How do you Maintain your Card Room

There are many mills take care of their carding department. The Question is how efficient they are and what cost and quality? What could be the general concept of Maintenance. Lets Discuss about that.

What is the important thing in the quality assurance with respect to the card room? Since one bad card sliver can produce huge quantity of bad yarn, its important to know the health and performance of cards.

House Keeping

Keeping your card room clean will not only give a better quality but also will give your worker a clean environment. So more effort to be given to keep your card room clean. You may think that why I start with this. Because this is overlooked in most mills not given enough importance.

Changing of Card Clothing

Generally, People change the card clothing all at one time. If you want to produce yarn with consistent quality, it is better to change the clothings on the different organs separately.

Following Practices are found to be good

Cotton

1. Lickerin Wire - 150 Tonns
2. Flat Tops   - 350 to 500 Tonns
3. Cylinder Wire - Generally on observation of the condition of wires through Microscope. Below 2 years for High Speed Cards, Below 3 years for medium speed card (around 35 kgs/hour) & 4 years for low production cards.
        Using TSG/ GRAF or Sharprite Wire / The Indian Card Clothing are found to be helping in maintaining the sharpness of the wire.
4. Doffer Wire - If the tip is not having big land area or if there is no visual damages then we need not change it.
5. Stationary Flats - Below Lickeirin & Above doffer side - Along with Cylinder Wire
                              Above Lickerin - From Bottom First 3 to 4 Shall be changed along with Lickerin wire.

Synthetic Fibers PSF/Rayon

1. Lickerin - 200 to 250 Tonns ( Depending upon the physical condition)
2. Flat Tops - Because of the bulkiness it may loose its flexibility soon, but it may be slightly more than that of cotton. In General it is advisable to change at 500 to 600 Tonns
3. Cylinder wire -600 to 800 Tonns
4. Doffer Wire -  The life may be shorter because of lappings and damage so it is depending upon the damages and punch marks only.

For Synthetic fiber processing

The doffer wire should be cleaned with Petrol atleast once in a week. Using 3M burnishing pad will help to remove the impurities inside the wire blade and to some extent keep the tip of the wires in a polished and clean condition. This will help in better transfer.


Don't mount all the cards at one time or within short duration. Space-out the schedule. if you have 12 cards mount one card in every two months, in that way you will not variation on account of wire conditions.

There are some sitution you are going to change the process from polyester to cotton and want to produce good quality yarn. If you change all the clothing one by one it will be time consuming and you may not get the results. It is better to change the flat tops of all the cards, then change the lickeirn and stationary flats next, Third you can change the cylinder and doffer wire one by one. This will give a quality improvement immediately and in steps.

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