JPS5954549A - Antistatic film for coating surface - 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 The present invention relates to an antistatic filler for surface coating, which can be crimped onto the surface of an object to impart antistatic performance to the object.
It is something that

In order to prevent static charging on objects with surfaces such as plastics with high electrical resistance, conventional methods include incorporating an antistatic agent into the object or coating it with antistatic paint. has been used.

However, the method of incorporating an antistatic agent into an object is certain to be effective, but the conductive substance that is usually included for the purpose of preventing static resistance does not prevent the object from resisting static electricity. This often had a negative effect on physical properties and processability. In addition, although the method of applying anti-static paint to the surface of an object is ffli delivery, it is easy to apply it evenly in the case of an object with a complicated curved shape, and it is unreliable. there were.

The film of the present invention overcomes these drawbacks of the conventional methods.

The surface covering band 1 (J1 prevention film) of the present invention is an antistatic layer on one side of the film that easily deforms when heated, and the other side is a resin layer that easily adheres to other objects when heated. Yes, )・The entire ilm is easily softened and deformed by heating! A band for covering the surface of an object, which is used to prevent static electricity on the surface of an object by covering the surface of the object by softening the film by heating and pressing it onto the surface of another object. This relates to boxes and prevention films.

To coat the surface of an object with the film of the present invention,
It is better to use a skin backer. The film of the present invention is attached to a skin backer with the electrical protection +J= layer facing up and the resin layer that adheres to the object facing down, heated and softened, and placed over the - of a marked object, When a vacuum is applied from the bottom surface and atmospheric pressure is applied from the L surface, the film deforms along the shape of the object, is crimped onto the surface of the object, and forms an antistatic layer on the surface of the object. form.

The base material used for the film of the present invention is suitably a JII sized 30 to 200 micron film, which is known as a skin back film and is made of EVA resin, ionomer resin, vinyl chloride resin, 1.2 polybutadiene resin, etc. Since the method of applying the film of the present invention is similar to the method of skin pack, a film with good skin pack suitability is an important component.

The antistatic layer on one side of the filter is easily softened and deformed by heating, and it is necessary to form an antistatic layer on the surface of the object.
8. EVA resin, 1.2 polybutadiene containing L7/J electrical agents such as conductive force/bon black, conductive 11Z tin oxide powder, conductive +1 solidified 1111 lead powder, etc. VJ IIW s eye] Tsuma (111tf.

(vinyl chloride 411 resin), [which resin layer, cationic, anion i (1,1 process which ion 4'4β dodente1 (1 combination L-1EVA resin □, l, 2 polybutadiene resin, ionomer ] 1 river 1. J magazine vinyl! l
J beat f which i θ111i'i layer, ionic conductive sensory 7i! There is a guide city with 8 and 1st grade of resin. Proprietary d Kei Tsubori month □ β j Yozu (・Sat, film comrade's nomination method, or (P1 joint push-out decision etc. 3)
)1! -Although it is possible to apply a conductive material and form it by two steps, it is possible to obtain a band with good conductive performance.
l'i, l(I) The percentage of film having one layer is <(C1 [f suitable).The other side of the film θ
) to the object I) 47. >, 4i1 site 78- is,
Usual Skin Nok Tsuku 7 I/L No.'s Corona Sheet Weight 4
The adhesion is improved by using the base layer, and 11H is suitable for breaking down.)
Mel', especially NI'111-l, which has a low softening point because of its dense A (f is well '1')! Coextrude two layers of i' layer 5
or apply 1. It is also suitable.

According to the examples, the present invention 1. Il'' A7゜ will be explained in further detail.

Example 1 Io, Zumer 4R, January) J's,) 'j on one side of a 70 micron skin backing film;
? t;, processed, wet bow, weight 41 dynes/cr
n, and this side contains carbon black.
Krylic latex conductive paint, dry amount 5V, An”f
≠ Cloth and drying 1-. The six-sided resistance value of coating "11" (measurement method is based on JIS K6911. The same applies hereafter) is 2
It was 10' oats/square. Corona radiation was applied to the non-coated side of this film, the treatment was carried out at 1~℃, and the wetting tension was set to 41℃.
I set it to Daiso/m. This film was placed on the coated surface 4r and attached to a skin backer (7), heated and softened, and tightly adhered to the surface of a styrofoam box. A box with good buffering performance was obtained in which the inner surface, upper surface, and outer surface, except for the outer and lower curves of the glaze, were coated with a conductive layer. Moreover, buffer boxes with fluoroelectric and city-proof properties are susceptible to static electricity damage.
It is used as a container for storing and transporting equipment parts.

Example 2 Using a 100 micron thick skin backing film of E V A 46J Jl)i, conductive discrimination was carried out.
The same operation as in Example 1 was carried out using carbon black and a foamed polyethylene porcelain to form a conductor on the surface of the box.
E-type layer has tight contact with the cushion +11: A box with good capacity is V
jJ was beaten. The surface resistance of the film before being exposed (if~ is
2 x 10' ohm/square, the surface resistance value after stocking is 4 x at the bottom surface where the film is stretched the thinnest.
1.0', d-mu/stopping'-tsu, anti-static performance, and was at a sufficient level.This'ff is suitable for the running test of electronic equipment parts that are susceptible to static electricity damage. ,・
It is useful in the case that the antistatic layer is a black layer with carbon black as in the present example and as in Example 1. , ~
Because it absorbs heat rays well, it can be heated and softened in a shorter time than a transparent film (5 effects were observed).

Furthermore, since this film does not transmit heat rays, it is possible to use heat-resistant materials such as styrofoam or foamed polyethylene to cover the film during heating without causing any problems. Ta. usually,
When a similar operation is attempted using a transparent film, it is observed that the foamed polystyrene or foamed polyethylene undergoes deformation due to heat.

Example 3 One side of a skin pack film made of EvAil resin (7) and having a thickness h of 150 microns was prepared with a wet tension of 41 dynes/cm K 9J by corona discharge treatment, and this side contained a cationic conductive functional group. A methanol solution of acrylic conductive resin is dried at 39/rr? Apply,
The non-coated surface was adjusted to a wetting tension of 41 dynes/crn by corona discharge treatment. The coating surface of this film is 4X1
The surface resistance value was 0.08 ohm/square.

7) The film was attached to the skin backer with the coated side aligned, and tightly covered on the surface of the ABS resin-covered box. A box was obtained in which the inner surface, two sides, and the outer surface of the box, except for the outer and lower curves, were coated with a conductive layer. Boxes with such antistatic properties are ideal as containers for items that are susceptible to static electricity damage.

] T1j person Masao Miyake (and 1 other person) Procedures Masao Sode 11: (Voluntary) 1981 4. Jl 71'1 Cow to Commissioner Wakasugi 4 [1 Husband 1 Middle f'1 display Showa 5" file Special 7 (, VJI! 'f! '
L 63209 ``1 [≦Jj stop film 3, correction 4zu ζ) 1'1 1iJI system with 711f'l! F na 6・``Out 111
α person f'l ” ”',, :1 Mr.? 1(j餠)・) (046) (Ill. Number 07, subject of correction
Specification H, ``Invented and revised IT treatment column 1''.

(1) Details ssri e 3rd line from page 7 ``:5
g / m' J wo Correct as "3g/+π".

1 made.'' Draw 11:.

Claims (1)

[Claims] (1) One side of fill 1 is easily deformed by heating.
- The other side is a resin layer that easily adheres to other objects when heated, and the entire film easily softens and deforms when heated.7. ) that'r! j
Antistatic film for preventing wrinkles on the surface of objects.