What is Non-Contact Portable Spectrometer?

by Engr. Kh. Mashiur Rahman | Apr 20, 2019 | LAB

Portable Spectrometer

The specifications of portable spectrometer are as under:

• Geometry:
• Illumination:
• Spectral Engine: Spectral Range: Spectral Interval: Measurement Range:
• Calibration Interval:
• Measurement Spot Size: Measurement Distance:
• Repeatability: Inter-instrument
• Agreement:
• Gloss Geometry: Gloss Repeatability: Gloss Reproducibility: Operating Temp: Humidity:
• 45/0° dual illumination
• Full spectrum LED
• True Dual beam, 31 channel 400 – 700 nm
• 10 nm measured, 10 nm output 0-150% reflectance
• Once per week or temperature shift > 14° C (25.2° F) (self detected)
• 6 mm (1/4″) and 12 mm (1/2″)
• 38 mm (1 1/2″) nominal lens to measurement surface
• 6 mm 0.035 Mat) Maximum 12 mm 0.025 AEab Maximum (white ceramic tile)
• 6 mm 0.15 avg AEab (12 BCRA tiles) 12 mm 0.15 avg aEab (12BCRA tiles)
• 45/0°, 60° Correlated
• 0-10 GU, +/- 0.2 GU, 10-100 GU, +/- 0.6 GU 5-92 GU, 3.0 GU maximum, 1.5 GU average 10° – 40°C (50° – 104°F)
• 0-85% relative non-condensing

Other Term

In a counterflow washing process, fresh water is introduced only at the exit wash unit and counterflows back toward the dirtier units. This process increases water consumption at each separate washing stage, but the overall water consumption is reduced considerably.
In textile dyeing and printing, counterflow washing is applied because most of the water consumption is related to the washing of the materials. Besides, counterflow washing provides a more efficient cleaner wash. Since 1985, the use of counterflow washing machines has resulted in a decrease of water consumption and a corresponding reduction in the volume of the wastewater. Many textile companies have adopted the counterflow washing process. The further development of these washing machines has resulted in the optimisation of the washing process leading to a further reduction of the water consumption.
With the implementation of the counterflow washing process, a water savings of 75% can be achieved.

Conclusion

Portable spectrometer – Counterflow washing can be applied to all washing processes in the textile industry, with the exception of washing processes that take place in yarns painting equipment, flake painting equipment and reel barrels. Converting a conventional washing process to a counterflow washing process has a payback period of several years.

What is Color Spectrophotometer?

by Engr. Kh. Mashiur Rahman | Apr 15, 2019 | LAB

Most defects arising in the production process of textiles and apparels are detected by inspectors. In order to promote consistent inspection decision from factory inspector, we recommend our factory to provide adequate inspector training in recognizing fabric and apparel defects and cause.

Under the new concept of Auto  Sportswear Quality Assurance program and partnership with our factories, Definition and Classification of Defects are developed and established as follows: Read more about Non-Contact Portable Spectrometer

Defect Definition:

Critical Defects:  A defect that fails to meet mandatory regulations and/ or affects the safety of the consumer.  Results in automatic rejection of inspection.

Major Defects: Any defect severe enough that it would result in customer dissatisfaction, or generally classify the garment as a second, or of less quality.

Minor Defects: An imperfection that may or may not cause a second, depending upon it’s location in the finished garment.

Apparel Defect Classification

A simplified list of defects, explanation and the judgments are used in classifying apparel defects found in final inspection.

Fabric defects Classification

A fundamental list of defects, explanation and the judgments are used in classifying both woven and knit fabric defects.

Factory Quality Control Manager should offer continuous inspection training with showing written standards, using sample fabric standards / defective garment samples and photograph.

*Note “Sewing Defect Manual” and “Seam Puckering Technical Bulletin” are property of American & Efird Inc.