Task $9$:

$1-$ Categorize the following items to the corresponding molding method: Extrusion molding,

compression molding, blow molding, injection molding, or rotational molding.

a$)$ PVC Pipe

b$)$ Car Bumper

c$)$ Bottle

d$)$ Cable Tray

In your own words, discuss the methodology of each molding type $($Extrusion

molding, compression molding, blow molding, injection molding, or rotational molding$).$

Three lines each minimum.