing-machine for Boots and Shoes.
DE10031827C1 (de) * 2000-06-30 2002-01-17 Helix Schuhfabrik Gmbh & Co Wasserdichter Schuh mit einem vorgeformten Boden sowie Verfahren und Vorrichtung zu dessen Herstellung
EP1635665A1 (fr) 2003-06-20 2006-03-22 Nextec S.r.l. Procede et machine d'impermeabilisation d'articles chaussants, d'articles vestimentaires et d'accessoires semi-finis, et produits semi-finis obtenus au moyen de ce procede ou de cette machine
WO2007007369A1 (fr) * 2005-07-14 2007-01-18 Nextec S.R.L. Chaussures imperméables et procédé pour les fabriquer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190927133A (en) * 1909-11-22 1910-03-24 August Hermann Max Grune A Pneumatic Treeing-machine for Boots and Shoes.
DE10031827C1 (de) * 2000-06-30 2002-01-17 Helix Schuhfabrik Gmbh & Co Wasserdichter Schuh mit einem vorgeformten Boden sowie Verfahren und Vorrichtung zu dessen Herstellung
EP1635665A1 (fr) 2003-06-20 2006-03-22 Nextec S.r.l. Procede et machine d'impermeabilisation d'articles chaussants, d'articles vestimentaires et d'accessoires semi-finis, et produits semi-finis obtenus au moyen de ce procede ou de cette machine
WO2007007369A1 (fr) * 2005-07-14 2007-01-18 Nextec S.R.L. Chaussures imperméables et procédé pour les fabriquer

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111329183A (zh) * 2015-05-31 2020-06-26 耐克创新有限合伙公司 作为原点的鞋楦延伸件
CN111329183B (zh) * 2015-05-31 2022-04-26 耐克创新有限合伙公司 作为原点的鞋楦延伸件
US11382391B2 (en) 2015-05-31 2022-07-12 Nike, Inc. Shoe last extension as an origin
US11596206B2 (en) 2015-05-31 2023-03-07 Nike, Inc. Shoe last extension
US11844403B2 (en) 2015-05-31 2023-12-19 Nike, Inc. Shoe last extension as an origin
US10314362B2 (en) 2015-08-13 2019-06-11 W. L. Gore & Associates, Inc. Booties and footwear assemblies comprising seamless extensible film, and methods therefor
US10314353B2 (en) 2015-08-19 2019-06-11 W. L. Gore & Associates, Inc. Conformable seamless three dimensional articles and methods therefor
US11154105B2 (en) 2015-08-19 2021-10-26 W. L. Gore & Associates, Inc. Conformable seamless three dimensional articles and methods therefor
US11785998B2 (en) 2015-08-19 2023-10-17 W. L. Gore & Associates, Inc. Conformable seamless three dimensional articles and methods therefor

Also Published As

Publication number Publication date
PL390368A1 (pl) 2011-08-16
PL214631B1 (pl) 2013-08-30

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