What is a Pick Glass?
A Pick Glass, also known as a Linen Tester or Thread Counter, is a tool used in the textile industry to look at the structure of fabric. It is a foldable magnifier that sits on a flat surface, giving a clear view of a specific area of cloth.
How it works
Why is pick counting important in textile testing?
It is like a DNA test for cloth as it determines how the fabric feels and how long it will last. The pick glass helps to check the fabric is quality.
1. Verification of Thread Count
- Thread count is a measure of consumer textiles, like bedding and high-end shirts.
- Contractual Compliance: Hotels use textile pick glass to check if manufacturers deliver the thread density.
2. Controlling Fabric Weight and Cost
- The number of picks per inch affects the amount of material used.
- Production Consistency: If a loom is set incorrectly, it wastes yarn.
- GSM Accuracy: Pick count helps ensure the fabric is not too heavy or too light.
3. Predicting Structural Stability
- The density of the weave affects how the fabric holds its shape.
- Shrinkage Control: Fabrics with pick counts have more space between threads, leading to high shrinkage.
- Seam Slippage: Woven fabrics can cause seam slippage.
4. Impact on Performance and "Hand."
Pick counting helps engineers tune the fabric is characteristics:
- Opacity: A higher pick count makes a fabric less see-through.
- Breathability: Some fabrics require a precise lower pick count for air or fluid to pass through.
Where is a pick glass used?
Here are the primary places you will find a pick glass in use:
1. Textile Manufacturing and Quality Control
- On the Loom: Weavers use it to check the pick count to ensure the machine is calibrated correctly.
- In the Lab: Technicians use it to identify weave structures. They can distinguish a twill from a satin weave.
- Garment Inspection: Inspectors use the textile testing pick glass to look for spots in yarn, broken threads, or unintentional stripes.
2. The Printing and Graphic Arts Industry
Printers use pick glasses to inspect ink on paper.
- Color Registration: They check if the four primary printing colors are perfectly aligned. If the dots are slightly off, the image looks blurry.
- Half-Tone Inspection: They examine the shape and density of dots.
- Ink Coverage: To ensure there are no areas where the ink did not properly adhere.
3. Jewelry and Watchmaking
A pick glass allows for handwork with small tools.
- Watch Repair: Horologists use them to inspect gears and hairsprings for dust or damage.
- Gemstone Inspection: Jewelers use a pick and glass to view a stone is table while it sits on a velvet pad.
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Q : Is it a pick glass for laboratory testing?
A : A pick glass is a tool in textile laboratories, but its suitability depends on the level of precision required. In a lab, a textile quality control pick glass is a manual verification tool.
Q : Can a pick glass be used for fabric types?
A : Yes, a pick glass is highly versatile. Can be used for almost any fabric type. The technique changes depending on whether the fabric is woven or knitted. It is not just for counting thread count in cotton sheets. It is also important for synthetic materials. A pick glass is a tool for many types of fabrics.
