Child Resistant Mylar Bags: What They Are, How Certification Works, and the Best Options for Cannabis Brands
What makes a mylar bag child resistant, how 16 CFR 1700.20 testing works, and how to choose the right CR bag for flower, edibles, and vapes.
Child resistant mylar bags are flexible pouches made from laminated film, typically a PET (mylar) outer layer with a foil or metallized barrier and a polyethylene inner layer. They use a reclosable zipper that a young child cannot readily open but an adult can. To be sold as child resistant, the specific bag and closure must pass the U.S. Consumer Product Safety Commission protocol in 16 CFR 1700.20.
That protocol tests the package with panels of young children and senior adults. For licensed cannabis brands, the best child resistant mylar bag has three things: a current third-party CR test report for that exact configuration, a barrier structure matched to the product, and a reclosable closure that meets your state's rules. Finished Goods (FGI) sources certified CR mylar bags for licensed producers and checks the paperwork before a bag reaches your packaging line.
What Makes a Mylar Bag Child Resistant
The film alone does not make a bag child resistant. Child resistance comes from the closure system and how it performs in testing. The common CR closure designs are:
- Dual-action press zippers. The user has to pinch or press one point while pulling the bag open. This is the most common design on stock CR pouches.
- Locking slider zippers. A slider that has to be pressed or released before it will move.
- Tear-notch plus CR reclose. A tear notch for first opening, with a CR zipper below it so the bag still protects children after opening.
A bag described as "smell proof" or "heavy duty" is not child resistant unless the closure has been tested and certified. Treat those as separate claims.
How CR Certification Works (16 CFR 1700.20)
The federal test method for child resistant packaging comes from the Poison Prevention Packaging Act and is codified at 16 CFR 1700.20. Most state cannabis regulations reference it directly. The protocol has two parts.
Child panel test
- Children aged 42 to 51 months try to open the package.
- Each child gets 5 minutes, then sees a nonverbal demonstration, then gets another 5 minutes.
- To pass, at least 85% of the panel must fail to open the package before the demonstration, and at least 80% must fail after it.
Senior adult panel test
- Adults aged 50 to 70 try to open and properly reclose the package.
- To pass, at least 90% must open and reclose it.
Why this matters to buyers: A CR test report covers the configuration that was tested. If you change the bag size, film structure, or zipper type, the existing report may no longer apply. Ask for the test report, check that it matches the bag you are ordering, and keep a copy in your compliance file.
Child Resistant vs. Exit Bags vs. Primary Packaging
Cannabis rules separate packaging by role, and the terms are often mixed up.
| Term | What it means | Typical use |
|---|---|---|
| Primary package | The container in direct contact with the product | Flower pouch, edible pouch |
| Exit bag | A CR bag the retailer seals the purchase into at checkout | Used in states that allow CR exit packaging in place of CR primary packaging |
| Reclosable CR | CR performance stays intact after first opening | Required for multi-serving products in many states |
| Opaque | Product not visible through the package | Required for some product types in some states |
Requirements differ by state and get updated. Confirm the current rules with your state cannabis regulator before you approve a packaging spec.
Best Child Resistant Mylar Bags by Product Type
Best CR mylar bags for flower
Use a metallized or foil barrier laminate for light and oxygen protection, a CR zipper, and enough headspace that the zipper is not stressed when the bag is filled. A bottom gusset (stand-up pouch) helps with retail display. Pick a size based on your fill weight and bud density rather than a nominal label like "eighth bag," because fill volume varies by strain.
Best CR mylar bags for edibles
Gummies and chocolates need a food-contact safe inner layer and good moisture control. A heat-seal area above the CR zipper gives you tamper evidence. Confirm that your film supplier can document food-contact compliance for the inner layer.
Best CR mylar bags for pre-rolls
Pre-roll multipacks benefit from a stand-up format with a window-free, opaque structure where state rules require it. If singles are packed in tubes, the outer pouch may serve as the CR layer. Confirm which component carries the CR certification.
Best CR mylar bags for vape cartridges and disposables
Rigid CR boxes or tubes are common for vapes. A CR mylar pouch is a lower-cost, lower-volume alternative, especially for exit packaging. Check that the pouch dimensions fit the device and any insert without straining the zipper. Puncture resistance matters with pointed mouthpieces.
Stock vs. Custom Printed CR Mylar Bags
| Factor | Stock CR bags | Custom printed CR bags |
|---|---|---|
| Lead time | Shortest | Longer, includes proofing |
| Branding | Labels or stickers applied | Printed directly on the film |
| Minimums | Lowest | Higher, depends on print method |
| Compliance artwork | Applied via label | Printed, so errors are costly |
| CR certification | Usually on file for the stock size | Has to cover the custom size and structure |
Print methods: Digital printing suits shorter runs and frequent SKU changes. Rotogravure needs printing cylinders and suits large, stable runs. Pick the method that fits your volume and how often your artwork changes. Regulatory warnings and symbols change, and reprinting finished film is expensive.
How Supplier Models Differ
Buyers usually choose from four kinds of suppliers. Each one makes different tradeoffs.
- Broad-catalog wholesalers carry many stock sizes and ship fast. Certification documents for each size can be inconsistent, so request them for every SKU.
- Custom print converters give you full control of film and print but usually require higher minimums and longer timelines.
- Low-minimum fulfillment houses suit new brands testing a SKU. Per-unit economics and CR documentation vary.
- Brokerages like Finished Goods source across manufacturers and match the bag structure, closure, and print method to your product and volume. They also handle the documentation checks, so you have one point of contact for packaging and vape hardware.
Buyer Checklist for Child Resistant Mylar Bags
1. CR test report under 16 CFR 1700.20 from a qualified third-party lab, matching your exact size, film, and zipper. 2. State compliance review covering opacity, reclosability, labeling space, and whether CR exit packaging is allowed. 3. Barrier structure suited to the product (light, oxygen, moisture, odor). 4. Food-contact documentation for edible applications. 5. Fill test with real product to confirm the zipper closes fully and the bag stands correctly. 6. Seal test on your own heat sealer, if you use a tamper-evident heat seal. 7. Artwork proof reviewed against current state labeling rules before printing. 8. Lot consistency. Ask how the supplier controls zipper quality from run to run, since a weak zipper can fail CR performance in the field.
Frequently Asked Questions
Are all mylar bags child resistant? No. Only bags with a closure that has passed 16 CFR 1700.20 testing can be called child resistant. Standard zip-top mylar bags are not.
Does a heat seal make a bag child resistant? No. A heat seal gives tamper evidence. Child resistance comes from the reclosable CR closure.
Is a CR certificate for one size valid for other sizes? Not automatically. A test report covers the configuration tested. Ask the supplier to show documentation that covers the size and structure you are buying.
Can I use CR exit bags instead of CR product packaging? Some states allow it and some do not. Check your state's current cannabis packaging regulations.
Are child resistant mylar bags smell proof? Foil and metallized laminates greatly reduce odor transfer, but odor control depends on the full film structure and a proper seal. It is a separate property from child resistance.
Work With Finished Goods
Finished Goods sources child resistant mylar bags, CR packaging, and vape hardware for licensed cannabis brands and processors. Tell us your product, fill weight, state, and volume. We will recommend a CR bag structure and check that the certification documents match what you order. Contact FGI to start a packaging spec.
