Bag Making Operations TRIZ Cases

Localized sealant strips reduce material usage and manufacturing costs while maintaining sealing reliability for flowable product packaging.

A milk storage bag uses a removable preperforated section to create a hanging opening for vertical freezer suspension.

Sled-mounted sealers travel with the web to eliminate shuttle reversal time, reducing machine footprint while maintaining high production speed.

Negative temperature coefficient resistivity enables self-regulating heat distribution, eliminating multiple welding heads and reducing energy consumption.

Back-folding film web portions creates inverted hems that eliminate air entrapment during tight winding.

Integrating a permeable humidity control layer into packaging eliminates loose pouch disposal while maintaining optimal headspace moisture.

An asymmetric second aperture reduces force on a weakened separating sheet during filling, preventing premature breakage.

Placing the carrier handle at the lower end and the closure at the upper end prevents tensile loads from stressing the seal during transport.

Alternating structural-elastic and ring-rolled bands reduce film gauge while maintaining tensile strength via segmented deformation.

Segmenting the flexible sheet into fixed and removable portions resolves the contradiction between tamper evidence and ease of opening.

A flexible pouch laminate structure uses specific PET, aluminum, nylon, and polyethylene layers to create a robust packaging material.

Concave intermediate seal lines reduce package height while maintaining content volume in flexible side-gusseted structures.

A rodless seal plate assembly uses a thin-film heater and vacuum openings to secure plastic bags.

Reduced-diameter ventilation openings at folded edges prevent bursting from trapped air while preserving moisture barrier properties.

Strong-pressure seal zone merges break lines at corner to reduce separation force and prevent deviation.

Lateral feed lines transfer pre-assembled semi-finished products to a main line, resolving the trade-off between welding precision and system complexity.

Segmented multi-layer adhesive prevents delamination and leakage while maintaining sterility in medical packaging.

A transfer device adjusts feed distance and speed to set predefined spacing between bag bodies during transport.

A coupling device guides reinforcement sheets onto tape material to form a tubular bag body, preventing tension or breakage during movement.

Protruding partitions in a conveying tray orient flexible pouches transversely, eliminating manual sorting and enabling automated loading.

Segmenting continuous sheets into joined intermediate blanks reduces material waste while maintaining manufacturing precision.

Applying elongate closing elements perpendicular to a foil web after forming corner seals.

Intermediary vacuum isolates welding pressure from the bag blank, preventing side wall bulging and ensuring reliable seam quality.

Transverse bottom gusset positioning decouples package height from web width constraints.

A Thomson blade cuts plastic film using a rolling member that reduces cutting force below 60 kgf and minimizes drive capacity requirements.