JPS6030270B2 - Manufacturing method for sponge lace pattern with rich three-dimensional effect - Google Patents

Description

[Detailed Description of the Invention] The present invention provides a sponge lace pattern with a rich three-dimensional effect, more specifically, the sponge lace pattern partially has a three-dimensional pattern that is larger than its foaming ratio, and has a rich three-dimensional effect. , and relates to a method for producing a sponge lace patterned fabric with excellent elasticity and touch, and rich in three-dimensional effect.

Conventionally, sponge lace pattern fabrics made of thermoplastic synthetic resin with three-dimensional patterns have been produced by filling the concave parts of an indented mold with thermoplastic synthetic resin containing a foaming agent and heating to decompose the foaming agent. However, since it was manufactured by foaming a synthetic resin, it was not possible to create a three-dimensional pattern that exceeded the foaming ratio, and it also had the disadvantage of not having sufficient elasticity and feel.

In addition, the mold-foamed product can only form protrusions corresponding to the mold pattern, and when the mold-preformed product is foamed outside the mold, the foaming ratio is larger than that of the mold-foamed product. However, since it is preformed within the mold, the protrusion is still limited by the mold pattern. The present invention was invented to eliminate these drawbacks. Therefore, the purpose of the present invention is to foam a lace-patterned fabric made of thermoplastic synthetic resin that is intaglio molded at a temperature below the decomposition temperature of the blowing agent. Sponge lace that partially prevents the pattern from expanding in the lateral direction, creating a three-dimensional pattern that protrudes upward, and that has a three-dimensional effect that is higher than the foaming ratio, and has good elasticity and feel. The object of the present invention is to provide a simple method for producing a patterned fabric, and to achieve this objective, the present invention is to provide a lace patterned fabric made of thermoplastic synthetic resin that has been intaglio molded at a temperature below the decomposition temperature of a blowing agent. The lace pattern is placed along a freely rotatable rotating cylinder with unevenness and in contact with the convex part, and heated to a temperature higher than the decomposition temperature of the foaming agent to weld the lace pattern to the convex part, and the welding force is increased. The gist is that the welding force is greater than the decomposition and expansion force of the foaming agent, and the lace pattern fabric is foamed.

Next, the manufacturing method of the present invention will be explained in detail based on the drawings. 1
2 is a rotary cylinder with a rough surface, in other words, it has an uneven surface and is free to rotate; 2 is a lace pattern fabric made by intaglio molding a thermoplastic paste sol containing a foaming agent at a temperature below the decomposition temperature of the foaming agent; The sheath patterned area 2 is placed along the rotating cylinder with its smooth surface facing the rotating cylinder 1, and is in contact with the convex portion 3 of the cylinder 1, and the contact surface is, as will become clear later, When the lace pattern fabric 2 and the convex portion 3 are welded together, the bonding area is such that the welding force is greater than the decomposition and expansion force of the foaming agent.

After doing the above, the lace pattern 2 is heated to a temperature higher than the decomposition temperature of the foaming agent contained in the lace pattern 2 to melt the rotating cylinder side of the lace pattern 2, and the lace pattern 2 At the same time, the foaming agent is decomposed and the lace pattern fabric 2 is foamed to a uniform thickness P proportional to the unfoamed thickness.

By the way, during this foaming, a welding force acts on the lace patterned area 2 at the part where the lace patterned area 2 is welded to the convex portion 3, so the lace patterned area 2 only has a constant foam thickness P. In other words, between the welding points and the welding points, the force is difficult to act on the part where the lace pattern 2 faces the concave part of the rotating cylinder 1 and is away from the rotating cylinder 1, so this part is the same as above. As the wall thickness P becomes larger, the additional force due to the expansion force of the foam, in other words, the special effect, creates a raised three-dimensional pattern 4 in the welded portion as shown in the figure, which is larger than the wall thickness P. , a cavity a is formed between the rotating cylinder and the three-dimensional pattern 4.

That is, the resistance of the welded portion prevents the lace pattern 2 from expanding in the horizontal direction, and as a result, a longitudinal shark is formed in the lace pattern 2, and the shark becomes the three-dimensional pattern 4.

That is, according to the manufacturing method of the present invention, a sponge lace patterned fabric is obtained in which the lace patterned fabric 2 is foamed and has a three-dimensional pattern 4 that is partially raised in areas other than the welded areas.

Also, the back side of the three-dimensional pattern 4 has a cavity a, so it is elastic.
Moreover, it feels good.

Moreover, a product having a three-dimensional pattern 4 that is not restricted by the pattern of the mold recesses can be obtained. Next, an example will be explained.

Example 1 Vinyl chloride resin 10 parts (same parts by weight and below) plasticizer
45 parts Stabilizer 3
Part 〃 Foaming agent 3 parts 〃 A paste resin consisting of 〃 is filled into the concave portion (intaglio) of the mold and heated at 160°C for 3 minutes to form a semi-gelled lace pattern 2, and the lace pattern 2 is smoothed. The surface (back surface) was brought into contact with and along the convex portion 3 of the rotating cylinder 1, and the
to fuse the two at the contact portion by heating for 2 minutes,
The foaming agent was decomposed to obtain a sponge lace pattern having a three-dimensional pattern 4 larger than the foam wall thickness between both contact areas.

[Brief explanation of drawings]

The drawing is a partially cutaway explanatory view showing one embodiment of the manufacturing method of the present invention. 1... Rotating cylinder, 2... Lace pattern, 3... Convex portion, 4... Three-dimensional pattern.

Claims (1)

[Claims] 1. A lace pattern made of thermoplastic synthetic resin that has been intaglio-molded at a temperature below the decomposition temperature of the foaming agent is brought into contact with the convex portions by placing it along a rotary cylinder that is freely rotatable and has an uneven surface that has been heated. The lace pattern is heated to a temperature higher than the decomposition temperature of the agent to weld the lace pattern to the convex portion, and the welding force is made higher than the decomposition and expansion force of the foaming agent, and the lace pattern is foamed. A method for producing a sponge lace patterned fabric with a rich three-dimensional effect.