Polypropylene Compounds for Extrusion
& Blow Molding

These filled, extrusion grade polypropylene compounds combine an excellent balance of properties with good processibility and low cost. The materials utilize various mineral fillers and reinforcements and are available in a range of melt flows to process well in sheet extrusion, thermoforming, profile extrusion, and blow molding operations. Most of these compounds are available with full FDA approval for food contact applications. We also have a full line of polypropylene compounds for use in the injection molding process.

The following charts highlight some of our more standard materials.

Filled Homopolymer

Filled homopolymer polypropylenes provide the highest level of stiffness and heat resistance of filled olefins. Talc filled grades offer the highest strength properties, while calcium carbonate filled grades offer an excellent balance of stiffness and impact resistance. Typical applications include extrusion/thermoformed food containers, and profile extruded and blow molded structural parts.

Filled Homopolymer
Property	Condition	Units	Method	Product Summary
Product Code	–	–	–	DP5120	EP5140	EP5220	EP5240
Filler Type	–	–	–	Talc	Talc	CaC03	CaC03
Filler Percentage	–	%	–	20	40	20	40
Specific Gravity	73°F	–	ASTM D792	1.05	1.25	1.05	1.25
Tensile Strength	Yield	psi	ASTM D638	5100	5000	4400	3600
Tensile Elongation	Yield	%	ASTM D638	4	3	6	5
	Break			30	10	100	70
Flexural Modulus	Secant	psi	ASTM D790	280,000	360,000	230,000	270,000
	Tangent	psi	ASTM D790	380,000	540,000	290,000	35,000
Notched Izod Impact	73°F	ft-lb/in	ASTM D256	0.9	0.8	1.2	1.1
Gardner Impact	73°F	ft-lb	ASTM D5420	1.5	1	14	20
	22°F	ft/lb	ASTM D5420	<1.0	<1.0	2	3
Heat Deflection	66 psi	°F	ASTM D648	250	280	210	240
	264 psi	°F	ASTM D648	150	175	130	140
Linear Shrinkage	1/8" wall	in/in	–	0.014	0.009	0.015	0.011
60° Gloss	–	gloss unit	ASTM D523	47	40	75	55
Use conditions and applicable laws may differ from jurisdiction to jurisdiction, and may be subject to change at any time. Customers are responsible for determining whether products and information are appropriate for their use. Spartech Corporation and its subsidiaries assume no liability for the accuracy or completeness of information contained herein, and all information is subject to change without notice. No freedom from infringement of any patent, trademark or copyright owned by Spartech or any of its subsidiaries is to be inferred. NO WARRANTIES, EXPRESS OR IMPLIED, ARE GIVEN; ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY EXCLUDED.

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Filled and Reinforced Copolymer

Filled copolymers offer a higher level of impact performance than homopolymer materials, and higher stiffness than unfilled copolymers. Copolymer based materials retain much of their impact strength at low temperatures. Typical applications include thermoformed frozen food containers, extruded and blow molded automotive and construction materials, and blow molded recreational equipment.

Filled and Reinforced Copolymer
Property	Condition	Units	Method	Product Summary
Product Code	–	–	–	EP6120	EP6220	EP6240	EP6430
Filler Type	–	–	–	Talc	CaC03	CaC03	Glass
Filler Percentage	–	%	–	20	20	40	30
Specific Gravity	73°F	–	ASTM D792	1.05	1.05	1.25	1.12
Tensile Strength	Yield	psi	ASTM D638	4200	3600	3400	10,000
Tensile Elongation	Yield	%	ASTM D638	6	8	6	4
	Break			100	>200	>200	4
Flexural Modulus	Secant	psi	ASTM D790	230,000	160,000	200,000	600,000
	Tangent	psi	ASTM D790	310,000	230,000	280,000	850,000
Notched Izod Impact	73°F	ft-lb/in	ASTM D256	1.5	3	3	4
Gardner Impact	73°F	ft-lb	ASTM D5420	10	>25	>25	10
	22°F	ft/lb	ASTM D5420	2	8	6	2
Heat Deflection	66 psi	°F	ASTM D648	220	180	210	315
	264 psi	°F	ASTM D648	135	115	130	270
Linear Shrinkage	1/8" wall	in/in	–	0.014	0.015	0.011	0.004
60° Gloss	–	gloss unit	ASTM D523	45	65	55	<50
Use conditions and applicable laws may differ from jurisdiction to jurisdiction, and may be subject to change at any time. Customers are responsible for determining whether products and information are appropriate for their use. Spartech Corporation and its subsidiaries assume no liability for the accuracy or completeness of information contained herein, and all information is subject to change without notice. No freedom from infringement of any patent, trademark or copyright owned by Spartech or any of its subsidiaries is to be inferred. NO WARRANTIES, EXPRESS OR IMPLIED, ARE GIVEN; ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY EXCLUDED.