JP2010115811A - Method and apparatus for removing adhesion-proofing agent adhered to rubber sheet member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and an apparatus which can efficiently remove an adhesion-proofing agent adhered to a rubber sheet member. <P>SOLUTION: The rubber sheet member R to which the adhesion-proofing agent adhered is conveyed in the longitudinal direction by a conveying roller 3 and made to pass through water W to keep the entire surface of the rubber sheet member immersed in the water W stored in a water tank 2, so that the adhesion-proofing agent is peeled off from the surface of the rubber sheet member R by the water W. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a method and an apparatus for removing an anti-adhesive that can efficiently remove the anti-adhesive attached to a rubber sheet member.

  After kneading with a mixer or the like, the sheeted rubber sheet member is an unvulcanized rubber, so when it is folded and temporarily stored, the parts that come into contact with each other are firmly attached. It is in a state where an anti-adhesive is attached. If a rubber sheet member having a large amount of adhesion of the adhesion-preventing agent is used, problems such as deterioration in physical properties of rubber and poor adhesion to steel wires occur when vulcanized. Therefore, when using the rubber sheet member to which the adhesion preventing agent is attached, the adhesion preventing agent is removed in advance as much as possible.

  Conventionally, as a method of removing the anti-adhesive agent, there is a method of removing the anti-adhesive agent (release agent) adhering to the surface of the unvulcanized rubber hose by injecting a mixture of steam and water at high pressure. Proposed. However, since the rubber sheet member has a larger surface area than the hose, it takes a long time to remove the anti-adhesive by spraying water at a high pressure, making it difficult to remove the anti-adhesive efficiently. .

Furthermore, since the treatment is performed while moving the spray nozzle over a wide range, there is a problem that the removal of the anti-adhesive agent increases. The removed anti-adhesive can be reused, but the more anti-adhesive that cannot be removed from the rubber sheet member and remains attached, the smaller the amount of anti-adhesive that can be reused. There was also a problem that more dressing was required and the cost burden increased. In summer, when unvulcanized rubber tends to adhere to each other, the use amount of the anti-adhesive agent is increased in order to increase the adhesion amount of the anti-adhesive agent. For this reason, in the case of rubber that requires the use of an expensive anti-adhesive agent, an even greater cost burden has arisen.
JP 2004-344730 A

  A main object of the present invention is to provide a method and an apparatus for removing an anti-adhesive agent that can efficiently remove the anti-adhesive agent attached to a rubber sheet member.

  In order to achieve the above object, the method of removing the anti-adhesive agent attached to the rubber sheet member of the present invention comprises transporting the rubber sheet member attached with the anti-adhesive agent in the longitudinal direction so that the entire surface is immersed in water. The anti-adhesive agent is peeled off from the surface of the rubber sheet member by passing it through water.

  Here, ultrasonic vibration can be applied to the water that the rubber sheet member passes. A brush body can be brought into contact with the surface of the rubber sheet member in water. The water passing through the rubber sheet member can be agitated to generate a water flow. Moreover, it is also possible to collect an anti-adhesion solution containing an anti-adhesive agent peeled off from the surface of the rubber sheet member and send it to the anti-adhesive agent reuse step.

  An apparatus for removing an adhesion agent attached to a rubber sheet member of the present invention comprises a conveying means for conveying the rubber sheet member to which the adhesion agent adheres in the longitudinal direction, and a water tank through which the rubber sheet member passes, When the rubber sheet member passes through the inside of the water tank, the entire surface of the rubber sheet member is soaked in the water stored in the water tank.

  Here, an ultrasonic vibration means for vibrating the water stored in the water tank may be provided. A brush body that contacts the surface of the rubber sheet member may be provided inside the water tank. Stirring means for stirring water stored in the water tank may be provided. Moreover, the said water tank can also be connected to an anti-adhesion liquid preparation tank via piping.

  According to the present invention, the rubber sheet member to which the anti-adhesive agent is attached is conveyed in the longitudinal direction, and the anti-adhesive agent is peeled off from the surface of the rubber sheet member by passing the water so that the entire surface is immersed in water. Therefore, even with a rubber sheet member having a large surface area, it is possible to remove more anti-adhesive agent while suppressing an increase in processing time.

  Hereinafter, a method and an apparatus for removing an adhesion agent attached to a rubber sheet member of the present invention will be described based on the embodiments shown in the drawings.

  As illustrated in FIG. 1, the belt-shaped rubber sheet member R to which the adhesion-preventing agent is attached is stocked in a state where it is folded and laminated. This rubber sheet member R is transported in the longitudinal direction and passes through an anti-adhesive agent removing step in which an anti-adhesive agent removing device 1 (hereinafter referred to as a removing device 1) attached to the rubber sheet member of the present invention is installed. Then, after passing through the drying process in which the drying device 12 is arranged, it is conveyed to the post-processing process. In this embodiment, the post-processing step is an extrusion step by the extruder 14, but is not limited to this and may be a kneading step or the like. The anti-adhesive agent is a known one that prevents adhesion of unvulcanized rubber.

  As illustrated in FIG. 1 and FIG. 2, the removing device 1 includes a water tank 2 provided with a water temperature adjusting means 8, and a conveying roller 3 (conveying means) that conveys a rubber sheet member R to which an anti-adhesive agent is adhered in the longitudinal direction. Have. In the water tank 2, an ultrasonic vibrator 4a, a stirring means 5, and a rotating brush 6 are provided. The rubber sheet member R to which the adhesion-preventing agent is attached is stretched over a plurality of support rollers in addition to the conveying roller 3 so that the entire surface is immersed in water W stored in the water tank 2 and passes therethrough. .

  A water supply pipe 7 is provided above the water tank 2. The tip of the water supply pipe 7 is located on the rubber sheet member R conveyed into the water tank 2. A pipe 11 a provided with a pump 10 is connected below the water tank 2, and this pipe 11 a is connected to the anti-adhesion liquid preparation tank 9. Further, another piping 11 b is connected to the deposition preventing liquid preparation tank 9. For example, the pipe 11b is connected to a dip tank installed in the coating process of the deposition preventing liquid L. This coating process is a process for reusing the adhesion-preventing agent.

  The water temperature adjusting means 8 is composed of a heating body 8 a and a control device 8 b installed on the bottom surface of the water tank 2. The water temperature in the water tank 2 can be set and maintained at an arbitrary temperature by the control device 8b.

  The ultrasonic transducer 4a constitutes ultrasonic vibration means together with the control device 4b. The vibration frequency and amplitude (output magnitude) generated by the ultrasonic transducer 4a can be controlled by the control device 4b.

  The number of ultrasonic transducers 4a installed is not limited to two as in the embodiment, and an appropriate number can be installed. Moreover, it is preferable that the installation position of the ultrasonic transducer 4a be as close to the rubber sheet member R as possible.

  The stirring means 5 may be anything as long as the water W in the water tank 2 can be stirred. In this embodiment, a screw is installed as the stirring means 5. Although the number and installation positions of the stirring means 5 can be determined as appropriate, it is preferable that the water flow generated by the stirring means 5 strikes the rubber sheet member R as strongly as possible.

  The rotating brush 6 is disposed so as to face the rubber sheet member R in water in the thickness direction. The rotating brush 6 rotates while contacting the surface of the rubber sheet member R. The number of rotations of the rotating brush 6 can be controlled by a control device (not shown), and the direction of rotation (forward rotation, reverse rotation) can be arbitrarily controlled. The number of rotating brushes 6 can be determined as appropriate, but the installation position is underwater.

  In this embodiment, the rotating brush 6 is provided. However, any brush body that contacts the underwater rubber sheet member R may be used, and a non-rotating fixed brush may be used. In addition, the brush body of this invention can peel off the adhering anti-adhesive agent by contacting the surface of the rubber sheet member R, and includes a brush equivalent.

  Next, the removal method of the adhesion agent adhering to the rubber sheet member R of the present invention will be described.

  First, the belt-shaped rubber sheet member R to which the adhesion-preventing agent is attached is conveyed in the longitudinal direction by the conveying roller 3 and enters the water W of the water tank 2. That is, the entire surface of the rubber sheet member R is immersed in the water stored in the water tank 2 and is in a so-called soaked state. Here, the conveyance of the rubber sheet member R is stopped, and the predetermined range of the rubber sheet member R is left in water for a certain period of time. The rubber sheet member R can be continued to be transported, but in that case, the transport speed is made as slow as possible.

  Thereby, the adhering adhesion preventing agent is peeled off from the surface of the rubber sheet member R by the water W. Since the rubber sheet member R is in a state of being soaked in the water W, it is difficult for removal of the anti-adhesive agent to occur.

  In this embodiment, since the water temperature adjusting means 8 is provided, the water temperature in the water tank 2 is set to a temperature at which the anti-adhesive agent is easily peeled off from the rubber sheet member R. For example, the water temperature in the water tank 2 is set to about 5 ° C to 60 ° C.

  Further, the ultrasonic vibrator 4 a is operated to vibrate the water W in the water tank 2. By this ultrasonic vibration, the anti-adhesive agent that has entered the fine irregularities on the surface of the rubber sheet member R is also lifted and can be removed. The optimum vibration frequency of the ultrasonic transducer 4a varies depending on the adhesion state of the anti-adhesive agent, but is set to 20 kHz to 50 kHz, for example. The vibration frequency can be fixed to a predetermined value, but may be changed.

  Further, the rotating brush 6 is operated to scratch the surface of the rubber sheet member R and peel off the adhering adhesion agent. The number of rotations of the rotating brush 5 can be determined as appropriate. The rotational speed of the rotating brush 6 can be fixed to a predetermined value, but can also be changed. The rotation direction of the rotating brush 6 can be a fixed direction, but the rotation direction can also be changed in the middle. By changing the rotation direction every predetermined time, the anti-adhesive agent can be removed more efficiently.

  Further, the stirring means 5 is operated to generate a water flow in the water tank 2. Thereby, since the new water W collides sequentially and continuously with the rubber sheet member R, the adhering anti-adhesive agent becomes easy to peel off.

  In this embodiment, the ultrasonic vibration means 4, the stirring means 5, and the brush body (rotating brush 5) are provided, but at least one of these three is provided. Since a synergistic effect can be obtained by combining a plurality of these three, it is possible to remove the anti-adhesive agent more efficiently.

  For example, when the rotating brush 6 is operated while applying ultrasonic vibration to the water W stored in the water tank 2, not only the anti-adhesive agent attached to the rubber sheet member R can be removed, but also the peeled anti-adhesive agent is ultrasonic vibration. Therefore, the anti-adhesive agent can be removed more efficiently.

  The rubber sheet member R from which the adhesion-preventing agent has been removed is sent from the removing device 1 to the drying device 12. In the drying device 12, the rubber sheet member R is stretched over the plurality of rack bars 13 and held in a meandering manner, and moisture is forcibly dried by blowing air from a fan or the like. The rubber sheet member R that has been dried is conveyed from the drying device 12 to the extruder 14 in the post-processing step and used as an extrusion material.

  As described above, according to the present invention, since the entire surface of the rubber sheet member R is immersed in the water W, even if the rubber sheet member R has a large surface area, it is possible to suppress an increase in processing time for removing the adhesion-preventing agent. In addition, it is possible to remove more of the anti-adhesive agent attached to the rubber sheet member R and reduce the amount of the anti-adhesive agent that remains attached to the rubber sheet member R. Therefore, when rubber | gum which uses this rubber sheet member R is vulcanized | cured, malfunctions, such as a rubber | gum physical property falling and adhesion with a steel wire worsening, can be prevented.

  Since the anti-adhesive agent can be efficiently removed in this manner, more of the anti-adhesive agent adhering to the rubber sheet member R is dropped into the water W of the water tank 2. When the amount of the anti-adhesive contained in the water W of the aquarium 2 increases, the anti-adhesive liquid L (water containing the anti-adhesive) is operated through the pipe 11a by operating the pump 10. It is sent to 9 and collected.

  When the deposition preventing liquid L is sent to the deposition preventing liquid preparation tank 9, the water W in the water tank 2 decreases, so that new water W is supplied into the water tank 2 through the water supply pipe 7. At this time, if the water W from the water supply pipe 7 is applied to the surface of the rubber sheet member R before being immersed in the water W of the water tank 2, the adhesion preventing agent attached by the water flow of the water W can be peeled off. .

  In the anti-adhesion liquid production tank 9, new water and an anti-adhesive agent are mixed, and the anti-adhesion liquid L sent from the water tank 2 is added to produce a new anti-adhesion liquid L. The anti-adhesion liquid L prepared in the anti-adhesion liquid preparation tank 9 is sent to, for example, a dip tank installed in the application process of the anti-adhesion liquid L. Then, another rubber sheet member R is soaked in the deposition liquid L of the dip tank.

  In the present invention, a larger amount of the anti-adhesive agent adhering to the rubber sheet member R can be removed as compared with the conventional case, so that the loss of the anti-adhesive agent is minimized and the anti-adhesive agent is used in the reuse process (coating process). Can be effectively reused. Therefore, the amount of a new anti-adhesive that is additionally required is small, and when an expensive anti-adhesive is used, a particularly large cost reduction effect can be obtained.

  Sample with the same rubber sheet member with no anti-adhesive agent (Reference Example 1) and sample with no anti-adhesive removal treatment for the rubber sheet member with the same anti-adhesive agent (Comparative Example) 1) and 6 types of samples (Examples 1 to 4) obtained by removing the following anti-adhesive using the removal apparatus illustrated in FIG. Using the rubber kneaded with each sample, a drawn sample was prepared according to ASTM D2229, and a wire drawing test was performed. The results are shown in Table 1.

  In Example 1, the rubber sheet member was subjected to a treatment of immersing the entire surface in water in a water tank for 30 seconds. In Example 2, in addition to the process of Example 1, a process of applying ultrasonic vibration of 40 kHz to the water in the aquarium was performed for 30 seconds. In Example 3, in addition to the process of Example 1, the process of stirring the water in the water tank for 30 seconds was performed. In the fourth embodiment, in addition to the processing of the first embodiment, a processing is performed in which the rotating brush is uniformly contacted with both surfaces of the rubber sheet member for 30 seconds.

  The amount of remaining adhesion in Table 1 is shown as a percentage of (anti-adhesive weight / rubber weight) of each sample. The pulling force in Table 1 is indicated by an index using the measurement result of Reference Example 1 as a reference 100, and the larger the value, the greater the pulling force.

  From the results of Table 1, Examples 1 to 4 in which the entire surface of the rubber sheet member was immersed in water and subjected to the removal treatment of the anti-adhesive agent of the present invention were compared with Comparative Example 1 in which the anti-adhesive agent removal treatment was not performed. Thus, it can be seen that the adhesion amount of the adhesion-preventing agent is small and the rubber physical properties (adhesive strength) when vulcanized are excellent.

It is explanatory drawing which illustrates the removal process and drying process of a protective agent. It is explanatory drawing which illustrates the removal apparatus of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Removal apparatus 2 Water tank 3 Conveyance roller 4 Ultrasonic vibration means 4a Ultrasonic vibrator 4b Control apparatus 5 Stirring means 6 Rotating brush 7 Water supply pipe 8 Water temperature adjustment means 8 Heating body 8 Control apparatus 9 Anti-adhesion liquid preparation tank 10 Pump 11a 11b Piping 12 Drying device 13 Rack bar 14 Extruder R Rubber sheet member L Anti-adhesion liquid

Claims (10)

  The rubber sheet member to which the anti-adhesive agent was adhered was conveyed in the longitudinal direction, passed through the water so that the entire surface was immersed in water, and adhered to the rubber sheet member by which the anti-adhesive agent was peeled from the surface of the rubber sheet member with water. How to remove the anti-adhesive   The removal method of the adhesion agent adhering to the rubber sheet member of Claim 1 which gives an ultrasonic vibration to the water which the said rubber sheet member passes.   The removal method of the adhesion agent adhering to the rubber sheet member of Claim 1 or 2 which makes a brush body contact the surface of the said rubber sheet member in water.   The removal method of the adhesion agent adhering to the rubber sheet member in any one of Claims 1-3 which stirs the water which the said rubber sheet member passes, and produces a water flow.   The rubber sheet member according to any one of claims 1 to 4, wherein an anti-adhesive solution containing an anti-adhesive agent peeled off from the surface of the rubber sheet member is collected and sent to the reuse step of the anti-adhesive agent. A method for removing the attached adhesion-preventing agent.   A conveying means for conveying the rubber sheet member to which the adhesion-preventing agent has adhered in the longitudinal direction and a water tank through which the rubber sheet member passes, and when the rubber sheet member passes through the inside of the water tank, The removal apparatus of the adhesion agent adhering to the rubber sheet member comprised so that the whole surface might be immersed in the water stored in the water tank.   The apparatus for removing an anti-adhesive agent attached to a rubber sheet member according to claim 6, further comprising ultrasonic vibration means for vibrating water stored in the water tank.   The apparatus for removing an anti-adhesive agent attached to a rubber sheet member according to claim 6 or 7, wherein a brush body in contact with the surface of the rubber sheet member is provided inside the water tank.   The apparatus for removing an adhesion-adhering agent attached to a rubber sheet member according to any one of claims 6 to 8, further comprising stirring means for stirring water stored in the water tank.   The removal apparatus of the adhesion agent adhering to the rubber sheet member in any one of Claims 6-9 which connected the said water tank to the adhesion prevention liquid preparation tank via piping.

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