JP2006027667A - Spout with tamper-proof function - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide such a spout with tamper-proof function as secures stability in capping by lowering a band descending torque when capping and retains sanitary condition by making it easy to remove residual water due to cleaning of the spout, etc., with regard to the spout with tamper-proof function, which uses a screw cap with under-cut type tamper-evident band. <P>SOLUTION: With regard to a tamper-proof spout 1 consisting of a screw cap body 20 provided with a tamper-evident band 22 at an under-cut portion 20a and a mouth portion 10 provided with a neck ring 14 at its lower part, and having the tamper-evident band 22 being wound and fastened around the neck ring 14, a plurality of notches 14a are provided in the neck ring 14, the notches being perforated through the neck ring while having a helical form in approximately the same direction as a thread portion 12 of the mouth portion 10. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  TECHNICAL FIELD The present invention relates to a stopper with an unauthorized opening prevention function such as a liquid container, and in particular, an unauthorized opening using a screw cap having an unauthorized opening band having an undercut portion (locking portion) at a lower portion. The present invention relates to a stopper with a stopper function.

  Conventional methods to prevent unauthorized opening (plugs) of liquid paper containers and plastic bottles, such as applying tape to the mouth of the cap, or using a separate member such as a method of winding a shrink label, and unauthorized opening of the cap itself A method of providing a prevention function is known.

  As one of the methods for giving the cap itself a function for preventing unauthorized opening, for example, as shown in the explanatory view seen from the side of FIG. 7, an undercut portion (20a), that is, a screw, is provided at the lower portion of the screw cap body (20). When the cap is closed, the band is locked to the neck ring (14), and when the screw cap is opened, the band is locked to the neck ring (14). The tamper-resistant band (22) is wound around the neck ring (14) at the bottom of the mouth (10) (spout), and the screw cap body (20) is opened (plugged). Is removed from the threaded portion of the mouth portion (10) (turned counterclockwise), and the tamper-evident band (22) and the cap body (20) wound around the neck ring (14) are separated, and the tampering is not performed. A method of preventing band (22) is adapted to remain in the neck ring (14) (e.g., see Patent Document 1.).

The above prior art documents are shown below.
JP 2000-344265 A

  However, in the prior art, such as a method of providing the cap itself with an unauthorized opening prevention function, the peripheral edge of the neck ring (14) provided at the lower part of the helical thread portion (12) of the mouth portion (10) is Due to the uniform protrusion shape, the capping after the filling of the contents is lowered over the neck ring (14) with the tamper-evident band (22) at the bottom of the screw cap body (20). However, when tightening around the neck ring (14), the resistance increases and the torque for lowering the tamper-evident prevention band (22) (hereinafter referred to as the band lowering torque) increases. As a result, the capping is stable. There was a problem that capping failure occurred.

  In addition, the water that has entered the threaded portion (12) and neck ring (14) of the screw cap body (20) cannot be drained to the outside by filling the contents such as beverages and washing the mouth with a shower ring after capping. As a result, there is a problem that the mouth may be contaminated with microorganisms.

  The present invention solves the problems of the prior art, and the problem is that a screw cap with a tamper-evident band having an undercut portion (inner surface locking portion) at the bottom is used. Sanitary hygiene for caps with tamper-evident prevention function by reducing band descent torque during capping to ensure capping stability and easy removal of residual water by washing the cap after filling the contents. An object of the present invention is to provide a spigot with a tamper-evident prevention function that holds

In order to achieve the above object in the present invention, first, in the invention of claim 1, a screw cap provided with a tamper-evident band having a screw on the upper portion and an undercut portion on the lower portion, In the plug with a tamper-evident prevention function, which has a screw on the upper part and a mouth part provided with a neck ring at the lower part, and a band for preventing tampering is wound around the neck ring.
One or more notches or grooves are cut in the neck ring so as to penetrate in the vertical direction.

  According to a second aspect of the present invention, the notch or the groove has a spiral shape substantially in the same direction as the screw of the screw cap. It is what.

  According to a third aspect of the present invention, the radial maximum peripheral edge height of the neck ring has a helical shape substantially in the same direction as the screw of the screw cap. This is a plug with an unauthorized opening prevention function described in the above.

  The undercut portion referred to in claim 1 has a locking portion on the inner surface. For example, when the screw cap is closed, the undercut portion is locked to the neck ring of the mouth, and the neck is opened when trying to open the screw cap. Since it is locked to the ring, the tampering band can be cut.

  Since this invention is the above structure, there exist the following effects.

  That is, according to the first aspect of the present invention, there is a screw cap provided with a tamper-resistant band having a screw at the top and an undercut portion at the bottom, and a screw at the top, A mouth plug with a tamper-evident prevention function, wherein the neck ring is provided with a neck ring at the bottom, and a tamper-resistant band is wound around the neck ring. One or more notches are formed in the neck ring. Alternatively, when capping after filling the contents, the groove is engraved so as to penetrate in the vertical direction, and when tightening around this neck ring while lowering the tamper-evident band at the bottom of the cap body The resistance is reduced, the torque for lowering the tamper-evident band (band lowering torque) is reduced, and the stability of capping can be ensured.

  In addition, it is possible to make it easy to remove the remaining water by washing the plug after filling the contents by a notch or groove that penetrates in the vertical direction, and to make the plug with an unauthorized opening prevention function that contributes to maintaining hygiene. it can.

  Further, according to the invention according to claim 2, the notch or the groove is engraved in a spiral shape substantially in the same direction as the screw of the screw cap. Since the lower tamper-resistant band is rotated around this neck ring while rotating according to the helical screw, the torque that lowers the tamper-resistant band is lower because the resistance to lower by rotation is smaller. (Band descending torque) is further reduced, and it is possible to provide a plug with an unauthorized opening prevention function that can smoothly perform capping.

Furthermore, according to the invention according to claim 3, the cap main body is configured such that the maximum radial peripheral height of the neck ring protrudes in a spiral shape substantially in the same direction as the screw of the screw cap. Since the tamper-evident band at the bottom of the belt is wound around the neck ring while rotating according to the helical screw, the notch or groove engraving of claim 2 is substantially the same as the screw of the screw cap. In addition to the action and effect of the spiral shape in the same direction, the resistance to lower by rotation is further reduced, and the torque to lower the tamper-evident band (band lowering torque) is further greatly reduced, making capping even smoother As a result, it is possible to provide a plug with a function for preventing unauthorized opening, in which capping failure or the like does not occur at all.

  Therefore, the present invention exhibits an excellent practical effect as a cap with a function of preventing unauthorized opening of a liquid paper container, a bag-like container, or a plastic bottle.

  The best mode for carrying out the present invention will be described below in detail with reference to the drawings.

  FIG. 1 is a side view showing one example of a liquid paper container equipped with a spigot with an unauthorized opening prevention function of the present invention, and FIG. 2 shows a bag equipped with the cap with an unauthorized opening prevention function of the present invention. It is a side view which shows one example of a cylindrical container and a plastic bottle. 3 and 4 are explanatory views showing a side view of one example of the plug with an unauthorized opening prevention function of the present invention, and FIG. 5 shows another example of the plug with an unauthorized opening prevention function of the present invention. FIG. 6 is a side view showing one example of the capping process of the plug with the unauthorized opening prevention function of the present invention.

  In the present invention, for example, as shown in FIG. 1 (a), a screw cap body (20) provided with a tamper-resistant band (22) having a screw part at the upper part and an undercut part at the lower part. However, it is related with the plug (1) with an unauthorized opening prevention function wound around the mouth part (10) to which a neck ring (not shown) is connected at the lower part.

  For example, as shown in FIG. 1 (a), the mouth plug (1) with an unauthorized opening prevention function has a square columnar body (52), and a gable top type top as a lid on the upper part. The present invention can be applied to the liquid paper container (5) attached to the inclined plate (54) so as to easily pour the contents (liquid beverage or the like).

  For example, as shown in FIG. 2 (a), the cap (1) with an unauthorized opening prevention function of the present invention has a screw cap body (20) in which an unauthorized opening prevention band (22) is provided at the lower part. And a mouth part (10) provided with a neck ring (not shown) at the lower part, and seal the mouth plug (1) with an unauthorized opening prevention function to the upper edge seal part (62). It can also be applied to a bag-like container (6).

  Furthermore, as shown in FIG. 2 (b), the plug (1) with an unauthorized opening prevention function of the present invention has a mouth part (10) provided with a neck ring (not shown) at the lower part. A screw cap body (20) provided with a tamper-evident prevention band (22) at the lower portion is wound and the tamper-resistant plug (1) is connected to the mouth (10). It can also be applied to a plastic bottle (7) integrated at the top.

  In opening the cap (1) with an unauthorized opening preventing function attached to any of the liquid paper container (5), the bag-like container (6) and the plastic bottle (7), for example, FIG. ) When the screw cap body (20) is rotated counterclockwise (Q), the screw cap body (20) and the tamper-evident prevention band (22) are cut and separated, and the tamper-evident prevention band ( 22) only remains in the neck ring (not shown) of the mouth portion (10), and the mouth plug (1) with an unauthorized opening preventing function once opened in this way can be opened even if it is resealed. This can be easily understood from the appearance.

  Therefore, the invention according to claim 1 is, for example, a top view as shown in a side view (partially a side cross-sectional view) of FIG. 3A and a cross-sectional view of FIG. A screw cap body (20) connected to a tamper-evident band (22) having an undercut portion (20a) at the lower portion and a screw portion (12) at the upper portion. A tamper-resistant band which has a mouth portion (10) provided with a neck ring (14) at a lower portion thereof, and is connected to the lower portion of the screw cap body (20) with the neck ring (14). The mouthpiece (1) with an unauthorized opening prevention function (1) in which (22) is wound, and the notch (14a) penetrates vertically in the three places of the neck ring (14) and the upper part and the lower part penetrate. With tamper-evident prevention function characterized by being engraved It is a mouth plug (1).

  Thus, by providing the notch (14a) in the neck ring (14) so as to penetrate in the vertical direction, the screw cap body (20) to which the tamper-resistant band (22) is connected is connected to the neck ring ( At the time of winding (capping) 14), this notch (14a) reduces the resistance and reduces the band lowering torque, so that the occurrence of capping failure is eliminated.

  In addition, it is possible to make the water stopper (1) with an unauthorized opening preventing function that contributes to the maintenance of hygiene by facilitating the drainage of residual water due to the cleaning of the plug or the like by the notch (14a) penetrating in the vertical direction. it can.

  The number of notches (14a) engraved in the neck ring (14) may be one (place), but it is preferable to make it easy for water to escape by about 2 to 4, for example, FIG. As shown in (a), when the cap (1) with an unauthorized opening prevention function is attached to the top inclined plate (54) of the gable top type liquid paper container (5), 2 to 3 By providing the notch, at least one of them comes to the lower part of the plug (1) with the function of preventing unauthorized opening, so that water can easily escape. However, if it exceeds about four, moisture from the outside tends to invade, so it is not preferable that it is too much.

  Further, in the invention according to claim 1, instead of the notch (14a) shown in FIGS. 3 (a) and 3 (b), for example, a side view (partially a side sectional view) of FIG. As shown in the cross-sectional view of FIG. 4 (b) representing the -B surface, grooves (14b) are vertically formed in three portions of the neck ring (14) provided in the lower portion of the mouth portion (10), and the upper portion and the lower portion. It can also be set as the plug (1) with the unauthorized opening prevention function characterized by being engraved so that may penetrate.

  As described above, by providing a plurality of (three) grooves (14b) in the neck ring (14) so as to penetrate in the vertical direction, substantially the same functions and effects as in the case of the notches (14a), That is, the band lowering torque can be reduced and the capping stability can be ensured, and the remaining water can be easily removed by washing the plug (1).

  Further, the invention according to claim 2 is provided at the lower portion of the mouth portion (10) as shown in, for example, the side view of FIG. 5A and the cross-sectional view of FIG. The three notches (14a) carved in the neck ring (14) are substantially the same as the screw portion (12) provided on the screw cap, that is, the upper portion of the mouth portion (10). It is a spigot (1) with an unauthorized opening prevention function characterized by having a spiral shape in the direction.

In the invention according to claim 2, the neck ring (14) provided at the lower portion of the mouth portion (10) is replaced with the notch (14a) shown in FIGS. 5 (a) and 5 (b). In three places, a groove having a spiral shape substantially in the same direction as the screw portion (12) provided in the upper portion of the screw of the screw cap, that is, the mouth portion (10) is provided, and this groove penetrates the upper portion and the lower portion. It can also be set as the mouthpiece (1) with the unauthorized opening prevention function characterized by doing.

  As described above, the three notches (14a) or grooves (not shown) carved in the neck ring (14) provided in the lower portion of the mouth portion (10) are formed in the screw cap. That is, by having a spiral shape in substantially the same direction as the screw portion (12) provided on the upper portion of the mouth portion (10) having the same shape, for example, a side view of FIG. As shown in (Cross sectional view), when capping after filling the contents, the tamper-evident band (22) at the bottom of the cap body (20) is rotated clockwise (P) according to the helical thread (24). The neck ring (14) is tightened while being wound.

  As a result, the resistance to lower the cap body (20) by rotation becomes smaller, and the torque (band lowering torque) that the tamper-evident prevention band (22) falls over the neck ring (14) is further reduced. Capping can be performed smoothly, and the mouth plug (1) with an unauthorized opening prevention function free from capping defects can be obtained.

  Furthermore, the invention according to claim 3 is provided at the lower portion of the mouth (10) as shown in, for example, the side view of FIG. 5 (a) and the cross-sectional view of FIG. The apex (T) of the maximum peripheral edge height (H) in the radial direction of the provided neck ring (14) is provided on the top of the screw of the screw cap (not shown), that is, the mouth portion (10) having the same shape. It is a spigot (1) with a tamper-evident prevention function characterized by having a helical shape in the same direction as the threaded portion (12).

  As described above, the apex (T) of the peripheral maximum height (H) in the radial direction of the neck ring (14) provided at the lower portion of the mouth portion (10) is the screw of the screw cap, that is, the mouth portion having the same shape as the screw cap. As shown in the side view (partial cross-sectional view) of FIG. 6, for example, by having a spiral shape in substantially the same direction as the screw portion (12) provided at the top of (10). When capping after filling the contents, the neck ring (14) is rotated while the tamper-resistant band (22) at the lower part of the cap body (20) is rotated clockwise (P) in accordance with the helical thread portion (24). In addition to the effect of engraving the notch (14a), the resistance to be lowered by rotation is further reduced, and the tamper-evident band (22) becomes a neck ring (14). To descend over the road Click (band drop torque) is further reduced, the capping can be smoothly, occurrence of capping failure can be completely eliminated and becomes invalid unplugging prevention function spout (1).

  Further, in place of the notch (14a) shown in FIG. 6, a groove (not shown) also has substantially the same operation and effect, and the band lowering torque is further greatly reduced, and there is no occurrence of capping failure. It can be set as a stopper with an opening prevention function.

  Examples of the material of the cylindrical mouth portion (10) constituting the mouth cap (1) with an unauthorized opening prevention function of the present invention and the screw cap body (20) with an unauthorized opening prevention band (22) crowned thereon include injection. General-purpose resins that are excellent in moldability and that maintain hygiene and safety (no elution substances) can be mentioned. For example, polyethylene, polypropylene, polyethylene terephthalate, nylon, etc. are used, depending on the contents and applications. Selected.

  Moreover, it can be set as the screw cap main body (20) which the cylindrical opening | mouth part (10) and the tamper-evident prevention band (22) which crowns it connect by injection molding using these molten resin.

However, as shown in FIG. 2 (b), a plastic bottle (7) for storing a beverage and its mouth (1
Most of 0) are made of polyethylene terephthalate (PET) considering recyclability and toughness in addition to hygiene and safety.

  The plug (1) with an unauthorized opening prevention function of the present invention having the above material and form is the unauthorized opening at the bottom of the screw cap body in the capping step after filling the contents (liquid beverage such as juice). The band lowering torque when tightening the prevention band (22) while passing over the neck ring (14) formed in the mouth (10) is reduced as much as possible so that this capping defect is completely eliminated. In addition, even if water due to washing of the mouth portion (10) remains between the screws (12) of the mouth portion (10), it is discharged naturally, and microorganisms are generated in the remaining water. It is possible to provide a plug with a function to prevent unauthorized opening without fear of contamination due to spillage.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 illustrates one example of a liquid paper container in which a cap with an unauthorized opening prevention function of the present invention is mounted, (a) is a side view thereof, and (b) is a side view when opened. It is. It explains one example of another container in which the spigot with an unauthorized opening preventing function of the present invention is mounted, (a) is a side view of a bag-like container, (b) is a plastic bottle It is a side view. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 shows an embodiment of a spigot with an unauthorized opening prevention function of the present invention, in which (a) is a side view (partial side sectional view), and (b) is B- of (a). It is sectional drawing showing B surface. 1 shows another embodiment of a plug with an unauthorized opening preventing function according to the present invention, in which (a) is a side view (partial side sectional view), and (b) is a side view of (a). It is sectional drawing showing a BB surface. 1 shows still another embodiment of a plug with a tamper-evident prevention function of the present invention, in which (a) is a side view (partial side sectional view), and (b) is (a). It is sectional drawing showing the BB surface. It is a side view explaining 1 example of the capping process of the cap with an unauthorized opening prevention function of this invention. It is a side view explaining one example of the conventional stopper with a tampering prevention function.

Explanation of symbols

1 ··· Cap with unauthorized opening prevention function 5 ··· Liquid paper container 6 ··· Bag-like container 7 ··· Plastic bottle 10 ··· Port 12 ··· Screw portion of mouth 14 · · · Neck ring 14a ··· Cutting Notch 14b ··· Groove 20 ··· Screw cap body 20a ··· Undercut portion 22 · · · Tamper-resistant band 24 · · · Screw cap body screw portion · · · 52 Square pillar body portion · · · Top inclined plate 62 ··· Upper edge seal part H ... Maximum height of neck ring in the radial direction P ... Capping direction (clockwise)
Q ... Opening direction (counterclockwise)
T ... Radial vertex of the neck ring

Claims (3)

A screw cap provided with a tamper-evident band that has a screw at the top and an undercut at the bottom, and a mouth that has a screw at the top and a neck ring at the bottom In the plug with an unauthorized opening prevention function in which the band for preventing unauthorized opening is wound around the neck ring,
One or more notches or grooves are engraved in the neck ring so as to penetrate in the vertical direction.   2. The plug with an unauthorized opening prevention function according to claim 1, wherein the notch or the groove has a spiral shape substantially in the same direction as the screw of the screw cap.   The unauthorized opening prevention function according to any one of claims 1 to 2, wherein a maximum radial peripheral edge height of the neck ring has a spiral shape substantially in the same direction as a screw of a screw cap. With a spigot.

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