JPH0744976B2 - Method of manufacturing trim cover - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a trim cover that allows a skin material, a wading material, and a backing material to be continuously and integrally joined.

2. Description of the Related Art Conventionally, in order to integrally join a skin material, a wading material, and a backing material, sewn by a quilt machine, welding by a high frequency welder or ultrasonic welder has been applied.

Among the problems to be solved by the invention, sewing with a quilt machine has a productivity of only about 3 m / min, and therefore the productivity is the worst due to thread replacement etc. even if continuous work is possible. Also, since there is a problem of sparks in the high-frequency welder, it can be applied only when manufacturing a thin product from a place where the output must be lowered when continuously welding and joining, and it can be applied to a normal seat trim cover etc. Since thick material processing requires cooling time, a batch press welder must be applied. Further, since the ultrasonic welder cannot take a cooling time, it is difficult to maintain the wading pattern due to the repulsion of the wadding material when only the wading material is interposed between the skin material and the backing material.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method of manufacturing a trim cover that can improve productivity by solving the problems caused by the ultrasonic welder and enabling continuous work.

In the method for manufacturing a trim cover according to the present invention, a linear groove corresponding to a wading pattern is provided on the surface of a wadding material, and thermoplastic resin is provided along the inner surface of the groove. Place a skin material lined with a cotton cloth on the surface of the wadding material, and use ultrasonic welder to continuously integrate the areas corresponding to the grooves of the skin material lined with the cotton cloth and the wading material with the backing material attached. It is designed to be welded and joined.

Operation In this method of manufacturing the trim cover, a cotton cloth that is easy to shape and has a bent shape is laminated on the back surface of the skin material, and in addition, the surface of the wadding material is linearly recessed corresponding to the wading pattern. A groove is provided, and the skin material is placed on the surface of the wadding material along the inner surface of the groove, and the weld groove is continuously welded to the area corresponding to the groove. Since the part does not float or lose its shape, and the fact that the cotton cloth is compounded with the wadding material makes it possible to efficiently manufacture the trim cover which has no problem in durability even if the cotton cloth easily sets.

Embodiments The following will be described with reference to the accompanying drawings.

The illustrated embodiment is to manufacture a trim cover for a sheet in which a skin material, a wading material, and a backing material are integrally joined together to form a wading pattern with a linear concave portion on the surface. Welding by ultrasonic welder is applied.

Prior to this welding and joining, the skin material 1 is previously lined with a cotton cloth 2 having thermoplasticity as shown in FIG. As the cotton cloth 2, a synthetic cotton cloth having thermoplasticity such as polyester or a cotton cloth in which thermoplastic fibers are mixed with hemp, cotton, wool or the like can be used, and this may be laminated on the back surface of the skin material 1. The cotton cloth 2 may optionally be laminated with a backing material 3 as shown in FIG. 1b and then placed on a wadding material 4 shown in FIG. 1c. A urethane slab can be used as the wadding material 4, and a backing material 5 is laminated on the back surface of the slab, and a groove 6 corresponding to the wading pattern is formed on the front surface of the slab along a feeding direction in a bonding step described later. Provide a number. As shown in FIG. 1d, the wadding material 4 includes a cotton cloth 2 together with a skin material 1.
Are indented along the inner surface of the groove 6, so that the surface material 1 lined with the cotton cloth 2 is placed on the surface. The skin material 1
In addition, since the cotton cloth 2 can be easily bent according to the shape of the recessed groove 6 and the bent shape can be maintained for some time, it is possible to prevent the cotton cloth 2 from floating in a direction away from the recessed groove 6.

This indentation molding can be performed by pressing the skin material 1 with a roll while the skin material 1 lined with the cotton cloth 2 and the wadding material 4 having the concave groove 6 are conveyed in opposition. Subsequently, the skin material 1, the wadding material 4, and the backing material 5 can be integrally joined by being sent to the joining process by the ultrasonic welder shown in FIG. This ultrasonic welding process is performed by the uneven roller 10 that presses the groove-corresponding part from below.
The laminated material of the skin material 1, the wadding material 4, and the backing material 5 is passed between the horn and the oscillating horn 11 which applies the vibration action to integrally join the three members, and between the skin material 1, the wading material 4 When ultrasonic waves are applied to the backing material 5, each constituent material is heated to be plasticized, and the cotton cloth 2 is heat-welded as a main binder. This heat-welded state can be maintained even after passing through the roller 10 and the oscillation horn 11 because the cotton cloth 2 has a good shape retention property and the concave groove 6 is formed in the wadding material 4. Skin material between 1 and 1 in succession
Even when the wadding material 4 and the punching material 5 are welded and joined, the wading pattern corresponding to the groove 6 can be maintained without losing its shape as shown in FIG. The manufacturing process reaches 9 to 13 m / min, and the manufacturing efficiency can be extremely improved.

Although the trim cover thus obtained has a cotton cloth 2 which is easily worn out for many years, it has no problem in use durability because it can be combined with the wadding material 4 to complement fashionability. Since 2 has excellent breathability and heat absorption, it becomes possible to construct a seat with a good seating feeling.

EFFECTS OF THE INVENTION As described above, according to the trim cover manufacturing method of the present invention, not only the production efficiency can be improved and a desired wading pattern can be formed, but also a seat having a good seating feeling can be obtained. Can be formed.

[Brief description of drawings]

1A to 1D and 2 are explanatory views showing the manufacturing process of the trim cover according to the present invention, and FIG. 3 is a sectional view of the trim cover manufactured by the same method. 1: skin material, 2: cotton cloth, 4: wadding material, 6: groove, 10, 11: ultrasonic welder.

Claims (1)

[Claims] 1. A linear groove corresponding to a wading pattern is provided on the surface of a wadding material, and a skin material lined with a thermoplastic cotton cloth along the inner surface of the groove is provided on the surface of the wadding material. The surface of the trim cover, which is lined with the cotton cloth and the wading material with the backing material adhered, is designed to be welded and joined continuously and integrally by using an ultrasonic welder. Production method.