JPH04179535A - Method for endless processing of resin belt - Google Patents

Abstract

PURPOSE:To always accurately bond endless bonding surfaces without generating the irregularity of an adhesive by bonding a heat-fusion film to the endless bonding surfaces subjected to cleaning processing and subsequently pressing the endless bonding surfaces under heating. CONSTITUTION:The endless bonding surfaces 4a, 4b of both ends of a resin belt main body 1 obliquely cut by a skive machine are ground by a buff machine to be cleaned. After a heat-fusion film 7 is bonded to at least one of the endless bonding surfaces 4a, 4b, the endless bonding surfaces 4a, 4b of the resin belt main body 1 are brought into contact with each other and pressed under heating by a heating press to melt the heat-fusion film 7 and integrally bonded. By applying endless processing to the resin belt main body 1, a bonding time is shortened and the coating irregularity of an adhesive is eliminated and the endless bonding surfaces can be always accurately bonded without damaging appearance.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an endless processing method for a conveying resin belt, and more specifically, the present invention relates to a method for endless processing of a conveying resin belt, and more specifically, a resin belt that prevents adhesion failure on the endless joint surface and facilitates entrench processing. The present invention relates to a belt endless processing method.

[Conventional technology]

Conventionally, the resin belt main body 1 for conveyance has been constructed by laminating several layers of a core reinforcing layer 2 and a resin layer 3, and the endless processing method for such a resin belt main body l is as follows. For example, as shown in FIG. 2, there is an endless joint surface 4a obtained by diagonally cutting both ends of a two-ply type resin belt main body l using a skiving machine.

4b is thermally bonded and molded using a liquid adhesive 5, and as shown in FIG. A step method is known in which 6b is thermally bonded and molded using a liquid adhesive 5.

[Problem that the invention seeks to solve]

However, in the case of the conventional endless processing method as described above, since a liquid type urethane adhesive 5 is used, poor adhesion occurs due to uneven application of the adhesive 5, resulting in peeling of the joint, etc. There is a problem that it is inferior in durability,
In addition, since Adhesive 5 uses a two-component type consisting of a main agent and a hardening agent, there is a problem in that it requires a lot of time and effort to mix, and furthermore, the usage time after mixing the hardening agent is 4. ~
Since the time is only 5 hours, it depends on the atmospheric temperature and the number of pieces to be processed, and it has to be used in small portions, resulting in extremely low work efficiency and the problem of not being able to improve productivity.

[Purpose of the Invention] - This invention was devised by focusing on such conventional problems, and it eliminates uneven application of adhesive, there is no variation in adhesive, and it is possible to always join with high precision. It is an object of the present invention to provide an endless processing method for a resin belt that can shorten bonding time and improve productivity because steps such as drying of the agent are unnecessary.

[Means to solve the problem]

In order to achieve the above object, the present invention processes the endless joint surface of a resin belt body in which a core reinforcing layer and a resin layer are laminated, and attaches a heat-sealing film to at least one of the endless joint surfaces. After that, the endless joint surfaces of the resin belt body are brought into contact with each other, and the endless joint surfaces of the resin belt body brought into contact are heated and pressurized to integrally join them via the heat-sealing film. It is.

[Function of the Invention] This invention is constructed as described above, and by using a heat-sealing film as an adhesive for the endless joint surface of the resin belt main body, the joining time can be shortened and uneven application of the adhesive can be eliminated. Furthermore, it is possible to always join with high precision without contaminating the appearance.

[Embodiments of the invention]

Hereinafter, the present invention will be described in detail based on the accompanying drawings.

Note that the same components as those in the conventional example are given the same reference numerals, and the description thereof will be omitted.

FIG. 1 shows an endless processing method using the skiver method for a two-ply type resin belt according to the present invention.
2 is a resin belt body, 2 is a core reinforcing layer, and 3 is a resin layer, and the endless joint surfaces 4a and 4b of this resin belt body 1 are
is bonded by applying heat and pressure via the heat-adhesive film 7.

As the material of the heat sealing film 6, either urethane type or polyester type is arbitrarily selected depending on the material of the resin layer 3. Further, the thickness of the heat-sealable film 7 is 20 μm to 500 μm, and based on the results of experiments described later, 100 to 300 μm is used.

Next, a specific method of endless processing will be described. Endless joint surfaces 4a and 4b at both ends of the resin belt main body 10, which have been cut diagonally by a skive machine or the like, are polished and cleaned by a puff machine or the like. After pasting the above-described heat-sealing film 7 on at least one of the endless joint surfaces 4a and 4b, the endless joint surface 4
a and 4b are brought into contact with each other, and the endless joint surface 4a of the resin belt main body 1 brought into contact with each other.

4b was heated using an endless heating press.

Melting the heat sealing film 7 by applying pressure,
They are joined together in one piece.

By endlessly processing the resin belt main body 1 using such a method, joining time can be shortened, uneven application of adhesive can be eliminated, and joining can always be performed with high accuracy without contaminating the appearance.

Next, when the resin belt body 1 was subjected to a bending test using the heat-sealable film 7 of the above example, the following results were obtained.

(a) 5 Experimental Methods The endless performance of the resin belt made endless by the Skyver method is evaluated by (1) shear force measurement and (2) bending test using a Scott type bending tester.

伽)、Test conditions■』mu■Dish force (1)、Measurement using a tensile tester (2)、Tensile speed 50 mm/lll1n (b-2>
Scott A. curve (1), pulley diameter...025mm.

(2) Load: 35 kgf (C), test result cd) As is clear from the above test results, the thickness of the heat-sealing film used is 20 am to 500 μm, preferably , loOt of 1 m to 300 μm is used.

In addition, if the above range is exceeded, the bending performance will be affected.

Shear force decreases and endless performance deteriorates.

Also, during press vulcanization, the film flows out onto the belt,
The finished appearance will deteriorate.

〔Effect of the invention〕

In this invention, after the endless joining surface of the resin belt main body in which the core reinforcing layer and the resin layer are laminated as described above is processed, and a heat-sealing film is pasted on at least one of the endless joining surfaces. By bringing the endless joint surfaces into contact with each other, and heating and pressurizing the endless joint surfaces of the resin belt body brought into contact with each other, they are integrally joined via the heat-sealing film, resulting in the following excellent results. It is effective.

(a) 6 The drying time of conventional adhesives is no longer required,
The time required for endless joining work can be shortened and productivity can be improved.

(b) Since a liquid adhesive is not used as in the conventional method, there is no uneven application of the adhesive, and highly accurate endless bonding can be performed without defective adhesion.

(C) It is possible to prevent the appearance from becoming dirty due to over-application when applying the adhesive, and workability is also improved.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of an endless processing method using the Skyper method for a two-ply type resin belt according to the present invention;
FIG. 2 is an explanatory diagram of a conventional endless processing method for a resin belt by the SKYPER method, and FIG. 3 is an explanatory diagram for an endless processing method for a resin belt by the step method. l... Resin belt body, 2... Core reinforcement layer, 3...
・Resin layer, 4a, 4b... Endless joint surface, 7...
・Heat adhesive film. Agent Patent Attorney Nobuo Ogawa −

Claims (1)

[Claims] The endless bonding surfaces of the resin belt main body, in which the core reinforcing layer and the resin layer are laminated, are processed by creeling, a heat-sealing film is pasted on at least one of the endless bonding surfaces, and then the endless bonding surfaces are brought into contact with each other. A method for endless processing of a resin belt, characterized in that the endless joint surfaces of the resin belt bodies brought into contact are heated and pressurized to integrally join them via the heat-sealing film.