Drying Temperatures

<body topmargin=0 leftmargin=0 marginheight=0 marginwidth=0> <table cellpadding=0 cellspacing=0 border=0><tr> <td valign="top" colspan=2 height=100 BGCOLOR="#CCCCFF" TEXT="#080000" bgproperties="fixed" background="0e394943.jpg"> <div> <B>Plastics 101</B><B> </B><FONT SIZE="1" COLOR="#555555" FACE="Arial" ><B>    |     </B><A HREF="index.htm" TARGET="_top" TITLE="Plastics 101"><U><B>home</B></U></A></FONT></div> <div> <A HREF="id80.htm" TARGET="_top" TITLE="Typical Vent Depths"><U>Typical Vent Depths</U></A>   |   <A HREF="id79.htm" TARGET="_top" TITLE="Recommended Mold Temperatures"><U>Recommended Mold Temperatures</U></A>   |   <A HREF="id82.htm" TARGET="_top" TITLE="Flow Ratios"><U>Flow Ratios</U></A>   |   <A HREF="id83.htm" TARGET="_top" TITLE="Specific Gravity"><U>Specific Gravity</U></A>   |   Drying Temperatures</div> <div> <B><IMG SRC="0eee80a0.jpg" border=0 width="1000" height="10" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></B></div> <div> </div> </td> </tr><tr> <td valign="top" width=200 BGCOLOR="#660000" TEXT="#F7F7FF"> <div> <B><IMG BORDER="0" SRC="Wing0a7300a80168ffffff00.png" HEIGHT="24" WIDTH="24" ALIGN="bottom" HSPACE="0" VSPACE="0">Tech Tips</B></div> <bR> </td> <td valign="top" height=380 BGCOLOR="#FFFFFF" TEXT="#080000" bgproperties="fixed" background="0e394943.jpg"> <bR> <div> <I>Drying Temperatures</I></div> <div> <TABLE BORDER="2" CELLPADDING="2" CELLSPACING="1" WIDTH="543" BORDERCOLORLIGHT="#C0C0C0" BORDERCOLORDARK="#808080" FRAME="BOX" RULES="ALL" HSPACE="0" VSPACE="0" > <tR> <tD VALIGN=CENTER HEIGHT= 16 WIDTH="163"><div> <I><B>Resin</B></I></div> </tD> <tD VALIGN=TOP><NOBR><div> <I><B>Hygroscopic</B></I></div> </NOBR></tD> <tD VALIGN=CENTER><NOBR><div> <I><B>Drying, hrs.</B></I></div> </NOBR></tD> <tD VALIGN=TOP WIDTH="151"><div> <I><B>Temp, °C (°F)</B></I></div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 16 WIDTH="163"><div> ABS</div> </tD> <tD VALIGN=TOP WIDTH="99"><div> Yes</div> </tD> <tD VALIGN=TOP WIDTH="97"><div> 2 to 3</div> </tD> <tD VALIGN=TOP><NOBR><div> 90 to 95 (190 to 200)</div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 16 WIDTH="163"><div> ABS/PC</div> </tD> <tD VALIGN=TOP WIDTH="99"><div> Yes</div> </tD> <tD VALIGN=TOP WIDTH="97"><div> 4 to 5</div> </tD> <tD VALIGN=TOP><NOBR><div> 105 to 110 (220 to 230)</div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 16 WIDTH="163"><div> ABS/PVC</div> </tD> <tD VALIGN=TOP WIDTH="99"><div> Yes</div> </tD> <tD VALIGN=TOP WIDTH="97"><div> 2 to 3</div> </tD> <tD VALIGN=TOP><NOBR><div> 70 to 75 (160 to 170)</div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 16 WIDTH="163"><div> Acetal (copolymer)</div> </tD> <tD VALIGN=TOP WIDTH="99"><div> Yes</div> </tD> <tD VALIGN=TOP WIDTH="97"><div> 2 to 3</div> </tD> <tD VALIGN=TOP><NOBR><div> 95 to 105 (200 to 220)</div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 16 ><NOBR><div> Acetal (homopolymer)</div> </NOBR></tD> <tD VALIGN=TOP WIDTH="99"><div> No</div> </tD> <tD VALIGN=TOP WIDTH="97"><div> 1 to 2</div> </tD> <tD VALIGN=TOP><NOBR><div> 95 to 105 (200 to 220)</div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 16 WIDTH="163"><div> Acrylic</div> </tD> <tD VALIGN=TOP WIDTH="99"><div> Yes</div> </tD> <tD VALIGN=TOP WIDTH="97"><div> 2 to 3</div> </tD> <tD VALIGN=TOP><NOBR><div> 75 to 90 (170 to 190)</div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 16 WIDTH="163"><div> Acetate (butyrate)</div> </tD> <tD VALIGN=TOP WIDTH="99"><div> Yes</div> </tD> <tD VALIGN=TOP WIDTH="97"><div> 2 to 3</div> </tD> <tD VALIGN=TOP><NOBR><div> 70 to 80 (160 to 180)</div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 16 WIDTH="163"><div> Acetate</div> </tD> <tD VALIGN=TOP WIDTH="99"><div> Yes</div> </tD> <tD VALIGN=TOP WIDTH="97"><div> 2 to 3</div> </tD> <tD VALIGN=TOP><NOBR><div> 70 to 80 (160 to 180)</div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 16 WIDTH="163"><div> HDPE</div> </tD> <tD VALIGN=TOP WIDTH="99"><div> No</div> </tD> <tD VALIGN=TOP WIDTH="97"><div>  1 to 2</div> </tD> <tD VALIGN=TOP><NOBR><div> 70 to 80 (160 to 180)</div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 16 ><NOBR><div> HDPE (3% carbon black)</div> </NOBR></tD> <tD VALIGN=TOP WIDTH="99"><div> Yes</div> </tD> <tD VALIGN=TOP WIDTH="97"><div>  3 to 4</div> </tD> <tD VALIGN=TOP><NOBR><div> 70 to 180 (160 to 180)</div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 16 ><NOBR><div> HDPE (40% carbon black)</div> </NOBR></tD> <tD VALIGN=TOP WIDTH="99"><div> Yes</div> </tD> <tD VALIGN=TOP WIDTH="97"><div> 4 to 5</div> </tD> <tD VALIGN=TOP><NOBR><div> 70 to 80 (160 to 180)</div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 16 WIDTH="163"><div> LCP</div> </tD> <tD VALIGN=TOP WIDTH="99"><div> Yes</div> </tD> <tD VALIGN=TOP WIDTH="97"><div> 3 to 4</div> </tD> <tD VALIGN=TOP><NOBR><div> 150 to 155 (300 to 310)</div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 16 WIDTH="163"><div> LDPE</div> </tD> <tD VALIGN=TOP WIDTH="99"><div> No</div> </tD> <tD VALIGN=TOP WIDTH="97"><div> 1 to 2</div> </tD> <tD VALIGN=TOP><NOBR><div> 70 to 80 (160 to 180)</div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 16 WIDTH="163"><div> Nitrile</div> </tD> <tD VALIGN=TOP WIDTH="99"><div> Yes</div> </tD> <tD VALIGN=TOP WIDTH="97"><div> 5 to 6</div> </tD> <tD VALIGN=TOP><NOBR><div> 70 to 80 (160 to 180)</div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 16 WIDTH="163"><div> Nylon 6, 6/6, 12</div> </tD> <tD VALIGN=TOP WIDTH="99"><div> Yes</div> </tD> <tD VALIGN=TOP WIDTH="97"><div> 5 to 6</div> </tD> <tD VALIGN=TOP><NOBR><div> 70 to 80 (160 to 180)</div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 16 WIDTH="163"><div> Nylon (transparent)</div> </tD> <tD VALIGN=TOP WIDTH="99"><div> Yes</div> </tD> <tD VALIGN=TOP WIDTH="97"><div> 4 to 5</div> </tD> <tD VALIGN=TOP><NOBR><div> 80 to 90 (180 to 190)</div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 16 WIDTH="163"><div> PET</div> </tD> <tD VALIGN=TOP WIDTH="99"><div> Yes</div> </tD> <tD VALIGN=TOP WIDTH="97"><div> 2 to 3</div> </tD> <tD VALIGN=TOP><NOBR><div> 120 to 130 (250 to 270)</div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 16 WIDTH="163"><div> PET/PET</div> </tD> <tD VALIGN=TOP WIDTH="99"><div> Yes</div> </tD> <tD VALIGN=TOP WIDTH="97"><div> 4 to 5</div> </tD> <tD VALIGN=TOP><NOBR><div> 175 to 190 (350 to 370)</div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 16 WIDTH="163"><div> PC</div> </tD> <tD VALIGN=TOP WIDTH="99"><div> Yes</div> </tD> <tD VALIGN=TOP WIDTH="97"><div> 3 to 4</div> </tD> <tD VALIGN=TOP><NOBR><div> 120 to 130 (250 to 270)</div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 16 WIDTH="163"><div> PC/PBT/E</div> </tD> <tD VALIGN=TOP WIDTH="99"><div> Yes</div> </tD> <tD VALIGN=TOP WIDTH="97"><div> 3 to 4</div> </tD> <tD VALIGN=TOP><NOBR><div> 120 to 130 (250 to 270)</div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 16 WIDTH="163"><div> PCS</div> </tD> <tD VALIGN=TOP WIDTH="99"><div> Yes</div> </tD> <tD VALIGN=TOP WIDTH="97"><div> 2 to 3</div> </tD> <tD VALIGN=TOP><NOBR><div> 105 to 110 (220 to 230)</div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 16 WIDTH="163"><div> PEEK</div> </tD> <tD VALIGN=TOP WIDTH="99"><div> Yes</div> </tD> <tD VALIGN=TOP WIDTH="97"><div> 3 to 4</div> </tD> <tD VALIGN=TOP><NOBR><div> 150 to 160 (300 to 320)</div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 16 WIDTH="163"><div> PEM</div> </tD> <tD VALIGN=TOP WIDTH="99"><div> Yes</div> </tD> <tD VALIGN=TOP WIDTH="97"><div> 4 to 5</div> </tD> <tD VALIGN=TOP><NOBR><div> 150 to 160 (300 to 320)</div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 16 WIDTH="163"><div> PES</div> </tD> <tD VALIGN=TOP WIDTH="99"><div> Yes</div> </tD> <tD VALIGN=TOP WIDTH="97"><div> 3 to 4</div> </tD> <tD VALIGN=TOP><NOBR><div> 150 to 160 (300 to 320)</div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 16 WIDTH="163"><div> PET</div> </tD> <tD VALIGN=TOP WIDTH="99"><div> Yes</div> </tD> <tD VALIGN=TOP WIDTH="97"><div> 4 to 5</div> </tD> <tD VALIGN=TOP><NOBR><div> 160 to 175 (320 to 350)</div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 16 WIDTH="163"><div> PET (Rynite)</div> </tD> <tD VALIGN=TOP WIDTH="99"><div> Yes</div> </tD> <tD VALIGN=TOP WIDTH="97"><div> 3 to 4</div> </tD> <tD VALIGN=TOP><NOBR><div> 130 to 135 (270 to 280)</div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 16 WIDTH="163"><div> Polysulfone</div> </tD> <tD VALIGN=TOP WIDTH="99"><div> Yes</div> </tD> <tD VALIGN=TOP WIDTH="97"><div> 4 to 5</div> </tD> <tD VALIGN=TOP><NOBR><div> 120 to 125 (250 to 260)</div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 16 WIDTH="163"><div> Polyurethane</div> </tD> <tD VALIGN=TOP WIDTH="99"><div> Yes</div> </tD> <tD VALIGN=TOP WIDTH="97"><div> 2 to 3</div> </tD> <tD VALIGN=TOP><NOBR><div> 80 to 95 (180 to 200)</div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 16 WIDTH="163"><div> PP</div> </tD> <tD VALIGN=TOP WIDTH="99"><div> No</div> </tD> <tD VALIGN=TOP WIDTH="97"><div> 1 to 2</div> </tD> <tD VALIGN=TOP><NOBR><div> 75 to 80 (170 to 180)</div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 16 WIDTH="163"><div> PPC</div> </tD> <tD VALIGN=TOP WIDTH="99"><div> Yes</div> </tD> <tD VALIGN=TOP WIDTH="97"><div> 3 to 4</div> </tD> <tD VALIGN=TOP><NOBR><div> 125 to 130 (260 to 270)</div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 16 WIDTH="163"><div> PPO</div> </tD> <tD VALIGN=TOP WIDTH="99"><div> Yes</div> </tD> <tD VALIGN=TOP WIDTH="97"><div> 2 to 3</div> </tD> <tD VALIGN=TOP><NOBR><div> 95 to 130 (200 to 270)</div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 16 WIDTH="163"><div> PRS</div> </tD> <tD VALIGN=TOP WIDTH="99"><div> Yes</div> </tD> <tD VALIGN=TOP WIDTH="97"><div> 2 to 3</div> </tD> <tD VALIGN=TOP><NOBR><div> 130 to 135 (270 to 280)</div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 16 WIDTH="163"><div> PS</div> </tD> <tD VALIGN=TOP WIDTH="99"><div> No</div> </tD> <tD VALIGN=TOP WIDTH="97"><div> 1 to 2</div> </tD> <tD VALIGN=TOP><NOBR><div> 80 to 90 (180 to 190)</div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 16 WIDTH="163"><div> PVC (flexible)</div> </tD> <tD VALIGN=TOP WIDTH="99"><div> No</div> </tD> <tD VALIGN=TOP WIDTH="97"><div> 1 to 2</div> </tD> <tD VALIGN=TOP><NOBR><div> 70 to 80 (160 to 180)</div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 16 WIDTH="163"><div> PVC (rigid)</div> </tD> <tD VALIGN=TOP WIDTH="99"><div> No</div> </tD> <tD VALIGN=TOP WIDTH="97"><div> 1 to 2</div> </tD> <tD VALIGN=TOP><NOBR><div> 70 to 80 (160 to 180)</div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 16 WIDTH="163"><div> SAN</div> </tD> <tD VALIGN=TOP WIDTH="99"><div> Yes</div> </tD> <tD VALIGN=TOP WIDTH="97"><div> 3 to 4</div> </tD> <tD VALIGN=TOP><NOBR><div> 80 to 90 (180 to 190)</div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 16 WIDTH="163"><div> TPE *</div> </tD> <tD VALIGN=TOP WIDTH="99"><div> Yes</div> </tD> <tD VALIGN=TOP WIDTH="97"><div> 2 to 3</div> </tD> <tD VALIGN=TOP><NOBR><div> 100 to 105 (210 to 220)</div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 16 WIDTH="163"><div> TPR *</div> </tD> <tD VALIGN=TOP WIDTH="99"><div> Yes</div> </tD> <tD VALIGN=TOP WIDTH="97"><div> 2 to 3</div> </tD> <tD VALIGN=TOP><NOBR><div> 70 to 75 (160 to 170)</div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 16 WIDTH="163"><div> TPV *</div> </tD> <tD VALIGN=TOP WIDTH="99"><div> Yes</div> </tD> <tD VALIGN=TOP WIDTH="97"><div> 2 to 3</div> </tD> <tD VALIGN=TOP><NOBR><div> 75 to 80 (170 to 180)</div> </NOBR></tD> </tR> </TABLE></div> <div> *Some TPE, TPR and TPV formulations are not classified hygroscopic but should be</div> <div> dried at 70 to 75<I>°</I>C (160 to 170<I>°</I>F) for 1 to 2 hours to drive off surface moisture</div> </td> </tr></table></body>