JPH0142534Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) This invention relates to a sealing material that can be sealed simply by applying pressure or pressure and heating, and is convenient for opening.

(Conventional example) As an invention of a sealing material that can be sealed simply by applying pressure or pressure heating and is convenient for opening, there is Utility Model Registration Application No. 79165 of 1985, which was invented by the applicant. .

(Problem to be solved by the invention) The invention of the above application is a sealing material made by adhering one side of a tape-like object that can be bonded on both sides by impregnating or coating the edges of one or more sides with an adhesive. It is a convenient sealing material that can be sealed by applying pressure or pressure and heat, and can be opened by pulling the tape-shaped object. The sealed area or volume decreases by the width of the shaped object.

The present invention aims to improve this drawback and increase the enclosed area or volume.

(Means for Solving the Problem) A sheet consisting of a sheet with adhesive applied to the edges and one or more tape-shaped objects folded vertically in half approximately along the center line, and the tape-shaped objects are Place the sheet on top of the adhesive on the edge or edges of one of the two folds, with the fold outward and the two folded edges inward, and apply the adhesive on the other folded edge of the sheet. The edges are overlapped and pressed or heated to achieve adhesive bonding, and the tape can be opened by pulling the tape-like object.

Further, in order to facilitate opening, the sheet is provided with one or more cuts near the edge of the tape-like object when the sheet is folded in two and the tape-like object is sandwiched between the edges.

(Function) When sealed, the area and volume between the two folded pieces of the tape-shaped object are also included.

The cut facilitates insertion of the toe of a finger and pulling of the tape-like object during opening. Also,
The cuts make it easier for the sheet to tear because stress is concentrated there when the tape-like object is pulled with the tip of the toe. If the adhesive force between the tape-like object and the sheet is stronger than the tensile force of the sheet, when the tape-like object is pulled, the sheet will separate the parts that are adhered to the tape-like object and the parts that are not adhered. Tear and open at the border. If the adhesive force between the tape-like object and the sheet is weaker than the tensile strength of the sheet, when the tape-like object is pulled, some parts of the sheet near the cuts will break, but the adhesion between the sheet and the tape-like object will separate. , to open.

Since the tape-like object is folded in half with the fold line facing outward and is sandwiched between sheets and adhered, it is possible to insert documents, etc. between the two pieces of the tape-like object.

(Example) An embodiment of this invention will be explained with reference to the drawings.

1 is a sheet of paper, cloth, etc. made of natural or synthetic fibers or plastic, and an adhesive 2 is attached to the edges thereof. The adhesive 2 may have adhesive strength at room temperature, or may develop adhesive strength upon application of pressure or heat.

Reference numeral 3 denotes a tape-like object made of fiber or plastic, which is bent vertically into two pieces approximately along the center line to form bent pieces 3a and 3b.

In order to seal using these sealing materials, the sheet 1 is folded in two, the sealing material is placed on one piece 1a, and the edge is placed on one side of the piece 1a or on the adhesive 2 of each of the plurality of pieces. , place the tape-like object 3 with the fold 4 facing outward and the two folded ends 5 and 6 facing inward, fold the other piece 1b, stack it on top of 1a, and process. Pressure or pressure heating 1
A and 3b and 1b and 3a are adhered. Thereby, the sheet 1 seals the sealed object to form a bag. The outer surfaces of the bent pieces 3a and 3b of the tape-like object 3 may be coated with adhesive in advance and one of the bent pieces may be adhesively fixed to the sheet 1 in advance. In this case, the sheet 1 is bent and the tape is attached. The adhesive 2 on the edges of the sheet 1 that abuts the outer surfaces of the folded pieces 3a and 3b of the shaped object 3 can be omitted.

To open these sealed bags, the tape-like object 3 at the edge is pulled, and the portions where the sheet pieces 1a and 1b adhere to the tape-like object 3 are torn and opened.

In order to make it easier to pull the tape-like object 3 when opening, it is necessary to make the tape-like object 3 a little longer than the length of the side formed by folding the sheet 1 in half, and then attaching the tape-like object 3 to one end. You just need to make it stick out a little, and another way is to make the fourth part stick out a little.
As shown in the figure, along the edges 5 and/or 6 of the adhered tape-like object 3, a small cut 7, either straight or perforated, may be provided in a portion of the folded piece 1a or/and 1b of the sheet. On this occasion,
Before or after making the cut 7, it is preferable to spread the adhesive to the area where the cut 7 is to be made, so that the adhesive 2 is applied to the cut by applying pressure or heating. 7 to make it easy to pull the tape-like object without interfering with the sealing of the sealing material.

The tape-like object 3 may be attached only to the edge of one side of the bag formed by folding the sheet 1 in half, or may be attached to the edges of two or three sides. At the edge of the side where the tape-like object 2 is not attached, it is possible to omit applying the adhesive 2 to either the piece 1a or 1b of the sheet 1.

(Effects) The structure is simple, it can be sealed without reducing the volume or area, and the sealing process is simple, making it suitable for large quantities of sealing using a machine, and special tools are required to open the seal. It can be opened by simply pulling the tape-like object, and the opening is not unsightly.

[Brief explanation of the drawing]

What is shown in the drawings is an embodiment of this invention,
Figure 1 is a plan view of the sheet coated with adhesive;
The figure is an enlarged perspective view of a part of the tape-like object, FIG. 3 is an explanatory cross-sectional view of a sealed bag, and FIG. 4 is a plan view thereof. 1... Sheet, 2... Adhesive, 3... Tape-shaped object,
3a, 3b...bent pieces, 4...folds, 5, 6...ends.

Claims (1)

[Scope of utility model registration request] It consists of a sheet with adhesive applied to the edges and one or more tape-like objects that are folded in half lengthwise approximately along the center line; A sealing material that has one or more cuts near the edge of a tape-like object when the tape-like object is sandwiched and adhered.