Classifications

• • 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
• • 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
  • A43B23/022—Plastics or artificial leather with waterproof breathable membranes
• • 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
• • 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
  • A43B23/026—Laminated layers
• • 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

Definitions

• the invention relates to a shoe lining with a laminate, its manufacture and shoes made therefrom.
• “Shoe” means footwear with a solid sole and a closed upper part (upper).
• “Lining” means the material on the inside of the shaft. In addition to the laminate, it can also contain one or more additional layers, e.g. Textile and leather. The layers can be more or less connected to one another.
• the bond can be full or partial, for example with or without a binder.
• shoe linings which consist of a laminate.
• the laminate can e.g. include a tricot made of polyamide, a microporous membrane made of PTFE and a velor made of polyamide (see table, ltd. No. 6).
• individual parts are cut out of the laminate web and then sewn and / or glued together (see EP-A2-0 263 665, column 1, lines 54-61 and EP-A2-0 080 710, in particular Fig 4 and finally EP-A2-0 110 627, example 1). Only with considerable effort (see US Pat. No. 4,599,810, FIGS. 4 and 5 together with FIG. 2) can it be avoided that water does not penetrate at these connection points.
• EP-A2-0 263 665 describes one-piece seamless textiles in the form of a shell or a hat insert which consist of a laminate of a water-permeable fabric and a water-impermeable but water-vapor-permeable film made of polytetrafluoroethylene (example 1 and column 3, lines 29-64 ).
• the deformation ratio for these objects is relatively small.
• Objects with a large forming ratio are produced by connecting two or more individual pieces (see column 4, lines 14 to 25 and example 3).
• Shoes should be made available which are largely impermeable to water but permeable to water vapor. This includes that the individual parts of the shoe such as the upper and sole meet this requirement and furthermore that these individual parts can be securely connected without water being able to penetrate. After all, the manufacture should be simple and cheap.
• “Seamless” means the absence of a connecting line, regardless of whether the two parts to be connected were connected by sewing, welding, gluing or otherwise.
• Layer is understood to mean a uniform mass in a planar extent at a certain height above, below or between others. It can e.g. is a film or the reaction product of a paste.
• the water impermeability is determined in accordance with the specifications of GB-PS 2 024 100 using a modified Sutter test apparatus and according to the "Mulli Burst Test". With the Sutter method, the water impermeability is assessed visually. A water pressure corresponding to a water column of 25 cm is applied to the laminate for 20 minutes. The Mullin assessment is also visual. A certain pressure is created in 10 seconds and this pressure is then maintained for 30 seconds. Withstanding an overpressure of approximately 213 kPa (2.1 atm) is believed to be acceptable.
• the water vapor permeability should be at least 1000, preferably at least 2000 g / m 2 day at 30 ° C. and 60% relative atmospheric humidity.
• “Fully drawn yarns” are yarns made from single filaments that do not contain a drawing zone in the force / elongation diagram.
• Diagonal means oblique, that is, neither parallel nor vertical.
• Forming ratio means the percentage ratio of the line lengths above the last to below the last, reduced by 100.
• Laminates with foils made of thermoplastic elastomers are particularly suitable for this, in view of the particularly low processing shrinkage, especially foils made from a copolyether ester, which consists of a large number of recurring intralearin long-chain ester units and short-chain ester units, which statistically end-to-end Ester bridges are connected, the long-chain ester units of the formula [-OGO- -R- -] and the short chain ester units of the formula [-ODO- -R- -] where G is a divalent radical which is formed by removing terminal hydroxyl groups of at least one long-chain glycol which has a molecular weight in the range from 800 to 6000 and an atomic ratio of carbon to oxygen in the range from 2.0 to 4.3, where at least 70% by weight of the long-chain glycol has a carbon: oxygen ratio in the range from 2.0 to 2.7, R is a divalent radical which is formed by removing carboxyl groups of at least one dicarboxylic acid with a
• foils have a thickness of 5 to 50 ⁇ m, in particular 10 to 25 ⁇ m.
• Their manufacture is e.g. in EP-A-0 111 360.
• At least one further layer of the laminate is a stretchable textile, as is usually the case with knitwear. the case is. Above all, it should enable good processing of the film or layer. If the elongation at break of the knitted fabric at 20 ° C in one direction is below the deformation ratio of the last and above in the other, the lasts must be aligned with the laminate web so that the heel / toe direction and the direction of the courses are arranged diagonally.
• a particularly low and even permanent stretch of the laminate - measured by the number of stitch and crochet rows per 1 cm - is obtained when using a knitted fabric. It is less than 60%, although the forming ratio is higher than 130%.
• the elongations differ by less than 50%, in particular by less than 30%, if one compares individual parts of the shoe lining with one another.
• the permanent elongation results from the construction shrinkage of the textile and not from the individual filaments, as can be the case with undrawn or partially drawn filaments.
• the knitted fabric and the film can be glued to one another in a punctiform or flat manner.
• Adhesives based on polyurethane or acrylate or hot-melt adhesives based on, for example, copolyesters or polyurethanes are suitable.
• the two-layer laminate can be connected to further layers, e.g. with a textile that later makes up the outermost inner layer in the finished shoe.
• a textile that later makes up the outermost inner layer in the finished shoe.
• another layer can be glued on later, e.g. when reshaping the laminate or when passing the twisted shoes on the last through a heat tunnel. In this case too, punctiform bonding is preferred.
• Thermoplastic polymers are suitable, e.g. Copolyesters or copolyamides.
• the shoe lining made of a laminate consisting only of a knitted fabric and a film can also be processed as a loosely suspended intermediate lining between the outer material and the outermost inner layer.
• the shaping of the laminate into the shoe lining takes place at 40 to 180 ° C. in 5 to 30 seconds, preferably between 60 and 150 ° C. in 15 seconds.
• the exact conditions depend on on the polymer of the film.
• the laminate is heated to these temperatures on an area of approximately 25 to 45 cm in width and 30 to 50 cm in length before it is drawn onto the temperature-controlled strips with a vacuum.
• the processing shrinkage i.e. the difference in dimensions between the last and the shoe lining
• the processing shrinkage is particularly small, especially when using foils made of polyether ester. It is at most 10%. Because of the low processing shrinkage, especially in the gusset area, the connection of the upper to the sole is facilitated by the relatively low formation of folds.
• the shoe lining according to the invention is characterized by the following positive effects: - Thanks to its seamlessness, it is certainly impermeable to water. - The shrinkage during production is very low, at most 10%. This true-to-shape forming facilitates further processing. In particular, a lasting wedge is formed so that the tweaking is simplified and the risk of water penetrating through the folds into the shoe is reduced. - The film is relatively thin, so the water vapor permeability is particularly high. - The permanent expansion of the laminate during thermal deformation is both parallel and perpendicular to the stitch direction in the various areas of the shaft, especially with a diagonal arrangement of the stitch direction to the heel / toe direction. Due to the uniform shaping, the durability of the laminate in the shaft is particularly high. - Even when further processing in the presence of high temperatures and / or water vapor, for example when passing through the fixing channel, there are no difficulties, for example due to shrinkage or material detachment. - Its manufacture is simple.
• the invention can be applied to other laminate moldings with a deformation ratio of at least 130% in one direction.
• the knitwear is characterized by: single jersey, grammage 50 - 60 g / cm2, made of fully stretched textured polyester filament yarn DIOLEN R with the titer 76 dtex f 24.
• the film is the polyetherester membrane SYMPATEX R with a thickness of 25 ⁇ m.
• a 10 g / m2 polyurethane adhesive dissolved in ethyl acetate is applied to the membrane in spots, the solvent is evaporated at 40 ° C. and then calendered at a roller temperature of approx. 80 ° C.
• the elongation at break of the knitwear was 66% longitudinally, 290% transversely and 92% diagonally (45 °).
• the laminate was deformed on a thermoforming machine over a shoe last.
• the thermoforming machine had a 40 x 50 cm stenter.
• a last for hiking shoes of size 71 ⁇ 2 was taken.
• the last was arranged diagonally (45 °) to the longitudinal direction of the knitwear.

Landscapes

• Health & Medical Sciences (AREA)
• Epidemiology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Materials Engineering (AREA)
• Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
• Laminated Bodies (AREA)
• Extrusion Moulding Of Plastics Or The Like (AREA)
• Rigid Pipes And Flexible Pipes (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=6393069

Family Applications (1)

Country Status (6)

Cited By (4)

Families Citing this family (3)

Citations (7)

Family Cites Families (1)

• 1989
  • 1989-11-07 DE DE3937106A patent/DE3937106A1/de not_active Withdrawn
• 1990
  • 1990-11-02 DE DE59007340T patent/DE59007340D1/de not_active Expired - Fee Related
  • 1990-11-02 EP EP90121000A patent/EP0434934B1/fr not_active Expired - Lifetime
  • 1990-11-02 AT AT90121000T patent/ATE112143T1/de not_active IP Right Cessation
  • 1990-11-07 PT PT95820A patent/PT95820B/pt not_active IP Right Cessation
  • 1990-11-07 JP JP2300006A patent/JPH03207301A/ja active Pending
  • 1990-11-07 CS CS905483A patent/CS548390A3/cs unknown

Patent Citations (7)

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