plastic moulding a topic with some less knowledges
but surely help out the masters as well as unger graduates in their assignments
no need to modify just go through it and take some innovative ideas and some will be making some more better ones
but for those who are in a hurry and want to minimise their time or wants to save their time its a copmlete package just go through it
this is my prsentation of Plastic Process and Processing Parameter in manufacturing process. here discussed moulding process for plastic, plastic injection moulding, machine parts and procedure, material used to making mould and blow moulding process, thermoforming process, vacuum forming process, and application
this is my prsentation of Plastic Process and Processing Parameter in manufacturing process. here discussed moulding process for plastic, plastic injection moulding, machine parts and procedure, material used to making mould and blow moulding process, thermoforming process, vacuum forming process, and application
This topic relates to polymer structure and types of plastic. It also explains the usage and mechanical properties of thermo plastic, thermosetting plastic and the process of making plastic products.
A presentation on topic Plastics ceramics and glass processing, the all content based on GTU syllabus And ideal for gtu students. The PPT contains videos for clear understanding of concept.
Plastic manufacturing "forming and shaping plastics"Ayush Mathur
how plastic products are manufactured?
what are the processes involved in manufacturing of these products?
what are the various machine tools used?
what are the various types of plastics and what is resin?
what are the diffrent steps in manufacturing?
Get all these answers in this presentation.
It is our pleasure to introduce our latest resource guide to help designers, engineers and purchasing professionals navigate the world of plastic injection molding. We think it is one of the most comprehensive of it's kind with 200+ terms included. You might find it helpful in training new employees to the industry or your company. Thank you for viewing, and please share it with others who might benefit!
Fabrication of Plastics in polymer technology for B.Tech students in India specially for JNTU K,H&A in Andhra Pradesh Telangana and also for other Indian Universities.
By
Gurram.Achyuth Kumar
A
This topic relates to polymer structure and types of plastic. It also explains the usage and mechanical properties of thermo plastic, thermosetting plastic and the process of making plastic products.
A presentation on topic Plastics ceramics and glass processing, the all content based on GTU syllabus And ideal for gtu students. The PPT contains videos for clear understanding of concept.
Plastic manufacturing "forming and shaping plastics"Ayush Mathur
how plastic products are manufactured?
what are the processes involved in manufacturing of these products?
what are the various machine tools used?
what are the various types of plastics and what is resin?
what are the diffrent steps in manufacturing?
Get all these answers in this presentation.
It is our pleasure to introduce our latest resource guide to help designers, engineers and purchasing professionals navigate the world of plastic injection molding. We think it is one of the most comprehensive of it's kind with 200+ terms included. You might find it helpful in training new employees to the industry or your company. Thank you for viewing, and please share it with others who might benefit!
Fabrication of Plastics in polymer technology for B.Tech students in India specially for JNTU K,H&A in Andhra Pradesh Telangana and also for other Indian Universities.
By
Gurram.Achyuth Kumar
A
http://www.spiratex.com/ : Understand the complete process of custom plastic extrusion with step by step details of the process through this presentation. It also explains the various specialized forms of plastic extrusions.
Lecture notes on Structure and Properties of Engineering Polymers
Course Objectives:
The main objective is to introduce polymers as an engineering material and emphasize the basic concepts of their nature, production and properties. Polymers are introduced at three levels; namely, the molecular level, the micro level, and macro-level. Through knowledge of all three levels, student can understand and predict the properties of various polymers and their performance in different products. The course also aims at introducing the students to the principles of polymer processing techniques and considerations of design using engineering polymers.
The Indian economy is classified into different sectors to simplify the analysis and understanding of economic activities. For Class 10, it's essential to grasp the sectors of the Indian economy, understand their characteristics, and recognize their importance. This guide will provide detailed notes on the Sectors of the Indian Economy Class 10, using specific long-tail keywords to enhance comprehension.
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What is the purpose of the Sabbath Law in the Torah. It is interesting to compare how the context of the law shifts from Exodus to Deuteronomy. Who gets to rest, and why?
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Students, digital devices and success - Andreas Schleicher - 27 May 2024..pptxEduSkills OECD
Andreas Schleicher presents at the OECD webinar ‘Digital devices in schools: detrimental distraction or secret to success?’ on 27 May 2024. The presentation was based on findings from PISA 2022 results and the webinar helped launch the PISA in Focus ‘Managing screen time: How to protect and equip students against distraction’ https://www.oecd-ilibrary.org/education/managing-screen-time_7c225af4-en and the OECD Education Policy Perspective ‘Students, digital devices and success’ can be found here - https://oe.cd/il/5yV
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
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This presentation provides a briefing on how to upload submissions and documents in Google Classroom. It was prepared as part of an orientation for new Sainik School in-service teacher trainees. As a training officer, my goal is to ensure that you are comfortable and proficient with this essential tool for managing assignments and fostering student engagement.
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”.
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
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.
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
4. INTRODUCTION
• Plastics are one of the polymeric materials and have extremely large
molecules.
• Consumer and industrial products made of polymers include food
and beverage containers, packaging, housewares, foams, toys etc.
• Polymers are formed by polymerization process.
• Polymerization processes are of complex nature and of two types
1) Condensation Polymerization 2) AdditionPolymerization
• Plastics ( polymers) are of two types :
Thermoplastics – Acetals, acrylics, polystyrene, polypropyleneetc.
Thermosetting plastic – Alkyds, aminos, epoxies, phenolicsetc.
5. Plastic is material consisting of any of a wide range of synthetic or semi-
synthetic organic compounds that are malleable and so can be molded into solid
objects.
Plastic moulding is the process of shaping plastic using a rigid frame or
mould.
The technique allows for the creation of objects of all shapes and sizes with
huge design flexibility for both simple and highly complex designs.
A popular manufacturing option, plastic moulding techniques are responsible
for many car parts, containers, signs and other high volume items.
The underlying concept of plastic moulding is placing liquid polymer into a
hollow mould so that the polymer can take its shape, often with various ranges of
pressure and heat required.
There are different plastic moulding techniques available to accomplish this
including rotational moulding, injection moulding, blow moulding, shell
moulding and compression moulding to name just a few.
Each technique has its benefits and is best suited for the creation of specific
items.
8. • It is a high pressure moldingoperation used for thermosettingplastics.
• Charge of thermosettingresin is placedin the die cavityof a matched mold.
• The moldis closed by bringing the two halvestogether.
• Pressureis exerted to squeeze the resin.
• Whileunder pressure the materialis heated,whichcauses it tocure and to harden.
• Whenthe materialwill becomehard, the mold is opened and the partis removed.
• Helmets,automobilebody panels etc.are someexamplesof compression moldedparts.
• Alsocalled as compressionpress
• Opening between base and compressionassembly
called as daylightopening.
• Slide rod guidesthe movementof compression assembly.
9. Working Principle:-
The charge of plastic material is
place in the lower half of a
heated mould cavity.
The mold cavity is closed with
upper movable half mold &
pressure is applied.
The pressure is applied along
with heat to compress the
material, which also increases
the polymerization process.
The mould cavity is then
openedand the final product
is take out.
10. • Polymeris heated to highly plastic state and forcedto flow underhigh
pressure into mold cavity,where itsolidifies.
• Molded part called ‘molding’ is removedfromcavity.
• Production cycle time is typically in range of 10 to 30sec.
• Part size range from 50 g to 25 kg and economical forlarge production quantities
only.
• Doors of refrigerator, buckets, automobile parts etc. aresome
examples of injection molding.
11. Working Principle:-
1. First, we auto loader the plastic material into the barrel, which is
surround by heating elements melting the plastic.
2. In the barrel which is assembled with servo motor screw. The plastic
melt will flow up the screw and under the heating condition get tight
and move forward to the screw head.
3. At the same time, due to the plastic reacting force, the screw will step
back. So at the screw head, it formed a plastic melt saving space to
finish its plasticizing process. Also under the injection hydraulic
cylinder force, the screws will injection the plasticizing melt into the
plastic mould through the nozzle. The plastic melt will remain in the
mould cavity through the holding pressure, cooling, process, and then
formed into solid shape ejected out of the mould.
12. • Plastic forming process suitable for manufacture of bottles and other simple
hollowparts.
• Three simple steps of blow molding
- Melting the resin
- Forming a preform tube
- Blowing the preform tube
• Melting and forming can be done either in an extruder or in an injection
moldingmachine.
• Cycle of blow molding are very short.
• Economically used for parts ranging from few ml to over 450 l involume
• Two types of blow molding processes are used
1) Extrusion blow molding
2) Injection blow molding
13. Working Principle:-
It is a process of shaping thermoplastic material into one piece,
hollow articles by means of heat & air pressure.
A hot thermoplastic tube known as parison is injected in mould
cavity. High pressure air in parison& it can be blow out to
acquired shape of die.
Then such shape cooling against mould wall, after product is
cooled the mould is opened & part is ejected.
14. It is also known as shell mould casting.
It is an expandable mold casting process that uses a
resin covered sand to form the mould.
As compared to sand casting, this is process has better
dimension accuracy, a higher productivity rate & lower
labour requirement.
16. WorkingPrinciple:-
This process employs the simultaneous rotation of thin walled mould about two axis, which is perpendicular to
each other. After being charged with plastic material the mould are heated externally while rotating, due to
particles melton the inner surface of mould.
Successively layers are deposited until all material are uniformly distributed &
fused, then mould cooledby air or spraying water while still rotating.
17. Nylon Very strong, nylon can be machined and will take a fine thread. It is also slippery and can be used to
make washers, spacers and bushes.
Nylon was originally developed as a textile but is available in many forms with vastly different
properties.
Acrylic Comes in a range of thicknesses, colours and can be opaque or transparent. There are two type of
acrylic extruded which is cheaper and very "plastic" and cast which machines better but is harder and
less flexible. Acrylics are available in a range of colours and can be opaque, translucent or
transparent. They are available in sheet, rod, and tube for use in injection moulding, extrusion and
vacuum forming.
PVC and
uPVC
Stiff, hard,tough lightweight plastic. uPVC is stabilised for outside use ans is uded for plastic
windows and plastic pipes. Plasticised PVC is used for flexible applications such as insulating -
cables.
Polythene This plastic has a range of uses from food packaging to gas pipes. The plastics can be injection
moulded or extruded and is available in two forms. High-density polyethylene (HDPE) is a hard
rigid plastic.Alow-density grade ( LDPE )is tough and flexible.
Polypropylen
e
Polypropylene is a tough, cheap plastic, it has a slightly waxy feel. It can be bent repeatedly without
breaking. Used for Medical equipment such as syringes, stacking chairs (chairshell is polypropylene),
suitcases with integral hinges,
Polycarbonate Used for making eye protection, machine guards and riot shields. It is not as hard as acrylic and can be
cut easily but it will absorb impacts.
Bakelite A thermosetting plastic. Dark brown. Used as a composite reinforced with paper or cloth. Usedto
make circuit boards and heat proof insulated parts in the electronicsindustry.
Epoxy resin A two part mix which can be used as a glue (ARALDITE) or be reinforced with carbon fibre to
produce a very strong and light composite materials which is used in aerospace and Formula 1
Melamine A thermoset very tough and heat resistant. White but can be produced in a full range ofcolours.