JPS63102922A - Apparatus for preparing laminate film - Google Patents

Abstract

PURPOSE:To adjust surely a mixing ratio of a main component and a hardner and to attempt to obtain a stable supply, by providing specific pumps and flow meters between tanks for the main component and the hardner and a mixer of these two components. CONSTITUTION:Actual flow quantities of a main component 14 and a hardner 15 are always watched by means of flow meters 22 and 22 by placing vol. type rotative pump 19 and 20 and flow meters 22 and 23 respectively between a main component tank 17 and a hardner tank 18 and a mixer 16. By consituting each each supplying pump 19 and 20 with a vol. type rotative pump, no fluctuation occurs in the extruded flow quantity and the actual flow quantities between each pump 19 and 20 and the mixer 16 can be surely detected by means of the flow meters 22 and 22. When deviation occurs in the mixing ratio, the rotating speed of the main component pump 19 or the hardner pump 20 is changed by operating a speed changing mechanism 24 to adjust the extrusion output and to return the mixing ratio to a constant ratio.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a laminated film manufacturing apparatus that
Regarding the film lamination using liquid adhesive, this is an improved system for feeding the main agent and curing agent.

[Conventional technology]

In this type of equipment, the main agent and curing agent stored in separate tanks are pumped and mixed together.

A laminate film is manufactured by applying the mixture to one film to be laminated using, for example, a roll coater, overlaying another film thereon, and pressing the film with a roll.

A manufacturing apparatus for such a laminate film is disclosed in, for example, Japanese Patent Application Laid-open No. 57-15865 and Japanese Patent Publication No. 60-51135.
It is known in the publication No.

[Problem that the invention seeks to solve]

Two-component adhesives differ depending on the mixing ratio of the main agent and curing agent.
Differences occur in adhesive strength, viscosity, curing time, etc., and differences in these properties greatly affect web feed speed and product quality. Therefore, after starting the production operation, it is necessary to maintain a stable mixing ratio of the base resin and the curing agent.

In this regard, conventionally there was no means for confirming an appropriate mixing ratio. Therefore, they had no choice but to rely on the accuracy and reliability of the metering pumps that delivered the base agent and curing agent. It is possible to determine whether the mixing ratio is good or not by inspecting the laminated film in the product state, but this confirmation work must be done after the adhesive has completely cured after a considerable period of time (for example, 48 hours) after the film has been bonded. There was some frustration that the results of the 1st judgment could not be reflected on the production line because it could not be carried out. Of course, any defective laminate film produced during that time had no choice but to be discarded.

Plunger pumps, which have a stable discharge rate, have traditionally been considered to be superior as metering pumps for delivering the base resin and curing agent. However, changes in flow path resistance over time and small leaks occur in the delivery route after the pump.

In some cases, the mixing ratio of the main agent and curing agent may gradually change due to an abnormality in the pump itself or a time lag in the valve.
Since uneven distribution may occur, it is desirable to be able to manage the mixing ratio with higher reliability.

Plunger pumps, which rely on a constant discharge volume to maintain the mixing ratio at a constant rate, have the following problems: 1 If the mixing ratio changes within the allowable range due to any of the factors mentioned above, The problem was that the mixing ratio could be returned to a constant ratio by changing the pump discharge amount, resulting in a large economic loss.

As mentioned above, in production equipment for laminating films that use two-component adhesives, maintaining the mixing ratio of the main agent and curing agent at a constant constant rate is an important issue in production management. A solution was desired.

[Purpose of the invention]

The present invention solves the above problems, and
The mixing ratio of the two-component adhesive can be checked continuously even after the production operation of the laminated film has started.
The object of the present invention is to obtain a laminated film manufacturing device that can be adjusted as necessary.

Another object of the present invention is that even if an abnormality occurs in the main agent and curing agent feeding system, the mixing ratio can be restored to its normal state without stopping the production line, thereby reducing the economical effects caused by abnormalities in the feeding system. The aim is to minimize losses.

[Means for solving problems]

In the present invention, the actual flow rates of the base agent 14 and the curing agent 15 fed to the mixing device 16 are known so that the mixing ratio of the two-component adhesive B can be constantly monitored.
By making it possible to change the feed rate of the mixing device 16, the actual flow rate flowing into the mixing device 16 can be adjusted and changed.

Specifically, as shown in FIG. 1, a base agent pump 19, a hardener pump 20, and flow rate measuring devices 22, 22 are interposed between the base agent tank 17, the hardener tank 18, and the mixing device 16, respectively. hand.

The actual flow rates of the main agent 14 and curing agent 15 are measured by flow rate measuring devices 22 and 2.
2 to constantly monitor. The pumps 19 and 20 are composed of positive displacement rotary pumps such as gear pumps and multi-leaf rotary pumps, each of which is driven by a motor 25 via a speed change mechanism 24, and the discharge amount can be adjusted by changing the driving rotation speed. can be adjusted and changed.

[Effect]

Since each of the pumps 19 and 20 for feeding is configured with a positive displacement rotary pump, there is no pulsation in the discharge flow rate, and the flow rate of each pump 19 and 20, which could not be measured in the case of a plunger pump, can be measured by the flow rate measuring device 22. It can be measured at 22. In addition, flow measuring devices 22, 22 are interposed between each pump 19, 20 and the mixing device 16 to measure the actual flow rate, and
The mixing ratio can be accurately determined from the actual flow rate of the curing agent 15. If the mixing ratio changes gradually or unevenly, the mixing ratio can be adjusted by operating the transmission mechanism 24 to change the rotational speed of the main agent pump 19 or curing agent pump 20 and correcting the discharge amount. to return to a constant rate.

〔Effect of the invention〕

As explained above, in the manufacturing apparatus of the present invention, the main agent pump 19 and the curing agent pump 20 are configured with positive displacement rotary pumps,
Since the flow rate measuring devices if 22 and 22 are respectively provided between these pumps 19 and 20 and the mixing device 16, the actual flow rates of the base agent 14 and the curing agent 15 can be continuously checked. The mixing ratio of mold adhesive B can be constantly monitored in real time.

In addition, the driving rotation speed of the two-wheel pumps 19 and 20 is changed by the speed change mechanism 24.
Since the discharge amount can be corrected at any time by adjusting the amount, even if an abnormality is found in the mixture ratio by the flow rate measuring devices 22, 22, the discharge amount of the main agent pump 19 or the curing agent pump 20 can be adjusted to ensure the correct mixture ratio. It can be restored to This results in
The mixing ratio of the 2i'i type adhesive B can be continuously maintained at a constant rate, and reliability and productivity can be improved during the production of laminate films.

Since the discharge rates of the base agent pump 19 and hardener pump 20 can be changed at any time, even if an abnormality occurs in the two-component adhesive B supply system, the mixing ratio can be adjusted while the production line is running continuously. can be returned to a constant rate, and even in the worst case, the occurrence of product defects can be minimized.

〔Example〕

1 to 4 show an embodiment of a laminated film manufacturing apparatus according to the present invention.

In FIG. 1, the two proposed devices include an adhesive supply device 1, a coating device 3 that applies the two-component adhesive B supplied from this point onto the first film 2, and a second film 4 that presses the first film 2 onto the first film 2. It is provided with a pair of upper and lower laminating rolls 5 for bonding films together. 6 is the completed laminated film.

The coating device 3 is a known roll coater, and includes backup rolls 8 and 8 arranged in order from the top. applicator roll 9
．． Metering roll 10. Consists of 4 rolls: Doc Crawl 11. Metaling Roll 10 and Doc Crawl 11
An adhesive bank 12 is provided on the upper side adjacent to the adhesive bank 12, to which the two-component adhesive B from the adhesive supply device 1 is supplied.

The first film 2 passes between the backup roll 8 and the applicator roll 9, and the two-component adhesive B stored in the adhesive bank 12 passes through the metal ring lO and the applicator roll 9 to the first film 2. is applied to.

The adhesive supply device 1 includes a system for supplying the base agent 14 of the two-component adhesive B, a system 5 for supplying the curing agent 15, and mechanically stirring and mixing the base agent 14 and the curing agent 15 sent from both systems. It consists of a mixing device 16 that supplies the coating device 3.

The supply system for the base agent 14 includes a base agent tank 17. Main agent pump 1
9 and the flow rate measuring device 22 are connected in this order through a pipe line. Similarly, the supply system for the curing agent 15 connects the curing agent tank, the curing agent pump 20, and the flow rate measuring device 22 in this order through a pipe line.

The main agent pump 19 and the curing agent pump 20 are each comprised of a gear pump, which is a type of positive displacement rotary pump, and each can be independently driven to rotate by a motor 25 via a speed change mechanism 24 . As shown in FIG. 2, the transmission mechanism 24 is provided with an operating handle 26, and by rotating the operating handle 26, the driving rotation speed of each pump 19, 20 can be changed. Incidentally, the output rotational speed of the transmission mechanism 24 in the second illustrated example can be changed within a range of 10 to 5 Qrpm. Each pump 19.2
The discharge amount per rotation of 0 is 2.92cc.

The driving rotation speed range is 13.33 to 3 Qrpm, and the discharge flow rate is 38.93 to 233,6
c It is assumed that changes can be made within the range of c.

As shown in FIG. 3, the flow rate measuring device 22 includes a flow rate display means 27 that displays the flow rate, and a flow rate signal transmitting means 28 that converts the flow rate into a pulsed electric signal, amplifies it, and outputs it. The main agent 14 and curing agent 15 are fed to 16.
Measures the actual flow rate in real time.

The flow rate signal transmitting means 28 transmits one pulse per 5 cc of passing amount. This flow rate measuring device 22 is connected to each pump 19, 2.
0 and the mixing device 16, but by providing it as close to the mixing device 16 as possible, the actual flow rate can be measured more accurately.

In FIG. 4, the mixing device 16 includes a cylindrical main case 32.
A stirring chamber 35 is partitioned by blocking the top and bottom with an upper lid 33 and a lower lid 34, and a screw auger-shaped stirring body 36 and three stirring blades 37 arranged at regular intervals are placed inside the stirring chamber 35. An input shaft 38 which is disposed adjacent to the shaft above and below and projects upward from the stirring body 36 through the upper lid 33 is rotationally driven by a motor 39. A stirring rod 40 protrudes into the stirring chamber 35 from all sides with the stirring blade 37 sandwiched between the upper and lower sides.

The upper lid 33 has an inlet 41 for the main agent 14 and an inlet 4 for the curing agent 15.
2. A mixed two-component adhesive B is attached to the lower lid 34.
There is an exit 43. 44 and 45 are hot water jackets, 46
47 is a screw that fixes the main case 32 and the top cover 33, and 47 is a rubber coupling.

Main case 32, upper lid 33, and lower lid 34. and stirring body 36
can be easily separated from each other.

This makes it easy to clean the inside.

According to the adhesive supply device 1 as described above.

The actual flow rates of the base agent 14 and curing agent 15 fed to the mixing device 16 can be constantly monitored by the flow rate measuring device 22.

It can be immediately determined whether the mixing ratio of the base material 14 and the curing agent 15 is appropriate. As a result of the determination, if the mixture ratio is inappropriate, the speed change mechanism 24 is operated to change the driving rotation speed of the main agent pump 19 or hardener pump 20 to adjust the discharge amount and restore the mixture ratio to a constant rate. .

Using the output signal from the flow rate signal transmitting means 28 of the flow rate measuring device 22, if the mixing ratio changes beyond the allowable range, or if a tendency thereof appears, this is determined by a logical operation circuit or the like. Alarms are issued by sensory stimuli such as sound and light. In addition, by recording the output signal over time, it is possible to determine not only the mixing ratio of the two-component adhesive B for each manufacturing loft, but also the location of defects in the laminate film 6 when an abnormality occurs in the mixing ratio. It can also be specified.

[Brief explanation of the drawing]

1 to 4 show an embodiment of a laminated film manufacturing apparatus according to the present invention. FIG. 1 is a front view showing the basic structure of the entire device. FIG. 2 is a front view of the adhesive feeding pump and its drive mechanism. FIG. 3 is a front view of the flow rate measuring device. FIG. 4 is a longitudinal sectional front view of the mixing device. B...2-component adhesive. 3...Coating device. 14...Main agent. 15...Curing agent. 16...Mixing device. 17...Main agent tank. 18...Curing agent tank. 19...Main agent pump. 20...Curing agent pump. 22...Flow rate measuring device. 24...Transmission mechanism. 25...Motor. 27...Flow rate display means. 28...Flow rate signal transmission means. 29...Connection path. 30...Connection path. Inventor: Kazuharu Okazaki Figure 2 Figure 3 Figure 4

Claims (3)

[Claims] (1) A main agent tank 17 and a curing agent tank 18 that respectively accommodate the main agent 14 and curing agent 15 of the two-component adhesive B.
and a main agent pump 1 connected to each tank 17 and 18 respectively.
9 and a hardening agent pump 20, and the base agent 14 and hardening agent 1 pumped from both pumps 19 and 20.
Both pumps 19 and 20 are positive displacement rotary pumps, each connected to a motor 25 via a transmission mechanism 24, and each Connection channel 29 between pumps 19, 20 and mixing device 16
- A laminated film manufacturing apparatus in which flow rate measuring devices 22, 22 for measuring the actual flow rates of the main agent 14 and the curing agent 15 are installed at 30, respectively. (2) The laminate film manufacturing apparatus according to claim 1, wherein the main agent pump 19 and the curing agent pump 20 are gear pumps. (3) The flow rate measuring device 22 is provided with a flow rate display means 27 and a flow rate signal transmitting means 28 that converts the flow rate into an electric signal and outputs it. Laminate film manufacturing equipment.