15" light small tweeter hand lay up glass fiber speaker grill box cover

Specifications

High Strength,Light weight
accurate dimensions
Can be produced by Hand Lay up or Compression molding
OEM and ODD are welcome

15" Tweeter Hand Lay Up Glass Fiber Speaker Grill Box Cover

 

Produced via Fiberglass Compression Molding(SMC) or Hand Lay Up

Properties of Fiberglass Sheet:

 Fiberglass Compression Molding Process:

Description of Fiberglass Compression Molding:

        The SMC-process is the most important process technology for fiber reinforced polymers today. It is characterized by the flow behaviour of the semifinished flat SMC-sheet under heat and pressure in the press mould - a kind of press-flow-forming technique. The SMC-sheet is built up continuously from short fiber (20 -50 mm) or endless-fiber mats impregnated with a filled resin system. After finishing the "SMC-sheet" it will be stored for several days to reach the adequate consistancy.

       According to the shape of the structure, or the part, the SMC-sheet will be cut roughly to the geometrical dimensions (regarding the weight of the finished part - not the volume!). Positioing the sheet in a heated mould (constant temperature) the uncured matrix system will drop its viscosity. Under the pressure of the press the system will flow to fill the complete mould (near net shape). In parallel the curing process is starting and after a short time the cured part will be demoulded and trimmed for the final shape.As to be seen the process technique is automized to a rather high degree today and can be used for mass production (automotive industry).

       For series production the moulds are metal (mainly steel) dies which are heated with steam to temperatures around 120° C to reduce the curing time.

       Adding polymer particles which are expanding during the heating process the shrinkage of the matrix nearly can be equalized - called "low profile"-systems - for flat and dimensional stable structures.

 

Application of Fiberglass Compression Molding:

Construction Parts

Industrial Parts

Non Flammable Parts

Electric&Electronic Parts

Chemical Resistance Parts

Automobile Parts

Fiberglass Hand Lay up Process