Wrinkle free resin finishing is a process to apply chemical resin onto fabrics functioning crosslinking between hydrogen bonds in order to enhance stability, on other words, fabrics are prevent to wrinkling. The ability of a fabric to recover to a definite degree is called crease recovery of the fabric.Tendency of fabrics made by cellulose, regenerated cellulose and blends with synthetic fibers to wrinkle after washing, tumble drying and wearing are higher. Today everybody wishes for that his/her dress retains just ironed shape. Wrinkle free finishes provide wrinkle free and soft look fabric. Wrinkle free finishes are broadly used in the textile industry to impart wrinkle-resistance to cellulosic materials such as cotton fabric.
Wrinkle free resin finishing is a process to apply chemical resin onto fabrics functioning crosslinking between hydrogen bonds in order to enhance stability, on other words, fabrics are prevent to wrinkling. The ability of a fabric to recover to a definite degree is called crease recovery of the fabric.Tendency of fabrics made by cellulose, regenerated cellulose and blends with synthetic fibers to wrinkle after washing, tumble drying and wearing are higher. Today everybody wishes for that his/her dress retains just ironed shape. Wrinkle free finishes provide wrinkle free and soft look fabric. Wrinkle free finishes are broadly used in the textile industry to impart wrinkle-resistance to cellulosic materials such as cotton fabric.
Flocking is defined as the application of fine particles to adhesive coated surfaces. Nowadays, this is usually done by the application of a high-voltage electric field. In a flocking machine the "flock" is given a negative charge whilst the substrate is earthed. Flock material flies vertically onto the substrate attaching to previously applied glue.
Flocking is defined as the application of fine particles to adhesive coated surfaces. Nowadays, this is usually done by the application of a high-voltage electric field. In a flocking machine the "flock" is given a negative charge whilst the substrate is earthed. Flock material flies vertically onto the substrate attaching to previously applied glue.
I created this presentation for my Quality Management group project. My group members contributed to the information in the slides but all visuals were created myself.
Styles of printing; Printing thickeners including synthetic thickeners; Printing auxiliaries; Printing of cotton with reactive dyes, wool, silk, nylon with acid and metal complex dyes, Printing of polyester with disperse dyes; Pigment printing; Resist and discharge printing of cotton, silk and polyester; Transfer printing of polyester; Inkjet printing.
Sublimation method depends on the use of a volatile dye in the printed design. When the paper is heated the dye is preferentially adsorbed from the vapour phase by the textile material with which the heated paper is held in contact. This is commercially the most important of the transfer-printing methods. Dye sublimation allows photo lab quality picture printing. During the dye sublimation printing process, an image is digitally printed in reverse with dye sublimation toners or inks on to media.
Wrinkle resistance varies from quite low in many fabrics to very high in resilient fabrics. In order to form a wrinkle, a fabric’s wrinkle resistance must be overcome. The fabric may, however, produce strains and store potential energy that can become evident as wrinkle recovery under suitable conditions.Resin & its use in Denim garments industry to create unique & vintage looks which add value to denim garments & improves it sale ability in market. In 80’s we have seen Resin being used to give non press , iron free trousers & now we are using in Denims to make wrinkles & creases to look natural vintage which stays after multiple home laundries.
Fixing agent is one of the important textile auxiliaries in dyeing and printing industry, which can improve the color fastness of dye in fabric. On the fabric, it can form insoluble colored material with dye, thus to improve the color of washing, perspiration fastness, and sometimes can improve its sun fastness.
In recent years, with the development of science and technology, dyeing and finishing technology has also been significantly improved. Due to the expansion of international textile trade and the improvement of people's living standards and environmental awareness, it's more required of textiles comfort, clean and safety. Since the 1970s, Germany first launched the "Blue Angel" plan, the world's developed countries (Japan, the United States, etc.) have passed and implemented the related laws, regulations, and rules for the various indicators of textiles. Green textiles require that in the printing and dyeing process prohibit the use of carcinogenic, teratogenic, poor biodegradability of poor and some aromatic amine intermediates banned in the regulations. At the same time, the use of additives not contain heavy metal ions and not producing free formaldehyde is also required, which means the use of "green auxiliaries”.
Classification
The commonly used color fixing agent for dyeing and printing in textile has cationic fixing agent, such as Cetylpyridinium Chloride, Cetylpyridinium Bromide; fixing agent Y; polyamine contraction (silk fixing agent la); crosslinking fixing agent; non formaldehyde dye fixing agent, and phenolic sulfonate formaldehyde condensate used for nylon (polyamide) fabrics instead of tannin as fixing agents.
Preparation
Take the fixing agent y as an example: After adding the quantitative double cyanide amine to the atmospheric pressure reaction kettle to dissolve, in order to quantify the formaldehyde solution in the constant agitation slowly drops into the reactor, finally uses the ammonium chloride neutralization, produces the certain solid quantity transparent viscous liquid to be the finished product. This method produces the formaldehyde fixing agent, the solid color effect is good but there is free formaldehyde pollution problem, which is now banned in many products.
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We all have good and bad thoughts from time to time and situation to situation. We are bombarded daily with spiraling thoughts(both negative and positive) creating all-consuming feel , making us difficult to manage with associated suffering. Good thoughts are like our Mob Signal (Positive thought) amidst noise(negative thought) in the atmosphere. Negative thoughts like noise outweigh positive thoughts. These thoughts often create unwanted confusion, trouble, stress and frustration in our mind as well as chaos in our physical world. Negative thoughts are also known as “distorted thinking”.
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
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2. WASH & WEAR AND DURABLE PRESS FINISH:
• Wash & Wear and durable press (permanent press) finishes
are also given using resin precondensates.
• Wash & Wear finish (Wash – Dry – Wear and no need for
Ironing) imparts crease recovery only and suitable where
pressed in creases are not required.
• This kind of finish is not suitable where pressed in creases are
required or where formation of sharp creases are hindered
during ironing.
• Inserted creases on this fabric disappear quickly during wear.
For sharp retention of pressed in creases and freedom from
ironing the fabrics, the garments require durable press finish.
3. DURABLE PRESS FINISHING:
This type of finish is generally used in garments
making.
DMDHEU is the resin which is used for this finishing.
These finishes are achieved by similar techniques as
crease recovery finishes.
4. The sequence of process of durable press finish
• The cross linking agents are first applied by padding.
• After padding, the fabric are made into garments or some
desired form.
• Then the Curing treatment is given to the fabric at a high
temperature in the form of garments.
• This finishing is called as Durable Press finishing.
5. DURABLE PRESS FINISHING:
High concentration of resin and curing at high temperature for
a longer time are required for this kind of finish.
This is a further development of Wash and Wear finish.
Urea Formaldehyde and Melamine formaldehyde resins are
not suitable for durable press finish because these
precondensates cures rapidly and it is difficult to keep them in
an uncured state for a long time.
DMEU or Ethyl Carbomates may also be used for durable
press finish.
6. DURABLE PRESS FINISHING:
• The resin suitable for this process should remain intact within
the fabric till the garment is cured and should not become
yellow in color.
• The resin should be fast to washing and should not affect the
Light fastness of certain dyes.
• The main disadvantage of this finish is loss in strength and
Reduction in Abrasion resistance, because of the combination
of high resin content, and prolonged curing at high
temperature.
• Ionic and Non-ionic softeners are therefore added to the resin
finishing bath to minimize the loss in strength and abrasion
resistance.
• Emulsion of polyethylene, polyvinyl chloride, silicones etc; are
also added.
7. DURABLE PRESS FINISHING:
PROCESS SEQUENCE:
• Pad-Dry-Cut and make garments – Insert creases or
Pleats by hot pressing – Cure – Wash – Hot rinse –
Cold rinse – Dry.
(OR)
• Make garments – treat with resin – hydro extract –
Press and form creases, Pleats with hot iron – Dry –
Cure - Wash – Hot rinse – Cold rinse – Dry.
9. DURABLE PRESS FINISHING:
POLYSET PROCESS ( WET FIXATION PROCESS ):
The blended fabrics are better crease resistant
than 100% cellulosic fabrics.
Still ironing is necessary after washing to wear
in case of blends.
So, durable press finish is also given for blends
but following a different process sequence.
10. DURABLE PRESS FINISHING:
PROCESS SEQUENCE:
Resin solution and additives ( without catalyst )
– batch at 70 C for 2 hours
– Wash - Dry
– Pad with catalyst
– Dry – Stitch garment
– hot press to shape and form creases and pleats
– Cure at 160 C for 10 to 15 min
– Wash
_ Hot rinse
– Cold rinse
– Dry.
11. DURABLE PRESS FINISHING:
PARAMETERS:
• 1. Time of heat setting,
• 2. Temperature of heat setting
• 3. Over feeding,
• 4. Tension of the fabric.
Tension during heat setting is also an important
factor it will disturb Diffusion and Fixation process.