EP0925229A1 - Sachet comprenant un dispositif de fermeture forme de profiles complementaires et dispositif de fermeture a cet effet - Google Patents
Sachet comprenant un dispositif de fermeture forme de profiles complementaires et dispositif de fermeture a cet effetInfo
- Publication number
- EP0925229A1 EP0925229A1 EP98932203A EP98932203A EP0925229A1 EP 0925229 A1 EP0925229 A1 EP 0925229A1 EP 98932203 A EP98932203 A EP 98932203A EP 98932203 A EP98932203 A EP 98932203A EP 0925229 A1 EP0925229 A1 EP 0925229A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- base
- ribs
- bag
- fixing rib
- closure device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D33/00—Details of, or accessories for, sacks or bags
- B65D33/16—End- or aperture-closing arrangements or devices
- B65D33/25—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
- B65D33/2508—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor
- B65D33/2541—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor characterised by the slide fastener, e.g. adapted to interlock with a sheet between the interlocking members having sections of particular shape
- B65D33/255—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor characterised by the slide fastener, e.g. adapted to interlock with a sheet between the interlocking members having sections of particular shape being provided with special visual, audible or tactile indicating means, e.g. indicating proper engagement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D33/00—Details of, or accessories for, sacks or bags
- B65D33/16—End- or aperture-closing arrangements or devices
- B65D33/25—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
- B65D33/2508—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor
- B65D33/2541—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor characterised by the slide fastener, e.g. adapted to interlock with a sheet between the interlocking members having sections of particular shape
Definitions
- Bag comprising a closure device formed of complementary profiles and closure device for this purpose
- the present invention is in the field of sachets comprising plastic closure devices. More particularly, the invention relates to closure devices fixed by welding to a bag wall.
- each profile comprises a base intended to be fixed to the wall of the bag and at least one closure element projecting from said base.
- Each profile is fixed to the wall of the bag, so that each closure element of a profile is opposite a closure element of the other profile which is complementary thereto.
- Devices which, to facilitate welding of the base to the wall, have a base provided with ribs.
- patent FR 2 613 326 describes separable closure profiles provided with several fusible ribs, of rectangular cross section, having a mass sufficient to provide a molten bonding layer between the profile and the wall of the bag.
- welding is sometimes difficult, reducing the effectiveness of the fixing and causing deformations of the profile, hindering the good cooperation of the closure elements.
- the object of the invention is to provide an improvement to the welding ribs of the closure profiles, on bag walls.
- the invention is a plastic bag provided with a separable and reclosable closure device consisting of two sections, each section consisting of a base provided, on one side, with a closure element, capable of cooperating with that of the other profile and, on the opposite face, of at least one fixing rib of the base on a wall of a bag, by melting and crushing of the fixing rib on said wall, characterized in that the rib has a cross section whose width increases from the free end towards the base.
- the width of the contact zone between the rib and the wall of the bag is therefore variable and depends on the quality of the welding.
- This rib profile has the advantage of being tolerant with respect to variations in the welding pressure of the profile on the film of the bag. Indeed, if the welding pressure is low, the force on the tip is nevertheless sufficient to give an effective weld. On the other hand, the higher the pressure, the larger the welding surface, thus imposing an even higher back pressure. This effect makes it possible to avoid crossing the total thickness of the film constituting the wall of the bag.
- a pigment is introduced into the mass of the plastic, at least at the ribs.
- the wall of the bag is translucent or transparent, a more or less colored band appears at the level of the fixing of the profiles.
- the width and the intensity of the color of this strip are then a function of the importance of the region of the rib having fused with the support.
- the quality of the fixing can be checked optically after welding.
- asymmetrical coloring of the ribs on either side of the closure elements allows the manipulator to identify the direction in which the profile must be placed relative to the opening of the bag.
- the closure element must have a high resistance to the internal pressure of the contents of the sachet.
- the same element must be able to be opened easily by the user and therefore have less resistance to external pressure.
- the closure elements have an asymmetry which must be identifiable during the step of welding the profile to the wall of the bag.
- Figure 1 is a perspective view of a closure device according to the invention, with its separate closure elements, before welding of the ribs on the walls of the bag.
- Figure 2 is a perspective view of a closure device according to the invention, with its nested closure elements, after welding of the ribs on the walls of the bag.
- Figure 3 is a series of cross sections of a triangular rib, to illustrate the interest of pigmentation in the mass.
- FIG 4 is a schematic representation of a bag closure device according to the invention, in a die, between two guides of a certain type.
- Figure 5 is a schematic representation of a bag closure device according to the invention, between two guides of another type.
- a closure device 1 e n plastic consisting of two sections 2.
- Each section 2 consists of a base 3.
- Each base 3 is a flat strip of rectangular section.
- the internal face is provided with at least one closing element 4.
- the external face is provided with at least one fixing rib 5 of the profile 2 on a bag wall 10.
- Each closing element 4 is parallel to the edge of the '' base 3.
- the closure elements 4 of each profile 2 are able to cooperate with each other to make the two profiles 2 integral with one another. These closing elements can be fitted into one another and separated reversibly.
- one of the closing elements 4 is represented by an arrow which symbolizes a male element.
- the other closing element 4 is represented by an open cylinder, which symbolizes a female element.
- these elements are of any known form, capable of ensuring the closing function by nesting the male element in the female element.
- this closure is hermetic.
- Each fixing rib 5 is parallel to the edge of the base 3.
- Each fixing rib 5 has a cross section whose width increases from the free end towards the base 3.
- this section is generally triangular. The triangle thus defined is isosceles or even equilateral. If it is isosceles, neither of the two sides of the same length coincides with the base 3.
- Each rib 5 can be arranged on the base 3 in several ways. For example and preferably, if there are two ribs 5 per profile 2, they are each located near a longitudinal edge S of the base 3, on the face of the base 3 opposite to that carrying the element 4.
- this embodiment is not limiting and it is also possible to envisage a single rib 5 per profile 2, just like three or four ribs 5 per profile 2, or even more. In this case, two of them are each located for example, near a longitudinal edge 8 of the base 3.
- the amount of material of the ribs 5 subjected to crushing during welding can be variable.
- the triangular shape of the ribs 5 allows direct visual control of the quality of the weld obtained.
- the plastic, and in particular that of the ribs 5, of the closure device 1 can be dyed in the mass with pigments.
- This improvement makes it possible to view the width 1 of the weld surface 6 by transparency, through the wall of the bag 10.
- Pigmentation can be obtained with any type of pigment.
- the pigment concentration can be less than 1% by weight.
- the amount of pigment accumulated on the surface of the weld 6 is greater if the tip 7 of the rib 5 is crushed over a greater height h (FIG. 3).
- the quality of the welding can be controlled optically, not only by virtue of the width 1 of the surface of the weld 6, but also thanks to the intensity of the color of the weld 6.
- each profile 2 can have the following dimensions:
- Profile 2 can be made with different types of polymers. These polymers can in particular be a polyolefin or a mixture of polyolefins.
- the base 3 and the closure elements can be made of any polymer having mechanical characteristics making it possible to ensure good resistance of the closure.
- This polymer can be, for example, a low, medium or high density polyolefin.
- the ribs 5 can be made of any polymer having good weldability characteristics and which can be coextruded with the material of the base 2.
- This polymer can be, for example, a polyolefin such as linear polyolefins, EVA, of metalocene, etc. .
- the material constituting the ribs 5 may be different from that constituting the closure elements 4 and the base 3.
- the material constituting the ribs has a melting point lower than that constituting the elements closure 4 and base 3.
- the ribs 5 have a geometry and a position. on the base 3 which allow all of the two profiles 2 of the closure device 1 to deform in order to have a reduced space requirement between the guides 21 of said dies 20 (FIG. 4). More precisely, the sum of the widths L of the external faces 7 of the ribs 5 is approximately less than or equal to the thickness E of the assembly of the two sections 2 in line with the closing elements 4, when said elements 4 are nested one in the other.
- the ribs 5 make it possible to precisely wedge the profiles 2, in said dies 30, between guide elements 31 , blades or rollers (Figure 5).
- the width of the base 3 between the bases of the internal faces 7 ′ of the ribs 5 is approximately complementary to the width of the guide elements 31.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bag Frames (AREA)
- Package Closures (AREA)
- Making Paper Articles (AREA)
- Slide Fasteners (AREA)
- Purses, Travelling Bags, Baskets, Or Suitcases (AREA)
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9707490 | 1997-06-17 | ||
| FR9707490A FR2764582B1 (fr) | 1997-06-17 | 1997-06-17 | Sachet comprenant un dispositif de fermeture forme de profiles complementaires et dispositif de fermeture a cet effet |
| PCT/FR1998/001248 WO1998057863A1 (fr) | 1997-06-17 | 1998-06-15 | Sachet comprenant un dispositif de fermeture forme de profiles complementaires et dispositif de fermeture a cet effet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0925229A1 true EP0925229A1 (fr) | 1999-06-30 |
| EP0925229B1 EP0925229B1 (fr) | 2003-09-03 |
Family
ID=9508061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98932203A Expired - Lifetime EP0925229B1 (fr) | 1997-06-17 | 1998-06-15 | Sachet comprenant un dispositif de fermeture forme de profiles complementaires et dispositif de fermeture a cet effet |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP0925229B1 (fr) |
| AT (1) | ATE248756T1 (fr) |
| AU (1) | AU728260B2 (fr) |
| BR (1) | BR9806226A (fr) |
| CA (1) | CA2263371A1 (fr) |
| DE (1) | DE69817748T2 (fr) |
| FR (1) | FR2764582B1 (fr) |
| NZ (1) | NZ334178A (fr) |
| WO (1) | WO1998057863A1 (fr) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7163133B2 (en) | 2004-03-05 | 2007-01-16 | S.C. Johnson Home Storage, Inc. | Apparatus for and method of moving a slider along mating zipper elements |
| US7244222B2 (en) | 2004-03-05 | 2007-07-17 | S.C. Johnson Home Storage, Inc. | Apparatus for and method of positioning a slider on mating zipper elements |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5956924A (en) | 1997-11-07 | 1999-09-28 | Rcl Corporation | Method and apparatus for placing a product in a flexible recloseable container |
| US6216423B1 (en) | 1997-11-07 | 2001-04-17 | Huntsman Kcl Corporation | Method and apparatus for placing a product in a flexible recloseable container |
| US7254873B2 (en) | 1998-06-04 | 2007-08-14 | Illinois Tool Works, Inc. | Scored tamper evident fastener tape |
| US6925688B1 (en) * | 2000-06-06 | 2005-08-09 | The Glad Products Company | Closure device |
| US7611284B2 (en) | 2004-04-26 | 2009-11-03 | The Glad Products Company | Closure device |
| US8662330B2 (en) | 2009-09-03 | 2014-03-04 | Cap-N-Lock, Llc | Lockable cap for medical prescription bottle |
| US8931652B2 (en) | 2009-09-03 | 2015-01-13 | Cap N Lock Llc | Lockable cap for a bottle |
| US9758989B1 (en) | 2014-03-26 | 2017-09-12 | Gatekeeper Innovation, Inc. | Locking cap with push button reset |
| US10717571B1 (en) | 2018-03-06 | 2020-07-21 | Gatekeeper Innovation, Inc. | Clam shell cover cap and method of use |
| US11279535B1 (en) | 2018-03-06 | 2022-03-22 | Gatekeeper Innovation, Inc. | Clam shell cover cap and method of use |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2613326B1 (fr) * | 1987-04-03 | 1989-07-13 | Flexico France Sarl | Bande de fermeture separable; procede et appareil pour sa fixation sur un substrat |
| US5628566A (en) * | 1996-01-29 | 1997-05-13 | Reynolds Consumer Products, Inc. | Profile sealing flange |
-
1997
- 1997-06-17 FR FR9707490A patent/FR2764582B1/fr not_active Expired - Fee Related
-
1998
- 1998-06-15 NZ NZ334178A patent/NZ334178A/xx unknown
- 1998-06-15 BR BR9806226A patent/BR9806226A/pt not_active IP Right Cessation
- 1998-06-15 EP EP98932203A patent/EP0925229B1/fr not_active Expired - Lifetime
- 1998-06-15 CA CA002263371A patent/CA2263371A1/fr not_active Abandoned
- 1998-06-15 AT AT98932203T patent/ATE248756T1/de not_active IP Right Cessation
- 1998-06-15 DE DE69817748T patent/DE69817748T2/de not_active Expired - Lifetime
- 1998-06-15 AU AU82187/98A patent/AU728260B2/en not_active Ceased
- 1998-06-15 WO PCT/FR1998/001248 patent/WO1998057863A1/fr not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO9857863A1 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7163133B2 (en) | 2004-03-05 | 2007-01-16 | S.C. Johnson Home Storage, Inc. | Apparatus for and method of moving a slider along mating zipper elements |
| US7244222B2 (en) | 2004-03-05 | 2007-07-17 | S.C. Johnson Home Storage, Inc. | Apparatus for and method of positioning a slider on mating zipper elements |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2263371A1 (fr) | 1998-12-23 |
| ATE248756T1 (de) | 2003-09-15 |
| DE69817748T2 (de) | 2004-07-29 |
| FR2764582B1 (fr) | 1999-09-03 |
| AU8218798A (en) | 1999-01-04 |
| FR2764582A1 (fr) | 1998-12-18 |
| AU728260B2 (en) | 2001-01-04 |
| WO1998057863A1 (fr) | 1998-12-23 |
| NZ334178A (en) | 2000-09-29 |
| EP0925229B1 (fr) | 2003-09-03 |
| DE69817748D1 (de) | 2003-10-09 |
| BR9806226A (pt) | 2000-03-21 |
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