Breathable gel
Cushioning elements include a breathable material configured to allow gases to pass through at least a portion thereof, and a plurality of discrete segments of thermoplastic elastomeric gel (“gel”) heat-fused or otherwise attached to the breathable material. The gel comprises an elastomeric polymer and a plasticizer, with a plasticizer-to-polymer ratio of from about 0.3 to about 50. The plurality of discrete segments defines at least one breathable gap between adjacent discrete segments. Methods of forming cushioning elements include forming a plurality of discrete segments of gel, securing each segment to a breathable material, and providing a gas path through the breathable material and between adjacent segments. Another method includes providing molten gel within a mold, providing at least a second portion of the gel within a permeable material, and solidifying the gel to form discrete segments of gel.
1. A cushioning element, comprising:
an element for temperature management and cushioning, comprising:
a breathable material defining a plurality of voids that allows gases to pass continuously through the breathable material in a direction parallel to a major surface of the breathable material and in a direction perpendicular to the major surface of the breathable material; and
a plurality of discrete segments of thermoplastic elastomeric gel disposed over and heat-fused to the major surface of the breathable material, wherein a portion of the thermoplastic elastomer gel is disposed within some of the voids, wherein each segment has a thickness in a direction perpendicular to a surface of the breathable material, wherein each segment has a center surrounded by a perimeter containing a plurality of cross dimensions parallel to the surface of the breathable material, wherein all of the plurality of cross dimensions of the segment in a direction parallel to the surface are larger than the thickness, and wherein the plurality of discrete segments allows gases to pass continuously over the breathable material and between the discrete segments in a direction perpendicular to the major surface of the breathable material, the thermoplastic elastomeric gel comprising an elastomeric polymer and a plasticizer;
wherein at least one discrete segment of the plurality defines a plurality of breathable internal gaps within the segment arranged around the center of the segment comprising a thermoplastic elastomeric gel material disposed between adjacent internal gaps, each of the plurality of internal gaps having an aspect ratio from 1 to 20, the aspect ratio defined as a ratio of x/y, wherein x is defined as a maximum internal dimension perpendicular to the thickness of the segment and having a midpoint and y is defined as a second largest internal dimension perpendicular to the maximum internal dimension and the thickness of the segment, the second largest dimension occurring before the midpoint of the largest dimension;
wherein a ratio of a weight of the plasticizer to a weight of the elastomeric polymer is from about 0.3 to about 50;
wherein the plurality of discrete segments defines breathable gaps between adjacent discrete segments.
2. The cushioning element of claim 1 , wherein the plurality of discrete segments comprises a plurality of segments each having a generally square perimeter.
3. The cushioning element of claim 1 , wherein the thickness of each segment is less than 25.4 mm (1.0 in).
4. The cushioning element of claim 3 , wherein the thickness of each segment is less than 12.7 mm (0.50 in).
5. The cushioning element of claim 1 , wherein the breathable gaps each have a width from about 1.3 mm (0.05 in) to about 25 mm (1 in).
6. The cushioning element of claim 5 , wherein of each of the breathable gaps have a width from about 2.5 (0.1 in) to about 13 mm (0.5 in).
7. The cushioning element of claim 5 , wherein one of the plurality of cross dimensions is a width, wherein the width of each segment of the plurality of from about 2.5 mm (0.1 in) to about 127 mm (5 in).
8. The cushioning element of claim 7 , the width of each segment of the plurality is from about 13 mm (0.5 in) to about 51 mm (2 in).
9. The cushioning element of claim 8 , the width of each segment of the plurality is about 25.4 mm (1.0 in).
10. The cushioning element of claim 1 , wherein the plurality of discrete segments defines a generally planar surface, broken by the breathable gaps between adjacent discrete segments.
11. The cushioning element of claim 1 , wherein the cushioning element is free of a continuous impermeable barrier.
12. The cushioning element of claim 1 , wherein the elastomeric polymer comprises an A-B-A triblock copolymer.
13. The cushioning element of claim 1 , wherein the breathable material comprises a material selected from the group consisting of a woven fabric, a knit fabric, a mesh fabric, a spacer fabric, a fabric laminated to a vapor-transmissible film, and a porous foam having an open-pore network.
14. The cushioning element of claim 1 , wherein the element for temperature management and cushioning comprises a quilted top panel of a mattress.
15. The cushioning element of claim 1 , wherein the element for temperature management and cushioning is adhesively bonded to a foam base.
16. The cushioning element of claim 15 , further comprising a cover surrounding the foam base and the element for temperature management and cushioning.
17. The cushioning element of claim 1 , wherein the breathable material comprises memory foam.