Avient Polystrand ThermoPro™ IE7010 Unitape Unidirectional Polypropylene-Glass Composite
- Product Name: Avient Polystrand ThermoPro™ IE7010 Unitape Unidirectional Polypropylene-Glass Composite
- Factroy Site: Yinchuan, Ningxia, China
- Price Inquiry: sales8@ascent-chem.com
- Manufacturer: Ascent Petrochem Holdings Co., Limited
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- Avient Polystrand ThermoPro™ IE7010 Unitape Unidirectional Polypropylene-Glass Composite is typically used in formulations when glass fiber orientation and fiber volume fraction and processing temperature and consolidation pressure must be controlled within specific ranges.
| HS Code | 518342 |
| Fiber Type | E-Glass |
| Matrix Polymer | Polypropylene |
| Glass Fiber Content | 70% by weight |
| Density | 1.75 g/cm³ |
| Tensile Strength | 1100 MPa |
| Tensile Modulus | 40 GPa |
| Flexural Strength | 1100 MPa |
| Flexural Modulus | 35 GPa |
| Elongation At Break | 2.5% |
| Notched Izod Impact | 1200 J/m |
| Heat Deflection Temperature | 155 °C |
| Melting Point | 165 °C |
As an accredited Avient Polystrand ThermoPro™ IE7010 Unitape Unidirectional Polypropylene-Glass Composite factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Supplied as one roll per moisture-barrier bag, wound on a core, then packed in a labeled cardboard box. |
| Container Loading (20′ FCL) | 20′ FCL container loading for Avient Polystrand ThermoPro™ IE7010 Unitape Unidirectional Polypropylene-Glass Composite: palletized, secured, dry-shipped safely for transport. |
| Shipping | Avient Polystrand ThermoPro™ IE7010 Unitape Unidirectional Polypropylene-Glass Composite typically ships as a non-hazardous solid in rolls or spools on pallets. It is not DOT/IMDG/IATA regulated. Package with moisture protection, keep sealed, and transport in clean, dry vehicles at ambient temperature. Avoid heat, UV, contamination, fiber dust, and sharp edges. |
| Storage | Store Avient Polystrand ThermoPro™ IE7010 Unitape in its original sealed packaging in a cool, dry, well-ventilated area. Protect from direct sunlight, moisture, dust, heat, ignition sources, and chemicals. Keep rolls flat and supported to prevent warping or crushing. Avoid prolonged UV exposure. Maintain recommended temperature and humidity, and rotate stock first-in, first-out. Inspect before use. |
| Shelf Life | Shelf life is indefinite when stored properly in original packaging, in a cool, dry area, away from sunlight and moisture. |
In high-volume automotive door module carrier production, Avient Polystrand ThermoPro™ IE7010 Unitape unidirectional polypropylene–glass composite is converted into consolidated blanks that combine continuous E-glass fiber with a thermoplastic polypropylene matrix for subsequent overmolding. The tape is cut, stacked in a [0/90/0] ply sequence, and heated by infrared emitters to a surface temperature of 200–230 °C before transfer into a shuttle press containing platens at 60–80 °C. Consolidation at 4–8 bar causes the polypropylene matrix to flow between glass rovings and adjacent plies; the lower platen temperature is held below the matrix crystallization onset to lock fiber alignment before demolding. The continuous E-glass roving content is controlled by the supplier, but process windows are defined in part by matrix melt-flow rate measured at 230 °C under 2.16 kg load according to ISO 1133-1:2022. For door module carriers, the blank is subsequently overmolded with polypropylene long-glass-fiber compound in an injection molding machine equipped with a screw diameter of 25–30 mm and back pressure 50–80 bar; these settings reduce glass fiber attrition in the overmolding compound while the continuous tape carries the main bending load. The interface between the consolidated tape and overmolded polypropylene is formed by co-crystallization rather than adhesive bonding, so interface strength depends on mold wall temperature, typically 70–90 °C. The carrier integrates window regulator rails, loudspeaker housings, and wiring harness clips. Dimensional stability is assessed after cycling between -30 °C and 80 °C, and volatile emissions are limited by VDA 277 with odor by VDA 270, as required for non-metallic interior components. Tensile properties of consolidated laminates are verified by ISO 527-4:2021, flexural properties by ISO 14125, and density by ISO 1183-1:2019, with typical consolidated density below 1.55 g/cm³ for glass-mass-fraction configurations used in interior door structures.
Production-scale experience with double-belt and shuttle-press consolidation indicates that edge fiber waviness and ply slippage occur when infrared heating is non-uniform or transfer time allows surface layers to cool before pressing. Because the polypropylene matrix re-crystallizes rapidly at a cold platen surface, an unheated boundary layer can produce resin-rich pockets that reduce interlaminar shear strength. Inline process controls therefore monitor surface temperature with pyrometers at multiple points across the blank width and record press force versus displacement to detect viscosity drift between incoming tape lots. The supplier matrix melt-flow data, measured by ISO 1133-1:2022, are compared with incoming lot data; significant deviation from the qualified melt-flow value generally requires re-approval of consolidation and overmolding parameters. Melt-flow differences alter squeeze flow and fiber impregnation during pressing, which in turn shifts local glass volume fraction and stiffness. Molded door carriers are pulled for fractional destructive testing at a frequency tied to press cavity count and OEM part class; tensile coupons are cut parallel and transverse to the primary load direction and tested per ISO 527-4:2021.
Why Do Battery Enclosure Designers Replace Aluminum with PP–Glass UD Tape?
Traction battery enclosure development evaluates IE7010 as a lightweight cover or lateral crush structure where galvanic separation and mass reduction are required. The polypropylene matrix gives the laminate a dielectric character, but the unmodified material must not be assumed to pass fire or thermal runaway requirements; flame-retardant interlayers or compounded skins are necessary for pack-level certification. The cover blank is preheated by infrared to 200–220 °C, transferred to a compression press with clamp force 800–1200 t, and consolidated at 80–120 bar cavity pressure. Mold temperature is held at 50–70 °C and the part is cooled below 70 °C before opening to reduce warpage caused by differential crystallization between glass-rich and resin-rich zones. Local reinforcement plies are added around hinge regions and latch bosses in a [0/90/0/90] sequence, while the nominal wall thickness remains 1.8–3.2 mm. The polypropylene matrix also reduces the risk of galvanic corrosion when assembled with aluminum side rails. Static and impact validation follow ISO 6469-1:2019 for electric vehicle battery packs, with material-level tensile testing by ASTM D3039/D3039M-17 at 23 °C and -20 °C. Because published data for IE7010 under thermal runaway exposure are limited, pack developers must perform component-level abuse testing rather than inferring performance from UL 94 ratings alone. The following test matrix is applied to consolidated coupons before production approval:
| Test method | Condition | Parameter |
|---|---|---|
| ASTM D3039/D3039M-17 | 0° and 90°, 23 °C | Tensile modulus, strength |
| ISO 14125 | 23 °C, four-point | Flexural modulus, strength |
| ISO 179-1:2010 | Charpy edgewise, -30 °C | Impact resistance |
| ISO 11357-3:2018 | 10 K/min | Crystallization half-time, melting onset |
| ISO 1183-1:2019 | Method A, 23 °C | Density |
Thermoforming Pressure and Rapid Cooling in Snowboard Core Laminates
When IE7010 unitape is selected as a structural facing in snowboard or ski core lamination, the process must control both pressure and cooling rate to produce a dimensionally stable part. Tapes are preheated to 210–230 °C and transferred to a cold matched die at 30–50 °C, where consolidation pressure 10–15 bar is applied for 60–120 s. Rapid cooling above 5 K/min through the crystallization onset of polypropylene is maintained by the chilled tool; this suppresses large spherulite growth and reduces post-demolding warp. The facing stack often uses ±15° orientation relative to the longitudinal axis of the board to balance torsional stiffness and edge impact response. The core is typically a polymer foam or wood-reinforced polypropylene structure, and the facings are bonded by fusion of the matrix without an additional adhesive film. Final board performance is evaluated by ISO 179-1:2010 Charpy impact at -30 °C and four-point flexural testing according to ISO 14125. For dynamic damping claims, data are generated by ASTM E756-05 beam vibration testing; published data for IE7010 in full snowboard constructions are limited, so specific damping values must be measured on the final laminate stack rather than on the tape alone. The thermoplastic matrix permits edge-to-sidewall joining by ultrasonic welding in some designs, but welding parameters must be tuned to avoid glass fiber displacement at the weld line.
Pipe repair overwraps based on IE7010 unitape are installed where carbon steel pipelines require localized reinforcement in hydrocarbon service without hot work. The repair method uses continuous hoop plies produced by hot-gas winding at 180–200 °C, with substrate preheat restricted below 120 °C when residual hydrocarbon may be present. Each layer is compacted by a roller under controlled tension immediately after heating; the polypropylene matrix solidifies quickly, allowing multiple hoop and shear plies to be applied in sequence. Repair thickness is designed according to ISO/TS 24817, which requires the laminated overwrap to carry hoop and axial stress at design pressure and temperature. The laminate is normally composed of 90° hoop plies and ±45° shear plies, with minimum repair length determined by stress decay from the defect. Chemical resistance is a qualification point because published data for IE7010 in long-term hydrocarbon immersion are limited; compatibility is evaluated by ISO 175:2010 immersion tests using the actual product stream or a representative condensate mixture. Unlike wet layup epoxy systems, the polypropylene tape contains no reactive diluent, so no cure exotherm occurs during installation, allowing live-line repair without an exothermic reaction. The overwrap is intended for non-critical pipe segments where peel inspection is conducted after installation; adhesion to the prepared steel substrate is checked by a pull-off test in accordance with ISO 4624:2016 on a witness coupon prepared alongside the repair.
When Shipping Container Panels Are Consolidated in a Single Press Cycle
For truck trailer side walls and logistics container panels, IE7010 unitape facings are consolidated in a single press cycle. In a double-belt line, the top and bottom tapes are fed above and below a thermoplastic honeycomb core, preheated to 190–210 °C, and pressed between polytetrafluoroethylene-coated belts at 3–6 bar for 45–90 s. The polypropylene matrix fuses to the core surface when the core skin is also polypropylene, eliminating a separate adhesive station. Panel thickness is commonly 18–35 mm, with facing thicknesses 0.8–1.5 mm; load introduction around hinges, locks, and corner fittings uses additional local plies or injection-molded polypropylene inserts. Key design controls include belt temperature uniformity and cooling capacity, because residual heat after belt exit can cause dimensional relaxation and surface waviness. In contrast to wood-reinforced phenolic panels, the thermoplastic facings have low equilibrium moisture uptake; panel mass stability under humidity cycling is tested by ISO 62:2008. Bending performance is verified by ISO 14125, and surface burning behavior in transit applications is assessed by ASTM E162 or ASTM E84 depending on the market. The final panels serve as side scuff liners, roof bows, and bulkhead partitions; assembled units are subjected to ASTM D4169-22 transport vibration schedules to validate fastener retention after cyclic loading.
Building and infrastructure façade panels use IE7010 as an embedded tensile skin in thermoplastic sandwich elements where moisture resistance and damage tolerance control the design. The unidirectional glass–polypropylene facings are co-consolidated with a polypropylene foam or recycled polymer core in a flatbed laminator at 200–220 °C and 2–4 bar. Unlike epoxy prepreg systems, the polypropylene matrix does not require refrigerated storage or a solvent-based cleaning step before lamination. Panel edges are cut by water jet and sealed by overmolding with polypropylene homopolymer to close the glass–matrix interface and limit water migration. For exterior exposure, the base polypropylene matrix requires ultraviolet stabilization because long-term sunlight causes chain scission and surface microcracking; panels are therefore coated or co-extruded with UV-stable films before assembly. Fire performance is jurisdiction-dependent, and the unmodified IE7010 laminate should not be treated as a fire-rated construction material without testing according to EN 13501-1 and the relevant local building code. Mechanical verification of façade panels includes ISO 527-4:2021 tensile testing, ISO 14125 flexural testing, and ISO 899-1:2017 tensile creep testing at design temperature. The final panel format is typically a modular spandrel or shadow-box unit, with dimensional stability checked after cycling from -20 °C to 70 °C according to the project specification.
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- Avient Polystrand ThermoPro™ IE7010 Unitape Unidirectional Polypropylene-Glass Composite is manufactured under an ISO 9001 quality system and complies with relevant regulatory requirements.
- COA, SDS/MSDS, and related certificates are available upon request. For certificate requests or inquiries, contact: sales8@ascent-chem.com.
Avient Polystrand ThermoPro™ IE7010 Unitape is a continuous unidirectional E-glass fiber reinforced polypropylene thermoplastic composite supplied as a consolidated tape. The nominal fiber loading is 60% by weight, the nominal tape thickness is 0.25 mm, and the density is 1.49 g/cm³ when measured according to ASTM D792. In the fiber direction, supplier-published tensile strength is approximately 517 MPa and tensile modulus is approximately 27.6 GPa, both determined according to ASTM D3039; flexural strength and flexural modulus are approximately 690 MPa and 24.1 GPa, respectively, according to ASTM D790. The product is a fully thermoplastic unidirectional sheet, not a thermoset prepreg, and it contains no reactive styrene or epoxy hardener.
The unidirectional architecture places continuous glass rovings parallel to the longitudinal machine axis within a polypropylene matrix, creating pronounced mechanical anisotropy. The supplier-published values below are representative data and are not design allowables unless independently verified on production coupon stock.
| Parameter | Representative value | Test method |
|---|---|---|
| Nominal fiber content by weight | 60 wt% | ASTM D2584 |
| Density | 1.49 g/cm³ | ASTM D792 |
| Nominal tape thickness | 0.25 mm | — |
| Longitudinal tensile strength | 517 MPa | ASTM D3039 |
| Longitudinal tensile modulus | 27.6 GPa | ASTM D3039 |
| Transverse tensile strength | 20–25 MPa, representative | ASTM D3039 |
| Longitudinal flexural strength | 690 MPa | ASTM D790 |
| Longitudinal flexural modulus | 24.1 GPa | ASTM D790 |
| In-plane Poisson’s ratio | 0.30 | — |
What Processing Window Governs Thermoforming and Lamination of IE7010?
The polypropylene matrix begins to melt at approximately 165 °C and is typically consolidated at 180–210 °C. At platen or belt temperatures below 175 °C, melt viscosity is too high for complete wet-out of thick tape stacks, and interlaminar void content can remain above 3% when measured by ASTM D2734. At temperatures above 230 °C, oxidative degradation of the polypropylene matrix can occur within several minutes, producing a measurable reduction in melt flow rate when tested according to ISO 1133-1:2022. Double-belt lamination lines operated at belt temperatures of 190–205 °C and nip pressures of 0.5–1.5 MPa can reduce void content below 2% at line speeds of 2–6 m/min. Line speed must be reduced when laminate thickness exceeds 5 mm because the glass fiber bed acts as an insulator and slows heat transfer into the core layers.
In compression molding, heated platens at 190–210 °C and molding pressure of 0.5–2.0 MPa are applied after the tape stack reaches core temperature. Tool surfaces below 120 °C can cause premature freeze-off of the matrix and incomplete edge replication. Silicone-based mold release systems should be avoided when post-molding painting or adhesive bonding is required because silicone migration to the surface reduces adhesion. Roll tension during unwinding of 0.25 mm tape should be kept below 5 N/cm; higher tension can split the tape along fiber bundles because transverse tensile strength is below 25 MPa.
High-humidity storage does not plasticize the polypropylene matrix, which absorbs less than 0.01% moisture by ISO 62, but condensation on cold tape surfaces can disrupt fiber wet-out. Conditioning tape at 23 °C and 60% relative humidity for 24 h before processing avoids condensation defects in facilities with uncontrolled temperature swings.
On production-scale double-belt lines, the primary bottleneck is often roll handling rather than consolidation. Unidirectional tape has almost no transverse strength; edge nicks generated by slitting or by contact with misaligned guides propagate as longitudinal splits during tension changes. Lay-up tables with vacuum hold-down and low-tension dancer rolls reduce waste. In insert overmolding, the tape insert is heated by infrared ovens to a surface temperature of 150–170 °C before transfer to an injection mold at 40–80 °C; the polypropylene overmolding resin at 230–250 °C melt temperature provides local reflow at the interface. Clamp force is selected to pack the overmolding resin without crushing the consolidated tape insert, typically 3–5 kN per projected cm² of part area, although machine-specific optimization is required.
When Unidirectional Tape Replaces Short-Glass Injection Molding Feedstock
A short-glass polypropylene compound at 30 wt% glass typically exhibits tensile strength of 80–100 MPa and tensile modulus of 5–6 GPa by ASTM D638. IE7010 at 60 wt% continuous glass provides approximately 517 MPa and 27.6 GPa in the fiber direction by ASTM D3039, roughly five times the tensile modulus at two times the glass content. This comparison is direction-specific; transverse tensile strength of IE7010 is below 25 MPa, whereas short-glass compounds remain substantially isotropic. Consequently, IE7010 is not a direct drop-in for isotropic injection molding grades. Structural parts made from IE7010 require 0/90 cross-ply or quasi-isotropic laminate construction to resist multi-axial service loads. Selective reinforcement is the more common integration method: continuous unidirectional tape is placed in the primary load path, while overmolded short-glass polypropylene forms ribs, bosses, and attachment features.
What Separates IE7010 from Epoxy Prepreg and Woven Organosheet Formats?
Because the matrix is thermoplastic, IE7010 has no B-stage, no exothermic cure, and no refrigerated shelf life. It can be reheated repeatedly, allowing splicing and co-consolidation with additional polypropylene layers. Unlike epoxy prepreg, which typically requires autoclave pressure and vacuum bag debulking, IE7010 is consolidated in a hot press or double-belt lamination line with pressures below 2 MPa. The trade-off is thermoplastic behavior at elevated temperature; sustained load-bearing applications above 90 °C should be validated by creep testing to ISO 899-1. Compared with woven glass-polypropylene organosheet, IE7010 has higher unidirectional stiffness because the fibers are uncrimped. A 0/90 woven fabric introduces fiber crimp that can reduce effective modulus by 10–20% relative to a cross-ply unidirectional tape laminate with the same areal glass content. Woven organosheet handles better during drape and has higher transverse integrity in the fabric plane; IE7010 can split along the fiber direction when formed around tight radii. Blank design must include trim allowances and avoid features that generate transverse tension at the blank edge.
Automotive load floors, underbody shields, battery protective covers, and door module carriers are typical applications for polypropylene-based unidirectional tape. A quasi-isotropic laminate with 50–60% continuous glass content provides bending stiffness and mass reduction when compared with steel or aluminum sheet at equivalent panel geometry; the exact mass delta depends on ribbing and section shape. Polypropylene-based composites are normally classified HB at 3.0 mm in UL 94; vertical burn ratings require flame-retardant modification of the matrix. Because no reactive diluent or solvent is present in the matrix, volatile emission levels are generally low, but emissions from additives and surface treatments should be verified by VDA 277 or VDA 278 where automotive interior criteria apply.
Flame Treatment and Surface Energy Requirements for Adhesive Bonding
Polypropylene has a surface energy typically near 30 mN/m, below the 44–48 mN/m range required for reliable structural adhesive wetting. Flame treatment or corona discharge should raise surface energy to at least 48 mN/m before bonding with methyl methacrylate, polyolefin adhesive, or structural tape. Lap shear strength can be measured by ASTM D3163; after proper activation, failure often occurs in the tape transverse direction rather than at the adhesive interface. For in-mold painting, a polypropylene-compatible adhesion promoter or film treatment is required because the nonpolar matrix resists conventional solventborne primers. If silicone mold release was used, surface activation alone is often insufficient; mechanical abrasion or solvent cleaning may still leave low-energy silicone residues that reduce bond durability.
Because the matrix is polypropylene, IE7010 should not be specified for sustained static load above 90 °C without creep validation, nor for continuous immersion in aromatic hydrocarbons or strong oxidizing acids. Differential thermal expansion is inherent: longitudinal thermal expansion is governed by glass and is typically 6–10 ppm/°C, while transverse expansion is governed by polypropylene and can exceed 100 ppm/°C. Asymmetric laminates can warp when cooled from molding temperature because of this mismatch, so tooling design should account for post-mold shape correction. Cut edges expose glass filaments and should be sealed by overmolding or edge tape in wet service. Regrind from trimming is thermoplastic and recoverable, but the fiber length is reduced to short-glass dimensions and is therefore suitable only as replacement for short-glass polypropylene compound, not for continuous tape applications.
