Method and apparatus of producing fibrous aggregate

Abstract

The present invention discloses a method for manufacturing a fiber aggregate, comprising: a supplying and jetting step of supplying the spinning stock solution from the spinning stock solution storage part to the spinning stock solution ejection part through a supply pipe, and spraying the spinning stock solution from the spinning stock solution ejection part ; Fiber gathering process, the above-mentioned spinning dope that is sprayed out acts on an electric field to make it stretch and fiberize, and the fibers obtained are directly gathered on the collection surface of the collector, and the above-mentioned collection surface is moved in a certain direction while forming A fiber aggregate; it is characterized in that: the above-mentioned spinning dope ejection part is carried on a support body that can move around a circular orbit between a pair of rotating shafts, and the direction of motion in the linear motion region of the above-mentioned circular orbit is the same as that of the above-mentioned The spinning dope is jetted from the spinning dope jetting section while the above-mentioned support body is looped at a constant speed in a state where the width direction of the collecting surface is aligned.

Description

technical field [0001] The present invention relates to a method for manufacturing a fiber aggregate and a device for manufacturing the fiber aggregate. Background technique [0002] Because when the diameter of the fiber constituting the fiber aggregate is small, it has various properties such as good separation performance, liquid retention performance, wiping performance, concealment performance, insulation performance or softness, so it is preferable to make the fibers constituting the fiber aggregate smaller in diameter. As a method for producing a fiber aggregate composed of such fibers having a small fiber diameter, a so-called electrospinning method is known: a spinning dope is jetted from a nozzle, and the jetted spinning dope is extended by an electric field, After becoming a fiber with a small fiber diameter, it is directly collected into a fiber aggregate. [0003] When a fiber aggregate is produced by such an electrospinning method, the number of nozzles is on...

AI Technical Summary

Problems solved by technology

If the width of the collector is increased in order to increase productivity, but the moving speed of the nozzle is not increased, a region with a large amount of fibers and a region with a small amount of fiber will be formed in the length direction of the fiber aggregate, so it is necessary to increase the moving speed of the nozzle , but the faster the moving speed, the larger the region that needs to be accelerated and decelerated in proportion to it, so the result will promote the dispersion of the fiber amount in the width direction of the fiber aggregate

[0011] In addition, in the disk-shaped rotary jetting device (Patent Document 2), only a fiber aggregate with a small amount of fibers at the center and a large amount of fibers at both ends in the width direction can be obtained.

[0012] Furthermore, in the case of a device with a reversibly rotatable collector (Patent Document 3), in order to reversely rotate the aggregate, there must be periods of high rotation speed and periods of slow rotation, so the fiber arrangement direction is discrete, and only Mechanical strength creates discrete fiber assemblies

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