elastic cord

Types of elastic cords

Elastic cords are flexible materials that can be stretched and will return to their original shape. They are classified into various categories based on their materials.

• Natural rubber elastic cord

  Natural rubber cords are the most common in the market. They are very flexible and stretch up to 200% of their original length. They are used in garments, sports equipment, and arts and crafts. They are durable and have good resistance to tearing and abrasion but may degrade when exposed to sunlight for long periods.

• Synthetic rubber elastic cord

  Synthetic rubber cords are made from artificial rubber materials. They include neoprene, silicone, and polyurethane. They have higher tensile strength than natural rubber and can stretch between 150% and 300%. They are used for marine, automotive, and medical applications. They have excellent abrasion and chemical resistance and are more durable than natural rubber cords. They also do not degrade when exposed to sunlight.

• Plastic elastic cord

  Plastic cords are made from elastic plastics such as polypropylene and polyethylene. They can stretch between 50% and 100% of their original length. They are used for packaging, securing, and bundling items. They are lightweight, cheap, and resistant to moisture and chemicals. However, they have low heat resistance and may degrade at high temperatures.

• Polyester elastic cord

  Polyester cords are made from polyester fibers. They are one of the most versatile cords, stretching up to 100% of their original length. They are used in clothing, footwear, and outdoor gear. They are known for their excellent UV and abrasion resistance and are very durable. They also have good heat resistance and do not degrade or melt at high temperatures.

• Silicone elastic cord

  Silicone cords are made from silicone rubber. They are highly flexible and can stretch up to 300% of their original length. They are used for medical, electrical, and household applications. They have a very low reaction to heat and chemicals and are not affected by high or low temperatures. They are suitable for outdoor and indoor applications.

• Metallic elastic cords

  Metallic cords are made from steel, copper, and aluminum. They have high tensile strength and can stretch up to 50% of their original length. They are used for automotive, aerospace, and industrial applications. They have excellent abrasion and heat resistance and are very durable. They also have good electrical conductivity.

• Hybrid elastic cords

  Hybrid cords combine two or more materials. They are made from natural rubber and polyester fibers. They can stretch up to 200% of their original length. They are used for medical, electrical, and household applications. They have excellent UV and abrasion resistance and are very durable. They also have good heat and chemical resistance.

Design of elastic cords

Elastic cords are available in a variety of designs to suit different applications. Here are some of the key design features and considerations:

• Materials

  The material used in elastic cord design affects its strength, durability, and stretch properties. Common materials include:

  • Rubber: Natural or synthetic rubber provides excellent stretch and recovery. It is commonly used in low-stress applications like household items.
  • Latex: Latex cords offer high tensile strength and elongation. They are used in applications requiring strong and durable elastic properties, such as in bungee cords.
  • Polyester: Polyester elastic cords offer good UV resistance and durability. They are suitable for outdoor applications and garment manufacturing.
  • Nylon: Nylon cords provide high strength and resistance to abrasion. They are used in heavy-duty applications like parachutes and cargo nets.
  • Spandex: Also known as Lycra or elastane, spandex is a synthetic fiber that stretches up to five times its original length and quickly returns to its original shape. It is often blended with other fibers to provide elasticity and shape retention in garments like activewear, swimwear, and undergarments.
  • Silicone: Silicone elastic cords offer high-temperature resistance and flexibility. They are used in applications requiring heat resistance, such as in automotive and electrical components.

• Construction

  The construction of an elastic cord affects its flexibility and stretch. Common constructions include:

  • Monofilament: A single, solid strand of elastic material. It offers consistent stretch and is used in applications requiring a uniform elastic property.
  • Multifilament: Multiple strands or filaments twisted together. This construction provides enhanced flexibility and a softer feel. It is used in applications requiring a more comfortable stretch.
  • Braided: Elastic fibers braided together to form a cord. Braided constructions offer high strength and resistance to deformation. They are used in heavy-duty applications like marine and automotive.

• Diameter and Length

  The diameter and length of an elastic cord impact its load-bearing capacity and suitability for specific applications. Larger diameters are suitable for heavy loads, while smaller diameters work well in lightweight applications. The length of the cord can be customized or pre-cut to fit specific requirements.

• Color and Finish

  The color and finish of an elastic cord can be functional and aesthetic. Bright colors can enhance visibility, while neutral colors blend with different materials. Finishes may include coatings for UV resistance or texture for improved grip.

  Elastic cords are designed to provide reliable stretch and recovery characteristics for various applications. By understanding their design features, users can select the right elastic cord for their specific needs, ensuring optimal performance and durability.

Wearing/Matching suggestions of elastic cords

Elastic cords are used in various applications, including clothing, accessories, and home textiles, and they can be styled and matched in numerous ways. Here are some wearing and matching suggestions:

• Wearing Suggestions

  Wearing an elastic cord can vary depending on its application. For clothing, like tops and bottoms, elastic cords provide comfort and flexibility. When choosing a cord for these garments, select a cord that has a good recovery property. This means the cord can stretch to fit the body and retract to its original length without sagging over time. For activewear, look for a polyester or nylon elastic cord. These materials can hold moisture, which may be caused by sweat during physical activities, and also have UV resistance. Additionally, they should be durable and maintain their elasticity over time.

• Matching Suggestions

  Matching an elastic cord to fabric requires consideration of the fabric type and its intended use. For woven fabrics like cotton or linen, a 1/4 inch or 3/8 inch cord works well. This is because the cord is not too bulky and provides a fit without causing the fabric to gather excessively. For knit fabrics like jersey or spandex, a thinner cord such as 1/8 inch is ideal. This is due to its ability to give a snug fit, which is often required for garments made from knit fabrics. When pairing with heavier fabrics like canvas or denim, a thicker cord of 1/2 inch or more is recommended.

Q&A

Q1: Can elastic cords be used for outdoor applications?

A1: Yes, some elastic cords are suitable for outdoor use. Look for cords with UV-resistant coatings or those made from materials like nylon or polypropylene, which offer better resistance to sunlight and weather. They are ideal for outdoor tarps, covers, or bungee applications.

Q2: How does one terminate or join elastic cords?

A2: Elastic cords can be terminated or joined using various methods, including crimping, knotting, or using specialized cord locks and end caps. The method depends on the application and the type of cord being used. For bungee cords, hooks or eyelets are often used instead of permanent joints.

Q3: Are there color options for elastic cords?

A3: Yes, elastic cords are available in various colors, including black, white, and other bright colors. The color choice may depend on the application, such as visibility requirements for safety or aesthetic purposes in apparel and accessories.

Q4: Can elastic cords be used in clothing repairs?

A4: Yes, elastic cords are often used in clothing repairs, such as replacing worn-out elastic in waistbands, cuffs, or collars. They can provide adjustable and stretchable solutions for a comfortable fit in various garments.