When cotton is dyed in gray state it is important to evaluate the wetting property of an auxiliary used as dispersing agent or colloid protective in order to determine if the product can be used without the addition of another wetting product. This test will show the wetting and penetration properties of the DPA when dyeing gray cotton. We sale Asset Management Group Wise Allotment Software
Material and machinery
Substrate :Cotton
in gray state,
10 gr. , Article Nr. 3034 (B)
Dyeing recipe 4,0
% Cibacron Navy F-G (A)
3,0 g/l Lyoprint RG (A)
20 g/l Glauber’s salt (A)
2,5 ml/l Caustic soda 30 % (D)
1,2 g/l soda ash (C)
Auxiliary 0
– 1 – 2 – 4 g/l of the tested product
Machinery AHIBA
Water de-ionized
or distillate water ( soft water )
Liquor ratio 1
: 40
Dyeing procedure Process 1b, Pattern card 3170
Ahiba Machinery for Cotton Penetration
Finishing rinsing5
min. cold
5 min. hot (80 – 90 ° C)
soaping 2 g/l Eriopon CRN
10 min. at the boil
rinsing 5 min. cold
Evaluation The penetration of the dyeing as well as
the surface levelness are compared and
rated :
Penetration note Surface levelness
good 5 level
medium 3 slightly unlevel
insufficient 1 unlevel
Enclosure : one page for registration
The philosophy of “Digital Bangladesh” comprises ensuring people’s democracy and rights, transparency, accountability, establishing justice and ensuring delivery of government services in each door through maximum use of technology-with the ultimate goal to improve the daily lifestyle of general people. Government’s “Digital Bangladesh” includes all classes of people and does not discriminate people in terms of technology. Hence, government have emphasized on the four elements of “Digital Bangladesh Vision” which are human resource development, people involvement, civil services and use of information technology in business.
The government has to realize that Digital Bangladesh is a vision that can be turned into reality only through joint efforts by all sectors — if they think that it is something that the government will deliver to the people on their own, they will start from the wrong premise and Digital Bangladesh may always remain nothing more than a politician’s game of words and hollow promises.
Nap Raising Machine – It is apparent from the components of Digital Bangladesh listed above that we will require a holistic approach that will address all of the components systematically. An important implication of that is that the government’s administrative structure should be re-organized to handle such policy-making that spans across different sectors…
*seams should be flat felt because this garment is not wrinkle free we are using closed serge on wrinkle free shirts to improve wrinkle free apperance *slits should be 4″ please review *bring oversize body length to spec *bring all other measurements to spec *please proceed to PSWT sample with above corrections and following pattern sent.
*Flat felt seam is incorrect should be front over back — PLEASE CORRECT
*dart is not updated the angle is wrong — PLEASE CORRECT
*Please send revised sample in Oversize for our review before proceeding to bulk
*Flat felt seam is incorrect should be front over back — PLEASE CORRECT
*bring measurements to spec
*Ok to proceed to production — issued ok production form
*Fit was very nice — VERY GOOD WORK — keep it up for bulk production
*please place side seam labels going towards the back — not the front
*Ok to proceed to production — Ok production form issued
Determination of calcium carbonate dispersing power (threshold effect)
Principle
The products to be tested are titrated with a calcium acetate solution in the presence of carbonate ions.
The amount of calcium carbonate inhibited per gram of test product is calculated.
The test provides an indication of the strength of the threshold effect (CaCO3 dispersing power) of chemicals based on polyacrylic acids.
Chemicals and apparatus
Glassware: 250-ml beakers (not less than 3 per test substance),
several pipettes, measuring cylinders, etc.
2 g test substance is weighed into a 250-ml beaker, dissolved in
50 ml de-ionized or distilled water and the solution is
adjusted to pH 8 with caustic soda 3 % while being stirred.
10 ml soda solution 2% is stirred in, the mixture is made up to 150 ml
and adjusted to pH 11 with caustic soda 3%.
Phase 1: Preliminary titration
The amount (ml) of calcium acetate solution which causes permanent turbidity of the test solution is first determined for each product.
Phase 2: Main titration
To confirm the preliminary titration results, further tests are carried out with a series of linearly graduated amounts (ml) of calcium acetate solution, the mid-point of the series being the amount (ml) found from the preliminary titration. –> see example
Increments of 4 ml are suggested.
Important: The weighed amount used for this titration should be enough to consume 20 – 30 ml calcium acetate solution.
Example Prelim. titration: weighed amt. = 2.0 g actual consumption = 60 ml Main titration: weighed amt. = 0.8 g calc. consumption = 24 ml The main titration is hence performed with :20 ml, 24 ml and 28 ml.
Important: As the reaction is time-dependent, the time varying with the product, wait one hour before definitive assessment !
In this case the end-point of the
titration is at 24 ml calcium
acetate solution
Calculation
The amount of calcium that can be
inactivated per gram of product and/or the maximum water hardness for which 1 g/l is enough is calculated.
Important
: 1ml of the 2 % calcium acetate solution contains 5.067 mg Ca
Maximum amount of Ca that can be
inactivated per gram of product:
mg Ca / g = 5.067 x cons. Ca acetate
in ml
weighed
amount
Maximum water hardness for 1 g product:
°dH* / g = 0.7 x cons. Ca acetate in
ml
weighed
amount
Materials Plastics, Composites Operation Two-handed operation required to release the pendulum Test Type Charpy test according to ISO 179, ASTM D 6110 Charpy test details Impact Energy capacity: 5.50 joules Instrumented pendulum Charpy pendulum with low vibration lightweight double carbon rod pendulum. Adapter plates for 10 mm wide and 4 mm thick specimen (ISO specimen) Data acquiring System for online monitoring and data acquisition (fixed) Core i5. Software Software including standardized test programs covering over 600 standards – Multi user license. Virtual testing software provides the option of using the software for teaching/training of wide range of tests without a testing machine Accessories Installation and commissioning of the apparatus as well as the training of NTU rep on site will be responsibility of the supplier at his own cost Read about Steel Ball Drop Impact Test Machine
Adapter plates for 10 mm wide and 4 mm thick specimen (ISO specimen) Data acquiring System for online monitoring and data acquisition (fixed) Core i5. Software Software including standardized test programs covering over 600 standards – Multi user license. Virtual testing software provides the option of using the software for teaching/training of wide range of tests without a testing machine Accessories Installation and commissioning of the apparatus as well as the training of NTU rep on site will be responsibility of the supplier at his own cost Read about Steel Ball Drop Impact Test Machine
Blade to the jaw above the distance: 22 ± 0.2mm 7 impact blade angle: 37 °±l °
Volume: about 550400690 mm
Seam Failure – Seam Slippage
DESCRIPTION:
Where the yarns in the fabric pull out of the seam from the edge. This often occurs on fabrics constructed of continuous filament yarns that are very smooth and have a slick surface. Also caused by loosely constructed fabrics. MINIMIZING SEAM FAILURES – SEAM SLIPPAGE:
Consider changing the seam construction to a French seam construction;
Increase the seam width or width of bite;
Optimize the stitches per inch;
Contact your fabric supplier.Seam Slippage on Rayon Fabric
Skipped Stitches
DESCRIPTION: Where the stitch length is inconsistent, possibly appearing as double the normal stitch length; or where you can see that the threads in the stitch are not properly connected together. Caused by the stitch forming device in the sewing machine missing the thread loop during stitch formation causing a defective stitch. On looper type stitches, this will allow the stitch to unravel causing seam failure.
MINIMIZING SKIPPED STITCHES
Use a better quality sewing thread. This may include going to a higher performance thread designed to minimize sewing interruptions. (See the Thread Selection Guide and/or Minimizing Thread Breakage & Skipped Stitches);
Insure proper machine maintenance and sewing machine adjustments;
Make sure sewing machines are properly maintained and adjusted for the fabric and sewing operation. (See Machine Maintenance Checklist);
Observe sewing operators for correct material handling techniques. 401 Chainstitch
