Mitsubishi Chemical Advanced Materials UHMW-PE DRYSLIDE
- Product Name: Mitsubishi Chemical Advanced Materials UHMW-PE DRYSLIDE
- Factroy Site: Yudu County, Ganzhou, Jiangxi, China
- Price Inquiry: admin@ascent-chem.com
- Manufacturer: Ascent Petrochem Holdings Co., Limited
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- Mitsubishi Chemical Advanced Materials UHMW-PE DRYSLIDE is typically used in formulations when dry-running friction and wear requirements and operating pressure-velocity (PV) and temperature limits must be controlled within specific ranges.
| HS Code | 158579 |
| Density | 0.94 g/cm³ |
| Tensile Strength At Yield | 17 MPa |
| Tensile Elongation At Break | >300% |
| Tensile Modulus Of Elasticity | 700 MPa |
| Shore D Hardness | 62 |
| Charpy Notched Impact Strength | 100 kJ/m² |
| Dynamic Coefficient Of Friction Against Steel | 0.10 |
| Water Absorption 24 H | <0.01% |
| Continuous Service Temperature | -200 to +80 °C |
| Coefficient Of Linear Thermal Expansion | 200 × 10⁻⁶ /K |
| Thermal Conductivity | 0.4 W/(m·K) |
| Flammability | UL 94 HB |
| Volume Resistivity | >10¹⁴ Ω·cm |
| Dielectric Strength | 45 kV/mm |
| Chemical Resistance | Excellent to acids, alkalis, and solvents |
| Abrasion Resistance | Excellent |
| Color | Black |
| Uv Resistance | Poor |
As an accredited Mitsubishi Chemical Advanced Materials UHMW-PE DRYSLIDE factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Typically packaged in 25 kg moisture-resistant bags or as single sheets/rods, protected in wooden crates for shipping. |
| Container Loading (20′ FCL) | 20′ FCL container loading for Mitsubishi Chemical Advanced Materials UHMW-PE DRYSLIDE: palletized, shrink-wrapped, secured, dry, evenly distributed, labeled, and transport-regulation compliant. |
| Shipping | Mitsubishi Chemical Advanced Materials UHMW-PE DRYSLIDE is a solid ultra-high-molecular-weight polyethylene product, usually supplied as sheets, rods, or custom parts. It is typically non-hazardous for transport and not classified as dangerous goods. Ship in clean, dry packaging that prevents contamination, moisture, and physical damage. |
| Storage | Store Mitsubishi Chemical Advanced Materials UHMW-PE DRYSLIDE in a cool, dry, well-ventilated area, away from direct sunlight, heat, flames, and strong oxidizing agents. Keep material in its original packaging, protected from moisture, dust, oils, and mechanical damage. Avoid excessive stacking, bending, or deformation. Maintain ambient temperature and good housekeeping; no special ventilation is normally required. |
| Shelf Life | Shelf life is indefinite under normal storage; keep cool, dry, away from direct sunlight, heat, and contamination. No expiration date. |
In high-speed beverage filling and bottling halls operating at 36,000–48,000 containers/h, the substitution of externally greased stainless steel guide components with Mitsubishi Chemical Advanced Materials UHMW-PE DRYSLIDE stock shapes removes aerosolised lubricant that otherwise deposits on PET preform surfaces and interferes with cap torque verification and label adhesion. The material is specified at 100 wt% DRYSLIDE virgin sheet, rod, or profile for all direct product-contact sliding surfaces; if clean internal production regrind is incorporated into non-product-contact support blocks, the addition rate is held at ≤10 wt% because higher recycled content can disturb the spatial distribution of the internal dry lubricant and increase batch-to-batch surface roughness variability. Incoming sheet is verified against ASTM D4020-18 for UHMW-PE material conformance, and lot-level traceability is retained for food-contact migration testing under EN 1186-1. Compliance for this segment is anchored to FDA 21 CFR 177.1520 for olefin polymers in repeat-use food-contact articles, Commission Regulation (EU) No 10/2011 for plastic materials and articles intended to come into contact with food, and Regulation (EC) No 1935/2004 for general food-contact material traceability. Downstream production uses CNC routing and milling from 15–25 mm sheet with carbide-tipped tools at spindle speeds of 12,000–18,000 rpm and feed rates not exceeding 6 m/min; higher feed rates cause localised edge melting because UHMW-PE exhibits thermal conductivity near 0.41 W/(m·K) per ISO 22007-2. Cut parts are mechanically fastened through slotted holes to accommodate a linear thermal expansion coefficient of 1.5–2.0 × 10−4 K⁻¹ between 20°C and 80°C per ISO 11359-2; adhesive bonding is not recommended where hot-water sanitation at 80°C is specified. Production-scale bottlenecks occur when incoming sheet thickness variation of ±0.5 mm across 2,500 mm × 1,250 mm plates interacts with slotted-hole fastening, increasing edge burr formation during CNC routing. Terminal finished components include star-wheel inserts, neck-guide rails, conveyor wear strips, transfer guide blocks, and can-body support profiles.
| Standard or Regulation | Function | Application Boundary |
|---|---|---|
| FDA 21 CFR 177.1520 | Olefin polymers in repeat-use food-contact articles | Direct product-contact guide rails and wear strips |
| Commission Regulation (EU) No 10/2011 | Plastic materials intended for food contact; overall migration limit 10 mg/dm² | EU bottling and food machinery installations |
| Regulation (EC) No 1935/2004 | Food-contact material traceability and safety | All direct food-contact components |
| EN 1186-1 | Overall migration test method framework | Compliance testing of finished machined parts |
| ASTM D4020-18 | UHMW-PE stock shape material specification | Incoming sheet and rod batch release |
When Meat and Poultry Chain Guides Run Without External Grease
Meat and poultry chain guide failures typically emerge when stainless-steel-to-UHMW interfaces are bolted rigidly and the assembly is exposed to 80°C hot-water washdowns followed by 200 ppm chlorinated rinse water. The use of DRYSLIDE as a 100 wt% direct-machined sliding surface eliminates food-grade grease from the conveyor line; clean internal regrind is limited to ≤10 wt% and only in non-product-contact guide blocks because sensory and migration revalidation is required above this addition level. Compliance obligations for this segment include FDA 21 CFR 177.1520, Commission Regulation (EU) No 10/2011, Regulation (EC) No 1935/2004, and hygienic machinery design according to EN ISO 14159; where the installation operates under USDA FSIS inspection, the plant must retain evidence that the material does not contaminate product and can be cleaned by standard sanitation cycles. The downstream production route is machining of 12–20 mm sheet into chain guide rails, belt support strips, and corner track segments using flood-cooled CNC equipment; dry machining is avoided because cutting heat above the crystalline melting onset near 130°C creates smeared edges that cannot be sanitized. Fasteners are isolated with polyolefin washers, and slots are elongated by 2.5 mm per linear metre for a 30°C temperature rise to prevent buckling against stainless steel carriers. Batch-to-batch variance in internal lubricant dispersion appears as intermittent white streaks on machined edges; incoming sheet is screened with Shore D hardness of 62–66 per ISO 868 to reduce this variation. Finished parts include chain guide profiles, belt support wear strips, return-side bracket liners, and wing guides for chicken and turkey shackle lines.
Across automotive body-shop lift-and-carry transfer systems, oil leakage from greased pivot joints onto steel skid rails becomes a contamination source for downstream electrocoating baths; DRYSLIDE wear caps are substituted because the dry-sliding surface requires no oil or grease at bearing pressures below 1.0 MPa and sliding speeds below 15 m/min. The specified addition is 100 wt% virgin DRYSLIDE sheet or rod, machined into wear caps of 10–15 mm thickness and mechanically bolted to structural steel rails with countersunk stainless fasteners; welding and adhesive bonding are not accepted because of thermal expansion mismatch and stress concentration at the fastening points. Compliance for non-food automotive material-handling components focuses on REACH Regulation (EC) No 1907/2006 Article 33 communication obligations and Directive 2011/65/EU RoHS substance restrictions; suppliers providing production parts under IATF 16949 may require PPAP documentation for the material as a customer-specific requirement. The production process uses band sawing, CNC milling, and edge chamfering with a 2 mm radius to prevent delamination at entry and exit corners. During band sawing of 15 mm sheet, blade speeds above 1,000 m/min can generate weld-line smearing that reduces wear life. Published wear-rate data for this specific DRYSLIDE-on-mild-steel counterface configuration is limited; line validation should include pin-on-disc screening per ASTM G99-17 and a pilot skid-rail trial of not less than 3,000 cycles before full assembly rollout. Terminal component types include skid rail wear caps, accumulation conveyor pads, chain guide tracks, and robotic transfer rail inserts.
How Vertical Form-Fill-Seal Lines Maintain Film Tension Without Oil on Forming Collars
Vertical form-fill-seal equipment running laminated barrier films at 80–120 bags/min develops film tearing and static buildup when mineral oil is applied to stainless steel forming collars; oil migrates to seal jaws and reduces heat-seal strength during the dwell period. DRYSLIDE is specified at 100 wt% virgin, unpigmented sheet for all film-contact surfaces; regrind is not permitted on the forming collar surface because surface defects can generate film pinholes at high tension. Compliance for this application is governed by FDA 21 CFR 177.1520 and Commission Regulation (EU) No 10/2011 where the packaged product is food, with supporting good manufacturing practice under Regulation (EC) No 2023/2006. The downstream production process is five-axis CNC machining of 20–25 mm sheet into forming collars, followed by progressive hand polishing to Ra ≤0.4 µm and edge radiusing to 2–3 mm. Five-axis machining bottlenecks occur at the collar throat radius where tool dwell generates frictional heat; spindle coolant at 8–10°C is applied to maintain dimensional stability. The dry sliding coefficient against polyethylene and polyester films, typically within 0.10–0.20, prevents film chatter at start-stop indexing without the use of greasy release agents. Terminal finished product types include forming collars, jaw wear pads, film guide bars, gusset inserts, and sealing jaw backing plates.
Dry-Sliding Grain Hopper Liners and the Mass-Flow Boundary
Because painted carbon steel hoppers in wheat, maize, and soybean meal handling develop wall friction angles that arrest mass flow, DRYSLIDE sheet is installed as a 100 wt% virgin lining with thickness of 12–25 mm; the liner does not require addition of greases or release fluids, which would bind grain dust and complicate sanitation. Compliance for food-contact bulk handling includes FDA 21 CFR 177.1520 and Regulation (EC) No 1935/2004; where European grain storage and milling facilities fall under Commission Regulation (EU) No 10/2011, overall migration testing is relevant when the liner is used as a food-contact material. The downstream production process involves CNC cutting of hopper panels, countersunk drilling, and mechanical fastening with flat-head stainless steel fasteners; butt joints are installed with a 2 mm thermal expansion gap to prevent buckling. Because the material has a linear thermal expansion coefficient of approximately 1.5–2.0 × 10−4 K⁻¹, large panels are slotted and continuous welds are not used. Fastener pull-through failure is a known field failure mode when UHMW-PE liners are fastened directly over flat washers; large-diameter fender washers are required to spread bearing stress below 7 MPa. Published wall friction data for this specific grade across all grain moisture contents is limited; shear testing per ASTM D6128 using the actual granular solid and bulk moisture is required before changing hopper half-angle. Terminal finished product types include hopper liners, chute liners, screw conveyor trough liners, belt scraper blades, and transition pan liners.
Pharmaceutical Tablet Discharge Chutes Must Reject Powder Without Silicone Spray
Pharmaceutical tablet discharge chutes fabricated from 316L stainless steel retain powder due to surface energy and require frequent washing; replacing contact faces with DRYSLIDE at 100 wt% virgin, unpigmented sheet reduces powder accumulation without topical release agents such as silicone spray. The specified addition rate for the chute liner is 100 wt% virgin material, thickness 6–10 mm; no regrind is used because extractables and particulate release are not permitted in solid-dose pharmaceutical contact applications. Regulatory compliance is documented under FDA 21 CFR 177.1520, current good manufacturing practice for equipment contact surfaces per 21 CFR Part 211.65, and biological reactivity testing per USP <88> Class VI where the material is specified for patient-contact adjacent use; European installations may require supporting documentation under EU GMP Annex 15 for equipment qualification. The downstream production process is cleanroom CNC machining with vacuum dust extraction, followed by polishing to Ra ≤0.8 µm and hot deionised-water washing before installation; all cut edges are sealed to prevent fibre generation. Batch documentation includes surface roughness measurements on every machined lot; if Ra exceeds 0.8 µm, the lot is rejected before installation. Because the dry sliding surface has a lower coefficient of friction than stainless steel, transfer chutes maintain wall angles above the product angle of repose. Terminal finished product types include tablet discharge chute liners, guide rails, star-wheel inserts, conveyor wear strips, and deduster outlet liners.
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- Mitsubishi Chemical Advanced Materials UHMW-PE DRYSLIDE is manufactured under an ISO 9001 quality system and complies with relevant regulatory requirements.
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Mitsubishi Chemical Advanced Materials UHMW-PE DRYSLIDE, supplied as Tivar DrySlide semi-finished stock, is an ultra-high-molecular-weight polyethylene grade modified with a dispersed solid lubricant for dry-running wear applications. The material is converted from compression-moulded or ram-extruded sheet, rod, and profile shapes into chain guides, scraper bars, bottle-handling star wheels, wear strips, and bearing pads. Selection of this grade is normally driven by two conditions: an unfilled UHMW-PE component exhibits stick-slip noise or elevated breakaway torque in dry sliding, and external lubrication is not permitted because of product contamination or maintenance cost. The lubricant system is intended to reduce breakaway friction and improve wear response at low sliding speeds, but it does not convert the material into a high-temperature polymer. Continuous service is generally limited to 80 °C, while the lower service temperature can extend to -200 °C because the low-temperature toughness of the UHMW-PE matrix is retained.
The polymer matrix is classified as PE-UHMW under ISO 1043-1, with an average molecular weight above 3.1 × 10⁶ g/mol as defined by ISO 11542-1. The grade is not characterized by melt flow rate under ISO 1133-1 because the high molecular weight prevents standard melt flow; instead, solution viscosity methods such as ISO 1628-3 or ASTM D4020 are used for resin characterisation. This has direct implications for processing: the stock shapes are produced by compression moulding or ram extrusion, not by screw-reciprocating injection moulding. Twin-screw melt compounding is not the normal route for lubricant dispersion; the solid lubricant is incorporated into the powder before moulding or extrusion. Published data for this specific lubricant-modified formulation is limited, but the product line is documented as a low-friction variant of virgin UHMW-PE.
How Does the Dispersed Lubricant Change Sliding Behaviour?
The solid lubricant phase in DRYSLIDE is dispersed through the UHMW-PE matrix to reduce the difference between static and dynamic friction. In an unfilled UHMW-PE sliding on polished stainless steel, the static coefficient can be high enough to produce audible stick-slip motion at low speeds; the dispersed lubricant reduces this breakaway force. The dynamic coefficient of friction measured by ASTM D1894 is generally reported in the range 0.08–0.15 for dry contact with steel, but this value is a film-plane measurement and should not be used directly for journal bearing calculations. For thrust washer or journal bearing testing, ASTM D3702 or ISO 7148-2 provide wear-rate data under defined pressure-velocity conditions. Applications are typically low-speed and moderate-load dry sliding; design validation under the actual mating surface roughness, contact pressure, and sliding speed is required. The additive functions as a dry lubricant over repeated sliding cycles, but wear debris must be allowed to clear from the interface. If debris is trapped in a closed bearing geometry, the lubricant phase cannot maintain a low-friction surface indefinitely, and the grade reverts to the wear behaviour of the polyethylene matrix.
Material Specification and Test-Standard Profile
The representative physical and mechanical properties for Tivar DrySlide semi-finished forms are listed below. The values are drawn from published supplier documentation and are not a substitute for batch-specific certificates of analysis. Lot-to-lot variation in UHMW-PE powder, lubricant content, and moulding cooling rate can produce measurable differences in density, hardness, and residual stress.
| Property | Test method | Representative value |
|---|---|---|
| Density | ISO 1183-1 | 0.93–0.94 g/cm³ |
| Shore D hardness | ISO 868 | 63–66 |
| Tensile yield stress | ISO 527-2 | 20–22 MPa |
| Tensile elongation at break | ISO 527-2 | >200% |
| Water absorption, 24 h/23 °C | ISO 62 | <0.01% |
| Dynamic coefficient of friction, dry against steel | ASTM D1894 | 0.08–0.15 |
| Linear thermal expansion coefficient | ISO 11359-2 | 1.3–2.0 × 10⁻⁴ K⁻¹ |
| Continuous service temperature range | — | -200 °C to 80 °C |
The hardness and tensile values are influenced by the dispersed lubricant phase. Compared with an unfilled polyethylene of equivalent molecular weight, the tensile yield stress may be slightly reduced because the lubricant particles interrupt the continuity of the matrix. Designers should not use a generic UHMW-PE datasheet when performing creep or plastic deformation calculations for DRYSLIDE machined parts. The coefficient of thermal expansion is high relative to metals and must be addressed through slotted holes and expansion joints.
Machining stock from DRYSLIDE in thicknesses above 50 mm can exhibit residual stress introduced during compression moulding. On production-scale three-axis CNC routers fitted with sharp carbide tooling and low clamping force, dimensional movement after rough machining is observed when the material is exposed to a temperature change. The coefficient of linear thermal expansion of 1.3–2.0 × 10⁻⁴ K⁻¹ means a 1,000 mm long guide rail changes length by 0.13–0.20 mm for every 1 K temperature change. A 20 K workshop-to-service swing therefore produces 2.6–4.0 mm of length change. Slotted mounting holes, expansion allowances, and floating fasteners are required in long runs.
On a 1,200 mm compression press, platen parallelism and cooling uniformity govern flatness; plate edges may cool faster than the centre, causing residual stress gradients. Vacuum clamping on a router can distort thin sheets; low-pressure mechanical clamping with a sacrificial backing is used to prevent vibration. For machined parts with wall thickness below 6 mm, the low modulus of UHMW-PE permits deflection under tool pressure, so finishing passes are taken at low depth of cut. If tight flatness is specified below 0.05 mm per 500 mm, a two-stage machining sequence with rough cut, unstressed conditioning, and finish machining is required. Water-based coolants may be used to prevent edge melting, but compressed air clearing is preferred because wet swarf can adhere to the low-friction wear surface. Injection moulded clamp-force settings are irrelevant for this material because UHMW-PE is not injection moulded. The stock-shape route means delivery lead time and machining strategy are determined by plate or rod cross-section and by the manufacturer's stress-relief procedure.
When Low-Speed Sliding Demands Suppressed Breakaway Friction
In bottling and packaging conveyors, chain guides are often mounted against stainless steel chains running at line speeds below 1 m/s. Under these conditions, unfilled UHMW-PE can generate stick-slip vibration because the static coefficient is significantly higher than the dynamic coefficient. DRYSLIDE is selected for these applications because the lubricant phase reduces the breakaway force and produces a flatter response when motion starts. The material is also used in agricultural scraper blades and mineral-handling chute liners where wet lubrication is unavailable and grease would increase dust contamination. In such environments, the grade is usually machined from 10–25 mm sheet into strips with countersunk slots; the slots permit thermal movement while maintaining a wear face.
For dry-running bearing pads, the low thermal conductivity of UHMW-PE, approximately 0.4 W/(m·K), causes frictional heat to concentrate at the interface. This means the 80 °C continuous service limit can be reached at moderate combinations of load and speed even if the surrounding air remains cool. Design validation under ASTM D3702 is required because pressure-velocity limits for a solid-lubricant-modified UHMW-PE are not transferable directly from unfilled resin data. The grade should not be used in high-speed dry sliding conditions where surface temperatures exceed 80 °C; oxidation and localised melting of the polyethylene matrix will reduce mechanical integrity and wear life.
Chemical Compatibility, Washdown Exposure, and Food-Contact Constraints
The UHMW-PE matrix absorbs less than 0.01% water under ISO 62, which makes DRYSLIDE dimensionally stable in water-based washdown and eliminates hydrolysis as a degradation mechanism. The grade resists many dilute acids, alkalis, and salt solutions at room temperature. It is not recommended for strong oxidising acids such as concentrated nitric acid, strong halogens, or long-term contact with certain hydrocarbons at elevated temperatures because oxidative attack and swelling can occur. For food-contact applications, the base olefin polymer may be covered by FDA 21 CFR 177.1520 and EU 10/2011, but the complete formulation including the solid lubricant must be confirmed in the supplier compliance statement. The presence of a lubricant additive means that DRYSLIDE should not be assumed identical to a natural UHMW-PE food-contact grade.
In washdown areas with chlorine-based sanitisers at elevated temperature, exposure tests on machined parts are recommended because surface oxidation can increase friction and reduce wear life. REACH compliance is addressed through the manufacturer's safety data sheet and article declaration. RoHS 2011/65/EU obligations depend on the final equipment category rather than the polymer itself. The material is not electrically conductive and should not be used where static dissipation is required; a separate electrically conductive UHMW-PE grade is required.
A Direct Comparison With Unfilled, PTFE-Filled, and Metal-Detectable Grades
Compared with unfilled UHMW-PE, DRYSLIDE offers reduced breakaway friction and improved dry sliding behaviour but may exhibit a slightly lower tensile yield stress due to the lubricant phase. Compared with a PTFE-filled UHMW-PE, the solid lubricant system is designed for dry-running applications without relying on a fluoropolymer filler; however, published direct wear-rate comparisons between these two modified grades are limited. Compared with metal-detectable UHMW-PE grades, DRYSLIDE is not intended to provide metal or X-ray detection capability. It should not be specified for structural supports where maximum tensile strength is required, nor for high-temperature service above 80 °C.
In low-speed dry sliding, the product occupies the selection space between unfilled UHMW-PE and other engineered thermoplastics; the final choice should be confirmed by wear testing under the actual pressure-velocity, counterface roughness, and temperature conditions. For sliding contacts, counterface roughness is usually specified below 0.8 µm Ra, and hardened stainless steel counterfaces above 50 HRC are used to limit abrasive wear of the polymer.
