Hermetic Sealing Head for CAP Stations | Component Specifications

Product Specifications

Technical details and manufacturing context for Hermetic Sealing Head

Definition

The Hermetic Sealing Head is a critical component within a Controlled Atmosphere Packaging (CAP) Station. It is the mechanism responsible for applying heat and pressure to the packaging film or lid to create a permanent, airtight seal around the product. This seal is essential for maintaining the modified atmosphere (e.g., specific gas mixture) inside the package, which is crucial for extending the shelf life and preserving the quality of perishable goods like food, pharmaceuticals, and electronics. The sealing head typically contains heating elements (e.g., nichrome wire, ceramic heaters) and a pressure-applying surface (often a Teflon-coated or silicone pad). During the packaging cycle, it descends onto the packaging material resting on the product tray or container. It applies controlled heat to melt the sealing layer of the film/lid and simultaneous pressure to fuse it to the rim of the container, forming a hermetic bond as it cools. The component is designed for integration into CAP stations, with parameters such as operating pressure (1.0–1.6 MPa), sealing diameter (50–200 mm), cycle rate (10–30 cycles/min), sealing temperature (120–180°C), temperature control accuracy (±2°C), sealing force (500–2000 N), dwell time (0.5–2.0 s), supply voltage (24 V DC ±10%), power consumption (50–150 W), operating temperature (5–50°C), ingress protection (IP54–IP65 per IEC 60529), material (SUS304 per ASTM A276), and weight (5–15 kg). These values are reference ranges and must be verified for the specific model and application. The sealing head is typically made of stainless steel for the body, high-temperature alloy for the heating element, and PTFE/Teflon or silicone for the pressure pad. It is a component, not a standalone machine, and is selected based on packaging requirements. Always confirm model-specific values and standards with the legal manufacturer or supplier.

Working Principle

The sealing head contains heating elements and a pressure-applying surface. During the packaging cycle, it descends onto the packaging material. It applies controlled heat to melt the sealing layer and simultaneous pressure to fuse it to the container rim, forming a hermetic bond as it cools. The heating elements are typically nichrome wire or ceramic heaters, and the pressure pad is often Teflon-coated or silicone. The process is controlled by parameters such as temperature, pressure, and dwell time to ensure a consistent seal.

Common Materials

Stainless Steel (body), High-Temperature Alloy (heating element), PTFE/Teflon or Silicone (pressure pad)

Technical Parameters

Parameter	Typical range	Notes & selection driver
Operating Pressure	1.0–1.6 MPa
Sealing Diameter	50–200 mm	Determines package size compatibility
Cycle Rate	10–30 cycles/min	Higher rates require faster actuation
Sealing Temperature	120–180 °C	Too low causes weak seals; too high damages film
Temperature Control Accuracy	±2 °C	Ensures consistent seal quality
Sealing Force	500–2000 N	Adjustable to material thickness
Dwell Time	0.5–2.0 s	Critical for seal strength
Supply Voltage	24 ±10% V DC	For integrated sensors and actuators
Power Consumption	50–150 W	Includes heating and control electronics
Operating Temperature	5–50 °C	Outside this range performance degrades
Ingress Protection	IP54–IP65	Protects against dust and water jetsIEC 60529
Material	SUS304	Corrosion-resistant stainless steelASTM A276
Weight	5–15 kg	Affects mounting and handling

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Heating Element
Generates the precise heat required to melt the sealing layer of the packaging material.

Material: Nichrome wire / Ceramic heater
Pressure Pad / Seal Bar Part
Applies even pressure across the sealing area to ensure a consistent, airtight bond.

Material: PTFE (Teflon) / High-temperature Silicone
Thermocouple / Temperature Sensor
Monitors and provides feedback for precise temperature control of the heating element.

Material: Stainless Steel sheath, Thermocouple wire
Insulation Layer Part
Minimizes heat loss to the surrounding machine components and improves energy efficiency.

Material: Ceramic fiber / Mica

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Controlled Atmosphere Packaging (CAP) Station

View system integration details

Manufacturers of Hermetic Sealing Head

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Frequently Asked Questions

What is the operating pressure range for this sealing head?

The reference range is 1.0–1.6 MPa. Verify the exact value for your model.

What materials are used in the sealing head?

The body is typically stainless steel (SUS304 per ASTM A276), the heating element is a high-temperature alloy, and the pressure pad is PTFE/Teflon or silicone.

What is the sealing temperature range?

The reference range is 120–180°C. Too low causes weak seals; too high damages film. Temperature control accuracy is ±2°C.

What ingress protection does it have?

The reference range is IP54–IP65 per IEC 60529, protecting against dust and water jets. Confirm the specific rating for your unit.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	0 to 2 bar (sealing pressure), vacuum to 1.5 bar (chamber pressure)
other spec:	Sealing cycle time: 2-10 seconds, Material thickness: 0.05-0.5 mm, Seal width: 3-10 mm
temperature:	20°C to 150°C (operating), -10°C to 200°C (storage)

Hermetic Sealing Head

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards