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EP0220476A2 - Wiederverschliessbarer Beutel mit Griffstreifen - Google Patents

Wiederverschliessbarer Beutel mit Griffstreifen Download PDF

Info

Publication number
EP0220476A2
EP0220476A2 EP86112924A EP86112924A EP0220476A2 EP 0220476 A2 EP0220476 A2 EP 0220476A2 EP 86112924 A EP86112924 A EP 86112924A EP 86112924 A EP86112924 A EP 86112924A EP 0220476 A2 EP0220476 A2 EP 0220476A2
Authority
EP
European Patent Office
Prior art keywords
ridges
container
grip strip
grip
cut
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
Application number
EP86112924A
Other languages
English (en)
French (fr)
Other versions
EP0220476A3 (en
EP0220476B1 (de
Inventor
John O. Mccree
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DowBrands Inc
Original Assignee
DowBrands Inc
Dow Consumer Products Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by DowBrands Inc, Dow Consumer Products Inc filed Critical DowBrands Inc
Priority to AT86112924T priority Critical patent/ATE63519T1/de
Publication of EP0220476A2 publication Critical patent/EP0220476A2/de
Publication of EP0220476A3 publication Critical patent/EP0220476A3/en
Application granted granted Critical
Publication of EP0220476B1 publication Critical patent/EP0220476B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • B65D33/007—Details of, or accessories for, sacks or bags for facilitating the separation of the two walls, e.g. walls of inequal height, tabs; for maintaining the mouth of the sack or bag open
    • 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

Definitions

  • the container In reclosable plastic bags or other con­tainers, particularly those containing a zipper type reclosable closure such as taught in U.S.-A-4,263,079, the container usually carries lips located above the reclosable closure feature, which lips are required to be grasped between the thumb and a finger, for example, and pulled to open the closure. Some degree of force is necessary to open the closure, which is relatively secure to avoid accidental opening. Since such bags are often found in the kitchen, it is not uncommon for one's fingers to be greasy. Since lips of such bags are commonly formed from smooth films such as those formed of polyolefin resin, the ease with which the lips of the bag can be grasped and kept hold of while pulling during opening can be easily negated when the fingers are greasy.
  • the present invention is an improvement to reclosable plastic containers, such as bags, ensuring ease of grasping of the lips of bags both from a loca­tion and securing standpoint, the improvement simul­taneously leading to ease of manufacture of such con­tainers containing such improved grasping feature, hereinafter called grip strips.
  • This improvement is accomplished by modifying the lip of a reclosable bag by including on opposed surfaces thereof a plurality of generally parallel small ridges in order to provide a large area of ridged surface to grip the top or lip of the bag when opening or filling the bag. It has also been found that when a larger number of ridges are used, the ridges can be considerably smaller than when a single rib is employed and still produce an improved gripping surface.
  • small ridges are easier to produce than fewer large ribs. Small ridges require less modif­ication to the die when added to the film by extrusion. In addition, small ridges can be produced by other techniques than extrusion such as by embossing, and a plurality of such small ridges can also provide rein­forcement for the lip of the bag.
  • FIG. 1 there is shown a container or bag 10 having opposed side walls 12 and 13, reclosable fastener elements 14, opposed lips 16 and 18, each opposed lip containing grip strips 20 and 21 respectively, which grip strips provide for improved ease of opening and holding the bag for filling.
  • Figure 2 is a view like Figure 1 showing through a broken away section the inside of side 13 of the bag 10 with its lip 16 and grip strip 20, the latter comprising a plurality of elongated generally parallel ridges 22 extending from substan­tially one edge 15 of the bag to the other edge 17 as a strip or band across lip 16 above reclosable fastener 18. Ridges 24 are preferably substantially continuous along their length.
  • Bag 10 can be formed in a process such as shown and described in U.S. -A- 4,515,647, with the cut-away 30 of a die 29 for grip strip ridges 22 being located to the outside of the extrusion openings 31 of each profile extrusion such as shown in fragmentary Figure 3. Cut-away 30 in the front or lower edge of the die 29 form teeth-like die projections 32 being shown in somewhat exaggerated detail for clarity.
  • the cut-aways 30 which form the ridges 22 of grip strip 20 for example, are shown to be of a triangular configur­ation so as to provide ridges 22 with a generally tri­angular configuration, as shown in Figure 6, for example and described in more detail later.
  • a land 34 between cut-aways 30 is purposely not as great as the spacing "x" between the peaks 25 of adjacent ridges 22.
  • the land area 34 ( Figure 4) between cut-aways 30, which form ridges 22, is greatly extended to the distance roughly shown as about "x” minus the width "w” of one ridge 22 ( Figure 6).
  • the spacing between the ridges 22 effected by the draw-down in the extrusion process, but also the particular shape of each of the ridges 22 as disclosed hereinafter.
  • the cut-away openings 30 can take various configurations approaching a rectangle, all the way to a saw tooth type opening, such as a right triangular configuration or take the shape of a equilateral triangle.
  • a shape is desired which can present at least an edge to be engaged by a finger or a thumb when gripping the lip to open the bag containing a grip strip 20, such as shown in gripping edge 41 of ridge 22 in Figure 8D or gripping edges 42 of ridge 43 in Figure 8E, which edges are shown slightly rounded because some rounding occurs in draw-down during the extrusion process.
  • Figure 5 illustrates a grip lip 36 of the prior art which has a film thickness "t" of about two to three thousandths of an inch (0.05 to 0.08 mm), and a grip lip height "h” of from two to five hundredths of an inch (0.5 to 1.3 mm). There generally are only one or two such ribs 36 on a grip lip.
  • the film thickness "t" can be about the same as that in Figure 5, that is about two to three thou­sandths of an inch thick (0.05 to 0.08 mm), but the ridges are only about two to nine thousandths of an inch (0.05 to 0.23 mm) tall and they are spaced at a density of about 12 to 16 ridges per lineal inch (2.54 cm) of film across the grip strips width w, which in the illustration shown in Figure 6 gives a spacing x of about 0.06 to 0.08 inches (1.5 to 2.0 mm) from tip 23 to tip 23 of adjacent ridges 22.
  • Figure 7A - 7E Various modifications of this invention are shown in Figure 7A - 7E, for example, all on about the same scale (50 times actual size) as that used for Figures 5 and 6, the various ridge heights and ridge spacing. While all of these embodiments are operable (the embodiments of Figures 7B through 7E were actually made), if there was a preference it would be for the embodiment of Figure 7D.
  • the number (7) for Figure 7A, (12) for Figure 7B, (24) for Figure 7C, (16) for 7D, and (20) for 7E gives the number of ridges 22 or ridges 43 per inch (2.54 cm) of film being about 7 to 24 (preferably 12 to 16), 16 ribs per inch (2.54 cm) of film and with ridges from 0.002 to 0.009 inches (0.05 to 0.23 mm) tall preferably 0.003 to 0.005 inches (0.08 to 0.13 mm) tall. If one goes much below 0.002 inches (0.05 mm) in height ridges became difficult to feel. While a higher ridge may be easier to feel, it requires more material to form and is more difficult to form, as explained earlier.
  • a grip strip according to this invention provides a better feel, but it is more foolproof because one can grip the lip anywhere and find more than one ridge upon which to engage fingers for pulling zippers or other reclosable elements apart or holding the bag even with greasy fingers.
  • the prior art grip lip As against 63 percent for the grip strip of this invention, while 8 percent thought that they were about equally effective.
  • the numbers were 25 percent, 72 per­cent and 3 percent, respectively showing an overwhelming preference for the grip strip of this invention, espe­cially with greasy hands where the test is the most severe.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
  • Making Paper Articles (AREA)
EP86112924A 1985-09-26 1986-09-18 Wiederverschliessbarer Beutel mit Griffstreifen Expired - Lifetime EP0220476B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86112924T ATE63519T1 (de) 1985-09-26 1986-09-18 Wiederverschliessbarer beutel mit griffstreifen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US78112585A 1985-09-26 1985-09-26
US781125 1985-09-26

Publications (3)

Publication Number Publication Date
EP0220476A2 true EP0220476A2 (de) 1987-05-06
EP0220476A3 EP0220476A3 (en) 1988-09-07
EP0220476B1 EP0220476B1 (de) 1991-05-15

Family

ID=25121777

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86112924A Expired - Lifetime EP0220476B1 (de) 1985-09-26 1986-09-18 Wiederverschliessbarer Beutel mit Griffstreifen

Country Status (9)

Country Link
EP (1) EP0220476B1 (de)
JP (1) JPS6278062A (de)
KR (1) KR930001030B1 (de)
AR (1) AR247699A1 (de)
AT (1) ATE63519T1 (de)
BR (1) BR8604711A (de)
CA (1) CA1265105A (de)
DE (1) DE3679277D1 (de)
HK (1) HK70391A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0543737A1 (de) * 1991-11-22 1993-05-26 Minigrip, Incorporated Wiederverschliessbarer Kunststoffbeutel mit einem Reissverschluss ohne Schieber
EP0562774A1 (de) * 1992-03-25 1993-09-29 Ykk Corporation Biegsamer Reissverschluss
GB2271756A (en) * 1992-10-20 1994-04-27 Welton Packaging Limited Plastic bags with means facilitating opening
US6994535B2 (en) 2002-06-27 2006-02-07 S.C. Johnson Home Storage, Inc. Method and apparatus for forming a guide rib on a section of plastic film

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0644822Y2 (ja) * 1988-06-06 1994-11-16 株式会社生産日本社 合成樹脂製の袋体
JPH0619482Y2 (ja) * 1989-08-09 1994-05-25 株式会社生産日本社 合成樹脂製袋体
JPH0637946Y2 (ja) * 1989-09-07 1994-10-05 株式会社生産日本社 合成樹脂製袋体
JPH0398856A (ja) * 1989-09-12 1991-04-24 Kureha Plast Kk 減圧包装用プラスチックス袋
US7850368B2 (en) 2004-06-04 2010-12-14 S.C. Johnson & Son, Inc. Closure device for a reclosable pouch
JP4869666B2 (ja) * 2005-09-21 2012-02-08 カルソニックカンセイ株式会社 モータ構造およびモータのヨーク

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2240093A1 (de) * 1973-07-26 1975-03-07 Mobil Oil
DE1604599B2 (de) * 1966-05-03 1975-07-24 Alfred Dr. Kufstein Labek (Oesterreich) Beutel aus Kunststoff und Verfahren zu seiner Herstellung
US4363345A (en) * 1980-06-02 1982-12-14 Union Carbide Corporation Reclosable container
EP0089680A2 (de) * 1982-03-24 1983-09-28 First Brands Corporation Wiederschliessbarer Behälter mit anti-slip Rändern um das Öffnen und die Behandlung zu erleichtern

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK82383D0 (da) * 1982-03-24 1983-02-23 Union Carbide Corp Fremgangsmade til fremstilling af en genlukkelig beholder, samt ensadan genlukkelig beholder
US4736496A (en) * 1982-12-27 1988-04-12 The Dow Chemical Company Closure for thermoplastic containers

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1604599B2 (de) * 1966-05-03 1975-07-24 Alfred Dr. Kufstein Labek (Oesterreich) Beutel aus Kunststoff und Verfahren zu seiner Herstellung
FR2240093A1 (de) * 1973-07-26 1975-03-07 Mobil Oil
US4363345A (en) * 1980-06-02 1982-12-14 Union Carbide Corporation Reclosable container
EP0089680A2 (de) * 1982-03-24 1983-09-28 First Brands Corporation Wiederschliessbarer Behälter mit anti-slip Rändern um das Öffnen und die Behandlung zu erleichtern

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0543737A1 (de) * 1991-11-22 1993-05-26 Minigrip, Incorporated Wiederverschliessbarer Kunststoffbeutel mit einem Reissverschluss ohne Schieber
EP0562774A1 (de) * 1992-03-25 1993-09-29 Ykk Corporation Biegsamer Reissverschluss
US5369847A (en) * 1992-03-25 1994-12-06 Yoshida Kogyo K.K. Flexible fastener
GB2271756A (en) * 1992-10-20 1994-04-27 Welton Packaging Limited Plastic bags with means facilitating opening
GB2271756B (en) * 1992-10-20 1996-09-25 Welton Packaging Limited Bags
US6994535B2 (en) 2002-06-27 2006-02-07 S.C. Johnson Home Storage, Inc. Method and apparatus for forming a guide rib on a section of plastic film

Also Published As

Publication number Publication date
CA1265105A (en) 1990-01-30
AR247699A1 (es) 1995-03-31
DE3679277D1 (de) 1991-06-20
EP0220476A3 (en) 1988-09-07
ATE63519T1 (de) 1991-06-15
HK70391A (en) 1991-09-06
BR8604711A (pt) 1987-06-23
KR870002991A (ko) 1987-04-14
EP0220476B1 (de) 1991-05-15
KR930001030B1 (ko) 1993-02-13
JPS6278062A (ja) 1987-04-10
JPH0349822B2 (de) 1991-07-30

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