JPS5814296B2 - Method of adding patterns to fabric using flocked protrusions - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention creates patterns by creating flocked protrusions of thermoplastic synthetic resin on the surface of fabrics used for surface materials such as miscellaneous goods, furniture, interior materials for buildings, etc. by a simple operation. It is related to the method of attaching.

Conventionally, it is known to create patterns on non-woven fabrics, paper, etc. by flocking them with adhesive, but it is also possible to create patterns by creating a large number of independent flock-like protrusions of synthetic resin on the pressurized part of the fabric. There is no known way to do that.

Conventionally, as shown in Japanese Patent Publication No. 36-7639, a method has been known in which synthetic resin softened in the patterned recesses of a molded roll is extruded through the weave. As can be seen from the drawings in the above-mentioned publication, the resin formed granular protrusions that stuck together, and did not form independent, flexible trichomes.

Furthermore, as shown in Japanese Patent Publication No. 34-2699, a method has been proposed in which a concavo-convex die is used to extrude synthetic resin trichomes from one side of a woven fabric to the other.

However, in all of these methods, the synthetic resin is extruded from the weave of the woven fabric in the non-pressurized area, so the pressure for extruding the resin is weak.

Therefore, it is necessary to increase the fluidity of the synthetic resin by processing it at a high temperature (180 to 220 degrees Celsius for PVC), so the generated protrusions fuse together and become block-like, which lacks flexibility and is not desirable. It was not possible to obtain trichomes with a tactile sensation.

The present invention was proposed to solve the above-mentioned conventional drawbacks, and uses a base plate in which a base material, a sheet of thermoplastic synthetic resin, and a fabric are stacked, two or more layers of wire mesh are stacked, and a convex portion is provided. By applying pressure to a portion of the fabric, it is possible to generate flock-like protrusions only in the pressurized area, and thereby, a large number of flock-like protrusions that are independent from each other and have a good texture can be generated. The purpose of this invention is to provide a method for adding patterns to images.

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory diagram showing one example of the arrangement of materials and equipment members used in the method of the present invention, in which 1 is a thermoplastic synthetic resin sheet, 2 3 is a woven fabric, 3 is a craft paper, 4 is a dense wire mesh, 5 is a coarse wire mesh, 6 is a base plate having convex portions 7 in a desired pattern, 6
' is a pressure plate.

Now, the present invention is based on the patent application filed in 1983-51, which was previously filed by the present applicant.
According to an improvement of the method of No. 248 (see Japanese Patent Application Laid-Open No. 143482/1982), by applying partial pressure only to the part where the flock-like protrusions are to be generated in a pattern, a large number of independent flocks can be produced in that part. It is intended to produce protrusions, and consists of 3 sheets of kraft paper as a base material and 1 sheet of thermoplastic synthetic resin.
and the woven fabric 2, on top of which two or more layers of wire mesh with different mesh densities are stacked in descending order of mesh densities 4 and 5, and while heating these appropriately, convex portions 7 are formed from both sides in a desired pattern.
Partial pressure is applied to the convex portion 7 using a base plate 6 provided with a pressure plate 6 and a press plate 6'.

In this case, the base plate 6 and the pressing plate 6' may be interchanged vertically, but
When the base plate 6 is placed in the state shown in FIG. 1, a pattern of flocked protrusions with a sharper outline can be generated than when the base plate 6 is placed on the wire mesh side.

Alternatively, the base plate 6 may be placed on both sides and pressurized.

In this case, the parts where the protrusions of both base plates face each other are no different from the flocked protrusions that occur in Figure 1, and if the protrusions do not face the protrusions of the other base plate, the pressure is weak, Although the condition in which the flocked protrusions are generated is insufficient in terms of length and density, this also has the effect of presenting a special pattern.

Further, the woven fabric may be a knitted fabric such as knitted fabric, and in short, any fabric may be used as long as it has a weave, stitch, etc. from which flocked protrusions are extruded.

On the other hand, the heating temperature and pressure depend on the thermoplastic synthetic resin, the type of fabric,
It varies depending on the length, density, etc. of the desired flocked projections.
When using polyvinyl chloride sheet, which is the most typical example, and a 100 mesh plain weave fabric, the temperature is around 140℃,
Appropriately, it is about 100 kg/cm2.

In this way, the thermoplastic synthetic resin sheet 1, the woven fabric 2, and the paper 3 are heated and pressed, and only the portion of the woven fabric 2 that is pressed by the convex portion 7 of the base plate 6 shown in FIG. 2 is pushed into the sheet 1. , wire mesh 4,
The synthetic resin of the sheet passes through the meshes of the wire meshes 4 and 5 from the surface pressed by the wire meshes 5, forming flocked protrusions 8, and a desired pattern can be formed by the protrusions 8.

Although the pressing method using a flat plate has been described above, a pressing method using rolls 9 and 9' shown in FIG. 4 may also be used.

The conditions for the generation of flocked protrusions in the present invention are to press the fabric against the resin layer and apply enough pressure to extrude the resin from the weave of the fabric, and to press the fabric to the resin layer, which becomes the flocked protrusions. However, there is a space that extends without being fused to each other.

The convex portion 7 in FIG. 4 is a portion that can apply a desired pressure to the cloth through the wire mesh, and the space for expansion is secured by the distance between the lines of the wire mesh and the thickness of the wire mesh.

Furthermore, although it cannot be said that the fabric is pushed into the 10α% resin layer in the pushed-in portion, in the area where the flocked protrusions 8 in Fig. 7 are formed, most of the thickness of the fabric is made of resin. It's pushed inside.

Now, the function of the wire meshes 4 and 5 is to transmit pressure and provide space, as described above.

However, although the space that can be provided cannot be said to be large, it is sufficient for the flocked projections 8 to extend.

This is because, as shown in FIG. 7, the protrusions are not straight hairs but are moderately curled, so they can freely extend until they fill the space provided by the wire mesh.

For example, in Example 1 described below, the thickness of the wire mesh is 1.2
When expressed as mm, the maximum length of the flocked projection is about 8 mm.

Note that the shortest distance is Omm (same height as the surface of the fabric or resin), and this is because the distribution of the indentation pressure on the fabric is uneven in minute parts.

Next, regarding the shape of the convex portion 7, the average length of the flocked protrusions made of thermoplastic synthetic resin varies depending on the height and cross-sectional shape of the convex portion.

That is, as shown in FIG. 5A, when the height of the protrusion 7 is greater than the thickness of the resin sheet, the flocked protrusions 8 are generated only in the area where the protrusion 7 is located, but the height of the protrusion 7 is When the thickness is between zero and the thickness of the resin sheet, the pressing force is partially reduced as shown in Fig. A variety of flocked projections 8 having directly proportional lengths can be freely obtained.

This point is a major feature of the present invention, and it is impossible to freely obtain flocked projections with varying lengths using conventional methods for generating trichome projections in non-pressurized areas.

Here, when the roll 9 (FIG. 4) or the base plate having a convex portion is arranged on the wire mesh 4, 5 side, the force pushing the woven fabric into the resin sheet 1 is due to the rigidity of the wire mesh 4, 5. Since the particles are dispersed at the corners of the convex portions 7, an elegant pattern with unclear outlines appears as shown in FIG.

In addition, in FIGS. 5 and 6, in order to clarify the average length of the flocked protrusions 8, they are shown in a simplified linear form, but
An enlarged view of the flocked projection 8 is shown in FIG. 7.

In this case, the resin sheet 1 and the woven fabric 2 are separated 10 from each other because the portion 9 where the flocked protrusions 8 are not formed is not pressurized by the convex portion 7 .

Hereinafter, the present invention will be further explained in detail with reference to the following specific examples.

Example 1 10 mm thick metal press plate, 14 mesh wire mesh, 2
0 mesh wire mesh, blue colored 100 mesh fabric, white thickness 0. A 6 mm polyvinyl chloride sheet, 40 g/m2 kraft paper, and a metal base plate with convex portions 1 inch high in a pattern were stacked in this order, and the top and bottom were heated to 150°C in parallel. Pressure was applied for 30 seconds under a pressure of 150 kg/cm2 using a press machine having a flat surface.

As a result, the woven fabric is pushed into the resin only in the parts corresponding to the convex parts of the base plate, and at the same time, flocked projections are generated on one side of the woven fabric from the weave of the woven fabric, and these white flocked projections A decorative surface material was obtained in which a pattern appeared on the blue woven fabric in accordance with the arrangement of the convex portions of the base plate.

Example 2 In place of the metal base plate used in Example 1, 0.05 mm was applied for 1 hour at 10 interval intervals. When pressure processing was performed in the same manner as in Example 1 using a metal base plate with parallel grooves of 4 mm and 0.2 mm deep, areas where flocked projections did not occur at 10 mm intervals, 2 mm, 0. 7 mw, 2 mm, 1
．． A decorative surface layer material having a striped pattern consisting of areas in which flocked projections having an average length of 4 mm were formed was obtained.

Example 3 When the metal pressing plate and the base plate were turned upside down and pressure processing was performed under the same conditions as in Example 1, the average value gradually decreased from the corner of the convex part of the base plate outward. A decorative surface material having a pattern of flocked projections with reduced length was obtained.

As explained in detail above, according to the present invention, a wire mesh is provided on the fabric surface side of the pressurized portion by the convex portion of the base plate, so that a large number of curved thermoplastic synthetic resins are arranged independently from each other. can produce hair-like protrusions.

Moreover, in the present invention, the synthetic resin is extruded in the form of flocked projections only from the eyes of the fabric in the pressurized area, so the extrusion pressure is large, and in contrast to the conventional method where trichomes are generated in the non-pressurized area. The heating temperature of the resin can be lower than that in the conventional method, and this can prevent the flocked protrusions from fusing together and forming blocks.

Therefore, the flock-like protrusions produced in the pattern by the method of the present invention are individually independent, have flexibility, are generated in large numbers, and have a pleasant feel.

Furthermore, if the height of the convex portion of the base plate of the present invention is between zero and the thickness of the resin sheet, the pressing force will not be uniform, so that the flocked protrusions will be formed on the convex portion. It is easy to obtain a length that is directly proportional to the height.

Therefore, it is possible to freely obtain a decorative material having a patterned portion having flocked protrusions with a wide variety of lengths.

In addition, in the present invention, if the base plate provided with convex portions is placed on the opposite side of the wire mesh, the pattern created by the flocked protrusions can be clearly displayed. It is possible to create a pattern with unclear outlines at the corners, and to obtain a special decorative material rich in elegance.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing an example of the arrangement of materials and device members used in the method of the present invention, FIG. 2 is a perspective view showing the convex portion of the base plate, and FIG. Fig. 4 is a side sectional view showing the state in which the method of the present invention is carried out using a roll having convex portions; Fig. 5 A, opening, and C are various shapes and heights Fig. 6 is an explanatory diagram showing the state of flocked protrusions produced when processing with a base plate provided with convex portions, and Fig. 6 is an explanatory diagram showing the state of flocked protrusions when processed with the base plate placed on the wire mesh side. 7 are enlarged side sectional views showing the flocked projections. Explanation of the main parts of the figure, 1...Thermoplastic synthetic resin sheet,
2... Woven fabric (fabric), 3... Kraft paper (base material), 4...
...Dense wire mesh, 5... Coarse wire mesh, 6... Base plate, 7... Convex portion, 8... Flocked projection.

Claims (1)

[Claims] 1 Layer the base material, thermoplastic synthetic resin sheet and fabric,
Two or more layers of wire mesh with different mesh densities are layered on top of it in order of increasing mesh density, and while heating these layers, using a base plate with projections in a desired pattern, the projections are applied from one or both sides of the base plate. By partially applying pressure, the fabric in the pressurized part is pushed into a sheet of thermoplastic synthetic resin, and a large number of flocked protrusions made of thermoplastic synthetic resin are formed on the surface of the fabric on the wire mesh side in the pushed part. A method of adding patterns to fabric using flocked protrusions.