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HomeCustom Mylar BagsMylar Comic Bags

Mylar Comic Bags.

Archival polyester — chemically stable, so the bag does nothing to the book over decades.

🏷 Key Specs
📦 500 min. order 15–20 business days lead time📐 Standard sizes
✨ Finishes
MatteGlossMetallic
▤ Materials
Mylar (BoPET)LDPE Inner LayerKraft PaperZip-Lock Seal
☑ Features
Resealable zipperTear notchFood-grade materialFree design help
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Your custom box, quoted.

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§ 01
500+
Brands Served
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§ 02
15–20 business days
Day Standard Lead
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§ 03
Free
Design Support
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§ 04
Standard comic sizes
Size & Dimensions
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USA Wide
Free Delivery
The Atelier Book

The full specification book.

Six chapters. Six colours. Click a tab to turn the page.

Description
Overview

Mylar Comic Bags

Archival polyester — chemically stable, so the bag does nothing to the book over decades.

Here mylar means what it originally meant: polyester film free of the plasticisers and acids that migrate out of cheaper sleeves. That distinction is the entire purchase decision.

500
Min. order
15–20 business days
Lead time
Standard comic sizes
Dimensions
Mylar Comic Bags
Matte · Gloss · Metallic
Crafted to specification

Every detail. Intentional.

Chemically stable film

No yellowing, embrittling or off-gassing.

Not PP or PVC

Cheaper sleeves migrate into the paper.

Sized by era

Current, Silver, Golden and magazine trims differ.

2 mil or 4 mil

General storage, or long-term archiving.

Boards do the bending work

The sleeve alone will not stop a flex.

Acid-free throughout

Including whatever sits behind the book.

brand
No. 04 — Construction detail
Technical Specs

Built like architecture.

Each Mylar Comic Bags is an engineered object — measured, dieline-cut, and hand-wrapped to spec. Below: the standard build sheet.

Material
Archival polyester (true PET)
Not PP or PVC
Current / Modern
Approx. 6⅞" × 10½"
Modern trim
Silver Age
Approx. 7" × 10½"
Mid-era books
Golden Age
Approx. 7¾" × 10½"
Larger early trim
Magazine
Approx. 8" × 10½"
Magazine format
Thickness
2 mil general · 4 mil archival
4 mil is stiffer
Acid Content
Acid-free, no plasticisers
The whole point
Used With
Acid-free backing board
Stops bending

✦ Need a custom spec? Talk to our atelier — every detail is negotiable.

The Library

Every surface, hand-selected.

What this product is built from, and the surfaces it takes. Below the build sheet, the full swatch library — every option applies across our range, and a physical swatch set is available on request.

Material
Archival PET Film
Chemically stable polyester. Does not yellow, embrittle or off-gas onto paper over decades of storage.
The standard
2 Mil Gauge
General collection storage. Clear and flexible, and the sensible choice for volume bagging.
Everyday
4 Mil Gauge
Long-term archiving. Stiffer, holds its shape in a box, better for key issues.
High value
Acid-Free Backing Board
Rigid board behind the book. The sleeve alone will not stop bending — this is what does.
Recommended pairing
Resealable Flap
Fold-over flap with an adhesive strip, keeping dust out without taping the book itself.
Optional
Finish
Optically Clear
The default. The cover has to be readable through the sleeve without haze.
Standard
Fold-Over Flap
Extra material folding over the opening to keep dust and light out.
Most common
Resealable Strip
Adhesive on the flap, not on the book. Opens and closes without residue.
Practical
Unsealed Open Top
Plain sleeve with no flap. Cheapest and fastest for high-volume bagging.
Volume work
Printed Retailer Mark
Small logo or shop name printed on the sleeve edge.
Dealers
UV-Filtering Film
Reduces light exposure for books stored or displayed in daylight.
Display use
01 · Base Stock

Material

The board and paper your box is built from.

FINISH
Clear PETPE Film
FINISH
White PETPE Film
FINISH
Metallized PET Film
FINISH
Kraft Foil Laminate
FINISH
Aluminium Foil Laminate
FINISH
BOPPPE Film
FINISH
Recyclable Mono PE Film
FINISH
PCR Film
FINISH
High Barrier Film
FINISH
Puncture Resistant Film
FINISH
Freezer Safe Film
FINISH
Retort Film
02 · Surface

Finishes

How the outer surface looks, feels, and catches light.

FINISH
Matte Finish
FINISH
Gloss Finish
FINISH
Soft Touch Matte
FINISH
Metallized Finish
FINISH
Holographic Film
FINISH
Registered Spot Gloss
FINISH
Spot Matte
FINISH
Tactile Varnish
FINISH
Pearlescent Effect
FINISH
White Ink Printing
FINISH
Transparent Window
FINISH
Frosted Window
03 · Extras

Add-ons

Closures, linings, and hardware that complete the build.

FINISH
Child Resistant Zipper
FINISH
Press to Close Zipper
FINISH
Slider Zipper
FINISH
Tear Notch
FINISH
Laser Score
FINISH
Spout and Cap
FINISH
Degassing Valve
FINISH
Round Hang Hole
FINISH
Euro Hang Hole
FINISH
Carry Handle
FINISH
Rounded Corners
FINISH
Bottom Gusset
FINISH
Side Gussets
FINISH
K Seal Bottom
FINISH
Plow Bottom
FINISH
Tamper Evident Seal
Mylar (BoPET)LDPE Inner LayerKraft PaperZip-Lock SealMatteGlossMetallic

✦ Mix and match across all three — we'll build your exact combination.

What We Make

The full kit of capabilities.

Archival PET Film
True polyester, acid-free and free of migrating plasticisers.
Era-Standard Sizes
Current, Silver Age, Golden Age and Magazine dimensions.
2 Mil and 4 Mil
General storage and long-term archival gauges.
Fold-Over Flap
Keeps dust and light out of the opening.
Resealable Adhesive Strip
Adhesive on the sleeve, never in contact with the book.
Custom Dimensions
Non-standard sizes for magazines, prints, cards and artwork.
Backing Boards
Acid-free boards sized to match each sleeve format.
Retailer Print
Small shop mark printed on the sleeve.
Bulk Packs
Supplied in dealer quantities for high-volume bagging.
PVC Sleeves
We do not supply PVC for archival use. It off-gasses and will damage paper over time — the opposite of what this product is for.
Barrier or Food Use
These are storage sleeves, not barrier packaging. No moisture or oxygen protection is implied.
Heat SealZip-Lock ClosureCustom PrintSmell-ProofTear NotchCMYK Printing
Measure Twice

Sizing & dieline.

Every Mylar Comic Bags is made to your fill, not pulled off a shelf. A pouch is quoted width × length — tell us what goes inside and how much of it, and we return a measured spec, free, before you commit to anything.

Size Range
Standard comic sizes
Custom dieline
Stock Dimensions
Current 6⅞ × 10½ in · Silver 7 × 10½ in · Golden 7¾ × 10½ in
W × L
Print Layout
Flat bag template, free with every quote
AI / PDF
Artwork Setup
Free structural design
Included
Tolerance
±2 mm on bag width
Industry standard
How to measure
01
Start with the fill

A pouch is sized by what goes in it, not by outside dimensions. Give us the fill weight and, if you can, the bulk — 500 g of granola needs far more bag than 500 g of powder.

02
Width and length

We quote width × length. Flat pouches need no gusset figure — the bag lies flat when empty.

03
Say what it must do

Zipper or heat seal only, valve or no valve, window or full barrier. These change the film and the bag height, so they belong in the spec rather than added afterwards.

Available constructions
Flat SleeveArchival PETResealable FlapCurrent SizeGolden Age

✦ Not sure of your size? Send us the product — we measure it and build the dieline.

What It Costs

Pricing & minimums.

Mylar Comic Bags is priced per specification rather than from a fixed list — the same box in two different finishes can land at very different numbers. Below is what actually moves the price, so you can shape the spec before you request a quote.

Minimum Order
500 units
Lower MOQ on request
Maximum Run
100,000 units
Larger volumes quoted
Standard Lead Time
15–20 business days
After artwork approval
Rush Lead Time
10–12 days
Surcharge applies
Pricing Model
Quote-based, per specification
USD
Design & Dieline
Free — included in every quote
No setup fee
Sampling
Physical sample before bulk
Credited on order
What moves the price
Quantity

The single biggest lever. Unit cost falls sharply as volume rises, because setup and tooling spread across more pieces.

Material and thickness

Board weight and stock choice change both the raw material cost and the shipping weight of the finished run.

Finishing

Foil, spot UV, embossing and soft-touch each add a pass on press. One or two lift the box; five compound the cost.

Print coverage

Full-bleed print inside and out costs more than a one-sided design on natural stock.

Inserts and hardware

Foam, moulded pulp, velvet pillows, magnets and ribbon are priced per piece on top of the box itself.

Timeline

Standard production is the base rate. Rush moves you up the production queue and carries a surcharge.

✦ Quotes returned within 24 hours — no obligation, no account required.

Client Voices

What brands say.

The best packaging partner we've ever worked with. Every box feels like an event.
Sarah M.
Head of Brand · Luxe Cosmetics
Our unboxing experience went from forgettable to remarkable. The magnetic close is chef's kiss.
James L.
Founder · Apex Spirits
Fast turnaround, flawless quality, and the design support is genuinely exceptional.
Priya K.
Creative Director · Kalon Jewelry
— Frequently Asked Questions —

Questions, answered.

Everything you need to know about Mylar Comic Bags.

Mylar (BoPET) film provides oxygen, moisture, and UV barrier performance significantly superior to standard poly bags. The multi-layer construction combines different film types for optimal barrier balance. For products where shelf life and potency preservation are critical — specialty food, cannabis, supplements, botanicals — the performance difference between mylar and standard packaging is directly measurable in product quality over time.
Heat sealing creates an airtight, permanent seal across the bag opening. Impulse heat sealers are the standard for small-to-mid volume operations. For maximum shelf life on dry products, combining heat sealing with oxygen absorbers removes residual oxygen inside the bag. Resealable zipper versions use press-to-close mechanisms for products used across multiple sessions.
Yes — food-contact mylar films meet FDA food contact material standards. Inks used in food-compliant mylar printing are food-safe. For products where food safety documentation is required by retail buyers or regulatory compliance, PackTist can provide food contact compliance certifications for the materials used.
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