CA1269645A - Interlocking closure device having improved ease of occlusion - Google Patents
Interlocking closure device having improved ease of occlusionInfo
- Publication number
- CA1269645A CA1269645A CA000457747A CA457747A CA1269645A CA 1269645 A CA1269645 A CA 1269645A CA 000457747 A CA000457747 A CA 000457747A CA 457747 A CA457747 A CA 457747A CA 1269645 A CA1269645 A CA 1269645A
- Authority
- CA
- Canada
- Prior art keywords
- closure element
- male
- interlocking
- mils
- fastening 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.)
- Expired - Lifetime
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
-
- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
- A44B19/00—Slide fasteners
- A44B19/10—Slide fasteners with a one-piece interlocking member on each stringer tape
- A44B19/16—Interlocking member having uniform section throughout the length of the stringer
Landscapes
- Mechanical Engineering (AREA)
- Engineering & Computer Science (AREA)
- Slide Fasteners (AREA)
- Slide Fasteners, Snap Fasteners, And Hook Fasteners (AREA)
- Catching Or Destruction (AREA)
- Lock And Its Accessories (AREA)
- Push-Button Switches (AREA)
- Bag Frames (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
- Retarders (AREA)
- Peptides Or Proteins (AREA)
- Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
- Vending Machines For Individual Products (AREA)
- Connection Of Plates (AREA)
- Load-Engaging Elements For Cranes (AREA)
- Refuse Receptacles (AREA)
- Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
- Insertion Pins And Rivets (AREA)
- Clamps And Clips (AREA)
- Closures For Containers (AREA)
- Paper (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
Abstract
INTERLOCKING CLOSURE DEVICE
HAVING IMPROVED EASE OF OCCLUSION
Abstract A male closure element comprising a U-shaped channel element including a profile portion comprising a base portion having a pair of spaced-apart, parallelly disposed webs attached to the base portion and extending therefrom, the webs terminating in hooks comprising hook portions facing away from each other and hook projections facing toward each other. The closure element may be employed with interlocking fastening devices to provide thereto improved ease of occlusion characteristics.
HAVING IMPROVED EASE OF OCCLUSION
Abstract A male closure element comprising a U-shaped channel element including a profile portion comprising a base portion having a pair of spaced-apart, parallelly disposed webs attached to the base portion and extending therefrom, the webs terminating in hooks comprising hook portions facing away from each other and hook projections facing toward each other. The closure element may be employed with interlocking fastening devices to provide thereto improved ease of occlusion characteristics.
Description
INTERI,OCKING CLOSURE DEVICE
HAVING I PROVED EASE OF _CCLUSION
Cross Reference to Related Application This application is related to copendiny application Canadian Serial No. 457,7~8 filed June 28, 1984 for Interlocking Closure Device Having Controlled Separation and Improved Ease of Occlusion.
BACKGROU~D OF THE INVENTIQN
Field of the Invention This invention relates to closure fastening devices, and more particularly, to inteLlocking closure fastening devices having improved occlusion characteristics.
Di~cussion of ~he Prior Art Generally, closuLe fastening devices for use with plastic bags and the like are well-known. In addition, manufacturing methods for closure devices made of plastic material are generally known.
Closure fastening devices for use with plastic bags should be relatively easy to open and close and also provide a satisfactory ~eal. However, it has been found that some prior art interlocking closure fastening devices suffer fLom a tenden~y of the male and female closure elements to straddle each other and to not occlude during attempted occlusion as opposed to a normally occluded position. Such a non-occluded, and also straddled condi~ion of the male and female closure elements on a plastic bag precludes occlusion of the ~137~7-~
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clo6ure elements and rQ6ul~ in the bag con~ent~ not being securely contained within the bag.
Con~equen~ly, it would be desirable to provide mo~e posi~ive guidance of the opposing closure elements such that the elements engage more repeatedly into the normally occluded condition, and that the element~ be inhibited from engaging into a non-occluded and 6traddled condition.
Therefore, there i6 a continuing need to provide closure fastening device~ which overcom2 ~he above-noted disadvantages.
SummarY of_the Invention In acco~dance with ~his invention, generally ~peaking, there i~ provided an interlocking closure fa tening device having an occluded height of be~ween about 60 mil~ and about 85 mils, preferably about 70 mil6, and a corre~ponding occluded width of between about 95 mils and about 125 mils, preferably about 110 mils, comprising a female closure element and a male closure element, formed 6uch that the male and female closure elements engage in interlocking relation~hip, wherein the male closure element includes a profile portion comprising a ba~e portion having a pair of spaced-apart, parallelly di~posed webs attached to the ba~e po~ion and extending therefrom, 6aid web~ terminating in hoo~s facing away f~om each othe~. The female closure element includefi a profile portion comprisin~ a base portion with a pai~ of ~paced-apart, parallelly di~posed web~ integrally attached to the base po~tion and spaced to pas6 over the web~ on the male clo6ure . , element, whe~ein the webs on the female C108U~e element ~erminate in hooks facing toward each o~her ~o engage the hook6 on the male clo~ure element.
More specifically, in accordance with ~his invention, the male closure element comprise a U-~haped channel element including a profile portion compri6ing a ba~e portion having a pair of spaced-apart, parallelly disposed webs attached to the ba6e portion and extending therefrom, said web~
terminating in hook6 facing away from each othe~.
The hook portion on each web of the male clo~u~e element comprise~ a hook portion and a hook projection. The two hook po~tion6 face away Prom each other, and the two hoo~ projection~ Pace toward each other. The two hook projections facing towa~d each other reduce the width of the tran~ve~se opening between the web6 of the male clo6ure elemen~
in the a~ea of the hooks, thereby inhibiting the tendensy for either of the webs of the Pemale cIosure element to enter the opening between the web6 of the male closu~e element. The male closure elemen~ of this invention thus reduce~ the potential for 6traddling when occluding an interlocking closure Pastening device comprising a male clo~ure element and a female clo6ure element, thereby re6ulting in greater ease of occlu~ion and the obtainment of ~ecure o~clusion.
A further embodiment oP thi~ invention i8 the aforede~cribed male clo~ure element having a ba~e portio~ which i6 ~esiliently bendable.
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Anothe~ embodiment of this ;nvention iz a containe~ including ~he aforedezcribed male clo~uLe elament.
Thi~ invention accordingly compri~e~ the featules of ~onst~uction~ combination of elem~nts, and arrangemen~ of part6 which will be e~emplified in a con~truction hereinafte~ ~et forth.
Brief De6cription of the Dr w nq~
Fig. 1 i~ a perspect;ve view of a flexible container including a clo~u~e ~a~tening device in acco~dance with the invention:
Fig. ~ i~ a sectional view of a non-occluded clo~ure fa~ening device in accordance with the prioe art in a ~traddled position;
Fi~. 3 ifi a ~ecSional view of the clo~ure fa6tening device of Fig. Z in a mi~aligned position:
Fig. 4 is a sectional view of the clo6ure fa6tening device o~ Fig. 2 in a p~operly aligned pofiition just prio~ to occlusion:
Fig. 5 is a ~ectional view of the closure fa6tening device of Fig. 2 in an occluded po~ition;
Fig. 6 is a ~ectional view o~ a male closu~e element in accoldance with thi6 invention.
Fig. 7 is a sectional view of a closu~e fastening device in accordance with thi~ invention in a mîsaligned po~ition:
Fig. 8 i~ a sectional view of a clo~ure fastening device in acco~dance with this invention in a prope~ly aligned po6ition ju6t prio~ to occlusion:
' Fig. 9 i~ a sec~ional view of a clo~uLe fa6tening device in accordance with thi invention in an occluded po~ition.
Detailed De~cription Qf the Invention In carrying the invention into effect, certain embodimen~ have been ~elected ~or îllu6tration in the accompanying drawing~ and for de~cription in this specification, ~eference being had to Fig~ o 9.
Fig~ 1 6hows a typical flexible container 10 formed from a pla6tic film which ig folded at bottom por~ion 11 and i~ heat 6ealed along the side edge~ 12 to form a pouch or bag. The ~idewall~ 13 may extend beyond a closure fa~tening device 14 to p~ovide grasping section~ 16 and 17 to simpl;fy the opening of the clo~ure fa~tening device 14.
A prior art closure device is 6hown in the ~raddled, mi6aligned, properly aligned, and occluded po&itionfi in Figs. 2, 3, 4 and 5, respectively.
As shown in Fig. 2, a male profile portion 18 is connected to a flange po~tion 19 and includes a base portion 20, a pair of ~paced~apart, parallelly disposed fir6t webs 21 extending in a generally normal direction from the base portion 20, and male hook portions 22 extending from webs 21 and facing a~ay from each other. The male hook portion~
each have a rounded crown surface 23, and 23', which generally serve to guide the hook por~ions fo~
occlusion with the emale hook portions o~ a ~ating closure element. A fe~ale pro~ile portion 2g i~
connected to flange portion 25 and includes a ba~e , .
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portion 26, a pair of ~paced-apart, parallelly di6posed web~ 27 extending in a generally normal direction from the ba~e portion Z6 and female hook portions 28 extending from webs 27 and facing towards each othe~. The female hook portion~ each have a rounded crown ~urface 29, and ~9', which se~ve to guide the hook por~ions for occlu~ion wi~h the male hook por~ion6 of a mating closure elemen~.
Profile poetion~ 18 and 24, shown in Fig. 2, may be separately formed and thereaft~r connec~ed to a ~ilm which forms ~idewall~ 13, or they may be integrally focmed wi~h sidewall6 13 a6 shown in Fig. 1.
A~ can be 6een from Fig. 2, when a non-occluded clo6ure fa6tening de~ic~ in acco~dance wi~h the p~ior art i8 in a ~traddle po~ition. ju~t prio~ to attempted occlu~ion, the web and hook portion6 of one of the clo6ure elements will dro~
into the void or open channel between the web and hook portion~ of the o~her clo6ure element and occluzion of the mating clo6ure slement~ doe6 not occur. This straddle po6ition of the channel closure elemen~ on a pla~tic bag re~ul~6 in th~ bag content6 not being 6ecurely contained within the bag.
Fig. 3 depict6 the non-occluded clo~ure fa~tening device of Fig. 2 in a mi~aligned po~ition ju6t prior to attempted occlu~ion. ~hen male profile portion 18 i6 mi~aligned with female profile portion 24 ju~t prior to attempted occlu~ion of the interlo~king clo~u~e fa~tening device, ~urface 23l of one of the two male hook portions 22 and surface 29' of one of the two female hook portions 28 are in a balance such that ~urface 23' and surface 29' can ~ 7 -61ide either in~o an occluding po~ition, a~ shown in Fig. 4, or into a ~traddling po~ition, a~ ~hown in Fig~ 2.
To a66ure occlusion of prior art interlocking clo6ure fa~teni.ng device~, the male profile portion 18 and ~emale profile por~ion 24 mu~t alway~ be in proper tran6ver~e alignment ju~t prior to attempted occlu~ion of the clo~ure device~
a~ ~hown in Fig. 4. That i8, ~urface~ 23 and 23' of both male hook portions 22 should be in a laterally inward po~ition with re~pect to 6urface~ 29 and 29' of both female hook portions 28. When con~acting pre66Ura i6 applied to interlocking clo6ure fa6tening devices aligned in ~he position shown in Fig. 4, the male profile por~ion 18 and the female proflle portion 24 are inteclocked in the normally occluded position shown in Fig. 5.
In accordance with this invention, when outside ~urface~ 32 of the male hook portion~ 22' are contoured a~ shown in ~igs. 6, 7, 8 and 9, it ha~ been found that such a construction i8 more for-giving to misalignment and provide~ more po6itive guidance of the mating clo~ure element6, and the element~ engage more easily and accurately into the desired occluded po6ition compared to prior art interlocking closure fastening devices.
In Fig. 6, the male profile portion 18' in acco~dance with this invention is disclo6ed in detail wherein hook projection~ 31 on hook portions 22' can be seen extending ~rom the broken linefi 23"
shown therein to form a reduced gap between hook poL~ions 22' to thereby phyfiically hinde~ the .
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~traddlin~ of a male closure element and a female closure element a6 previously shown in Fig. 2.
Accordangly, the de~ired hindrance of the ~raddle po6ition that could occur between a male closure element ~nd a female clo6ure element i8 obtained, and likewi&e, the other de~ired charac~eri~tic of ease of occlu~ion i~ enabled by providing a guiding action for the hoo~ ~urfa~e6 of ~he female clo6ure element to 61ide along the out~ide 6urfacez 32 of hook portion~ 22l of the male ~lo~ure element. Such guidance help~ direct the male and female closure elements into their proper occluded position~ A8 will be appreciated by tho~e 6killed in the art, hook projection6 31 may be any suitable length ~o as to virtually clo6e the gap or void between them and preclude entcance thecein of the hook and web po~tion6 of ~he female clo~ure element, thereby virtually in6uring occlu~ion and eliminating the pos~ibili~y of st~addling between the male and female closure elements.
Manufacturing consideration6 may limit the extent to which the hoo~ projection# 31 are brought clo6e together the~eby ~educing the guidance effect between the male clo6ure element of thi~ invention and a conventional interlocking female closure element. Sati~factory re~ult6 have been obtained when the hook projections 31 have length6, on a proportionate scale to the occluded heigh~ and occluded width of the interlocking clo6ure fa6tening device, of between about 5 mil6 and about B mil~ as measured between the dotted lines 33 6hown in Fig.
S. However, it i~ preferred that hook pro3ection6 31 ~-13767 `
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_ 9 _ have lengths, on a propo~tionate 6cale to the occluded height and occluded width of the in~e~locking clo~ure fastening device, o-E be~wesn about 5 mil~ and about 20 mil~, as ~uch lengths provide ~he aforementione~ desired characteristic~
to interlocking clo~ure fastening devices.
In accordance with a preferred embodiment of this invention~ certain part~ of the hook portion~ 22' of the male clo6ure element o~ this invention have length~, on a proportionate ~cale ~o the occluded height and occluded width of the interlocking clo6ure fa~tening device, of between about 5 mils and about 10 milfi as measured between the dotted line~ 34 6hown in Fig. 6.
As employ0d herein, the term llpLopOrtiOnate" i6 to indicate the relative proportions of the clo~ure elements of the interlocking clo6ure fastening device when the male and female closure element6 ale occluded. Thus, when the interlocking closure fastening device of this invention has an occluded height of between about 60 mil~ and about 85 mils, and an occluded width of bet~een about 95 mils and about 12S mils, the length~ of the hook po~tion~ of the male clo~ure element are between about 5 mils and about 10 mil8, and the lengths of the hook p~ojections of the male clo~ure element are between about 5 mil6 and about 20 mil6 on a proportionate 6cale to the occluded height and occluded width of the interlocking clo~ure fa6tening device. Accordingly, when the occluded height and occluded width o~ the interlocking clo~ure fa~tening device of this invention a~e either in~rea6ed or decrea~ed, then the length6 of the hook portion~ and hook projection~ of ~he male clo6ure element ~hould be proportionately increa6ed or decrea~ed ~o maintain the relative proportions of the cl06ure elements.
Fig 7 ~how6 a male closure element in accordance with this invention in a mi~aligned position with respect to a female closure elemen~
just prior to occlu~ion therewith. I~ can be seen from Fig. 7 that even though the male clo~ure element and the female clos~lre ele~ent are misaliqned, a~ much a~ 6hown in Fig. 3, they will be guided into the de~ired occluding alignment by hook peojections 31 extending toward each other from male hook portionx 22' for ultimate interlocking occlusion.
In Fig. 8 it can be seen that when the male clo~ure element in accordance with thi6 invention i8 properly aligned with a female closure element just prior to occlusion, ~uch will not only lead to greater ease of occlu~ion therebetween, but will also inhibit the movement of the male closure element and the female clo6ure element into a non-occluded ~traddle ~o~ition.
Contac~ing pre66ure applied to interlocking clo6ure fa~tening devices aligned in the po~ition ~hown in Fig. 8 will interlock the inventive male profile portion 18' and the female profile portion 24 in the normally occluded po6ition ~hown in Fig. 9.
It should be noted that during the occlusion operation o~ ~emale profile portion 24 and male profile portion 18', at least one of the base .
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portions 26 and 20 flexes, or the web~ 27 and 21 flex, 01 ~he hooks 28 and ~2~ flex, or a combination of these parts flex to achieve occlusion.
Generally, the clo~ure fa~tening device of this inven~ion may be formed from thermoplastic material~ such a6 polyethylene, polypropylene, nylon, or the like, or from a combination thereof.
Thus, resins or mixtures of resins such ~s hi~h density polyethylene, medium density polyethylene and low density polyethylene may be employed to prepare the novel closure device of this invention.
The closure fastening device of the invention may be manufactured by extrusion, or other known me~hods of producing such device~. The closure fastening device can be manufactured as individual clo6ure elements for later attachment ~o a film, or the clo6ure ~roPile portions can be manufactuLed integral with a film. In addition, the closure fastening device can be manufactured with or without flange poLtions on one o~ both of the clo~ure elements depending upon intended use or expected additional manufacturing operations.
In the practice of the in~tant invention, the closure fastening device may be integrally formed with the sidewalls of a container, or connec~ed to a container, o~ to a film to be formed into a container, by the u~e of any of many known method6. A thermoelectric device can be applied to a film in contact with a flange portion of a closure element or the thermoelectric device can be applied to a ~ilm in contact with the basQ portion of a closure element having no flange portion, to cause a D-1~767 ;': .~ :, ' :' tran~fer of heat through the film to pLoduce melting at the interface of the ~ilm and the flange por~ion or base poction of the closure element. On cooling, the inte~face region join~ the ~ilm and ~he clo6ure element. The thermoelectIic device can be heated rotary disc6, or re~is~ance heated slide wirea~ or traveling heater bands, or the like. The connection between the film and the closure element can also be established by the u~e of hot melt adhe~ives, or hot 3et~ of air to the interface, or ultra~onic heating, or other known method~. Generally, the closure fa~tening device and films can be made from a heat sealable material ~o that a containe~ can be formed economically by heat sealing the aforementioned component~ to form the container.
The clo~ure fa6tening de~ice of this invention provide~ many advantage~ for use in containers to be u~ed by con~umers. For example, the closure device i8 ea6y to occlude and doe6 not tend to twi~t and dis~ort during attempted occlu~ion a~ in the ca~e of some prior art device~ such as the arrowhead-6haped device employed with a container available under the tradename ZIPLOC from Dow Chemical Co~pany of Midland, Michigan. This provides convenience in the occluding operation.
In addition, the C1Q6Ure fastening device i8 more difficult to deocclude from the inside of the containers than from the outside of the containers thereby providing more secure sontainment of goods such as food products. The profile portion6 of the closure device have approximately uniform cro6s-6ection~. Thi~ not only simplifies the manufacturing of the device but it also contributes to the phy~ical ~lexiblity of the device, which i~ a desirable property.
A clo~ure fa~tening device in accordance ~ith ~hi~ invention can al~o be used as a flexible ~traw because a good seal at the engaged 6urfaces i8 possible and a compartment defined by the occludsd clo~ure elements provides a pas6ageway which does not collapse when the closure ~a~tening 2evice i8 bent moderately.
Generally, the closure fastening device of thi~ invention can be manufactured in a variety of forms to suit the intended use. In addition, the male and female closure elements can be position2d on oppo~ite 6ides of a film. Such an embodiment would be 6uited for enwLapping an object or a collection of object~ ~uch as wire~. Generally, the male and female clo~ure element~ on a film ~hould be pa~allel to each other, but ~his would depend on the intended use.
We wi~h it to be understood that we do not de~ire to be limited to the exact detail~ of construction ~hown and described, foL alternative embodiment~ will occur to a per60n skilled in the art.
Having thus de6cribed the invention, what we elaim a6 new and desi~e to be secured by Letter~
Patent i8 as follow~:
HAVING I PROVED EASE OF _CCLUSION
Cross Reference to Related Application This application is related to copendiny application Canadian Serial No. 457,7~8 filed June 28, 1984 for Interlocking Closure Device Having Controlled Separation and Improved Ease of Occlusion.
BACKGROU~D OF THE INVENTIQN
Field of the Invention This invention relates to closure fastening devices, and more particularly, to inteLlocking closure fastening devices having improved occlusion characteristics.
Di~cussion of ~he Prior Art Generally, closuLe fastening devices for use with plastic bags and the like are well-known. In addition, manufacturing methods for closure devices made of plastic material are generally known.
Closure fastening devices for use with plastic bags should be relatively easy to open and close and also provide a satisfactory ~eal. However, it has been found that some prior art interlocking closure fastening devices suffer fLom a tenden~y of the male and female closure elements to straddle each other and to not occlude during attempted occlusion as opposed to a normally occluded position. Such a non-occluded, and also straddled condi~ion of the male and female closure elements on a plastic bag precludes occlusion of the ~137~7-~
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clo6ure elements and rQ6ul~ in the bag con~ent~ not being securely contained within the bag.
Con~equen~ly, it would be desirable to provide mo~e posi~ive guidance of the opposing closure elements such that the elements engage more repeatedly into the normally occluded condition, and that the element~ be inhibited from engaging into a non-occluded and 6traddled condition.
Therefore, there i6 a continuing need to provide closure fastening device~ which overcom2 ~he above-noted disadvantages.
SummarY of_the Invention In acco~dance with ~his invention, generally ~peaking, there i~ provided an interlocking closure fa tening device having an occluded height of be~ween about 60 mil~ and about 85 mils, preferably about 70 mil6, and a corre~ponding occluded width of between about 95 mils and about 125 mils, preferably about 110 mils, comprising a female closure element and a male closure element, formed 6uch that the male and female closure elements engage in interlocking relation~hip, wherein the male closure element includes a profile portion comprising a ba~e portion having a pair of spaced-apart, parallelly di~posed webs attached to the ba~e po~ion and extending therefrom, 6aid web~ terminating in hoo~s facing away f~om each othe~. The female closure element includefi a profile portion comprisin~ a base portion with a pai~ of ~paced-apart, parallelly di~posed web~ integrally attached to the base po~tion and spaced to pas6 over the web~ on the male clo6ure . , element, whe~ein the webs on the female C108U~e element ~erminate in hooks facing toward each o~her ~o engage the hook6 on the male clo~ure element.
More specifically, in accordance with ~his invention, the male closure element comprise a U-~haped channel element including a profile portion compri6ing a ba~e portion having a pair of spaced-apart, parallelly disposed webs attached to the ba6e portion and extending therefrom, said web~
terminating in hook6 facing away from each othe~.
The hook portion on each web of the male clo~u~e element comprise~ a hook portion and a hook projection. The two hook po~tion6 face away Prom each other, and the two hoo~ projection~ Pace toward each other. The two hook projections facing towa~d each other reduce the width of the tran~ve~se opening between the web6 of the male clo6ure elemen~
in the a~ea of the hooks, thereby inhibiting the tendensy for either of the webs of the Pemale cIosure element to enter the opening between the web6 of the male closu~e element. The male closure elemen~ of this invention thus reduce~ the potential for 6traddling when occluding an interlocking closure Pastening device comprising a male clo~ure element and a female clo6ure element, thereby re6ulting in greater ease of occlu~ion and the obtainment of ~ecure o~clusion.
A further embodiment oP thi~ invention i8 the aforede~cribed male clo~ure element having a ba~e portio~ which i6 ~esiliently bendable.
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Anothe~ embodiment of this ;nvention iz a containe~ including ~he aforedezcribed male clo~uLe elament.
Thi~ invention accordingly compri~e~ the featules of ~onst~uction~ combination of elem~nts, and arrangemen~ of part6 which will be e~emplified in a con~truction hereinafte~ ~et forth.
Brief De6cription of the Dr w nq~
Fig. 1 i~ a perspect;ve view of a flexible container including a clo~u~e ~a~tening device in acco~dance with the invention:
Fig. ~ i~ a sectional view of a non-occluded clo~ure fa~ening device in accordance with the prioe art in a ~traddled position;
Fi~. 3 ifi a ~ecSional view of the clo~ure fa6tening device of Fig. Z in a mi~aligned position:
Fig. 4 is a sectional view of the clo6ure fa6tening device o~ Fig. 2 in a p~operly aligned pofiition just prio~ to occlusion:
Fig. 5 is a ~ectional view of the closure fa6tening device of Fig. 2 in an occluded po~ition;
Fig. 6 is a ~ectional view o~ a male closu~e element in accoldance with thi6 invention.
Fig. 7 is a sectional view of a closu~e fastening device in accordance with thi~ invention in a mîsaligned po~ition:
Fig. 8 i~ a sectional view of a clo~ure fastening device in acco~dance with this invention in a prope~ly aligned po6ition ju6t prio~ to occlusion:
' Fig. 9 i~ a sec~ional view of a clo~uLe fa6tening device in accordance with thi invention in an occluded po~ition.
Detailed De~cription Qf the Invention In carrying the invention into effect, certain embodimen~ have been ~elected ~or îllu6tration in the accompanying drawing~ and for de~cription in this specification, ~eference being had to Fig~ o 9.
Fig~ 1 6hows a typical flexible container 10 formed from a pla6tic film which ig folded at bottom por~ion 11 and i~ heat 6ealed along the side edge~ 12 to form a pouch or bag. The ~idewall~ 13 may extend beyond a closure fa~tening device 14 to p~ovide grasping section~ 16 and 17 to simpl;fy the opening of the clo~ure fa~tening device 14.
A prior art closure device is 6hown in the ~raddled, mi6aligned, properly aligned, and occluded po&itionfi in Figs. 2, 3, 4 and 5, respectively.
As shown in Fig. 2, a male profile portion 18 is connected to a flange po~tion 19 and includes a base portion 20, a pair of ~paced~apart, parallelly disposed fir6t webs 21 extending in a generally normal direction from the base portion 20, and male hook portions 22 extending from webs 21 and facing a~ay from each other. The male hook portion~
each have a rounded crown surface 23, and 23', which generally serve to guide the hook por~ions fo~
occlusion with the emale hook portions o~ a ~ating closure element. A fe~ale pro~ile portion 2g i~
connected to flange portion 25 and includes a ba~e , .
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.
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portion 26, a pair of ~paced-apart, parallelly di6posed web~ 27 extending in a generally normal direction from the ba~e portion Z6 and female hook portions 28 extending from webs 27 and facing towards each othe~. The female hook portion~ each have a rounded crown ~urface 29, and ~9', which se~ve to guide the hook por~ions for occlu~ion wi~h the male hook por~ion6 of a mating closure elemen~.
Profile poetion~ 18 and 24, shown in Fig. 2, may be separately formed and thereaft~r connec~ed to a ~ilm which forms ~idewall~ 13, or they may be integrally focmed wi~h sidewall6 13 a6 shown in Fig. 1.
A~ can be 6een from Fig. 2, when a non-occluded clo6ure fa6tening de~ic~ in acco~dance wi~h the p~ior art i8 in a ~traddle po~ition. ju~t prio~ to attempted occlu~ion, the web and hook portion6 of one of the clo6ure elements will dro~
into the void or open channel between the web and hook portion~ of the o~her clo6ure element and occluzion of the mating clo6ure slement~ doe6 not occur. This straddle po6ition of the channel closure elemen~ on a pla~tic bag re~ul~6 in th~ bag content6 not being 6ecurely contained within the bag.
Fig. 3 depict6 the non-occluded clo~ure fa~tening device of Fig. 2 in a mi~aligned po~ition ju6t prior to attempted occlu~ion. ~hen male profile portion 18 i6 mi~aligned with female profile portion 24 ju~t prior to attempted occlu~ion of the interlo~king clo~u~e fa~tening device, ~urface 23l of one of the two male hook portions 22 and surface 29' of one of the two female hook portions 28 are in a balance such that ~urface 23' and surface 29' can ~ 7 -61ide either in~o an occluding po~ition, a~ shown in Fig. 4, or into a ~traddling po~ition, a~ ~hown in Fig~ 2.
To a66ure occlusion of prior art interlocking clo6ure fa~teni.ng device~, the male profile portion 18 and ~emale profile por~ion 24 mu~t alway~ be in proper tran6ver~e alignment ju~t prior to attempted occlu~ion of the clo~ure device~
a~ ~hown in Fig. 4. That i8, ~urface~ 23 and 23' of both male hook portions 22 should be in a laterally inward po~ition with re~pect to 6urface~ 29 and 29' of both female hook portions 28. When con~acting pre66Ura i6 applied to interlocking clo6ure fa6tening devices aligned in ~he position shown in Fig. 4, the male profile por~ion 18 and the female proflle portion 24 are inteclocked in the normally occluded position shown in Fig. 5.
In accordance with this invention, when outside ~urface~ 32 of the male hook portion~ 22' are contoured a~ shown in ~igs. 6, 7, 8 and 9, it ha~ been found that such a construction i8 more for-giving to misalignment and provide~ more po6itive guidance of the mating clo~ure element6, and the element~ engage more easily and accurately into the desired occluded po6ition compared to prior art interlocking closure fastening devices.
In Fig. 6, the male profile portion 18' in acco~dance with this invention is disclo6ed in detail wherein hook projection~ 31 on hook portions 22' can be seen extending ~rom the broken linefi 23"
shown therein to form a reduced gap between hook poL~ions 22' to thereby phyfiically hinde~ the .
.
, :
~traddlin~ of a male closure element and a female closure element a6 previously shown in Fig. 2.
Accordangly, the de~ired hindrance of the ~raddle po6ition that could occur between a male closure element ~nd a female clo6ure element i8 obtained, and likewi&e, the other de~ired charac~eri~tic of ease of occlu~ion i~ enabled by providing a guiding action for the hoo~ ~urfa~e6 of ~he female clo6ure element to 61ide along the out~ide 6urfacez 32 of hook portion~ 22l of the male ~lo~ure element. Such guidance help~ direct the male and female closure elements into their proper occluded position~ A8 will be appreciated by tho~e 6killed in the art, hook projection6 31 may be any suitable length ~o as to virtually clo6e the gap or void between them and preclude entcance thecein of the hook and web po~tion6 of ~he female clo~ure element, thereby virtually in6uring occlu~ion and eliminating the pos~ibili~y of st~addling between the male and female closure elements.
Manufacturing consideration6 may limit the extent to which the hoo~ projection# 31 are brought clo6e together the~eby ~educing the guidance effect between the male clo6ure element of thi~ invention and a conventional interlocking female closure element. Sati~factory re~ult6 have been obtained when the hook projections 31 have length6, on a proportionate scale to the occluded heigh~ and occluded width of the interlocking clo6ure fa6tening device, of between about 5 mil6 and about B mil~ as measured between the dotted lines 33 6hown in Fig.
S. However, it i~ preferred that hook pro3ection6 31 ~-13767 `
:` :
_ 9 _ have lengths, on a propo~tionate 6cale to the occluded height and occluded width of the in~e~locking clo~ure fastening device, o-E be~wesn about 5 mil~ and about 20 mil~, as ~uch lengths provide ~he aforementione~ desired characteristic~
to interlocking clo~ure fastening devices.
In accordance with a preferred embodiment of this invention~ certain part~ of the hook portion~ 22' of the male clo6ure element o~ this invention have length~, on a proportionate ~cale ~o the occluded height and occluded width of the interlocking clo6ure fa~tening device, of between about 5 mils and about 10 milfi as measured between the dotted line~ 34 6hown in Fig. 6.
As employ0d herein, the term llpLopOrtiOnate" i6 to indicate the relative proportions of the clo~ure elements of the interlocking clo6ure fastening device when the male and female closure element6 ale occluded. Thus, when the interlocking closure fastening device of this invention has an occluded height of between about 60 mil~ and about 85 mils, and an occluded width of bet~een about 95 mils and about 12S mils, the length~ of the hook po~tion~ of the male clo~ure element are between about 5 mils and about 10 mil8, and the lengths of the hook p~ojections of the male clo~ure element are between about 5 mil6 and about 20 mil6 on a proportionate 6cale to the occluded height and occluded width of the interlocking clo~ure fa6tening device. Accordingly, when the occluded height and occluded width o~ the interlocking clo~ure fa~tening device of this invention a~e either in~rea6ed or decrea~ed, then the length6 of the hook portion~ and hook projection~ of ~he male clo6ure element ~hould be proportionately increa6ed or decrea~ed ~o maintain the relative proportions of the cl06ure elements.
Fig 7 ~how6 a male closure element in accordance with this invention in a mi~aligned position with respect to a female closure elemen~
just prior to occlu~ion therewith. I~ can be seen from Fig. 7 that even though the male clo~ure element and the female clos~lre ele~ent are misaliqned, a~ much a~ 6hown in Fig. 3, they will be guided into the de~ired occluding alignment by hook peojections 31 extending toward each other from male hook portionx 22' for ultimate interlocking occlusion.
In Fig. 8 it can be seen that when the male clo~ure element in accordance with thi6 invention i8 properly aligned with a female closure element just prior to occlusion, ~uch will not only lead to greater ease of occlu~ion therebetween, but will also inhibit the movement of the male closure element and the female clo6ure element into a non-occluded ~traddle ~o~ition.
Contac~ing pre66ure applied to interlocking clo6ure fa~tening devices aligned in the po~ition ~hown in Fig. 8 will interlock the inventive male profile portion 18' and the female profile portion 24 in the normally occluded po6ition ~hown in Fig. 9.
It should be noted that during the occlusion operation o~ ~emale profile portion 24 and male profile portion 18', at least one of the base .
. .
.
portions 26 and 20 flexes, or the web~ 27 and 21 flex, 01 ~he hooks 28 and ~2~ flex, or a combination of these parts flex to achieve occlusion.
Generally, the clo~ure fa~tening device of this inven~ion may be formed from thermoplastic material~ such a6 polyethylene, polypropylene, nylon, or the like, or from a combination thereof.
Thus, resins or mixtures of resins such ~s hi~h density polyethylene, medium density polyethylene and low density polyethylene may be employed to prepare the novel closure device of this invention.
The closure fastening device of the invention may be manufactured by extrusion, or other known me~hods of producing such device~. The closure fastening device can be manufactured as individual clo6ure elements for later attachment ~o a film, or the clo6ure ~roPile portions can be manufactuLed integral with a film. In addition, the closure fastening device can be manufactured with or without flange poLtions on one o~ both of the clo~ure elements depending upon intended use or expected additional manufacturing operations.
In the practice of the in~tant invention, the closure fastening device may be integrally formed with the sidewalls of a container, or connec~ed to a container, o~ to a film to be formed into a container, by the u~e of any of many known method6. A thermoelectric device can be applied to a film in contact with a flange portion of a closure element or the thermoelectric device can be applied to a ~ilm in contact with the basQ portion of a closure element having no flange portion, to cause a D-1~767 ;': .~ :, ' :' tran~fer of heat through the film to pLoduce melting at the interface of the ~ilm and the flange por~ion or base poction of the closure element. On cooling, the inte~face region join~ the ~ilm and ~he clo6ure element. The thermoelectIic device can be heated rotary disc6, or re~is~ance heated slide wirea~ or traveling heater bands, or the like. The connection between the film and the closure element can also be established by the u~e of hot melt adhe~ives, or hot 3et~ of air to the interface, or ultra~onic heating, or other known method~. Generally, the closure fa~tening device and films can be made from a heat sealable material ~o that a containe~ can be formed economically by heat sealing the aforementioned component~ to form the container.
The clo~ure fa6tening de~ice of this invention provide~ many advantage~ for use in containers to be u~ed by con~umers. For example, the closure device i8 ea6y to occlude and doe6 not tend to twi~t and dis~ort during attempted occlu~ion a~ in the ca~e of some prior art device~ such as the arrowhead-6haped device employed with a container available under the tradename ZIPLOC from Dow Chemical Co~pany of Midland, Michigan. This provides convenience in the occluding operation.
In addition, the C1Q6Ure fastening device i8 more difficult to deocclude from the inside of the containers than from the outside of the containers thereby providing more secure sontainment of goods such as food products. The profile portion6 of the closure device have approximately uniform cro6s-6ection~. Thi~ not only simplifies the manufacturing of the device but it also contributes to the phy~ical ~lexiblity of the device, which i~ a desirable property.
A clo~ure fa~tening device in accordance ~ith ~hi~ invention can al~o be used as a flexible ~traw because a good seal at the engaged 6urfaces i8 possible and a compartment defined by the occludsd clo~ure elements provides a pas6ageway which does not collapse when the closure ~a~tening 2evice i8 bent moderately.
Generally, the closure fastening device of thi~ invention can be manufactured in a variety of forms to suit the intended use. In addition, the male and female closure elements can be position2d on oppo~ite 6ides of a film. Such an embodiment would be 6uited for enwLapping an object or a collection of object~ ~uch as wire~. Generally, the male and female clo~ure element~ on a film ~hould be pa~allel to each other, but ~his would depend on the intended use.
We wi~h it to be understood that we do not de~ire to be limited to the exact detail~ of construction ~hown and described, foL alternative embodiment~ will occur to a per60n skilled in the art.
Having thus de6cribed the invention, what we elaim a6 new and desi~e to be secured by Letter~
Patent i8 as follow~:
Claims (35)
1. A male closure element for an interlocking closure fastening device, said male closure element comprising a U-shaped channel element including a profile portion comprising a base portion having a pair of spaced-apart, parallelly disposed webs integrally attached to said base portion and extending therefrom, said webs terminating in hooks, said hooks comprising hook portions facing away from each other and hook projections extending toward each other from said hook portions to form a reduced gap between the hook portions, said hook projections being characterized as providing guidance for occlusion of said closure element with another interlocking closure element.
2. A male closure element in accordance with claim 1 wherein at least one of said hooks is resiliently bendable.
3. A male closure element for an interlocking closure fastening device having an occluded height of between about 60 mils and about 85 mils, and a corresponding occluded width of between about 95 mils and about 125 mils, said male closure element comprising a U-shaped channel element including a profile portion comprising a base portion having a pair of spaced-apart, parallelly disposed webs integrally attached to said base portion and extending therefrom, said webs terminating in hooks, said hooks comprising hook portions facing away from each other and hook projections extending toward each other from said hook portions to form a reduced gap between the hook portions, said hook projections being characterized as providing guidance for occlusion of said closure element with anther interlocking closure element.
4. A male closure element in accordance with claim 3 wherein said hook projections have lengths, on a proportionate scale to the occluded height and occluded width of said interlocking closure fastening device, of between about 5 mils and about 20 mils.
5. A male closure element in accordance with claim 3 wherein said hook projections have lengths, on a proportionate scale to the occluded height and occluded width of said interlocking closure fastening device, of between about 5 mils and about 8 mils.
6. A male closure element in accordance with claim 3 wherein said hook projections have lengths, on a proportionate scale to the occluded height and occluded width of said interlocking closure fastening device, of between about 5 mils and about 10 mils.
7. A male closure element in accordance with claim 3 wherein at least one of said hooks is resiliently bendable.
8. An interlocking closure fastening device comprising a female closure element and a male closure element formed such that said male closure element and said female closure element engage in interlocking relationship said male closure element including a profile portion comprising a base portion having a pair of spaced-apart, parallelly disposed webs attached to said base portion and extending therefrom, said webs terminating in hooks comprising hook portions facing away from each other and hook projections extending toward each other from said hook portions to form a reduced gap between the hook portions to thereby physically hinder the straddling of the male closure element and female closure element, said hook projections being characterized as providing guidance for occlusion of said male closure element with said female closure element: said female closure element including a profile portion comprising a base portion having a pair of spaced-apart, parallelly disposed webs attached to said base portion and spaced to pass over said webs on said male closure element, wherein said webs on said female closure element terminate in hooks extending toward each other to engage said hooks on said male closure element.
9. An interlocking closure fastening device in accordance with claim 8 wherein said base portion of said male closure element is resiliently bendable.
10. An interlocking closure fastening device in accordance with claim 8 wherein said base portion of said female closure element is resiliently bendable.
11. An interlocking closure fastening device in accordance with claim 8 wherein at least one of said webs of said male closure element is resiliently bendable.
12. An interlocking closure fastening device in accordance with claim 3 wherein at least one of said webs of said female closure element is resiliently bendable.
13. An interlocking closure fastening device in accordance with claim a wherein at least one of said hooks of said male closure element is resiliently bendable.
14. An interlocking closure fastening device in accordance with claim B wherein at least one of said hooks of said female closure element is resiliently bendable.
15. An interlocking closure fastening device having an occluded height of between about 60 mils and about 85 mils, and a corresponding occluded width of between about 95 mils and about 125 mils, said interlocking closure fastening device comprising a female closure element and a male closure element formed such that said male closure element and said female closure element engage in interlocking relationship; said male closure element including a profile portion comprising a base portion having a pair of spaced-apart, parallelly disposed webs attached to said base portion and extending therefrom, said webs terminating in hooks comprising hook portions facing away from each other and hook projections extending toward each other from said hook portions to form a reduced gap between the hook portions, said hook projections being characterized as providing guidance for occlusion of said male closure element with said female closure element; said female closure element including a profile portion comprising a base portion having a pair of spaced-apart, parallelly disposed webs attached to said base portion and spaced to pass over said webs on said male closure element, wherein said webs on said female closure element terminate in hooks extending toward each other to engage said hooks on said male closure element.
16. An interlocking closure fastening device in accordance with claim 15 wherein said hook projections have lengths, on a proportionate scale to the occluded height and occluded width of said interlocking closure fastening device, of between about 5 mils and about 20 mils.
17. An interlocking closure fastening device in accordance with claim 15 wherein said hook projections have lengths, on a proportionate scale to the occluded height and occluded width of said interlocking closure fastening device, of between about S mils and about 8 mils.
18. An interlocking closure fastening device in accordance with claim 15 wherein said hook projections have lengths, on a proportionate scale to the occluded height and occluded width of said interlocking closure fastening device, of between about 5 mils and about 10 mils.
19. An interlocking closure fastening device in accordance with claim 15 wherein said base portion of said male closure element is resiliently bendable.
20. An interlocking closure fastening device in accordance with claim 15 wherein said base portion of said female closure element is resiliently bendable.
21. An interlocking closure fastening device in accordance with claim 15 wherein at least one of said webs of said male closure element is resiliently bendable.
22. An interlocking closure fastening device in accordance with claim 15 wherein at least one of said webs of said female closure element is resiliently bendable.
23. An interlocking closure fastening device in accordance with claim 15 wherein at least one of said hooks of said male closure element is resiliently bendable.
24. An interlocking closure fastening device in accordance with claim 15 wherein at least one of said hooks of said female closure element is resiliently bendable.
25. A container including two sidewalls and an interlocking closure fastening device comprising a female closure element and a male closure element formed to engage said female closure element in interlocing relationship, said male closure element including a profile portion comprising a base portion having a pair of spaced-apart, parallelly disposed webs integrally attached to said base portion and extending therefrom, said webs terminating in hooks comprising hook portions facing away from each other and hook projections extending toward each other from said hook portions to form a reduced gap between the hook portions, said hook projections being characterized as providing guidance for occlusion of said male closure element with said female closure element:
said female closure element including a profile portion comprising a base portion having a pair of spaced-apart, parallelly disposed webs integrally attached to said base portion and spaced to pass over said webs on said male closure element, wherein said webs on said female closure element terminate in hooks extending toward each other to engage said hooks on said male closure element.
said female closure element including a profile portion comprising a base portion having a pair of spaced-apart, parallelly disposed webs integrally attached to said base portion and spaced to pass over said webs on said male closure element, wherein said webs on said female closure element terminate in hooks extending toward each other to engage said hooks on said male closure element.
26. A container in accordance with claim 25 wherein at least one of said hooks of said male closure element is resiliently bendable.
27. A container in accordance with claim 25 wherein at least one of said hooks of said female closure element is resiliently bendable.
28. A container including two sidewalls and an interlocking closure fastening device having an occluded height of between about 60 mils and about 85 mils, and a corresponding occluded width of between about 95 mils and about 125 mils, said interlocking closure fastening device comprising a female closure element and a male closure element formed to engage said female closure element in interlocking relationship, said male closure element including a profile portion comprising a base portion having a pair of spaced-apart, parallelly disposed webs integrally attached to said base portion and extending therefrom, said webs terminating in hooks comprising hook portions facing away from each other and hook projections extending toward each other from said hook portions to form a reduced gap between the hook portions, said hook projections being characterized as providing guidance for occlusion of said male closure element with said female closure element; said female closure element including a profile portion comprising a base portion having a pair of spaced-apart, parallelly disposed webs integrally attached to said base portion and spaced to pass over said webs on said male closure element, wherein said webs on said female closure element terminate in hooks extending toward each other to engage said hooks on said male closure element.
29. A container in accordance with claim 28 wherein said hook projections have lengths, on a proportionate scale to the occluded height and occluded width of said interlocking closure fastening device, of between about 5 mils and about 20 mils.
30. A container in accordance with claim 28 wherein said hook projections have lengths, on a proportionate scale to the occluded height and occluded width of said interlocking closure fastening device, of between about 5 mils and about 8 mils.
31. A container in accordance with claim 28 wherein said hook projections have lengths, on a proportionate scale to the occluded height and occluded width of said interlocking closure fastening device, of between about 5 mils and about 10 mils.
32. A container in accordance with claim 28 wherein at least one of said hooks of said male closure element is resiliently bendable.
33. A container in accordance with claim 28 wherein at least one of said hooks of said female closure element is resiliently bendable.
34. A container in accordance with claim 28 wherein said female closure element forms an integral part of one of said two sidewalls, and said male closure element forms an integral part of the other of said two sidewalls.
35. A container in accordance with claim 28 wherein said female closure element is connected to a film forming one of said two sidewalls, and said male closure element is connected to a film forming the other of said two sidewalls.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US50938883A | 1983-06-30 | 1983-06-30 | |
| US509,388 | 1983-06-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1269645A true CA1269645A (en) | 1990-05-29 |
Family
ID=24026457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000457747A Expired - Lifetime CA1269645A (en) | 1983-06-30 | 1984-06-28 | Interlocking closure device having improved ease of occlusion |
Country Status (12)
| Country | Link |
|---|---|
| EP (1) | EP0130601B1 (en) |
| JP (1) | JPS60501704A (en) |
| AT (1) | ATE35403T1 (en) |
| AU (1) | AU559370B2 (en) |
| CA (1) | CA1269645A (en) |
| DE (1) | DE3472386D1 (en) |
| DK (1) | DK160698C (en) |
| ES (6) | ES289497Y (en) |
| FI (1) | FI78436C (en) |
| NZ (1) | NZ208747A (en) |
| PT (1) | PT78830B (en) |
| WO (1) | WO1985000342A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4922588A (en) * | 1983-12-30 | 1990-05-08 | First Brands Corporation | Single hinge interlocking closure profile configuration |
| US4829641A (en) * | 1987-06-22 | 1989-05-16 | First Brands Corporation | Enhanced color change interlocking closure strip |
| AU9151701A (en) * | 2000-10-10 | 2002-04-22 | Lester Harold Golding-Griessel | A coupling device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1307672A (en) * | 1969-04-01 | 1973-02-21 | Goffton Ltd | Jointing or securing of sheet materials |
| US4212337A (en) * | 1978-03-31 | 1980-07-15 | Union Carbide Corporation | Closure fastening device |
| US4186786A (en) * | 1978-09-29 | 1980-02-05 | Union Carbide Corporation | Colored interlocking closure strips for a container |
-
1984
- 1984-06-27 AU AU31054/84A patent/AU559370B2/en not_active Ceased
- 1984-06-27 WO PCT/US1984/000973 patent/WO1985000342A1/en active IP Right Grant
- 1984-06-27 JP JP84502590A patent/JPS60501704A/en active Pending
- 1984-06-28 CA CA000457747A patent/CA1269645A/en not_active Expired - Lifetime
- 1984-06-29 EP EP84107590A patent/EP0130601B1/en not_active Expired
- 1984-06-29 AT AT84107590T patent/ATE35403T1/en not_active IP Right Cessation
- 1984-06-29 DE DE8484107590T patent/DE3472386D1/en not_active Expired
- 1984-06-29 ES ES1984289497U patent/ES289497Y/en not_active Expired
- 1984-07-02 PT PT78830A patent/PT78830B/en not_active IP Right Cessation
- 1984-07-02 NZ NZ208747A patent/NZ208747A/en unknown
-
1985
- 1985-02-27 FI FI850807A patent/FI78436C/en not_active IP Right Cessation
- 1985-02-28 DK DK092785A patent/DK160698C/en not_active IP Right Cessation
- 1985-06-17 ES ES1985287497U patent/ES287497Y/en not_active Expired
- 1985-06-17 ES ES1985287498U patent/ES287498Y/en not_active Expired
- 1985-06-17 ES ES1985287495U patent/ES287495Y/en not_active Expired
- 1985-06-17 ES ES1985287499U patent/ES287499Y/en not_active Expired
- 1985-06-17 ES ES1985287496U patent/ES287496Y/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| ES287499Y (en) | 1986-06-16 |
| ES287498U (en) | 1986-04-16 |
| DK92785D0 (en) | 1985-02-28 |
| FI78436C (en) | 1989-08-10 |
| ES287497Y (en) | 1986-12-01 |
| DK92785A (en) | 1985-02-28 |
| EP0130601B1 (en) | 1988-06-29 |
| ES287495Y (en) | 1986-12-01 |
| ES287497U (en) | 1986-04-16 |
| EP0130601A1 (en) | 1985-01-09 |
| DE3472386D1 (en) | 1988-08-04 |
| FI850807L (en) | 1985-12-28 |
| WO1985000342A1 (en) | 1985-01-31 |
| ES289497Y (en) | 1986-12-01 |
| ES287495U (en) | 1986-04-16 |
| FI78436B (en) | 1989-04-28 |
| ES289497U (en) | 1986-04-16 |
| DK160698C (en) | 1991-09-23 |
| DK160698B (en) | 1991-04-08 |
| NZ208747A (en) | 1987-03-31 |
| JPS60501704A (en) | 1985-10-11 |
| ES287496Y (en) | 1986-12-01 |
| FI850807A0 (en) | 1985-02-27 |
| PT78830A (en) | 1984-08-01 |
| ES287498Y (en) | 1986-12-01 |
| ES287499U (en) | 1985-11-16 |
| ES287496U (en) | 1986-04-16 |
| ATE35403T1 (en) | 1988-07-15 |
| PT78830B (en) | 1986-07-15 |
| AU559370B2 (en) | 1987-03-05 |
| AU3105484A (en) | 1985-02-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |