Celcon® M90™

This supplier and product may also be known by these terms: Celcom

Product names can be difficult to match. You may have searched any one of these terms to find this product: Celcon® M90™, Celcon M90, Celcon® , Celcon, CelconM90, M 90, M90™, M90, Acetal Copolymer, Acetal Copolymer, Acetal (POM) Copolymer, Acetal POM Copolymer, Acetal, pom, Ticona, AcetalPOMCopolymer, 90M

Features may also be described by the following terms: Medium Viscosity.

Uses may also be described by the following terms: Tubing, Tube.

This plastic material has approval for 31 automotive specifications from the following agencies (the number in parentheses shows the number of specifications for that agency): CHRYSLER (3), GM (7), AC (1), TOYOTA (1), VALEO (2), DELCO (8), DELCO PROD (1), DELPHI (1), FORD (3), CHEVROLET (4).

Standard reciprocating screw injection molding machines with a high compression screw (minimum 3:1 and preferably 4:1) and low back pressure (0.35 Mpa/50 PSI) are favored. Using a low compression screw (I.E. general purpose 2:1 compression ratio) can result in unmelted particles and poor melt homogeneity. Using a high back pressure to make up for a low compression ratio may lead to excessive shear heating and deterioration of the material.

Melt Temperature: Preferred range 182-199 C (360-390 F). Melt temperature should never exceed 230 C (450 F).

Mold Surface Temperature: Preferred range 82-93 C (180-200 F) especially with wall thickness less than 1.5 mm (0.060 in.). May require mold temperature as high as 120 C (250 F) to reproduce mold surface or to assure minimal molded in stress. Wall thickness greater than 3mm (1/8 in.) may use a cooler (65 C/150 F) mold surface temperature and wall thickness over 6mm (1/4 in.) may use a cold mold surface down to 25 C (80 F). In general, mold surface temperatures lower than 82 C (180 F) may hinder weld line formation and produce a hazy surface or a surface with flow lines, pits and other included defects that can hinder part performance.

Standard extruders with a length to diameter ratio of at least 20:1 are recommended. The screw should be a high compression ratio of at least 3:1 and preferably 4:1 to assure good melting and uniform melt homogeneity. The design should be approximately 35% each for the feed and metering sections with the remaining 30% as transition zone.

Film Extrusion Melt temperature: 160 to 220°C (320 to 430°F)
Other Extrusion Melt temperature 180 to 220°C (355 to 430°F)
Profile Extrusion Melt temperature: 180 to 220°C (360 to 430°F)
Sheet Extrusion Melt temperature: 180 to 190°C (355 to 375°F)