Tuesday, February 21, 2012

Printing Technology

What is screen printing
Textile printing refers to the production of designs of any kind that could not be made on textile fabrics by normal weaving/knitting techniques. Before the printing process, the cloth should be thoroughly prepared by different wet process namely designing, scouring and bleaching. Printing is mainly done on finished fabrics, curtain clothes, ladies dress materials, bed sheets, bed covers, fabric for children garments, gents shirts etc. to improve its attractiveness, marketability etc.
Screen printing can be done in single colour or in combination of different colours as per end use requirement. Colour combination is an important area by which the appearance of an ordinary fabric can be improved to a maximum extent. It is, therefore, necessary that the quality printing material, chemicals and printing screen should be good so that printed items are fully accepted in the market.
The various steps involved in printing process are
1.preparation of printing paste,
2.printing of fabric,
3.fixation of dye stuff by curing/steaming,
4.washing off,
5.calendering,
6.folding and packing.
It uses a rigid frame to support a porous mesh (screen) which, in turn, supports a stencil (design). Screens containing the designs is placed over the table and the dye paste is pressed over the screen by means of rubber squeezer. The stencil lets dye paste pass through the mesh (print area) and blocks it everywhere else, to produce an image. A variety of mesh/stencil/squeegee combinations provide a wide range of printing capabilities, thus making screen printing one of the most versatile printing processes known. This same versatility appeals to entrepreneurs in a nearly unlimited number of industries; the wide variety of uses makes screen printing that much more attractive.The selection of dyes and gums depends on the construction of basic cloth to be printed and their end use. After printing, the printed clothes are cured or steamed for the fixation of the colour. Later, the printed material is thoroughly washed to remove loose dye stuffs. Then, it is calendered, folded and packed for the delivery.
   
Quality Control and Standards

A quality printed item should have good fastness to washing, rubbing and light. This can be achieved by properly fixing the print on the cloth by curing or steaming. Dyes to be used should be of good quality and capable of giving bright shades. Printing quality is not covered by any specifications.
Screen Printing in General
Applications of screen printing
Silk Screen Printing Instructions
Printing Process Description :- Introduction to Screen Printing
Digital Textile Priniting :- A guide for beginners
Digital Textile Priniting:-Read Article
Digital Textile Priniting:-Emerging Technologies for Digital Textile Printing
Digital Textile Printing:- An Articles Library

Light-emitting nanofibers shine the way for optoelectronic textiles

Light-emitting nanofibers shine the way for optoelectronic textiles
OLEDs in fiber form could lead to revolutionary applications by integrating optical and optoelectronic devices into textile. Combined with nanoelectronic devices, we might one day see flexible optical sensors and display screens woven into shirts and other garments. You could literally wear your next-generation smart phone or iPad on your sleeves; including the solar panels to power them. health tips

Monday, February 13, 2012

Stop Cheating and republishing

It is observed that some bloggers related to textile industry are copying and republishing material from this blog , i appeal to them please stop it and remove it from your blog.The information shared here is available to public you can share it and you can provide a link in your blog to share.

Cheating is one of the major evils of the society. It is because of this that many have been destroyed and some have even lost their lives. Although cheating sounds something very small, but the effect it leaves cannot be described. An entire family might die of hunger just because they were cheated. A person might loose all his wealth just because of cheating. One may loose his life just because he was cheated.  

Allah dislikes cheating and the people who do it. in the Glorious Quran, Allah has warned those who indulge in cheating of dire consequences. 
Allah says in Surah Al-Mutaffifeen 83: 1 “Woe to Al‑Mutaffifoon (those who give less in measure and weight). Those who, when they have to receive by measure from men, demand full measure, And when they have to give by measure or weight to (other) men, give less than due” [al-Mutaffifeen 83:1]

Wednesday, February 8, 2012

Nike backs waterless dyeing | Dyes & Chemicals News

Nike backs waterless dyeing | Dyes & Chemicals News
BEAVERTON – Nike has entered into a strategic partnership with DyeCoo Textile Systems B.V., a Netherlands-based machinery builder that has developed and built the first commercially available waterless textile dyeing machines that use CO2 instead of water.
But with operating pressures for these machines reaching a massive 250 bar, can this technology really take off?

Friday, February 3, 2012

Colorfastness to bleaching:Peroxide

This method is intended for determining the resistance of the colour of textiles of all kinds, and in all forms, to the action of bleaching baths containing peroxide in concentrations commonly used in textile processing.

A specimen of the textile in contact with adjacent fabrics is immersed in the bleaching solution, rinsed and dried. The change in colour and the staining .

Wednesday, February 1, 2012

NanoKTN event focuses on ‘nano enhanced’ textiles

NanoKTN event focuses on ‘nano enhanced’ textiles

The Nanotechnology Knowledge Transfer Network (NanoKTN) has announced details of a workshop highlighting new developments applied to textiles using embedded electronics, 'smart' materials and surface coatings technologies.

Once applied to textiles they can enable interactivity, functionality and protection.

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