Injection molds for promotional materials are of great significance in the marketing and advertising industry as they enable the creation of eye - catching and effective promotional items.

One of the most common promotional materials made using injection molds is custom - designed keychains. The injection mold for a keychain must be able to create a shape that is not only visually appealing but also durable. It can incorporate the brand logo, mascot, or a unique design related to the product or service being promoted. The injection mold may use materials like plastic or rubber with different colors and finishes. For example, a keychain with a shiny, metallic - looking finish can attract more attention. The connection point for the keyring within the injection - molded keychain needs to be strong to ensure that it can hold keys without breaking. The injection mold may also include features such as 3D textures or raised elements to make the keychain more interesting.

Another popular promotional item produced with injection molds is promotional pens. The injection mold for the pen body needs to be able to create a comfortable and ergonomic shape for writing. The pen can be branded with the company's name, logo, or slogan. The injection mold may incorporate a design that allows for easy insertion of the ink cartridge. The cap of the pen, whether it's a click - on or screw - on type, also requires an accurate injection mold. The cap may have a decorative element or a logo on it. In some cases, the injection mold for the pen may include a rubberized grip area to improve the user's writing experience.

Promotional stress balls are also made using injection molds. The injection mold for a stress ball must be able to create a soft and squeezable structure. The stress ball can be molded into various shapes related to the brand, such as a product replica or a character. The injection mold may use materials that are soft and resilient, such as foam - filled plastics. The surface of the stress ball may have a smooth or textured finish, and the injection mold needs to be able to reproduce these details accurately. The injection mold may also ensure that the stress ball maintains its shape and elasticity over time.

In addition, promotional badges and buttons are produced with injection molds. The injection mold for these items needs to be able to create a circular or custom - shaped badge with a pin - back or clip - on attachment. The badge can display the brand logo, message, or an image. The injection mold may incorporate a clear, protective layer over the design to keep it looking fresh.  injection molds for promotional materials need to balance creativity, durability, and brand representation to make the promotional items stand out.