Plastics(srinivas)
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This document discusses different types of plastics used in manufacturing. It describes thermoplastics, which can be reshaped when heated, and thermosets, which cannot be reshaped once formed. Common thermoplastics used in injection molding include ABS and PETE. Injection molding involves injecting molten plastic into a mold cavity to form solid parts. Important considerations for plastic component design include adding ribs for stiffness and strength, designing bosses for mounting, and creating holes using core pins. Maintaining a uniform wall thickness can help avoid defects during the molding process. The document also outlines the SPI plastic identification coding system.
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The document discusses various plastic processing and manufacturing techniques. It begins by defining polymers and discussing the two types of polymerization - addition and condensation. It then covers classification of plastics based on their behavior when heated, structure, and physical/mechanical properties. Common plastic manufacturing processes like compression molding, transfer molding, and injection molding are explained along with their advantages and applications. Additives used in plastics and properties of plastics are also summarized.
Plastic Parts processing.pptx
This document provides information on various plastic processing and manufacturing techniques. It begins by defining polymers and discussing different types of polymerization. It then classifies plastics based on their behavior when heated, structure, and physical properties. Various plastic manufacturing processes are described such as compression molding, transfer molding, injection molding, extrusion molding, blow molding, calendaring, thermoforming, slush molding and laminating. Additives used in plastics and properties of plastics are also discussed.
Project Report File of Mouldflow Analysis
The document summarizes a student project on improving the quality of plastic injection mould design using mould flow analysis. It describes the objectives of designing and developing an automatic injection moulded product for a glass. Design concepts were developed in CATIA software and analyzed in Plastic Advisor/Pro-E software. The results revealed improvements in the quality of the mould design using concurrent engineering and computer-aided design approaches. The project aimed to improve the design of an existing product and its mould through mould flow analysis.
PLASTIC MOULDING and Methods involving in it
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
IRJET- Plastic Injection Moulding Machine
This document describes the development of a small plastic injection moulding machine for producing small plastic articles in small-scale industries. It discusses the design, construction, and testing of the machine. The machine is capable of injecting molten resins into a closed, cooled mould to produce plastic products. The design concept, operation, and assembly of component parts are covered. The document also provides details on the working principle of plastic injection moulding, including the various constructional parts of the machine like the PID controller, band heaters, thermocouple, and solid state relay. It discusses the assembly procedure and includes calculations and results from the first trial using polypropylene plastic.
IRJET- Plastic Injection Moulding Machine
This document describes the development of a small plastic injection moulding machine for producing small plastic articles in small-scale industries. It discusses the design, construction, and testing of the machine. The machine is capable of injecting molten resins into a closed, cooled mould to produce plastic products. The design concept, operation, and assembly of component parts are covered. The document also provides details on the working principle of plastic injection moulding machines in general and discusses the various constructional parts of the developed machine such as the PID controller, band heaters, thermocouple, and solid state relay.
Lecture 3_Dr Azlin.pptx
This document discusses various types of polymers and polymer processing techniques. It begins by defining polymers as substances made of repeating molecular units called mers. Polymers are classified as thermoplastics or thermosets depending on whether they can be remelted or undergo further chemical reactions. Common polymer processing techniques include extrusion, injection molding, blow molding, thermoforming, and composites fabrication. The document provides details on the basic mechanisms and applications of these important industrial polymer processes.
Acrylic Plastic (PMMA)
This document provides information about plastic and specifically polymethyl methacrylate (PMMA) or acrylic plastic. It discusses that plastics are polymers made from petroleum that can be molded into various shapes. It then describes the two main types of plastics - thermoplastics and thermoset plastics - and provides examples of each. The document also outlines various properties and uses of plastics in general and PMMA specifically, including in construction, lighting, automotive, electronics, furniture and more. However, it notes that PMMA has limitations such as poor impact resistance and chemical resistance and may cause side effects if used in medical applications.
Merged document 4
Ekeeda Provides Online Engineering Subjects Video Lectures and Tutorials of Mumbai University (MU) Courses. Visit us: https://ekeeda.com/streamdetails/University/Mumbai-University
1 high polymers and elastomers
Ekeeda Provides Online Engineering Subjects Video Lectures and Tutorials of Mumbai University (MU) Courses. Visit us: https://ekeeda.com/streamdetails/University/Mumbai-University
Material Technology. Chapter 6 - Plastic
This document defines plastics and their production processes. Plastics are polymers made from monomers and can be thermoplastics or thermosets. Thermoplastics soften when heated and can be remolded, while thermosets set during molding. Common plastics include polyethylene, polypropylene, polystyrene, and polyvinyl chloride. Plastics are produced via injection molding, extrusion, blow molding, and compression molding. Injection molding uses heated resin that is injected into a mold, while extrusion produces continuous shapes and blow molding uses air to expand parisons in a mold.
Plastic Processing
This document discusses various plastic processing techniques. It begins by defining polymers and plastics, noting that polymers are composed of repeating monomer units and occur naturally or can be synthetic. Plastics are typically organic polymers that can be molded. The document then discusses two main types of plastics - thermoplastics, which can be remelted and reshaped, and thermosetting plastics, which permanently set their shape after heating. It proceeds to describe several plastic processing methods like injection molding, compression molding, and extrusion.
Plastic
Plastics are polymeric materials that are lightweight, durable, and resistant to corrosion. They can be molded into various shapes and are used widely in engineering applications. Plastics are classified as thermoplastics, which soften when heated and harden when cooled, and thermoset plastics, which harden permanently after heating. Common plastics are made from polymers of materials like vinyl, polyester, and urethane. Plastics have properties like low weight and resistance to heat and electricity that make them useful for applications in industries like construction, automotive, and electronics manufacturing.
Know about injection moulding copy
The document provides information about plastic injection moulding. It defines plastic as a polymeric substance that can be easily shaped and moulded. Plastics are used for their ability to be formed into complex shapes, their light weight, strength and availability in different colors. The main types of plastics are thermoset and thermoplastic. Injection moulding is described as the process of injecting melted plastic into a mould to form a part. Key aspects of the injection moulding process like the machine, mould, raw materials and defects are discussed. Injection moulding is concluded to be a very versatile process for producing a wide variety of plastic products.
thermoforming (1).ppt
Thermoforming is a plastic sheet forming process where a plastic sheet is heated to a softening temperature and formed to a specific shape by applying vacuum or pressure. The key steps are heating the sheet, pressing it into or draping it over a mold using vacuum/pressure, then cooling it to retain the shape. Common materials are PS, ABS, PVC. Applications include food packaging, signs, electronics components. Molds can be plaster, wood, metal, or composite materials. Heating methods include convection ovens and infrared heating. Forming processes vary in how the sheet is formed against the mold, such as vacuum forming, pressure forming, plug-assist forming, and drape forming.
Plastic and their joining processes for different industrial uses
There are two major classifications of polymers: thermoplastics and thermosetting plastics. Thermoplastics can be remelted and reshaped upon heating, while thermosetting plastics set permanently and cannot be remelted upon heating. Plastics are widely used in cars, pipes, flooring, kitchen countertops, and tires due to their corrosion resistance, ability to be formed into complex shapes, variety of appearances and colors, and insulation properties. However, plastics also have disadvantages such as low strength, limited temperature range, potential brittleness over time, and sensitivity to the environment. Common joining methods for plastics include mechanical fasteners, adhesives, welding processes like ultrasonic welding
Similar to Plastics(srinivas) (20)
Plastic and their joining processes for different industrial uses
Plastic and their joining processes for different industrial uses
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【主营项目】
一.毕业证【q微741003700】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
二.真实使馆公证(即留学回国人员证明,不成功不收费)
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如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【q/微741003700】
◇面对父母的压力，希望尽快拿到；
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1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
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【业务选择办理准则】
一、工作未确定，回国需先给父母、亲戚朋友看下文凭的情况，办理一份就读学校的毕业证【微信：176555708】文凭即可
二、回国进私企、外企、自己做生意的情况，这些单位是不查询毕业证真伪的，而且国内没有渠道去查询国外文凭的真假，也不需要提供真实教育部认证。鉴于此，办理一份毕业证【微信：176555708】即可
三、进国企，银行，事业单位，考公务员等等，这些单位是必需要提供真实教育部认证的，办理教育部认证所需资料众多且烦琐，所有材料您都必须提供原件，我们凭借丰富的经验，快捷的绿色通道帮您快速整合材料，让您少走弯路。
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
→ 【关于价格问题（保证一手价格）
我们所定的价格是非常合理的，而且我们现在做得单子大多数都是代理和回头客户介绍的所以一般现在有新的单子 我给客户的都是第一手的代理价格，因为我想坦诚对待大家 不想跟大家在价格方面浪费时间
对于老客户或者被老客户介绍过来的朋友，我们都会适当给一些优惠。
选择实体注册公司办理，更放心，更安全！我们的承诺：可来公司面谈，可签订合同，会陪同客户一起到教育部认证窗口递交认证材料，客户在教育部官方认证查询网站查询到认证通过结果后付款，不成功不收费！
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Save them for later and save the trouble!
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【业务选择办理准则】
一、工作未确定，回国需先给父母、亲戚朋友看下文凭的情况，办理一份就读学校的毕业证【微信：176555708】文凭即可
二、回国进私企、外企、自己做生意的情况，这些单位是不查询毕业证真伪的，而且国内没有渠道去查询国外文凭的真假，也不需要提供真实教育部认证。鉴于此，办理一份毕业证【微信：176555708】即可
三、进国企，银行，事业单位，考公务员等等，这些单位是必需要提供真实教育部认证的，办理教育部认证所需资料众多且烦琐，所有材料您都必须提供原件，我们凭借丰富的经验，快捷的绿色通道帮您快速整合材料，让您少走弯路。
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
→ 【关于价格问题（保证一手价格）
我们所定的价格是非常合理的，而且我们现在做得单子大多数都是代理和回头客户介绍的所以一般现在有新的单子 我给客户的都是第一手的代理价格，因为我想坦诚对待大家 不想跟大家在价格方面浪费时间
对于老客户或者被老客户介绍过来的朋友，我们都会适当给一些优惠。
选择实体注册公司办理，更放心，更安全！我们的承诺：可来公司面谈，可签订合同，会陪同客户一起到教育部认证窗口递交认证材料，客户在教育部官方认证查询网站查询到认证通过结果后付款，不成功不收费！
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本公司拥有海外各大学样板无数，能完美还原。
1:1完美还原海外各大学毕业材料上的工艺：水印，阴影底纹，钢印LOGO烫金烫银，LOGO烫金烫银复合重叠。文字图案浮雕、激光镭射、紫外荧光、温感、复印防伪等防伪工艺。材料咨询办理、认证咨询办理请加学历顾问Q/微741003700
【主营项目】
一.毕业证【q微741003700】成绩单、使馆认证、教育部认证、雅思托福成绩单、学生卡等！
二.真实使馆公证(即留学回国人员证明,不成功不收费)
三.真实教育部学历学位认证（教育部存档！教育部留服网站永久可查）
四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
如果您处于以下几种情况：
◇在校期间，因各种原因未能顺利毕业……拿不到官方毕业证【q/微741003700】
◇面对父母的压力，希望尽快拿到；
◇不清楚认证流程以及材料该如何准备；
◇回国时间很长，忘记办理；
◇回国马上就要找工作，办给用人单位看；
◇企事业单位必须要求办理的
◇需要报考公务员、购买免税车、落转户口
◇申请留学生创业基金
留信网认证的作用:
1:该专业认证可证明留学生真实身份
2:同时对留学生所学专业登记给予评定
3:国家专业人才认证中心颁发入库证书
4:这个认证书并且可以归档倒地方
5:凡事获得留信网入网的信息将会逐步更新到个人身份内，将在公安局网内查询个人身份证信息后，同步读取人才网入库信息
6:个人职称评审加20分
7:个人信誉贷款加10分
8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
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At ASP Cranes, we understand the importance of reliable and efficient crane operations in various industries, from construction and manufacturing to logistics and infrastructure development. That's why we strive to deliver top-notch solutions that enhance productivity, safety, and cost-effectiveness for our clients.
Our services include:
Crane Rental: Whether you need a crawler crane for heavy lifting or a hydraulic crane for versatile operations, we have a diverse fleet of well-maintained cranes available for rent. Our rental options are flexible and can be customized to suit your project requirements.
Crane Sales: Looking to invest in a crane for your business? We offer a wide selection of new and used cranes from leading manufacturers, ensuring you find the perfect equipment to match your needs and budget.
Crane Maintenance and Repair: To ensure optimal performance and safety, regular maintenance and timely repairs are essential for cranes. Our team of skilled technicians provides comprehensive maintenance and repair services to keep your equipment running smoothly and minimize downtime.
Crane Operator Training: Proper training is crucial for safe and efficient crane operation. We offer specialized training programs conducted by certified instructors to equip operators with the skills and knowledge they need to handle cranes effectively.
Custom Solutions: We understand that every project is unique, which is why we offer custom crane solutions tailored to your specific requirements. Whether you need modifications, attachments, or specialized equipment, we can design and implement solutions that meet your needs.
At ASP Cranes, customer satisfaction is our top priority. We are dedicated to delivering reliable, cost-effective, and innovative crane solutions that exceed expectations. Contact us today to learn more about our services and how we can support your project in Raipur, Chhattisgarh, and beyond. Let ASP Cranes be your trusted partner for all your crane needs!
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Plastics(srinivas)
- 2. PLASTICS TYPES OF PLASTIC Classifications of plastics:- Thermoplastics A polymer that softens and melts gradually when heated and it can be reshaped when still warm. Thermo sets A polymer that can’t be reshaped after manufacture
- 3. WHY USE THERMOPLASTICS 1.Thermoplastics don’t release gases or water, vapour if they are correctly dried after they processing 2.The softening or melting by heating allows welding and thermoforming 3.The processing cycles are very short because of the absence of the chemical reaction of cross linking
- 6. INJECTION MOULDING What is Injection Moulding Injection moulding is a manufacturing process for making parts from thermoplastic materials Makes solid parts A part’s thickness is influenced by the mould and core relationship
- 8. TYPES OF INJECTION MOULDING 1. Reaction injection moulding:-A mixture of two to four components in the proper chemical ratio is accomplished by a high-pressure 2.Rapid injection moulding:-Rapid Injection Moulding allows us to make prototype injection moulded parts in a production thermoplastic 3. fusible core injection moulding:-it is used in the manufacture of moulded components with cavities or undercuts, which would not be possible with tools having demandable cores.
- 9. APPLICATIONS OF PLASTICS • Automobile Industry • Electrical Equipment's
- 10. • Shopping purpose • Packing Industry
- 11. • ABS is a terpolymer made by polymerizing styrene and acrylonitrile in the presence of polybutadiene. Acrilonitrile butadiene styrene
- 12. ADVANTAGES • High impact strength • Good stiffness • Good colourability • Excellent surface quality • High diamentional stability at elevated temperature • Good chemical resistance • Good stress cracking resistance
- 13. APPLICATIONS • Automobiles Radiator grills Head light housing Seat belt Water panels Helmets Wheel covers • Packaging Luggage cases Oil petrol ,kerosene containers
- 14. DRAFT ANGLE Draft Angle: Draft angle is the slant angle of a plastic part
- 16. IMPORTANT OF DRAFT ANGLE 1. The boundaries between mould parts become visible on the plastic part. 2. There will be flashes between the mould parts. 3.The heat regulation of the mould becomes difficult because separate cooling circuits are necessary for moving parts. Necessarily it is not always even possible.
- 17. DESIGN CONSIDERATIONS FOR PLASTIC COMPONENTS •When it comes to plastic product development, there are certain design aspects that are to be taken into consideration. 1. Ribs •Many times, product design specialists need to increase the stiffness of a particular component as it needs to withstand substantial load that is applied to its design
- 18. During plastic components designing there are many critical parameters that should be maintained, these could be the drafting angle, parting line, maintaining a uniform wall thickness and so on, so that by maintaining these parameters stress in mould, sink marks, warpage, and tolerances during the moulding of the part can be avoided. To maintain uniform thickness across the radius and horizontal & vertical walls To provide ribs to strengthen the boss To create ribs for uniform flow of mold and weight reduction
- 19. 2. Bosses Bosses are mainly used for mounting, locating and assembly purposes
- 20. 3. Holes Holes are usually made in the moulded parts. The core pins that are inserted into mould cavity give rise to the holes when that part gets moulded
- 21. DEFECTS GOING TO HAPPEN IF UNIFORM THICKNESS IS NOT MAINTENED
- 22. •Avoid designs with thin areas surrounded by thick perimeter sections as they are prone to gas entrapment problems •Maintain uniform nominal wall thickness •Avoid wall thickness variations that result in filling from thin to thick sections
- 24. THERMOPLASTICS TYPES SPI NUMBERS Today, manufacturers follow a coding system and place a number, or SPI code, on each plastic product, usually moulded into the bottom. SPI code of 1 PETE:- polyethylene terephthalate Items made from this plastic are commonly recycled. PETE plastic is used to make many common household items like beverage bottles, medicine jars, peanut butter jars, combs, bean bags, and rope. Recycled PETE is used
- 25. SPI code2: plastic made with high-density polyethylene, products are commonly recycled. Items made from this plastic include containers for milk, motor oil, shampoos and conditioners, soap bottles SPI code 3: made with low-density polyethylene, SPI code4: is made with polyvinyl chloridePVC is used for all kinds of pipes and tiles, but it's most commonly found in plumbing pipes. ,