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Glossary Of Terms

Common terms of custom cases and wearables

Whether you’re looking for a custom carrying case or just exploring the world of custom case manufacturing, you can review this glossary of terms to learn the terms and usage of all industry names and phrases

  • Advanced Bonding
    A process that uses adhesives, heat, or pressure to join different materials, such as plastics, textiles, or metals, without the need for stitching or mechanical fasteners. This technique is ideal for creating strong, seamless connections that enhance the durability and appearance of custom cases.  Learn more about this technology by visiting here
  • Ballistic Nylon
    Is a type of nylon that is specifically designed to be resistant to tearing, breaking, and abrasion. Despite its strength and durability, ballistic nylon is relatively lightweight. It is commonly used for military equipment such as protective vests, helmets, and backpacks. It is also used in the automotive industry for airbags and seat belts, and for industrial applications such as protective coverings for machinery and equipment. This term is typically used today to describe Nylon fabrics made from 1050D or higher yarns
  • Biocompatibility
    The ability of a material to interact with biological systems without causing harmful effects. This concept is critical in medical device design, implants, and any product that comes into direct contact with tissues or body fluids. A biocompatible material must not trigger an immune response, cause toxicity, or lead to allergic reactions. Biocompatibility standards ensure that materials are safe for long-term or short-term interaction with the human body, minimizing risks to patients during medical procedures or treatments. To evaluate biocompatibility, products undergo stringent testing based on international standards, see “ISO” in this glossary for further details on some of those standards.
  • Blow Molding
    Blow molding is a manufacturing process where heated plastic is inflated into a mold to create hollow, lightweight, and durable structures. Commonly used materials include polyethylene and polypropylene, making it ideal for cases that are both cost-effective and eco-friendly. Shell-Case’s custom blow molding cases offer enhanced protection for delicate equipment, combining durability with a lightweight design and flexibility in customization. These cases are particularly suitable for medical devices that require robust protection with quick development and production times. Learn more about blow molding by exploring our technologies page here.
  • Buckle Closure
    Buckles provide a tight and reliable closure, ensuring the contents of the case remain safely enclosed, even during rough handling or transport. It typically consists of two interlocking pieces that secure together to keep the case closed. Buckles can be made from various materials like plastic, metal, or composite materials and come in different styles, including side-release buckles, cam buckles, and adjustable buckles.
  • CAL65
    This refers to California’s Proposition 65, officially known as the “Safe Drinking Water and Toxic Enforcement Act of 1986”. This law requires businesses to provide warnings if their products contain any of nearly 1,000 chemicals listed under Proposition 65, the manufacturer must provide clear labeling to indicate that the product contains harmful chemicals.
  • Custom Carrying Case
    A case specifically designed and manufactured to fit, protect, and transport a particular item or set of items. To learn more about customization options click here
  • Denier
    The weight of a fabric yarn. One denier is equal to one gram of weight per 9,000 meters of length. Fabrics made of yarns with higher denier typically means thicker, stronger, and more durable fabrics.
  • Dustproof
    A case designed to prevent dust and small particles from entering. It protects your device from dust, dirt, and other small particles that could potentially damage it. These cases often feature sealed ports and covers to keep dust out while still allowing you to use your device.
  • Foam Inserts
    Custom-cut foam inserts to fit and protect specific items. Foam inserts can be produced from various foam types by cutting or machining. Shell-Case offers highly customizable foam inserts on a range of products. Visit  Our Work page to see our foam inserts in action
  • Hard Case
     A case with a rigid outer shell, typically made of materials such as aluminum, plastic, or wood. The level of rigidity is defined by the material, design and wall thickness. To learn more click
    here
  • Handles
    Handles for carrying cases are a critical design component that influences both functionality and user experience. There are many types of handles, including fixed, telescopic, and pivoting. The materials used to create handles range from plastic and metal to rubber and fabric. Handles should align with the case’s purpose, weight, and user comfort, and most importantly, be designed with proper ergonomics in mind. 
  • Injection Molding
    A manufacturing process where heated plastic is injected into a mold to form precise, complex shapes. It offers flexibility in design, allowing for intricate details and smooth finishes. This process works with materials like ABS, polycarbonate, and polypropylene, making it ideal for creating durable, lightweight cases. Shell-Case’s custom injection molded cases are tailored to specific needs, providing protective solutions for medical devices and other sensitive equipment with high levels of precision and consistency. Visit our technologies page on injection molding to learn more. 
  • IP level ( Ingress Protection)
    Is a rating system used to define the degree of protection a device has against dust and water ingress. It is represented by the letters “IP” followed by two digits:
    The first digit: Indicates the level of protection against solid objects, such as dust and dirt. The second digit indicates the level of protection against water ingress.

  • ISO 10993
    An international standard that provides guidelines for the biological evaluation of medical devices. It outlines a series of tests and assessments that ensure the safety of materials used in devices that come into contact with the human body. The standard is crucial for determining the biocompatibility of materials, ensuring that they don’t cause adverse biological reactions such as toxicity, irritation, or an immune response.  Click here to explore all ISO standards.

  • ISO 10993-10
    A standard within the ISO 10993 series, which addresses the biological evaluation of medical devices. ISO 10993-10 focuses on tests for irritation and skin sensitization to evaluate the potential for a medical device or its materials to cause allergic reactions or irritations when in contact with human skin or other tissues. This standard is essential for companies involved in medical devices to ensure biocompatibility before the product is approved for clinical use.  Click here to read the ISO breakdown publication of this standard.
  • ISO 10993-5
    A standard within the ISO 10993 series that outlines procedures for in vitro cytotoxicity testing to determine if materials used in medical devices are toxic to cells. It provides methods like direct contact, extract tests, and agar diffusion, where cells are exposed to the material or its extracts. The standard evaluates cell viability, morphology, and proliferation to measure any harmful effects. Based on the results, materials are classified as non-cytotoxic to severely cytotoxic, ensuring that medical devices are safe for contact with human tissues and don’t cause cellular damage. This is crucial for regulatory compliance and product safety. Click here to see the ISO documentation.
  • ISO 13485
    Is an international standard that specifies requirements for a quality management system (QMS) for medical device development. It is designed to help organizations ensure that their medical devices are safe, effective, and meet the needs of their intended users. To view Shell-Case certifications click here. To get more information on ISO13485 go to ISO online platform .
  • Fabric
    Fabric made by interlooping individual yarns together. This process creates a typically stretchy, soft, and comfortable fabric.
    Knitted fabrics are highly elastic and can be easily stretched and returned to their original shape. Knitted fabrics can be quite durable, especially when made from high-quality yarns.
    Knitted fabrics can be made from a wide variety of materials, including natural fibers (like cotton, wool, and cashmere) and synthetic fibers (like acrylic, nylon, and polyester).
  • Lid Support
    A mechanism to hold the lid open. The support mechanism must be robust enough to handle the weight and size of the lid. By carefully selecting and implementing the right lid support mechanism, custom carrying cases can offer enhanced functionality and protection, catering specifically to the needs of the user and the intended use of the case.
  • Metals
    Strong, durable materials that offer exceptional protection and resistance to environmental conditions. Common metals used in case manufacturing, such as aluminum, steel, and magnesium, provide high-end protection for sensitive medical devices. These materials are known for their strength and resilience, making them ideal for cases requiring robust security and longevity. Metals can be customized to enhance aesthetic appeal. Learn more about metals by downloading our Shell-Case Guide to Materials in Case Manufacturing.
  • Military
    Cases for weapons, ammunition, and other military equipment.
  • Music
    Cases for musical equipment including speakers and amplification devices ensure that your valuable equipment remains secure and easy to carry.
  • Neoprene (Chloroprene Rubber)
    A synthetic rubber known for its flexibility, durability, and resistance to various environmental factors such as water, heat, and chemicals. It is widely used in the manufacturing of custom carrying cases due to its shock-absorbing properties and protective nature. Its inherent water resistance helps in creating cases for environments prone to moisture or wet conditions. Neoprene can withstand a wide range of temperatures, making it suitable for both hot and cold environments. Its elasticity allows cases to stretch slightly, providing a snug fit for various objects.
  • Non-woven fabric
    is made by bonding together fibers using various methods, such as heat, chemicals, or mechanical means. This process creates a fabric that is typically lighter, softer, and more breathable than traditional woven or knitted fabrics.
    Nonwoven fabrics do not have a regular grid-like structure and can be made to be strong or weak depending on the bonding method used. Many nonwoven fabrics are soft and comfortable to wear, Nonwoven fabrics can be made from a wide variety of materials, including natural fibers (like cotton and wool) and synthetic fibers (like polyester and polypropylene).
  • Optics
    Cases for cameras, lenses, and accessories, designed to protect the most sensitive and delicate equipment from the wide range of threats including impact and dust. Visit our page to see what we offer.
  • Padding
    Interior padding to cushion and protect contents. Padding in a custom carrying case refers to the material or design features used to protect the contents of the case from shocks, impacts, or vibrations. It is a crucial component which ensures the safety and security of sensitive or fragile items during transport. The type and thickness of padding depend on the specific requirements of the case and the items it is designed to carry. There are multiple options available for padding and the selection of the right padding is done based on the level of protection needed for each specific device.
  • PFAS(Per- and Polyfluoroalkyl Substances)
    A large group of human-made chemicals widely used in manufacturing due to their resistance to heat, water, and oil. They are commonly found in products like water-repellent fabrics, non-stick cookware, and firefighting foam. PFAS have earned the nickname “forever chemicals” because they don’t break down in the environment, leading to widespread contamination in water and soil, as well as being found in the issues of the human body. Understanding PFAS and their impact on your production will be crucial for ensuring compliance and sustainability in the long term.
  • Polycarbonate (PC)
    A versatile, high-performance thermoplastic known for its strength, impact resistance, and transparency. Polycarbonate is used in various applications, including eyewear lenses, electronic components, automotive parts, and construction materials. It is lightweight, durable, easy-to-clean and can be easily molded, making it suitable for both industrial and consumer products. Polycarbonate also offers excellent resistance to heat and UV radiation, making it ideal for outdoor and high-temperature environments. In the carrying case industry, polycarbonate is used to ensure a light-weight and super robust performance. Some grades can also withstand autoclaving.
  • Polymers
    Synthetic or natural materials made up of long chains of molecules, offering high impact resistance, durability, and flexibility. Commonly used polymers in case manufacturing include polycarbonate, ABS, and polypropylene, providing lightweight yet strong protection for medical devices, with the added benefit of being easily customizable in terms of color, texture, and finish. Learn more about polymers by downloading our Shell-Case Guide to Materials in Case Manufacturing.
  • Protective Case
    A case designed to shield its contents from damage, such as shock, vibration, or environmental factors.
  • REACH regulation
    Stands for Registration, Evaluation, Authorization, and Restriction of Chemicals. It’s a European Union regulation aimed at protecting human health and the environment from risks posed by chemicals. It also promotes alternative methods for assessing chemical safety to reduce animal testing. Key aspects of REACH include:

    Registration: Companies that manufacture or import chemicals must register these substances with the European Chemicals Agency (ECHA).
    Evaluation: The ECHA, along with EU member states, evaluates the information submitted by companies to assess potential risks and ensure compliance with the regulation.
    Authorization: Certain substances of very high concern (SVHC), require authorization before they can be used.
    Restriction: The regulation can restrict or ban certain dangerous substances.
  • RoHS regulation (Restriction of Hazardous Substances Directive)
    is a European Union directive designed to reduce environmental and health risks associated with the use of toxic substances in electronics, particularly during disposal or recycling processes. The directive restricts the use of defined substances in electrical and electronic equipment and applies to a wide range of electrical and electronic products. Manufacturers, importers, and distributors of electrical and electronic equipment must ensure their products comply with RoHS standards, and non-compliance can result in penalties, including the removal of products from the EU market. To have more information on RoHS click     here
  • Rubber
    A flexible, elastic material that can be derived from natural or synthetic sources. Natural rubber is obtained from the latex of rubber trees, while synthetic rubber is made from petrochemicals. Rubber is known for its ability to stretch and return to its original shape, making it ideal for applications requiring elasticity and durability. Rubber elements can be over-molded onto hard plastic injected parts to add additional protection or to allow soft griping in handle areas. It is widely used in products like tires, seals, gaskets, hoses, and footwear. Rubber also offers resistance to water, heat, and chemicals, making it suitable for industrial, automotive, and consumer applications.
  • Sewing
    The process of joining fabrics or flexible materials like polyester, nylon, or leather using stitches. It allows for precise, durable construction, and is ideal for creating cases that are lightweight, flexible, and customizable with added features like zippers, straps, and padding. Shell-Case’s custom sewn cases offer versatility and comfort, designed to protect devices while maintaining ease of use. Learn more about the technology of sewing and our custom sewn cases here.
  • Shipping case
    Shipping case is designed to protect items during transport and handling. These cases come in various styles and sizes depending on what you need to ship. When selecting a shipping case, consider the following:size and fit, protection needs and transport conditions.
  • Shockproof
    A case that is designed to protect a device from impacts and drops. These cases typically have features like reinforced corners, shock-absorbing materials, and rugged construction to absorb and disperse the force of a drop or impact.
  • Silicone
    A synthetic material made from silicon, oxygen, carbon, and hydrogen known for its flexibility, durability, and resistance to extreme temperatures. Silicone is frequently used to create additional custom “skin”  layer for electronic and medical devices for its protective, aesthetic and cleanability properties. Silicone’s soft and shock-absorbent qualities make it ideal for protecting fragile items from drops or bumps. With the ability to withstand both high and low temperatures, silicone is suitable for cases used in extreme environments. Silicone is also naturally water-resistant, making it perfect for cases used in wet or humid conditions. It is non-toxic and hypoallergenic, making it a popular material for cases designed to hold sensitive or personal items, such as medical devices.
  • Soft Case
    A case with a flexible outer shell, often made of fabric or neoprene. Click here to view examples of soft cases.
  • Sports
    Cases for sports equipment, such as golf clubs, fishing rods, or hockey sticks that protect your products while ensuring ease of use, carry and access. 
  • Straps
    Straps for carrying cases are a crucial design element, affecting both functionality and user experience. There are various types of straps, such as shoulder straps, crossbody straps, and adjustable or removable straps. The materials used for straps are highly versatile, including options like nylon, leather, polyester, and neoprene, chosen based on durability, comfort, and aesthetic needs. Straps should complement the case’s purpose, weight, and carrying style, and most importantly, be designed to ensure comfort and ease of use. 
  • Textile
    Flexible materials composed of natural or synthetic fibers, woven, knitted, or bonded together. Textiles like polyester, nylon, and cotton are used in case manufacturing because they are flexible and lightweight, making them ideal for soft cases, wearables, and protective layers. Learn more about textiles by downloading our Shell-Case Guide to Materials in Case Manufacturing.
  • Thermoforming / molded  EVA
    EVA (Ethylene Vinyl Acetate) is a versatile and durable plastic polymer commonly used in thermoforming processes to create lightweight, shock-absorbing cases. Known for its flexibility, resistance to impact, and ability to be customized, EVA is ideal for producing protective cases that safeguard sensitive medical, electronic, and optical equipment. Its ability to be molded and branded makes it a popular choice for industries requiring custom protective solutions. Learn more about EVA by reading this blog or exploring our EVA technologies page here. 
  • Thermoplastic Polyurethane (TPU)
    A flexible, durable polymer known for its elasticity, abrasion resistance, and transparency. TPU is commonly used in a wide range of applications, including footwear, smartphone cases, automotive parts, and medical devices. It combines the properties of both rubber and plastic, offering excellent flexibility at low temperatures, resistance to oil and grease, and high tensile strength. TPU can be easily processed using various methods such as injection molding and 3D printing, making it a popular material in both industrial and consumer products. TPU can also be used for laminated textiles. The TPU layer, when added to textiles, will reinforce the fabric by adding a sealed wipeable layer with extreme protection performance.
  • Vacuum Forming
    A manufacturing process where heated plastic sheets are molded by vacuum pressure over a custom mold, creating lightweight, durable, and easy-to-clean cases. This method offers great flexibility in shapes, colors, and customization options, making it ideal for medical and technical equipment cases. Shell-Case’s vacuum forming cases are designed for maximum protection, offering customization for both outer and inner components, ensuring a balance of functionality and aesthetics. Learn more about the technology of vacuum forming by visiting our technologies page here.
  • Waterproof
    A case that is designed to be completely impervious to water.  Provides a higher level of protection than water resistant cases and is suitable for prolonged or deeper submersion in water. 
  • Water-Repellent (WR) coating
    Substances or materials that have the ability to resist the penetration of water. This property is achieved by creating a barrier on the surface that repels water molecules. 
  • Water-Resistant
    A case designed to withstand exposure to liquids and moisture and are good for protection against minor water exposure.
    Water-resistant case seals or gaskets made from  various materials designed to keep liquids out and protect your device such as: silicone, TPU (Thermoplastic Polyurethane), rubber, neoprene and more. 
  • Woven fabric
    A textile formed by interlacing two or more sets of threads at right angles to each other. The process of weaving creates a strong, durable fabric. Woven fabrics have a distinct grid-like pattern that provides excellent strength and durability. The woven fabrics tend to wrinkle less than knitted fabrics.
    and often hold their shape well, even after repeated washing or use.
    Woven fabrics can be made from a wide variety of materials, including natural fibers (like cotton, wool, and linen) and synthetic fibers (like polyester, nylon, and rayon).
  • Zipper Closure
    A zipper closure is a fastening mechanism that uses interlocking metal or plastic teeth or coils moved by a sliding pull tab to open and close an enclosure. It is one of the most common closure types for carrying cases, bags, and luggage because they balance practicality and cost-effectiveness, making them ideal for a wide variety of custom carrying case designs.

Custom Solutions

WHAT WE’VE DONE

From protection to performance, from regulation to life-saving scenarios, medical devices present numerous challenges when creating a carrying case.
Medical
Consumer electronics is a field in constant evolution. Products are becoming smarter, with an emphasis on user experience, but also more delicate and complex.
Electronics
With traditional sponge case interiors creating particles of dust upon their natural disintegration, there is a real risk of harm to sensitive optical devices.
Optical
Measuring device manufacturers rightfully creates a reputation with utmost accuracy. A custom carrying case is not only the first line of defence; it is the first touchpoint with the customer.
Hardware & Measurement
Whether presenting to a prospective client, there is nothing more important than first impressions.
Sales & Demo

Our Solutions

IN ANY CASE...

Custom wearable housing for a body-worn medical device by Shell-Case

Wearables

A wide range of innovative wearable solutions ergonomically designed to fit the user’s anatomy. Lightweight, durable and custom-built for any medical device.
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Off-the-Shelf-Hybrid-300-range

Hybrid 300

The most advanced lightweight & stylish carrying cases. The HYBRID 300 can be easily customized for any application. Multiple options for branding.
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Technical diagram of Shell-Case Hybrid 500 case layers

Hybrid 500

A lightweight, ultra-durable wheeled carrying case, the Hybrid 500 series provides a wide-range of semi-customized options with Interchangeable modular dividers, precut foam, or a custom foam insert.
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