Kraft Paper Flat-Bottom Bag

Reference photos from the ShinySunshine catalog show the kraft flat-bottom format, base and interior. Final laminate, dimensions, opening and optional valve are confirmed for your project.

Custom flexible packaging

Kraft Paper Flat-Bottom Bag

Model reference JX-KF-001

Custom kraft paper flat-bottom bags with a lined interior and resealable opening. Review dimensions, laminate and branding for your B2B quote.

Material options
Kraft paper / aluminium foil / PE — reference construction
Closure
Resealable zipper; opening and final seals confirmed per project
Finish
Brown kraft exterior; printing and surface finish specified per project
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Tell us about your product, quantities and destination. Final dimensions, materials and features are confirmed for your project.

About this bag

A kraft finish. A defined flat base.

JX-KF-001 combines a kraft paper exterior with a flat-bottom bag format. The base and folded side panels create a box-like shape, while the front, back and side surfaces provide room for your branding and product information. The reference photos show the bag from several angles, including the opened interior and base.

This is a kraft-specific configuration within the flat-bottom family, also commonly described as square-bottom bags or box pouches. Those names alone do not define different models. The material layers, dimensions, opening arrangement and final seals are what establish the specification for your project.

The original listing identifies a kraft paper / aluminium foil / PE laminate. Use that as a reference construction for discussion; the final layer structure and thickness are confirmed with the proposed bag specification. Tell us what you plan to pack, your target fill and how the bags will be filled and sealed.

Construction and features

The details behind the kraft appearance

  • Flat base and side panels. The box-like format provides depth and a defined base. Check the filled shape and stability using your actual product and proposed bag dimensions.
  • Kraft paper exterior. The brown paper appearance is part of this reference configuration. Confirm the paper, underlying laminate and surface finish together when reviewing the material specification.
  • Lined interior. The reference photos show the interior lining. Appearance alone does not establish barrier performance; review the actual layers against your contents and storage requirements.
  • Resealable opening. The reference includes a zipper opening. Confirm its position, opening method, filling access and final heat-seal arrangement for your packing process.
  • Branding across the panels. Plan artwork for the front, back, sides and base as required. Keep important text clear of folds, seals, opening features and any optional valve position.

Kraft bag specification

Start with the layers, size and opening

The model information below includes configurable options. Final dimensions, materials and features are confirmed in your project quote.

Dimensions
Custom width × height × depth; provide a labelled drawing
Capacity
Target fill weight or volume reviewed with your actual product
Material
Kraft paper / aluminium foil / PE — reference construction
Closure
Resealable zipper; opening and final seals confirmed per project
Printing and branding
Custom panel artwork; CMYK or Pantone colour requirements for review
Finish
Brown kraft exterior; printing and surface finish specified per project
Barrier options
Laminate reviewed against moisture, oxygen, light and storage requirements

Confirm width, height and depth

Provide the overall bag dimensions in millimetres and label the side depth or gusset on a drawing. Include the target fill weight or volume, product form and any limits for shelf space, carton packing or filling equipment. A weight alone does not establish a bag size because products have different bulk densities.

Specify the layers behind the kraft appearance

The source lists kraft paper, aluminium foil and PE as the reference laminate. Confirm the actual layers, layer gauges and sealing surface in the project specification. A kraft exterior does not by itself establish recyclability, food-contact suitability or a particular barrier level. Share the storage conditions, shelf-life target and documentation requirements for the destination market.

Check filling, sealing and opening together

Describe whether filling is manual or by machine, the intended filling opening and your sealing process. Allow for headspace, the zipper and any tear-opening feature. If a degassing valve is required, review its position alongside the artwork and product requirements. Use an appropriate sample to assess fit, opening access and seal compatibility before agreeing the final production specification.

Customization

Shape the bag around your product

  • Size and target fill. Share width × height × depth in millimetres, or describe the product and target fill. A labelled drawing and a filled sample help confirm usable space.
  • Laminate and gauge. Review the kraft paper, foil and inner sealant layers, or another proposed construction, for the contents, storage conditions and handling requirements.
  • Zipper and opening. Discuss the reclosure style, position and tear-opening arrangement. Confirm where the bag will be filled and which seals are completed during packing.
  • Artwork and finish. Provide your design files, artwork versions and CMYK or Pantone colour requirements. Confirm the print coverage and desired kraft appearance on the final layout.
  • Optional valve. If your product needs a degassing valve, include it in the brief. Suitability, valve type and position are reviewed for the selected construction; a valve is not assumed in every configuration.

Plan the next step

Plan your kraft flat-bottom bag project

01

Quantity guidance

Share quantities per size, material and artwork version for guidance.

02

Sampling

Tell us whether you need a reference sample or a sample for fill, fit and sealing review. Availability and custom sample requirements are confirmed for the proposed specification.

03

Project timing

Sampling and production timing are confirmed after the construction, features and artwork are reviewed.

Is this different from an eight-side-seal or square-bottom bag?
These terms can describe the same general flat-bottom or box-pouch family. JX-KF-001 focuses on a kraft paper reference configuration. Compare the actual base and seal construction, material layers, dimensions and opening details with JX-8S-001 rather than choosing by the name alone.
Is the kraft bag recyclable or made only from paper?
The source reference lists kraft paper / aluminium foil / PE, so it is not described as a paper-only bag. The kraft appearance does not establish recyclability. Any material or recycling claim needs to be checked against the final construction and relevant collection system.
Does this bag include a zipper and a valve?
A resealable opening is shown in the reference. The zipper arrangement, filling access and final seals are confirmed for the project. A degassing valve is an optional requirement to discuss; its type, position and suitability are not assumed for every bag.
What should I send for a quote?
Share what you need to pack, the target fill, width × height × depth if known, quantities per artwork, delivery destination and your filling process. Include any laminate, zipper, valve, printing or sample requirements so we can review a clear specification.

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Let’s specify your kraft flat-bottom bag.

Share your product, target fill and branding. We’ll review the size, laminate, opening and features for your project.

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