KR840000161B1 - Apparatus for the manufacture of a locked material of filament - Google Patents

Abstract

A manufacturing device for a padding block of staple fibre material, such as for upholstery, consists of a pressor(2) for which short fibres of a three-dimensional climped synthetic fibres are pressed into a shaped block, a device(3) for which an adhesive is applied, and a drier(4) in which the body is lifted in a general vertical direction and, at the same time, a dielectric heating is applied to dry the adhesive on the block.

Description

Filament Lock Material Manufacturing Equipment

1 is a perspective view of a double stranded filament.

2 is a perspective view of a three-dimensional filament.

3 is a schematic cross-sectional view of an apparatus for manufacturing filament lock material according to the present invention.

4 is a perspective view of the main part of the apparatus shown in FIG.

5 is a perspective view of a dielectric heating apparatus used in the present invention.

The present invention relates to a device for producing a filament lock material, and in particular, to an apparatus for producing a filament lock material in which an adhesive used in a lock material that is a synthetic fiber filament aggregate having three-dimensional curls is uniformly dispersed and attached.

The present inventors have already shown that the filament lock material which cuts the filaments having three-dimensional curls to predetermined dimensions and then crushes them into sponges, compresses to a predetermined shape, and combines the adhesive points of the filaments with adhesives. Found. (U.S. Patent 4,172,174)

In addition, the filament of the synthetic fiber filament assembly having a three-dimensional curled face is a cushioning system of each contact point is bonded with an adhesive of the filament curl shape of the cushioning material is formed by stretching the elastic deformation of the shape of the filament of the cushion material It was also found that the filament lock material formed by forming the fall portion in the direction of lowering the load strength and forming the fall portion in response to the required load strength has a better effect.

These filament lock materials are compressed by means of a circulating belt and / or roller, rubbing, or the like to form a filament aggregate block having a predetermined multiplicity, and a needle with barbs is used. Circulate to run almost horizontally by spraying adhesive liquid from the top or immersing the filament molded body in the adhesive liquid and then lifting it in the filament molded body placed in the circulating belt running in the horizontal direction It is produced by heat drying on a belt.

However, when the adhesive is applied to the filament molded body in such a manner, the adhesive adhered to the molded body is allowed to fall inside the filament molded body until the drying is completed, and in particular, the viscosity decreases due to heating, and thus the flow rate is remarkably obtained. The filament lock material had an extremely uneven defect in that the amount of adhesion of the adhesive was small at the top and increased toward the bottom. In addition, the adhesive not only maintains the molded body but also falls on the circulating belt for transporting the molded body, thereby causing the belt to be damaged, deteriorating workability, and causing adhesive loss.

In addition, in the case of applying the adhesive by the dipping method, when the heating apparatus and the liquid tank are in close proximity, the adhesive liquid in the adhesive liquid tank is also heated by the radiant heat from the heating apparatus, so that the solvent evaporates to change the composition, and the loss of the adhesive is also brought about.

It is therefore an object of the present invention to provide an apparatus for producing a filament lock material in which the adhesive is uniformly attached to the dispersion. The object of the present invention is to dry the adhesive adhered by dielectric heating while immersing the filament molded body obtained by compression molding a synthetic fiber filament short fiber having three-dimensional curls into a predetermined shape in an adhesive liquid and raising the molded body in a substantially vertical direction. By the device.

Synthetic fibers used in the present invention include polyester, polyamide, polypropylene, etc., but polyester is most preferred and its thickness is 30-2,000 deniers, preferably 50-1,000 denier, and most preferably monofilament. It is a three-dimensional filament that is 100-600 denier. The three-dimensional curl here means a wide range of three-dimensional curl, such as two-way and three-way curl, but is preferably a three-way three-dimensional filament. For example, by the method and apparatus disclosed in the US Patent No. 4,154,051 by the inventors to form a double-reed filament D as shown in Figure 1 and then cut into a predetermined dimension and decomposed as shown in Figure 2 The same tridirectional three-dimensional filament F is obtained. The filament length after the surface is preferably 25-200 mm, particularly preferably 60-150 mm. The part of the filament F is coiled on the b part in the a part, and the c part is coiled on the d part. But part e does not coil over part f but coils beneath it. Thus, the filament portions from e to d are two strands or spiral coils. This is commonly referred to as a non-directional spiral, similar to a poor eddy telephone cord in which one of the coils is non-oriented relative to the other. Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The apparatus of the present invention is constituted as a filament supply apparatus 1, a compression molding apparatus 2, an adhesive attaching apparatus 3 and a drying apparatus 4 as shown in FIGS.

The filament supply device 1 has a filament supply port 5 having an opening in a substantially vertical direction whose opening area S ₁ is the same throughout. In the lower part of the supply port 5, the circulation conveyors 6 and 7 and the guide plate 8 which oppose in parallel are provided.

The upper part of the circulating conveyors 6 and 7 forms the tapered part 9 and the lower part thereof is formed in parallel to form the compression part 10 of the filament assembly. The upper end opening of the electrical taper portion 9 communicates with the lower end opening of the supply port 5. The circulating conveyors 6 and 7 are composed of rubber belts or caterpillars, and a plurality of rollers may be installed in close succession. Since the upper part of the compression part 10 communicates with the lower end of the supply port 5, it is formed almost vertically, but the lower part may be formed horizontally considering the relationship of the adhesive agent mentioned later and other processing means. The circulating conveyors 6, 7 move in the direction of the arrow by sprockets 11, 12, 13, 14, 15, etc., connected to a power source (not shown).

The opening area S ₂ of the opening through which the filament aggregate passes in the compression section 10 is formed to be smaller than the opening area S ₁ of the supply port 5. On the upper part of the filament supply port 5, a sponge machine 16 and a filament conveying conveyor 17 are connected. The stack height of the filament supplied to the supply port 5 can be automatically controlled by a control device (not shown) which goes through detectors 20a, 20b, and 20c, such as a phototube and an electroluminescent diode-phototransistor.

The compression molding apparatus 2 is composed of a lowering part of the compression section 10 and a separate densification device 21 and the needling device 22. The densification apparatus 21 compresses the filament aggregate F ₂ to a predetermined multiplicity by moving the horizontal bar 24 fixed to the tip of the rods 23 by the crank 25. The needling device 22 moves up and down the moisture needle 26 having at least one barb by crank 27 to needle the predetermined portion to give compressive strength in the direction to improve cushioning properties.

The adhesive attaching device 3, which is continuously installed in the molding apparatus 2, is provided with conveying devices 28 and 29, such as a rule-circulation belt and a Carter filter, and a liquid tank 30 in which the adhesive liquid 60 is accommodated.

On the rear side of the liquid column 30, a drying apparatus 4 is installed, which is shown in detail in FIG. 5, and a conveying apparatus 31 and a dielectric heating apparatus 32 for raising and transferring the adhesive-coated filament molded body F ₃ in a substantially vertical direction. It is done.

The conveying device 31 includes a lifting cam device 34 mounted on a rack 33, an arm 35 interlocked therewith, a plurality of needles 36 horizontally disposed on the arm 35, an inflow cylinder 37 for reciprocating the needles in a horizontal direction, and Transmission 38 is installed.

In the heat sink 36, at least two rows are installed at the upper and lower ends of the guide 39 in which a radio wave absorber is mounted on the inner surface of the dielectric heating device 32. These are for example two rows on the top is the mouth of the esam filament assemblies F ₃ and prevents the propagation of nuye same time as the anti-fall and collapse to raise the assembly F _3. The dielectric heating device 32 is composed of a magnetron 40 and a range 41, where the filament aggregate F ₃ passes through a guide 39 installed in the range 41.

In the drying apparatus 4, conveying apparatuses 42 and 43, such as a circulation conveyor, are provided continuously. On the other hand, the power shifted in the transmission 38 is transmitted to the sprockets 46 and 47 through the chain 49 by the rotation of the sprocket 45, and at the same time to the sprocket 48 through the chain 50. Therefore, the cam side 51-52 is rotated by the rotational force transmitted to the sprocket, and the sinking 36 rises at the same speed as the running speed of the assembly F ₃ as long as it is inserted into F ₃ in the filament assembly by the cam mechanism of the lifting cam device 34. After a certain time, the retreat by the action of the cylinder 37 and the other immersion 36 is inserted into the aggregate F ₃ and the above process is repeated.

It will be described below to produce a filament lock material with the apparatus of the present invention. Synthetic fiber filament F ₁ having a large denier three-dimensional curl shown in FIG. 2 is sent to the sponge level 16 by belt conveyor 17 as shown in FIGS. 3 to 4 and filament at exit 44 by wind pressure or the like. It is supplied to supply port 5. The filament F ₁ supplied gradually accumulates in the lower part of the supply port 5 and at the same time reaches the compression section 10 of the molding apparatus 2. Circular cone bay after 6, filament aggregate being conveyed by 7, with the electrician geupgu 5 of the opening area S ₁ and the compression section 10 of the opening area S ₂ between the passing through the compression section 10 ratio S ₁ / S ₂ (> ₁ Is compressed at a predetermined compression ratio (rising density). On the other hand, since the deposition height of the filament F ₁ and the feed rates of the circulating conveyors 6 and 7 in the supply port 5 affect the density of the compressed filament aggregate F ₂ , the deposition height is detected by the detectors 20a, 20b, and 20c. Control and adjust the feed rate of _{1 and} the feed rate of circulation conveyors 6 and 7.

The compressed filament aggregate F ₂ is densified by the bar 24 between passing through the densification apparatus 21 as needed, and has a predetermined multiplicity. The filament aggregate block thus compressed usually has a multiplicity of 0.002-0.2 g / cm 3, preferably 0.05-0.08 g / cm 3. The compression molded filament aggregate block is conveyed by the conveying apparatuses 28 and 29, immersed in the adhesive liquid 60 in the adhesive liquid tank 30, and then lifted by the other conveying apparatus 31 in a substantially vertical direction. While the aggregate block is pulled up, the flow of the adhesive liquid therefrom is inhibited by the surface tension of the liquid itself, while the extra adhesive adhering to the filament molded body F ₃ flows into the molded body. Subsequently, it passes through the high-frequency dielectric heating device 32, and the moisture or solvent of the extremely instantaneous adhesive is evaporated and at the same time hardened to some extent, the respective contact points of the filaments are joined together, and then moved to the conveying devices 42 and 43. Is cut into

On the other hand, when the filament molded body is pulled up in the vertical direction, if the molded body may be sprayed, a small amount of adhesive liquid may be spray-dried onto the molded body that runs horizontally before immersion treatment to perform temporary adhesion.

Typical adhesives include synthetic rubbers such as styrene-butadiene rubber, acrylonitrile-butadiene rubber, chloroprene rubber and urethane rubber, natural rubber, vinyl acetate adhesive, cellulose acetate adhesive, acrylic adhesive, and the like. Used in the form of The adhesive application amount is usually 10-200 g / 100 g filaments, preferably 50-120 g / 100 g filaments, based on the solid content.

The filament molded body F ₃ passing through the high-frequency dielectric heating device 32 has a sufficient power density to give the filament molded body by heat-drying the adhesive liquid at a high frequency of 1 MHz to 300 GHz, preferably 10 MHz to 30 MHz, that is, 0.1-10 KWh / A power of 3 cm 3, preferably 0.5-5 KW / cm 3 is applied to heat and remove the moisture and the solvent, and the filament interconnection point is well bonded.

Therefore, even if the filament molded body F ₃ is raised, it is not cut | disconnected midway by its own weight and adhesive weight.

In some cases, it may be passed through an ordinary drying furnace (not shown), and 10-60 minutes (preferably 15-) at a temperature of 80-200 ° C (preferably 100-150 ° C) by hot air, infrared rays or superheated steam. 40 minutes), then curing is performed and cut into predetermined dimensions by a cutter.

If good resilience is required so that the lock material can be used as a cushioning material, the filament aggregate block F ₂ is subjected to a lidling device 22 before the adhesive treatment.

In the manufacture of the filament lock material according to the present invention, the adhesive solution is attached to the filament molded body obtained by compression molding the opened three-dimensional synthetic fiber filament into a predetermined shape, and then the molded body is pulled in a substantially vertical direction at high frequency. Since the adhesive adhered to the molded body by the dry heating by the adhesive, the excess adhesive liquid adhered to the molded body in the adhesive liquid tank flows down into the molded body while being pulled in a substantially vertical direction. Therefore, only the amount corresponding to the concentration of the adhesive liquid used and the pulling speed of the filament assembly is uniformly attached to the molded body. Moreover, the excess adhesive liquid uniformly attached to the molded body is dried in an instant because it is dielectrically heated by high frequency.

Therefore, even if the molded body is pulled upward, the amount of the flow of adhesive liquid is small, and only the required amount can be attached, and there is no fear of cutting or stretching in the middle due to the weight of the filament and the weight of the adhesive liquid attached.

Thus, in the present invention, by heating the adhesive filament molded body adhered with the adhesive liquid by high frequency, the adhesive medium, that is, the solvent in the adhesive liquid, especially water, is first heated and evaporated without damaging the next synthetic fiber filament. Rubber and the like are heat cured. In addition, since the heating object is a filament assembly, the penetration depth of the high frequency is large, so that the heating body is uniformly heated and the loss of the adhesive is reduced.

Therefore, the filament lock material having a uniform adhesive distribution is produced by the apparatus of the present invention.

Claims (1)

As described above and shown in the figure, a molding apparatus 2 for compression molding the filament aggregate F ₂ supplied by connecting to the apparatus 1 for supplying the synthetic fiber filament short fibers having a three-dimensional curl is installed, and then the molded article F ₃ is conveyed. And a drying apparatus 4 including a dielectric heating apparatus 32 for drying while applying the adhesive attaching device 3 and the adhesive attaching molded body F ₃ in a vertical to almost vertical direction to apply the adhesive.

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