DE4002667A1 - Water tight breathable footwear - has multiple layer inner lining upper turned over and stuck to welt sole - Google Patents

Abstract

The watertight breathable footwear has a breathable sole. An upper lining (2) made of a multi-layered material is turned over a leather welt sole (3) to achieve a good fit without being exposed to any danger of injury. The turned-in edge (5) produces few folds at the heel and toe. The outer upper (1) and lining upper are stitched to the shoe edge and to the tongue. ADVANTAGE - The quality of the turned-in edge can be easily monitored to ensure secure sealing of the upper.

Description

Description of the invention Waterproof, water vapor permeable footwear with water vapor permeable sole.

The invention relates to a midsole, the one Safe sealing of a feed shaft made of functional material and a water vapor permeable sole guaranteed.

Description of processing

The footwear consists of an outer shaft (S 1 ) which is made of leather or textile and a lining (FS) which is made of water-vapor-permeable 3-layer functional material.

The feed stock (FS) made of functional material is too closed make sure that the lasting fold (ZE) on the heel and lace creates as few wrinkles as possible.

The outer shaft (S 1 ) and the lining shaft (FS) are sewn on the shoe edge and on the tongue.

The outer shaft (S 1 ) and the lining shaft (FS) made of functional material are glued (KZ) over the insole (BS).

The midsole (ZS) is made of functional material the lasting wedge (ZE) of the feed shaft (FS) specially glued (SV).

The outer shaft (S 1 ) is glued (KZ) over the midsole (ZS).

If a leather sole (LS) is glued on (LK), too the water vapor permeability over the sole possible.

This processing is both heavy and possible with light shoes.

A particular advantage is that you can light and sporty shoes an unrestricted Variety of soles can choose.

It can also be pre-made rubber soles, or molded Find polyurethane soles; here, however, the water vapor permeability is only given over the shaft.  

Known processing

• 1. The production of a sock-like insert from functional material already brings problems during assembly and especially when welding in the sole area.
  • 1.1. If the functional insert is inserted into the upper before installing the sole, another problem arises: the insert can be pulled very easily over the edge of the insole when the upper is tweaked.
    As a result, the likelihood of damage to the functional insert is very high even during manufacture or after a short use.
  • 1.2. If, on the other hand, the insert is made up so tightly that the problem, as in 1.1. described, is small, on the other hand, there is a great risk that the insert will be damaged when inserting.
  • 1.3. If the functional insert is only inserted into the shoe after the sole has been installed, the risk of injury when inserting it is very high.
    To prevent this danger, a lot of glue is often used, for gluing and as a lubricant, with the result that the water vapor permeability is greatly reduced.
  • 1.4. The clean and wrinkle-free fit of the insert is a problem with all methods, which despite many efforts could never be solved satisfactorily.
• 2. In another method, a feed shaft with an outer shaft is pinch-glued over a last. The sole molded with liquid plastic from below must also take over the sealing of the shaft lining in this construction.
  There are a lot of sources of error here that can never be completely ruled out despite the strictest controls and a high failure rate is the result.
  Only thick soles can be produced, which is certainly not accepted by the consumer in many cases.
• 3. Problems with the sealing also arise with the method in which the sealing zone is sprayed with liquid plastic after sticking.
  Here, too, a large failure rate is known despite careful processing.

Advantages of the invention compared to previously known Methods

• 1. There is no need to produce an insert that is difficult to assemble and difficult to weld in the sole area.
  The insert also does not have to be inserted into the shoe, and insertion is not possible without the risk of injury.
• 2. The feed stock can go through the ledges Adhesive pinch can be adjusted precisely, also enables the lining to fit snugly on the shaft becomes.
• 3. A seal on the lasting of the feed shaft with the midsole is feasible and that Risk of injury to the functional material the following assembly steps practically excluded.

Claims (2)

1. Waterproof, water-vapor-permeable footwear with a water-vapor-permeable sole, in which a lining shaft made of functional material, the seams of which are welded to bands, is pinched with a leather insole over a last. Subsequently, a midsole functional material is adhered from below of the functional material waterproof, characterized in that the feed shaft of functional material is tweaked a leather insole and thereby obtains a good fit and is not exposed to risk of injury. The quality of the lasting impact is easy to control and therefore a secure sealing of the shaft is guaranteed. 2. Midsole according to claim 1 characterized in that the midsole is made of water vapor permeable functional material and only at the edge of the sole approx. 1.5 cm with the feed shaft is glued and therefore the predominant Part of the sole surface remains permeable to water vapor.