JP2009184718A - Spout - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a spout wherein the generation of a wavelike deformation on the flange section can be suppressed even when a carrying section for restricting the rotation of the spout is provided, and there is no leakage of a content liquid when being attached to a container opening section. <P>SOLUTION: This spout 10 for container which is manufactured by injection-molding or the like includes a thin-walled annular flange section 11, a cylindrical section 12, and the carrying section 15. In this case, the thin-walled annular flange section 11 is welded or bonded to the opening section B of a container A. The cylindrical section 12 is extended upward from the inner periphery of the thin-walled annular flange section. The carrying section 15 is held between a flange section 14 and the thin-walled annular flange section 11 on the lower outer periphery of the cylindrical section, and includes an outer peripheral surface 16 having a parallel surface which is regulated in one direction and an inner peripheral surface 18 having the same shape. A transverse cross-section of the carrying section is provided in such a manner that a difference in wall thickness t of the total periphery of the carrying section may be minimized. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  INDUSTRIAL APPLICABILITY The present invention is used by being welded or bonded (referred to as “adhering” inclusive of both) to an opening of a bag-like container or paper container filled with a liquid or mucilage such as soft drinks, high-functional foods, and industrial chemicals. The present invention relates to a pouring tool having a spout for pouring out a liquid content (liquid or viscous material) in a container.

A container such as a flexible bag-like container or a paper container is often used with a pouring tool having a pouring outlet for pouring the content liquid.
In such a pouring tool, the upper pouring outlet is sealed with a cap, and the lower flange portion is fixed to the container opening, and as shown in FIG. 6, both sides of the transport section 52 provided in the pouring tool 50 are provided. When the cap is attached to the pouring tool 50, a parallel surface is formed on the conveying portion 52 of the pouring tool 50 so that the position in the circumferential direction of the pouring tool 50 is always kept constant. The rotation of the pouring tool 50 is regulated by the two transport rails R.
Regarding such a pouring tool, for example, in Patent Document 1 (Japanese Patent Laid-Open No. 11-1268), a parallel surface or an aerial parallel surface that can be set in a certain direction with respect to the flow direction of the bag on which the pouring tool is mounted. There is described a bag-in-box pouring tool in which a chucking portion having the above is provided in a tube portion of the pouring tool so that a stable filling operation can be performed.
JP-A-11-1268

However, since the conventional dispensing tool has a thick part and a thin part formed in the transport part, it is affected by the difference in shrinkage when the molten resin is cooled. There is a problem that the flange portion directly connected to the portion is deformed into a wave shape.
Such a wavy form generated in the flange portion may cause a fixing failure when the pouring tool is fixed to the container opening. Therefore, the sealing with the container opening cannot be maintained, and there is a possibility that the problem that the liquid content leaks may occur.

  Therefore, in order to solve the above problems, the present invention can reliably prevent the occurrence of wave-like deformation in the flange portion formed below the pouring tool, even if the conveying portion having a parallel portion is provided in the pouring tool. An object of the present invention is to provide a pouring tool that prevents improper adhering when adhering the flange portion to the container opening, and thus prevents the content liquid from leaking from the adhering portion.

The pouring tool of the present invention is a pouring tool having a spout for welding or adhering to the opening of the container and pouring the content liquid, and a thin annular flange portion welded or bonded to the opening of the container, A tubular portion extending upward from the inner periphery of the annular flange portion, and the tubular portion is provided with a flange portion on the lower outer periphery thereof, and the tubular portion between the flange portion and the flange portion Is composed of a transport section composed of an outer peripheral surface having a parallel surface regulated in at least a certain direction and an inner peripheral surface of the same shape, and the cross section of the transport section is the difference in thickness of the entire circumference of the transport section Are arranged and configured to be as small as possible.
Furthermore, in the extraction tool of this invention, in addition to the said structure, the said conveyance part has the characteristics that the surface where the outer peripheral surface opposes has four parallel.

  According to the present invention, even if a transport part having a parallel surface is provided between the collar part of the pouring tool and the thin annular flange part, the difference in thickness of the entire circumference of the transport part is reduced as much as possible. Therefore, it is possible to prevent the occurrence of wavy deformation due to the effect of the difference in shrinkage at the time of molding cooling at the thin annular flange portion, and it is possible to reliably prevent improper adhesion when adhering to the container opening. .

The pouring tool of the present embodiment is an pouring tool that is manufactured by injection molding and is attached by welding or bonding to an opening of a container such as a bottle container, a pouch, or a paper container, and can be fixed to the opening of the container. And a cylindrical part that allows liquid to pass through the center part of the flange part, and the tip of the cylindrical part is a spout for pouring out the liquid, below the cylindrical part A flange is provided on the outer periphery, and a cylindrical portion between the flange and the flange is provided with a conveying portion comprising an outer peripheral surface having a parallel surface and an inner peripheral surface having the same shape as the outer peripheral surface. Furthermore, the thickness of the entire circumference of the transport unit is arranged so that the difference is as small as possible.
The pouring tool of the present embodiment is arranged so that the difference in the wall thickness of the entire circumference of the conveying portion is reduced as much as possible even if a parallel portion for restricting the rotation of the pouring tool is formed in this conveying portion. By doing so, the wavy deformation of the thin annular flange provided below the pouring tool is prevented.

The thin annular flange portion is a thin annular portion formed outwardly in a disc shape below the pouring tool, and is a portion that is welded or adhered to the opening of the container to be fixed.
Therefore, if the thin annular flange is deformed in a wave shape, poor adhesion to the container occurs, sealing with the container is hindered, and leakage of the content liquid is caused. Is particularly required.

The tubular portion is a substantially cylindrical tubular member extending upward from the inner periphery of the thin annular flange portion, and a screw portion or the like for attaching a cap for closing the upper spout is formed on the side wall. ing.
In addition, on the lower outer periphery of the cylindrical part, a hook part extending outwardly in a bowl shape with a predetermined vertical interval is provided, and during the transportation after the container is filled with the internal solution, By passing a pair of transport rails between the collar and the thin annular flange, the circumferential position of the pouring tool can always be fixed with respect to the flow direction of the container. In addition, it can always be fixed in a certain direction, and furthermore, a force against the tightening torque and the opening torque when the cap is attached and detached can be applied.
In addition, as a conveyance rail, what maintained the parallel with the space | interval of about 20 mm about the metal rod about 3 mm in diameter is applicable.

The conveying part is provided between the flange of the cylindrical part and the thin annular flange part, and is a part that forms an outer peripheral surface having a parallel surface restricted in at least a certain direction. When the circumferential direction angle with respect to the central axis of the pouring tool can be held at a predetermined angle with respect to the conveying direction of the pouring tool that is conveyed while being held between the rails, thereby attaching a cap to the pouring tool The operation of is surely performed.
In addition, since the conveyance part is comprised by the parallel four surfaces where the outer peripheral surface opposes, rotation is controlled by the conveyance rail and it can perform the operation of attaching a screw cap more reliably.

Further, it is desirable that the inner peripheral surface and the outer peripheral surface of the transport unit have the same shape (similar shape), and the thickness of the entire circumference is as uniform as possible, and the difference between them is close to zero.
By making such a cross section with a substantially uniform cross section, the amount of shrinkage of the transport section can be equalized during cooling after molding the pouring tool, and the wavy deformation of the thin annular flange connected to the transport section Can be prevented.
In addition, that the difference in the thickness of the entire circumference of the transport unit is as small as possible means that the thickness of the cross section of the transport unit is constant in the circumferential direction of the transport unit.

  The pouring tool is a member that is attached to an opening of various plastic bag-like containers or paper containers by welding or bonding through a thin annular flange provided below the cylindrical portion of the pouring tool. For example, it is manufactured by pressing a resin melted by heating into an injection mold at a predetermined injection pressure and cooling it after molding.

  As a resin material constituting the pouring tool, for example, an olefin resin which is a thermoplastic resin, for example, low density polyethylene (LDPE), medium density polyethylene (MDPE), high density polyethylene (HDPE), linear low density polyethylene (LLDPE). ), Polyethylene (PE) such as linear ultra-low density polyethylene (LVLDPE), polypropylene (PP), ethylene-propylene copolymer, polybutene-1, ethylene-butene-1 copolymer, propylene-butene-1 copolymer A polymer, an ethylene-propylene-butene-1 copolymer, an ethylene-vinyl acetate copolymer (EVA), an ion-crosslinked olefin copolymer (ionomer), or a blend thereof can be used. It can also be used for all thermoplastic polyester resins, such as other polyesters such as ethylene terephthalate thermoplastic polyester (PET), polybutylene terephthalate (PBT), polyethylene naphthalate (PEN), and polycarbonate and polyarylate. Blends with these can also be used. In addition, it is necessary to select in consideration of weldability and adhesiveness with the container.

  Embodiments of the present invention will be described below with reference to the drawings. 1 is a left half sectional right side view of an extraction tool according to an embodiment of the present invention, FIG. 2 is an XX sectional view of FIG. 1, and FIG. 3 is an XX sectional view of FIG. FIG. 4 is a plan view seen from the flange side, and FIG. 4 is a left half cross-sectional right side view showing a mode in which the dispensing tool according to the embodiment of the present invention is fixed to the container opening, and FIG. It is the left half section right view which shows the extraction tool which concerns on the Example of this invention with the container.

  As shown in FIGS. 1 to 5, the pouring tool 10 of the present embodiment includes a disk-shaped thin annular flange portion 11 fixed to the opening B of the container A, and an upper portion from the inner periphery of the thin annular flange portion 11. A cylindrical portion 12 is provided, and a screw 13 for screwing the cap C is formed on the outer periphery of the cylindrical portion 12.

In addition, a spout 19 for pouring the content liquid in the container A is provided above the tubular portion 12 of the pouring tool 10, and a collar portion 14 is provided on the lower outer periphery of the tubular portion 12. It is formed to extend outward in a shape.
The cylindrical portion between the flange portion 14 and the thin annular flange portion 11 is provided with a conveying portion 15 composed of four parallel surfaces restricted in at least a fixed direction.
The conveying unit 15 is configured such that the surface facing the outer peripheral surface 16 is sandwiched between a pair of left and right conveying rails R (not shown but similar to FIG. 6), and the dispensing tool 10 is conveyed. . Here, “having at least a parallel surface regulated in a certain direction” means that a parallel surface having the same direction as the direction of the transport rail R that transports the extraction tool 10 is provided in the transport unit. However, it is not necessary for the entire surface of the transport unit to be parallel, as long as the rotation of the extraction tool 10 held by the transport rail R can be regulated.
In addition, the inner peripheral surface 12a of the cylindrical part located above the collar part 14 has a cylindrical shape (see FIG. 3).

Furthermore, the conveyance part 15 is formed between the collar part 14 and the thin annular flange part 11, the shape of the inner peripheral surface 18 is the same shape (similar shape) as the outer peripheral surface 16, and the circumferential thickness t Is as uniform as possible and its dimensional difference is preferably close to zero.
Thereby, in the conveyance part 15, the shrinkage | contraction amount of the resin produced when the extraction tool 10 is cooled after injection molding can be equalized, and generation | occurrence | production of the wave-like deformation | transformation to the thin annular flange part 11 connected to the conveyance part 15 is prevented. Can do.
In the present embodiment, the four adjacent portions forming the feeding portion 15 are formed on the curved surface 17.

  In the present embodiment, the pouring tool is molded by injection molding using high-density polyethylene (HDPE) as a molding material. As an example of the main dimensions, the diameter of the thin annular flange portion 11 is 33 mm, and the inner diameter of the cylindrical portion 12 is 16.3 mm, the thickness t of the cylindrical portion 12 is 1.5 mm, the diameter of the collar portion 14 is 24 mm, and the conveying portion 15 is an outer peripheral surface 16 having a side in the longitudinal direction of 18 mm and a height direction of 3.3 mm. The four corners of the enclosed quadrangle in the circumferential direction were chamfered with the curved surface 17.

  By providing such a conveyance part 15 below the pouring tool, it is possible to suppress the occurrence of wave-like deformation to the thin annular flange part 11 at the time of molding the pouring tool and to be sandwiched between the pair of left and right conveying rails R. Thus, the extraction tool 10 is conveyed, and the rotation of the extraction tool when the cap is attached can be restricted.

As described above, the dispensing tool according to the present invention is provided with the conveying portion formed between the outer peripheral surface having at least a certain parallel surface and the inner peripheral surface having the same shape between the flange portion and the thin annular flange portion. What is related to this belongs to the scope of rights of the present invention.
For example, the overall shape of the conveyance unit that is sandwiched between the conveyance rails and restricts the rotation of the pouring tool may be a polygon such as a hexagon, an octagon, or the like other than the quadrangle mentioned in this embodiment, and at least constant. What is necessary is just to have the outer peripheral surface which has a parallel surface regulated by the direction of.

  Since the dispensing tool of the present invention is provided with a conveying part that can eliminate the difference in the amount of shrinkage of the resin during molding, even if the flange part is thinned, the occurrence of wave-like deformation can be suppressed and attached to the container opening. Sometimes there is no leakage of the content liquid, and the industrial applicability is extremely high.

It is a left half cross section right view of the extraction tool which concerns on the Example of this invention. It is XX sectional drawing of FIG. It is the top view which looked at XX sectional drawing of Drawing 1 from the flange side. It is a left half cross section right view which shows the aspect which fixed the extraction tool which concerns on the Example of this invention to the container opening part. It is a left half cross section right view which shows the extraction tool which concerns on the Example of this invention which attached the cap with a container. It is explanatory drawing which showed the state by which the extraction tool of a prior art example is clamped by the conveyance rail, and is conveyed.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Pouring tool 11 Thin annular flange part 12 Cylindrical part 12a Cylindrical part inner peripheral surface 13 Screw screw 14 ridge part 15 Conveying part 16 Outer peripheral surface 17 Curved surface 18 Inner peripheral surface 19 Outlet A Container B Opening part C Cap R Conveying rail t Thickness

Claims (2)

A pouring tool having a spout for welding or adhering to an opening of a container and pouring the content liquid,
A thin annular flange that is welded or bonded to the opening of the container;
A cylindrical portion extending upward from the inner periphery of the annular flange portion,
The tubular portion is provided with a flange on the lower outer periphery thereof,
The cylindrical part between the flange part and the flange part consists of a conveying part consisting of an outer peripheral surface having a parallel surface restricted in at least a fixed direction and an inner peripheral surface of the same shape,
The pouring tool is characterized in that the cross section of the transport section is arranged so that the difference in thickness of the entire circumference of the transport section is as small as possible. The extraction tool according to claim 1, wherein the conveying unit has four surfaces whose outer peripheral surfaces are opposed to each other.

Images