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Rotational Moulding Technology Hand Book

Rotational Moulding Technology Hand Book
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Price: Rs. 750.00
Availability: In Stock
ISBN Number: 9788189765255
Writer: EIRI Board
Average Rating: Not Rated

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The book covers Innovative Rotomoulding, Technology of Rotational Moulding, Rotational Moulding Process, Roto moulding Technology Details, Materials that can be Roto moulded, Roto moulding Machines, Design Consideration for Roto mould Containers, Rotational Moulding Process Control, Rotational Moulding of Nylons,  Moulds Fabrication for Roto moulding, Roto moulds for Cast Aluminium, Pin-holes and Bubbles in Roto moulded Products, Rotational Moulding of Liquid Polymers, Powdering Thermoplastic and Quality Consideration,  Plastic Water Storage Tanks (HDPE), Sintex Type, Suppliers of Plant and Machinery of Roto Moulding and Moulds. 


Innovative Rotomoulding

Technology of Rotational Moulding

  • Moulds
  • Types of moulds
  • Materials
  • Machines
  • Shuttle Machine
  • Carrousel
  • Rock and Roll
  • Product design
  • Design considerations
  • Parting Lines
  • Fill port for Loading
  • Drop Boxes
  • Shrinkage
  • Flatness and Stiffening
  • Radiuses and Angles
  • Venting
  • Wall Thickness
  • Spiders for Mounting
  • Recent improvements in rotational moulding
  • Quality control in rotational moulding
  • Coating and Release Systems
  • Advantages
  • Low Pressure Process
  • Unlimited Design Possibilities
  • Cost Savings
  • Rotational moulding vs blow moulding cost comparison
  • Shorter Production Times
  • Consistent Wall Thickness
  • Disadvantages
  • Applications
  • Transportation Products
  • Industrial and Commercial
  • Agricultural
  • Construction
  • Industrial Products
  • Marine Products
  • Playground Equipments
  • Recreational Products
  • Electrical/Electronics
  • Parts manufacturers using rotational moulding techniques
  • Little Tikes
  • Low and Bonar
  • Gallery of rotomoulding products
  • Toter
  • The Future of Rotational Moulding

Rotational Moulding Process

  • The process
  • Machine designs
  • Material mania
  • A Complete Life
  • Process set up
  • Design recommendations
  • Holes
  • Design of the ribs
  • Bosses
  • Kiss off
  • Wall Thickness
  • Flat Surfaces
  • Surface Finish
  • Tolerances Possible

Roto moulding Technology Details

  • Advantages of Rotomoulding
  • Disadvantages of Relational Moulding

Materials that can be Roto moulded

  • Characteristics of material for roto moulding
  • Polyolefins
  • Effects of increase in melt flow indecks
  • Vinyl plastics
  • Other plastics
  • Reactive materials
  • General information
  • Environmental Stress Cracking (ESC)

Roto moulding Machines

Design Consideration for Roto mould  Containers

  • Rotationally moulded plastic part design
  • Wall Thickness
  • Wall thickness Uniformity
  • Closely Spaced Parallel Walls
  • Warpage
  • Stiffening Ribs
  • Kiss-off Ribs
  • Draft Angles
  • Surface finish
  • Undercuts
  • Holes
  • Corner Radii
  • Tolerances

Rotational Moulding Process Control

  • Principles of process control
  • Effect of mould material
  • Effect of part thickness
  • Control of part properties
  • Impact strength
  • Bubble count
  • Processing advantages
  • Mould balancing
  • Additives
  • Machine Improvements
  • Quality control

Rotational Moulding of Nylons

  • Applications of nylon
  • Nylons suitable for rotomoulding and modifications
  • Machine considerations
  • Machine Type
  • Inert Gas Injection
  • Methods of Rotomoulding Using Nitrogen
  • Moulds and mould release coatings
  • Moulds
  • Mould release coatings
  • Moulding conditions
  • Charging the mould
  • Heating cycle
  • Cooling cycle
  • Properties of moulded nylons
  • Effect of plasticizer
  • Effect of moisture
  • Thermal considerations

Moulds Fabrication for Roto moulding

  • Complexity of form
  • Quantity of moulds required
  • The appearance of the product surface
  • The cost of the mould
  • Parting Line
  • Methods of Construction
  • Inserts
  • Special Features
  • Clamps and Clamping
  • Finish
  • Constructional features of the mould making
  • Parting Line
  • Method of Construction
  • Clamping
  • Inserts and cores
  • Fixed inserts
  • Interchangeable Inserts
  • Removable Inserts
  • Removable Threads
  • Incorrect Pitching
  • Thread shear
  • Distortion
  • Removable Handless
  • Moulded in Holes
  • Moulded in Inserts
  • Surface Finish
  • Special features
  • Heat Inducement
  • Heat exclusion
  • Kiss Points
  • Charge hoppers (Drop Box)
  • Venting
  • Mounting
  • Maintenance
  • Areas for Attention

Roto moulds for Cast Aluminium

  • Product design
  • The pattern
  • Mould design
  • Parting Lines
  • Removable Cores
  • Ribs or "Kiss-Off"
  • Moulded inserts
  • Surface finish
  • Number of pieces
  • Function and operation of mould
  • Farming
  • Spiders
  • Clamping devices
  • Heat transfer

Pin holes and Bubbles in Roto moulded Products

  • Bubble formation
  • The effect of the moulding material on bubbles
  • Melt Rheology
  • Viscosity reduction techniques
  • Powder characteristics
  • Mould considerations
  • Mould surface finish
  • Mould material
  • Mould Hot spots
  • Bubble removal using pressure
  • Pressurized rotational moulding
  • Mechanical properties
  • cycle time
  • Product thickness
  • Moulding material
  • Using pressure as a blowing agent
  • The use of a vacuum to remove bubbles
  • Effect of pressure and vacuum on the mould

Rotational Moulding of Liquid Polymers

  • Advantages to be gained when moulding liquid polymers
  • Materials for liquid polymers
  • Moulding equipments for rotomoulding liquid polymers
  • Material Handling
  • Moulds
  • Some recommendations for the rotational moulding of liquid Polymers

Powdering Thermoplastic and Quality Consideration

  • The quality of powder
  • Particle size and distribution test (ASTM D 1921)
  • Dry Flow Test (ASTM D 1895)
  • Builk density test (ASTM D 1895)
  • Characteristics and their effect on moulding
  • Particle size
  • Particle shape

Plastic Water Storage Tanks (HDPE) (Sintex Type)

  • High Density Polyethylene
  • Polypropylene
  • Poly Vinyl Chloride
  • Process of manufacture
  • Plant economics
  • Plant and Machinery
  • Fixed capital
  • Raw materials
  • Total working capital/month
  • Total capital investment
  • Turn over/annum

Suppliers of Plant and Machinery of Roto Moulding and Moulds

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