JPS5815468Y2 - Double-ply adhesive tape - Google Patents

Description

[Detailed description of the invention] This invention is a two-layered tape that is rolled up with the adhesive side facing outward so that the adhesive tape can be simultaneously and easily adhered to the front and back surfaces of a board or sheet when being wound up. Regarding adhesive tape.

Conventionally, adhesive tape (hereinafter referred to as "tape") is pasted to the edges of the board or sheet (hereinafter referred to as "sheet") to strengthen thin and weak materials such as boards or sheets. Or handled in the form of semi-finished products.

In this case, the tape may be applied to only one side of the sheet for reinforcement, but in most cases it is preferable to apply it to both the front and back sides, which has a greater reinforcing effect and stabilizes the balance between the front and back sides of the sheet.

Furthermore, the reason why it is preferable to apply the tape from the front and back is that, for example, a coarse mesh sheet, or raw veneer at a plywood factory (cut from raw wood into a thin sheet with a thickness of about 1 m/m with a rotary lace) is used. If the tape is applied only from one side to a material that is fragile and prone to cracking from its edges, such as sheets (such as sheets that are rolled up), and the sheet is wound up, the tape will pass through the mesh or cracks and penetrate into the underlying layer. It may adhere to the sheet and cause trouble, but this trouble can be prevented by pasting tape on both the front and back sides.

To apply ordinary tape to both the front and back sides of a sheet at the same time, hold two rolls of tape in tape holders at appropriate positions on the top and bottom of the sheet to be wound, and then feed out the tape separately. Since the tape must be crimped onto the sheet using upper and lower crimping rubber rolls, the crimping device and affixing operation become complicated.

However, by using the two-ply adhesive tape of the present invention, only one holder is required to hold the tape, and there is no need for a pressure roll, etc., and it is easy to insert the tape into the sheet to be wound up and wind it up. It can achieve the purpose of pasting on both sides.

To explain the structure of the tape of the present invention, as shown in FIGS. 1 and 2, two sheets of ordinary adhesive tapes 1 and 2 are stacked and wound with the adhesive side A and the opening facing outward.

The tape winding method is flat winding or twill winding (spindle winding).
Either is fine.

The base material of the tape may be paper, film, nonwoven fabric, etc. depending on the use and purpose, and the adhesive applied to the base material may be a rewetting adhesive, a solvent-activated adhesive, a heat-activated adhesive, or a release paper. A pressure-sensitive adhesive (adhesive) may be used in combination.

To attach the tape of the present invention to a sheet, all you need to do is to unroll the tape from the tape holder when the sheet is being wound up, activate it depending on the type of adhesive, and let it roll onto the sheet. is attached to the outer surface of the sheet winder, and similarly, 2 is attached to the inner surface of the sheet winding.

When inserting the tape, there is no need to press the tape onto the sheet using a pressure roll or the like, and the tape is firmly attached by the winding pressure of the sheet.

Depending on the type of tape adhesive, rewetting adhesive tapes activate the adhesive and develop adhesive properties by applying water to the adhesive surface immediately before the tape is inserted.

In addition, since the green veneer contains a large amount of water, it is possible to attach the veneer to the edge of the upper half plate without applying any water.

For solvent-activated adhesives, use an appropriate solvent instead of water, for heat-activated adhesives, heat with a hot roll or infrared rays, etc., and for adhesive tapes, just peel off the release paper just before inserting and stick as is. I can do it.

Each can be implemented with simple equipment.

As described above, since the tape of the present invention is wound by applying an adhesive to one side of the base material and overlapping the adhesive tape on the outside, the tape can be inserted and wound with a simple operation when winding the sheet. This is a useful two-ply adhesive tape that can be attached to both the front and back sides of a sheet at the same time.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the two-ply adhesive tape of the present invention, FIG. 2 is an enlarged sectional view taken along line A-A', and FIG. 3 is a schematic diagram showing an example of use of the tape according to the present invention. 1 is the tape with the adhesive side facing upward, 2 is the tape with the adhesive side facing downward, 3 is the sheet, 4 is the wound sheet, 5 is the tape of the present invention, 4
The 9th part is the adhesive layer, and the part C is the tape base material. ρ

Claims (1)

[Scope of utility model registration request] A two-ply adhesive tape characterized in that two adhesive tapes each having an adhesive coated on one side of a base material are wound one on top of the other with the adhesive side facing outward.