KR101805356B1 - Manufacturing Method of Volume Seat Cover Member - Google Patents

Abstract

The present invention relates to a volume seat cover member which enables productions costs to be lowered by simplifying a production process, thereby improving production speed and productivity, facilitates a sewing operation while minimizing a sewing process, and particularly can prevent deformation of leather of a fabric due to heat pressing; a manufacturing method of the volume seat cover member; and a heat press for manufacturing the volume seat cover member. The manufacturing method according to an aspect of the present invention comprises: a step (a) of attaching an elastic foam with a predetermined thickness to one side of the fabric; and a step (b) of injecting an output of the step (a) between an upper plate and a lower plate of the heat press to heat press the output using a flat plate as the upper plate of the heat press and using a plate on one side of which one or more concave portions corresponding to a volume (block) shape of a volume sheet to be manufactured are formed as the lower plate of the heat press.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a volume seat cover member,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a volume seat cover member, and more particularly, to a volume seat cover member using a thermo-compression molding to provide interior parts such as a car seat, a door trim, a car interior, a cosmetic puff, (Hereinafter collectively referred to as a volume seat cover member) used in an emulsion-impregnated foam, a cosmetic carrier foil, an industrial chair, a sofa, etc., a volume seat cover member manufactured by the method, To a hot press for manufacturing.

In recent years, in order to increase the comfort of the automobile seat and the comfort of the seat, a volume seat having a volume and a curvature on the surface thereof is used more frequently than a flat-shaped seat. In the case of such a volume sheet, the manufacturing method is different from the conventional flat sheet, and since there is a lot of bending in particular, there is a high possibility that wrinkles will occur during long-term use.

Accordingly, the present applicant has proposed a volume seat cover (hereinafter referred to as " seat cover ") which gives a sense of volume to the front portion of a seat cushion and a seat back of a car through a prior patent (Korean Patent Registration No. 10-1340291) Which is excellent in stretchability and elasticity so that even when used for a long period of time, there is no leather lifting phenomenon and the wrinkle recovering property is excellent, so that wrinkles do not occur on the surface of the leather at the time of occupancy, A volume seat cover and a manufacturing method thereof have been proposed. In this technique, a volume is formed between a top plate having a filter foam on the bottom of the leather, a bottom plate having a foam pad layer on top of the backing cloth, and a volume between the top plate and the bottom plate. The web film is provided on the top and bottom, And an intermediate foil is formed by bonding the upper plate, the lower plate and the intermediate foam by heating the web film by thermal pressing. In order to manufacture such a volume seat cover, an intermediate foam is formed between the upper plate and the lower plate, The present invention relates to a method of manufacturing an automotive volume seat cover, which is followed by a step of disposing an intermediate foam by using an integral jig or a separable jig and joining an upper plate, a lower plate and an intermediate foam by heat pressing, Technology.

However, in the above-mentioned prior arts, in joining the intermediate foam to the upper plate and the lower plate, a plurality of intermediate foams must be individually disposed in the groove of the jig by using the integral jig or detachable jig and the jig is separated again after the heat pressing is completed The production speed is slow and the productivity is not high. In addition, there is a possibility of occurrence of defects because the process of jig loading and jig separation must be performed manually. In the sewing process for manufacturing the volume sheet, the thickness of the intermediate foam may not be easily sewable due to the thickness of the intermediate foam, And the need to improve the fabric has been raised.

Korean Patent No. 10-1340291

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to simplify a production process to improve production speed and productivity, thereby lowering production cost, And to provide a method of manufacturing the volume seat cover member and a thermal press for manufacturing the volume seat cover member.

According to an aspect of the present invention, there is provided a method of manufacturing a volume seat cover member, the method comprising: (a) attaching an elastic foam having a predetermined thickness to one surface of a raw fabric; And (b) placing the resultant of the step (a) between the upper plate and the lower plate of the hot press and thermo-compressing the same, wherein the upper plate of the hot press uses a flat plate, (B) a step of sewing the pressed portion of the edge of the volume sheet cover produced as a result of the step (b), wherein the step (b) comprises the step of thermocompression bonding using a plate having one or more concave portions corresponding to the volume In the step (b), the other surface (unattached surface) of the fabric may be positioned to correspond to one surface of the lower plate.

For example, in the step (b), the upper plate is heated to a first temperature, the lower plate is preheated to a second temperature which is relatively higher than or equal to the first temperature, The first temperature may be 190 to 200 ° C, the second temperature may be 190 to 210 ° C, the thermocompression pressure may be 500 to 1000 kg, and the thermocompression bonding time may be 100 to 210 sec. .

As another example, in the step (b), the upper plate may be heated to a first temperature and the lower plate may be thermocompressed in an unheated state, wherein the first temperature is 190 to 200 ° C, The pressing pressure is 500 kg, and the thermocompression bonding time can be 40 sec.

The plate having one or more concave portions formed on one surface thereof may be a jig plate integrally formed with or separable from the lower plate.

In the step (b), a plurality of stitch grooves corresponding to stitch shapes may be formed between the concave portion and the concave portion on one surface of the lower plate, and thermocompression may be performed.

In the step (a), at least one of a flame lamination method, a full bonding method, a hot melt method, a dry bonding method, and an indirect thermal bonding method using an IR heater may be used. The elastic foam may be a sponge foam , A filter foam, and a PET elastic pledge, and the fabric may be natural leather, artificial leather, vented perforated leather, or fabric.

According to another aspect of the present invention, there is provided a volume seat cover member obtained by putting a fabric having an elastic foam having a predetermined thickness on one surface thereof into a heat press and thermally pressing the same, And the lower plate of the hot press is formed of a plate having at least one concave portion corresponding to the convex shape of the volume sheet to be manufactured, the plate being formed on one surface thereof, and the other surface of the fabric to which the elastic foam is attached (The fabric having the elastic foam attached thereto) is placed in a hot press so as to face the one surface of the lower plate and thermocompression-bonded to the other surface of the fabric with the elastic foam to correspond to the volume portion corresponding to the recess and the non- May be an alternately formed volume sheet cover member.

Wherein a plurality of stitch projections corresponding to the plurality of stitch grooves are formed in the pressing portion by thermocompression using a plurality of stitch grooves corresponding to stiches formed between a concave portion and a concave portion on one surface of the lower plate, And the elastic foam may include at least one of a sponge foam, a filter foam, and a PET elastic cloth, and the fabric may be made of natural leather, synthetic leather, Leather, leather with vent holes, or fabric.

According to another aspect of the present invention, there is provided a thermal press for manufacturing a volume sheet cover member, which comprises a volume sheet cover, a cosmetic carrier foam, , And a cosmetic puff (PUFF) foam, wherein the upper plate of the hot press uses a flat plate, and the lower plate of the hot press is a volume of the object to be manufactured (convex, embossed ) Shape is formed on one surface of the substrate.

A plurality of stitch grooves corresponding to a stich may be formed between the concave portion and the concave portion on one surface of the lower plate. The plate having one or more concave portions formed on one surface thereof may be integrally formed with or separated from the lower plate The upper plate may be heated to a first temperature and the lower plate may be preheated to a second temperature and then a control device for controlling the power to be turned off or unheated at the time of thermocompression .

As described above, according to various aspects of the present invention, a volume sheet cover member is produced by putting a fabric having an elastic foam foam on a heat press and thermally pressing the same, and in particular, The following effects can be created by using an engraving (press) technique having a recess in the lower plate.

First, the production process can be simplified compared to the existing one, so that the production speed and productivity can be improved, and the production cost can be greatly reduced.

Second, since the elastic foam and the fabric are adhered and thermocompressed, the sewing can be minimized or eliminated, the sewing is easy, and the peeling phenomenon between the elastic foam and the fabric can be prevented even if only the side portion is sewn. Therefore, the sewing operation time and the labor cost can be reduced.

Third, since the leather surface of the fabric is not directly heated, it is possible to prevent the deformation of the fabric leather due to the heat pressing.

Fourth, the shape of the volume can be varied according to the shape of the concave portion.

Fifth, according to the shape and pattern of the stitch groove, various stitch pattern patterns can be formed on the sewing area, and diamonds and dots can be designed.

According to the existing volume sheet molding method, when the natural or artificial leather is sewn in the secondary processing, the sewing surface is cured, which obstructs the basic physical properties of the foam, such as breathability and elasticity, or raises the sewing labor cost.

In the same manner as in the conventional method, natural and artificial leather and foam are laminated to cause the leather to contact with heat during volume molding, thereby causing problems such as hardening of the leather surface and moisture reduction. According to the embodiment of the present invention, It is possible to prevent surface hardening and moisture reduction of leather while maintaining the ventilation and elasticity of the foam without harming the basic physical properties of the leather and foam due to the heat is not conducted, and it is possible to shorten the time and shorten the time of sewing work, It has effect of sensibility of quality and cost reduction effect in sewing process.

1 is a schematic cross-sectional view of a hot press apparatus according to an embodiment of the present invention,
Fig. 2 is a plan view of the lower plate of Fig. 1,
FIGS. 3 to 6 are diagrams for explaining a volume seat cover member and a method for manufacturing the volume seat cover member according to an embodiment of the present invention;
7 is a view illustrating a volume seat cover member according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, like reference numerals are used to denote like elements in the drawings, even if they are shown in different drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

FIG. 1 is a schematic cross-sectional view of a hot press apparatus according to an embodiment of the present invention, and FIG. 2 is a plan view of a lower plate of FIG.

Referring to FIGS. 1-2, a thermal press apparatus (or a thermal press) 10 according to an embodiment of the present invention is for manufacturing a volume seat cover by inserting a fabric with an elastic foam attached thereto, May include a plate (11) and a lower plate (12).

The upper plate (11) of the hot press (10) is formed as a flat plate with at least a flat pressing surface.

The lower plate 12 of the thermal press 10 may have one or more concave portions corresponding to the volume (convex, embossed) shape of the object including the volume sheet cover, the cosmetic carrier foam, and the cosmetic puff form, (Press-contact surface) of the lower plate 12, and a specific plate having one or more concave portions formed on one surface thereof may be a jig plate integrally formed with or detachable from the lower plate 12. [

A plurality of stitch grooves 12c corresponding to stitch shapes may be formed between the concave portion 12a formed on one surface of the lower plate 12 of the thermal press 10 and the concave portion 12a .

The shape of the concave portion 12a and the stitch groove 12c can be formed in various shapes according to the volume (convex) shape and the stitch shape of the volume seat cover to be manufactured.

The thermal press 10 according to the present embodiment controls the upper plate 11 to be heated to the first temperature and the lower plate 12 is heated to the second temperature that is not heated or relatively higher than or equal to the first temperature And a control device (not shown) for controlling the power supply to be turned off upon pre-heating and thermocompression.

3 to 6 are process diagrams for explaining a volume seat cover member and a method of manufacturing the volume seat cover member according to an embodiment of the present invention.

3, a process of attaching an elastic foam 32 having a predetermined thickness to one surface (inner surface) of the raw fabric 31 is performed.

In the above-described process, at least one of a flame lamination method, a full bonding method, a hot melt method, a dry bonding method, and an indirect thermal bonding method using an IR heater can be used.

The fabric 31 may be one of natural leather, artificial leather, leather with vented holes, or fabric, and the elastic foam 32 may comprise at least one of a sponge foam, a filter foam, and a PET elastic shoe. In this embodiment, the use of natural leather is described as an example.

Next, as shown in Fig. 4, the natural leather 31, 30 with the elastic foam 32 attached between the upper plate 11 and the lower plate 12 of the hot press 10 of Fig. 1 is inserted (Leather surface) (unattached surface) of the natural leather 31 (30) is positioned so as to face the recessed portion 12a forming surface of the lower plate 12.

5, the upper plate 11 of the hot press 10 is heated to the first temperature, and the lower plate 12 is heated to a temperature higher than the first temperature The elastic foam 32 is adhered to the lower plate 12 by heat radiation from the upper plate 11 side to the lower plate 12 side, The leather surface of the natural leather 31 is sucked into the concave portion 12a of the lower plate 12 and the convex shaped volume 30a corresponding to the concave portion 12a is formed as shown in Fig. do. At this time, heat is not directly applied to the lower plate 12 of the hot press 10 due to heat pressing, and heat is not directly applied to the surface of the natural leather 31, so that deformation of the leather due to heat pressing can be prevented .

5, for example, the upper plate 11 of the hot press 10 is heated to the first temperature, and the lower plate 12 is heated to a temperature higher than or equal to the first temperature 2, and then thermocompression can be carried out while the power is turned off at the time of thermocompression. In this case, the first temperature may be 190 to 200 ° C, the second temperature may be 190 to 210 ° C, and the thermocompression pressure may be 500 to 1000 kg And the thermocompression time may be 100 to 210 seconds.

5, the upper plate 11 of the hot press 10 may be heated to the first temperature and the lower plate 12 may be thermally pressed in the unheated state, In this case, the first temperature is 190 to 200 ° C, the thermocompression pressure is 500 kg, and the thermocompression bonding time is 40 sec.

A plurality of stitch grooves 12c corresponding to stitch shapes are formed between the concave portion 12a of the lower plate 12 of the thermal press 10 and the concave portion 12a, Various stitch pattern shapes can be formed on the portion 30b to be sewn as shown in FIG. 7 depending on the shape and the pattern of the stitch groove 12c, and diamonds and dots can be designed Do.

In addition, since the elastic foam 32 and the fabric 31 are attached in the process of FIG. 3 and are thermocompression-bonded in the process of FIGS. 4 to 5, the sewing can be minimized or eliminated and sewing is easy. Peeling phenomenon between the elastic foam 32 and the raw fabric 31 can be prevented even if only a part such as a compressed portion is sewn.

In addition, the volume type and pattern can be varied according to the shape and the pattern of the concave portion 12a.

7 is a view illustrating a volume sheet cover member according to an embodiment of the present invention. In the volume sheet cover member manufacturing method described above with reference to FIGS. 3 to 6, .

The volume sheet cover member 70 shown in Fig. 7 is a volume sheet cover member 70 obtained by putting a natural leather raw fabric 31 having an elastic foam 32 having a predetermined thickness on one surface thereof into a hot press 10, The upper plate 11 of the thermal press 10 uses a flat plate and the lower plate 12 of the thermal press 10 has one corresponding to the volume (convex) shape 30a of the volume sheet to be manufactured The elastic foam 32 is attached to one surface of the lower plate 12 such that the other surface of the fabric 31 or 30 to which the elastic foam 32 is attached faces the other surface of the lower plate 12. [ The fabric 31 (30) having the elastic foam 32 attached thereto is put into the hot press 10 and thermocompression-bonded so that a volume corresponding to the concave portion 12a is formed on the other surface of the fabric 31 (30) And the pressed portion 30b corresponding to the portion 30a and the non-recessed portion 12b are alternately formed.

A plurality of stitch grooves 12c corresponding to stitch shapes are formed between the concave portion 12a and the concave portion 12a on one surface of the lower plate 11 of the thermal press 10, A plurality of stitch projections 30c corresponding to the plurality of stitch grooves 12c are formed in the pressing portion 30b. In addition, only the pressed portion 30b of the edge of the volume seat cover member 70 can be actually sewn.

Hereinafter, various embodiments of molding conditions of the present invention will be described.

[Example 1]

In Example 1, the natural leather 31 (30) to which the elastic foam 32 is attached is heat-pressed (pressed) at a molding temperature of 200 ° C for the upper plate 11, 210 ° C for the lower plate 12, Respectively. The forming temperature is a temperature set in a state in which the upper plate 11 and the lower plate 12 of the hot press 10 are in contact with each other and the temperature of the upper plate 11 and the lower plate 12 of the hot press 10, The temperature of the upper plate 11 and the lower plate 12 at the time of thermocompression bonding is 190 占 폚 and 200 占 폚, respectively, after the fabrics 31 and 30 with the elastic foam 32 attached therebetween are opened.

The volume sheet cover member manufactured according to Example 1 was formed in a volume shape, but the soft feeling of the natural leather 31 was reduced and sporadic peeling of the adhesive region occurred.

[Example 2]

In Example 2, the natural leather 31 (30) to which the elastic foam 32 is attached is thermo-compression bonded at a molding temperature of 200 ° C for the upper plate 11, 0 ° C for the lower plate 12, Respectively. The forming temperature is a temperature set in a state in which the upper plate 11 and the lower plate 12 of the hot press 10 are in contact with each other and the temperature of the upper plate 11 and the lower plate 12 of the hot press 10, The temperature of the upper plate 11 and the lower plate 12 at the time of thermocompression bonding is 190 占 폚 and 0 占 폚, respectively, after the raw materials 31 and 30 having the elastic foam 32 attached therebetween.

The volume sheet cover member manufactured according to the second embodiment is capable of volume forming, and the soft feeling of the natural leather 31 is slightly improved as compared with the first embodiment, The part was changed to some peeling phenomenon.

[Example 3]

In Example 3, the molding temperature was set at 200 ° C for the upper plate 11, 210 ° C for the lower plate 12, and the molding time was 2 minutes and 40 seconds. The lower plate 12 was pre- After the power was turned off, the natural leather 31 (30) with the elastic foam 32 attached thereto was hot-pressed. The forming temperature is a temperature set in a state in which the upper plate 11 and the lower plate 12 of the hot press 10 are in contact with each other and the temperature of the upper plate 11 and the lower plate 12 of the hot press 10, The temperature of the upper plate 11 and the lower plate 12 at the time of thermocompression bonding is 190 占 폚 and 200 占 폚, respectively, after the fabrics 31 and 30 with the elastic foam 32 attached therebetween are opened.

The volume sheet cover member manufactured according to Example 3 had a molding volume superior to that of Example 2 and retained the feeling of raw material without changing the soft feel of the natural leather 31. The peeling phenomenon It is gone.

[Example 4]

In Example 4, the molding temperature was set at 200 ° C for the upper plate 11, 210 ° C for the lower plate 12, and the molding time was set at 3 minutes and 30 seconds. The lower plate 12 was pre- The natural leather 31, 30 with the elastic foam 32 attached thereto was hot-pressed in a state in which the power was turned off and the press pressure was increased as compared with Example 3. The forming temperature is a temperature set in a state in which the upper plate 11 and the lower plate 12 of the hot press 10 are in contact with each other and the temperature of the upper plate 11 and the lower plate 12 of the hot press 10, The temperature of the upper plate 11 and the lower plate 12 at the time of thermocompression bonding is 190 占 폚 and 200 占 폚, respectively, after the fabrics 31 and 30 with the elastic foam 32 attached therebetween are opened.

The volume sheet cover member manufactured in accordance with the fourth embodiment is superior to the second embodiment in molding volume and maintains the feeling of raw material without changing the soft feel of the natural leather 31. The peeling phenomenon It is gone. Compared with Example 3, the molding volume property was also increased.

[Example 5]

In Example 5, the molding temperature is set to 200 ° C for the upper plate 11, 200 ° C for the lower plate 12, and 1 minute and 40 seconds for the molding. The lower plate 12 is pre- The natural leather 31, 30 with the elastic foam 32 attached thereto was hot-pressed in a state in which the power was turned off and the press pressure was increased as compared with Example 3. The forming temperature is a temperature set in a state in which the upper plate 11 and the lower plate 12 of the hot press 10 are in contact with each other and the temperature of the upper plate 11 and the lower plate 12 of the hot press 10, The temperature of the upper plate 11 and the lower plate 12 at the time of thermocompression bonding is 190 占 폚 and 190 占 폚, respectively, after the raw materials 31 and 30 with the elastic foam 32 are placed therebetween.

The volume sheet cover member manufactured according to Example 5 has a molding volume superior to that of Example 2 and retains the feeling of raw material without changing the soft feel of the natural leather 31 and the peeling phenomenon It is gone. Compared to Example 3, the molding volume was increased, and the molding time was reduced as compared with Example 4.

Table 1 below summarizes the molding conditions of Examples 1 to 5 described above.

In all of Examples 1 to 5 described above, volume formation was possible. Particularly, in Examples 4 to 5, the molding volume was excellent, and the softness of leather was maintained and the peeling phenomenon was eliminated. Therefore, it is possible to sew only the side portion, thereby reducing the labor cost and the working time, and it is possible to design stitches, diamonds, dots and the like at the sewing site at the time of molding.

On the other hand, as a result of processing the puff (Rubicell) and the emulsion foam of the cosmetic product according to the molding method according to the present invention, eight kinds of cosmetic test items (moisture sensation, radiance, spreadability, oiliness, persistence, adhesion, moisturizing power, The phenomenon of accumulation in the puff can be improved.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

10: Thermal press (device)
11: upper plate
12: Lower plate
12a:
12b: non-
12c: Stitch groove
30: Fabric with elastic foam attached
30a:
30b:
30c: Stitch projection
31: Fabric
32: Elastic foam
70: volume seat cover member

Claims (24)

(a) attaching an elastic foam having a predetermined thickness to one surface of the fabric; And
(b) placing the resultant product of step (a) between an upper plate and a lower plate of a hot press and thermo-compressing the same, wherein the upper plate of the hot press uses a flat plate and the lower plate of the hot press comprises a volume plate And thermocompression bonding using a plate formed on one surface of the one or more concave portions corresponding to a volume (convex) shape,
Wherein the other surface (unattached surface) of the fabric is positioned to correspond to one surface of the lower plate in the step (b)
In the step (b), the upper plate is heated to a first temperature, the lower plate is preheated to a second temperature which is relatively higher than or equal to the first temperature, Wherein the cover member is pressed against the cover member. delete The method according to claim 1,
Wherein the first temperature is 190 to 200 占 폚 and the second temperature is 190 to 210 占 폚. The method of claim 3,
Wherein the thermocompression pressure in the step (b) is 500 to 1000 kg. 5. The method of claim 4,
Wherein the thermal compression bonding time in the step (b) is 100 to 210 seconds. delete delete delete delete The method according to claim 1,
Wherein the plate having one or more concave portions formed on one surface thereof is a jig plate integrally formed with or detachable from the lower plate. The method according to claim 1,
The method of manufacturing a volume seat cover member according to claim 1, wherein in the step (b), a plurality of stitch grooves corresponding to stitch shapes are formed between the concave portion and the concave portion of one surface of the lower plate, Way. The method according to claim 1,
Further comprising the step of sewing a pressed portion of the edge of the volume sheet cover produced as a result of the step (b). The method according to claim 1,
In the step (a), at least one of a flame lamination method, a full bonding method, a hot melt method, a dry bonding method, and an indirect thermal bonding method using an IR heater is used. ≪ / RTI > The method according to claim 1,
Wherein the elastic foam comprises at least one of a sponge foam, a filter foam, and a PET elastic puck. The method according to claim 1,
Wherein the fabric is a natural leather, a synthetic leather, a leather having ventilation holes, or a fabric. delete delete delete delete delete delete delete delete delete

Images