JPH04220300A - Connecting method for guide tape for sheet roll machine - Google Patents

Abstract

PURPOSE:To provide the connecting method for guide tapes which can extremely rapidly connect the guide tapes even when the tapes are cut, produces beautiful and long-life press formed products and does not damage a hot plate, etc. CONSTITUTION:The guide tape is made from polyether ether ketone which is a synthetic resin fiber having heat resistance of >=280 deg.C and <=350 deg.Cm.p. and wear resistance and wet heat resistance and the ends of such guide tape are welded partially to each other by ultrasonic waves.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention is applied to a sheet roll machine used for pressing laundry sheets, wrapping cloths, yukatas, etc. in a laundry factory, and for press finishing for drying. The present invention relates to a method for connecting guide tapes used to prevent the guide tapes from curling up during processing.

0002

[Prior Art] As is well known, a sheet rolling machine is equipped with a hot plate (trowel) whose upper surface is bent in a sine curve shape.
A pad roll is placed in each concave portion of the hot plate in pressure contact with the concave surface of each hot plate, and an endless conveyor belt is interposed between the hot plate and each pad roll. Furthermore, an endless guide tape is interposed between the hot plate and the pad roll to prevent the washed sheets from turning over. The washed sheets are then inserted between the conveyor belt and the guide tape, pressed, and dried at the same time. The guide tape is made of polyester, polyimide, or the like, and is kept under tension.

[0003] By the way, a hot plate can be heated from approximately 160°C to 220°C.
The guide tape is heated to a temperature of about 0.degree. C., and this guide tape wears out over time and often breaks when the sheet rolling machine is in operation.

[0004] Conventionally, the following methods have been used to deal with the breakage of the guide tape, ie, to replenish new tape or to connect the guide tape.

[0005] The first connection method is to simply tie both ends of this guide tape. This is the simplest method and takes the least amount of time. The second method is to connect both ends of the guide tape with metal fittings of a stapler, and this is also a simple method like the first method. The third method is to connect both ends of the guide tape with thread.

[0006]

[Problems to be Solved by the Invention] Although the first method is simple, since both ends of the guide tape are tied, these knots appear as wrinkles on the pressed sheet, so it is difficult to press. Quality will deteriorate. Furthermore, the knot is approximately 15 times as thick as the guide tape, creating a large amount of resistance at the entrance to the hot plate. The tape drops rapidly and breaks from this knot, and each time it breaks, the machine must be stopped and new tape added. Each time it is replenished, all the workers (usually 5 to 7) engaged in finishing work are forced to take time off, which reduces work efficiency. Of course, even when the system is stopped, the steam supplied to the hot plate is still being consumed, resulting in a waste of energy. Even though the tape has a long lifespan, it is a waste of materials to replenish new tape every time the knot breaks.

[0007] The second means is that the metal fittings of the stapler may damage the surface of the hot plate, and rust may develop on the metal fittings, which may be transferred to the sheets. Further, the pad rolls are provided in multiple stages, and in order to improve the press quality, the pad rolls in the later stage rotate at a slightly higher speed than the rotational speed of the rolls in the earlier stage. Therefore, this roll slips slightly between it and the hot plate, and this slip may cause the metal fittings to damage the surface of this putt roll.

[0008] The third method does not have the disadvantages of the first and second methods, but sewing with thread is time-consuming and complicated as a connecting means when the guide tape is cut, which often occurs, and the boiler is not operated during that time. Since the sheet rolling machine must be stopped, this results in unnecessary energy loss and an extreme decrease in work efficiency.

[0009] Therefore, the purpose of the present invention is to provide a press-formed tape that does not wrinkle, can be used as long as its life as a guide tape, does not damage the putt roll or hot plate, and has the following features:
To provide a connecting method by which guide tapes can be connected simply and in a short time.

0010

[Means for Solving the Problems] A feature of the present invention is that the guide tape is made of thermoplastic synthetic resin fibers that have heat resistance with a melting point of 280°C or more and 350°C or less, and are resistant to abrasion and moist heat. The ends of the guide tape are welded together using ultrasonic waves.

[0011]

[Example] The material of the guide tape is polyether ether ketone, which has heat resistance, abrasion resistance,
It is a thermoplastic synthetic resin fiber that is resistant to moist heat, and its melting point is approximately 345°C. Also, the temperature of the sheet roll machine is 160 to 220°C, so the melting point is 280°C.
More than that is fine. Furthermore, if the melting point is too high, welding by ultrasonic waves will take a long time, so if the melting point is below 350°C, the welding work can be done in a short time and easily.

Further, according to the results of an experiment using a guide tape made of polyetheretherketone, the tape did not break even from January to March, and could be used for its full life.

[0013] The guide tape is not limited to one made only of polyether/ether ketone, but may also be one made of polyether/ether ketone interwoven with other synthetic fibers.

[0014]

[Effects of the Invention] The present invention allows the guide tape to be connected extremely quickly when it is cut, produces beautiful press-finished products, and has a longer service life than conventional guide tapes, preventing damage to hot plates, etc. There isn't. In particular, the remarkable extension of the life of the guide tape and its use to its full life enable sufficient use of materials, less energy loss, higher work efficiency, and are effective in saving materials, labor, and energy consumption. be. In addition, since ultrasonic waves are used as the means for welding the tape, welding can be performed instantly as soon as the power is turned on, and the waiting time is short, making it extremely efficient.The welding part of the tape is not heated, so Even in areas where a large amount of cotton dust etc. is generated around the sheet roll machine, there is no risk of fire and it is safe.

[0015]

Claims (2)

[Claims] Claim 1: The guide tape is made of thermoplastic synthetic resin fiber that has a heat resistance with a melting point of 280°C or more and 350°C or less, and is resistant to abrasion and moist heat. A method for connecting guide tapes for a sheet roll machine, characterized by partially welding the parts together using ultrasonic waves. 2. A method for connecting a guide tape for a sheet roll machine, wherein the synthetic resin according to claim 1 is polyetheretherketone.