JPS5872444A - Evaporated film - 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 a vapor deposited film, which has excellent gloss.

The present invention relates to a vapor-deposited film that has a clear mirror image and also has good slipperiness.

Conventionally, vapor-deposited films provided with light-reflecting layers have been used for applications such as gold and silver threads, namers, and bells. In order for this film to exhibit excellent convergence, it is important that it has excellent reflectivity and gloss. In addition, l1lK, which handles film,
If the slipperiness between the films and between the films and other contacting objects is not high, it will be difficult to wind the film and problems will occur during the processing process, such as wrinkles. It is also required that the

However, it is difficult to meet all of these requirements at once. For example, to improve reflectivity and gloss, it is better to use a film with a smooth surface, but instead, it is better to use a film with a smooth surface. (in other words, the slipperiness of the film deteriorates).

Furthermore, if a film with a rough surface is used, the slipperiness is improved, but the light rays are reflected by -1, the gloss is lowered, and the mirror image becomes blurred. When the slipperiness of the film is improved by incorporating mold particles, which are inert substances, the gloss seen from the non-deposited side of the film is significantly lower than the gloss seen from the vapor-deposited layer side, and the decorative effect is diminished. . Therefore, it is extremely difficult to obtain a film that has both smoothness, excellent gloss, and a clear mirror image. At present, the requirements for slipperiness are met.

The present inventor aimed to eliminate such drawbacks.

As a result of intensive research on vapor-deposited films, it was found that by incorporating fine particles of an inert substance into the film, a film with a uniform range of protrusion distribution on the film surface, which was well-balanced in transparency, gloss, and slipperiness. The present invention was achieved by discovering that it has excellent properties.

That is, one aspect of the present invention is a laminated film in which a metal light-reflecting layer is provided on the surface of a film made of a thermoplastic polymer,
The film contains fine particles of an inert substance, and there are fine protrusions on the surface of the film, which protrusions span the length of the scan line 1all of the film Table 1.

Number of protrusions with height 1 height a2s swr or more...
-16 to 100 C-Total number of protrusions ・－・－・・・－・・・・■】～!
This vapor-deposited film satisfies 100 conditions and has a total haze of 4% or less when converted to 21 J@thickness.

The present invention will be explained.

The plastic film that is the base material of the vapor-deposited film of this Il- is generally applicable to polycrystalline thermoplastic resins such as polyester, boria! Do high writing degree po! Films of ethylene, aitatetic polypropylene, etc., which may be copolymerized as long as crystallinity is not lost, are preferred, and aromatic linear polyesters such as polyethylene terephthalate, polycarbonate ethylene-9-naphthalene, etc. are preferred. Dicarboxylate, etc.) biaxially stretched film s, a dimension
It is preferable because it has advantages such as excellent i1 properties, low moisture absorption, easy handling in leakage plants, and easy coating.

In the present invention, fine particles of an inert substance are added to the plastic base material to form a film-like Kll film.

Then, two-wheel stretching is applied to obtain a biaxially oriented film!
be. At this time, the inert substances contained in the film include titania, silica, aranosilicate C kaolin,
Examples include clay fat), II&acid calcium, and calcium phosphate. Silica may be amorphous or crystalline.

These inert substances, such as silica or calcium carbonate, are dispersed as a urine or ethylene chloride slurry, and in this dispersed state, a classification means C such as a P-5EE super decanter manufactured by Tomoe Kogyo Co., Ltd. is used. It can be obtained by classifying.

When the obtained inert substance is added to polyester, for example, it may be added before the polyester polymerization or during the first polymerization reaction, or after the first polymerization is completed, it may be kneaded in an extruder when pelletizing. Alternatively, it can be added to the melt in the IIK extruder which is extruded into a sheet, and then dispersed in the extruder, but it is preferable to add it to the melt in the extruder.

The plastic filler which is the base material of the vapor-deposited film is preferably an oriented film that is excellent in film forming and stretching.In particular, the Ilc snow axis oriented film is tough and has high dimensional stability, making it a more preferred base film. Such two-wheel stretching can be obtained by a simultaneous two-axis stretching method or a sequential axial stretching method. In this biaxial stretching, conditions for obtaining an equal balanced film may be selected for the stretching in each stretching axis direction.

It is also possible to select conditions for obtaining a tensilized film by increasing the magnification of one of the stretching axes. Biaxial stretching is 3
It includes detailed stretching modes such as step C (longitudinal stretching → transverse stretching → re-longitudinal stretching) and four-stage stretching (horizontal stretching → longitudinal stretching → re-transverse stretching → re-longitudinal stretching).

The base film obtained by the 5K process generally has a thickness of 1 to 1 OI (preferably 4 to 7 m). And this base film, as shown in Table 1iK, becomes moldy due to the influence of the added inert substance.
have.

This reward is printed as a protrusion on an arbitrary scanning line on the surface of the film, and the length of this scanning line 11 is k, and the number of protrusions with a height of 1214 or more is appropriate. ~1(
It is necessary to satisfy the following conditions: 10, and the number of IpS central occurrences is 1!0O-2s00.

To measure the number of protrusions on the film surface, the film surface was measured using a stylus type surface roughness needle (8t JilFCOM 3) manufactured by Tokyo Seimitsu Co., Ltd.
8) under the conditions of needle radius β, load aOγI, and stylus speed a3/m.

The film standard length was set to 4 cm in the film flow direction and 40 cm in the film width direction, totaling 80 cm, and the standard and direction was expanded by SO times and the height direction was expanded to 2,000 times.

The number of protrusions is height a l 25s1111 or less, a121-
ni-1m1 voice award, a will S ~ (L171 voice vote, ......-kawa L!
ziam1mliKtehe It is counted for each division, and the unit is SO ■ column fixed fear per Oki Tetsu CvI axis 1. Here, the total number of protrusions is the sum of the number of protrusions in 11 categories, and the height a
The number of protrusions above 21 sw+ is IL 1, g~am7
Total the number of protrusions in the category of 1j■ or more (JIB-B
-・Art to <according to).

The base film used for the vapor-deposited film discovered in this invention must have the following differences in the state of *S on its surface from the conventional film.

(a) The number of IL 1# shoulder-height evocations is relatively large, and the total number of -1 protrusions is relatively small.

When the total number of protrusions of the film is more than 100 protrusions/1 m, the haze becomes high and the gloss becomes unsatisfactory. In addition, even if the total number of protrusions is in the appropriate range of WOO~xsoo/I cm, if the height is less than 1 x 21 am or more/plant, the slipperiness will be poor and it will not be practical as a film. Moreover, the height &! ! 1 or more protrusions
- When the value exceeds 1/$1, the film surface becomes 5, where ridge-like irregularities are observed, and both transparency and gloss become low.

Therefore, it is necessary that the base plastic film of the vapor-deposited film of the present invention has a protrusion distribution within a predetermined range.
! subject.

Also, the film has a gold haze of 4 according to the ASP thickness conversion requirements.
%C or less (preferably 3% or less), this haze must be determined by JIB - using a known haze column determination method.
1714VC Therefore, it is expressed as a percentage (%1).

The vapor-deposited film of the present invention is one in which a light-reflecting layer is provided by single-sided plating or vapor deposition of a transparent base film having the above-mentioned specific surface protrusion distribution. This light-reflecting layer is provided on a base material using known means such as metals such as silver and aluminum.

The vapor-deposited film obtained by Tonoyo 5k is a gold and silver painting, a mirror,
Can be used for applications such as tamping.

In addition, the base film produced by the present invention is highly transparent and has good slip properties, so it can be used as a base film for solar films, ID cards, 1-Iku films, and transparent heat insulation films.
, can be used for marking films, etc.

Next, the main methods for measuring physical properties employed in the present invention will be described.

(l) Using a Murakami Color Research Institute's polar angle gloss meter (GP-IR), the gloss of the film on the human side of the film coated with 1-screen AlzM was fixed at 1, and a practical example was obtained. The evaluation was based on the relative value when the glossiness of sample No. 1 was set as 100.

Coefficient of Static Friction A fixed glass film is placed on the underside of the two overlapping films, and the lower side of the overlapping film (the film in contact with the side of the glass) is taken up at a constant speed. C approx. 1
0 to 1 s/min) A K detector is fixed at one end of the upper film (an end opposite to the direction in which the lower film is taken) to detect the tensile force between the films.

The thread used at that time weighs 1 to IIkII.

Use one with a lower surface area of 1.~1..-.

(3) Volume Sugao class ~ mta < grading 1 width SOO
m Fill AK peeling layer and protective trowel layer 1+: Nochi,
Roll up into a roll. The appearance of this rolled kerol was examined in detail, and the number of wrinkle-like protrusions on the surface of the film with one or more chicks in the major diameter was counted and graded into 1 to 5.

0 pieces 1st class 凰〜2 pieces 8th grade 8 ~ S pieces 31@ 6-10 pieces Grade 4 C Fail 1 11 or more, grade 5 C failed) The present invention will be explained in detail below using specific examples.

Examples 1 to 3 and Comparative Examples 1 to 3 Using dimethyl terephthalate and ethylene glycol as raw materials, using mancan acetate as a Niskel exchange catalyst, antimony trioxide as a polymerization catalyst, and phosphorous acid as a stabilizer, poly-alternated ethylene terephthalate was produced by a conventional method. Manufactured.

At that time, as an inert substance in ethylene glycol,
Table 1: Kazi weight% content in polymer by dispersing silica or calcium oxide
Reference 11).

The obtained polymer was melt-extruded to form a film by a conventional method, stretched on two wheels at ~13G°C, vertically stretched at 16x, horizontally stretched at 1xx, and heat-set at 220°C. Film thickness type m
A two-wheel oriented film of JLL was obtained.

Table - Approximately 10'T@trr on one side of each film obtained.
Al ζnium was vapor-deposited to a thickness of about aIJIII by a conventional method under reduced pressure to obtain a vapor-deposited film.

Glossiness and static friction coefficient of each deposited film.

The winding appearance is shown in Table 1 along with the surface protrusion distribution of the base polyester film.

” Procedural Amendment 1986 ll Month? Mr. Commissioner of the Japan Patent Office 1, Indication of the case Patent application Sho 515 170768 No. 2, Name of the invention Vapor-deposited film 3 Person making the amendment Relationship to the case Patent applicant Teijin Ltd., 1-11 Minamihonmachi, Higashi-ku, Osaka (300) Representative Tomoo Tokusue 5 From the end of page 11 to the first line of page 12 of the specification to be amended, "0.25% by weight was contained in the polymer" was deleted and replaced by k [Example 1.2 and In No. 3, 0.01% by weight of silica with an average particle size of 2.3μ, 0.02wt.
In Examples 4 and 5, calcium carbonate with an average particle size of 2.4 μm was contained in the polymer at 3% by weight.
．． 02% by weight and 0.03% by weight - incorporated into the polymer. Furthermore, in Comparative Example 1, the same silica as in Example 1 was used as o,
In Comparative Example 2 and Comparative Example 3, clay with an average particle size of O, S + μ was dispersed in a polymer with an average particle size of 0.0% by weight.
3% by weight and 0.08% by weight. ” is inserted.

Claims (1)

[Scope of Claims] A laminated film comprising a metal light-reflecting layer provided on the surface of a film made of a flexible polymer. The film contains an inert substance, mold rice, and there are fine protrusions on the surface of the film, and these protrusions are the length of the scanning line of the film surface. P) Height a * Number of protrusions of 15lK or more...
...-1・～1・O-1 whole central number ...
...-5OO to zsoo conditions are satisfied, and the total haze of the film is 4% when converted to a thickness of 3m5va.
A vapor deposited film characterized by the following: