US4817188A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bag with separate attached zipper and method of making
Assignee: Illinois Tool Works Inc
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Filing: 1988-03-07
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Granted: 1989-03-28
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Expires: 2008-03-07
Abstract
Abstract An improved reclosable bag structure such as formed out of plastic film or laminations thereof with front and back wall panels attached at their bottom and side edges and reclosable rib and groove profile fastener strips along the inner surface of the panels at the bag top with at least one of the strips secured by a layer of bonding element that has a limited area to secure the fastener strip only at its upper edge at a location above the profile or alternatively the strip uses a bond preventing element that permits only the upper edge of said strip to be secured to said panel at a location above the profile with this manner of securing accommodating outward movement of the film panel to apply a force on the strips in a shear rather than a peel mode.
Inventors
- 👤 Donald L. Van Erden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:28
CPC Classifications
B; B65; B65D; B65D33/00; B65D33/16; B65D33/25; B65D33/2508; B65D33/2541; A; A44; A44B; A44B19/00; A44B19/10; A44B19/16; B31; B31B; B31B70/00; B31B70/74; B31B70/81; B31B70/813; B31B70/8131; Y; Y10; Y10S; Y10S24/00; Y10S24/30; Y10S24/50; Y10T; Y10T24/00; Y10T24/28
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
181 words
A reclosable bag structure comprising in combination: front and back flexible plastic film wall panels attached only their bottom and side edges and separated at the top edges to form a top filling opening; separate first and second facing complementary pressure closable reopenable closure strips attached across the top of the inner surface of the bag wall panels; said closure strips having interlockable rib and groove profiles on their confronting faces with said strips each having a base secured to the inner surface on the wall panel; and at least one of the strips having a bonding element securing its base only along its upper edge to its panel at a location above the profile so that said element provides a hinge accommodating outward movement of the film panel relative to said strip without applying a direct opening force to the profile and forces on the wall panel operate in a shear rather than a peel mode on the strip; said one strip being provided with a base which is thicker at its upper edge than the remainder of the base.
Claim 2
Dependent Claim
181 words
A reclosable bag structure comprising in combination: front and back flexible plastic film wall panels attached only their bottom and side edges and separated at the top edges to form a top filling opening; separate first and second facing complementary pressure closable reopenable closure strips attached across the top of the inner surface of the bag wall panels; said closure strips having interlockable rib and groove profiles on their confronting faces with said strips each having a base secured to the inner surface on the wall panel; and at least one of the strips having a bonding element securing its base only along its upper edge to its panel at a location above the profile so that said element provides a hinge accommodating outward movement of the film panel relative to said strip without applying a direct opening force to the profile and forces on the wall panel operate in a shear rather than a peel mode on the strip; said one strip being provided with a base which is thicker at its upper edge than the remainder of the base.
Claim 3
Dependent Claim
198 words
A reclosable bag structure comprising in combination: front and back flexible plastic film wall panels attached along their bottom and side edges and separated at the top edges to form a top filling opening; separate first and second facing complementary pressure closable reopenable closure strips attached across the top of the inner surface of the bag wall panels; said closure strips having interlockable rib and groove profiles on their confronting faces with said strips each having a base secured to the inner surface of the wall panel; at least one of the strips having a bonding element securing its base only along its upper edge to its panel at a location above the profile so that said element provides a hinge accommodating outward movement of the film panel relative to said strip without applying a direct opening force to the profile and forces on the wall panel operate in a shear rather than a peel mode on the strip; and a layer of bonding resistant material between the panel and the base of said one strip along the lower edge of the base preventing the bonding element from attaching the lower edge of the base to the panel.
Claim 4
Dependent Claim
198 words
A reclosable bag structure comprising in combination: front and back flexible plastic film wall panels attached along their bottom and side edges and separated at the top edges to form a top filling opening; separate first and second facing complementary pressure closable reopenable closure strips attached across the top of the inner surface of the bag wall panels; said closure strips having interlockable rib and groove profiles on their confronting faces with said strips each having a base secured to the inner surface of the wall panel; at least one of the strips having a bonding element securing its base only along its upper edge to its panel at a location above the profile so that said element provides a hinge accommodating outward movement of the film panel relative to said strip without applying a direct opening force to the profile and forces on the wall panel operate in a shear rather than a peel mode on the strip; and a layer of bonding resistant material between the panel and the base of said one strip along the lower edge of the base preventing the bonding element from attaching the lower edge of the base to the panel.
Claim 5
Dependent Claim
18 words
A reclosable bag structure constructed in accordance with claim 5: wherein said bonding element is a heat weld.
Claim 6
Dependent Claim
18 words
A reclosable bag structure constructed in accordance with claim 2: wherein said bonding resistant material is a silicon.
Claim 7
Independent Claim
182 words
The method of making a reclosable bag structure comprising the steps: providing front and back flexible plastic film wall panels attached along their bottom and side edges and separated at their top edges to form a top filling opening for a bag; providing separate first and second complementary pressure closable reopenable closure strips and attaching said strips across the top of the bag to the inner surface of the wall panel; said closure strips having interlockable rib and groove profiles on their confronting faces with said strips each having a base secured to the inner surface of the wall panel; and providing a bonding element between at least one of said strips and its panel bonding the strip to its wall panel at its base only at its upper edge at a location above the profiles so that said element provides a hinge accommodating outward movement of the film panel relative to said one strip without applying a direct opening force to the profiles and forces on the wall panel operate in a shear rather than a peel mode on the strip.
Claim 8
Independent Claim
182 words
The method of making a reclosable bag structure comprising the steps: providing front and back flexible plastic film wall panels attached along their bottom and side edges and separated at their top edges to form a top filling opening for a bag; providing separate first and second complementary pressure closable reopenable closure strips and attaching said strips across the top of the bag to the inner surface of the wall panel; said closure strips having interlockable rib and groove profiles on their confronting faces with said strips each having a base secured to the inner surface of the wall panel; and providing a bonding element between at least one of said strips and its panel bonding the strip to its wall panel at its base only at its upper edge at a location above the profiles so that said element provides a hinge accommodating outward movement of the film panel relative to said one strip without applying a direct opening force to the profiles and forces on the wall panel operate in a shear rather than a peel mode on the strip.
Claim 9
Dependent Claim
31 words
The method of making a reclosable bag structure in accordance with the steps of claim 5: wherein said layer is an adhesive and said one strip is bonded by the adhesive.
Claim 10
Dependent Claim
39 words
The method of making a reclosable bag structure in accordance with the steps of claim 5: including the steps of applying bonding elements layer sand bonding both of the strips along their upper edge only to their respective panels.
Claim 11
Dependent Claim
40 words
The method of making a reclosable bag structure in accordance with the steps of claim 5: including the step of applying an adhesive supporting material in a narrow strip along the area of an upper portion of said one strip.
Claim 12
Independent Claim
209 words
The method of making a reclosable bag structure comprising the steps: providing front and back flexible plastic film wall panels attached along their bottom and side edges and separated at their top edges to form a top filling opening for a bag; providing separate first and second complementary pressure closable reopenable closure strips and attaching said strips across the top of the bag to the inner surface of the wall panel; said closure strips having interlockable rib and groove profiles on their confronting faces with said strips each having a base secured to the inner surface of the wall panel; and providing a bonding element between at least one of said strips and its panel bonding the strip to its wall panel at its base only at its upper edge at a location above the profiles so that said element provides a hinge accommodating outward movement of the film panel relative to said one strip without applying a direct opening force to the profiles and forces on the wall panel operate in a shear rather than a peel mode on the strip; said one strip having a thickened portion of its base along its upper edge and said thickened portion is joined by the bonding element to the panel.
Claim 13
Independent Claim
209 words
The method of making a reclosable bag structure comprising the steps: providing front and back flexible plastic film wall panels attached along their bottom and side edges and separated at their top edges to form a top filling opening for a bag; providing separate first and second complementary pressure closable reopenable closure strips and attaching said strips across the top of the bag to the inner surface of the wall panel; said closure strips having interlockable rib and groove profiles on their confronting faces with said strips each having a base secured to the inner surface of the wall panel; and providing a bonding element between at least one of said strips and its panel bonding the strip to its wall panel at its base only at its upper edge at a location above the profiles so that said element provides a hinge accommodating outward movement of the film panel relative to said one strip without applying a direct opening force to the profiles and forces on the wall panel operate in a shear rather than a peel mode on the strip; said one strip having a thickened portion of its base along its upper edge and said thickened portion is joined by the bonding element to the panel.
Claim 14
Independent Claim
213 words
The method of making a reclosable bag structure comprising the steps: providing front and back flexible plastic film wall panels attached along their bottom and side edges and separated at their top edges to form a top filling opening for a bag; providing separate first and second complementary pressure closable reopenable plastic closure strips to the inner surface of the wall panel; said closure strips having interlockable rib and groove profiles on their confronting faces with said strips each having a base secured to the inner surface of the wall panel; providing a bonding element between at least one of said strips and its panel bonding the strip to its wall panel at its base only at its upper edge at a location above the profiles so that said element provides a hinge accommodating outward movement of the film panel relative to said one strip without applying a direct opening force to the profiles and forces on the wall panel operate in a shear rather than a peel mode on the strip; and applying a bonding resistant layer of material between said one strip and the panel to which it is attached between the lower portion of the strip and the panel to prevent attachment of the lower portion of said one strip.
Claim 15
Independent Claim
213 words
The method of making a reclosable bag structure comprising the steps: providing front and back flexible plastic film wall panels attached along their bottom and side edges and separated at their top edges to form a top filling opening for a bag; providing separate first and second complementary pressure closable reopenable plastic closure strips to the inner surface of the wall panel; said closure strips having interlockable rib and groove profiles on their confronting faces with said strips each having a base secured to the inner surface of the wall panel; providing a bonding element between at least one of said strips and its panel bonding the strip to its wall panel at its base only at its upper edge at a location above the profiles so that said element provides a hinge accommodating outward movement of the film panel relative to said one strip without applying a direct opening force to the profiles and forces on the wall panel operate in a shear rather than a peel mode on the strip; and applying a bonding resistant layer of material between said one strip and the panel to which it is attached between the lower portion of the strip and the panel to prevent attachment of the lower portion of said one strip.
Claim 16
Dependent Claim
39 words
The method of making a reclosable bag structure in accordance with the steps of claim 10: wherein said one strip is bonded by a heat bond joining the plastic of the strip to the plastic of the wall panel.
Claim 17
Dependent Claim
23 words
The method of making a reclosable bag structure in accordance with the steps of claim 10: wherein said bonding resistant material is silicone.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-03-27 | 1992-09-26 | 1993-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-27 | 1996-09-26 | 1997-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-27 | 2000-09-26 | 2001-03-28 | $7700.00 | Window Closed / Lapsed |