JP2006273417A - Lid member, liquid container using the lid member, and product containing liquid therein, using the lid member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lid member for use in sealing a container containing liquid therein, which facilitates unsealing at any time even by a person with weak force, and to provide a liquid container using the lid member and a product containing the liquid, using the lid member. <P>SOLUTION: The lid member is for use in sealing a container containing the liquid therein, and formed of: a resin cap base which is screwed and mounted onto an upper opening of the container containing the liquid therein; a disk portion which is arranged and abutted on a lower surface of an upper bottom portion forming an upper surface of the cap base; a closing member which has an annular protrusion protruding downward from the disk portion to be fitted into the upper opening of the container; and a thermoplastic elastomer which is arranged on a peripheral surface of the cap base, filled in a plurality of grooves extending in parallel with an axis of the cap base, and formed in one body with the cap base. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a lid used for a beverage container, a liquid container using the lid, and a product containing a liquid using the lid, and more specifically, a lid that can be easily opened even by a weak person. The present invention relates to a material, a liquid container using the lid material, and a product containing a liquid using the lid material.

In recent years, it has become mainstream that a plastic bottle is used as a container for containing a beverage. In order to close the upper end opening of the PET bottle, a cylindrical cover material having a bottom is used, and the cover material is screwed with an external thread formed in the upper end opening of the PET bottle, so that the PET bottle Close.
In order to prevent the contents of the PET bottle from leaking from the upper end opening while the PET bottle is transported from the beverage factory to the retail store or the like, the screw between the lid material and the upper end opening of the PET bottle is tight. Is done. In particular, when the content of the PET bottle is a carbonated beverage, this screwing becomes very hard to prevent the carbon dioxide gas from leaking.
For this reason, it often happens that a weak person such as an elderly person or a child cannot open the lid of the plastic bottle.

  In order to solve such a problem, many devices have been devised for facilitating the opening of the lid of a plastic bottle (see, for example, Patent Document 1).

JP 2004-217282 A

By using a tool for facilitating the opening and removal of the lid of the PET bottle as disclosed in Patent Document 1, the opening operation can be easily performed.
However, there are many scenes of ingesting plastic bottle drinks not only indoors but also outdoors. For example, in the home, if an opening tool is provided, the opening operation as disclosed in Patent Document 1 can be easily performed, but it is difficult to open outdoors. When it becomes necessary to open a new plastic bottle, it is necessary to carry an opening aid. Carrying an opening aid when going out is rare.
Therefore, the opening assistance tool as described above must always be carried when encountering a bottled beverage that is difficult to open.

  The present invention has been made in view of the above-described conventional circumstances, and is a lid member used for a container that contains a liquid that can be easily opened even by a weak person and the lid member. An object of the present invention is to provide a liquid container using the liquid and a product containing a liquid using the lid.

The invention according to claim 1 is a resin-made cap base material that is formed in a cylindrical shape with one end and screwed into an upper end opening of a container that contains a liquid, and an upper surface that forms the upper surface of the cap base material. A disc part disposed in contact with the bottom surface of the bottom part, a closing member that protrudes downward from the disc part and that fits inside the upper end opening of the container, and the cap base Contains a liquid comprising a thermoplastic elastomer engraved on the outer peripheral surface of the material and filled in a plurality of grooves extending in parallel to the axis of the cap base material and molded integrally with the cap base material It is a lid used for a container to be used.
The invention according to claim 2 is a resin-made cap base formed in a cylindrical shape with one end and screwed into an upper end opening of a container for containing a liquid, and an upper surface of the cap base. An annular elastomer that is integrally formed on the bottom surface of the bottom and is fitted inside the upper end opening of the container, and a plurality that is engraved on the outer peripheral surface of the cap base and extends parallel to the axis of the cap base A lid material used for a container for storing a liquid, which is made of a thermoplastic elastomer that is filled in the groove portion and is molded integrally with the cap base material.
The invention according to claim 3 is the lid material used for the container for storing the liquid according to claim 1 or 2, wherein the thermoplastic elastomer further covers an outer peripheral surface of the cap base material.
According to a fourth aspect of the present invention, in the liquid according to any one of the first to third aspects, the groove has a substantially trapezoidal cross section that becomes narrower as the outer peripheral contour of the cap base material is approached. It is a lid | cover material used for the container which accommodates.
According to a fifth aspect of the present invention, the thermoplastic elastomer covers at least a part of the upper surface of the cap base material, the cap base material includes a through-hole penetrating the upper bottom part, and the lower surface of the upper base part is provided. 3. The lid according to claim 2, wherein the annular elastomer is molded integrally with the thermoplastic elastomer on the upper surface of the cap base material by a thermoplastic elastomer disposed in the through hole.

The invention according to claim 6 is screwed and attached to a storage container formed in a cylindrical shape with one end and having an opening at the upper end, and a male screw formed in the upper end opening of the storage container. A liquid container made of a lid material, wherein the lid material is formed in a cylindrical shape with one end and is screwed into and attached to an upper end opening of the container, and the cap base A disk part disposed in contact with the lower surface of the upper bottom part forming the upper surface of the material, and an annular protrusion part that protrudes downward from the disk part and fits inside the upper end opening of the container The sealing material is made of a thermoplastic elastomer which is engraved on the outer peripheral surface of the cap base material and filled in a plurality of grooves extending in parallel to the axis of the cap base material and molded integrally with the cap base material. A liquid container characterized by the above.
The invention according to claim 7 is screwed and attached to a storage container which is formed in a cylindrical shape with one end and has an opening at the upper end, and a male screw part formed in the upper end opening of the storage container. A liquid container made of a lid material, wherein the lid material is formed into a bottomed cylindrical shape, and is made of a resin-made cap base material that is screwed onto an upper end opening of the liquid container, and the cap base An annular elastomer that is integrally formed on the lower surface of the upper bottom that forms the upper surface of the material and that is fitted inside the upper end opening of the container; and the cap base material that is engraved on the outer peripheral surface of the cap base material A liquid storage container comprising a thermoplastic elastomer that is filled in a plurality of grooves extending in parallel with the axis and molded integrally with the cap base material.
The invention according to claim 8 is the liquid container according to claim 6 or 7, wherein the thermoplastic elastomer further covers an outer peripheral surface of the cap base material.
The invention according to claim 9 is characterized in that the groove has a substantially trapezoidal cross section that becomes narrower as it approaches the outer peripheral contour of the cap base material. Containment container.
According to a tenth aspect of the present invention, the thermoplastic elastomer covers at least a part of the upper surface of the cap base material, the cap base material includes a through-hole penetrating the upper bottom portion, and the lower surface of the upper bottom portion is formed. The liquid container according to claim 7, wherein the annular elastomer is molded integrally with the thermoplastic elastomer on the upper surface of the cap base material by a thermoplastic elastomer disposed in the through hole.

The invention according to claim 11 is formed in a cylindrical shape with one end and having an opening at the upper end and containing liquid therein, and a male thread formed at the upper end opening of the receiving container. A product containing a liquid made of a lid member that is screwed onto the container, wherein the lid member is formed in a cylindrical shape with one end and is screwed into and attached to the upper end opening of the container. A cap base material, a disk portion disposed in contact with the lower surface of the upper bottom portion that forms the upper surface of the cap base material, and protruding downward from the disk portion and fitted inside the upper end opening of the container A closing member having an annular protrusion to be joined, and filled in a plurality of grooves engraved on the outer peripheral surface of the cap base material and extending parallel to the axis of the cap base material, and integrated with the cap base material Characterized by a molded thermoplastic elastomer A product containing the liquid.
The invention according to claim 12 is formed in a cylindrical shape with one end and having an opening at the upper end and containing liquid therein, and a male thread formed at the upper end opening of the receiving container. A product containing a liquid made of a lid member that is screwed onto the container, wherein the lid member is formed in a cylindrical shape with one end and is screwed into and attached to the upper end opening of the container. A cap base material, an annular elastomer that is integrally formed on the lower surface of the upper bottom portion that forms the upper surface of the cap base material, and is fitted inside the upper end opening of the containing container, and an outer peripheral surface of the cap base material A product containing a liquid comprising a thermoplastic elastomer which is engraved and filled in a plurality of grooves extending parallel to the axis of the cap base material and is molded integrally with the cap base material. .
The invention according to claim 13 is the product containing the liquid according to claim 11 or 12, wherein the thermoplastic elastomer further covers an outer peripheral surface of the cap base material.
The invention according to claim 14 is characterized in that the groove has a substantially trapezoidal cross section that becomes narrower as it approaches the outer peripheral contour of the cap base material. It is a product that contains.
According to a fifteenth aspect of the present invention, the thermoplastic elastomer covers at least a part of the upper surface of the cap base material, the cap base material includes a through-hole penetrating the upper bottom portion, and the lower surface of the upper bottom portion is formed. The product containing liquid according to claim 12, wherein the annular elastomer is molded integrally with the thermoplastic elastomer on the upper surface of the cap base material by a thermoplastic elastomer disposed in the through hole. is there.

According to the first, sixth, and eleventh aspects of the invention, the thermoplastic elastomer embedded in the groove formed in the cap base material increases the frictional force between the hand and the cover material. It is a lid that can be easily opened. In addition, since the thermoplastic elastomer is integrally incorporated in the lid, it can be used as a lid for a commercially available beverage container, and all beverage containers using the lid of the present invention can be easily opened. Become.
According to invention of Claim 2, 7 and 12, the cyclic | annular elastomer seals the opening part of a drink container, and can show high sealing force with the elastic force of an elastomer.
According to the third, eighth and thirteenth aspects of the present invention, the thermoplastic elastomer is not only embedded in the groove of the cap base material but also covers the outer peripheral surface thereof, so that the thermoplastic elastomer is prevented from falling off from the cap base material. it can. Furthermore, when the lid material collides with another object at the time of transporting the beverage container, the elastomer layer protects the lid material and the collided object, so that damage due to the collision at the time of transportation can be prevented.
In the inventions according to claims 4, 9 and 14, since the width of the groove near the cap base material axis is wide and the width of the groove near the outer peripheral contour of the cap base is narrow, the groove of the cap base is filled. The formed thermoplastic elastomer is prevented from falling off from the groove.
According to the fifth, tenth and fifteenth aspects of the present invention, since the closing material is integrally formed by the elastomer, the operation of manufacturing the closing material in a separate process and incorporating it into the beverage container can be omitted, and the manufacturing cost can be reduced. Reduction can be achieved. Furthermore, the elasticity of the elastomer can provide a high sealing property to the beverage container.

Hereinafter, the lid according to the present invention will be described with reference to the drawings.
FIG. 1 is an external view of a lid according to the first embodiment of the present invention, FIG. 1 (a) is a plan view, and FIG. 1 (b) is a side view. FIG. 2 is a longitudinal sectional view showing a state where the lid shown in FIG. 1 is assembled to a beverage container.
The lid material (1) is composed of a cap base material (2), a closing material (3), and a thermoplastic elastomer (5).

The cap substrate (2) is formed in a cylindrical shape with one end. The lower end surface of the cap base material (2) is in an open state, and the upper end surface of the cap base material (2) is formed in a disk-like upper bottom (21) and is in a closed state.
Commercially available PET bottles can be used as the beverage container (V). That is, the beverage container (V) may be any shape as long as it is formed into a bottomed cylindrical shape and has an opening at the upper end. And preferably, a threaded portion is formed in the upper end opening.
As shown in FIG. 2, a convex portion is formed on the inner peripheral surface of the cap base material (2) to be screwed with a male screw portion formed in the upper end opening of the beverage container (V).

As shown in FIG. 1, a plurality of groove portions (22) are formed over the outer peripheral surface of the cap base material (2). Each groove (22) extends parallel to the axis of the cap base (2).
In addition, in the example shown in FIG. 1, although the groove part (22) is drawn large in order to show clearly, the width | variety (about about a grid line provided in the outer peripheral surface of the lid | cover material of a commercially available PET bottle is shown. 1 mm width).
Although FIG. 1A shows a groove portion (22) having a substantially trapezoidal cross section, other cross-sectional shapes (for example, a groove portion having a V-shaped cross section or a groove portion having a rectangular cross section) can also be employed.
As a material constituting the cap base material (2), polypropylene satisfying the standards in the Food Sanitation Law is used. More preferably, it is formed from a synthetic resin material in which 5 to 15% of polypropylene is added to syndiotactic polypropylene. Thereby, the adhesiveness of the interface of a cap base material (1) and an elastomer (5) at the time of lid | cover material (1) shaping | molding can be raised.

An elastomer (5) is filled and embedded in the groove (22), and is molded integrally with the cap base (2). Since the elastomer (5) and the cap substrate (2) are integrally molded by a two-color molding method, it is considered that the elastomer (5) does not fall off from the cap substrate (2). Since the elastomer (5) is embedded in the groove (22) having a trapezoidal cross section as shown in a), it is reliably prevented that the elastomer (5) falls off the cap base material (2).
The elastomer (5) is preferably made of thermoplastic SEPS (styrene ethylene propylene styrene block copolymer) as a base polymer. This is because SEPS does not have a double bond and thus has excellent weather resistance and heat resistance, and has less odor.
Examples of this type of elastomer include ethylene-propylene rubber and rubber-like products obtained by polymerizing ethylene and propylene in the presence of a chiller catalyst.

A closing material (3) is disposed inside the cap base material (2).
The closing member (3) includes a disc portion (31) and a projecting portion (32) projecting from the lower surface of the disc portion (31).
When the lid (1) is attached to the beverage container (V), the upper surface of the disc part (31) comes into contact with the lower surface of the upper bottom part (21) of the cap base material (2). And the lower surface of a disk part (31) contact | abuts to the upper edge of the upper-end opening part of a drink container (V), and prevents the leak of the drink in a drink container (V).

  The protruding portion (32) is an annular portion that is formed integrally with the disc portion (31) and protrudes downward from the lower surface of the disc portion (31). The protrusion (32) is fitted inside the upper end opening of the beverage container (V), the outer peripheral surface of the protrusion (32) is in close contact with the inner wall surface of the upper end opening of the beverage container (V), and the beverage container Prevent leakage of liquid in (V).

  When the lid (1) configured as described above is unscrewed from the beverage container (V), the elastomer (5) that appears on the outer peripheral surface of the cap base (2) 1) Demonstrate high frictional force against the hand trying to turn. Therefore, the lid (1) can be easily removed from the beverage container (V).

FIG. 3 shows a second embodiment. FIG. 3 is a plan view of the lid member (1).
As shown in FIG. 3, you may provide an elastomer (5) so that a cap base material (2) outer peripheral surface may be covered. Thus, the effect similar to 1st Embodiment can be acquired also by covering an outer peripheral surface of a cap base material (2) with an elastomer (5).

An example of the manufacturing process of the lid material (1) is shown below. FIG. 4 is an enlarged cross-sectional view around the cavity of an injection mold apparatus (100) used for manufacturing the lid member (1) of the present invention.
The mold apparatus (100) includes a first block (110) disposed above in FIG. 4 and a second block (120) disposed below in FIG.
The first block (110) includes a pair of recesses (111, 112). Of the pair of recesses (111, 112), the recess (111) arranged on the left in FIG. 4 is a cap substrate recess (111) for forming the cap substrate (2). The arranged recess (112) is an elastomer recess (112) for integrally molding the elastomer (5) on the cap substrate (2).

As will be described later, the second block (120) can be moved up and down in FIG. In addition, the second block (120) can rotate around its axis at a position lowered downward.
The 2nd block (120) is provided with one core part (121) which protrudes in the field side which contacts the 1st block (110). When the core portion (121) enters the cap substrate recess (111), a cap substrate cavity (130) simulating the shape of the cap substrate (2) is formed. When the core portion (121) enters the elastomer recess (112), an elastomer cavity (131) that imitates the portion of the elastomer (5) molded integrally with the cap base (2) is formed. . In FIG. 4, the portion indicated by the dotted line in the elastomer recess (112) is the core portion (121) with the cap substrate (2) when the core portion (121) enters the elastomer recess (112). ) Appears.

  The mold apparatus (100) includes a pair of injection nozzles (140, 141). The nozzle (140) communicating with the cap substrate cavity (130) is the cap substrate nozzle (140), and injects a resin constituting the cap substrate (2). The nozzle (141) communicating with the other elastomer cavity (131) injects a thermoplastic elastomer.

  Using the mold apparatus (100) configured as described above, in the first step, the core part (121) is made to enter the concave part (111) for the cap base material, and a cavity (simulating the cap base material (2) ( 130). And molten resin is inject | emitted from the nozzle for cap base materials (140), a cap base material (2) is shape | molded, and it is made to cool and solidify.

FIG. 5 is a diagram illustrating the second process, and FIGS. 5A to 5C illustrate the second process in the order of steps.
After the first step, in the second step, the second block (120) is moved downward (see FIG. 5A). At this time, the cap base material (2) molded and cooled and solidified in the first step goes down together with the core portion (121).
Then, the second block (120) is rotated by 180 ° around the axis (see FIG. 5B). By this rotation, the core portion (121) reaches a position corresponding to the elastomer recess (112) of the second block (120).
Thereafter, the second block (120) is moved upward, and the core (121) is allowed to enter the elastomer recess (121). Thereby, an elastomer cavity (131) is formed by the peripheral surface of the cap substrate (2) and the wall surface of the elastomer recess (121).

In the third step, molten elastomer is injected from the elastomer nozzle (141) into the elastomer cavity (131) to form an elastomer (5) portion.
The upper portion of the elastomer cavity (131) is an annular space that communicates with the groove (22) formed over the outer peripheral surface of the cap base (2) molded in the first step. The molten elastomer penetrates into each groove (22).

FIG. 6 shows the lid member (1) obtained through the first to third steps. Fig.6 (a) is a top view of a cover material (1), FIG.6 (b) is a longitudinal cross-sectional view.
As shown in FIG. 6, an annular elastomer (5) portion is formed on the upper surface of the cap substrate (1). This is a portion corresponding to the annular space described above, but does not need to be removed in particular, and contributes as an increase in the area that causes high friction with the hand.
In addition, a sharp protrusion due to separation from the cap substrate nozzle (140) is formed on the upper surface of the cap substrate (2) formed in the first step. Since it is possible to cover with the annular elastomer (5) that covers a part of the upper surface of (5), it is possible to obtain the lid material (1) having a good touch.
In FIG. 6, the elastomer (5) is disposed so as to cover the entire outer peripheral surface. However, as shown in FIG. 1, the elastomer (5) is embedded only in the groove (22), and the cap base material (2). The resin portion and the elastomer (5) may appear alternately.
Further, an annular space is formed in the upper part of the elastomer cavity (131), and the annular elastomer (5) is molded on the upper surface of the cap base material (2). However, the present invention is not limited to this. The whole may be covered with an elastomer (5).

FIG. 7 shows a modification of the manufacturing method of the lid member (1) shown in FIG. 6, and FIGS. 7 (a) to 7 (d) show the respective steps in order.
The manufacturing method shown in FIG. 7 is substantially the same as the steps shown in FIGS. 4 and 5, but only different parts are shown below.
First, in a 1st process, the convex part which modeled a desired character and a pattern protrudes in the part which models the upper surface of the upper base part (21) of a cap base material (2) in the recessed part (111) for cap base materials. . In the example shown in FIG. 7, a convex part imitating the letter “A” projects downward from the upper surface of the concave part (111) for cap base material. And when resin is inject | emitted from the nozzle for cap base materials (140), the cap base material (2) provided with the recessed part which imitated the letter "A" on the upper surface of the upper bottom part (21) is shape | molded.

The mold apparatus (100) shown in FIG. 7 includes a nozzle (142) that communicates with a concave portion imitated with the letter “A”, and a molten elastomer is ejected from the nozzle (142). The color of the elastomer from the nozzle (142) is preferably different from the color of the resin of the cap base (2).
In the example shown in FIG. 7, the lid (1) is molded using three nozzles (140, 141, 142), but the annular space above the elastomer cavity (131) is the upper surface of the cap base (2). The nozzle (142) does not need to be prepared in particular if it communicates with a concave portion that imitates a desired character or pattern formed on the cap base material by ejecting the elastomer from the elastomer nozzle (141). (2) The entire elastomer portion on the upper surface can be formed.

FIG. 8 shows a lid (1) obtained from the manufacturing method shown in FIG. Fig.8 (a) is a top view of a cover material (1), FIG.8 (b) is a longitudinal cross-sectional view of a cover material (1).
As shown in FIG. 8, the lid member (1) includes not only the elastomer (5) on the circumferential surface of the lid member (1) but also the elastomer (5) on the upper surface of the lid member (1).
In the example shown in FIG. 8, the elastomer (5) on the upper surface of the lid (1) is imitated by the letter “A”, but it is possible to adopt a form imitating a desired character and design as appropriate. Since the elastomer (5) on the upper surface of the lid (1) has a color different from that of the cap base (2), the design imitated by the elastomer (5) appears clearly. Therefore, when the elastomer (5) on the upper surface of the lid material (1) imitates the product name of the beverage, the advertising effect of the beverage is exhibited. Further, in the past, after the lid material (1) was molded, it was printed on the lid material (1) in the printing process. However, in the present invention, this printing process is omitted and the mold molding is performed. It is possible to apply a desired design to the lid member (1) only by the process. Furthermore, since the design is composed of the elastomer (5), it is possible to construct a design that is more three-dimensional and textured than a design by conventional printing.

  FIG. 9 is an enlarged view of the periphery of the cap base material cavity (130) of the mold apparatus (100) used in a further application mode of the manufacturing method of the lid member (1). FIG. 10 shows the state around the elastomer cavity (131) when the core (121) is inserted into the elastomer recess (112) by rotating the second block about the 180 ° axis from the state of FIG. It is an enlarged view.

As shown in FIG. 9, the mold apparatus (100) used in this embodiment has a pin member (113) and a cylindrical member (122) in addition to the structure of the mold apparatus (100) used in the above manufacturing method. ). Other configurations are the same as those of the mold apparatus (100) described above.
The pin member (113) is attached to the first block (110) side, and its tip protrudes into the cap substrate recess (111). When the core portion (121) is inserted into the cap substrate recess (111), the lower end of the pin member (113) comes into contact with the upper end of the cylindrical member (122).
The tubular member (122) passes through the core portion (121), and the upper end thereof is flush with the upper end surface of the core portion (121). Moreover, as will be described later, the cylindrical member (122) is movable up and down with respect to the core part (121).
It should be noted that the outer diameter of the cylindrical member (122) is the size fitted by the inner surface of the mouth portion of the beverage container to be applied or the inner surface of the mouth portion and partly by the upper edge of the beverage container mouth portion. Compressed size.

  When the resin is injected from the cap substrate nozzle (140), the cap substrate (2) is molded. At this time, since the pin member (113) penetrates the cap base material cavity (130) and hinders the flow of the resin, the pin member (113) is placed on the upper base (21) of the cap base material (2) to be molded. A through hole corresponding to is formed. Then, after the resin of the injected cap base material (2) is cooled and solidified, the second block (120) is pushed down and rotated around the axis by 180 °. At this stage, the tubular member (122) moves downward with respect to the second block (120).

  As shown in FIG. 10, the second block (120) is then pushed up, and the core (121) enters the elastomer recess (112) to form an elastomer cavity (131). As shown in FIG. 10, at this time, since the cylindrical member (122) is moved downward with respect to the second block (120), the upper bottom portion of the cap base material (2) molded in the above-described process. (21) An annular space (133) is formed between the lower surface and the upper end of the cylindrical member (122). The annular space (133) communicates with the elastomer cavity (131) via the through hole (24) formed in the above-described process.

  When the elastomer is ejected from the elastomer nozzle (141), the melted elastomer fills the cavity (131), reaches the annular space (133) from the through hole (24), and fills the annular space (133). Thus, an annular elastomer portion is formed integrally with the lower surface of the upper bottom portion (21) of the cap base material (2).

FIG. 11 is a longitudinal sectional view of the lid (1) obtained from the manufacturing method described in FIGS. 9 and 10, and shows a state where the lid is attached to the mouth of the beverage container (V).
As shown in FIG. 11, the lower surface of the upper bottom portion (21) of the cap base material (2) and the annular elastomer (5) are integrally molded, and the annular elastomer (5) is the mouth of the beverage container (V). It is fitted to the inner surface and prevents leakage of the liquid contained in the beverage container (V). In particular, as shown in FIG. 11, when the elastomer (5) is fitted inside the beverage container (V) and partly compressed by the upper edge of the beverage container (V), this leakage occurs. The prevention effect is greatly enhanced. The elastomer (5) fitted to the inner surface of the mouth of the beverage container (V) is in close contact with the inner wall of the beverage container upper end opening due to its elastic force, and exhibits a strong sealing force.
Furthermore, according to the manufacturing method according to FIG. 9 and FIG. 10, the process of separately molding the closing material (3) and the cap base material (2) using a separate mold apparatus is performed in one process. It becomes possible. Moreover, since the cyclic | annular elastomer (5) which exhibits the sealing function with respect to the drink in the cap base material (2) and the beverage container (V) is not separated, it is integrated with the lid (1) on the beverage container. The process of mounting is simplified. That is, conventionally, a process of attaching the cap base material (2) to the beverage container after the closure material (3) is attached to the beverage container has been adopted. However, the lid material (1) obtained by this embodiment is used. The lid can be closed by simply attaching the lid (1) to the beverage container.
Moreover, since the elastomer (5) on the upper surface of the lid (1) and the annular elastomer (5) inside the lid (1) are connected, the annular elastomer (5) into the beverage container (V) is connected. Dropout is surely prevented.

  As described above, the lid member (1) of various forms has been mainly described. However, the above-described lid member is attached to a container that can store a liquid, whereby the liquid container of the present invention is obtained. If the liquid storage container stores a liquid, a product storing the liquid of the present invention is obtained. In the above example, a plastic bottle and a plastic bottle drink are illustrated as examples of the liquid container and the product containing the liquid. However, the present invention is not limited to these, and any liquid such as soy sauce, liquid medicine, liquid nutrient, etc. The liquid storage container and the product described in the claims include all of them.

  INDUSTRIAL APPLICABILITY The present invention is suitably applied to a lid used for a beverage container that facilitates the opening operation of a beverage container, a beverage container that can be easily opened, and a beverage product.

It is a figure which shows one Example of the cover material which concerns on this invention. It is a figure which shows the state which attached the lid | cover material shown in FIG. 1 to the container for drinks. It is a figure which shows the other Example of the cover material which concerns on this invention. It is a figure which shows an example of the manufacturing method of the cover material of this invention. It is a figure which shows an example of the manufacturing method of the cover material of this invention. It is a figure which shows the cover material obtained from the manufacturing method shown in FIG.4 and FIG.5. It is a figure which shows the other example of the manufacturing method of the cover material of this invention. It is a figure which shows the cover material obtained from the manufacturing method shown in FIG. It is a figure which shows the other example of the manufacturing method of the cover material of this invention. It is a figure which shows the other example of the manufacturing method of the cover material of this invention. It is sectional drawing of the cover material obtained from the manufacturing method shown in FIG.9 and FIG.10.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Lid material 2 ... Cap base material 22 ... Groove part 23 ... Recess 24 ... Through-hole 3 ... Closing material 31 ... Disc part 32 ... Projection Part 4 ... ・ Groove part 5 ... ・ Elastomer

Claims (15)

A cap base made of resin that is formed into a cylindrical shape with one end and screwed into and attached to the upper end opening of the container that contains the liquid;
A disk part disposed in contact with the lower surface of the upper bottom part that forms the upper surface of the cap base, and an annular protrusion part that protrudes downward from the disk part and fits inside the upper end opening of the container A closing material comprising:
It is made of a thermoplastic elastomer that is engraved on the outer peripheral surface of the cap base material and is filled in a plurality of grooves extending in parallel with the axis of the cap base material and is molded integrally with the cap base material. A lid used for containers that contain liquid. A cap base made of resin that is formed into a cylindrical shape with one end and screwed into and attached to the upper end opening of the container that contains the liquid;
An annular elastomer that is integrally formed on the lower surface of the upper bottom portion that forms the upper surface of the cap base material and is fitted inside the upper end opening of the container;
It is made of a thermoplastic elastomer that is engraved on the outer peripheral surface of the cap base material and is filled in a plurality of grooves extending in parallel with the axis of the cap base material and is molded integrally with the cap base material. A lid used for containers that contain liquid.   The lid material used for a container for storing a liquid according to claim 1 or 2, wherein the thermoplastic elastomer further covers an outer peripheral surface of the cap base material.   The lid used for a container for storing a liquid according to any one of claims 1 to 3, wherein the groove portion has a substantially trapezoidal cross section that becomes narrower as it approaches the outer peripheral contour of the cap base material. Wood. The thermoplastic elastomer covers at least a portion of the top surface of the cap substrate;
The cap base material includes a through-hole penetrating the upper bottom portion;
The annular elastomer on the lower surface of the upper bottom portion is molded integrally with the thermoplastic elastomer on the upper surface of the cap base material by a thermoplastic elastomer disposed in the through hole. Lid material. A storage container that is formed in a cylindrical shape with one end and an opening at the upper end;
A liquid container made of a lid member screwed and attached to a male screw formed in the upper end opening of the container,
The lid material is formed into a bottomed cylindrical shape, and is made of a resin-made cap base material that is screwed into and attached to the upper end opening of the container.
A disk part arranged in contact with the lower surface of the upper bottom part that forms the upper surface of the cap substrate, and an annular protrusion that protrudes downward from the disk part and fits inside the upper end opening of the container A closing material comprising a part;
It is made of a thermoplastic elastomer that is engraved on the outer peripheral surface of the cap base material and is filled in a plurality of grooves extending in parallel with the axis of the cap base material and is molded integrally with the cap base material. Liquid container. A storage container that is formed in a cylindrical shape with one end and an opening at the upper end;
A liquid container made of a lid member screwed and attached to a male screw formed in the upper end opening of the container,
The lid member is formed in a cylindrical shape with one end, and is made of a resin-made cap base material that is screwed into and attached to the upper end opening of the liquid storage container.
An annular elastomer that is integrally formed on the lower surface of the upper bottom portion that forms the upper surface of the cap base material and is fitted inside the upper end opening of the container;
It is made of a thermoplastic elastomer that is engraved on the outer peripheral surface of the cap base material and is filled in a plurality of grooves extending in parallel with the axis of the cap base material and is molded integrally with the cap base material. Liquid container.   The liquid container according to claim 6 or 7, wherein the thermoplastic elastomer further covers an outer peripheral surface of the cap base material.   The liquid container according to any one of claims 6 to 8, wherein the groove portion has a substantially trapezoidal cross section that becomes narrower as the outer peripheral contour of the cap base material is approached. The thermoplastic elastomer covers at least a portion of the top surface of the cap substrate;
The cap base material includes a through-hole penetrating the upper bottom portion;
8. The annular elastomer on the lower surface of the upper bottom portion is molded integrally with the thermoplastic elastomer on the upper surface of the cap base material by a thermoplastic elastomer disposed in the through hole. Liquid container. A container having a bottom-end cylindrical shape, having an opening at the top and containing a liquid therein;
A product containing a liquid made of a lid material screwed and attached to a male screw formed in the upper end opening of the container;
The lid material is formed into a bottomed cylindrical shape, and is made of a resin-made cap base material that is screwed into and attached to the upper end opening of the container.
A disk part arranged in contact with the lower surface of the upper bottom part that forms the upper surface of the cap substrate, and an annular protrusion that protrudes downward from the disk part and fits inside the upper end opening of the container A closing material comprising a part;
It is made of a thermoplastic elastomer that is engraved on the outer peripheral surface of the cap base material and is filled in a plurality of grooves extending in parallel with the axis of the cap base material and is molded integrally with the cap base material. Product containing liquid. A container having a bottom-end cylindrical shape, having an opening at the top and containing a liquid therein;
A product containing a liquid made of a lid material screwed and attached to a male screw formed in the upper end opening of the container;
The lid material is formed into a bottomed cylindrical shape, and is made of a resin-made cap base material that is screwed into and attached to the upper end opening of the container.
An annular elastomer that is integrally formed on the lower surface of the upper bottom portion that forms the upper surface of the cap base material and is fitted inside the upper end opening of the container;
It is made of a thermoplastic elastomer that is engraved on the outer peripheral surface of the cap base material and is filled in a plurality of grooves extending in parallel with the axis of the cap base material and is molded integrally with the cap base material. Product containing liquid.   The product containing a liquid according to claim 11 or 12, wherein the thermoplastic elastomer further covers an outer peripheral surface of the cap base material.   The product containing a liquid according to any one of claims 11 to 13, wherein the groove portion has a substantially trapezoidal cross section that becomes narrower as the outer peripheral contour of the cap base material is approached. The thermoplastic elastomer covers at least a portion of the top surface of the cap substrate;
The cap base material includes a through-hole penetrating the upper bottom portion;
13. The annular elastomer on the lower surface of the upper bottom portion is molded integrally with the thermoplastic elastomer on the upper surface of the cap base material by a thermoplastic elastomer disposed in the through hole. Product containing liquid.

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