Introduction

WMEG11 is produced by unique process in which carbon black is pre-dispersed, then compounded with the basic resin through plastication.

It is widely used in modified compounding and injection applications. Suitable for PP and PE materials.

It features low dosage, high blackness, good brightness, excellent heat resistance, outstanding dispersibility and tinting power, and minimal impact on the physical properties of the final product.

What separates WMEG11 from general-purpose black masterbatch is what it does not bring into your formulation.

Modern appliance and automotive interior specifications no longer judge a material on colour only ,  they judge what it releases.

Bisphenol A (BPA) has moved from a watch list to a regulated substance in the EU, and odour and volatile emissions are now pass or fail criteria in any enclosed application,

from a dishwasher tub to a car cabin parked in the sun.

WMEG11 was formulated against both constraints at once : bisphenol A is compliancing with the regulation in its formulation,

and a low-volatility system that keeps odour and emissions down in the finished part.

Why "BPA-free" is a material specification, not a marketing line

What the EU actually requires

Regulation (EU) 2024/3190 entered into force on Jan. 2025 and bans bisphenol A, its salts and other hazardous bisphenols or bisphenol derivatives in food contact materials across the EU.

It covers plastics, varnishes and coatings, printing inks, adhesives, rubbers, silicones and ion-exchange resins , the whole chain, from raw material through intermediate products to the finished article.

Two details matter for appliance manufacturers:

1) It reaches parts that never touch food directly

If an external component can come into contact with food under normal use, or if there is any risk of migration, it falls inside the scope.

2) The detection limit is 1 µg/kg (0.001 mg/kg), and a Declaration of Conformity has to travel with the material through every link of the supply chain except retail.

Transition rules are running out: most single-use and reusable final food contact articles may no longer be placed on the EU market from July 2026,

and repeat-use professional food production equipment from January 2028.

The regulation also pre-emptively controls the wider bisphenol family , bisphenol S, bisphenol AF, tetrabromobisphenol A, phenolphthalein and others are named,

and any bisphenol later classified as CMR 1A/1B or as an endocrine disruptor falls under the same ban.

Bisphenol A is separately on the REACH Candidate List as a substance of very high concern.

Where BPA actually comes from in a black masterbatch

Carbon black does not contain bisphenol A.

The risk sits in everything around it , carrier resin grades, dispersants, waxes, antioxidants, release and processing aids ,

and cross-contamination on production lines that also run bisphenol-based formulations.

That is why BPA-free claim has to be built from the raw material specification inward, not bolted on as test at the end.

Jolink operates in  dedicated clean workshop for food-grade products and for grades that must meet stringent bisphenol A requirements.

WMEG11 is produced on that line, from a bisphenol-free additive system over virgin polyethylene carrier.

Low volatility and low odour : what it means inside an enclosed space

Odour and VOC are not the same test

Engineers often use the two words interchangeably, but they are measured differently and fail for different reasons.

Appliance programmes usually work to brand-specific odour panels and their own emission limits rather than to the automotive standards, but the mechanism behind failure is identical.

The standards for odors vary depending on the specific substances and the testing methods used. As a result, the test results will also different. Please be aware of this.

Key features

Bisphenol-free formulation

Bisphenol A complianced with the EU regulation , produced on dedicated clean line.

This is what allows the appliance brand to keep its BPA-free commitment intact all the way down to a black masterbatch.

Low volatility and low odour

Virgin carrier and purified additive system keep the masterbatch's own contribution to odour and emissions to a minimum : the point of the exercise in sealed housing or closed vehicle cabin.

High jetness at a low let-down ratio

0.8–2.0% in injection, 1.0–4.0% in compounding.

Low dosage means less dilution of the base resin, which is why the mechanical profile of the finished part stays essentially where you set it.

Excellent dispersion, ≤ Level 2.5

Pre-dispersed carbon black, then compounded through plastication.

The practical results are no black spots, no streaks, no screen-pack pressure build-up, and no "crystal point" defects on  visible surface.

Brightness and surface finish suitable for visible parts

Appliance shells are A-surfaces. Gloss and colour depth have to hold across different tools, machines and production batches , not just in the first shot.

Heat resistance in the barrel

Stable through the normal PP or PE processing window, no blooming, no colour shift, no decomposition.

Moisture ≤ 0.1%

Low enough that in most PP and PE processes WMEG11 can go straight from the masterbatch packing bag into the hopper without predrying, and low enough to avoid silver streaks and splay on the part.

Minimal impact on physical properties

Because jetness is delivered through dispersion quality rather than sheer carbon loading, the compound retains more of its original impact and tensile behaviour.

Batch-to-batch consistency

Carbon black dispersion and moisture are checked in Jolink's advanced laboratory before dispatch. 

Technical Parameter 

Applications

Home appliance casings and interior components

WMEG11 is formulated for PP and PE based compounds, which covers large share of small appliance housings, structural parts and internal components.

Appliances sit inside the scope of RoHS, so the pigment package has to be clean on heavy metals as well as bisphenol-free.

Kitchen appliances in particular are now scrutinised under the same BPA logic that applies to food contact materials, because their parts sit next to food and are handled constantly.

What appliance manufacturers typically need from a black masterbatch, in order of how often it causes a problem: 

No smell in a sealed housing. A dishwasher or a coffee machine has no ventilation. Anything the plastic gives off stays inside it.

Colour consistency across tools and plants. Housing moulded on two machines in two countries still has to match on the shelf.

Cost control at low dosage. 0.8–2.0% in injection at 33% carbon content keeps the colouring step from eating into margin.

Surface quality on visible parts. Gloss, brightness and freedom from spots and streaks.

For appliance parts moulded in ABS, PC/ABS or high-gloss PS, Jolink's matching grade is WM16H (UN2014), ,which is formulated for those resins and for high-gloss injection.

WMEG11 is the PP/PE answer to the same requirement.

Automotive interior parts

Automotive interior approval runs on emission and odour testing before it runs on anything else.

A material that smells, or that fogs the windscreen, is rejected even when every mechanical test passes.

The relevant framework:

• VDA 270 — odour, rated on a 6-point scale by a trained panel after defined conditioning

• VDA 277 / PV 3341 — total organic carbon in the headspace

• VDA 278 — separate VOC and FOG values by thermal desorption GC-MS

• DIN 75201 / PV 3015 — fogging

• VDA 275 — formaldehyde, which the VOC methods do not capture

On top of that sit the OEM specifications your customer works to, which set their own limits inside these methods.

WMEG11 targets the PP-based side of the interior m door panel carriers, pillar trims, HVAC ducting, seat structure components,

console substrates and similar parts where colour has to survive heat ageing and sunlight without drifting.

Jolink's automotive interior programme includes a dedicated odour control team, and our automotive interior solution,

covers low-VOC, heat-resistant and wear-resistant masterbatch for dashboards, door panels and related components.

Packing and Storage 

25kg/bag, PE or Composite Paper bag

Stored under dry, enclosed and cool conditions, protected from UV rays and/or direct sunlight. After used, the opened packaging must be resealed properly to prevent the product from absorbing moisture, which could affect its performance.

Note 

The technical results are typical values and are provided for customer reference only. They are not to be regarded as a guarantee of minimum or maximum quality specifications.

FAQ

Does WMEG11 contain bisphenol A?

WMEG11 is produced from a bisphenol-free additive system on a virgin polyethylene carrier, on a dedicated clean line for food-grade and BPA-sensitive products. Bisphenol A compliance to the Regulations.

What is the difference between low odour and low VOC?

They are measured by different methods and fail for different reasons.

Odour (VDA 270) is  sensory rating by a trained panel. VOC (VDA 277, VDA 278) is the quantity of organic compounds the material releases, measured by headspace or thermal desorption GC.

A material can be low in VOC and still smell, and vice versa.

WMEG11 is formulated to keep both low, because automotives and appliance brands test both.

Can WMEG11 be used with ABS or PC/ABS?

WMEG11 carries polyethylene carrier and is designed for PP and PE based compounds.

For ABS, PC/ABS and high-gloss PS parts, the matching Jolink grade is WM16H (UN2014).

What let-down ratio should I use?

8–2.0% for injection moulding and 1.0–4.0% for modified compounding, depending on the jetness and opacity your part requires.

Contact us with your target part specification and we will confirm a starting point.

Do I need to dry WMEG11 before use?

No. Moisture is controlled to ≤ 0.1%, so it can normally go straight from the bag into the hopper in PP and PE processes. Your base resin's own drying requirements still apply.

Can you supply test reports and customise the grade?

Yes. Technical Data Sheets, Safety Data Sheets, per-batch Certificates of Analysis and compliance test reports are available, and OEM customisation of carbon content, carrier and additive package is accepted.