A heat sealer module for a heat-sealing station of a packaging apparatus has a sealing belt for contacting a terminal portion of semi-sealed packages and for guiding the terminal portion of the semi-sealed packages along a main movement direction; the heat sealer module also has a first driving belt and a second driving belt to assist in accompanying the packages in proper position for sealing. A heat sealer having opposed heat sealer modules. A packaging apparatus for heat sealing packages having a vacuum chamber with an elongated opening and a conveyor for receiving semi-sealed packages and for moving the semi-sealed packages relative to the vacuum chamber is disclosed. The packaging apparatus includes evacuation means for evacuating gas present in the semi-sealed packages and forming evacuated semi-sealed packages. The packaging apparatus includes the heat sealer for heat sealing the terminal portion of each evacuated semi-sealed package thereby forming heat sealed packages.

A heat sealer module for a heat-sealing station of a packaging apparatus has a sealing belt for contacting a terminal portion of semi-sealed packages and for guiding the terminal portion of the semi-sealed packages along a main movement direction; the heat sealer module also has a first driving belt and a second driving belt to assist in accompanying the packages in proper position for sealing. A heat sealer having opposed heat sealer modules. A packaging apparatus for heat sealing packages having a vacuum chamber with an elongated opening and a conveyor for receiving semi-sealed packages and for moving the semi-sealed packages relative to the vacuum chamber is disclosed. The packaging apparatus includes evacuation means for evacuating gas present in the semi-sealed packages and forming evacuated semi-sealed packages. The packaging apparatus includes the heat sealer for heat sealing the terminal portion of each evacuated semi-sealed package thereby forming heat sealed packages.

A heating block assembly including one or more configurable insulator segments and a heater block having a first surface configured to removably receive the one or more configurable insulator segments, in which each of the one or more configurable insulator segments covers only a portion of the first surface. A method for sealing at least one portion of a package using such a heating block assembly is also disclosed.

A method and apparatus for sealing a bag made of a polymeric material by applying heat activated layers on different portions of the bag, wherein the first adhesive layer and the second adhesive layer have respective heat activation temperatures below the softening point temperature of the polymeric material; after creasing the bag along a fold line, applying heat at a temperature below the softening point temperature of the polymeric material to activate the first adhesive layer and the second adhesive layer to adhesive states after the bag has been filled with contents; and folding the bag to form an adhesive-to adhesive seal by contact between the heat activated first adhesive layer and the heat activated second adhesive layer.

The disclosure relates to a power-transfer unit for a sealing unit of a packaging machine comprising a support, intended to be attached to a sealing unit, a power bar comprising a contact-initiation section, a contact-termination section, and an intermediate section therebetween, the power bar being resiliently suspended in the support and being movable along a first direction being normal to a contact surface of the intermediate section. The power bar is suspended in the support by a first leaf spring.

The disclosure relates to a power-transfer unit for a sealing unit of a packaging machine comprising a support, intended to be attached to a sealing unit, a power bar comprising a contact-initiation section, a contact-termination section, and an intermediate section therebetween, the power bar being resiliently suspended in the support and being movable along a first direction being normal to a contact surface of the intermediate section. The power bar is suspended in the support by a first leaf spring.

A composite belt assembly for a band sealer is provided. The composite belt assembly comprises a belt comprising a main belt; a first layer; and a second layer; wherein the first layer is arranged in contact with the main belt, preferably between the second layer and the main belt; and the first layer includes an attachment portion, configured to contact the main belt and the second layer. There is also provided a band sealer comprising a composite belt assembly and a packaging line comprising the band sealer. There is further provided a method for heat sealing a package, comprising providing a composite belt assembly, gripping a bag neck of the package using the composite belt assembly, guiding the bag neck of the package along a movement plane using the composite belt assembly providing a sealing element configured for heat sealing a plastic material of the bag neck, and applying heat to at least part of the bag neck through the first layer of the composite belt assembly using the sealing element.

A composite belt assembly for a band sealer is provided. The composite belt assembly comprises a belt comprising a main belt; a first layer; and a second layer; wherein the first layer is arranged in contact with the main belt, preferably between the second layer and the main belt; and the first layer includes an attachment portion, configured to contact the main belt and the second layer. There is also provided a band sealer comprising a composite belt assembly and a packaging line comprising the band sealer. There is further provided a method for heat sealing a package, comprising providing a composite belt assembly, gripping a bag neck of the package using the composite belt assembly, guiding the bag neck of the package along a movement plane using the composite belt assembly providing a sealing element configured for heat sealing a plastic material of the bag neck, and applying heat to at least part of the bag neck through the first layer of the composite belt assembly using the sealing element.

A heat-sealing apparatus for forming a composite heat seal structure, includes a belt conveying, heating and press bonding portion configured to convey and heat a heat seal material to form a band-shaped peelable seal, and a die roll press bonding portion configured to add a linear peelable seal to the band-shaped peelable seal in a longitudinal direction of the band-shaped peelable seal for forming the composite heat seal structure.

A heat-sealing apparatus for forming a composite heat seal structure, includes a belt conveying, heating and press bonding portion configured to convey and heat a heat seal material to form a band-shaped peelable seal, and a die roll press bonding portion configured to add a linear peelable seal to the band-shaped peelable seal in a longitudinal direction of the band-shaped peelable seal for forming the composite heat seal structure.