What is (SFI) Short Fiber Index In cotton HVI report.

SFI Short fiber index is a very important parameter in cotton results as it determined the ratio of short fiber in cotton. SFI indicates the %age of fiber having less than half inch length. This ratio is counted on High Volume Instrument HVI, one of the latest and best cotton testing instruments being used in the textile sector. The higher SFI is usually considered bad in cotton results.

SFI below 6.00 is an indication that cotton has very less short fiber which is good for cotton consumers. But this sort of cotton is rarely available.

Normally and mostly cotton contain SFI between the range of 6 to 9 and it’s acceptable for most cotton buyers.

SFI short fiber index from 10 to 13 is considered a little higher side ratio but to some extent acceptable for the cotton consumers.

SFI short fiber index above 14 is usually not acceptable for yarn manufacturers who want to make fine quality yarns and they avoid buying cotton with such high value of SFI.

What is Rd and +b in cotton and its definition?

Both Rd and +b are the color grade parameters for cotton. Rd describes the reflectance in cotton. Higher rd indicates the brightness in cotton while lower rd reflects the dullness or grey look in cotton. Cotton having higher rd is considered the better cotton and it also adds to its value and price.
While +b in cotton indicates the yellowness in cotton. Both these units are tested or measured on fiber testing machine HVI (High Volume Instrument) Earlier Fibro graph machine was used to test the cotton results but now a days majority of labs and mills use HVI machine with latest features.

What is difference between ring spun, open end and Autocoro yarn

Ring spun yarn is a better quality yarn with higher prices and higher cost of production as compare to open end or Autocoro yarns.
Ring spun yarn factory consist of the following manufacturing processes.
1. Blow Room.
2. Carding.
3. Drawing.
4. Combers or Combing process.
5. Simplex
6. Ring
7. Winding or Auto cone department
Above is the complete spinning or yarn manufacturing process engage in the ring spun yarn production.

The open end or Autocoro is same till Drawing process but after that all work is done by rotor machine which decrease the production cost but at the same time as high draft is given so the quality of yarn suffered due to high draft. This factor also affects the quality of yarns. In ring we hae wide range of options for yarn counts but in open end or autocoro we can produce limited number of yarn counts.

Following processes are engaged in open end or autocoro yarn manufacturing.
1. Blow Room.
2. Carding.
3. Drawing
4. Rotor machines.

What is difference between Carded and Combed Yarn

Every spun yarn is carded yarn in spinning process as carding is the initial process to clean the cotton with carding machine. The purpose of carding process is to clean the cotton from trash, leaf and other foreign matters. This process cleaned the cotton and straighten the fibers and converted the cotton into sliver. After this process this sliver is converted into final form of yarn. There is another process which is used to make the yarn finer by applying the combing process. the cotton which passed through this combing process is more cleaned and all the damage, entangled and floating fibers are removed from it. in comping process around 15% to 20% more cleaning of cotton is conducted. The combed yarn is much better in quality as compared with carded yarns.

Combed yarn is used to make more reliable and fine quality fabrics both in knitting and weaving. The price of this yarn is also higher than the carded yarn as more waste is drawn out from the cotton which also increased the cost of yarn production. Combed yarn run smoothly of fabric manufacturing machines than the carded yarn.

Hope you have now understood the difference between carded yarn and combed yarn. if need further clarification about which is better yarn in carded and combed yarn, please drop your question in comment section. We would be happy to answer you and help you in solving your problems.

How to find Textiles Buyers and Sellers.

How to find yarn buyers

Textiles Bar is one of the best place to find important textile information. It is also a market place to sell you textile goods. It is a complete solution and answer to the following questions and demands of textile professional.

  • How to find Yarn Buyers.
  • How to find Yarn Sellers.
  • How to find Fabric Buyers.
  • How to find Fabric Sellers.
  • How to find Cotton Buyers.
  • How to find Cotton Sellers.
  • How to find Garments buyers and Sellers.
  • How to find Towel Buyers and Sellers.
  • How to find Bed Sheets Buyers and sellers.
  • How to find Textile Machinery Buyers and Sellers.
  • How to find Textile Dyes and Chemicals Buyers and Sellers.

How to Use Textiles Bar to Sell my Products.

Its a very simple, Easy and quick way to post your products. All these services are 100% free. No monthly or annual charges for these services.

  • Go to USER PAGE and fill the required credentials to proceed.
  • It is highly recommended to upload the pictures of your product for better attention.
  • Your product will be posted and a password will be sent to your given email id.
  • You can change your password any time.
  • Remember your Email id and password as your user email and password will help to edit or remove your posts at any time going through the page MANAGE.


As its a specific place for textile goods only so your products will reach to your target buyers quicker than any other platform. The other most important thing is that there will be no middle man between seller and buyer. Buyers of your product will contact you directly via contact details you have provided. If you are a buyer then this is the best place for you to post your requirement and sellers with these products can contact you directly. Please take special care to select the category related to your product.

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