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TECHNOLOGY

Grade 5

PROCESSING MATERIALS

Module 14

TO PRINT ON CLOTH

Background information

Another method for obtaining coloured textile fabrics is to dye the yarn with which the fabric will be woven before weaving it. The patterns that are desired are then created while the fabric is woven. Patterns can also be printed onto fabric after it has been woven.

In India patterns have traditionally been applied with pattern blocks used to stamp the colour onto the cloth. The dye (paint) is spread over the block and the stamp is then pressed onto the fabric.

Nowadays screen-printing that is done with machines is also used to apply patterns to textile fabrics.

Assignment 1

You can apply a design of your own to cloth by printing it. You will need the following:

a 20cm x 20 cm piece of cloth; fabric paint; paintbrushes; a jug of water; pencil and paper. For the printing block you will need: a thin, compact sponge (from the cleaning equipment department at a supermarket); carbon paper for tracing; a pair of scissors; a flat piece of wood (8cm x 8cm) and wood glue;

or

a 20cm x 20 cm piece of cloth; fabric paint; paintbrushes; a jug of water; pencil and paper; a large potato and a sharp knife, if you cannot obtain the above; a wooden board; fibre-tipped pens (kokis); rubber gloves; an apron for protecting your clothes and old newspapers.

Research

Assignment 2

Collect examples of simple designs that could be transferred to stamps for printing on fabric. Make drawings of at least three examples

Source:

[LO 1.2]

Design

Assignment 3

Design simple stamps that could be used for printing on fabric.

[LO 1.5]

Assignment 4

My final choice.

Circle your best effort and develop and redraw it to the correct size inside the square (5 cm by 5 cm). Make notes to explain what you regard as good and weak about at least three of your designs. Use colour and supply labels.

Motivate (explain) why this is your final choice.

[LO 1.6]

Producing

Assignment 5

You are ready to make your printing block (stamp) now. Trace your pattern onto the sponge, using carbon paper and a pencil. Cut out the design, using a pair of scissors. Paste the cut design on the wooden block, with the wood glue, and leave it to dry.

OR

Cut the potato in half on the wooden board, but try to make a very smooth cut.

REMEMBER the following to avoid cutting yourself: Hold the knife in such a way that the blade is directed away from you. Cut away from your hand. Be sure to work under adult supervision.

Draw your design onto the cut surface of the potato, using the felt-tipped pen. Cut away the superfluous surface around your design (to a depth of 1cm). The surface that remains is the printing surface and will be what you see when you print the design onto the fabric. The potato is your printing stamp.

You are ready to start printing. Lay out a couple of layers of newspaper to have a smooth surface for printing. Dampen the cotton fabric and lay it out on the newspaper. Keep it in position by means of masking tape. Paint an even layer of fabric paint onto the printing surface of the printing stamp. Place the printing surface on the fabric and press it down firmly. Lift it carefully, apply more fabric paint and continue printing.

If you want to use two colours, it is advisable to make two printing blocks, as it may be difficult to clean one block well enough to prevent paint from smudging. If you do not want to take this amount of trouble, but want to print in two colours, you should use a lighter and a darker colour and print the lighter colour first.

You could also experiment with overprinting in two colours by printing one colour and waiting for it to dry completely before reprinting with another colour and another design.

Use pinking shears to cut the rough edges of the fabric or fray them. Use the cloth as a decorative cover for a jar of preserved fruit or vegetables. Tie it down with a matching ribbon or tape.

[LO 1.8]

Evaluation

Asssessment

LO 1

Technological Processes and Skills

The learner will be able to apply technological processes and skills ethically and responsibly using appropriate information and communication technologies.

We know this when the learner:

investigates:

1.2 finds out about existing products relevant to a problem, need or opportunity, and identifies some design aspects (e.g. who it is for, what it looks like, what it is for, what it is made of).

1.3 performs, where appropriate, scientific investigations about concepts relevant to a problem, need or opportunity using science process skills:

planning investigations;

conducting investigations;

processing and interpreting data;

evaluating and communicating findings.

designs:

1.4 writes or communicates, with assistance, a short and clear statement (design brief) related to a given problem, need or opportunity that demonstrates some understanding of the technological purposes of the solution;

1.5 suggests and records at least two alternative solutions to the problem, need or opportunity that link to the design brief and to given specifications and constraints (e.g. people, purpose, environment);

1.6 chooses one of these solutions, giving reasons for the choice, and develops the idea further.

makes:

1.8 uses suitable tools and materials to make products by measuring out, cutting or separating, shaping or forming, joining or combining, and finishing the chosen material.

evaluates:

1.10 evaluates, with assistance, the product according to the design brief and given spesifications and constraints (e.g. people, purpose, environment), and suggests improvements and modifications id necessary;

1.11 evaluates the plan of action followed and suggests improvements and modifications if necessary.

communicates:

1.12 produces labelled two-dimensional drawings enhanced with colour where appropriate.

Questions & Answers

do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Maciej
characteristics of micro business
Abigail
Do somebody tell me a best nano engineering book for beginners?
s. Reply
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
Virgil
is Bucky paper clear?
CYNTHIA
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Harper
Do you know which machine is used to that process?
s.
how to fabricate graphene ink ?
SUYASH Reply
for screen printed electrodes ?
SUYASH
What is lattice structure?
s. Reply
of graphene you mean?
Ebrahim
or in general
Ebrahim
in general
s.
Graphene has a hexagonal structure
tahir
On having this app for quite a bit time, Haven't realised there's a chat room in it.
Cied
what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
China
Cied
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
Porter
many many of nanotubes
Porter
what is the k.e before it land
Yasmin
what is the function of carbon nanotubes?
Cesar
I'm interested in nanotube
Uday
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
AMJAD
preparation of nanomaterial
Victor Reply
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
Himanshu Reply
good afternoon madam
AMJAD
what is system testing
AMJAD
what is the application of nanotechnology?
Stotaw
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
Azam
anybody can imagine what will be happen after 100 years from now in nano tech world
Prasenjit
after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
Azam
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
Prasenjit
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
Damian
silver nanoparticles could handle the job?
Damian
not now but maybe in future only AgNP maybe any other nanomaterials
Azam
Hello
Uday
I'm interested in Nanotube
Uday
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
Prasenjit
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Technology grade 5. OpenStax CNX. Sep 23, 2009 Download for free at http://cnx.org/content/col10979/1.2
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