JPS6382813A - Mounting method for abrasion preventing laminate - Google Patents

Abstract

PURPOSE:To improve handling property, by a method wherein, when an abrasion preventing laminate, formed with the living side layer of an organic high molecular clear material, the open air side of an inorganic clear material, and a multilayer intermediate film, is mounted to a window frame, a mounting PART on the living side is peeled for removal so that a high rupture strength layer is left unpeeled. CONSTITUTION:An organic high molecular clear material 5, formed by a polyacryl resin film, is hard-coated at 6 to form an outer plate on the living side, an inorganic clear material 1, e.g. glass, forms an outside outer plate, and a multilayer intermediate film, formed by films 2 and 4 having low rapture strength but excellent adhesion and a film 3 having high rapture strength, is nipped therebetween to form an abrasion preventing laminate. When the laminate is attached to a window frame and the like, it is attached in a manner that at least one layer of the high rapture strength film 3 of the multilayer intermediate film is left unpeeled, for example, layers 5 and 6 are removed and the adhesion layer 4 and layers inner the adhesion layer are left unremoved. This constitution enables improvement of mounting strength.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an anti-scratch laminate, and more particularly, to an anti-scratch laminate, and more particularly, to a laminate having different breaking strengths between two outer panels made of an organic polymeric transparent material and an inorganic transparent material. The present invention relates to a method for attaching an anti-scratch laminate formed by inserting a multilayer interlayer film made of at least one polymeric material to a window frame, an automobile body, etc.

(Prior Art and Problems) Conventionally, laminated glass made of two pieces of glass, or scratch-proof safety glass made of an organic polymer transparent material on the occupant side of this laminated glass, has generally been used as a windshield for automobiles. It is being used.

These safety glasses have good penetration resistance and can be said to be highly safe. However, since it uses two pieces of glass, it is heavy, which is a disadvantage from the military's overall trend of reducing weight to improve performance and reduce fuel consumption.

Therefore, the present inventors investigated how to solve the drawbacks of conventional safety glass, and found that safety glass with excellent impact resistance, transparency, and scratch resistance differs between a single glass and an outer panel made of a transparent organic polymer material. They discovered that this could be achieved by inserting a multilayer intermediate m made of a polymeric material with high breaking strength, and have already applied for a patent (Title of invention: Impact-resistant abrasion-proof window, (Application date: August 28, 1988) Day)).

This anti-scratch window uses a single glass panel compared to conventional laminated glass panels that use two panes of glass, which greatly reduces its weight. The economic effects are extremely large.

Since the glass was made of a single sheet, problems occurred when it was installed on window frames, car bodies, etc.

In other words, the latest type of conventional anti-scratch safety glass is a laminated glass made of two sheets of glass with a transparent film with excellent adhesiveness laminated on the occupant side. When installing the product, the adhesive film made of a transparent organic polymer material is peeled off and the glass surface is exposed, and this glass surface is used to attach the product to a window frame, car deck, etc. using an adhesive method. That's it. Therefore, due to the effect of the interlayer film that is inserted and bonded to the laminated glass, even if the window breaks along the inside of the bonded part in the event of a collision, the entire window will not come off and fall off.

On the other hand, in the case of the single-glass scratch-prevention window developed by the inventors, the hard coat layer on the outer panel on the occupant side has good abrasion resistance, smoothness, transparency, etc. On the other hand, since this hard coat layer does not have adhesive properties, it cannot be attached to a window frame, an automatic vehicle dee, etc. using an adhesive method.

In addition, in contrast to the conventional method, if you peel and remove each layer on the occupant side of the part to be attached and attach it to a window frame or the body of an automatic 1 with a glass surface, the adhesive part is only one piece of glass, and collisions can occur. This method is not applicable because sometimes the glass panes along the inside of the window frame break and the entire window comes off.

Solving the above energization and installation methods became important issues for the practical application of this abrasion laminate.

(Means to Solve the Problem) As a result of extensive research and consideration in order to solve this problem, the present inventors have found that at least one layer of high By peeling off the parts and bonding them to the car body, etc., so as to leave the breaking strength material, it has the same strength as conventional laminated glass, and in the event of a collision, the whole part will be removed along the window frame. We have found a way to attach the device without it coming off and have completed the present invention.

That is, the present invention provides two or more types of polymeric materials with different breaking strengths between two outer panels consisting of an organic polymeric transparent material coated with the outermost AI on the occupant side and an inorganic transparent material on the outside air side. When installing the scratch-preventing laminate, which is made by inserting a multilayer interlayer film, into a window frame, car body, etc., it is installed on the residential side so as to leave at least one layer of high breaking strength material in the multilayer interlayer film. The present invention relates to a method of installing an anti-scratch laminate comprising peeling away the portion and applying an adhesive sealant using the exposed surface thereof.

The present invention will be explained in detail below. First, the scuff prevention laminate used in the present invention will be explained.

This scuff-prevention laminate is made of two or more types of polymeric materials with different breaking strengths between two outer panels: the outermost layer on the occupant side is made of a hard-coated organic polymeric transparent material, and the outside layer is made of an inorganic transparent material. It is made by inserting a multilayer interlayer film.

Here, examples of inorganic transparent materials for the outside of the two outer panels include glass, tempered glass, and partially tempered glass.

Examples of exterior panels made of transparent organic polymer materials used on the occupant side include polyacrylic resin film, polyvinyl chloride resin film, polyethylene terephthalate resin film, polyamide resin 7 film, aromatic polyamide resin film, and polyester-polymer resin film. Ether resin films and polysulfonated films have good abrasion resistance and are more preferable.

Among them, a hard-coated polyethylene terephthalate resin film is most preferable from the viewpoint of transparency, surface smoothness, economic efficiency, and the like.

Next, there is a multilayer interlayer film made of two or more types of polymeric materials with different breaking strengths that is inserted between these two outer panels.
Examples of polymeric materials for interlayer films used to improve adhesion to the outer panel of the sheet include transparent ethylene-vinyl acetate copolymer and ethylene-vinyl acetate-trialyl isocyanurate terpolymer. , partially saponified ethylene-vinyl acetate copolymer, polyvinyl butyral, polyvinyl formal, and polyurethane.

However, polyvinyl butyral resin has a blocking property (the property that the films adhere to each other during storage and transportation), so it is necessary to completely prevent this by cooling. In addition, the temperature at which the impact resistance performance is maximized is designed to be around room temperature (23°C), and other temperature ranges are not preferred because the impact resistance performance is extremely reduced. On the other hand, ethylene-
Acetic acid-vinyl copolymer (hereinafter referred to as EVA) and ethylene-
A transparent film made of vinyl acetate-trialyl isocyanurate terpolymer (hereinafter referred to as EVAT) is most preferable since it does not have such negative aspects.

On the other hand, examples of polymeric materials with high breaking strength include polyethylene terephthalate with excellent transparency, various polyamides, various aromatic polyamides, various polyester polyethers, various polysulfones, and various polyimides.

Among these, polyethylene terephthalate (hereinafter referred to as PET) film is particularly preferred from the viewpoints of surface smoothness, strength, and economical efficiency.

Figure 1 shows a preferred example of the scratch-preventing laminate used in the present invention, where ■ is float glass as the inorganic transparent material (outer panel on the outside air side), and ■ and ■ are interlayer materials with excellent adhesiveness. 2 is made of EVAT film, 2 is made of PET 74 lumen as a high breaking strength material, and 2 is made of hard coat treated PET film (exterior panel on the occupant side).

Here, the thickness of each outer plate and each layer of the interlayer film to be inserted is as follows: (1): 1.0 to 5.0 tm; (2): 0.03 to 0.5 tm; (2): O, Ol to 0.5 tm; 3 m ■; Including hard coat layer (■) 0605~0.3
rm is a preferred range.

Next, the attachment method, which is the main point of the present invention, will be explained with reference to the drawings.

As described in the claims, when this scratch-preventing laminate is attached to a window frame, car body, etc., the installation on the residential side is done so that at least one layer of high breaking strength material in the multilayer interlayer film remains. The entire feature is to remove the peel and use the exposed surface to attach it with an adhesive sealant.For example, in the case of the abrasion prevention laminate shown in Figure 1, it has an excellent adhesiveness of at least ■. The purpose is achieved by leaving the membrane made of a material with high breaking strength (2) as a mounting part and joining the vehicle's goggles (F4-) to the like.

A specific example of the number and style of peeling is shown in Figure 2, in which the layer of PET film, which is a high breaking strength material, is left as is. For sandpaper, remove only the hard coat layer with steel wool, etc. In the case of Figures 3 and 4,
There is a method of inserting a knife into the area to be peeled off and peeling off each necessary layer.

However, the method of removing only the hard coat layer on the surface with sandpaper or steel wool, as in the case of Figure 2, poses no problems in terms of performance, but in addition to the complexity of the work, it also reduces the appearance. Extrusion of the peeling from the upper window frame must be avoided at all costs, so it is very difficult to carry out the process. I don't like it at all.

On the other hand, the method of peeling and removing as shown in FIGS. 3 and 4 is extremely simple and preferred.

Of course, even in this case, if you insert and paste masking tape (e.g. Cellochie F) between the layers to be peeled and removed in advance, and then peel off each layer to be peeled together with the masking tape, you can improve work efficiency and obtain a product with a good appearance. Therefore, it is an effective method.

Next, to attach the laminate to the window frame or car body, etc., which has been peeled off, the method is usually one of each of epoxy, urethane, and silicone liquids used when attaching windshields to the car body. Any method may be used, including adhesive methods in which a mold or two-component curing sealant is applied alone or in combination with an adhesive primer, and mechanical installation methods using ordinary architectural or pill methods. Can be done.

The present invention will be explained in more detail below using Examples.

(Example) First, matters related to Examples and Comparative Examples will be explained.

ω Performance evaluation method (falling ball test) (,) The falling ball test of the glass laminates of the examples and comparative examples was as follows:
Six samples of the same type were tested using 2.26 kg copper balls in accordance with JISR-3212.

(b) Test temperature was determined after each sample was left in a constant temperature bath at 25° C. for 4 hours or more.

(c) To the outer panel (vert coat) PET) that becomes the inner side,
Tests were conducted by dropping a steel ball from a specific height.

0) Test sample: The sample shown in FIG. 1 with the following layers was peeled off and removed as shown in FIGS. 2 to 6.

■'', 3wm thick float glass ■: 0.1m thick EVAT film ■: 0.1m+thick, Yojin PET film made by Teijin (I) (
0-type polyester film) ■ and ■; 0.1-thick hardcoat) PET (Example 1~
3. Comparative Examples 1 and 2) With the structure shown in FIG. 1, an abrasion-preventing laminate with a size of 305 m x 305 cm was fabricated by partially closing the four sides of the laminate and peeling off between each layer in a width of 155 m. This sample is 275
It had an opening of WX275m11 and was set on a falling ball test stand with a peeling removed part of 15 m on each side, and was set with urethane adhesive, and was dropped to the center of the laminate at the height of the steel ball t-6rI@, and the results were observed. .

The results are shown in Table 1.

According to the results in Table 1, the products in which the PET layer ■ was left on the mounting part (Examples 1 to 3) did not allow the laminate to come off or fall off from the mounting base due to steel ball collisions, and had good penetration resistance. is also sufficient and satisfies the required performance.

On the other hand, in the case where the PET layer (■) was not left on the mounting part (Comparative Examples 1 and 2), only the mounting part was left on the mounting base to prevent the steel ball from colliding with the laminate, causing it to break and fall off. This is an inappropriate method.

(Effects of the Invention) Due to the completion of the present invention (1) Compared to conventional abrasion prevention laminates based on laminated glass, a glass-sheet abrasion prevention laminate is much lighter and has higher safety. It is now possible to attach it to automobile zedies, window frames, etc.

(2) As a result, the road to the practical use of this scratch-preventing laminate has been opened, and it is highly effective in improving safety and reducing fuel consumption of automobiles.

[Brief explanation of the drawing]

(1) FIG. 1 is a partial cross-sectional view of the abrasion prevention laminate used in the present invention. (2) Figures 2 to 4 and 5 to 6 are
Inorganic transparent material (float glass) ■ and ■; A film with low breaking strength but excellent adhesiveness (EVAT
Film) ■; High breaking strength film (0-PET film) ■; Organic polymer transparent material film (PET film) ■; Hard coat film

Claims (4)

[Claims] (1) A multilayer intermediate layer made of two or more types of polymer materials with different breaking strengths between two outer panels, the outermost layer of which is made of a hard-coated organic polymer transparent material on the occupant side and the inorganic transparent material on the outside air side. When attaching the scratch-preventing laminate made by inserting the film to a window frame, car body, etc., the attachment part on the residential side is peeled off so as to leave at least one layer of high breaking strength material in the multilayer interlayer film. A method of installing an anti-scratch laminate, comprising removing it and installing it with an adhesive sealant using its exposed surface. (2) The mounting method according to claim 1, wherein the outer panel of the organic polymer transparent material that is hard-coated on the occupant side is a polyester film. (3) The mounting method according to claim 1, wherein the inorganic transparent material on the outside air side is glass. (4) The multilayer interlayer film is a combination of a peroxide-crosslinked ethylene-vinyl acetate copolymer or ethylene-vinyl acetate-trialyl isocyanurate ternary copolymer and a polyethylene terephthalate film. An attachment method according to claim 1, characterized in that: