CS200990B1 - Method of producing the footwear - Google Patents

Description

BACKGROUND OF THE INVENTION The present invention relates to a method of manufacturing a footwear, in particular a home footwear, with an upper to which the seam is sewn after suturing and the sole is glued to the preform.

For the manufacture of home footwear, textile and rubber materials are used which are relatively easy to bond by gluing. Up to now, such shoes have been manufactured, for example, by suturing to the edge of the textile upper, also made of textile material. Then, a textile bead is sewn on the joined edges of the upper and the insole, which creates the finishing of the insole edge. The home-made semi-finished product is then referred to as a hoof and the contact surfaces of the insole and the trims with the sole are manually coated with glue. Depending on the type, thickness and accuracy of the textile materials used, this manual adhesive coating is optionally repeated one or more times using one or more types of solvent adhesives. The soles are made of, for example, microporous rubber cut-outs and are provided with an adhesive coating in a separate operation. In the ready-to-wear workshop, the glue coating is only activated in such a time sequence that the soles are well bonded to the hitherto active steal and hem-based adhesive coatings. This process is disadvantageous because the manual coating of the trim and in particular the relatively large area of the insole is very laborious and despite the various suction devices installed, this work is harmful to health.

Another disadvantage of this process is that the manual coatings of the adhesive are uneven. The glue soaks into the textile material according to the instant hand pressure applied to the brush and the speed of manual movement. This results in excessive adhesive consumption and unevenness

200 990

200 990 strength glued soles.

The above-mentioned disadvantages are eliminated by the method of making the shoe according to the invention, which consists in that the insole and the trim are provided with an adhesive mixture prior to sewing, an adhesive coating is formed on the contact surface of the insole and the sole.

The higher technical effect of the invention is that the necessary treatment of the insole and the hem for attaching the sole is carried out very productively by means of powerful machinery. This treatment of still flat insoles and edgings or materials intended for their production can advantageously be carried out in specialized plants with highly efficient exhaustion of volatile components of the adhesive mixtures. This increases work productivity and greatly improves the working environment in the ready-made workshop. The volatile volatile components can be recovered and recovered for the preparation of adhesive mixtures. The mechanical build-up of the adhesive or the impregnation of the adhesive mixtures are uniform, which contributes to the saving of the adhesive and the uniform strength of the glued soles.

In order to illustrate the embodiments of the shoe manufacturing method according to the invention described below, the attached drawing schematically illustrates household footwear, where FIG. 1 is a front elevation of the blank and FIG. 2 is a cross-sectional plane A-A of FIG.

Example 1

The upper 1, (fig. 1) of the home footwear is made of textile material and the insole 2 is sewn with a row of stitches 11 / fig. 2 /. Then the stitched edges of the upper]. and the insoles 2 sew the trim 2 to form a blank 10. The insoles 2 are punched out of the textile material and, before sewing or punching, an adhesive deposit 21 is machined on them. The edging 1 is also made of a textile material and an adhesive layer 31 is applied to its interface with the sole before sewing. The soles 4 ^are made of microporous rubber and are supplied to the ready-made workshop with a preformed adhesive film 41. The blanks 10 are then slid onto the hoofs together with the soles. 4 are inserted into an activation chamber (not shown). In the activation chamber, the adhesive 21 on the insole 2, the adhesive layer 31 on the bead 2, ^{and the} adhesive 41 on the sole 4 are heat activated. specific adhesion and pressure will create a permanent functional connection of the desired value. The hoof is then challenged and the production of home footwear is discontinued.

When glue 21 is used to form the deposition 21 on the stele 2 and the layers 31 on the bead 2, the so-called " adhesive " then only the adhesive film 41 on the soles 4 is activated.

Example 2

The blank 10 / FIG. 1) are made according to example 1. The insoles 2 are cut from a textile material previously impregnated with an adhesive mixture. Braid 2 ^e 3 also made of fabric impregnated and pre-adhesive composition. After hoof k, the blanks 10, together with the soles 4, are inserted into the activation chamber. In the activation chamber, the surface of the impregnation mixture is activated by heat on the contact surfaces of the insole 2 and the trim 2 ^{with the} sole 4 and the adhesive film 41 on the sole 4.

200 990

The sticking of the sole 6 is made according to Example 1.

The method according to the invention can be used in the manufacture of footwear, in particular with a textile insole and hem which can be coated with an adhesive or impregnated with an adhesive mixture prior to sewing. The bead can also be made directly of synthetic thermoplastic fibers. The surface of such a trim is thermally activated to a tacky state before the sole is glued.

Claims (3)

BACKGROUND OF THE INVENTION A method of making a shoe, in particular a home footwear, to the upper of which a lernovka is sewn upon sewing of the insole and a sole is adhered to the thus formed blank, characterized in that the insole and the lernovka are provided with an adhesive mixture before sewing. 2. A method according to claim 1, characterized in that an adhesive layer is formed on the contact surface of the insole and the sole with the sole. 3. A method according to claim 1, wherein the insole and lernovka are impregnated with an adhesive mixture.