WO2021012324A1

WO2021012324A1 - Easy-open lid having side pull ring and packaging container

Info

Publication number: WO2021012324A1
Application number: PCT/CN2019/100283
Authority: WO
Inventors: 钟定中
Original assignee: 佛山市定中机械有限公司
Priority date: 2019-07-23
Filing date: 2019-08-13
Publication date: 2021-01-28
Also published as: CN110451055A

Abstract

An easy-open lid having a side pull ring, comprising a cylindrical lid body (1). The lid body (1) comprises a tongue protrusion (13); a pull ring (2) is fixed on the tongue protrusion (13); lid opening scribed lines (3) are provided on the lid body (1); junction points (16) are provided between the tongue protrusion (13) and a side wall; each lid opening scribed line (3) comprises a starting end (30); a space section (4) is provided between the starting end (30) and the junction point (16); the lid opening scribed line (3) comprises a side wall ascending section, a top wall section (32), and a side wall descending section; the side wall ascending section extends upwards from the starting end (30); the side wall descending section is located on the side wall (12) and extends downwards; the side wall descending section comprises a tail end, and the tail end is away from the bottom of the side wall (12). By means of the lid opening scribed lines (3) provided on the lid body (1), it can be more convenient to open a lid, the lid body does not crack during stretching and forming, and lid pressing and sealing, and after the lid is opened, the whole lid body is connected into a whole, and thus can be integrally recycled, thereby facilitating resource reutilization.

Description

Side pull ring easy to open lid and packaging container To

Technical field

The invention relates to the technical field of containers used for storage or transportation of objects or materials, in particular to the field of packaging for beverages such as beer and functional drinks.

Background technique

Nowadays, the liquor and beverage industry is developing rapidly, and bottled beer and beverages occupy a huge market share. Therefore, the metal caps of bottled beer and beverages are consumed hugely every year. Most of the traditional beer caps and beverage caps use "crown caps."

However, when the "crown cap" is currently in use, because it is necessary to ensure the sealing reliability of the packaging bottle cap, the bottle cap is generally tightly pressed, so a bottle opener is needed to open the bottle cap. For outdoor or other occasions where a bottle opener is not specially prepared, it is very laborious and unsafe to open the bottle.

Although there is a bottle cap structure with a pull ring in the prior art, the opening convenience of the bottle cap is improved to a certain extent. However, it has been found in practice that the existing bottle caps with pull-tabs are not only difficult to control the opening force, but also because of the unreasonable structure of the sealing gasket in the bottle cap, the use experience of the bottle cap is affected.

Summary of the invention

The technical problem to be solved by the present invention is to provide a lid structure that is more portable and reliable when opening the lid.

The solution to the technical problem of the present invention is: the side pull ring easy-opening cover includes a cylindrical cover body, the cover body includes a top wall and a side wall, and one side of the side wall is arranged to extend diagonally outward The tongue projection, the tongue projection is fixed with a pull ring, the cover body is provided with an opening score line, the tongue projection and the side wall include a junction point, the opening score line includes the starting end, so A blank section is provided between the starting end and the junction point, the length of the blank section is 0.3~0.5mm, the opening engraving line includes a side wall section and a top wall section, and the side wall section is set on the side The wall is close to the tongue convex side and extends upward from the starting end; the top wall section is located on the top wall.

The beneficial effects of the present invention are: the present invention can make the opening of the cover more convenient by setting the opening score line on the cover body, and at the same time, there is a blank section between the starting end of the opening score line and the tongue protrusion. Therefore, it is ensured that the cover body does not split during the stretch forming and the gland sealing.

The top wall and the side wall arc transition, the top wall section includes an end, and the end is located within the arc transition line of the top wall. The reason for leaving a distance between the end of the opening engraved line and the top wall is that after opening the lid, the entire lid body is still connected as a whole, which can be recycled as a whole, which is convenient for resource reuse.

As a further improvement of the above technical solution, the cover body is provided with a triangular opening, the opening is located at the junction of the tongue and the side wall, and the junction is one of the sharp corners of the opening. A triangular opening is provided in the cap body, which can make the opening of the bottle cap more convenient.

As a further improvement of the above technical solution, the cover body is made of aluminum alloy sheet, tinplate sheet or stainless steel sheet, the top wall is a circular flat surface, the side wall is a ring shape, the top wall and the side Arc transition between walls.

As a further improvement of the above technical solution, the depth of the scribe line of the side wall section gradually deepens from bottom to top, and the depth of the scribe line of the top wall section is the same as the maximum value of the scale depth of the side wall section. This structure is adopted, both It can further avoid accidental opening of the bottle cap, and can ensure smoother opening. Of course, the depth of the opening engraving line can also be the same from beginning to end, that is, the depth of the side wall section is the same as the depth of the top wall section, which facilitates processing.

As a further improvement of the above technical solution, the tongue is located on the front side of the side wall, there are two opening engraving lines, and the two opening engraving lines are mirror-symmetrical, and the top wall of the two opening engraving lines The distance between the segments on the front side is smaller than the distance between the top wall segments of the two opening score lines on the back side. The two engraved lines for opening the lid gradually expand from the front to the back on the top wall section, which can make the opening of the lid more smooth.

As a further improvement of the above technical solution, the opening engraving line is arranged inside the lid body. Setting the opening score line on the inner side of the cap body can not only make the cap more beautiful, but the opening score line set on the inner side can prevent the bottle cap from opening along the way during the molding process, especially when the cap body is stretched. The marking line of the cap cracked, causing the cap to be scrapped.

Of course, the scoring line for opening the lid can also be arranged on the outside of the lid body.

As a further improvement of the above technical solution, a fixing hole is provided on the tongue, the pull ring is a high-strength plastic member or the pull ring is a metal member, the pull ring includes a root, and the root is fixed to the tongue. The hole is fixedly connected. By providing the fixing holes, the reliable connection between the pull ring and the tongue projection can be increased, thereby improving the connection strength of the pull ring and the tongue projection, and avoiding the phenomenon that the pull ring is separated from the cover body before the bottle cap is opened when the bottle cap is opened.

In addition to being made separately, the pull ring and the cover body can also be integrally processed and formed. The integrally processed pull ring and the cover body have a higher connection strength.

As a further improvement of the above technical solution, it further includes a sealing gasket, the sealing gasket is a self-adhesive thermoplastic elastic material, and the sealing gasket is fixed on the inner side of the cover body. The sealing gasket is made of self-adhesive thermoplastic elastic material. With self-adhesive thermoplastic elastic material, the sealing gasket can be directly adhered to the inner surface of the bottle cap, so that the use of adhesives and release agents is eliminated in the bottle cap , More environmentally friendly, and more convenient processing. At the same time, it ensures that the additional resistance when opening the lid is smaller, and overcomes the defects of difficulty in opening the lid, easy scratches, hard to tear, and incomplete tearing.

As a further improvement of the above technical solution, the sealing gasket includes a sealing ring and a base layer, the sealing ring is ring-shaped, the base layer is located in the middle of the sealing ring, and the sealing ring includes a groove with a downward opening. The sealing ring plays the role of sealing the opening of the external container, and the base layer mainly plays the role of connection.

As a further improvement of the above technical solution, the light transmittance of the base layer of the sealing gasket is greater than 80%. The thickness of the base layer in the middle of the sealing ring is about 0.1 mm, and it is made transparent, which can ensure that the two-dimensional code, number code and other information symbols prepared on the inner surface of the upper end of the cover can be seen through and collected.

As a further improvement of the above technical solution, an oxygen absorbent and/or an anti-mold agent can be added to the gasket. According to different additives, the sealing gasket can give the bottle cap new functions. The addition of oxygen absorbing agent can make the bottle cap have the function of absorbing oxygen and extend the shelf life of the contents; adding the anti-mold agent can make the bottle cap have the function of anti-mold.

As a further improvement of the above technical solution, the bonding strength of the sealing gasket and the cap body is less than the pulling force of the pull ring bottle cap. By adjusting the self-adhesiveness of the sealing gasket, when the bottle cap is opened, the bonding strength between the sealing gasket and the cap body is less than the pulling force of the pull-tab bottle cap, thereby facilitating opening.

At the same time, the present invention provides a packaging container, including a container body, the container body includes a container opening, and also includes the above-mentioned side pull ring easy-open lid, the side pull ring easy-open lid seals the container opening .

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present invention, the following will briefly describe the drawings that need to be used in the description of the embodiments. Obviously, the drawings described are only a part of the embodiments of the present invention, rather than all the embodiments, and those skilled in the art can also obtain other design schemes and drawings based on these drawings without creative work.

Figure 1 is a front view of the side pull ring easy-open lid of the present invention;

Figure 2 is a side view of the side pull ring easy-open lid of the present invention;

Figure 3 is a top view of the side pull ring easy-open cover of the present invention;

Figure 4 is a cross-sectional view of the gasket of the side pull ring easy-open lid of the present invention;

Fig. 5 is a partial structural diagram of the packaging container of the present invention.

Detailed ways

In the following, the concept, specific structure and technical effects of the present invention will be clearly and completely described in conjunction with the embodiments and drawings to fully understand the purpose, features and effects of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work belong to The scope of protection of the present invention. In addition, all the connection/connection relations mentioned in the text do not only refer to the direct connection of the components, but refer to a better connection structure by adding or reducing the connection accessories according to the specific implementation. The various technical features in the invention can be combined interactively on the premise of not conflicting with each other.

Embodiment 1: With reference to Figures 1 to 4, a side pull ring easy-opening lid includes a cylindrical lid body 1 that is punched and stretched from a 0.2mm thick aluminum alloy sheet. The lid body 1 It includes a top wall 11 and a side wall 12, the top wall 11 is a circular flat surface, the side wall 12 has a ring shape, and the top wall 11 and the side wall 12 are in a circular arc transition. The front side of the side wall 12 is provided with a tongue 13 extending obliquely outward, a fixing hole 14 is provided on the tongue, and a pull ring 2 made of high-density polyethylene is provided. The root of the pull ring 2 is Wrap the fixing hole during injection molding to ensure that the connection strength between the pull ring and the tongue is greater than 60N. At the same time, there is a 15mmX15mm ring hole in the pull ring. The ring hole can be used to facilitate the penetration of human fingers, and then pull the ring.

The cover body 1 is provided with a triangular opening 15 on the side wall 12, the opening 15 is located at the junction of the tongue 13 and the side wall 12, and the inner surface of the cover body 1 is also provided with an opening engraving Line 3, with the innermost sharp corner of the opening 15 as the junction point 16, the opening score line 3 includes a starting end 30, a gap 4 is provided between the starting end 30 and the junction point 16, so The length of the blank section 4 is 0.4 mm, that is, on the side wall, the area about 0.4 mm after the junction point 16 is not lined.

The opening score line 3 includes a continuous side wall section 31 and a top wall section 32. The side wall section 31 is provided on the front side of the side wall and extends upward from the starting end, and the top wall section 32 is located On the top wall, the depth of the entire opening engraved line 3 remains the same, and the depth of the engraved line is such that the thickness of the remaining material of the cover body is about 0.1 mm; the top wall section includes an end which is connected to the outer side of the top wall. No engraving line is set where there is 2mm left on the end face. There are two scoring lines 3 for opening the lid, and the two scoring lines for opening the lid are mirror images of each other with the center line of the lid body.

A gasket 5 is also provided on the inner surface of the top wall of the cover body. The gasket 5 is a self-adhesive thermoplastic elastic material. The gasket 5 includes an annular sealing ring 51 and a disc-shaped base layer 52. The base layer 52 is located in the middle of the sealing ring 51, and the sealing ring 51 includes a groove 53 with a downward opening. The thickness of the bottom of the card slot is about 0.5 mm, the height of the card slot is about 1.5 mm, and the thickness of the base layer is about 0.1 mm. It should be understood that the gasket is made of thermoplastic elastic material as the base material. During the manufacturing process, additives are added to make the gasket self-adhesive. Self-adhesiveness means that the gasket can make the gasket self-adhesive through its own viscosity. The sealing gasket does not need to be fixedly connected with the bottle cap by coating adhesive. In the field of macromolecules, those skilled in the art can improve the properties of materials according to the needs of production. By adding various additives, the materials have different properties and the materials have a certain degree of self-adhesiveness. For technical personnel, it can be achieved. However, in the field of materials applied to the sealing gasket of beverage bottle caps, the inventor is the first to propose that the sealing gasket is made of a self-adhesive thermoplastic elastic material. Moreover, the inventor’s practical verification shows that the sealing gasket of the self-adhesive thermoplastic elastic material has very excellent performance. It is not only environmentally friendly and sanitary, but also has a lower manufacturing cost. In the traditional bottle cap, when assembling the bottle cap, it is necessary to coat a layer of adhesive between the sealing gasket and the bottle cap to achieve the adhesion between the two. In order to facilitate the opening and reduce the adhesive force, the current In some technologies, another layer of release agent is applied, that is, the prior art requires two layers of chemical agent to be applied between the bottle cap and the sealing gasket, which not only increases the cost of raw materials, but also increases the processing time. Labor and process costs. Moreover, the adhesives and release agents used in the prior art are not environmentally friendly. However, the side pull ring easy-opening lid of the present invention eliminates the conventional techniques of coating adhesives and coating release agents, reduces organic matter emissions, reduces material consumption and corresponding process measures.

3, the outer diameter of the top wall is D1, the outer diameter of the sealing ring is D2, and the top wall section of the opening score line includes an arc section, and the opening score line is on the outer diameter of the arc section of the top wall For D3, there is the following mathematical relationship: D2<D3<D1. The distance between the two opening engraved lines on the front side is W1, and the distance between the two opening engraved lines on the back side is W2, W1<W2<D1. Preferably, W2=0.9*D1. The outer diameter of the arc-shaped section of the top wall of the switch score line is set to be larger than the outer diameter of the sealing gasket for easier opening.

When working, the cap body is sleeved on the crown-shaped mouth of the bottle, and then the cap body is compacted, and the sealing gasket seals the bottle mouth, so that the side pull ring easy-opening cap of the present invention seals the bottle mouth. When opening the bottle cap, the user only needs to put his fingers through the ring hole, then lift the pull ring and lift the pull ring forcefully. Since the connection strength between the pull ring and the tongue protrusion will be greater than the opening force of the bottle cap, when the user's pull is greater than the opening force When the force is less than the connection strength between the tab and the tongue, the cap will split along the opening score line, and then the part of the cap body between the two opening score lines will be lifted with the tongue and the tab. , And the part outside the two opening scoring lines loses the connection and separates it from the crown-shaped bottle mouth under its own force, and there is a gap between the end of the opening scoring line and the lid body , So the cover body remains connected as a whole after opening, and since the sealing gasket is self-adhesive, the sealing gasket still adheres to the inside of the cover body after opening. At this time, the entire side pull ring easy-opening cover can be collected and recycled.

Of course, in some embodiments, the outer diameter of the arc section of the opening score line may be smaller than the outer diameter of the sealing gasket, and the specific setting may be adjusted according to the requirements of the opening force and the requirements of the sealing force.

Further as a preferred embodiment, the base layer 52 of the gasket is made transparent, and a two-dimensional code or other coded information is printed on the inner surface of the top wall 11. The outer surface of the top wall is printed or laser-engraved with patterns or other logo characters.

Embodiment 2: The pull ring is a metal member, and the pull ring and the tongue and protrusion are fixed by riveting. The rest of the structure is the same as the first embodiment.

Embodiment 3: The pull ring and the cover body are homogeneously formed into one piece. Since the pull ring and the cover body belong to the same metal sheet, they are then formed after punching, stretching, and crimping. At this time, no fixing is required in the tongue and convex The rest of the structure is the same as that of the first embodiment.

Embodiment 4: When the outer diameter of the top wall of the easy-opening lid is greater than 40mm, the base layer in the middle of the gasket can be removed, but a connecting transition ring with a thickness of 0.3mm should be added inside the sealing ring. The rest of the structure is the same as that of the first embodiment.

Embodiment 5: The depth of the opening scribe line in the side wall section gradually increases from bottom to top, and the length of the blank section is 0.3 mm. It is understandable that the smaller the length of the blank section, the lower the sealing strength of the bottle cap, and the greater the possibility of accidental opening of the bottle cap. Of course, the opening force of the bottle cap will also be smaller. The reduction of the sealing strength can be compensated by setting the change of the depth of the scribe line of the side wall section of the scribe line of the cover body. The rest of the structure is the same as that of the first embodiment.

Embodiment 6: The cover body is made of stainless steel plate. When the material of the cover body is changed, the thickness of the plate and the depth of the opening engraving line will be adjusted accordingly as required.

Referring to Figures 2 and 5, the present invention also provides a packaging container including a container body a, the container body including a container opening b, and the side pull ring easy-opening lid of any of the above-mentioned embodiments. The side pull ring easy-open lid seals the container opening.

It is understandable that the packaging container can be made of glass, metal, plastic, ceramic, etc., and the size of the opening of the container is not limited. As long as the packaging cover can cover the bottle mouth, and the groove of the sealing gasket can block the bottle mouth. At the same time, the connection strength between the gasket and the cover can be adjusted. The adjustment method is to adjust the material formula and molding method of the gasket, so that the gasket can be divided into ozone sterilization gasket, normal temperature gasket, pasteurization gasket, heat Filling gaskets, high temperature resistant gaskets, etc., suitable for a variety of different container needs.

The preferred embodiments of the present invention have been described in detail above, but the invention is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. These equivalent modifications or replacements are all included in the scope defined by the claims of this application.

Claims

The side pull ring easy-open lid includes a cylindrical lid body, the lid body includes a top wall and a side wall, one side of the side wall is provided with a tongue extending obliquely outward, and the tongue is fixed with A pull ring, the cover body is provided with an opening score line, characterized in that: the tongue and the side wall include a junction point, the opening score line includes a starting end, and the starting end and the junction point There is an empty section between, the length of the empty section is 0.3~0.5mm, the opening engraving line includes a side wall section and a top wall section, the side wall section is arranged on the side wall close to the tongue convex Side and extend upward from the starting end; the top wall section is located on the top wall. To
The side pull ring easy-opening lid according to claim 1, wherein the top wall and the side wall arc transition, the top wall section includes an end, and the end is located within the arc transition line of the top wall .
The side pull ring easy-open lid according to claim 1, wherein the lid body is provided with a triangular opening, the opening is located at the junction of the tongue and the side wall, and the junction point is an open One of the sharp corners.
The side pull ring easy-opening lid according to claim 1, wherein the lid body is made of aluminum alloy sheet, tinplate sheet or stainless steel sheet, the top wall is a circular flat surface, and the top wall Arc transition with the side wall.
The side pull ring easy-opening lid according to claim 1, wherein the tongue is located on the front side of the side wall, there are two opening engraved lines, and the two opening engraved lines are mirror-symmetrical , The distance between the top wall sections of the two opening score lines on the front side is smaller than the distance between the top wall sections of the two opening score lines on the back side.
The side pull ring easy-opening lid according to any one of claims 1 to 5, wherein the opening engraving line is provided on the inner side of the lid body.
The side pull ring easy-open lid according to claim 1, wherein the tongue is provided with a fixing hole, the pull ring is a high-strength plastic member or a metal member, and the pull ring includes a root. The root part is fixedly connected with the fixing hole of the tongue convex.
The side pull ring easy-opening lid according to claim 1, wherein the pull ring and the lid body are homogeneous and integrated.
The side pull ring easy-open lid according to claim 1, further comprising a sealing gasket, the sealing gasket is a self-adhesive thermoplastic elastic material, and the sealing gasket is fixed on the inner side of the cover body by itself.
The side pull ring easy-open lid according to claim 9, characterized in that: the sealing gasket comprises a sealing ring and a base layer, the sealing ring is annular, the base layer is located in the middle of the sealing ring, and the sealing ring includes an opening Downward card slot.
The side pull ring easy-open lid according to claim 10, wherein the light transmittance of the base layer of the gasket is greater than 80%.
The side pull ring easy-opening lid according to claim 9, wherein the sealing gasket is provided with an oxygen absorbent and/or an anti-mold agent.
The side pull ring easy-open lid according to any one of claims 9-12, wherein the bonding strength of the sealing gasket and the lid body is less than the pull-open force of the pull ring bottle cap.
A packaging container, comprising a container body, the container body comprising a container opening, and is characterized in that it further comprises the side pull ring easy-opening lid according to any one of the above claims 1-13, the side pull ring easy-opening lid Seal the opening of the container.