JPS6021615B2 - Processing method for film-like materials - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for treating a film-like material, and more particularly to a method of treating a film-like material with a gaseous substance among deleterious or highly toxic substances.

Usually, in order to improve the surface properties of the film-like material or to impart ion exchange properties to the film-like material, it is necessary to otherwise treat film-like materials such as plastic films and sheets.

For example, to improve leakage of polypropylene film,
When at least the surface of the film is chlorosulfonated, the ion exchange capacity at least near the surface of the ion exchange membrane is reduced, the transference number of opposing ions is reduced, or ions with a lower charge are selectively used with respect to similar ions. This is the case, for example, when it is treated with phosphorus pentachloride vapor to make it permeable or to obtain it as an intermediate product for further improvement. The characteristics of chemical treatment for film-like materials are:
Each piece is a solid with an extremely wide surface, and it is difficult to react uniformly to the surface or inside.

Normally, a large reactor is required to uniformly chemically treat a large area of film-like material, and therefore an extremely large amount of reactants must be used.

Therefore, when a deleterious substance or a poisonous substance is used as a reactant, it is dangerous due to an increase in the amount of the substance handled and is also subject to various restrictions, so a simpler method has been desired. Therefore, the present invention provides a method of reacting extremely uniformly even in a long film-like material by continuously reacting.

The present invention will be explained below. The present invention is a method for continuously reacting a gaseous reactant, particularly a deleterious substance or a poisonous substance, to a film-like material. Furthermore, using a reaction apparatus, the reaction chamber is composed of a third chamber filled with an inert gas such as a lotus, and a pair of seal rolls are provided at the inlet of the first chamber, the outlet of the third chamber, and a pair of seal rolls at the boundary of each chamber. A gaseous reactant is introduced into the second chamber, and the film-like material is reacted while being sequentially moved from the first chamber toward the third chamber.

Of course, if a temperature above room temperature is required for the reaction, the reaction chamber may be equipped with a heating means, and the first chamber and/or the third chamber may also be equipped with a heating means. It is also convenient to circulate the gas in each chamber between a holder and a generator outside the room. Furthermore, the first and third chambers are sealed chambers that prevent harmful or poisonous substances in the reaction chamber located in the center from leaking outside, so in addition to the inert gas filling these chambers, the reaction It is also effective to have a gas that reacts with indoor gas and becomes harmless.

That is, for example, when chlorine is used as a reactant, the first and third chambers may be filled with nitrogen gas containing a small amount of ammonia. Such reactive gases can be easily selected by those skilled in the art based on the relationship with the reactants in the second chamber. Furthermore, the interior of the first chamber and/or the third chamber may be made multilayered, and each boundary may be provided with a sealing roll or other sealing means to prevent leakage of the reactant to the outside, if necessary. . The drawings will be explained below.

FIG. 1 is a side view of the apparatus used in the present invention.

1 is a first chamber, 2 is a reaction chamber, and 3 is a third chamber, and the film-like material 4 advances from the first chamber to the second chamber and then to the third chamber as shown by the arrows.

Normally, the first chamber inlet roll 5 and the third chamber outlet roll 6 are preferably made of relatively soft rubber. It also adheres well to the film to prevent gas leakage. Further, it is desirable that the rolls 7 and 8 between the respective chambers be constructed of materials that are durable against gas reactants. Furthermore, by attaching a roll cover 9 to each roll and configuring the roll to slide on the inside of the cover, gas may leak from between the roll and the partition wall of each chamber. It is also effective to prevent Furthermore, by attaching a tailor roll or a child heating roll 10 in the first chamber, it can be useful for smoothing the film surface or performing uniform child heating. FIG. 2 is a plan view of an example of an apparatus used in the present invention.

The film-like material 4 is sent to a first chamber, a second chamber, and a third chamber in this order by, for example, drive rolls 11 and 12. The gas in the first and third chambers is first introduced into the first chamber through a pipe 201 from the gas holder 13, then from the first chamber to the third chamber through a pipe 21, and then through 22 into the gas washer lacquerware 1.
4, the reactants leaking out of the reaction chamber are removed and circulated through the holder through the pipe 23 to the first chamber again. Of course, these circulations may be reversed, or means for heating and humidifying the gas may be added. Alternatively, the gas in the first chamber may be heated and the gas in the third chamber may be circulated momentarily to cool it. Further, a reactant is supplied to the reaction chamber shown in FIG. 2 through a pipe 24 from a toxic gas holder 15, and is circulated through a pipe 25. If the reactant is not in a gaseous state at room temperature, the holder may be heated to evaporate or sublimate the reactant into a gaseous state, and the gaseous state may be supplied to the reaction chamber. In some cases, an inert gas may be included as a carrier gas in order to uniformly supply the reactants into the reaction chamber. As mentioned above, the reaction conditions can be arbitrarily changed by appropriately controlling the temperature inside the reaction chamber and controlling the moving speed of the film.

Furthermore, if it is desired to process only one side of the film, it is preferable to supply two films in a stacked manner. To further improve the integrity, both ends of the two films may be adhered with adhesive tape or sewn together using a sewing machine, as the case may be.
Of course, even if there is only one film, substantially only one side can be processed by placing the back side of the film in contact with the bottom of the reaction chamber. Examples of implementing the present invention will be shown below.

Example 1 Using an apparatus approximately as shown in FIG. 1 (but without the roll 10), ethane dichloride vapor was introduced into the first chamber, nitrogen was introduced into the third chamber, and chlorine and sulfur dioxide gas was introduced into the second chamber at 100°C. 1:1
(mole) for circulating supply.

The reaction time for polypropylene film is 30 minutes using this device.
I moved it slowly so that it took about a minute. The resulting printability was improved. Example 2 Using a perfluorinated ion exchange membrane having a sulfone group in its side chain as an ion exchange group, phosphorus pentachloride was heated and sublimated in the reactant holder 15 in Fig. 2, and reacted for 1 hour at 160 qo using nitrogen as a carrier gas. .

(Both the first and third chambers are flushed with nitrogen, and the first chamber is
qC, the third chamber is approximately 100oo) When the obtained ion exchange membrane was dyed with a basic dye, the surface was hardly stained, indicating that the ion exchange groups on the surface had been converted to other functional groups. . A portion of this film was cut out, heated in a caustic soda aqueous solution, and then subjected to a dyeing test again, and the surface was uniformly colored. Therefore, it is understood that the surface of the ion exchange membrane treated with phosphorus pentachloride had chlorsulfone groups.

[Brief explanation of the drawing]

FIG. 1 is a side view of an example of the apparatus used in the present invention, and FIG. 2 is a plan view of the same. In the figure, 1, 2, and 3 represent chambers, 4 is a film-like material, and 5
, 6, 7 and 8 are a pair of seal rolls, 1
1 and 12 are drive rolls. 13 is an inert gas holder, 14 is a gas scrubber, and 15 is a reactant holder. Outside/Figure Z diagram

Claims (1)

[Claims] 1. A method for continuously reacting a gaseous reactant with a film-like material, comprising a first chamber filled with an inert gas, a reaction chamber (second chamber) connected to the first chamber, and a first chamber filled with an inert gas. It consists of three chambers, a third chamber filled with inert gas and connected to the reaction chamber, and is equipped with a pair of seal rolls at the inlet of the first chamber, the outlet of the third chamber, and the boundary between each chamber, and the rolls are equipped with a roll cover. A gaseous reactant is introduced into the second chamber using a reaction device configured such that a roll slides on the inside of the cover, and the film-like material is sequentially moved from the first chamber to the third chamber. A method for processing a film-like material, characterized in that the reaction is carried out while the reaction is being carried out. 2. The method according to claim 1, wherein the gaseous reactant is a deleterious substance or a poisonous substance.