TWI747940B - Shoe material structure and dyeing method thereof - Google Patents

Abstract

A dyeing method of shoe material structure includes the following steps: attaching a transfer paper to the part to be dyed of the shoe material structure, wherein the shoe material structure has the characteristics of thermal plasticity; The printing paper is heated and pressurized to sublime and vaporize the dye-containing pattern on the transfer paper from the solid state and penetrate into the shoe material structure, so that the surface of the shoe material structure forms a surface with a dyed pattern. In this way, on the basis of maintaining the material characteristics of the shoe material, the dyeing operation can be completed quickly and the color effect of the shoe material can be improved.

Description

Method for dyeing shoe material structure

The invention relates to shoe materials; in particular, it refers to a dyeing method applied to shoe materials and its structure.

The known shoe structure is composed of an upper and a sole. The shoe upper is used to cover the foot and firmly fix the foot on the sole. The sole is located under the sole of the foot to support the foot, and includes an outsole that contacts the ground, and a midsole between the outsole and the upper.

Thermoplastic polyurethanes (TPU for short), also known as thermoplastic polyurethanes, are commonly used in the market to make outsoles and midsoles. TPU has excellent wear resistance, elasticity, tear resistance, bending strength, tensile strength, high elongation at break, low compression set, low temperature resistance (-50°C), oil resistance, aliphatic solvent resistance, carbon resistance Hydrogen solvent, resistance to oxygen and odor, anti-aging...etc. In addition, TPU is a mature and environmentally friendly material that does not contain plasticizers. It is also a polymer elastomer. Its elasticity is between rubber and plastic materials and has the best physical properties among existing rubber and plastic materials.

When TPU soles are used for dyeing applications, color dyes (inks) are mostly applied to the surface of the soles by liquid printing. However, after the color dyes are dried, the surface of the soles will be rough and reduce the original air permeability and heat dissipation characteristics of the TPU material. In some cases, blurring or even the color effect of the ink is not clear. If you change the TPU shoes by soaking Soaking the sole in the color dye not only needs to wait a long time to complete the dyeing, which will reduce the production efficiency, but also cause the dyed sole to reduce the characteristics of the original TPU material due to the barrier of the dye. When individual TPU soles are dyed, at most only two colors can be obtained.

In view of this, the purpose of the present invention is to provide a method for dyeing shoe materials, which can greatly improve the dyeing efficiency and the coloring effect of shoe materials without affecting the material characteristics of the shoe materials.

In order to achieve the above-mentioned object, the present invention provides a method for dyeing shoe materials including the following steps: attaching a transfer paper to the part to be dyed on the shoe material; transferring the dye-containing pattern on the transfer paper through the hot-press transfer method, from The solid sublimation vaporizes and penetrates into the shoe material, and the surface of the shoe material forms a surface with a dyed pattern.

In order to achieve the above-mentioned objective, the present invention provides a shoe material structure comprising a main body and a dye; wherein the main body has thermoplasticity; the molecules of the dye are dispersed inside the main body.

In order to achieve the above-mentioned object, the present invention provides a shoe material structure in which a dye-containing pattern on a transfer paper is penetrated into the shoe material by a hot-press transfer method.

The effect of the present invention is to sublime the dye on the transfer paper from solid to vaporization through the hot-press transfer method, and penetrate into the interior of the main body with thermoplasticity, so that the dye molecules are dispersed in the main body, so as to maintain the material characteristics of the shoe material. Based on the foundation, the dyeing operation can be completed quickly and the color effect of the shoe material can be improved.

〔this invention〕

100: shoe material structure

10: main body

101: Internal

102: top surface

10a: structural molecule

20a: Structural molecules of dyes

40: main body

40a, 40b: structural molecules

30a: Structural molecules of dyes

Fig. 1 is a perspective view of a shoe material structure according to a preferred embodiment of the present invention, revealing that the top surface of the shoe material structure is a dyed part.

Figure 2 is an enlarged view showing the internal molecular composition of the shoe material structure of Figure 1.

Figure 3 is an enlarged view showing the internal molecular composition of another shoe material structure.

Fig. 4 is a schematic diagram of an embodiment, revealing that the top surface of the shoe material structure is a dyed part.

Fig. 5 is a schematic diagram of an embodiment, revealing that the shoe material structure is applied to the shoe style, and the peripheral side of the shoe material structure is the dyed part.

Fig. 6 is a schematic diagram of an embodiment, revealing that the top surface of the shoe material structure is a dyed part.

Fig. 7 is a schematic diagram of an embodiment, revealing that the bottom surface of the shoe material structure is a dyed part.

Fig. 8 is a schematic diagram of an embodiment, revealing that the bottom surface of the shoe material structure is a dyed part.

Fig. 9 is a schematic diagram of an embodiment, revealing that the bottom surface, the bottom surface and the peripheral side surface of the shoe material structure are dyed parts.

Fig. 10 is a schematic diagram of an embodiment, revealing that the bottom surface, the bottom surface and the peripheral side surface of the shoe material structure are dyed parts.

Figure 11 is a flow chart of the dyeing method of the shoe material structure.

Figure 12 is a flow chart of the dyeing method of the shoe material structure.

In order to explain the present invention more clearly, a preferred embodiment is given in conjunction with the drawings in detail as follows. Please refer to FIG. 1 and FIG. 2, which shows a shoe material structure according to a preferred embodiment of the present invention, which is a shoe sole that can be used as a midsole or an outsole. Wherein, the shoe material structure 100 includes a main body 10 and a dye.

The main body 10 is made of a material with thermoplasticity. In this embodiment, the material is selected from Thermoplastic polyurethanes (TPU for short). In other embodiments, it can also be made of other materials with thermoplastic properties, and is not limited to the materials mentioned in this embodiment. It is mentioned that the main body 10 can be colored in a transparent or opaque manner according to the appearance requirements.

The dye has a color, the structural molecule 20a of the dye is smaller than the structural molecule 10a of the main body 10, the structural molecule 20a of the dye is smaller than the gap between the structural molecules 10a of the main body 10, and the structural molecules 20a of the dye are scattered on the main body 10 The outer surface layer and the inner layer 101 are arranged irregularly between the structural molecules 10a of the main body 10. In this embodiment, the top surface 102 of the main body 10 is taken as an example.

As shown in FIG. 3, in other embodiments, the size of the structural molecule 30a of the dye is much smaller than that of the structural molecules 40a and 40b of the main body 40, and the volume of the structural molecule 30a of the dye is smaller than the gap between the structural molecules 40a and 40b of the main body 40 . The structural molecules 30a of the dye are not only scattered between the structural molecules 40a of the main body 40, but also penetrate part of the structural molecules 40a of the main body 40, so that the structural molecules 40a of the main body 40 are colored. In other words, among the structural molecules 40a and 40b of the main body 40, the color of part of the molecule 40b remains the original color, and the part of the molecule 40a has the color of the dye.

The aforementioned two structural arrangements allow the main body to maintain the original characteristics of the TPU material without being disturbed by the dye, and allow the color of the dye to be revealed on the outer surface and inside of the shoe material structure.

The dyeing method of the above-mentioned shoe material structure is explained below.

Generally speaking, the dyeing process of the shoe material structure is the same as that shown in Figure 11 and Figure 12, that is, the material is prepared and placed first, the shoe material structure is placed on a heat press, and then a transfer paper is attached to the The part to be dyed on the structure of the shoe material. Among them, the shoe material structure has an opposite one A top surface and a bottom surface, and a peripheral side surface located between the top surface and the bottom surface. The operator can affix the transfer paper to at least one of the top surface, bottom surface or peripheral side of the shoe material structure according to requirements.

Then, heat and pressurize the part to be dyed and the transfer paper in a thermal press transfer method through a heat press, so that the pattern containing the dye on the transfer paper is sublimated and vaporized from the solid state and penetrated into the shoe material structure.

Finally, the outer surface and the inner surface of the shoe material structure are formed with a dyed pattern.

Figures 6 to 10 show the contents of various finished shoe material structures after dyeing. Among them, the content shown in Figure 6 is to transfer the dye pattern to the top surface of the shoe material structure; the content shown in Figures 7 and 8 is to transfer the dye pattern to the bottom surface of the shoe material structure; Figure 9 The content shown in Figure 10 is to transfer the dye pattern to the top, bottom and peripheral sides of the shoe material structure.

One thing to mention is that when performing the above dyeing method, the hot pressing time during the hot pressing is between 5 seconds and 100 seconds; the hot pressing pressure is between 1.5kg/cm ² ~4kg/cm ² ; the hot pressing temperature It is between 60°C and 200°C. Preferably, the heat pressing temperature is maintained at 130°C to prevent the shoe material structure or transfer paper from melting due to overheating.

Another thing to mention is that there are many ways to heat and pressurize the parts to be dyed and the transfer paper by a heat press, for example, driving a roller on the surface of the shoe material structure and the transfer paper, or driving the upper and lower molds up and down Press the shoe material structure, and indirectly heat the shoe material structure and the transfer paper through the heating roller or the mold, so that the dye on the transfer paper sublimates and vaporizes from the solid state and penetrates into the shoe material structure.

Through the above-mentioned dyeing method of the shoe material structure, the dye pattern on the transfer paper can be formed on the outer surface of the shoe material structure, and the dye on the heat transfer paper can be sublimated and vaporized from the solid state. It penetrates into the interior of the shoe material structure through pressure, so that the dye and the structural molecules in the shoe material structure are fused, and the adhesion of the dye to the interior and surface of the shoe material structure is greatly improved without affecting the characteristics of the original material (TPU). It is stable, and avoids the color pattern falling off and mottled. In addition, due to the heat and pressure of the heat press, the outer surface of the shoe material structure can maintain good flatness after being heated and pressurized.

The above are only the preferred and feasible embodiments of the present invention. Any equivalent changes made by applying the specification of the present invention and the scope of the patent application should be included in the patent scope of the present invention.

100: shoe material structure

10: body

Claims (7)

A method for dyeing a shoe material structure, wherein the shoe material structure includes a main body; the dyeing method of the shoe material structure includes the following steps: attaching a transfer paper to the part to be dyed of the main body, and the main body is made at the time of manufacturing. Color formation in a transparent manner; and transfer the pattern containing the dye on the transfer paper through the heat and pressure transfer method, and the volume of the structural molecules of the dye is smaller than the gap between the main structural molecules, and a part of the structural molecules of the dye is scattered among the structural molecules of the main body At least a part of it penetrates into part of the structural molecules of the main body, so that the structural molecules of the main body are colored; the dye sublimates and vaporizes from the solid state and penetrates into the main body, and the surface of the main body forms a surface with a dyed pattern, wherein the The hot pressing temperature is 60° C. to less than 130° C., and the hot pressing pressure of the hot press transfer is 1.5 kg/cm ² to less than 4 kg/cm ² , and the material of the main body is selected from thermoplastic polyurethane. The dyeing method of the shoe material structure according to claim 1, wherein the hot pressing time of the hot pressing transfer is between 5 seconds and 100 seconds. The dyeing method of the shoe material structure as described in claim 1 is hot pressing by rolling. The dyeing method of the shoe material structure according to claim 1, wherein the main body has a top surface and a bottom surface opposite to each other, and a peripheral side surface located between the top surface and the bottom surface; wherein the transfer paper is attached to On at least one of the top surface, bottom surface or peripheral side of the main body. A shoe material structure dyed by the dyeing method described in claim 1, comprising: a main body, which is transparent and has thermoplasticity; and a dye, a part of which is dispersed between structural molecules of the main body, and at least a part penetrates into the main body The structural molecules of the main body are colored, wherein the heat-pressing temperature is 60°C to less than 130°C, and the heat-pressing pressure of the heat-press transfer is 1.5kg/cm ² to less than 4kg/ cm ² . The shoe material structure according to claim 5, wherein the structural molecule of the dye is smaller than the structural molecule of the main body. A shoe material structure includes a main body, a pattern containing dye on a transfer paper is penetrated into the main body by a hot press transfer method, the main body is colored in a transparent manner during production, and the volume of the structural molecules of the dye is smaller than The gaps between the main structure molecules, and part of the structural molecules of the dye are scattered between the structural molecules of the main body, and at least a part of it penetrates into the partial structural molecules of the main body, so that the structural molecules of the main body are colored, wherein the material of the main body is selected from Thermoplastic polyurethane, wherein the hot pressing temperature is 60° C. to less than 130° C., and the hot pressing pressure of the hot press transfer is 1.5 kg/cm ² to less than 4 kg/cm ² .

Images