Product Description

Product Introduction

The Dual 5-Point Heat Seal Gradient Tester adopts thermal compression sealing testing principle. It is used to measure heat seal pressure, temperature, dwell time and other key parameters of flexible packaging laminated films, plastic film substrates, coated paper and other heat-sealable composite films. It is an essential testing instrument for laboratories, research institutes and on-site production lines.

2. Application Fields

Basic Application – Film Materials

Suitable for heat seal tests of various plastic films, plastic composite films, paper-plastic composite films, co-extruded films, aluminized films, aluminum foils and aluminum foil composite films. The sealing surface is smooth flat plane, and the sealing width can be customized according to customer requirements.

3. Test Principle

Heat seal materials with different melting points, thermal stability, fluidity and thickness deliver distinct heat sealing performance, with greatly varied optimal sealing process parameters.

This tester applies thermal compression sealing method: place test specimens between upper and lower heating jaws, complete sealing under preset temperature, pressure and dwell time. By carrying out sealing tests under various temperature, pressure and time combinations, accurate heat sealing performance indicators can be obtained with supporting inspection equipment.

4. Product Features

• Five independent upper sealing jaws and one shared lower jaw, each equipped with separate PID temperature control modules for independent temperature regulation
• 40 mm wide jaw design enables one single jaw to prepare two 15 mm wide specimens
• Built-in six groups of PID temperature control units with neat appearance; lower computer communicates with PID modules, all temperature control and settings operated via touch screen
• Two test trigger modes: manual operation and foot pedal; user-friendly human-machine interface with anti-scald safety design
• International brand pneumatic components, professional PID temperature controllers and imported high-speed high-precision sampling chips ensure accurate test conditions
• 7-inch high-definition color touch screen for convenient test operation; real-time display of set temperature, actual temperature, pressure and dwell time on interface
• Menu-based operation interface with independent menus for all test functions, easy parameter setting and testing operation
• Dual PID temperature control for upper & lower jaws with high temperature control precision
• Digital pressure sensor display with high accuracy of pressure adjustment & control
• Magnetic travel switch timing eliminates idle travel time to realize precise time parameter control
• Power-on password login to prevent unauthorized operation; four-level user permission management
• Standard built-in mini thermal printer with data query, statistics and printing functions
• Intelligent protections including motion mechanism limit protection, overload protection, automatic return and power-off memory to guarantee safety of users and equipment
• Optional professional GMP computer communication software supporting data traceability, multi-level permission management, audit trail and electronic signature functions

5. Technical Specifications

Item	Parameter
Quantity of Heat Sealing Jaws	5 upper independent jaws + 1 shared lower jaw
Heat Seal Temperature	Ambient Temperature ~ 250 ℃
Heat Seal Pressure	0.1 MPa ~ 0.7 MPa (shared pressure system, subject to sealing area)
Heat Seal Dwell Time	0.1 s ~ 9999.9 s
Temperature Control Accuracy	±0.2 ℃
Adjustable Ascending Temperature Gradient	≤20 ℃
Heat Seal Area	40 mm × 10 mm per point × 5 points 40 mm width jaw can produce two specimens in one test
Heating Mode	Dual-sided heating with independent temperature control
Air Supply Pressure	0.7 MPa ~ 0.8 MPa (air compressor to be supplied by user)
Air Connector	Φ6 mm polyurethane tube (compressed air source to be prepared by user)
Power Supply	Standard: AC 220 V, 50 Hz
Overall Dimensions	580 mm (L) × 400 mm (W) × 510 mm (H)
Net Weight	Approx. 40 kg (excluding packaging case)

6. Reference Standards

QB/T 2358, ASTM F2029, YBB 0012-2003

7. Standard & Optional Configurations

• Standard Accessories: Main unit, foot pedal switch, mini thermal printer
• Optional Accessories: Professional test software, communication cable, extended polyurethane air tube