JP3451559B2 - Outdoor building material sheet - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outdoor building material sheet mainly used around an entrance such as an exterior door, bay window, flower box, shutter, and the like, particularly in a place where sunlight is well exposed. It relates to the sheet used. 2. Description of the Related Art Conventionally, as an outdoor building material sheet, as shown in FIG. 8, a second resin layer made of an acrylic film is formed on a first resin layer a made of a vinyl chloride resin (hereinafter referred to as PVC).
As shown in FIG. 9, a two-layer structure in which a resin layer b is laminated, a second layer made of polyvinylidene fluoride (PVDF) on a first resin layer c made of an acrylic film
The resin layer d has a three-layer structure in which a third resin layer e made of PVC is laminated on the lower side, and the first and second resin layers f and f, in which an acrylic film is laminated as shown in FIG. The third and fourth resin layers h and i made of polyvinylidene fluoride are respectively laminated on top and bottom of g.
For example, those having a layer structure are used. [0003] Such an outdoor building material sheet and a substrate such as MDF (Medium Density Fiber B)
oad, medium-density fiber material), plastics, as bonding working method with inorganic board or the like, roll press, but wrapping or the like is used, for vacuum forming forms processing have increased in recent years, after forming the shape At present, it cannot be used because the sheet is peeled off from the substrate due to the shrinkage of PVC. [0004] Such peeling of the building material sheet is caused by the fact that PVC requires 20 to 25 plasticizers due to the requirement of weather resistance.
PHR mixed, Crushberg flexible temperature is 25
Since ℃ is around, because the force extended building material sheet during the vacuum forming shape shrinks after vacuum forming shape is large. for that reason,
Sheet used in vacuum forming forms applications, to have a vacuum forming shape retention, but it is common to the 0~12PHR the amount of plasticizer in consideration of the heat shrinkage after vacuum forming shape, this if so, the crash Berg flexible temperature 40 to 65 ° C., and the thermal shrinkage of the sheet extending at vacuum forming forms plasticizer described above is much smaller than a sheet of about 20 PHR, vacuum <br/> formed shape Detachment from the substrate due to subsequent heat shrinkage does not occur,
Poor weather resistance. In addition, it is conceivable to use only an acrylic resin, but in such a case, cost is high and moldability is poor. [0005] Further, as described in, for example, Japanese Patent Application Laid-Open No. 5-4309, vacuum forming using a PVC base sheet.
In the form for the decorative sheet, as the substrate sheet, but may crash Berg flexible temperature Ru with more than 50 ° C. has been proposed, in this case inferior in weather resistance, it can not be used as outdoor . [0006] By the way, the term "vacuum formed shape", refers to a processing method for bonding the film and the substrate by the vacuum formed shape machine, the vacuum formed shape machine, vacuum press machine also includes a membrane press. Further, the vacuum can be vacuum formed shape formed
In order to have a shape of the vacuum formed shape during building material sheet properly along it to the substrate, it is necessary that there is no building material sheet shrinkage after vacuum forming shape. [0007] The present invention is to provide an outdoor construction material sheet having weatherability and vacuum forming shape retention. [0008] The present invention is based on an outdoor building material sheet having a sheet base layer having weather resistance. [0009] The invention according to claim 1 is that, under the sheet base layer,
Plasticizer amount is 0 to 12 PHR and thickness is 0.15 to 0.9
A first resin layer made of vinyl chloride resin having a thickness of 0 mm is provided.
And the sheet base layer is at least vinyl chloride.
Acrylic film over the second resin layer made of resin
And a third resin layer formed on the second resin layer.
The plasticizer amount of the vinyl chloride resin to be formed is 17 to 25 PHR.
Configuration. According to the first aspect of the present invention, PVC having a plasticizer amount of 0 to 12 PHR is provided under the weather-resistant sheet base layer.
Since the first resin layer made of
Since the resin layer has a vacuum forming shape retention, to ensure weather resistance, sheet substrate is inhibited from contracting after vacuum forming shape. An embodiment of the present invention will be described below in detail with reference to the drawings. In FIG. 1 showing a schematic structure, reference numeral 1 denotes an outdoor building material sheet, and a sheet P underneath a sheet base layer 2 having weather resistance.
A first resin layer 3 made of VC (crushberg flexible temperature: 45 ° C to 70 ° C) is provided. The sheet base layer 2 constituting the sheet surface is formed by laminating a third resin layer 5 made of an acrylic film on a second resin layer 4 made of PVC. [0013] PVC constituting the second resin layer 4 is in the amount of plasticizer 17～25PHR, but so as to impart weather resistance to the sheet substrate 2, in which shrinkage occurs after vacuum forming shape . PVC forming the third resin layer 3 is in the amount of plasticizer 0～10PHR, shrinkage little after vacuum forming shape,
It has vacuum formability. Therefore, by stacking the first resin layer 3 on the lower side of the sheet substrate 2 as a backup member at their synergy, as a whole outdoor building material sheet 1, the weather resistance and vacuum forming the shape of the outdoor Is to be provided. The first, second and third resin layers 3, 4, 5
Are 0.15-0.50mm, 0.08-
0.20 mm, 0.015 to 0.10 mm. Here, the thickness of the first resin layer 3 is set to 0.15 to
0.90mm is thinner than 0.15mm,
Less the ratio of the first resin layer to the total, the crash Berg flexibility temperature of the whole sheet becomes low, then the shrinkage after vacuum forming the shape becomes large, it exceeds 0.9 mm, the thickness the total thickness of the sheet Too much, the thermal conductivity during vacuum forming is poor, it is difficult to follow the shape of the substrate, and when pasted to a sharp shape part, sharpness does not appear, it becomes a curved surface shape, and the cost increases This is because Further, the reason why the amount of the plasticizer of the PVC constituting the second resin layer 4 is 17 to 25 PHR is that if it is less than 17 PHR, it becomes hard and causes a decrease in weather resistance, and the weather resistance of the entire sheet is maintained for 8000 hours. is because can not, exceeds 25 phr, softens, crash Berg flexibility temperature of the whole sheet is lowered, because the shrinkage after vacuum forming the shape becomes larger. Also, the reason why the thickness of the second resin layer 4 is set to 0.08 to 0.20 mm is that if the thickness is smaller than 0.08 mm, the curved surface is elongated at the time of vacuum forming, so that the weather resistance of the thinned portion of the sheet is reduced. 0.2
If it is thicker than mm, the amount of plasticizer is around 20 PHR,
When the second resin layer too thick, crash Berg flexibility temperature of the whole sheet is lowered, because the shrinkage after vacuum forming the shape becomes larger. Generally, when the plasticizer amount is around 20 PHR, the crushberg softening temperature is 27 to 29 ° C,
To 45 ° C. in consideration of the shrinkage after the vacuum forming forms, this second resin layer becomes thick, so that the lower crash Berg flexibility temperature of the entire sheet. [0016] By configuring as above, the sheet substrate 2 constituting the sheet surface which light from the outside hits is the same structure as for the conventional outdoor those having weatherability, vacuum formed shapes Heat shrinkage may occur later. On the lower side of the sheet substrate 2, the third resin layer 3 having a vacuum forming shape retention
Because be provided with a third resin layer 3 is the sheet substrate 2 is prevented from contracting after vacuum forming shape. Therefore, by the synergistic effect of the two layers 2 and 3,
Come to a whole outdoor building material sheet 1 will have a weather resistance and vacuum forming the shape of the outdoor, it is possible to achieve both weather resistance and vacuum forming the shape of the outdoor. [0018] Subsequently, the test will be described was performed in weather resistance and vacuum forming shape with respect to the outdoor building material sheet 1. -Test 1-<Sample sheet> Sample 1 100 parts by weight of PVC (degree of polymerization: 800), plasticizer TOT
23 parts by weight of M (trioctyl trimellitate), 0.5 parts by weight of stabilizer (Ba-Zn composite stabilizer, chelator, ethoxylated soybean oil), 0.5 part by weight of ultraviolet absorber (benzotriazole type), good weather resistance Organic pigments (eg, polyazo-based, isoindolinone-based pigments)
0.12mm first PVC sheet 1 by calendering
To create a 1 (bar Ndo Chemical Co., Ltd. A-8800 type).
Here, the ultraviolet absorber and the organic pigment have enhanced weather resistance. Further, 100 parts by weight of PVC (degree of polymerization: 800), 5 parts by weight of plasticizer (DOP), the balance of the stabilizer and the impact-resistant agent are mixed and stirred, and 0.2 parts by calendering.
A second PVC sheet 12 of mm is created. In addition, when the crushberg soft temperature of the 1st and 2nd PVC sheets 11 and 12 was measured by the crushberg measuring instrument according to JIS-K-6734, it was 25 degreeC and 50 degreeC, respectively. Then, as shown in FIG. 2, an acrylic film 13 (Acryprene HBS 001 manufactured by Mitsubishi Rayon Co., Ltd., thickness 50 μm) is laminated on the upper side of the first PVC sheet 11 and a second PVC sheet 12 is laminated on the lower side. Then, heat lamination was performed to form a three-layer structure. Sample 2 As shown in FIG.
(Thickness 5 μ) / Acrylic film 15 (thickness 50 μ) coextruded sheet 16 (Acryprene FL FBS-006 manufactured by Mitsubishi Rayon Co., Ltd.), first and second PVC sheets 1
Nos. 1 and 12 were sequentially laminated and heat-laminated to form a three-layer structure. Sample 3 As shown in FIG.
(Thickness 5μ) / Acrylic film 15 (Thickness 50μ) Coextruded sheet 16 (Acryprene FL FBS-006 manufactured by Mitsubishi Rayon Co., Ltd.), Acrylic film 13 (Acryprene HBS 001 manufactured by Mitsubishi Rayon Co., Ltd.) 50μ
m), the first PVC sheet 11 and the second PVC sheet 12
Were sequentially laminated and thermally laminated to form a five-layer structure. Sample 4 As shown in FIG. 5, an acrylic film 13 (Acryprene manufactured by Mitsubishi Rayon Co., Ltd.) was placed on the upper side of the first PVC sheet 11.
HBS 001, thickness 50 μm) were laminated and thermally laminated to form a two-layer structure. Sample 5 As shown in FIG. 6, from the upper side, a sheet 16 coextruded with a PVDF film (thickness 5 μm) 14 / acrylic film 15 (thickness 50 μm) (Acryprene FL FBS- manufactured by Mitsubishi Rayon Co., Ltd.) 006) and the first PVC sheet 11 were laminated and thermally laminated to form a three-layer structure. Sample 6 As shown in FIG. 7, an acrylic film 13 (Acryprene manufactured by Mitsubishi Rayon Co., Ltd.) was placed on the upper side of the second PVC sheet 12.
HBS 001, thickness 50 μm) were laminated and thermally laminated to form a two-layer structure. [0026] Test Method The sample sheet, bonded by vacuum forming shape pressurizing <br/> machining the substrate (aluminum material), was formed shape member. Vacuum formed shapes condition vacuum pressing machine: manufactured)-save Ltd. Adhesive: solvent urethane adhesive silicone rubber Temperature: 65 ° C. Pressure: 4.0 kg / cm ² pressing time: 150 seconds following, the sheet after forming the form thermal to evaluate shrinkage, the formed shape member to the gear in an oven set at 60 ° C. 2
The shrinkage of the sheet after standing for a day was measured. The weather resistance was evaluated according to JIS-K-67.
It was set for 8000 hours in a weatherometer (black panel thermometer 63 ° C.) according to No. 32, and the degree of discoloration and deterioration of the sheet after 8000 hours was measured. Test Results The results are shown in Table 1 below. [Table 1] From Table 1 above, as in Samples 1-3,
Below the conventional outdoor building material sheet and the structure of the same structure, by providing a resin layer having a vacuum forming shape retention, inhibiting the resin layer, a sheet that shrinks after vacuum forming shapes as backup material You can see that -Test 2- Subsequently, the amount of the plasticizer in the second resin layer (thickness 0.13 mm) and the thickness of the first resin layer (the amount of plasticizer 10 PHR) were varied in the same structure as the sample 1 shown in FIG. Tables 2 and 3 show the results of tests for weather resistance and vacuum moldability. [Table 2] [Table 3] From the above results, it is understood that the amount of the plasticizer of the vinyl chloride resin constituting the second resin layer is desirably 17 to 25 PHR. The first resin layer has a thickness of 0.1 mm.
It turns out that it is desirable that it is 15-0.9 mm. According to the first aspect of the present invention, as described above, the amount of the plasticizer is 0 to 12 PH under the weather-resistant sheet base layer.
Because it is provided with a first resin layer which does not shrink after vacuum forming the form with R, not only suitable for outdoor have weather resistance, prevent the sheet substrate by a first resin layer shrinks after vacuum forming shape MDF, plastic,
Bonding process with the substrate of the inorganic board or the like can be performed in a vacuum formed shapes. In addition, P having a plasticizer amount of 17 to 25 PHR
The combination of the second resin layer of VC and the third resin layer made of an acrylic film can ensure weather resistance. Further, the thickness of the first resin layer is set to 0.15 to
Since the 0.9 mm, advantageously in a vacuum formability, easily conform to a substrate at the time of vacuum forming, not greater shrinkage after vacuum forming shape.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic configuration view of a vacuum forming form sheet for outdoor. FIG. 2 is an explanatory diagram of sample 1. FIG. 3 is an explanatory diagram of sample 2. FIG. 4 is an explanatory diagram of sample 3. FIG. 5 is an explanatory diagram of sample 4 . FIG. 6 is an explanatory diagram of sample 5 . FIG. 7 is an explanatory diagram of sample 6 . FIG. 8 is an explanatory diagram of a conventional example. FIG. 9 is an explanatory diagram of a conventional example. FIG. 10 is an explanatory diagram of a conventional example. [EXPLANATION OF SYMBOLS] 1 outdoor vacuum forming shaped sheet 2 sheet substrate 3 first resin layer 4 and the second resin layer 5 third resin layer

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B32B 1/00-35/00

Claims (1)

(57) [Claims 1] The amount of plasticizer is 0 to 1 below the sheet base layer.
Chloride with 2PHR and thickness of 0.15-0.90mm
A first resin layer made of a vinyl resin is provided, and the sheet base layer is made of at least a vinyl chloride resin.
A third resin made of an acrylic film on the upper side of the second resin layer
Layers are laminated to form the second resin layer.
Outdoor building materials with 17-25 PHR of plasticizer
Sheet.