Braskem PB681 LDPE Cast and Blown Film Extrusion, Injection Molding Polyethylene

Login to see your most recently viewed materials here. Or if you don't have an account with us yet, then click here to register.

(Viewing data as-entered. Click here to return)

Braskem PB681 LDPE Cast and Blown Film Extrusion, Injection Molding Polyethylene (discontinued **)
Categories:	Polymer; Film; Thermoplastic; Polyethylene (PE); Low Density (LDPE); Low Density Polyethylene (LDPE), Film Grade
Material Notes:	PB681 is a resin produced under high pressure in a tubular reactor. This resin presents excellent 'draw down' (stability to form fine films). The films produced with this resin have excellent optical properties. It does not contain additives. It is used in LLDPE and HDPE blends. For blown film extrusion processing the screw - L/D relation should be 16 to 30:1, the compression rate should be 3 to 4:1, and the frost line height should at most be equivalent to the bubble diameter. For cast film extrusion processing the screw - L/D relation should be at least 20:1.
Vendors:	No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
Printer friendly version Download as PDF Download to Excel (requires Excel and Windows) Export data to your CAD/FEA program Add to Folder:

Physical Properties	Original Value	Comments

Density	0.922 g/cc	ASTM-D1505
Melt Flow	3.8 g/10 min @Load 2.16 kg, Temperature 190 °C	ASTM-D1238

Mechanical Properties	Original Value	Comments
Film Elongation at Break, MD	370 %	ASTM-D882
Film Elongation at Break, TD	1070 %	ASTM-D882
Elmendorf Tear Strength TD	100 g	ASTM-D1922
Elmendorf Tear Strength, TD	2.63 g/micron	ASTM-D1922
Dart Drop	1.58 g/micron	ASTM-D1709
Dart Drop Test	60.0 g	ASTM-D1709
Film Tensile Strength at Break, MD	30.0 MPa	ASTM-D882
Film Tensile Strength at Break, TD	20.0 MPa	ASTM-D882

Optical Properties	Original Value	Comments
Haze	4.0 %	ASTM-D1003
Gloss	120 %	Angle 60°; ASTM-D2457

Processing Properties	Original Value	Comments
Die Temperature	250 - 290 °C	Cast Film Extrusion
Mold Temperature	5.00 - 25.0 °C	Injection Molding
Blow-up Ratio (BUR)	2.0 - 3.0	Blown Film Extrusion
Roll Temperature	40.0 °C	Chill

Descriptive Properties
Screen Package	40/60/40	mesh, Blown Film Extrusion
Temperature Profile (°C)	110	Blown Film Extrusion: 1st zone
	140	Blown Film Extrusion: From the screw to the die
	150	Blown Film Extrusion: Die
	180-220	Injection Molding
	180-250	Cast Film Extrusion: Screw

**
Materials flagged as discontinued () are no longer part of the manufacturer’s standard product line according to our latest information. These materials may be available by special order, in distribution inventory, or reinstated as an active product. Data sheets from materials that are no longer available remain in MatWeb to assist users in finding replacement materials.

Users of our Advanced Search (registration required) may exclude discontinued materials from search results.

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to go back to viewing the property data in MatWeb's normal format.

Users viewing this material also viewed the following:
Braskem Green PE SHA7260 Injection Molding High Density Polyethylene
Braskem EB853 Cast Film Extrusion Low Density Polyethylene
NatureWorks® Ingeo™ 6202D Fiber Grade PLA
Braskem PB681/59 LDPE Blown Film Extrusion Polyethylene
Braskem PB681/59 Blown Film Extrusion Low Density Polyethylene

PBRAS865 / 106711

	Advertise with MatWeb!
	Data sheets for over 180,000 metals, plastics, ceramics, and composites.
	HOME • SEARCH • TOOLS • SUPPLIERS • FOLDERS • ABOUT US • FAQ • LOG IN

System Message