Kraft Mylar bags are flexible bags with a kraft-facing outer layer and an inner film stack, meaning the layers that make up the flexible barrier, selected for the product. The kraft layer sets the visual and print ground. The barrier layers affect resistance to light, moisture, and odor transfer, while seals and closures control how the bag opens and closes.
Start with custom tin tie kraft bags for a kraft-forward closure comparison. Then compare custom printed Mylar bags and custom plastic Mylar bags when the print surface or flexible film needs a different direction.
Does kraft make a Mylar bag moisture resistant?
No. Kraft describes the facing or finish, not the complete barrier. A barrier layer is a film layer that slows the passage of a material such as light, moisture, or odor. A metallized film layer can block light and slow moisture and odor transfer, but the selected film stack, seals, closure, and use case must appear in the quote. Do not infer bag performance from the brown color or paper-like texture.
| Construction part | What it changes | What to request |
|---|---|---|
| Kraft-facing layer | Exterior appearance and print ground | Facing material and artwork treatment |
| Barrier layers | Light, moisture, and odor direction | Layer description in the quote |
| Closure and seal | Opening, resealing, and seal area | Closure type and finished seal position |
| Bag shape | Usable fill space and display position | Flat or finished dimensions |
Which barrier layers can a kraft Mylar bag use?
The quoted film stack determines the barrier direction. A kraft-facing bag can use a flexible construction with more than one layer, and each layer has a job in the finished package. Ask CPL to name the kraft-facing material, inner film, metallized layer if selected, seal area, and closure separately. That written breakdown prevents the outer look from being mistaken for the inner barrier.
Which kraft Mylar bag shape fits the product?
Choose the bag shape from the fill process, product envelope, display plan, and opening behavior. A flat bag uses a compact footprint. A gusseted or stand-up bag creates more depth for filling and display. A die-cut or irregular shape changes the seal line and usable fill area, so confirm whether the quoted dimensions are flat or finished. Compare large Mylar bags, irregular shape Mylar bags, and die-cut Mylar bags when the product does not fit a standard flat outline.
How does kraft affect printing on the bag?
Kraft changes the color ground behind the artwork. Dark ink can read differently on a kraft surface than on a white surface, and a white underprint can change how the colors sit. The proof should show the front, back, gusset, seal area, zipper or tear feature, and window if one is part of the design. Keep type and artwork clear of the seal and tear path.
For a barrier-focused comparison, check Mylar bags for freeze drying. For an odor-focused format, compare custom smell proof Mylar bags. Neither product name makes a promise about a kraft finish, so keep the final language tied to the quoted material stack and closure.
Ask us about food-contact options for food applications. A finish name does not replace a material quote and proof.
What should a kraft Mylar bag quote include?
Send the filled product envelope, desired shape, closure, kraft-facing direction, barrier layers, artwork, finish, quantity, and destination. State whether the bag must stand, hang, lie flat, or fit inside another package. CPL custom orders use a 100-unit MOQ. Pricing is from $0.49 per unit at volume, quoted to spec. Production is typically 8 to 10 business days after proof approval, plus delivery.
Free design support and free US shipping are available. Use wholesale custom packaging when the order needs broader quantity planning. The $19.99 sample kit helps compare kraft-facing materials, print appearance, and flexible package structures before proof approval, and its price is credited toward the first order.
Frequently Asked Questions
Is a kraft Mylar bag paper or plastic?
A kraft Mylar bag is a flexible bag with a kraft-facing outer layer and a film-based inner construction. Kraft controls the outside look and print ground, while the selected film layers, seals, and closure control the package behavior. Ask CPL to name both the facing material and barrier layers in the quote.
Does a kraft finish block moisture?
No. A kraft finish does not define the full moisture barrier. The selected film stack, metallized layer if used, seals, and closure determine the barrier direction. Ask CPL to identify those layers and contact points. For food applications, ask us about food-contact options rather than inferring suitability from the kraft appearance.
How do I choose the right kraft Mylar bag shape?
Choose the shape from the product envelope, fill process, display position, and opening behavior. Flat, gusseted, stand-up, die-cut, and irregular bags use space differently. Confirm whether the quoted size is flat or finished, then check usable fill space and seal clearance in the proof before approving artwork.
Food applications should prompt the question about food-contact options.
What do I need for a kraft Mylar bag quote?
A kraft Mylar bag quote needs the product envelope, bag shape, closure, facing material, barrier layers, artwork, finish, quantity, and destination. Custom orders use a 100-unit MOQ. Pricing is from $0.49 per unit at volume, quoted to spec, and production is typically 8 to 10 business days after proof approval, plus delivery.
