Selecting materials for a medical adhesive construction involves more than choosing an adhesive. The substrate, backing material, wear requirements, moisture management, flexibility, thickness, and intended application all influence which materials to evaluate.
Three options commonly considered for medical applications are breathable film, medical grade foam, and transfer adhesives. Each offers different characteristics that may support wearable devices, wound care products, diagnostics, and other skin-contact medical applications.
Rather than identifying one material as the best choice for every application, medical device manufacturers can evaluate these options based on the finished product’s specific performance and material requirements.
DermaMed assists customers with identifying adhesive materials and constructions aligned with application-specific requirements.
Understanding Breathable Films
A breathable film can be considered for medical applications where moisture vapor transmission, flexibility, and skin-contact performance are important requirements.
DermaMed’s breathable films include adhesive-coated materials used across applications such as wearable medical devices, wound dressings, device component bonding, and protection of wearable devices. These materials allow moisture vapor to pass through while providing a barrier against external contaminants.
Depending on the intended application, breathable films may also provide the flexibility and conformability required for areas of the body that move during normal activity.
When evaluating a breathable film, manufacturers may consider factors such as:
- Moisture vapor transmission
- Wear duration
- Flexibility and conformability
- Adhesive requirements
- Skin contact
- Intended medical application
These considerations help determine whether a breathable film construction aligns with the requirements of a particular device or medical product.
When Medical Grade Foam May Be Considered
Medical foams provide a different set of material characteristics.
Medical grade foam materials are commonly evaluated for applications requiring cushioning, conformability, flexibility, or a specific material thickness. DermaMed’s foam tape medical solutions support wearable devices, wound care products, and other skin-contact medical applications.
DermaMed offers adhesive-backed closed-cell foam materials. Closed-cell medical-grade foam can provide cushioning and is available in different colors, densities, and thicknesses.
When evaluating foam materials, manufacturers may consider:
- Cushioning requirements
- Material thickness
- Flexibility
- Conformability
- Wear duration
- Adhesion requirements
- Intended application
A medical-grade foam construction may therefore be evaluated differently from a thin breathable film depending on the physical requirements of the finished product.
Understanding Transfer Adhesives
Transfer adhesives provide another option for medical adhesive constructions.
Unlike a film or foam backing, a transfer adhesive is an unsupported adhesive layer that can be combined with other materials. DermaMed’s transfer adhesives can be used with films, foams, and fabrics, providing manufacturers with options for creating application-specific material constructions.
Transfer adhesives can support medical applications requiring skin-friendly adhesive performance, flexibility, breathability, and longer wear durations depending on the intended use. They may also be used for medical device mounting, construction, foam bonding, surgical applications, and wound care.
This versatility means transfer adhesives can be evaluated as one component of a broader adhesive construction rather than as a standalone backing material.
How Do These Materials Differ?
The appropriate material depends on what the medical application needs the complete construction to accomplish.
A breathable film may be evaluated when moisture vapor transmission, flexibility, and conformability are important. Medical-grade foam may be considered when cushioning, thickness, fluid management, or additional physical protection is required. Transfer adhesives can provide an adhesive layer that can be combined with films, foams, fabrics, and other substrates.
In some applications, these material categories may even be used together rather than viewed as competing alternatives. DermaMed’s laminating capabilities support layered constructions combining materials such as foams, wovens, non-wovens, polyurethanes, and adhesives to address application-specific requirements.
This is why material selection begins with the intended application rather than simply choosing a product category.
Application Requirements Should Guide Material Selection
Before selecting a breathable film, foam tape medical construction, or transfer adhesive, manufacturers may need to evaluate several application-specific factors.
These can include:
- How long the material will remain in use
- Whether the construction will contact the skin
- Required flexibility and conformability
- Moisture management
- Cushioning or thickness requirements
- Adhesion requirements
- Device configuration
- Other manufacturing requirements
For example, a wearable medical device intended to remain on the skin for an extended period may place greater emphasis on flexibility, moisture management, wear duration, and skin compatibility.
A wound care application may introduce different requirements related to fluid management, cushioning, breathability, or barrier properties.
The material construction should therefore be evaluated around the intended use of the finished medical product.
Material Selection May Involve More Than One Component
Medical adhesive constructions frequently involve multiple materials working together.
A foam may require an adhesive appropriate for the intended substrate or skin-contact application. A breathable film may be combined with an adhesive selected around wear and moisture-management requirements. A transfer adhesive may be paired with a film, foam, or fabric to create a specific construction.
DermaMed’s product portfolio includes breathable films, foams, transfer adhesives, wovens and non-wovens, polyester films, polyethylene films, laminates, and other materials that can be evaluated for medical adhesive applications.
This gives medical device manufacturers the ability to evaluate the complete adhesive construction rather than focusing on a single component independently.
Testing Supports the Evaluation Process
Material selection can also involve testing different constructions against application-specific requirements.
DermaMed’s testing capabilities include adhesion, release, tack, shear, loop, Polyken Probe, MVTR testing, and accelerated aging.
Testing can provide additional information when manufacturers are comparing adhesive materials, substrates, and constructions before moving toward production.
For a breathable film, this might include evaluating breathability and adhesive characteristics. For a medical grade foam, manufacturers may need to consider adhesion along with thickness, flexibility, and the physical characteristics of the foam. Transfer adhesive constructions may require evaluation with the substrate or other materials with which they will ultimately be combined.
The goal is to evaluate the complete construction against the requirements of the intended application.
Choosing the Appropriate Material for Your Application
There is no single material appropriate for every medical adhesive application.
Breathable films, medical foams, and transfer adhesives each provide different material characteristics. The appropriate option depends on factors such as wear duration, moisture management, cushioning, flexibility, thickness, adhesion requirements, and the configuration of the finished medical device.
DermaMed assists customers with identifying adhesive materials and constructions based on these application-specific requirements. Through material selection, adhesive coating, laminating, slitting, engineering support, and testing, DermaMed can support manufacturers as they evaluate materials for wearable devices, wound care, diagnostics, and other medical applications.
For broader information regarding medical devices, manufacturers can also reference the U.S. Food & Drug Administration’s Medical Devices resources.
Need Help Evaluating Materials for a Medical Adhesive Application?
Whether your application requires a breathable film, medical grade foam, transfer adhesive, or a construction combining multiple materials, DermaMed can assist with identifying options aligned with your application-specific requirements.
F.A.Q.’s
What is a breathable film used for in medical applications?
Breathable films can be used in wearable medical devices, wound dressings, medical device component bonding, and other applications requiring moisture vapor transmission, flexibility, conformability, and skin-contact performance.
What is medical grade foam used for?
Medical grade foam can be used in applications requiring cushioning, flexibility, conformability, fluid management, or specific material thicknesses. These materials are commonly evaluated for wearable devices, wound care products, and other skin-contact medical applications.
What is a transfer adhesive?
A transfer adhesive is an adhesive layer that can be combined with materials such as films, foams, and fabrics. Transfer adhesives can support medical device construction, foam bonding, wound care, surgical applications, and other medical adhesive applications.
How do manufacturers choose between breathable film and medical grade foam?
The appropriate material depends on the application requirements. Manufacturers may consider factors including moisture management, cushioning, thickness, flexibility, conformability, wear duration, adhesion requirements, and the intended use of the finished product.
Can transfer adhesives be combined with medical films or foams?
Yes. Transfer adhesives can be used with films, foams, fabrics, and other materials to create adhesive constructions aligned with application-specific requirements.