Pen-type Injection Molds - Fanstar Equips Global Stationery Brands with High-gloss Mirror Finish And Multi-hole Precision Technology

In the high-end writing tools market, appearance consistency, assembly accuracy and production efficiency directly determine a brand's competitiveness. As a professional manufacturer deeply involved in the export market, Fanstar, with over a decade of experience, has become a core supplier of pen injection molds for several internationally renowned stationery brands. It has successfully delivered high-gloss, transparent, two-color and metallic texture pen injection molds with 8 to 64 cavities, helping customers achieve the intelligent manufacturing goals of "zero adjustment, fully automatic, and high yield".

The truly high-end pen injection molds go far beyond mere shape replication. Fanstar uses imported S136 or NAK80 mirror steel, with cavity polishing reaching SPI-A1 level (Ra ≤ 0.01μm), ensuring a high-gloss surface without flow marks or pin marks; through precise simulation of filling and cooling by Moldflow, the thermal flow channel layout is optimized, achieving a multi-chamber balance error of less than 3%; for micro structures such as the pressing mechanism, spring chamber, pen clip latch, etc., micro-mill EDM and slow wire cutting are adopted, with tolerance controlled within ±0.005mm; all molds support fully automatic picking by a mechanical hand, eliminating the need for post-processing, significantly reducing labor costs.

The typical product range includes ballpoint pens, marker pens, high-end pen casings and multi-functional office pens. The single-module lifespan exceeds one million times.

In addition to pen-type injection molds, Fanstar also possesses AS9100 and IATF 16949 dual certification in fields such as PEEK aerospace components and IP67 electrical and mechanical enclosure molds. They provide English DFM, FAI reports, and mold trial video services.

Choosing Fanstar means choosing a partner for pen injection molds that combines aesthetic understanding with engineering precision. With our precise manufacturing, each pen embodies the brand value. Please feel free to contact us to obtain the exclusive development plan and sample model display.