PU shoe sole laminating and forming process

A molding process and film-coating technology, which is applied to household components, applications, household appliances, etc., can solve problems such as manual repairs, and achieve the effects of increased production speed, clear patterns, and low energy consumption

Inactive Publication Date: 2017-01-11
佛山市创意新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a PU sole coating molding process, which aims to solve the problems of subsequent production processes such as manual repair and painting in the production process of the existing PU foam sole

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The present invention provides a kind of PU sole coating molding process, comprising the following steps:

[0019] Step (1): Place the PU film with a thickness of 0.045mm on the bottom mold of the mold evenly, then press the middle frame to cover the bottom mold, and fasten the hand buckle to fix it; in this embodiment, a PU film with a smaller thickness is selected. There is no need to heat the film paper, which saves energy consumption, and makes the pattern on the surface of the film paper clear and has a good three-dimensional effect.

[0020] Step (2): Vacuum the inner cavity of the mold so that the PU film is completely attached to the bottom mold. In the process of vacuuming, control the vacuum degree at about 0.1mbar to prevent the PU film from breaking due to excessive force. Make the PU film close to the bottom mold;

[0021] Step (3): heating the mold to make the temperature of the mold reach 70° C., while preheating the mold, discharge the condensed water a...

Embodiment 2

[0024] The present invention provides a kind of PU sole coating molding process, comprising the following steps:

[0025] Step (1): Place the TPU film with a thickness of 0.025mm on the bottom mold of the mold evenly, then press the middle frame to cover the bottom mold, and fasten the hand buckle to fix it; in this embodiment, a TPU film with a smaller thickness is selected. There is no need to heat the film paper, which saves energy consumption, and makes the pattern on the surface of the film paper clear and has a good three-dimensional effect.

[0026] Step (2): Vacuum the inner cavity of the mold so that the TPU film is completely attached to the bottom mold. In the process of vacuuming, control the vacuum degree at about 0.05mbar to prevent the TPU film from breaking due to excessive force. Make the TPU film close to the bottom mold;

[0027] Step (3): heating the mold to make the temperature of the mold reach 60° C., while preheating the mold, discharge the condensed w...

Embodiment 3

[0030] The present invention provides a kind of PU sole coating molding process, comprising the following steps:

[0031] Step (1): Place the TPU film with a thickness of 0.035mm on the bottom mold of the mold evenly, then press the middle frame to cover the bottom mold, and fasten the hand buckle to fix it; in this embodiment, a TPU film with a smaller thickness is selected. There is no need to heat the film paper, which saves energy consumption, and makes the pattern on the surface of the film paper clear and has a good three-dimensional effect.

[0032] Step (2): Vacuum the inner cavity of the mold so that the TPU film is completely attached to the bottom mold. In the process of vacuuming, control the vacuum degree at about 0.03mbar to prevent the TPU film from breaking due to excessive force. Make the TPU film close to the bottom mold;

[0033] Step (3): heating the mold to make the temperature of the mold reach 65° C., while preheating the mold, discharge the condensed w...

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Abstract

The invention provides a PU shoe sole laminating and forming process which comprises the following steps of: flatly putting film paper on a bottom mould of a mould, and pressing a middle frame to cover the bottom mould, and fixing by tensioning hand fasteners; carrying out vacuum-pumping on an inner cavity of the mould and enabling the film paper to completely fit to the bottom mould; heating the mould for increasing the mould temperature to 60-70 DEG C; and finally, pouring a polyurethane foaming stock solution into the mould cavity for foaming and forming the polyurethane foaming stock solution in a mould cavity, and cooling and de-molding, thereby obtaining the laminated PU foamed shoe sole. The PU shoe sole laminating and forming process can effectively solve the problems of bubbles, material deficiency, foamed grains, pits and pores generated in a PU foamed shoe sole production process, so that bright effect of products is improved.

Description

technical field [0001] The invention relates to a shoe sole processing technology, in particular to a PU shoe sole coating forming technology, which belongs to the field of shoe sole processing. Background technique [0002] PU (polyurethane, referred to as polyurethane) soles have low density, good elasticity, good compression ratio, not easy to deform, good dimensional stability and other advantages that cannot be replaced by other materials. Polyurethane production process is formed by foaming liquid raw materials through chemical reaction. Generally, polyurethane two-component liquid reaction molding process is adopted. The main chemical reactions of this process include gel exothermic reaction, foaming endothermic reaction and crosslinking reaction. During the reaction process, the use of material temperature, mold temperature, ambient temperature, catalyst and foaming agent will all affect the foaming effect and the quality of the sole. It is necessary to control the t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C44/12B29C44/34B29L31/50B29K75/00
CPCB29C44/12B29C44/3403B29K2075/00B29L2031/504
Inventor 江炳强
Owner 佛山市创意新材料科技有限公司
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