Overview

This document provides technical specifications, features, and operational details for four models of modular L-bar sealing machines and shrink tunnels: GS55A, GS80A, GT40, and GT60. These machines are designed for packaging applications involving sealing and shrink-wrapping using films such as PVC, PPL, polyethylene, and polyolefins up to 40 microns thickness.

Machine Dimensions and Weights

• GS55A: Length 1760 mm, Width 795 mm, Height 1400 mm, Weight 170 kg
• GS80A: Length 2100 mm, Width 795 mm, Height 1480 mm, Weight 230 kg
• GT40: Length 1750 mm, Width 930 mm, Height 1455 mm, Weight 220 kg
• GT60: Length 2000 mm, Width 1110 mm, Height 1485 mm, Weight 330 kg

Tunnel Inlet and Sealing Bar Dimensions

• GS55A and GT40 Tunnel Inlet: 400 x 220 mm
• GS80A and GT60 Tunnel Inlet: 600 x 320 mm
• GS55A Sealing Bar: 550 x 420 mm
• GS80A Sealing Bar: 800 x 620 mm

Performance and Production

• Average production rate: 600 pieces per hour (applicable to GS55A and GS80A)

Technical Features

• Timed conveyor belt with adjustable height
• Adjustable sealing time
• Sealing bars cooling system via closed circuit
• Manual or automatic operation of the sealing arm
• Sealing arm equipped with patented anti-crash safety system
• Electronic piece counter
• Optional film waste rewinder
• Optional pedal for manual cycle start
• Usable films: PVC, PPL, polyethylene, polyolefins with max thickness 40 microns

Shrink Tunnel Features (GT40 and GT60)

• Complete thermal protection of the tunnel
• Height-adjustable conveyor belt
• Temperature adjustable via electronic thermoregulator
• Speed-adjustable conveyor belt
• Adjustable air flow at tunnel inlet

Electrical Specifications

• Power supply: 220/400 Volt, 50/60 Hz, 3-phase
• Power consumption:
  • GS55A: 3000 W
  • GS80A: 4000 W
  • GT40: 7000 W
  • GT60: 9000 W

Film Roll Dimensions

• Maximum film roll diameter for GS55A and GS80A: Ø300 x 600 mm and Ø300 x 900 mm respectively

Manufacturer Contact

Gramegna R
Via Raffaello Sanzio, 20/22
20090 Segrate (MI), Italy
Tel: (+39) (02) 26921641
Fax: (+39) (02) 26921657

Summary of Critical Information

• Machines support multiple film types with thickness up to 40 microns.
• Sealing arm safety system is patented and prevents crushing accidents.
• Shrink tunnels provide full thermal protection and adjustable parameters for temperature, conveyor speed, and airflow.
• Optional accessories enhance usability, including film waste rewinders and manual cycle start pedals.
• Power requirements vary significantly between models, with GT series requiring higher power.