2.1. Theoretical Background
2.2. Material Selection Material selection plays an important role as the humidifier has to deal with a pressure of 2 Bar and temperature ranging from ambient to 90oC (maximum) and have to bare a load of 80 Newton. Simultaneously it should be lighter than aluminum and should be cheaper and fabricating time should be less and it should be capable of mass production and before all this it should serve the purpose. when developing plastic parts. Selection of an appropriate plastic material is vital in product development since the properties of the plastic are closely tied not only to the product design but also to the mold designs and process optimization. Inappropriate material selection may incur severe costs …show more content…
ethylene. Depending on the mode of polymerization, three basic types of polyethylene are frequently used: linear High-Density Polyethylene (HDPE), and Linear Low-Density Polyethylene (LLDPE), Low Density Polyethylene (LDPE). HDPE has a low degree of branching and thus greater intermolecular forces and tensile strength. It can be produced by chromium/ silica catalysts, Ziegler-Natta catalysts or metallocene catalysts. HDPE is used in products such as home appliances, milk jugs, detergent bottles, margarine tubs, garbage containers, toys and water pipes, in packaging and in automotive …show more content…
While there are many types of plastics manufacturing systems [12], four of the most common are extrusion, injection molding, blow molding, and thermoforming. Together with roto- molding, these five plastics conversion processes accounted for sales in the United States of over 94 billion dollars in 2007 [13]; global sales of plastics products is several multi- ples higher [14].
2.6 Method of Joining Bottom Plate And Humidifier Core
Bottom plate which is fabricated with XLPE has to be joined to core and core has to be joined to top plate in aluminium prototype these are joined by arc welding process but when polyethylene is used arc welding cannot be done instead induction welding can be carried out.
2.7 Induction Welding Using the principles of inductive heating to create fusion temperatures in a joint area, electromagnetic welding creates excellent hermetic or high-pressure seals. This process requires bonding material, usually supplied as extruded profiles such as strands (beads), tape or sheet, or special injection-moulded profiles conforming to a particular joint
2.2. Material Selection Material selection plays an important role as the humidifier has to deal with a pressure of 2 Bar and temperature ranging from ambient to 90oC (maximum) and have to bare a load of 80 Newton. Simultaneously it should be lighter than aluminum and should be cheaper and fabricating time should be less and it should be capable of mass production and before all this it should serve the purpose. when developing plastic parts. Selection of an appropriate plastic material is vital in product development since the properties of the plastic are closely tied not only to the product design but also to the mold designs and process optimization. Inappropriate material selection may incur severe costs …show more content…
ethylene. Depending on the mode of polymerization, three basic types of polyethylene are frequently used: linear High-Density Polyethylene (HDPE), and Linear Low-Density Polyethylene (LLDPE), Low Density Polyethylene (LDPE). HDPE has a low degree of branching and thus greater intermolecular forces and tensile strength. It can be produced by chromium/ silica catalysts, Ziegler-Natta catalysts or metallocene catalysts. HDPE is used in products such as home appliances, milk jugs, detergent bottles, margarine tubs, garbage containers, toys and water pipes, in packaging and in automotive …show more content…
While there are many types of plastics manufacturing systems [12], four of the most common are extrusion, injection molding, blow molding, and thermoforming. Together with roto- molding, these five plastics conversion processes accounted for sales in the United States of over 94 billion dollars in 2007 [13]; global sales of plastics products is several multi- ples higher [14].
2.6 Method of Joining Bottom Plate And Humidifier Core
Bottom plate which is fabricated with XLPE has to be joined to core and core has to be joined to top plate in aluminium prototype these are joined by arc welding process but when polyethylene is used arc welding cannot be done instead induction welding can be carried out.
2.7 Induction Welding Using the principles of inductive heating to create fusion temperatures in a joint area, electromagnetic welding creates excellent hermetic or high-pressure seals. This process requires bonding material, usually supplied as extruded profiles such as strands (beads), tape or sheet, or special injection-moulded profiles conforming to a particular joint