CR‑5083 (also referred to as CR‑5083 PETG) is a copolyester resin developed by China Resources Chemical Co., Ltd. (CR) or its downstream suppliers. It belongs to the PETG (Polyethylene Terephthalate Glycol‑modified) family, which is a modified PET resin combining transparency, high impact strength, and ease of processing.

Property

Typical Value

Unit / Notes

Intrinsic Viscosity (IV)

~0.780 ± 0.02

dL/g

Density

~1.28 ± 0.10

g/cm³

Carboxyl (-COOH) End-Group Content

≤ 30

mmol/kg

Light Transmittance

≥ 90

%

Heat Distortion Temperature (HDT)

~73.5

°C

Color Value

L ≥ 58; b ≤ 0 + 0.8

–

This material is positioned as a high-impact, general-purpose transparent resin, suitable for injection molding, injection blow molding, extrusion blow molding, sheet extrusion, and other forming processes. CR‑5083 is widely used in cosmetic packaging, sheets/plates, consumer bottles, oral care products, and other applications requiring high transparency, good impact resistance, and excellent aesthetic appearance.

Key Features of CR‑5083 PETG

  • High Impact Strength: Compared with standard PET resin, CR‑5083 offers improved toughness, making it suitable for thin-walled containers and products prone to mechanical stress.
  • Excellent Transparency: High light transmittance and gloss, ideal for packaging or display applications where aesthetics are critical.
  • Wide Processing Window: Compatible with multiple processing methods including injection molding, extrusion, and blow molding. Ensures stable molding and repeatability.
  • Chemical Resistance: Resistant to various organic solvents and household chemicals, suitable for cosmetic or personal care packaging.
  • Safety and Environmental Compliance: Free of BPA and phthalates, making it safer for consumer applications.
  • Ease of Processing: Good melt stability and dimensional consistency during molding, reducing the risk of defects.

Typical Applications

PETG CR‑5083 is commonly used in applications that require high transparency, good impact resistance, and ease of processing, including:

  • Cosmetic Packaging: Bottles, jars, caps for lotions, creams, and other personal care products
  • Sheets/Plates: Transparent display sheets, decorative panels
  • Consumer Bottles: Water bottles or light-weight transparent containers (confirm food-contact compliance if applicable)
  • Oral Care Products: Toothbrush handles, toothbrush cases, toothpaste packaging shells

Recommendations for Use

  • Application Matching: Ideal for cosmetic packaging, display items, transparent consumer containers, and oral care product components.
  • Certification Verification: Ensure regulatory compliance for food-contact, beverage, or medical applications.
  • Processing Parameters: Follow supplier-recommended drying, melt temperature, mold temperature, injection speed, and cooling time.
  • Sample Testing: Evaluate transparency, gloss, impact resistance, thermal aging, chemical resistance, and dimensional stability.
  • Alternative Materials: For higher temperature or extreme dimensional stability requirements, consider engineering plastics such as PC, PPSU, PES, or highly crystalline PET.
  • Supplier Coordination: Confirm minimum order quantities, available colors/additives, inventory, lead time, and whether samples or application support are available.

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