Washing Denim With Stone Free Process - EnZYBOOSTER

ENZYBOOSTER

WASHING DENIM

WITH A STONE-FREE

PROCESS

ENZYBOOSTER

EVOLUTION OF WASHING

Birthplace of Denim is France (Nimes) and it´s main use was as work clothes in the United States during the California gold rush

in the 1850's and the 1930's between the cowboys; companies like Levi's, Lee and Wrangler marketed a product for work

without washing and sturdy fabric, fashion as we understand

today does not occur until senior designers began showing their designs on these garments during the 1980s, even though hippies, rebels and artists were already differentiate their "look"

with this garment and denim had gained popularity worldwide.

Stone Wash process appears in 1981 and its advantage is that it

gives the garment a soft handle and aged-look was done along with abrasion produced by pumice stones in the washing machine. Subsequently appeared enzymes, microorganisms that

work on cellulose cotton, which has the advantage of giving effect with less weakening of fabric as

does the pumice stone, disadvantage is the back staining of indigo which is solved by adding chemicals to minimize

this contamination. The advantage is that it requires less rinsing processes compared with the case of the process with pumice stones.

Enzymes are eco-friendly to the environment, in the case of pumice stones there are disadvantages for removal

residual pumice from processed clothing items, the damage to the equipment for the overload of tumbling stones and particulate material can also clog machine drainage passage and drains and

sewer lines at the machine site.

The bio-stone wash (process with enzymes) is used in many cases in combination with pumice

stone to shorten process times and improved look. Some products like Perlite (silica rock) and other options that attempt to substitute the use of pumice stone are tested and included to

the process, attempting to avoid the disadvantages mentioned above.

The option presented here, is a

new process of bio-stone washing, by using a bio-degradable compound working in process with acid, hybrid or neutral cellulase enzymes: ENZYBOOSTER.

ENZYBOOSTER is a special compound, it works as a booster for such enzymes increasing efficiency and time of process, achieving desirable appearance and soft handle for fabric.

Second advantage, back staining is reduced, an ideal bio-stoning enzyme would posses high

abrasive activity as well as low back staining. Superior performance compared to

cellulase enzymes with pumice stone performance. It can works

as a substitute in the Stone Wash achieving a better quality process, less fibre damage, increased lightness for different denim (100% cotton and polyester-cotton blends) but with

accomplishment for “look” on each part of the garment in question. If required, can be

achieved a high degree of abrasion using ENZYBOOSTER, cellulase enzymes and pumice

stone, advantages still continues.

DOSAGE AND OPERATING CONDITIONS

We recommend tests to compare the degree of aged-look achieved with pumice stone to define the appropriate percentage, even though from experience a dose of 250 grams equals a pumice stone weight of 12 kilograms and can serve as reference to begin test runs. Cellulase enzymes are compatible with the product, operating times as well as the temperature and pH conditions can be handled routinely.

In the following figures, the differences are observed by using ENZYBOOSTER, invariably comparing two images by figure, which shows the results of the standard and the results obtained with the ENZYBOOSTER. The first five figures show results using acid cellulase enzyme in process, figures of six to ten are the results using neutral cellulase enzyme.

CHEMPRO 2013/R01 ENZY-EV

Process using Acid Enzyme and pumice stone (Left ) and process using Acid

Enzyme and ENZYBOOSTER (Right).

The tests are performed at room temperature (25 ᵒC) and the difference

is remarkable with a degree of superior clean fabric and hems obtained

with ENZYBOOSTER, even when the enzyme acid generates most back

staining of indigo. Seams retain their tone and there is no fouling. The

working pH is 5.5 to confirm the better performance and lower fouling is

achieved with our product. Figure No. 2 shows the degree of clean is

achieved even when the various technical studies confirm the

superiority in neutral enzyme cleaning with pumice stone (1), the re-

deposition mechanism (2) and the mechanisms which has attempted to

reduce fouling, either by means of surfactants or protease enzymes and

special enzymes compositions working at higher pH (3).

Process using Acid Enzyme and pumice stone (Left) and process using Acid


Figures No. 1 to the No. 5 show sections to undergo comparison of

several items and can confirm the usefulness of the proposed process.

Regarding the degree of cleaning process, is the result of post washing

enzymatic process consisting of Polyester ABS (anti back staining, 2.0

gr/lt) and Cotton ABS (2.0 gr/lt) with a cycle of 10 minutes at room

temperature to both cases.





Enzyme and ENZYBOOSTER (Right).Both cases.


Process using Neutral Enzyme and pumice stone (Left) and process using

Neutral Enzyme and ENZYBOOSTER (Right).

The tests are performed at room temperature (25 ᵒ C) and most notably

the finish you get is an even higher degree of clean fabric and hems with

ENZYBOOSTER, even when the enzyme generates the lowest re-

deposition of indigo. Retain their tone seams, no difference in both

cases. The working pH is 7.0 to confirm the better performance and

lower fouling is achieved with our product. Figure No. 7 shows the

degree of clean even when the enzyme is neutral cellulase for both

cases.



In the experience of operation and according to the degree of clean

fabric obtained, the results are acceptable to consider comparing the

look and clean achieved with acid enzyme process and ENZYBOOSTER

against the results of the neutral enzyme and pumice stone, it is shown

in the figures no. 11 and 12.

The cleaning stage is performed after enzymatic process consisting of

Polyester ABS (anti back staining, 2.0 gr/lt) and Cotton ABS (2.0 gr/lt)

with a cycle of 10 minutes at room temperature to both cases. This was

the same washing process in case of acid enzyme.

Figures from no. 6 to no. 10 will be the comparative details for the

neutral enzyme process.





Neutral Enzyme and ENZYBOOSTER (Right). Both cases.


Process with acid cellulase enzyme and ENZYBOOSTER (Left) versus process

with neutral cellulase enzyme and pumice stone (Right).

From the results shown, we compare the degree of clean fabric is

achieved, the most interesting is to obtain high degrees of abrasion and

low back staining with acid enzyme to overcome results giving neutral

enzyme.

We know that the cleaning process is achieved with wash cycles

including different compositions from alkaline compounds to washing

with peroxide and other oxidative chemicals. But in our case, is

obtained in less time and resources.

The advantage in using ENZYBOOSTER is based on:

1. Cost savings in machine maintenance, cleaning and waste disposal of

pumice stone are avoided.

2. Superior look of garment because the contrast is better due better

clean fabric, worn look is more uniform and this is accomplished with

less processing time, both by the enzymatic process, cleaning times and

waste separation of stones and dust inside the bags garments. The

punctures that often causes the stone pumice are avoided using our

chemical product, better preserving of fabric thickness.

Process with acid cellulase enzyme and ENZYBOOSTER (Left) versus process

with neutral cellulase enzyme and pumice stone (Right).


Bibliography:

1. Montazer, M. Sadeghian Maryan, A. A comparative Study of Different Stone

and Bio-stone Washing of Denim, South branch of Tehran Azad University

(Report).

2. Cavaco-Paulo, A. Mechanism of cellulase action in textile processes,

Carbohydrate Polymers 37, 273-277 (1998).

3. Cavaco-Paulo, A. Morgado, J. Almeida, L. Indigo Backstaining During

Cellulase Washing, Textile Research Journal 68(6), 398-401 (1998).

For product samples and additional technical information, we are at

your service, feel free for call us.

CHEMPRO

Buenos Aires 199 Tec. Delfina Escalona Amaro Santa Maria Zacatepec, e-mail: [email protected] Municipio Juan C. Bonilla Nextel ID: 52*14*61245 Puebla. C.P.72660 Tel: 01 2225901976 México. Ing. Alejandro Tiburcio Rangel

e-mail:[email protected] Nextel ID: 52*14*61246 Tel: 01 2225901005

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Washing Denim With Stone Free Process - EnZYBOOSTER