KR950014384B1 - The method and apparatus for coating the hot-melt on the heat sealable textile of garments - Google Patents

Abstract

Adhesive supplied from a hopper is transferred in relief on the surface of the rotating and transferring belt, the adhesive is coated on the surface of textile between the belt and a smoothing roller. The adhesive is filled by a blade(B) in sevral concave grooves(8) provided on the surface of an endless belt(4), and a volume of the adhesive is controlled in advance. The heated liquid adhesive in the concave groove(8) is transferred to the textile by a pressure of the smoothing roller(SR), and coated to give the hot-melt textile.

Description

Method and apparatus for coating thermal adhesive on cloth in hot-adhesive cloth of pneumatic tire

1 is a schematic view showing one embodiment of an apparatus according to the present invention,

2 is an enlarged cross-sectional view showing only a part of a product manufactured according to the present invention;

Figure 3 is a schematic diagram showing an example of a conventional apparatus for the present invention,

Figure 4 is a schematic diagram showing an example of a conventional apparatus for the present invention,

5 (a) and 5 (b) show partial enlarged cross-sectional views of products obtained by the conventional apparatus, respectively.

* Explanation of symbols for main parts of the drawings

4: endless belt 8: groove

10: heating means 12: forge

14 heat-sensitive adhesive fabric 20 liquid crystal

SR: Smoothing Roller H, H ': Hopper

B, B ': Blade

The present invention relates to a method and apparatus for coating a heat adhesive on the outer surface of a forge in a heat-adhesive fabric used as various garment wicks and industrial subsidiary materials, and more particularly, a heat adhesive coating means. The present invention relates to a method and apparatus for miniaturizing a machine structure and improving quality and productivity by means of a belt having a hemispherical groove engraved over a surface.

Prior arts include the Kufner method of US Pat. No. 4,141,313 (79.2.27) and the PICADIE method of US Pat. No. 4,906,492 (90.3.6). In addition to the shortcomings of expense, there is a somewhat unstable factor in the quality of the obtained product. In other words, the former is coated with a powdery adhesive on the surface of one side of the fabric by passing a predetermined pressure between the heating roller and an engraved roller filled with the adhesive supplied from the hopper. By passing the fabric formed in the form of a dot, the adhesive is passed back into the heating means (Gelling Tunnel) by the heat of the adhesive is melted and fixed on the surface of the fabric to obtain a heat-adhesive fabric.

However, the electronic prior art (US Pat. No. 4,141,313) receives high temperature heat when passing through a wrapping roller that removes moisture from the fabric itself and heats the adhesive so that it is easy to settle on the fabric. do.

At this time, since the heat is usually at a temperature far above the melting point of the powder adhesive, curing and carbonization are caused, resulting in deterioration of quality.

In addition, the fabric that is subjected to high temperature is pressed with the transfer roller by the pressure of the heating roller, and receives the powder adhesive in the hemispherical groove formed on the surface of the transfer roller. When the pressure is too high, the fabric edge is crushed by the high temperature and high pressure. Will be damaged.

In addition, the powder adhesive, which is transferred in the form of dots on the surface of the fabric while wrapping the transfer roller, is passed through the heating means in order to efficiently melt and fix the fabric. The phenomenon occurs and a hard product is obtained.

In addition, when using low-density fabrics, the powder adhesive falls out between the pores of the light and weft yarns and remains in the heating means, causing trouble. If a large amount of adhesive is trapped in the heaters, the adhesive passes through the heaters. Powder adhesive marks will be left on the fabric, which will result in the production of defective products.

In particular, since the method allows the powder adhesive in the hemispherical groove formed in the transfer roller to be transferred to the fabric, the shape of the fabric adhesive transferred to the fabric is large because the upper portion is rounded like a circle and narrowly formed. There is a problem that a small amount of adhesive that contributes to improving the adhesive strength when the adhesive to the outer surface of the garment and the like may occur a lot.

It was developed in order to solve this problem by the Picadi method of the latter US Patent No. 4,906,492.

In this manner, as shown in FIG. 4, instead of the fabric, the anti-adhesive flat belt 7 is preheated in the heating roller 5 and passes through the transfer roller 3, wherein the transfer roller 3 is transferred to the hopper H. The powdery thermal adhesive (M) filled in several hemispherical grooves (9) concave over the outer surface of the sheet is transferred onto the spot on the surface of the belt (7) passing through the transfer roller (3). At the moment when the endless belt 7 having the powder thermal adhesive transferred to the sheet passes through the heating means 11, the powdery adhesive is liquefied by high heat, and the thermal adhesive in the liquefied state is in contact with the belt 7 It is a method of transferring by the pressure of the smoothing roller (SR) to the surface of the fabric (F) passing while wrapping the smoothing roller (SR) is rotated.

The belt 7 is continuously rotated indefinitely by the driving rollers 5, 5a, 5b, 5c and 5d. This method is a structure in which the fabric itself does not pass through the heating roller and the heating means directly in the electronic method, so that the fabric does not pass the high temperature, so that the fabric can have a texture as it is and obtain a soft product. There is an advantage. However, the latter has a problem that it is particularly difficult to adjust the pressure of the smoothing roller SR according to the thickness of the fabric and the raw material to be used. That is, when the pressure of the smoothing roller SR is weak, the spot-like droplets 3 transferred from the belt 7 to the surface of the fabric F and fused are as shown in the fifth (a). The upper part of the transferred dot is wide while the lower part is formed narrowly, which causes the adhesive to be weakly adhered to the fabric, causing the dot to fall off during use. On the contrary, when the pressure of the smoothing roller SR is increased, the heat adhesive penetrates into the fabric F, as shown in FIG. 5 (b), and the base area becomes wider and penetrates into the fabric F. While the amount of the adhesive increases, the adhesive part that contributes to the outer surface of clothing decreases, resulting in only the height of the droplets 13 being lowered, resulting in a high strike bag (reverse exudation) and touch. There are drawbacks that harden and weaken adhesion.

The present invention has been made in order to solve the above problems, and an object of the present invention is to provide an advantage that the heat-adhesive fabric has a natural feel without the direct heating roller and the heating means.

Another object of the present invention is to provide an advantage that the adhesive bag is always formed to a constant thickness on the outer surface of the forge so that a strike back and a hard feel do not occur.

Still another object of the present invention is to provide an advantage that the installation area is reduced by making the machine structure compact and the volume small.

Another object of the present invention is to simplify the structure of the machine provides a benefit of reducing the number of processes of production and work to reduce the cost of unnecessary energy.

Another object is to provide an advantage of easy operation.

That is, the present invention as a means for achieving the above object, on the surface of the continuously rotating transfer belt is embossed transfer of the adhesive supplied from the hopper by a transfer roller in a hemispherical shape, the transfer belt is in the liquid phase when passing through the heating means In the method of manufacturing a heat-adhesive fabric by coating the thermal adhesive on the belt on the surface of the fabric fed between the smoothing rollers, the bottom of the hopper into several hemispherical grooves recessed negatively over the entire surface of the endless belt. Oval dot, which is filled in the pre-adjusted amount of thermal adhesive by the blade of the blade and transferred to one side of the forge by the constant pressure of the smoothing roller applied to the belt groove side, while the thermal adhesive in the groove becomes liquid by the high temperature of the heater. It is a method of coating with a liquid to obtain a high quality heat-adhesive fabric.

In addition, the conveying belt continuously rotated by the drive roller, a heating means for receiving the adhesive supplied from the hopper into the groove and embossing the adhesive on the belt surface, and the belt so that the adhesive placed on the belt surface is transferred and coated outside the fabric surface. In the apparatus for manufacturing a heat-adhesive fabric constructed from a smoothing roller arranged adjacently to apply pressure to the surface side, the heat-adhesive agent which is pre-regulated by the blade under the hopper over the entire surface of the continuously rotating endless transfer belt. Is formed in the recess groove for the storage key and the thermal adhesive agent neutralized in the groove is an apparatus for manufacturing a heat-adhesive forge configured to constantly receive the pressure of the smoothing roller disposed on one side of the belt due to the depth of the recessed groove. .

The above objects and other features and advantages will become more apparent on the basis of the embodiments according to the accompanying drawings. The present invention is in no way limited by the following examples.

1 shows an embodiment according to the present invention. The same parts as in the prior art are denoted by the same reference numerals.

Reference numeral 1 denotes an apparatus according to the present invention, in which the drive roller 2 and the driven roller 2 'are provided with a transferless belt 4 for continuous rotation, and one end of the endless belt 4. Hopper (H) for supplying heat adhesive (M) is arranged adjacent to the belt 4 in the upper portion, and smoothing roller (SR) for applying pressure to the endless belt (4) at the other end is the belt (4). It is installed to rotate adjacent to).

In addition, the lower portion of the hopper (H) is provided with a blade (b) for supplying the thermal adhesive (M) by a predetermined amount and the heating means 10 is installed between the hopper (H) and the smoothing roller (SR) up and down Heat is applied to the belt 4 side. Since the blade (b) is a general technique in the above, a detailed description thereof will be omitted.

In particular, several hemispherical grooves 8 are recessed in an intaglio state at regular or irregular intervals over the entire surface of the anti-adhesive endless belt 4. In the present embodiment (FIG. 1), the groove 8 is shown to be hemispherical as an example, but may be formed in a square or trapezoidal shape.

The endless belt 4 has a thickness of 1 m / m to 10 m / m, and the mesh MESH of the groove 8 is approximately 3 to 50 mesh. Mesh here refers to the number of grooves 8 engraved per inch of belt surface. In addition, the material of the belt 4 is steel (STEEL), silicon (SILICONE), Teflon (TEFLON), or those coated with a silicon coating is used. In such a configuration, when the endless belt 4 is rotated in the direction of the arrow by the driving of the rollers 2 and 2 ', as shown in FIG. 1, the hopper H is located close to the upper part of the belt 4. The amount of powder adhesive M, which is present, is controlled by the blade b previously operated, thereby filling the groove 8 of the endless belt 4 by a predetermined amount. The powder adhesive M filled in the recess 8 of the belt 4 is liquefied by heat generated from the heater when it passes through the heating means 10 by the rotation of the belt 4.

As soon as the belt 4 continues to rotate in this state and comes in contact with the smoothing roller SR, the belt 4 is formed on one surface of the forge 12 fed between the smoothing roller SR and the belt 4. The liquid heat adhesive M in the groove 8 of the belt 4 is transferred by the pressure of the smoothing roller SR, which is subjected to a constant pressure to the shaft, and as shown in FIG. 12) the bottom area is in contact with the small oval dot (dot) droplets can be adhered to form a small but strong adhesive force is to produce a high quality clothing or industrial thermal adhesive fabric (14). .

That is, according to the present invention, even if the pressure of the smoothing roller SR is applied to the belt 4 side somewhat excessively, the groove 4 is formed on the belt 4 in an intaglio, so that the smoothing roller ( Since a constant pressure of SR is always applied, the liquid thermal adhesive M filled in the recess 8 is transferred to the outer surface of the forge 12 while maintaining a constant height as much as the depth of the recess 8. As shown in the figure, the droplet 20 on the most ideal dot is formed.

Therefore, various problems arising from the conventional "Cupner" method or the "Picadi" method, as well as difficulty in adjusting the input of the smoothing roller, are caused when the heating adhesive is coated on the fabric surface as shown in FIG. It eliminates the risk of strike back and strike thru (STRIKE-THROUGH), and has the effect of having high adhesion.

The heat adhesive (M) used in the above embodiment, a polyamide, polyester, polyethylene, polyvinyl chloride, ethylene vinyl acetate as a hot powder (Hot Melt), forge 12 kinds of plain weave, twill, runner Woven, non-woven, warp knit or warp knit, and these materials are cotton, viscose rayon, cupro rayon, acetate rayon, nylon, polyester, polyacrylic, polyurethane, Polyethylene, polypropylene, and the like.

The heat-adhesive fabric 14 produced by the present invention is used for automobile interior materials, felt (FELT), cover paper, wrapping paper, wallpaper, etc. for various wicks and industrial subsidiary materials for outerwear.

3 shows another embodiment of the apparatus according to the present invention, in which like parts are shown with the same reference numerals.

FIG. 3 is a double dot coating method, and two hops (H) (H ') are provided at a predetermined interval adjacent to the endless belt (4). Accordingly, the endless belt 4 that is rotated by inserting the heat adhesive M of the low temperature type into the first hopper H and inserting the heat adhesive M 'of the high temperature type into the second hop H'. Into the groove 8 of the first, the amount of powder heat adhesive (M) is controlled and filled by the pre-adjusted blade (b) of known structure from the first hopper (H). At this time, the low-temperature thermal adhesive (M) is filled about 1/2 in the groove (8). This is achieved by adjusting the blade b.

Subsequently, the endless belt 4 passes through the second hopper H '. From the second hopper H', the blade B 'into the groove 8, which is already filled with the heat adhesive M of the low temperature taper. The heat adhesive (M ') of the high-temperature type controlled by the filling is filled, and the double heat adhesive, which becomes a liquid through the heater, is transferred to one surface of the forge 12 by the pressure of the smoothing roller (SR), Again, as shown in FIG. 2, a heat-adhesive cloth 14 having a dot shape and having a droplet 20 having a two-layer structure (fabric + high temperature + low temperature) is produced.

When using the heat-adhesive fabric manufactured by the double dot coating method as a garment wick, the low temperature heat adhesive portion contributes to the adhesive strength during melting and the high temperature adhesive portion has the advantage of suppressing the strike bag from appearing. have.

In particular, the double dot coating method according to the present invention is characterized in that the amount of the adhesive can be adjusted in the first hopper (H).

Claims (7)

On the surface of the conveying belt, which is continuously rotated, the adhesive supplied from the hopper is transferred to the hemispherical shape by the transfer roller 3, and when the conveying belt passes through the heating means, the heat adhesive on the upper surface of the belt which becomes liquid by high temperature is transferred to the belt. In the method for producing a heat-adhesive fabric by coating the surface of the fabric passing between the and the smoothing roller (SR), the hopper (H) into several grooves (8) concave intaglio over the entire surface of the endless belt (4) The amount of the heat adhesive in the groove 8, which is made liquid by the high temperature of the heater, and the amount of the heat adhesive in the liquid phase is increased by the blade b at the bottom of the blade b) is always applied to the belt groove side. A method of coding a thermal adhesive to obtain a heat-adhesive fabric by coating it with an oval dot-shaped droplet (20) laid down on one surface of the forge supplied under constant pressure. The method of claim 1, wherein the thermal adhesive is polyamide, polyester, polyethylene, polyvinylchloride, or ethylene vinyl acetate as a hot powder. The method of claim 1, wherein the forge is plain, twill, runner, nonwoven, warp knit or weft knit. 2. The method of claim 1, wherein the dot-shaped droplets (20) are coaxed into an elliptic shape lying on the surface of the forge without being penetrated into the forge. The transfer belt 7 continuously rotated by the drive roller, the transfer roller 3 which receives the heat adhesive supplied from the hopper into the groove 9 and then transfers it embossed onto the belt surface, and the adhesive embossed on the belt surface And a heating means for heating to a heat-adhesive, and an apparatus for manufacturing a heat-adhesive fabric constructed from adjacently arranged smoothing rollers (SR) so that the liquid adhesive placed on the belt surface is pressed onto the belt surface to be transferred and coated onto the fabric surface. Thus, the recess 8 is formed in an intaglio to receive a thermal adhesive that is pre-adjusted with the blade b at the bottom of the hopper over the entire surface of the endless transfer belt 4 which is continuously rotated, and the recess 8 The apparatus for manufacturing a heat-adhesive fabric, wherein the heat-adhesive filled in) is always subjected to a constant pressure of the smoothing roller (SR) disposed on one side of the belt due to the depth of the recessed groove (8). 6. The device according to claim 5, wherein the grooves (8) are hemispherical, square or trapezoidal and are engraved on the surface of the transfer belt (4), the mesh of the grooves being 3 to 50 mesh. 6. A device according to claim 5, wherein a plurality of hoppers (H ') (H') are provided on the surface of the transfer belt (4) to adjust the amount of heat adhesive supplied into the groove (8).