Bag Making Operations TRIZ Cases

A thermal welder fuses thermoplastic sheet material using a heater and compression mechanism to form an integral back seam.

A bag manufacturing process uses distinct truncated triangle and flat-bottomed U stitching patterns to join cellulosic webs into square bottom structures.

A continuous sheet structure forms filler confining portions and accommodating regions through overlaying, folding, and joining steps.

Segmented coating patterns on woven plastic bags enable localized heat sealing, reducing material usage while maintaining strong seam integrity.

Heated guiding elements enable rapid thermal adhesion for pinched sacks, resolving stability defects and reducing material thickness requirements.

Automated scanning of uniquely coded waste bags links specific disposal behaviors to generators, resolving contamination monitoring challenges.

Repositioning the bottom gusset transversely decouples package height from web width constraints, allowing variable configurations.

Intermeshing ring rollers stretch thermoplastic film into ribbed patterns to increase loft, resolving perceived weakness from material reduction.

Projecting seam structures in flexible film containers reduce material usage while maintaining structural integrity for fluent product dispensing.

Ultrasonic sealing replaces hot bars to resolve trade-offs between reliability and speed.

An algorithmic wavetop structure reinforces the central film region to improve handle strength without increasing manufacturing complexity.

Segmenting cutting and sealing stations allows independent dwell time control, resolving the trade-off between seal strength and production rate.

Segmented tear strips resolve sealing reliability versus opening ease by preventing contamination.

A separable bag roll uses sealed zones and perforation lines to form handles without generating scrap material.

Segmented blanks attach to curved contours using pressure rollers and compressed air, resolving positioning conflicts for expanded health warnings.

A multi-layer packaging material combines a nonwoven fabric with a fibrous material web to create a sack-shaped container.

Adjustable hot gas mass flow prevents central overheating while ensuring uniform adhesion on tube cross-bottoms.

Dual hot air nozzles preheat the spout interface to near melting point, enabling reliable sealing of similar-melting plastics without material degradation.

A flexible film package uses a pressure-sensitive closure layer over a score line to enable easy opening.