Design Tech- Plastics, Manufacturing Processes

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  • 1/11 Questions

    Which of the following can be used for injection moulding?

    • HDPE
    • Acrylic
    • PVC
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Plastic Quizzes & Trivia
About This Quiz

This quiz focuses on the application of various plastics in manufacturing processes like injection moulding, blow moulding, and vacuum forming. It assesses knowledge on suitable plastics such as HDPE, PS, PP, and Acrylic, highlighting their practical use in industry.

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  • 2. 

    Which of the following can be used for injection moulding?

    • PS

    • LDPE

    • Acrylic

    Correct Answer
    A. PS
    Explanation
    PS (Polystyrene) can be used for injection moulding. Injection moulding is a manufacturing process where molten material is injected into a mould to create a desired shape. PS is a thermoplastic polymer that can be easily melted and injected into a mould. It has good flow properties, low viscosity, and can be easily molded into complex shapes. PS is commonly used for producing a wide range of products through injection moulding, including packaging materials, toys, automotive parts, and consumer electronics. LDPE (Low-Density Polyethylene) and Acrylic are also used in various manufacturing processes, but they are not specifically mentioned as suitable for injection moulding.

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  • 3. 

    Which of the following can be used for blow moulding?

    • ABS

    • PP

    • Nylon

    Correct Answer
    A. PP
    Explanation
    PP, or polypropylene, can be used for blow moulding. Blow moulding is a manufacturing process used to create hollow plastic objects, such as bottles or containers. PP is a popular choice for blow moulding because it has good impact strength, chemical resistance, and can be easily molded into various shapes. Additionally, PP has a low melting point, which makes it suitable for the blow moulding process.

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  • 4. 

    Which of the following can be used for vacuum forming?

    • ABS

    • Acrylic

    • PP

    Correct Answer
    A. Acrylic
    Explanation
    Acrylic can be used for vacuum forming because it is a thermoplastic material that can be heated and molded into various shapes. It has good transparency, high impact resistance, and can maintain its shape even after cooling down. These properties make acrylic suitable for applications such as signage, display cases, and packaging. ABS and PP are also thermoplastics, but they may not have the same level of clarity and impact resistance as acrylic, making them less ideal for vacuum forming in certain cases.

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  • 5. 

    Select the plastics that can be used for Vaccum forming

    • HDPE

    • LDPE

    • PP

    • PS

    • Acrylic

    • PET

    • Nylon

    • ABS

    • PVC

    • HIPS

    Correct Answer(s)
    A. Acrylic
    A. PVC
    A. HIPS
    Explanation
    Acrylic, PVC, and HIPS are the plastics that can be used for vacuum forming. Vacuum forming is a process in which a plastic sheet is heated and then stretched over a mold using a vacuum to create a desired shape. These three plastics have properties that make them suitable for this process, such as good heat resistance, flexibility, and the ability to maintain their shape after cooling. HDPE, LDPE, PP, PS, PET, Nylon, and ABS may have other useful properties but are not typically used for vacuum forming.

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  • 6. 

    Select the plastics that can be used for injection moulding

    • HDPE

    • LDPE

    • PP

    • PS

    • Acrylic

    • PET

    • Nylon

    • ABS

    • PVC

    • HIPS

    Correct Answer(s)
    A. HDPE
    A. PP
    A. PS
    A. Nylon
    A. ABS
    Explanation
    The plastics that can be used for injection moulding are HDPE, PP, PS, Nylon, and ABS. These plastics have properties that make them suitable for the injection moulding process, such as good flowability, high melt strength, and good dimensional stability. They can be easily melted and injected into a mould, where they solidify and take the shape of the mould cavity. Other plastics like LDPE, Acrylic, PET, PVC, and HIPS may have different properties that make them unsuitable for injection moulding.

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  • 7. 

    Select the plastics that can be used for blow moulding

    • HDPE

    • LDPE

    • PP

    • PS

    • Acrylic

    • PET

    • Nylon

    • ABS

    • PVC

    • HIPS

    Correct Answer(s)
    A. HDPE
    A. LDPE
    A. PP
    A. PS
    A. PET
    A. PVC
    Explanation
    The plastics that can be used for blow molding are HDPE, LDPE, PP, PS, PET, and PVC. Blow molding is a manufacturing process used to create hollow plastic parts by inflating a heated plastic tube until it takes the shape of a mold. HDPE (High-Density Polyethylene), LDPE (Low-Density Polyethylene), PP (Polypropylene), PS (Polystyrene), PET (Polyethylene Terephthalate), and PVC (Polyvinyl Chloride) are all commonly used materials for blow molding due to their ability to be melted and shaped into various forms.

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  • 8. 

    What are the features of injection moulding

    • Fast

    • Can be labour intensive

    • Produces a good surface finish

    • Can be used for mass production

    • Is economical for one off production

    • Cost effective once the mould has been produced

    • Can produce high volumes of the product

    • Is suitable for batch production

    • Is flexible

    • Can produce complex shapes

    • Produces hollow shapes

    • Requires no further surface finishing

    • Corners of the product have little stress

    • The final product has no seams

    Correct Answer(s)
    A. Fast
    A. Produces a good surface finish
    A. Can be used for mass production
    A. Cost effective once the mould has been produced
    A. Can produce high volumes of the product
    A. Can produce complex shapes
    A. Requires no further surface finishing
    Explanation
    Injection moulding is a fast manufacturing process that can produce a high volume of products. It is cost-effective once the mould has been produced, making it suitable for mass production. The process also produces a good surface finish and can create complex shapes, including hollow ones. Additionally, injection moulding requires no further surface finishing, as the corners of the product have little stress and the final product has no seams.

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  • 9. 

    A mould for vacuum forming to produce a quality outcome needs to:

    • Have a high quality surface finish to give a good quality final product

    • Be big

    • Have shallow angles on it

    • Have draft angles to allow the release of the product

    • Shouldn't be too big to reduce the chance of webbing

    • Should be made from a material that is heat resistant

    • Should be made out of a material that can deform

    Correct Answer(s)
    A. Have a high quality surface finish to give a good quality final product
    A. Have draft angles to allow the release of the product
    A. Shouldn't be too big to reduce the chance of webbing
    A. Should be made from a material that is heat resistant
    Explanation
    A mould for vacuum forming needs to have a high quality surface finish to ensure that the final product is of good quality. It should also have draft angles to allow for the easy release of the product from the mould. The mould should not be too big to reduce the chance of webbing, which is the formation of thin strands of plastic. Additionally, the mould should be made from a material that is heat resistant to withstand the high temperatures involved in the vacuum forming process.

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  • 10. 

    A mould for sand casting to produce a quality outcome needs to:

    • Have a high quality surface finish to give a good quality final product

    • Be big

    • Be made from a porous material

    • Be very detailed

    • Have two halves

    • Be a negative of what the final product should be

    • Have two holes, the pouring basin, runner and riser

    Correct Answer(s)
    A. Have a high quality surface finish to give a good quality final product
    A. Have two halves
    A. Be a negative of what the final product should be
    A. Have two holes, the pouring basin, runner and riser
    Explanation
    A mould for sand casting needs to have a high quality surface finish in order to produce a good quality final product. It also needs to have two halves, which allows for easy removal of the casting. Additionally, the mould needs to be a negative of what the final product should be, as this allows for the correct shape and dimensions to be achieved. Finally, the mould needs to have two holes - the pouring basin, runner, and riser - to allow for the molten metal to be poured in and for any excess material to escape.

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  • 11. 

    RPT advantages

    • Allows the designer to interact with a product to inform him on design decisions

    • Allows the product to be made more ergonomically

    • It is cost effective compared to the effects of manufacturing an incorrect model

    • It is quick

    • It is cheaper than any other method of manufacturing

    • It allows products to be made interactively

    • Allows products to be printed directly from CAD

    • It is more accurate than any other way

    Correct Answer(s)
    A. Allows the designer to interact with a product to inform him on design decisions
    A. Allows the product to be made more ergonomically
    A. It is cost effective compared to the effects of manufacturing an incorrect model
    A. Allows products to be printed directly from CAD
    Explanation
    Rapid prototyping (RPT) allows the designer to interact with a product, providing valuable feedback and insights that inform design decisions. This helps in identifying any design flaws or improvements needed before the final production. RPT also allows the product to be made more ergonomically, ensuring it is comfortable and user-friendly. It is cost-effective as it helps avoid the expenses of manufacturing incorrect models, reducing waste and saving resources. RPT is quick, allowing for faster iterations and development cycles. It is cheaper than other manufacturing methods and allows products to be made interactively. Additionally, RPT enables direct printing from CAD, ensuring accuracy and precision in the final product.

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  • Current Version
  • Nov 01, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • May 11, 2011
    Quiz Created by
    William211

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