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Custom Non-Woven Manufacturing of Non-Allergenic Dermal Contact Cast Wrap/Medical Padding with Wicking Control

Non-allergenic, Dermal contact, Wicking control, Cast Wrap Medical Padding
Non-allergenic, Dermal contact, Wicking control, Cast Wrap Medical Padding
  Cast Wrapping
Cast Wrapping
   

A Medical Company approached Delaware Valley Corporation with a request to develop a dermal (skin) contact product that they hoped would revolutionize the process of making Arm and Leg splints and casts. All their previous development efforts had been unsuccessful. Delaware Valley seemed their last hope.

The theory required a material to be easier and quicker to use than the existing plaster reinforced casting materials that had been in use for many years. The fabric to be developed would permit the creation of splints or casts, for the stabilization of broken bones, in situ on the injured limb, with no need for pre-mixing of materials.

Our task was to create a non-woven fabric that would serve multiple functions. It would be a non-allergenic cushioning material to be placed next to the skin without creating irritation or itching, while functioning as part of the reinforcement media for the cast. The Needle Punch fabric was also to serve as the carrier of the active ingredients of the casting polymer, thus also serving as the outer packaging of the finished composite.

The fabric had to be hydrophobic (water repellant), soft and non-allergenic, compatible with an epoxy based polymer, stretchable within tight deformation parameters, lofty but with specific tensile strengths. One key factor in the development was the ability of the Needle Punched fabric to control the wicking time of water as it was applied to the fabric for activation of the polymer casting material. These required properties had not been achievable using typical woven and knit fabrics.

Delaware Valley met all the requirements after a six month development characterized by applying theory to practice and empirically testing in trial runs. The results speak for themselves as our felt was found to be the only viable candidate for the job, and we continue to produce it 25 years later. It is part of the now universally accepted splinting material used around the world.

Delaware Valley has been able to develop fabrics that solve specific needs and to work hand in hand with potential customers to rapidly solve their requirements for functional fabrics.


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Custom Non-Allergenic Dermal Contact Cast Wrap/Medical Padding with Wicking Control Project Highlights:

Capabilities Applied/Processes (Needle Punching, Structuring, Die Cutting, Laminating, etc...): Needle Punching, Precision fiber structuring, Critical fiber selection
Tightest Tolerance: Weight, Tensile Strength, Elongation, Fiber denier
Material Type: Polypropylene
Material Thickness: 0.125 inches
Product Length: 112 yard rolls
Product Width: 54 inches
Temperature Range: Melting point above 320 degrees F (160 deg. C)
Color: White
Material Finish (Flat Punch, Velour, Pattern, Coarse,  etc...) Flat punch
Resistances (Oil, Water, Grease, etc...): NA
Packaging: Plastic bagged roll with paper tube core
Special Features: Wicking control, no water solubility, no reactivity to polymer, non-allergenic
Secondary Operations Applied: Cleaned of impurities
Industry for Use: Medical
Volume: 750,000 square yards per year
Delivery Time: Per order
Delivery Location: International
Standards Met (Customer Supplied Print, ISO, ASTM, etc...): ASTM D1777, ASTM D5034, ASTM D5587, ASTM D3776, ISO 9001:2008
Product Name: Medical pad
Project Scope: See details above
Development Work (Prototype, Tensile Test, Porosity Test, Abrasion Test, etc...) Needling Density versus Wick-ability Testing
Drawing Type Accepted: NA
Tooling Cost: NA
Shipping Cost NA
Product Description: Flat punch, non-woven
Product Image File Name: Cast Wrap

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