Knowledge Base
Packaging Knowledge Base
Buying guides, technical articles, and sourcing advice for packaging materials and machinery from China.
Adhesives
7 articles
Buying Guide
Complete Guide to Packaging Adhesives
A buyer-focused map of packaging adhesive types used in corrugated, tubes, honeycomb, lamination, and paper converting—plus the specs, trials, and RFQ fields that make China sourcing comparable.
Buying Guide
How to Choose Corrugated Board Glue from China
A practical sourcing framework for corrugated board glue from China: viscosity and gel temperature, powder vs liquid, line-speed fit, trial design, and supplier technical-support tests.
Technical Articles
What Is Alkali-Free Adhesive?
What alkali-free packaging adhesive means in practice: how it differs from caustic-based starch systems, where it helps, what to verify on TDS and trials, and how buyers should qualify it for corrugating lines.
Technical Articles
Why Corrugated Board Delamination Happens
A root-cause guide to corrugated board delamination: adhesive, viscosity, heat, paper moisture, and machine settings—plus a buyer and plant troubleshooting sequence that prevents false blame.
Technical Guide
Why Corrugating Line Glue Viscosity Fluctuates
A process-focused guide for buyers and plant teams: root causes of corrugating glue viscosity swings, shift control loops, audit questions, and how unstable viscosity drives delamination, waste, and weak ECT.
Technical Articles
Adhesive Shelf Life and Storage Guide
How shelf life, humidity, temperature, and packaging form affect starch and paper packaging adhesives—plus warehouse rules and incoming checks buyers should require from Chinese suppliers.
Supplier Guide
Factory Audit Checklist for Adhesive Buyers
A practical adhesive-plant audit playbook for packaging buyers: production authenticity, lab controls, warehouse FIFO, export readiness, red flags, and remote-audit options when you cannot travel yet.
Corrugated Board & Cartons
6 articles
Buying Guide
How to Choose Corrugated Board
A buyer framework for choosing corrugated board: flute and wall type, ECT targets, paper grades, humidity, converting needs, and RFQ fields that make supplier quotes comparable.
Comparison
Single Wall vs Double Wall Corrugated Board
When to use single-wall vs double-wall corrugated board: stacking, puncture, weight, cost, converting, and a practical selection rule for export and e-commerce packs.
Comparison
Kraft Paper vs Corrugated Board
Clear comparison of kraft paper and corrugated board roles in packaging: wrapping and void fill vs structural cartons, with selection rules so buyers stop substituting one for the other.
Technical Articles
Corrugated Board ECT and FCT Explained
A practical buyer guide to Edge Crush Test (ECT) and Flat Crush Test (FCT): what they measure, how to specify them on RFQs, humidity effects, and how to validate board strength beyond marketing claims.
Buying Guide
Corrugated Packaging Sourcing Guide
End-to-end sourcing guide for corrugated packaging from China: specs, supplier shortlist, samples, ECT gates, tooling, inspection, and first bulk-order controls.
Export Guide
Export Carton Packaging Requirements
What export cartons must satisfy beyond domestic shippers: stacking and humidity, marks and compliance claims, palletization, container loading, and documentation buyers should lock before mass production.
Honeycomb & Protective Packaging
5 articles
Comparison
Honeycomb Paper vs Corrugated Board
Compare honeycomb paper and corrugated board on structure, compression, converting, cost, and use cases so buyers assign each material the right job in a pack system.
Buying Guide
Honeycomb Paper Buying Guide
A practical sourcing framework for honeycomb paper, panels, and protective structures from China: cell size, thickness, facing, compression trials, RFQ fields, and supplier checks.
Comparison
Honeycomb Paper vs Foam Packaging
Compare honeycomb paper and foam packaging on compression, shock, weight, recyclability, cost, and export fit—with a practical switchover test plan for buyers.
Buying Guide
Edge Board Buying Guide
Buyer guide for paper edge boards and corner protectors: leg widths (35/50/70 mm), thickness, paper grade, strapping trials, RFQ fields, and China sourcing checks.
Buying Guide
Industrial Protective Packaging Overview
Overview of paper-based industrial protective packaging systems: honeycomb panels, edge boards, corrugated outers, load spreaders, and how buyers engineer packs for heavy and high-value goods.
Machinery
5 articles
Product Knowledge
Boiler-Free Corrugated Board Production Line Explained
Technical buyer guide to boiler-free corrugated board production lines: how they differ from steam corrugators, adhesive and process dependencies, energy trade-offs, and evaluation criteria.
Buying Guide
Corrugated Board Production Line Buying Guide
Plan corrugating line capacity, board types, factory layout, energy source, and supplier support before buying corrugated board production equipment from China.
Product Knowledge
What Is a Single Facer Machine?
Learn what a single facer does on a corrugating line, how it forms flute profiles, which specifications buyers should compare, and how single-facer quality affects board strength.
Supplier Guide
How to Verify Carton Machinery Suppliers in China
Audit corrugating line, flexo printer, and folder-gluer suppliers in China: references, engineering docs, spare parts, commissioning scope, acceptance tests, and red flags.
Export Guide
How to Import Corrugating Equipment from China
Practical steps for importing corrugating lines and carton machinery from China: contracts, packing, ocean freight, customs, foundations, commissioning, and common delay traps.
Sourcing & Supplier Verification
3 articles
Buying Guide
How to Source Packaging Materials from China
An end-to-end buyer process for sourcing packaging materials from China: category mapping, RFQ design, supplier shortlists, samples, contracts, inspection, and first-order risk controls.
Supplier Guide
How to Verify Paper Packaging Factories
A practical verification playbook for paper packaging factories in China: capability checks, ownership of process steps, sample and audit evidence, document review, and red flags before awarding volume.
Supplier Guide
How to Evaluate Custom Packaging Suppliers in China
How to evaluate Chinese suppliers for custom cartons, paper bags, and gift boxes: design capability, tooling, print/finish control, sampling discipline, cost structure, and scale readiness.
Category Buying Guides
5 articles
Buying Guide
Custom Paper Bags from China: Sourcing Guide
Buyer guide to sourcing custom paper bags from China: paper grades, handles, print/finish, structure, MOQ, sampling, inspection, and RFQ fields that keep quotes comparable.
Buying Guide
Gift Boxes and Rigid Packaging Buyer Guide
How to buy rigid gift boxes and set-up packaging from China: board choice, wrap materials, magnets and hinges, inserts, print/finish, sampling stages, and cost drivers buyers should control.
Buying Guide
Grey Board and Paper Board Materials Guide
Product knowledge for grey board and paperboard used in rigid boxes and cartons: grades, thickness, flatness, moisture, sourcing specs, and buyer tests that prevent warp and weak structures.
Buying Guide
Paper Tubes and Canisters from China: Sourcing Guide
Sourcing guide for paper tubes, cans, and canister packaging from China: constructions, lids, barriers, print, tolerances, sampling, and RFQ controls for retail and industrial uses.
Buying Guide
EVA Foam and EPE Inserts for Inner Packaging
Buyer guide to EVA and EPE foam inserts for protective inner packaging: material choice, density, CNC/die-cut vs moulded options, fit tolerances, adhesives, sourcing RFQs, and common failure modes.
Industry Trends
1 articles
Packaging sourcing FAQ
What adhesive is used for corrugated boxes?
Water based starch or synthetic adhesives are commonly used, depending on bonding strength, production speed, and moisture requirements.
How strong is honeycomb cardboard?
Honeycomb cardboard can provide high compression strength at low weight, making it suitable for panels, cushioning, and export protection.
What packaging materials are recyclable?
Paper packaging, corrugated board, kraft paper, honeycomb paper, and many mono-material structures are commonly recyclable.
How to import packaging products from China?
Start with product specifications, request samples, verify factory capabilities, check certificates, confirm Incoterms, and inspect production before shipment.