Direct forming of non-textile fabric elements from plastic pellets
A process, and related structure, uses conventional palletized compositions to form the elements of a non-textile fabric by coining a single pellet or briquette of a polymer into an individual element in a single forming step. The steps of the process generally include: a) positioning a pellet in or adjacent to a mold cavity, and b) forcing the pellet into contact with the mold surfaces of the mold cavity to plastically deform the pellet to the shape of the mold cavity. The forcing step preferably uses an energy and speed where the pellet superplastically deforms to substantially fill the mold cavity. This process is repeated with the elements being formed in the appropriate order to form a non-textile fabric. The elements thus formed can have a variety of shapes, and can form base units for the formation of the non-textile fabric of two, three or more elements.
1. A method for manufacturing a non-textile fabric comprising the steps of:
forming a first and second element of said fabric;
positioning at least a portion of each of the first and second elements into a mold cavity to leave the shape of a third element of said fabric within said mold cavity; and
forming said third element by solid phase forming a plastic preform within said mold cavity to transform said preform to take the shape of said third element and to mechanically interconnect the third element with said portions of said first and second elements positioned within said mold cavity,
wherein said preform is in the form of a briquette or pellet.
2. The method of manufacturing a non-textile fabric as set forth in claim 1 wherein said plastic is a polymer.
3. The method of manufacturing a non-textile fabric as set forth in claim 1 wherein said preform is in the form of a briquette.
4. The method of manufacturing a non-textile fabric as set forth in claim 3 wherein the briquette is made of a polymer.
5. The method of manufacturing a non-textile fabric as set forth in claim 4 wherein the briquette is made of ultra high molecular weight polyethylene.
6. The method of manufacturing a non-textile fabric as set forth in claim 1 wherein said preform is in the form of a pellet.
7. The method of manufacturing a non-textile fabric as set forth in claim 1 wherein said forming of said first and second elements includes the act of solid phase forming said first and second elements.
8. The method of manufacturing a non-textile fabric as set forth in claim 1 wherein said mold cavity is formed between adjacent rollers.
9. The method of manufacturing a non-textile fabric as set forth in claim 8 wherein said preform is forced into said mold cavity by a striker controlled by an actuator, each of which are positioned within one of said rollers directly adjacent said mold cavity.