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reSound™ X RS1200-0215 Cleanable 15% Filled Chemical Resistant Polylactic Acid

    • Product Name: reSound™ X RS1200-0215 Cleanable 15% Filled Chemical Resistant Polylactic Acid
    • Factroy Site: Yudu County, Ganzhou, Jiangxi, China
    • Price Inquiry: admin@ascent-chem.com
    • Manufacturer: Ascent Petrochem Holdings Co., Limited
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    Specifications
    HS Code 310155
    Product Name reSound™ X RS1200-0215 Cleanable 15% Filled Chemical Resistant Polylactic Acid
    Material Base Polylactic Acid (PLA)
    Filler Content 15%
    Filler Type Mineral
    Chemical Resistance Resistant to cleaning chemicals
    Cleanability Cleanable
    Density 1.24 g/cm³
    Tensile Strength 40 MPa
    Tensile Modulus 3500 MPa
    Flexural Strength 65 MPa
    Flexural Modulus 3800 MPa
    Notched Izod Impact 30 J/m
    Heat Deflection Temperature At 0 45 Mpa 85 °C
    Vicat Softening Temperature 95 °C
    Processing Method Fused Deposition Modeling (FDM)
    Print Temperature 190-220 °C
    Bed Temperature 45-60 °C
    Filament Diameter 1.75 mm
    Color Natural

    As an accredited reSound™ X RS1200-0215 Cleanable 15% Filled Chemical Resistant Polylactic Acid factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.

    Packing & Storage
    Packing reSound™ X RS1200-0215 is packaged as a 1 kg filament spool, sealed in foil with desiccant inside a labeled cardboard box.
    Container Loading (20′ FCL) 20′ FCL loaded with reSound™ X RS1200-0215 Cleanable 15% Filled Chemical Resistant Polylactic Acid, palletized and shrink-wrapped for safe transport.
    Shipping reSound™ X RS1200-0215 Cleanable 15% Filled Chemical Resistant Polylactic Acid ships as a non-hazardous, solid polymer in sealed moisture-barrier bags or containers. Store cool and dry, away from heat, sunlight, and ignition sources. No special DOT, IMDG, or IATA dangerous-goods classification normally applies. Follow the SDS and local regulations.
    Storage Store in a cool, dry, well-ventilated area away from heat, sparks, open flames, and direct sunlight. Keep containers tightly sealed to prevent moisture absorption; use desiccant in sealed bags or containers. Maintain moderate room temperature, ideally below 30°C (86°F). Avoid strong acids, bases, and solvents. Store in original packaging and label clearly.
    Shelf Life Shelf life is 12 months from date of manufacture when stored in original unopened packaging at 20–25°C and below 50% relative humidity.
    Application of reSound™ X RS1200-0215 Cleanable 15% Filled Chemical Resistant Polylactic Acid

    Why Do Airless Cosmetic Closures Require a Cleanable 15% Filled PLA?

    In airless cosmetic packaging, the primary material requirement is resistance to ester-based emollients, volatile silicones, and secondary operations that can induce environmental stress cracking in unfilled polylactic acid. The reSound™ X RS1200-0215 Cleanable 15% Filled Chemical Resistant Polylactic Acid is processed at 100 wt% as supplied because the 15 wt% mineral filler is already compounded and does not require downstream let-down. Color is introduced via a PLA-compatible masterbatch at 2 wt% to 4 wt%, while external lubricant addition is held below 0.3 wt% to preserve weld-line strength at snap-fit undercuts. Regulatory documentation for cosmetic packaging components is structured around Regulation (EC) No 1223/2009 for cosmetic product safety, Regulation (EC) No 1907/2006 for REACH substance communication, Regulation (EU) 2025/40 on packaging and packaging waste, and Directive 2011/65/EU for RoHS compliance where metalized or electronic fitments are assembled. Drying is performed in a desiccant dryer at 80 °C for 4 h until residual moisture is 250 ppm or lower, because PLA ester linkages hydrolyze at processing temperatures when moisture exceeds 0.025 wt%. Injection molding is executed on an electric machine with a barrel L/D ratio of 20:1 to 24:1, using a reverse barrel profile of 175 °C at the feed throat and 205 °C at the nozzle, a mold temperature of 25 °C to 35 °C, and clamp force of 80 t to 120 t for 8-cavity to 16-cavity hot-runner tools. Tool cavity surfaces are polished to SPI A2 or SPI B1 finish to produce cleanable surfaces without secondary lacquering. Chemical resistance testing for finished parts follows ASTM D543-21 immersion protocols using isododecane, dimethicone, and caprylic/capric triglyceride test fluids, with surface change assessed according to ISO 4628-1:2016. Terminal finished product types include airless pump collars, jar bodies, compact frames, and lipstick sleeves for color cosmetics.

    Consumer electronic enclosure production using the reSound™ X RS1200-0215 grade is constrained by the need to balance isopropanol resistance against low-temperature impact performance in thin-wall shells. The compound is introduced at 100 wt% as the primary resin, with regrind limited to 20 wt% maximum for internal brackets and non-visible rear covers; visible front shells use 0 wt% regrind to avoid surface splay. If static dissipation is required for protected-area handling, a PLA-compatible antistatic masterbatch is added at 3 wt% to 6 wt%, but this must be validated for effect on chemical resistance before release. Safety evaluation for end products follows IEC 62368-1:2023 for audio/video and information technology equipment, with flame class tested at final wall thickness according to UL 94. Unfilled PLA compounds of this thermal class typically reach HB, and V-0 performance requires flame-retardant systems that are not present in this compound. Drying is conducted at 80 °C for 4 h to a moisture content below 0.025 wt%, after which parts are injection molded at a melt temperature of 190 °C to 210 °C and a mold temperature of 25 °C to 40 °C. The screw L/D is specified at 22:1, with a compression ratio of 2.5:1 and back pressure of 0.5 MPa to 1.0 MPa to maintain filler dispersion without excessive shear heating. Thin-wall sections are maintained at 1.5 mm to 2.5 mm to avoid sink marks and warpage. Terminal products include electric toothbrush handle shells, remote-control front covers, and small appliance bezels, where cavity texture in the VDI 24 to VDI 33 range is applied to reduce visible fingerprints and improve wipe-down cleanability after isopropanol exposure.

    Household Cleaner Contact Molding with Filled PLA

    For trigger spray bodies, dosing caps, and vacuum cleaner bumper housings, the dominant degradation pathway is stress cracking caused by repeated exposure to diluted sodium hypochlorite and hydrogen peroxide-based surface disinfectants. The reSound™ X RS1200-0215 compound is used at 100 wt% when maximum chemical resistance is required, or blended with unfilled PLA at 50 wt% to 50 wt% to reduce effective filler loading to 7.5 wt% for snap-fit undercuts with lower flexural modulus. This blend ratio is established through melt-compounding on a twin-screw extruder with 40:1 L/D and a temperature profile of 170 °C to 195 °C before pelletizing. Compliance for household cleaning article components is evaluated against Regulation (EC) No 1907/2006 for REACH, Directive 2011/65/EU for RoHS, and Regulation (EC) No 648/2004 for detergent-related article constituents. Chemical resistance is tested under ASTM D543-21 for continuous immersion and ISO 175:2010 for limited-time chemical exposure. Injection molding of trigger bodies uses an electric machine with a shut-off nozzle, melt temperature 185 °C to 205 °C, mold temperature 25 °C to 35 °C, and injection speed 30 mm/s to 80 mm/s. In-mold labeling or direct pad printing is possible when surface corona treatment is held above 42 mN/m; published data for this specific configuration is limited and must be validated per label adhesion standard ISO 2409:2020. Terminal finished parts include spray trigger bodies, dosing caps for concentrated cleaner refills, and vacuum cleaner bumper shells, each with accessible surfaces radiused above 1.0 mm to permit wipe-down disinfection without soil entrapment.

    ConfigurationDrying requirementMelt temperatureMold temperatureReference method
    Cosmetic airless closure80 °C / 4 h to 250 ppm175 °C205 °C25 °C35 °CASTM D7191-18
    Electronic housing80 °C / 4 h to 0.025 wt%190 °C210 °C25 °C40 °CASTM D7191-18
    Household cleaner contact part80 °C / 4 h to 0.02 wt%185 °C205 °C25 °C35 °CISO 1133-1:2022

    Non-patient-contact diagnostic equipment enclosures and laboratory benchtop instrument covers are subjected to daily disinfection with 70% isopropanol, quaternary ammonium compounds, and 3% hydrogen peroxide, which makes chemical resistance a threshold requirement before mechanical design optimization. The reSound™ X RS1200-0215 compound is processed at 100 wt% as supplied, with color masterbatch held to 1 wt% to 2 wt% to minimize extractables. Regrind is excluded for visible housing components and limited to 10 wt% for internal structural supports where ISO 10993 testing is not required. Regulatory documentation for laboratory equipment follows IEC 61010-1:2020 for safety of electrical equipment for measurement, control, and laboratory use. Biocompatibility data, when skin contact is incidental, are generated under ISO 10993-5:2009 for cytotoxicity and ISO 10993-10:2010 for irritation. Quality system alignment is governed by ISO 13485:2016 where the part is integrated into a registered medical device. Molding is performed in ISO Class 8 or cleaner conditions using an electric injection molding machine with a shut-off nozzle, a melt temperature of 180 °C to 200 °C, and a mold temperature of 30 °C to 45 °C to maintain flatness across housing faces. Pre-drying at 80 °C is mandatory when ambient relative humidity exceeds 60%, with residual moisture controlled to 0.02 wt% or below. Chemical resistance is verified through ISO 175:2010 immersion protocols using the actual disinfectant chemistry, not surrogate fluids. Terminal finished products include laboratory analyzer housings, pipette holder bodies, benchtop reader covers, and non-fluid-path reagent cassette shells, with surface finish specified at SPI B1 or SPI B2 to reduce microbial adhesion and permit wipe-down cleaning.

    When Returnable Cosmetic Distribution Trays Encounter Sodium Hypochlorite

    In returnable cosmetic distribution logistics, trays are washed in centralized cleaning stations with diluted sodium hypochlorite at 500 ppm to 1000 ppm available chlorine and anionic surfactant solutions, conditions that can embrittle ABS and polystyrene after repeated thermal drying cycles. The reSound™ X RS1200-0215 compound is introduced as the structural matrix at 100 wt%, and if lower stiffness is required for snap-fit stacking lugs, it is blended with unfilled PLA at a ratio of 70 wt% compound to 30 wt% unfilled PLA, giving an effective filler content of 10.5 wt%. Compliance for reusable transport packaging is documented under Regulation (EU) 2025/40, Regulation (EC) No 1907/2006 for REACH, and FDA 21 CFR 174.5 for indirect food additive status where the tray may be placed adjacent to primary cosmetic packaging without food contact being excluded. Production is carried out on a high-volume injection molding machine with a clamp force of 150 t to 250 t, melt temperature 185 °C to 205 °C, mold temperature 20 °C to 30 °C, and cycle time limited by cooling channels conformal to the tray geometry at 8 mm to 10 mm diameter. Molding tools use sequential valve-gate control to prevent knit lines at load-bearing corners, and cavity finish is maintained at SPI B2 for cleanability. Terminal products include returnable eyeshadow palette trays, lipstick transfer trays, and compact assembly shippers, with chemical resistance validated by ASTM D543-21 using the actual cleaning solution and surface evaluation per ISO 4628-1:2016 after 50 simulated wash cycles.

    Point-of-sale display components in prestige beauty environments are wiped with 70% isopropanol or ethanol-based cleaners between planogram resets, and the material must resist haze formation over multiple cleaning cycles. The reSound™ X RS1200-0215 compound is used at 100 wt% for visible display risers and tester stands, with color concentrate from 2 wt% to 5 wt% depending on brand color matching and opacity requirements. Compliance for retail fixture components is typically limited to Regulation (EC) No 1907/2006 for REACH and Directive 2011/65/EU for RoHS. Flammability for point-of-purchase items is assessed under UL 94 at the final thickness, with HB classification commonly accepted for temporary retail displays, while V-0 is not achievable without additives that compromise chemical resistance and surface cleanability. Processing uses a mid-sized injection molding machine with 100 t to 180 t clamp force, a melt temperature of 180 °C to 200 °C, a mold temperature of 25 °C to 35 °C, and rapid tool-change features for short-run seasonal display programs. Pre-drying at 80 °C for 3 h is sufficient when residence time is below 5 min and melt temperature is kept under 200 °C. Terminal finished products include display risers, tester stands, shelf edge rails, and gondola trim strips, where visible surfaces are textured to VDI 27 to VDI 30 to hide micro-scratches while maintaining wipe-down cleanability.

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    Certification & Compliance
    More Introduction

    reSound™ X RS1200-0215 is a polylactic acid compound containing 15% by weight filler, supplied as a cleanable and chemical-resistant grade for rigid injection-molded or extruded components. The model designation does not replace a full technical data sheet: filler composition, particle size distribution, surface treatment, and polymer molecular weight are lot-controlled variables that affect chemical resistance, shrinkage, and cleanability. The product is differentiated from unfilled PLA by lower mold shrinkage and higher short-term heat resistance under load; it is differentiated from more heavily filled PLA grades by a wider processing window and lower melt pressure at equivalent throughput. Application candidates include appliance housings, reusable packaging, medical device enclosures, and industrial guards exposed to neutral or mildly alkaline cleaning solutions at ambient temperature. Food-contact status is not conferred by the cleanability designation and must be verified separately under the intended use conditions.

    What Limits Chemical Resistance in Filled PLA Under Alkaline Cleaning?

    The aliphatic ester linkages in PLA are susceptible to hydrolysis. In alkaline cleaning media, hydroxide ion attack at the carbonyl carbon proceeds by pseudo-first-order kinetics, with rate increasing with pH, temperature, and absorbed water. For a filled grade such as RS1200-0215, the filler-polymer interface can dominate chemical resistance because incomplete wetting creates microcapillaries that transport cleaning agent into the bulk. Chemical resistance should therefore be evaluated by ISO 175:2010 immersion testing with the actual cleaning solution, not by water contact alone. Reported data should include mass change, visual surface change, and tensile strength retention after exposure cycles. Tensile testing is performed to ASTM D638-14 Type I geometry at 5 mm/min crosshead speed; flexural property retention can be measured by ISO 178:2019 at 2 mm/min. For alkaline cleaning, test solutions at pH 10, 11, and 12 identify the threshold above which embrittlement occurs. Published hydrolysis studies for aliphatic polyesters report apparent activation energies between 50 kJ/mol and 80 kJ/mol; within the 20°C to 60°C service window, the rate approximates a doubling per 10°C temperature increase. The manufacturer’s published data for RS1200-0215 under these specific alkaline conditions is limited; validation should be performed on production-representative plaques. Avoid amine-based processing aids and strongly alkaline cleaners above pH 12, because amines can accelerate ester aminolysis and produce surface whitening.

    Predrying, Rheology, and Screw Configuration on Manufacturing Lines

    On production-scale equipment, RS1200-0215 must be dried to a residual moisture level below 250 ppm before melt processing. A desiccant dryer with a supply-air dew point no higher than -40°C is required. Drying at 60°C to 80°C for 4 h to 6 h is typical for PLA compounds; lot-specific drying curves should replace generic guidance. Above melt temperature 200°C, wet PLA degrades rapidly by random chain scission, producing lactic acid, lactide, and a drop in melt viscosity. In injection molding, a general-purpose screw with 20:1 to 24:1 L/D and a compression ratio of 2:1 to 3:1 is used. Barrel temperatures from 180°C to 210°C and a mold temperature of 20°C to 30°C are standard for unfilled PLA; filled grades may require the upper end of the barrel range and a mold temperature of 30°C to 60°C if dimensional stability is critical. Back pressure should be kept below 50 bar to minimize shear heating and residence time. A filler content of 15% raises melt viscosity relative to neat PLA; therefore, screw recovery speed may need to be reduced or barrel temperature increased by 5°C to 10°C to maintain shot consistency. Lotus-type splay, delamination, or yellowing at the gate indicates residual moisture or thermal degradation and should trigger immediate dryer verification.

    When the 15% Filler Level Replaces Neat PLA in Rigid Parts

    Substituting RS1200-0215 for neat PLA changes the property envelope. Unfilled PLA typically exhibits high tensile strength and high modulus but low impact resistance, and its low crystallization rate under rapid cooling produces low heat deflection temperature. At 15% filler loading, the compound is expected to show reduced mold shrinkage compared with unfilled PLA, because the inorganic fraction has a lower coefficient of linear thermal expansion than the polymer matrix and inhibits concentrated shrinkage during cooling. Mold shrinkage can be quantified by ASTM D955-08 or ISO 294-4:2018. Flexural modulus generally increases; tensile elongation and notched Izod impact generally decrease. These effects are amplified at higher filler loadings. At 15%, the material retains more melt flow than a 30%-filled grade and is less likely to cause excessive screw torque or wear compared with abrasive fillers at high concentration. Transparent packaging applications are not suitable for the filled grade because the filler scatters visible light. Surface gloss is lower than neat PLA. Cleanability after soiling depends on surface roughness; if the filler is poorly dispersed, injection-molded surfaces can develop microscopic pits that retain cleaning residues. Processors should inspect plaque surfaces at 20× magnification and measure surface roughness with a contact stylus instrument according to ISO 21920-2:2021 before committing to cleanroom or hygienic applications. Published data for this specific configuration is limited, and the above relationships are qualitative starting points rather than lot-specific values.

    The supplier’s documentation package should provide a certificate of analysis against the requested grade, a safety data sheet, and declaratory statements for RoHS Directive 2011/65/EU and REACH Regulation 1907/2006. These declarations do not cover migration of polymer degradation products under food-contact conditions. For final article compliance, the processor should request the minimum test method set shown below.

    ParameterDesignationData Application
    Filler contentISO 3451-1:2019verifies nominal 15% loading
    Melt mass-flow rateISO 1133-1:2022lot-to-lot processing consistency
    Tensile propertiesASTM D638-14design stress and elongation at break
    Flexural propertiesISO 178:2019rigidity and flexural creep
    Heat deflection temperatureISO 75-2:2013short-term thermal service
    Chemical resistanceISO 175:2010 or ASTM D543-20washdown solution compatibility
    Surface roughnessISO 21920-2:2021cleanability and hygienic design
    Moisture contentISO 15512:2019pre-processing dry condition

    Cleaning agents containing strong bases above pH 12, solvent-laden disinfectants, or amine-based surface treatments should be avoided unless validation shows no surface attack. Repeated autoclave sterilization is not recommended unless the supplier verifies that the filler-polymer interface remains stable under saturated steam at 121°C; PLA softens below this temperature. Continuous hot water service above 60°C is outside the expected service window for cleanable PLA compounds without additional thermal stabilization.

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