"""
Knowledge about folding and gluing operations in packaging production.
"""

title = "Folding and Gluing Operations"

content = """
Folding and gluing convert die-cut blanks into finished, assembled packaging
ready for product filling. These operations determine structural integrity
and functional performance of the final package.

**Folder-Gluer Machine Configuration:** Modern folder-gluers process blanks
through sequential stations. Feeding sections use belts, suction, or friction
to singulate blanks. Pre-breaking sections fold panels to establish memory.
Glue application applies adhesive to specific tabs. Folding sections create
box geometry. Compression sections set bonds. Delivery accumulates finished
product. Each station requires precise registration and timing.

**Adhesive Selection:** Hot melt adhesives (EVA, metallocene) provide instant
bonding for high-speed production. They require heated applicators and quick
compression times. Cold glues (dextrin, PVA) offer repositioning time and
lower equipment costs but need longer setting. Specialty adhesives include
remoistenable for envelope-style closures, pressure-sensitive for resealable
features, and FDA-compliant for food contact applications.

**Lock-Bottom vs. Tuck-End:** Lock-bottom cartons (auto-bottom, 1-2-3 bottom)
pop into shape when squared, ideal for automatic filling lines. Tuck-end
cartons require manual assembly but stack flat efficiently. Straight-tuck
and reverse-tuck configurations offer different opening characteristics and
retail presentation. Gluer setup differs significantly between styles.

**Inline Value-Added Operations:** Window patching applies transparent film
for product visibility. Insertion systems add coupons, samples, or promotional
materials. Braille embossing creates accessibility features. Foil stamping
and embossing can integrate inline for premium effects. Each addition
complicates setup and reduces effective speed.

**Quality Considerations:** Proper fold alignment ensures consistent glue
pattern application. Insufficient compression results in pop-opens. Excess
glue causes ooze and contamination. Skewed folding creates out-of-square
boxes that jam filling equipment. Regular glue pattern verification and bond
testing prevent field failures.
"""

version = "0.0.1"
