Coaster
A coaster or trivet includes a liquid impervious base and a liquid absorbent gel disposed on the base. The gel may comprise a hydrogel including a plurality of gel layers. Each gel layer is a different adhesive property with a first gel layer having a relatively high peel strength for contacting the base and a second gel layer having a relatively low peel strength for removably contacting a container.
1. A drink coaster comprising:
a liquid impervious base; and
a liquid absorbent gel, or hydrogel, disposed on the base, the gel including a plurality of gel layers, each gel layer having a different adhesive property, a bottom gel layer having a relating high peel strength for contacting the base and a top gel layer having a relatively low peel strength for removably contacting a container.
2. A coaster according to claim 1 wherein the relatively low peel strength of a top gel layer is sufficient to enable the base to maintain adherence to said container upon elevation of said container from a supporting surface.
3. The coaster according to claim 1 wherein the relatively high peel strength of the bottom gel layer is sufficient to enable separation of the container from the base with the gel remaining adhered thereto.
4. A drink coaster kit comprising:
a liquid impervious base; and
a plurality of liquid absorbent gels, each disposable on the base, each gel including a plurality of gel layers, each gel layer having a different adhesive property, a bottom gel layer having a relatively high peel strength for contacting the base and a top gel layer having a relatively low peel strength for removably contacting a container.
5. The coaster kit according to claim 4 wherein the relatively low peel strength of each top gel layer is sufficient to enable the base to maintain adherence to said container upon elevation of said container from a supporting surface.
6. The coaster kit according to claim 4 wherein the relatively high peel strength of each bottom gel layer is sufficient to enable separation of the container from the base with the gel remaining adhered thereto.
7. The coaster kit according to claim 4 further comprises an absorbent material layer laminated between the top and bottom gel layers.
8. The coaster kit according to claim 7 wherein the top layer is permeable to water for enabling water absorption into the absorbent material laminated between the top gel layer and a corresponding bottom layer.
9. The coaster kit according to claim 8 wherein the relatively low peel strength of each top gel layer is sufficient to enable the base to maintain adherence to said container upon elevation of said container from a supporting surface.
10. The coaster kit according to claim 8 wherein the relatively high peel strength of each bottom gel layer is sufficient to enable separation of the container from the base with the gel remaining adhered thereto.
11. The coaster kit according to claim 10 wherein the relatively high peel strength of each bottom gel layer is sufficient to enable separation of the base from the container with the gel adhered thereto.