JPS5845481B2 - Seniseizouhou - Google Patents

Description

[Detailed description of the invention] The present invention relates to a novel method for producing fibers.

More specifically, the present invention relates to a method for continuously producing a plurality of fibers from one nozzle hole using an extruder after mixing a synthetic resin having fiber-forming ability and a higher fatty acid metal salt.

Traditionally, fiber manufacturing methods include melt spinning, dry spinning, and wet spinning, but in all of these methods, the nozzle hole has a large number of pores with a diameter of 1 mm or less, and one A method of spinning fibers is adopted.

The present inventors have continuously produced a mixture of a synthetic resin that can be molded using a single-screw extruder and a higher fatty acid metal salt of 20 to 300% by weight based on the synthetic resin, and from a single thick nozzle hole. The present invention was achieved by discovering a new fact that several hundred to several thousand water fibers can be obtained.

That is, in the present invention, a synthetic resin having a fiber-forming ability and a higher fatty acid metal salt in an amount of 20 to 300% by weight based on the synthetic resin are thoroughly mixed, and the mixture is heated and melted using a screw extruder and passed through one nozzle hole in several numbers. This is a method of continuously producing bundles of 100 to several thousand water fibers.

The higher fatty acid metal salts used in the present invention include saturated fatty acids such as capric acid and stearic acid, and unsaturated fatty acids such as oleic acid, linoleic acid, and lylunic acid. It is in the form of salt.

Examples of metals combined as salts include zinc, aluminum, calcium, silver, copper, lithium, thallium, nickel, barium, magnesium, lead, and iron.

However, it is not limited to these.

As the synthetic resin used in the present invention, a wide variety of resins having fiber-forming ability can be used.

Examples include polyamide synthetic resins such as nylon 66 and nylon 6, polyester synthetic resins, polyolefin synthetic resins, polyvinyl chloride synthetic resins, polyvinylidene chloride synthetic resins, and polystyrene synthetic resins.

However, it is not limited to this.

It is also possible to use a combination of one or more of these higher fatty acid metal salts and one or more of the synthetic resins.

The amount of higher fatty acid metal salt used is 20 to 3 per synthetic resin.
It is appropriate to use 00% by weight, preferably 50 to 150% by weight.

If it is less than 20% by weight, it will be difficult to obtain a large number of fibers at once, and if it is more than 300% by weight, it will be difficult to extrude the resin through the nozzle hole.

The heating temperature range of the resin varies depending on the softening point or melting point of the synthetic resin and higher fatty acid metal salt, but is 100 to 30
Good results can be obtained by extruding while heating at 0°C, preferably in the range of 130-250'C.

The mechanism by which a large number of fibers can be continuously obtained from one thick nozzle hole according to the present invention is considered as follows.

That is, a mixture of synthetic resin and higher fatty acid metal salt is continuously supplied to a screw extruder, heated and melted, and transferred to a die section.

Here, the shape of the die is tapered, and furthermore, there is a parallel portion, that is, a land at the nozzle hole.

It is only after entering this land that the molten resin is made into fibers, and the molten resin is coated with a multi-layered layer of molten higher fatty acid metal salt, and the movement speed of this material is accelerated in the land area.
The resin is made into fibers, and the surface of the fiberized resin is coated with a multilayered layer of molten higher fatty acid metal salts, so that a large number of fibers can be obtained from one nozzle hole in a separate state without being fused. considered to be a thing.

The present invention will be explained below with reference to Examples.

Example 1 200g of calcium stearate and 300g of polystyrene
g were thoroughly mixed at room temperature using a Henschel mixer.

The mixture was supplied to a 401rL 1ft screw extruder and extruded while heating at 220°C to form fibers.

The diameter of the nozzle hole was 4 mm. The bundle-shaped fibers obtained from the large number of fibers thus obtained were rod-shaped.

When the calcium stearate of the fiber bundle was removed by dissolving it in hot water, a polystyrene fiber bundle was obtained.

The average thickness of these fibers is 3μ, and the fiber bundle is approximately 1.10μ.
I was warned not to use 0 polystyrene fibers.

There was no fusion between the fibers in this bundle of fibers.

Example 2 400 g of sodium stearate and 300 g of polyethylene terephthalate were thoroughly mixed at room temperature using a Henschel mixer.

The mixture was fed into a 40 screw extruder and
Extrusion was performed while heating at C to form fibers.

The diameter of the nozzle hole was 21 nm.

The bundle-shaped fibers obtained from the large number of fibers thus obtained were rod-shaped.

800 sticks containing the bundled sodium stearate
Polyethylene terephthalate fibers were obtained by dissolving and removing the sodium stearate in warm water of 0.0 °C.

The fibers had an average thickness of 2 μm, and the fiber bundle consisted of about 800 polyethylene terephthalate fibers.

There was no fusion between the fibers in this bundle of fibers.

As can be seen from the above examples, a synthetic resin having fiber-forming ability and a higher fatty acid metal salt are mixed, heated and melted using a screw extruder, and extruded from one nozzle hole to form a large number of fibers. The results showed that it was possible to continuously produce bundle-like fibers.

According to the present invention, fiber bundles made of a large number of fibers can be easily manufactured industrially by simply using a device consisting of a mixer and a screw extruder.

Claims (1)

[Claims] 1) A fiber manufacturing method in which one fiber is continuously produced from a mixture of a synthetic resin having fiber-forming ability and a higher fatty acid metal salt in an amount of 20 to 300% by weight based on the synthetic resin through a nozzle hole using an extruder. .