JP4980011B2 - Packing - Google Patents

Description

  The present invention relates to a packing for forming a packing body formed of a soft elastic gel material and a mold made of a hard material, and arranging the sealing material between a pair of objects. Is.

Conventionally, to prevent contact with atmosphere containing dust or chemicals, etc. in the control panel installed in the factory, the communication between the inside and the outside is shut off to the door and lid, etc. It is known to provide a packing for making it difficult to enter the atmosphere. As shown in Patent Document 1 and Patent Document 2, this packing is generally formed of an elastic resin material such as urethane or rubber, and due to this elasticity, the packing is disposed between a pair of objects. When this is done, this packing is brought into close contact with each object to improve the sealing performance between the objects.
Japanese Patent Publication No. 7-69016 Japanese Patent Publication No. 7-94566

  However, in the atmosphere of a factory or the like where an acid or alkaline liquid is floating in the form of a mist, particularly when urethane packing as shown in Patent Document 1 is used, urethane is weak against acids and alkalis. The packing may be deteriorated by contact with acid or alkali liquid. For this reason, when such deterioration occurs, the sealability is deteriorated by cracking or breaking the packing, and it is impossible to reliably shut off the outside and the inside of the control panel or the like. It was.

  Among the rubber packings shown in Patent Document 2, those made of butyl rubber have elasticity, but are poor in flexibility and stretchability, and are difficult to exhibit excellent sealing properties and resilience. Thus, it has been difficult to maintain good sealing performance. Therefore, when the packing as described in Patent Document 1 and Patent Document 2 is used in an atmosphere of a factory or the like where an acid or alkaline liquid is suspended in a mist, the acid or alkali in the external atmosphere is There was a risk of intruding into the inside and coming into contact with precision parts or the like assembled on the control panel, causing problems in the precision parts.

  Accordingly, the present invention is intended to solve the above-described problems, and has excellent flexibility and stretchability, acid resistance and alkali resistance, and an acid or alkali liquid floats in a mist form. It is intended to obtain a packing that can hardly deteriorate even in an atmosphere, and can maintain a good sealing property between a pair of objects.

  In order to solve the above-described problems, the packing body of the present invention is formed of a gel material having soft elasticity mainly composed of an addition polymerization thermoplastic block elastic body and paraffinic oil. By forming with such a gel material, it becomes possible to obtain an acid / alkali-resistant packing having excellent flexibility and stretchability. Further, the packing body has an engaging portion formed on one side, and an intervening piece projectingly formed integrally with the engaging portion on the other side.

  And the packing of this invention is comprised by the mold body made from a hard material engaged with the engaging part of the packing main body, and this packing main body. In this way, by easily engaging the packing body and the hard material formwork, the packing body can be easily and tightly fixed to one of the pair of objects of the sealing target portion via the hard material formwork. Is possible.

Then, the mold tightly fixed to the one of the control panel of the door body and the control board housing frame, with is interposed between the intermediate pieces the control panel of the door body and the control board housing frame of the packing body by disposing the mold on the inside of the closed object portion, between the control panel of the door body and the control board housing frame with tight closes, the mold, upon closure of the control panel of the door body , it is an arrangement available-inside the control panel.

  The addition polymerization type thermoplastic block elastic body may contain one or more of styrene ethylene propylene, styrene ethylene propylene styrene, styrene ethylene butadiene, and styrene ethylene butadiene styrene.

  Further, the interposition piece may be formed in a flat plate shape, or the cross-sectional shape of one side surface or the other side surface may be an arc shape or a mountain shape protruding outward.

  The present invention is configured as described above, and the packing body is formed of a gel material having soft elasticity mainly composed of an addition polymerization type thermoplastic block elastic body and paraffinic oil. Therefore, the gel material has excellent flexibility and stretchability, and has acid resistance and alkali resistance properties.

Then, the packing body can be fixedly disposed on one of the door body of the control panel and the storage frame of the control panel via the mold frame by engaging the packing body with the mold frame via the engaging portion. It becomes possible. Therefore, the arrangement shape of the packing main body is held by the mold and can be stably fixed to the sealing target portion. Accordingly, deformed or even by long-term use, without the or displaced fixing position, the intermediate piece interposed between the housing frame of the control panel of the door body and the control panel, the control panel of the door body and the control board Each of the storage frames can be securely attached to each other.

Further, since the packing Body are acid resistance and alkali resistance, even when the liquid acid or alkali in the external environment floating atomized, packing the body is in contact with the liquid of the acid or alkali, It becomes difficult to deteriorate. Therefore, even in an atmosphere in which the liquid of acid or alkali are floating in mist, it is possible to maintain a good sealability between the pair of objects by an intervening piece of packing the body.

BEST MODE FOR CARRYING OUT THE INVENTION

  The gel material constituting the packing body is mainly composed of an addition polymerization thermoplastic block elastic body and paraffinic oil. And this addition polymerization type | system | group thermoplastic block elastic body and paraffin-type oil are strong in an acid and an alkali, since they do not have polarity.

  Further, the addition polymerization type thermoplastic block elastic body includes a block copolymer comprising a polystyrene block (S) and a hydrogenated or non-hydrogenated polyisoprene block (I), and / or a polystyrene block and a hydrogenated or non-hydrogenated block. The block copolymer is composed of a hydrogenated polybutadiene block (B). That is, the addition polymerization type thermoplastic block elastic body is a block copolymer composed of S and I, a block copolymer composed of S and B, or a composite of each of the above block copolymers.

  The block copolymer comprising the polystyrene block (S) and the hydrogenated or non-hydrogenated polyisoprene block (I) is specifically a saturated diblock or triblock type styrene ethylene propylene ( SEP) and styrene ethylene propylene styrene (SEPS) are preferably used. Further, as the block copolymer comprising the polystyrene block (S) and the hydrogenated or non-hydrogenated polybutadiene block (B), specifically, styrene ethylene butadiene (SEB) and styrene ethylene butadiene styrene (SEBS) are preferable. Used for.

  As the addition polymerization type thermoplastic block elastic body of the present invention, SEP, SEPS, SEB, SEBS can be used alone, or two or more kinds of SEP, SEPS, SEB, SEBS are combined. Can also be used. The addition polymerization type thermoplastic block elastic body is a diblock represented by (SI) or (SB), or S- (IS) n or S- (BS). It is a triblock represented by the general formula of n (where n = 1 to 5) and higher.

  Further, the addition polymerization type thermoplastic block elastic body of the present invention preferably has a total number average molecular weight of 5,000 to 500,000. The content of the S block unit is preferably 5 to 70 wt%, and 70% or more of the double bond of the I block unit or B block unit is hydrogenated. The weight average molecular weight of the S block unit is preferably 5000 to 125000, and the weight average molecular weight of the I block unit or B block unit is preferably 15000 to 250,000.

  Moreover, the paraffinic oil of the present invention is not particularly limited in its type, but liquid paraffin is preferable because it is easily available and low in cost. Moreover, the molding method of the packing body is not particularly limited, and it can be molded by an injection molding method, a compression molding method, an extraction molding method, a sheet molding method, or the like.

  In addition, the mold of the present invention is disposed inside the sealing target portion, and the interposed piece of the packing body is disposed on the side in contact with the external atmosphere where the acid or alkali liquid floats. Therefore, since the above-mentioned formwork does not come into contact with the external atmosphere, the material is not particularly limited as long as it is made of a hard material and can be firmly fixed to one of a pair of objects. Or metal can be used.

  1-4, the first embodiment of the present invention will be described with reference to FIGS. 1 to 4. In this embodiment, the packing (25) is disposed on the one-sided door body (11) of the control panel (10). . The packing (25) of the first embodiment will be described in detail. As shown in FIG. 2, (1) is a packing body, which is formed in a long bar shape. This packing main body (1) is formed of a gel material having soft elasticity mainly composed of an addition polymerization type thermoplastic block elastic body and paraffinic oil.

  The control panel (10) described in the present embodiment and the following embodiments 2 and 3 is provided with a control switch (23) and instruments collectively by remote operation of a machine or an electric device. This means that the opening of the control panel body (12) is covered with a door body (11) or the like.

  In the present embodiment, styrene ethylene propylene, styrene ethylene propylene styrene, styrene ethylene butadiene, and styrene ethylene butadiene styrene which are addition polymerization type thermoplastic block elastic bodies are used in combination. In this embodiment, liquid paraffin is used as the paraffinic oil.

  The addition polymerization thermoplastic block elastic body and paraffinic oil have no polarity and are acid and alkali resistant. Therefore, as described above, the packing body (1) is formed of an addition polymerization type thermoplastic block elastic body and a gel material mainly composed of paraffinic oil, so that the acid and alkali resistant packing body (1) is formed. Can be obtained.

  Here, in order to verify the above-described characteristics of the packing body (1), the chemical resistance of the packing body (1) of Example 1 was tested. The chemicals used were 5% sulfuric acid aqueous solution, 5% acetic acid aqueous solution, 10% sodium hydroxide aqueous solution and 25% ammonia aqueous solution. Moreover, the test method was performed by the method of immersing a test piece in each chemical | medical solution for 7 days. And the mass after one day, two days, and seven days after the immersion start was measured, respectively, and the mass change rate before immersion after immersion was calculated by following Formula.

A = (W2-W1) / W1 × 100
A is the mass change rate (%), W1 is the mass (g) of the test piece before immersion, and W2 is the mass (g) of the test piece after immersion.
The test results are shown in Table 1 below.

  From the above test results, in all the chemicals, the mass change rate was less than 1% after 1 day of immersion, 2 days after immersion, and 7 days after immersion. Therefore, even if the packing body (1) was immersed in acid, alkali, or strong alkali, it was possible to obtain a result that the volume change hardly occurred. Therefore, from the above results, it was proved that even when contacted with an acid or an alkali, it hardly deteriorates.

  Further, in order to verify the flexibility and stretchability of the packing body (1), the hardness, elongation and compression set of the packing body (1) were measured. The hardness is JIS hardness and was measured by a test method according to JIS K 6301.

  As a result, the hardness was 0. Compared with this, the hardness of the butyl rubber which is a prior art example is generally 20-90, and the hardness of urethane is 60-100. Therefore, the hardness of the packing body (1) is much lower than the hardness of butyl rubber or urethane, and thus it was revealed that the packing body (1) is excellent in flexibility.

  Next, the elongation was 1300 or more. On the other hand, the elongation of butyl rubber is generally 100 to 800, and the elongation of urethane is generally 300 to 800. Accordingly, the elongation rate of the packing body (1) is much higher than that of butyl rubber and urethane, and thus it was revealed that the packing body (1) is excellent in flexibility and stretchability. .

  Further, the compression set when the compression rate was 25% was measured based on JIS K 6262. As a result, the compression set was 12%, and it was revealed that most of the portion could be restored to its original shape even after compression and had excellent elasticity. From the above results, it was confirmed that the packing body (1) had excellent flexibility and stretchability equivalent to or higher than those of the conventional products.

  Further, as shown in FIG. 2, the packing body (1) is formed in a long rod shape, and an engaging portion (2) is formed on one side of the packing body (1). The engaging portion (2) is formed by providing a concave groove (3) having a U-shaped cross section at one location in the length direction of the packing body (1) at opposing positions on both side surfaces. The cross-sectional shape is rectangular. Further, the engaging portion (2) is continuous from one end to the other end of the packing body (1).

  Then, the partition wall (4) protrudes in parallel with the engaging portion (2) of the packing body (1) through a concave groove, and the interposition piece (24) is interposed in parallel with the partition wall (4). 5) is protrudingly formed. The interposition piece (5) is formed so as to protrude continuously in the width direction of the packing body (1) from one end to the other end of the packing body (1). Moreover, this interposition piece (5) makes the cross-sectional shape of the side closely_contact | adhered to a target object the circular arc-shaped part (16). And the opposite surface (26) on the opposite side to the arc-shaped part (16) of the said interposition piece (5) is made into planar shape.

  Further, the engagement portion (2) of the packing body (1) formed as described above is provided with a mold frame (6) for fixing the packing body (1) to the door body (11) as shown in FIG. Is engaged. This mold (6) is formed of an ABS resin made of a hard material and has a U-shaped cross section. In addition, a pair of inwardly projecting engagement pieces (7) are formed on the opening edge of the mold (6) continuously from one end to the other end of the mold (6).

  Then, the mold (6) formed as described above and the packing body (1) are engaged. That is, the engaging portion (2) of the packing body (1) is inserted while being elastically deformed inwardly from the opening (8) of the mold (6), and as shown in FIG. The pair of engaging pieces (7) of the mold (6) are engaged with the pair of concave grooves (3), respectively.

  At this time, the shape and size of the cross section of the engaging portion (2) correspond to the shape and size of the inner surface of the mold (6). Therefore, the engaging part (2) arranged inside the mold (6) as described above is locked by the engaging piece (7) of the mold (6), and the engaging part (2) Is in a state in which it is difficult to remove from the inside of the mold (6) to the outside. As described above, the packing (25) of the first embodiment is formed by engaging the mold (6) and the packing body (1).

  And the case where the packing (25) formed as mentioned above is arrange | positioned at the door body (11) of the control panel (10) of a single opening as shown in FIG. 1 is demonstrated. First, as shown in FIGS. 1 and 3, the packing (25) is rectangular on the inner surface of the door (11) facing the flat storage frame (13) formed on the front surface of the main body of the control panel (10). Arranged in a frame shape.

  In this arrangement, the interposition piece (5) of the packing main body (1) is arranged on the outer peripheral side of the door body (11) in contact with the external atmosphere, and the mold (6) is arranged on the inner peripheral side of the packing main body (1). ). Then, the mold (6) is fixed to the door body by an appropriate method such as double-sided pressure-sensitive adhesive tape, adhesive, or screw fixing. And the surface (26) opposite to the arc-shaped portion (16) of the interposition piece (5) of the packing body (1) fixed to the mold (6) is in surface contact with the inner surface of the door body (11). Let

  When the door (11) of the control panel (10) is closed by disposing the packing (25) on the inner surface of the door (11) of the control panel (10) as described above, as shown in FIG. The arc-shaped part (16) of the interposition piece (5) of (1) and the surface of the flat storage frame (13) are in close contact. The arcuate portion (16) of the interposition piece (5) is in close contact with the surface of the storage frame (13) and the entire circumference of the storage frame (13), and the opposite surface (26) of the interposition piece (5) is the door body. It will be in close contact with the inner surface of (11) in a state of continuous surface contact over the entire circumference.

  Therefore, the space between the door body (11) and the storage frame (13) of the control panel main body (12) is hermetically sealed through the interposition piece (5). Note that the pair of objects of the sealing target portion in the present embodiment are the door body (11) and the rectangular storage frame (13) projecting from the opening edge of the control panel main body (12). As described above, the space between the door body (11) and the control panel body (12) is sealed via the interposition piece (5), so that the outside of the control panel (10) and the inside of the control panel (10) are connected. Can be completely blocked.

  Since the packing body (1) is acid and alkali resistant as described above, acid and alkaline liquids are present in the environment of the factory where the packing body (1) is installed with the control panel (10). Even when floating in the form of a mist, it is possible to maintain a good sealing property between the door body (11) and the control panel main body (12) without being affected by these acid and alkali liquids. Therefore, it becomes difficult for the acid and alkali liquids in the environment to enter the control panel (10), and the precision parts in the control panel (10) are less likely to cause problems due to contact with acid or alkali liquids. It can be.

  Further, when the door body (11) of the control panel (10) is closed and the door body (11) and the storage frame (13) of the control panel body (12) are sealed as described above, it is shown in FIG. As described above, the portion of the packing body (1) exposed to the outside of the control panel (10) comes into contact with the acid or alkali liquid in the environment, but is engaged with the packing body (1). Since the mold frame (6) is engaged with the inner peripheral side of the packing body, the mold frame (6) is positioned inside the control panel body (12) when the door body (11) is closed. Therefore, when the door (11) is closed, the mold (6) hardly comes into contact with the acid or alkali liquid, so that the deterioration due to the contact with the acid or alkali liquid hardly occurs. ing.

  Moreover, in the said Example 1, although the cross-sectional shape of the interposition piece (5) in the side closely_contact | adhered to a target object is made into the circular arcuate part (16), in Example 2 of this invention, as shown in FIG. The cross-sectional shape on the side in close contact with the object is a mountain-shaped mountain portion (28). And the packing (25) which formed the mountain-shaped part (28) as mentioned above of the door body (11) facing the flat storage frame (13) formed in the front surface of the main body of the control panel (10). Arranged in the shape of a rectangular frame on the inner surface.

  As a result, when the door body (11) of the control panel (10) is closed, as shown in FIG. 6, the distal end portion of the mountain-shaped portion (28) of the interposition piece (5) and the flat storage frame (13). Adheres to the surface. And the mountain-shaped part (28) of the interposition piece (5) comes into close contact with the surface of the storage frame (13) and the entire periphery of the storage frame (13), and the outside and the inside of the control panel (10) are completely connected. It becomes possible to block.

  In the first and second embodiments, the packing (25) is fixedly arranged on the door body (11) of the one-sided control panel (10). In the third embodiment of the present invention, as shown in FIG. The packing (25) is fixedly disposed on the one-side door body (17) and the other-side door body (18) of the double-open control panel (10).

  The third embodiment will be described in detail below. When the one-side door body (17) and the other-side door body (18) are closed, the one-side door body (17) is first closed as shown in FIG. Then, on the upper surface of the mating portion (15) provided on the other door body side (18) of the one side door body (17), the inner edge of the one side door body (17) side of the other side door body (18). By superposing (22), the one-side door (17) and the other-side door (18) are closed.

Further, as shown in FIG. 7, a flat storage frame 13 having a constant width is formed at the opening edge of the front surface of the control panel main body 12. Further, packings (25) are fixedly arranged on the inner surfaces of the one-side door body (17) and the other-side door body (18) at a position facing the storage frame (13) of the control panel main body (12) when closed. is doing. As shown in FIG. 2, the packing body (1) of the packing (25) is formed so that the cross-sectional shape of the interposition piece (5) is arcuate as in the first embodiment, and the arcuate portion (16) protrudes. It is set.

  Thus, by projecting the arc-shaped portion (16) on the interposition piece (5), the arc-shaped portion (16) of the interposition piece (5) can be reliably brought into close contact with the flat storage frame (13). . Therefore, it becomes possible to make the adhesiveness of an interposition piece (5) and a storage frame (13) favorable. As described above, by arranging the interposition piece (5) provided with the arc-shaped portion (16) on the inner surface of the one side door body (17) and the other side door body (18), the one side door body (17) and the other side door body (17) are arranged. When the door is closed, the arcuate portion (16) of the interposition piece (5) comes into close contact with the storage frame (13) of the control panel main body (12) over the entire circumference.

  However, in the case where the interposition piece (5) is an arcuate portion (16), the adhesion to the flat surface is extremely excellent, but it is possible to improve the adhesion by abutting the end surface (21) of the flat plate. It will be difficult. Therefore, when the end face (21) of such a flat plate is abutted to maintain the sealing property, the interposed piece (5) is a flat plate portion (27) having a flat surface.

Then, as shown in FIG. 10, one side of the interposition piece (5) on which the flat plate portion (27) is formed is arranged in close contact with the inner surface edge (22) of the other side door body (18). In this state, as shown in FIG. 11, the inner edge (22) of the other side door body (18) is overlapped with the upper surface of the mating portion (15) of the one side door body (17). The interposition piece (5) of the packing body (1) fixed to the other door body (18) comes into close contact with the end face (21) of the protruding piece (20) of the portion (15).

  At this time, as described above, since the surface of the interposition piece (5) is flat by forming the flat plate portion (27), the end surface (21) of the projecting piece (20) of the mating portion (15) is formed. It is possible to make sure that the interposition piece (5) is continuously adhered to the interposition piece (5). Therefore, the packing body (1) fixed to the inner surface of the other door body (18) in a rectangular frame shape has a flat plate portion (27) on one side of the mating portion (15) side as shown in FIG. It will be in the state which has arrange | positioned the interposition piece (5) which provided the arc-shaped part (16) in the other 3 sides. In addition, as shown in FIG.12 and FIG.13, the connection part of the arc-shaped part (16) of the interposition piece (5) and the flat plate part (27) is formed continuously and integrally.

  Therefore, with the one-side door body (17) closed, the other-side door body (18) is further closed, and the inner edge of the other-side door body (18) ( 22), the arcuate portion (16) disposed at the position opposite to the storage frame (13) of the control panel main body (12) is brought into close contact with the storage frame (13) of the control panel main body (12), and The flat plate portion (27) disposed on the inner surface edge (22) of the other side door body (18) comes into close contact with the protruding piece (20) of the mating portion (15) of the one side door body (17).

  Accordingly, the one-side door body (17) and the other-side door body (18), and the storage frame (13) and one side of the control panel main body (12), which are between the pair of objects of the sealing target portion in this embodiment. It becomes possible to seal between the upper surfaces of the mating portions (15) of the door body (17). Thus, by sealing between the one side door body (17) and the other side door body (18) and the control panel main body (12) via the interposition piece (5), the control panel (10). And the inside of the control panel (10) can be completely shut off.

Further, the packing body (1) formed as described above has excellent flexibility and stretchability as well as the above-described Example 1 and Example 2, and has acid resistance and alkali resistance, so that the packing body (1) is controlled. Even if the acid or alkali liquid is floating in the form of a mist in the environment of the factory where the panel (10) is installed, the door body and the control panel main body are not affected by the acid or alkali liquid. It becomes possible to keep the sealing property between (12) favorable. Therefore, it becomes difficult for the acid or alkali liquid in the environment to enter the control panel (10), and it is difficult for the precision parts or the like in the control panel (10) to be defective due to contact with the acid or alkali liquid. can do.

In Example 1 of this invention, the perspective view which shows the state which has arrange | positioned packing to the control panel. FIG. 3 is a partially enlarged perspective view of the packing according to the first embodiment. Sectional drawing which shows the relationship between the storage frame of Example 1, and the door body which has arrange | positioned packing. The partial expanded sectional view which shows the state which closed the door body of Example 1. FIG. Sectional drawing which shows the relationship between the storage frame and the door body which has arrange | positioned packing in Example 2 of this invention. The partial expanded sectional view which shows the state which closed the door body of Example 2. FIG. In Example 3 of this invention, the front view which shows the state which has arrange | positioned packing to the control panel of a double opening system. The front view which shows the state which closed the 1 side door body of Example 3. FIG. FIG. 9 is a partially enlarged perspective view of the packing according to the third embodiment. Sectional drawing which shows the relationship between the matching part of Example 3, and the other door body. Sectional drawing which shows the state which closed the 1st side door body and the other side door body of Example 3. FIG. The perspective view which shows the formwork and packing main body of the other side door body of Example 3. FIG. FIG. 9 is a partially enlarged perspective view of the packing according to the third embodiment.

DESCRIPTION OF SYMBOLS 1 Packing main body 2 Engagement part 5 Interposition piece 6 Mold frame 10 Control panel 11 Door body 13 Storage frame

Claims (4)

It is made of an addition polymerization thermoplastic block elastic body and a soft elastic gel material mainly composed of paraffinic oil, and an engaging portion is formed on one side, and the engaging portion is integrally formed on the other side. a packing body which protrudes form the intermediate pieces successively, the packing consists of a hard material made of mold engaged with the engagement portion of the main body, the mold and control the control panel of the door body is closed object unit Closely fixing to one of the storage frame of the panel, interposing the interposition piece of the packing body between the door body of the control panel and the storage frame of the control panel, and placing a mold frame inside the sealing purpose part , between the control panel of the door body and the control board housing frame with tight closes, the mold is when closing of the control panel of the door body, characterized in that the arrangement available-inside the control panel packing .   The packing according to claim 1, wherein the addition polymerization type thermoplastic block elastic body contains at least one of styrene ethylene propylene, polypropylene styrene, styrene ethylene butadiene, and styrene ethylene butadiene styrene.   The packing according to claim 1, wherein the interposition piece is formed in a flat plate shape.   The packing according to claim 1, wherein the interposition piece has a cross-sectional shape of one side surface or the other side surface formed in an arc shape or a mountain shape protruding outward.