초록

A process for making chemical protective wipes is disclosed. A top layer is fully needlepunched (102). A bottom layer is fully needlepunched (104). Then, an adsorption layer is sandwiched between the top layer and the bottom layer (106). Then, the sandwich is fully needlepunched (108).

대표청구항 ▼

What is claimed is: 1. A process for making chemical protective wipes, the process comprising: fully needlepunching a top layer to form a needle punched coherent top layer to greater than 100 punches/cm2; fully needlepunching a bottom layer to form a needle punched coherent bottom layer to greater

What is claimed is: 1. A process for making chemical protective wipes, the process comprising: fully needlepunching a top layer to form a needle punched coherent top layer to greater than 100 punches/cm2; fully needlepunching a bottom layer to form a needle punched coherent bottom layer to greater than 100 punches/cm2; then, sandwiching an adsorption layer between the coherent top layer and the coherent bottom layer to form a composite; and then, fully needlepunching the composite to form a multilayer composite interlocked only at the interfaces between the layers. 2. The process of claim 1, wherein the step of fully needlepunching the top layer comprises: fully needlepunching a top stack of two or more top layers to greater than 100 punches/cm2; whereby the sandwiching step comprises: sandwiching an adsorption layer between the top stack and the coherent bottom layer. 3. The process of claim 2, wherein the step of fully needlepunching the bottom layer comprises: fully needlepunching a bottom stack of two or more bottom layers to greater than 100 punches/cm2; whereby the sandwiching step comprises: sandwiching an adsorption layer between the top stack and the bottom stack. 4. The process of claim 3, wherein the step of fully needlepunching the top stack of two or more top layers comprises: separately fully needlepunching each of the top layers of the top stack wherein the step of fully needlepunching the bottom stack of two or more bottom layers comprises: separately fully needlepunching each of the bottom layers of the bottom stack. 5. The process of claim 3, wherein the step of fully needlepunching the top stack of two or more top layers comprises: stacking the two or more top layers into the top stack; and then, fully needlepunching the top stack to greater than 100 punches/cm2; wherein the step of fully needlepunching the bottom stack of two or more bottom layers comprises: stacking the two or more bottom layers into the bottom stack; and then, fully needlepunching the bottom stack to greater than 100 punches/cm2. 6. The process of claim 3, wherein the step of fully needlepunching the top stack of two or more top layers comprises: fully needlepunching the top stack of two or more top layers from above and from below; and wherein the step of fully needlepunching the bottom stack of two or more bottom layers comprises: fully needlepunching the bottom stack of two or more bottom layers from above and from below. 7. The process of claim 6, wherein the step of fully needlepunching the sandwich comprises: fully needlepunching the sandwich from above and from below. 8. The process of claim 7, wherein the sandwiching step comprises: sandwiching a plurality of adsorption layers between the top stack and the bottom stack. 9. The process of claim 8, wherein the top and bottom layers comprise fibers having denier within the range of about 1-3. 10. The process of claim 8, wherein the top and bottom layers comprise fibers having denier equal to about 1.5. 11. The process of claim 8, wherein the top and bottom layers comprise fibers having lengths within the range of about 1-3 inches. 12. The process of claim 8, wherein the top and bottom layers comprise fibers having lengths equal to about 1.5 inch. 13. The process of claim 8, wherein at least a portion of the needlepunching comprises oblique needlepunching. 14. The process of claim 8, wherein at least a portion of the needlepunching comprises straight needlepunching. 15. The process of claim 3, wherein the step of fully needlepunching the top stack of two or more top layers comprise the step of fully needlepunching from above and from below at about 50-1500 strokes per minute; and wherein the step of fully needlepunching the bottom stack of two or more bottom layers comprise the step of fully needlepunching from above and from below at about 50-1500 strokes per minute. 16. The process of claim 3, wherein the step of fully needlepunching the top stack of two or more top layers comprise the step of fully needlepunching from above and from below at about 500-750 strokes per minute; and wherein the step of fully needlepunching the bottom stack of two or more bottom layers comprise the step of fully needlepunching from above and from below at about 500-750 strokes per minute. 17. The process of claim 1, wherein each of the top and bottom layers weighs about 10-500 grams per square meter. 18. The process of claim 1, wherein each of the top and bottom layers weighs about 43.8 grams per square meter.