A method of fabricating reclosable bags comprising: disposing a releasably engaged closure between a first and a second bag film portions, the closure including a loop-engageable fastener strip comprising an array of loop-engageable fastener elements integrally molded with a sheet-form resin substra
A method of fabricating reclosable bags comprising: disposing a releasably engaged closure between a first and a second bag film portions, the closure including a loop-engageable fastener strip comprising an array of loop-engageable fastener elements integrally molded with a sheet-form resin substrate, and a loop strip comprising a plurality of loops carried on a sheet-form resin base; and applying energy to bond the resin substrate of the loop-engageable fastener strip to the first bag film portion and to bond the resin base of the loop strip to the second bag film portion; wherein the loop-engageable fastener strip is not bonded to the loop strip when the energy is applied.
대표청구항▼
What is claimed is: 1. A method of fabricating reclosable bags, the method comprising: disposing a releasably engaged closure between a first bag film portion and a second bag film portion, the closure comprising a loop-engageable fastener strip and a loop strip, the loop-engageable fastener strip
What is claimed is: 1. A method of fabricating reclosable bags, the method comprising: disposing a releasably engaged closure between a first bag film portion and a second bag film portion, the closure comprising a loop-engageable fastener strip and a loop strip, the loop-engageable fastener strip comprising an array of loop-engageable fastener elements integrally molded with and extending from a sheet-form resin substrate, the loop strip comprising a plurality of loops carried on a sheet-form resin base, the loop-engageable fastener elements being engaged with the loops; and applying energy to a bonding region of the first bag film portion adjacent the loop-engageable fastener strip and to a bonding region of the second bag film portion adjacent the loop strip, the energy bonding the resin substrate of the loop-engageable fastener strip to the first bag film portion and bonding the resin base of the loop strip to the second bag film portion, wherein the engaged loop-engageable fastener elements and loops define insulating air pockets therebetween, the insulating air pockets substantially preventing the loop-engageable fastener strip from becoming permanently bonded to the loop strip when the energy is applied to the first and second bag film portions. 2. The method of claim 1, wherein the closure comprises a unitary closure. 3. The method of claim 2, wherein the loop-engageable fastener strip and the loop strip are integrally attached to one another. 4. The method of claim 2, wherein the closure defines a frangible region extending between the loop-engageable fastener strip and the loop strip. 5. The method of claim 1, wherein the loop-engageable fastener elements comprise stems having integrally molded head elements extending from distal portions of the stems, the head elements overhanging the resin substrate. 6. The method of claim 1, wherein the loop-engageable fastener elements comprise hooks. 7. The method of claim 1, wherein the loop-engageable fastener elements comprise mushroom-shaped fastener elements. 8. The method of claim 1, wherein the energy comprises one or more types of energy selected from the group consisting of heat, acoustic energy, and radio-frequency energy. 9. The method of claim 1, wherein the energy is applied substantially simultaneously to the bond regions of the first and second bag film portions. 10. The method of claim 1, further comprising applying pressure to the bond regions of the first and second bag film portions. 11. The method of claim 10, wherein applying pressure to the bond regions comprises pressing the bag film portions and the closure between heated jaws. 12. The method of claim 1, wherein the loops of the loop strip overlap the bond regions of the first and second bag film portions. 13. The method of claim 1, wherein the bond between the resin substrate of the loop-engageable fastener strip and the first bag film portion comprises a thermal bond, and the bond between the resin base of the loop strip and the second bag film portion comprises a thermal bond. 14. The method of claim 1, wherein the loop-engageable fastener elements comprise one or more materials and the loops comprise one or more materials, the one or more materials of the loop-engageable fastener elements being incompatible with the one or more materials of the loops such that, when the energy is applied, the loop-engageable fastener elements and the loops are substantially prevented from becoming bonded to one another. 15. The method of claim 1, wherein the loop-engageable fastener elements have a first melting temperature and the loops have a second melting temperature significantly different than the first melting temperature, such that, when the energy is applied to the bonding regions of the first and second bag film portions, the loop-engageable fastener elements and the loops are substantially prevented from becoming bonded to one another. 16. The method of claim 1, wherein the first and second bag film portions comprise portions of separate sheets of bag film. 17. The method of claim 1, wherein the loops are at least partially encapsulated by and secured by the resin base. 18. The method of claim 1, wherein the method is performed during vertical form and fill packaging. 19. The method of claim 1, wherein the method is performed during horizontal form and fill packaging. 20. The method of claim 1, wherein the method is performed during pouch making. 21. A method of fabricating reclosable bags, the method comprising: disposing a releasably engaged closure between a first bag film portion and a second bag film portion, the closure comprising a loop-engageable fastener strip and a loop strip, the loop-engageable fastener strip comprising an array of loop-engageable fastener elements integrally molded with and extending from a sheet-form resin substrate, the loop strip comprising a plurality of loops carried on a sheet-form resin base, the loop-engageable fastener elements being engaged with the loops; and applying energy to a bonding region of the first bag film portion adjacent the loop-engageable fastener strip and to a bonding region of the second bag film portion adjacent the loop strip, the energy bonding the resin substrate of the loop-engageable fastener strip to the first bag film portion and bonding the resin base of the loop strip to the second bag film portion, wherein the loop-engageable fastener elements comprise one or more materials and the loops comprise one or more materials that are incapable of bonding to the one or more materials of the loop-engageable fastener elements in response to the applied energy. 22. The method of claim 21, wherein the one or more materials of the loop-engageable fastener elements and the one or more materials of the loops are incompatible with one another. 23. The method of claim 21, wherein the one or more materials of the loop-engageable fastener elements have a significantly different melting temperature than the one or more materials of the loops. 24. The method of claim 21, wherein the loops comprise one or more materials and the resin base comprises one or more materials, the one or more materials of the loops being incapable of bonding to the one or more materials of the resin base in response to the applied energy. 25. The method of claim 21, wherein the loop-engageable fastener elements comprise one or more polyolefins. 26. The method of claim 21, wherein the loops comprise one or more polyesters.
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이 특허에 인용된 특허 (49)
Ausnit Steven (New York NY) Nocek Robert S. (Stamford CT), Apparatus for making bag material.
Ott Ronald L. (Lake Elmo MN) Gorman Michael R. (White Bear Lake MN) Becker Dennis L. (Vadnais Heights MN) Folske Donald W. (Oakdale MN) Melbye William L. (Minneapolis MN) Nestegard Susan K. (Woodbury, Coated abrasive sheet material with loop material for attachment incorporated therein.
Wilson Shari J. (Minneapolis MN) Appeldorn Roger H. (White Bear Lake MN) Hamlin Robert N. (Stillwater MN), Container with intermeshable closure members.
Sullivan Brian P. (Shelbyville IN) Dennis Larry T. (Greenwood IN) Ferrell Robert A. (Shelbyville IN), Reclosable bag with sealed laminated liner and method.
Custer Richard G. (Appleton WI) Kosiorek Richard R. (Appleton WI) Kolosoo Michael P. (Appleton WI) Tomic Mladomir (Appleton WI), Reclosable package with tear strip.
Roach Jennifer A. (Cincinnati OH) Toms Douglas (Cincinnati OH) Blaney Ted L. (West Chester OH) Chisholm M. Elizabeth P. (Cincinnati OH), Refastenable adhesive fastening systems for individually packaged disposable absorbent articles.
Appeldorn Roger H. (White Bear Lake MN) Johnson Robert J. (Hudson WI) Rouser Forrest J. (San Rafael CA) Erwin Robert L. (Rohnert Park CA), Reusable security enclosure.
Gorman Michael R. (St. Paul MN) Becker Dennis L. (St. Paul MN) Folske Donald W. (St. Paul MN) Melbye William L. (St. Paul MN) Nestegard Susan K. (St. Paul MN) Ott Ronald L. (St. Paul MN), Sheet of loop material, and garments having such loop material incorporated therein.
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