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Molding (process)

 
Molding (process)

 
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Molding (process)
 
 
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Molding or moulding is the process of manufacturing
Manufacturing

Manufacturing is the use of machine, tool and labor to make things for use or sale. The term may refer to a range of human activity, from handicraft to high tech, but is most commonly applied to Industry production, in which raw material are transformed into finished good on a large scale....
 by shaping pliable raw material using a rigid frame or model called a pattern.

A mold or mould is a hollowed-out block that is filled with a liquid like plastic
Plastic

Plastic is the general common term for a wide range of synthetic or semisynthetic organic chemistry solid materials suitable for the manufacture of industrial products....
, glass
Glass

Glass generally refers to a Hardness, brittle, transparency amorphous solid, such as that used for windows, many Glass Bottles, or eyewear, including, but not limited to, soda-lime glass, borosilicate glass, acrylic glass, sugar glass, Muscovite , or aluminium oxynitride....
, metal
Metal

In chemistry, a metal is a chemical element whose atoms readily lose electrons to form positive ions , and form metallic bonds between other metal atoms and ionic bonds between nonmetal atoms....
, or ceramic raw materials
Ceramic

File:Bridge from dental porcelain.jpgFile:Qing vase p1070256.jpgA ceramic is an inorganic, nonmetal solid prepared by the action of heat and subsequent cooling....
.






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Bronze Spearhead Mold
Molding or moulding is the process of manufacturing
Manufacturing

Manufacturing is the use of machine, tool and labor to make things for use or sale. The term may refer to a range of human activity, from handicraft to high tech, but is most commonly applied to Industry production, in which raw material are transformed into finished good on a large scale....
 by shaping pliable raw material using a rigid frame or model called a pattern.

A mold or mould is a hollowed-out block that is filled with a liquid like plastic
Plastic

Plastic is the general common term for a wide range of synthetic or semisynthetic organic chemistry solid materials suitable for the manufacture of industrial products....
, glass
Glass

Glass generally refers to a Hardness, brittle, transparency amorphous solid, such as that used for windows, many Glass Bottles, or eyewear, including, but not limited to, soda-lime glass, borosilicate glass, acrylic glass, sugar glass, Muscovite , or aluminium oxynitride....
, metal
Metal

In chemistry, a metal is a chemical element whose atoms readily lose electrons to form positive ions , and form metallic bonds between other metal atoms and ionic bonds between nonmetal atoms....
, or ceramic raw materials
Ceramic

File:Bridge from dental porcelain.jpgFile:Qing vase p1070256.jpgA ceramic is an inorganic, nonmetal solid prepared by the action of heat and subsequent cooling....
. The liquid hardens or sets inside the mold, adopting its shape. A mold is the opposite of a cast
Casting

In metalworking, casting involves pouring a liquid metal into a Mold_, which contains a hollow cavity of the desired shape, and then is allowed to solidify....
. The manufacturer who makes the molds is called the moldmaker
Moldmaker

Moldmaker is the designation for a profession in the metalworking and ceramics industry. It is a variety of the profession of the toolmaker. The moldmaker produces Molding s for the injection molding , die casting and ceramics industries....
. A release agent
Release agent

A release agent is a chemical used to get a slip effect. It can provide a solution in processes involving Mould release, Die casting release, plastic release, and tire and Web release....
 is typically used to make removal of the hardened/set substance from the mold easier.

Types of molding include:

  • Compaction plus sintering
    Sintering

    Sintering is a method for making objects from Powder , by heating the material below its melting point until its particles adhesion to each other....
  • Injection molding
    • Reaction injection molding
      Reaction injection molding

      Reaction injection molding is similar to injection molding except that a reaction occurs within the mold. The process uses thermoset polymers instead of thermoplastic polymers used in standard injection molding....
  • Compression molding
    Compression molding

    Compression molding is a method of molding in which the molding material, generally preheated, is first placed in an open, heated mold cavity. The mold is closed with a top force or plug member, pressure is applied to force the material into contact with all mold areas, while heat and pressure are maintained until the molding material has cur...
  • Transfer molding
    Transfer molding

    Transfer molding, like compression molding, is a process where the amount of molding material is measured and inserted before the molding takes place....
  • Extrusion molding
  • Blow molding
    Blow molding

    Blow molding, also known as blow forming, is a manufacturing process by which hollow plastic parts are formed. It is a process used to produce hollow objects from thermoplastic....
  • Rotational molding
    Rotational molding

    Rotational Molding or moulding is a versatile process for creating many kinds of mostly hollow plastic parts. The phrase is often shortened to rotomolding or rotomoulding....
  • Thermoforming
    Thermoforming

    Thermoforming is a manufacturing process where plastic sheet is heated to a pliable forming temperature, formed to a specific part shape in a mold, and trimmed to create a usable product....
    • Vacuum forming
      Vacuum forming

      Vacuum forming, commonly known as vacuforming, is a simplified version of thermoforming, whereby a sheet of plastic is heated to a forming temperature, stretched onto or into a single-surface molding , and held against the mold by applying vacuum between the mold surface and the sheet....
      , a simplified version of thermoforming
  • Laminating
  • Expandable bead molding
  • Foam molding
  • Rotomolding
  • Vacuum plug assist molding
  • Pressure plug assist molding
  • Matched mold


Image:Injection molding die side A.JPG|"A" side of die for 25% glass-filled acetal with 2 side pulls. Image:Injection molding die with insert.JPG|Close up of removable insert in "A" side. Image:Injection molding die B side.JPG|"B" side of die with side pull actuators. Image:Injection molding die insert.JPG|Insert removed from die.