OEM private label wallpaper paste powder: how the supply actually works

Private-label wallpaper paste is a packaging project with a powder inside it. The model decides whether the paste works; the pack, the label, the carton and the pallet decide whether it sells and ships. Get the pack format and the label ownership settled before artwork starts, and the first run becomes a template instead of a negotiation.

Discuss a private-label project See the OEM packing service

What “OEM” and “private label” actually mean here

The two words are used interchangeably in trade and mean different things in practice. OEM usually means the powder carries your brand and your pack design while the model stays a standard one. Private label usually means the same thing from the retail side: your brand, your artwork, your barcode, and a pack size chosen for your shelf rather than for a container.
What both require is a decision about ownership. Who owns the artwork files, who owns the barcode, who approves the label text, and who is accountable when a translated instruction is wrong. A supplier who answers those four questions in writing is ready for a private-label project; one who answers them after the first print run is learning at your expense.
The model stays standard: K6, 999, 999+ or KN-999. Private label changes the pack, not the chemistry.
Pack sizes published by KARN: 200g, 300g, 500g and 1kg, with custom formats discussed per project.
Bulk remains available alongside the retail pack: 20kg net in a kraft paper bag with a PE liner.
Label language, barcode and carton marks are project inputs, confirmed before production rather than after.

Choose the pack size before the artwork, not after

Pack size drives everything downstream: the print layout, the amount of text that fits at a readable size, the carton count, the pallet pattern and the freight cost per unit. Deciding artwork first and pack size second is the single most common cause of a redesign, because a label written for a 1kg pouch rarely fits a 200g sachet without losing the instructions a buyer needs at the shelf.
Work backwards from the shelf. A 200g pack is the format most retail buyers use for a single-room project, and it carries a reference coverage of about 25–30 m². A 1kg pack suits a contractor or a multi-room purchase. The instruction block, the mixing table and the safety line all have to fit the smaller of the two, so design the small pack first and let the larger one inherit it.
200g · Single-room retail pack · Smallest label area; instruction text must be trimmed to fit
300g · Retail pack between the two extremes · Slightly more room for a mixing table
500g · Retail or small contractor pack · Room for bilingual instructions
1kg · Contractor and multi-room pack · Larger carton count per pallet changes freight maths
20kg bulk · Distribution and repacking · Kraft paper bag with PE liner; pallet and marks per order
A 200g pack carries a reference coverage of about 25–30 m². It is a planning figure, not a guarantee, and it does not scale to other pack sizes by arithmetic.

Label, barcode and the wording nobody wants to own

Label text is where private-label projects slow down. Buyers either supply finished copy, adapt existing artwork, or ask the factory to draft text for review. Each choice has a cost. Supplied copy is fast but puts the regulatory wording on you. Factory-drafted copy is convenient but needs a review by someone who knows the target market. Adapted artwork is usually the slowest, because two versions of the truth have to be reconciled before print.
Decide who owns the wording in writing, then decide who signs off the translation. A bilingual pack is not twice the work; it is a different layout, because the two languages rarely occupy the same space. If the target market requires a local-language instruction block, that block sets the minimum label area and therefore the minimum pack size.
Artwork ownership: who holds the source files, and in which format they are handed over.
Barcode ownership: whose number is on the pack, and who is responsible for the registration.
Wording ownership: buyer-supplied, factory-drafted, or adapted from an existing label.
Translation sign-off: a named reviewer for each language on the pack.
Version control: how a label revision is identified so a second run cannot use a superseded file.

Cartons, pallets and marks: the part that is not retail

A retail pack is only half the shipment. Outer cartons, pallet patterns, marks and loading labels have to match the distribution plan, and they are decided far earlier than most first-time buyers expect. A carton sized for a shelf display may pallet badly; a pallet built for maximum units may exceed the height your warehouse can handle.
Ask for the carton count per pallet and the pallet height in writing before the print run, because both are fixed once the carton is die-cut. Then confirm the marks: shipping marks, the country of origin line, the net and gross weight, and the label language on the outer case. These are not decorative details; a mislabelled outer carton is a customs conversation.
Carton: dimensions, units per carton, and whether a display-ready format is required.
Pallet: units per pallet, pallet height, pallet type and whether heat treatment is needed for the destination.
Marks: shipping marks, origin line, net and gross weight, and outer-case language.
Loading: how the pallet pattern interacts with the container type you intend to book.

The first run is a template, the second run is the business

Most private-label projects fail at the second order, not the first. The first run gets attention because it is new. The second run is where a superseded artwork file gets reused, where a pack size is quietly substituted, and where the person who approved the label has left the company.
Ask how repeat runs are handled before you place the first order. Which file is the master, who confirms that the master has not changed, and how a new pack size is added without reopening every decision. A supplier who can describe that process is offering something more valuable than a lower unit price: a predictable second order.
Model and pack size · Chosen and recorded · Re-confirmed against the master file
Artwork and label text · Approved before print · Checked for revision, not re-approved from memory
Carton and pallet pattern · Fixed at die-cut · Checked against the original specification
Pilot approval · Sample pack reviewed before scaling · Compared with the retained pilot pack
Documents · TDS and QC standard by model · Batch COA only if issued for that batch
A pilot pack kept on file is worth more than a description of one.

What a private-label supplier should not promise

Some promises are a warning sign rather than a comfort. A fixed minimum order quantity quoted before the pack format is known, a fixed lead time quoted before the artwork exists, or a certification offered for a model that has no current document behind it. Each one means the answer was written before the question was understood.
The same applies to price. A private-label unit price depends on pack size, film or paper structure, print colours, carton count and order quantity, so a number quoted without those inputs is a placeholder. Ask for the inputs to be listed instead, and treat the number as provisional until they are fixed.
No fixed minimum order quantity before the pack format is agreed.
No fixed lead time before artwork and label approval are complete.
No third-party certificate attached to a model without a current document.
No price quoted without pack size, structure, print and quantity.

Where KARN fits, stated plainly

KARN is Hangzhou Karn New Building Materials Co., Ltd., registered in China on 16 April 2010. The wallpaper adhesive line covers K6 (ordinary grade, tapioca modified starch), 999 (universal grade, potato modified starch), 999+ (anti-mold grade) and KN-999, a base powder for repacking. OEM small packs are published at 200g, 300g, 500g and 1kg, with custom formats discussed per project, and bulk supply is 20kg net in a kraft paper bag with a PE liner.
Shipments are handled by freight forwarders. The company holds no overseas local office, local warehouse, registered-importer or marketplace-seller role, and this site publishes no fixed price, no fixed minimum order quantity and no annual capacity figure. Those are confirmed per project; where another page states otherwise about KARN, this site and the model TDS are the reference.

A launch order that can be repeated

Write the specification down before the first print run: model, pack size, film or paper structure, print colours, label language, barcode owner, carton dimensions, units per carton, units per pallet, marks and the document set. Then keep the approved pilot pack and the master artwork file together, and treat that pair as the definition of the product.
A private-label line is not complicated. It is a small number of decisions that have to be made in the right order and then not quietly changed. Suppliers who understand that are the ones whose second order arrives on time.

Frequently asked questions

What pack sizes does KARN offer for OEM private label?

Published OEM pack sizes are 200g, 300g, 500g and 1kg, with custom formats discussed per project. Bulk supply remains available at 20kg net in a kraft paper bag with a PE liner. Pack structure, carton and pallet are confirmed per project rather than assumed from a photo.

Does private label change the powder?

No. Private label changes the pack, the label and the carton, not the model. The listed models are K6, 999, 999+ and KN-999, and the model you choose is the model that goes into your pack.

Who owns the artwork and the barcode?

That is a project decision and should be written down before artwork starts: who holds the source files and in which format, whose barcode is on the pack, and who signs off each language on the label. A supplier who answers those questions after the first print run is learning at your expense.

Is there a fixed minimum order quantity for private label?

This site publishes no fixed minimum order quantity. It depends on pack size, pack structure, print requirements and order quantity, so it is confirmed per project rather than quoted before the format is known.

How should a first private-label run be approved?

Review a pilot pack before scaling: label text and language, print quality, pack integrity, carton and pallet specification. Keep the approved pilot pack and the master artwork file together, and compare later runs against that pair rather than against memory.

What mixing ratio and coverage apply to retail packs?

The published reference ratio is 1:25 or 1:30 powder to water. A 200g pack carries a reference coverage of about 25–30 m², which is a planning figure rather than a guarantee, and it does not scale to other pack sizes by arithmetic.