WO2021009738A1 - Dispenser for flexible containers - Google Patents

Abstract

The present utility model relates to a dispenser device that allows, in only two steps, easy insertion into a flexible container, efficient dispensing, and 100% sealing against leaks, which device is made from a food-safe material, has a low cost and, owing to its shape, can be deep cleaned. Generally, the dispenser device is formed by two main elements: a valve body and a perforating plunger cap, the valve body containing the plunger cap.. When the plunger cap is inserted into the flexible container, it generates a channel or perforation for the subsequent insertion of the valve body, being coupled by the elastic restoring force of the flexible container, thereby generating a hermetic seal. In a first aspect, the valve body contains a concentric hole. The invention provides an alternative device for dispensing liquid or paste substances introduced into flexible bag-type containers, including Tetra Pak packages.

Description

RECTIFIED DESCRIPTIVE CHAPTER

DISPENSER FOR FLEXIBLE CONTAINERS

1. TECHNICAL FIELD.

This invention is related to the industrial sector who pack liquid or pasty substances in flexible or plastic containers, including Tetrapak that can be perforated by the device of this Utility Model and can be applied in the food industry and petroleum derivatives (call it lubricants , inks, liquid soap, shampoo, balms, etc.)

2. STATE OF THE ART.

Since flexible containers or disposable flexible packaging, due to their versatility to be coupled to different shapes and their low weight, they are part of one of the products with greater packaging applications within which are the flexible plastic packaging for food products that They need to comply with the different quality parameters and good manufacturing practices, to keep their content suitable for human consumption. Today they are more preferred by consumers due to their easy handling and low cost of food production without substantially increasing the price and marketing.

Food has different behaviors depending on the nature of the environment where it is kept, so its development must be linked to local atmospheric conditions, shelf life and the material to be packed.

This seems to be valid also for mass consumption and pharmaceutical sectors, in which cleaning liquids and some large volume solutions are preferably handled in flexible containers that, in addition to their low cost, allow safe handling while maintaining the sanitary conditions required during their operation. use. In the food sector it is found that 60% of milk consumers in countries like Canada, Poland and China prefer milk packed in bags http://bestinpackging.com/2011/06/30/ttapping-milk- froma- pouch /). At the local level, the panorama is not very different since according to data collected in 2013, 92% of the Colombian population prefers milk in a bag (http://www.portafolio.co/negocio/llegada-colombia-leche-evaporada ), while bagged water represents 40% of bagged water consumed in the country according to: data from 2007, http://www.dinero.com/negocios/articulo/el-agua- business- heats / 49360).

As mentioned above, the preference for products packed in this type of container can be attributed to their low cost, as well as their ease of handling, compared to products packed in rigid plastic containers (carafes), glass bottles and cardboard packaging such as the tetra pack among others.

However, the aforementioned advantages of products packed in flexible containers (liquid or pasty substances) have the disadvantage that when opened they oxidize in a shorter time and present the risk of cross contamination with odors from other products that are stored together. , in addition to being prone to generating spills and proliferation of bacteria. This is why consumers of the same require, more and more frequently, that these packages contain a device, adapter, dispenser, or some port to access the fluid that reduces these risks.

Currently, there are a number of flexible containers that comprise, according to their use, various devices that vary in shape, size, materials and operation and that allow access to the fluids contained in them, within which are those described then:

The application C014080.854 discloses a piercing valve device that includes: a piercing spout, a plug plunger, and a body, to allow the opening of flexible containers, said device provides an efficient sealing and dispensing but the piercing spout due to its sharp geometry It can cause leaks after an inadvertent perforation in another of the container surfaces resulting in difficult and complex use for immediate quick disassembly.

Patent US 8016808 B2 presents a device for perforating plastic bags that includes a piercing spout, a plug plunger, to print pressure and to allow the opening of the bag and means that prevent inadvertent perforation. This device is preferably designed as an insertable unit with a container for dispensing, and provides high security against inadvertent piercing due to shocks and transport vibrations. However, in the present development the device constitutes in itself a finished product of the pre-filled syringe type in which the bag, when perforated, is located inside the perforation device, to then transfer the released content to a distribution container. The design of the device necessarily entails a high complexity and a high manufacturing cost, in addition to making it unsuitable for repeated use or for the dispensing of large volumes. This is why the device could not be used as a dispenser for prepackaged drinks in low-cost flexible containers.

International publication WO / 2010/029129 presents a piercing device for bags of physiological fluids for medical use and the like, which contains a substantially tubular and hollow body inside for the temporary closure attached to the end of the bag that is inserted. pressure and is used for the supply of non-reusable and disposable medications.

Among other inventions, JP2013035547 discloses a drinking water bag piercing device for serving water comprising a needle piercing safely consisting of a cylindrical guide for lifting the hollow needle, (N), a valve (V ) to open and close the inside of the needle and a lower cover (B) to cover the needle, all assembled in one unit. Said apparently safe specific device that only for water in a bag and does not guarantee hermeticism or post-opening seal, making it complex to insert and, therefore, expensive to dispense liquids.

JP2012025421 discloses a tubular device for piercing a bag, containing fluids, whose structure is simple and its production cost is reasonable given that it has a tube-shaped member that ends in a base perpendicular to the axis of the tube, which in turn instead it extends downward in the form of a protrusion with a lower piercing end. The tube member has a fluid extraction opening between the base and the piercing end and as the tube passes through the bag it is pierced upon contact between the base of the device and the bag. However, the previous device does not present elements designed to ensure a seal after drilling, so subsequent leakage is possible.

The Jugit milk jug with perforator (a jug from the Alquería Colombia company) allows the bag to be contained within the structure and then be perforated with a lid that has a hollow perforation spout, which in turn allows the liquid to be dosed through this. Additionally, the lid provides a spout that makes pouring practical by allowing it to be opened and closed as often as desired. However, in this process liquid spills are generated that are deposited between the jug and the bag. Additionally, the product contained within the bag is exposed to odors and premature oxidation within the refrigerator, since a hermetic seal is not made after perforation.

The diplastic dispensing valve (Facebook.com/diplastic. Inventions) requires that the bag be held vertically to prevent leaks and spills that are often unavoidable and therefore requires holding devices that make it difficult to store in tight spaces. Additionally, the manipulation and insertion of the distribution system in the bags are a bit complex, so that a completely hermetic closure is not adequate, in all opportunities. On the other hand, the valve's keyed design would not allow deep cleaning.

The Tap it bag puncher (http: bestingpackaging.com/2011/06/30tapping-milkfrom-a- pouch /)

It has a conical design that allows a plastic bag to be pierced by sealing it with a pressing and semi-automatic adjustment mechanism composed of a flat ring and a spring on the outside, which is manually contracted before piercing the package and is automatically activated after the drilling. The type of assembly of the different pieces in the present device is complex and additionally requires a tap-type accessory that, in addition to increasing assembly time and cost, makes disassembly for deep cleaning extremely difficult, as well as reassembly for reuse. .

Patent US4493438 presents a removable assembly for dispensing fluids. This set pierces the bag where it expands a ring of small spheres in the first annular groove to temporarily lock the assembly and can then be removed by retracting the punches from the annular groove. Although this device is airtight when sealing the bag, the probability of

that is damaged is high because the spheres that can come out.

Patent US4475670 presents a dispenser for sealed plastic bags that store fluids that are damaged by air. The outer part of the cuff is attached to the outer part of the bag and cuts the bag by combining a rotational and longitudinal movement of the barrier within the cuff, where the fluid is dispensed through radial perforations through the barrier and the sleeve through a rotational adjustment of the cuff and barrier. However and although it dispenses fluids and seals the bag safely, this is a coupled body dispenser requiring more difficult parts to manufacture, therefore, the use is different from that of the present invention.

Application NC2016 / 0000779, device for insertion and dispensing valve for flexible containers consisting of two (2) parts, said device provides tightness and efficient dispensing, but in its body configuration it does not have an ergonomic grip, resulting in uncomfortable grip when moment of insertion which makes easy handling difficult. Despite the multiple solutions proposed in the state of the art for the dispensing of pre-packaged liquids in flexible containers, so far none of them comprises in a single embodiment, a device that safely pierces a flexible container and seals it in a secure manner. Hermetic avoiding the spillage of the liquids contained inside, easy to use and economical to manufacture, recyclable, reusable that reduces the contamination of non-biodegradable rigid plastics and avoiding cross contamination by preventing the migration of bacteria in food.

3. SHORT DESCRIPTION.

There is a need for alternative devices for the dispensing of liquid or pasty substances contained in bags or sachets that allow easy manipulation by the user (easy to insert and not inserted due to their unreliability due to their degradation process), which may be subjected to a deep cleaning, that generate reliable seals preventing possible undesirable leaks that are often unavoidable after drilling or opening the containers and that can be manufactured at a reasonable cost to allow access to all kinds of users, and also allow container storage in any position.

The valve device of this utility model allows easy insertion in just two steps

to the container, efficient dispensing, one hundred percent leak tightness and built in food grade material.

The present utility model has a fundamental principle of flexible containers as

It is the ideal elastic reset for device insertion and seal between parts. Additionally, due to the force of friction and friction, a second seal is produced between the elements of the dispensing device without having to unscrew the cap or seal, achieving

that the tightness of the closure is not affected until the final dispensing of the contents of the bag, at which time the device can be reused for another container.

In its general appearance, the device has different geometries in its structure that contribute to minimize effort and time when opening the pre-filled flexible container.

In the most general aspect, the Device of the present invention can be manufactured from a wide variety of materials, as long as these allow comfortable handling by the user, provide resistance to repeated use, allow deep cleaning without being affected. its physicochemical characteristics and that also favor one hundred percent efficient seals between the components and the perforated film.

In a particular aspect, the body of the valve is made of a malleable plastic material selected from polyethylenes of different densities of high, low and low linear; Copolymer, Homopolymer, and Random Polypropylenes; thermoplastic elastomers (TPE) and vulcanized thermoplastics (TPV) or mixtures of the above.

In a preferred embodiment of the invention, the valve body is made of a malleable plastic material selected from a polymer of different densities (high, low density and low linear) or polypropylenes; copolymers, homopolymers or Random or mixture of the above.

In a particular aspect, the valve piercing plunger-plug is made of a rigid plastic material selected from high polyethylenes and polypropylenes; copolymers; homopolymer, and Random; or mixtures of the above.

In a preferred embodiment of the utility model, the Plunger-cap is manufactured from rigid polyethylene or polypropylene or a mixture of the above. The difference between the hardness of the plastic materials that make up the elements of the Device, allows the seals between them and the perforated film to behave as gaskets to each other.

In another particular embodiment, the piercing plunger-cap and the valve body, polyethylene or

Rigid polypropylene will include silver nano-particles in its manufacture, recognized as particles that inhibit the incubation of bacteria, guaranteeing even more its safety.

The device or piercing valve of this utility model allows the efficient dispensing of liquids packaged in flexible pre-filled containers, exhibiting multiple advantages such as easy installation, reusable, safe and proof of leaks or liquid spills, making it one hundred percent reliable with respect to products. similar state of the art.

Additionally, the insertion, piercing and dispensing valve prevents the contents of the flexible container, cushion or sachet and even Tetrapak from being contaminated with aerobic bacteria or with

odors from other products stored together after piercing, as it provides a completely hermetic seal.

As an added value, the size of the inner hole of the valve body was designed with the purpose also that a straw of a thin diameter can be placed according to the content so that the content can be accessed after being pierced with the valve device, of which they are used very preferably in Tetrapak and other containers.

The flexible containers, after being perforated with the insertion, perforator and dispenser valve of the present utility model can be stored in any place and position without the risk of leaks or spills.

The design of the insertion, piercing and dispensing valve, its deep cleaning, as it is disassembled (removing the plug plunger) and the geometry of its components minimizes the existence of dead spaces, inside the parts where they could be stored residues and / or bacteria.

Materials of different hardness allow the device to be easy to use and grip; the body of the valve manufactured in malleable materials; its ergonomics are friendly to the user during handling; while the Plunger-cap made of rigid material allows the flexible container to be easily pierced. Also, the particular combination of materials of different hardnesses in the components of the device allows it to be 100% leak-proof.

4. DESCRIPTION OF THE DRAWINGS. FIG 1- Dispenser for flexible containers.

FIG 2- Piercing cap plunger (1) of the dispenser for flexible containers.

FIG 3- Valve body (2) dispenser for flexible containers.

FIG 4- Coupler of piercing plug plunger (1) and valve body (2).

FIG 5- Front view of the piercing plug plunger (1).

FIG 6- Longitudinal section of the piercing plug plunger (1).

FIG 7- Front view of the valve body (2).

FIG 8- Longitudinal section of the valve body (2).

FIG 9- External front view of the piercing plug plunger (1) and valve body (2).

FIG 10 - Internal front view of the piercing plug plunger (1) and valve body (2) coupling.

5. DETAILED DESCRIPTION OF THE UTILITY MODEL.

Some definitions are described in order to understand more clearly the characteristics

of the invention.

❖ Flexible Container: is any packaging, container, bag, sachet, cushion or envelope made of any flexible material with a thickness between 0.3 and 3 thousandths of an inch (7.6 to 16 microns or micrometers) that may contain liquid or pasty substances. .

❖ Convex rings: surface or curves that serve to describe something whose appearance is similar to the appearance of a sphere. Perfect solution to avoid leaks.

❖ Thread: Helical protrusion of a screw or nut.

❖ Threaded Surface: it is a helical surface, generated by a certain profile, whose plane contains the axis and describes a cylindrical helical trajectory of this axis.

❖ Hermetic: That closes perfectly so that it does not let air or liquid pass.

❖ Incision: Slit made in some bodies with a sharp instrument.

❖ Male female socket: seal that is generated between a perforation and a structural element, that is to say that there is a coincidence between the external geometry with the internal geometry of the elements or bodies.

❖ Elasticity: ability of the material to recover its original shape after being subjected to an effort.

❖ Elongation: stretching of a plastic without fracturing. The higher the stretch, the greater the shock absorption and the lower the possibility of rupture.

❖ Tensile Strength: expresses the force necessary for the rupture of a material when stretching a cross section of it. Plastics have a high resistance to being deformed

The dispenser for flexible containers of the present invention is composed of two main elements. A piercing plug plunger (100) and a valve body (200) (FIG 1) assembled as in FIG 4) such that the valve body (200) contains and retains the piercing plug Plunger (100).

In FIG. 2 and 5 the piercing plug plunger (100) is presented that comprises a cylindrical body (132) that extends from the conical body (120) to the oblique cut (121) followed by a conical body (130) to execute the perforation in the flexible container allowing its opening in a more subtle and comfortable way, which will later facilitate the insertion of the valve body (200) in the flexible container. At the other end of the conical cylindrical body (130) there is a stop that comprises an almost imperceptible rounded edge (131) that gives an additional adjustment to the assembly (FIG 1) with the valve body (200); Adjacent to the rounded edge (131) there is a cylindrical body (110) that supports and grips the piercing plug plunger, and a rounded edge (112) followed by fin-shaped grip protrusions (111) with three-dimensional conical geometry , for a better grip on your entire figure for a very comfortable ergonomics to the touch of whoever handles it, which is installed without much effort and removed manually.

The piercing plug Plunger (100) performs two functions; on the one hand, it allows the flexible container to be pierced and on the other hand it closes, providing airtightness of the dispenser for flexible containers.

The valve body (200) of Figure 3 and 7 in its upper external part a threaded conical geometric nozzle (201) with an inclination to produce a seal, also has cylindrical rings (202) with the same inclination, that cause between them in a subtle way the entry of the valve body (200) into the flexible container until it reaches the cylindrical body (210).

The valve body (200) at its conical end has an intentional or purposeful material cut (203) to facilitate the inclusion of the valve body (200) in the flexible container later with the help of the cylindrical rings (202), and at the other end (204) a cylindrical body (210) that extends on the horizontal axis out from the base of the threaded nozzle (201) and on the vertical axis in a three-dimensional conical geometric shape (220) of which protrusions are extended to facilitate the grip of the device at the time of use, and it is joined with the threaded conical geometric shape (201) by a cylindrical body (210) through a cylindrical edge (221), for a better grip in its entire figure, for ergonomics that are more comfortable to the touch and that it does not slip when handling, fulfilling a more secure grip function of the valve body (200). Preventing it from slipping like this with wet hands in a possible eventuality.

Finally, the function of the valve body (200) is to secure the piercing insert valve and

dispenser with the flexible container when forming the coupling (FIG 4) and additionally in Tetrapak because in its (5) or seven (7) capable it has flexible plastic, a flexible container is understood as a thermoplastic bag.

The piercing plug plunger (100) in Figure 5 shows a circular rim on the grip protrusions (111) to smooth the terminations, and in Figure 6 where piercing plug plunger (100) is observed in a solid and straight longitudinal section in its interior, where the grip protrusions (111) extend on the horizontal axis of the cylindrical body (130) and on the vertical axis in the shape of a fin with three-dimensional conical geometry. The valve body (200) of figure 8 longitudinal section shows a fluid channel (205) inside a cylindrical shape, a concentric hole (205), which crosses it in its entire length, passing through the nozzle and reaching its other extreme. The hole (205) being the fluid channel, the communication duct from the interior of the flexible container to its exterior. Said hole (205) has a taper equal to that of the piercing plug plunger (100), in particular the conical cylindrical body (130), that is to say that the valve body (200) fits inside the plug plunger (100). because they have the same conicity and external shape of the seal edge (231) (FIG 4) and are adjusted along their entire length forming a perfect seal, due to the force of friction and friction, to avoid post-drilling leaks for when it is withdrawn allows the pre-filled liquid from the flexible container to flow out.

To avoid post-perforation leaks and to keep the device secured to the flexible container after installation, two seals are generated: The first between the valve body and the flexible container and Tetrapak; and the second seal between the valve body (200) and the Plunger-plug (100).

FIGS 9 and 10 present the external and internal view of the valve body coupling (200) and the plug plunger (100); The valve body (200) on the outside is given with the piercing plug plunger (100) a harmonic perfect fit between the protrusions of the piercing plug plunger (100) and the protrusions of the valve body in a three-dimensional conical geometric shape (220), thanks to the coincidence of the internal geometry of the valve body (200) with the external geometry of the plug plunger (100), which completely prevents leaks from occurring.

MODALI DADES PREFERRED

In a preferred embodiment of the inversion, the valve body of the device is a cylinder which contains a longitudinal fluid channel inside it, therefore it acts as an access or communication port between the inside of the package and the outside. .

The valve body in its upper portion has a cone with a thread-like relief that, when manipulated, secures or presses the plastic film of the flexible container or bag, the inclusion valve generates the fit between them, preventing small leaks from occurring.

The valve body in its lower portion has a nozzle that serves to provide an efficient pouring of the liquid included in the flexible container and as well as a receptor for the piercing plug plunger. The piercing stopper Plunger comprises the gripping head, which in turn has a three-dimensional figure in its lower part to facilitate gripping and the slightly conical Plunger that, when inserted into the fluid channel, suspends the flow of the liquid from inside the container. flexible or bag to the outside, its function is specifically to allow or block the flow of the liquid and the perforation of the flexible container initially.

During the installation of the insertion, piercing and dispensing valve, the flexible container is punctured or punctured with the tip of the piercing plug Plunger, by doing this the plastic film of the packaging breaks and a hole is caused; The plastic film contracts to give way to the insertion of the valve body cone, then the plastic film expands to the diameter exerted by the insertion action, leaving the radius (male) of the valve body completely or integrally covered by the radius (female) of the flexible container, or coupling by elongation, that is, by the elastic restoring force and generating a first hermetic seal. On this cylindrical piece, the Plunger-perforating plug enters its interior in a sliding manner, generating another hermetic closure (second seal) by the force of friction and friction; which is one hundred percent effective for the fluid outlet of the flexible container, but allows its free flow each time said cap is removed.

In a preferred embodiment the diameter of the cylindrical body and the fluid channel will measure between 2mm and 10mm with a 1: 3 scale ratio with the gripping protrusions.

DESIGN EVALUATION

Different types of tips were molded for the piercing tip of the Plunger-cap and different tests were carried out to know the behavior of the plastic film with thicknesses between 0.3 and 3 thousandths of an inch (7.6 to 76 microns) when pierced with said tip. Thus it was established

the correct design of a comfortable tip, as well as establishing the correct angle of the plug Plunger taper and the valve body, and the need was found to include a slight geometry in the piercing tip of the Piercing Plug Plunger to ensure easy penetration and effective in the flexible container or bag.

MATERIALS

Tests were carried out for the selection of rigid and malleable plastic materials considering that they were sanitary acceptable and reusable. Different types of polymers were tested, mixtures with good resistance to friction in fits and durability were defined.

For the manufacture of the valve body, malleable plastic materials selected from polyethylenes of different densities were tested; high, low and low linear; Copolymeric, Homopolymeric and Random Polypropylenes; thermoplastic elastomers (TPE), and thermoplastics (TPV) or mixtures of the above.

The preferred materials for the manufacture of the piercing plug plunger were rigid polyethylenes, rigid polypropylenes, or a mixture thereof that in a preferred embodiment would perceive silver nanoparticles.

LIM PI EZA

After repeated use, the insertion, perforator and dispenser valve was washed with a circular brush, soap and hot water and it was observed that there were no spaces that contained residues after washing, verifying that the design of the device allowed access to the interior of the channels. of fluid to facilitate the hygiene process (flushing the insert valve).

EFFECTIVENESS AGAINST LEAKS

The device of the present utility model proved to be completely leak-tight after

perforation of the gasket as shown below. Several tests were carried out with the insertion, piercing and dispensing valve for the dispensing of liquids from pre-filled flexible containers, in which it was installed in a flexible container or bag with water content.

For 10 days, the flexible container was manipulated simulating daily use, placing different positions for a determined time for 24 hours, it was possible to establish the adjustment of the perforating Plunger-cap by exerting pressure on the perforating and dispensing insertion valve, it was removed and the Plunger-plug for 100 frequencies and they reported no leakage in the Plug Plunger, nor were there any leaks in the middle of the male body radius and the top of the cone and female radius of the bag.

Finally, we were able to conclude that the insertion, piercing and dispensing valve for the dispensing and dosing of liquids from pre-filled flexible containers is completely leak-sealed.

The design of the insertion, piercing and dispensing valve allows for deep cleaning, while it is removable (removing the plug plunger with a slight twist) and the geometry of its components minimizes the existence of dead spaces inside the parts where residues and / or bacteria could be stored.

Materials of different hardness allow the device to be easy to use; the valve body (200) manufactured in malleable materials; its ergonomics are friendly to the user during handling; while the Plunger-plug (100) made of rigid material allows the flexible container to be easily perforated. Likewise, the particular combination of materials of different hardnesses in the components of the device allows it to be 100% leak-proof.

Claims

1. Dispenser for flexible containers comprising a piercing plug plunger (100) and a valve body (200) where; The piercing plug plunger (100) comprises at one end a stop section (110), and at the other end, a conical body (120), joined by a cylindrical body (130). The valve body (200) comprises the fluid channel (205) in its interior, and in its external part, at one end a threaded conical geometry (201) and at the other end a three-dimensional conical geometric shape (220) . 2. The dispenser for flexible containers according to claim 1, wherein the piercing plug plunger (100) comprises at the base of the cylindrical body (130) a rounded edge (131) followed by the cylindrical body (110) and the rounded edge (112), which is attached to the gripping protrusions (111) in the shape of a fin with three-dimensional conical geometry. 3. The dispenser for flexible containers according to claim 1, wherein at one end of the piercing plug plunger (100) a cylindrical conical body (130) extends to the oblique cut (121) and a cylindrical body (132) that is It extends from the oblique cut (121) to the conical body (120). 4. The dispenser for flexible containers according to claim 1, wherein the valve body (200) comprises a threaded conical geometry nozzle (201) with a preferred inclination and thread profiles (202). 5. The dispenser for flexible containers according to claim 1, wherein the valve body (200) comprises at one end of the threaded conical geometry nozzle (201) a cut (203) and at the other end (204) a cylindrical body (210). 6. The dispenser for flexible containers according to claim 1, wherein in the valve body (200), the cylindrical body (210) extends on the horizontal axis out of the base (204) and comes into contact with the rounded edge (221) that meets the three-dimensional conic geometry (220). 7. The dispenser for flexible containers according to claim 1, wherein the valve body (200) and the piercing plug plunger (100) are coupled in such a way that the external figure of the three-dimensional conical geometric shape (220) extends up to the protrusions (111). 8. The dispenser for flexible containers according to claim 7, wherein the grip protrusions (111) coincide with the protrusions of the three-dimensional conical geometric shape (220) of the coupling between the valve body (200) and the piercing plug plunger (100). 9. The dispenser for flexible containers according to claim 1, wherein the taper and diameter of the fluid channel (205) of the valve body (200) is equal to the taper and diameter of the cylindrical body (130). 10. The dispenser for flexible containers according to claim 1, wherein the fluid channel (205) has the shape of the cylindrical body (130) and at one of its ends a sealing edge (231) equal to the rounded edge ( 131). 11. The dispenser for flexible containers according to claim 1, wherein the fluid channel (205) and the cylindrical body (130) have a measurement of between 2 mm and 10 mm. 12. The dispenser for flexible containers according to claim 1, wherein the coupling between the valve body (200) and the piercing plug plunger (100) have a 3 to 1 ratio with the grip protrusions (111). The dispenser for flexible containers according to claim 1 is made of a malleable plastic material selected from polyethylenes of high, low and low linear densities; polyethylenes infuse and Versity; Copolymer, Homopolymer, and Random Polypropylenes; thermoplastic elastomers (TPE) and vulcanized thermoplastics (TPV) or mixtures of the above. 14. The dispenser for flexible containers according to claim 13 is made of a malleable plastic material selected from polyethylenes of high, low and low linear densities and silver nanoparticles.