Pre-sealing Devices

Pre-sealing devices assist in the ultimate achievement of uniform seal formations by pre-sealing web regions which consist of additional layers. For example, side- or bottom-gusseted webs have regions of 2 layers and 4 layers. A pre-sealer can be used to pre-heat the four layer regions so that the final seal becomes homogenous.

A plethora of pre-sealing devices are available, including:

• AC Servo & Pneumatic versions
• Single and dual heat models
• Side gusset pre-sealers
• Bottom-gusset pre-sealers
• Patch sealers
• Tab sealers

Examples of such devices include:

MTRS Series Servo Pre-Sealer

Features of this model include:

• Dual AC servo actuation, one for near-side and one for far-side sealing jaw pairs; each jaw pair can be individually enabled.
• Pneumatically adjustable sealing pressure and secondary jaw retraction
• Unparalleled performance
• Extremely quiet and smooth operation
• Sealing jaws can be rotated, thereby facilitating multiple uses, including:
• Side gusset pre-sealer
• Bottom gusset pre-sealer
• Single or dual longitudinal sealers
• Mitre sealer
• Individual Teflon curtains for each jaw
• Separate digital temperature control of each jaw
• Full adjustability
• Excellent accessibility to web and jaws
• Fault diagnostic system, including alarm system for temperature deviation and faults.
• Linear ball bushing mountings for width adjustment

SGP Series Side Gusset Presealer

Features of these devices include:

• Independent pneumatic actuation of each sealing jaw
• Four linear ball guides per sealing jaw, ensuring precise and rigid sealing action
• Four sealing jaws, providing both top and bottom sealing action for each side of the web
• Independent digital temperature controllers for each sealing jaw
• Operator alarm system, for fault monitoring.
• Teflon curtains fitted to each sealing jaw for operator’s convenience
• Swappable sealing jaw profiles are optionally available