Custom Bag Blog

Guides on custom bags - materials, printing methods, MOQ and quality checks - from China Bags Depot.

Pencil Case Bulk Order Spec Sheet: 7 Fields Buyers ForgetSeven fields decide whether a pencil case bulk order matches its sample: measured size, fill capacity, fabric weight, zip spec, print placement box, internal pockets and carton plan.Nov 7, 2026 Pencil Case Carton Drop Test: 3 Heights and What They ProveThe drop height decides which defect appears, not whether the case was made well. A three-height protocol for pencil case cartons, with the checks to run after every drop.Nov 6, 2026 Pencil Case Sourcing Calendar: 6 Lead Times to Plan AroundCount back from the retail shelf date, not the PO date. The six dates that set a pencil case order, which ones respond to money, and where a buffer actually absorbs a slip.Nov 5, 2026 Pencil Case Sample Approval: 7 Details to PhotographSix of the seven approval details are settled by how the sample was shot, not by what was said on the call. The shot list, the ruler trick and what a photo cannot prove.Nov 4, 2026 Pencil Case MOQ Explained: 4 Cost Lines That Set Your MinimumA pencil case minimum is the highest of four cost floors. Fabric cut lengths, line balancing, screen setup and carton fill decide it, and only two of them are worth redesigning.Nov 3, 2026 REACH and Prop 65 for Bags: 5 Documents to RequestA REACH certificate does not exist, and a Prop 65 compliant letter is not a document you can defend. Here are the five reports that cover a bag end to end, the limits each one tests against, and the five reasons packs get returned.Nov 2, 2026 Bag MOQ Reality Check: What 300 Pieces Actually Costs Per UnitAt 300 pieces a bag order is a sample run repeated, priced by costs that do not scale. How to split tooling from unit price, read a fabric minimum in metres, and see which line actually drops.Nov 1, 2026 Cooler Bag Ice Retention: A 24-Hour Test ProtocolIce retention claims only compare when ambient, fill ratio and lid activity are fixed. Here is the rig, the checkpoints and what each phase of the temperature curve indicts.Oct 31, 2026 PU Handbag Peeling: 3 Tests That Predict ReturnsPU does not wear out, it lets go: the coating loses adhesion at a crease or an edge and lifts in sheets. Fold, cross-hatch and sweat tests find it on a sample in one hour.Oct 30, 2026 Pencil Bag Printing: Screen vs Heat Transfer at 3,000 UnitsColour count and the smallest stroke pick the method for a 3,000 piece pencil bag run, and the body material can overrule both. Here is the breakdown.Oct 29, 2026 School Backpack Safety Specs: 5 Standards for EU and US BuyersFive checks in the order a failure costs most: children's product scope, lead by component, phthalates in the soft trim, drawstring lengths and detachable hardware.Oct 28, 2026 Travel Bag Wheel Test: 4 Checks Before Bulk PaymentWheels fail first and get inspected last. Four checks on a loaded bag, each with a pass line: a 4 km roll, an 8 cm drop and step drag, 2 mm axle play, housing fixings.Oct 27, 2026 Non-woven vs Canvas Promotional Totes: Cost Per UseCost per use is unit price plus print setup divided by honest carries. Trade show or weekly shop decides which tote wins before you look at a sample.Oct 26, 2026 Satchel Price Breaks: 300 vs 1,000 vs 3,000 UnitsEach step in a satchel quote is a fixed cost divided by more units. Here is which lines flip at 300, 1,000 and 3,000 pieces.Oct 25, 2026 Pencil Case Bulk Order: 6 Closure and Lining SpecsSix specs decide whether a 3,000-piece pencil case order arrives usable — and five of them are invisible in a photograph.Oct 25, 2026