JP2003040313A - Synthetic resin spouting cap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bottle-like vessel of low manufacturing cost, high operability and safety, and easily fractional recovery. SOLUTION: A synthetic resin spouting cap comprises a flexible synthetic resin cap body 1 having an assembly cylinder 2 to be externally locked to a bottle mouth cylinder 20, tightly fitted to the bottle mouth cylinder to form a spout 9, and a hard synthetic resin outer cap body 10 having an externally fitting cylinder 13 abutted on and externally fitted to the assembly cylinder having a locking piece circumferential bar 13a locked to a lower end face of the assembly cylinder and having a topped cylindrical lid body 15 integrated therewith via a hinge part 16 to open/close the spout. The assembling strength of the cap body with the bottle mouth cylinder is set so as to be manually detached when the outer cap body is detached. The assembling strength of the cap body with the outer cap body is set so as to realize manual detachment in a forcible plucking-off manner by setting the projection height of a locking piece circumferential bar of the exterior cylinder to easily realize separation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a cap body assembled to a bottle mouth bottle and having a spout for the content liquid, and an outer cap body for opening and closing the spout of the cap body. The present invention relates to a synthetic resin pouring cap configured so that it can be easily separated and collected at the time of disposal.

[0002]

2. Description of the Related Art Bottle containers made of synthetic resin that are lightweight, have excellent strength, and are inexpensive are widely used as containers for containing drinking water, liquid seasonings and the like. The spout cap used for the mouth of such a container generally has a spout, and is composed of a cap body that is fitted and assembled to a bottle mouth cylinder and an outer cap body that opens and closes the spout. The outer cap body is often provided with a hinged lid body because of its convenience.

On the other hand, from the viewpoint of effective use of resources, it is required to separately collect the bottle and the spout cap in order to efficiently reuse the bottle container made of synthetic resin. There is.

[0004] In response to the above request, actual Kaihei 6-59247
In the gazette, the shape of the fitting portion of the cap body to the bottle mouth tube is made to be a divergent shape, slits, etc. are made to facilitate easy removal at the time of separate collection, while the outer cap body is There is a description about a method of preventing the cap body from coming off the bottle sleeve by abutting the exterior of the fitting portion.

[0005]

However, in the conventional technique disclosed in Japanese Utility Model Laid-Open No. 6-59247, the outer cap body is screwed and assembled to the cap body, and the structure for screwing is used. However, the structure is complicated because it is required for both the cap body and the outer cap body, and it is necessary to first assemble and assemble the cap body to the bottle mouth cylinder, and then screw and assemble the outer cap body. There is a problem that the production cost becomes high due to the decrease in speed. Therefore, the object of the present invention was devised in order to solve the above-mentioned problems in the prior art. The cap body and a pouring cap composed of an outer cap body having a hinge structure are attached to a bottle body. Manufacturing cost is low and high by realizing productivity improvement in process, stable retention of assembling strength with bottle cap at the time of use, and easy separation treatment from bottle with simple structure. An object is to provide a bottle container having operability, safety, and easy separation and recovery.

[0006]

[Means for Solving the Problems] Of the present invention for solving the above technical problems, the means of the present invention according to claim 1 is externally fitted to a bottle mouth tube, and the outer peripheral surface of the opening portion of the bottle mouth tube is fitted. A locking projection that rides over and locks the provided bottle-holding peripheral strip has a built-in cylinder that is provided around the inner peripheral surface of the lower end, and is tightly fitted to the bottle mouth cylinder to form a spout. An outer cylinder that has a cap body made of soft synthetic resin, and has an inner peripheral surface of a lower end portion around which a locking piece circumferential line that engages with the lower end surface of the assembling cylinder of the cap body is provided and abuts against the assembling cylinder. An outer cap made of a hard synthetic resin, which has a top-end cylindrical lid integrally provided on the upper end of the exterior cylinder through a hinge part, and which has an exterior assembly on the cap body to open and close the spout. It has a body and the strength of assembling the cap body to the bottle mouth can be removed manually with the outer cap body removed. Set the protrusion height of the locking piece peripheral strip in the outer cylinder so that the strength of the assembly of the cap body and the outer cap body is such that it can be removed manually in a forcible mogkin-like manner. That's right.

According to the above-mentioned constitution of claim 1, since there is no portion to be screwed and assembled, when the spout cap is fitted and assembled to the bottle mouth barrel, the outer cap is covered with the cap while being covered with the outer cap. , At the same time, the fitting assembly of the cap body to the bottle mouth and the fitting assembly of the outer cap body to the cap body are achieved.

That is, at the time of stoppering, the locking projection of the assembled cylinder of the cap body rides over and locks on the bottle locking peripheral of the bottle mouth cylinder, and at the same time, the inner peripheral surface of the lower end portion of the outer cylinder of the outer cap body is locked. Since the provided locking piece peripheral strip is locked to the lower end surface of the assembling cylinder of the cap body, the attachment of the spout cap to the bottle mouth cylinder can be achieved by a simple process.

When the spout cap is attached to the bottle mouth cylinder, the cap body is made of soft synthetic resin, so that the sealing effect between the assembling cylinder and the bottle mouth cylinder is exerted, and it is made of hard synthetic resin. The highly rigid exterior cylinder exerts a function of suppressing flexural deformation of the assembling cylinder in the radial expansion direction while being locked to the lower end surface of the assembling cylinder.

Due to the above-mentioned sealing effect and the function of suppressing the flexural deformation, the sealing property of the content liquid is surely maintained, and, for example, a water hammer-like force generated when the bottle container is turned upside down and shaken. It is possible to secure sufficient assembling strength so that the spout cap does not come off even if it is applied.

When the pouring cap is separated and collected after the content liquid is consumed, the outer cap body is first grasped by hand, and the pull-out gripping removal operation is performed to remove the outer cap body from the lower end surface of the assembled cylinder. The outer cap body is removed from the cap body while releasing the locking of the cap body from the locking piece of the outer cylinder, but at this time, the outer cap body is made of hard synthetic resin, and is expanded in the radial direction of the outer cylinder. The bending deformation of is small, and it is difficult to disengage the locking piece peripheral strip of the outer cylinder from the lower end surface of the assembled cylinder only by this bending deformation.

However, since the outer cap body is made of a hard synthetic resin and the cap body is made of a soft synthetic resin, a hard synthetic resin member is removed in accordance with the forcible removal of the outer cap body. By the circumference of the stop piece
A crush-like deformation can be generated in the vicinity of the lower end surface of the assembly cylinder made of a soft synthetic resin, and while the crush-like deformation is performed, a slight bending deformation in the radial direction of the outer cylinder causes the deformation. It is possible to achieve the disengagement of the engagement between the lower end surface and the locking piece peripheral strip.

Further, since the outer casing is made of a hard synthetic resin having a high rigidity and is difficult to be flexibly deformed in the radial direction, the height of the ridge of the locking piece around the outer casing is not required to be so high. Since the lower end surface of the assembled cylinder and the locking piece circumferential line of the outer cylinder are exerted, the cap body of the outer cap body can be removed from the cap body of the outer cap body even with a relatively small force by a forcibly removing operation. It is possible to set the protruding height of the locking piece peripheral strip to a small value so that it can be removed.

Next, the cap main body is removed from the bottle mouth cylinder. By setting the strength of assembling the cap main body to the bottle mouth cylinder so that it can be manually removed with the outer cap body removed, This removal can be easily realized.

Upon removal, it is necessary to disengage the locking projections of the cap body's mounting cylinder from the overhanging engagement with the bottle mouth cylinder and the bottle mouth locking periphery by bending deformation of the assembly cylinder in the radial direction. However, since the outer cap body has already been removed, the suppression of expansion deformation due to the outer cylinder has been eliminated, and the assembly cylinder uses a soft synthetic resin that is easily deformed. The thickness of the cap body, or by forming a structure such as a split groove in the assembling cylinder, it is possible to set the assembling strength of the cap body to the bottle mouth cylinder.

According to a second aspect of the invention, in addition to the constitution of the first aspect of the invention, the cap body is made of a soft polyolefin resin (hereinafter referred to as soft PO), and the outer cap body is made of a hard polyolefin resin. It is made of resin (hereinafter referred to as hard PO).

According to the second aspect of the present invention, the soft PO is a material having sufficient softness as the cap body, is fitted to the bottle barrel, and exerts a sealing effect to sufficiently seal the content liquid. The outer cap body made of hard PO has a sufficiently high rigidity with respect to the cap body, and when the bottle container is used, the assembled pipe made of soft PO is brought into contact with the outer casing made of hard PO. By the contact and exterior, the bending deformation of the assembling cylinder in the radial expansion direction is reliably suppressed, and the assembling of the cap main body with respect to the bottle mouth cylinder is stably and firmly maintained.

Further, in order to stably realize both the attachment of the outer cap body to the cap body and the detachability at the time of separate collection, the height of the protrusion on the circumference of the engagement piece of the outer casing is adjusted. Requires high dimensional accuracy, but hard PO is soft PO
Compared with, the dimensional accuracy of the molded product is excellent, and the designed dimensional accuracy can be surely achieved also for the height of the protrusion.

According to a third aspect of the present invention, in addition to the constitution of the first or second aspect of the invention, a cap body is provided, and a seal cylinder is hung down from the upper end of the assembled cylinder via an inner collar-shaped top wall. , From the lower end of this seal tube through the inner flange-shaped bottom wall, to the sealing wall that is the top wall, is partitioned and formed by the rupture groove that draws a closed loop,
Having a pull ring, which is opened by breaking and removing the stopper, has a pull-open type spout, and stands a topped cylindrical spout cylinder, and the assembled cylinder is fitted onto the bottle mouth cylinder, The seal cylinder is configured to be fitted into the opening of the bottle mouth cylinder, and the outer cap body has a structure in which a reinforcing cylinder is hung from the upper end surface of the outer cylinder via an inner flange-shaped inner flange piece. The configuration is such that the cap body is fitted between the seal cylinder and the spout cylinder.

According to the above structure of the third aspect, the sealing cylinder of the cap body improves the sealing property of the content liquid, and further, the reinforcing cylinder of the outer cap body abuts from the inside to prevent the deformation of the soft PO sealing cylinder. It is possible to reliably and stably maintain this hermeticity.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. PO is used as a material for the pouring cap of the present invention in terms of chemical stability, safety regarding foods, excellent mechanical properties, and raw material cost. Examples of soft PO include low-density polyethylene,
There are linear low density polyethylene, medium density polyethylene, and rubber component-containing polypropylene, etc., preferably those having a tensile elastic modulus of 600 MPa or less, and examples of hard PO include polypropylene, high density polyethylene, etc. Is 1000 MPa or more.

1 and 2 show an embodiment of a pouring cap according to the present invention, which is a cap body 1 made of low density polyethylene (hereinafter referred to as LDPE),
The outer cap body 10 is made of polypropylene (hereinafter referred to as PP).

FIG. 2 is a semi-longitudinal sectional view showing a state in which the spout cap of one embodiment of the present invention is assembled to the bottle mouth cylinder 20, and the cap body 1 is attached to the bottle mouth cylinder 20 with an assembly. At the upper end of the cylinder 2, a sealing cylinder 4 is hung down via an inner flange-shaped top wall 3,
At the lower end of the sheet cylinder 4, a topped cylinder-shaped spouting cylinder 6 forming a spout 9 is erected via an inner flange-shaped bottom wall 5, and the top wall of the spouting cylinder 6 is sealed. The stopper wall 8 is formed with a stopper 8 having a pull ring 8a, which is defined by a breaking groove 8b formed in a closed loop shape.

The assembling cylinder 2 which is fitted on the bottle mouth cylinder 20 is a member for overcoming and locking on the inner peripheral surface of the lower end portion thereof to the bottle mouth engaging peripheral strip 21 provided on the outer periphery of the opening portion of the bottle mouth cylinder 20. The stop protrusion 2a is provided to form a locking function portion for the bottle cap 20.

The wall thickness of the assembling cylinder 2 is set so that the strength of the assembling of the cap body 1 to the bottle mouth cylinder 20 is such that the cap body 1 can be manually removed in a tear-off manner.

The outer cap body 10 has an exterior cylinder 13 for exteriorly abutting the assembling cylinder 2 and a lid body 15 integrally connected to the upper end of the exterior cylinder 13 via a hinge portion 16.

An outer peripheral surface of the outer cylinder 13 is provided with an engaging piece peripheral strip 13a which engages with the lower end surface 2b of the assembling cylinder 2, and an inner flange-shaped inner flange piece 18 is provided at the upper end thereof. Cylindrical reinforcing tube 1
4 is provided so as to hang down, and a main body cylinder 11 whose upper end is expanded in a trumpet shape is erected.

On the lower surface of the top plate 17 of the lid body 15, there is provided a seal piece cylinder 12 which is tightly fitted in the trumpet-shaped upper end portion of the main body cylinder 11.

Next, an example of how the spout cap according to the above embodiment is attached to the bottle mouth 20 and how it is used will be described. First, with the reinforcing cylinder 14 of the outer cap body 10 fitted in the groove formed by the seal cylinder 4, the spout cylinder 6 and the bottom wall 5 of the cap body 1, the bottle mouth of the bottle filled with the content liquid. The cylinder 20 is fitted and assembled by tapping.

At the time of this stoppering, the locking projection 2a of the assembling cylinder 2 of the cap body 1 rides over and locks on the bottle locking peripheral 21 of the bottle cylinder 20, and at the same time, the exterior of the outer cap body 10 is covered. Tube 1
The locking piece peripheral strip 13a of 3 is the cylinder 2 with the assembly of the cap body 1
The lower end surface 2b of the cap is attached to the bottle cap, and the cap body 1 and the outer cap body 10 are assembled in a simple process.

Tube 2 with a set of LDPE cap body 1
The bottle cylinder 20 is fitted in the groove formed by the seal tube 4 and the top wall 3, so that the sealing performance can be reliably maintained. This deformation is suppressed by the PP outer cylinder 13 and the reinforcing cylinder 14, so that the sealing property can be stably maintained.

Further, PP has a high heat resistance. For example, even if a pouring cap is attached immediately after filling the content liquid at a relatively high temperature, thermal deformation of the LDPE cap body 1 can be prevented. Improves heat resistance.

At the start of use, first, the pulling ring 8a breaks the breaking groove 8b to open the plug removing portion 8. However, the bending deformation of the assembled cylinder 2 of the cap main body 1 in the radial direction is P.
Since it is suppressed by the P-made exterior cylinder 13, it is possible to reliably prevent a defective operation in which the spout cap comes off during the opening operation by the pull ring 8a.

Since it is made of LDPE, the breaking groove 8b can be easily broken, and the contents can be poured out from the main body tube 1.
Since the diameter of the upper end portion of No. 1 is expanded to the trumpet strip, it can be implemented satisfactorily.

Further, by closing the lid 15 with the hinge portion 16, the sealing effect of the sealing piece cylinder 12 and the upper end of the main body cylinder 11 can maintain the sealing property of the content liquid during use.

After the content liquid is consumed, at the time of separating and collecting the pouring cap, first, the outer cap body 10 is grasped by a hand, and the outer cap body 1 is removed by a forcible removal operation.
0 is removed from the cap body 1, but at this time, due to the high rigidity of PP, it is difficult to remove only by bending deformation of the outer cylinder 13 of the outer cap body 10 in the radial direction, but it is made of PP in the locked state. Cylinder 2 with locking piece peripheral strip 13a and LDPE assembly
At the abutment point of the engaging portion of the lower end surface 2b of the armature, the engaging piece peripheral strip 13a deforms the vicinity of the lower end surface 2b in a crushed shape, and a slight bending deformation in the radial direction of the outer casing causes this change. You can remove the stop.

Since the outer casing 10 is made of high-rigidity PP and is less likely to be bent and deformed in the radial direction as described above, the protrusion height h of the locking piece peripheral strip 13a of the outer casing 13 is so high. Since the locking function is exhibited without doing so, the cap body 1
It is easy to set the ridge height h so that the assembling strength of the outer cap body 10 and the outer cap body 10 can be removed by a forcible removal operation of a forcible mopping even with a relatively small force. is there.

Further, PP has an excellent dimensional accuracy of the molded product, and the height h of the ridge can be molded with high dimensional accuracy, so that the outer cap body 10 can be securely locked to the cap body 1. While being held, the manual removal of the locked state can be stably realized.

After removing the outer cap body 10, the assembling cylinder 2 is so arranged that the assembling strength of the cap body 1 with respect to the bottle mouth cylinder 20 can be easily removed by hand.
Since the wall thickness is set, the cap body 1 is
Can be easily removed from scratch.

By the above-described detaching operation, the bottle body, the cap body 1 and the outer cap body 10 can be separately collected for each material.

[0041]

Since the present invention has the above-mentioned structure, it has the following effects. In the invention according to claim 1, the cap body is made of a soft synthetic resin, the outer cap body is made of a hard synthetic resin, and the outer cap body is provided with a locking piece peripheral strip having a height in an appropriate range. We found that it is possible to remove it by applying a forcible force by hand while locking and assembling the body to the cap body, improving productivity in the process of assembling to the bottle body and assembling strength during use It is now possible to realize stable holding of the water and easy separation and recovery from the bottle with a simple structure.

According to the second aspect of the present invention, the flexibility of the soft polyolefin resin, the high rigidity of the hard polyolefin resin, the excellent dimensional accuracy of the molded product, and the high heat resistance are utilized, thereby making the sealing of the content liquid. Further, it is possible to more reliably realize the assembling strength of the pouring cap during use and the smooth detachability of the outer cap body.

According to the third aspect of the present invention, by providing the seal cylinder and the reinforcing cylinder, the sealing property of the content liquid can be more surely maintained.

[Brief description of drawings]

FIG. 1 is an overall perspective view showing a state in which an embodiment of the present invention is assembled to a bottle mouth barrel.

FIG. 2 is a semi-longitudinal sectional view showing a state in which the embodiment shown in FIG. 1 is assembled to a bottle mouth cylinder.

[Explanation of symbols]

1; Cap body 2; Assembled cylinder 2a; locking ridge 2b; bottom surface 3; Top wall 4; Seal tube 5; Bottom wall 6; dispensing cylinder 7; Sealing wall 8; Unplugging part 8a; Pull ring 8b; fracture groove 9; Spout 10; Outer cap body 11; Body tube 12; Seal piece cylinder 13; outer layer cylinder 13a; locking circumferential strip 14; Reinforcing cylinder 15; Lid 16; Hinge part 17; Top plate 18; Inner collar piece 20; Bottle bottle 21; Bottle locking perimeter

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 3E084 AA04 AA12 AA24 AB01 BA02                       CA01 CC05 DA01 DB13 DC05                       EA02 EB01 EB04 EC04 FA03                       FC05 GA06 GB06 GB17 HA05                       HB02 HC03 HD04 KB01 LA03                       LB02 LD01

Claims (3)

[Claims] 1. A locking projection that is fitted onto a bottle mouth cylinder (20) and that rides over and holds a bottle mouth retaining peripheral strip (21) provided on the outer peripheral surface of the opening of the bottle mouth barrel (20). The line (2a) has an assembling cylinder (2) that is provided around the inner peripheral surface of the lower end, and is tightly fitted to the bottle mouth cylinder (20) so as to spout (9).
A cap body (1) made of a soft synthetic resin, and a locking piece peripheral strip (13a) that locks to the lower end surface (2b) of the assembling cylinder (2) is provided on the inner peripheral surface of the lower end portion. Then, an outer cylinder (13) that comes into contact with the assembled cylinder (2) and is exteriorly provided is provided, and a top-end cylindrical lid body integrally connected to the upper end of the outer cylinder (13) via a hinge (16). (15), which is composed of an outer cap body (10) made of a hard synthetic resin for opening and closing the spout (9) by attaching an exterior assembly to the cap body (1), and the cap body (1 ), The strength of assembling to the bottle cap (20), with the outer cap body (10) removed,
The outer cylinder (13) is set so that the cap body (1) and the outer cap body (10) can be assembled by hand so that the strength of the cap body (1) and the outer cap body (10) can be removed manually. The synthetic resin pouring cap in which the protrusion height (h) of the locking piece peripheral strip (13a) is set. 2. The synthetic resin pouring cap according to claim 1, wherein the cap body (1) is made of a soft polyolefin resin, and the outer cap body (10) is made of a hard polyolefin resin. 3. A cap body (1) is provided with a seal tube (4) depending on an upper end of an assembling tube (2) via an inner collar-shaped top wall (3). From the lower end, through the inner flange-shaped bottom wall (5), on the sealing wall (7) that is the top plate, the partition wall is defined by the breaking groove (8b) that draws a closed loop, and has the pull ring (8a) Pull-open type spout that is opened by removing the rupture
(9) is provided, and a capped cylindrical spouting cylinder (6) is erected, the assembled cylinder (2) is fitted onto the bottle mouth cylinder (20), and the sealing cylinder (4) is The outer cap body (10) is fitted into the opening of the bottle mouth barrel (20), and the outer cap body (10) is reinforced on the upper end surface of the outer sleeve body (13) via the inner collar-shaped inner collar piece (18). 3. The structure according to claim 1, wherein the reinforcing cylinder (14) is fitted between the seal cylinder (4) and the spout cylinder (6) of the cap body (1). Synthetic resin pouring cap.