JPH01298293A - Papermaking unit for fibrous material with high specific gravity - Google Patents

Abstract

PURPOSE:To obtain a paperlike product with high-specific gravity fibrous product homogeneously dispersed by mixing a viscous liquid with high-specific gravity fiber and an adhesive, delivering the resultant mixture by a specified amount at a time and feeding, via a flow separation tank, to a log net. CONSTITUTION:A viscous liquid is prepared by dissolving a polymeric thickening agent in water in a tank 1, while a high-specific gravity fiber and a fibrous binder are dispersed and mixed in a second tank 2 to prepare a mixture. Thence, both the viscous liquid and the mixture are fed to a papermaking fluid feed tank 4 where the both are mixed by a high-speed agitator 4a followed by delivering the resultant mixture by a specified amount at a time with a bucket 4c to a flow separation tank 6. This tank 6, being provided with many tilt plates 6a-6c, uniformly discharges the papermaking fluid over the whole width of a long net 7. Suction dehydration, press dehydration and drying are carried out on the long nets 7, 8, 10.

Description

Detailed Description of the Invention [Object of the Invention] (Industrial Application Field) The present invention relates to a paper-making device that uniformly disperses fibrous substances with a high sedimentation rate and forms a sheet. It is used in the production of high-density fiber sheets that are mixed with other fibers to make paper.

(Prior art) As a prior art related to the present invention, Japanese Patent Application Laid-Open No. 62-4193
There is a No. 2 publication.

This is because when fillers and binders are mixed into the slurry-like raw material, unnecessary materials with light specific gravity are located in the upper layer of the slurry-like liquid and are made into paper. This method utilizes the light specific gravity of mixed substances to remove them.The inclined running section runs upward, and a suction chamber is installed on the bottom surface of the papermaking belt to supply excess slurry fiber raw material and reduce the amount other than the papermaking amount. Paper-making is performed while excess raw material flows out from the upper opening.

(Problem to be Solved by the Invention) However, the above-mentioned paper-making apparatus is intended for extremely light and thin wood fibers, and is not intended for fibers with high specific gravity such as short metal fibers and ceramic fibers (ρ = 2.0 to 9). 0), there is a problem in that it is difficult to make a homogeneously dispersed fiber sheet because the sedimentation rate of the fibers is high.

A technical object of the present invention is to provide a paper-making apparatus that can mix fibers with high specific gravity into a slurry-like raw material and homogeneously disperse the fibers to produce paper.

[Structure of the invention]

(Means for solving the problem) The technical means for solving the above technical problem are as follows. In other words, a raw material liquid is obtained by mixing a viscous liquid with high specific gravity fibers and an adhesive, and this is mixed and put into a fixed quantity supply tank for papermaking liquid, which is pumped out in fixed amounts with a bucket, and installed at the top of one end of the papermaking screen. An angle of 10° to 456° is installed inside the diverter tank.
The raw material liquid is supplied to three or more swash plates installed in the swash plate, and is uniformly flowed out over the hit of the paper net, and is applied to a felt-like belt having a suction box and a suction box for draining the sheet in a wet state. A high-density fiber sheet manufacturing device consisting of a device for stacking and conveying, and a device for drying the wet sheet placed on a wire conveying belt made of press rolls with a drying drum, drying and heat-sealing it with a synchronized hot roll press. It is.

(effect) The technical means works as follows.

The raw material liquid mixed with high-density fibers supplied to the paper-making liquid quantitative supply tank is pumped out in fixed amounts in buckets, poured into a gutter with a channel-shaped cross section (square shape), and further sent to the paper-making liquid distribution tank.
By passing through multiple swash plates, the fibers with high specific gravity and the raw material liquid are mixed uniformly throughout and flow into the paper towel, where the liquid is separated one by one to produce a homogeneously dispersed fiber sheet. It is.

(Example) Examples will be described below.

In Figures 1 to 3, ■ indicates viscous liquid adjustment to increase the viscosity of the aqueous solution using a polymeric viscous agent in order to slow down the sedimentation rate of high-density fibers in water and maintain as much suspension as possible. In the tank, la is a low speed stirrer to forcefully dissolve the sticky agent.

2 is a dispersion tank for dispersing and mixing high specific gravity fibers and a fibrous binder for adhering them, and there is a rapid stirring 411J2a.

4 is a fixed quantity supply tank for papermaking liquid, and 3a is a channel type open flow path to which a slurry liquid of high specific gravity fibers is supplied; There is a risk that the polymeric printing plate may be clogged due to accumulation, and 3b is a transport pipe for the polymer printing plate.

The dispersion liquid and viscous liquid sent at a constant rate are stirred to become a suspended state using a rapid stirrer 4a in the papermaking liquid quantitative supply tank 4 shown in Fig. 2, and the fibers are mixed in the tank. The buckets 4C are configured to rotate at a constant speed by a motor (not shown), and the buckets 4C are rotated at a constant speed by a motor (not shown).
is reinforced with.

The suspension A pumped out by the bucket 4C passes through a channel-type open flow path 5 having a receiver and is sent to a papermaking liquid distribution tank 6.

The flow divider tank 6 is for uniformly flowing the flow over the area of the papermaking net.If the flow is carried out directly from the passage 5 while maintaining the above condition, the width of the passage 5 becomes large, the flow velocity decreases, and some of the fibers are washed away. A good uniformly dispersed fiber sheet cannot be obtained due to the occurrence of lumps. For this purpose, the width of the passage 5 is made small to keep the flow velocity above a certain level. The suspension A sent to the papermaking liquid distribution tank 6 is expanded in the flow path by three or more inclined plates 5a, 5b, and 5c provided at an angle of inclination of 10° to 40°, and then passed through the papermaking liquid distribution tank 6.
It can be cast on a hit.

The suspension A flowing out from the paper-making liquid distribution tank 6 is deposited uniformly on the Fourdrinier 7, and is suctioned and filtered by the suction box 7a to thoroughly drain the water.

Next, the press roll 9 is sent to a conveyance zone, moved to a felt belt 8, passed through a wire conveyance belt 10, thoroughly dried in a steam drying drum 11, finished in a hot roll press 12, and passed through a winder to a high specific gravity. A fiber sheet is obtained.

In order to facilitate the movement from the wire conveyor belt 10 to the drying drum, if the wire conveyor belt IO is coated with or dipped in a mold release agent such as silicone, the wire conveyor belt 10 can release the high-density fiber sheet better than the wire conveyor belt 10. It is what it is.

〔Effect of the invention〕

The present invention has the following effects. In other words, (1) the suspension can be thoroughly stirred and mixed uniformly in the liquid quantitative supply tank during papermaking, and high specific gravity fibers are Even if mixed, it will be homogenized.

(2) Special paper containing leaves, bamboo leaves, gold leaf, etc. can be easily manufactured using this device.

(3) It is also possible to manufacture paper using raw materials with large differences in specific gravity, such as pulp and stainless steel fibers, and carbon fibers and aluminum flakes.

[Brief explanation of the drawing]

Fig. 1 is an overall explanatory diagram of this embodiment, Fig. 2 is a quantitative supply tank for papermaking liquid, (a) is a side front view, (b) is a sectional view, and
The figure is a cross-sectional view of a papermaking liquid distribution tank. 4... Paper-making liquid quantitative supply tank. 4c...Bucket. 6... Paper-making liquid distribution tank. 5a, 5b, 6cm--swash plate. A...Ze, suspension and high specific gravity fiber sheet.

Claims (1)

[Claims] In the papermaking device that manufactures sheets, the suspension passes through a conveyance zone consisting of a papermaking section, a conveyor belt, and a drying drum, where the viscous liquid and high-density fibers are mixed with an adhesive, and then transferred to a quantitative feed tank for the papermaking liquid. A fixed amount is pumped out in a bucket, poured into a papermaking liquid distribution tank with a plurality of swash plates installed at the top of one end of the fourdrinier, and then flowed out uniformly over the entire width of the fourdrinier, into a wire mesh with a suction box. A high-density fiber sheet manufacturing device that manufactures high-density fiber sheets through a conveyance zone consisting of press rolls and drying rolls.