a RIM molded part being sanded by hand

Process Comparison

Below are considerations that must be evaluated when making a molding technology decision for production. There are many factors (design intent, cost, functionality, quality) that need to be balanced when determining the most economic and qualitative method to mold your plastic application.

 

Your final technology choice will be based on annual volume of parts to be made, part size, tooling investment available, the parts physical properties, design factors needed and available lead times. Contact Thieme Corporation to assist in understanding the advantages, benefits and economics of making the RIM molding choice for your next product application. Thieme will guide you through evaluating RIM for the entire process from part concept to final assembly logistics on your plant floor for your next plastic application.

RIM

Injection

Thermo / Pressure

FRP

Structural

Sheet

RIM

Injection

Thermo / Pressure

FRP

Structural

Sheet

Process

Comparison Metric
Molding
Molding
Forming
Fiberglass
Foam
Metal
Low to Medium Annual Production Runs
Mold Large Parts (Single Shot)
Complex 3-D Geometries
Limited
Deep Draws
Yes w/ Limits
Mold In Features (ribs, holes, slots)
W/ Limitations
Self Supporting Structural Parts
Variable Wall Sections In The Same Part
Yes W/ Limitations
Limited (Cost to Machine)
Repeatability/Reliability
Limited
Encapsulation (electronics, metals, plastics)
Limited
Limited (Manual)
Design For Both A & B sides of Part
Multiple Material Solutions
Limited
Hold Tight Tolerances
Cost of Tooling
$$$
$$$$$
$$
$
$$$$
N/A
Tool Change Ease
Good
Limited
Limited
Limited (Manual)
Fair
N/A
Tool Life
Guaranteed for series production
Limited
Limited
Good
N/A
Prototype & Production As One Tool
Strength to Weight Ratio
Avg
Surface Quality & Paint
Yes w/ Limits Needs Paint
w/ Limits Needs Paint
Yes w/ Limits Needs Paint
Part Consolidation Possibilities
Limited
Limited
Eliminates Glued Inserts , Bosses, Assembly Aides
Limited

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