Packaging Definitions: Complete Glossary of Printing Terminology

Technical packaging terminology can feel like a foreign language, even for professionals who have worked in the industry for years. This A-Z glossary defines the terms most commonly used in packaging design, materials science, printing production, and logistics — organized to give brand managers, designers, printers, procurement teams, and packaging engineers a shared reference point.

Who Should Use This Glossary

Any professional involved in packaging production will find this reference useful: packaging designers, brand managers, production managers, print buyers, prepress technicians, packaging engineers, supply chain managers, regulatory compliance officers, sales and marketing teams, quality assurance personnel, and artwork coordinators.

Numerical Terms

0100

Sheets or rolls suitable for commercial printing on one side only.

0201

Standard regular slotted container (RSC) — outer flaps meet the center of the box for top and bottom sealing. The most widely used corrugated box style.

0300

Telescope-style box consisting of more than one piece with a separate lid.

0400

Folder-style box with hinges and interlocking tabs.

0500

Multi-piece box style in which the pieces slide into each other in multiple directions.

0600

Two-piece rigid-style box, assembled before use. Used for large industrial applications.

0700

Single-piece flat-packed container that ships flat and requires minimal assembly before use.

0900

Interior packaging components — partitions, pads, and liners — used as a single unit inside an outer box.

3PL

Third-party logistics. A company that provides outsourced warehousing, fulfillment, and transportation services.

A

Abrasion Resistance

The ability of a packaging material or print finish to withstand surface damage from rubbing, scratching, or wrapping. Important for retail shelf packaging and transport outer cartons.

Adhesive

A substance that bonds packaging surfaces together. Common in box assembly, label application, and lamination.

A-Flute

The thickest corrugated flute type, providing the highest cushioning against shock. Used for heavy or fragile items requiring maximum impact protection.

Aerosol

A pressurized container that uses compressed or liquefied gas to discharge its contents through a valve. Must meet specific pressure resistance and gas-tight construction standards.

Amber Glass

Brown-tinted glass that filters UV light, protecting light-sensitive products such as pharmaceuticals, essential oils, and craft beer from light degradation.

Anti-Skid Corrugated

Corrugated board with a surface treatment that increases friction between stacked pallets, reducing movement and preventing load collapse during transport.

AQL (Acceptable Quality Level)

The maximum allowable percentage of defective units in a production batch, as defined by quality assurance guidelines.

Artwork

The visual design files — including logo, typography, imagery, and color values — used to print a packaging box or label. Typically delivered as print-ready PDF, AI, or EPS files.

Aseptic Packaging

A technique that sterilizes both the product and the packaging separately, then seals them in a sterile environment. Allows room-temperature storage without refrigeration.

B

Bag-in-Box

A sealed flexible plastic bag inside a rigid outer box. Common for liquids such as wine, juice, and industrial fluids.

Barcode

A machine-readable code on packaging that encodes product information such as SKU, price, and inventory data. Scanned at retail checkout and through supply chain processes.

Barrier Material

Any packaging material that limits the passage of moisture, gas, oxygen, light, or microorganisms to protect the product inside.

B-Flute

A medium-thickness corrugated flute. Good stacking strength and puncture resistance. Common in canned goods displays and retail packaging.

Biodegradable

A material that can be broken down naturally by bacteria and other living organisms into non-toxic components. Used in sustainable packaging as an alternative to conventional plastics.

Blister Pack

Packaging made from a pre-formed transparent plastic cavity sealed to a backing such as paperboard or foil. Common in pharmaceuticals, hardware, and consumer electronics for tamper-evident presentation.

Blow Molding

A manufacturing process for making hollow plastic containers — bottles, jugs, and tanks — by inflating molten plastic inside a mold using air pressure.

Branding

The visual identity elements applied to packaging — logo, color scheme, typography, pattern, tagline — that help customers recognize a product or brand instantly.

Bubble Pack

Packaging that uses sealed air pockets to cushion and protect products from impact during shipping and handling.

C

CAD (Computer-Aided Design)

Software used to create precise structural packaging drawings, dielines, and engineering specifications in digital format.

Carton Board

A paperboard material stiffer than standard board, used for folding carton boxes. Resistant to compression and moisture deformation.

C-Flute

The most widely used corrugated flute type. Balances crush resistance and printing properties. The standard for general shipping boxes.

CMYK

Cyan, Magenta, Yellow, and Key (Black) — the four-color printing process used in commercial printing. All packaging print files should be in CMYK mode before going to press.

Closed Loop System

A manufacturing system that reuses, recycles, or composts all waste materials produced, with the goal of zero material going to landfill.

CNC Routing

Computer numerical control routing — a precision cutting process used to create custom packaging shapes from foam, wood, and composite materials.

Collapsible Box

A box designed to fold flat for efficient storage and bulk transport, then assembled at point of use.

Conductive Packaging

Packaging with electrical conductivity properties that dissipate electrostatic charge, protecting sensitive electronic components from ESD damage.

Contract Packaging

Outsourcing packaging operations to a third-party company. Includes filling, labeling, bundling, and kitting services.

Corrugated Board

A structural packaging material consisting of one or more fluted paper layers sandwiched between flat liner sheets. The fluting provides strength and cushioning.

CQV

Commissioning, Qualifying, and Verifying — management methods used to ensure packaging equipment and systems meet performance standards.

D

Dieline

A flat, 2D template showing all panels, fold lines, cut lines, and bleed areas of a packaging box. Used as the starting point for all structural and graphic design work.

DIM Weight (Dimensional Weight)

A pricing method used by shipping carriers where the billable weight is the greater of the package’s actual weight or its calculated volume weight. A key factor in shipping cost management.

Direct Food Contact

Physical contact between a packaging material and food. Subject to strict regulations governing material safety, ink migration, and coating formulations.

Displays

Point-of-sale packaging structures designed to showcase products at retail — including floor-standing units, counter displays, and shelf-ready cases. Often made from corrugated board.

Double-Wall Board

Corrugated board with two layers of fluting between three liners. Significantly stronger than single-wall corrugated; used for heavy or fragile products requiring extra crush resistance.

Duplex

Paperboard made from two combined layers, often coated for moisture resistance. Common in pharmaceutical packaging, food cartons, and paper cups.

E

E-Flute

A thin corrugated flute that provides a smooth, printable outer surface while retaining corrugated strength. Used for retail packaging, cosmetics cartons, and mailer boxes requiring high-quality graphics.

Ecommerce Packaging

Packaging designed specifically for direct-to-consumer shipping — prioritizing product protection during parcel transit, branded unboxing experience, and efficient box-to-product sizing.

EMC (Electromagnetic Compatibility)

A packaging property relevant to electronics shipping. EMC-rated packaging shields contents from electromagnetic interference during transport.

Embossing

A finishing technique that uses a male and female die set to press a raised three-dimensional design into paper or packaging material. Creates a tactile, premium visual effect without ink or color.

F

F-Flute

The finest corrugated flute, closest to paperboard in thickness. Provides a very smooth print surface with solid corrugated structure. Used for cosmetics, food, and specialty retail packaging.

Flat Pack

Packaging that ships and stores in a flat, collapsed form, then is assembled by the end user. Reduces shipping and storage volume significantly.

Flexographic Printing (Flexo)

A printing method using flexible rubber or photopolymer relief plates. The dominant printing method for corrugated boxes and kraft substrates. Efficient at high volumes.

Flood Coat

Application of a uniform layer of ink or coating over the entire surface of a printing substrate.

Flute

The wavy, corrugated paper layer sandwiched between the liners of a corrugated board. The flute type (A, B, C, E, F) determines cushioning, strength, and thickness.

Flute Direction

The orientation of the corrugated flutes relative to the box panels. Flute direction determines which axis of the box has the most compression strength.

Foil Stamping

A finishing technique that transfers metallic or pigmented foil onto a packaging surface using heat and pressure. Creates shiny accents on logos, brand marks, or design elements.

FSC (Forest Stewardship Council)

Certification that packaging materials were sourced from responsibly managed forests. Used by brands to substantiate sustainable sourcing claims.

G

G-Force

A measurement of acceleration force acting on a package during transport and handling. Used in transit testing to simulate real-world shipping conditions.

Gloss Coating

A surface treatment applied to packaging that increases light reflection, intensifying color vibrancy and providing a high-shine visual effect. Also adds surface protection.

GSM (Grams per Square Meter)

The standard unit for measuring the weight of paper and board substrates. Higher GSM indicates thicker, heavier material.

H

HDPE (High-Density Polyethylene)

A rigid, impact-resistant plastic used in blow-molded containers, bottles, and bags. Resistant to cracking; commonly used for food, household chemical, and personal care packaging.

Heat Seal

A method for sealing flexible packaging by applying heat and pressure to bond two thermoplastic layers together, creating an airtight or tamper-evident closure.

Hermetic Seal

An airtight seal that prevents the passage of air or gas in or out of the package. Required for products sensitive to oxidation or atmospheric moisture.

HIPS (High Impact Polystyrene)

A rigid thermoplastic used for packaging trays, lids, and containers. Offers good impact resistance and ease of thermoforming.

I

Impact Strength

The ability of packaging material to resist fracture or deformation when subjected to sudden force, such as a drop or collision during transit.

Inkjet Printing

A non-contact digital printing method that propels droplets of ink directly onto a substrate. Used for variable data printing, short runs, and personalized packaging.

Internal Dimensions

The measurements of a box or container taken from the inside — the space available for the product. Distinct from external dimensions, which include board thickness.

IP Rating (Ingress Protection)

A classification system for the effectiveness of a packaging enclosure against foreign objects such as dust or water. Higher numbers indicate greater protection.

ISO 9001

An internationally recognized quality management standard. ISO 9001 certification indicates a company’s processes meet consistent quality requirements across production runs.

ISO 14001

An international environmental management standard. Guides companies in setting and maintaining frameworks for environmental performance and sustainability compliance.

ISTA (International Safe Transit Association)

An organization that develops and publishes testing protocols for packaging performance in transit. ISTA-certified testing is required by some buyers and retailers to verify packaging durability.

J

Jigsaw Packs

Custom-shaped packaging components that interlock to hold products securely in place inside an outer box, eliminating the need for separate void fill.

JIT (Just-In-Time)

An inventory management strategy that aligns raw material deliveries with production schedules to minimize on-hand inventory and reduce carrying costs.

K

Kraft

Unbleached paper made from wood pulp using the kraft chemical process. Characterized by its brown color, high strength, and natural appearance. Widely used in sustainable packaging, shipping boxes, and bags.

L

Labels

Printed materials applied to packaging surfaces to communicate product information, branding, barcodes, regulatory compliance data, and usage instructions.

Laser Etching

A process that uses a laser beam to engrave or mark packaging surfaces without contact. Used for barcodes, serial numbers, and decorative effects on rigid packaging.

Lead Time

The total elapsed time from order placement to delivery — including production, quality control, and shipping. A key operational variable in packaging procurement planning.

Lightweighting

The practice of reducing the amount of material used in packaging without compromising structural performance. Reduces per-unit material cost and shipping weight.

Liner

The flat paper sheets that form the outer surfaces of a corrugated board. The quality of the liner determines printability and surface smoothness.

Litho Lamination

A printing method where high-quality offset-printed paper is laminated onto a corrugated board surface. Produces photographic-quality graphics on corrugated packaging — the standard for premium retail display boxes.

Lithography (Offset)

A printing process using flat metal plates to transfer ink to a rubber blanket, which then applies it to the substrate. Produces the highest color accuracy and image quality of commercial printing methods.

M

Matte Finish

A coating applied to packaging that absorbs light rather than reflecting it, creating a flat, non-shiny surface. Communicates understated premium quality and reduces fingerprinting on handled surfaces.

MLT (Manufacturing Lead Time)

The total time required to produce a packaging order from raw material to finished product — including setup, production, drying, finishing, and quality control.

MOQ (Minimum Order Quantity)

The lowest quantity a supplier will accept for a single production order. A key variable in packaging procurement for small and growing brands.

Mold Seam

A visible line on a molded plastic or glass container created at the joint between two halves of the production mold. A quality indicator in blow-molded and injection-molded packaging.

Multi-Trip Packaging

Packaging designed to be used multiple times before being discarded or recycled. Reduces per-use material cost and environmental impact over the packaging lifecycle.

N

NATO Part Number

A standardized part numbering system used in military and defense supply chains for identifying and tracking packaging components and materials.

Nesting Containers

Containers with sloped side walls that allow them to stack inside each other when empty, reducing storage and return-transport space significantly.

O

Offset Printing

A printing method where ink is transferred from a metal plate to a rubber blanket before being applied to the substrate. Produces precise color matching, fine detail, and consistent results across large print runs. The standard for folding carton packaging.

Overprint

Printing one color directly over another. Used intentionally for creative layering effects; used in prepress to ensure black text prints solidly without gaps.

P

Packaging

The science, art, and technology of enclosing or protecting products for distribution, storage, sale, and use. Encompasses materials, structural design, graphics, and supply chain integration.

Pallets

Flat platforms — typically wood or plastic — used to support and transport stacked packaging units. Enable movement by forklift or pallet jack in warehousing and freight operations.

Pantone (PMS)

The Pantone Matching System — a standardized color language used in printing to specify exact ink colors independent of the equipment used. Critical for consistent brand color reproduction across print runs and suppliers.

PE (Polyethylene)

The most widely used plastic material in packaging. Available in low density (LDPE — flexible films and bags) and high density (HDPE — rigid containers). Each offers different flexibility, strength, and chemical resistance characteristics.

PMS (Pantone Matching System)

See Pantone.

Point of Sale (POS)

The retail location where a purchase transaction occurs. Packaging designed for point of sale prioritizes shelf impact, brand visibility, and clear product communication.

Polypropylene (PP)

A versatile thermoplastic polymer used for packaging films, caps, closures, containers, and corrugated alternatives. Resistant to fatigue and stress cracking.

Polystyrene (PS)

A thermoplastic used in foam (EPS) and rigid (HIPS) packaging applications. Expanded polystyrene provides thermal insulation and cushioning; high-impact polystyrene is used for rigid packaging and trays.

Q

Quote (Packaging Quote)

A documented price estimate for a specific packaging order — including material, quantity, print specification, finishing, and lead time. Typically provided by a sales representative or estimator.

R

Recyclable

Packaging material that can be processed and remanufactured into new materials rather than going to landfill. Recyclability depends on material type, coating, and local recycling infrastructure.

Registration

Precise alignment of multiple print layers or colors on a packaging substrate. Misregistration results in blurry text, color halos, or offset graphics.

Retail Packaging

Packaging designed for consumer-facing display and sale on a shelf or in an ecommerce listing. Prioritizes visual appeal, brand communication, regulatory compliance labeling, and shelf presence.

RFQ (Request for Quotation)

A formal request to a supplier for a price estimate on a specified packaging product or order.

Rotary Die Cutting

A die-cutting process using a cylindrical die on a rotary press. Faster than flatbed die cutting and typically done inline with printing for high-volume production.

Run

A single production batch of a packaging product. Run length refers to the total quantity produced in one production cycle.

S

Silk Screen Printing

A printing technique in which ink is transferred through a mesh screen to a substrate, with a stencil blocking areas where ink should not print. Used for containers, liners, and specialty packaging.

SKU (Stock-Keeping Unit)

A unique identifier code assigned to a specific product variant. Used in inventory management, order fulfillment, and barcode systems to track individual products across the supply chain.

SLA (Service Level Agreement)

A contract between a packaging supplier and a buyer that defines performance expectations — including lead times, quality standards, defect tolerances, and communication requirements.

Sleeve

A paperboard band or wrap that slides over a primary container or box, providing additional branding surface and a premium retail presentation without a fully enclosed secondary box.

Sourcing

The process of identifying, evaluating, and selecting packaging suppliers and materials to meet cost, quality, sustainability, and lead time requirements.

Stack Height

The maximum height to which packaged units can be safely stacked during storage or transport without causing structural failure or product damage.

Substrate

The base material onto which printing, coating, or lamination is applied. In packaging, substrates include paperboard, corrugated board, kraft paper, plastic film, and foil.

T

Test Liner

A lower-grade recycled paper liner used on the inside face of corrugated board where print quality is not required.

Thermoforming

A manufacturing process in which a plastic sheet is heated until pliable, then shaped over a mold using vacuum or pressure. Used for blister packs, clamshells, trays, and food containers.

Transit Damage

Physical damage to a product or its packaging that occurs during transportation — from impact, vibration, compression, moisture, or temperature variation.

Tri-Wall

Triple-wall corrugated board — three layers of fluting between four liners. Provides the highest structural strength in the corrugated family. Used for heavy industrial packaging and large-format shipping containers.

Tubes

Cylindrical packaging containers made from wound paper, cardboard, or plastic. Used for cosmetics, food, posters, and specialty products.

Turkey Lock

A self-locking tuck tab used on folding carton boxes that holds the closure panel securely without glue.

U

Ultrasonic Welding

An industrial bonding technique that uses high-frequency ultrasonic vibrations to weld thermoplastic packaging components together without adhesives or solvents.

V

Varnish

A liquid coating applied to printed packaging for surface protection and visual effect. Available in gloss, matte, and satin finishes; applied inline with printing or as a separate process.

VCI (Vapor Corrosion Inhibitor)

A packaging material or coating that releases a protective vapor to inhibit corrosion on metal products. Used for industrial components, tools, and electronics packaging.

Vector Graphic

A digital image made from mathematical paths rather than pixels. Can be scaled to any size without quality loss. The required format for logos and brand marks in packaging artwork files.

Void Fill

Cushioning material — bubble wrap, air pillows, packing paper, or foam — used to fill empty space in a shipping box, preventing the product from shifting and absorbing impact energy.

Volume Resistivity

A measurement of a packaging material’s electrical resistance. Critical for ESD-protective packaging used with sensitive electronic components.

W

Warehousing

The storage of packaging materials, components, or finished packaged goods prior to distribution or fulfillment.

Wastage

Material lost during the production process — from cutting, trimming, spoilage, or setup. Expressed as a percentage of total material consumed and factored into production cost and material ordering.

Waterjet Cutting

A cutting process that uses a high-pressure water stream to cut packaging materials and foam inserts without heat or mechanical stress.

X

Xtrabag

A lightweight, durable plastic case format used for protective transport applications.

Y

Yield Value

In printing ink, the minimum force required to initiate ink flow. Affects print quality and coverage consistency across a production run.

Z

Zarges

A manufacturer of aluminum shipping cases and containers used in industrial, military, and professional transport applications.

Frequently Asked Questions

What are the most common types of packaging?

The most widely used packaging types include mailer boxes, ecommerce shipping boxes, folding cartons, cosmetic packaging, retail packaging, CBD packaging, and food packaging. The right type depends on the product’s weight, fragility, distribution channel, and brand positioning.

What is the difference between cardboard and corrugated packaging?

Cardboard (folding carton) is a single-layer paperboard used for lightweight retail packaging where print quality and visual presentation are the priority. Corrugated carton has a fluted inner layer sandwiched between two liner sheets, providing structural strength, cushioning, and stacking resistance. Corrugated is the standard for shipping and transport; cardboard is the standard for retail shelf display.

Why is packaging terminology important?

Shared terminology reduces miscommunication between brand managers, designers, printers, and suppliers. Using the correct terms when specifying packaging — substrate, flute type, finish, dimensions, MOQ, lead time — ensures that every party in the production chain understands exactly what is being ordered and at what standard.

What does MOQ mean in packaging?

Minimum Order Quantity — the smallest production run a supplier will accept for a custom packaging order. MOQ varies by supplier, material, and print method. Digital printing typically allows lower MOQs than offset or flexo printing, which have higher setup costs that only become cost-effective at larger volumes.

What are the most common food packaging types?

Common food packaging types include kraft boxes, folding cartons, corrugated shipping cases, flexible pouches, glass jars, metal tins, and rigid plastic containers. Each format provides specific barrier properties, freshness protection, and presentation characteristics suited to different food categories.

What does retail packaging mean?

Retail packaging is any packaging designed for consumer-facing display and sale on a shelf or in an ecommerce listing. Retail packaging prioritizes visual appeal, brand communication, regulatory compliance labeling, and the shelf presence needed to compete at point of purchase.

What does bulk packaging mean?

Bulk packaging holds large quantities of a product for efficient transport, storage, and distribution. It prioritizes structural strength, cost efficiency at volume, and ease of handling over visual presentation. Bulk packaging is typically the outer layer in multi-level packaging systems — with a separate retail package inside.

EdgeCraft Packaging designs and manufactures custom boxes, mailers, and specialty packaging with full-color printing and premium finish options. Request a quote to start your packaging project.