Glopak Inc.

Yves Quintin

Roland Basque

Andre Pitre

Simon Setton

Marion Michael Meetze

Andr&eacute; Pitre

The multi-layer film structure having an inner sealing layer which comprises metallocene catalyzed resin, a core which includes polypropylene copolymer and an outer layer and wherein the multi-layer film structure has a thickness within a range between about 50 and 70 microns. By utilizing this thin film with specific properties the sealers may be operated at lower temperatures thereby resulting in an energy saving and they produce seals having improved seal strength of 30% to 50% as compared with known prior mono-layer polyethylene film. The seal initiation temperature is reduced by 10&deg; C. to 15&deg; C. and the film exhibits an improved machine direction tensile strength of 25% to 40% and an improvement of 30% to 50% in puncture resistance as compared with a 76 microns mono-layer polyethylene film. This results in a reduction in the sealing cycle time and an increase in the throughput of the machine. This results in a liquid pouch having a substantial improvement in drop test performance, puncture resistance and seal strength. The machine accomplishes better seals with less energy, requires less downtime for roll changes and maintenance and increase throughput.

Multi-layer film structure for use with a high-speed pouch forming, filling and sealing machine

The multi-layer film structure having an inner sealing layer ( ) which comprises metallocene resin, a core ( ) which includes polypropylene copolymer and an outer layer ( ) and wherein the multi-layer film structure has a thickness (X) within a range between about 50 and 70 microns (2.0-2.75 mil). By utilizing this thin film with specific properties the sealers may be operated at lower temperatures thereby resulting in an energy saving and they produce seals having improved seal strength of 30% to 50% as compared with known prior mono-layer polyethylene film. The seal initiation temperature is reduced by 10&deg; C. to 15&deg; C. and the film exhibits an improved machine direction tensile strength of 25% to 40% and an improvement of 30% to 50% in puncture resistance as compared with a 76 microns (3 mil) mono-layer polyethylene film. This results in a reduction in the sealing cycle time and an increase in the throughput of the machine. This results in a liquid pouch having a substantial improvement in drop test performance, puncture resistance and seal strength. The machine accomplishes better seals with less energy, requires less downtime for roll changes and maintenance and increase throughput.

Use of a multilayer film in a high-speed pouch forming, sealing and filling machine, and method of operation

A machine and a method for wrapping an elongated object, such as a drinking straw, with a plastic film are disclosed. The machine has a drive for continuously advancing a thin narrow film strip from a supply roll to a wrapper loading and forming station. The wrapper loading and forming station has a trough former for folding the advancing film strip into a film trough. An inserting device positions spaced-apart elongated objects, such as the drinking straws, into the film trough of the advancing film strip for engagement by the film trough. The objects are supplied by a dispenser and disposed in a pre-oriented manner to be grasped by the inserting device. The film trough is advanced through sealing and severing stations wherein individually wrapped elongated objects or straws are produced.

Straw wrapping machine and method

The multi-layer film structure having an inner sealing layer which comprises metallocene resin, a core which includes polypropylene copolymer and an outer layer and wherein the multi-layer film structure has a thickness within a range between about 50 and 70 microns (2.0-2.75 mil). By utilizing this thin film with specific properties the sealers may be operated at lower temperatures thereby resulting in an energy saving and they produce seals having improved seal strength of 30% to 50% as compared with known prior mono-layer polyethylene film. The seal initiation temperature is reduced by 10&deg; C. to 15&deg; C. and the film exhibits an improved machine direction tensile strength of 25% to 40% and an improvement of 30% to 50% in puncture resistance as compared with a 76 microns (3 mil) mono-layer polyethylene film. This results in a reduction in the sealing cycle time and an increase in the throughput of the machine. This results in a liquid pouch having a substantial improvement in drop test performance, puncture resistance and seal strength. The machine accomplishes better seals with less energy, requires less downtime for roll changes and maintenance and increase throughput.

Growing community of inventors

Saint Bruno, Canada

Yves Quintin