JPS58201210A - Manufacturing method of gas wrap pipe with signal line - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a waste wrap pipe with a signal line.

- Dust (dry air) on coaxial cables etc. for maintenance purposes.
A pipe that continuously supplies the water is used.

This waste pipe is manufactured by molding a metal tape (hereinafter referred to as LAP tape) with plastic resin laminated on one or both sides to prevent moisture permeation.
This pipe is called a wrap pipe.

In addition to flowing the supply waste inside this lap pipe, a signal line is built in for the purpose of flow rate alarm, other alarms of the gas supply equipment, meeting telephone, etc., but this signal line is used to improve workability. Inside the wrap pipe, it is not continuously bonded to the wall surface, but is bonded intermittently.

However, in the conventional manufacturing method, a thermoplastic adhesive was used as described later, so the entire lamp pipe was formed while the signal wire was intermittently adhered to the wrap tape surface, and the overlapping part was heated. During the closing process, if the adhesive is not sufficiently cooled and assimilated, the signal wire may become a wrap pipe,
It may peel off from the inner wall surface, and after forming the wrap pipe, when covering the pipe with a molten PE sheath as the exterior, the adhesive will melt due to heat and the same communication as above may occur when the pipe is wrapped around a winding frame etc. May cause wire peeling.

Therefore, the present invention uses a thermosetting resin as an adhesive,
It is designed to handle the process after forming the wrap pipe with signal wire.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A conventional method of manufacturing a gas wrap pipe with a signal line and a method of manufacturing the present invention will be described below with reference to the drawings.

In the figure, 1 is a wrap tape, 2 is a signal line, 3 is an adhesive discharge nozzle, 4 is the entire adhesive, and 5 is a holding roll.

In the figure, the forming device for forming the wrap tape 1 is omitted, but the wrap tape 1 is fed in the direction of the arrow.
During this time, the wrap tape 1 is gradually formed into a cylindrical shape by the forming device, and both edges of the wrap tape I are overlapped to form a cylindrical pipe. During this process, the signal line 2 is intermittently bonded to the surface of the wrap tape 10, which is the inner wall surface of the wrap pipe, and a nozzle 3 for discharging adhesive by an intermittent discharge mechanism is attached to the surface of the wrap tape 1. The adhesive 4 is discharged more intermittently, and then the signal wire 2 is pressed against the adhesive discharge surface of the wrap tape 1 by the press roll 5 and bonded. In this case, a material in which resin is not laminated on the surface to which the signal line 2 is bonded may be used.

In this process, there is basically no difference between the conventional manufacturing method and that of the present invention, but in the present invention, a thermosetting resin is used as the adhesive, so the thermosetting resin is removed from the discharge nozzle 3. It is discharged onto the wrap tape 1 which is intermittently moving.

The discharge timing of the discharge nozzle 3 must be controlled so as to be synchronized with the feed speed of the wrap tape l. As the thermosetting adhesive, one that heats up at 115 to 300°C is used.

The formed wrap pipe with signal wire is continuously passed through a normal heating device to heat and melt the overlapping portion of the wrap tape and bonded.Then, the wrap pipe is continuously melted by a crosshead extruder and the entire PE sheath is melted onto the wrap pipe. Extrude concentrically. Through these steps, the adhesive that is intermittently bonded to all the signal lines is thermally cured.

The wrap pipe coated with the molten PE sheath is then cooled through a cooling tank and wound up by a winder.If you adjust the running speed and cooling temperature of the wrap pipe and keep the sheath temperature at an appropriate temperature, the adhesive will The thermosetting reaction progresses and sufficient adhesion of the signal wires is obtained.

As explained above, according to Suikan, when forming a lamp pipe with a signal wire using wrap tape, the thermosetting adhesive intermittently discharged onto the inner wall surface of the wrap pipe of the signal wire will bond to the overlapped portion of the wrap tape. Heating for layer, bath melt PE
The heating during sheathing causes a thermosetting reaction, which intermittently bonds the communication line firmly; however, in this case, P
Since cooling is also performed on the E-sheath, in response to such cases, the sheath temperature, the running speed of the U-knob, the C-vee, and the cooling rate (temperature) are also taken into consideration, while thermosetting adhesive It is desirable that the agent be one that undergoes a thermosetting reaction at a relatively low temperature of 115 to 300°C, and that is capable of curing in a short period of time. According to this agent, the signal line can be firmly bonded to the inner wall surface intermittently. A wrap pipe for scraps is obtained.

[Brief explanation of the drawing]

The drawing is an explanatory diagram of a method for manufacturing a gas wrap pipe with a signal line, as follows: 1. Wrap tape, 2. Signal line, 3. Adhesive, discharge nozzle, 4. Adhesive, 5. Presser roll.

Claims (1)

[Claims] (1) In the method of manufacturing a lamp pipe by intermittently bonding all the signal lines to a metal wrap tape fully laminated with resin and molding the wrap tape, the signal lines are bonded to the front 61 wrap tape intermittently from the nozzle. A wrap for scraps with a signal line, which is characterized by adhering the signal line by discharging a thermosetting resin as an adhesive onto the surface of the wrap tape while it is being moved, and then thermosetting the adhesive by heating. Method of manufacturing pipes.