Lithium Heparin Membrane Drying Tunnel Oven

Lithium Heparin Membrane Drying Tunnel Oven is a continuous, high-precision thermal processing equipment specially designed for the medical, in vitro diagnostics (IVD), and special materials industries. It is mainly used for high-efficiency drying and curing of membranes, test strips, substrates, or blood collection tube-related components coated with lithium heparin (a commonly used anticoagulant). The following is a detailed analysis of this equipment:

Application Fields

Medical and In Vitro Diagnostics (IVD)

Used for the rapid drying of anticoagulant membranes, anticoagulant blocks, or coatings in vacuum blood collection tubes (lithium heparin anticoagulant tubes).

Biochips and Biochemical Test Strips

Used for drying bioactive coatings on POCT (Point-of-Care Testing) test strips.

High-Precision Coating Materials

Applicable to other thin-film materials requiring precise temperature control, dust-free conditions, and non-damaging surface coating treatment.

Applicable Industry Standards

GMP / FDA Regulations

Complies with pharmaceutical and medical device production quality management requirements for medical-grade equipment.

YY/T 0314 / ISO 6710

Applicable standards related to in vitro blood collection tubes, ensuring that lithium heparin activity remains unaffected after the drying process.

GB/T 30435 / GB 4793.1

Relevant safety standards for industrial thermal testing equipment, measurement and control equipment, and electrical equipment for laboratory use.

Cleanliness Standards

The equipment usually needs to meet ISO Class 5 (Class 100) or ISO Class 6 (Class 1000) air cleanliness requirements.

Equipment Features

Precise Temperature Control and High Uniformity

The system adopts multi-zone independent microcomputer temperature control, with extremely small temperature differences (usually within ±1°C), preventing lithium heparin deactivation caused by local overheating.

Clean and Dust-Free Design

The internal structure is made of stainless steel and equipped with high-efficiency filters (HEPA) to prevent secondary contamination of the membranes.

High-Efficiency Continuous Operation

The tunnel conveyor structure enables integrated continuous production, including feeding, drying, cooling, and unloading processes.

Gentle Drying Technology

The equipment mainly adopts infrared heating, hot air circulation, or a combination of low-vacuum drying technology to achieve rapid non-contact evaporation of moisture or solvents.

FAQ

Q1: Why must lithium heparin membranes be dried using a high-precision tunnel oven?

A: Lithium heparin is a biologically active substance that is highly sensitive to temperature. Excessive drying temperature or uneven heating may cause degradation or complete loss of its anticoagulant activity, affecting the accuracy of the final blood test results.

Q2: What is the typical drying temperature range of this type of tunnel oven?

A: The drying temperature depends on the coating thickness and solvent characteristics. Generally, the gentle drying temperature range is between 40°C and 80°C. By extending the tunnel length and increasing airflow speed, moisture can be removed efficiently while protecting the biological activity of lithium heparin.

Q3: How does the equipment ensure the cleanliness of the membrane surface?

A: The oven is equipped with high-grade HEPA high-efficiency air filters for internal laminar airflow circulation. Combined with negative-pressure exhaust, it prevents external dust from entering and avoids contamination of the membranes by particles or debris inside the oven.

Q4: Will the mesh belt or conveyor belt damage or cause sticking of the membranes?

A: No. The conveyor system is usually customized according to the membrane material and may use PTFE (Teflon) mesh belts, stainless steel mesh belts, or suspended fixtures. These materials provide excellent anti-stick performance, temperature resistance, and corrosion resistance.

Q5: Can the drying time and conveyor speed be adjusted?

A: Yes. The system adopts a variable-frequency drive motor or servo drive system combined with a PLC control panel. The conveyor speed can be digitally adjusted at any time to perfectly match different production cycles and process requirements.