JPS61193827A - Method of coating inner wall surface of cylindrical film with liquid - Google Patents

Abstract

PURPOSE:To make it possible to perform smooth and favorable coating, by enclosing a treating liquid into a cylindrical film, and allowing a liquid successively to adhere to the inner wall surface of the cylindrical film while transferring the cylindrical film to a take-up section. CONSTITUTION:A hole having a suitable size is formed in a part 12a of a cylindrical film 12, which part 12a will be successively transferred to be taken up onto a take-up section 10, and when air 14 is blown from the hole into the cylindrical film 12 to expand the film 12 and the section having the hole is passed through second pinch rolls 9, the air is enclosed in the part 12a of the cylindrical film 12, so that the expanded sate is kept. Then, a hole is again formed at a part positioned higher than the part 12a, and a prescribed amount of a treating liquid 13 is introduced into the film through the hole. Under this state,when an inflation molding machine 1 is operated, since the inner wall surface of the cylindrical film 12 is in contact with the treating liquid 13 while the cylindrical film 12 is passing through the treating liquid 13, the liquid 13 adheres to all the inner wall surface of the film 12, and this film is delivered from the second pinch rolls 9 and is taken up onto the take-up section 10.

Description

Detailed Description of the Invention (Field of Tumor Application) The present invention relates to liquid treatment of the inner wall surface of a cylindrical film manufactured by an inflation molding machine, in which the inner wall surface of a cylindrical film made of synthetic resin is treated with a treatment agent. For more information on how to
During the process of continuously winding up a cylindrical film that is continuously manufactured by an inflation molding machine onto a winding section, a tube in which a treated film is continuously and visually layered on the inner wall surface of the cylindrical film. The present invention relates to a method for coating the inner wall surface of a film.

(Conventional technology) Generally, a blown film (1kK film) is manufactured by the following method. In other words, the extruder of the inflation molding machine is attached to a die with an annular groove at the exit, extrudes the raw material (bathed plastic) into a cylinder, and this extruded cylinder is placed above the die. Pass it through the temporary guide and place it between the rollers placed above it, and before the cylindrical body cools and solidifies, air is injected into the cylindrical body to inflate it to the desired diameter. After that, the injection of air is stopped, and in this state, the raw material is continuously extruded from the die to form a cylindrical film having a predetermined diameter and thickness, and this film is transferred to the winding section side using the pinch roll. It is fed out and wound up continuously.

In this way, as a force ratio for coating the inner wall surface of the cylindrical film with liquid collection and other coatings, the rice is transferred into the crawling film between the vintilol and the die.
The desired treated powder is extruded from the above raw material 111! + A coating method has been trialled in which the film is sprayed to form a layer on the inner wall surface of the film.

(Problem that Kabuto Aki attempts to resolve) According to the above-mentioned prior art, coating the same image plane of the film with a scatterer is a problem.

However, this method of using rice has the following problems. In other words, the air t (pressure) in the cylindrical film between the roll and the die determines the diameter and wall thickness of the molded product (cylindrical film). It is necessary to keep it constant at all times, but as mentioned above, in the conventional technology, the liquid is sprayed into the cylindrical film, so the air pressure inside the cylindrical film gradually increases, and as a result, the film becomes hotter than a predetermined level. It expands and becomes banked. Therefore, in the conventional method of processing liquid by spouting it into the film, the same air pressure applied to the cylindrical film must be constantly applied to the film (externally). Because it has to be 91 cones and has a narrow construction, is it actually good? Therefore, it is difficult to maintain the air pressure within the film at all times using the above method.

Reimei Motomoto aims to provide a liquid coating treatment method that can smoothly coat the inner wall surface of a cylindrical film with a treatment liquid before removing the cylindrical film manufactured by an inflation molding machine. It is something to do.

(Means for Solving the Problems) As an additional step to solving the above-mentioned problems, the present invention provides that after feeding the cylindrical film from the first vinyl roll to the winding section side,
A processing liquid is sealed in this cylindrical film, and while the cylindrical film is being transferred to the winding side m, the liquid is sequentially and continuously applied to the inner wall surface of the film for coating processing.

That is, in the present invention, during the process of continuously winding a cylindrical film into a winding section that is continuously produced by an inflation molding machine, a vinyl roll disposed in a film transfer labyrinth and an upper part of the molding machine are used. The body is enclosed in the above-mentioned cylindrical film between the 3-1 pinch rolls arranged in the 3-1 pinch roll, and is transferred into the above-mentioned cylindrical film to the upper farm side. The above-mentioned treatment liquid is applied continuously and intermittently to the 4th area, which is similar to t%.

(Sakukawa) According to the above-mentioned technical means, while the inner wall of the cylindrical film passes through a point where the processing liquid is sealed, the entire inner wall of the film is in contact with the liquid as it is transported backwards. .

Therefore, the processing liquid is automatically and continuously applied to the inner wall surface of the cylindrical film to coat it.

(Medicine example) Embodiments of the present invention will be described below with reference to the drawings.

, 1-7 show a practical example of the present invention, 1 shows an inflation molding machine, 2 shows an extruder with a hopper 3, 4 has an annular hole, and the outlet of the extruder The die mounted upward on the side, 5 is a cooling air ring provided at the top of the die 4, and is formed so that air supplied from a compressor (not shown) is drawn out from the air ring 5.
ing. 6 is a guide plate located in the rough position in the collection area of Dai 4, and guide & 6 is the liquid 6a of 2nd group.
, 6b are arranged opposite each other in a mountain shape.

7 is a pin roll placed on the top of the guide plate 6;
The Vinci roll 7 has two rolls 7a and 7b arranged in close contact with each other and rotated in opposite directions as shown by arrows in Fig. 317 by a motor (not shown) or the like. 8
9 is a guide roll, 9 is a 2-inch pinch roll, and the 2-pin pinch roll 9 has two rolls 9a and 9b placed close together and opposed to each other, and rotated in opposite directions as shown by the arrows in the figure. It is configured as follows. IO indicates a winding section for surrounding the product.

Inflation molding used for ritual rituals of the present invention! 1 is constructed as described above, and can use a general-purpose one.

Next, the liquid coating treatment method of the present invention will be explained.

When the extruder 2 is driven, the raw material in the hopper 3 is melted in a heating bath and is continuously extruded from the die 4 in an m-shaped form. Therefore, the end of this extruded cylindrical body 11 is inserted between the rolls 7G and 7b of the pinch roll/I/7, and is pulled (sent out) by the drive of the pinch roll 7. The end of 11 is the kite roll 8 through the spear 2
The corporation is established between the rolls 9α and 9b of the pinch roll 9. As a result, the extruded cylindrical body becomes a #-like shape and is continuously pulled out to the lower part of the second pinch roll 9.

Therefore, in the above state, pressurized air is introduced into the cylindrical body 11 between the olvinti roll 7 and the die 4 from a pressure air supply source (not shown) (the same compressor as the air ring 5 can be used) (the air introduction hole is When the cylindrical body 11 is not solidified and the upper end of the cylindrical body 11 is closed by the TL pinch roll, it expands and becomes thin. The film becomes a cylindrical film 12, which is protected by the cooling air blown from the air ring 5, and then solidified 31. Then, the cylindrical film 12
The supply of air to the inside of the cylindrical body 11 is stopped at the time when the diameter is reflected to a predetermined diameter. As a result, the cylindrical film 12 is filled with air at a working pressure, so that the cylindrical body 11 that is extruded from the die 4 is expanded in a predetermined direction by the action of the air pressure, and is shaped into a WR shape. Became film L2, from 21 Vinci Roll 7)! L @ is included, this is Volume Mi1.
A general-purpose cylindrical film can be obtained by winding it around a decorative film.

Firstly, the present invention is to coat the inner wall surface of the planar film 12 with a liquid before winding the cylindrical film 12 packed in the above manner into the winding box lO.
Let me explain. In the cough strength example, the portion 1 of the cylindrical film 12 in the darkness between the pinch roll 9 and the guide roll 8
A chemical solution or other desired processing liquid 13 is sealed in 2a. Then, this liquid 13 is sealed in the following manner, for example. That is, the above-mentioned portion 12g of the cylindrical film 12 (this portion is sequentially transferred and wound up to the winding section IO).

) K First, make a hole of an appropriate size, and blow 14'lk of air into the cylindrical film lz through this hole to inflate it excessively, and this part (the large open part wI) will become a 1.2 inch roll. 9, air is sealed in the above-mentioned portion 1 of the cylindrical film 12, and the swollen and sticky state is maintained as shown in the figure.

Therefore, next, open the tongue in the upper part of the above part 12α,
Insert the processing liquid 13 into the holed Fgr target film, or use a large 1!E syringe to inject the processing liquid 13 into the l"J & without making a hole as described above. The processing liquid 13 is poured into the above part [2α] of the film 12 from the trap. As a result, when the hole or the tag part of the ejector passes through the second vinci roll 9 (a certain amount of the liquid 13 is released to the outside during this passage), the guide roll 8 and the A12 vinci roll 9 pass through. A processing liquid 13 is sealed in a portion 12α of the cylindrical film 12 between the two.

Therefore, when the inflation molding machine 1 is operated in this state, while the cylindrical film 12 passes through the processing liquid 13, the inner wall aIl of the film 12 is in contact with the liquid 13, so that the liquid 13 is transferred to the inner wall surface of the film 12. is added to all the songs, and in that state is wound up on the winding mlO sent out from the second pinch roll 9.

Through the above process, a cylindrical film whose inner wall surface is coated with the fM liquid 13 is obtained.

Next, Figure 112 shows an example of the 2-year failure of the sword.

In this example, the device used to implement the method of the 71 skill example (inflation molding + fit) is used.
In addition, two oylbaelbbs were installed in a canister and placed opposite each other, and the spears were configured so that they were turned upside down like #4J) P3 pinch low A/% and 73 pinch low. Guide rolls lb and r? are disposed in the transfer path between the roll 15 and the roller 9. The other configuration of the device is the same as that of the above-mentioned J'l embodiment.
In FIG. 2, parts given the same reference numerals as in FIG. 77 indicate the same constituent parts.

Also, in the second embodiment, a desired amount of processing liquid 13 is sealed together with air 14 in the portion 12α of the cylindrical film 120 between the pinch roll 9 and the guide roll 8, as in the previous example. This liquid 13 is then deposited on the inner wall surface of the cylindrical film 12.

Therefore, in the second embodiment, the third vinyl roll 1
A portion 121) of the cylindrical film 12 between the guide roll 8 and the guide roll 8 is filled with a desired amount of air 14a, so that the film 12 is allowed to flow in a straight line to transport the S. It is designed to spray heat lice every minute.

According to the method of the embodiment, lr'L is etiquette by the above-mentioned heat while passing the same figure of a cylindrical film with several layers of powder particles 13 between a kite roll it) and a spear 3 vinyl roll 15. It's a monkey who lets you do something. Further, according to the example,
The inner wall surface of the film 12 can be subjected to a secondary treatment by enclosing the treated body (the liquid 13 is mixed with the liquid 13) together with the air l into the portion tJ) of the film I2.

(Effect) According to the present invention, the inner wall LfiwoF9 of the cylindrical film
The coating treatment can be carried out smoothly and efficiently using the violet treatment liquid.

[Brief explanation of the drawing]

3 and 7 are schematic side views showing a contradictory example of the liquid coating treatment method for the inner wall surface of a cylindrical film according to the present invention, 31
FIG. 2 is a schematic side view showing an example of two spears. ■・・・・・・Inflation molding machine, 2・・・・・・
・Extruder, 3...Hopper, 4...Die, b...Air ring, b...Kite board, 7...371 Vinci roll, 9...
...Sai2 Vinciroll, ILI...Makitori Miyako,
11...frJ-shaped body, L2...tubular film, primary...part, 13...
・Processing liquid, lb...3 years old Vintyroll. Patent applicant Chiyoda Chemical Co., Ltd. Procedural amendment V! (Automatic April 17, 1985 Commissioner of the Japan Patent Office Shiga Aji Tono τha 1, Incident display 脣面昭6 (J-34867 No. 2, Name of the invention Inner wall surface liquid of cylindrical film; -Ting treatment method 3 , Relationship with the case of the person making the amendment Patent Applicant Address 9-32-1 Kameido, Koto-ku, Tokyo Name Chiyoda Chemical Co., Ltd. Representative Yoshi 1) - Sei 4, Agent 5 Address Sumida-ku, Tokyo Fastening thread 2-10-7 Hata pill 201 5. Drawing subject to correction 6. Contents of correction

Claims (1)

[Claims] (1) During the process of continuously winding the cylindrical film produced by the inflation molding machine into the winding section, a pinch roll disposed in the film transport path and a A processing liquid is sealed in the cylindrical film between the provided first pinch rolls, and the processing liquid is continuously and sequentially deposited on the inner wall surface of the cylindrical film that is transferred to the winding section side. A method for coating the inner wall of a cylindrical film with a liquid.