Bags / Sacks / Woven Polypropylene Sacks

 

Order Code	Size (Inches)	Size (mm)	Pack Quantity
09W12	12 x 18	300 x 450	100
09W15	15 x 20	380 x 500	100
09W18	18 x 24	450 x 600	100
09W20	20 x 30	500 x 750	100
09W24	24 x 40	600 x 1000	100

Woven Polypropylene Sacks (White) — Practical Overview

Woven polypropylene (often shortened to “woven PP”) sacks are a tough, lightweight packaging option designed for handling bulky or heavy items. The woven construction creates a fabric-like structure that resists splitting and tearing better than many thin-film bags, making these sacks a common choice for storage, internal handling, and dispatch where durability matters.

This collection focuses on white multi-purpose woven polypropylene sacks in a range of practical sizes. They are frequently used as an outer sack for mixed items, as a protective over-bag for boxed goods, or as a simple way to contain awkward shapes that don’t suit cartons. The white surface is also useful where clear identification, labelling, or printed information is required.

Woven Polypropylene Sacks — Helpful Guide

Below is a straightforward guide to the sack types and sizes available in this category, along with typical use-cases and how to match a sack size to what you’re packing. The products listed are the woven polypropylene sacks shown on this page.

1) White Woven Polypropylene Sacks (multi-purpose)

These sacks are designed for general packaging and handling. The woven structure helps reduce the risk of splits when the sack is filled with heavier or sharper-edged contents. They are commonly used for consolidating items, protecting goods from scuffs during transport, and keeping components together for storage or dispatch.

• 12x18 - White Woven Poly Prop Sacks
  

  A compact sack size suited to smaller parts, samples, spares, and short runs of components. Useful when you want a tough outer bag without excessive spare material.

• 15x20 - White Woven Poly Prop Sacks
  

  A versatile mid-small size for mixed items, bundled components, or heavier products that still fit comfortably in a hand-held sack. Often chosen for tidy consolidation and easier handling.

• 18x24 - White Woven Poly Prop Sacks
  

  A popular general-purpose size for bulkier contents. Provides extra height for irregular shapes and is useful where you need more capacity while keeping the sack manageable for lifting and stacking.

• 20x30 - White Woven Poly Prop Sacks
  

  A larger sack format for bulky or heavier consignments. Suitable for consolidating multiple items into one robust outer sack, particularly where cartons are impractical or where an additional protective layer is needed.

• 24x40 - White Woven Poly Prop Sacks
  

  An extra-large option for high-volume or oversized items. Useful for large, lightweight-but-bulky contents, protective over-bagging, or situations where you need generous internal space and a strong woven structure.

Key Characteristics of Woven PP Sacks

Strength from a woven structure

Unlike smooth film bags, woven polypropylene sacks are made from interlaced strands. This construction helps the sack resist tearing and splitting when subjected to load, abrasion, or movement during handling. It also makes them a practical choice when contents have corners, edges, or uneven surfaces.

Lightweight handling

Woven PP sacks are designed to provide strength without excessive weight. This can be helpful where you want robust containment while keeping overall package weight under control for manual handling and distribution.

Surface suitable for labelling and identification

The white finish supports clear visibility of labels, marker pen notes, and printed information. In many packing environments, this improves picking accuracy and reduces the chance of misidentification when sacks are stacked or stored.

Moisture resistance (practical, not waterproof)

Polypropylene is inherently moisture resistant, and woven sacks can help protect contents from light splashes and damp conditions. However, because the material is woven, it is not the same as a sealed waterproof barrier. If you need a fully sealed moisture barrier, consider using an inner liner or a sealed bag inside the sack.

Recyclability

These sacks are described on this page as 100% recyclable. In practice, recycling routes can vary by location and local waste contractor, so it’s sensible to confirm the appropriate disposal method for polypropylene packaging in your area.

Case Study: Consolidating Bulky Components for Dispatch

A warehouse team regularly ships mixed, heavy components that vary in shape and don’t always fit standard cartons efficiently. Previously, items were packed into oversized boxes with void fill, which increased packing time and created inconsistent parcel sizes.

By switching to woven polypropylene sacks as an outer pack, the team was able to:

• Reduce split failures compared with lighter-duty bags when items had sharp corners or uneven profiles.
• Speed up packing by consolidating multiple items into one sack without complex box building.
• Improve identification using clear labelling on the white surface for pick/pack checks.

For heavier loads, the team selected larger sack sizes to avoid overfilling and to maintain a safer, more stable shape for handling and stacking.

How to Choose the Correct Sack Size

Choosing the right woven polypropylene sack is mainly about matching internal volume and handling requirements to your product. Use the steps below to narrow down the best option.

Step 1: Measure the packed item (not just the product)

Measure the maximum width, depth, and height of the item as it will be placed into the sack. If you are packing multiple items together, measure the combined bundle. For irregular shapes, measure the widest points and allow extra space for easy insertion.

Step 2: Allow for “bulge” and closure space

Sacks need spare material at the top for closing (tying, taping, stitching, or other closure methods depending on your process). Overfilling increases stress on seams and can make the sack difficult to handle. As a rule, aim to leave enough headspace so the top can be closed without forcing the contents upward.

Step 3: Consider weight and manual handling

Even if a product fits, a larger sack can encourage overloading. If sacks will be lifted by hand, choose a size that supports safe handling and stable stacking. For heavier contents, selecting a sack that fits comfortably (rather than tightly) can reduce strain on the material during lifting and movement.

Step 4: Match the sack to the distribution method

• Parcel networks: choose a size that keeps the final package compact and reduces snagging risk.
• Palletised shipments: larger sacks can work well for consolidation, but ensure they stack neatly and don’t create unstable loads.
• Internal storage: consider how sacks will be labelled, shelved, or stacked for picking.

Step 5: Decide whether you need an inner liner

If your contents are dusty, fine, or sensitive to moisture, an inner liner can help. Woven sacks are strong and practical, but they are not a sealed barrier. A liner can also help prevent small particles from working through the weave during transport.

Typical Applications

Woven polypropylene sacks are used across many sectors because they combine strength with straightforward handling. Common applications include:

• Industrial components: consolidating parts, fittings, and mixed items for dispatch.
• Warehousing and logistics: over-bagging cartons or bundling multiple packs into one outer sack.
• Workshops and maintenance: storing spares, cables, and consumables in a tough, label-friendly container.
• General storage: keeping bulky items together and reducing damage from scuffs and abrasion.

Handling, Closure, and Labelling Tips

Closing the sack

Closure method depends on your process and the nature of the contents. Common approaches include tying, taping, or using a suitable sealing method where applicable. The key is to avoid overfilling so the closure can be made securely without stressing the top seam.

Labelling for traceability

For efficient picking and dispatch, place labels on a flat area of the sack where they won’t crease. If sacks are stacked, consider applying labels on two sides so at least one remains visible. For short-term identification, marker pen notes can be effective on the white surface.

Reducing damage in transit

• Remove or cover sharp protrusions on the contents where possible.
• Use an inner wrap or protective layer for items with abrasive surfaces.
• Choose a sack size that allows contents to sit naturally rather than forcing corners into the weave.

Printing and Presentation (General Guidance)

This page notes that these sacks can be printed up to 4 colours. Printed sacks are often used for identification, handling instructions, or internal process control. If you are planning printed information, consider what needs to remain readable after handling (for example, large text, simple icons, or high-contrast layouts).

Frequently Asked Questions