Writing Instrument Nibs

POREX® Nibs: If it's not Porex, it's not Genuine.

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Since 1961, POREX® Nibs have been the smart choice for leading companies who want to get to market efficiently and need a highly reproducible and reliable supplier that operates on a global scale.

Porex is the original producer of porous plastic nibs to the writing instrument industry. Today, we continue to set the performance standard for writing nibs supplied for highlighters and children's coloring markers.

POREX Nibs can be custom-designed using special material formulations to optimize marker system requirements. And, the highly reproducible Porex manufacturing processes ensure that the billionth nib produced will be the same as the first.

POREX® eNib™

Our newest nib product, the POREX® eNib™, is designed for use with whiteboard inks. It can also be formulated to wick pigmented, solvent-based inks such as inks for artists' markers and permanent markers.

The patented eNib™ allows for a consistent flow of ink for the life of the marker. In dry erase inks, the unique material helps provide a quiet writing experience, reducing the irritating screech commonly seen with fiber products. The nib also holds its shape with less deformation at the end of life as compared to other nibs.

POREX® nibs

POREX® Nibs are designed for a broad array of writing instrument applications such as highlighters and children’s coloring markers. Molded nibs provide a smooth writing feel and the strength and shape required, either with or without a vent groove. Vented nibs allow for ease of assembly, while ensuring the functionality of the capillary system without ink leakage.

Engineered to meet customer performance specifications, POREX® Nibs are available in a wide selection of standard wedge, bullet, and conical designs. They can also be custom designed to meet customers' specific needs, as well as with special material formulations to optimize capillary systems.

Writing Instrument Reservoirs

Porex's ink reservoir redefines ink delivery dependability, offering the highest performance in extreme conditions – even high-altitude flights. The capillary transfer expertise and porous material technologies have evolved into a comprehensive line of ink reservoirs used by market leaders across the planet.

Specially formulated bonded-fiber blends and 100% fiber-to-film sealed wraps are just the beginning – nearly any aspect of our writing instrument reservoirs is fully customizable.

Materials: PET Fibers, Polyester, Polypropylene
Wraps: Extruded Polypropylene, Extruded Nylon, Extruded Polyester, Film or Non-Woven, Customer Exclusive, or Unwrapped

  • Reservoirs with indicators
  • Angle cuts
  • Custom wrappers
  • Venting grooves
  • Venting grooves with wraps
  • Cross sections


Printer Systems

Porex's printer system components are used by nearly every major manufacturer of desktop printers. Our 99.97% quality yield offers virtually nonexistent failure rates.

Porex's reservoirs and release wicks often work as a two-component system for highly efficient ink release at high resolutions. Engineered at the microscopic level for purity and regulated capillary action, our storage and release components eliminate pigment adulteration and deliver consistent and controlled retention and release of ink.

Ink overflow components add another dimension of printer cartridge efficiency – using super-absorbent wicking materials to capture ink leakage and release captured ink back into the delivery system.

Our engineers excel at improving the performance of inkjet and laser printer cartridges. For a finely tuned ink delivery system, contact us today.    


Stamping Pads

Porex's stamping pads offer dynamic ink transfer performance at an economical price.

Our fibers and foams provide uniform ink flow for sharp details and consistent impressions with a variety of inks. We take the value further with capillary designs for resisting dry-out and extending time between re-inking.

  • Dye-based
  • Pigment
  • Permanent
  • Archival
  • Distress and embossing
  • Viscous liquids like paints and glues