JPH0114701Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a heat treatment cylinder for bonding nonwoven fabric fibers.

[Conventional technology]

There are two types of cylinders for web adhesive heat treatment: one has numerous through holes all around the cylinder body;
In some cases, a large number of bent plates bent in a zigzag pattern are arranged in parallel to form a cylinder, and a hexagonal hole is provided.

[Problem that the invention attempts to solve]

The aperture ratio when a through hole is provided in the cylindrical body is about 40%, and the aperture ratio when a bent plate is used is only slightly larger than the above-mentioned through hole.

With such an aperture ratio, the entire surface of the web receives hot air for even adhesion, but the back side (the side that contacts the surface of the cylinder) does not come into contact with the part without holes or the bending plate. As the number of bonded parts increases, the passage of hot air is obstructed, resulting in the formation of bonded parts that are affected by heat and non-bonded parts that are not affected by heat.

[Means for solving problems]

In order to solve the above problems, this invention has a plurality of annular plates arranged in parallel so as to maintain a predetermined interval through the pieces, and both ends are engaged with the side ring, and a hole is penetrated through the pieces and the annular plate. This cylinder for heat treatment is made of a non-woven fabric and includes a tightening rod having a cylindrical shape, and a notch is provided on the outer periphery of the annular plate to increase the aperture ratio.

[Effect]

While driving the cylinder in one direction, the web supplied to the upper part of the outer peripheral surface of the cylinder is circumscribed to a predetermined range of the outer peripheral surface of the cylinder, and then released and taken out from the lower part of the outer peripheral surface of the cylinder.

Hot air is blown onto the surface of the web circumscribing the cylinder to bond the fibers, and the notch drastically reduces the contact between the annular plate and the back side of the web, making it easier for the fibers on the back side of the web to receive the hot air. Improves adhesion efficiency on the back side.

〔Example〕

FIG. 1 shows a cylinder A for heat treating a nonwoven web.

The above cylinder A has a pair of left and right side rings 1, 1' as shown in FIGS. 1 to 4,
A large number of annular plates 3 are arranged in parallel so as to maintain a predetermined distance between the side rings 1 and 1' through pieces 2, and both ends of the annular plates 3 are engaged with the side rings 1 and 1'. It consists of a tightening rod 4 that passes through an annular plate 3.

A large number of the above-mentioned pieces 2 are arranged at predetermined intervals all around the annular plate 3, and one of the side rings 1
The tightening rod 4 is passed through the through hole 5 of each piece 2 and the corresponding through hole 6 of the annular plate 3, and the through hole (not shown) of the remaining one side ring 1', and the screw portion 7 at the end of the tightening rod 4 is inserted. A nut 8 is screwed in to pull both side rings 1 and 1' together.

Also, side rings 1, 1', piece 2,
A through hole 9 that coincides with the annular plate 3 is provided, and a rod 10 is passed through the through hole 9 to stop the piece 2 from rotating.

Furthermore, a notch 11 is provided on the outer peripheral edge of each annular plate 3 to increase the aperture ratio.

The above-mentioned notches 11 are formed in large numbers around the entire circumference, and as shown in FIG.
By providing the notches 11, the notches 11 can be arranged in a staggered manner as shown in FIG.

In addition, inside the cylinder A, the cylinder A
The supplied hot air flows into the outer periphery of the cylinder A, and the hot air is discharged from one pipe 12 that supports the cylinder A.

〔effect〕

As described above, according to the cylinder for heat treatment of nonwoven fabric according to this invention, since a large number of notches are provided on the outer periphery of a large number of parallel annular plates, the aperture ratio can be significantly increased.

Therefore, contact between the back surface of the web and the outer periphery of the annular plate is extremely reduced, making the back surface of the web more susceptible to the effects of heat, eliminating uneven adhesion of fibers, and providing a good nonwoven fabric.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a cylinder for heat treatment of nonwoven fabrics according to the invention, Fig. 2 is an enlarged longitudinal sectional front view showing the main parts of the same, Fig. 3 is a longitudinal sectional side view thereof, and Fig. 4 is a plan view thereof. . A...Cylinder, 1,1'...Side ring,
2... Piece, 3... Annular plate, 4... Tightening rod,
5...Threaded hole, 6...Threaded hole, 7...Threaded part, 8...
Nut, 9...through hole, 10...rod, 11...notch.

Claims (1)

[Scope of utility model registration request] A cylinder for heat treatment of non-woven fabric, comprising a plurality of annular plates arranged in parallel so as to maintain a predetermined spacing between the pieces, and a tightening rod having both ends engaged with a side ring and penetrating the pieces and the annular plate. A cylinder for heat treatment of nonwoven fabric, characterized in that a notch is provided on the outer peripheral edge of the annular plate to increase the aperture ratio.