There is no single "best" wallpaper adhesive type. The right choice depends on application method, storage conditions, and procurement model. Powder suits long-distance shipping and bulk repacking; ready-mixed paste is open-and-use but heavy to ship; clear gel serves special substrates. This page compares the three types and lists the published parameters of Hangzhou KARN powder models. Price, MOQ, and lead time are quoted per project.
Three product types compared
| Type | Strengths | Limits | Typical use |
|---|---|---|---|
| Powder | Small shipping volume, long shelf life, adjustable viscosity | Requires on-site mixing and rest time | 20kg bulk, OEM packs, long-distance export |
| Ready-mixed paste | Open-and-use, fast application | Heavy to ship, shorter shelf life | Local retail, small areas |
| Clear gel | Suits special substrates and transparent needs | Higher cost, narrow scope | Special wallcoverings and project areas |
Published powder model parameters
Hangzhou KARN publishes reference viscosity measured with a 5% solution, NDJ-8, No. 4 rotor, and 6 rpm:
- K6 Ordinary Grade: tapioca modified starch, 38,000 ±10% mPa·s.
- 999 Universal Grade: potato modified starch, 60,000 ±10% mPa·s.
- 999+ Anti-mold Grade: potato modified starch, approx. 60,000 ±10% mPa·s.
- KN-999: measured 40,141 mPa·s (NDJ-8S), DS 0.3-0.4, positioned as a dry adhesive base for repacking, not a standalone CMS ingredient.
These are the company's published reference values, not third-party test conclusions. Data measured at different concentration, instrument, rotor, or speed cannot be compared directly.
Choose by substrate and application
- Standard paper-backed wallcoverings: universal powder, mixed per the TDS.
- Heavy vinyl or non-woven: choose a higher-viscosity model and run a sample test.
- Humid environments: review storage conditions and the anti-mold grade name, without treating the name as a guarantee of on-site mold resistance.
- Large project areas: prioritize batch consistency and a controlled on-site mixing process.
Sample testing advice
Run a small-area test with the destination market's water, the actual wallcovering, and the real application process. Record mixing ratio, rest time, open time, and adhesion after 24 hours. A sample result does not automatically guarantee later batches, but it surfaces mismatches early.
Next step
Review the product pages, the technical documents page, and the mixing ratio guide, or send the factory your substrate, application method, and destination market for a model recommendation.