JPS61296127A - Spinning of raw cotton having sticking adhesive material - Google Patents

Abstract

PURPOSE:To prevent the occurrence of fly waste, dust and static electricity and promote improvement in environment in spinning, productivity and product quality, by applying an additive having bundling effect and antistatic effect to raw cotton having a sticking adhesive material and spinning the resultant raw cotton under specific conditions. CONSTITUTION:An additive having bundling effect and/or antistatic effect, e.g. lauryl phosphate potassium salt, is first applied to raw cotton having a sticking adhesive material to give preferably 0.2-1wt%, based on the cotton weight, solid of the additive. The resultant raw cotton is then spun under conditions of 18-30 deg.C temperature and 35-50 relative humidity. The temperature and humidity conditions are preferably adjusted in carding and drawing processes.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a method for spinning cotton raw cotton, which has sticky substances and has poor spinnability, with good continuous spinning.

(Existence) Conventional technology Cotton has the characteristics of good texture, moisture absorption, and good dyeability, and has traditionally been used most often in clothing among natural fibers. A large amount of cotton is cultivated in the country.However, some of these cotton (hereinafter referred to as raw cotton) are contaminated with the secretions of certain insects during the cultivation process.
It is known that a sticky substance called honeydew, which contains a lot of sugar, adheres to textiles and causes various problems such as roller wrapping during the spinning process. Raw cotton adhering to such sticky substances (
Hereinafter referred to as sticky raw cotton. ) For the causes of stickiness and countermeasures, please refer to “Textile Technology News” No. 5, edited by Japan Textile and Textile Association.
It is discussed in detail in No. 21 (published September 1980), pages 1 to 6, ``A Study on the Adhesiveness of Cotton Flowers.'' Currently, when spinning these sticky raw cottons, the following two methods are the main measures actually taken.

■ Spinning with relative humidity reduced to 55% or less.

■Mix appropriate amount in non-stick raw cotton and spin.

However, while spinning with the humidity lowered to 55% or less in relation to item (2) above is effective in reducing the stickiness of honeydew, which is a sticky substance, on the other hand, it may result in the generation of fluff and dust during spinning. Severe increase in thread breakage.

This leads to a deterioration of the working environment, and also tends to cause various problems such as fiber wrapping around the roller, adhesion to the frame, and poor coiling due to the generation of static electricity. Also, mixing raw cotton with non-adhesive cotton is not an essential solution, and sticky substances will accumulate in various parts of the machine during long-term spinning.

(c) Problems to be Solved by the Invention The present invention solves various problems such as winding on rollers caused by generation of fluff and dust and generation of static electricity when spinning sticky raw cotton at the low humidity mentioned in (3) above. The aim is to provide a spinning method that can solve the problem.

(2°) Means and action for solving the problem In the present invention, after adding an additive having at least one of a focusing effect and an antistatic effect to sticky substance-adhered raw cotton,
This is a method for spinning sticky substance-adhered raw cotton, which is characterized by spinning under conditions of ~30°C and relative humidity of 35-50%.

That is, in the present invention, when spinning sticky raw cotton, the spinning atmosphere is made to have low humidity in order to reduce the stickiness of the sticky substance adhering to the sticky raw cotton, and by reducing the humidity, In order to prevent the generation of static electricity, dust, and static electricity, an additive having either a focusing effect or an antistatic effect, or both effects is applied in advance to the raw cotton. After that, the temperature is 18-30℃ and the relative humidity is 35℃.
The spinning is performed under conditions of ~50%.

In the present invention, by setting the atmospheric conditions for spinning sticky raw cotton to a temperature of 18 to 30°C and a relative humidity of 35 to 50% as described above, the stickiness of the sticky material honeydew can be reduced, and the honeydew Problems such as fiber wrapping around rollers due to stickiness are significantly reduced. Furthermore, by adding an additive that has at least one of a focusing effect or an antistatic effect to the adhesive raw cotton in advance, it is possible to reduce the amount of fluff, dust, and static electricity generated under low humidity conditions of 35 to 50%. It is possible to prevent problems such as wrapping around the roller.

Nonionic surfactants are additives that have a binding effect and can suppress the generation of fluff and dust by increasing the binding of fibers during spinning under low humidity conditions. Among the alkyl ethers of ethylene (POE), for example, (POE)5 lauryl ether, (POE)
>s cetyl ether or among the esters of polyethylene glycol (PEG), such as Pl! G20
There are 0 laurates, etc. Also, additives that have a so-called antistatic effect, which prevents the generation of static electricity by keeping electrical resistance low during spinning under low humidity conditions of 50% or less, include alkyl phosphates, such as lauryl. There are salts of phosphate, salts of acetyl phosphate, and among sulfates, for example, (POE)sstearyl sulfate Na salt. The one or more additives that exhibit at least one of the focusing effect and the antistatic effect are preferably applied as an aqueous solution or a volatile solvent solution to the raw cotton using a spray method. The solid content may be added in an amount of 0.2 to 1% by weight based on the weight of the fibers.

As mentioned above, the atmospheric conditions during spinning need to be such that the temperature ranges from 18 to 30°C due to seasonal fluctuations and the relative humidity ranges from 35 to 50%. The relative humidity is 35
%, even if the additive is added, the generation of static electricity cannot be suppressed, and roller wrapping cannot be sufficiently prevented. Furthermore, if the relative humidity exceeds 50%, the adhesive substance will become sticky, resulting in increased adhesion to the rollers, making spinning difficult. Although the temperature and humidity adjustment described above may be applied in any process from batting to spinning, it is particularly preferable to apply it in the carding and filament processes. Of course, the temperature and humidity may be adjusted in all steps.

(E) Examples Example 1゜ An aqueous solution of an additive consisting of a mixture of (POE) 5 lauryl ether, lauryl phosphate, and salt in a weight ratio of 3:1 was added to the sticky substance-adhered raw cotton in a cotton mixing machine. , after adding 0.4% solid content to the fiber weight by spraying,
A lamp was formed using conventional methods.

As a comparative example, the same raw cotton adhering to the adhesive substance used in the above example was made into a wrap in the same manner without adding any additives.

The above two types of wrap were applied at a temperature of 23℃ and relative humidity of 45%.
When the raw cotton was passed through the carding process and the filament process in an atmosphere adjusted to In the process, the spun web adheres to the cover plate,
A part of the web appeared to be peeled off, and in the filament process, a phenomenon of winding of the fibers around the calender roller was observed, and the obtained sliver had fuzz. On the other hand, in the case of the raw cotton to which the additives of the examples of the present invention were added, the above-mentioned problems did not occur at all, and a sliver with excellent properties was obtained.

Example 2゜Example 1. The raw cotton used was 100% raw cotton with adhesive substances attached, which was produced in a different place, and the raw cotton had a fineness of 60%.

(POE) 5 cetyl ether and (P
OE)3 Weight ratio of stearyl sulfate Na salt to 4
Lamps (A) and (B) were formed by a conventional method by spraying an aqueous solution of an additive consisting of a mixture of:

As a comparative example, 100 pieces of raw cotton adhering to the sticky substance of the above example were used.
%, and mixed raw cotton with 60% raw cotton adhering to the adhesive substance and 40% raw cotton without tackiness, as well as viscosity Table 1 (Note) Visual judgment was performed in the following five stages.

5: Each phenomenon was severely observed.

4:　〃〃It was highly recognized.

3: Sometimes recognized.

2: Rarely observed.

1: Not recognized at all.

Lamps (C), (D), and (E) were formed in the same manner using a mixed raw cotton consisting of 30% raw cotton adhering to adhesive substances and 70% raw cotton without tackiness, without adding any additives.

These five types of lamps were used at a temperature of 28℃ and relative humidity of 40%.
It was passed through a carding process and a striation process under an atmosphere adjusted to . Table 1 shows the results of visual judgment regarding the disturbance of the web during the carding process, the fluffing of the filamentous sliver, and the adhesion of sticky substances to the roller in that case.

As is clear from the results shown in Table 1, the lamps (A) and (B) to which the additives of the examples of the present invention were applied are the lamps (C) to which no additives were applied as the comparative example.

Compared to (D) and (E), the disturbance of the web during the carding process and the fluffing of the filamentous sliver were significantly reduced.

(f) Effects of the Invention The present invention provides raw cotton having the above-described structure, which contains at least a portion of sticky raw cotton to which a sticky substance is attached, which is conventionally difficult or impossible to spin. By adding a small amount of additives to the raw cotton and performing the spinning at a low relative humidity of 35 to 50%, there is no generation of fluff, dust, or static electricity, and this reduces the amount of sticky substance-adhered raw cotton. It greatly contributes to quality and productivity by improving the environment during spinning and preventing roller wrapping.

Patent distributor: Japan Cotton Industry Foundation Institute of Technology and Economics

Claims (1)

[Claims] (1) After adding an additive having at least one of a focusing effect and an antistatic effect to the sticky substance-adhered raw cotton, the material is spun under conditions of a temperature of 18 to 30°C and a relative humidity of 35 to 50%. A method for spinning raw cotton coated with a sticky substance.