Hydrogel structure
AssigneeCompose Element Limited
InventorTsu-Tai Lin
Life of this patent
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Abstract
A hydrogel structure which has: (a) a one way penetrating polyurethane film layer; (b) a hydrophobic pressure sensitive adhesive layer; (c) a multi-directional elastic meltblown nonwoven; (d) an interpenetrating polymer network; and (e) a hydrogel; wherein the meltblown nonwoven and the hydrogel are laminated by UV curing to form the interpenetrating polymer network, part of fibers of the meltblown nonwoven are exposed and fit stably with the pressure sensitive adhesive film. The hydrogel structure can make dressings multi-directional elastic for multiple traumas. The hydrogel structure can provide an environment suitable for wound healing, shorten the healing time, antiseptic and reduce the chances of being infected for the wound dressing.
Claims14
A hydrogel structure comprising:
- (a) a one way penetrating polyurethane film layer;
- (b) a hydrophobic pressure sensitive adhesive layer;
- (c) a multi-directional elastic meltblown nonwoven layer;
- (d) an interpenetrating polymer network;
- and
- (e) a hydrogel layer;
- wherein four layers, (a), (b), (c) and (e), are arranged in a sequential order, and the interpenetrating polymer network is formed by interpenetrating part of the meltblown nonwoven layer into the hydrogel layer and part of the hydrogel layer into the meltblown nonwoven layer by UV curing, thereby the remaining meltblown nonwoven layer being laminated with the pressure sensitive adhesive layer such that the (b), (c) and (e) layers being bound together by the interpenetrating polymer network.
Dependencies are inferred from the claim text.