Flexon Pack / Custom PE Packaging

Custom Ziplock Bags

Custom LDPE and PE press-to-close bags for hardware, industrial components, retail kits and warehouse identification. Specify the size, film thickness, zipper profile and printing around your packed product.

  • Single- or double-track closures
  • Custom sizes and printing
  • Write-on panels and vent holes
Request a Custom Quote Compare Bag Types

Not sure which thickness to choose? Include your product, unit weight, quantity and destination in your inquiry for a recommended construction.

Custom LDPE press-to-close ziplock bags from Flexon Pack

Choose Your Custom PE Packaging

Press-to-Close PE Bags Built Around Your Product

Flexon Pack manufactures custom press-to-close PE ziplock bags for parts sorting, accessories, retail kits and commercial packaging. Compare usable dimensions, single-layer thickness and closure options around the product you need to pack.

Single-track and double-track closures, custom printing, write-on areas and ventilation holes can be reviewed for the selected construction. The product gallery below shows appearance references; confirm the actual specification in your quotation.

Send the packed product, unit weight, required quantity, intended use and destination country. Our team will recommend a practical construction and prepare a project quotation.

  • Material optionsLDPE / LLDPE / Custom PE
  • Custom width30–750 mm
  • Film thickness per wall30–150 μm
  • Closure optionsSingle-Track / Double-Track
  • Custom printingGravure / Up to 8 Colors
  • Additional featuresWrite-on / Vent Holes / Barcodes
  • SamplingExisting Samples / Custom Prototypes

These are published customization ranges, not fixed specifications for every product shown. Confirm the measurement convention, tolerances, material, closure, printing and packing requirements for your order.

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Will my product fit?

Find the Right Fit

Compare the usable space, not just the bag's outside dimensions. Ask for a dimensioned drawing that defines the width, zipper position and height convention for your quotation.

A · Inside width
The space between the inner edges of the side seals.
B · Usable height below the zipper
The space from below the closure to the inner edge of the bottom seal.
C · Overall height
The outside height, including the zipper area and opening lip.

Allow room for the depth of your contents and for closing the zipper. Confirm dimensional tolerances in the order specification; this illustration is not a quoted size.

Discuss My Bag Size
View the dimension drawing: inside width and usable height
Ziplock bag dimension convention schematic A shows inside width between side seals. B shows usable height below the closure. C shows overall outside height including the opening lip. Not to scale. Opening lip Closure area A B C
Measurement guide only · Not to scale. Confirm the agreed measurement points and tolerances for your selected construction.

What does the thickness mean?

Know Your Film Thickness

Specify thickness per wall, with its unit and agreed tolerance. A measurement through two flattened walls is not the same as a single-layer film thickness.

Material and gauge
Record the selected PE construction and nominal single-layer thickness in the quotation.
Units
1 mil = 25.4 μm. “Mil” means one thousandth of an inch, not a millimetre.
Tolerance and evidence
Agree the tolerance and measurement method. Ask which sample-specific measurement photos or records are available for review.

Select a construction around product weight, edge shape, bag size and handling. Evaluate a sample with your actual contents before committing to a bulk order.

Ask About Thickness and Samples
View the per-wall thickness illustration

Per-wall vs. two-wall measurement

Two walls of a bag, with single-wall thickness indicated Separated lines represent the front and back film walls. Thickness is specified for one wall, not the sum of both. Illustration only. Front wall Back wall 1 wall
Explanatory illustration, not a measurement result. No measured thickness, tolerance or performance is established by this diagram.

Published customization range: 30–150 μm. Availability and tolerance must be confirmed for the selected size and construction; this range is not a weight-capacity rating.

A measured sample, not a catalogue-wide specification

Sample Measurement Reference

These recorded measurements describe the sample shown. Use them to understand the difference between outside dimensions, usable space and a combined two-wall thickness reading.

Outside width
170 mm / 17 cm
Overall / usable height
230 mm / 200 mm
Combined two-wall thickness
0.13 mm / 130 μm
Not a per-wall measurement
View the three sample measurement photos
AI-retouched photograph of a dial gauge measuring the front and back walls of a ziplock bag together

Combined Two-Wall Thickness

Recorded combined thickness: 0.13 mm / 130 μm.

The front and back walls were measured together. This is not a separate single-wall thickness measurement.

Select the photo to view it full size.

AI-retouched photograph of a ziplock bag placed sideways beside a ruler to show its outside width

Outside Width

Recorded outside width: 170 mm / 17 cm.

Outside edge to outside edge. This value is not the inside width between the side seals.

Select the photo to view it full size.

AI-retouched photograph of a ziplock bag beside a ruler showing overall height and the space below its zipper

Overall and Usable Height

Recorded overall height: 230 mm / 23 cm.
Recorded usable height below the zipper: 200 mm / 20 cm.

Overall height includes the closure area and opening lip. Confirm the usable space for your actual contents.

Select the photo to view it full size.

This sample's 130 μm reading is the combined thickness of two walls, not a quoted per-wall gauge. Confirm dimensions, nominal thickness per wall, measurement points and agreed tolerances in your order specification. Inside width and production tolerances are not established by these photos.

AI-retouched to remove customer branding; these display images are not unedited inspection records. Verify measurements against the original photographs and measurement records.

Discuss My Size and Thickness
Ziplock bag product appearance reference from the existing Flexon collection
Product appearance reference only. This photograph does not establish seal strength, repeated-use durability or leak resistance.

Will the closure suit my application?

Check the Closure in Use

A single-track closure has one interlocking profile; a double-track closure has two. Choose around the contents, required opening force and handling conditions—not the track count alone.

  1. Open and close: check that the selected sample can be closed across the full width and opened as intended.
  2. Pack the actual contents: check fit, closure clearance and contact with the side and bottom seals.
  3. Review the handling: agree any repeated-use, puncture or seal-strength checks needed for your order.

For a useful demonstration, identify the bag size, single-layer thickness, closure type, packed item, item weight and demonstration conditions. Ask about sample availability and the relevant photos, videos or inspection records available for the proposed specification.

A packing demonstration is not a certified performance test. Leak-proof, airtight, sterile or electrostatic-shielding requirements need a separately evaluated construction and agreed acceptance criteria.

Discuss Closure and Sample Checks

Custom Ziplock Bag Types and Recommended Uses

Compare Flexon’s standard clear, heavy-duty, anti-static and write-on ziplock bag options. Each construction can be customized by dimensions, film thickness, zipper profile, color and printing according to the packed product and application requirements.

Images are appearance references, not inspection records. Thickness ranges are starting points, not performance ratings. Confirm availability and evaluate the selected construction with your actual contents. Review thickness guidance.

Compliance Evidence

Review Documents for Your Selected Construction

Flexon organizes available material test reports and management-system documents according to the selected resin, additives, printing system, intended application and destination market. During order review, the applicable documents are matched to the proposed specification.

  1. FDA 21 CFR 177.1520 Material Report

    Analytical Report by SGS

    Relevant to: selected virgin PE materials intended for food-contact ziplock bag projects.

    Coverage should be checked against the resin, additives, colorants, printing and intended food-contact conditions named in the report.

    View Report

  2. PFAS Screening Report

    Screening Report by SGS

    Relevant to: buyers requiring PFAS screening evidence for the tested PE material or finished sample.

    The result applies to the identified sample and tested substances shown in the report.

    View Report

  3. RoHS 10 Chemical Test Report

    Chemical Analysis by CTI

    Relevant to: selected material specifications for electronics, hardware and other projects requesting restricted-substance testing.

    RoHS evidence addresses the tested restricted substances; it does not establish food-contact or medical suitability.

    View Report

  4. ISO 9001 & ISO 14001 Systems

    Quality & Environmental Management

    Relevant to: buyers evaluating Flexon’s quality-management and environmental-management systems.

    These certificates describe the applicable management systems; product-specific requirements are handled through the approved specification and inspection criteria.

    View Certificates

Match each document to the legal holder, tested sample, report date and final order specification. View the complete Flexon Compliance Vault for the available reports and certificates.

Ask Which Reports Apply

Application Guidance

Best Uses for Custom Ziplock Bags

Press-to-close PE ziplock bags provide convenient organization, ordinary dust and moisture protection, and repeated access for industrial parts, samples, retail products and compatible goods.

Recommended Applications

Suitable when the material, thickness and zipper profile are matched to the packed product.

  1. Hardware, Fasteners and Small Parts

    Organizes screws, fittings, spare parts and industrial components. Heavy or sharp items may require thicker film and puncture testing.

  2. Retail and Promotional Packaging

    Suitable for accessories, samples, kits, promotional products and branded retail packs requiring repeated opening and closing.

  3. Food Organization and Hospitality

    Can be configured for food-contact projects when the resin, additives, colorants and printing system are matched to the intended food and supporting report.

  4. Inventory, Samples and Warehouse Identification

    Write-on panels, barcodes and custom printing can support sample tracking, batch identification and inventory organization.

  5. Selected Electronic Components

    Anti-static PE options may be used when the required surface-resistance range is specified and verified for the application.

Applications Requiring a Different Packaging System

These uses normally require a validated construction, documented test method or specialist packaging system.

  1. Sterile or Validated Medical Barrier Packaging

    A standard ziplock bag is not a sterile barrier and should not be used as primary sterile medical packaging without dedicated validation.

  2. Long-Term Liquid Storage or Transport

    Press-to-close seals should not be assumed to be leak-proof. Liquid applications require a tested seal structure and defined acceptance criteria.

  3. Vacuum, Retort or High-Temperature Processing

    Standard LDPE ziplock bags are not designed for retort, boiling, oven use, hot filling or vacuum-processing conditions unless separately engineered.

  4. Hazardous Materials or Dangerous Goods

    Chemicals, infectious substances and regulated dangerous goods require packaging tested and approved for the applicable transport or containment standard.

  5. Electrostatic Shielding

    An anti-static PE bag is not the same as a static-shielding bag. Sensitive electronics may require metallized or multilayer shielding packaging with verified performance.

For sterile, liquid, high-temperature, dangerous-goods or electrostatic-shielding applications, request a separate technical review instead of specifying a standard press-to-close bag.

Confirm Specifications Before Production

Review the same specification in your quotation, sample approval and order confirmation. Resolve any differences before authorizing production.

  • DimensionsInside width, usable height, overall height and agreed dimensional tolerances.
  • FilmMaterial construction, thickness per wall, units, tolerance and measurement method.
  • Closure and artworkSingle- or double-track profile, zipper position, approved artwork and optional features.
  • Packing and inspectionInner-pack and carton quantities, label details, inspection scope and acceptance criteria.

Ask which specification sheets, inspection records and packing-label examples can be shared for your project. A material or management-system report does not, by itself, verify the dimensions or quality of every finished batch.

Discuss My Order Specification →

Plan Your Bulk Order

Confirm order quantity, bags per inner pack, bags per carton, carton labels and shipping destination in the quotation. Packing quantities depend on the selected item and order.

Production is not transit time. Typical production is approximately 20–30 days after specification, artwork, sample and order details are approved. Confirm the current schedule and start conditions for your order separately from freight, customs clearance and final delivery.

Ask About Packing and Timing →

Get Help With Your Order

Choose “Help with an existing order” in the form below and include your order number, affected quantity and issue description in the message. Include the agreed size or thickness and any relevant carton or batch identification.

Ask how to send supporting photos or video. The review process and any resolution should be confirmed against your agreed order terms.

Contact Us About an Order →

Before You Request a Quote

A few final checks on measurement conventions, samples, intended use and order requirements.

Does the quoted height include the zipper and opening lip?

Do not assume one convention applies to every bag. Confirm inside width, usable height below the closure, overall height and measurement points in the dimensioned drawing for your quotation. See the measurement guide.

What material and thickness should I specify?

LDPE, LLDPE and custom PE constructions can be reviewed for the project. State the intended use, product weight, edge shape and handling conditions. Specify nominal thickness per wall, units and agreed tolerance; a thicker film is not automatically suitable for every application. Review thickness and sample checks.

Can I estimate thickness without a thickness gauge?

Bag dimensions and weight can help with a rough thickness estimate, but zipper profiles, printing, material density and other construction details affect the result.

Send us the bag dimensions, the number of empty bags weighed, their total weight and clear photos. Include the measurement units and material, if known. We can review the construction and discuss an approximate thickness.

Weight-based estimates are for preliminary guidance only, not a substitute for agreed thickness measurements or batch inspection.

Discuss my bag measurements.

Can I evaluate samples before placing a bulk order?

Existing samples may be available, and custom-size or printed prototypes can be reviewed. Contact us to confirm the exact sample specification, availability, sample charges, freight and lead time. Evaluate the selected sample with your actual contents.

Is a standard bag suitable for food contact or ESD-sensitive parts?

Suitability must be confirmed for the selected resin, additives, printing and conditions of use. Review applicable food-contact evidence for the proposed construction. An anti-static PE bag is not automatically a static-shielding bag; specify the protection needed for sensitive components. Review the available document links.

What customization options and MOQ can be discussed?

The published ranges are widths of 30–750 mm and single-layer film thicknesses of 30–150 μm, with custom lengths, single- or double-track closures, printing up to eight colors and selected additional features. Availability and mass-production MOQ depend on size, material, closure, printing and packing; confirm them in the quotation.

What information is needed for a quotation?

Send the packed product and its dimensions, unit weight, required bag size or reference sample, preferred single-layer thickness, quantity, closure type, artwork, intended use and destination. Include any packing, inspection and document requirements. Send your requirements.

Tell Us What You Need to Pack

Request a quote, ask about samples or get help with an existing order. Typical response within 1 business day.

Name, email and message are required. Other details can be confirmed together.

Not sure about size or thickness? Describe your product and we can discuss suitable options.

Add thickness, printing or document requirements (optional)

Explore practical guidance on PE material selection, film thickness, custom printing and purchasing specifications for industrial and retail ziplock bags.

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