Perforated binder for laminated wound dressing
A binder layer for a laminated wound dressing is brought into contact with a sheet coated with a pattern-coated adhesive sheet. As the binder layer is in contact with the pattern-coated adhesive sheet, a series of closed-loop cuts are made in the binder layer. The closed-loop cuts are made in such a way that the material enclosed by each closed loop is substantially physically separated from the remainder of the binder layer. Then the binder layer is moved away from the pattern-coated adhesive sheet, so that the binder layer and the pattern-coated adhesive sheet are no longer in contact. When the binder layer and the pattern-coated adhesive sheet are moved apart, the material enclosed in the closed-loop cuts—i.e., the cut waste fragments—are retained on the pattern-coated adhesive sheet, ensuring that the binder layer includes a series of cleared perforations.
1. A method of fabricating a laminated dressing comprising:
bringing a binder layer into contact with a pattern-coated adhesive sheet;
making a series of closed-loop cuts in the binder layer; and
moving the binder layer away from the pattern-coated adhesive sheet, such that the binder layer and the pattern-coated adhesive sheet are no longer in contact, such that a material enclosed in the closed-loop cuts is retained on the pattern-coated adhesive sheet, whereby the binder layer includes a series of cleared perforations.
2. The method of claim 1 wherein said binder layer is fabricated from a polyester or polyamide material.
3. The method of claim 1 , further comprising positioning the binder layer between a lower layer and an upper layer.
4. The method of claim 3 , wherein the lower layer comprises a fiber material configured to directly contact a patient's skin and a wound area.
5. The method of claim 3 , wherein the upper layer comprises a foam material configured to absorb exudate and moisture.
6. The method of claim 3 , wherein the lower layer comprises a fiber material configured to directly contact a patient's skin and a wound area and the upper layer comprises a foam material configured to absorb exudate and moisture.
7. The method of claim 3 , further comprising forming the lower layer from a non-woven, spunlaced polymer fabric.
8. The method of claim 3 , further comprising forming the lower layer from polyethylene fibers.
9. The method of claim 8 , further comprising coating at least some of the polyethylene fibers with silicone.
10. The method of claim 3 , further comprising forming the lower layer from regenerated cellulose fiber material.
11. The method of claim 10 , further comprising including silicone in at least some of the regenerated cellulose fiber material.
12. The method of claim 3 , wherein said upper layer is fabricated from polyurethane.
13. The method of claim 3 , further comprising including an antimicrobial agent in the upper layer.
14. The method of claim 13 , wherein the antimicrobial agent is inorganic.
15. The method of claim 13 wherein said antimicrobial agent is metal-based.