JPH0576566U - Adhesive layer forming tool - Google Patents

Abstract

(57) [Abstract] [Purpose] It is an object to provide a convenient and compact adhesive layer forming tool capable of forming only an adhesive layer (particularly a pressure-sensitive adhesive layer) on an object. . [Constitution] Knife edge part (2) on the tip side of the case (1),
The rotating bodies (3) are respectively arranged on the base end side. An endless belt (4) whose surface is at least a fluororesin layer is suspended between the knife edge portion (2) and the rotating body (3). Furthermore, on the base end side of the case (1), the adhesive supply part (5) containing the adhesive (a)
The endless belt is provided along with the running of the endless belt (4).
(4) The adhesive layer (b) is formed on top.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an adhesive layer forming tool that can obtain the same function as a double-sided adhesive tape without using a release sheet such as release paper and without using a base material sheet. ..

[0002]

[Prior Art]

 A double-sided adhesive tape that is rolled into a roll with a pressure-sensitive adhesive (pressure-sensitive adhesive) layer provided on both sides of the base sheet and a release sheet coated on one side of the pressure-sensitive adhesive layer It is also used for industrial and industrial purposes as well as for consumer use.

In this case, from the viewpoint of convenience, the roll-shaped double-sided adhesive tape is housed in the case, the release sheet is peeled off and wound up, and the pressure-sensitive adhesive layer after removal of the release sheet is spread over the case. A double-sided adhesive applicator (referred to as A) has also been developed in which the pressure-sensitive adhesive layer is transferred to the target object while being pressed and moved to the target object at the shank.

Further, a double-sided adhesive tape is also known (referred to as B) in which a base material sheet having pressure-sensitive adhesive layers provided on both sides is wound in a roll shape without using a release sheet. In this case, the adhesive layer layers contact each other when wound in a roll, so the adhesive layer should be designed so that the adhesive force to the base sheet is greater than the peeling force at the contact surface. I do.

[0005]

[Problems to be solved by the device]

 However, in the case of the double-sided adhesive applicator of A above, the release sheet is a waste product, but the ratio of the release sheet to the product cost is considerably large, and it is troublesome to dispose of the release sheet after use. In addition, there is a problem that incineration at the time of its disposal may cause pollution.

The double-sided adhesive tape of the above B has an advantage that a release sheet is not used, but it is difficult to control the adhesive strength, and if the period from manufacture to use is long or the storage conditions are poor, the adhesive tape is adhered. The agent layers may not separate from each other. In addition, in this double-sided adhesive tape, a base material sheet that is not related to the adhesive action must be used, and there is also a disadvantage that the adhesive layer becomes thicker by the thickness of the base material sheet.

[0007] If there is a means that does not use a release sheet and a base sheet, its usefulness becomes immeasurable.

Under such a background, the present invention provides a compact and easy-to-use adhesive layer forming tool that can form only an adhesive layer (particularly a pressure-sensitive adhesive layer) on an object. The purpose is that.

[0009]

[Means for Solving the Problems]

 In the adhesive layer forming tool of the present invention, a knife edge portion (2) is arranged on the tip side of the case (1) and a rotating body (3) is arranged on the base side thereof, and these knife edge portion (2) -rotating body An endless belt (4) at least the surface of which is a fluororesin layer is suspended between (3), and an adhesive supply part (5) containing an adhesive (a) is provided on the base end side of the case (1). It is characterized in that the adhesive layer (b) is formed on the endless belt (4) along with the running of the endless belt (4).

The present invention will be described in detail below.

In the adhesive layer forming tool of the present invention, the knife edge portion (2) is arranged on the tip side of the case (1) and the rotating body (3) is arranged on the base side thereof. The width of the knife edge (2) should be approximately the same as the coating width of the adhesive on the object. The rotating body (3) means a roll-shaped or gear-shaped member that can rotate around the shaft (3a), and drive means is not particularly required.

An endless belt (4) is suspended between the knife edge part (2) and the rotating body (3). As the endless belt (4), a belt whose surface is at least a fluororesin layer is used. The endless belt is a generic term for an endless belt in which flat tape-like materials are joined and a seamless belt having no joint.

Such an endless belt (4) is obtained, for example, by the following method. A thin film tube made of fluororesin is cut into a predetermined width in the radial direction. After a flat film made of fluororesin is joined to form a tube, it is cut into a predetermined width in the radial direction. The raw tape or raw tube made of polytetrafluoroethylene is superposed on the surface of an endless belt made of woven fabric (in particular, a seamless belt woven by the bag-weaving method) and integrated by rolling and layering, and then baked at high temperature. And cut it to the specified width. The surface of an endless belt made of woven fabric (particularly a seamless belt woven by the bag-weaving method) is coated or impregnated with a dispersion of polytetrafluoroethylene, dried, and then baked at a high temperature and then to a predetermined width. Cut into. Using a raw tape yarn made of polytetrafluoroethylene as at least a part of the warp yarn or the weft yarn, a tubular seamless woven fabric is woven by a bag weaving method, and further firing and cutting are performed in an arbitrary order.

In the above, the bag-weaving method is a method in which the warp yarns are arranged in the front warp yarns and the back warp yarns, and the weft yarns are reciprocated two times to form one ring while sequentially forming a tubular shape. Knotting is done at both ends only.

A raw tape or raw tube made of polytetrafluoroethylene means a fine powder of polytetrafluoroethylene (a primary particle diameter of about 0.2 which is separated and granulated from a dispersion produced by emulsion polymerization of tetrafluoroethylene). Polytetrafluoroethylene particles of ~ 0.3 μm, secondary particle size of about 300-600 μm, easily made into fibers by a small shearing force, and well absorb organic solvents such as naphtha and white oil to form a paste) 100 weight Part, absorb 18 to 22 parts by weight of organic solvent such as naphtha and white oil, and then make a preformed product in the shape of sheet, round bar, wire, etc. It was done.

Further, an adhesive supply part (5) containing the adhesive (a) is provided on the base end side of the case (1). The adhesive supply part (5) is preferably a tank or container having a slit-shaped discharge port (5a). As the adhesive (a), liquid, solution or dispersion liquid adhesives such as solvent volatilization type, thermosetting type, moisture curing type and photocuring type are used. A preferred example of the adhesive (a) is a solvent volatilization type pressure sensitive adhesive.

The discharge port (5a) of the adhesive supply part (5) is brought into contact with or close to the endless belt (4), and the adhesive layer (4) is attached to the endless belt (4) as the endless belt (4) runs. b) is designed so that

[0018]

[Action]

 To use the adhesive layer forming tool of the present invention, it is sufficient to bring the knife edge portion (2) of the applicator into contact with the surface of the object and then move the applicator. Alternatively, the knife edge portion (2) of the applicator may be brought into contact with the surface of the object, and the object may be moved.

As a result, the endless belt (4) suspended between the knife edge part (2) and the rotating body (3) runs, but the endless belt (4) is bonded by the adhesive supply part (5). The agent (a) is supplied to form the adhesive layer (b), and since at least the surface of the endless belt (4) is composed of a non-adhesive fluororesin layer, it adheres to the object. The agent layer (b) is transferred and formed smoothly.

When the adhesive layer (b) formed on the endless belt (4) contains a solvent, the solvent may be volatilized in the case (1), but the adhesive layer (b) may be tacky or slightly tacky. If it has, there is no problem because it is transferred onto the object smoothly. Rather, it may be preferable that at least a part of the solvent volatilizes because the sticking operation is easier when sticking another material on the adhesive layer (b) formed on the target object. Many. Therefore, the method of suspending the endless belt (4) between the knife edge part (2) and the rotating body (3) in the present invention reduces the amount of solvent in the adhesive layer (b) and the operability of sticking. This is an advantageous method in terms of.

[0021]

【Example】

 Next, the present invention will be further described with reference to examples.

Example 1 FIG. 1 is a front view showing an example of the adhesive layer forming tool of the present invention, a part of which is cut away.

[0023] 100 parts of commercially available fine powder of polytetrafluoroethylene was used to absorb 20 parts of white oil to form a paste, which was then extruded into a sheet to prepare a preform, and the preform was then allowed to evaporate before the solvent was evaporated. Rolling was performed using a roll to obtain a raw tape.

Using a multifilament yarn of aromatic polyamide as a warp yarn and a weft yarn, weaving was performed by a bag weaving method to obtain a tubular seamless woven fabric.

The green tape was placed on the seamless woven fabric, rolled, and then fired at 390 ° C. This was cut into a predetermined width to produce an endless belt (4).

As shown in FIG. 1, a knife edge part (2) is attached to the tip side of a case (1) that can be gripped with one hand, and a shaft (3a) around the case (1) base end side. A roll-shaped rotating body (3) that rotates only in one direction was attached to the. The above endless belt (4) was suspended between the knife edge portion (2) and the rotating body (3).

(5) is an adhesive supply section (5) containing the adhesive (a) mounted on the base end side of the case (1). The adhesive supply part (5) is a small tank having a slit-shaped discharge port (5a), and has a structure that can be almost sealed.As an example of the adhesive (a), a solvent volatilization acrylic system is used. It is filled with a pressure sensitive adhesive solution.

Reference numeral (6) is a cap, which can be fitted on the tip side of the case (1).

Holding the adhesive layer forming tool with the right hand and moving it about 10 cm while abutting the knife edge part (2) on a suitable material such as paper, the endless belt (4) runs and the shape is formed on it. The formed adhesive layer (b) reached the knife edge portion (2), and the adhesive layer (b) started to be attached on the material.

Since the initial operation is completed by this, when the knife edge portion (2) of the adhesive layer forming tool is moved while abutting on the target object, the adhesive layer (b) smoothly moves on the target object. ) Could be formed by transfer.

The adhesive layer (b) on the endless belt (4) in the case (1) may be dried by leaving it to stand, but since it adheres to the object regardless of whether it is dried or not, from the next time onwards It is possible to perform the operation of forming the adhesive layer (b) on the object without performing the above-described initial operation.

[0032]

[Effect of the device]

 In the adhesive layer forming tool of the present invention, only the adhesive layer (b) such as the pressure sensitive adhesive layer is formed on the object. Therefore, since neither a release sheet nor a base sheet is required, there are cost problems associated with the use of release sheets and base sheets, problems with the disposal of release sheets, and base materials. The problem of increased thickness due to the presence of the sheet is completely eliminated.

Further, in the present invention, since the method of suspending the endless belt (4) between the knife edge part (2) and the rotating body (3) is adopted, the amount of solvent in the adhesive layer (b) is reduced. It is also advantageous in terms of sticking operability.

In addition, the adhesive layer forming tool of the present invention has the advantages of being easy to use and being compact.

Therefore, the adhesive layer forming tool of the present invention is extremely useful for consumer, industrial and industrial use.

[Brief description of drawings]

FIG. 1 is a front view showing an example of an adhesive layer forming tool of the present invention, a part of which is cut away.

[Explanation of symbols]

 (1) ... Case, (2) ... Knife edge part, (3) ... Rotating body, (3a) ... Shaft, (4) ... Endless belt, (5) ... Adhesive supply part, (5a) ... Discharge port, (6)… Cap, (a)… Adhesive, (b)… Adhesive layer

Claims (1)

[Scope of utility model registration request] 1. A knife edge portion (2) is provided on the tip side of the case (1).
, The rotor (3) is arranged on the proximal side, and the endless belt (4) whose surface is at least a fluororesin layer is suspended between the knife edge part (2) and the rotor (3), and An adhesive supply part (5) containing adhesive (a) is provided on the base end side of the case (1), and the endless belt (4) moves along with the running of the endless belt.
(4) An adhesive layer forming tool, characterized in that the adhesive layer (b) is formed on the adhesive layer forming device.