JPH0124156Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a heat treatment device for nonwoven fabric that adheres webs.

[Conventional technology]

Heat treatment of the non-woven fabric is carried out by supplying a web to the upper part of the outer periphery of a cylinder that is being driven, and bringing it closer to a predetermined range of the outer periphery of the cylinder by sandwiching it between a net conveyor with the carrier side parallel to the inside and outside. Fibers are bonded by blowing hot air and drawing the hot air into the cylinder, and then taken out from the lower part of the outer peripheral surface of the cylinder.

[Problem to be solved by the invention] Since the suction of hot air cannot be adjusted, the temperature cannot be gradually increased to obtain a soft product, or the temperature cannot be rapidly increased to obtain a hard product. It was hot.

[Means for solving problems]

In order to solve the above problems, this invention has a shielding plate that stops suction from outside the cover inside the cylinder, and a partition plate that divides the area close to the web into two upper and lower chambers in a stationary state. A damper is provided in each of the suction hot air discharge passages connected to one end of the upper and lower chambers divided by the partition plate.

[Effect]

The amount of hot air sucked and discharged is adjusted by operating the damper.

〔Example〕

In the figure, 1 is a porous cylinder installed in a cover 2 and driven in one direction, and the web A fed to the upper outer circumference of this cylinder 1 is transferred to a net conveyor 3 whose carrier sides are parallel to each other on the inside and outside. .

Further, hot air is blown onto the web A placed close to the cylinder 1 from the outlet 6 of the hot air supply path, and the hot air is sucked into the cylinder 1 to bond the fibers.

Further, inside the cylinder 1, a shielding plate 7 that stops suction from outside the cover 2, and a partitioning plate 8 that partitions the proximity range of the web A into two upper and lower chambers are provided in a stationary state. , this section board 8
Dampers 11 and 12 are provided in the middle of hot air suction and discharge passages 9' and 10', respectively, which are connected to one end of two upper and lower chambers 9 and 10 separated by.

As shown in the figure, upper and lower arcuate plates 13 are installed at both ends of the cylinder 1 between the inner periphery of the cylinder 1 and the outer peripheries of the two chambers 9 and 10, and the arcuate plates 13 Arms 14 protruding inward from each other are attached to rods 17 that move forward and backward through fittings 15 and threaded portions 16 of a male thread and a female thread, respectively, and the end engaging portions 1 of the rods 17
By moving the arcuate plate 13 together with the rod 17 using a handle or the like that engages with the rod 17 to prevent hot air from being sucked into the cylinder 1 from the outside of the side edge of the web A, the hot air can be drawn into the web A. It can be made to work effectively.

In the figure, reference numeral 19 denotes an opening/closing lid, and the engaging portion 18 is rotated by opening the opening/closing lid 19. 20 is rod 1
This is the guide member No. 7.

〔effect〕

As described above, according to the heat treatment apparatus for nonwoven fabrics according to the present invention, a damper is provided in each of the suction hot air discharge passages connected to one end of the upper and lower chambers divided by the partition plate, and the dampers are rotated. Since the suction and discharge of hot air is adjusted by
It is possible to gradually increase the temperature of the hot air acting on the web to obtain a stable soft product, or to rapidly increase the temperature to obtain a hard product.

It is also possible to adjust the amount of hot air sucked in depending on the thickness of the web and to change the temperature for each section.

Furthermore, in the case of composite fibers, good adhesion can be achieved by staggering the time of thermal change of the fibers.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional front view of a heat treatment apparatus according to this invention, and FIG. 2 is a longitudinal sectional side view thereof. A... Web, 1... Cylinder, 2... Cover, 3, 4... Net conveyor, 5... Guide roll, 6... Air outlet, 7... Shielding plate, 8... Section plate, 9, 10... Upper and lower two chambers, 9', 10'... Hot air suction and discharge passage, 11, 12... Damper, 13...
...Arc-shaped plate, 14...Arm, 15...Mounting bracket, 16...Threaded part, 17...Rod, 18...
Engagement part.

Claims (1)

[Scope of utility model registration request] The web supplied to the upper part of the outer periphery of the cylinder rotating inside the cover is sandwiched between two running inner and outer net conveyors to bring it close to a predetermined range of the outer periphery of the cylinder, and the hot air blown from the hot air supply path to the web in the vicinity is transferred to the cylinder. In a nonwoven fabric heat treatment apparatus, the web is sucked into the cylinder through the porous peripheral wall of the cylinder, and is discharged from the end to bond the fibers, and then the web is taken out from the lower part of the outer periphery of the cylinder. A shielding plate that stops suction and a partition plate that divides the vicinity of the web into two upper and lower chambers are installed in a stationary state, and a suction hot air discharger is connected to one end of the upper and lower two chambers divided by the partition plate. A nonwoven fabric heat treatment device characterized by having a damper installed in each path.