JPH0866329A - Pouch - Google Patents

Abstract

PURPOSE: To prevent dripping by a simple structure and to seal a tube with a pouch directly by connecting a pump tube with a pouch main body directly without necessity of an adapter, making an outer layer of the pouch by polyolefin and making the pump tube by compatible polyolefin. CONSTITUTION: A pouch 20 consists of a plastic body 26. The body 26 is preferably made by polyolefin. A pump tube 28 is sealed with the body directly and the pouch is loaded within a dispenser mechanism. The device compresses the pump tube 28 to discharge an increased mount of liquid into a nozzle. A tube 34 is preferably made by a polypropylene/butyl terpolymer composition. The composition is preferably made by 20-45 wt. parts of thermoplastic polypropylene, 55-80 wt. parts of butyl terpolymer, 50-60 wt. parts of oil and 2-20 wt. parts of a reinforcing filler.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for accommodating a liquid product as a whole and including a pump tube for dispensing an incremental amount of the liquid product from the apparatus. Particularly, the present invention is a pouch in which a pump tube extends from a lower portion thereof, the pouch and the pump tube are mounted in a mechanical dispenser, and the dispenser selectively squeezes the pump tube to store the liquid contained in the pouch. The present invention relates to a device for dispensing a predetermined increment amount of.

[0002]

2. Description of the Related Art The present invention particularly relates to a soap liquid to be installed in an automatic dispenser mechanism adapted to dispense a predetermined amount of soap liquid from a nozzle formed at the lower end of a pump tube by operating a push bar or the like. It is for storing. The mechanism for holding the pouch and tube is disclosed in US application 07 / 826,065 (filed January 27, 1992), which is incorporated herein by reference.

With an elongated cylindrical portion extending therefrom,
A series of conventional devices are known for containing the liquid to be squeezed by the dispenser mechanism. Such a device is disclosed in US Pat. Nos. 4,349,133, 4,463,876, 4,546,904, 4,667,
854 and 4,932,562.

In a typical construction, the pump tube comprises a pouch adapted to extend therefrom. A check valve is usually located at the lower end of the pump tube. The check valve is composed of four parts: an upper cap having a valve orifice, a lower cap having a through hole, a ball that can be mounted on the orifice, and a spring that biases the ball with respect to the orifice.

When the pump tube pressure overcomes the spring pressure, fluid passes through the orifice and exits the bore.

[0006]

The check valve is designed so that fluid does not leak or drip from the pump tube. The known check valve structures are not entirely satisfactory due to the complex structure and time-consuming fabrication. Furthermore, the same structure combined with a known pump tube cannot necessarily prevent drip.

Another problem with known pouch tube combinations is the inability to seal the tube directly to the pouch. Instead, it is necessary to use a coupler to seal the tube to the pouch.

Accordingly, there is a need for improved pump tube / pouch structures.

[0009]

SUMMARY OF THE INVENTION The present invention provides an improved pouch / pump tube structure for containing liquid products. For this purpose, the pump tube can be glued directly to the pouch body without the need for an adapter. Also, for this purpose, at least the outer layer of the pouch is made of polyolefin and the pump tube is made of compatible polyolefin.

Further in accordance with the present invention, a novel construction of the pump tube is provided. The pump tube is equipped with an integral "Duck Bill" check valve. Due to the structure and material of the pump tube, the tube acquires the characteristics of a latex tube. This allows the tube to be used with a "duck bill" valve and provides improved properties with respect to avoiding drip compared to conventional devices.

Further, in one example, an improved socket connection component for a nozzle composition is provided. The socket connection piece and the nozzle composition provide an interlocking means for retaining the nozzle composition on the check valve. The nozzle composition provides a closed end with a brittle joint and finger tab portions. The nozzle can be opened by grasping the finger tab portion for use and breaking the nozzle at the brittle joint.

[0012]

An advantage of the present invention is that it provides an improved pouch and pump tube construction.

A further advantage of the present invention is that it provides an improved soap dispenser.

A further advantage of the present invention is that it provides an improved pump for dispensing fluids.

A further advantage of the present invention is that it provides a tube / pouch structure that allows the tube to be secured directly to the pouch.

Further, an advantage of the present invention is that it provides a pump tube that does not require a four-piece check valve structure.

[0017]

The present invention provides an improved pouch and pouch tube for dispensing fluids. Referring now to the drawings, FIG. 1 shows a liquid storage pouch 20. The pouch is composed of a plastic body 26. The body 26 can be constructed of any plastic film,
It is desirable to use polyolefin. In the preferred embodiment, the body is constructed of a three-layer film having an outer layer and an inner layer of polyolefin, polypropylene, or mixtures thereof, and an intermediate layer of a support structure such as polyamide. FIG. 2 shows the pouch filled with an expanded condition.

According to the present invention, the pump tube 28 seals directly to the body 26. Co-pending application US07 / 82
Pouch 20 loads into the dispenser mechanism as described in 6,065 (January 27, 1992). The device squeezes the pump tube 28 to dispense an incremental amount of liquid into the nozzle 30.

FIG. 3 shows the pump tube 28 in detail. The pump tube 28 is a long tube 34.
, But the tube 34 is in accordance with the invention a US patent.
It is desirable to make it with a polypropylene / butyl rubber composition as disclosed in 4,916,180. The disclosure of the above US patents is incorporated herein by reference. In one example, the above composition was treated with a peroxide curative. The pump tube contains 20 to 45 parts by weight of thermoplastic polypropylene, 80 to 55 parts by weight of butyl terpolymer, and 5 to 6 parts of oil.
Desirably, it is composed of 0 parts by weight and 2 to 20 parts by weight of the reinforcing filler. It was found that by using this material, the tube can be directly sealed to the body without any fitting parts or coupler.

As shown in FIGS. 3 and 4, the body 26 is extended to provide a short film nozzle portion 36 which fits over the upper end inside the tube 34 and is sealed against the inside of the tube 34. By using a compatible polyolefin material, the body and tube can be sealed together using thermoforming techniques.

The tube 34 provides a flange around its upper end to fit snugly around the nozzle portion 36 against the body 26. The tube 34 is the flange 4 described above.
A check valve composition 44 is provided at the end opposite to 0. The composition 44 is aligned with the first hole through the small diameter portion 46 through which the central hole 48 penetrates, the neck region 49 having the tapered hole 50, and the tapered hole 50 in the neck region 49, and the same hole. A large diameter portion 51 through which a second hole 52 communicating with the. The first hole 48, the tapered hole 50, and the second hole 52 form a Venturi-shaped passage.

The elastic ring 6 surrounds the intersection between the small diameter portion 46 and the large diameter portion 51 and is arranged outside the tapered hole 50.
At 0, the ring 60 squeezes and closes the tapered hole 50 when there is no pressure in the pump tube 28. When hydraulic pressure is applied to the inside of the pump tube, the taper hole 50 becomes the ring 6
Against the elasticity of 0, it is pryed open and pulls open the ring 60, allowing the liquid to flow through the first hole 48, the tapered hole 50 and the second hole.
So that it can pass through the hole 52.

The large diameter portion 51 extends into the socket portion 64.

The nozzle composition 30 fits tightly within the socket portion 64. The nozzle composition 30 comprises a fitting flange 68 that will abut the outer surface 69 of the socket portion 64 when the nozzle composition 30 is fully inserted into the socket portion 64. The nozzle composition 30 has a center through hole 70 for carrying the liquid dispensed from the second hole 52 to the nozzle hole 72.

FIG. 5 shows another example of the pump tube 100. In this example, the pump tube 100 has a flange at its upper end and a dispensing cylinder 11 at its lower end.
A tube 104 with a small diameter portion 108 that tapers inwardly. At the opposite end, a duck bill check valve 112, which is shown in more detail in FIGS. 6 and 7, is arranged. Surrounding the cylinder portion 110 is a receiving socket 114, which is also shown in detail in FIGS.
And an annular female socket 116 defined therebetween. Nozzle composition 118 with male engagement plug 122 and stop flange 124 is inserted into annular female socket 116 until stop flange 124 abuts facing flange 126 of receiving socket 114. 8 and 9
The nozzle portion 118 will be described in detail.

6 and 7, the pump tube 100 is depicted in more detail. An annular groove 1 having an equilateral triangular contour inside the receiving socket 114
30, 132 are provided. Annular groove 130, 132
8 are annular rings 134, 138 having an equilateral triangular cross section formed on the nozzle composition 118 as shown in detail in FIG.
To receive. Grooves 130 and 132 and rings 134 and 136
In this combination, the nozzle composition 118 is received and stored in the socket 114.

As shown, the duckbill check valve 112 has a taper 139a, 139b at its front end in the plane of FIG.
Is provided. The slit 140 drawn in a closed shape is provided in the lower wall 141 of the cylinder portion 110. When the pressure in the cylinder portion 110 rises to a sufficient extent due to the pump tubing, the slit 140 widens open and the liquid increment passes through it. Therefore, when the mechanism that squeezes the pump tube contracts, suction force is created in the tube, and any liquid material still remaining in the nozzle is slit 1
Reverse suction is performed before 40 is closed. Thereafter, the suction prevents the drip in the nozzle hole 172 shown in FIG.

In the embodiment shown in FIG. 7, the slit 140 extends only across the partial width of the check valve 112. The check valve is not tapered in the plane of FIG. An axial groove 142 is provided in the tube 104. The groove 142 includes a tubular portion 142, a funnel portion 142b, and a slightly tapered groove portion 142c. The tapered groove portion 142c terminates in the lower wall 141.

8 and 9 show a nozzle composition 118 having a male engagement plug 122 around which annular rings 134 and 136 and a stop flange 124 are constructed. The stop flange 124 is a C-shaped ring that surrounds the body portion 143 that is axially continuous with the male engagement plug 122. The stop flange comprises a notch 145 that can be used to direct the tube into the dispenser mechanism. Body portion 143 extends into a small diameter tube portion 156 which terminates in finger tab portion 158. Nozzle composition 1
18 comprises a first central groove 160 which opens into a second small diameter conical groove 162 which opens into a third tapered groove 164. Third
The groove 164 terminates in the closed end wall 166 to prevent fluid from flowing into the nozzle composition 118.

A small diameter portion or annular notch 170 is formed near the outside of the tubular portion 156. The tubular portion 1 in the notch 170 that grips the finger portion 158
The destruction of 56 opens the third groove 164 to form a nozzle hole 172 used to dispense liquid. Thus, to preserve a leak-free, liquid-filled pouch, the present invention provides a seal nozzle portion that is easy to open for actuating the device.

FIG. 10 shows another example of the pump tube 184 of the present invention. In this example, the upper flange 186 has a rectangular tab 188 extending on one side in the radial direction of the flange 186.
I will provide a. This tab is effective in orienting the pump tube 184 within the dispenser device. A deformed socket 190 is used at the opposite end of the pump tube 184, which socket 190 extends further longitudinally than the previously described socket 114. The deformed socket 190 extends to a surface 200 that is substantially equal to the extension of the check valve 112. A substantially circular flange 194 is constructed on this surface 200. A notch 196 similar in shape to the notch shown in FIG. 9 is provided in the flange 194. Notch 196 is rectangular and can be used to orient pump tube 184 within the dispenser mechanism. Cell valve 112
The female socket 197 is formed between the socket 190 and the socket 190.

FIG. 11 shows another example of the nozzle composition 204. The composition is such that a cylindrical housing 206 having an axial groove 208 formed therein fits into a female socket 197 as shown in FIG. As mentioned above, the notches 130, 132 are provided with ribs 134, 1
36 to retain the nozzle composition 204 in the socket 190. The channel 208 tapers within the small diameter region 210 into a straight groove 214.

Cylinder portion 218 connects to body 206. A groove 214 extends axially through the cylinder portion 218. The flange 220 surrounds the cylinder portion 218 at a fixed location along its length. On the side of the flange 220 opposite the cylinder portion 218, there is a notch region 226, which is broken as described above for the notch 170 in FIG. A cap portion 230 configured opposite the notch region 226 from the flange 220 closes the groove 214 and prevents fluid flow therethrough. The cap 230 connects to the finger tab portion 234.
The tab portion 234 is used to break the notch region 226 and open the dispensing hole 236 through which liquid can flow.

[Brief description of drawings]

FIG. 1 is a perspective view of a pouch having a pump tube according to the present invention.

FIG. 2 is a bottom view of the pouch and pump tube as shown in FIG.

FIG. 3 is an enlarged sectional view taken along line III-III in FIG. 1 as a whole.

FIG. 4 is an enlarged partial cross-sectional view of the pouch / pump tube interface as shown in FIG.

5 is a partial cross-sectional view of another example of the pump tube shown in FIG.

6 is an enlarged front view of a portion of the tube shown in FIG.

7 is a partial cross-sectional view taken along line VII-VII in FIG. 6 as a whole.

8 is an enlarged front view of the nozzle shown in FIG.

9 is a bottom view of the nozzle shown in FIG. 8. FIG.

FIG. 10 is a front view of another example of the pump tube of the present invention.

11 is an enlarged view of an example of a nozzle for mounting in the pump tube of FIG.

[Explanation of Codes] 20 Pouch 26 Body 28 Pump Tube 30 Nozzle 34 Long Tube 44 Check Valve Composition 50 Tapered Hole

Claims (22)

[Claims] 1. A pouch for accommodating and dispensing an incremental amount of liquid, a body portion for accommodating a liquid supply amount; a nozzle configured to be squeezed by a dispenser device and having an end through which an incremental liquid amount is passed. A pouch comprising a tubing portion connected to the body portion and in fluid communication with the interior of the body portion, the tubing portion comprising a composition comprising butyl terpolymer rubber and polypropylene. 2. The composition comprises polypropylene 20-45.
Parts by weight, butyl terpolymer 55 to 80 parts by weight, oil 5 to 6
The pouch of claim 1 comprising 0 parts by weight and 2 to 20 parts by weight of the reinforcing filler. 3. The tube portion transitions into a cylinder portion having a discharge slit at the opposite end thereof, and the discharge slit is always closed, but operated by peristaltic pressure,
A pouch according to claim 1, wherein a constant incremental volume is passed therethrough. 4. The pouch of claim 3, wherein the nozzle comprises an elongated nozzle composition connected to the cylinder portion, the composition comprising a through groove communicating with the discharge slit. 5. A nozzle connector comprising a socket connector, the cylinder portion of which has an annular female plug molding, and an extending male plug portion which is fitted into the annular female plaque molding, wherein the cylinder portion is connected to the nozzle composition. The pouch of claim 4. 6. The tube portion is adjacent to the body portion,
The pouch of claim 1 including an outwardly directed annular flange at its first end, the body portion including a film nozzle portion sized and shaped to fit snugly within and adhere to the tube portion. 7. The pump tube comprises a bubble portion, the tube portion being connected to a valve portion, the valve portion comprising a narrow passageway having its interior open from the tube portion at one end to the nozzle at the opposite end, the valve portion comprising: The pouch of claim 1 surrounded by an elastic ring, wherein a ring throttle closes the narrow passage and peristaltic pressure opens the narrow passage to dispense the increment of liquid therefrom. 8. A finger tab portion having a nozzle closure, and a brittle joint arranged between the finger tab portion and the tube portion, wherein the brittle joint is broken by operating the finger tab portion. The pouch according to claim 1, wherein the nozzle is opened to discharge the liquid amount from the nozzle. 9. A pouch for accommodating and dispensing an incremental volume of liquid; a body portion for accommodating a supply of liquid; a nozzle designed to be squeezed by a dispenser device and through which the incremental volume of liquid passes With a pump tube,
At least one portion that is directly sealed to the body portion in the connection area of the body portion is connected to the inside of the body portion, the sealing portion is made of a first polyolefin material, and the connection area of the body portion is the first region. A pouch made of a compatible polyolefin material so that it can seal against the polyolefin material. 10. The first polyolefin material and the second polyolefin material
The pouch of claim 9 which is not the same as the polyolefin material of. 11. The pump tube comprises a cylinder having a thickness greater than the film thickness of the body portion, the pump tube thickness selected to create structural memory within the pump tube being squeezed by a dispenser device. The pouch of claim 9 which is provided. 12. A pouch for accommodating and dispensing an incremental liquid volume, a body portion for accommodating a supply liquid; a pump tube configured to be squeezed by a dispenser device, and for moving the incremental liquid volume therefrom. A check valve portion having a normally closed slit that can be opened by peristaltic pressure caused by squeezing of the pump tube, and a tube portion that is flow-connected to the tube portion and that is integrally configured with the tube portion. A nozzle portion terminating in the bore, wherein the nozzle portion and the check valve portion are provided with interlocking means therebetween connecting the nozzle portion to the check valve portion. 13. The check valve portion is a cylinder portion that transitions into the tube portion, and the slit is penetrated inside the closed end thereof;
A socket connector surrounding the cylinder portion;
13. The pouch of claim 12 comprising a plug, the nozzle portion having an axial groove terminating in a hole at the nozzle portion engaging within the socket connector. 14. The interlocking means comprises a rib extending radially outside the plug, and a groove formed inside the socket connector corresponding to the rib of the plug in a radial direction, the rib fitting the socket into the socket. 14. The pouch of claim 13, which interlocks when inserted into the connector to retain the nozzle composition in the cylinder. 15. The nozzle is covered by a cap having a finger tab portion extending therefrom, the cap being connected to the nozzle by a brittle joint, the finger tab portion configured to break the brittle joint and open the nozzle. The pouch according to claim 12. 16. A tube portion comprising 20 to 45 parts by weight of thermoplastic polypropylene and terpolymer rubber 80 to 5
The pouch of claim 12 comprising 5 parts by weight. 17. The tube portion is made of a material thicker than the body portion, the tube portion retains elastic structural memory after squeezing, and the connecting portion for the body portion is provided with an annular flange, the body portion for connecting to the tube portion. 13. The pouch of claim 12 having a film nozzle extending into the tube portion, the film nozzle being sealed against an inner surface of the tube portion. 18. A tube portion comprising 20 to 45 parts by weight of thermoplastic polypropylene and butyl terpolymer rubber 80 to
18. The pouch of claim 17, comprising 55 parts by weight, 5-60 parts by weight of oil, and 2-20 parts by weight of reinforcing filler. 19. A film nozzle wherein the tube portion comprises a flange pressed against the bottom of the body portion, the body portion extending downwardly into the tube portion and sealed against the inner surface of the tube portion. The pouch of claim 12 comprising a portion. 20. A pouch for accommodating and dispensing an incremental liquid amount, wherein a body portion for accommodating a supply liquid; a pump tube configured to be squeezed by a dispenser device, and a pump tube for moving the incremental liquid amount from the body portion; A tube part to be flow-connected, a check valve part having a closable hole connected to the tube part to flow-connect the tube part to the check valve part, and an elastic material which surrounds the check valve part and constantly closes the hole. O-ring,
The hole is opened so as to overcome the constriction due to the elastic O-ring due to the peristaltic pressure caused by the squeezing of the pump tube, and the check valve part connects the tube part to the discharge nozzle of the pump tube by flow connection. And a pouch comprising; 21. The pouch of claim 20, wherein the check valve portion is integrally formed with the tube portion. 22. The tube portion comprises 20-45 parts by weight of thermoplastic polypropylene and 80-butyl terpolymer rubber.
21. The pouch of claim 20, comprising 55 parts by weight, 5 to 60 parts by weight of oil, and 2 to 20 parts by weight of reinforcing filler.