DW Flour Bag

A DW flour bag is a woven jute sack made with double-warp construction for bulk flour outer packaging. DW identifies the construction, while the finished dimensions, weight, weave, seams, and lining define the actual bag. Flour’s fine particles make containment at the fabric, stitch holes, and closure particularly important.

Flour mills and packaging buyers should select the complete package around the flour type, filling weight, and packing line. A dense-looking outer sack does not independently establish sift resistance or suitability for direct contact with food.

DW Flour Bag Features

DW flour bag features help buyers compare double-warp construction, usable volume, and closing requirements. Review the jute exterior together with the liner and seams so the completed package suits the flour’s particle size and handling process.

• Double-warp jute construction for a defined commodity sack format.
• Flat bag dimensions for checking filling-line compatibility.
• Empty sack weight stated separately from fabric GSM.
• Outer package that can be assessed with a suitable inner liner.
• Woven surface for flour grade, lot numbers, and shipping marks.

DW Flour Bag Specifications

The table shows a commercially traded DW Flour configuration for quotation. Final capacity, treatment, liner, stitching, closure, and packing must be agreed against the actual flour and approved sample.

The DW Flour name does not identify one universal worldwide specification. Other weights and dimensions are traded, so compare the complete technical details rather than the grade name alone.

Double-Warp Construction and Grade Selection

Double-warp construction should be evaluated with the yarn, weave, fabric weight, and finished sack design. Two DW bags can differ in empty weight, dimensions, seam arrangement, and performance even when their trade descriptions appear similar.

Keep the measurement basis clear when ordering. Finished bag weight is measured per sack, while GSM describes cloth mass per square metre; neither value should be substituted for the other.

When matching an existing bag, provide a sample or drawing with tolerances. Record the weave designation in the same counting system used by the approved specification.

Flour Containment and Inner Liner

Flour can escape through fabric openings, seams, or an unsuitable closure. Assess the smallest particles present and check the complete package after filling and representative handling.

Where an inner package is required, define its material, thickness, dimensions, and sealing method. It should suit the flour, intended contact, filling conditions, and storage requirements.

Check that the liner fits without excessive tension around the corners or mouth. An undersized liner can reduce usable volume or strain during filling even when the outer sack has adequate dimensions.

Filling-Line and Closure Requirements

Provide the filling spout dimensions, intended net weight, mouth width, and closing method with the enquiry. Leave sufficient closing allowance after filling rather than choosing a bag from volume alone.

Agree on the side and bottom seams, sewing thread, mouth finish, and liner attachment where needed. Trial the completed bag on the intended equipment before approving a replacement specification.

Sample checks should cover powder escape, seam opening, liner damage, and closure security. Reassess the package when changing flour grade, filling weight, or handling method.

Food-Contact Treatment and Cleanliness

State whether flour will touch the jute directly or remain inside another package. Review materials and processing for that arrangement, including relevant inks, thread, and liner components.

Specify any batching-oil restrictions, odour criteria, treatment, testing, and supporting documents before production. VOT, JBO-free processing, and food-contact suitability are separate requirements and should be recorded precisely.

Printing and Quality Checks

Submit artwork showing the flour description, net weight, batch identification, and shipping marks. Agree on print size, position, colours, and readability on the selected fabric.

Inspection should compare production with the approved sample and written specification. Useful checks include:

• Finished dimensions, empty weight, and weave
• Fabric defects, cleanliness, and loose fibres
• Side and bottom seams and mouth finish
• Liner fit, integrity, and sealing arrangement
• Sample filling and powder containment
• Treatment documents, printing, and bale count

Agree on tolerances and any additional testing before production. Performance claims should relate to the completed bag selected for the order.

Bale Packing and Storage

Confirm sacks per bale, wrapping, binding, and shipment identification. Container loading depends on the actual compressed bale dimensions and loading plan.

Keep empty sacks and liners dry, clean, and away from chemicals and strong odours. Filled flour also requires suitable warehouse conditions and pest management; an outer jute sack does not replace those controls.

Frequently Asked Questions

Does DW mean the flour bag is double layered?

No. DW means double warp and describes fabric construction. It does not establish the presence of a separate liner or second bag.

Are all DW flour bags 818 g?

No. Different commercial weights and constructions are available. State the exact dimensions, weight, weave, and seams needed for the order.

Is a DW flour sack automatically sift-proof?

No. Powder containment also depends on the seams, liner, closure, and flour particles. Validate the complete package through filling and handling trials.

Can a different filling weight be specified?

Yes, a different requirement can be reviewed against a complete bag specification. Dimensions, fabric, seams, and handling need assessment together.

Request a Bulk Order Quote

Send the flour type, filling weight, bag dimensions, empty weight, weave, quantity, and destination. Include liner, treatment, closure, printing, and inspection requirements for a quotation covering the complete package.