Technology Allows Mills to ‘Take out the Trash’
February 23, 2012 
There is a reason it’s called trash. Non-lint materials not only affect cotton quality, they can shorten the life of expensive processing machinery. High-volume testers can only measure trash on the surface optically, which doesn’t tell the whole story.
Standalone gravimetric trash measurement instruments are often compromised by human errors and are not easily integrated to high-volume cotton testers.
Fortunately, fully automated gravimetric trash measuring equipment can separate trash from lint in only one pass. Once the trash is removed, the amount of trash can be weighed and reported to the user.
Gravimetric trash results have many useful applications, including:
• Assessing and optimizing the ginning process.
• Serving as a cotton grading tool for spinners.
• Yarn realization for spinners.
• Monitoring and optimizing the cleaning efficiency in the blow room.
• Optimizing the trash and neps in the blow room process.
High-end models analyze the trash content in cotton by measuring the physical weight of trash particles. Higher-end gravimetric testers require only a single pass of a cotton sample to separate the lint and trash particles. And, being fully automated, they avoid operational and human errors.
Utilizing the height of technology enables users to acquire comprehensive information about all of the cotton’s fiber properties and can help spinners fine-tune their process settings to achieve maximum value from their raw materials.
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