JP4154892B2 - Easy-to-separate collection stoppered plastic cap - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an easy-separation recovery plug type plastic cap that separates the top plate and the peripheral wall of the cap body by using a separation knob when separating and collecting after use. The present invention relates to an easy-to-separate collection stoppered plastic cap with improved leakage.
[0002]
[Prior art]
Conventionally, plastic bottles filled with liquid contents have a lid that is hinged to the cap body with a hinge to ensure safety during distribution and ease of use. The easy-to-separate collection stopper type plastic cap that breaks and opens the annular thin line of weakness of the sealing plate, and separates the cap from the bottle by breaking the top plate and peripheral wall of the cap body with a separation knob when separating and collecting after use. It was used.
[0003]
[Problems to be solved by the invention]
However, the above-described conventional easy-to-separate collection stoppering type plastic cap (10) shown in FIG. 4 is attached to a plastic bottle filled with a liquid content, for example, a mouth and neck portion (21) of a PET bottle, The mouth of the neck (21) of the mouth (21) of the bottle (20) when exposed to a high temperature of 40 ° C for a long time (3 days or longer) or when the contents are filled at a high temperature of 75 ° C or higher and allowed to cool naturally. The inner diameter of the cap main body (100) is reduced in fitting size with the inner sealing ring (113) of the cap body (100), and the contents may leak when external pressure is applied to the bottle.
[0004]
The present invention solves the above-mentioned problems of the conventional easy-to-separate recovery plug-type plastic cap, even if it is exposed to a high temperature state of 40 ° C. for a long time or the content is filled at a high temperature of 75 ° C. or higher. The present invention provides an easy-separation recovery plug-type plastic cap that does not cause liquid leakage due to external pressure.
[0005]
[Means for Solving the Problems]
That is, the first invention of the present invention is a sealing plate in which the lid portion is connected to the outer peripheral surface on one side of the cap body via a hinge, and when used, the inside of the extraction cylinder of the cap body is sealed by a pull ring. In the stopper-type plastic cap, in which the top plate and the peripheral wall of the cap body are broken and separated by a separation knob when separating and collecting the bottle neck and neck portion of the bottle provided on the lower surface of the top plate of the cap body An occlusion provided on the outer periphery of the contact sealing ring in close contact with the upper surface of the bottle is provided on the inner peripheral surface of the lower end of the peripheral wall of the cap body with a presser ring that presses the inner peripheral surface of the lower end portion on the outer peripheral surface of the upper end of the bottle neck. By providing an inclined surface that presses the upper inner peripheral surface on the upper peripheral surface of the bite ring on the outer peripheral surface of the bottle neck and neck on the inner peripheral surface above the ring, the thin brittle line is damaged by the external pressure. To do Is readily separate collection capping type plastic cap, characterized in that Ri leakage does not occur.
[0008]
Next, the second invention of the present invention is that the inner diameter of the inner peripheral surface of the lower end portion of the press ring of the cap main body pressed against the outer peripheral surface of the upper end of the bottle neck of the bottle is set to the inner periphery of the lower end portion of the presser ring of the cap main body. The outer diameter of the upper end outer peripheral surface of the bottle neck that is pressed against the surface is increased by 0.1 to 0.4 mm, and the height of the press ring of the cap body is set to the contact sealing ring of the cap body than the height of the first easy-separate collection capping type plastic cap placing serial to the invention is characterized in that higher than 0.2 mm.
[0009]
Next, a third aspect of the present invention is directed to an inner diameter of the inclined surface of the inner peripheral surface of the cap body that is in pressure contact with the outer peripheral surface of the upper end portion of the occlusal ring provided on the outer peripheral surface of the bottle neck. 1st invention characterized by making it 0.1-0.4mm smaller than the outer diameter of the upper end part outer peripheral surface of the occlusal ring of the mouth-neck part of the said bottle which press-contacts with the inclined surface of the internal peripheral surface of a main body, or is readily separate collection capping type plastic cap according according to the second aspect of the present invention.
[0010]
According to a fourth aspect of the present invention, the thickness of the thin fragile wire that is broken by the separation knob when separating and recovering the cap body at the outer peripheral edge of the top plate is set to 0.4 to 0.5 mm, and the thin wall 4. The easily separable and stoppered plastic cap according to any one of the first to third inventions, wherein the angle at which the line of weakness is provided is approximately 240 °.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
As shown in FIG. 1, the easily separable collection stopper plug type plastic cap (10) of the embodiment of the present invention has a lid portion (200) on one outer peripheral surface of the peripheral wall (110) of the cap body (100). The cap is connected via a hinge (not shown), and the lid portion is an occlusal tube (130) provided on the inner peripheral surface of the lower end portion of the peripheral wall (220) on the top plate (110) of the cap body. And an open / close knob (222) projectingly on the outer peripheral surface of the lower end of the peripheral wall opposite to the hinge connected to the cap main body. ) Is an occlusal ring that engages and engages with the occlusal ring (22) provided on the outer peripheral surface of the mouth and neck (21) of the bottle (20) on the inner peripheral surface of the lower end of the peripheral wall (120). 121), and the upper end inner peripheral surface of the peripheral wall has an occlusal phosphorus The occlusal cylinder (130) which is engaged with and fitted with (221) is erected on the upper surface, the pouring cylinder (140) and the provided top plate are connected to the inner side, and the inner lower end of the pouring cylinder is sealed. A plate (150) is provided and sealed, and an annular thin fragile line (152) of an arbitrary shape is formed by providing a cut (151) from the opposing surface at a predetermined opening position of the sealing plate. A column (not shown) having an annular pull ring (154) at the tip is usually erected on one side of the upper surface near the inner side of the wire, and the top surface of the mouth and neck of the bottle is usually disposed on the lower surface of the top plate. A contact sealing ring (112) for sealing the bottle in close contact with the inner sealing ring (113) for sealing the container in close contact with the inner peripheral surface of the container neck. Further, as shown in FIG. 3, the cap main body (100) is provided with a separation knob (160) protruding from the outer peripheral surface of the upper end portion of the peripheral wall (120), and from the position a of the root portion of the separation knob on the peripheral wall. A thin fragile line (not shown) that slopes to the lower end is formed on the outer peripheral surface side, and the top plate (110) extends from the a position of the root of the sorting knob to the b position in parallel with the peripheral wall (120). It is a cap which forms a thin weak line (114) in the upper surface side of the outer periphery part. And when using, open the lid with the opening and closing knob, pull the pull ring accommodated in the dispensing cylinder upward with your fingers, and break the annular thin line of weakness of the sealing plate that seals the inside of the dispensing cylinder When separating and collecting the cap from the mouth and neck of the bottle for disposal after use, pull the separation knob provided on the outer peripheral surface of the upper end of the peripheral wall to the outside along the peripheral wall, The cap is removed from the bottle neck of the bottle by breaking the thin line of weakness provided on the peripheral wall and the thin line of weakness provided on the outer peripheral edge of the top plate. The cap of the present invention is manufactured by an injection molding method using a thermoplastic resin such as polyethylene.
[0014]
The easy separation and collection capping type plastic cap of one embodiment of the present invention (10), as shown in FIGS. 1 and 2, the top plate of the cap body (100) (110) contacts the sealing provided on the lower surface On the outside of the ring (112), a presser ring (111) that presses the inner peripheral surface of the lower end portion is provided on the outer peripheral surface of the upper end of the mouth and neck portion (21) of the bottle (20), and within the lower end of the peripheral wall (120) of the cap body An inclined surface that presses the upper inner peripheral surface against the outer peripheral surface of the upper end of the occlusal ring (22) provided on the outer peripheral surface of the mouth-neck portion of the bottle on the inner peripheral surface above the occlusal ring (121) provided on the peripheral surface (122) is provided.
[0015]
Note that the inner diameter of the inclined surface of the inner peripheral surface of the cap body that presses against the outer peripheral surface of the upper end portion of the occlusal ring provided on the outer peripheral surface of the bottle neck of the bottle is the bottle that presses the inclined surface of the inner peripheral surface of the cap body. The outer diameter of the upper end portion outer peripheral surface of the occlusal ring of the mouth and neck is made smaller by 0.1 to 0.4 mm. If it is smaller than 0.1 mm, the pressure contact force is small and liquid leakage is liable to occur, and if it is larger than 0.4 mm, the pressure contact force becomes excessive, which may cause breakage or plugging failure. Further, the height of the press ring of the cap body is set to be 0.2 mm or more higher than the height of the contact sealing ring of the cap body. If it is 0.2 mm or less, the pressing force of the presser ring is insufficient.
[0016]
Moreover, the thickness of the thin weak line broken by the separation knob when sorting and collecting provided on the outer peripheral edge of the top plate of the cap body is set to 0.4 to 0.5 mm, and the angle at which the thin weak line is provided (FIG. 3). (From a position to b position) shown in FIG. When the thickness is less than 0.4 mm, when the mouth inner diameter of the bottle neck of the bottle becomes large due to heat, it may extend due to lack of rigidity, and when it is thicker than 0.5 mm, when sorting and collecting The thin fragile wire is less likely to break. Further, as the angle becomes smaller than 240 °, it becomes difficult to remove the cap from the bottle, and as the angle becomes larger than 240 °, the rigidity becomes insufficient.
[0017]
The easily separable and stoppered plastic cap according to the embodiment of the present invention described above includes a press ring that presses the inner peripheral surface of the lower end against the upper peripheral surface of the bottle neck of the bottle, and the outer peripheral surface of the bottle neck of the bottle. An inclined surface that presses the upper inner peripheral surface against the outer peripheral surface of the upper end portion of the occlusal ring provided on the upper side, or both the presser ring and the inclined surface are provided, and for separate collection provided on the outer peripheral edge of the top plate of the cap body Because the thickness and angle of the thin-walled fragile wire are regulated, even if they are used in plastic bottles that are naturally filled with their contents and allowed to cool naturally, they are also exposed to high temperature conditions of 40 ° C for a long time during the distribution process. However, the contents do not leak from the cap due to the pressurization of the bottle.
[0018]
【The invention's effect】
The easy-to-separate collection and stopper-type plastic cap of the present invention is attached to the cap body so that the lid part can be opened and closed. It can be easily removed from the neck and neck of the plastic bottle, and the effect of the holding ring provided on the bottom surface of the top plate of the cap body and the inclined surface provided on the inner peripheral surface of the peripheral wall is 40 ° C during distribution and storage. Even if it is exposed to a high temperature state for a long time or the contents are filled at a high temperature of 75 ° C. or higher, the cap does not cause liquid leakage due to pressurization of the bottle.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a cross-sectional view when an easily separable and stoppered plastic cap according to an embodiment of the present invention is attached to the mouth and neck of a plastic bottle.
2 is an enlarged cross-sectional view showing a main part of a cap main body of the easy-separation recovery plug-type plastic cap of FIG. 1;
3 is an explanatory view showing a structure of a cap body of the easy-separation recovery plug-type plastic cap of FIG. 1. FIG.
FIG. 4 is a cross-sectional view of an example of a conventional easy-to-separate collection stopper plug type plastic cap that is attached to the mouth and neck of a plastic bottle.
[Explanation of symbols]
10 …… Plastic cap 20 …… Plastic bottle 21 …… Mouth and neck part 22,121,131,221 …… Occlusal ring 100 …… Cap body 110,210 …… Top plate 111 …… Presser ring 112 …… Contact seal Rings 113, 211 ... Inner sealing rings 114, 123, 152 ... Thin fragile wire 120, 220 ... Peripheral wall 122 ... Pressing inclined surface 130 ... Occlusion tube 140 ... Dispensing tube 150 ... Sealing plate 151 ... ... cut 154 ... pull ring 160 ... separation knob 200 ... lid 222 ... opening / closing knob

Claims (4)

When the lid is connected to the outer peripheral surface of one side of the cap body via a hinge and used, a sealing plate that seals the inside of the dispensing cylinder of the cap body is opened by a pull ring, and separation is performed when separating and collecting. In a stoppered plastic cap that breaks and separates the top plate and the peripheral wall of the cap body with a knob for the outer side of the contact sealing ring that is in close contact with the upper surface of the mouth and neck of the bottle provided on the lower surface of the top plate of the cap body In addition, a presser ring that presses the inner peripheral surface of the lower end portion is provided on the outer peripheral surface of the upper end of the bottle neck of the bottle , and the inner peripheral surface above the occlusal ring provided on the lower end inner peripheral surface of the peripheral wall of the cap body, characterized in that the upper end portion outer peripheral surface of the occlusal ring provided on the outer peripheral surface of the mouth-and-neck portion by providing the inclined surface for pressing the upper inner peripheral surface, liquid leakage due thin line of weakness is damaged does not occur by external pressure Easy sorting and collection capping formula plastic cap. The inner diameter of the inner peripheral surface of the lower end of the retaining ring of the cap body that is in pressure contact with the outer peripheral surface of the upper end of the mouth and neck of the bottle is the upper end of the mouth and neck of the bottle that is in pressure contact with the inner peripheral surface of the lower end of the retaining ring of the cap body. The outer diameter of the outer peripheral surface is increased by 0.1 to 0.4 mm, and the height of the press ring of the cap body is set to be 0.2 mm or more higher than the height of the contact sealing ring of the cap body. claim 1 Symbol placement easy separation and collection capping type plastic cap is characterized. The inner diameter of the inclined surface of the inner peripheral surface of the cap body that presses against the outer peripheral surface of the upper end portion of the occlusal ring provided on the outer peripheral surface of the mouth and neck of the bottle is pressed against the inclined surface of the inner peripheral surface of the cap body. claim 1 or claim 2 easily separate collection capping type plastic cap according is characterized in that as small as 0.1~0.4mm than the outer diameter of the upper end portion outer peripheral surface of the occlusal ring neck of the bottle . The thickness of the thin fragile wire that is broken by the separation knob when separating and collecting the cap body at the outer peripheral edge of the top plate is set to 0.4 to 0.5 mm, and the angle at which the thin fragile wire is provided is approximately 240 °. The easily-separated recovery plug-type plastic cap according to any one of claims 1 to 3 .

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