JPS583062B2 - Dyed fiber yarn fixing treatment method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a treatment method for fixing a fiber yarn dyed with a water-soluble dye or an organic solvent dye by heating the dye to a high temperature.

The present invention has already been published in Japanese Patent Publication No. 51-626 regarding a method of using microwave energy for dye fixing treatment of dyed fiber yarns.
The method was disclosed in Publication No. 2 and has been experimentally implemented.

This method of using microwaves to fix dyes is
Compared to other methods (e.g., centrifugal dehydration method, vat method, etc.), this method has the advantage of being able to process with much less thermal energy consumption, and the present invention aims to further improve this method. An airtight container with a lid and a pressure regulating valve that accommodates the dyed fiber yarn is molded from a material that allows microwaves to pass through, such as synthetic resin or porcelain, and is placed within the range of microwave energy emitted from a microwave generator. This dyed fiber thread fixing treatment method is characterized in that the dyed fiber threads in the container are passed through the lidded closed container and heated at high temperature under high pressure.

Next, one embodiment of the present invention will be described with reference to the drawings.

The cylindrical airtight container 1 shown in FIGS. 1 and 2 is molded from a synthetic resin material through which microwaves can pass, and has protrusions 2, 2, etc. arranged at equal intervals on the inner peripheral surface of the upper opening edge. - is integrally formed and has a form strength that can withstand a predetermined internal pressure.

Reference numeral 3 denotes a cover plate that closes the opening, and on the lower surface of its periphery there are projecting pieces 4, 4, which engage with the projections 2, 2...
are formed at equal intervals.

5 is a sealing rubber ring provided at the close contact portion of the lid plate 3; 6;
indicates a porous plate-shaped inner cover provided on the inner surface of the cover plate 3.

The lid plate 3 is provided with a pressure regulating valve 7 that opens when the air pressure inside the sealed container 1 exceeds a certain value.

Reference numeral 8 indicates a manually operated valve provided on the cover plate 3.

The airtight container 1 accommodates cotton-like, thread-like, or cloth-like dyed fiber threads S, and is hermetically sealed with a lid plate 3.

Further, as shown in FIG. 3, a heating chamber 11 having an inlet 9 at one end and an outlet 10 at the other end is formed, and is made of a known magnetron oscillation tube with a frequency of 2400 to 250.
A microwave generator 12 with an output of several kilowatts that oscillates microwaves at 0 MHz is communicated with the heating chamber 11 via a waveguide 13.

Then, the sealed container 1 containing the dyed fiber yarn S is placed horizontally on the insertion table 15, and the sealed container 1 is moved from the inlet 9 to the outside of the inlet 9 by the operation of a piston 14 provided to repeatedly advance and retreat. It is made to enter into the heating chamber 11.

In this way, the closed containers 1 are successively advanced into the heating chamber 11 by the operation of the piston 14, and the dyed fiber threads S are heated by the microwave energy, and the dye molecules are melted and diffused into the molecules in the fibers to fix them. Facilitate.

The closed container 1 led out from the outlet 10 is left as it is for a certain period of time without opening the lid plate 3.

In this case, in order to uniformly radiate microwaves, a spiral guide groove (not shown) is formed on the inner peripheral surface of the heating chamber 11, and a protrusion that loosely fits into the guide groove is formed on the outer periphery of each closed container. It is also possible to form a closed container so that each time the closed container is pushed inside the heating chamber 11, it is accompanied by a rotational movement along the spiral.

In another embodiment shown in FIG. 4, a conveyor 16 consisting of an endless chain is laid in the heating chamber 11', and the closed container 1 is passed within the range of microwave energy emitted from the microwave generator 12'. This is how it was done.

As explained in the above embodiments, the method for fixing dyed fiber yarn according to the present invention involves storing the dyed fiber yarn in an airtight closed container with a lid through which microwaves can pass, and heating the dyed fiber yarn with microwave energy. Because of this, the dyed fiber yarn is heated evenly from deep within the container, and the pressure inside the container increases to over 1 atm due to this heating, making it possible to heat the container to a high temperature of over 100°C. Completely different from the heating method, this method has the advantage of completely eliminating fixing groups, and since the fixing process is carried out rapidly and has an extremely high processing capacity, it consumes less thermal energy and can greatly contribute to reducing processing costs. .

In addition, since the heating temperature of 100°C or higher can be appropriately adjusted using the pressure regulating valve, it is possible to achieve homogenization of the product, and
After irradiating dyed fiber yarn with microwave energy in a sealed container, if the container is left sealed for a certain period of time, sufficient heat retention can be achieved and the dyeing time can be extended, resulting in high processing capacity even with small equipment. It has the beneficial effects of

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a longitudinal section of a closed container with a lid, Fig. 2 is a sectional view taken along the line X-X, and Fig. 3 is a longitudinal section of a sealed container with a lid.
The figure is a longitudinal sectional view of the processing apparatus, and FIG. 4 is a longitudinal sectional view showing another embodiment of the processing apparatus. S... Dyed fiber yarn, 1... Airtight container,
3... Lid plate, 7... Pressure regulating valve, 11
... Heating chamber, 12 ... Microwave generator.

Claims (1)

[Claims] 1. A sealed container with an airtight lid for a pressure regulating valve that accommodates the dyed fiber yarn is molded from a microwave-transmissible material such as synthetic resin or porcelain, and the lid is placed within the range of the microwave energy emitted from the microwave generator. 1. A method for fixing dyed fiber yarn, which comprises passing through a sealed container and heating the dyed fiber yarn in the container at high temperature under high pressure.