JP2002249184A - Sheet-like lid - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plastic sheet cover which is easily used the same as a conventional plastic molded cover, easily opens and closes a take-out port, reduced in weight compared with the integrally formed conventional plastic molded cover having a complicated structure, and easy on cost efficiency and dumping. SOLUTION: The plastic sheet cover is formed with a lamination body which comprises a plastic base material sheet and an opening and closing flap. In this cover, a size of the opening and closing flap (a plane area) is smaller then the plastic base material sheet.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plastic sheet lid having an opening / closing flap which can be easily attached to an opening of a top plate of a packaging container such as a wet tissue. The present invention also relates to a plastic sheet lid provided at an opening of a packaging container without the need for complicated plastic integral molding.

[0002]

2. Description of the Related Art Conventionally, in the technology relating to the removal of a packaging container for a wet product such as a wet tissue, a pressure-sensitive adhesive is disposed on the inner surface side of an opening / closing lid of a resin film that covers a cut portion forming a removal opening of a packaging bag. As a technique for attaching the opening / closing lid to a packaging bag with a pressure-sensitive adhesive, Japanese Patent Publication No. 2-309
No. 48 is known. This technology is convenient and effective for pillow-packaged flexible packaging containers, but when paper containers and flexible packaging containers are folded to make them rigid, the compatibility between the openable lid and the packaging bag is improved. Had problems. For this reason, the take-out opening for taking out the wet tissue easily is formed of hard plastic.
Japanese Patent Publication No. 2970 has been proposed, but there remains a problem in sealing performance. Further, in order to improve the sealing property, the wet tissue is packed in a soft plastic bag package in advance, and the bag package is stored in the inner surface of the paper box, and is made of a hard plastic bag provided in an outlet provided in the paper box. Japanese Patent Application Laid-Open No. H10-1200 for taking out wet tissue by opening and closing a lid
No. 49 is also known.

[0003]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
In the case of using the hard plastic lid in Japanese Patent Publication No. 0049, the plastic opening / closing lid is convenient for taking out the wet tissue from the soft packaging bag stored in the paper box. Can be light, but the rigid plastic molded body of the opening / closing lid has to be heavy with the lid weight of 25 to 35 g from the viewpoint of sealing performance. In addition, when the hard plastic is integrally molded, the structure of the opening / closing lid is complicated, and the production of a molding die for that purpose is cumbersome, and naturally there is a problem that the product unit price is rejected. Also, when discarding the container, if only expensive lids are to be discarded,
There was a cost problem. Therefore, an object of the present invention is to develop a lid having a simple structure for a packaging container such as a wet tissue made of a plastic sheet on which an opening / closing flap is laminated. That is, the present invention provides a plastic sheet lid in which a simple flap opening / closing lid for opening and closing is laminated, which is suitable for sticking to a content take-out opening of a paper packaging container in which a paper sheet is assembled. The task is to

[0004]

SUMMARY OF THE INVENTION The present invention provides a laminated plastic sheet used as an opening / closing lid at an opening of a paper packaging container in which a paper sheet such as a wet tissue is assembled.
The plastic base sheet, which is one of the materials of the plastic sheet lid laminate, is provided with a cutout groove so as to surround a substantially central portion thereof. The flap is adhered to a plastic substrate sheet by a pressure-sensitive adhesive. When the opening / closing flap adhered to the plastic base sheet is opened for the first time, the area for taking out the wet tissue is cut off by the cutting notch, and at the same time, the plastic base sheet and the opening / closing flap are in close contact with each other. It is opened as it is. The portion of the plastic substrate sheet other than the separation area remains on the container side while being adhered to the container top plate. When the opening / closing flap is closed (at the time of closing), the plastic base sheet and the opening / closing flap are in the original state (with the tear marks left before being cut) so as to cover the outlet. State) to maintain the tightness of the container.

The present invention has the following basic features. (1) A plastic base sheet provided with a cutout so as to surround a substantially central portion thereof, and an opening / closing flap coated with a pressure-sensitive adhesive. A plastic sheet lid having a laminated structure, wherein the sheet lid is adhered to a container top plate and used as an opening / closing lid for maintaining a sealing property. (2) Size of plastic base sheet (planar area)
The plastic sheet lid according to the above (1), characterized in that the plastic sheet lid is larger than the opening / closing flap and is adhered to the top plate of the container with the difference in area between the flaps. (3) The cutout provided on the plastic substrate sheet is a closed loop or open loop half cut, which is cut and cut at the first opening of the container. The plastic base sheet and the opening / closing flap are opened in close contact with each other. When the plastic base sheet is closed (when the opening / closing flap is closed), the plastic base sheet and the opening / closing flap are in their original state (cut off). (1) The plastic sheet lid according to (1) or (2) above, wherein the plastic sheet lid is in a state before being cut while leaving tear marks.

In the present invention, the area of the plastic base sheet is smaller than the area of the top plate of the packaging container and larger than the opening provided in the top plate. It is necessary that the area of the opening / closing flap is smaller than the area of the plastic base sheet and larger than the opening provided in the top plate.
That is, when the above configurations are arranged in terms of area, the top plate of the packaging container> the plastic base sheet> the opening of the packaging container> the opening / closing flap> the cut-out half cut area (removal of the contents) Mouth). The reason for this configuration is that the difference in area between the plastic base sheet having a large area and the opening / closing flap having a small area is used as the glue allowance, and the plastic base sheet having the glue allowance is placed on the top of the packaging container. The wet tissue in the container is adhered and fixed to the back side of the plate, and the contents are taken out through the contents outlet (after cutting the cut-off half cut area) provided so as to surround substantially the center of the opening / closing flap. This is because such contents are taken out.

The plastic base sheet and the opening / closing flap constituting the laminated body of the plastic sheet lid may be made of the same kind of plastic or different kinds of plastics. It is necessary to be a slightly hard sheet in terms of sealing, low-pressure method polyethylene resin, polypropylene resin, polyethylene terephthalate resin,
Synthetic paper is suitable. The thickness of each sheet is not so much affected, but it is sufficient if each sheet is about 50 to 150 μm. Open-loop or closed-loop half-cut tear cuts (wet tissue outlets) provided so as to surround a substantially central portion of the opening / closing flap.
In general, an elliptical shape with a short side of 3 to 5 cm and a long side of 5 to 8 cm is used, but the particular shape is not limited, and the contents such as a star, a rhombus, a circle, and a gourd may be appropriately added. Adopt a shape that is easy to take out.

Unlike the conventional integrally formed plastic lid having a complicated structure, the plastic sheet lid of the present invention which can be attached to the paper packaging container is a laminate of plastic sheets. Therefore, it has a simple structure, can be easily fixed to the top plate of the packaging container, and can freely open and close the content taking-out port by grasping the knob of the opening / closing flap. In addition, the manufacturing cost of the laminate of the plastic sheet is inexpensive, and it is possible to economically provide a packaging container such as a wet tissue which can be easily prepared and can be easily separated and collected. The plastic sheet lid of the present invention is environmentally friendly. In the present invention, the material of the packaging container is described as being made of paper. However, the material is not limited to paper, and any material may be used as long as the plastic sheet lid of the present invention can be bonded to the top plate.
Further, the contents stored in the packaging container are not limited to wet tissues.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the drawings. 1 is a plan view of the plastic sheet lid of the present invention, FIG. 2 is a cross section taken along line AA of FIG. 1, FIG. 3 is a cross section taken along line BB of FIG. 1, FIG. 5 is a cross-sectional view of mounting the plastic sheet lid of the present invention on the container top plate, and FIG. 6 is a cross-sectional view of the plastic sheet lid in an open state.

As shown in FIGS. 1 to 4, a plastic sheet lid 8 according to the present invention is formed in a laminated body in which a plastic substrate sheet 1 and an opening / closing flap 2 are adhered by a pressure-sensitive adhesive 4. Have been. In the plastic substrate sheet 1, an area corresponding to the content taking-out port 7 has an open loop shape or a closed loop shape.
A notch 3 is provided. The plastic sheet lid 8 is attached to the back side of the top plate of the packaging container 9 as shown in FIG. The cutting notch 3 has a closed loop shape (FIG. 1).
) Or in the form of an open loop. The depth of the groove of the cut 3 for tearing may be about 20 to 90% of the thickness of the plastic base sheet 1. If the depth of the cut groove is shallow,
A large force is required for the tearing at the time of the initial opening, and if the groove is too deep, even a slight force will be torn, resulting in poor sealability and storage stability.

The opening / closing flap 2 is provided with a knob 5 at one end to facilitate opening and closing at the time of removal. For example, as shown in FIG.
The plastic substrate sheet 1 is torn along, and the plastic substrate sheet portion of only the outlet 7 is opened in close contact with the opening / closing flap 10. After the contents are taken out, when the lid is closed (at the time of closing), the container returns to its original state as shown in FIG. 5 and the hermeticity in the container is maintained. At this time, the area other than the opening of the opening / closing flap is in close contact with the opening / closing flap and the plastic base sheet. On the side of the opening / closing flap 2, a full-cut notch 6 is provided so that when the knob 5 is lifted, the knob 5 is not turned excessively because the knob 5 is turned back (clockwise in the drawing).
When the opening / closing flap is closed after taking out the wet tissue (when closed), the opening / closing flap separating portion 10
Closes the container while keeping it tightly adhered to the plastic substrate sheet with a pressure-sensitive adhesive. At the next opening, as shown in FIG. 6, the opening / closing flap separating portion 10 is opened while being in close contact.

[0012]

The plastic sheet lid of the present invention can be used in the opening of a paper packaging container such as a wet tissue packaging container, so that it is the same as a conventional integrally molded and molded plastic molded body lid. It is easy to use, the opening and closing of the outlet is easy, and the sealing property of the packaging container is sufficient. Moreover, the weight is reduced as compared with the conventional plastic molded lid, and it is economical and easy to dispose.

[Brief description of the drawings]

FIG. 1 is a plan view of a plastic sheet lid of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 1;

FIG. 4 is a sectional view taken along the line CC of FIG. 1;

FIG. 5 is a cross-sectional view of the plastic sheet lid of the present invention attached to a packaging container (when closed).

FIG. 6 is a view showing an open state of a plastic sheet lid according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Plastic base sheet 2 Opening / closing flap 3 Cut-off cutout 4 Pressure-sensitive adhesive 5 Knob 6 Folded cut 7 Wet tissue outlet 8 Plastic sheet lid of the present invention 9 Packaging container 10 Cut-off part of flap for opening / closing

Continued on the front page F-term (reference) 3E014 LB08 3E084 AA05 AA14 AA34 AB10 BA02 BA07 BA08 BA09 CA03 CB01 CB02 CB04 CC04 CC05 CC07 CC08 FD13 GA08 GB12 GB17 KB10 LA02 LB02 LB09 4F100 AK01A AK01B AK06 ATBBA DG07 GB18 JL00 JL03 JL05

Claims (3)

[Claims] 1. A plastic sheet lid having a laminated structure of a plastic base sheet provided with a cutout for cutting out so as to surround a substantially central portion thereof and an opening / closing flap coated with a pressure-sensitive adhesive. A plastic sheet lid, wherein the sheet lid is used as an opening / closing lid which is adhered to a container top plate to maintain a sealing property. 2. The size (planar area) of the plastic substrate sheet is larger than that of the opening / closing flap, and the difference in the area is affixed to the top plate of the container. Item 4. A plastic sheet lid according to Item 1. 3. The cut-off for cut-off is a closed loop or open loop-shaped half cut, which is cut off at the first opening of the container and the plastic base sheet is cut. -The opening flap and opening flap are in close contact,
3. The plastic sheet lid according to claim 1, wherein the plastic base sheet and the opening / closing flap are adhered to each other in an area other than the cut-off section when closed.