Chain Mercerizing Range

Ammonia-mercerizer

Chain mercerising range: In this machine the mercerising lye causes fabric shrinkage, it is necessary to arrange the machine compliments in such a manner that the finished fabric satisfies the dimensional requirements in all respects.

. Fabric entrance section: The fabric is taken of from its plighted condition through a set of automatic cloth guiders, guide rollers and tension bars.

. Fabric entrance section: The fabric is taken of from its plighted condition through a set of automatic cloth guiders, guide rollers and tension bars.

b. Impregnation section: In the case of the chain type mercerising machines, impregnation with the mercerising lye is carried out in suitably dimensioned padding mangles.  The mercerising lye having an optimum concentration of caustic soda is continuously fed to the trough of the padding mangle. the Single Web of fabric gets a dip in the lye and is then passed through the padding mangle, where the excess lye is squeezed out from the impregnated cloth. Small machines have one padder whenever more mercerising production is required, but the passage through one padder is not sufficient to make up the lye action time. A second impregnation is, therefore introduced in the system.  Usually, two  lye pads give the required production, but, first still higher production speeds, a third impregnation padder is necessary.  It is necessary to decide on the expected production before the installation of the mercerising range.

c. Width stretching and stabilizing section: The last in with due to shrink the by light action is to be recovered by stretching the impregnated cloth in at the stenter the length of the stenter difference on the production needed and is to be decided upon beforehand.

A weak lye is sprayed on the fabric, while it is being stretched in the stenter frame.  The letter was from of the cloth in the stenter maybe sprayed with a still weaker lye.

d. Steam recuperation zone: After squeezing the fabric at the end of the stenter through the squeezing mangle, the fabric is introduced into the lye recuperation section, where steam heated water, near boil, in the recuperation  washing compartment with top and bottom rollers, recovers the major quantity of lye.

e. The washing section: The remaining portion of the lye is washed out of the cloth in the washing section having the requisite number of washing compartments.

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