U.S. patent application number 11/512969 was filed with the patent office on 2008-03-27 for easy-opening package with slide.
Invention is credited to Mark R. Ellswood, Alan G. Shuman.
Application Number | 20080073349 11/512969 |
Document ID | / |
Family ID | 38846973 |
Filed Date | 2008-03-27 |
United States Patent
Application |
20080073349 |
Kind Code |
A1 |
Ellswood; Mark R. ; et
al. |
March 27, 2008 |
Easy-opening package with slide
Abstract
A package or container that includes a frame that defines an
access aperture and an opening mechanism associated with a pliable
sheet, which forms at least part of a cover for the access
aperture. The opening mechanism includes a set of spaced-apart tabs
that slideably engages with opposing edges or flanges of the frame.
As a user moves the opening mechanism along the frame, the opening
mechanism draws the pliable sheet over upon itself, and displaces
the sheet relative to the aperture to either open or close the
package.
Inventors: |
Ellswood; Mark R.;
(Alpharetta, GA) ; Shuman; Alan G.; (Canton,
GA) |
Correspondence
Address: |
KIMBERLY-CLARK WORLDWIDE, INC.;Catherine E. Wolf
401 NORTH LAKE STREET
NEENAH
WI
54956
US
|
Family ID: |
38846973 |
Appl. No.: |
11/512969 |
Filed: |
August 30, 2006 |
Current U.S.
Class: |
220/350 |
Current CPC
Class: |
B65D 77/30 20130101;
B65D 75/32 20130101 |
Class at
Publication: |
220/350 |
International
Class: |
B65D 43/20 20060101
B65D043/20 |
Claims
1. A packaging article comprising: a rigid or semi-rigid frame
defining an aperture with an edge flange; an opening mechanism
having spaced-apart first and second tabs that are adapted to
engage with either a track, a rail, a groove, a bead, or a keyway
or said edge flange of said frame and adapted to slide along said
edge flange; a first pliable sheet of material adapted to cover or
enclose said aperture, attached to said frame with a fastening
mechanism or adhesive, and having a part or end of said pliable
sheet associated with said opening mechanism, such that when said
opening mechanism is movable back and forth along said frame edge
flange, said pliable sheet extends and retracts over said aperture
of said frame.
2. The packaging article according to claim 1, wherein said edge
flanges are rectilinear with respect to each other.
3. The packaging article according to claim 1, wherein said frame
has substantially parallel edge flanges that oppose one
another.
4. The packaging article according to claim 1, wherein said frame
has sides or edges in either a V-shape, curved, arced, or
elliptical conformation.
5. The packaging article according to claim 1, wherein said frame
forms part of a rigid encasement.
6. The packaging article according to claim 1, further comprising a
second pliable sheet or envelope of material opposing said first
pliable sheet with said frame situated between said first and
second pliable sheets or envelope.
7. The packaging article according to claim 1, wherein said opening
mechanism includes a first and second platen situated between said
first and second tabs.
8. The packaging article according to claim 5; wherein said first
platen is adapted to engage against said second platen, securing
said pliable sheet therein between.
9. The packaging article according to claim 1, wherein said opening
mechanism has a slot adapted to receive and secure a part of said
pliable sheet.
10. The packaging article according to claim 1, wherein said first
and second tabs have either a substantially C-like-shape or
L-like-shape configuration that engages with said frame edge.
11. The packaging article according to claim 1, wherein said
spaced-apart first and second tabs are either joined together and
move together, or are operated independently of each other.
12. The packaging article according to claim 1, wherein said
spaced-apart first and second tabs each has a manual grip area.
13. The packaging article according to claim 12, wherein said first
and second tabs have a number of raised ridges or ribs.
14. The packaging article according to claim 1, wherein said frame
further comprises a track or guide for engaging said opening
mechanism, and said guide includes a keyway, a recessed groove, or
a raised bead that runs either continuously or discontinuously
along said frame.
15. A package comprising: a container; a frame defining an opening
of said container, said frame having opposing rectilinear,
substantially parallel sides; and an opening mechanism that engages
slideably with said substantially parallel sides, and said opening
mechanism has an associated pliable sheet of material that covers
said opening in said frame.
16. The package according to claim 15, wherein said pliable sheet
of material is associated with said opening mechanism, such that
when said opening mechanism is movable back and forth along said
frame, said pliable sheet opens and closes said container.
17. The package according to claim 15, wherein said pliable sheet
forms a seal against at least part of said frame.
18. The package according to claim 15, wherein said frame has a
guide for engaging with said opening mechanism.
19. The package according to claim 15, wherein said guide includes
a keyway, a recessed groove or a raised bead that runs along said
frame.
20. The package according to claim 15, wherein said opening
mechanism is manually operable.
21. The package according to claim 15, wherein said container is
formed of either a rigid, semi-rigid, or flexible material.
22. The package according to claim 15, wherein said frame and
container are made as a unitary piece.
23. The package according to claim 15, wherein said container is a
thermoformed piece.
24. The package according to claim 15, wherein said frame has an
overhanging flange that partially covers an edge of said pliable
sheet.
25. An article of manufacture or product contained within a
package, the package comprising: a container; a frame defining an
opening, said frame having opposing sides; and an opening mechanism
that engages slideably with said opposing sides, and said opening
mechanism has an associated pliable sheet of material that covers
said opening in said frame.
26. A container comprising a receptacle part and a lid part, said
receptacle part having a cavity for receiving stored contents in
said container, said receptacle part and lid part include
respective opposing portions adapted to slideably engage with one
another corresponding portions to permit relative slideable
movement of said lid and receptacle parts between open and closed
positions, and a displaceable flap forming a cover over an aperture
in said lid part, and which displaces with said slideable
movement.
27. The container according to claim 26, wherein said opposing
portions one of which is in the form of a groove and another of
which is in the form of an edge portion slideably engaged in said
groove.
28. The container according to claim 26, wherein said displaceable
flap is secured with a sliding opening mechanism forming part of
said lid part.
29. The container according to claim 26, wherein said container has
a major longitudinal axis and displaceable flap is oriented
substantially inline with said major longitudinal axis.
30. A packaging assembly comprising: a rigid or semi-rigid frame
having two substantially parallel lateral sides or edges, an
opening mechanism that slideably engages with each lateral side or
edge, said opening mechanism is associated with a pliable sheet
material with a seal along an interface of one side of said sheet
material against a surface of a flange of said frame, and said
frame forms an opening to part of a rigid cavity adapted for
receiving a product article.
31. The packaging assembly according to claim 30, wherein said
product article stored within said packaging article is a sealant
device for use in medical procedures.
32. The package assembly according to claim 30, wherein said frame
is substantially rectilinear.
33. The package assembly according to claim 30, wherein said
interface between said pliable sheet material and said surface of a
flange is sealable along a bead pattern that includes a pointed
feature, which concentrates shearing forces at an initial opening
site.
34. A method for opening a package article, the method comprising
the following steps: a) providing a package article having a rigid
or semi-rigid frame that defines an opening, an opener device that
has at least two spaced-apart tabs that slideably engage with a
track on either a face or an edge flange of said frame, said
spaced-apart tabs are secured to a pliable sheet material which
forms a part of a cover lid attached to said frame; b) moving said
spaced-apart tabs along said track on said frame from one end to an
opposing end of said frame; and c) retracting said pliable sheet
material from an interface with said frame.
35. The method according to claim 34, wherein said method further
includes the step of reclosing or resealing said package article by
performing steps b) and c) in reverse.
36. The method according to claim 34, wherein said method further
includes providing instruction to a user about how to either open
or close said packaging article.
37. The method according to claim 34, wherein said steps b) and c)
are performed manually.
Description
FIELD OF THE INVENTION
[0001] The present invention pertains to a package or container
having an easy-to-open aperture. In particular, the package has a
rigid or semi-rigid frame and an opening mechanism that retracts a
pliable sheet of material that covers the opening of the
package.
BACKGROUND OF THE INVENTION
[0002] In healthcare settings, such as clinics or hospitals, as
well as industrial or laboratory settings, workers can often
experience difficulty performing tasks that require fine manual
dexterity when wearing protective gloves. For example, a worker
often can be hard pressed to open and unwrap quickly a device,
instrument, or other product from a tightly sealed or sterile
package. The situation in an operating room (OR), intensive-care
unit (ICU), or other clinical environment can at times be quite
urgent. While gloved, a worker does not have time to search for or
fumble with the package wrapping to find conventional tabs or pulls
before tearing open the package. Hence, a need exists for a better,
faster, more easily opened product package. Moreover, this need
extends to a product package that is easy to manufacture and so
inexpensive to produce that it is economical to dispose of after
only a single or limited use. The present invention addresses these
needs, in addition to providing a novel method and device
configuration for opening a package of various shapes or forms for
any kind of product or article of manufacture.
SUMMARY OF THE INVENTION
[0003] Generally, the present invention relates to a package or
package assembly having a container and a closure. The package
includes a rigid or semi rigid frame that defines an aperture or
opening. A mechanism for opening the package is adapted to have at
least two opposing tabs or flanges that engage or "hug" an edge or
flange of the frame and enables the opening mechanism to slide or
run along the side or over a part of the surface of the frame. The
tabs can fit and work with a track such as a keyway or rail-like
groove or bead. The tabs may move independently of each other;
hence, they may operate independently of each other. In such an
embodiment, the coversheet material connects the two tabs, since a
piece or corner of the coversheet material is secured to each tab.
Alternatively, the tabs may be connected to each other with a
support or platen, such that their movement and operation is
coordinated for better efficiency. The tabs each may secure a
corner of a lid or coversheet material, but more preferred
embodiments employ a platen or support panel to secure the cover
material. The opening mechanism, also referred to as a "slider,"
has a mechanical feature, such as either a slot or clamp-like
configuration, or a male or female mating element, that
accommodates and engages with a groove or guide rail, respectively,
on the aperture frame. One end of a flexible or pliable sheet,
which forms at least part of the cover lid, is adhesively or
mechanically secured or otherwise fixed within the slot or clamped
in the slider. When pulled up or down along the aperture frame, the
slider draws back the sheet away from an edge of the frame, to
which the sheet is attached, for instance, by an adhesive. The
opener is adapted to slide or glide against opposing edges of the
frame. As the opener slides up and down the frame, the opener pulls
the pliable sheet of material either backward or forward, hence
opening or closing the packaging. The pliable material can be
attached or sealed against either the edge or a flange of the
frame, and may be able to reseal depending on the relative
tackiness of the adhesive. The overall dimensions and physical size
of the packaging can be configured to satisfy a user's needs--the
package maybe as small as to only require two finger tips to
operate or as large as to required the use of two hands to open and
close.
[0004] In particular embodiments, the enclosure on either or both
sides of the frame can be made from a relatively soft and flexible
material. On one side of the aperture frame is a flexible
coversheet used to open and close the package, and on the other
side in some cases the material may take the form of a bag or
envelope. In other embodiments, such as shown in the accompanying
illustrations, involve a shaped or three-dimensional cover or
plastic shell-like tray as one side of the packaging and the other
side is the flexible coversheet.
[0005] Manufacture of the present packaging can be a two or three
part assembly process, which comprises providing a rigid or
semi-rigid aperture frame that defines an opening to a cavity, such
as a flexible envelope or bag, or rigid or semi-rigid shell or
other like form, assembling a sliding component, such as tabs, with
a sheet material, or alternatively, attaching a pre-assembled
sliding component with sheet material to an associated track or
keyway on the frame, sealing the sheet material to the frame, such
that the sheet material covers the opening to the cavity. A
predetermined or selected product or article of manufacture should
be already positioned within the cavity before it is sealed within
the package, if the inventive package concept is employed in
commercial product sales or uses. Alternatively, the present
invention may be embodied in a package that may be made available
for sale for consumer or home uses to hold or store food, personal
products, or household items (e.g., like a storage bag). When
assembling the sliding member, it is envisioned according to an
embodiment that a first set of pin on the sliding member aligns
with another set of pins on a flange of the sliding component near
where an initial tear away from the cavity would begin, for folding
the membrane sheet material as something to grab and secure the
membrane sheet. The flange and pins may also act as a stopping
point for the sliding motion. As stoppers for the sliding
component, pins or knobs can also be formed as integral parts of
the aperture frame, and situated at either end of the frame.
[0006] The invention also relates to an article of manufacture or
product contained within the packaging container. Such articles can
be any variety of products, ranging for instance from various
medical devices or applicators, such as a skin-preparation
applicator or a syringe, to household items, food stuff, tools,
toys, personal care products, and other items that are sold or
stored in a package, such as a battery, nails or screws. The
container has a frame that defines an opening, and has opposing
sides. An opener device or mechanism engages with the two sides of
the frame along the edges or a surface by means of a track, keyway
(e.g., like a zip-lock storage bag), guide rails or runner flanges,
and the opener device has an associated pliable sheet of material
that covers the opening in the frame. When the opener device or
slider is displaced down the length of the package along the side
flanges, the pliable sheet is withdrawn and opens the package
interior.
[0007] The present invention also describes a method for operating
the package to open and/or reclose the package aperture. The method
for opening a package article includes the following steps: a)
providing a package article having a rigid or semi-rigid frame that
defines an opening, an opener device that has at least two
spaced-apart tabs that slideably engage with a track on either a
face or an edge flange of said frame, the spaced-apart tabs are
secured to a pliable sheet material which forms a part of a cover
lid attached to the frame; b) moving the spaced-apart tabs along
the track on said frame from one end to an opposing end of said
frame; and c) retracting the pliable sheet material from an
interface with the frame. The method further may include the step
of reclosing or resealing the package article by performing steps
b) and c) in reverse. Steps b) and c) can be performed manually.
The method further includes providing instruction to a user about
how to either open or close the packaging article.
[0008] Additional features and advantages of the present invention
will be revealed in the following detailed description. Both the
foregoing summary and the following detailed description and
examples are merely representative of the invention, and are
intended to provide an overview for understanding the invention as
claimed.
BRIEF DESCRIPTION OF FIGURES
[0009] FIGS. 1A and 1B are schematic representations of a basic
embodiment of the present invention. FIG. 1A shows an aperture
frame with a curvy shape, tabs engaging an edge or flange of the
aperture frame and attached to a flexible coversheet, which is
partially drawn back. FIG. 1B shows the aperture frame of FIG. 1A
flipped over. The housing is not shown.
[0010] FIGS. 2A-2C depict three views of a schematic of an
exemplary package according to an embodiment of the present
invention. FIG. 2A shows a first or ventral side of the package
straight on. FIG. 2B shows a side view of the package, and FIG. 2C
shows a second or dorsal side of the package straight on.
[0011] FIG. 3 illustrates another view of the embodiment depicted
in FIGS. 2A-2C, showing view from one end of the packaging looking
along its longitudinal axis.
[0012] FIG. 4 is a three-quarter view of the embodiment in FIGS.
2A-2C, with the first or ventral side oriented upward.
[0013] FIGS. 5A-5F are six views of an embodiment of an exemplary
opener mechanism adapted for sliding according to the present
invention. FIGS. 5A and 5B are first (ventral) and second (dorsal)
views of an opener mechanism that has two panels, and two
spaced-apart tabs for engaging with an aperture frame.
[0014] FIGS. 5C and 5D are dorsal and ventral views, respectively,
of the opener mechanism as the two panels are folded one over the
other. FIGS. 5E and 5F, respectively, are a head-on view and side
view of the opener mechanism.
[0015] FIG. 6 is an exploded view of three panel sections of a
sliding opener mechanism that permits the closure to be
resealed.
[0016] FIGS. 7A-7E show an embodiment of the bond pattern at the
interface between the frame of the packaging and the pliable sheet
material, in which a chevron (in place of a rounded edge as in
FIGS. 2A-2C) at one end is employed to concentrate force for
earlier opening of the device. The chevron is situated against the
prevailing force applied when a user opens the packaging by sliding
the opener mechanism.
[0017] Stoppers may be formed at either end of the package to
prevent the slider from disengaging from the edge or track of the
aperture frame when either opening or closing to either extremis of
the frame.
[0018] FIGS. 8A-8E show an embodiment having a product or article
of manufacture in a sealed package of the present invention,
corresponding to the FIGS. 2A-2C, 3, and 4. FIG. 8A shows the
ventral side of the package with the sliding opening mechanism and
its associated coversheet over the aperture of the frame. FIG. 8E
shows the article in the package with the second or dorsal side
oriented upward.
DETAILED DESCRIPTION OF THE INVENTION
[0019] While the present invention is described with reference to
the accompanying drawings for purposes of illustration, it is
understood that the invention is not limited to this package
embodiment, and other iterations are included within the scope of
the description. The present invention, in essence, involves a
packaging container that has an easy opening closure, which can be
reclosed. As partially depicted in FIGS. 1A and 1B, the package 10
has a rigid or semi-rigid frame 12 with an edge flange 14 defining
an aperture 16. The frame 12 is relatively flat and planar. An
opening mechanism 18 having spaced-apart first and second tabs or
flanges 20 engages with the edge flange 14 of the aperture frame 12
and is adapted to slide against the edge flange 14. The tabs may
function independently of each other or may be tied together with
either a resilient, or semi-rigid or rigid connector (not shown)
between the tabs. It is envisioned that such a connector can
regulate the relative operation of the tabs along a track or keyway
22, such that one tab does not outpace the other too much when
opening or closing the package. For certain applications or
configurations, it may be desirable for the connector to be able to
flex with the movement of the tabs. As shown, a stopper 24 is
situated at either end of the track 22 along either side of the
aperture frame 12. The slideably engaged opening mechanism 18 is
secured to a retractable coversheet 26 that functions as a lid of
cover to the aperture 26. As used herein, the terms "lidstock,"
"sheet," or "coversheet" refers to a material that may be a film,
nonwoven web, woven fabric or knit fabric.
[0020] The part of the packaging 10 that constitutes the housing 28
for the container can be made from a variety of materials and take
a variety of shapes or any form as the user may desire. In certain
embodiments, the frame can be part of a rigid tray or encasement of
the packaging. The container has a support or receptacle part for
different contents, such as an applicator for treatments or
medicaments or the like, or another device or article. The
receptacle can form a shell that commonly forms part of the
aperture frame, either an integrally molded piece or later attached
or fitted together. The shell, associated aperture frame, and
slider tabs and other parts of the assembled package article can be
made by extrusion or injection molding a variety of themoplastics,
such as polypropylene, polyethylene, polystyrene, polyethylene
terephthalate (PET), polyvinyl acetate, or the like.
[0021] Alternatively, the aperture frame 12 can be situated between
the first and second pliable sheets or envelope, wherein the second
pliable sheet or envelope of material opposes the first pliable
cover sheet of the package. In essence, the frame forms a firm
opening, such as depicted in FIGS. 1A and 1B, for a large bag-like
pouch. The pouch can be either pliant, floppy, or maintains its
shape. The pouch can be first folded and then extend as it is
filled with content items. The pouch can be closed or sealed by
bring the first pliable material over to cover the frame aperture.
The material of the pliable cover sheet can be a plastic or polymer
film, an elastomer membrane or film (e.g., natural rubber latex or
synthetic (ntrile) rubber latex), a filament-based or fibrous web
(e.g., paper), or a nonwoven web, or combinations or layers of such
materials. In some embodiments, the retractable sheet material may
be made from high-density polyethylene fibers, such as Dupont
Tyvek.RTM. brand protective material or various forms of calendared
nonwoven materials. For instance, Dupont TyVek.RTM. brand
protective material offers characteristics of paper, film and
fabric in one material. This balance of properties makes TyVek.RTM.
lightweight yet strong; vapor-permeable, yet water-, chemical-,
puncture-, tear- and abrasion-resistant. The pouch can be made from
materials similar to identical to the that used for the cover
sheet, in addition to either a textile material, like conventional
cotton, flax, or wool woven fabrics, or nonwoven web or fabric
(elastic or non-elastic), or thermoplastic polymer film sheet.
[0022] The packaging has the following basic constituents: a
container, a frame defining an opening, and an opening mechanism.
In certain embodiments, the frame has opposing rectilinear,
substantially parallel sides. The opening mechanism engages
slideably with the parallel sides. A pliable sheet of material,
which covers the opening in the frame, is associated with the
opening mechanism in a manner such that when the opening mechanism
is movable back and forth along said frame, the pliable sheet opens
and closes the container. The frame has a guide for engaging with
the opening mechanism, and the guide may include either a recessed
groove or a raised bead that runs, either continuously or
discontinuously, along the frame (e.g., on a planar surface or edge
flange). Desirably, the opening mechanism is easily operable by
hand. Typically, a user can grip the sides of the two tabs of the
slider between the thumb and a finger. For instance, when a person
grabs hold of the package and pulls the opening mechanism, the
pliable sheet is ripped at least partially from a seal that it
forms with the frame. The container can be formed of either a
rigid, semi-rigid, or flexible material, as long as the frame
maintains a shape. The container can be a thermoformed piece, which
in certain situations the frame and container can be made as a
unitary piece.
[0023] In certain embodiments, such as in FIGS. 2A-C, the package
10 includes a cavity defined by either a rigid or semi-rigid lip or
flange 14, which constitutes two substantially flat, parallel
sides, with the cavity in between. The cavity can be a shell-like
tray 28. The tray has a well 28a for receiving contents and a
peripheral flange 1 4a or edge surrounding the well. The
retractable coversheet (not shown) is attached to the frame 12
along the peripheral flange 14 with an adhesive or other mechanical
fastener. The opening mechanism binds or otherwise secures an end
of the coversheet. A part or end of the pliable sheet is associated
with the opening mechanism, such that when the opening mechanism is
movable back and forth along said frame edge flange, the pliable
sheet extends and retracts over the aperture of the frame. In other
words, the opening mechanism runs along the flange and draws the
coversheet open and close with the sliding motion of the opening
mechanism along the edges of the tray, hence permitting one to
reclose the package. When the fastening means is an adhesive layer
and utilizes an active or tacky adhesive, a peel strip can be used
to cover the adhesive until the cover sheet is ready to be applied
to a surface 11. In certain embodiments, the opposing sides are
desirably, rectilinear and substantially parallel to each other. As
used herein, "substantially parallel" refers to not deviating from
true parallel by more than about 5-10 degrees. In other
embodiments, the sides or edges of the aperture frame may relates
to each other in a variety of shapes, including V-like or V-shaped,
curved, arced, or elliptical forms, or other shapes as may be
desired, so long as the two opposing sides or edges do not diverge
from a bisector or mid-line oriented longitudinally and/or
equidistant between each side or edge by more than about 25-30% (up
to .about.33%) of the total maximum width of the frame.
[0024] In certain embodiments, the package may be constructed only
for either single, one-time use, or disposable use. As used herein,
the term "disposable" is not limited to single use articles but
also refers to articles that can be discarded if they become soiled
or otherwise unusable after a few uses. In other embodiments for
more durable use, one can reseal the package depending on degree of
tackiness of an adhesive or sealant bead along the flange where the
pliable sheet contacts the flange. As used herein, the term
"adhesive" refers to any substance that is adapted to bond at least
portions of one or more layers or plies of the sheet material to
the aperture frame by surface attachment. Such substances may be
organic, inorganic, natural, synthetic or combinations thereof.
Exemplary adhesives may be based on caseins, starches, gums,
mucilages, terpene resins (rosin), pitches, rubbers, celluloses,
rubber latexes, rubber solvents, waxes, thermoplastic resins,
thermosetting resins, epoxy, silicone polymers or the like. Several
commercially available adhesive and release paper systems can be
employed. The pliable lid coversheet should have release paper
properties. For instance, an untreated coversheet material may have
inherent release properties and may be peeled, or the coversheet
may be treated with a release surface-coating. Persons of skill in
the art understand without due experimentation, that the selection
of particular species of adhesives or the coversheet material or
the material from which the aperture frame is formed depends on the
relative compatibility of the adhesive and the materials.
[0025] The present invention encompasses embodiments in which the
adhesive layer may be a continuous layer or it may be
discontinuous. The adhesive may be applied in any configuration
including a continuous bead, various spray patterns, spatterings,
printings, swirl arrangements or the like.
[0026] In certain examples, pressure activated adhesives or
tackifier will tend to make resealing easier. Examples of a
tackifying adhesive that can be resealed include relatively low
glass-transition temperature (Tg) polymeric or other adhesives that
remains tacky under ambient conditions. A more rigid or dry
adhesive (i.e., high Tg) can define the limits to which the slider
is permitted to move, since the coversheet material thus adhered
will tend to be more difficult to remove and less likely to reseal.
An example of this kind of adhesive may include polyethylene
imine.
[0027] In embodiments of the invention, the adhesive layer may be
in the form of a strip of adhesive running along the peripheral
length of the flexible coversheet where it contacts an edge or
flange of the aperture frame. The adhesive layer may run along the
entire length dimension of at least one side of the coversheet. The
adhesive strip may have a width ranging from almost equal to the
width of the flange of the aperture fame to a relatively thin
strand or bead. Generally speaking, the adhesive strip may have a
width sufficient to provide good adhesion of the adsorbent pad to
surfaces in view of the peel strength or tack of the adhesive. For
example, some suitable pressure sensitive adhesives of the type
used in self-sealing envelopes and the like can be applied in a
strip. This tight contact generates a seal, barrier or block to
minimize gaps and spaces.
[0028] Desirably, the adhesive layer is a pressure sensitive
adhesive layer. The adhesive used in the present invention should
be able to bond the flexible sheet materials. It is also desired
that the adhesive maintain the bond when a laminate material is
extended or stretched in use. Examples of suitable adhesives that
may be used in the practice of the invention include Rextac 2730,
2723 available from Huntsman Polymers of Houston, Tex., as well as
adhesives available from Bostik Findley, Inc, of Wauwatosa, Wis.,
such as H9375-01. Suitable pressure sensitive adhesive include, but
are not limited to, hot-melt adhesives. As an example, useful
hot-melt garment adhesives include those available under the
designations 34-5602 (also known as "Easy Melt"); DF-5575;
170-3902; DM-523; 34-5516; 34-5512; MQ 7987; 53-4503 from National
Starch, Bridgewater, N.J. Other useful hot-melt garment adhesives
include those available under the designations HL-8141; D-58;
D-3944; HL-8112; HM-5717; HL-1375; and HM-1972 from HB Fuller, St.
Paul, Minn., and the adhesive available under the designation
910-373 also from Bostik Findley, Inc., of Wauwatosa, Wis.
[0029] As illustrated in FIGS. 5A-5F and 6, the opening mechanism
18 has spaced-apart flanges or tabs 20 that are adapted to engage
with the opposing edges or peripheral flanges 14, 14a of the
aperture frame 12. For example, in certain embodiments, the first
and second tabs can be configured to have either a portion that is
a substantially C-like-shape or L-like-shape (in profile) channel
27. The channel allows the tabs to engage with the aperture frame
edge from the outside. That is, the edge of the frame slides either
in between or over the C or L-shaped channels. Alternatively, the
slider can have either a male (protrusion) or female (recess)
mating element that fits, for example, with a keyway, groove, or
guide rail 22 along a surface 11 of the aperture frame 12. The
first and second flanges can have a number of raised ridges or ribs
25, which when situated on an inward facing surface of a tab 20 is
adapted to grip the frame or when situated on an outward facing
surface is for a person's hand to better grip the opening
mechanism. In addition a primary attribute for a single-use package
that is easier to open than current conventional configurations for
medical and lab use of sterile article or products, the package may
also have a re-sealable or re-closable package.
[0030] In desirable embodiments, the opening mechanism 18 includes
a first and second platen situated between the spaced-apart first
and second flanges. The first platen I is adapted to engage with
the second platen 2. As illustrated in the examples, the first and
second platens are connected to each other at a hinge y. One platen
is folded over the other, hence sandwiching and securing part of
the pliable sheet material therein between. According to certain
uses, the opening mechanism is adapted to enable one to reclose the
package, either by mere physical proximity of the cover sheet over
the opening or with sealing around the edges of the opening.
Depending on the tackiness or strength of glues or other adhesive
that originally held the pliable sheet material to the face of the
frame, one can run the opening mechanism back and reseal the sheet
against the surface of the frame. Alternatively, the opening
mechanism may have a slot adapted to receive and secure a part of
the pliable sheet.
[0031] According to an embodiment, the sliding opener piece would
have two flex points, not just one as depicted in the accompany
FIGS. 5A-5D. A first piece is intended to have the C or L sliding
design on the sides to pull back the lid stock. A second or middle
panel could have a design, name, logo, or description and attaches
both the first and a third panel. The third or top panel is adapted
to flex from the second panel in a design similar to how the first
and second panels are attached, near the outside edge parallel to
sliding rails. It would flex around to the backside of the formed
tray, be die cut to snap around the two dimples, or "stops", at
either the bottom or top of the slider rails. It would be assembled
so when the user opens the package, he/she would have to unsnap the
third panel and then pull the complete slider down the rails of the
package and re-close doing the opposite action.
[0032] As shown in FIG. 6, in another embodiment the opening
mechanism or slider has three panel sections that can be
interfolded one over the other, along lines x and y. In some
iterations, this folding is in an accordion-like fashion. A first
panel section 1 serves as a base for the opening device. The panel
section 1 has two flanges or tabs 20, one on either side, that are
adapted to engage with a rail or runner flange of the aperture
frame of the package. A slider tab 20, having a manual grip area on
the tab and a C-shaped channel, which fits against the lidstock of
the pliable coversheet material, is maneuvered to open and close
the package. In FIG. 6, in panel section 1, there are situated
three holes 30. These holes are desirably die cut and align with
pins 32 on panel section 2 of the sliding mechanism 18. Panel
section 2 is the front panel of the slider mechanism 18. The pins
32 are molded on a backside of panel section 2, and lock into the
holes 30 on in panel section 1. The coversheet or lidstock of the
package is secured between the holes and corresponding pins. Panel
section 3, according to the present embodiment, has a number of
holes 34 that snap over molded dimples or grooves on a backside of
a molded frame 12 or tray 28 when closing the package. This feature
permits one to reseal the package when a tacky adhesive is employed
at the interface 15 between the lidstock and aperture frame 12. One
way of assembling the slider to the package may involve the
following steps.
[0033] One aligns and slides panel 1 onto the rails of the rigid or
semi-rigid frame, folds lidstock over the straight, flat edge of
panel 2, then folds and secure panel 2 through the holes in panel 1
with the lidstock in between. The lidstock may have a number of
holes cut to correspond and receive the molded pins. Then, one
folds panel 3 over the backside, at one end, of the aperture frame
and secures holes over dimples 24.
[0034] In other embodiments, the sliding opener device can be
patterned similar to the closing mechanisms described in U.S.
Patent Application Publication No. 2002/0070220, or U.S. Pat. Nos.
6,325,239, 6,394,299, or 6,722,520, the contents of which are
incorporated herein by reference. In the present situation, the
rigid or semi-rigid flange of the frame can have a keyway, like in
the patents, comprising a groove or track in the flange to guide
the slider device, as it moves up and down the sides of the frame.
The slider can incorporate an inclined, wedge-like component or
pressure wheel that can be applied to secure or seal the pliable
sheet to the flange to allow for resealing of the sheet material
after one has opened the package. The resealing mechanism may be
configured to work in only one direction when the sliding component
is pulled back over the opening.
[0035] According to the present invention, an opener mechanism
spans across the frame, and has at least two flanges or wings on
either side that are adapted to grip and run along or slide against
the an edge of the frame. As shown in the accompanying figures, the
flanges are adapted to fit against rectilinear, opposing edges of
the frame. Attached at one end to the opener mechanism is a pliable
sheet that can be extended or retracted as the opener mechanism is
moved forward or backward along the frame. The pliable sheet has a
bead or area of adhesive around its edge to match and seal against
the edge of the frame. The frame can either be part of a rigid
plastic encasement, such as used with conventional packages, or
have on the other side another pliable covering, which can take the
form of a bag or other container for a product or article housed or
stored within the packaging. Either the plastic encasement or the
pliable bag can be form-fitting to the product within. For example,
FIGS. 8A-8E depict a non-limiting and exemplary package of the
present invention configured to house within an applicator 45 for a
surgical skin-preparation treatment. Much like a Roman blind, the
film or sheet that covers the opening in the frame is flexible and
will bend or fold upon itself as the opening mechanism is retracted
or drawn to one side, such as illustrated in FIGS. 1A and 1B.
[0036] In another embodiment, the container comprises a receptacle
part and a lid part. The receptacle part has a cavity 28 for
receiving stored contents in said container, and the receptacle
part and lid part include respective opposing portions adapted to
slideably engage with one another corresponding portions to permit
relative sliding movement of the lid and receptacle parts between
open and closed positions. A displaceable flap forms a cover over
an aperture in the lid part, and which moves aside or cures up on
it self with the sliding movement. The container has a major
longitudinal axis and displaceable flap is oriented substantially
parallel with said major longitudinal axis. The opposing portions
can take various forms. For example, one of which is in the form of
a groove and another of which is in the form of an edge portion
slideably engaged in the groove. The displaceable flap can be
secured with the sliding opening mechanism which forming part of
the lid part. In certain desirable embodiments, the cover sheet
material is attached or sealed to an edge of the semi-rigid or
rigid flange at an interface. The interface 15 between the pliable
coversheet material and the surface of the flange 11 is sealable
along a bead pattern that includes a pointed or chevron-like shape
40. The pointed chevron-like feature concentrates shearing forces
at an initial opening site, proximal to the initial position of the
opening device or sliding handle, as one peals the cover sheet and
makes opening the package initially easier. FIGS. 7A-E show an
example if a pointed chevron 40 similar to the apex of Tudor-style
Gothic arch, which enables one to concentrate stress forces on the
pliable sheet at the point of the chevron.
[0037] In another embodiment, a flange that extends from the frame
to partially overhang and cover the edge of the pliable sheet
material provides a physical barrier that prevents dust or other
contaminates from accessing or settling inside of the package when
the package is re-closed. The barrier protects the opening without
the need for an adhesive to secure the edge of the pliable sheet to
the frame. The flange covers along either the longitudinal or
lateral edges of the pliable sheet.
[0038] In certain commercial applications, the packaging can have
an obstruction to the slider tabs to prevent the package from being
opened accidentally, or by thieves who open and take the article
held in the package and leave an empty package carton. For
instance, the obstruction, one on either side of the aperture
frame, can be a piece of hard plastic or rubber that may require
cutting or breaking of a frangle piece from the slider before on
can open the package.
[0039] The present invention has been described by way of examples,
those skilled in the art will understood that the invention is not
limited to the embodiments specifically disclosed, and that various
modifications and variations can be made without departing from the
spirit and scope of the invention. Therefore, unless changes
otherwise depart from the scope of the invention as defined by the
following claims, they should be construed as included herein.
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