JPS61220751A - Producing apparatus for cloth fixed with adhesive - Google Patents

Abstract

PURPOSE:To enable an adhesive to be precisely coated on the cloth like a required pattern so that the cutting cloth is not floated up even in impressing DC voltage by using a coating machine of a liquid and sticking closely the cutting on a pallet with the wetting force of the liquid. CONSTITUTION:The following powdery grains of an electrically-chargeable adhesive are fed on the above surface of an electrically-conductive screen 9 by an adhesive feeder 7 which are capable of passing through the opened holes of the screen 9 provided with many opened holes corresponding to a required pattern coating the adhesive. Also a pallet 2 conveying the cloth 1 just under the screen 9 is wetted by a coating machine 4 of a liquid. The pallet 2 is conveyed just under the screen 9 with a belt conveyor 6 and also vertically moved just under the screen 9 with a pallet elevator 11. Furthermore DC voltage is impressed between the screen 9 and the pallet 2 with an electric power source 10 to form a electrostatic field, and also the adhesive mounted on the cloth 1 is fixed on the cloth 1 with the adhesive fixing machines 12, 13.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a manufacturing apparatus for manufacturing cloth to which an adhesive is fixed.

[Conventional technology]

Currently, true melt adhesives are used in the form of adhesive interlining in the production process of clothing and the like.

As an adhesive interlining, it is applied randomly on top of a continuous interlining material.
Alternatively, powdered hot melt adhesive may be applied in a fixed dot pattern using a gravure coater, or powdered hot melt adhesive may be dispersed in a viscous aqueous solution to form a paste and then applied using a cylindrical screen coater. Alternatively, as disclosed in Japanese Patent Publication No. 57-42113, a powdered hot melt adhesive is fluidized in a fluidized bed and applied by Coulomb force, and then heat is applied to form the true melt adhesive. A material that is fused and integrated with the interlining material is used.

Adhesive interlining is a continuous fabric with an adhesive fused to the entire surface in a random or regular dot pattern.

Then, the adhesive interlining is cut into the required shape, aligned to the required part of the fabric that makes up the garment, basted, and bonded together by heat and pressure to provide shape retention and fullness. It is being done.

[Problem that the invention seeks to solve]

In the field of adhesive interlining mentioned above, since the basting and lock stitching processes require personnel, there are various problems in terms of product production efficiency and uniformity of product quality, and it is not necessary to employ personnel. There is a strong need for the development of sewing processes.

In order to solve the above problems, the present inventor has developed a method for directly applying and fixing powdered hot melt adhesives and post-crosslinkable powdered real melt adhesives to cut fabrics without using an adhesive interlining. As a result of various studies regarding the device, we found a device that applied the principles of electrostatic screen printing disclosed in Japanese Patent Publications No. 14342-1970, Japanese Patent Publication No. 25650-1982, Publication No. 33168-1974, etc., which had the following points: It was recognized that it was excellent.

(i) Since the amount of adhesive applied can be freely controlled, the hardness of the cloth can be freely adjusted, and the cloth itself can be given an interlining substitute function.

(ii) It is possible to bond fabrics together by applying adhesive thickly in a thin line, and it is possible to develop strong adhesive force (peel strength) without impairing the texture of the fabric, making it possible to use it as an alternative to sewing. Become.

(iii) The adhesive application pattern can be easily changed by replacing the conductive screen, making it suitable for applying adhesive to a wide variety of cut fabrics in small quantities.

However, when electrostatically applying powdered adhesive to cut fabric, there is a problem in that the fabric itself becomes polarized and charged due to the electric field and is attracted to the conductive screen, making it impossible to properly apply the adhesive. .

[Means for solving problems]

The inventors of the present invention have further investigated various improvements regarding the above-mentioned problems, and as a result, have found a solution to the above-mentioned problems and completed the present invention.

That is, the present invention comprises: (a) a conductive screen provided with a large number of apertures corresponding to a desired adhesive application pattern; and (b) charged adhesive powder particles that can pass through the apertures of the conductive screen. (c) a liquid applicator for wetting the pallet conveying the fabric directly below the conductive screen; (d) a liquid applicator for wetting the pallet directly below the conductive screen; (e) a pallet elevator for raising and lowering the pallet directly under the conductive screen; (f) a power source for applying a DC voltage between the conductive screen and the pallet to form an electrostatic field; ) An apparatus for producing an adhesive-fixed cloth is provided, which is characterized by having an adhesive fixing device for fixing an adhesive placed on the cloth onto the cloth.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be explained below with reference to the drawings showing embodiments.

FIG. 1 is a perspective view showing an embodiment of the adhesive-fixed fabric manufacturing apparatus of the present invention. In FIG.
Before being placed, the surface is moistened with a sponge roll 4 impregnated with liquid supplied from a liquid supply tank 3 through an on-off valve. The liquid used here is water,
It can be dried and removed relatively easily without damaging the color pattern of the fabric, such as ethanol, trichlorethylene, perchlorethylene, etc.

After the pallet surface is moistened with liquid, the cloth 1 cut into a predetermined shape is placed on the pallet 2 and pressurized by a rubber roll 5 so as to be brought into close contact with the pallet. The cut cloth 1 is placed on the pallet after being positioned so that the adhesive application pattern 9 on the conductive screen matches the adhesive portion of the cut cloth.

The pallet 2 is attached to the conveyor 6 by electromagnets or clamps. As the conveyor is driven, the pallet 2 is transported directly below the conductive screen and stopped. Then, the pallet 2 and the conveyor 6 are released from the electromagnet or clamp, and the pallet elevator 11 and the pallet 2 are moved by the electromagnet or clamp. Fix it and move it up and down so that the distance between the conductive screen and the pallet is 1 = 10 mm.
Adjust to the desired appropriate distance within the range. Next, a DC voltage is applied between the conductive screen and the pallet by the power supply 10, and the powdered adhesive supplied from the adhesive supply box 7 is rubbed into the conductive screen by the adhesive rubbing brush 8. A charged powder adhesive is applied to a predetermined adhesive portion of the cut fabric on the pallet using Coulomb force. Note that it is also possible to use the pallet elevator 11 as a counter electrode to the conductive screen.

The cut fabric coated with powder adhesive is transported by pallet elevator 1.
1 is brought back onto the conveyor and fixed to the conveyor by an electromagnet or clamp. Next, the cut fabric is sent along with the pallet to an adhesive fixing machine.

The adhesive fixing machine has a push-up roller 13 as shown in FIG.
In the case of a fixing device consisting of a heat roller 12 whose surface has been treated with a mold release agent such as polyfluoroethylene,
The cut cloth coated with the adhesive is fed into the push-up roller 13 and the heat roller 12 and bonded under heat and pressure, thereby becoming an adhesive-fixed cloth. The scraper 20 can prevent the cloth from wrapping around the heat roller 12.

The adhesive fixing machine is equipped with a far infrared heater 1 as shown in Figure 2.
4, the cut cloth coated with adhesive is heated by the far-infrared heater 14 and becomes an adhesive-fixed cloth.

When the adhesive fixing machine has a solvent heating tank 16 and a high-pressure solvent vapor injection nozzle 15 as shown in FIG. 3, the cut fabric coated with adhesive is bonded by being sprayed with the solvent. It becomes the agent fixing cloth. In Figure 3, 17
1 is a solvent vapor absorption port, and 18 is a solvent vapor absorption cooler.

The liquid used to adhere the cut fabric to the pallet was
It is removed in this adhesive fixing process.

[Effect]

The functions of the main points of the present invention will be described below.

There are slight differences depending on the fiber composition, weight (weaving density or knitting density), moisture content, etc. of the fabric, but if the cut fabric is simply placed on a pallet and then placed in a voltage generator and a high voltage is applied. , the cloth itself becomes polarized, resulting in a voltage of about 3 to 4 kV/
When a voltage of cm is applied, the cut fabric is attracted to the conductive screen. Therefore, it is difficult to apply a predetermined amount of powdered adhesive at a predetermined position with high precision.

In order to increase the amount of adhesive applied and form a clear application pattern on the cloth, the discharge voltage (approximately 8 to 10 kV/c
m) It is desirable to use as high a voltage as possible in the following areas.

By adopting the liquid applicator of the present invention, the cut cloth can be tightly fixed on the pallet by the wetting force of the liquid, and the cut cloth will not lift up even when a DC voltage of 3 to 8 kV/cm is applied. , the adhesive can be accurately applied onto the cloth according to the desired pattern.

〔Effect of the invention〕

By using the powder adhesive fixing machine of the present invention, it is possible to apply and fix the powder adhesive onto the cut cloth according to an arbitrary application pattern formed on the conductive screen, as shown in FIG. By coating one side of the cloth 1 with an adhesive 19, interlining functions such as preventing the cloth from elongating, imparting tension, and retaining its shape can be provided. As a result, the conventional process of cutting the adhesive interlining, overlapping it in a predetermined position on the fabric, basting it, and heat-pressing it can be omitted, and the interlining process can be simplified. Alternative functions can be expressed.

Further, as shown in FIG. 5, a powdered adhesive 19 is applied and fixed to the necessary areas around the cut cloth 1, and the cut cloth is folded, or the cut cloth is overlapped with another cloth. hand,
By heat-pressing, adhesive processing such as bending and joining can be performed, so there is no need for manual sewing as in the past, and it becomes possible to promote automation of the garment assembly process.

[Brief explanation of drawings]

The drawings show embodiments of the present invention, and FIG. 1 is a perspective view of the adhesive fixing cloth manufacturing apparatus of the present invention, and FIG. 2 is a perspective view of the adhesive fixing machine having a far-infrared heater. FIG. 3 is a partial perspective view of the adhesive fixing machine having a solvent heating tank and a high pressure solvent vapor injection nozzle. FIG. 4 is a perspective view showing an example of an adhesive application pattern to cut cloth for the purpose of replacing interlining, and FIG. 5 is a perspective view showing an example of an adhesive application pattern to cut cloth for the purpose of sewing replacement. . 1... Cloth, 2... Pallet, 3... Liquid supply tank, 4... Sponge roll, 5... Rubber roll, 6
... Conveyor, 7... Adhesive supply box, 8...
・Adhesive rubbing brush, 9... Adhesive application pattern on conductive screen, 10... Power source, 11... Pallet elevator, 12... Heat roller, 13...
Push-up roller, 14... Far infrared heater, 15.
...High-pressure solvent vapor injection nozzle, 16...Solvent heating tank,
17...Solvent vapor absorption port, 18...Solvent vapor absorption cooler, 19...Adhesive, 20...Scraper

Claims (1)

[Scope of Claims] 1(a) A conductive screen provided with a large number of apertures corresponding to a desired adhesive application pattern; (b) Chargeable adhesive powder particles that can pass through the apertures of the conductive screen. (c) a liquid applicator for wetting the pallet conveying the fabric directly below the conductive screen; (d) a liquid applicator for wetting the pallet conveying the fabric directly below the conductive screen; (e) a pallet elevator for raising and lowering the pallet directly below the conductive screen; (f) a power source for applying a DC voltage between the conductive screen and the pallet to form an electrostatic field; (g) An apparatus for producing an adhesive-fixed cloth, comprising an adhesive fixing device for fixing an adhesive placed on the cloth onto the cloth. 2. The adhesive fixing fabric manufacturing apparatus according to claim 1, wherein the adhesive supply device (b) comprises an adhesive supply box and an adhesive rubbing brush. 3. The adhesive fixing fabric manufacturing apparatus according to claim 1, wherein the liquid applicator (c) has a liquid supply tank and a liquid application roll. 4. The adhesive fixing cloth manufacturing apparatus according to claim 1, wherein the adhesive fixing device (g) is a fixing device comprising a push-up roller and a heat roller whose surface is treated with a release agent. 5. The adhesive fixing cloth manufacturing apparatus according to claim 1, wherein the adhesive fixing machine (g) has a far-infrared heater. 6. The adhesive fixing cloth manufacturing apparatus according to claim 1, wherein the adhesive fixing machine (g) has a solvent heating tank and a high pressure solvent vapor injection nozzle.