JPS61267780A - Adhesive bulletin board - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention relates to an adhesive bulletin board, and its purpose is to provide an adhesive bulletin board with a resin coating formed on the surface to adhesively support posted items. To provide an adhesive bulletin board which has a long adhesive duration and can be reused even after washing the resin coating surface with soapy water.

(Prior Art and Its Disadvantages) Conventionally, normal bulletin boards are made of wood or vinyl and are usually coated with paint, etc., but the bulletin board surface does not have any function to directly support the posted items. I don't have it.

In order to support posted items such as advertisements on such bulletin boards, it is necessary to use thumbtacks, tape, staplers, etc., which is time-consuming and time-consuming. In particular, when thumbtacks, staplers, etc. are used, the surface of the bulletin board is It had the disadvantage that it could be damaged and could not withstand long-term use.

On the other hand, there is also a type of bulletin board in which a large number of spherical tackifiers are arranged on the surface of the bulletin board, and the posted items are dot-adhered to the tackifiers for support.

In such bulletin boards, since the tackifier is not in a continuous form, the cohesive force between the tackifiers is weak, and if the posted object is repeatedly placed on the surface of the tackifier, the tackifier may It has the disadvantage that it sticks to objects and falls off the bulletin board surface.

Further, there was a drawback that dust, dirt, etc. adhered to the surface of the adhesive, causing the adhesive to disappear, making it impossible to use it again.

(Solution Means) The present invention was made to solve the above-mentioned drawbacks, and is concerned with an adhesive bulletin board formed by coating a resin coating on the surface of a vinyl chloride sheet.

(Structure of the Invention) The vinyl chloride sheet used in this invention has a weight ratio of 0.3 or more, preferably 0.4 to 1.1.
5 plasticizer.

In this invention, in the composition constituting the vinyl chloride sheet, the total weight ratio of plasticizer to 1 part vinyl chloride resin is 0.
The reason why it is set at 3 or more is that if the total plasticizer charge is less than 0.3 in terms of weight ratio, the amount of plasticizer that should be transferred from the vinyl chloride sheet to the resin coating film described later is too small, and it is not enough to cover the surface of the resin coating film. This is because the adhesive support of the posted object on the surface of the resin coating film, which is the object of the present invention, cannot be achieved.

Examples of the plasticizer used in this invention include DOP (dioctyl phthalate), DOA (dioctyl phthalate), and DBP (dibutyl phthalate).

As the main component of the resin coating film in this invention, a resin having a glass transition temperature of 35°C or less, preferably 20°C to -40°C is used.

The reason why the glass transition temperature of the resin as the main component of the resin coating film used in this invention is set to 35°C or lower is that when the glass transition temperature exceeds 35°C, the resin coating becomes denser, and the plasticizer becomes chlorinated. This is because it is difficult to transfer from the vinyl sheet to the resin coating, and sufficient adhesion cannot be ensured on the resin coating surface, making it impossible to adhesively support the posted object on the resin coating surface, which is the objective of this invention. It is.

Examples of resins with a glass transition temperature of 35° C. or lower used in this invention include acrylic, acrylic-styrene, ethylene-vinyl acetate, and vinyl acetate Veoba-based emulsion resins, acrylic lacquer-based solvent-based resins, and acrylic-urethane resins. Examples include one-liquid type.

In this invention, if necessary, a pigment may be added to the components of the resin coating film for coloring.

In this case, the amount of pigment added is preferably 65% by weight or less based on the composition of the resin coating film after application and drying.

In this invention, the reason why the amount of pigment added is 65% by weight or less is that when the content of pigment exceeds 65% by weight, the plasticizer that has migrated from the PVC sheet to the resin coating is adsorbed by the pigment and the resin This is because it is not possible to ensure sufficient adhesiveness on the surface of the coating film, and the adhesive support of the posted object on the surface of the resin coating film, which is the object of the present invention, cannot be achieved.

As the pigment used in the resin coating film of the present invention, titanium dioxide, red iron and other non-filler materials, azo type, triphenylmethane type and other organic pigments, etc. can be preferably used.

In the adhesive bulletin board according to the present invention, the plasticizer in the saturated vinyl chloride sheet gradually transfers to the resin coating, thereby imparting tackiness to the surface of the resin coating.

Alternatively, by using a resin that has tack from the beginning, the adhesion of the posted object can be further increased.

Therefore, even if the adhesiveness of the resin coating surface once disappears due to dust, hand marks, etc. on the resin coating surface, the adhesiveness will be maintained on the resin coating surface due to the plasticizer that has migrated from the PVC sheet to the resin coating. be done.

In the present invention, a plasticizer such as DOP or DOA may be added to the composition of the resin coating film, if necessary.

In this case, in the case of a resin coating film containing a pigment, the content of the plasticizer is 2% by weight or more of the coating composition, preferably 3 to 3% by weight of the coating composition.
4% by weight is good.

In the case of a resin coating film that does not contain pigments, 1 to 2 of the same coating composition
0% by weight, preferably 2 to 5% by weight.

The reason why a plasticizer is added to the composition of the resin coating film in this invention is that when a resin coating composition that does not contain a plasticizer is applied to the surface of a vinyl chloride sheet, the plasticizer in the vinyl chloride sheet is It takes time for the resin coating to transfer to the resin coating surface, and the adhesiveness cannot be maintained on the resin coating surface for a while after application and drying.However, a resin coating composition containing a plasticizer was applied to the surface of a vinyl chloride sheet. In some cases, the adhesiveness can be maintained on the resin coating surface immediately after the resin coating composition is applied and dried.

The coating amount of the resin coating composition is 10 to 400 g/solid content.
rd, preferably 50 to 200 g/rrr.

Incidentally, since a resin having a glass transition temperature of 0° C. or lower has a certain degree of tack from the beginning, it can maintain its tackiness immediately after drying, and there is no need to add a plasticizer.

In this invention, a double resin coating film may be formed on the vinyl chloride surface.

That is, in order to recoat the resin coating film (hereinafter referred to as the first layer) formed directly on the vinyl chloride surface, a second layer is applied to the first layer.
This is the case when a resin coating composition is formed as a layer.

In this case, the resin coating composition for the second layer contains a resin having a glass transition temperature of 35° C. or lower and 1 to 20% by weight of a plasticizer as main components.

(Effects) The adhesive bulletin board according to the present invention having the above-mentioned configuration is an adhesive bulletin board formed by coating a resin coating on the surface of a vinyl chloride sheet, so the plasticizer in the vinyl chloride sheet is absorbed by the resin coating. It transfers to the film and allows the resin coating to retain its adhesiveness, making it possible to attach and support posted items directly to the surface of the resin coating without using thumbtacks, tape, etc. To achieve the effect that long-term use is possible without requiring much effort, and without damaging the adhesive bulletin board itself with thumbtacks or the like.

In addition, since the plasticizer in the PVC sheet is transferred to the resin coating to maintain the adhesiveness of the resin coating, dust and dirt may adhere to the surface of the resin coating and cause the adhesiveness of the resin coating. Even if the condition disappears, the plasticizer in the vinyl chloride sheet is transferred to the resin coating again, and the tackiness of the resin coating is recreated, making reuse possible.

In addition, in this invention, particularly when the vinyl chloride sheet is formed from a composition containing a plasticizer in a weight ratio of 0.3 or more to 1 part vinyl chloride resin, and the resin coating film has a glass transition temperature of 35°C The above-mentioned effects can be exhibited even more excellently when the film is formed from a composition containing the following resin as a main component.

In addition, in this invention, especially the resin coating film has a glass transition temperature of 35
If it is formed from a composition mainly composed of a resin and a plasticizer of 1 to 20% by weight at a temperature below The plasticizer in the vinyl sheet transfers to the resin coating, and the adhesiveness can be maintained on the surface of the resin coating immediately after drying, allowing objects to be posted on the surface of the resin coating immediately after drying. Ru.

In addition, in particular in this invention, the resin coating film is composed of two layers, the first layer formed directly on the surface of the vinyl chloride sheet is composed of a composition whose main component is a resin having a glass transition temperature of 35° C. or lower, and the first layer is formed directly on the surface of the vinyl chloride sheet. The second layer formed on the surface has a glass transition temperature of 35
When the composition is composed of a resin with a temperature below ℃ and 1 to 20% by weight of a plasticizer as the main components, a second layer of a different color is formed on the surface of the first layer when the color of the first layer is boring. This allows you to repaint it with a new color.

The effects of this invention will be made clearer by describing Examples and Comparative Examples below.

(Examples 1 to 7) Adhesive bulletin boards were prepared by applying the resin coating composition (solid content: 70 g)/rd shown in Table 1 to the surface of a vinyl chloride sheet having the composition shown in Table 1 below.

Margin below 1 Table 11 Example +12345671 1*11 Vinyl chloride 1100 100 100
100 100 100 100 111oop
l 3010015010010010010011
1 Acrylic-styrene! ○ −−〇 〇 〇
〇11 1 (old) (1 ((acrylic resin 1- 〇 = -----1
11 (Note 1) 11 1*21 Ethylene-vinyl acetate resin 1- - ○ --1-
111 (Note 3) 11 1 with titanium oxide (---3065-301
1l DOP 1----- 541
In the above table, the values for vinyl chloride and DOP indicate parts by weight, and the values for titanium dioxide indicate the weight percent content of titanium dioxide in the resin coating film after application and drying.

○ indicates blending, - indicates non-blending.

*1 Vinyl chloride sheet composition *2 Resin coating film composition Note 1) Kanebo N'i-NACRY, LIC1
25-4280Tg-4℃ Note 2) Mitsubishi Yuka Acronal YJ1200D
Tg 33℃ Note 3) Showa Kobunshi Policy/L, EVAP-
550 Tg 3°C (Examples 8 to 12) The second layer composition shown in Table 2 (solid content 70 g
)/rd was applied to create an adhesive bulletin board.

2nd Table 1 Example 181911011111211 Adhesive Bulletin Board 1 Example 1 Prevention W111 Example 1 vs. Carp 11
1 carp 1+ 13131
4131411 1 Acrylic sealant (Note 1) l-1-
101-10111 Ethylene-vinyl acetate resin 1010 l-
101-111 (Note 3) l I
I II I +1*3 1 with titanium oxide l -1-1-1301
30111ro OP l
1 1 20 1 15
1 3 1 4 1 or less margin The titanium dioxide numerical value in the above table indicates the content weight % in the second layer composition, and the numerical value of DOP indicates the content weight % in the second layer composition.

*3 Second layer composition Note 1) Same as above Note 3) Same as above (Comparative Examples 1 to 4) A resin coating composition shown in the table below was applied to the surface of a vinyl chloride sheet having the composition shown in Table 3 below. (Solid content: 70 g)/rd was applied to create an adhesive bulletin board.

Table 3 In the above table, the values for vinyl chloride and DOP indicate parts by weight, and the values for titanium dioxide indicate the weight percent content of titanium dioxide in the resin coating film after coating and drying.

○ indicates blending, - indicates non-blending.

*1 Vinyl chloride sheet composition *2 Resin coating film composition (Note 4) Kanebo NSC NACRYLIC12
5-42807g-4℃ (Note 5) Kanebo NSC Yodozol GD91
B Tg 37°C (Comparative Examples 5 to 6) The second layer composition shown in Table 4 (solid content 70 g) was applied to the surface of the adhesive layer of the adhesive bulletin board of Example 3.4 shown in Table 4 below.
/ I created an adhesive bulletin board by applying rrl.

4 Table 1 Comparison example + 51 61
1 Adhesive bulletin board 1 Example 1 Example 11 1
Acrylic resin (Note 1) l-10+1 1 ethylene-vinyl acetate resin +01-+ 1*31 (Note 3) l I
11 l oop l 3
0 l 30 l or less Margin In the above table, the value of DOP is the content weight % in the second layer composition.
shows.

*3 2nd Fit composition Note 1) Same as above Note 3) Same test method as above (adhesion test) The resin coating composition of the adhesive bulletin board of each example and comparative example was applied to a vinyl chloride sheet and allowed to air dry. After 24 hours had elapsed, paper was pressed against the surface of the resin coating and the adhesion was examined by determining whether the paper stuck or came off.

Paper sticks: ○ Paper can be removed: × The results are summarized in Tables 5-7.

(Adhesion test immediately after application and drying of resin coating film) In Examples 4 to 7, the resin coating film was applied to the surface of the vinyl chloride sheet, and immediately after air drying, the above-mentioned adhesion test was conducted. The result is 5th.
It is shown in Table 6.

5th Table 11□11 Kawhip 11□II□11□11+ 1112
1314151 1 Viscous H student 1 0 1 0 1 0 1 0 101
Chapter 6 Table 1 11w11'1m118M! 111m1ln$JI
tallIa #11 Nagisa H student 1 0 10 1 0
1 0 10 1 0 lot No. 7 Table 1 1 Comparative Example 1 Comparative Example 1 Comparative Example 1 Comparative Example 11 Adhesiveness IXIXIXIXIXI The adhesive bulletin boards of Comparative Examples 6 and 7 did not dry forever because the plasticizer oozed out on the surface of the resin coating. .

As can be seen from the above results, the adhesive bulletin board according to the present invention has excellent effects.

Claims (5)

[Claims] (1) An adhesive bulletin board made by coating a resin coating on the surface of a vinyl chloride sheet. (2) The adhesive bulletin board according to claim 1, wherein the vinyl chloride sheet is formed from a composition containing a plasticizer in a weight ratio of 0.3 or more to 1 part vinyl chloride resin. (3) The adhesive bulletin board according to claim 1 or 2, wherein the resin coating film is formed from a composition whose main component is a resin having a glass transition temperature of 35° C. or lower. (4) Claim 1 or 2, wherein the resin coating film is formed from a composition whose main components are a resin having a glass transition temperature of 35°C or less and 1 to 20% by weight of a plasticizer. Adhesive bulletin board listed in either. (5) The resin coating film consists of two layers, the first layer formed directly on the vinyl chloride surface is made of a composition whose main component is a resin with a glass transition temperature of 35°C or less, and the first layer formed on the surface of the first layer is The two layers are a resin with a glass transition temperature of 35°C or less and a plasticizer 1.
The adhesive bulletin board according to claim 1 or 2, comprising a composition containing as a main component 20% by weight.