Block Bottom SOS Kraft
Bleached Kraft S.O.S. Bags (Polythene Lined) — Product Overview
These bleached kraft S.O.S. (Self-Opening Sack) paper bags are designed for fast, reliable packing with a stable block-bottom base and a clean, bright presentation. The integrated polythene lining adds a moisture and grease-resistant barrier, helping protect contents and maintain bag integrity in demanding food and retail environments. This product is supplied as a configurable listing, so it may be available in multiple pack quantities and stock positions.
Key Features
Block-bottom “S.O.S.” design:
The flat, block-bottom construction helps the bag stand upright for easier filling, quicker service, and a more professional presentation at point of sale.
Bleached kraft paper finish:
A bright, clean-looking kraft paper that suits premium retail and food-to-go applications where appearance matters.
Polythene-lined interior:
The internal lining provides an additional barrier that can help reduce soak-through from moisture, oils, and grease, supporting cleaner handling and improved performance.
Efficient packing and storage:
S.O.S. bags are typically supplied flat-packed, helping reduce storage space and enabling quick dispensing during busy periods.
Versatile for food and non-food use:
Suitable for a wide range of items where a paper outer with a protective lining is beneficial—especially for takeaway, deli, bakery, and general retail.
- Stable block-bottom base for upright filling
- Bleached kraft outer for a clean, premium look
- Polythene lining to help resist moisture/grease
- Fast to pack in high-throughput environments
- Multi-purpose for food-to-go and retail items
Typical Uses
- Food-to-go and takeaway service (hot or ambient items where a lining is helpful)
- Bakery and deli counter packing
- Confectionery and snack service
- Retail packing for small goods and accessories
- Back-of-house portioning and prep where a lined paper bag is preferred
Bleached Kraft S.O.S. Bags (Polythene Lined) — Full Product Guide
S.O.S. bags (Self-Opening Sack) are a popular paper bag format used across food service and retail because they combine speed, stability, and a tidy presentation. The defining feature is the block-bottom base: when opened, the bag forms a flat bottom that helps it stand upright. This makes it easier to fill compared with many flat paper bags, particularly when staff are working quickly or when items need to be placed neatly inside.
This version pairs a bleached kraft paper exterior with a polythene-lined interior. The bleached kraft finish provides a bright, clean appearance that can suit premium counters and front-of-house service. The polythene lining adds a protective layer that can help reduce the risk of moisture or grease migrating through the paper, supporting cleaner handling and helping the bag maintain its structure during use.
How It Works
1) Open and form the base:
S.O.S. bags are supplied flat. When opened, the gussets expand and the block-bottom base forms, allowing the bag to stand upright.
2) Fill efficiently:
The upright stance supports quick loading of items—useful for counters, pass-throughs, and packing stations.
3) Barrier support from the lining:
The polythene lining provides an internal layer that can help resist moisture and grease, reducing the chance of soak-through and helping keep the outer surface cleaner.
Materials and Construction
Outer material:
Bleached kraft paper provides a clean, bright look and a familiar paper-bag feel.
Inner lining:
A polythene lining is integrated to provide an additional barrier layer. This can be particularly beneficial for foods or items that may release oils, condensation, or moisture.
Block-bottom structure:
The base is constructed to create a flat bottom when opened, improving stability and making the bag easier to fill and present.
Floor Type Compatibility
These are hand-packed bags rather than a floor covering product, so “floor compatibility” is not applicable. However, the block-bottom design can help reduce tipping on counters and packing benches by allowing the bag to stand upright during filling.
Health and Safety
- Food contact considerations: If you are using these bags for food service, confirm suitability for your specific food-contact requirements and local regulations.
- Hot contents: Allow very hot items to vent where appropriate to reduce condensation build-up, which can affect any paper packaging.
- Allergen control: Use standard hygiene practices and avoid cross-contamination in prep and packing areas.
Ideal Applications and Use Cases
Takeaway and food-to-go:
The lined interior can help when packing items that may release oils or moisture, while the block-bottom base supports quick, tidy packing.
Bakery and deli:
Useful for pastries, baked goods, and deli items where presentation and handling matter.
Retail and counter service:
A clean bleached kraft look can suit premium retail counters, gift shops, and general merchandise packing.
Back-of-house prep:
Can be used for portioning or staging items where a lined paper bag is preferred.
Maintenance, Cleaning and Care
- Storage: Keep bags in a clean, dry area away from direct moisture and excessive heat.
- Handling: Avoid overfilling; use an appropriate bag size for the contents to maintain shape and reduce stress on seams.
- Moisture management: For items that generate steam/condensation, consider venting or cooling briefly before bagging to help maintain paper strength.
Case Study (Example Workflow)
Busy lunchtime counter packing:
A café uses block-bottom S.O.S. bags at the pass to speed up service. Staff open the bag, set it upright on the counter, and load boxed or wrapped items quickly. The polythene lining helps reduce the chance of grease marks or moisture transfer, keeping the outer bag cleaner for customers and improving the overall presentation during peak periods.
Who is it for?
- Cafés, bakeries, delis, and takeaway operators needing fast, tidy packing
- Retailers wanting a clean, bright paper bag presentation
- Businesses looking for a paper outer with an added internal barrier layer
Colours / Features Available
- Colour: Bleached kraft (bright paper finish)
- Feature: Polythene-lined interior
- Format: Block-bottom S.O.S. paper bag
Sizes Available
This product page may represent multiple variants. Select the required option on the page for the available sizes and pack quantities. Where sizes are shown in the title/variant options, use those as the definitive specification for ordering.