Cord locks are small yet indispensable components used in a wide range of applications, from clothing and sportswear to bags, lanyards, and outdoor gear. As a cord lock supplier, I often get asked about the materials these essential items are made of. In this blog post, I'll delve into the various materials used in cord lock manufacturing, highlighting their characteristics, advantages, and typical applications.
Plastic Cord Locks
Plastic is one of the most commonly used materials for cord locks due to its versatility, affordability, and ease of production. There are several types of plastics used in cord lock manufacturing, each with its own unique properties.
Polypropylene (PP)
Polypropylene is a lightweight and durable thermoplastic polymer. It has excellent chemical resistance, which makes it suitable for use in various environments. PP cord locks are often used in casual clothing, such as sweatshirts and drawstring pants. They are also commonly found in children's clothing due to their non - toxic nature. The low cost of polypropylene allows for mass production, making it an economical choice for manufacturers.
Polycarbonate (PC)
Polycarbonate is a strong and impact - resistant plastic. It has high transparency, which can be an aesthetic advantage in some applications. PC cord locks are used in high - end products where durability and a sleek appearance are required. For example, they can be found in premium outdoor gear, like backpacks and climbing equipment. The high strength of polycarbonate ensures that the cord locks can withstand heavy use and rough handling.
Acrylonitrile Butadiene Styrene (ABS)
ABS is a tough and rigid plastic with good heat resistance. It combines the strength of acrylonitrile, the toughness of butadiene, and the processability of styrene. ABS cord locks are widely used in consumer products, including lanyards and fashion accessories. They can be easily molded into various shapes and colors, providing designers with a high degree of flexibility.
Plastic cord locks offer many benefits. They are lightweight, which is important in applications where weight is a concern, such as in sportswear. They are also corrosion - resistant, ensuring a long lifespan even in damp or humid conditions. Additionally, plastic can be easily colored during the manufacturing process, allowing for a wide range of color options to match different product designs. If you're interested in plastic cord locks, our Adjustable Lanyard String Cord Lock Stopper is a great example of a high - quality plastic cord lock product.
Metal Cord Locks
Metal cord locks are known for their strength, durability, and aesthetic appeal. Different metals are used in cord lock production, each with distinct characteristics.
Zinc Alloy
Zinc alloy is a popular choice for metal cord locks. It is relatively inexpensive and easy to cast into complex shapes. Zinc alloy cord locks have good surface finish and can be plated with different metals, such as nickel or chrome, to enhance their appearance and corrosion resistance. Zinc Alloy Spring Cord Lock Stopper is a product that showcases the advantages of zinc alloy. These cord locks are commonly used in mid - to high - end clothing, bags, and leather goods. The strength of zinc alloy ensures that the cord locks can hold up well under tension.
Stainless Steel
Stainless steel is a corrosion - resistant metal that offers high strength and durability. It is often used in applications where hygiene and long - term use are important. Stainless steel cord locks are found in medical equipment, outdoor sports gear, and marine applications. They can withstand exposure to water, salt, and chemicals without rusting or corroding. The sleek and modern appearance of stainless steel also makes it a popular choice for fashion - conscious products.
Brass
Brass is an alloy of copper and zinc. It has a warm, golden color and good malleability. Brass cord locks are commonly used in traditional and high - end products, such as leather belts and luxury bags. They have a classic and elegant appearance that adds a touch of sophistication to the items they are used on. Brass is also relatively easy to machine and polish, allowing for a smooth and high - quality finish.
Metal cord locks provide a high level of security and durability. They can withstand heavy loads and repeated use without breaking or deforming. However, they are generally heavier and more expensive than plastic cord locks.
Other Materials
In addition to plastic and metal, there are other materials used in cord lock manufacturing.
Wood
Wooden cord locks are a natural and eco - friendly option. They have a warm and organic look that is popular in handmade and artisanal products. Wooden cord locks are often used in rustic - style clothing, like bohemian dresses and handmade bags. They add a unique and natural touch to the overall design. However, wood is more prone to damage from moisture and insects compared to other materials.
Ceramic
Ceramic cord locks are a less common but highly decorative option. They can be made in various colors and textures, offering a unique aesthetic. Ceramic cord locks are used in high - end fashion accessories and jewelry. The brittle nature of ceramic means that they are more suitable for light - duty applications where the risk of impact is low.
Choosing the Right Material
When choosing the material for a cord lock, several factors need to be considered.
Application
The intended use of the cord lock is a crucial factor. For example, if the cord lock will be used in a sportswear application, a lightweight and durable plastic like polypropylene or ABS may be the best choice. In contrast, for heavy - duty outdoor gear, a metal cord lock made of stainless steel or zinc alloy would be more appropriate.
Environment
The environment in which the cord lock will be used also matters. If the product will be exposed to water, salt, or chemicals, a corrosion - resistant material like stainless steel or plastic should be selected. In a dry and clean environment, a wider range of materials can be considered.
Aesthetics
The appearance of the cord lock is important, especially in consumer products. The color, finish, and texture of the material can significantly impact the overall look of the item. For a modern and sleek look, stainless steel or plastic with a smooth finish may be preferred. For a more traditional or rustic look, wood or brass could be the choice.
Cost
Cost is always a consideration in manufacturing. Plastic cord locks are generally more affordable than metal ones, making them a popular choice for mass - produced products. However, for high - end products where quality and durability are paramount, the higher cost of metal or other premium materials may be justified.
As a cord lock supplier, we offer a wide range of cord locks made from different materials to meet the diverse needs of our customers. Whether you need a lightweight plastic cord lock for your sportswear line or a high - end metal cord lock for your luxury bag collection, we have the right solution for you. Our Drawstring Cord Lock with Nickel - Free Plating is a great example of our commitment to providing high - quality and environmentally friendly products.
If you're interested in purchasing cord locks for your business, we'd love to have a conversation with you. We can discuss your specific requirements, including the material, design, and quantity. Our team of experts is ready to assist you in finding the perfect cord locks for your products. Contact us today to start the procurement process and take your products to the next level.


References
- "Plastics: Properties and Applications" by Rosato, David V., et al.
- "Metals Handbook: Properties and Selection" published by ASM International.
- "Materials Science and Engineering: An Introduction" by Callister, William D., Jr. and Rethwisch, David G.




