Resealable self-seal polythene bags are a versatile packaging solution that allows for easy opening, closing, and re-closing.

Reusability: Can be opened and closed multiple times.

PWN = Printed Warning Notice

Bags / Polythene (Popular) / Resealable SelfSeal

Resealable Self-Seal Polythene Bags: Practical Storage & Packing for Fast-Moving Workflows

Resealable self-seal polythene bags (often called press-seal or grip-seal bags) are designed for repeated opening and closing without additional tape, staples, or heat sealing. They are widely used for organising, protecting, and presenting items where quick access matters—such as parts picking, kitting, returns processing, sample distribution, and general stock control. The closure helps reduce accidental spills and keeps contents together, while the clear film supports easy identification during handling and audits.

Within this collection you’ll find clear resealable bags in popular sizes and film gauges, including options with perforation and printed warning notices (PWN). These features are commonly specified when packaging items that may be supplied to consumers and where safety messaging and controlled opening are required.

Resealable SelfSeal Polythene Bags — Helpful Guide

This guide explains the main types of resealable self-seal bags in this category and how to match them to your packing task. Where relevant, product names below are linked so you can quickly cross-check dimensions, gauge, and printed notice details.

1) Clear resealable bags with printed warning notice (PWN)

Printed warning notice bags include a safety message on the bag film. In many supply chains, this is used to communicate suffocation risk and handling guidance when packaging items that could be accessed by children. If your process requires a warning notice, confirm the exact wording, language set, and placement required by your compliance team before ordering.

• 14x17 (355x430+50mm) - 30mic Clear Re-Sealable, Perforated & Registered Single L PWN Poly Bags
  Clear resealable bags in a popular 14x17 size with a single-language printed warning notice, plus perforation and registered print alignment for consistent presentation.
• 300x381+50mm - 30mic (12x15) Clear Re-Sealable, Perforated & Registered Single L PWN Poly Bags
  A 12x15 format in 30 micron film, suited to parts, garments, and boxed components where a warning notice and controlled opening are specified.
• 380x510+50mm-30mic (15x20+1.5 -120g) Clear S&RS Poly Bags, Perf'd & Reg. Single PWN Poly Bags
  Larger 15x20 style bags with perforation and registered single warning notice print—useful for bulkier items that still need reseal convenience.

2) Multi-language warning notice (5-language) resealable bags

Multi-language warning notice bags are often chosen for distribution across multiple regions or where end users may speak different languages. The goal is consistent safety communication without needing separate packaging variants. As with any printed notice, verify the language set and compliance requirements for your destination markets.

• 355x430+38mm-37mic(14x17+1.5-150g) Clear Poly Bags, S&RS Perforated 5 Language Warning Notice
  A 14x17 format in a heavier 37 micron film with perforation and a 5-language warning notice—useful where extra robustness is preferred.
• 300x381+50mm-37mic (12x15x1.5 150g) Clear Poly Bags, S&RS Perforated 5 Language Warning Notice
  12x15 size in 37 micron film with perforation and 5-language warning notice—often selected for higher handling intensity or sharper-edged contents.

3) Plain clear resealable bags (no printed notice)

Plain clear resealable bags are a straightforward choice for internal storage, component control, and non-consumer-facing packing. They keep items grouped, reduce dust ingress, and allow quick visual checks. If you don’t need printed messaging, plain bags can simplify artwork approvals and reduce the risk of using the wrong notice variant.

• 15x20+2 - 120g Clear Poly Bag Reseal (550x710mm+50mm - 30mu)
  A large clear reseal bag option for bulky items or grouped packs where quick access is needed.
• 15.5x22+2.5 - 120g Clear 30% Recy Poly Bag Reseal (390x560+65mm-30mic)
  Clear reseal bag made with recycled content (30% recycled), suitable for organisations aiming to incorporate recycled material into packaging specifications.
• 22x28+2 - 120g Clear Poly Bag Reseal (550x710mm+50mm - 30mu)
  Extra-large reseal bag format for oversized items, multi-item kits, or protective outer packing.

Understanding Key Terms on Resealable Bag Specifications

Micron (mic) / mu: film thickness

Micron (often written as “mic” or “µ”) indicates film thickness. In general, thicker film provides improved puncture resistance and stiffness, which can help when packing heavier items, sharp corners, or products that will be handled repeatedly. Thinner film can be more flexible and may suit lighter contents. Always test with your actual product, especially if edges, staples, or metal parts are involved.

Bag size formats and the “+” allowance

Many bag sizes are shown with a “+” value (for example, 300x381+50mm). This commonly indicates an additional flap or closure allowance beyond the main body dimensions. When checking fit, focus on the usable internal width and height for the contents, then confirm whether the closure allowance affects how much space remains once sealed.

Perforated

Perforation can support controlled opening, separation, or tear-off functionality depending on the bag design. In operational settings, perforation can help standardise how bags are opened and can reduce time spent searching for scissors or blades. If you pack delicate items, confirm that the perforation location won’t snag or compromise protection.

Registered print (Reg.)

Registered print typically means the printed warning notice is aligned consistently in the same position from bag to bag. This can matter for presentation, scanning, or compliance checks where the notice must be clearly visible. If your workflow includes automated packing or visual QC, consistent print placement can reduce rework.

Case Study: Improving Picking Accuracy and Returns Handling

A small fulfilment operation handling mixed SKUs (fasteners, accessories, and small boxed items) often struggles with mis-picks and messy returns. By switching to clear resealable self-seal bags, the team can create standard “kits” for common orders and label each bag consistently. The reseal closure allows staff to open a returned kit, verify contents, and re-close it without replacing the outer packaging. When warning notices are required for consumer shipments, using the correct PWN variant helps keep compliance checks simple and repeatable.

Key operational outcomes typically include: fewer loose components in totes, faster cycle counts due to visibility, and reduced packaging waste because bags can be re-used during internal handling steps.

How to Choose the Correct Resealable Self-Seal Bag

Step 1: Define the use case (internal storage vs. consumer shipment)

If bags are used only for internal storage, plain clear resealable bags may be sufficient. If bags will be supplied to end users, you may need a printed warning notice. Confirm whether your process requires single-language or multi-language notices and whether the notice must be registered and/or perforated.

Step 2: Measure your product correctly

Measure the maximum width, height, and depth of the item (or bundle). For irregular shapes, measure the widest points. Add clearance for easy insertion and removal—especially if operators wear gloves or if items are inserted quickly on a packing bench. If you’re packing multiple items together, test the “worst case” bundle.

Step 3: Select an appropriate film gauge

Choose a gauge that matches handling intensity and risk of puncture. For lightweight soft goods, a standard gauge may work well. For heavier items, sharp edges, or frequent opening/closing, consider a thicker film. If you’re unsure, trial two gauges and compare damage rates and handling speed.

Step 4: Decide on perforation and print requirements

Perforation can help standardise opening and improve speed. Registered print can support consistent presentation and compliance visibility. If your packing line uses checklists or visual inspection, these features can reduce ambiguity. If you rely on barcode labels, ensure the print area won’t interfere with label placement.

Step 5: Validate with a simple line trial

Before committing to a full run, test the bag with real products and real operators. Check: insertion time, closure reliability, readability of any printed notice, and whether the bag tears during opening. Also confirm that the packed item fits comfortably without stressing seams or the closure track.

Handling, Storage, and Best Practices

• Keep closures clean: Dust, powder, or small fragments can reduce closure performance. If you pack items that shed debris, consider cleaning steps or secondary containment.
• Avoid overfilling: Overfilling can strain seams and prevent the closure from engaging fully across the width.
• Label consistently: Clear bags make labels easy to read; place labels where they won’t cover warning notices or interfere with resealing.
• Store correctly: Keep bags away from excessive heat and direct sunlight to help maintain film performance over time.

Common Applications

• Parts and components: screws, fittings, electrical accessories, and repair kits
• Apparel and textiles: folded garments, samples, and accessories
• Documents and inserts: manuals, leaflets, and small paperwork packs (where appropriate)
• Returns processing: temporary containment and re-sealing during inspection
• Workshop and maintenance: organising consumables and small tools