Paper clip

Design and materials

The most familiar form is the Gem-style clip, a continuous loop of wire with two nearly parallel inner and outer loops. Variants alter the shape, number of loops, or add serrations and coatings to increase grip or prevent rust. Typical materials are spring steel wire, often nickel- or zinc-plated, and various plastics used either alone or as coatings. Some clips combine a metal core with colored plastic for identification or to protect delicate paper.

History and manufacture

Wire paper fasteners emerged in the late 19th and early 20th centuries as businesses required convenient ways to handle growing volumes of documents. Numerous designs were produced and some were patented; however, the common Gem form became widespread through practical manufacture rather than a single monopoly. Modern production involves drawing and straightening wire, automatic forming machines, and finishing steps such as plating or coating.

Uses and variants

Beyond temporarily binding a few sheets, paper clips are used as page markers, cable organizers, fasteners for small items such as receipts, and as improvised tools (for example, as pins to reset electronic devices). Variants include larger clips for thicker stacks, coated or decorative versions for color coding, and alternative fasteners such as binder clips or trombone clips for higher holding force.

Cultural and environmental notes

• Nonpermanence: Unlike staples, paper clips do not puncture paper and can be removed without obvious damage.
• Symbolism: Simple metal clips have been used as symbols of solidarity and resourcefulness in various cultural contexts.
• Recycling: Steel clips are recyclable with other ferrous scrap; plastic-coated or mixed materials should be separated when possible.

Small and often overlooked, the paper clip demonstrates how a straightforward mechanical idea meets everyday needs: modest materials and a bent shape deliver reliable, repeatable holding power for routine document handling.