Textile sizing wax for use in the sizing box and the after wax applicator system
JEGAWAX is a specially designed, formulated emulsified wax, which acts as a softener and lubricant. It comes in 100% granulated powder for use as an additive to natural and synthetic based size formulations to be applied in the size box.
JEGAWAX is also an afterwax to be applied in heated applicators. (The material is in solid form and needs a minimum temperature of 47 degrees Celsius to melt.)
This is a dispersible lubricant with good lubricating properties to size films of starch and/or polymers. (E.G. PVA, acrylics, CMC, or PENFLEX type series.) JEGAWAX is designed to be used in formulations which require low film tensile loss and high lubrication. JEGAWAX has unique dispersion that creates better encapsulation and therefore better fiber lay (reduced hairiness). JEGAWAX creates a softer dry split, which reduces hairiness.
JEGAWAX is compatible with all standard size formula additives currently in use. It contains defoamers, plasticizers, and other necessary process aides to promote good sizing quality and performance.
JEGAWAX should be added at 2-8% of the weight of other materials in the sizing formula depending on fabric density and weaving difficulty. Since the JEGAWAX particles will be in emulsion form in the size solution, the particles will adhere to the outside of the film when the yarn travels thru the size box, providing the lubrication where it is needed, outside the film surface.
JEGAWAX should be used as an after wax on all high density styles, either for 100% natural yarns, 100% synthetic yarns or for yarns that are a combination of both natural and synthetic fibers. The use of JEGAWAX will avoid fabric defects due to yarns clinging together and will increase weaving efficiencies.
JEGAWAX is to be used in heated after wax systems or applicators with a minimum temperature of 47 degrees Celsius. After waxing, while being an option on shuttle looms, has become a requirement for shuttle-less looms, especially air jets.
A small quantity of solid wax such as JEGAWAX is preferable to a liquid wax. Liquid waxes normally create streaks on the fabric after smearing on loom parts, and therefore are not recommended.
JEGAWAX is applied on the warp sheet by means of a roller, which has a circumference speed of 1-2% of the warp sheet speed with the applicator roll moving in the same direction as the warp sheet.
The wax is normally applied in a molten state or liquid state, at a temperature of about 80 degrees Celsius. (With JEGAWAX, the temperature can be a minimum of 60 degrees Celsius, thereby providing energy savings in the application.) JEGAWAX takes about 3 seconds to dry on the warp sheet after application.
The quantities used are 0.6-0.9% (less than 1%) of the weight of the yarn for 100% synthetic yarns and 0.4-0.7% for blends of natural and synthetic yarns as well as for 100% rayon or cotton yarns.
If by accident, there is excessive application or deposit of JEGAWAX on the yarn, this will not create a finishing problem like with other waxes due to JEGAWAX easy desize properties.
The highly concentrated JEGAWAX is not only a lubricant and a softener to be used as a size box lubricant but it is also a most effective after wax.
The reduction of “weft related warp stops,” or warp stops on the loom due to poor shed openings, will decrease substantially. This translates into higher grade A fabric production and higher weaving efficiencies!
| COLOR | OFF WHITE-YELLOWISH |
| SOLIDS | 99.75% MINIMUM |
| PHYSICAL APPEARANCE | GRANULATED POWDER |
| INSOLUBLES | 0.1% MAXIMUM |
| ACID VALUE | 7.0% MAXIMUM |
| FREE FATTY ACID | 3.5% MAXIMUM |
| SOLUBILITY IN WATER | DISPERSIBLE AND 100% SAPONIFIABLE |
| MELT RANGE | 47 DEGREES CENTIGRADE |
| MELTING POINT | > 59C |
The purpose of a chemical such as JEGAWAX is to provide the size film with flexibility, softness, and lubrication as necessary for excellent weaving efficiencies when applied in the size box. When applied through the afterwax applicator, JEGAWAX provides additional lubrication outside the yarn bundle to reduce fiber to fiber friction and loom to yarn abrasion.
JEGAWAX, as a dispersable wax, one that stays dispersed in the size solution, provides much better encapsulation than other waxes with effective coverage around the yarn surface almost 360 degrees. This superior encapsulation makes for an easier split at the front on the slasher, decreasing the damage done to the yarn, and at the same time, correspondingly decreases the hairiness factor.
The studies on hairiness made so far by all leading textile research institutes, indicate that hairiness control is one of the primary objectives in any sizing formula where the yarn is destined for the high speed weaving. It has been proven that excessive amounts of hair over 3mm long can be responsible for up to ten efficiency points (overall).
JEGAWAX incorporates emulsifiers that do not affect the starch negatively as others do and can be used in recommended amounts without any concern for reduced starch adhesion or desizing problems. There is a reluctance by mills to use adequate amounts of wax due to desizing problems. By not using the proper amount of wax, efficiencies are compromised. With JEGAWAX, the right amounts can be used without a desizing problem occurring and therefore contributing to higher weaving efficiencies!!!
The coefficient of friction of JEGAWAX is extraordinary. It is the leading wax used in over 52 countries for high speed weaving of all types of spun yarns. [SEE APPENDIX A ON CALCULATION}
JEGAWAX is packed in 25 kilo, export qualified paper bags. It is preferable that JEGAWAX is stored in a dry area.
JEGAWAX complies with the toxic substances act and is manufactured under 9002 certified procedures.
Coefficient of friction can define the amount of resistive force a yarn will exert and have exerted upon it by machine and other yarn surfaces during fabric forming or preparation processes. A method was developed to determine the coefficient of friction on test yarns using equipment available in a standard textile research and testing laboratory.
The method to measure coefficient of friction requires a standard Instron tensile tester with a load cell in the range of 100 grams maximum load. A capstan device was designed to fit into the upper jaw clamp of the tensile tester. The capstan is a 2.54cm diameter, stainless steel, disc type thread guide of the variety used in warpers or knitting creels, circular in shape and having a recessed, grooved surface on the outer diameter which prevents the thread from slipping off the guide. The disc is supported through the center by a nut and bolt which attach it to two flat, rectangular, aluminum plates on either face of the disc. The two plates are offset from the disc perimeter to a center line above the disc so that they form a tongue support which is clamped into the test jaws.
A gauge length of 25.4 cm was used for the test. The yarn length required was 38.1 cm to allow it to extend from the lower jaw which was fixed, to the disc, over the disc’s grooved perimeter, and down below the disc. The thread was held under load by a brass weight and alligator clamp assembly which weighed 9.8 grams and measured 5.1cm length.
The Instron tester scale was calibrated to zero with the capstan in place and the full scale load set to 100 grams. The test yarn and the weight were mounted in the tester, and the initial chart pen location was marked prior to the start of each test. A crosshead speed of 25.4 cm/min and a chart speed of 50.8 cm/min were used for the test.
At the beginning of the test, the load required to overcome static friction and initiate movement of the yarn across the capstan was registered by the chart pen as a peak. This initial peak load was followed by a rapid decrease in magnitude of load to a level greater than the initial pen position but less than the peak position. The load registration during movement of the yarn across the capstan was the result of dynamic friction. As the test progressed, the decrease in thread length on the weighted, registration side of the capstan caused a load decrease. When the advancing upper crosshead pulled the thread to the point where the clamp touched the disc capstan, the test was manually stopped. Ten samples of each type of sized yarn were tested in this manner. To prevent contamination of the capstan surface by previous samples, the capstan was cleaned with an alcohol based solvent between tests.
Equation 1: The initial (static) friction is determined by use of Amonton’s Law as:
μ= (1n L1 – 1n L0)/Θ
Where:
L1 = peak load at start
L0 = initial load
Θ = Π
Equation 2: For determination of dynamic friction, the average load is calculated as:
Ld = (Ldi + Ldf)/2
Where:
Ldi = initial dynamic load
Ldf = final dynamic load
Dynamic friction is determined in the same manner as static friction, except Ld is substituted in Equation 1 for L1.
The previous excerpt from: Thomas Jr., Brayshaw, and Rutledge. “Mechanical Effects of Lubricant Auxiliary Agents in Size Film Reinforcement of Warp Yarns”. March 1996. Textile Chemist and Colorist
A] Glass Wares
1. 250 ml glass beaker
2. Glass rod suitable for stirring
B] Equipment
1. Laboratory weighing scale
2. Hot Plate
3. Cold water bath
C] Precautions
C1 Heat resistant gloves
D] Procedure
D1) -Clean 250ml glass beaker
-Put 90ml water in it
-Put it on the hot plate and start heating
D2) Separately weight 10gm of sample to be tested and add in above beaker having water along with stirring.
D3) Continue to stir and heat until it reaches 90 degrees Celsius or until it begins boiling.
D4) At boiling temperature or at 90 degrees Celsius it should be milky white emulsion.
D5) After reaching its boiling point or 90 degrees stop heating and place the beaker in cold water and start cooling and stirring until it reaches 25 degrees Celsius.
D6) At 25 degrees Celsius it should be a milky white, thick emulsion and should remain stable for at least one hour