Top Side Sealing Machine for Pouch Lithium Battery Packaging

Product Overview

This top and side sealing machine is designed for heat sealing the top edges and side edges of pouch lithium batteries. It transfers heat from electrically heated copper sealing heads to aluminum-plastic film, then applies controlled pressure to soften the packaging material to a near-molten state and create a pressed fusion seal. The equipment supports both top sealing and side sealing without changing the die, helping laboratory teams handle common pouch-cell sealing operations on one compact workstation.

The equipment is suited to pouch-cell manufacturing and development workflows where operators need to seal battery edges after cell assembly. It is applicable to different battery sizes, with straightforward adjustment and no need to adjust or replace the sealing heads for top-to-side process changes. A foot switch initiates the sealing cycle, allowing the operator to align the cell edge below the sealing head, complete the heat-pressure action, and remove the finished cell manually.

Built around copper heat heads, pneumatic actuation, linear-guide positioning, and adjustable process controls, this unit is configured for repeatable sealing work. The protective design helps prevent high-temperature burns, while the compact aluminum-profile frame, material support table, and accessible copper mold arrangement support orderly operation, cleaning, and mold replacement.

Key Features

• Top and Side Sealing Without Die Change: This system performs pouch-cell top-edge and side-edge sealing without changing the die. This reduces adjustment work when moving between these two sealing processes.

• Copper Sealing Heads: The sealing heads are made from copper for effective heat transfer. The copper construction is intended to reduce power consumption and improve working efficiency during heat sealing.

• Adjustable Heat-Sealing Temperature: Upper and lower sealing-head temperatures are adjusted through buttons on the temperature-controller panel. The selectable operating range extends from room temperature to 250°C, with a stated control accuracy of ±2°C.

• Pneumatic Pressure Adjustment: An air-pressure regulating valve adjusts the pressure applied by the upper and lower sealing heads. This enables process setting changes for different packaging-material and cell-edge requirements.

• Accurate Guided Head Movement: A cylinder drives the upper sealing head, while two linear guide sleeves provide guidance. This arrangement supports flexible vertical movement and accurate guidance to help meet parallelism requirements after edge sealing.

• Configurable Sealing Geometry: Standard seal width is 5mm±0.4, with 2-10mm widths available. Sealing knives can be replaced to produce other seal widths, allowing the equipment to be configured around the required package-edge format.

• Controlled Cycle Timing: Standard sealing time is 2S-3S, while the timer is adjustable from 0-99s. Operators can set the heat-pressure dwell according to the required process parameters.

• Uniform Sealing Result: The system is designed to produce flat, even seal marks and an orderly edge appearance. The specified thickness difference between any two sealing points is less than 15um.

• Compact Serviceable Construction: The frame uses aluminum profiles and the sheet-metal structure uses a three-dimensional geometric design. A material loading table is included, and the copper mold arrangement is designed for convenient cleaning and replacement.

• Manual and Automatic Operating Functions: The equipment includes both automatic and manual operating functions. The foot switch provides direct cycle activation after the operator positions and aligns the pouch-cell sealing edge.

Applications

Technical Specifications

The heat-sealing cycle begins after the temperature setting is reached. The operator holds the cell, places and aligns its sealing edge beneath the sealing head, then starts the process with the foot switch. The pneumatic cylinder drives the upper heated sealing head downward. Heat conduction softens the aluminum-plastic film toward a near-molten state, and applied pressure completes the pressed fusion sealing action. The operator then removes the cell manually.

The temperature-control interface is used to adjust the upper and lower head temperatures. The pressure-regulating valve sets sealing-head pressure, while the timing range permits the heat-sealing duration to be adjusted. Together, these controls address the stated process variables of temperature, pressure, and sealing time. The adjustable 1~5±0.4mm position from the main body to the heat-sealing edge provides an additional setting for edge placement.

For seal geometry, the standard 5mm±0.4 width supports routine pouch-cell edge packaging. When a different seal profile is required, widths from 2～10mm can be selected. Other widths can be produced by replacing the sealing knife. This configuration separates normal process adjustment from a change in physical seal-width requirement, keeping the copper-head arrangement available for the intended top and side sealing work.

Material thickness is a central consideration in setting up the sealing process. The stated side sealing-edge range is 60～300um, depending on aluminum-plastic film thickness. The stated top tab sealing-edge range is 200～700um, also depending on aluminum-plastic film thickness. These ranges should be considered alongside the configured temperature, pressure, seal width, and sealing time during pouch-cell packaging work.

The guided upper-head mechanism is intended to maintain accurate motion during the sealing stroke. Two linear guide sleeves guide the cylinder-driven head so that it moves flexibly and accurately. This construction is specifically intended to support the parallelism requirement of the sealed edge. The resulting seal is described as flat and uniform, with a stated thickness difference of less than 15um between any two sealing points.

The available configurations provide different sealing-knife lengths and compressed-air requirements. The 200mm configuration specifies 5～7kg/cm2 compressed air and 1KW power, while the 300mm configuration specifies 5～8kg/cm2 compressed air and 0.5KW power. Both configurations use AC220V/50Hz power, offer room-temperature-to-250℃ heat-sealing adjustment, and have a stated air-operated working speed of at least 400 cycles per hour.

Why Choose This Product

• Process-focused sealing control: Adjustable temperature, pneumatic pressure, sealing time, edge position, and seal width give production and laboratory teams defined settings for pouch-cell packaging work.

• Heat-transfer-oriented head design: Copper sealing heads provide the heat-transfer element of the process and are specified to support energy saving and working efficiency.

• Guided mechanical accuracy: The cylinder-driven upper head and dual linear guide sleeves are designed to support accurate movement and sealed-edge parallelism.

• Practical format flexibility: Top and side sealing can be completed without changing the die, while different battery specifications can be accommodated through simple adjustment.

• Operator-ready construction: High-temperature burn protection, a loading table, manual and automatic operating functions, and convenient copper-mold cleaning and replacement support regular use and upkeep.

Contact us for a quote or a custom solution matched to your pouch-cell sealing dimensions, packaging material, and process requirements.

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