JP2001114325A - Plastic cap excellent in sorting disposal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plastic cap excellent in sorting disposal, capable of being easily separated from a container main body according to recent requirements for sorting disposal of a cap and a container in releation to the recycling of resources and refuse disposal, and further capable of minimizing alteration in facilities in terms of a plant investment. SOLUTION: A plastic cap comprises a cap main body 3 to be fitted to a nozzle part 2 of a container main body 1, and an upper lid 4 provided on the cap main body 3 in an openable manner. In this plastic cap, a longitudinal thin-wall part 16 is provided from a circumferential wall 10 toward a skirt part 12, and a circumferential weakened part 20 is formed at an inside lower end top plate part of the circumferential wall 10 in such a manner as to continue from the longitudinal thin-wall part 16 in a circumferential direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used by plugging a nozzle portion of a container body containing contents such as liquid seasonings such as soy sauce and sauces and beverages, and a nozzle portion of the container body at the time of sorting and disposal. More specifically, the present invention relates to a plastic cap which can be easily separated from a container and which is excellent in sorting and disposal. The cap body has a top plate portion forming an opening for pouring out contents, a pouring cylinder rising upward on the top plate portion, and a peripheral wall portion for fitting the upper lid. And a plastic cap fitted to the container body by a skirt portion extending downward from a peripheral edge of the top plate portion.

[0002]

2. Description of the Related Art Conventionally, such plastic caps are widely used for container bodies containing contents such as liquid seasonings and beverages, and most of them are formed of a different material from the container body. The cap is usually plugged into the nozzle of the container body and fitted and fixed in a watertight manner, so that the cap is not easily detached from the container in order to maintain a reliable sealed state.

[0003]

However, recently, it is required to separate and dispose of the container and the cap in terms of resource recycling and waste disposal, and if the container body and the plastic cap cannot be easily separated from each other. In addition, the present invention also provides a plastic cap excellent in separation and disposal that can minimize the change of the equipment from the viewpoint of capital investment.

[0004]

According to the present invention, a cap body 3 fitted to a nozzle 2 of a container body 1 and an upper lid 4 provided on the cap body 3 so as to be openable and closable are provided. The cap body 3 is formed with a top plate 8 forming an opening through which contents are poured out, a pouring cylinder 9 rising up to the top plate 8, and the upper lid 4 fitted therein. Plastic cap which is fitted and fixed to the container body 1 by a skirt portion 12 extending downward from a peripheral edge of the top plate portion 8 in a vertical direction from the peripheral wall portion 10 to the skirt portion 12. A portion 16 is provided, and the inner lower end top plate portion of the peripheral wall portion 10 includes:
By forming the circumferential weakening portion 20 continuously from the vertical thin portion 16 in the circumferential direction, the cap can be easily separated from the container body, and the structure of the conventional plastic cap is hardly changed. There is no need to change the built-in machine or the tapping machine, and no new capital investment is required.

The vertical thin portion 16 and the circumferential weakening portion 20
Are made continuous through the tearing hole 19 to facilitate tearing.

The vertical thin portion 16 and the circumferential weakening portion 20
A thin portion 27 for tearing is provided on the top plate portion of the connection portion between the first and second portions to facilitate tearing and prevent water from entering the cap.

The vertical thin portion 16 has a score 17 on the inner side and a concave groove 18 on the outer side, so that the vertical thin portion 16 can be distinguished from conventional products at a glance.

Further, a cutting knob 21 connected to the vertical thin portion 16 is provided at the upper end of the peripheral wall portion 10, so that the cap body can be easily cut from the container body. I do.

The present invention is characterized in that a cutout knob 21 is provided at the upper end of the peripheral wall 10 adjacent to the cutout knob 21 in the circumferential direction, so that the cutout knob 21 can be easily picked.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a plastic cap excellent in sorting and disposal according to the present invention will be described below with reference to the accompanying drawings.

In FIGS. 1 to 5, reference numeral 1 denotes a container body made of a synthetic resin bottle such as PET or a glass bottle.
A cap body 3 made of a synthetic resin such as polyethylene or polypropylene is fitted and fixed to the nozzle body 2 of the container body 1 by stoppering, and an upper lid 4 is engaged and held by the cap body 3. I have.

The cap body 3 has a top plate portion 8 forming an opening 7 surrounded by a score 6 formed by being torn by the pull ring 5 in order to pour out the contents. A rising pouring cylinder 9 and a peripheral wall portion 10 are formed on the outside thereof, and an outer lid 4 is formed on the outer peripheral surface of the peripheral wall portion 10.
Is formed.

A skirt portion 12 extending downward from the peripheral edge of the top plate portion 8, an undercut portion 13 is formed inside the lower end thereof, and an inner ring 14 is formed on the inner surface side of the top plate portion 8. Nozzle part 2 of container body 1
Is inserted into the space between the skirt portion 12 and the inner ring 14 by plugging, and the nozzle portion 2 of the container body 1 is
The cap body 3 is firmly fitted and fixed to the container body 1 and hermetically sealed by the inner ring 14 at the same time. .

Further, a vertical thin portion 16 is provided from the peripheral wall portion 10 to the top plate portion 8 and the skirt portion 12.
The inner side is formed as a score 17 and the outer side is formed as a wide groove 18. In addition, the concave groove 18 leaves a part of the lower end of the skirt portion 12 to prevent the score from being cut by an impact at the time of plugging. Although the vertical thin portion 16 can be scored only on the inner side, forming a concave groove on the outer side has a preferable structure in that it can be easily distinguished from a conventional product. I can say

The lower end top plate portion 8 of the peripheral wall portion 10 has a hole 19 for tearing in the circumferential direction from the thin portion 16 in the vertical direction.
A circumferential weakening portion 20 based on a score or the like is formed substantially in a semi-circumferential portion following the tearing hole 19, and a cutting knob 21 connected to the vertical thin portion 16 is provided at the upper end of the peripheral wall portion 10. ing. Note that the tearing hole 19 may be replaced with a tearing thin portion 27 having a thickness of 0.05 to 0.3 mm instead of the hole.

The circumferentially weakened portion 20 can be formed on the entire circumference, but can be formed on a substantially half circumferential portion as in the present embodiment, and can be formed by about 50% of the wall thickness (about 0.5 to 0.5%).
0.6 mm) is preferable in consideration of stoppering or separation from the container main body, and a plurality of portions are formed between the pouring cylinder 9 and the peripheral wall portion 10 where the circumferential weakening portion 20 is not formed. The formation of the ribs 22 also facilitates the separation from the container body, and the peripheral wall portion 10 when the upper lid 4 is engaged.
Also serves as a reinforcing role to prevent deformation of

In this embodiment, the top plate 8 is
Although the outside of the dispensing cylinder 9 is tapered, it is also possible to form a flat shape up to the skirt portion 12.

The upper lid 4 is provided with a screw 24 on its inner side wall 23 to be screwed with the screw 11 formed on the outer peripheral surface of the peripheral wall portion 10 of the cap body 3. 26 is formed so as to hermetically seal the inside of the pouring cylinder 9 of the cap body 1.

Further, as shown in FIG. 10, a lightening portion 28 is provided at the upper end of the peripheral wall portion 10 adjacent to the knob 21 for cutting, and the height of the peripheral wall adjacent to the knob 21 is reduced so that a finger can be easily inserted. However, it is also possible to make it easy to pick the knob 21 for cutting. In FIG. 10, the lightening portion 28 is provided at a portion adjacent to the cutting knob 21 with the vertically thin portion interposed therebetween, but may be provided at an adjacent portion on the opposite side or on both sides.

Although the structure of the upper cover 4 and the cap body 3 is a fitting structure using threads, it goes without saying that the upper cover can be a hinge cover.

The plastic cap of the present invention, which is excellent in separation and disposal, of the present invention has the upper lid 4 incorporated into the cap body 3 by a conventional cap assembling machine, which is also manufactured by a conventional tapping machine. By pressing the peripheral portion of the upper lid 4 from above, it is fitted and fixed to the nozzle portion 2 of the container body 1. At this time, since the concave groove 18 is formed on the outer side of the skirt portion 12 of the cap body 3, it can be clearly distinguished from the conventional product, and the conventional product can be prevented from being mixed by mistake.

In use, as in the case of conventional products, the upper cover 4
Is removed, the pull ring 5 is pulled, the score 6 is broken, and the opening 7 is formed, so that the contents can be poured out. After use, the upper lid 4 is engaged, whereby the upper lid inner ring 26 and the pouring cylinder 9 are sealed and the airtightness is maintained.

In the case of the used one, the container body and the cap body must be separated and discarded. Here, the operation until the cap main body is separated from the container main body will be described with reference to FIGS.

First, the upper lid 4 is removed, and the knob 21 for cutting off the cap body is pulled outward, so that the vertical thin portion 16 formed on the peripheral wall portion 10, the top plate portion 8, and the skirt portion 12 follows the score 17. The engagement between the annular projection 15 of the nozzle portion 2 of the container body 1 corresponding to the cut-out hole 19 and the undercut portion 13 formed on the skirt portion 12 of the cap body 3 is released. Then, holding the cutting knob 21 or the end of the cut peripheral wall, pulling in the circumferential direction to cut all the circumferential weakened portions 20, and then pulling the same upward, the nozzle portion of the container body 1 is pulled up. Cap body 3 more completely than 2
Can be separated, separated and discarded.

[0025]

As described above, the plastic cap of the present invention, which is excellent in separation and disposal, has a separation and disposal function without changing the structure of the conventional product so much. It can be manufactured without inferiority, and even if a weak mechanism is provided in a part of the cap, it can be assembled and stoppered as before, and can be easily separated from the container main body even at the time of separation and disposal. Further, by forming a concave groove in the skirt portion, there is an effect that it is easy to distinguish the conventional product from the conventional product from the appearance.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a plastic cap excellent in separation and disposal according to the present invention.

FIG. 2 is a front view of a cap body.

FIG. 3 is a plan view of a cap body.

FIG. 4 is a bottom view of the cap body.

FIG. 5 is a front view in which an upper lid is incorporated in a cap body.

FIG. 6 is an explanatory view of a separating operation of the cap body.

FIG. 7 is an explanatory view of a separating operation of the cap body.

FIG. 8 is an explanatory diagram of an operation of separating the cap body.

FIG. 9 is an explanatory view of an operation of separating the cap body.

FIG. 10 is a front view of a cap body according to another embodiment.

[Explanation of symbols]

 1 Container body. 2 Nozzle part. 3 Cap body. 4 Top lid. 8 Top plate. 9 Discharge cylinder. 10 Perimeter wall. 12 Skirt part. 16 Thin section in vertical direction. 17 score. 18 Groove. 19 Tear holes. 20 Circumferential weakening. 21 Cutting knob. 27 Thin part for tearing. 28 Lightening part.

Claims (6)

[Claims] 1. A cap body 3 fitted to a nozzle portion 2 of a container body 1 and an upper lid 4 provided on the cap body 3 so as to be openable and closable, and the cap body 3 discharges contents. Plate portion 8 which forms an opening for receiving the water, an upper portion of the top plate portion 8 is provided with a pouring cylinder 9 and a peripheral wall portion 10 for engaging and holding the upper lid 4, and a peripheral edge of the top plate portion 8 is provided. Container body 1 by a skirt portion 12 extending downward from the
In the plastic cap fitted and fixed to
A vertical thin portion 16 is provided from the peripheral wall portion 10 to the skirt portion 12, and a circumferential weakening portion 20 is continuously provided in a circumferential direction from the vertical thin portion 16 on the inner lower end top plate portion of the peripheral wall portion 10. A plastic cap with excellent separability, characterized by being formed. 2. The longitudinal thin portion 16 and the circumferential weakening portion 20.
2. The plastic cap according to claim 1, wherein the plastic cap is continuous via the tear hole 19. 3. The longitudinal thin portion 16 and the circumferential weakening portion 20.
2. A plastic cap having excellent segregation and disposal properties according to claim 1, wherein a thin-walled portion 27 for tearing is provided on a top plate portion of a connection portion with the plastic cap. 4. The longitudinal thin portion 16 has a score 17 on the inner side.
The plastic cap having excellent segregation and disposal properties according to claim 1, 2 or 3, wherein the outside is formed as a concave groove 18. 5. A sorting and disposing property according to claim 1, wherein a cutting knob connected to the vertical thin portion is provided at an upper end portion of the peripheral wall portion. Excellent plastic cap. 6. The plastic cap according to claim 5, wherein a lightening portion is provided at an upper end of the peripheral wall portion adjacent to the cutting knob in a circumferential direction.