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Match the Product with the most appropriate Processing Technique employed.

ProductProcessing Technique
PRainboots1Blow molding
QDisposable plastic cups2Calendering
RSoft drink bottles3Rotational molding
SFlexible films4Thermoforming

  • A.P-3; Q-1; R-2; S-4
  • B.P-3; Q-4; R-1; S-2
  • C.P-1; Q-2; R-4; S-3
  • D.P-1; Q-3; R-4; S-2

Answer: B

The match is P-3; Q-4; R-1; S-2.

  • Rainboots, hollow one-piece products, are made by rotational molding, in which powder tumbles inside a heated rotating mould and coats its walls.
  • Disposable plastic cups are formed from heated sheet drawn into a cup-shaped mould: thermoforming.
  • Soft drink bottles are made by blow molding, inflating a preform against the mould.
  • Flexible films and sheets are produced by calendering, squeezing the melt between heated rolls.

The other options misplace at least one product: blow molding cannot make an open cup, and calendering makes flat film, not bottles or boots.

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