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Stop sacrificing your thermoforming yield to stress-whitening, crystal points, or printing adhesion failures. At HSQY, we manufacture high-performance APET and PET/PE laminated sheets that serve as the gold standard for rigid packaging. Engineered for high-speed vacuum forming and blister packaging, our sheets deliver glass-like optical clarity, precise gauge distribution, and exceptional structural rigidity, ensuring your packaging line runs smoothly with minimal scrap.
Backed by advanced melt-filtration systems and precision extrusion lines within our vertically integrated facilities, we guarantee strict thickness tolerances and zero impurities. From standard 250-micron fruit clamshells to heavy-duty 300-micron retail blisters and MAP-ready PET/PE composites, HSQY provides the exact polymer architecture your production and printing processes demand.
Zero-Defect Optical Clarity: Our advanced melt-filtration technology and highly polished calendar rollers eliminate crystal points and flow marks, ensuring flawless transparency for premium retail displays and high-fidelity UV printing.
Precision Gauge Control: Equipped with online thickness gauging, we maintain ultra-strict tolerances. This prevents uneven wall distribution and web-tracking issues on high-speed automatic thermoforming machines.
Deep-Draw Anti-Whitening: We customize the intrinsic viscosity (IV) to prevent stress-crystallization (whitening) in deep-cavity molds and sharp corners, ensuring structural integrity without cracking.
Surface Energy Optimization: Our sheets undergo precise inline corona treatment to achieve optimal dyne levels (typically 38-42 dynes/cm), guaranteeing vibrant, scratch-resistant adhesion for offset, screen, and flexographic printing.
Different end-uses require entirely different polymer structures and surface treatments. Explore our specialized PET matrix:
High-Gloss APET (Amorphous PET): The industry standard for crystal-clear food packaging, bakery trays, and fruit clamshells. Offers superior rigidity, high gloss, and excellent vacuum formability.
PET/PE Laminated Composites: Combines the structural rigidity of PET with the low-temperature heat-sealability of PE. Essential for Modified Atmosphere Packaging (MAP) of fresh meats and seafood, ensuring hermetic seals with lidding films.
Heavy-Duty 300+ Micron PET: Extra-stiff formulations designed for large-format clamshells, hardware blisters, and industrial trays. Prevents the "spongy" feel and protects heavy contents from crushing during transit.
Printable & Tinted PET: Available in UV-blocking Amber or Blue tints for light-sensitive products, with optimized surface tension for direct-to-sheet commercial printing.
*Available in custom widths (up to 1220mm), precise thicknesses (0.13mm to 2.0mm / 130 to 2000 microns). Density: 1.35 g/cm³. Supplied in roll or cut-sheet formats.
Selecting the wrong PET grade or thickness is the primary cause of packaging line waste. Our engineers will help you define:
Draw Ratio & Mold Geometry: Matching the material's elongation at break to your mold's depth-to-width ratio to prevent corner thinning or tearing.
Thermal Profiles: Calibrating the sheet's glass transition temperature (Tg) to your oven's heating zones (typically 100°C-120°C), preventing sagging or premature crystallization.
Sealant Compatibility: Ensuring the PET/PE layer perfectly matches your lidding film's sealant chemistry for leak-proof MAP trays.
Q1: What is the exact difference between standard APET and PET/PE laminated sheets?
A: Standard APET offers excellent clarity and rigidity but requires high temperatures and specific coatings to heat-seal directly. PET/PE laminated sheets solve this by bonding a rigid APET base with a low-temperature PE sealant layer. This is critical for fresh meat and seafood MAP trays, as the PE layer ensures a strong, leak-proof, and tamper-evident heat seal with standard PE-based lidding films, while the PET provides the necessary structural stiffness.
Q2: Is 300-micron (0.3mm) PET too thick for standard thermoforming machines?
A: Not at all. 300 microns is a standard heavy-duty gauge for industrial thermoforming lines producing large clamshells or hardware blisters. However, thicker gauges require precise heating zone calibration to prevent the core from remaining cold while the surface overheats. HSQY’s 300-micron sheets are engineered with uniform thermal conductivity, allowing them to form sharp corners without stress-whitening or "spongy" wall collapse on high-speed equipment.
Q3: Why does ink sometimes scratch off PET sheets after UV or offset printing?
A: Ink adhesion failure is caused by low surface energy. Untreated PET is chemically inert, causing inks to bead up or peel off. HSQY utilizes precision inline corona treatment to elevate the surface tension to strict Dyne levels (typically 38-42 dynes/cm). This micro-roughens the surface and increases chemical polarity, guaranteeing excellent ink wetting and permanent adhesion for high-speed UV, offset, and screen printing processes.
Q4: How do you prevent "whitening" at the corners during deep-draw vacuum forming?
A: Whitening (stress-crystallization) occurs when the PET polymer chains are stretched too rapidly or at incorrect temperatures. We prevent this by strictly controlling the resin's intrinsic viscosity (IV) and incorporating specialized impact modifiers. Furthermore, our technical team can review your oven's heating profile to ensure the sheet reaches the optimal 100°C-120°C forming window uniformly, allowing for deep draws without structural failure or optical haze.
Contact us today
Tel: +86-15806115291
WhatsApp: +86-15806115291
Email: sale6@hgqyplastic.com
11th floor, Huasheng Building, Zhonglou District, Changzhou City, Jiangsu Province, China, 213001
