JPS58104191A - Method and device for laminating and electrodepositing fibrous material - Google Patents

Abstract

PURPOSE:To obtain moldings having diversified characteristics by electrodepositing aq. suspensions of fibrous materials in plural electrodepositing areas while passing said suspensions through said areas thereby laminating and forming the fibrous materials of different properties. CONSTITUTION:An electrodeposition tank 1 which has concentrical electrodes 2, 3 in the inside and is partitioned internally to plural areas by partition plates 8 is prepared. Said plates 8 permit the passage of the films electrodeposited and formed with fibrous materials havin electrophoresis charge on the surfaces of the inside electrodes 2. Suspensions of the fibrous materials having electrophoresis charge are introduced into said tank 1, and are laminated and electrodeposited on the surfaces of the electrodes 2. The resultant molded films are removed continuously from the upper part.

Description

DETAILED DESCRIPTION OF THE INVENTION Equipment for laminated electrodeposition molding of ζo*virFi fibrous material, aqueous WI4 of fibrous material with electrophoretic charge in 41
Regarding the method of producing a shaped article of fibrous material by electro-deposition method, it is possible to form a material with various characteristics by laminating and molding fibrous materials with different properties. Its purpose is to obtain things. - Fibrous substances with an electrophoretic charge 1 Protein fibrils such as collagen fibers 2 are prepared by electrodeposition, O casings used as sausage packaging materials 1 Surgical A% rackets O guts, meat capes for artificial skin It is molded into.

The electrodeposition method of the ζO invention is, for example, time l844-1565
An aqueous suspension of fibrous protein with an electrophoretic charge is introduced into a nine-electrodeposition bath equipped with at least one O cathode and at least one anode as disclosed in No. 4, and between the two electrodes. This is a modification of the method of accumulating the fibrous substance on one of the O electrode surfaces to form a molded article by applying an electric current to 8. In this case, if the aqueous suspension t) pn is adjusted to 6 or less K11l. , fibrous substances accumulate on the cathode, and the pH is higher than K
If 11 il is prepared, the fibrous material will accumulate on the anode surface.

In this invention, at least two types of fibrous substances are accumulated on the electrode surface, but it goes without saying that two types of fibrous substances can be used when two types of substances with different chemical structures are used, as well as two types of substances with the same chemical structure. However, it also means a case where two types of fibrous substances having different physical properties are used. For example, raw collagen*, mt
When aqueous suspensions are obtained by atomization, aqueous suspensions of fibrous substances with different physical properties can be obtained (depending on the pretreatment method used to make the fibers fine and the degree of pretreatment). By selecting at least two fibrous materials having different physical properties and laminating them by electrodeposition, the properties of the reconstituted product can be changed. By the electrolayer method, the Lumie electrophoretic charge storage is made up of at least two layers of fibrous material.

It is necessary to provide two or more electrodeposition regions and to supply each electrodeposition region with an aqueous suspension of fibrous material O having an electrophoretic charge.

This invention consists of a laminated molded product consisting of at least two layers. If the method is to carry out electrodeposited lamination molding while the process is being carried out, the apparatus is such that a pair of inner electrode surfaces are placed concentrically inside the inner electrode surface, and a fibrous material [electrodeposited] is formed on the upper part of the inner electrode surface. At this time, the electrodeposition region is divided into two or more regions with a partition plate that allows the membrane formed on the inner electrode surface to pass through, and fibers with electrophoretic charges are placed at the bottom of each region. It is also possible to provide an inlet for an aqueous suspension of a substance and an outlet at the top.

To explain with reference to the drawing, the figure shows the apparatus of the present invention, in which an inner electrode 2 and an outer mold 3t are provided concentrically inside an electrodeposition tank 10, and a diaphragm 11t1 and 14 are provided between the two electrodes. is supported by the diaphragm holder 5.

An aqueous suspension of a fibrous substance having an electrophoretic charge is introduced into the inner electrode *0 chamber 4FCI-1 separated by a diaphragm, and acidic or alkaline water is circulated into the outer electrode side O chamber 7. room 6
The interior of 0" is partitioned into an area of 2/2" or more with a donut-shaped partition plate 8" attached to the diaphragm holder 5. There is a space between the partition plate 8 and the inner electrode 2 to the extent that the electrodeposited film is not damaged. , preferably 5O-1000PC)
Each of these partitioned areas (S in the illustrated example) is supplied with a supply pipe 9 of an aqueous suspension of a fibrous substance having an electrophoretic charge.
．． φ′.

9" is provided. From the top □ part - to the overflow container 11 formed above the electrodeposition bath, from the middle chamber, from the discharge pipe 10' to the overflow container 11', and from the bottom part to the overflow container 11'. The liquid is allowed to overflow from the chamber through the discharge pipe 10' to each of the overflow containers 1 and ffc.The overflow containers 11' and 11' are set at the same level and can be finely adjusted so that the pressure difference between the upper and lower sides of the partition plate is as small as possible. #i The flow container ttm may also serve as a turbid liquid O storage tank.The liquid in the overflow containers 11゜tt' and 11' are supplied to pipes 18, 18', 18', and pumps 19, 19', and 19, respectively.
Through the inlet pipe 9.9', the electrodeposition region 4KIim1 is introduced into the chamber 4KIim1. "Also, to prevent the fibers from being oriented in only one direction and causing uneven electrodeposition, it is preferable to provide a stirrer in the electrodeposition area. When an agitator is provided, it is preferable to rotate K in the opposite direction. In the illustrated example, an agitator 12 driven by a motor 15 is provided in the upper chamber, and an agitator 12' driven by a motor 16 is provided in the lower chamber. ``It is provided.

As shown in the figure, 13 is a pipe for introducing an alkaline or acidic liquid into the chamber 7 on the outer electrode side, and 14 is a discharge pipe for the same. □ Jin's invention has the above-mentioned structure, but 1) the electrodeposition device of this invention is used to produce a fibrous material with an electrophoretic charge; 2) the production of a laminate molded product with zero Dan fibers; Implementation will be explained separately.

Collagen fibers have different properties such as fiber diameter and length depending on the processing method of the raw collagen, and the properties of the resulting molded product also vary depending on the properties of the collagen fibers before electrodeposition molding. . By laminating and molding a combination of 12 m or more of fibrous materials with different properties, it is possible to obtain a molded product that has properties that cannot be obtained from a single fibrous material.

[Brief explanation of the drawing]

The figure shows an embodiment of the invention. Code O Description 1@...electrodeposition bath, 2...Φ inner electrode, 5...outer electrode, 4...diaphragm, 5...diaphragm holder, 6 e 7
@ Book 11 room% 11... Overflow chamber section, 12"... Stirring blade, 14... Discharge pipe, 18... Pipe, 19... Hon 1 Agent Patent attorney (8107) Kiyoshi Sasaki (#1
or 3 people)

Claims (1)

[Scope of Claims] 1) Electrodeposition having a pair of concentric electrodes arranged inside, and dividing the inside into two or more O areas with a partition plate that allows a film formed on the inner electrode surface to pass through. The electrophoretic charge t in the tank
% fibrous substance O suspension is introduced from the lower part of each region and a DC voltage is applied between the two electrodes 4,
A method for laminated electrodeposition molding of a fibrous material having electrophoretic charges, characterized in that the fibrous material is continuously and laminatedly electrodeposited on an inner electrode surface, and the formed film is continuously taken out at the top. 2) A pair of inner and outer O electrodes are provided concentrically inside the electrodeposition tank, and a fibrous material with electrophoretic charge is electrodeposited on the electrode surface of the inner electrode, and is deposited continuously on the upper part of the electrodeposition area. It is divided into two or more regions by a partition plate that allows the membrane formed on the inner electrode surface to pass therethrough, and at the bottom of each region there is an inlet for an aqueous suspension 111 of an electrophoretic charge and a fibrous substance, and an upper A fibrous material or laminated electrodeposition molding apparatus having an electrophoretic charge, characterized in that a crease liquid O discharge port is provided in the holder, and the molded film is gradually drawn out from the top.