Claims
- 1. A method of making reclosable bag material, comprising:
- providing bag making film having a longitudinal formation axis;
- providing an extruded plastic profiled reclosable fastener strip of continuous length and extending lengthwise across said formation axis on a portion of the film to be located at the open end of a bag made from the film, and the strip having a base web lengthwise therealong for attachment to the film; and
- bonding said base web to the film with one portion of the length of said base web bonded to the film at a location only above the centerline of profile means on the strip and bonding another portion of the length of said web to the film both above and below said profile means.
- 2. A method according to claim 1, comprising bonding said one portion of said base web only above the centerline of profile means on the strip for one wall panel of a bag, and bonding said another portion of said web along both the top and bottom areas of said base wall of the strip on a second wall panel of such bag.
- 3. A method according to claim 1, comprising folding side portions of said film and portions of the strip thereon from opposite sides of the film onto a central portion of the film, and bonding to the side portions of said film end portions of the base web of the strip above and below the profile means while leaving unattached the base web below the profile means on the central portion of the fastener strip.
- 4. A method according to claim 1, comprising folding said base web on a central transverse fold line, folding said film parallel to said formation axis, and attaching said one portion of said base web to one part of the folded film, and attaching the another portion of the base web on the other part of the film both above and below the profile means.
- 5. A method according to claim 1, comprising folding the film parallel to said formation axis, and attaching said one portion of the base web to one portion of the folded film, while attaching said another portion of the base web to another portion of the folded film.
- 6. A method of making reclosable bag material, comprising:
- providing bag making film;
- providing a continuous extruded plastic reclosable fastener strip having profile means extending along the length of the strip and the strip extending entirely across a portion of the film to be located at one end of a bag made from the film, and the strip having a base web for attachment to the film;
- bonding one portion of the length of the base web of the folded strip to the film only above the centerline of said profile means of the strip;
- on another portion of the film bonding another portion of the length of the base web to the film both above and below said profile means; and
- folding the film and the strip thereon across the length of the strip.
- 7. A method according to claim 6, comprising bonding said base web only above the centerline of said profile means on the strip for one wall panel of a bag, and bonding along both the top and bottom areas of said base web of the strip on a second wall panel of such bag.
- 8. A method according to claim 6, comprising folding side portions of said film and portions of the strip thereon from opposite sides of the film onto a central portion of the film, and bonding to the side portions of said film the base web of the strip above and below the profile means while leaving unattached the base web below the profile means on the central portion of the fastener strip.
- 9. A method according to claim 6, which comprises permanently fixing said web against unfolding at the fold in the strip.
- 10. A method according to claim 6, which comprises bonding said one portion of the base web throughout the width of the folded portion of the film on which said one portion of the base web is bonded, and bonding said another portion of the base web to the film above and below said profile means across the entire width of the portion of the film on which said another portion of the strip is bonded.
- 11. A method of making a reclosable bag having a mouth end, and comprising:
- providing said bag with opposite film walls having longitudinal formation axis;
- applying an extruded plastic profiled reclosable fastener strip of continuous length lengthwise across the longitudinal formation axis of the film walls located at said mouth end of the bag, and the strip having a base web;
- bonding said base web to the film walls with a lengthwise portion of said base web bonded to one of the walls at a location only above the centerline of profile means on the strip, and bonding another lengthwise portion of the base web to another of the walls both above and below said profile means; and
- forming said walls with the fastener strip hereon into bag form with closed sides and closed bottom and said open end which is reclosable by means of said fastener strip.
- 12. A method according to claim 11, comprising bonding said base web only above the centerline of profiles on the strip on one wall of the bag and bonding said web over the full base web on the other wall of the bag.
- 13. A method according to claim 11, comprising folding side portions of said film and portions of the strip from opposite sides of the film onto a central portion of the film, and bonding to the side portions of the film the base web of the strip above and below the profile means while leaving unattached the base web below the profile means on the central portion of the fastener strip.
- 14. A method of making a bag having confronting bag body walls attached together at opposite side edges and a bottom end and an openable top end, and including providing a reclosable zipper between said wall panels and extending lengthwise between said side edges adjacent to said top end, said zipper comprising a continuous length of extruded profiled plastic strip having a plurality of spaced parallel profile parts and being folded upon itself across said profiles to provide two parallel strip portions extending from a fold, in the zipper and comprising:
- attaching one of said strip portions both above and below said profile parts to one of said wall panels and attaching the other of said strip portions to the other of said wall panels above said profile parts, and leaving at least the major areas of said other strip portion below said profile part free from said other wall panel, so that the zipper resists opening from the inside of the bag;
- forming said wall panels with the fastener strip thereon into bag form with said opposite side edges attached together;
- releasably interlocking the profile parts on said one strip portion with the profile parts on the other strip portion for closing said top end of the bag;
- locating said fold at one of said side edges; and
- spot sealing said strip portions together at said fold.
- 15. A method according to claim 14, comprising leaving the remainder of said one strip portion between said above and below attachments free from said one wall panel.
- 16. A method according to claim 14, comprising providing said other wall panel as an originally central panel of a bag making sheet, folding portions of said sheet at opposite sides of said other wall panel onto said other wall panel and thereby forming said one wall panel, and attaching part of said one strip portion to one of said side portions of the sheet and part of said one strip portion to the other of said side portions.
PRIOR APPLICATIONS
The present application is a continuation-in-part of copending application Ser. No. 812,467 filed Dec. 23, 1985 (now abandoned) and continuation thereof application Ser. No. 106,920 dated Oct. 6, 1987, now U.S. Pat. No. 4,792,240 and Ser. No. 075,636 dated July 20, 1987, now U.S. Pat. No. 4,787,880 which is a division of Ser. No. 812,467, now Ser. No. 106,920.
US Referenced Citations (5)
Related Publications (2)
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75636 |
Jul 1987 |
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812467 |
Dec 1985 |
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Divisions (1)
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812467 |
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Continuations (1)
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812467 |
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Continuation in Parts (1)
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106920 |
Oct 1987 |
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