DOW™ LDPE 722 Dow Polyethylene, Low Density

Product Description

Dow™ LDPE 722 is used in flexible packaging and paperboard coating applications such as liquid/juice, laminate tube, condiment pouches, dry foods packaging, snack foods packaging, moist foods packaging, sugar pouches, lidding stock and medical packaging. DOW LDPE extrusion coating resins provide optimal neck-in and draw-down performance with minimal taste/odor contribution.

DOW Polyethylene 722 is a broad molecular weight distribution homopolymer designed to offer good impact strength and crack resistance, with excellent flexibility. The resin has good processability over a wide range of molding conditions.

Typical applications include caps/closures

Good impact, ESCR with excellent flexibility

Complies with:

CANADIAN HPFB NO OBJECTION (WITH LIMITATIONS)

EU, No 10/2011

U.S. FDA 21 CFR 177.1520 (c) 2.2

U.S. FDA DMF

Consult the regulations for complete details.

General

Material Status

Commercial: Active

Availability

Asia Pacific

Latin America

North America

Agency Ratings

Forms

Pellets

Processing Method

Extrusion Coating

Injection Molding

Physical	Nominal Value	Unit	Test Method
Specific Gravity			ASTM D792
Melt Mass-Flow Rate (MFR) (190°C/2.16 kg)		g/10 min	ASTM D1238
Environmental Stress-Cracking Resistance³ (122°F, 100% Igepal, F50)		hr	ASTM D1693
Mechanical	Nominal Value	Unit	Test Method
Tensile Strength³			ASTM D638
Yield		psi
Break		psi
Tensile Elongation³			ASTM D638
Yield		%
Break		%
Flexural Modulus - 2% Secant³		psi	ASTM D790B
Coefficient of Friction			ASTM D1894
Films	Nominal Value	Unit	Test Method
Seal Initiation Temperature⁴		°F	Internal Method
Water Vapor Transmission Rate		g·mil/100in²/atm/24 hr	ASTM F1249
Impact	Nominal Value	Unit	Test Method
Tensile Impact Strength^5, 3		ft·lb/in²	ASTM D1822
Hardness	Nominal Value	Unit	Test Method
Durometer Hardness³ (Shore D)			ASTM D2240
Thermal	Nominal Value	Unit	Test Method
Deflection Temperature Under Load³ (66 psi, Unannealed)		°F	ASTM D648
Brittleness Temperature³		°F	ASTM D746
Vicat Softening Temperature		°F	ASTM D1525
Melting Temperature (DSC)		°F	Internal Method
Peak Crystallization Temperature (DSC)		°F	Internal Method
Additional Information	Nominal Value	Unit	Test Method
Melt Temperature - Recommended		°F	Internal Method
Fabrication Conditions For Extrusion Coating Film: Screw Size: 3.5 in. (89 mm); 30:1 L/D Screw Type: Single Flight with Maddock Mixer Die Gap: 20 mil (0.508 mm) Melt Temperature: 625°F (329°C) Output: 250 lb/hr Screw Speed: 90 rpm
Related Terminology
Product names can be difficult to match. You may have searched any one of these terms to find this product: DOW™ LDPE 722, DOW LDPE 722, DOW™ LDPE , DOW LDPE, DOWLDPE722, DOWLDPE, LDPE 722, LDPE722, LDPE, 722, Polyethylene, Low Density, Polyethylene Low Density, Polyethylene, PE, Dow, PolyethyleneLowDensity, 722LDPE
Agency Ratings
This plastic material has 4 certifications from the following agencies (the number in parentheses shows the number of certifications for that agency): DMF (1), EU (1), HPFB (Canada) (1), FDA (1).

Extrusion	Nominal Value	Unit	Test Method
Maximum Line Speed		ft/sec	Internal Method
Minimum Coating Thickness		mil	Internal Method
Minimum Coating Weight		lb/ream	Internal Method
Neck-in (610°F, 1.0 mil)		in	Internal Method

Notes

¹With limitations

²Typical properties: these are not to be construed as specifications.

³Molded and tested in accordance with ASTM D4976.

⁴Temperature at which 1 lb/in (4.4 N/25.4 mm) heat seal strength is achieved.
Heat Seal Strengths, Topware HT Tester 0.5 S dwell, 40 pis bar pressure, pull speed 250 mm/sec.

⁵Type S

DOW™ LDPE 722

Low Density Polyethylene Resin

Supplied by The Dow Chemical Company