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Multiflex® A 1004 BZ 4775 N0200 Compounded Rubber In Primary Form

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Multiflex® A1004 B Z4775 N0200 is designed for use in injection molding/extrusion.
Polymer Name: Styrenic Thermoplastic Elastomer
Processing Methods: Injection Molding, Extrusion
Tear Strength: 46.0 kN/m
Strain at Break: 550.0 %
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Identification & Functionality

Multiflex® A 1004 BZ 4775 N0200 Compounded Rubber In Primary Form Features & Benefits

Product Highlights
  • Soft touch
  • UV stabilized
  • Black
  • Compatibility: ABS, ABS/PC, ASA, PMMA

Applications & Uses

Processing Notes

Multiflex® brand series TEA/A1004 are alloy based on SEBS designed for overmolding on technical polymers like PC/ABS/ASA/SAN.

Background

Multiflex® TEA/A1004 alloys are sensitive to temperature above 220°C. To avoid any retention zone, mold must be correctly dimensioned and geometry must be optimized.

Pre-drying

To obtain maximal product efficiency, humidity in raw material must be below 0.1% before injection. This level is obtained by an efficient predrying under hot air venting, between 90 to 100°C, during 4 to 6 hours. Ideally, a mechanical mixing during pre-drying speeds up humidity extraction. Timing between pre-drying and injection must be limited, and ideally material must be protect from ambient air.

Machinery cleaning

High flow thermoplastic must be used, PEHD, PELD or PP.

Coloring

Multiflex® TEA/A1004 alloys are easily colorable by using color masterbatch based on PE or ethylene copolymers (EVA).

Recycling

Due to the fact that Multiflex® TEA/A1004 alloys are thermal sensitive, recycling can reduce product properties. We recommend a maximal level of 5% of recycling material in virgin material.

Injection

Multiflex® series TEA/A1004 alloys are viscous material and high pressure is needed to inject them. Whole tooling, meaning screw, mold, and runner must be well designed to limit material stagnation at high temperature. Total material volume in the tool must be limited to 3 - 5 molding volumes.

Processing parameters

Screw: Geometry: standard injection machine, L/D > 20, compression rate 2:1 to 3:1 (if higher, risk of thermal degradation). Ideally, screw volume must be limited to 3 - 5 mold volume, to limit material stagnation under heat. A screw speed upper 150 rpm, combined with a high counter-pressure ensures thorough melting of the material without excessive temperature generation.

Back pressure

Must be higher than 10 bars. This will ensure a uniform melt without severe shear heating.

Temperatures (°C)

See Figure 1.

Feed Zone: 170 +/- 10
Zone 1: 180 +/- 10
Zone 2: 190 +/- 10
Nozzle: 200 +/- 10

Figure 1: Injection molding processing temperatures

DuPont Multiflex A 1004 BZ 4775 N0200 Compounded Rubber In Primary Form Processing Notes - 1Injection Speed

Injection speed and fill time are highly dependent on part geometry, complexity and gate design. Faster speeds typically result in easier mold filling but limits adhesion, while lower speeds result in better surface appearance but needs high injection pressure. Start with an injection speed around 60% of maximum speed.

Holding pressure

Start with a pressure equivalent to 30% of maximum injection pressure. Excessive holding pressure can result in distortion in the area of the gate due to elastomeric characteristics of the material.

Holding time

Three seconds can be used to start to ensure sufficient time for gate freeze off. Holding time can be slowly reduced until changes in part appearance or weight occur.

Mold

Use conventional mold design (venting, finish, draft) with temperatures from 10 to 60°C. In the range of 20 - 30°C typically gives good results.

Hot Runners

Limit hot runner temperature below 190°C to enhance material degradation. Furthermore, if hot runner volume is too high (volume upper than 2 volume shot), limit hot runner temperature below 180 - 185°C.

Extrusion

Multiflex® TEA /A1004 alloys can be processed on all extrusion machines for PVC, polyolefin. A screw, with a compression ratio of 3 is recommended.

Temperatures (°C)

See Figure 2.

Feed Zone: 160 +/- 10
Zone 1: 170 +/- 10
Zone 2: 180 +/- 10
Die: 190 +/- 10

Figure 2: Extrusion processing temperatures

DuPont Multiflex A 1004 BZ 4775 N0200 Compounded Rubber In Primary Form Processing Notes - 2

Properties

Color
Compatible Polymers & Resins
Physical Form
Mechanical Properties
ValueUnitsTest Method / Conditions
Hardness - Shore A (3s)63-ISO 868
Stress at 100% Strain2.4MPaISO 527-1/-2
Stress at Break13MPaISO 527-2
Strain at Break550%ISO 527-1/-2
Tear Strength - Parallel46kN/mISO 34-1
Physical Properties
ValueUnitsTest Method / Conditions
Flow Length290mm-
Other Properties
ValueUnitsTest Method / Conditions
Density1020kg/m³ISO 1183
Processing Information (Extrusion)
ValueUnitsTest Method / Conditions
Melt Temperature Range180 - 200°C-
Melt Temperature Optimum190°C-
Drying Time (Dehumidified Dryer)4 - 6h-
Drying Temperature90 - 100°C-
Processing Information (Injection Molding)
ValueUnitsTest Method / Conditions
Drying RecommendedYes--
Drying Temperature95°C-
Drying Time (Dehumidified Dryer)4 - 6h-
Melt Temperature Optimum190°C-
Mold Temperature Optimum30°C-
Min. Mould Temperature10°C-
Max. Mould Temperature50°C-
Hold Pressure RangeAs low as possibleMPa-
Back Pressure1.5MPa-

Technical Details & Test Data

Use Limitations

This product is neither tested nor represented as suitable for medical or pharmaceutical uses.

Packaging & Availability

Packaging Information

This product is available in a variety of container sizes.

Storage & Handling

Storage and Handling

Containers should be kept tightly closed and kept in cold storage at all times to extend shelf life. Shelf life is indicated by the "Use Before" date found on the product label.

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Multiflex® A1004 B Z4775 N0200 Injection Molding Guide
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Multiflex® A 1004 BZ 4775 N0200 Compounded Rubber In Primary Form
Other
Products: Multiflex® A 1004 BZ 4775 N0200 Compounded Rubber In Primary Form
Multiflex® A1004 B Z4775 N0200 Technical Data Sheet
Technical Data Sheet
Multiflex® A 1004 BZ 4775 N0200 Compounded Rubber In Primary Form
Technical Data Sheet
Products: Multiflex® A 1004 BZ 4775 N0200 Compounded Rubber In Primary Form