JP2001058663A - Synthetic resin recycle cap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To securely prevent a user from pulling a holding piece by mistake when opening a cap at first by forming at least the lower end of the outer peripheral wall of the upper cover fixed to the cap body to make a double wall and housing the holding piece in the space to hide it by an outer cylinder. SOLUTION: A screw part 30 of an upper cover is screwed on the cylindrical screw part 20 of a cap body and the lower end face of an inner cylinder 26 is brought into contact with the upper face of the fitting upper wall 7 and the lower end face of an outer cylinder 27 is brought into contact with the upper face of the fitting side wall 12. A cap is driven into a container mouth 2 and an engaging projection 13 is engaged with an engaging recession 15. In this time, the pressing force of the upper cover is actuated to the fitting upper wall 7 to which the inner cylinder 26 contacts, and by adjusting the pressing force acting on the outer cylinder 27, breakage of a slit or the like is prevented. Meanwhile, the holding piece 16 is housed in the space 25 of the double wall W. In this way, the holding piece 16 is not exposed as long as the upper cover is not removed and hence, the holding piece 16 is surely prevented from being pulled by mistake before users open the cover at first.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cap to be separated and collected, and more particularly, to a synthetic resin recycle cap having a double-wall structure at the lower end of an outer peripheral wall of an upper lid.

[0002]

2. Description of the Related Art A synthetic resin cap comprising a cap body and an upper lid is attached to a container mouth. Recently, separation of containers and caps has been required in relation to resource recycling and waste disposal. However, in this cap, it is difficult to easily separate the cap since the engaging protrusion of the fitting side wall of the cap body is fitted and fixed to the locking recess of the container mouth by stoppering.

To solve this problem, the following caps have been used. That is, the cap body includes a cap body fitted into the container mouth, and an upper lid screwed to the cap body. The cap body includes a blocking wall capable of forming an opening for discharging contents, and the blocking wall. , A fitting side wall extending downward from an outer peripheral edge of the fitting upper wall, and a member provided on the fitting side wall and engaged with an engaging recess of the container opening. A synthetic resin cap comprising a mating projection, a slit provided in the upper wall of the fitting, a line of weakness continuing to the slit, and a holding piece provided on an upper surface of the side wall of the fitting.

[0004] In this cap, when the gripping piece is gripped and pulled at the time of sorting and recovery, the weakening line is broken and a part of the engaging projection is damaged. Therefore, the tightening force on the container mouth is released, and the cap can be easily removed.

[0005]

The prior art has the following problems. (1) In an example in which the holding piece is protruded from the outer peripheral surface of the fitting side wall, the consumer may erroneously pick and pull the holding piece at the first opening. (2) In the example in which a slit or a weakening line is formed on the upper wall of the fitting and the upper surface of the upper wall of the fitting is covered with the upper lid, the peripheral portion of the upper wall of the fitting when plugging,
In other words, since the response pressure of the upper lid acts on the upper surface of the fitting side wall,
The slit may be widened or the line of weakness may be broken to cause breakage.

SUMMARY OF THE INVENTION In view of the above circumstances, an object of the present invention is to prevent a gripping piece from being erroneously pulled at the time of first opening. Another object is to ensure that the slits and lines of weakness do not break when plugged.

[0007]

According to the present invention, there is provided a cap body fitted to a container mouth, an upper lid provided on the cap body so as to be openable and closable, means for fixing the cap body and the upper lid, The cap body has a blocking wall capable of forming an opening for discharging contents, a fitting upper wall provided outside the blocking wall, and extends downward from an outer peripheral edge of the fitting upper wall. A cap provided with a fitting side wall, an engaging projection provided on the fitting side wall, which is engaged with an engaging recess of the container mouth, and a tear start portion provided on the fitting upper wall. At least a lower end of an outer peripheral wall of the upper lid is a double wall having an inner cylinder and an outer cylinder opposed to each other via a space, and the inner cylinder is in contact with the upper surface of the fitting upper wall; It is characterized by the following.

According to the present invention, there is provided a cap body fitted into a container mouth and an upper lid provided on the cap body so as to be openable and closable. The cap body may form an opening for discharging contents. A blocking wall, a fitting upper wall provided outside the blocking wall, a fitting side wall extending downward from an outer peripheral edge of the fitting upper wall, An engaging projection engaged with the mating recess, a tear start portion provided on the upper fitting wall, a gripping piece provided on an upper surface of the fitting side wall near the tear start portion, A cylindrical screw portion erected on the inner peripheral edge of the upper lid, wherein a screw portion screwed to the cylindrical screw portion is provided inside the outer peripheral wall of the upper lid; At least the lower end of the outer peripheral wall is a double wall having an inner cylinder and an outer cylinder which are opposed to each other via a space, and the inner cylinder is on a fitting upper wall. Abuts on, characterized in that the finger-grip is housed in the space portion.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the present invention, at least the lower end of the outer peripheral wall of the upper lid screwed or engaged with and fixed to the cap body has a double wall. The double-walled inner cylinder is brought into contact with the upper surface of the upper fitting wall, and the pressing force at the time of tapping is received by the upper surface of the upper fitting wall, thereby preventing the slit and the line of weakness from breaking. Also, the holding piece is stored in the space of the double wall, and the holding piece is hidden by the outer cylinder, so that the holding piece is not accidentally pulled.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. The recycle cap 1 is made of a synthetic resin, for example, polyethylene, and has a cap body 3 fitted to the container opening 2 and an upper lid 5 screwed to the cap body 3.
It is composed of

The cap body 3 includes a blocking wall 6 and an upper fitting wall 7 formed outside the blocking wall 6.
On an upper surface of the blocking wall 6, a pull ring 9 surrounded by a score 8 and a pouring cylinder 10 are provided upright.

On the inner peripheral edge of the lower surface of the fitting upper wall 7, the fitting inner wall 1 is provided.
1, a fitting side wall 12 extends downward from an outer peripheral edge thereof. On the inner surface of the fitting side wall 12, an engagement projection 13 is provided.
The engagement projection 13 is engaged with the engagement recess 15 of the container mouth 2. On the inner peripheral edge of the upper surface of the fitting side wall 12, a holding piece 16 having an arc-shaped cross section is erected outwardly. The shape and size of the holding piece 16 may be changed as necessary. Selected as appropriate.

A tearing start portion, for example, a slit 17 is formed on the outer peripheral side of the fitting upper wall 7 along the inner surface of the holding piece 16. One end of the slit 17 is continuous with the semicircular circumferential weakening line 18, but the circumferential weakening line 1
8 extends along the fitting side wall 12. This slit 1
Reference numeral 7 may be a weakening line, and the length of the circumferential weakening line 18 is appropriately selected as needed. The other end of the slit 17 is continuous with the longitudinal weakening line 19. A cylindrical screw portion 20 is provided on the inner peripheral edge of the upper surface of the fitting upper wall 7, and the lower end of the screw portion 20 is connected to the fitting inner wall 11, and the upper end thereof is connected to the pouring tube 10. I have.

The top plate of the upper lid 5 is provided with a seal cylinder 21 which is in contact with the upper end of the pouring cylinder 10, and the lower end 23 of the outer peripheral wall 22 is opposed to the inner cylinder 26 and the outer cylinder 2
7 form a double wall W structure. The inner cylinder 26 contacts the upper surface of the fitting upper wall 7, and the outer cylinder 27 contacts the upper surface of the fitting side wall 12. The space 25 of this double wall W
The holding piece 16 is accommodated in the storage device. On the inner peripheral surface of the upper lid 5,
A screw portion 30 that is screwed with the cylindrical screw portion 20 is provided.

Next, the operation of this embodiment will be described.
The screw part 30 of the upper lid 5 is replaced with the cylindrical screw part 20 of the cap body 3.
The lower end surface of the inner cylinder 26 is brought into contact with the upper surface of the upper fitting wall 7, and the lower end surface of the outer cylinder 27 is brought into contact with the upper surface of the fitting side wall 12. Thereafter, the cap 1 is plugged into the container mouth 2, and the engaging projection 13 is engaged with the engaging recess 15. At this time, most of the pressing force of the upper lid acts on the fitting upper wall 7 with which the inner cylinder 26 abuts, and the pressing force on the upper surface of the fitting side wall which acts on the outer cylinder 27 is reduced. Therefore, the slit 17 and the circumferential weakening line 18 are not damaged.

Further, since the holding piece 16 is housed in the space 25 of the double wall W, it cannot be seen from the outside. Therefore, since the holding piece 16 is not exposed unless the upper lid 5 is removed, the holding piece 16 is not accidentally pulled before the consumer opens the cover for the first time.

At the time of sorting and collecting, when the upper lid 5 is removed and the holding piece 16 is picked and pulled, the weakened lines 18 and 19 are cut off and a part of the engaging projection 13 is also cut off. As a result, the tightening of the container opening 2 is loosened, so that the cap 1 can be easily removed from the container opening 2.

The embodiment of the present invention is not limited to the above, and may be, for example, as follows. (1) Instead of forming the circumferential weakening line 18 on the upper fitting wall 7, the weakening line 18 is provided continuously above one end of the slit 17 along the upper or lower portion of the engaging projection 13 of the fitting side wall 12. Further, instead of the longitudinal weakening line 19, the fitting side wall 1 is inserted from the other end of the slit.
An inclined weakening line extending in an oblique direction to the lower end of 2 is set.

(2) Instead of providing the slit 17 in the vicinity of the holding piece 16, a groove-shaped weakened line formed by cutting or the like is provided. (3) Instead of forming the holding piece 16 into an arc-shaped cross section, the holding piece 16 is formed into a front T-shape including a horizontal head and a vertical connecting portion.

(4) Instead of providing one holding piece 16, a plurality of holding pieces 16 are provided at intervals in the circumferential direction. (5) Instead of screwing the upper lid 5 and the cap body 3 together, an engagement connection, that is, a locking recess is formed in one of them and an engaging projection is formed in the other, and the locking recess is Engage with the engaging projection. (5) Instead of forming only the lower end portion 23 of the outer peripheral wall 22 of the upper lid 5 into a double wall structure, the entire outer peripheral wall 22 is formed into a double wall structure.

[0021]

According to the present invention, since the lower end of the outer peripheral wall of the upper lid has a double wall structure, the holding pieces can be accommodated in the space in the double wall. Therefore, unlike the conventional example, the consumer does not accidentally pull the holding piece at the time of the first opening. Also, since the upper surface of the fitting upper wall is in contact with the inner cylinder of the double wall, most of the pressing force applied to the upper lid at the time of tapping acts on the fitting upper wall with which the inner cylinder is in contact, and the outer cylinder has The pressing force acting on the upper surface of the fitting side wall is reduced. Therefore, unlike the conventional example,
The slits and lines of weakness are not damaged.

[Brief description of the drawings]

FIG. 1 is a partial sectional front view showing an embodiment of the present invention.

FIG. 2 is an enlarged view of a main part of FIG.

FIG. 3 is a partially sectional front view of a cap body.

FIG. 4 is a plan view of a cap body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Recycle cap 2 Container mouth part 3 Cap main body 5 Top lid 7 Fitting upper wall 12 Fitting side wall 13 Engagement convex part 15 Engagement concave part 17 Slit 22 Outer peripheral wall 23 Lower end part of outer peripheral wall 25 Space part 26 Inner cylinder 27 Outer cylinder W double wall

Continued on the front page F term (reference) 3E084 BA03 CA01 CB01 CB02 CB04 CC04 DA01 DB01 DB09 DB12 DB13 DC04 FA09 FB01 FC07 GA04 GA08 GB04 GB08 GB17 HA03 HB02 HC03 HD04 LA03 LB02

Claims (8)

[Claims] 1. A cap body fitted in a container mouth, an upper lid provided on the cap body to be openable and closable, and means for fixing the cap body and the upper lid, the cap body being A blocking wall capable of forming a content discharging opening, a fitting upper wall provided outside the blocking wall, a fitting side wall extending downward from an outer peripheral edge of the fitting upper wall, A cap provided on the mating side wall and having an engaging projection engaged with the engaging recess of the container mouth, and a tear start portion provided on the fitting upper wall; and an outer periphery of the upper lid. Synthetic resin characterized in that at least the lower end of the wall is a double wall having an inner cylinder and an outer cylinder which are opposed to each other via a space, and the inner cylinder is in contact with the upper surface of the fitting upper wall. Made recycling cap. 2. The synthetic resin recycling cap according to claim 1, wherein the means for fixing the cap body and the upper lid is a screw connection. 3. The synthetic resin recycling cap according to claim 1, wherein the means for fixing the cap body and the upper lid is an engagement connection. 4. A cap body fitted into a container mouth, and an upper lid openably and closably provided on the cap body, wherein the cap body is capable of forming an opening for discharging contents. A fitting upper wall provided outside the blocking wall; a fitting side wall extending downward from an outer peripheral edge of the fitting upper wall; An engaging projection that locks on the upper surface, a tear start portion provided on the upper fitting wall, a gripping piece provided on an upper surface of the fitting side wall near the tear starting portion, and an upper surface of the upper fitting wall. A cylindrical screw portion erected on an inner peripheral edge of the cap, wherein a screw portion to be screwed to the cylindrical screw portion is provided inside the outer peripheral wall of the upper lid; At least the lower end of the wall is a double wall having an inner cylinder and an outer cylinder opposed to each other via a space, and the inner cylinder is in contact with the upper surface of the fitting upper wall. And is, synthetic resin recycling cap, characterized in that the finger-grip is housed in the space portion. 5. The synthetic resin recycling cap according to claim 1, wherein the tear start portion is located in the space. 6. The synthetic resin recycling cap according to claim 1, wherein the tear start portion is a slit or a weakened portion. 7. The synthetic resin recycling cap according to claim 1, wherein the outer cylinder is in contact with the upper surface of the fitting side wall. 8. The synthetic resin according to claim 1, wherein the fitting upper wall is provided with a circumferential weakening line and / or a longitudinal weakening line continuous with the tearing start portion. Recycle cap.