Claims
- 1. A plastic film bag comprising:
- an open upper end;
- a closed lower end;
- a pair of opposite side edge portions each defined by a plurality of plastic film layers;
- a pair of opposite side walls interconnecting said side edge portions and said lower end; and
- an elongated plastic film tie element having an inner end side surface portion including an inner end edge of said tie element and abutting one of said opposite side edge portions adjacent said upper bag end, a substantial part of said side surface portion, including a section thereof closely adjacent said inner end edge, laterally overlying and being weldingly intersecured with at least two plastic film layers of said one of said side edge portions with sufficient strength to permit a remaining free outer end portion of said tie element to be passed around an upper end portion of the bag to form a loop therearound, passed through the loop, and then firmly pulled to tighten the loop and close the bag without separating the welded end portion of the tie element from the bag, said plastic film tie element having a sufficient limpness and deformability to cause the tightened loop to frictionally engage the upper bag end and hold it closed when said remaining free outer end portion of said tie element is released.
- 2. The plastic film bag of claim 1 wherein:
- said plastic film tie element is an elongated single strip of plastic film material having a free end portion defining said free end portion of said tie element.
- 3. The plastic film bag of claim 1 wherein:
- said plastic film tie element comprises a single strip of plastic film material having continguous outer end portions combinatively defining said relatively large end portion area of said tie element, and a looped central portion defining said free end portion of said tie element.
- 4. The plastic film bag of claim 1 wherein:
- said plastic film tie element comprises a duality of separate plastic film strips having contiguous inner end portions combinatively defining said relatively large end portion area of said tie element.
- 5. The plastic film bag of claim 4 wherein:
- said duality of separate plastic film strips have intersecured outer end portions spaced apart from said inner end portions thereof.
- 6. The plastic bag of claim 1 wherein:
- the thickness of said plastic film tie element is no more than approximately three times the film thickness of the balance of said bag.
- 7. A plastic film bag comprising:
- an open upper end;
- a closed lower end;
- a pair of opposite side edge portions each defined by a plurality of plastic film layers;
- a pair of opposite side walls interconnecting said side edge portions and said lower end; and
- an elongated plastic film tie element, a relatively large end portion area of said tie element and at least two plastic film layers of one of said side edge portions adjacent said upper end being weldingly intersecured with sufficient strength to permit a remaining free outer end portion of said tie element to be passed around an upper end portion of the bag to form a loop therearound, passed through the loop, and then firmly pulled to tighten the loop and close the bag without separating the welded end portion of the tie element from the bag,
- said plastic film tie element being an elongated single strip of plastic film material having a free end portion defining said free end portion of said tie element,
- said single strip of plastic film material having a relatively stiff first layer, and a more flexible second layer, said second layer having an end portion weldingly intersecured with an outermost one of said at least two layers of one of said side edge portions.
- 8. The plastic film bag of claim 7 wherein:
- said second layer has a higher coefficient of friction than that of said first layer.
- 9. The plastic film bag of claim 8 wherein:
- said first layer is of a high density polyethylene material, and
- said second layer is of an ethyl vinyl acetate material.
- 10. A plastic film bag comprising:
- an open upper end;
- a closed lower end;
- a pair of opposite side edge portions each defined by a plurality of plastic film layers;
- a pair of opposite side walls interconnecting said side edge portions and said lower end; and
- an elongated plastic film tie element, a relatively large end portion area of said tie element and at least two plastic film layers of one of said side edge portion adjacent said upper end being weldingly intersecured with sufficient strength to permit a remaining free outer end portion of said tie element to be passed around an upper end portion of the bag to form a loop therearound, passed through the loop, and then firmly pulled to tighten the loop and close the bag without separating the welded end portion of the tie element form the bag,
- said end portion area of said tie element having a central portion which is unsecured to said one of said side edge portions and defines therewith a gap through which said free end portion of said tie element may be passed to effect closure of said upper end of the bag.
- 11. A plastic film bag having integral closure tie apparatus, comprising:
- a plastic film bag having:
- an open upper end,
- a closed lower end,
- a pair of opposite side edge portions, and
- a pair of opposite side walls interconnecting said side edge portions and said lower end; and
- tie means fixedly secured to said plastic film bag and usable to close said open upper end thereof, said tie means including:
- an elongated closure tie element formed from a relatively limp material and having an inner end portion including an inner end edge of said tie element, an outer end portion, and a longitudinally intermediate portion extending between said inner and outer end portions, and
- means for permanently anchoring said inner end portion of said tie element in an abutting and laterally overlying relationship with a side surface of one of said side edge portions of said bag adjacent said open upper end thereof and positioning said tie element relative to said upper end in a manner such that said longitudinally intermediate tie element portion may be passed around said upper bag end to form a loop therearound through which said outer end portion of said tie element may be passed and then pulled to cause said loop to constrict around, frictionally engage, and hold said upper end of said plastic film bag in a closed position with said inner end portion of said tie element still secured to said one of said side edge portions of said plastic film bag.
- 12. The plastic film bag of claim 11 wherein:
- said tie element is formed from a plastic film material.
- 13. The plastic film bag of claim 12 wherein:
- the plastic film material of said tie element has a thickness no greater than approximately three times the thickness of the plastic film material of said bag.
- 14. A plastic film bag having integral closure tie apparatus, comprising:
- a plastic film bag having:
- an open upper end,
- a closed lower end,
- a pair of opposite side edge portions, and
- a pair of opposite side walls interconnecting said side edge portions and said lower end; and
- tie means fixedly secured to said plastic film bag and usable to close said open upper end thereof, said tie means including:
- an elongated closure tie element formed from a relatively limp material and positioned in a looped configuration in which opposite end portions of the tie element are positioned against one another and a looped central portion of the tie element forms a free end section thereof, said free end section having an outer end, and
- means for firmly securing said opposite end portions of said tie element to and in a laterally overlying relationship with one of said side edge portions of said bag adjacent said open upper end thereof and positioning said free end section of said tie element relative to said upper bag end in a manner such that said free end section of said tie element may be passed around said upper bag end to form a loop therearound through which said outer tie element end may be passed and then pulled to cause said tightening loop to constrict around, frictionally engage, and hold said upper end of said plastic film bag in a closed position with said opposite end portions of said tie element still secured to said one of said side edge portions of said plastic film bag and said outer end of said tie element defining a convenient, looped carrying handle for the closed bag.
- 15. The plastic film bag of claim 14 wherein:
- said tie element is formed from a plastic film material.
- 16. The plastic film bag of claim 15 wherein:
- the plastic film material of said tie element has a thickness no greater than approximately three times the thickness of the plastic film material of said bag.
Parent Case Info
This application is a division, of application Ser. No. 117,209, filed Nov. 4, 1987, now U.S. Pat. No. 4,854,735.
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Divisions (1)
|
Number |
Date |
Country |
Parent |
117209 |
Nov 1987 |
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