CS260258B1 - Work out the basic instructions for making molds of sloped casting - Google Patents

Abstract

The three-part shin part of the hoof is removed from the prepared model, the inner part of the upper after the three-part shin part is removed is coated with epoxy resin with a crosslinker. The removed three-part shin part is inserted into the upper back and by moving the epoxy-coated upper along the separated three-part shin part, it is shaped into the desired shape.

Description

BACKGROUND OF THE INVENTION The present invention relates to the wrinkling of basic models for the manufacture of crimped molded shoe molds.

For the production of cast PVC footwear, the required number of molds is prepared by electroplating - by applying a nickel layer to the silver-plated surface of the model. From the basic model prepared by the modeling method, the mother mold is prepared in which multiple models are required for casting by the known technological process. The basic model consists of a waxy part of the hoof, a three-part shin part of the last made of rigid polyurethane foam and a stretched upper made of leather or a synthetic top material that tightly surrounds the surface of the wax portion of the hoof and the three-part polyurethane shin portion of the hoof. With respect to the surface of the prepared Basic Model, it determines the appearance of the finished product - cast footwear. The basic models thus prepared for the production of molds of cast footwear with a smooth or treaded surface enable the production of cast footwear with a more or less imitated appearance of leather. More faithful to the appearance of leather imitation in a cast shoe, it gives it a curl in the part of the shin, allowing a way of wrinkling the basic models to produce the molds of the cast shoe

Claims (1)

SUBJECT BACKGROUND OF THE INVENTION Basic models for making molds of crinkled molded footwear, characterized in that a three-part shin part (2) of the last is removed from the stretched upper (1) of the hoof, separated by a wax solution, the inner part of the stretched upper (1j). ) characterized in that a three-part shin part 2 of the hoof is removed from the stretched upper 1 of the model, separated by a wax solution, the wax part 4 of the hoof is left in the upper 1, the inner part of the stretched upper 1 is removed with epoxy resin 3 with the crosslinking agent, the re-assembled three-part shin portion 2 of the hoof is inserted and by shifting the epoxy resin-coated shin portion of the upper 1 over the separated three-part shin portion 2 of the hoof to form the desired wrinkle. The coating of epoxy resin 3 prior to its crosslinking allows the shin portion of the upper 1 to move along the three-part shin portion 2 of the last, even though the upper 1 is tightly wrapped around the last. After crosslinking, the coating of the epoxy resin 3 acts as a reinforcement of the crimped parts, preventing further undesirable deformation thereof and thus the cracking of the silver layer due to the hydrostatic pressure of the electrolyte in the galvanic vessel. However, it allows to remove the three-part shin part 2 of the hoof after the application of the nickel shell in the galvanic tank without breaking it. The wax portion 4 of the last is melted from the nickel shell by heating. In the drawing, FIG. 1 shows a cross-sectional view of a crouching model of the present invention. of the inventive hoof is coated with an epoxy resin (3) with a crosslinking agent, inserted into a wax-separated three-part shin portion (2) of the last and sliding the epoxy resin (3) of the painted shin portion of the upper jlj over the three-part shin portion. .