JPH08310558A - Stress concentration open hole forming means for sealed container and package - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a new and improved dispenser package for a fluid. SOLUTION: A substantially flat and relatively rigid sheet 12, one or more channel-shaped protrusion members 26 made of slender and thin wall, and one or more perforations 24 crossing the protrusion member, are formed in a package. A pouch containing a fluid is formed therein. When a pressure is applied on the package, a hole is opened.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a dispenser package for fluid substances and the like, and in particular it can be conveniently applied to single-use containers and packages, where such containers and packages can be opened with one hand, The present invention relates to a new and improved shape and structure of a stress concentrating aperture forming member of a container and a dispenser package that contains and dispenses a quantity of a flowable substance that can dispense the contained substance.

[0002]

2. Description of the Prior Art Various attempts have been made to provide dispenser packages which can contain and dispense the quantity of fluid material required for a single use.

One type of package is a relatively thin plastic, a foil or a laminated plastic and a pillow pouch or bag formed of foil. These packages are used as containers for ketchup, mustard, other seasonings, and household items such as hair conditioners, dyes and creams. Although this type of packaging is widely used, it can be disliked by consumers. To use the containment material, the pouch must be held in one hand and the tearing action and force applied in the other hand. It is extremely difficult to create the initial tear and break the envelope seal. Moreover, the first tear not only causes the laminated foil and / or plastic material to tear in an often uncontrolled manner, but also before the user applies the containment material and before the tearing operation is complete. The holding pressure exerted by one hand of the person pushes the containment substance out of the envelope. It is difficult to open, and you may have to bite the pouch to open it. Opening such packages tends to be disliked, fingernails can come off, teeth can be scraped, and some other problems can occur. Another drawback is that the user must use both hands when opening the container. Opening such packages is virtually impossible for the sick, arthritis patients and other handicapped users.

Another package is a top stripper cap used in butter, margarine, syrup, sauces, salad dressings and the like. This package also requires good eyesight and dexterity, and must be opened with both hands. Similar packages such as coffee cream have the same drawbacks as the pouches or bags described above. Many users cannot open it.

Another type of package is an unsealed corrugated package of paper used for salt and / or pepper that, when folded along a cutting line across the corrugated portion, contains the salt or salt contained therein. Form pores through which other solid materials can flow. These salt packages usually have a polyethylene liner, which does not tear or break. These packages are only able to dispense dry solid flowing substances by gravity, not wet or liquid flowing substances accurately, and utilize hydraulic or compressive forces to accommodate the contained liquids. Cannot be guided from the container.

Redmond US Pat. No. 3,986,6
No. 40 (hereinafter referred to as the '640 patent) describes a set amount of containment material in one hand motion without the aforementioned difficulties of opening the cover or tearing the wrapping or pouch. A dispenser package is shown that is an improvement over the conventional packaging structure described above that allows for dispensing. In the '640 patent, the fluid material is contained within a pouch formed by a flexible sheet material and a sheet of relatively stiff material, which has a crease line or cutting pattern inscribed in the rigid material, When stress is applied to a sheet of rigid material,
The rigid material breaks at the crease lines. When the above-mentioned sheet is folded into a “V” shape, the crease line or cutting pattern located at the apex of the angle formed by both sides of the “V” is broken, and at least one opening is formed, which makes the “V” relatively rigid. When the flexible pouch is compressed by the sides of the pouch, the flowable substance is extruded. Therefore, it can be opened and dispensed with the containment substance with only one movement of one hand.

Redmond et al., US Pat. No. 4,49
No. 3,574 (hereinafter referred to as the '574 patent) discloses a redmond having at least one stress concentrating protrusion member that displaces at least a portion of a fold line or fold pattern from a plane of a relatively rigid member. A dispenser package similar to that of the '640 patent is shown. A preferred embodiment of the protruding member is a substantially pyramidal shape that displaces the fold line across its entire length, which is substantially symmetrical about the fold line. The purpose of the stress concentrating protrusion member is to concentrate the stress on the crease line when bent to "V" and break the protrusion locally at the crease line.
The purpose is to create apertures through which the fluid material is distributed.

The constructions of the '640 and' 574 patents have been successfully marketed. However,
In the case of the package, it has been found that, due to the fluid material contained therein, a small amount of the contained material may be ejected from the opening when the folding pressure is applied when the fold line is broken. Redmond U.S. Pat. No. 4,611,71
No. 5 (hereinafter referred to as the '715 patent) provides a shallow channel behind the fold line that connects two pockets located on either side of the fold line, thereby reducing spouting problems. .

Redmond US Pat. No. 4,724,9
No. 82 (hereinafter the '982 patent) discloses that at least one asymmetric substantially pyramidal stress concentrating means can be used to simultaneously dispense two different substances from an isolated chamber. Another similar dispenser package construction to the previously mentioned Redmond patent is shown.

While the dispenser package described above has some advantages over conventional packaging systems, the package described above also has some drawbacks. Although superior to conventional pouch style packages, the aforementioned packages are more costly than conventional pouch packages due to rigidity and barrier requirements and material costs. In addition, care must be taken that the pyramidal shaped stress concentrators project outwardly from the surface of the dispenser package, which during packaging, stacking, and transport, does not cause the dispenser package to deform and open.

[0011]

OBJECTS OF THE INVENTION It is therefore an object of the present invention to provide a new and improved dispenser package for flowable substances.

Another object is to provide a new and improved stress concentrating aperture forming structure for a fluid material dispenser package that overcomes the deficiencies of conventional stress concentrating aperture forming protrusion members.

Another object is to break the rigid sheet material used in dispenser packages when both ends of the package are folded into a "V" shape, making the thin, flexible and economical sheet material relatively rigid. It is to provide a new and improved stress concentrating means that can be used as flat sides and flexible pocket sides.

Another object is to provide a new packaging system that can be constructed of thin materials, requires only small amounts of material, thereby reducing costs and also environmental benefits. Especially.

Another object is the formation of stress-concentrated open holes in a dispenser package that can dispense a lumpy substance (chopped onion, salad with pepper and tomato, salad dressing with Locfor cheese, etc.). To provide the structure.

Another object is to provide a new and improved stress concentrating aperture forming structure for a dispenser package which can be combined with a dual or multiple package of fluid material which must be isolated prior to use. is there.

Another purpose is to isolate them from each other before dispensing.
It is an object of the present invention to provide a new and improved stress concentrating aperture forming structure for a dispenser package that is capable of simultaneously dispensing one or more separate flowing substances.

Another object is without a snapping action,
New and improved with relatively smooth opening, which reduces or eliminates the possibility of squirting and eliminates the need for a channel structure in the pouch of the package described in the '715 patent. The present invention provides a stress concentration hole forming structure.

Another object is a new and improved dual or multiplex which is capable of accurately dispensing uniform or non-uniform amounts of two or more flowing substances when the substances have the same or different viscosities. To provide a distribution package.

Another object of the present invention is to provide a stress concentration hole forming structure of a dispenser package which does not inadvertently open during transportation or handling and is not damaged by heat when containing a high temperature substance. It is in.

Another object is a new and improved which can be mounted and sealed in a conventional package or container of fluid material and which can be converted into a package or container which can be opened with one hand. Another object of the present invention is to provide a stress concentration hole forming structure.

Another object is to provide a new and improved stress concentrating aperture forming structure that projects inwardly from the plane of a relatively rigid sheet material, and outwardly from the surface of the package member containing the stress concentrating structure. There is nothing that sticks out.

[0023]

SUMMARY OF THE INVENTION Briefly stated, the present invention can be attached to or formed integrally with a container of fluid material or other dispenser package to open with one hand, to break the packaging material and to contain the contained material. The present invention relates to a new and improved stress concentration aperture forming structure that can be smoothly distributed. Exactly rupturable materials by the stress concentrating means of the present invention include materials such as metal foil, polyester, EVOH, polypropylene, polyethylene, varex, or nylon from low cost, easily rupturable materials such as polystyrene. It covers tough barrier webs such as a single sheet of laminate or coextrudate. The stress concentrating means of the present invention can not only reduce the cost of the packaging material, but can also provide an improved dual or multi-chamber package. In addition, the thickness of the packaging material can be reduced, thereby realizing cost reduction.

In a preferred embodiment of the invention, the dispenser package is a relatively stiff flat sheet having a tough high barrier layer secured to at least one side and a relatively stiff sheet secured to one side of the relatively stiff sheet. Flexible sheet forming an enclosed pouch in close proximity to a side surface and a cutting pattern or crease line, or otherwise formed on a relatively rigid sheet along its lateral centerline, or otherwise And a relatively rigid sheet fold line or one, two or more adjacent parallel stress concentrating aperture forming projection members that displace at least a portion of the fold pattern inward. , Each protruding member is an elongated, thin-walled channel-shaped structure that, when broken, causes the structure to expand. It is preferred.

The elongated channel-shaped structure is arranged at a right angle to the fold line, and several stress concentrating means are provided in parallel and close to each other, thereby forming a stress concentrating aperture forming pattern and easily breaking the container. When broken, it expands and can easily release the contained material. In a preferred embodiment, in the cross section of the channel structure, it has a round bottom end and a pointed or rounded top end. In the preferred embodiment, the crease lines intersect only some channel-shaped stress concentrator members. Thus, for example, a fold line may traverse or be scored in an internal stress concentrating channel that breaks the member, and the external stress concentrating means may act as a stiffener or guard channel, and the crease line may score it. While not required, it prevents the tearing member from being inadvertently opened during transport and storage of the dispenser package. The outer channel has a great influence on the force of opening the package. In a preferred embodiment, when the stress concentrating pattern of the elongated channels recedes below the plane of the relatively rigid sheet surface and the dispenser package is biased in the wrong way, i.e. in the opposite direction of the normal opening direction, when folded. , Reinforcing the thin outer surface of a relatively rigid sheet to prevent accidental opening.

In another embodiment of the invention, at least 2
A double or multi-dispenser package consisting of two adjacent individually enclosed chambers is provided, each chamber having one side facing a relatively rigid and flat sheet, and at least one stress concentrating aperture forming projection member being enclosed. Disposed above the enclosed chamber and displaces at least a portion of the fold line or fold pattern away from the associated enclosed chamber from the plane of the relatively rigid and flat sheet. It is preferable that each stress concentration hole forming member is perpendicular to the fold line and extends in the length direction of the relatively rigid and flat sheet.

The multi-chamber configuration of the latter embodiment is isolated prior to use, but when the package is folded into a "V" shape, the channel-shaped stress concentrator members are ruptured, resulting in two separate openings formed thereby. Disclosed is a dispenser package that can dispense from a hole at essentially the same time. It is preferable that a plurality of the above-described stress concentration aperture forming members are arranged and aligned so as to face each other in parallel and close to each other. Such a dual or multi-chamber package may be configured such that when the channel-shaped stress concentrator is broken, the individually contained fluid substances are distributed as two adjacent streams in the direction of contacting each other.

As used herein, the term "crease line" or "crease pattern" is an alternative to a cut pattern as described above, a single straight line extending across a portion of all relatively stiff, flat sheets, or It includes a fold region formed by a weakening means other than a continuous line having a score.

Obviously, the object of the present invention is achieved by the present invention.

In a preferred embodiment of the invention, a plurality of parallel elongated thin-walled stress concentrating channel members are broken.
This allows a dispenser package composed of high strength, high quality barrier material to be opened, and when the channel-like member of such a pattern breaks, the opening formed thereby expands, resulting in The aperture forming structure can be more economically constructed by utilizing a thinner material than the conventional dispenser package having the outwardly projecting stress concentrating protrusion members shown in the patent.

In another embodiment, there is provided a simple means of using the fluid material contained in the universal packaging by the stress concentrating aperture forming means described above. Thus, the stress concentrating aperture forming structure described above is formed into a sheet of relatively stiff, thin wall material that is mounted and sealed over the openings provided in the walls of conventional containers of milk, juice, oil, etc. It The stress concentration opening forming structure of the present invention can be broken by not only the bending pressure but also the internal pressure. For example, when the milk container is squeezed, the stress concentrating means described above breach the fold lines and the milk contained therein can be used and upon further squeezing the opening remains open. When the pressure is released, no sealing is obtained, but the stress concentrating means reverts to their original closed position.

In another embodiment, the stress concentrating means of the dispenser package embodiment is used, but instead of being integrally formed with the outer wall or surface, it is a pouch or other dispenser package or It is placed inside the container. In this embodiment, small slits or openings are formed in the wall of the bag or package or container. A stress concentrating means is located on the inner surface of the wall over the slit or opening and is sealed around it to prevent fluid material from contacting the slit or opening. Squeezing or folding the dispenser package around the crease line allows fluid material to flow through the ruptured stress concentrating means and slits or openings from the container or package.

In another embodiment, the stress concentrating aperture forming means comprises a pattern of flat, elongated channel-shaped projecting members on which stresses across the fold line are concentrated, wherein the pattern of stress concentrating members is at least one deformable non-stress. A stress concentrating channel member with at least one apex secured to at least one side by a concentrating support channel member, the outer longitudinal edge of the channel member being connected to the laterally sloping wall member, the stress concentrating pattern forming it. Is joined to a substantially flat surface of the sheet member.

In the last-mentioned embodiment, bending the lengthwise ends of the sheet member away from the top end of the at least one stress concentrating channel member increases the narrow angle between the laterally sloping walls and increases the at least one The lateral non-stress concentrated deformation channel member is flattened and expanded in the lateral direction, the side walls of the channel member with the apex are approached, thereby sandwiching the apex angle, and reinforcing and supporting the channel member with the apex. The crease line can be broken by.

In the case of this embodiment, the stress-concentrated aperture forming member can be thermoformed with a plastic web stock that is much thinner (flexible) than before, and the manufacturing cost can be greatly reduced. The thin plastic web may be of a single material such as high density polyethylene or polypropylene, which may be a synthetic web composed of various barrier and sealant layers. A second advantage of this embodiment is that the length at which the crease lines are broken is limited to the width of the channel member, which is initially apexed, and it allows highly viscous, low-viscosity materials to be distributed as fine streams with high directionality. It means that you can.
However, if the fluid material to be dispensed contains particles or is of high viscosity, the application of a large bending force will result in a large internal pressure, causing the crease lines to break along their entire length, facilitating the wide range of materials or products. A flexible, enlarged aperture opening that can be dispensed is provided.

[0036]

Description of Embodiments Embodiments of the present invention will be described below.

Referring to FIGS. 1 and 2, the stress concentrating member of the container and dispenser package of the present invention is shown at 25.

The stress concentrating member 25 of the present invention comprises a substantially flat, relatively stiff sheet 12 having a stress concentrating pattern 26 on one side of the sheet 12. The sheet 12 is preferably formed of a plastic material suitable for the substance to be contained.

Materials such as high impact polystyrene (HIPS), high density polyethylene (HDPE), polyester, barex, polypropylene and the like can also be used. For surface materials having a high water vapor transmission rate, a sealant / barrier 14 is secured to the inner surface of the substantially flat, relatively rigid sheet 12 as shown in FIG.
And the sealant / barrier 14 may be integrated with each other. As is generally known, plastics of similar material can be heat-sealed or bonded together, but adhesives are required to bond different plastics together. It is preferred to use linear low density polyethylene (LLDPE) as the adhesive. Therefore, multiple layers of plastic formed by coextrusion may be sealed together to form the sheet 12 and sealant / barrier 14 of the present invention.

The stress concentrating member 25 may be secured to any container of fluid material and has one or more stress concentrating projection members 26A, 26B, 26C, 26D, 26 attached thereto.
It is preferable to provide the stress concentrating protrusion pattern 26 having E and to form it at right angles to the fold line 24. A preferred stress concentrator member 2 having a preferred pattern 26 in FIG. 1A.
5 and protruding members 26A-26E are shown. In the preferred embodiment, the protruding members 26A-26E are gutters,
It is formed in a groove or channel shape. Protrusion member 2
6A, 26E is longer than members 26B-26D, which acts as a guard or reinforcing projection member and is preferably on one side of a short tearing projection member. Inward projection member 2
The length of the guard members 26A, 26E for 6B-26D is determined by the number of inner members, their size, spacing and shape. Therefore, the ratio of the lengths of the guard projection member that does not break and the projection member that breaks changes, but the preferable range is 5 to 20, and the more preferable range is 5 to 10.
Is. A guard projection member may be placed between the short tear projection members to provide additional support or other characteristics to the stress concentration member 25.
May be given to.

As shown in FIG. 1A, it is preferred that the stress concentrating member 25 be scored across the stress concentrating protrusion pattern 26, thereby forming a fold line 24. The fold line 24 is a protruding member 26B to 2 which is torn inside.
It is preferable to cross only 6D. The fold line 24 of the present invention is not limited to the linear fold pattern,
Also included are various fold patterns or weakened areas. The crease lines 24 may traverse some tear members but not all of them, thereby creating an interrupted crease line. Further, due to factors such as the type of material used and the fluid material contained, the fold lines 24 have different orientations than the stress concentration projection patterns 26 shown in FIGS. 1A-1D.
You may make it cross the protrusion of. The fold lines 24 preferably do not traverse the long guard projections 26A, 26E to prevent inwardly breaking projections 26B-26D from being inadvertently opened during transport and storage. Furthermore, when the container is opened, the unbroken guard prongs greatly influence its force.

1B, 1C and 1D show another structure of the stress concentration pattern 26. In FIG. 1B, the crease line 24 of the relatively stiff and flat sheet 12 traverses the entire stress concentration pattern 26, which is a short tear projection member 26B,
26C, 26D as well as long protruding members 26A, 2
6E is included, and this acts as a breaking member. Figure 1C
Shows a crease line 24 extending beyond the stress concentration pattern 26 and to the side of the sheet 12 which is relatively stiff and flat. FIG. 1D shows a stress concentration pattern 26 having inward and outward protruding members of equal length. The shape and direction of the protruding member of the stress concentration pattern 26 of the stress concentration member 25 will be apparent to those skilled in the art. It is preferable that the protruding members 26A to 26E form a rib-like channel-shaped structure having an elongated thin wall.

The crease line 24 of the stress concentrating member 25 is shown in FIG. 4A.
A cross section around is shown. In the preferred embodiment, the stress concentrating projection members 26A-26E have a round bottom end 41 and a sharp top end 40 that prevent accidental tearing. However, as shown in FIG. 4B,
It may have a round bottom edge 41 and a top edge 40A, and as shown in FIG. 4C, it may have a sharp bottom edge 41A and a top edge 40, and a sharp bottom edge and It may have a rounded top (not shown) or a combination thereof.

As shown in FIG. 4D, the stress concentration pattern 26 may be recessed and retracted from the plane formed by the substantially flat and relatively stiff sheet 12. When the stress concentration pattern 26 is retracted, the stress concentration member 25
Not only can increase the rigidity of the packaging,
It is also possible to prevent an undesired downward pressure on the stress concentration pattern 26 during storage or transportation from accidentally opening the container in which the member 25 is used. As shown in FIG. 4D, the stress concentration pattern 2
6 is preferably retracted with a distance B of approximately 0.030 ″, and the protruding members 26A-26E are approximately 0.
Spaced apart by a distance D of 080 ″ and approximately 0.
It is preferred to have a depth C (from the surface formed by the substantially flat, relatively stiff sheet 12) of 080 ". The thickness of the substantially flat, relatively stiff sheet 12 is such that the outer surface also has stress concentrations. Even in the pattern 26, it is preferably 0.006 ", but the thickness is 0.004 to 0.01.
It may vary over a range of 2 ". The retracted projection members 26A-26E preferably have a rounded bottom end 41 and a sharp top end 40. As shown in Figure 4E, the guard projection members 26A, 26E. Are recessed deeper than the stress concentration pattern 26, thereby providing greater supportive characteristics and preventing inadvertent opening, and opening only when the container containing the hazardous fluid material is subjected to sufficiently high pressure. At other times, it may not be opened.Place the guard protrusion member between the breakable members,
It may also provide additional support properties.

The size and shape of the protruding member of the stress concentration pattern 26, that is, whether it is sharpened or rounded, may be changed depending on the pattern.

Referring to FIG. 5, a dispenser package using the stress concentrating member 25 of the present invention has a reference numeral 1.
It is indicated by 0.

As shown in FIGS. 5A-5C, the dispenser package 10 includes the substantially flat, relatively rigid sheet 12 described above, which is the inner surface 1 of the sheet 12.
The sheet 12 and the sealant / barrier 14 may be integrated with each other by having the sealant / barrier 14 fixed to the sheet 6. In addition, a flexible self-supporting sheet 14 is integrally attached to the outer periphery of the sheet 12 or the attached sheets 12 and 14, and the flexible self-supporting sheet 14 is adjacent to the inner surface 16 of the flat sheet 12 containing the fluid substance. 22 is formed.

In the preferred embodiment, a suitable sealant /
A layer of vapor impermeable barrier material 14 is integrally bonded to the flat sheet 12 of the inner surface 16 facing the flexible sheet 14. The flexible sheet 18 formed by an appropriate means such as vacuum forming, pressure forming, mechanical forming, or a combination thereof may be integrally fixed to the sheets 12 and 14.

A substantially flat and relatively rigid sheet 12, sealant / barrier material 14 by any suitable means known in the art such as welding, heat sealing, adhesive or adhesive.
The flexible side surface 18 may be fixed, and the bonding method may be selected depending on the characteristics of the material used and the fluid material to be contained.

In the preferred embodiment, the substantially flat, relatively stiff sheet 12 is preferably formed of high density polyethylene (HDPE), but when combined with the barrier 14, it is polystyrene, polyester, E
The barrier 14 may be formed of VOH (ethylene vinyl alcohol), or a copolymer thereof, and the barrier 14 is a saran-foil laminate, or a foil-vinyl laminate, or a suitable sealant / vapor-impermeable barrier material consisting of only foil. The material is determined by the nature of the substance formed and contained. When a barrier sheet 14 laminated to polystyrene or polyester forms a substantially flat, relatively stiff sheet 12, a tough, high barrier structure is saran laminated to polyethylene (commercially available under the name "Salanex" by Do Chemical Co.). Has been). The thickness of sheet 12, which is substantially flat and relatively stiff, will vary depending on factors such as the material used, the characteristics of the fluid material contained and the application. The preferable range is 4 to 12 mils (0.004 to 0.012 ″), and the more preferable range is 4 to 6 mils. The substantially flat and relatively rigid sheet 12 is relatively flexible and has a spring property. It is preferable that it is mochi and can be reinforced with a reinforcing material.

Depending on the nature of the fluid substance contained, the materials 12, 14, 18 can be fixed by any suitable means. The material and fixing system are the same as those described in '64
No. 0, '574,' 715 and '982 patent specifications.

The structure of FIGS. 5A-5C provides flexible sides 18 and substantially flat, relatively stiff sheets 12, 1
An enclosed pouch or chamber 22 between the four is formed in which fluid material is contained and fluid material is dispensed. As shown in FIGS. 5A and 5B, the enclosed pouch or chamber 22 consists of a pair of laterally spaced pockets 20, 21, which are connected by a shallow duct or channel 29. Which is described in the aforementioned Redmond '715 patent.

The conventional packaging system shown in the '640,' 574, '715 and' 982 patents has a surface formed by a substantially flat and relatively rigid sheet 12 and barrier 14. And a symmetrical or asymmetrical stress concentrating member extending above. As described above, the higher the protrusion is, the more easily the package is damaged during transportation and handling. One of the factors that determines the required height of the stress concentrating protrusion member is the sealant barrier layer 14.
The elasticity of the sheet 12 is substantially flat and relatively stiff. As shown in FIG. 7, reducing the height of the protrusions results in a dispenser opening 30 per channel of the protrusions.
Is smaller, reducing the chance of it breaking and damaging.
Therefore, the type of plastic, its thickness and physical properties limit the minimum height of the external protrusions.

As described in the '574 patent, increasing the number of external projection members can thereby increase the dispenser opening and increase its flow. Further, extending the stress concentrating projection means substantially to the full length of the package can increase its rigidity, thereby reducing the thickness of the top surface and reducing cost. Thus, the external protrusions of the package may be straight "V" shaped grooves, ridges or channels in close proximity to each other. Otherwise, the external projection members of conventional systems present some problems and drawbacks.

According to the present invention, the dispenser package 10 is replaced with the one projecting outward in the patent specification.
A recessed stress concentration pattern 26 is provided to provide one or more ribs or grooves extending inwardly from the outer surface of the relatively rigid and flat sheet 12. This modification of the stress concentrating protrusion member can overcome the problems and drawbacks of the conventional patent specifications. First, the outer surface of the sheet 12, which is substantially flat and relatively stiff, without any protruding apex extending from the enclosed pouch 22, remains flat. Therefore, it can be more effectively packaged, and the possibility of accidental breakage during transportation and storage can be reduced. Then, when printing the stress concentrating pattern 26 on the substantially flat, relatively stiff sheet 12, the print remains readable, unlike conventional outwardly projecting members. In addition, the "crash point" that prevents accidental opening greatly increases the rigidity of the package over conventional outboard packages. Finally, this shape allows the use of thin and soft materials, thus reducing the cost of the barrier 14 material as well as the substantially flat and relatively stiff sheet 12.

When the package 10 is folded into a "V" shape about the fold line 24, as described in the Redmond patent specification referenced above, the fold line 24
Acts as a guide through which the substantially flat and relatively rigid sheet 12 is broken. When the substantially flat and relatively stiff sheet 12 is folded into a "V" shape, the stresses are different from those of the outward protrusion stress concentrating structure of prior patent specifications such as the Redmond '574 patent. concentrate.

Unlike the prior Redmond patent specification, the pivot point 31 in this embodiment does not occur on or in the surface of the substantially flat, relatively rigid sheet 12 and is shown in FIGS. As shown at 31 in FIG. 6B, it descends below the rigid, flat side surface 12 toward the bottom end 41 of the stress concentrating projection member. Therefore, the pivot point 31 forms a fulcrum between the top end 32 of the round bottom end 41, which is the "crash" point, and the plane of the sheet 12, which is substantially flat and relatively rigid. As shown in FIGS. 7B-7E, upon application of forces A, A ′, the pivot point 31 pivots until it reaches the plane formed by the outer surface of the sheet 12, which is substantially flat and relatively rigid. . Dispenser package 1
Crash forces A and A'generated by the movement of 0 move the crash point 32 in the same direction as the turning point 31. By the combination of the crash point and the rotating point that moves,
When the package is folded to "V", the crash force at the crash point causes the crash point to move to the surface of the sheet 12, which is substantially flat and relatively stiff. As shown in FIG. 7C, this results in arcuate structures on either side of the broken stress concentrating member.

The stress concentrating means of the present invention acts as a single or double groove shape, but the number of grooves is three and four.
When it increases to 5, 5 or more, the present invention
It exhibits other unique properties. When the number of grooves in the stress concentration pattern 26 is large, the combination with the notch guard protrusion members 26A and 26E shown in FIG.
When the dispenser package 10 is folded into a “V” shape, as shown in FIGS. 7B and 7D,
The pattern 26 bulges outward, resulting in enlarged distribution apertures 30, which are egg-shaped, football-shaped or oval-shaped, as shown in FIG. 7E. The aperture 30 is larger than the aperture created by the conventional Redmond stress concentration means.

Another advantage over that of the prior art Redmond patent is that the stress concentrating means of the present invention do not produce a gush when first broken. In fact, the stress concentrating means of this invention were torn and opened, but it was found to be non-repellent and non-jetting. Therefore,
The anti-spout feature described in the Redmond '715 patent is not required. Since the anti-squirt feature tends to block the flow path, removing this feature at least below the stress concentrator means that the dispenser package 10 will allow blue cheese, salad dressing, a combination of mustard and seasoning, and a lumpy peanut butter. , "Lumpy" products such as salads and other lumpy flowing substances can be dispensed.

The structure and design of the package and the stress concentrating means that can reduce the cost has been investigated, and extending the length of the stress concentrating means 26 substantially to the length of the package can reinforce the thin film. I understood. Although a single long protrusion is effective in reinforcing the side surface of the protrusion, the distribution speed of the product is greatly limited. The larger the protrusion, the higher the distribution speed, but a thicker and more expensive film is required. As shown in FIG. 7, increasing the number of protrusions or members of the stress concentrating means increases the dispensing speed, especially when the members are in close proximity. For example, for six adjacent 1/8 "wide protrusions across the crease line 24, the width of the opening 30 is 3/4". The preferred "accordion" shaped structure along the aperture 30 is stretched, thereby forming a uniform large aperture, as shown in FIG. 7F, with a large lumpiness of up to 1/2 "diameter. Something can be passed.

The folds of the accordion can be easily stretched to give rise to the enlarged aperture 30 of FIG. 7F.

As shown in FIGS. 7E and 7F, the rigid side halves 10A, 10B cooperate with the flexible side 18 to squeeze and expand the containment material of the pouches 20, 21 when expanded. The openings in the holes 30 give rise to a highly directional flow of fluid material.

Another embodiment of the present invention forms two or more separated, enclosed, adjacent pouches or chambers by a flexible sheet 18, thereby forming a "dual" dispenser package. When open, the dual dispenser package can contain two or more separate and distinct substances that are isolated from each other before being used and mixed together. Dispenser containers with multiple chambers preferably have separate fold lines across each chamber. Another embodiment of the present invention provides chambers of different sizes, which can accommodate non-identical quantities of different substances separately and both can be dispensed precisely and essentially simultaneously.

Even if no special sealant or barrier material 14 is required, the structure of the relatively rigid flat sheet 12 of the previous embodiment is effective and such structure is within the scope of the present invention. As described above in connection with the use of local crease lines, such a structure distributes a low viscosity fluid material such as water, cream or alcohol as a highly directional flow from an essentially drip-free package. be able to. Such flowable material does not require a special sealant / barrier layer 14 and is a suitable material for dispensers having the other advantages of the present invention.

A stress concentration pattern 26 of a dispenser package 10 of a small quantity of fluid substance is shown, which is opened by folding the package and breaking along the crease line 24. However, the stress concentration pattern 26 can also be acted upon by internal pressure, for example by squeezing the container or package. In this embodiment, the stress concentration pattern 26 can be used in a versatile container of fluid materials such as orange juice and milk containers, toothpaste, motor oil or other fluid materials. The stress concentration pattern 26 preferably opens automatically when the container is squeezed and automatically restores when released, thereby covering the fluid material contained therein. As will be described below, when the container and the stress concentration pattern are formed of a microwave permissive material, the container can be subjected to microwave energy, thereby generating an internal pressure.

In another embodiment, the stress concentrating members 25 are formed similarly to the previously described embodiments, and are substantially flat and relatively stiff sheet 12, a series of opposed, closely spaced, substantially. Groove-shaped stress concentration projection members 26A to 26E
And a fold line 24 is provided. 8A and 8B
Preferably, the stress concentrating member 25 is mounted in or on the top or side of the container by heat sealing, adhesive or other fastening method, as shown in FIG.

FIG. 8A shows a stress concentrator 25 on the side of a container 70 such as milk or orange juice. The container 70 is squeezed, whereby the stress concentration member 25
And the stress concentration pattern 26 is acted on, and the internal pressure is acted on the stress concentration pattern 26, and the stress is substantially applied to the fold line 24
You can break along. Alternatively, the stress concentration pattern 26 can be broken along the fold line 24 by bending the stress concentration pattern 26 without generating internal pressure.

FIG. 8B shows a cylindrical container 71 having the stress concentration member 25 and the stress concentration pattern 26 at its top end. The sides of the container 71 are squeezed to break the sealed stress concentration pattern 26, which allows the containment material to be used. The stress concentration member 25 is preferably coated so that the stress concentration pattern 26 is not accidentally broken at an early stage. Struts 8 during transport and storage
It is preferable that the stress concentration pattern 26 is covered with zero. Before use, the strut 80 has a stress concentration pattern 2
Reinforce 6 to prevent accidental opening by accidental pressure on the container. Struts 80 are preferably tear-away struts that can be easily removed. FIG. 9A shows a peelable cover 8 mounted on the surface 70 A of the strut container 70 and the stress concentrating member 25.
9 shows an example of a strut 80 having a No. 1 and a strut member 82 attached to a cover 81, extending at a right angle and contacting the stress concentration pattern 26 in the stress concentration member 25 of FIG. 9B.

The strut members 82 exert a pressure on the stress concentration pattern 26 in the opposite direction of the pressure required for the openings of the pattern 26, so that the struts 82 exert a counteracting force on the pattern 26 so that the internal pressure in the container is at the pattern 26. Prevents breaking the protruding member. When the cover 81 is peeled off along the strut member 82, the canceling force is released, the stress concentration pattern 26 is not broken, and is not opened. When the cover 81 is removed, the container can be squeezed and the contained substance can be used. FIG. 9B shows a tear-away cover 81 on the surface 70A of the container. Strut member 82, stress concentration member 2
5 and stress concentration pattern 26 are also shown.

The protective cover on the stress concentration pattern 26 may be a cover 81 without struts 82, or other protective cover that will be readily appreciated by those skilled in the art.

In container 70, struts 80 may be used to ensure sealing of containers such as milk products. The struts 80 can be removed and the container can be used. Since the stress concentrating member 26 is not resealed, a sealing cover such as an adhesive is used to remove the stress concentrating member 2.
5 to provide a hygienic seal for products such as milk.

Another usage of the stress concentrating member 25 is shown in FIG. 8C.
~ Shown in Figure 8G. The dispenser package shown in FIGS. 8C-8G has a stress concentrating member 25 along the dispensing surface 83 of the dispenser 72, which is a flexible sheet of the material 18 shown in FIG. 8G.
It is formed by folding it into the shape of FIG. 8F, sealing, and sealing the edges along the edge 90 of FIG. 8F. As shown in FIG. 8C, dispenser 72
When squeezed, the stress concentration pattern 26 is broken and the contained material is released. Further squeezing removes the remaining contained material from dispenser 72.

Another embodiment of the invention is a new and improved shallow container or bag such as ketchup, mustard. As shown in FIG. 10A, the stress concentration member 25
Can be installed in the bag container 73. The bag 73 in this example is 0.001 "(50 calibers) thick Saran coated polyester, 0.000285".
It preferably includes a pouch made of an aluminum foil and an inner layer laminate of 0.0025 "LLDPE. A partial cross section of the inner layer LLDPE is shown in Figure 10. One side 73A of container 73 penetrates the laminate. There are slits or openings 84.

Since the inner layer of the pouch 73 is coated with LLDPE, the stress concentrating member 25 is also coated with the layer of LLDPE to a thickness of about 0.001 ″, and the outer peripheral edge 89 of the stress concentrating member 25 is provided between the two surfaces. Preferably, the stress concentrating member 25 is aligned within the pouch and the fold line 24 is located below the slit opening 84.

The stress concentrating member 25 is attached to the lower surface 73 of the pouch 73.
It is preferred to be rigidly attached to B below and around the slit 84 so that it does not come into contact with the slit opening 84 of the substance in the pouch. Similar to the embodiment of the dispenser package shown in FIG. 10A, when the pouch is filled with a fluid material and sealed, the fold line extends along the apex of the “V” to make the pouch a “V” shape. When folded, the internal stress concentration pattern 26 of the stress concentration member 25 is broken, and the fluid substance 88 flows from the pouch 73 as shown in FIG. 10B. It is preferred that the crease lines align with the slits in the wall of the pouch so that when squeezed there is an unobstructed flow path for the flow material extruded from the package. The orientation and location of the stress concentrating member 25 and the slit opening 84 of the pouch 73 or other types of containers using it are also within the scope of the present invention.

Another embodiment of the present invention is a stress concentrating member 2 of a dome-shaped dispenser package made of a substance such as butter.
5 is used. As shown in FIGS. 11A and 11B, the stress concentrating member 25 is attached to or formed on a substantially flat surface 85 of the container 74,
It contains a small amount of soft butter, margarine or similar material in a semi-rigid plastic dome 86. FIG.
A stripping tab 87 is shown in FIGS. 1A and 11B and can be pulled in any suitable manner to remove the package. However, the stress concentrator member 25 provides another method of using the butter contained in the user. The stress concentration member 25 is broken across the fold line 2 or the plastic dome 86 is squeezed to rupture the stress concentration protrusion pattern 26 across the fold line 24 and use the material contained thereby, as described above. can do.

Another embodiment of the invention, as shown in FIG. 12, is trimmed along one corner,
A container 69 for milk or the like having a surface 91 formed thereon. The container 69 is preferably made of blow molded plastic. It is also possible to place the stress concentrating member 25 on the surface 91 and pressurize it, first breaking the protruding pattern 26 and opening it. Similar to the container embodiment described above, squeezing the container 29 opens the projection pattern 26, and releasing the pressure restores the pattern 26. The stress concentrating member 25 is initially covered by a tab seal, which is removed when using the containment material. As described above, it is preferable that the user presses and breaks the pattern 26 before use.

Referring to FIGS. 13-15, another embodiment of a stress concentrating member for a container and dispenser package constructed in accordance with the present invention is shown at 100.

The stress concentrating member 100 comprises a substantially flat and relatively thin flexible sheet member 112 having a new and improved stress concentrating pattern 101 formed on one side thereof.
The seat 112 has a structure similar to that of the seat 12 described above, and is denoted by the same reference numerals as those shown in FIGS. 13 to 15. Therefore, the sheet 112 has the above-mentioned 1
May consist of one or more materials,
A crease line 124 similar to crease line 24 described above may intersect stress concentrating pattern 101 at its midpoint along its length, which may include the aforementioned sealant and / or barrier material 114 of material 14 adhered thereto. .

The fold line 124 is the stress concentration pattern 101.
Although it is preferred that it traverses all over, satisfactory results are obtained if the fold line 124 traverses only the central channel member 104 at the apex of the stress concentration 101. In this example,
It will be appreciated that the elongated deformable channel members 103, 103 'need not have rounded top ends.

The stress concentration pattern 101 is retracted so that the uppermost point of the central channel stress concentration means 104 with the apex is located in the plane of the outer surface of the cheek sheet 112. However, the stress concentration pattern 101 does not need to be recessed in order for the pattern 101 to operate properly.
Similar results are obtained with or without portions of the sheet extending beyond the plane of the outer surface of the sheet 112, and such other stress concentration patterns are shown in FIGS. 18A and 18B. If the stress concentration pattern has not receded,
8A, lateral walls 102, 102 '.
It will be appreciated that can be removed.

As shown in FIG. 14, at the time of manufacturing, that is, in the state of being pre-opened, the stress concentration pattern 101 has the sheet member 112 of the stress concentration member 100.
Of the central elongate channel member 104 with its top end extending upwardly to the level of the outer surface of the substantially flat sheet member 112, the side wall of which is lateral at its bottom end. Connected to the elongate deformable channel members 103, 103 ', which extend parallel to the central channel member 104 with the apex. The deforming channel members 103, 103 'have rounded tops. The deforming channel members 103, 103 'respectively have lateral walls 102, 10 which are slightly inclined upwards.
2 ', which is connected to the channel member 103,
The receding stress concentration pattern extending in the length direction of 103 ′ is connected to the substantially flat surface of the sheet member 112. FIG.
4 shows only a single layer sheet 112, but FIG.
It will be appreciated that coextruded or multilayer sheets 112, 114 may also be used, as shown in FIG.

Referring to FIG. 15, the shape of the stress concentration pattern 101 in the opened state when the fold line 124 is broken is shown by reference numeral 101A. Both ends 10 of the sheet 112
Bending 5, 105 'away from each other at the point of the apex 104 flattens the laterally upwardly sloping wall, as shown at 102A, 102A', and is shown at 103, 103A '. As shown, the deforming lateral channel members 103, 103 'are flattened and laterally enlarged.

As shown in FIG. 15, the flattened, enlarged lateral sloping walls and the deforming channel member bring the side walls of the central channel member 104A with the apex closer together, and the apex of the apex of the channel member 104A. The narrow angle is reduced to reinforce and support the central channel member with the apex. As a result, the fold lines 124 are first broken at the location of the reinforced sidewalls protruding above the channeled member 104 with the apex, and the lateral channel members are flattened when the stress concentrating member 110 is folded in the middle. Since it is stretched and expanded, its shape does not cause much stress and the fold line 124 does not break in its lateral extent.

As mentioned above, the stress concentrating members of FIGS. 13-15 have many advantages. First, when applied to the above-described embodiment of the stress concentrating aperture forming means, at least one deforming non-stress concentrating laterally connected to the stress concentrating channel member having at least one apex that intersects the fold line at a right angle. It has been found that the use of a channel member causes a thin flexible material to rupture across the channeled member at the apex when folded about a crease line, resulting in an aperture. The bending force is applied to both ends 105 and 1 in the length direction.
In addition to 05 ', it has been found that a transverse channel-shaped non-stress concentrating member that deforms when folded simultaneously around the fold line 124 as a unit significantly reinforces and improves the action of the stress concentrating channel member with the apex. It was

The channel members 103, 103 'which are deformed by the bending action described above are flattened and laterally enlarged, which is the side wall 20 of the channel member with the apex.
4, 204 'engaged and pressurized, 104 in FIG.
As shown at A, the walls 204, 20 'move toward each other, increasing the height of the apex and decreasing the narrow angle of the apex. This folding action reinforces and supports the channel member with the apex, increases its strength and rigidity, and increases the concentration of stress at the apex to break the fold line. This embodiment can greatly increase the magnitude of the stress concentrated on the member with the apex, and the entire aperture forming means can be manufactured with a plastic web stock which is much thinner than the conventional one, and thereby the aperture can be formed. It has been found that the cost of the forming means and the overall package or other unit in which the aperture forming means is incorporated can be significantly reduced.

Therefore, for example, the above-mentioned polypropylene and HDPE are plastic materials which are hard to break, but when a bending force is applied to both ends 105, 105 ',
Sheet of polypropylene or HDPE plastic 1
4.5-5.0 m with central channel member with apex of 12 or 60 mils (0.060 ") height
ils (0.0045-0.0050 ") thick polypropylene and HVOH or HDPE and EVOH plastic coextruders 112, 114 (approximately 1: 12-).
It was found that a thickness: height ratio of 1:13 broke the apical structure exactly. Other materials such as polyester plastics are more brittle than polypropylene and HDPE, with thinnesses on the order of 3-4 mils (0.003-0.004 ") and thickness: height ratios on the order of 1:15. Well that's enough.

Another advantage of this embodiment is that the central channel member 104A is initially apex in length at which the fold line breaks.
This means that low-viscosity, highly fluid substances such as mouthwash, milk, or alcoholic beverages can be distributed as a fine stream with high directionality. However, when a high-viscosity flowing substance is distributed, or in the case of a substance such as the above-mentioned "lumpy" substance, a large bending force is applied to both ends 105, 105 '.
In addition, additional internal pressure is created and the tearing action causes the crease line 124 to rupture along its entire lateral length, providing a relatively flexible and enlarged aperture opening for easy dispensing of such material. .

Another advantage of the embodiment shown in FIGS. 13-15 is that polypropylene can be breached and, unlike many plastics, polypropylene is not subject to deleterious effects when subjected to microwave energy. That is, the entire dispenser package can be placed in a microwave oven. Thus, in this example, the dispenser package can be used for food items such as soups, beverages such as hot chocolate, cheese and cheese spreads or liquid sauces. In addition, the aperture forming stress concentrating means and the flexible container member are made of a microwave-tolerant plastic material such as polypropylene or polyester, i.e. a material that is not subject to the harmful effects of microwave energy, or a combination of such microwave-tolerant plastic materials. When configured, it is possible to package a product that is solid or semi-solid at room temperature, but that is liquefied or flowable when heated, in this example.

Another advantage of the embodiment of FIGS. 13-15 is that the dispenser package constructed of a microwave-acceptable plastic material such as polypropylene or polyester is self-venting for many products contained therein. is there. Therefore, when the sealed package is placed in a microwave oven and heated, before opening the package, venting and heating with microwave,
The internal pressure created by the expansion of water vapor, air, and other gases must escape so that the internal pressure does not rise and the package does not actually burst and the contained material does not splash onto the oven walls. However, since the stress concentrating hole forming means is broken by the internal pressure, the pressure is increased only by the heating of the microwave until the internal pressure that breaks the stress concentrating means is generated, and then the opening of the stress concentrating means is broken. Vented through and the dispenser package does not burst in the microwave oven.

A laterally deformable channel member 103,
Reference numeral 103 'is a truncated hemispherical cross-section, which is preferably round, but as mentioned above, when the stress concentrating unit is folded around the fold line, the shape is flattened and expanded laterally. , The deforming channel member acts properly and is pressed against both side walls of the channel member having the apex. The shape is an upward convex shape, but is not limited thereto, and may be a polygonal shape, a truncated cone shape, or an inverted “V” shape.

Referring to FIGS. 16 and 17, FIG.
The dispenser package of the present invention using the stress concentration member 100 including the stress concentration pattern 101 shown in FIGS.

As shown in FIGS. 16 and 17, the dispenser package 110 has a substantially flat sheet member 112 formed of the relatively thin and relatively flexible material described above, and as described above. It may have a sealant and / or barrier layer 114. Similar to the dispenser package shown in FIGS. 5A-5C, a flexible sheet 118 is integrally affixed to the outer periphery of the sheet 112 or multilayer sheets 112, 114 to provide a substantially flat sheet 112 or sheet for containing a fluid material. At least one pouch or chamber 122 is formed proximate the inner surface of 112, 114. The enclosed pouch or chamber 122 includes a pair of laterally spaced pockets 12
0, 121, which may be connected by shallow ducts or channels (not shown) similar to duct 29 in FIG. 5B.

Referring to FIG. 17, both ends 105, 10
5'is bent towards each other in the direction of arrow AA, the fold line 124 is broken across the central channel portion 104A at the top of the stress concentration pattern 101A, and the dispenser package 110 is shown open. . When first breached at location 104A, the flexible chamber or pouch 122 containing the substance to be dispensed is only slightly compressed and collapsed. Thus, if the dispensed containment material is of relatively low viscosity,
Further pressurization of the ends 105, 105 'towards each other causes the contained material to be expelled as a narrow stream through the restricted opening formed by the top end 104. However, when a relatively high viscosity fluid material is dispensed, the resistance through the narrow opening 104A creates a large internal pressure when a large bending force is applied to the ends 105, 105 ',
The tearing action causes the crease line 14 to rupture along its entire lateral length, forming a relatively flexible, enlarged aperture opening that facilitates dispensing of such material.

Another advantage of the stress concentrating member 100 is that regardless of the thinness and flexibility of the plastic webstock W, the elongated multi-channel shaped structure of the stress concentrating pattern 101 provides it with sufficient rigidity.
The sheet member 112 retains a substantially flat shape and provides rigidity in the dispenser package 110 comparable to the flexible plastic material used to form the pouch or chamber 122, allowing both ends 105, 105 'to be operated in one hand with one hand. Grasping, pulling, folding sheet member 112 into a "V" shape about crease line 124 in the middle thereof, bringing ends 105, 105 'into close proximity to each other, rupturing pouch or chamber 122, flattening, and essentially containing material. That is, it can be completely released.

Referring to FIGS. 18 to 20, there are shown some other embodiments in which the stress concentration patterns 101 of FIGS. 13 to 17 are modified. For example, FIG. 18 shows a retracted stress concentration pattern 101 ′ having a central deforming channel member 103 secured by a pair of apical stress concentration channel members 104, 104 ′, and FIG.
8A is a sheet member 11 formed from the web stock W
Pattern 101 ′ of FIG. 18 completely protruding from the plane of FIG.
FIG. 18B shows the pattern 101 ′ of FIG. 18 partially retracting and partially projecting from the plane of the sheet member 112 formed from the web stock W, and FIG. A pair of adjacent side-mounted stress concentrating channel members 104, 104 'are shown with reference numeral 101 ", and FIG. 20 shows a pair of deformable channel members 103' with a pair of outermost sidewalls being fixed. The stress concentrating channel members 104, 104 'with apexes are shown at 101'".

The other patterns shown in FIGS. 18-20 behave similarly to those described in FIGS. 13-17, with the crease lines first crossing one or more apex channel members. It will be appreciated that the crease lines are torn and a sufficiently large internal pressure is produced that the fold lines are torn and opened over the entire lateral length. The channel members having the patterns shown in FIGS. 18 to 20 are also made of various materials and are used in FIGS.
It will also be appreciated that it can be formed into the shapes described in.

Referring to FIGS. 21 and 22, FIG.
A portion 310 illustrates a dual distribution package constructed in accordance with another embodiment of the stress concentrating member shown in FIGS. 15 and 18-20.

As is clear from FIGS. 16 and 17,
The stress concentrating member 300 has a pair of parallel stress concentrating patterns 301 arranged at a small distance on both sides of the narrow central land L left in the substantially flat sheet members 312 and 314 after forming the patterns 301 and 301 ′. Dual package 310 is package 11 except that it includes 301 '
It has the same configuration as 0. In this embodiment, two separately housed side-by-side pouches or chambers 322, 32
2'is provided which is a pair of pockets or bags 320A, 321A, 320B, 32 on either side of the fold line 324.
1B is preferably included, similar to 29 of FIG. 5B.
Each pair of pockets or bags is preferably connected by a narrow duct or channel (not shown).
As is clear from FIG. 22, (for convenience, the multilayer sheet 31
(Only two are shown), the inwardly extending walls of the pouches 322, 322 'are sealed at their upper ends to the central land L to provide two individually enclosed pouches or chambers 322, 322'. It is formed and communicates with the separated stress concentration patterns 301, 301 '.

As is apparent from FIG. 22, the stress concentration patterns 301, 301 'are preferably partially retracted and partially protruded from the sheet 312, which is a pair of closely spaced apex stress concentration channel members. 304,
304 ', and opposed sloped walls 306, 306' connecting the stress concentration pattern to the substantially flat central land L.
A lateral non-stress concentrating deformation channel member 303 secured to its innermost side wall by means of an upwardly sloping side wall 302, 302 'which couples the stress concentration pattern to the substantially flat peripheral surface of the sheet 312, It is attached to its outermost side wall by 303 '.

The dual chamber embodiment shown in FIGS. 21 and 22 is isolated from each other prior to use, but when the package is folded into a V-shape around the crease line, the stress concentration with the apex is obtained. Provided is a dispenser package in which a channel member is ruptured and dispensed from two separate openings formed thereby at essentially the same time and capable of containing at least two different flow substances, the folding action of which with one hand in one movement. Can be easily obtained.

The double package shown in FIGS. 21 and 22 may be formed with similar materials and stress concentration patterns, and the deforming stress concentration channel member may have a shape similar to that of FIGS. You may give it. Finally, it will be appreciated that the patterns 301, 301 'may be repeated to provide separate lands L and individually enclosed pouches or chambers 322, 322' to form a multi-dispenser package.

The present invention is not limited to the above embodiment.

[Brief description of drawings]

FIG. 1A is a plan view of a preferred stress concentrating member constructed in accordance with the present invention, showing a retracted stress concentrating pattern having several stress concentrating protrusions on the relatively rigid top surface of the stress concentrating member. , The stress concentrating member is perpendicular to the fold line, and shows fold lines that traverse only the outer protective stress concentrating member and the inner rupturing stress concentrating member, which are longer than the inner rupturing member, and B to D are other than the invention. B shows a fold line extending across the stress concentration pattern, C shows a fold line extending across the stress concentration pattern and across a relatively rigid side of the stress concentration member, and D shows 7 shows an inward breaking stress concentrating member and an outer protective stress concentrating member of the same length.

FIG. 2 is a perspective view of the stress concentrating member shown in FIG. 1A.

FIG. 3 is a perspective view of another stress concentration member having a barrier layer.

4A is a cross-sectional view of a stress concentrating member of an embodiment of the present invention around a fold line, showing a series of channels with pointed peaks and rounded valleys, and B is the stress of the cross-section of FIG. 4A. 4B is a perspective view of a concentrating member showing a series of channels with rounded apices and rounded valley bottoms, C is a perspective view of the stress concentrating member of the cross-section of FIG. 4A, a series of channels with sharp apices and sharp valleys And D is a perspective view of a stress concentrating member constructed in accordance with the present invention, showing a receding stress concentrating pattern with a series of rounded peaks and troughs, and E is a deeper receding protective member and pointed apex and rounded. FIG. 4D is a perspective view similar to FIG. 4D, but with a valley bottom.

5A is a perspective view of a dispenser package constructed in accordance with the present invention, showing the package in a pre-opened state, and B and C are front and side views of the dispenser package of FIG. 5A.

6A is a side view of a substantially flat relatively stiff sheet in a pre-opened state, and B is a cross-section of the substantially flat relatively stiff sheet of FIG. 6A having only one groove. Figure 6C is a similar view of the dispenser package of Figure 6A in use, where the package is first folded,
The state of being torn along the fold line is shown.

7A is a side view of the preferred embodiment dispenser package of the present invention in a pre-opened state, and FIG. 7B is a similar view showing the dispenser package of FIG. 7A in use, with the package first folded. 7B is a perspective view showing the broken state at the fold line, C is a perspective view showing the usage state of the dispenser package of FIG. 7B, and shows a broken state at the fold line, and D is the same as the usage state of the dispenser package of FIG. 7B. FIG. 7C is a view showing a state in which the package is further bent and is torn along the crease line, and E is FIG.
Figure 7B is a similar view of the dispenser package of Figure 7E, showing the package further folded and broken, showing the dispenser opening, F is a similar view of the dispenser package of Figure 7E, the package further folded. 1 shows a state in which a large dispenser opening through which a substance having a lumpy feeling can be passed is formed.

8A-8G are views of the stress concentrating member of the present invention used in various containers, where A shows a container for milk or orange juice, B shows a cylindrical container, and C-G. 7 illustrates another form of dispenser package.

9A and 9B are cross-sectional views and schematics of a cover and strut members for preventing accidental tearing of stress concentration patterns.

10A is a sectional view of a pouch container such as a ketchup having a stress concentrating member of the present invention, showing a slit opening above the fold line of the stress concentrating pattern, and B is a perspective view of the pouch of FIG. 10A. Yes, indicates the pouch containing material flowing from the pouch.

11A and 11B show a container such as soft butter using the stress concentrating means of the present invention.

FIG. 12 illustrates a container such as milk or orange juice with trimmed corners using the stress concentrating member of the present invention.

FIG. 13 is a perspective view of another embodiment of a stress concentrating member of the present invention showing a recessed stress concentrating pattern formed on a substantially flat sheet member formed of a relatively thin, relatively flexible material. .

14 is an enlarged cross-sectional view of the stress concentration pattern of FIG. 13, showing for convenience only a single layer of material, showing details of the shape of the pattern along the fold line in the pre-opened state of manufacture. , (I) shows a central channel member with an apex extending upward to approximately the same level as the outer substantially planar surface of the sheet member, the side wall of which at its bottom end, (ii)
Is connected to a short laterally deforming channel member having a rounded top end, the top end of which (iii) connects the receding stress concentration pattern to a substantially flat plane of the sheet member. Are linked to.

FIG. 15 is a partial cross-sectional view similar to FIG. 14, showing the shape of the stress concentration pattern of FIG. 14 in an open state with the fold lines broken, with lateral sidewalls flattened; , The deforming round channel members arranged on both sides of the channel member with the central apex are enlarged laterally,
Flattened and flattened and enlarged to allow the side walls of the central channel member with apex to approach, reduce the apex angle, reinforce and strengthen the central channel member with apex, break the crease line 11 shows the lateral sidewalls and deformed channel members.

16 is a perspective view of the dispenser package of the present invention in a pre-opened state, the dispenser package having the stress concentrating structure of FIGS. 13 and 14. FIG.

FIG. 17 is a perspective view of the dispenser package of FIG. 16 in an open state, with the ends of the package folded so as to approach each other in the direction of arrow AA, and the fold line being the central channel with the apex of the stress concentration pattern. FIG. 15 shows the state of tearing along the member, said pattern having the shape of FIG.

FIG. 18 is an enlarged partial view of a stress concentration pattern of the present invention in which the configuration of FIGS. 13 to 17 is modified, showing the stress concentration pattern in an opened state, and the channel member having the apex for concentrating the stress on both sides. Figure 4 shows a receding stress concentration pattern consisting of a fixed central deforming channel member, A and B are schematic representations of the stress concentration pattern,
Indicates a pattern protruding from the outer surface of the sheet member or web stock on which the pattern is formed, and B indicates a pattern partially retracting from the surface of the sheet member or web stock and partially protruding.

FIG. 19 shows a pair of adjacent apex channel members secured on one side by a deforming channel member.

FIG. 20 shows a pair of apical channel members secured by a pair of deformable channel members.

FIG. 21 is a perspective view of another example dual dispenser package, with a pair of small spaced parallels separated by a central narrow land formed in a substantially flat top sheet member. Showing a stress concentration pattern and a pair of individually enclosed parallel flexible pouches,
Each pouch communicates with one of the pair of stress concentration patterns.

22 is a pair of individually enclosed side-by-side pouches mounted and sealed to the narrow central lands of the sheet members forming the pair of parallel stress concentration patterns of FIG. 21 and the top surface of the dual dispenser package of FIG. 3 is an enlarged partial cross-sectional view showing details of FIG.

[Explanation of symbols]

 10 Dispenser Package 12 Relatively Solid Sheet 22 Pouch 24 Fold Line 25 Stress Concentrating Member 26 Stress Concentrating Protrusion Member 40 Top End 41 Bottom End

Claims (46)

[Claims] 1. At least one stress concentrating channel-shaped opening forming member laterally adjacent to at least one deformable non-stress concentrating channel member, each channel member being made of a relatively thin and relatively flexible material. A fold line transverse to said at least one stress concentrating channel member, said channel member having a transverse cross-sectional shape with a top end, whereby said channel member moves away from the top end of said channel member about said fold line. When folded into, the at least one deformable channel member is laterally deformed, engages and is pressed against the at least one stress concentrating channel member, thereby reinforcing and supporting the stress concentrating channel member, The stress concentration channel member breaks the crease line and opens. An opening forming means characterized in that holes are formed. 2. The at least one stress concentrating channel member has opposing sidewalls forming a toped surface of the transverse cross section, and the at least one deformable non-stress concentrating channel member has a transverse cross section. The opening forming means according to claim 1, wherein the opening forming means has a curved surface. 3. The aperture forming means according to claim 2, wherein the fold line intersects the at least one stress concentrating channel member and the at least one deforming non-stress concentrating channel member. 4. The aperture formation according to claim 3, further comprising a stress concentration channel member having a central apex fixed to the side wall by a pair of the deformable non-stress concentration channel members. means. 5. A sheet member made of a relatively thin and relatively flexible material, and a stress concentrating means formed in the sheet member made of at least two channel-shaped parallel members. Two parallel channel members, at least one stress concentrating member having opposite side walls forming a crested surface of the transverse cross section; and at least one deformation proximate at least one side wall of the crested channel member. And a fold line across the at least one apex channel member of the stress concentrating means, thereby causing the sheet member to extend from the apex of the at least one apex channel member about the fold line. The at least one deformable channel member deforms when folded away , Wherein at least one
At least one stress concentrating channel member with two apices
A stress concentrating aperture forming means characterized in that it engages and is pressed against two side walls such that the fold lines are broken across the at least one apex channel member. 6. The aperture forming means according to claim 5, wherein the sheet member is substantially flat. 7. The aperture forming means according to claim 5, wherein pressure is applied to the sheet member, and the sheet member is bent around the fold line. 8. A stress concentration at both ends of the sheet member on both sides of the fold line, the sheet member being folded around the fold line, the ends being towards each other with the at least one apex of the stress concentration. The opening forming means according to claim 5, wherein the opening is formed so as to be bent away from the top end of the channel member. 9. The aperture forming means according to claim 5, wherein the lateral cross-section of the stress concentrating channel member with at least one apex is "V" -shaped. 10. The aperture forming means according to claim 5, wherein the at least one deformable channel member has a curved surface in a lateral direction or a cross section. 11. The aperture forming means of claim 5, wherein the fold line intersects the at least one apex stress concentrating channel member and the at least one deformable channel member. 12. The sheet member includes an outer peripheral edge portion surrounding the stress concentrating means, the stress concentrating means retracting from a first surface of the sheet member, the stress concentrating channel member having at least one apex. The top end is at substantially the same level as the outer peripheral edge portion of the sheet member, and further includes a pair of lateral wall members parallel to the channel member extending between the stress concentration means and the outer peripheral edge portion of the sheet member. The opening forming means according to claim 5, wherein the opening forming means is formed. 13. The aperture forming means according to claim 5, wherein the sheet member is made of at least one plastic material. 14. A flexible sheet material mounted and sealed to a surface of a substantially flat sheet member facing away from the top end of the stress concentrating channel member with at least one apex, the flexible sheet material comprising: Forming at least one chamber member for containing a flowable substance such that when the sheet member is folded around the fold line, the at least one deformable channel member is flattened and laterally expanded; Engaged and pressed against the at least one sidewall of the at least one apical channel member such that the sidewalls of the at least one apical channel member are closer together, thereby reducing the narrow angle of the at least one apical channel member. Reduced, the side walls are reinforced and supported, and the crease lines are Rupture locally in the at least one apical stress concentrating channel member to cause the aperture opening and allow the flow material to be distributed as a directional flow from the at least one chamber member. The opening forming means according to claim 5. 15. The aperture forming means of claim 5, wherein the at least two parallel members comprise stress concentrating channel members having central apexes secured at opposite sides by deformable channel members. 16. The aperture forming means of claim 5, wherein the at least two parallel members comprise a central deforming channel member secured on both sides by a stress concentrating channel member having a top end. 17. The at least two parallel members comprise a pair of stress-concentrating channel members having apexes, one of which is fixed on one side by a deformable channel member. Aperture forming means. 18. The method of claim 5, wherein the at least two parallel members comprise a pair of apex stress concentrating channel members secured at the outermost sidewalls by a pair of deforming channel members. Aperture forming means. 19. The aperture forming means according to claim 10, wherein the transverse cross section of the at least one deformable channel member is truncated hemispherical. 20. The hole forming means according to claim 12, wherein the side wall member is inclined toward the outer peripheral edge portion of the sheet member. 21. The aperture forming means according to claim 12, wherein the lateral wall member is perpendicular to the outer peripheral edge portion of the sheet member. 22. The plastic material is polypropylene, high density polyethylene (HDPE), polyester,
The opening forming means according to claim 13, which is polystyrene, high-impact polystyrene (HIPS), Barex or a copolymer of the above-mentioned materials. 23. The sheet member comprises at least one plastic barrier material.
The opening forming means described in 3. 24. The aperture forming means of claim 14, wherein the fold line intersects the at least one apexed stress concentrating channel member and the at least one deformable channel member. 25. The sheet member has a peripheral edge portion surrounding the stress concentrating means, the stress concentrating means retracts from a first surface of the sheet member, and the stress concentrating channel member has at least one apex. Has a top end at substantially the same level as the outer peripheral edge portion of the sheet member, and further has a pair of lateral wall members parallel to the channel member extending between the stress concentrating means and the outer peripheral edge portion of the sheet member. The opening forming means according to claim 14, wherein the opening forming means includes. 26. The at least one chamber for containing the fluid substance includes a pair of pouch-shaped container members, the pair of pouch-shaped container members being disposed on both sides of the fold line, and further comprising the pair of pouch-shaped container members. A means for communicating the container member with the fold line, whereby when the fold line is broken, the fluid substance is distributed from the pair of pouch-shaped container members through the aperture opening. 15. The aperture forming means according to claim 14, wherein: 27. The substantially flat sheet member and the flexible chamber member are formed of a microwave permissive plastic material.
The hole forming means described in. 28. The aperture forming means of claim 23, wherein the at least one plastic barrier material is ethylene vinyl alcohol (EVOH) or saran. 29. The at least one chamber member contains a dense flow material such that when the sheet member is further folded after the fold line is first broken, the fold line spans substantially its entire lateral length. 25. A perforation forming means according to claim 24, characterized in that a perforated, opened and enlarged perforation opening is created to allow the dense flow material to be dispensed. 30. The fold line traverses the at least one apex stress concentrating channel member and the at least one deformable channel member, the at least one chamber member comprising a dense flow material, and the sheet member. 26. When folded, the fold line is torn and opened to provide an enlarged aperture opening over substantially its entire length.
The hole forming means described in. 31. The aperture forming means according to claim 27, wherein the microwave permissive plastic material is polypropylene. 32. The aperture forming means according to claim 27, wherein the microwave permissive plastic material is polyester. 33. A lid member formed from a relatively thin, relatively flexible sheet material, the lid member including at least two adjacent stress concentrating aperture forming means separated by an intermediate land of the sheet material. Each of the stress-concentrated aperture forming means includes at least one stress-concentrated channel member parallel to the intermediate land, and at least one deformable non-stress-concentrated channel member laterally adjacent to the stress-concentrated channel member. Wherein the lid member includes a fold line of a first surface that traverses the at least one stress concentration channel member of each of the stress concentration aperture forming means, and when the lid member is folded around the fold line, The crease line is opened, and is further attached to the second surface of the lid member opposite to the first surface and sealed. A flexible material formed container means having at least one individually enclosed pouch-shaped container member in communication with each of the stress concentrating aperture forming means, whereby both ends of the lid member are When folded around the fold line and the flexible pouch-shaped container member ruptures therebetween, the fold line across the at least one stress concentrating channel member of each of the stress concentrating aperture forming means ruptures, thereby at least A package characterized in that two adjacent apertures are created, each aperture communicating with one of the individually enclosed pouch-shaped container members. 34. The transverse cross-section of each channel member includes a top end, and when both ends of the lid member are folded around the fold line away from the top end of the channel member,
34. The package according to claim 33, wherein the fold line is broken. 35. The package according to claim 33, wherein the lid member and the pouch-shaped container member are formed of a microwave permissive plastic material. 36. Each of said stress concentrating channel members has opposing sidewalls forming a toped surface of the transverse cross section, and each deformable non-stress concentrating channel member includes a curved surface of the transverse cross section. The package according to claim 34, wherein: 37. The package of claim 35, wherein the microwave permissive plastic material is polypropylene. 38. The package of claim 35, wherein the microwave tolerant plastic material is polyester. 39. The package of claim 36, wherein the fold line intersects the stress concentrating channel members and the deforming non-stress concentrating channel members of the stress concentrating aperture forming means. 40. The lid member includes an outer peripheral edge portion surrounding each of the stress-concentrated aperture forming means, each of the stress-concentrated aperture forming means retracts from the first surface of the sheet member, and The top end of each stress concentration channel member is at substantially the same level as the outer peripheral edge portion of the sheet member, and further, between each edge of the intermediate land and the innermost side wall of each stress concentration channel member having the top end. A first pair of lateral wall members parallel to the channel member, the channel member extending between the outermost lateral edge of the deformed non-stress concentrating channel member and the outer peripheral edge of the sheet member. 40. The package of claim 39 including a second pair of parallel lateral wall members. 41. An outlet aperture in the wall of the container, a substantially flat sheet member formed of a relatively thin, relatively flexible material, and means for sealing the sheet member around the outer periphery of the container aperture. The container and the sheet member are formed of a microwave-allowable material, and the stress-concentrated aperture forming means of the sheet member is formed of at least one elongated thin-walled projection member having a channel shape. The member includes a substantially flat outer peripheral portion that encloses the stress-concentrating hole forming means sealed to the outer periphery of the container opening, and further has a fold line having a set length that intersects the channel-shaped stress-concentrating protrusion member. The channel-shaped stress concentration opening when pressure is generated in the container by microwave heating of the container and the microwave-allowable substance. Forming means torn is along said fold line, said apertures opening is formed, the material is characterized in that so as to be dispensing container. 42. A lid member formed from a relatively thin, relatively flexible sheet material, said lid member having at least one stress parallel thereto in lateral proximity to at least one deforming non-stress concentrating channel member. A stress concentrating aperture forming means comprising a concentrating channel member, the lid member including a fold line on a first surface across the at least one stress concentrating channel member, the lid member being folded around the fold line. When the fold line is broken, the container means is attached to the outer periphery of the lid member on the opposite side of the first surface and is sealed, and contains a microwave permissive substance. The container means includes the stress concentration opening. In communication with the forming means, the container means and the lid member are formed from a microwave permissible material, which allows the package to be a An internal pressure is generated when it is heated by a black wave, which causes the lid member to be bent around the fold line, whereby the fold line is broken and an opening is formed in the lid member. Wave acceptable package. 43. Means for automatically venting a microwave permissive package containing a microwave permissive material internally pressurized by microwave heating, the relatively thin and relatively flexible integral with said microwave permissive package. At least one elongated thin-walled stress concentrating member having a channel shape protruding from one surface of the sheet member, and the channel-shaped stress concentrating member. And a fold line of a set length across the fold line, whereby when the package is microwave heated, an internal pressure is created which folds the sheet member around the fold line and thereby the channel-like structure. Is deformed, the stress concentration member is broken at the crease line, A ventilation means, characterized in that the middle member forms a vent for releasing the internal pressure from the heated package. 44. The ventilation means according to claim 43, wherein the sheet member is made of polypropylene. 45. The ventilation means according to claim 43, wherein the sheet member is made of polyester. 46. The microwave permissive package has an exit aperture, and the sheet member is sealed to the package around an outer periphery of the exit aperture.
Ventilation means according to item 3.