JPH0788430A - Sealing method using photosetting silicone gel - Google Patents

Abstract

PURPOSE:To provide a seal method obtaining good close adhesiveness, imparting excellent sealability and optimum to the seal use of low surface pressure by applying liquid-matter becoming a silicone gel to a seal surface and curing the same to form an integrated seal part and applying the seal part to a partner part. CONSTITUTION:A photosetting liquid org. high-molecular silicone gel compsn. having surface stickiness after curing is poured into a waterproof connector as shown by a drawing and irradiated with ultraviolet rays of 150mw/cm<2> for 10sec using a 4kw high pressure mercury lamp to obtain a waterproof connector integrated with a gel like gasket 4 within a short time. This connector can be inserted in a male connector in an extremely smooth manner and the penetration of water is not confirmed in the connected part even when the connected part is immersed in water up to a depth of about 300m. The outer diameter of the connector can be made smaller than that of a conventional one having the same function. When sealing is performed by a gel having surface stickiness, good seal can be obtained by low pressure bonding force.

Description

Detailed Description of the Invention

[0001]

[Industrial field of application] Low surface pressure for the purpose of waterproofing such as rainwater and daily life, and sealing against dust etc., with simple screw fastening, fasteners and fastening, and low tightening force with weak low surface pressure such as caulking. The present invention relates to a sealing method used for sealing surfaces such as sealing parts and covers of parts.

Specifically, a waterproof connector used for a connecting portion such as a wire harness, a connecting portion of a housing of a waterproof type telephone, a housing of a waterproof watch, a waterproof small switch, a waterproof resistor, a small waterproof motor case. ,
Port caps for artificial dialysis and water purifiers, waterproof or waterproof lamp housings, reflector cases for automobile headlamps, filter cases, laminated glass seals, peep window seals for various devices, liquid crystal panel dustproof, waterproof In various industrial fields such as mounting on a case for vibration or moisture prevention, hard disk cover seal, anti-fog mirror edge, aluminum sash end seal, toner container toner seal, etc. It can be used not only for soundproofing, insect repellent and sealing of various powders, but also for vibration damping, which is the purpose of using the gel body.

[0003]

2. Description of the Related Art Conventionally, various sealing methods for low surface pressure have been used. A method of mounting a low-hardness (Shore A hardness of about 30 or less) molded rubber (mainly compression rubber, mainly silicone rubber from the viewpoints of long-term durability and safety). Urethane, polyethylene, polypropylene, boron,
There is a method in which a sponge-like foamed cured material sheet such as fluoroethylene or silicone is punched into a gasket shape, and then attached by fitting or bonding. As the applicants of the present application filed in Japanese Patent Application No. 1-230980, by applying a two-component foam-curing type silicone rubber such as addition polymerization type to a seal surface with a two-component mixing coating robot such as a dynamic mixer, A method of forming a foamed silicone sponge gasket in the field in a short time has also been proposed. Similarly, a method of applying a two-component foam-hardening urethane to a sealing surface of a component by a two-component mixing and coating robot has been put into practical use. Hot melt rubber such as SIS and SIBS is robotically applied to the sealing surface of parts by mechanically pressurizing and mixing nitrogen gas with a gear mixer or the like at the time of heating and melting.
A method of forming a foam gasket has also been put into practical use.
(Nordson, Inc .; product name Foam MELT system) In addition, for the purpose of imparting heat resistance to the hot-melt rubber, it has been partially proposed to introduce an isocyanate group or the like to impart moisture-curing property. Further, a method of forming a foam gasket by mechanically pressurizing and mixing nitrogen gas with a moisture-curing one-component silicone resin (silicone RTV) by a gear mixer, a dynamic mixer or the like has also been proposed. . (Nordson, Inc .; product name Form MI
X system) In JP-A-4-8788, a one-part heat-curing addition reaction type silicone resin is blended with a heating foaming agent of a certain kind, and a liquid material is robot-coated, and then heat-cured to form a foam gasket. A method of making a molded product that is integrated with is shown.

Next, as an application example of the silicone gel having surface tackiness after curing in the sealing field, as shown in Japanese Patent Application Laid-Open No. 3-75055, a silicone gel is used in the medical field to waterproof the wound at the time of bathing. Examples, JP-A-59-193112 and JP-A-61-20196.
As disclosed in Japanese Patent Laid-Open No. 3 and Japanese Patent Laid-Open No. 62-42720, there is seen an example in which a silicone gel is applied to a filter case and sealed.

[0005]

The above-mentioned method requires large-scale production facilities such as a mold and a molding machine, so that the shape cannot be easily changed, and the formed rubber is soft and has a bad shape. Since it is stable, it is difficult to insert it automatically and complicated work is done manually, and there are many defective products for that. There is also a design problem that a special groove design for inserting the gasket is required for the sealing surface, and it is difficult to reduce the size of the sealing surface. Furthermore, even though it has low hardness, it is harder than sponge, so it is necessary to raise the tightening surface pressure,
In the place where surface pressure is not applied to the middle part of the tightened part, the sealability will be significantly reduced and the original waterproof performance will not be obtained, or if the part material is plastic it will deform due to the creep phenomenon due to the repulsive force of the rubber It may cause functional problems. Therefore, the molding accuracy, rigidity, design of fastening force, etc. of the parts to be sealed are very important and there are many restrictions, resulting in cost increase.
It also leads to problems such as quality variations.

[0006] Specifically, there is a method in which a hollow rubber string is inserted into a groove on the sealing surface of a component as seen in a lid of a bento box and both ends are connected with an adhesive or the like. According to this method, the above-mentioned various problems caused by the high hardness of the molded rubber are considerably improved, but the work of connecting the both ends is troublesome, and the adhesive portion is peeled off, resulting in poor quality. Also, there is a problem that the fitting work is difficult to automate like the above and requires manpower.

The above method is advantageous over the above rubber gasket in that it is sponge-like and has very low hardness, but if the foam is not completely closed cells, there will be a problem in sealing property. Further, compared with the rubber gasket, there is a problem that the shape is more unstable and the assembling and inserting work is complicated. In addition, when the sheet is punched out to form the gasket shape, the remaining punched material is wasted. On the other hand, when a string-shaped sponge is used, the bonding process of the seam portion is complicated and leaks easily. In addition, it will be even more complicated if adhesive work is required when installing the gasket.

Therefore, there is a case where a double-sided pressure-sensitive adhesive tape is attached to a sheet and punched together in order to improve these, but this leads to a considerable cost increase.

The above-mentioned method is excellent in that the sponge-like silicone gasket can be integrally molded in a short time by simply applying the pot without the expensive seal such as a die, but it is large because the material is a two-liquid type. 1. It requires a certain minimum discharge amount in order to require a complicated two-component mixing coating system, to coat after mixing directly from a dynamic mixer, or to avoid gelation.
There is a problem that it is limited to parts that can provide a seal surface width of 5 mm or more. Further, since the silicone sponge gasket has not so high tensile strength, on the contrary, there is a problem that the sponge gasket is broken at a place where a considerable tightening surface pressure such as around a screw is applied.

Further, the above-mentioned method has the same problems as the above-mentioned method in that a two-component mixed coating system is required and a wide seal surface width is required, and urethane is generally used as a sponge rubber. Although it is more advantageous than silicone in tensile strength, it has a big drawback in mass production that the reaction completion time after mixing is long. In addition, there is a problem that heat resistance is generally poor and long-term use temperature is limited to 80 ° C or lower.

The above method is more advantageous than the above method in that it is a one-liquid type, but it requires an expensive gas mixing apparatus and requires a large amount of energy for melting the hot melt resin. There is a problem, and the biggest problem is that the sponge rubber after curing is easily deformed by heat, so that it has poor heat resistance, and there is a problem in its performance even at room temperature in terms of compression recovery.

Since the above method is moisture-curable, it is necessary to devise a device for shutting out moisture in the above-mentioned gas mixing device, which has a drawback that the device itself becomes expensive. Also,
There is also a problem that it takes a very long time of several days to several weeks to completely cure the hot melt agent.

In the above-mentioned method, the apparatus is also expensive as in the above-mentioned method, and since moisture curing type silicone RTV is mainly used as a material, it takes several days to several weeks or more for complete curing. In addition, the cured product of the silicone RTV foam has a drawback in that it has a compression set.

Further, in the foaming due to the reaction curing of ,, and, or in the mechanical foaming, the bead diameter after discharging from the nozzle swells, so that there is a material problem that a gasket having a very small bead diameter cannot be formed. is there. In addition, in the case of mechanical foaming, a gas is dissolved and mixed in a liquid under pressure, and the mixture is returned to normal pressure and applied in a bead shape.
If it is too thin, the gas escapes into the atmosphere before curing, and it does not cure into a sponge well. In the case of the reaction-curing foaming type as well, if the applied bead is too thin, the gas escapes into the atmosphere before curing, and the sponge-like curing does not occur properly. Further, when attempting to mold a thin low surface pressure gasket of 2 mm or less, the initial coating bead diameter must be smaller than that, which is difficult from the viewpoint of coating technology.

Therefore, in parts such as mobile phones, waterproof watches, waterproof small switches, waterproof small resistors, etc. that are extremely small and do not have a seal face width, it is impossible to seal with a sponge gasket, and a molded rubber gasket was used. Is the reality.

In addition to the common problems such as the bead diameter expansion after coating as described above, the above method requires heat treatment at 120 ° C. for a considerably high temperature of 30 minutes or a long time because it is a heat curing. Therefore, it cannot be applied to plastic parts, and there is a problem that the curing process becomes long.

Next, the silicone gels described in each of the above-mentioned patent publications are of the two-component mixing type or the heat-curing type, and the two-component mixing work and the heating step are required for application, so that the work is required. There is a problem with sex. Generally, these silicone gels are used as a vibration absorbing material for sports shoes, as a potting agent for absorbing vibration and preventing moisture when mounting electronic boards on automobiles, and as a cushioning material for touch panel displays. The reality is that there is nothing more than that.

Further, the conventional technique and its problems will be examined for each of various low surface pressure seal components.

<Waterproof Connector> Conventionally, as shown in FIG. 1, an oil bleed type self-lubricating low hardness silicone molded rubber packing has been used in order to reduce frictional resistance when the connector is inserted. Further, in order to automate the work of inserting the rubber packing, Japanese Patent Laid-Open No. 63-
As disclosed in Japanese Patent No. 221,568, a method of making a molded product in which rubber packing is integrated by a two-color molding method has been proposed. In all of these methods, rubber packing is used, and since the hardness is high, in order to supplement the adhesion force, a special shape such as a double peak shape or a triple peak shape as shown in FIG. 1 is used.
In addition, the rubber does not go smoothly due to the resistance of the rubber at the time of insertion, and in order to supplement the sealing performance, a rubber that is self-lubricating is used with an oil bleed type rubber.
With such a complicated mechanism and structure, both the insertability and the sealability of the connector are compatible. Another problem is that since the rubber having such a complicated shape is inserted in the vertical direction, the size of the entire rubber is increased by the thickness of the rubber.

<Port packing of artificial dialysis and water purifier> As for the current port seal, a low hardness silicone rubber packing is inserted into the seal groove as shown in FIG. 3 and is sealed by screw tightening. Is the current situation. Originally, if the screw structure is eliminated as shown in FIG. 4 and the sealing property is secured only by ultrasonic fusion after crimping, the mold structure at the time of forming the port portion becomes simple, and only the screw thread is required. Although there is an advantage that it can be made thin, there is a problem that if silicone rubber is used, if a uniform and strong crimping force cannot be secured against the rubber packing, leakage will occur. The current situation is that there is no choice but to take it.

<Sealing of waterproof mobile phone housing>
A low hardness silicone molded rubber gasket is used to seal the housing of the current waterproof mobile phone. For this reason, the complexity of the gasket assembling work described so far, and the width of the sealing surface becomes as large as at least 2.5 mm because rubber is inserted. To secure the tightening surface pressure to the gasket, a strong fastener structure and screwing are required. In addition, defective sealing occurs due to distortion of the molded product and variations in surface pressure. When used for a long time due to the repulsive force of the gasket, there was a problem that the molded product was distorted. (See Figure 5)

<Hard Disk> When installing a hard disk cover, at present, a molded rubber gasket of silicone is attached, or a dust seal or an airtight seal is provided by sandwiching a foamed boron or fluorine gasket with a double-sided tape.
Moisture-proof and anti-vibration. However, in the case of silicone rubber, since the repulsive force is strong, it is necessary to increase the rigidity of the case body or increase the number of tightening screws. Generally, aluminum die-cast products are used as case materials.

When a sponge gasket is used, a zinc chromate-plated press steel plate or the like is generally used as a hard disk case and the cost of the case body is reduced. However, an expensive sponge sheet is further punched and further processed. Since the laborious process of sticking the double-sided tape on the gasket is performed, not only the gasket itself becomes very expensive, but also the assembling work is complicated and time-consuming.

<Mounting of Liquid Crystal Panel Case> When mounting the liquid crystal panel on the case body, depending on the type, the silicone rubber packing is sandwiched for the purpose of vibration proof, moisture proof and dust proof as shown in FIG. is there. However, in this case, since the liquid crystal panel itself has high flexibility, there is a problem that the adhesiveness cannot be properly obtained or the anti-vibration effect is small unless a considerably soft rubber packing is used. Another problem is that the cost is high because the molded packing is attached.

[0025]

[Means for Solving the Problems] A liquid substance which becomes a silicone gel having surface tackiness after being cured by light irradiation at a sealing portion of a low surface pressure portion for the purpose of sealing waterproofing such as rainwater and daily life waterproofing and dust. The above-mentioned problem was solved by applying the above-mentioned to the sealing surface of the seal part, and then curing by light irradiation to form a seal part in which the silicone gel seal material is integrated, and then assembling it with the mating part to be sealed. .

[0026]

DETAILED DESCRIPTION OF THE INVENTION Examples of the photocurable liquid organic polymer silicone gel composition having surface tackiness after curing used in the present invention include those described in JP-A-64-14226, The applicant of the present invention is December 16, 1992
The photocurable silicone composition applied on the date (Japanese Patent Application No. 4-361707) is used.

Specifically, for example, a vinyl group-containing isocyanate, (meth) acrylic acid anhydride, (meth), is added to a terminal amino group-containing organosiloxane obtained by adding a terminal silanol organosiloxane to an organoalkoxycinolane having an amino group. Examples thereof include a silicone composition comprising a photocurable organopolysiloxane obtained by reacting one or several kinds of acrylic acid halides and a photopolymerization catalyst.

Next, as a coating method for applying the silicone gel liquid material according to the present invention to a non-adhered body, it is applied in an arbitrary shape directly from the robot-controlled application nozzle onto the sealing surface of the component. Therefore, it can be used at very low cost and has excellent productivity. Other methods such as screen printing and stamping can also be used depending on the shape of the component.

Here, the mechanism for sealing the low surface pressure sealing component by using the gel having surface tackiness of the present invention is summarized as follows.

If the relationship between the internal pressure and the external pressure on the seal surface is shown in FIG. 9, the respective factors shown in FIG. 9 can maintain the seal as long as the expression (1) is maintained. δP ≦ (μ1 + μ2) kP + Pg (1) where δP: internal pressure or external pressure in the part μ1 ・ kP: resistance due to friction of seal face 1 μ2 ・ kP: resistance due to friction of seal face 2 Pg: repulsion of gasket material Due to the force (due to the hardness and elastic modulus of the material), the pressure resistance conditions can be listed as follows.・ Gasket material has high hardness ・ Gasket material has high elastic modulus ・ Gasket material has large friction coefficient ・ Gasket width is wide ・ Sealing surface tightening surface pressure is high

That is, in the sealing of low surface pressure parts, factors such as hardness and elastic modulus of the gasket material and tightening surface pressure are very low. Therefore, the condition for obtaining good pressure resistance among them is the gasket. There is no effective means other than raising the coefficient of friction between the material and the sealing surface. Therefore, it can be said that high surface tackiness is very suitable for the requirements.

In the case of non-adhesive gaskets such as ordinary molded rubber and sponge gaskets, as shown in FIG. 10a, when the sealing surface of the component is opened due to pressure or vibration, in almost all cases, a slight compression recovery (δL1 ), It does not show good followability. However, the adhesive gel exhibits high followability (δL2) with respect to the movement of the sealing surface due to its surface adhesiveness, low modulus and high elongation.

In general, when the gasket material is integrated with the parts to be sealed, there are quite a few cases in which the gasket material is integrated (prevents falling off) by adhesion or adhesion in addition to mechanical connection such as grooves.
It is very troublesome because it requires work such as applying an adhesive and curing (drying) it, or attaching a double-sided adhesive tape to peel off the release paper. Therefore, since the system of the present invention has surface tackiness on the gel material after curing, it can be firmly adhered and integrated with the object to be sealed by its surface tackiness simply by curing after application.

Moreover, ordinary PE, PP, PPS, PTF
Adhesion and sticking to difficult-to-adhere materials such as E are quite difficult, but particularly when the silicone gel material of the present invention is used, it adheres to these difficult-to-adhere materials without problems.

[0035]

EXAMPLES The present invention will be specifically described below with reference to examples. First, a method for preparing a silicone composition in which the cured product used in the present invention has surface tackiness will be described.

Synthesis Example Terminal silanol dimethyl siloxane (molecular weight 3000
0) Add 7.5 g of aminoethylaminopropylmethoxysilane to 3000 g, and add 2 at 100 ° C. under nitrogen substitution.
Stir for hours. Then, vacuum is applied to remove excess aminoethylpropyltrimethoxysilane, and the viscosity is 1450
A base polymer of one-terminal aminopolydimethylsiloxane having 0 cps was obtained. Next, 0.17 g of methacrylic acid anhydride is added to 100 g of this base polymer, and the mixture is stirred at room temperature for 1 hour while purging with nitrogen. Further, 0.5 g of 1-hydroxycyclohexyl phenyl ketone was added as a photocuring catalyst to obtain an ultraviolet curable silicone gel composition S-1. Further, 100 g of the composition S-1 was added with fumed silica; R-
972 (manufactured by Nippon Aerosil Co., Ltd.) was added, and the mixture was stirred under reduced pressure to increase viscosity and obtain a composition S-2 having suppressed fluidity.

Example 1 The composition of S-1 was applied to the waterproof connector shown in FIG. 2 and robot-controlled nozzle outer diameter 1.5 mm (inner diameter 1.
It was poured from a nozzle of 0 mm) to a height of 2 mm. When this was irradiated with a 4 kW high-pressure mercury lamp at 150 mW / cm ² for 10 seconds, a waterproof connector in which a gel gasket was integrated was formed in a short time. When this was fitted with a male connector, it was able to be inserted very smoothly, and no water intrusion was observed under immersion in water up to 300 mm. Also, the outer shape of the connector could be made smaller by 4 mm than the conventional one having the same function.

When the method of the present invention for sealing with a gel having surface tackiness is carried out, the shape can be changed to the structure shown in FIG. 2 because good sealing can be achieved with a low pressure. As a result, the overall size can be reduced, and the insertability, sealability, and quality stability are improved, and the removability is not impaired.

Example 2 Composition S-2 was robot-controlled in the gasket groove of the port portion of the filter for artificial dialysis shown in FIG. 4, and the bead diameter was 2.0 mm from the nozzle having a nozzle outer diameter of 2.0 mm (inner diameter 1.5 mm). The gasket shape was drawn. To this, 4
When irradiated with a kW high-pressure mercury lamp at 150 mW / cm ² for 10 seconds, a port portion of the artificial dialysis filter integrated with a gel gasket was formed in a short time. The tube of the filter body was inserted into this, and the seal test was conducted by fusion with ultrasonic fusion, but no leakage occurred.

Example 3 Composition S-2 was applied to the sealing surface of the case of the mobile phone shown in FIG.
A gasket having a bead diameter of 1.0 mm was drawn from a nozzle having an inner diameter of 1.0 mm. When this was irradiated with a 4 kW high pressure mercury lamp at 150 mW / cm ² for 10 seconds, a case of a mobile phone in which a gel gasket was integrated was formed in a short time. As a result, the conventional seal surface width of 3.0 mm required was 2.0 mm. Further, in addition to the conventional mechanical fastener structure, which has been screwed at two places, the seal structure of the present invention can provide sufficient sealability only with the fastener structure. In addition, the conventional type is 80
When heat aging at 100 ° C for 100 hours, the ABS case with a maximum of 0.8 mm on the sealing surface was deformed,
No deformation was observed in the seal structure of the present invention. Further, the cooling and heating cycle of -20 ° C to 80 ° C was repeated, but the followability was good and no water leakage occurred.

Example 4 Composition S-2 was robot-controlled on the sealing surface of the hard disk cover shown in FIG.
m (inner diameter 1.0 mm) nozzle to bead diameter 1.0 mm
The gasket shape was drawn. When this was irradiated with a 4 kW high pressure mercury lamp at 150 mW / cm ² for 10 seconds, a hard disk cover integrated with a gel gasket was formed. As a result, the conventional sealing surface width of 2.0 mm required 1.5 mm in the sealing method of the present invention, and the sealing property was good. In addition, it was possible to sufficiently seal with a simple screw fastening, and no deformation due to the repulsive force of the gasket of the pressed steel plate was observed. Furthermore, the system of the present invention is very productive in actual line production,
Moreover, the production cost was reduced.

Example 5 The composition S-2 was applied to the sealing surface of the case part to which the liquid crystal panel shown in FIG. 8 is attached, and the bead diameter was 1.0 mm from the nozzle of robot-controlled nozzle outer shape 1.5 mm (inner diameter 1.0 mm). The gasket shape was drawn. To this 4k
When irradiated with a W high-pressure mercury lamp at 150 mW / cm ² for 10 seconds, a case part of the liquid crystal panel in which a gel gasket was integrated was formed. A liquid crystal panel was attached to this, but it adhered well with a very weak pressure bonding force, high airtightness was obtained, and the damage to the liquid crystal panel was small. It was also excellent in vibration absorption.

[0043]

The effects of the system for sealing a low surface pressure sealing component using the gel having surface tackiness according to the present invention will be summarized as follows. Despite its low hardness, it has a large frictional force with the sealing surface, so it has excellent pressure resistance. The surface adhesiveness can cover the compression recovery property. PE and P can be integrated with the parts to be sealed without adhesive treatment.
It also exhibits adhesion to difficult-to-bond materials such as P, PPS, and PTFE. Although it overlaps with the above, it has an extremely low hardness and a high elongation, so that even with a slight surface pressure, it can be well adhered to the mating sealing surface and has excellent sealing properties, making it ideal for original low surface pressure sealing applications. Since the elastic modulus is very low and the elongation is high, the shape changes with a slight binding force, so the surface accuracy of the sealing surface of the sealed portion is not so required. In addition, even if there is unevenness in the height of the coated beat (especially at the seam portion), good sealing can be achieved. Even if the gasket layer is compressed due to excessive tightening around the screws and caulking parts, bead breakage is unlikely to occur due to the high elongation. Changes in physical properties due to temperature changes are extremely small, and stable physical properties are maintained over a wide temperature range. Since there is almost no volume shrinkage at the time of curing, it is possible to sufficiently cope with a narrow sealing surface with a bead width of 1 mm or less. Despite being a one-part type, it cures at room temperature in a short time and has excellent line productivity. (10) Since it does not require heating, it can be used with various plastic materials. (11) Since it is not necessary to shut off the air unlike the moisture curing type. In addition to robot coating, various coating methods such as screen printing, stamping and stencil ring can be used. (12) Since the robot coating system does not require an expensive and troublesome tool such as a mold for forming the gasket shape, the shape can be easily changed.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a conventional waterproof connector.

FIG. 2 is a cross-sectional view showing a waterproof connector having a surface adhesive gel layer according to the present invention.

FIG. 3 is a cross-sectional view showing a port portion of a conventional artificial dialyzer.

FIG. 4 is a cross-sectional view showing a port portion of an artificial dialyzer having a surface adhesive gel layer according to the present invention.

FIG. 5 is a cross-sectional view showing a conventional mobile phone sealing surface.

FIG. 6 is a cross-sectional view showing a mobile phone sealing surface on which a surface adhesive gel layer according to the present invention is formed.

FIG. 7 is a cross-sectional view showing a liquid crystal panel having a surface adhesive gel layer according to the present invention.

FIG. 8 is a cross-sectional view showing a seal part of a hard disk having a surface adhesive gel layer according to the present invention.

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[Procedure amendment]

[Submission date] May 10, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Brief description of the drawing

[Correction method] Change

[Correction content]

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a conventional waterproof connector that does not use the present invention.

FIG. 2 is a cross-sectional view of a waterproof connector having a surface adhesive gel layer according to the present invention.

FIG. 3 is a cross-sectional view of a port portion of a conventional artificial dialyzer that does not use the present invention.

FIG. 4 is a cross-sectional view of a port portion of an artificial dialyzer in which a surface adhesive gel layer according to the present invention is formed.

FIG. 5 is a partial cross-sectional view of a mobile phone showing a conventional waterproof seal portion not using the present invention.

FIG. 6 is a partial cross-sectional view of a mobile phone showing a waterproof seal portion having a surface adhesive gel layer according to the present invention.

FIG. 7 is a cross-sectional view of a liquid crystal panel having a surface adhesive gel layer according to the present invention.

FIG. 8 is a sectional view of a hard disk having a surface adhesive gel layer according to the present invention.

FIG. 9 is an explanatory diagram mechanically simplifying the relationship between the flange portion, the sealing material, and the pressure.

Claims (2)

[Claims] 1. A liquid sealing material, which becomes a silicone gel having surface tackiness after being cured by irradiation with light, is used as a sealing component at a sealing portion of a low surface pressure portion for the purpose of sealing waterproofing such as rainwater and daily life waterproofing and dust. After applying on the sealing surface,
A method of sealing a component, comprising forming a seal component in which the silicone gel seal material is integrated by curing by light irradiation and then assembling with a mating component to be sealed. 2. A sealing method for a component, wherein the coating method according to claim 1 is applied in an arbitrary shape directly from a robot-controlled coating nozzle on a sealing surface of the component.