Processing Setup

 

Sheet Extrusion & In-Line Thermoforming Process

 

 Processing Parameter Units Typical Setting
Barrel Temperature    
   Feed Zone °F* 400-420
   Compression Zone °F 410-430
   Metering Zone °F 430-450
Adapter and Screen Changer ° 430-440
Die Temperature ° 450-480
Melt Temperature  ° 440-475
Chill Rolls  
   Top (T)  ° 150-160
   Center (C)  ° 160-175 
   Bottom (B)  ° 140-150
Thermoforming     
   Top Heater  ° 400-430 
   Bottom Heater  ° 400-435 
   Forming Temperature  ° 300-310 

* To convert temperature from Fahrenheit to Celsius (Temp°F-32)/1.8 = Temp°C

 

Injection Molding Process

Injection Molding Parameter  Units Typical Setting
Melt Temperature °F  450-460
   Nozzle  °F  440-450
   Adapter  °F  450-460
   Front  °F  450-470 
   Middle  °F  440-460 
   Rear  °F  430-450 
Hot Runner/Manifold Temperature  °F  380-420 
First or Boost Stage Injection     
   Time  sec  5-10 (less for smaller parts) 
   Pressure  psi  1,200-2.000 (max) 
Fill Speed:        
   First 10% of Shot  in/sec  1.5 
   Next 70% of Shot  in/sec  2.3 
   Last 20% of Shot  in/sec  1.2 
Packing Stage Time  sec  4-8 
Second or Hold Stage Injection     
   Time (with a packing stage)  sec  6-11 
   Time (without a packing stage)  sec  9-15 
   Pressure  psi  60% of max inj. pressure 
Cushion  in  0.25-0.50 (dependent on shot size) 
Screw Speed  rpm  60-100
Back Pressure  psi  50-200 
Mold Temperature  °F  70-120 (actual surface pyrometer reading) 
Clamp Pressure  tons/in2  2.2 (a) 
Drying Conditions    usually not required 
Purging Polyethylene (PE), polypropylene (PP) or standard purging compund 

 (a) 2.2 tons/in2 of projected mold area. This is dependant on wall thickness, flow distance and flow direction changes.

 

Before using this product, the user is advised and cautioned to make its own determination and assessment of the safety and suitability of the product for the specific use in question and is further advised against relying on the information contained herein as it may relate to any specific use or application. It is the ultimate responsibility of the user to ensure that the product is suited and the information is applicable to the user’s specific application.

Phillips 66 Company does not make, and expressly disclaims, all warranties, including warranties of merchantability or fitness for a particular purpose, regardless of whether oral or written, express or implied, or allegedly arising from any usage of any trade or from any course of dealing in connection with the use of the information contained herein or the product itself. The user expressly assumes all risk and liability, whether based in contract, tort or otherwise, in connection with the use of the information contained herein or the product itself. Further, information contained herein is given without reverence to any intellectual property issues, as well as federal, state or local laws which may be encountered in the use thereof. Such questions should be investigated by the user.

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