TWI761791B - Manufacturing method of foam pad with printed layer on surface - Google Patents

Abstract

A method for making a foam pad with a printed layer on the surface, comprising: stacking a plurality of foamed sheets up and down in a foaming mold; A printing layer is printed with ink; the mold is heated to make each foamed sheet foam at the same ratio, wherein the foaming ratio is 2 to 3.5 times. According to the present invention, the printed ink does not fall off, the surface is beautiful and the fouling is not easy.

Description

Manufacturing method of foam pad with printed layer on surface

The present invention relates to a foam pad, in particular to a method for manufacturing a foam pad with a printed layer on the surface.

Pads made from recycled rubber materials are widely used in daily life, so patterns or patterns are often printed on their surfaces to add decoration. The color of the recycled material is usually only black, and the cost of adding pigments to change the color is extremely high. However, there is an oil film on the surface of the recycled material, which makes it difficult for the printed color to adhere, and it is easy to fall off during actual use in the future. In addition, the pad body made from recycled materials is cumbersome and has poor elasticity, and the surface has many pores, which are easy to absorb dust or dirt, which may endanger the hygiene.

In view of this, how to improve the above problem is the primary problem to be solved by the present invention.

The main purpose of the present invention is to provide a method for making a foam pad with a printed layer on the surface, the printed ink does not fall off, and the surface is beautiful and not easy to accumulate dirt.

In order to achieve the aforementioned purpose, the present invention provides a method for making a foam pad with a printed layer on the surface, comprising: stacking a plurality of foamed sheets up and down in the foaming mold; Printing a printing layer with ink on the top surface of the uppermost foamed sheet or the bottom surface of the lowermost foamed sheet or both; The mold is heated so that each foamed sheet is foamed at the same magnification, wherein the expansion magnification is 2 to 3.5 times.

Preferably, the foamed sheet is rubber or a rubber-based mixture.

Preferably, the printed layer has a single color or has a pattern.

Preferably, the foamed sheet has a color similar to that of the printed layer.

The above-mentioned objects and advantages of the present invention can be easily understood from the detailed description and accompanying drawings of the following selected embodiments.

Please refer to FIG. 1, which shows the manufacturing method of the foam pad with a printed layer on the surface provided by the present invention, which includes: stacking a plurality of foamed sheets up and down in the foaming mold; Printing a printing layer with ink on the top surface of the uppermost foamed sheet or the bottom surface of the lowermost foamed sheet or both; The mold is heated so that each foamed sheet is foamed at the same magnification, wherein the expansion magnification is 2 to 3.5 times.

In this embodiment, the foamed sheet is made of rubber or a mixed material mainly composed of rubber, so that the finished foam pad is light in weight and easy to handle. The foam sheet can be made of new material or recycled material. The new material has a lighter color, while the recycled material has a darker color. When printing, an ink with a similar color should be selected according to the color of the foam sheet, so that the color of the printed layer does not match. Too much influence or interference from the color of the foam sheet. In addition, the printed layer can be patterned.

As shown in Figures 2 and 3, the printing position of the above-mentioned printing layer 13 can be printed on the top surface of the uppermost foamed sheet 11 or the bottom of the lowermost foamed sheet 12, or the uppermost foamed sheet 11 according to the design requirements. The top surface and the bottom surface of the bottommost foamed sheet 12. According to the selected printing position, the top surface or bottom surface, or the top surface and bottom surface of the finished foam pad can present the color or pattern of the printed layer 13 as shown in FIG. 4 .

Since the above-mentioned ink has been printed on the foamed sheet before foaming, and the volume expansion after foaming will change the appearance of the printed layer, the ideal foaming ratio is between 2 and 3.5 times, which can be controlled The appearance of the printed layer should not be changed excessively in order to maintain the aesthetics of the design.

Except for the uppermost foamed sheet or the lowermost foamed sheet on which the printing layer is printed, the number of the remaining foamed sheets depends on the design thickness of the foam pad. Through the present invention, each layer of foamed sheets is foamed at the same rate, and the number of stacked foamed sheets in the mold determines the thickness of the finished foam pad.

By the above method, the present invention prints the ink on the foamed plate before foaming, so that the printing layer can be firmly attached to the surface of the cushion body after foaming, and will not fall off and maintain the beauty of the surface. In addition, the printing layer fills the pores on the surface of the foam pad at the same time, so that the surface is flat, dust or dirt will not be stuck inside the foam pad, and the sanitary conditions during use can be maintained.

However, the disclosure of the above embodiments is only used to illustrate the present invention, not to limit the present invention, and the replacement of equivalent elements should still belong to the scope of the present invention.

To sum up, those skilled in the art can understand that the present invention can achieve the above-mentioned purpose, and it complies with the provisions of the Patent Law.

11, 12: Foamed sheet 13: Printing layer

Figure 1 is a flow chart of the present invention; Figures 2 and 3 are schematic diagrams of the foamed sheet before and after foaming by the method of the present invention; Figure 4 is a photo of the actual product of the foam pad made by the method of the present invention.

Claims (6)

A method for making a foam pad with a printed layer on the surface, comprising: stacking a plurality of foamed sheets up and down in the foaming mold; Printing a printing layer with ink on the top surface of the uppermost foamed sheet or the bottom surface of the lowermost foamed sheet or both; The mold is heated so that each foamed sheet is foamed at the same magnification, wherein the expansion magnification is 2 to 3.5 times. The method for producing a foamed pad with a printed layer on the surface of claim 1, wherein the foamed sheet is rubber. The method for manufacturing a foamed pad with a printed layer on the surface as claimed in claim 1, wherein the foamed sheet is a mixture of rubber-based materials. The method for manufacturing a foam pad with a printed layer on the surface as claimed in claim 1, wherein the printed layer has a single color. The method for producing a foamed pad with a printed layer on the surface of claim 1, wherein the printed layer has a pattern. The method for manufacturing a foamed pad with a printed layer on the surface of claim 1, wherein the foamed sheet has a color similar to the printed layer.

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