Strip for the delivery of an oral care active and methods for applying oral care actives
A strip of material for the delivery of an oral care active is disclosed. The strip of material includes a structural elastic-like film backing layer including a strainable network having a first region and a second region formed of substantially the same material composition, the first region providing a first, elastic-like resistive force to an applied axial elongation, and the second region providing a second distinctive resistive force to further applied axial elongation, thereby providing at least two stages of resistive forces in use; and an oral care composition disposed on the film, the oral care composition including an oral care active.
1. A stretchable tooth whitening treatment product, comprising:
a) a stretchable elastic-like film backing layer, having a transverse axis and having an average thickness of from about 0.1 mil to about 5.0 mil, the film including a blend of:
i from about 50% to about 90%, by weight of the film, of high-density polyethylene; and
ii from about 10% to about 50%, by weight of the film, of linear low-density polyethylene; and
b) an oral care composition disposed on the film, the oral care composition including:
i from about 50% to about 99.9%, by weight of the composition, of an adhesive polymer; and
ii from about 0.1% to about 50%, by weight of the composition, of a teeth whitening active;
said film backing layer including a strainable network having a first region and a second region, the first region providing a first, elastic-like resistive force to an applied axial elongation, and the second region providing a second distinctive resistive force to further applied axial elongation, thereby providing at least two stages of resistive forces in use; and
wherein said film has a flexural stiffness of less than 4 grams/cm and a Poisson lateral contraction less than 0.8 when said film is subjected to about 25% elongation, or a Poisson lateral contraction less than about 1.0 when subjected to about 50% elongation;
wherein said second region includes a plurality of raised rib-like elements, said elements having a major axis which is substantially parallel to said transverse axis.
2. A stretchable tooth whitening treatment product according to claim 1 wherein the teeth whitening active is selected from the group consisting of peroxides, metal chlorites, perborates, percarbonates, peroxyacids, and combination thereof.
3. A stretchable tooth whitening treatment product according to claim 1 wherein the teeth whitening active is selected from hydrogen peroxide, calcium peroxide, carbamide peroxide, and mixtures thereof.
4. A stretchable tooth whitening treatment product according to claim 1 wherein the teeth whitening composition comprises an active selected from the group consisting of peroxides, metal chlorites, perborates, percarbonates, peroxyacids, and combinations there; and wherein said composition comprises carboxypolymethylene as an adhesive polymer.