What is Sanforizing Machine? What is Sanforized Denim?

What is Sanforizing Machine? What is Sanforized Denim?

Sanforizing Machine

Details in Sanforizing/Finishing machine

  1. Machine Name : Denim sanforizing / finishing range.
  2. Country origin : Morrision, USA
  3. Model No. : Serial No. 295
  4. No. of machine : 01
  5. Speed of the machine : 12 meters / minute (Stretch / Lycra fabric)

: 25 meters  / minute (Normal fabric ie Non stretch)

  1. Production capacity per day : 22.4X1350X.95)=27216 Mts (Considering the product mix 20% stretch fabric and 80% non stretch fabric)

Down Time :

  1. Start time 30 min.
  2. Shut down time 1 hour (Cleaning and cool down the sanfor belt.)

The sequence of the Sanforizing/Finishing Machine

Feed in Grey fabric

Singing

Finishing

Drying

Sanforizing

Batching

Different type of finished fabric

Operation staff for weaving section:

  • Manager
  • Asst. Manager
  • Sr. Executive
  • Executive
  • Supervisor
  • Operator
  • Asst. Operator
  • Helper

Woven Fabric

The beam fitter’s checks the fabric for:

  • Any wrong or broken design
  • Any wrong drawing and denting
  • Fabric width, warp, weft density
  • Any other cloth defects

Any fault found in the fabric is corrected over the beam and then handed over operators for normal running for all types of fabric the first of fabric is send to quality control department for subsequent parameter test upon getting to Quality Approval from QAD the operator start machine for bulk production.

Different type of grey fabric

Conclusion

In growing market for casual & leisure wear, Denim fabrics represent a very dominant market share. The annual global production of Denim fabric is estimate at about 3 billion square meters. The production growth rate is calculated at about 3%.

Up until now approximately 80% of the total production of Denims has been based on “classic fabrics” like blue/white, blue/blue, blue/black or black/black fabrics.

As in other branches of the textile industry, the production of Denim worldwide is following fashion trends.

There is currency a tremendous increase in market demand for lighter weight fabric, for fabrics with increased softness, fabric with a more elegant drape or fabrics with a “different touch”

To satisfy these trends, the demand for ring spun yarns has undergone enormous growth over the last few years.

In addition special yarns-such as slub yarns have been different developed to create fabrics which offer a different appearance & new aesthetics

A huge variety of garment wash processes have been developed, and garment dye have been introduced to produce colored Denims with special effects.

Besides the efforts already mentioned, fiber blends have become interesting for the manufacturer and consumers.

For example fiber blends specially blends of cotton and cellulose fibers chance to cross borders linked to the characteristics of different spinning systems.

Finally all these activities were targeted to create fabrics with unique characterizes or properties

Written By – Farid Ahmed, General Manager, Knit Dyeing Textile Ltd. Epz, Savar, Dhaka
How Monforts Sanforizing Machine Works?

How Monforts Sanforizing Machine Works?

Sanforizing Machine

Sanforizing Machine is the last stage of woven fabric processing. This stage is called mechanical shrinkage. In this stage fabric shrinkage is controlled by means of mechanical application & using steam. The shrinking process takes place between the rubber belt and the heated shrinking cylinder. The pressure roll presses the rubber belt against the heated shrinking cylinder and the rubber belt is thereby stretched. Leaving this nip point, the pressure is relieved and the rubber belt contracts. The fabric between the rubber belt and the heated shrinking cylinder has to follow this contraction of the belt and thereby shrunk. Changing the rubber belt pressure changing result in the fabric shrinkage. The higher the pressure, the greater the shrinkage will be. In ATL Finishing  there are two Sanforizing Machine. Machine details are given below

Specification of Monforts Sanforizing Machine

  • M/C  Name: N
  • Origin:    Germany
  • Pressure in Blanket = 2 – 3 bar
  • Speed for coarse fabric = 30 – 50 m/min
  • Speed for thin fabric = 60 – 70 m/min
  • Nominal width = 180 – 260 cm
  • Mechanical speed = 5 – 100 m/min

Sketch Diagram of Sanforizing Machine

Sketch Diagram of Sanforizing Machine
Sketch Diagram of Sanforizing Machine

Flow diagram of Sanforizing Machine

Fabric inlet

Guide roller

Damping roller

Water Spray

Rubber belt

Steam Cylinder

Blanket steam drum

Cooling cylinder

Batcher

Operational Procedure of Sanforizing Machine

Fabric inlet of Sanforizing Machine: fabric passes over some free roller & guider then over the steam heated roller. In the steam heated roller the fabric is wetted a little bit.

Rubber belt shrinkage unit: The function of the machine is mainly controlled in this section. Here there is a rubber belt which is pressed by a steam heated stainless steel roller. This rubber belt is continuously cooled by passing water. When the fabric goes through the nip point of roller & blanket then the fabric goes to shrink. The amount of shrinkage depends on amount of pressure applied.

Drying cylinder: After shrinkage fabric goes through drying cylinder for drying.Here cylinder is heated by means of steam

Cooling cylinder: After drying the fabric is passed over cooling roller for lowering temperature.

Folder & batch winder: Finally the fabric pass over the folded roller to collect on fabric storage bench or it will roll on batcher. Then its go for final inspection.

Conclusion

In Auto different kinds of finishing m/c r available such as Stenter machine, Monforts Sanforizing machine, Emerizing m/c, Calendering m/c. By useing these m/cs here water proofing, flame proofing,rot proofing, attractiveness, service ability,fastness properties r increased..

Dr. William Jons, Textile Technologist, Osaka Textile Division, Germany