Foam product with an insert and its method of manufacture
A product, such as an insole ( 21, 22 ) or the like, is formed in a mold ( 20 ) having mold cavities ( 26, 27 ) therein. A porous insert ( 33, 34 ) is placed in the cavities ( 26, 27 ) and a foamable material ( 35 ) is introduced into the cavities ( 26, 27 ). When the material ( 35 ) cures, it impregnates the inserts ( 33, 34 ) which makes them more rigid. The resulting insoles ( 21, 22 ) thereby have a portion made up entirely of foam ( 35 ) and a portion made up of the insert material ( 33, 34 ) rigidified by the foam ( 35 ).
1. A method of making a product having a length in a mold having a cavity with a peripheral configuration comprising the steps of placing a porous material onto a portion of the peripheral configuration of the cavity, inserting a foamable material in the mold, and allowing the foamable material to cure while at the same time completely impregnating the porous material so as to render the porous material more rigid and to become integral with the foamable material while maintaining a cushioned product, wherein the foamable material is coextensive with and extends in length beyond the porous material.
2. A method according to claim 1 wherein the porous material is thicker than the depth of the cavity.
3. A method according to claim 1 wherein the porous material is thinner than the depth of the cavity resulting in a product having a foam portion.
4. A method of making a product having a length in a mold which includes first and second mold sections comprising the steps of attaching a fabric to the first mold section, placing a porous material onto the second mold section, inserting a foamable material into the second mold section, and allowing the foamable material to cure while at the same time impregnating the porous material so as to render the porous material more rigid than the cured foamable material while maintaining a cushioned product wherein the foamable material is coextensive with and extends in length beyond the porous material.
5. A method according to claim 4 further comprising the step of closing the first mold section on the second mold section prior to allowing the foamable material to cure.
6. A method according to claim 5 wherein the step of allowing the foamable material to cure attaches the fabric to the foamable material.
7. A method of making a product having a length in a mold having a cavity in the shape of the product comprising the steps of placing a porous material only on a portion of the cavity; inserting a foamable material in the cavity; allowing the foamable material to cure to form the entire shape of the product while at the same time impregnating the porous material so as to render the porous material more rigid and positioned only in the portion of the length of the product, whereby the area of the product having only the foamable material is coextensive with and extends in length beyond the porous material while maintaining full flexibility while the portion of the product having the porous material is less flexible.
8. A method of making a product having a length in a mold including a mold section having at least one cavity comprising the steps of placing a porous material on the mold section, inserting a foamable material into the cavity, and allowing the foamable material to cure while at the same time completely impregnating the porous material so as to render the porous material more rigid and to become integral with the foamable material while maintaining a cushioned product wherein the foamable material is coextensive with and extends in length beyond the porous material.
9. A method of making a product having a length in a mold comprising the steps of placing a porous material into the mold so that it will be positioned on the outside of the product, inserting a foamable material in the mold, and allowing the foamable material to cure while at the same time impregnating the porous material so as to render the porous material more rigid and positioned on the outside of the product while maintaining a cushioned product wherein the foamable material is coextensive with and extends in length beyond the porous material.