Encapsulation process in injection molding

Encapsulation process or glass encapsulation.

Encapsulation process is the process to adding the plastic on glass periphery. In other way ,glass used like as insert in mould & inject the material through the injection molding machine.

Glass to PVC adhesion.

We use solution of primer for adhesion of glass to PVC Which is 1500A,1500B&MEK

Glass to TPV adhesion.

 we use  solution of  primer for  adhesion of glass & TPV-

   1680A +1680 B+1680 C

Procedure 

before encapsulation  we need to  apply the primer on glass then it goes in dryer after drying  it ready  for  use as insert  in mould ,and also use child parts as per requirement and start the injection .after injection do the inspection  & it need to trimming  means de flashing & inspection after inspection  it will dispatch .

Injection moulding history and type

                                        INJECTION MOULDING

*Historical Background
* A single-action hydraulic injection machine was designed in the U.S.A.
in 1870 by Hyatt
*Heating-cylinder design was first recognised in a patent issued to Adam
Gastron in 1932.
*Large-scale development of injection moulding machinery design
towards the machines we know today did not occur until the 1950's in
Germany
           @ InjectionMouldingProcess
– Over View
Solid Wide neck, Flat Product is made like bucket, cabinets, Automobile &
Industrial parts etc…. by injecting molten thermoplastic material in to a
closed mould which is relatively cool.

*Type of Injection Moulding Machine

* Hand Injection Moulding M/C
* Plunger type Injection Moulding M/C
*Reciprocating Screw Type Injection Moulding M/C

                          @Hand Injection Moulding Machine

vertical machine consists of Barrel, Plunger, Band Heaters along with energy
regulator, Rack & Pinion system for Injecting the material by the plunger, a
torpedo and nozzle.

 Plunger Type Injection 

Moulding Machine
Vertical & Horizontal Plunger Type Injection Moulding Machine

 The Reciprocating Screw

 The feeding zone
 The compressing (or transition) zone
 The metering zone