JP2009539705A - Molded burst chamber with inward biting burst focus - Google Patents

Abstract

  When the molded rupture chamber (12S) is compressed, the product container (10) has a localized burst at the burst focus (12F). The base thin film (10B) and the facing cover thin film (10C) are selectively pressed together to become a double convex receiving part (see FIG. 1B). The product chamber (12P) and rupture chamber are contained within the peripheral seal (14P). An internal seal (141) extends across the container and isolates the product chamber from the rupture chamber. The chamber encroachment area (12Z) shifts the peripheral seal inward toward the rupture chamber. The burst focus (12F) initiates a burst at the innermost point or position of the encroachment area. The rupture side (14K) adjacent to the rupture focus forms a rupture edge. The rupture chamber is compressed by external pressure provided by the end user, as indicated by arrows (12C) and (12B) in FIG. 1B. Faced peel flaps, ie, cover peel flap (14C) and base peel flap (14B) (see FIG. 1C), are provided by separate faced membranes in the vicinity of the engulfment area after location rupture at the burst focus. Yes.

Description

  This application claims the benefit of provisional application serial number 60 / 790,482, filed April 10, 2006.

TECHNICAL FIELD The present invention relates to such a chamber with a molded burst chamber and a bite area that ensures burst to provide a peel flap.

BACKGROUND US Pat. No. 6,726,364 issued Apr. 27, 2004 to the present inventor discloses a rupture chamber with opposed peel flaps along the rupture edge. The rupture flap provides the product that has been pulled and stored by the end user to open the chamber. However, this conventional chamber does not have a burst-proof bite area.

SUMMARY Accordingly, it is an object of the present invention to provide a product container with a shaped rupture chamber that can be easily opened without the use of sharp instruments or other tools. The end user compresses the chamber causing the edge breach in the peripheral seal.

  Another object of the present invention is to provide such a container in which edge rupture is localized. The portion where edge rupture occurs is known to the container designer and user. This known bursting direction is an advantage in design and manufacture and later use. Rupture occurs at the burst focus and does not occur randomly along the peripheral seal.

  Another object of the present invention is to provide such a chamber device having opposed release tabs that allow the end user to open the rupture chamber for product access.

  Another section of the present invention is to provide such a container formed by one pressing step. The facing membranes are selectively pressed to form a container. All of the pressed thin film bonds are formed at the same temperature and under the same pressure and with the same duration.

  Another object of the present invention is to provide such a chamber device that generates an audible sound when an edge ruptures. The compression in the room gives rise to air escaping. The sound nature of the blast air is affected by the shape and size of the burst.

  Briefly, these and other objects of the present invention are achieved by providing a rupture chamber apparatus that produces a localized burst when in compression. The cover membrane facing the base membrane is selectively pressed together to form a peripheral seal and a shaped rupture chamber contained within the peripheral seal. A chamber encroachment area along the peripheral seal shifts the peripheral seal inward toward the rupture chamber. The burst focus forms part of the peripheral seal at the innermost position of the encroachment area. When the rupture chamber is compressed, a focus separation angle F is formed between the thin films facing at the rupture focus. A similar peripheral separation angle P is formed between the thin films facing along the peripheral seal. The focal separation angle F is larger than the peripheral separation angle P. The angular difference facilitates greater separation of the opposed membranes at the burst focus and then facilitates the opposed membrane separation along the peripheral seal. Shaped burst chamber localization bursts occur at the burst focus.

BRIEF DESCRIPTION OF THE DRAWINGS Further objects and advantages of the shaped burst chamber, manipulation of the burst focus, will become apparent from the following detailed description and drawings (not shown to scale).

  FIG. 1A is a plan view of a product container 10 showing a product chamber 12P and a shaped rupture chamber 12S with a bite area 12Z.

  FIG. 1B is a cross-sectional view of the container 10 of FIG. 1A during compression, generally along the reference line 1B, showing the focal separation angle F.

  FIG. 1C is a cross-sectional view of the container 10 of FIG. 1A, generally viewed along the reference line 1C, showing the peripheral separation angle P and the opposing rupture flaps 14C and 14B at the moment of rupture.

  FIG. 2 is a side view of the product container 20 with the same planar flat base 20B.

  FIG. 3 is a plan view of the product container 30 showing the curved bite area 32Z and the product filling port 34L.

  FIG. 4 is a plan view of a rupture chamber apparatus provided with a product 40P and a corner biting area 42Z.

  The first number of each reference number in the above figure represents the drawing in which the element or feature is most prominently shown. The second number represents the associated element or feature, and the last letter (if used) represents the component of that element or feature.

Reference numbers in the drawings The following table lists the reference numbers used in the drawings and shows the elements represented by the numbers.
Product container 10
Base thin film 10B
Cover thin film 10C
Product 10P
Arrow 12C
Arrow 12B
Burst focus 12F
Product chamber 12P
Molded burst chamber 12S
Encroaching area 12Z
Base peeling flap 14B
Cover peeling flap 14C
Rupture side 14K
Internal seal 14I
Perimeter seal 14P
Container 20
Coplanar flat base 20B
Cover thin film 20C
Drug 20M
Flat thin film plane 20F
Arrow 22C
Burst focus 22F
Molded burst chamber 22S
Perimeter seal 24P
Container 30
Product 30P
Product chamber 32P
Curved biting area 32Z
Product filling port 34L
Internal seal 34I
Perimeter seal 34P
Rupture chamber device 40
Product 40P
Molded bursting chamber 42S
Rupture chamber 42S
Corner corner biting area 42Z
Peripheral seal 44P
Normal embodiment (FIGS. 1A, B, C)
When the molded rupture chamber 12S is in compression, the product container 10 has a locating rupture at the rupture focal point 12F. The container is formed by a base film 10B and opposing cover films 10C, which are selectively pressed together to form two protruding receptacles (see FIG. 1B). A peripheral seal 14P around the container is also formed by selective pressing. Product chamber 12P and rupture chamber 12S are contained within the peripheral seal between the selectively pressed opposed membranes. An internal seal 14I formed by selective pressing extends across the container and isolates the product chamber from the molded rupture chamber. The chamber encroachment area 12Z along the peripheral seal shifts the peripheral seal inward toward the rupture chamber.

  The burst focus 12F forms part of the peripheral seal at the innermost point or position of the encroachment area. Rupture side 14K forms a portion of the peripheral seal adjacent to the burst focus. The rupture side extends from each side of the rupture focus. The bite area may be any suitable shape, such as a V-shaped notch (as shown in FIG. 1A) with a vertex at the bursting focus, with a straight bursting side extending from the vertex.

  The rupture chamber is compressed under the external pressure provided by the end user (indicated by arrows 12C and 12B in FIG. 1B) to separate the opposed membranes. Thin film separation starts at the burst focus and progresses outward, resulting in edge bursts along the burst side into the ambient air. Opposing peel flaps, ie, cover peel flap 14C and base peel flap 14B (see FIG. 1C), are provided by separated facing thin films in the vicinity of the encroachment area after a localized burst at the burst focus. The peel flap is easily grasped and pulled away by the end user, causing the internal seal to disengage. When the peripheral seal is breached in the encroachment area and the inner seal is dissociated, the end user has access to the product 10P in the product chamber 12P. The end user may be the actual consumer who consumes, uses or manipulates the product. The end user can involve the actual consumer facilitator or parent.

  The facing film can have multiple layers to provide properties such as waterproofness, UV protection, increased bulk, and strength. The facing layers can be any suitable surrounding material such as plastic, paper, fabric, cellophane or biodegradable material. Thin mylar plastic is a flexible film with sealing properties and can be used as a container material. The periphery of the container has a rupture seal along the rupture side for product access and a non-rupture seal along the remaining periphery. A rupture seal can be a fragile thin film bond, and a non-rupture seal can be a destructive thin film bond. A brittle burst seal can be formed at a lower film-to-film pressure and at a lower temperature for a shorter time than a destructive non-burst seal. Brittle seals are weaker than destructive seals, rupture at lower separation forces, and require less compression pressure provided by the end user.

  Additional details of suitable product containers are disclosed in US Pat. No. 6,726,364, issued Apr. 27, 2004 to Perell, the entire disclosure of which is hereby incorporated herein by reference. Shall be described.

Separation angle (Fig. 1B)
Thin film separation occurs along the inner edge of the rupture side seal as tension in the thin film pulls the thin film apart. Tension is due to internal compression in the rupture chamber caused by volume loss resulting from external pressure. The compressive force causes the thin film material to “expand” or to a maximum volume configuration. The opposing membranes leave everywhere no pressure is provided and expand the volume between the membranes. In the double convex embodiment of FIG. 1, the cover membrane 10C expands upward and the base membrane 10B expands downward, forming a steeper angle between the membranes at the burst focus 12F.

  Angle F is the focal separation angle between the tangents to the facing film at the bursting focal point 12F when the molded bursting chamber 12S is compressed (see FIG. 1B).

  The angle P is a peripheral separation angle between tangents to the facing thin film along the peripheral seal 14P when the rupture chamber 12S is compressed (see FIG. 1C).

  The angle F is larger than the angle P. This is because the inward encroachment area causes the flakes near the rupture focus 12F to occupy a steeper configuration. A steeper focal separation angle F facilitates greater separation of the opposed thin films at the burst focus and then facilitates the separation of the opposed thin films along the peripheral seal. The separation effect of the thin film tension is more effective at steeper angles. Larger angles and easier separations will result in a localized burst of the burst chamber at the burst focus. That is, an edge rupture occurs along the rupture side before a rupture can occur anywhere along the remainder of the peripheral seal.

Coplanar embodiment (FIG. 2)
The base membrane 20B is horizontal and rigid and defines a flat membrane plane 20F for the container 20. A flat container is convenient for many products such as the drug 20M. The flat base can be manufactured from a suitable, easy-to-process, inexpensive material such as cardboard.

  The angle F ′ is a focus separation angle between the tangent to the cover thin film 20C at the bursting focal point 22F and the thin film plane 20F when the molded bursting chamber 22S is compressed.

  The angle P ′ is a peripheral separation angle between the tangent to the cover thin film 20C along the peripheral seal 24P and the thin film plane 20F when the rupture chamber 22S is compressed.

  In the coplanar embodiment, the angle between the flat base film and the film plane is zero. The angle of the coplanar embodiment of FIG. 2 is about half of the corresponding angle of the double convex embodiment of FIG.

  The provided external pressure (indicated by arrow 22C) creates compression in the rupture chamber 22S, resulting in a separation force Jf at the separation focus 22F and a smaller separation force Jp along the peripheral seal 24P.

The force Jf ′, ie the separation force at the separation focus, is
Force Jf '= T (sine angle F')
Where T is the tangential tension in the facing film produced by burst chamber compression.

The force Jp ′, ie the separation force along the periphery, is
Force Jp '= T (sine angle P')
Where T is the tangential tension in the facing film produced by burst chamber compression.

  As the angle F ′ and the angle P ′ are increased (or decreased), the separating force increases (or decreases) according to a sine function. The separation force is maximum at the theoretical maximum separation angle of 90 °. The peripheral seal (or part of the peripheral seal) can be coplanar and defines a thin film plane.

Double angle (Fig. 1B, C)
The normal embodiment of FIG. 1 has a double convex receiver with the same tension and separation force as the flat base embodiment of FIG.

  The angle F, that is, the focus separation angle, is the sum of the cover separation angle Cf and the base separation angle Bf.

  The angle Cf is an angle between the cover thin film 10C at the bursting focal point 12F and the adjacent side L of the right triangle having the cover separation angle Cf.

  The angle Bf is an angle between the base thin film 10B at the bursting focal point 12F and the adjacent side L of the right triangle having the base separation angle Bf.

  The angle P, that is, the peripheral separation angle, is the sum of the cover separation angle Cp and the base separation angle Bp.

  The angle Cp is an angle between the cover thin film 10C along the peripheral seal 14P and the adjacent side L of the right triangle having the cover separation angle Cp.

  The angle Bp is an angle between the base thin film 10B along the peripheral seal 14P and the adjacent side L of the right triangle having the base separation angle Bp.

The separation force, the force Sf, at the bursting focus is
Force Sf = T (sine angle Cf + sine angle Bf)
Where T is the tangential tension in the facing film produced by burst chamber compression.

The separation force along the peripheral seal, the force Sp is
Force Sp = T (sine angle Cp + sine angle Bp)
Where T is the tangential tension in the facing film produced by burst chamber compression. The force Sf is greater than the force Sp.

  The burst focus has a threshold separation force Tsf. As the pressure provided increases, internal compression and film tension increase. As the rupture chamber "expands", the focal separation angle also increases, resulting in an increased sine function. Eventually, the separation force Sf at the bursting focal point 12F exceeds the threshold separation force Tsf, and the pressed thin film bond is impaired. The peripheral seal has a similar threshold separation force Tsp. The threshold separation force Tsf at the bursting focus is smaller than the threshold separation force Tsp of the peripheral seal. In the range of rupture chamber compression that forms the threshold separation force range, the burst focus is separated, the peripheral seal is not separated, and the threshold separation force range is greater than the threshold separation force Tsf of the burst focus, It is smaller than the threshold separation force Tsp of the peripheral seal. Within this critical range of thresholds, separation at the bevel seal proceeds and the peripheral seal remains intact.

Product port embodiment (Figure 3)
The container 30 has a product filling port 34L in which the peripheral seal 34P has not yet been pressed. When product chamber 32P is filled, the port receives product 30P. During the initial pressing of the peripheral seal 34P and the inner seal 34I, the fill port remains unsealed. After the product is filled, the filling port is sealed during final pressing. The biting area 32Z can be recessed inward at the burst focus, with the curved burst side extending from the burst focus. The encroachment area and the container are symmetric about the rupture focus, with symmetrical rupture sides extending from the rupture focus. The normal embodiment of FIG. 1A is symmetric about the reference line IB, and the port embodiment of FIG. 3 is symmetric about the reference line R. Alternatively, the container may not be symmetrical (as shown in FIG. 4). The bursting focus is the location that forms the origin of the bursting side extending from the bursting focus, as shown in FIG. 1A. Alternatively, the burst focus can occupy a width along the peripheral seal between the burst sides extending from the burst focus, as shown in FIG. The composition of the burst focus and the strength of the burst side affect the nature of the sound produced by the burst chamber. The plosive sound can be loud, soft, high or low, or long or short, as required by the application.

Product room embodiment (Fig. 4)
In a typical embodiment, the product was in the product chamber (see FIG. 1). In the chamber embodiment of FIG. 4, the product is in a rupture chamber. Product chambers and internal seals are eliminated. The molded rupture chamber 42S has a peripheral seal 44P formed by selective pressing. The chamber encroachment area 42 </ b> Z, the bursting focal point 42 </ b> F, and the bursting side portion 44 </ b> K are disposed at the corners of the container 40. The rupture seal at the burst focus and along the rupture side may be narrower than the wider peripheral seal. Narrow burst seals require a smaller chamber enlargement to force an edge burst and burst before the peripheral seal can be breached. In addition, the burst seal separates faster than the peripheral seal due to the steeper focus separation angle provided by the shaped burst chamber. To further improve rupture, the rupture side at the rupture focus may be weaker than the rest of the peripheral seal due to manufacturing time and temperature and pressure limitations.

Industrial Applications The object of the present invention is achieved by providing a product container with a shaped rupture chamber that can be easily opened without the use of tools, as described above. Will be apparent to those skilled in the art. Furthermore, edge rupture is location specific, occurs at the burst focus, and does not occur randomly along the peripheral seal. The ruptured chamber has an opposing release tab that helps the end user open the molded chamber. The container is formed by a single pressing step, in which the facing membranes are selectively pressed together. All pressed thin film bonds are formed at the same temperature, pressure and duration. The chamber device produces an air squirt when the edge bursts, and this squirt generates an audible sound.

  Various changes may be made in the structures and embodiments shown herein without departing from the inventive concept. Further, the features of the embodiments shown in the various figures can be used in combination with the embodiments shown in the other figures. Accordingly, the scope of the invention should be determined by the following claims and their equivalents.

FIG. 1A is a plan view of a product container 10 showing a product chamber 12P and a shaped rupture chamber 12S with a bite area 12Z. 1B is a cross-sectional view of the container 10 of FIG. 1A as viewed generally along the reference line 1B during compression showing the focal separation angle F. FIG. 1B is a cross-sectional view of the container 10 of FIG. 1A, viewed generally along the reference line 1C, showing a peripheral separation angle P and opposed rupture flaps 14C and 14B at the moment of rupture. It is a side view of the product container 20 provided with the same plane flat base part 20B. It is a top view of the product container 30 which shows the curved bite area 32Z and the product filling port 34L. It is a top view of the rupture chamber apparatus provided with the product 40P and the corner corner biting area 42Z.

Explanation of symbols

  Product container 10, base thin film 10B, cover thin film 10C, product 10P, arrow 12C, arrow 12B, burst focus 12F, product chamber 12P, molded burst chamber 12S, biting area 12Z, base peel flap 14B, cover peel flap 14C, Rupture side 14K, internal seal 14I, peripheral seal 14P, container 20, coplanar flat base 20B, cover thin film 20C, drug 20M, flat thin film flat 20F, arrow 22C, burst focal point 22F, molded burst chamber 22S, peripheral Seal 24P, Container 30, Product 30P, Product chamber 32P, Curved biting area 32Z, Product filling port 34L, Internal seal 34I, Perimeter seal 34P, Burst chamber device 40, Product 40P, Molded Rupture chamber 42S, rupture chamber 42S, corner corner encroachment area 42Z, peripheral seal 44P

Claims (20)

In a rupture chamber device that produces a localized burst when in a compressed state,
A selectively pressed base film and a facing cover film are provided,
A peripheral seal formed by selective pressing is provided,
Between the selectively pressed opposing membranes, there is a molded rupture chamber contained within the peripheral seal,
A chamber encroaching area is provided along the peripheral seal, the peripheral seal being shifted inward toward the rupture chamber,
A bursting focus is provided that forms part of the peripheral seal in the innermost part of the encroachment area,
A focal separation angle F between the opposing membranes at the bursting focus when the bursting chamber is compressed is provided;
A peripheral separation angle P between the facing membranes along the peripheral seal when the rupture chamber is compressed is provided;
The focal separation angle F is greater than the peripheral separation angle P, facilitating greater separation of the opposed thin films at the bursting focus than the opposed thin film separations along the peripheral seal;
A rupture chamber device for generating a locating burst when in a compression state, characterized in that the rupture of a rupture chamber formed at a rupture focus is generated.   The apparatus of claim 1, further comprising an opposed peel flap provided by a separate opposed film in the vicinity of the encroachment area after a localized rupture at the rupture focus.   3. An apparatus according to claim 2, wherein a product in a molded bursting chamber is provided.   The apparatus of claim 1, wherein a rupture side is provided that forms part of a peripheral seal adjacent the rupture focus and extends from each side of the rupture focus.   The apparatus of claim 4, wherein the rupture side separates at a faster rate than the peripheral seal when the rupture chamber is compressed.   The apparatus of claim 4, wherein the peripheral seal along the rupture side is weaker than other portions of the peripheral seal.   The apparatus of claim 4, wherein the peripheral seal along the rupture side is narrower than other portions of the peripheral seal.   5. The apparatus of claim 4, wherein the biting area is a V-shaped notch and has a vertex at the bursting focus and a straight bursting side extending from the vertex.   The apparatus of claim 4, wherein the rupture side extending from the rupture focus is curved.   5. The apparatus of claim 4, wherein the encroachment area is symmetric about the burst focus and the symmetrical burst side extends from the burst focus.   The apparatus of claim 4, wherein the rupture focus is a point that forms a rupture side origin extending from the rupture focus.   The apparatus of claim 4, wherein the burst focus has a width along the peripheral seal between the burst sides extending from the burst focus.   The apparatus of claim 1, wherein at least a portion of the peripheral seal is coplanar to form a thin film plane. The base film is flat and rigid, defining the film plane,
The focal separation angle F ′ is the angle between the cover membrane and the membrane plane at the bursting focus;
The separation force Jf ′ is
Jf '= T (sign C)
14. The apparatus of claim 13, wherein T is a tangential tension in the facing membrane caused by burst chamber compression. The focus separation angle F is the sum of the cover separation angle Cf and the base separation angle Bf,
The cover separation angle Cf is the angle between the cover film at the bursting focus and the adjacent side of the right triangle containing the cover separation angle Cf;
The base separation angle Bf is the angle between the base thin film at the bursting focus and the adjacent sides of the right triangle containing the base separation angle Bf;
Peripheral literary science and district P is the sum of cover separation angle Cp and base separation angle Bp,
The cover separation angle Cp is the angle between the cover membrane along the peripheral seal and the adjacent side of the right triangle containing the cover separation angle Cp;
The base separation angle Bp is the angle between the base thin film along the peripheral seal and the adjacent sides of the right triangle containing the base separation angle Bp;
The force of the separation force Sf at the bursting focus is
Sf = T (sign Cf + sign Bf)
In this case, T is the tangential tension in the multi-thin film in the direction produced by burst chamber compression,
The force Sp of the separating force along the peripheral seal is
Sp = T (sign Cp + sign Bp)
Where T is the tangential tension in the facing flakes caused by burst chamber compression;
The apparatus of claim 1, wherein the force Sf is greater than the force Sp. The bursting force has a threshold separation force Tsf;
The peripheral seal has a threshold separation force Tpf;
The apparatus of claim 1, wherein the burst separation threshold separation force Tsf is less than the peripheral seal threshold separation force Tpf.   In the range of burst chamber compression that produces a threshold separation force range that is greater than the burst separation threshold separation force Tsf but less than the peripheral seal threshold separation force Tpf, the bursting focus is separated and the peripheral seal is not separated. The apparatus of claim 16. There is a product chamber contained within the peripheral seal between the selectively pressed opposing membranes,
There is an internal seal formed by selective pressing to isolate the product chamber from the rupture chamber,
Forming a part of the peripheral seal adjacent to the burst focus, provided with a burst side extending from each side of the burst focus;
There is an opposing peel flap provided by a separate facing thin film near the encroachment area after a location rupture at the burst focus, the peel flap providing disengagement of the internal seal and access to the product chamber The apparatus of claim 1, wherein:   19. A container according to claim 18, wherein a product filling port is provided through the peripheral seal for containing the product in the product chamber.   19. A container according to claim 18, wherein a product in the product chamber is provided.

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