JPH1191810A - Container cap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely pierce a pierce sheet by preventing the sheet from being pushed inside of a cap or dropped from a cap main body in piercing the pierce sheet. SOLUTION: This container cap 1 comprises a cap main body 6 which is attached to a spout of a container 3 and has an opening part 5a on its top face 5, and a pierce sheet 2 mounted on the cap main body 1 covering the opening part 5a of the top face 5 from the inside of the cap. Usually the cap seals the container 3, and when the contents in the container 3 is to be discharged out of the same, the pierce sheet 2 is pierced. In this case, a holding protrusion 5b which holds the pierce sheet 2 in between the tip end face of the container spout 3a facing the tip end face, is provided on the inner face of the cap main body 6 top face.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid or viscous material in a container without removing a cap by piercing a piercing sheet provided at an opening in a top surface of the cap.
The present invention relates to a container cap capable of suitably discharging contents such as powder from a container.

[0002]

2. Description of the Related Art Conventionally, for example, a foamed plastic sheet covering an opening at the top surface of a cap of a container is perforated with a perforated tube or the like, and the perforated tube is pierced through the sheet as necessary. Container caps for discharging the contents in the container by using it as a discharge pipe in a state of being used are used in various fields. However, in the case of the container cap, depending on the contents, use, and the like, the foamed plastic sheet is attached to the top surface of the cap body using an adhesive or an adhesive,
In some cases, it cannot be welded by heat welding.In this case, the foamed plastic sheet is fixed to the container cap only by the pressing force between the cap attached to the container and the tip of the base of the container. The plastic sheet is not perforated and is pushed into the inside of the cap by the end of the perforated tube, or in some cases, the foamed plastic sheet falls off the container cap, and the contents in the container overflow from the outside of the perforated tube. Sometimes it came out.

[0003] The present invention has been made in view of the above circumstances, and by providing a predetermined holding projection on the inner surface of the top surface of a container cap, a hole is formed by the tip surface of the container spout and the top surface of the cap. An object of the present invention is to provide a container cap capable of firmly holding a sheet for holding the sheet and securely punching the sheet.

[0004]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a cap body attached to a spout of a container and having an opening in a top surface thereof, and a cap body having an opening in the top surface inside the cap. A container which is formed of a perforated sheet attached to the cap body so as to cover the container, and which always seals the container, and in which the perforated sheet is perforated when the contents in the container are discharged to the outside of the container. In the cap for use, a projection for sandwiching the sheet for perforation is provided between the top surface of the cap body, the top surface of the cap body, the front surface of the container spout, and the front surface. A container cap is provided. Here, the perforated sheet is placed on the inner surface of the top surface of the cap body, and the pinch projecting from the top surface of the spout of the container and the top surface of the cap body attached to the spout. It is more preferable that the portion that is fixed to the cap body by the pressing force with the projection for use and that is not pressed can be separated from the cap body.

That is, the container cap of the present invention faces the front end surface of the container spout when the cap main body is attached to the spout of the container on the inner surface of the top surface of the cap main body. By protruding the holding projections for holding the sheet for perforation, the pinching force of the sheet for perforation due to the top surface of the container and the top surface of the cap body when the cap is attached to the container outlet. When the sheet for perforation is perforated using a perforated tube, for example, when the perforated sheet is forcibly pushed into the inside of the cap by the tip of the perforated tube without being perforated, and is prevented from falling off from the cap body when the perforated sheet is perforated using a perforated tube. Can be.

[0006] Here, the perforated sheet is placed on the inner surface of the top surface of the cap body, and is fixed to the cap body by a pressing force between the tip end surface of the container and the holding projection. And if the part that is not pressed can be separated from the cap body, there is no need to use an adhesive or a pressure-sensitive adhesive to attach the perforating sheet, or to perform welding such as heat welding, and the clamping force is reduced. In addition to being stronger, the perforated sheet is attached to the cap body in a non-adhered state, so that the sheet can be easily reused by replacing the sheet.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail with reference to the drawings. 1 and 2 are longitudinal sectional views of a cap 1 showing an example of the container cap of the present invention. FIG. 1 shows a state before a perforating sheet 2 is perforated, and FIG. 2 shows a state after the perforating sheet 2 is perforated. Is shown.

The cap 1 is formed integrally with a cylindrical portion 4 attached to a mouth portion (a spout) 3a of the container 3, and has an opening 5a at the center thereof and an inner surface of the opening 5a. The cap body 6 includes a top surface 5 having a holding projection 5b protruding at a predetermined position, and a perforation sheet 2 attached inside the top surface 5, and the perforation sheet 2 is perforated. It is pierced by a tube 7. Here, the cap 1 hermetically seals the container 3 by attaching the cylindrical portion 4 to the base 3a of the container 3.
A stopper type in which the base 3a and the cylindrical part 4 are fitted may be used, but the perforated sheet 2 is firmly held between the tip end surface of the base 3a and the top surface 5 of the cap 1. As shown in the drawing, a male screw part 3b is formed on the outer peripheral surface of the base part 3a, and a female screw part 4a is provided on the inner peripheral surface of the cylindrical part 4. It is preferable that the sheet for perforation 2 can be clamped by a caulking force.

In this case, the size of the base 3a of the container 3 is not particularly limited, and the inner diameter of the base 3a is usually 10 to 120 mm, particularly preferably 20 to 60 mm. The size of the opening 5a of the top surface 5 is not particularly limited as long as it is smaller than the inner diameter of the base 3a. When the perforated pipe 7 is used as a means for perforating, it is preferable that the outer diameter of the perforated pipe 7 <the diameter of the opening 5a of the top surface 5 ≦ [inner diameter of the base 3a−thickness of the perforated sheet 2 × 2]. In particular, the outer diameter of the perforated tube 7+ (10-20
mm) = [inner diameter of base 3a−thickness of sheet 2 for punching ×
2] is more preferable. The material of the cap body 6 is not particularly limited. However, in consideration of strength, rigidity, etc. sufficient to exhibit each function as a cap, the material of the cap body 6 is a high-density polyethylene ( HDPE), polypropylene (PP), medium-density polyethylene (MDPE), polyamide (Ny), and other synthetic resin materials and metal materials.

At the position on the inner surface of the top surface 5 opposite to the distal end surface of the base 3a, as described above, the holding projection 5 is provided.
b, the holding projection 5b is provided with the cap 3 when the cap 1 is attached to the cap 3a of the container 3.
The material, shape, size, and the like are not particularly limited as long as the sheet for perforation 2 can be firmly clamped in combination with the front end surface of the top surface a. Considering the easiness of the operation, it is desirable that the material of the cap body 6 is the same.

Considering that the shape is desirably such that when the sheet for perforation 2 is sandwiched as described above, the sheet for perforation is desirably firmly engaged and the sheet is not damaged. For example, the cross-sectional shape is preferably, for example, a triangle, a quadrangle, a semicircle, or the like, and the bird's-eye view shape is desirably a ring shape in accordance with the shape of the distal end surface of the base 3a. In consideration of the strength of the sheet for perforation and the like, a plurality of holding projections can be intermittently protruded in a ring shape, and the ring diameter is the diameter of the maximum height of the holding projection 5b. Is preferably larger than the inner diameter of the base 3a of the container 3 and smaller than the outer diameter thereof. Here, when there is play between the cylindrical portion 4 of the cap 1 and the base portion 3a of the container 3, even if the center of the cylindrical portion 4 and the center of the base portion 3a are maximally displaced, they are used for holding. It is preferable to adjust the ring diameter of the holding projection 5b so that the maximum height of the projection 5b does not enter the inside of the base 3a.

The maximum height of the projections 5b is appropriately selected according to the material and thickness of the sheet 2 for perforation, the cross-sectional shape of the projections 5b, and the like. Thickness ÷ 2) ± (0-2, especially 0-1)
mm. If the maximum height is too low, it may be difficult to firmly bite into the perforated sheet 2, and if it is too high, the perforated sheet 2 may be damaged. The protrusions 5b may be provided not only as a single protrusion but also as multiple protrusions having different ring diameters as necessary.

The material and sheet thickness of the perforated sheet 2 are not particularly limited. However, the perforated sheet 2 always has the strength required for sealing the container, and has as small a perforating force as possible. It is desirable to select such a material and sheet thickness, and the material is preferably a foamed plastic sheet, particularly polyethylene, polypropylene,
A foamed plastic sheet made of polystyrene or the like is preferable, and the expansion ratio is more preferably 3 to 20 times, and particularly preferably 5 to 10 times. The thickness of the sheet depends on the thickness and expansion ratio of the foamed plastic sheet, but is usually about 1 to 1
0 mm, especially 2 to 5 mm is preferred. Further, it is desirable that the size is slightly larger than the inner diameter of the base 3 a of the container 3, for example, the diameter is larger than the base 3 a.
It is preferable that the inner diameter is about 5 to 30 mm, particularly 10 to 20 mm larger than the inner diameter, and specifically, the diameter is about 15 to 150 mm.
mm, especially 30 to 80 mm.

The material of the perforated tube 7 is not particularly limited, and any known material can be used. For example, the perforated tube 7 is made of a metal material, a synthetic resin material such as HDPE, PP, or Ny. A pipe body having a sharp end can be used so that the perforation sheet can be perforated.

In order to manufacture the container cap 1, first, the cap body 6 is molded by a conventional method. Here, the holding projections 5b are bonded to the cap body 6 with an adhesive or heat welding. For example, it can be protruded from the top surface 5 by molding, but it is preferable to integrally mold the cap body 6 when molding. Further, the perforated sheet 2 may be formed into the above-mentioned shape, but it is preferable that a sheet-formed one is usually punched into the above-mentioned shape and used. The perforation sheet 2 can be attached to the inside of the top surface 5 of the cap body 6 using an adhesive, a pressure-sensitive adhesive or the like, or can be attached in a bonded state by welding such as heat welding.
By the above-mentioned holding projections 5b projecting from the top surface 5 of
Since the pinching force for holding the perforated sheet 2 when the cap body 6 is attached to the base 3a of the container is increased, the perforated sheet 2 is attached to the inside of the top surface 5 of the cap body 6 in a non-adhered state. It is desirable. In this case, when the container cap 1 is attached to the container 3, a sheet falling-off preventing structure (not shown) before capping is previously applied to the cap body 6, specifically, for example, the top surface of the inner peripheral surface of the cylindrical portion 4 of the cap body 6. If a rib-like projection (inner rib) is provided in the vicinity of the cap 5, the perforated sheet 2 placed on the top surface 5 of the cap body 6 in a non-adhered state when the container cap 1 is attached to the Even if it comes off from the surface 5, the perforated sheet is hooked on the rib-shaped projection, so that it can be prevented from falling off.

The container cap 1 formed in this manner is used to seal the container
a, and the male screw 3
The punching sheet 2 is firmly held between the tip surface of the base 3a and the holding projection 5b by the caulking force of the female thread 4a and the female screw 4a. Then, when discharging the contents from the container 3, as shown in FIG.
To the opening 5 in the top surface 5 of the cap 1.
After a is inserted, the perforated sheet 2 is perforated by pushing the perforated hole sheet 2 from outside the top surface 5 of the cap 1 so as to penetrate the perforated sheet 2.

Here, in the case of the present invention, as described above, since the perforating sheet 2 is firmly held between the tip end surface of the base 3a and the holding projection 5b, for example, the perforating sheet 2 Is placed in a non-adhered state on the top surface 5 of the cap body 6, the perforated sheet 2 is pushed into the inside of the cap 1 by the tip of the perforated tube 7 without being perforated, or the base 3 a Without falling off from the gap between the tip end surface and the holding projection 5b and from the cap body 6,
Therefore, when attempting to pierce the piercing sheet 2 with the piercing tube 7, the contents of the container 3 can be pierced without overflowing.

If the outer diameter of the perforated pipe 7, the thickness of the perforated sheet 2 and the inner diameter of the base 3a are appropriately adjusted as described above, the perforated sheet 2 can be pierced as shown in FIG. The outer wall of the perforated pipe 7 and the perforated sheet 2 after perforation are in close contact with each other, so that the perforated pipe 7 can be maintained in a state of being pierced through the top surface 5 of the cap 1 and the outer wall of the perforated pipe 7 can be maintained. Since the contents of the container 3 do not leak to the outside,
This perforated pipe 7 can be suitably used as a discharge pipe for discharging the contents of the container 3.

As described above, according to the container cap 1, when the perforating sheet 2 is to be perforated, the perforating sheet 2 is pushed into the inside of the cap 1 or falls off the cap body 6. Therefore, the contents of the container 3 can be reliably pierced without overflowing, and the contents can be easily discharged without removing the cap 1. , Such as foods and drinks such as agricultural chemicals, adhesives, oils, soy sauce, alcohol, milk, etc., and liquids for medical use, viscous materials, powders, etc., which are required to be discharged from containers without touching the human body, or discharged Containers containing various liquids, viscous materials, and powders that may contaminate the periphery of the container if spilled during cleaning. Poor adhesion between cap and foam plastic sheet, but contents that are desired to be discharged by perforation. It is useful as a housing for a cap for a container. In particular, when the perforated sheet is attached in a non-adhered state, it is particularly useful as a cap for a container containing, for example, a developer, an adhesive, an oil agent, the above-mentioned food and drink, a medical liquid, a viscous substance, and a powder. is there.

The container cap of the present invention is not limited to the above configuration, and may be variously modified without departing from the gist of the present invention.

Next, the present invention will be described in more detail with reference to examples. In the above configuration example, the method of attaching the container cap to the container is a screw type, and the top surface of the cap body has a triangular cross-sectional shape, and the maximum height thereof is 1 sheet thickness of the sheet for perforation. / 2 ring-shaped holding projections are provided so as to protrude so that the portion of the maximum height thereof is opposed to the center in the width direction of the front end face of the mouthpiece portion of the container, and a foamed polyethylene sheet (2 mm thick) is used as a sheet for perforation. , A foaming ratio of 10) in a non-adhered state to obtain a container cap of the example. Using the container cap of this embodiment and the container cap of the comparative example having the same configuration as that of the container cap of this embodiment except that the holding projection is not provided, the same force is used. The capping force was applied, and the holding force of the perforated sheet was compared by pressing the perforated sheets of the container caps of the container caps of the example and the comparative example with the same diameter rod having the same perforation blade into the cap. The holding power of the container cap of the example was 3 to 9 times that of the container cap of the comparative example.

[0022]

According to the container cap of the present invention, the sheet for perforation is formed between the tip end surface of the container spout and the holding projection projecting from the top surface of the container cap by capping the container cap. Since the sheet is firmly held, the sheet is not pushed into the inside of the cap when the sheet for perforation is to be perforated, and does not fall off the cap body, so that the sheet for perforation can be reliably perforated. . Accordingly, the container cap of the present invention can be used as a food or drink such as a developer, a liquid fertilizer, a pesticide, an adhesive, an oil agent, soy sauce, sake, milk, etc., a medical liquid, a viscous substance, a powder, etc. Containers filled with various liquids, viscous substances, and powders that may be required to be discharged from the container so as not to touch the human body, and may spill when spilled, caps and foamed plastic sheets Adhesion is not good,
It can be suitably used as a cap of a container filled with contents desired to be discharged by perforation,
In particular, since the sheet for perforation can be attached in a non-adhered state, it is useful when the contents are, for example, a developer, an adhesive, an oil agent, the above food and drink, a medical liquid, a viscous material, a powder, and the like.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a container cap showing an example of the container cap of the present invention.

FIG. 2 is a longitudinal sectional view showing a state after piercing the container cap of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Container cap 2 Perforation sheet 3 Container 3a Container spout (base) 5 Top surface 5a Opening 5b Clamping protrusion 6 Cap body

Claims (2)

[Claims] 1. A container attached to a spout of a container,
A cap body having an opening in its top surface, and a perforation sheet attached to the cap body so as to cover the opening in the top surface from the inside of the cap, and always seals the container, A container cap on which the sheet for perforation is pierced when the contents in the container are discharged to the outside of the container. A container cap characterized in that a holding projection for holding the perforated sheet is protruded therebetween. 2. The method according to claim 1, wherein the perforating sheet is placed on an inner surface of a top surface of the cap main body, and the front end surface of the spout and the top surface of the cap main body attached to the spout are provided. The container cap according to claim 1, wherein the container cap is fixed to the cap body by a pressing force with the holding projection, and can be separated from the cap body at a portion that is not pressed.