What is compression molding?


Compression molding is a molding process during which resin is placed between two dies of a mold and subjected to pressure and heat to create a finished part. The process uses thermosetting resins in a partially cured stage, either in the form of granules, putty-like masses or preforms.

According to About.com, it is a method of molding in which the molding material, largely preheated, is first placed in an open, heated mold cavity. The mold is closed with a top force or plug member, pressure is applied to force the material into contact with all mold areas. Heat and pressure are maintained until the molding material has cured. Compression molding is a high-volume, high-pressure method suitable for molding complex, high-strength fiberglass reinforcements. The advantage of compression molding is its ability to mold large, fairly elaborate parts. Also, it is one of the least expensive molding methods compared to other methods such as transfer molding and injection molding. Compression molding produces fewer knit lines and less fiber-length degradation than injection molding. It is also suitable for ultra-large basic shape production in sizes beyond the capacity of extrusion in techniques. It was first developed to manufacture composite parts for metal replacement applications.

Q&A Related to "What is compression molding?"
Compression molding usually functions by applying heat to a material that becomes malleable when hot, then pressing it into shape. These materials are known as thermosetting plastics
Not high in fact very low.
As you did not specified your peroxide type and EPDM filler, I am guessing that is DCP and try that: 1) If is black the typical cure until 5 mm is 7 minutes at 170ºC, in this
I'm thinking more than two. Any molding(or moulding) process requires 1: the correct chemistry of the material going in without contamination 2: Correct pressure 3: Correct temperature
1 Additional Answer
Ask.com Answer for: what is compression moulding
What Is Compression Moulding?
Compression molding is a simple and cost effective way to manufacture many large parts, especially for the automotive industry. It is similar to many other forms of molding parts in its processes and end result, but it is particularly useful for specific... More »
Difficulty: Easy
Source: www.ehow.com
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