Cannabis Packaging Glossary

A mylar bag is a multi-layer flexible packaging pouch constructed from laminated films-typically PET (polyethylene terephthalate), aluminum foil, and LLDPE (linear low-density polyethylene). Despite the name, genuine mylar bags contain no bare polyester film alone; they rely on a 3-to-5 layer lamination stack to achieve barrier performance. The PET outer layer provides structural strength and printability, the aluminum foil core (typically 7-12 microns) blocks oxygen, moisture, and light at 99.9%+ efficiency, and the LLDPE inner layer enables heat-sealing at 160-200°C. Total film thickness usually runs 100-150 microns. Mylar bags dominate cannabis packaging because they preserve terpene profiles for 12+ months when properly sealed, block UV degradation, and meet child-resistant requirements when paired with a CR zipper. The term "mylar" is technically a DuPont trademark for BoPET film, but the industry uses it generically for any foil-laminate stand-up pouch.

PET/AL/LLDPE is the standard three-layer laminate structure used in premium cannabis mylar bags. Each layer serves a distinct function. PET (polyethylene terephthalate) is the outermost layer, typically 12 microns thick, providing tensile strength, puncture resistance, and a printable surface for flexographic or rotogravure ink. AL (aluminum foil) is the middle barrier layer, usually 7-9 microns, delivering 99.9% oxygen and moisture transmission rate below 0.01 cc/m²/day-effectively impermeable. LLDPE (linear low-density polyethylene) is the innermost heat-seal layer, 40-60 microns, which melts at 120-130°C to create the bag's seals. Combined, the stack totals 60-80 microns before lamination adhesives add another 3-5 microns per glue line. Some bags add a fourth layer-nylon for puncture resistance or a matte PET for aesthetic finish. The PET/AL/LLDPE construction outperforms metalized film alternatives by 50-100x on oxygen transmission because metalized film deposits only a fraction of a micron of aluminum, not a continuous foil barrier.

Metalized film and aluminum foil are frequently confused, but they're fundamentally different materials with drastically different barrier performance. Aluminum foil is a solid metal sheet rolled to 6-12 microns thickness; it provides a 99.9%+ barrier to oxygen, moisture, and light because it's a continuous metal layer with zero pinholes (at 9+ microns). Metalized film is PET or CPP film with a microscopic layer of aluminum vapor-deposited onto its surface-typically only 20-50 nanometers thick, roughly 1/500th the thickness of real foil. That ultra-thin coating delivers a metallic appearance but offers oxygen transmission rates 50-200x higher than true foil, meaning it doesn't protect terpenes or cannabinoids from oxidation adequately for long-term cannabis storage. Many cheap "mylar bags" on the market use metalized film instead of real aluminum foil-they look identical but fail barrier testing. Genuine cannabis-grade mylar always specifies a discrete AL (aluminum foil) layer, not a metalized coating. If a supplier can't tell you the foil thickness in microns, you're likely buying metalized film.

HDPE (high-density polyethylene) is a rigid thermoplastic polymer used primarily for cannabis pop-top bottles and child-resistant vials. With a density of 0.93-0.97 g/cm³, HDPE is stiffer and more opaque than its cousin LDPE, making it ideal for squeeze-to-open containers. Cannabis pop-top bottles typically use HDPE with wall thicknesses ranging from 0.8-1.5mm depending on dram size-13dr bottles run 0.8-1.0mm walls, while 19dr and larger sizes step up to 1.2-1.5mm for structural integrity. HDPE's moisture vapor transmission rate is roughly 1.2 g/m²/day at 38°C and 90% RH, which is adequate for flower storage up to 6 months. The material is FDA-compliant under 21 CFR 177.1520 for food-contact applications and resists most solvents, though it's not suitable for concentrate containers that require chemical inertness. HDPE pop-tops are recyclable as SPI Code 2 and dominate dispensary retail because they're inexpensive-$0.08-0.15 per unit wholesale-and pass ASTM D3475 child-resistant testing reliably.

Polypropylene (PP) is a thermoplastic polymer widely used for cannabis pre-roll tubes (doob tubes) and child-resistant concentrate containers. PP has a density of 0.90 g/cm³-lighter than HDPE-and offers higher heat resistance up to 120°C before deformation, compared to HDPE's 110°C softening point. Pre-roll tubes typically use injection-molded PP with wall thicknesses of 0.8-1.2mm, providing enough rigidity to protect joints while remaining squeezable for pop-top opening mechanisms. PP's moisture vapor transmission rate sits at approximately 1.5-2.0 g/m²/day at 38°C, slightly higher than HDPE but acceptable for short-term pre-roll storage. The material is FDA-compliant under 21 CFR 177.1520(a) and classified as SPI Code 5 for recycling. PP is chosen over HDPE for tubes because it has better flex-crack resistance-tubes that get opened and closed repeatedly won't crack at the hinge point. PP also accepts silk-screen printing and shrink-sleeve labeling more readily than HDPE, making it the default for branded pre-roll packaging.

Borosilicate glass is a specialized glass formulation containing 12-15% boron trioxide (B₂O₃) alongside silica (SiO₂) and sodium oxide (Na₂O), engineered for exceptional thermal shock resistance and chemical inertness. Unlike standard soda-lime glass, borosilicate can withstand temperature differentials of up to 165°C without cracking-meaning you can go from freezer to room temperature without shatter risk. This matters for cannabis concentrate jars because consumers often refrigerate or freeze waxes, shatters, and live resins. Borosilicate has a coefficient of thermal expansion of 3.3 × 10⁻⁶/K, roughly one-third that of soda-lime glass (9 × 10⁻⁶/K). It's also chemically inert, meaning it won't leach into terpene-rich concentrates even after months of contact. Common cannabis container sizes include 5ml, 9ml, and 15ml jars with 1.5-2.5mm wall thickness. Borosilicate costs 2-4x more than soda-lime alternatives, but premium brands choose it because it signals quality and prevents the cracking that plagues cheaper glass at temperature extremes.

BOPET (biaxially oriented polyethylene terephthalate) is the technical name for the polyester film most people call "mylar"-a DuPont trademark that became generic. The "biaxially oriented" part is critical: the film is stretched in two perpendicular directions (machine and transverse) during manufacturing, which aligns the polymer chains and dramatically increases tensile strength, clarity, and dimensional stability. BOPET film used in cannabis packaging typically runs 12 microns thick, with a tensile strength of 200-250 MPa in the machine direction-about 5x stronger than non-oriented PET. BOPET's key advantage is its ability to accept metallization and lamination while maintaining structural integrity at temperatures up to 150°C during heat-sealing. It serves as the outermost printable layer in PET/AL/LLDPE laminates. The film's low oxygen transmission rate (approximately 15 cc/m²/day at 23°C) also contributes modest barrier properties, though it's the aluminum foil layer that does the heavy lifting. BOPET is why genuine mylar bags feel crisp and hold their shape.

Shrink sleeve material is a heat-shrinkable film used to label cannabis containers-pop-top bottles, pre-roll tubes, and concentrate jars-with full-coverage 360° graphics. Three primary substrates dominate: PVC (polyvinyl chloride), PETG (glycol-modified PET), and OPS (oriented polystyrene). PVC shrinks at 80-100°C and offers shrink rates of 50-60%, making it the cheapest option at $0.02-0.04 per sleeve, but it's environmentally problematic and banned in some states. PETG requires higher shrink temperatures of 120-150°C but delivers superior print quality and shrink uniformity (60-70% shrink rate); it's the premium choice for branded cannabis packaging. OPS shrinks at 100-120°C with 70-75% shrink rate and sits between PVC and PETG in cost. Sleeve thickness typically runs 40-60 microns. The shrink tunnel temperature must be calibrated to the substrate-too hot and you get ink distortion; too cool and you get incomplete shrink with wrinkles. PETG is the current industry standard for cannabis because it's FDA-compliant under 21 CFR 177.1315.

A CR zipper (child-resistant zipper) is a specialized reclosable fastening mechanism designed to prevent children under 5 years old from opening cannabis packaging while remaining operable by adults. Unlike standard press-to-close zippers, CR zippers use a pinch-and-slide mechanism: the user must simultaneously pinch two opposing tabs and slide them along the track to disengage the interlocking elements. This dual-action requirement defeats the grip-and-pull instinct that allows children to open standard ziplocks. CR zippers are tested under 16 CFR 1700.20, which requires 200 children aged 42-51 months to attempt opening the package; 85% must fail before a demonstration, and 80% must fail even after a demonstration. The zippers typically use a two-track design with 5-8mm wide pinch tabs and require 15-25N of force to separate-enough to challenge small hands but manageable for adults. CR zippers add $0.03-0.06 per bag compared to standard zippers and are mandatory for cannabis packaging in all US legal markets.

A press-to-close zipper is the standard reclosable fastening system found on everyday food bags-the familiar interlocking plastic ridge-and-groove design that snaps together when pressed. In cannabis packaging, press-to-close zippers are used for products that are already enclosed in child-resistant outer packaging or for CBD products that don't require CR certification. The mechanism consists of two mating profiles: a male rib (approximately 2-3mm wide) and a female channel that interlock when finger pressure is applied along the seal line. Opening requires a simple peel-apart motion, making it completely accessible to children. Press-to-close zippers are not child-resistant and cannot pass 16 CFR 1700.20 or ASTM D3475 testing. They're significantly cheaper than CR zippers-$0.005-0.01 per unit-and provide airtight reclosure with oxygen transmission rates around 2-5 cc/m²/day. Some manufacturers combine a press-to-close zipper with a CR slider for dual functionality: the slider provides child resistance, while the press-to-close allows adult-only resealing.

A heat seal is the thermal bonding process that fuses thermoplastic layers together to create an airtight, tamper-evident closure on flexible cannabis packaging. The process uses a heated sealing bar (typically 160-200°C for LLDPE inner layers) that applies pressure (200-400 kPa) to the film for a specific dwell time (0.5-2.0 seconds). The three variables-temperature, pressure, and dwell time-must be calibrated to the film structure. Too hot and the LLDPE melts through to the aluminum layer, causing seal failure; too cool and the polymer chains don't interlock fully, resulting in weak seals that fail leak testing. Properly executed heat seals on PET/AL/LLDPE film achieve peel strengths of 8-15 N per 15mm width, exceeding the 5N minimum required by ASTM F1929. Heat seals are used at the top and bottom of stand-up pouches and for transverse seals on flat bags. In cannabis packaging, the top heat seal is often combined with a tear notch for easy opening, while the bottom seal must support the weight of product when the pouch stands upright.

An induction seal is a non-contact hermetic sealing process that bonds a foil liner to the mouth of a container using electromagnetic induction heating. The system works by passing the capped container under an induction coil that generates a high-frequency electromagnetic field (typically 25-50 kW at 25-40 kHz), which heats the aluminum foil layer of the liner to 140-160°C in 0.5-2.0 seconds. The heated foil melts a heat-sealable polymer coating (usually PET or PP film) on its underside, fusing it to the container's rim. Cannabis pop-top bottles and concentrate jars sometimes use induction seals for tamper evidence and freshness preservation. The liner is typically a 3-layer construction: pulpboard backing (0.3-0.5mm), aluminum foil (25-40 microns), and a heat-sealable coating (15-25 microns). Induction seals provide 100% oxygen barrier at the seal point and leave visible evidence if the container has been opened-consumers must peel the foil off the rim before accessing product. Minimum container wall thickness for reliable induction sealing is 0.8mm.

A tamper-evident seal is a packaging feature that provides visible, irreversible evidence that a container has been opened or interfered with after leaving the manufacturer. Unlike tamper-proof packaging (which implies impossibility of tampering-a misnomer since any package can be defeated), tamper-evident seals make tampering obvious through physical changes: VOID labels that leave the word "VOID" permanently on the container surface when peeled, shrink bands that must be torn to access the closure, breakaway tamper rings on bottle caps that separate upon first opening, and foil induction seals that must be pierced. In cannabis packaging, tamper-evident features are required under state regulations in most legal markets-California, Colorado, Oregon, and Washington all mandate tamper-evident packaging for flower and concentrate products. The FDA defines tamper-evident packaging under 21 CFR 211.132 for OTC drugs, and many cannabis regulators reference this standard. Tamper-evident shrink bands cost $0.01-0.03 per unit and are the most common solution for cannabis bottles; VOID labels add $0.005-0.015 per unit for flexible packaging.

A pop-top closure is a child-resistant bottle opening mechanism that requires the user to squeeze the container's sides with sufficient force to flex the lid open. The design uses two opposing pressure points on the bottle body that, when squeezed simultaneously, deform the plastic enough to disengage a locking lip on the lid. Pop-tops are certified under ASTM D3475, which classifies them as child-resistant packaging. Squeeze force requirements typically range from 25-35N, which exceeds the grip strength of most children under 5 (average grip strength of 10-20N for that age group) but remains accessible to adults. HDPE pop-top bottles are the dominant flower container in US dispensaries because they're inexpensive ($0.08-0.15 wholesale), meet child-resistant requirements out of the box, and provide an audible "pop" that signals the seal has been broken-doubling as tamper evidence. Common sizes include 13dr (holds 1/8 oz), 16dr (quarter), and 19dr (half ounce). The closure is single-use per opening cycle; once popped, the bottle must be resealed by pressing the lid down until it clicks.

16 CFR 1700.20 is the US Consumer Product Safety Commission (CPSC) regulation that establishes the testing protocol for child-resistant packaging. It's the federal standard that all cannabis packaging must meet to legally sell in regulated markets. The protocol requires testing with 200 children aged 42-51 months (3.5 to 4.25 years old), divided into groups of 50. In the first test, 85% of children must fail to open the package within 10 minutes before a demonstration. After a 5-minute demonstration of how to open it, 80% must still fail within 5 additional minutes. A separate test with 100 adults aged 50-70 requires that 90% can open and properly reclose the package within 5 minutes. The regulation was originally written for household chemicals and pharmaceuticals under the Poison Prevention Packaging Act of 1970, but state cannabis regulators universally reference it. Testing costs $3,000-8,000 per package design and takes 4-8 weeks at accredited labs. Failed designs must be reengineered and retested, which is why cannabis packaging suppliers invest heavily in proven closure designs.

ASTM D3475 is the ASTM International standard classification for child-resistant packaging, distinct from 16 CFR 1700.20 in scope and application. While 1700.20 is a regulatory testing protocol enforced by the CPSC, D3475 is a voluntary consensus standard that classifies packaging systems into categories based on their child-resistant mechanisms. It defines performance categories like CR (child-resistant), CR/SR (child-resistant and senior-friendly), and non-CR packaging. D3475 provides the technical framework that packaging engineers use to design closures-specifying force ranges, opening sequences, and reclosure requirements-that then get validated under the 1700.20 protocol. The key difference: 1700.20 tells you how to test; D3475 tells you how to classify and engineer. ASTM D3475 is frequently referenced in state cannabis regulations as the standard for determining whether a package qualifies as child-resistant. It categorizes mechanisms including squeeze-and-turn, push-and-turn, squeeze-and-pull, pinch-and-slide, and combinations thereof. Pop-top bottles are classified under D3475 as squeeze-to-open CR packaging. Many dispensaries require D3475 certification documentation from suppliers before accepting packaging for retail.

FDA food-grade compliance refers to packaging materials meeting the US Food and Drug Administration's regulations for food-contact substances, codified in 21 CFR Parts 174 through 186. These regulations specify which polymers, additives, and adhesives are permitted in materials that touch consumable products, including cannabis flower and concentrates. Part 175 covers indirect food additives from adhesives and components of coatings; Part 177 covers specific polymers like PET (177.1630), HDPE (177.1520), and PP (177.1520); Part 178 covers adjuvants and production aids. For cannabis packaging, compliance means the inner layer of a mylar bag (usually LLDPE), the interior of a pop-top bottle (HDPE), or the surface of a concentrate jar (glass or PP) won't leach harmful chemicals into the product at concentrations exceeding FDA migration limits-typically 0.5 mg/kg or below. While cannabis isn't FDA-regulated at the federal level, every state with legal cannabis requires food-grade compliance documentation for packaging materials. Suppliers must provide migration testing data or FDA compliance letters. Non-compliant materials risk leaching plasticizers, BPA, or heavy metals into concentrates.

Health Canada plain packaging for cannabis is mandated under the Cannabis Regulations (SOR/2018-144), which took effect October 17, 2018. The regulations require that all cannabis product packaging sold in Canada be plain-meaning single-color printing, no gloss or metallic finishes, no brand logos, and no promotional imagery. Allowed colors are limited to one brand color plus white or black text. Packaging surfaces must display the standardized cannabis symbol, health warning messages covering at least 50% of the principal display panel, and mandatory information including THC/CBD content, producer license number, and lot number. The standardized symbol must be at least 1.2cm in its largest dimension. Packaging shapes are regulated to prevent novelty containers that might appeal to youth. No stickers, hangtags, or secondary decorative elements are permitted. The regulations also prohibit packaging that resembles food, beverages, or candy. Violations carry penalties up to $5 million CAD and 3 years imprisonment. Canadian dispensaries cannot sell product in non-compliant packaging, meaning all producers must source Canada-specific packaging designs that differ from their US or European SKUs.

The standardized cannabis symbol is the mandatory warning mark required on cannabis product packaging in Canada and certain US states. In Canada, it's defined under SOR/2018-144 as a red octagon with a black THC leaf symbol inside, resembling a stop sign. The symbol must measure at least 1.2cm in its largest dimension and appear on the principal display panel. The red used is specified as a defined color reference within the regulations-not any red, but a specific Pantone-matched hue. The octagon shape signals "stop" universally, communicating caution even without literacy. US states have adopted similar symbols: California requires a triangular warning with "CA" and a cannabis leaf; Colorado uses a diamond-shaped THC warning; New York's universal symbol is a red triangle containing the letters "NY" and a cannabis leaf. The IICPS (International Intoxicating Cannabis Product Symbol) is a proposed universal standard featuring a red stop-sign octagon with a cannabis leaf, gaining traction across multiple jurisdictions. Symbols must be printed in full-monochrome or outline versions are not acceptable. Minimum size requirements vary by state, ranging from 0.5 inch (CO) to 1.2cm (Canada).

The universal cannabis symbol refers to the state-specific warning marks required on cannabis product packaging to indicate the contents are intoxicating. Unlike Canada's single national symbol, the US has a fragmented landscape where each legal state defines its own mandatory symbol. California requires a red triangle (equilateral, 0.5 inch minimum) containing "CA" and a cannabis leaf silhouette. Colorado mandates a red diamond with "THC" and a leaf, minimum 0.5 inch. New York's universal symbol is a red triangle with "NY" and a cannabis leaf. Oregon requires a red rectangle with "MARIJUANA" text. Massachusetts uses a red octagon with a leaf. The IICPS (International Intoxicating Cannabis Product Symbol)-a red octagon with a standardized leaf graphic-has been proposed as a unifying solution to reduce packaging complexity for multi-state operators who currently need different packaging SKUs for each state. The lack of a single federal symbol means producers must maintain separate artwork for every market. Some states also mandate the symbol on each individual unit (pre-roll, gummy) inside the outer package, not just the outer retail container.

Child-resistant packaging (CR packaging) is packaging designed and tested to prevent children under 5 years old from accessing hazardous contents within a specified time period while remaining openable by adults. The CPSC defines CR packaging under 16 CFR 1700.20, which requires a testing protocol of 200 children aged 42-51 months attempting to open the package. Before any demonstration, 85% must fail within 10 minutes. After a visual demonstration, 80% must still fail within 5 additional minutes. Simultaneously, 90% of 100 adults aged 50-70 must successfully open and reclose the package within 5 minutes. CR packaging is required for all cannabis products in every US legal market and all Canadian cannabis products. Common CR mechanisms include squeeze-and-pull pop-top bottles, pinch-and-slide CR zippers, push-and-turn caps, and slider-and-track pouches. CR packaging does not guarantee a child cannot eventually open the package-it means the time and dexterity required exceed what most children under 5 can achieve. The Poison Prevention Packaging Act of 1970 established the original CR requirement, and it's been extended to cannabis through state regulations.

Tamper-evident packaging is packaging designed to provide visible, irreversible indication that a product has been accessed or interfered with after the manufacturer's seal was applied. The FDA defines tamper-evident requirements under 21 CFR 211.132, originally enacted after the 1982 Tylenol poisoning incidents. The key distinction from tamper-proof packaging (a misnomer, since no package is truly impenetrable) is that tamper-evident doesn't prevent tampering-it makes it obvious. Common tamper-evident features include shrink bands around bottle caps that must be torn, breakaway tamper rings on screw caps that separate upon first opening, foil induction seals on bottle mouths, VOID labels that leave the word "VOID" permanently on the surface when removed, and perforated tear strips on pouches. In cannabis, most state regulations require tamper-evident packaging for all flower and concentrate products. California's Bureau of Cannabis Control (now DCC), Colorado's Marijuana Enforcement Division, and Oregon's OLCC all mandate tamper-evident features. Tamper-evident shrink bands cost $0.01-0.03 per unit and are the most common solution for pop-top bottles.

A doob tube (also called a pre-roll tube or joint tube) is a cylindrical container designed to hold and protect a single pre-rolled cannabis joint or blunt. Doob tubes are typically manufactured from polypropylene (PP), though glass and paper-based options exist for premium or eco-conscious brands. Standard lengths range from 76mm (mini joints) to 116mm (king-size and blunt tubes), with internal diameters of 16-19mm to accommodate different pre-roll gauges. Wall thickness typically runs 0.8-1.2mm for PP tubes. Most doob tubes feature a child-resistant push-and-turn or squeeze-and-pop cap that meets ASTM D3475 and 16 CFR 1700.20 requirements. Glass tubes use cork-style or screw-top lids and are popular for premium pre-rolls retailing above $15. Paper tube options use recycled kraft board with a foil-lined interior for barrier protection. Doob tubes cost $0.05-0.15 per unit wholesale for plastic, $0.20-0.40 for glass, and $0.15-0.30 for paper. They prevent joint damage during transport, maintain freshness for 3-6 months, and satisfy child-resistant requirements at the individual-unit level required by many states.

A dram (dr) is a unit of volume used in cannabis packaging to denote the capacity of pop-top pill bottles. Originally an apothecary unit equal to 1/8 fluid ounce or 3.6967 ml, the cannabis industry uses it as a sizing standard for HDPE pop-top containers. Common sizes include 13dr (holds approximately 1/8 oz or 3.5g of flower), 16dr (holds approximately 1/4 oz or 7g), and 19dr (holds approximately 1/2 oz or 14g). The actual internal volume of a 13dr bottle is roughly 48ml, 16dr is approximately 60ml, and 19dr runs about 70ml. The sizing is nominal-actual flower capacity depends on grind fineness and density, with fluffy hand-trimmed flower requiring more volume than densely packed machine-trimmed product. Pop-top bottles are available from 8dr (holds about 1 gram) up to 30dr (holds about 1 oz), with 13dr, 16dr, and 19dr being the most common dispensary sizes. Wall thickness scales with size: 13dr bottles use 0.8-1.0mm HDPE, while 19dr and larger step up to 1.2-1.5mm for structural integrity.

An exit bag is a child-resistant, opaque container provided at the point of sale to transport cannabis products from the dispensary to the consumer's destination. Exit bags are required in many legal cannabis markets-including California, Colorado, Oregon, and Washington-because individual product packaging must be placed inside a CR container at the time of retail sale. The bag must be opaque (not transparent or translucent) to prevent visibility of contents during transport. Typical exit bags use a multi-layer laminate with a CR zipper closure certified under 16 CFR 1700.20 and ASTM D3475. Materials often include a kraft paper exterior (60-80 gsm) laminated to an aluminum foil barrier and LLDPE inner layer, providing both child resistance and odor containment. Exit bags cost $0.10-0.25 per unit wholesale and are typically branded with the dispensary's logo, as they serve as the final consumer touchpoint. Some dispensaries use reusable exit bags with rigid plastic construction that customers bring back on subsequent visits, reducing waste. Regulations vary by state: California requires opaque CR exit packaging for all cannabis sales, while some states allow the product's own CR packaging to suffice.

A stand-up pouch (SUP) is a flexible packaging format with a flat bottom gusset that allows the bag to stand upright on retail shelves, maximizing display face visibility. The construction uses a bottom gusset (W-fold or K-seal) that unfolds when filled, creating a stable base. The front display panel typically measures 80-150mm wide by 120-200mm tall for cannabis applications, providing ample real estate for branding and regulatory information. Stand-up pouches are the dominant format for cannabis flower packaging because they offer the largest printable surface area of any child-resistant format. Construction is usually PET/AL/LLDPE laminate (100-150 microns total) with a CR zipper closure at the top and a tear notch for initial opening. Common sizes include 3.5g bags (100mm × 150mm), 7g (120mm × 180mm), 14g (140mm × 200mm), and 28g/1oz (160mm × 230mm). SUPs can be manufactured with a hang hole (Euro or round) for pegboard display. Production minimums for custom-printed stand-up pouches typically run 5,000-10,000 units, with rotogravure printing requiring 10,000+ for cost efficiency.

A pre-roll box is a rigid or semi-rigid carton designed to hold one or more pre-rolled cannabis joints in individual doob tubes or direct-seated cavities. Common formats include cigarette-style flip-top boxes (similar to a cigarette pack), slider boxes (an inner tray slides out of an outer sleeve), and multipack configurations holding 2, 3, 5, or 7 pre-rolls. Construction typically uses 250-350 gsm SBS (solid bleached sulfate) paperboard or kraft board with a foil or plastic interior liner for barrier protection. Dimensions vary: a single pre-roll flip-top box runs approximately 70mm × 25mm × 80mm; a 5-pack slider box measures 110mm × 60mm × 25mm. Pre-roll boxes are not inherently child-resistant and must be paired with CR exit packaging at retail or feature a CR mechanism built into the box design-such as a squeeze-and-pull tab or a two-handed opening sequence certified under ASTM D3475. Printing options include offset lithography for full-color graphics, foil stamping for premium shelf presence, and spot UV for tactile contrast. Wholesale costs range from $0.15 for basic single-units to $0.80 for complex multipacks with CR features.

A concentrate jar is a small, wide-mouth container designed to hold cannabis concentrates including wax, shatter, live resin, rosin, and badder. Common sizes include 5ml (holds 1-2g concentrate), 9ml (holds 3-5g), and 15ml (holds 5-7g). Material options include borosilicate glass for premium thermal resistance (withstands 165°C temperature differentials), soda-lime glass for economy (9 × 10⁻⁶/K expansion coefficient), and polypropylene plastic for cost-sensitive applications. Wall thickness runs 1.5-2.5mm for glass and 0.8-1.2mm for PP. Premium concentrate jars feature non-stick PTFE (Teflon) or FEP (fluorinated ethylene propylene) coatings on the interior surface, which prevent sticky concentrates from adhering to the glass and allow consumers to recover 100% of the product. Non-stick jars cost $0.80-2.50 per unit wholesale, compared to $0.30-0.80 for standard glass. Lids are typically polypropylene screw-top closures with a heat-sealed foil liner for tamper evidence. Child-resistant lid options that meet 16 CFR 1700.20 are available but add $0.10-0.20 per jar. Concentrate jars are sold with or without custom printing-pad printing, silk screening, and shrink sleeves are the primary decoration methods.

Flexographic printing (flexo) is a rotary printing process that uses flexible photopolymer relief plates to transfer ink onto flexible packaging substrates. Each color station uses a plate cylinder wrapped with a laser-engraved photopolymer plate (typically 1.14-1.70mm thick) that picks up fast-drying liquid ink from an anilox roll (a metering cylinder with 200-600 cells per linear inch) and applies it directly to the film. Flexo supports up to 8-10 colors per pass using solvent-based, water-based, or UV-curable inks. For cannabis packaging, flexo is the go-to for high-volume runs of 10,000+ units because plate costs are low ($50-200 per color) and running speeds reach 100-300 meters per minute. Image quality is adequate for bold graphics and text but falls short of photographic detail-the line screen tops out at 85-133 lpi (lines per inch). Flexo is used for stand-up pouches, flat bags, and shrink sleeves. Setup waste runs 50-200 meters per job, making it uneconomical for small runs. Water-based inks are FDA-compliant for food-contact applications under 21 CFR 178.3297.

Rotogravure printing (gravure) is an intaglio rotary printing process that uses engraved copper cylinders to transfer ink directly onto packaging film. Each color station uses a steel cylinder electroplated with copper and laser-engraved with thousands of microscopic cells (typically 100-200 cells per cm) that hold ink. The cylinder rotates through an ink fountain, a doctor blade scrapes excess ink from the non-engraved surface, and the remaining ink in the cells transfers to the substrate under 20-50 N of nip pressure. Gravure delivers the highest print quality of any flexible packaging process-line screens reach 150-200 lpi with exceptional color consistency and density-making it ideal for photographic images, gradients, and metallic effects on cannabis packaging. The downside is cost: copper cylinders run $300-1,000 per color, and a 10-color job requires $3,000-10,000 in cylinders before printing begins. Gravure becomes cost-competitive at 25,000+ units and is the standard for national-brand cannabis companies running 100,000+ unit orders. Solvent-based inks are dominant, providing excellent adhesion to PET, foil, and LLDPE substrates. Press speeds reach 200-400 meters per minute.

A matte finish is a non-reflective surface treatment applied to cannabis packaging that eliminates glare and creates a soft, tactile feel. It's achieved either by using a matte BOPET outer layer in the film lamination (which has a microscopically rough surface that scatters light rather than reflecting it) or by applying a matte varnish or laminate coating over printed graphics. The visual effect is a flat, understated appearance that photography stores and premium cannabis brands favor because it signals sophistication and quality. Reflectance values for matte finishes measure 20-40 gloss units at 60°, compared to 80-100+ for gloss finishes. The trade-off is practical: matte surfaces show fingerprints and smudges more readily than gloss, which can be a drawback for handling-intensive dispensary retail. Matte finishes also reduce perceived color vibrancy by 10-15% because scattered light reduces chroma intensity. In PET/AL/LLDPE constructions, adding a matte outer layer costs $0.01-0.02 per bag additional. Many premium brands combine matte with spot UV-applying selective gloss varnish to specific design elements-to create visual contrast between flat and shiny areas on the same package.

A holographic finish is a specialty surface treatment that creates a color-shifting, iridescent visual effect on cannabis packaging by diffracting light into its component wavelengths. It's achieved by laminating a holographic film (typically 12-23 micron BOPET with a micro-embossed grating pattern at 1,000-3,000 lines per mm) onto the outer layer of a pouch or by applying holographic cold foil during printing. The diffraction pattern splits white light into rainbow spectra that shift as the viewing angle changes, creating a dynamic, eye-catching shelf presence. Holographic finishes add $0.02-0.05 per unit to packaging costs, making them a premium option used primarily for limited-edition releases, holiday products, or brands competing for dispensary shelf attention. The functional benefit beyond aesthetics is anti-counterfeiting: holographic patterns are extremely difficult to reproduce without the original master shim, making them a tamper-evident and authenticity-verification feature. Common holographic patterns include rainbow, silver holographic, and custom-brand holograms with embedded logos. The finish is typically combined with matte or spot UV elements to prevent visual overload, as full-surface holographics can overwhelm the design and reduce text legibility.

Spot UV is a selective printing technique that applies an ultraviolet-cured clear varnish to specific areas of a package surface, creating high-gloss contrast against a matte or uncoated background. The process uses a photopolymer plate (similar to flexographic plates) to apply UV-curable liquid varnish only where the design calls for gloss, then passes the film under a UV lamp (200-400 nm wavelength) that cures the varnish instantly into a hard, glassy coating. The effect creates visual contrast: matte areas absorb and scatter light (20-40 gloss units) while spot UV areas reflect it sharply (90+ gloss units), drawing the eye to selected design elements like logos, product names, or accent graphics. On cannabis packaging, spot UV is typically applied to PET outer layers before lamination, ensuring the effect survives the heat-sealing process. It adds $0.01-0.03 per unit and is often paired with matte finishes for maximum contrast. The tactile difference is also significant: spot UV creates a raised, smooth texture against the flat matte surface, adding a physical dimension that consumers can feel. Spot UV requires precise registration-misalignment of more than 0.5mm is visible to the naked eye.

Pantone matching is the use of the Pantone Matching System (PMS) to achieve precise, reproducible color consistency across packaging production runs. Each Pantone color is identified by a unique number (e.g., Pantone 185 C for a specific red) and corresponds to a specific ink formulation-a recipe of base pigments (usually 8-14 base colors) mixed in defined ratios to produce the target hue. In cannabis packaging, Pantone matching is critical for brand consistency: a company's logo red must look identical across 10,000 stand-up pouches printed in different facilities or at different times. Process printing (CMYK) can approximate many Pantone colors but cannot match metallic, fluorescent, or highly saturated hues, which require dedicated spot color inks mixed to Pantone specifications. Flexographic and rotogravure presses apply Pantone inks as spot colors on dedicated color stations. The Pantone Solid Coated guide is the standard reference for flexible packaging, measured under D50 lighting. Color matching tolerances are typically specified at Delta E ≤ 2.0 (perceptible difference) for acceptable production, with tight-brand clients requiring Delta E ≤ 1.0. Custom Pantone inks add $50-150 per color per production run in setup and formulation costs.

Cold foil stamping is a printing process that applies a thin metallic foil to packaging surfaces using UV-curable adhesive rather than heat and pressure (as in traditional hot foil stamping). The process works inline on flexographic or offset presses: a UV-curable adhesive is printed onto the substrate in the desired pattern, a metallic foil roll (typically 12-16 micron PET carrier with a 200-400 angstrom aluminum layer) is pressed against the wet adhesive, and a UV lamp cures the adhesive instantly, bonding the foil to the substrate. The carrier film is then peeled away, leaving the metallic finish only where the adhesive was applied. Cold foil enables metallic effects on areas too large or complex for hot foil dies-full-panel metallic backgrounds, fine text, and gradient transitions are all achievable. It costs 30-50% less than hot foil stamping because it eliminates custom brass or magnesium dies ($200-1,000 each) and runs at press speed rather than the slower speeds required for heated die stamping. The trade-off is brilliance: cold foil typically achieves 70-80% of the reflectivity and metallic pop of hot foil, making it suitable for most cannabis packaging applications but not for ultra-premium luxury brands requiring maximum metallic impact.