Method for testing internal moisture of high-frequency baked glass fiber yarns

A technology of glass fiber yarn and testing method, which is applied in the direction of removing certain component weighing, measuring devices, and analyzing materials to achieve the effects of less hairiness, improved product quality and output, and fast baking speed

Active Publication Date: 2017-05-31
JUSHI GRP JIUJIANG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen from the sampling method that this standard can only test the moisture content of a certain length of yarn in the yarn cluster, that is, the moisture content detection of the conventional yarn cluster, and is not suitable for the moisture content detection of the blind spot area inside the yarn cluster under the high-frequency drying process

Method used

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  • Method for testing internal moisture of high-frequency baked glass fiber yarns
  • Method for testing internal moisture of high-frequency baked glass fiber yarns
  • Method for testing internal moisture of high-frequency baked glass fiber yarns

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Test sample: glass fiber direct roving;

[0026] Test conditions: temperature 23°C, humidity 60%.

[0027] The test method steps are:

[0028] (1) Select the yarn ball to be sampled: select a good-looking glass fiber yarn ball at the exit of the high-frequency oven, and use a signature pen to mark the end face of the yarn ball in contact with the yarn support plate. The shape of the mark is the same as the yarn ball For the straight lines whose diameters are basically coincident, pack the yarn balls with heat shrink bags and take them off from the creel, and send them to the winding area to adjust the temperature.

[0029] (2) Removal of yarn from the outer ring of the yarn ball to be sampled: place the yarn ball adjusted to room temperature on the creel, remove the heat shrinkable bag, and mark the end surface 1cm away from the outer ring of the yarn ball with a signature pen. Begin to remove the outer ring yarn with the winder until the 1cm mark on the end face.

...

Embodiment 2

[0037] Test sample: glass fiber direct roving;

[0038] Test conditions: temperature 25°C, humidity 60%.

[0039] The test method steps are:

[0040] (1) Select the yarn ball to be sampled: select a good-looking glass fiber yarn ball at the exit of the high-frequency oven, and use a signature pen to mark the end face of the yarn ball in contact with the yarn support plate. The shape of the mark is the same as the yarn ball For the straight lines whose diameters are basically coincident, pack the yarn balls with heat shrink bags and take them off from the creel, and send them to the winding area to adjust the temperature.

[0041] (2) Removal of yarn from the outer ring of the yarn ball to be sampled: place the yarn ball adjusted to room temperature on the creel, remove the heat shrinkable bag, and mark the end surface 1cm away from the outer ring of the yarn ball with a signature pen. Begin to remove the outer ring yarn with the winder until the 1cm mark on the end face.

...

Embodiment 3

[0049] Test sample: glass fiber direct roving;

[0050] Test conditions: temperature 25°C, humidity 70%.

[0051] The test method steps are:

[0052] (1) Select the yarn ball to be sampled: select a good-looking glass fiber yarn ball at the exit of the high-frequency oven, and use a signature pen to mark the end face of the yarn ball in contact with the yarn support plate. The shape of the mark is the same as the yarn ball For the straight lines whose diameters are basically coincident, pack the yarn balls with heat shrink bags and take them off from the creel, and send them to the winding area to adjust the temperature.

[0053] (2) Removal of yarn from the outer ring of the yarn ball to be sampled: place the yarn ball adjusted to room temperature on the creel, remove the heat shrinkable bag, and mark the end surface 1cm away from the outer ring of the yarn ball with a signature pen. Begin to remove the outer ring yarn with the winder until the 1cm mark on the end face.

...

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Abstract

The invention discloses a method for testing internal moisture of high-frequency baked glass fiber yarns. The testing method is implemented in an environment under the temperature of 20-26 DEG C and the humidity of 55-75%, and comprises the following steps: (1) selecting to-be-sampled yarns; (2) removing outer ring yarns of the to-be-sampled yarns; (3) determining sample removing positions; (4) removing test samples; (5) testing the moisture content; and (6) performing data analysis. The needed tools and equipment comprise a yarn cutter, a stainless rule, a signing-pen, a sealing bag, an electronic scale (accurate to 0.1mg), a drying oven, a sample dish and a dryer. According to the method, the internal moisture content of the high-frequency baked yarns can be timely measured, the quality problem caused by incomplete baking is effectively solved, the popularization and application of a high-frequency drying oven can be facilitated, the advantages of a high-frequency baking process, such as small product hairiness quantity, high baking speed and the like can be fully exerted, and the product quality and yield can be effectively improved.

Description

technical field [0001] The invention relates to a method for testing the moisture inside a high-frequency baked glass fiber yarn cluster. Background technique [0002] The market demand for glass fiber direct roving is increasing day by day, and customers have higher and higher requirements for product quality. Whether the drying process is good or not plays a vital role in the quality of glass fiber products. High-frequency oven has gradually become the drying equipment for some high-end glass fiber products due to its advantages of fast baking speed and less hairiness. However, due to its own characteristics, high frequency also has certain blind spots in baking, and it is prone to the phenomenon that the inside of the yarn ball is not completely dried. In order to avoid the quality problem that the moisture content exceeds the standard, it is necessary to measure the moisture content inside the glass fiber yarn group baked in a high-frequency oven. [0003] The content ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/04
CPCG01N5/045
Inventor 韩林魏亚杰万维维王特
Owner JUSHI GRP JIUJIANG
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