When it comes to life - essential medical devices like respiratory tubes, material selection is not just about functionality—it’s about safeguarding health. Enter tpe raw material, a game - changing solution when overmolded with PC (polycarbonate) to create cutting - edge respiratory tubes. Let’s dive into the technical marvels and unparalleled advantages that make this combination indispensable.

1. The Science Behind TPE Overmolding on PC
TPE’s unique molecular structure allows for seamless adhesion to PC during the overmolding process. Unlike traditional bonding methods that rely on adhesives or mechanical fasteners, TPE chemically bonds with PC, creating a monolithic structure. This process, often executed via injection molding, ensures zero gaps or weak points—a critical factor in respiratory tubes where airtight integrity is non - negotiable. Testing per ASTM D897 (adhesion strength standard) reveals that TPE - PC overmolded joints can withstand up to 15 N/mm² of shear force, far exceeding the requirements for medical tubing applications.

2. Unmatched Biocompatibility and Safety
Respiratory tubes come into direct contact with patients’ airways, making material safety paramount. TPE raw material shines here, meeting stringent biocompatibility standards such as ISO 10993—a comprehensive set of tests evaluating cytotoxicity, skin irritation, and systemic toxicity. Unlike PVC, which may contain phthalates (plasticizers known to leach harmful substances), TPE is inherently plasticizer - free. In a comparative study, PVC - based tubes showed 0.3% phthalate leaching after 24 - hour immersion in physiological saline, while TPE tubes registered zero detectable leachables. This makes TPE - overmolded PC tubes a safer choice for long - term ventilation and oxygen therapy.

3. Flexibility Meets Rigidity: The Perfect Balance
PC provides the rigid structural support needed to maintain tube shape under pressure, but alone, it lacks flexibility. This is where TPE steps in. With a customizable Shore A hardness range of 40 - 80, TPE can be tailored to offer precise flexibility. For example, a Shore A 60 TPE layer overmolded on PC allows the tube to bend smoothly without kinking—crucial for navigating complex anatomical pathways during intubation. In contrast, silicone - coated PC tubes, a common alternative, often exhibit sticky surfaces that can trap secretions, increasing the risk of blockages. TPE’s smooth surface reduces friction by 25% (tested per ASTM D1894), ensuring unobstructed airflow.

4. Chemical Resistance and Longevity
Respiratory tubes must withstand repeated disinfection cycles. TPE demonstrates remarkable resistance to common medical disinfectants like ethanol, hydrogen peroxide, and bleach. After 50 cycles of exposure to 70% ethanol (simulating daily disinfection), TPE - overmolded PC tubes retained 98% of their original tensile strength (per ISO 188 aging test). In comparison, rubber - coated PC tubes showed 15% strength degradation under the same conditions. This durability not only extends the tube’s lifespan but also reduces the risk of material breakdown during use—a vital factor in preventing patient - harming complications.

5. Cost - Efficiency and Sustainability
TPE’s processability during overmolding reduces manufacturing complexity and costs. Its compatibility with existing PC - injection molding equipment means minimal production line modifications. Moreover, TPE is recyclable, unlike many multi - layer composite materials used in traditional tubes. By choosing TPE - overmolded PC respiratory tubes, healthcare providers can cut waste; recycling facilities can separate TPE from PC for repurposing, aligning with global sustainability goals.

In summary, the synergy between tpe raw material and PC in respiratory tube design isn’t just an upgrade—it’s a medical necessity. From safety and performance to cost - effectiveness, TPE overmolding sets a new standard, outshining alternatives at every turn.