PP lining and TPU blown film help wound dressings reduce costs and increase efficiency

Covestro has developed several material solutions for cost-effective manufacturing of wound dressings and wearable devices
.
It is worth noting that a solution using a polypropylene (PP) inner liner combined with a thermoplastic polyurethane (TPU) blown film can meet the high requirements for functionality and design freedom in today's medical and wearable products
.
It also greatly reduces dust generation
.
These dusts often impact processors' clean production environments for medical products
.

The production of wound dressings and plasters, as well as medical wearables, requires multi-step manufacturing
.
Various coating and cutting processes are available to convert products for different intended functions
.
For example, the cushion material typically has an undulating cut (S-cut) to allow the clinician to quickly remove the carrier when applying the dressing
.
In other cases, the outer edge of the carrier is not coated with adhesive, so it can be easily lifted to remove it (finger lift is sufficient)
.

　　Rigid Polypropylene Liner Film
　　The PP liner is relatively stiff and has sufficient strength to open gently without damaging the underlying layer, or when transferring an adhesive layer to a product
.
At the same time, they are flexible enough to optimally cover curved body parts such as hands, ankles and shoulders
.
PP carriers can also be combined with multilayer TPU films,
etc.

　　Blown film technology enables high-speed production and increased efficiency
.
Blown-molded TPU films have a variety of surface qualities from silky to ultra-matte on PP backing
.
Available in a variety of colors to suit different skin tones
.
Covestro has a range of TPU films and polyethylene (PE) liners, and is developing paper carriers to offer its customers a large selection of solutions
.

　　According to Covestro, the Platilon® XM series of TPU extra matt blown films are particularly suitable for wound treatment as well as other medical applications
.
These materials are breathable, soft, feel like a second skin, and have a low coefficient of friction due to the matte finish
.
In addition, these materials do not reflect light easily, which means they can be used as incision dressings in bright operating rooms, minimizing the distraction of the surgeon's work
.