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8/12/2019 008 - Vacuum Forming Process for KYDEX Parts
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VACUUM FORMINGPROCESS FOR
KYDEX PARTS
Prepared By
A.S.DESHMUKH
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KYDEXPROPERTIES
Formability :Excellent forming properties, easy machining andfabricating using conventional methods, furtherexpanding finished part possibilities.
For deep or hard to form parts or where good finisheddetail is required. KYDEX is unsurpassed.
Rigidity:KYDEX is more rigid than most other thermoplasticsresulting in parts that will deform less when loaded.
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KYDEX PART TO BE MANUFACTURE
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Kydex Sheet Wooden Frame
Need to clamp Kydex sheet between wooden frame withthe help of clamps as shown in snap.
Clamp
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Heaters are generally infra-red elements mounted within an aluminum reflector plate.In order to obtain the best vacuum forming results, it is essential that the sheet isheated uniformly over its entire surface area and throughout its thickness and reachthe Forming Temp or ( Plastic State). In order to achieve this it is necessary to have aseries of zones which are controlled by energy regulators.
Heating Temp.- Between 400 to 430F
Heating Time- 4 min
Heating of Kydex Sheet
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Vent Holes for evacuating air to creating Vacuum
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Forming Tool with Vacuum attachment
Forming Tool
VacuumChamber
VacuumAttachment:
Which suck airfrom vacuumchamber through
PVC connectingpipe
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Another Example
Forming Tool Kydex Part
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Forming Tool Kydex Part
Another Example
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Another Example
Forming Tool Forming Tool
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Setup while Vacuum forming For Ex.-
Kydex Heated sheet
Clamp
FormingTool
Vacuum
Chamber
Air Evacuatedto suckingKydex ontoForming Tool
Air betweenKydexsheet andTool
surface
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After Vacuum Forming
For Ex.-
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Hear we can see the part surface is not smooth, Excess material is formed on part surface, which iscalled Webbing.
As in this part that portion will be cut in final trimming no need to bother about that.
But if we want to avoid Webbing then female part of forming tool is required and need to match withmale part while vacuum forming.
For Ex.-
Excess Material (Webbing)
Forming Tool (Male)
Forming Tool (Female)
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For Ex.
Forming Tool (Male)
Forming Tool (Female)
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COOLING Once formed the Kydex must be allowed to cool before being released. Ifreleased too soon then deformation of the moldings will result in areject part.
For speed up the cooling cycle air flow is required.
Air Gun
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Formed Part Before Trimming
For Ex.-
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Part After Rough Trimming
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Finish trimming is required as per Drawing with the help
of jig & Fixture on Vertical or horizontal Saw M/c, CNC orHand Router.
Hand Router
For Ex.-
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