RU2324774C1 - Method of determining separability of fibre in layer of linen stock - Google Patents

Abstract

FIELD: textiles, paper.

SUBSTANCE: method includes illumination of the surface of the test material, measuring parameters of light reflected by the surface, and evaluation of separability. Three standard coordinates X, Y, and Z are the light parameters used. Each of these coordinates is an average value of the test results on the apical, middle and root of the stem parts. Separability of the fibre is determined using the formula: O=a+b·X+c·Y+d·Z, where O is the fibre separabilty; X, Y, Z are average values of the coordinates of colour; a, b, c, d are empirical coefficients. The given invention provides for increased accuracy and objectivity when determining separability of fibre in shale stock.

EFFECT: increased accuracy when determining separability of fibre in the shale stck.

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Description

The invention relates to the field of standardization and determination of the quality of flaxseed raw materials and can be used to determine the separability of the fiber in the linen foliage trust.

Existing methods for determining the separability of fiber in a linen shawl trust are to measure the reflected light flux and then calculate the quality indicator of the trust. However, when using these methods for determining the separability of the fiber in a linen shrub trust, the objectivity and accuracy of the assessment are insufficient.

A known method for determining the separability of fiber in a shale linen trust, including sampling raw materials, machining the trusts on hand tools and calculating separability of the fiber [1].

The disadvantages of this method is the low objectivity and accuracy of determining the separability of the fiber.

There is also a method of determining the separability of the fiber in the shale linen trust, as a parameter of the quality of the material, including lighting the surface of the test material, measuring the parameters of the light reflected from it and evaluating separability [2].

This known method in its technical essence is closest to the claimed and therefore is proposed as a prototype.

The disadvantages of this method is that when determining the separability of the fiber, the intensity of the reflected light is measured, that is, the degree of darkening and the reflectivity of the stems of the flax are evaluated. However, the degree of readiness of the trusts is characterized by the color of the stems. Thus, this method does not make it possible to distinguish the color of the stems, on which the separability of the fiber depends.

An object of the invention is to increase the accuracy and objectivity in determining the separability of the fiber in the linen foliage trust.

The stated technical problem is achieved by the fact that in the specified method for determining the separability of the fiber in the shale linen trust, which includes lighting the surface of the test material, measuring the parameters of the light reflected from it and evaluating the separability, according to the invention, three standard color coordinates X, Y are used as light parameters , Z, each of which is the average value from the test results in the apical, middle and butt parts of the stems, and the separability of the fiber is determined by the formula

O = a + b · X + c · Y + d · Z,

where O is the separability of the fiber; X, Y, Z - average color coordinates; a, b, c, d are empirical coefficients.

The basis of this method is the dependence of the color of the stems of the trust on the degree of its aging [3]. The color of the stems is estimated by decomposing the reflected linen trust light into three components: red, green and blue. Determining the separability of the fiber depending on the three standard color coordinates X, Y, Z will improve the accuracy of the assessment. This is because the color coordinates allow us to estimate the color of the stems, and not the intensity of the reflected light flux, which carries information only about the degree of darkening and reflectivity of the stems of flax.

The determination of color components in calculating the separability of the fiber will eliminate the subjectivity of the assessment and increase the level of accuracy of the analysis results. In addition, the use of average values of color coordinates X, Y, Z defined in the vertex, middle and butt parts of the stems will also lead to an increase in the objectivity of the analysis results.

The method for determining the indicator of fiber separability is implemented as follows.

They carry out the selection of 10 handfuls weighing 50 g each according to the method GOST 24383-89 “Flaxseed trust. Requirements for blanks "[1]. Selected to determine separability, all handfuls weighing 50 g are combined in one sample. The resulting sample of stems is laid out on a flat horizontal surface with a uniform dense layer, at least 20 cm wide, avoiding gaps. The measurement is carried out in three zones along the length of the stems in a handful. The first measurement is carried out in the middle of a handful, the second, in the apical part of a handful at a distance of 20 cm from its middle, the third, in the butt part of a handful at a distance of 20 cm from its middle. With a handful length of flax trusts from 50 to 65 cm, the second and third measurements are carried out at a distance of 15 cm from the middle of a handful, and with a handful length from 41 to 50 cm, the second and third measurements are carried out at a distance of 10 cm from the middle of a handful.

The arithmetic average of the color coordinates of X, Y, Z is calculated from the test results in the vertex, middle and butt parts of the stems. The arithmetic average is calculated to the fourth decimal place, followed by rounding the result to the third decimal place.

The results of the determination are summarized in table.

Color components Handful zones Average value Vertex Mid Comel X 0.362 0.362 0.359 0.361 Y 0.341 0.340 0.342 0.341 Z 0.297 0.298 0.299 0.298

Depending on the obtained values of the average color coordinates, the fiber separability is determined by the formula

O = a + b · X + c · Y + d · Z,

where O is the separability of the fiber; X, Y, Z - average color coordinates; a, b, c, d - empirical coefficients equal respectively to 5.351888; -0.01449; 0.001677; -0.00413.

Thus, the separability of the fiber is equal to 5.346. After rounding 5.3.

Using the proposed method can improve the accuracy and objectivity of assessing the degree of readiness of the linen trusts and reduce the time spent on the determination.

Information sources

1. GOST 24383-89 “Flax trust. Requirements for blanks. " - M .: Publishing house of standards, 1990, 17 p.

2. Pashin E.L., Zhuplatova L.M., Prima L.I., Shamin V.B. A method for determining the quality of the material, namely flax trusts. // A.S. Ukraine SU 1170978, G01 No. 21/89. - Publ. 08/15/2000, Bull. Number 3.

3. Markov VV, Suslov NN, Trifonov VG, Ipatov AM Primary treatment of bast fibers. Textbook for university students of the textile industry. - M.: Light Industry, 1974.

Claims (1)

A method for determining the separability of fiber in a stanled linen trust, including illuminating the surface of the test material, measuring the parameters of light reflected from it, and evaluating separability, characterized in that three standard color coordinates X, Y, Z are used as light parameters, each of which is the average value from the test results in the apical, middle and butt parts of the stems, and the separability of the fiber is determined by the formula O = a + b · X + c · Y + d · Z, where O is the separability of the fiber; X, Y, Z - average color coordinates; a, b, c, d are empirical coefficients.