JPS5832999B2 - Filling material and its manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a stuffing material and a method for producing the same, and more particularly to a stuffing material made of synthetic fibers for use in the same way as feathers in place of feathers, and a method for producing the same, and particularly to To obtain a filling material which is characterized by increasing the inter-fiber voids in the material as well as increasing the amount of voids between fibers;
The purpose is to make it continuously and efficiently to any size.

Feathers are often used as stuffing for futons, cushions, quilting, etc., but since feathers are a natural product,
It is difficult to increase production rapidly, so
Instead of natural feathers, there has been a desire for feather-like stuffing that can be used in the same way as natural feathers, and various ideas have been put into creating feather stuffing using synthetic fiber filaments.
It was difficult to find a material that had appropriate elasticity and compression resistance, had more voids between fibers, and also had drapability.

The present invention has been made in view of the above points, and an example of its implementation will be described below.

1 is a filling material of the present invention, in which a plurality of first filaments 3 constituting a water droplet-shaped or annular bent portion 2 have their ends concentrated at a concentration point 4, and at the concentration point 4 all the first filaments 3 are The ends of the filament 3 are fixed together.

Reference numeral 5 designates a plurality of second filaments made of crimped yarn, which are in a swollen state in which a large number of bends 6 smaller than the bends of the first filament 2 are intermingled, and the ends thereof are also similar to the first filament. It is fixed integrally with the first filament at the concentration point 4.

The small bends 6 of the second filament are mixed and swollen, so the density is higher than that of the first filament, which has large droplet-like or annular bends. The air layer can be retained between the filaments 3 and 2 better than the filaments 3 having the filaments 2 and 3.

The means for fixing at the concentration point 4 may be welding by heating or adhesion by adhesive.

Said concentration point 4 of the first filament 3 with a bend 2
As shown in FIG. 2A, the bent portion 2 has a water drop shape, and even if both ends of the first filament 3 are fixed and facing in the same direction, the concentration state is as shown in FIG. 2B. The bent portion 2 may be made circular in the opposite direction.

Furthermore, as shown in FIG. 2C, the bent portions 2 may be radially protruded around the concentrated point 4.

Furthermore, as shown in the second diagram, the bent first filaments may not be aligned, but may be oriented in any direction.

The second filament 5 is bent and bulky due to the crimping process, and even if the first filament is also crimped, it is still bulky compared to the first filament. It has been treated to produce stronger crimps than before.

The end thereof is fixed at a concentration point 4 and is integrated with a first filament 3 having a bent portion 2 .

As raw materials for the filling material of the present invention, synthetic fibers bundled in an appropriate number, such as polyester, nylon, polyacrylonitrile, etc., with filaments of 1.5 d to 15 d, especially filaments of about 4 to 6 d, are used, especially polyester with a high Young's modulus. is excellent.

Further, the above-mentioned filament has a perfect circular cross-sectional shape, and a trilobal triangular shape having a plum blossom-like pentagonal or hexagonal shape is good in terms of bulky and non-entangling properties.

Although the second filament is crimped, the first filament may also be crimped to the extent that its bent shape is not impaired.

When the filament is used as a filling, a smoothing agent may be attached to the surface of the filament in order to prevent the filling from intertwining with each other and to provide drapability.

The feathers T are entangled and attached to the part of the second filament 5 which is in a swollen state with a mixture of small bends.

Down is mainly used for the feathers 7, but feathers may also be attached.

Next, a method for manufacturing the filling material of the present invention will be explained.

The filling material of the present invention uses the tow 10 as a part of the raw material, and at least some of the filaments constituting the tow 10 are crimped in advance.

The above-mentioned crimping treatment may be carried out by any appropriate means, but for example, filaments that have not been crimped at all and filaments that have been crimped may be arranged in an appropriate ratio, or the tow may be crimped. When crimping is caused by rubbing, some filaments may come into strong contact with the knife and cause crimping, and some filaments may not come into contact with the knife at all.

In either method, it is sufficient if there are two or more types of filaments with different degrees of crimp, and the filament with the least degree of crimp becomes the first filament 3 and can be bent into a water droplet shape or annular shape. It is only necessary that the dog filament with the degree of shrinkage becomes the second filament 5, and a large number of small bends 6 are jumbled together to create a swollen state.

Therefore, both the first and second filaments may be crimped, or only the second filament may be crimped.

The tow 10 is bent into a droplet shape or an annular shape.

A device for bending the tow 10 is shown in FIG.

The tow 10 fed into the bending device 11 advances toward the tow 10 from both sides and is bent in a zigzag manner by the tip edge 13 of the bending member 12 and the pin 15 provided at the tip of the bending member 14.

The bending members 12 and 13 are arranged at equal pitches and move in the direction of the arrow.

Then, one bent end 16 of the toe 10 is connected to a heater 17.
The filaments located between the adjacent plate-shaped bending members 12 form a droplet-like loop and are joined together. The loop is pulled apart.

In the above process, the filaments of tow 10 are treated in a tensioned state until each loop is pulled apart, but when each loop is pulled apart, the tension is released and the latent crimp of the second filament is removed. is developed and becomes the foundation piece 18.

Next, the base pieces 18 that are locked to the pins 15 are collected by an appropriate means, and the base pieces 18 and the feathers 7 are stirred at an arbitrary ratio, so that the second filament 5 in the base piece 18 is crimped. The bends 6 developed by this are mixed and the expanded state is increased, and the feathers 7 are attached to the bends, and the entangled feathers 7 and the base piece 18 are integrated to form the filling material 1.

The example shown in Figure 2 shows the structure of the loop of the first filament made by the above method.The example shown in Figure 2A shows the structure of the loop of the first filament made by the above method. In the welded example shown in Figure 2B, the ends of the first filament are fused in opposite directions at the concentration point, and in the example shown in Figure 2C, the first filament is primarily The filaments are separated in three directions, and the example shown in the figure is one in which a plurality of first filaments are bent at random.

As described above, in the filling material of the present invention, the water droplets or the first filaments 3 bent in an annular shape are concentrated at one concentration point 4, and the large number of second filaments 5, which are bent and swollen in a jumbled manner, are concentrated at the concentration point 4. At point 4, since the first filament 3 is fixed integrally with the bent first filament 3, the first filament 3 has the elasticity to rebound against external pressure when pressure is applied from the outside. When used as a stuffing, the stuffing does not collapse due to the elasticity of the contacting loops, and the second filament 5 is in a swollen state with a large number of small bends 6 intermingled, making it possible to capture mixed feathers. It has excellent gripping power, the feathers and filaments are integrated, and the feathers do not stand on one side, and are effective in retaining air between fibers and in compression resistance, and can improve heat retention.

In addition, in the method of the present invention, in order to bend the filament bundle by parallel filament bending members and bath weld the filaments in contact with the ends of the filament bending members, the welding portion is used as a convergence point and all the ends are brought together. Not only can teardrop-shaped or annular base pieces concentrated at convergent points be produced continuously and highly efficiently, but also by changing the position of the opposing filament bending members and changing the degree of insertion of the filament bending members. The loop of the filament can be changed as appropriate, and the size of the filling can be changed as desired.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the filling material of the present invention, and FIG. 2A is a perspective view of the filling material of the present invention. B, C, and D are schematic diagrams illustrating the structure of only the first filament of the filling material of the present invention, FIG. 3 is a side view of the apparatus for carrying out the method of the present invention, and FIG. 4 is a perspective view of the bending member. . DESCRIPTION OF SYMBOLS 1...Filling member, 2...Water droplet-shaped or annular bent portion, 3...First filament, 4
...Concentration point, 5...Second filament, 6...Bend, 7...Feather, 10.
...Tow, 11...Bending device, 12゜1
4...Bending member, 13...Tip edge, 1
5...Pin, 16...Bent end, 17
...Heater 18...Foundation piece.

Claims (1)

[Claims] 1. Water droplet formation is a state in which a plurality of annularly bent first filaments are concentrated at one point, and furthermore, a number of bends made of crimped threads, which are smaller than the bends of the first filaments, are mixed and swollen. A plurality of second filaments forming a shape are integrally fixed to the first filament at the concentration point, and the feathers are entangled and attached to the first filament or the second filament. A filling material characterized by: 2. After performing a crimping process on some of the filaments of a filament bundle formed by converging multiple filaments so that many small bends with indeterminate direction are more strongly expressed than in the remaining filaments, all the filaments were converged. A loop is made and bent in that state, the loop is cut to an appropriate length, and at the same time each filament is welded at both cut ends, whereby the remaining filament is bent;
The feathers are entangled with the filament by mixing and stirring the feathers and the base piece, which is formed by the crimped filament, in which a large number of swollen small bends with indeterminate direction are concentrated and integrated at the welding point, and the feathers in an appropriate ratio. A method for producing a filling material by adhering the material.