Custom Paper Bag Artwork: A Print File and Proof Approval Checklist

When commissioning custom paper bags from a manufacturer, the precision of the design files directly determines the final quality and appearance of the finished product. Typically, the process begins by confirming the dieline with the supplier, followed by specifying the colors for each printed surface and any required post-printing finishing processes. Finally, a physical sample (prototype) must be reviewed against the written specifications.

If you have only provided a logo file to the manufacturer, this is insufficient for production.So，before finalizing the order, you must supply comprehensive details—including the exact dimensions of the paper bag, color specifications, logo printing techniques, paper material, handle specifications (material, length, and attachment method), and more. The supplier will then assist in completing the design and provide a proof, which serves as the benchmark for mass production.

This guide is designed for brands, retailers, and importers looking to order custom-printed shopping or promotional bags. It provides a practical checklist for reviewing design files and samples, helping you identify issues—such as layout errors or misaligned logos—before production begins. By using this checklist, you can make necessary adjustments and ensure both parties are in complete agreement on the final design before manufacturing commences.

Start with the bag specification, not the artwork canvas

Confirm the finished dimensions and their order before designing. State whether measurements describe the finished bag and identify the front panel, gusset and body height. Include the intended contents, packed weight, paper preference, handle construction and any top or bottom reinforcement. These choices influence where printed elements can be seen and how the finished bag is used.

Request the supplier’s current structural template for that exact specification. A template from a previous size, a different handle arrangement or another manufacturer should not be assumed interchangeable. Ask the supplier to identify the template revision, scale, cut lines, folds and any areas reserved for gluing or construction.

Browse the advertising paper bag range to identify a relevant starting format. Then separate the reference appearance from the dimensions and construction actually being quoted. An attractive product photograph cannot substitute for a dimensioned production template.

Make the artwork handoff complete

Send the production artwork together with a simple viewing PDF and a short specification sheet. Name files with the project, size or SKU and revision. Avoid a folder containing several files called “final” with no indication of which one replaces the others.

Ask which editable and output file formats the supplier needs. Jialan’s artwork and design assistance FAQ describes support for client artwork and design development. Confirm the scope and any charges for your project rather than assuming that a file review includes unlimited redesign or custom sampling.

Review folds, seams and handle areas in the assembled view

A flat artwork file can look balanced while the assembled bag looks different. Review how each panel faces the customer when the bag is open, folded and carried. Check that the logo is not unintentionally interrupted by a gusset fold, hidden by a handle or positioned too close to the top turn-in.

Keep important wording and fine details away from critical construction areas using the supplier’s specified margins. Ask for the required bleed and safe-area guidance for the actual template. Do not impose a generic measurement taken from a business-card template on a paper bag with different converting requirements.

If a pattern continues across adjacent panels, ask how the intended alignment will be controlled and what variation is acceptable. Avoid treating a digital mockup as a guarantee of perfect alignment at every seam. For artwork that depends on precise registration, discuss feasibility before approving the design direction.

Agree color references and the paper together

Define whether the design uses process printing, specified spot colors or another agreed method. State the paper grade, surface and finish beside the color reference. A reference approved on one substrate does not automatically establish the appearance on another.

Use screen previews to discuss layout, but agree a suitable physical reference where color is important. Ask what the proof can represent and what it cannot. A paper change or finishing change can justify another review even when the artwork file has not changed.

Avoid an instruction such as “match the website exactly” without a controlled reference. The supplier needs to know which reference governs the order and under what agreed viewing conditions the comparison will be made. If your brand uses defined acceptance criteria, provide them before sampling rather than introducing them after production.

Identify special finishes as separate production decisions

Foil, embossing, debossing, spot coatings and other decorative processes should be identified separately from the ordinary printed artwork. Make the intended areas unambiguous and ask how the supplier wants those elements named or supplied. Do not rely on a metallic-looking screen color to communicate a foil requirement.

Confirm minimum practical detail, line treatment and registration requirements with the supplier for the selected process. Small reversed lettering, tightly spaced elements and decoration crossing folds deserve particular review. These are questions for prepress and sampling, not universal rules that can be resolved from a screenshot.

Overprint settings also need deliberate review. Adobe’s official overprinting guidance explains that overprint changes how overlapping inks behave and recommends consulting the print provider. Ask the supplier to check separations and unintended overprint rather than changing settings blindly to make a screen preview look correct.

Choose a proof that answers the right question

Different approvals answer different questions. A layout PDF is useful for wording and placement. A structural mockup can support a fit and construction review. A printed sample may demonstrate selected materials and decoration, but its authority depends on how it was made and how closely it represents production.

Ask whether the printed sample uses the intended paper and finishing processes. Record any differences, including substitute materials or simulated decoration. If a feature remains unproven, state the next check required before production release. This prevents the word “approved” from covering more than the buyer actually reviewed.

Use a written approval record

Record the artwork filename, revision, dieline revision, sample identifier and approval date. List outstanding corrections in one place. Make clear whether the buyer is approving layout only, approving a sample subject to changes, or releasing the complete agreed specification for production.

A conditional approval should identify how the conditions will be closed. If the logo is moved, the wording corrected or the finish changed, issue a revised proof and record its acceptance. Do not assume that “please make the changes and proceed” establishes a clear visual reference for every affected detail.

For a collection, control approvals per size and design. Artwork should not be resized automatically without checking legibility, fold positions and logo placement on each template. Keep a matrix showing which combinations are approved and which remain open.

Control changes after approval

A change after approval may affect printing, decoration tools, material ordering or the production schedule. Request the impact before authorizing it. Ask the supplier to withdraw superseded files from the active job and identify the revised version in the order record.

For repeat orders, confirm that the original material, structure and finishing remain available. An unchanged logo does not make a new paper or handle arrangement equivalent. Use the previous approved reference as a starting point, then document any agreed differences.

Sample approval and final inspection have different roles. The approved artwork and sample define the target; the pre-shipment paper bag inspection checks the identified production goods against that target. Keep both records linked to the purchase order.

Frequently asked questions

Can I start with only a logo?

Yes, a logo can start the discussion, but the production brief still needs bag dimensions, materials, printed surfaces and layout. Confirm what design support is included and approve the completed artwork before printing.

Should I use the same artwork file for every size?

Use the correct template for each size. A shared design can be adapted, but its placement, text size and relationship to folds and handles should be reviewed separately.

Does approving a PDF approve the final print color?

Only if that is explicitly the agreed approval scope and reference method. For color-sensitive work, discuss an appropriate physical reference and record what the proof represents.

How much bleed should I add?

Use the supplier’s requirement for the specific dieline and process. Confirm bleed, safe areas and construction zones rather than applying one generic allowance to every bag.

Can I change the design after sampling?

Request a revised quotation or schedule where needed, and approve the affected features again. Identify the new revision clearly so the earlier sample is not mistaken for the final target.

What belongs in the approval email?

Include the order or project code, artwork and dieline revisions, sample reference, approved scope and any unresolved items. State whether production is released or a further proof is required.

Prepare your next printed paper bag project

Review Jialan Package’s customization service, then send your artwork brief with bag dimensions, intended contents and weight, quantity per design, paper and handle preferences, print and finish requirements, destination and required arrival date. Include existing artwork and identify which decisions need design support. Request project-specific sample costs, minimums and timing before approval.