INTRODUCTION
Rapid prototyping automates the fabrication of a prototype part from a three- dimensional (3D) CAD drawing. This physical model conveys more complete information about the product earlier in the development cycle. The turnaround time for a typical rapid prototype part can take a few days. Conventional prototyping may take weeks or even months, depending on the method used. Rapid prototyping can be quicker more cost effective means of building prototypes as opposed to conventional methods.
F ....etc

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Introduction:
Household items made of various kinds of plastic.
Plastic is the general common term for a wide range of synthetic or semisynthetic organic amorphous solid materials used in the manufacture of industrial products. Plastics are typically polymers of high molecular mass, and may contain other substances to improve performance and/or reduce costs. Monomers of Plastic are either natural or synthetic organic compounds.
The word is derived from the Greek past (plastikos) meaning fit for molding, and past ....etc

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Why use plastics
• Plastic are easily formed materials.
• The advantage to the manufacturer is that plastic products can be mass-produced and require less skilled staff.
• Plastics require little or no finishing, painting, polishing etc. Plastic is referred to as a self-finishing material. Particular finishes can be achieved at relatively low cost.
Plastics can be easily printed, decorated or painted.
• Plastics are corrosion resistant, and generally waterproof although certain types of plastics ....etc

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Design and Manufacturing of Injection Mould for Rotor Assembly



INTRODUCTION

OVERVIEOVERVIE


Injection Moulding requires that the material be heated to plastic state in a barrel and then forced into the mould cavity with a plunger under high pressure. The plasticization of the material in the barrel is facilitated by shear and friction from a rotating screw that also feeds the raw material. In thermoplastics, the material is cooled in the mould ....etc

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airbag is a vehicle safety device. It is an occupant restraint consisting of a flexible envelope designed to inflate rapidly in an automobile collision, to prevent vehicle occupants from striking interior objects such as the steering wheel or window.

PROVIDES PASSIVE RESTRAINT IN OUR CARS
ALTERNATIVE FOR SEAT BELTS
RISK REDUCTION

FUTURE OF AIR BAGS
SMART SYSTEMS- WEIGHT SENSORS- TO CLASSIFY PASSENGER
INFRARED OCCUPANT DETECTION- TO DETECT THE DISTANCE OF PASSENGER FROM THE AIR BAG AND TO ADAPT THE FO ....etc

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100/2014
Maximum : 100 marks
Time : 1 hour and 15 minutes

1.Which is the first synthetic fiber developed by Wallace Carothers at the chemical firm DuPont in 1030?
(A)Polyester
(B) Nylon
(C ) Acrylic
(D) Polyolefin

2.It it? the ratio of the actual vapour press urn to the saturated vapor pressure at the same temperature expressed as a percentage :
(A) Relative humidity
(B) Absolute humidity
(C ) Moisture contenty
(D) Moisture Regainty

3.The standard regain value of wool is :
(A) 17%
(B) 7%
(C ) 70%
(D) ....etc

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sir I want to about the knowledge in airbag and d
ownload in ppt file. santoshnahak ....etc

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1.The name of process of controlled wounding on rubber tree tor extraction of latex is :
(A)Picking(B)Sheeting(C )Cutting(D)Tapping

2.The grade of rubber sheet which is used mainly for tyre manufacturing is  :
(A)l ot(B)Off grade(C )RSS -1(D)RSS - 4

3.The name of plastic which is used for mineral water and carbonized beverage bottles :
(A)Polythene(B)Poly propelene (C )PET(D)PVC

4.What is the name of fibre which is extracted from coconut husk ?
(A)Coir(B)Jute(C )Cotton(D)Linen

5.______ ____is a commodity plas ....etc

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I am sujith,i want a seminar report in biotechnology.so i choose the topic DNA finger printing.so please send me that topic to my email
[email protected] ....etc

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PLASTICS EXPLOSION
INTRODUCTION
Synthetic polymers are often referred to as plastics, such as the well-known polyethylene and nylon. However, most of them can be classified in at least three main categories: thermoplastics, thermosets and elastomers.
Man-made polymers are used in a bewildering array of applications: food packaging, films, fibers, tubing, pipes, etc. The personal care industry also uses polymers to aid in texture of products, binding, and moisture retention (e.g. in hair gel and conditioners).
Plast ....etc

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