KR20100104742A - Foam tape for door and sliding door using the same - Google Patents

Abstract

PURPOSE: A foam tape for a door, and a sliding door using thereof are provided to remove the usage of a masking tape by the improved adhesive force between a metal frame and the foam tape, and to simplify the manufacturing process of the door. CONSTITUTION: A foam tape(100) for a door for attaching a metal frame and a door plate comprises the following: a foam support layer(10); a silicone adhesive layer(20) formed on one side of the foam support layer to be attached to the metal frame; and an acrylic adhesive layer(30) formed on the other side of the foam support layer to be attached to the door plate. The foam support layer is an acryl foam.

Description

FOAM TAPE FOR DOOR AND SLIDING DOOR USING THE SAME}

The present invention relates to a foam tape for a door and a sliding door using the same, and more particularly, a frame and a foam tape are bonded through a silicone adhesive layer to have excellent adhesion, and a door foam capable of shortening the manufacturing process of the door. It relates to a tape and a sliding door using the same.

Doors for opening and closing doors of subways (trains), buildings, etc. are sliding type and sliding type according to the method. The sliding door opens and closes the doorway by sliding the door left and right by manual / automatic. For example, a subway station is provided with a sliding door (usually a screen door) for the purpose of protecting passengers until the subway arrives and the door is opened.

Subway sliding doors must not only withstand the wind pressure when the subway enters and exits, but also withstands external physical shocks and vibrations. Accordingly, the subway sliding door has a structure in which a door plate (glass) is attached to a metal frame (aluminum frame). At this time, the metal frame and the door plate are attached by a foam tape in consideration of the buffering properties between the metal frame and the glass and the productivity of the door. That is, a foam tape is interposed between the metal frame and the door plate. In addition, the foam tape is an acrylic foam support layer; And an acrylic foam tape having an acrylic adhesive layer formed on both sides of the acrylic foam support layer is mainly used. At this time, since the metal frame may cause an accident that threatens the safety of passengers by causing static electricity, ceramic powder is coated on the surface of the metal frame for the purpose of preventing static electricity and insulation.

However, since the acrylic adhesive layer does not easily adhere to the surface coated with the ceramic powder, that is, the ceramic powder coating layer, the adhesive strength is reduced. Accordingly, in the related art, when the ceramic powder is coated, a masking tape is attached to the surface to which the acrylic foam tape is to be attached, and then the ceramic powder is coated. And after removing the masking tape (Masing Tape), the acrylic foam tape was attached to the adhesive force. As such, in the related art, the adhesive force between the metal frame coated with the ceramic powder and the foam tape is poor, and thus, masking tape must be used, and the process of attaching and removing the masking tape involves the manufacture of the door. There is a problem that takes a long time.

Accordingly, an object of the present invention is to provide a foam tape for a door having a good adhesion between the metal frame and the foam tape and to shorten the manufacturing process of the door, and a sliding door using the same.

The present invention to achieve the above object,

In the door foam tape for attaching the metal frame and the door plate,

Foam support layer;

A silicon adhesive layer formed on one surface of the foam support layer and attached to the metal frame; And

It is formed on the other surface of the foam support layer, and provides a foam tape for a door comprising an acrylic adhesive layer attached to the door plate.

In addition, the present invention,

Metal frame; Door plate; And a foam tape attaching the metal frame and the door plate to each other.

The foam tape,

Foam support layer;

A silicon adhesive layer formed on one surface of the foam support layer and attached to the metal frame; And

A sliding door is formed on the other surface of the foam support layer and includes an acrylic adhesive layer attached to the door plate.

At this time, the foam support layer is preferably an acrylic foam. In addition, the silicone adhesive layer may be laminated with a foam support layer after corona treatment. According to a preferred embodiment, the silicone adhesive layer comprises a silicone resin, a silicate resin (eg MQ resin, etc.) and a catalyst.

According to the present invention, the metal frame and the foam tape are attached through the silicone adhesive layer to have excellent adhesion. In addition, the use of the masking tape is eliminated due to the excellent adhesion to the metal frame, which has the effect of shortening the manufacturing process of the door.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

The accompanying drawings show a preferred embodiment of the present invention, Figure 1 shows a cross-sectional configuration of the foam tape according to the present invention, Figure 2 illustrates a sliding door according to the present invention subway sliding door It is a cross section shown. And Figure 3 shows the attitude on the use of the sliding door according to the present invention.

First, referring to FIGS. 1 and 2, the foam tape 100 according to the present invention includes a foam support layer 10; A silicon adhesive layer 20 formed on one surface of the foam support layer 10; And an acrylic adhesive layer 30 formed on the other surface of the foam support layer 10, that is, the surface opposite to the surface on which the silicon adhesive layer 20 is formed.

At this time, the foam support layer 10 as having a buffer (shock absorbency), for example, a resin foam on a sheet made of foamed resin, such as acrylic, polyurethane, polypropylene, polyethylene can be used. The method of manufacturing the foam support layer 10 is not particularly limited, and a foam manufacturing method widely used in manufacturing a conventional foam tape may be applied. Preferably, the foam support layer 100 uses an acrylic foam that is advantageous in terms of adhesion to the acrylic adhesive layer 30. In this case, the acrylic foam may be prepared from an acrylic resin composition including an acrylic resin, a photoinitiator, a crosslinking agent, a foaming agent and a filler. According to a preferred embodiment, the acrylic foam is from an acrylic resin composition comprising 0.1 to 2 parts by weight of photoinitiator, 0.1 to 1.5 parts by weight of crosslinking agent, 2 to 8 parts by weight of blowing agent and 1 to 5 parts by weight of filler based on 100 parts by weight of acrylic resin. Can be prepared. In this case, although not particularly limited, the acrylic resin may be a copolymer of an acrylic monomer selected from acrylate, acrylic acid, and the like, and the photoinitiator may be α, α-methoxy-α-hydroxyacetophenone (commercially available product divalent). Cure-651) and the like can be used. The crosslinking agent may be 1,6-hexanediol dike relate (HDDA) or the like, the blowing agent may be a chemical blowing agent or glass bubble, and the filler may be selected from inorganic materials such as silica and calcium carbonate. Can be.

In addition, the silicone adhesive layer 20 is formed from a silicone adhesive composition containing a silicone resin. The silicon adhesive layer 20 is attached to the metal frame 200 of the door (D). Specifically, the silicon adhesive layer 20 is attached to the ceramic powder coating layer 220 coated on the metal frame 200. According to the present invention, the silicon adhesive layer 20 has excellent adhesion with the metal frame 200. Specifically, when ceramic powder is coated on the metal frame 200, the ceramic powder coating layer 220 and the foam tape 100 have excellent adhesive strength even without using a masking tape. Thus, according to the present invention, the use of the masking tape is eliminated, and the manufacturing process of the door D is improved. That is, the manufacturing process of the door D is shortened by eliminating the attaching and removing process of the masking tape.

In addition, the silicone adhesive layer 20 is formed by coating a silicone adhesive composition on the foam support layer 10, or the silicone adhesive composition is molded into a film or sheet, and then laminated on the foam support layer 10 Can be formed. Preferably, it is preferably formed by plywood.

At this time, when the silicon adhesive layer 20 is molded into a film or sheet, and then laminated on the foam support layer 10, the adhesion between the two should be achieved. That is, the interface adhesion between the foam support layer 10 and the silicon adhesive layer 20 should be secured. In order to secure the interfacial adhesion between the foam support layer 10 and the silicon adhesive layer 20, a method of applying a primer therebetween may be considered. However, the use of primers can lead to an increase in material costs and additional processes, resulting in lower productivity.

Thus, according to a preferred embodiment of the present invention, when the silicone adhesive layer 20 is molded into a film or sheet, it is preferable that the corona treatment on the foam support layer 10 is then laminated. According to the present invention, when the silicon adhesive layer 20 is corona-treated as described above, it has excellent interfacial adhesion with the foam support layer 10. That is, in the case of corona treatment, the foam support layer 10 and the silicon adhesive layer 20 have excellent interfacial adhesion without using a primer. The corona treatment is preferably performed at a current of 0.1 to 10 A, and a processing speed of 0.5 to 5 M / min (meter / minute). At this time, in the corona treatment, if the current is less than 0.1 A or the processing speed is less than 0.5 M / min, the effect of the corona treatment is insignificant, making it difficult to achieve excellent interfacial adhesion, the current exceeds 10 A or the treatment speed is 5 M / If it exceeds min, deformation and / or discoloration of the silicon adhesive layer 20 may occur. In addition, according to an exemplary embodiment of the present invention, after the silicon adhesive layer 20 is corona treated as described above to have a better interfacial adhesion with the foam support layer 10, the plasma treatment may be further performed as necessary. Can be.

The silicone adhesive composition constituting the silicone adhesive layer 20 includes a thermosetting type and a photo curing type (UV curing type). The silicone adhesive layer 20 is formed from a silicone adhesive composition containing a silicone resin as described above, wherein the silicone resin may be a solid content of 50% by weight to 65% by weight and a viscosity of 20,000 to 80,000 cps. have. Such silicone resins may be diluted with aromatic organic solvents such as toluene and xylene to have a viscosity of 5,000 to 50,000 cps. In addition, although the said silicone resin does not specifically limit, it is preferable that weight average molecular weights (Mw) are 5,000-1,500,000. In this case, when the weight average molecular weight (Mw) of the silicone resin is less than 5,000, the adhesive strength may be lowered. If the weight average molecular weight (Mw) is greater than 1,500,000, the flexibility may be lowered, and the adhesion strength of the coating layer 220 and the plywood may be reduced.

According to a preferred embodiment of the present invention, the silicone resin may be represented by the following formula (1). The silicone resin represented by Chemical Formula 1 may be usefully applied to the present invention by achieving good adhesion with the ceramic powder coating layer 220.

[Formula 1]

In Formula 1, R ₁ is OH, a methyl group or a vinyl group, R ₂ is an alkyl group, a vinyl group or a phenyl group. At this time, the alkyl group is not particularly limited, but may be selected from alkyl groups having 1 to 6 carbon atoms, and specific examples thereof include methyl group, ethyl group and propyl group. And in Formula 1, n is an integer of 1 or more. In this case, in Chemical Formula 1, n is preferably an integer of 10 to 3,000.

In addition, the silicone pressure-sensitive adhesive composition constituting the silicone pressure-sensitive adhesive layer 20 may include a silicone resin, a silicate resin, and a catalyst (platinum catalyst, etc.).

The silicate resin, as having a SiO unit in the molecule, for example, M units (R _'3 SiO _1/2 units), D units (R' ₂ SiO _2/2 units), T units (R'SiO _{3 / 2} units) and the Q unit (SiO _4/2 units) may be used having at least one unit selected from and the like. R 'is an alkyl group (methyl group, ethyl group, propyl group, etc.) here. As a specific example, the silicate resin may be a polymer silicate resin (MQ resin) having M units and Q units, a polymer silicate resin (MQT resin) having M units, Q units and T units, and M units, Q units and D units. Polymer silicate resin (MQD resin) etc. which have can be used. Among these, it is preferable to use MQ resin. Silicate resins such as MQ resins can be purchased and used by Dow Corning Corporation. The silicate resin preferably has a number average molecular weight of 100 to 50,000, more preferably 500 to 15,000.

More preferably, the silicone adhesive composition may include 0.2 to 25.0 parts by weight of the silicate resin (eg, MQ resin) and 0.1 to 5.0 parts by weight of the catalyst (platinum catalyst) based on 100 parts by weight of the silicone resin. When the silicone adhesive composition is formed as described above, the adhesion with the ceramic powder coating layer 220 is further improved. At this time, when the silicate resin is less than 0.2 parts by weight with respect to 100 parts by weight of the silicone resin, adhesion strength may be reduced when the plywood is laminated to the ceramic powder coating layer 220 due to the lack of flexibility of the adhesive composition. In addition, when the silicate resin exceeds 25.0 parts by weight with respect to 100 parts by weight of the silicone resin, the synergistic effect due to excess content is not so great, the content of the silicone resin is relatively small, the adhesive strength with the ceramic powder coating layer 220 is lowered Can be. In addition, if the content of the catalyst (platinum catalyst) is less than 0.1 part by weight with respect to 100 parts by weight of the silicone resin, the reactivity (curing) is not preferable, and if it exceeds 5.0 parts by weight, the synergistic effect due to the excessive content is not so great and the excess of the catalyst is excessive. Presence can reduce the adhesion.

According to a more preferable aspect of the present invention, the silicone pressure-sensitive adhesive composition constituting the silicone pressure-sensitive adhesive layer 20 is 5 to 15.0 parts by weight of a silicate resin (e.g. MQ resin) and a catalyst (platinum catalyst) based on 100 parts by weight of the silicone resin. It is preferable to include 0.5 to 3.0 parts by weight. When the silicone adhesive composition is thus constituted, it has better adhesion (peel strength) with the ceramic powder coating layer 220. That is, when the silicone pressure-sensitive adhesive composition according to a more preferred embodiment of the present invention, the composition as described above, the adhesion to the ceramic powder coating layer 220 is further improved by securing the flexibility, the adhesive strength is increased to increase the ceramic powder coating layer ( The adhesive force (peel strength) with 220 is further improved.

According to another preferred embodiment of the present invention, the silicone adhesive composition constituting the silicone adhesive layer 20 may be a silicone resin, a silicate resin (e.g. MQ resin, etc.), a Si-H polymer, a curing accelerator (curing catalyst) and a catalyst. It is preferable to include (platinum catalyst). And the pressure-sensitive adhesive composition may further include an aromatic organic solvent such as toluene, xylene. More specifically, although not particularly limited, 5 to 15.0 parts by weight of the silicate resin (for example, MQ resin, etc.), 0.1 to 10 parts by weight of Si-H polymer, and curing accelerator (curing catalyst), based on 100 parts by weight of the silicone resin 2 parts by weight and 0.5 to 3.0 parts by weight of a catalyst (platinum catalyst) may be included. At this time, the Si-H polymer acts as a crosslinking agent, which can be used as long as it has a hydrogen atom bonded to silicon in the molecule. For example, Si-H polymers include methylhydridopolysiloxanes, dimethylsiloxane-methylhydridosiloxane copolymers, cyclic methylhydrogenpolysiloxanes, cyclic dimethylsiloxane-methylhydridosiloxane copolymers, and tetrakis (dimethylhydrogensiloxane One or more selected from silane and the like can be used. And the curing accelerator may be selected from, for example, peroxide-based, metal compound-based or amine-based. For example, dibenzoyl peroxide may be used as the peroxoxide system, and dibutyltin diacetate, dibutyltin dilaurate, tin tripropyl acetate, tin octoate, tin oxalate, and tin na may be used as the metal compound system. It may be selected from phthalate and the like, the amine-based may be selected from triethyl amine, ethylenetriamine and the like.

On the other hand, the acrylic adhesive layer 30 is formed from an acrylic adhesive composition containing an acrylic resin. The acrylic adhesive layer 30 is attached to the door plate 300. In general, the acrylic adhesive layer 30 has good adhesion with the door plate 300. In this case, the acrylic pressure-sensitive adhesive layer 30 is formed by coating an acrylic pressure-sensitive adhesive composition on the foam support layer 10, or the acrylic pressure-sensitive adhesive composition is molded into a film, and then laminated on the foam support layer 10. Can be formed. In addition, when the acrylic adhesive layer 30 is molded into a film, it is preferable that the acrylic adhesive layer 30 is laminated on the foam support layer 10 after the corona treatment. Corona treatment may be carried out under the conditions described above. As the acrylic pressure-sensitive adhesive composition constituting the acrylic pressure-sensitive adhesive layer 30 can be used as usual, which includes a thermosetting type and photo-curing type (UV curing type).

The acrylic adhesive layer 30 may be formed by heat curing an acrylic adhesive composition including 0.005 to 0.1 parts by weight of a curing agent based on 100 parts by weight of an acrylic resin polymerized with acrylate and acrylic acid. At this time, the acrylic resin is preferably polymerized by using 5 to 25 parts by weight of acrylic acid based on 100 parts by weight of acrylate. That is, the polymerization of the acrylate: acrylic acid = 100: 5 to 20 by weight ratio is advantageous in the adhesive force with the door plate 300. More preferably, 10-15 weight part of acrylic acid is used with respect to 100 weight part of acrylate, and it superposed | polymerized.

Foam tape 100 according to the present invention described above is interposed between the metal frame 200 and the door plate 300 constituting the door (D), the metal frame 200 and the door plate 300 Attach. At this time, the foam tape 100 and the metal frame 200 has excellent adhesion by the silicon adhesive layer 20 as described above. That is, even when the ceramic powder coating layer 220 is formed on the metal frame 200, the foam tape 100 and the ceramic powder coating layer 220 are firmly adhered through the silicon adhesive layer 20. In addition, the foam tape 100 and the door plate 300 has excellent adhesive strength by the acrylic adhesive layer (30).

On the other hand, the sliding door (D) according to the present invention is a metal frame 200; Door plate 300; And a foam tape 100 attaching the metal frame 200 and the door plate 300 to each other. At this time, the foam tape 100 is composed of a foam tape 100 of the present invention as described above.

The sliding door (D) according to the present invention is to open and close the doorway of a subway (train) or a building in a sliding manner, preferably a subway that is installed for the purpose of protecting passengers until the door arrives when the subway arrives. Sliding doors (usually screen doors) are exemplified.

The metal frame 200 includes a metal frame body 210. The metal frame 200 preferably includes a metal frame body 210 and a ceramic powder coating layer 220 coated on the surface of the frame body 210. In this case, the frame body 210 may be made of aluminum, nickel, tin or an alloy containing them, preferably made of aluminum or aluminum alloy. The ceramic powder coating layer 220 is for antistatic and / or insulation, which may be configured as usual.

In addition, the door plate 300 may be made of glass, plastic (acrylic, etc.), fiber-reinforced plastics (FRP), and the like, and preferably may be made of glass as usual.

The metal frame 200 and the door plate 300 is attached by the foam tape 100 according to the present invention. Specifically, the silicone adhesive layer 20 of the foam tape 100 is attached to the metal frame 200, and the acrylic adhesive layer 30 of the foam tape 100 is attached to the door plate 300. At this time, in attaching the foam tape 100 to the metal frame 200, that is, the ceramic powder coating layer 220, it is good to attach at a temperature of 20 ~ 30 ℃, preferably 22 ~ 28 ℃. For example, at a temperature of 10 ° C. or lower, such as in winter, the silicon adhesive layer 20 is preheated to a temperature of 20 to 30 ° C. (preferably 22 to 28 ° C.) using a torch or a heater lamp, and then attached. Good to do. In addition, it is preferable to pressurize at a pressure of 0.2 ~ 3.0kg / ㎠ using a roller or the like when attaching. When attached under such temperature and pressure conditions, excellent adhesion between the metal frame 200, that is, the ceramic powder coating layer 220 and the foam tape 100 can be achieved. In addition, the door plate 300 and the acrylic pressure-sensitive adhesive layer 30 is attached to the above it is good to perform at the above temperature and pressure conditions.

In addition, the door D is slid in the left and right directions (see FIG. 3), in which case a cushioning material 400 may be installed in the door D to prevent the doors D from impacting each other. The buffer 400 may be selected from rubber or synthetic resin foam.

Hereinafter, the Example of this invention is illustrated. The following examples are merely provided to aid the understanding of the present invention, whereby the technical scope of the present invention is not limited.

Example 1

Production of foam support layer (acrylic foam production)

89 parts by weight of 2-ethyl hexyl acrylate and 11 parts by weight of polar monomer acrylic acid were thermally polymerized in a 1 liter glass reactor to obtain a syrup having a viscosity of 3500 cP. 0.5 parts by weight of Igacure-651 (α, α-methoxy-α-hydroxyacetophenone) as a photoinitiator and 0.35 parts by weight of 1,6-hexanediol diacrylate (HDDA) as a crosslinking agent based on 100 parts by weight of the obtained syrup. After stirring sufficiently. And 5 weight part of glass bubbles as a foaming agent, and 2 weight part of silica as a filler were mixed here, and it stirred until it became uniform enough. Next, the mixture was degassed under reduced pressure using a vacuum pump, and then 1.9 mm thick acrylic foam (foam support layer) was prepared using a micro bar.

acryl Adhesive layer  Produce

10 parts by weight of polar monomer acrylic acid was solution-polymerized in a 1 liter glass reactor to 100 parts by weight of 2-ethyl hexyl acrylate to prepare a syrup having a weight average molecular weight of about 1.5 million and a content of solids of 21% by weight. 0.01 parts by weight of an aziridine-based curing agent was added to 100 parts by weight of the prepared syrup, and the mixture was sufficiently stirred. Then, a silicone release polyester (PET) film was coated and dried in an oven at 100 ° C. for 3 minutes to form an acrylic adhesive layer having a thickness of 50 microns. Prepared. Aging was performed for 48 hours in an oven at 50 ° C.

silicon Adhesive layer  Produce

Silicone resin, silicate resin (MQ Resin) and platinum catalyst were purchased from Dow Coating to prepare a silicone adhesive layer (silicone resin: # 7657, MQ Resin: # 7066, platinum catalyst: # 4000) and 100 weight of silicone resin. After mixing 10 parts by weight of the silicate resin (MQ Resin) to 1 part, 1 part by weight of platinum catalyst was added to 100 parts by weight of the mixture of the silicone resin and the silicate resin (MQ Resin). Next, the mixture was sufficiently stirred and then coated on a fluorine-releasing polyester (PET) film. And dried for 2 minutes at 130 ℃ to prepare a silicon adhesive layer of 50 microns thick.

Foam tape manufacturing ( Adhesive layer  Plywood)

After treating the corona in the conditions of the current 6A, 2M / min using the corona treatment machine, the acrylic adhesive layer and the silicone adhesive layer, the acrylic adhesive layer on one side of the prepared acrylic foam, the opposite side The silicone adhesive layer was laminated. That is, an acrylic adhesive layer was laminated on one side of the acrylic foam and a silicone adhesive layer was laminated on the opposite side. Then, the laminated sample was placed in an oven at 50 ° C. and plywooded through aging for 24 hours, and according to this embodiment, which was composed of a silicone adhesive layer (corona treatment) + acrylic foam + acrylic adhesive layer (corona treatment) Foam tapes were prepared.

[Examples 2 to 5]

Except for changing the weight ratio of the silicone resin and silicate resin (MQ Resin) in the production of the silicone adhesive layer, and the polymerization weight ratio of 2-ethyl hexyl acrylate and the polar monomer acrylic acid in the acrylic adhesive layer was changed. It carried out similarly to Example 1 above. The foam tape was laminated in the same manner to form a silicone adhesive layer (corona treatment) + acrylic foam + acrylic adhesive layer (corona treatment), and a foam tape having a different composition ratio (content) of the silicone adhesive layer from Example 1 was used. Prepared. The composition ratio of the silicone adhesive layer according to each example is shown in the following [Table 1].

Comparative Example 1

In contrast to Example 1 was carried out in the same manner as in Example 1, except that only the acrylic pressure-sensitive adhesive layer was used without using a silicone pressure-sensitive adhesive layer. That is, the acrylic adhesive layer prepared above was laminated on both sides of the acrylic foam to prepare a foam tape composed of an acrylic adhesive layer (corona treatment) + acrylic foam + acrylic adhesive layer (corona treatment). And the composition ratio of the acrylic adhesive layer was as Table 1 below.

Comparative Example 2

In contrast to Comparative Example 1, it was carried out in the same manner as in Comparative Example 1 except that the corona treatment was not performed to the adhesive layer when plywood. That is, the acrylic adhesive layer prepared above was laminated on both sides of the acrylic foam, thereby preparing a foam tape composed of an acrylic adhesive layer (untreated corona) + acrylic foam + acrylic adhesive layer (untreated corona).

                    <Composition ratio of adhesive layer, unit: parts by weight>
Remarks
Silicone adhesive layer
Acrylic adhesive layer Silicone resin Silicate resin
(MQ resin) Acrylate Acrylic acid Example 1
100 10 100 10 Example 2
100 8 100 12 Example 3
100 12 100 14 Example 4
100 3 100 8 Example 5
100 18 100 16 Comparative Examples 1 and 2
- - 100 6

90 ° peeling strength, shear strength, and interfacial adhesion were evaluated for the foam tapes according to the Examples and Comparative Examples prepared as described above.

Experimental Example

90 ° Peel strength  Measure

An aluminum plate coated with ceramic powder (width 50mm, length 120mm) was washed with a solution in which isopropyl alcohol and water were mixed at a volume ratio of 50:50, and then dried.

And a copper foil of 0.020mm thickness and 30mm width (Laminated Copper Foil) was laminated so as to form a label on either side of the acrylic adhesive layer on the acrylic adhesive layer on the specimen according to the example, the specimen according to the comparative example. In addition, the prepared specimens were attached to the aluminum plate coated with the ceramic powder by rolling in each direction with a 7Kg roller. In this case, the silicon adhesive layer was in contact with the specimen of the example, and the acrylic adhesion layer was in contact with the aluminum plate coated with the ceramic powder.

On the other hand, in order to measure the peel strength of the acrylic adhesive layer and the glass plate, a specimen was prepared in the same manner as described above. Specifically, a cover is formed by laminating copper foil on one side of the foam tape, and in the case of the specimen according to the embodiment, the acrylic adhesive layer is rolled so that the acrylic adhesive layer is in contact with the glass plate even in the comparative example. Attached.

The sample prepared as above was left at room temperature for about 72 hours. Thereafter, each specimen was measured at a peel strength of 90 degrees at a rate of 300 mm / min at room temperature, and the average value of five samples was recorded. Peel strength was based on ASTM D 3330 and measured using a universal testing machine (UTM). The results are shown in the following [Table 2].

                       <Peel strength measurement result> Remarks
Ceramic powder coated
Aluminum plate Glass plate




Peel strength
(Kg / 25mm, at 25 ℃)

Example 1
9939 7118 Example 2
9044 7410 Example 3
9122 7122 Example 4
8768 6963 Example 5
8873 7043 Comparative Example 1
1124 7014 Comparative Example 2
864 6216

As shown in Table 2, when the silicon adhesive layer is applied according to the present invention, it can be seen that the ceramic powder is coated with the aluminum plate and has a high peel strength. In addition, as confirmed in Examples 1-3 and Examples 4-5, in forming a silicone adhesion layer, silicate resin (MQ resin) is in the range of 5-15 weight part with respect to 100 weight part of silicone resins (8 , 10, 12 parts by weight), it can be seen that the peel strength with the aluminum plate coated with ceramic powder is very excellent as 9000 Kg / 25mm or more. In addition, in the case of the acrylic adhesive layer, when the acrylate: acrylic acid was polymerized in the range of 100: 10 to 15 (100: 10, 12, 14), the peel strength with the glass plate was 7100 Kg / 25mm or more, which is very excellent. have.

2. Shear strength  Measure

A metal plate (SUS 304) was laminated on both sides of the foam tape sample prepared as described above, and the roller weighing 7 kg was reciprocated once, and then aged by aging for 24 hours. And based on ASTM D 1002, using a universal testing machine (UTM), the dynamic shear strength was measured by pulling both sides of the metal plate at a speed (cross head speed) of 12.7mm / min at 25 ℃. The results are shown in the following [Table 3].

                 <Shear strength measurement result> Remarks
Ceramic powder coated
Aluminum plate




Shear strength
(Kg / in ² , at25 ℃)
Example 1
34.8 Example 2
33.0 Example 3
34.0 Example 4
32.7 Example 5
31.5 Comparative Example 1
11.8 Comparative Example 2
12.1

As shown in Table 3, when the silicon adhesive layer is applied according to the present invention, it can be seen that the ceramic powder is coated with an aluminum plate and has a high shear strength. In addition, as confirmed in Examples 1-3 and Examples 4-5, in forming a silicone adhesion layer, silicate resin (MQ resin) is in the range of 5-15 weight part with respect to 100 weight part of silicone resins (8 , 10, 12 parts by weight), it can be seen that the shear strength is very excellent in addition to the peel strength.

3. Measurement of interfacial adhesion between foam tapes

In order to find out the interfacial adhesion between the acrylic foam and the silicone adhesive layer of the foam tape according to the corona treatment was performed as follows.

For foam tape specimens according to Example 1 and Comparative Example 2 above, each foam tape specimen was cut to a size of 0.5 in x 0.5 in, and the foam tape was laminated between two metal plates (SUS 304). A 1 kg weight member was placed on the bonded area for 15 minutes. Then, the absence of 1 Kg weight was removed and left for an additional 24 hours at room temperature. Thereafter, the specimens were measured after standing in a 70 ° C. oven for 10 minutes. The measurement was based on ASTM D 3654, using a universal testing machine (UTM), and suspended 1Kg weight on the metal plate to confirm the holding time at 25 ℃ and the degree of separation of the interface between the acrylic foam and the adhesive layer (25 ℃). At this time, in the case of Example 1, the adhesive force was maintained without being separated even though it was 10,000 minutes (min), and in Comparative Example 2, it was separated in about 34 minutes. The results are shown in the following [Table 4].

                 <Measurement Result of Interfacial Adhesion> Remarks
Example 1 Comparative Example 2 Retention time (minutes)
≫ 10,000 34 Interface separation
Not separated Detached

As shown in Table 4, when the corona treatment according to the present invention can be seen that the interlayer interfacial adhesion of the foam tape is excellent.

Therefore, the foam tape according to the present invention has an excellent peeling strength (adhesive force) can exclude the attachment and removal process of the existing masking tape, it is possible to shorten the period of manufacturing the subway sliding door. In addition, most adherends such as olefin (Olefin), low surface energy plastic, and silicone cotton, which are not easily adhered to conventional acrylic foam tapes, have excellent adhesion without a primer, which is advantageous in terms of environmental aspects and productivity. Is high.

1 is a cross-sectional view of a foam tape according to the present invention.

2 is an exemplary cross-sectional view of a sliding door according to the present invention.

3 is a state diagram used in the sliding door according to the present invention.

<Description of Symbols for Main Parts of Drawings>

10: foam support layer 20: silicone adhesive layer

30: acrylic adhesive layer 100: foam tape

200: metal frame 210: frame body

220: ceramic powder coating layer 300: door plate

400: cushioning material D: door

Claims (14)

In the door foam tape for attaching the metal frame and the door plate, Foam support layer; A silicon adhesive layer formed on one surface of the foam support layer and attached to the metal frame; And A foam tape for a door, comprising an acrylic adhesive layer formed on the other surface of the foam support layer and attached to the door plate. The method of claim 1, The metal frame is a foam tape for the door, characterized in that the ceramic powder is painted. The method of claim 1, The foam support layer is a door foam tape, characterized in that the acrylic foam. The method of claim 1, The silicone adhesive layer is a foam tape for the door, characterized in that after the corona treatment and laminated with a foam support layer. The method of claim 4, wherein Corona treatment is a foam tape for the door, characterized in that carried out at the current 0.1 ~ 10 A, processing speed 0.5 ~ 5 M / min (meter / minute) conditions. The method of claim 1, Silicone adhesive layer is a door foam tape comprising a silicone resin represented by the following formula (1). [Formula 1]

(In Formula 1, R ₁ is OH, a methyl group or a vinyl group, R ₂ is an alkyl group, a vinyl group or a phenyl group, n is an integer of 1 or more.) The method of claim 1, The silicone adhesive layer is a door foam tape comprising a silicone resin, a silicate resin and a catalyst. The method of claim 7, wherein The silicone adhesive layer comprises 0.2 to 25.0 parts by weight of the silicate resin and 0.1 to 5.0 parts by weight of the catalyst with respect to 100 parts by weight of the silicone resin. The method of claim 7, wherein The silicone pressure-sensitive adhesive layer is a foam tape for a door comprising 5 to 15.0 parts by weight of the silicate resin and 0.5 to 3.0 parts by weight of the catalyst with respect to 100 parts by weight of the silicone resin. The method of claim 1, The silicone adhesive layer comprises a silicone resin, a silicate resin, a Si-H polymer, a curing accelerator and a catalyst. The method of claim 10, The silicone adhesive layer comprises 5 to 15.0 parts by weight of the silicate resin, 0.1 to 10 parts by weight of the Si-H polymer, 0.001 to 2 parts by weight of the curing accelerator and 0.5 to 3.0 parts by weight of the catalyst, based on 100 parts by weight of the silicone resin. Foam tape for. The method of claim 1, The acrylic pressure-sensitive adhesive layer is a door foam tape, characterized in that it comprises an acrylic resin polymerized from 10 to 15 parts by weight of acrylic acid based on 100 parts by weight of acrylate. Metal frame; Door plate; And a foam tape attached between the metal frame and the door plate. The foam tape is a sliding door, characterized in that the foam tape according to any one of claims 1 to 12. The method of claim 13, Sliding door, characterized in that the metal frame and foam tape is attached to the pressure of 0.2 ~ 3.0kg / ㎠ at a temperature of 20 ~ 30 ℃.

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