CN214400357U - Dyed self-adhesive asphalt coiled material release film - Google Patents
Dyed self-adhesive asphalt coiled material release film Download PDFInfo
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- CN214400357U CN214400357U CN202022647051.7U CN202022647051U CN214400357U CN 214400357 U CN214400357 U CN 214400357U CN 202022647051 U CN202022647051 U CN 202022647051U CN 214400357 U CN214400357 U CN 214400357U
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Abstract
The utility model belongs to self-adhesive asphalt coiled material field discloses a dyeing self-adhesive asphalt coiled material is from type membrane. The release film sequentially comprises an isolation layer, an EVOH barrier layer, a silicone oil carrier film and a dyed silicone oil layer from top to bottom; the isolation layer is used for carrying out physical protection and reflection sunlight irradiation on the release film and forming color difference with the dyed silicon oil layer; the EVOH barrier layer is a transparent or semitransparent film; the silicone oil carrier film is a transparent or semitransparent film; the dyed silicone oil layer is a silicone oil layer dyed by a colorant. The utility model discloses a from type membrane can effectively prevent the ageing and destruction of asphalt material, the oil content of appearing in the effective separation pitch oozes to the membrane skin, and dyeing silicone oil coating is back on the carrier membrane, and the silicone oil that does not scribble the point and store back silicone oil and arouse to pitch migration lacks the point all can directly perceived understanding.
Description
Technical Field
The utility model belongs to self-adhesive asphalt coiled material field specifically relates to a dyeing self-adhesive asphalt coiled material is from type membrane.
Background
Self-adhesive asphalt waterproof coiled material silicon-coated isolation material is widely used as a common release material. The release film mainly comprises two types of release paper and release film, the release paper has smaller application range due to the problems of high price, deformation when meeting water, easy formation of crease and the like, and the acceptance of the release film in the industry is higher, wherein the release film taking PP, PE and PET as carriers is the most extensive. However, different carriers have different physical properties and are selected from different coil varieties, and PP and PE base materials have the characteristics of high flexibility and good extensibility, and the carrier is mostly adopted for self-adhesive asphalt waterproof coils. However, this carrier also has the disadvantages of poor aging resistance, poor oil resistance, and easy penetration of asphalt oil.
The current production technology of release films is mainly that a carrier film is prepared through processes of blow molding, tape casting and the like, then silicone oil is coated on the carrier film through heat curing or light curing, and then the required release film is prepared through processes of drying, printing and the like. Commonly used carrier films are prepared by coextrusion of three or five layers.
The method for evaluating the release effect of the release film can be simply described as testing the release force between the film and the adhesive after the adhesive is bonded with the release film. The method is the most common and practical method for evaluating release paper and release film. The method is also well applied to the evaluation of the anti-sticking effect of the self-adhesive asphalt coiled material release film.
The evaluation of the type and the anti-sticking effect of the release film has good feedback on the development stage and the laboratory stage of the film, but has a plurality of problems in the practical application of the self-adhesive asphalt waterproof roll material:
1) oil bleed out problems in self-adhesive asphalt. The self-adhesive asphalt is prepared by mixing asphalt and various modifiers, and small molecular oil in the asphalt is easily separated out from a protogen system after storage to form an unstable structure and is gathered on the surface of the self-adhesive asphalt. The conventional PP film or PE film has poor barrier property on small molecular oil, and under the combined action of thermal oxygen and sunlight, the oil easily migrates from a silicone oil surface of the release film to a separation surface, so that the surface of the film is yellowed, even becomes brittle and pulverizes.
2) After the silicon-coated release film is bonded with self-adhesive asphalt and stored, the silicon oil can migrate from the release film to the asphalt layer to cause the release film anti-sticking performance to be reduced due to different curing firmness of the silicon oil on the release film.
3) When the anti-sticking effect of the release film is evaluated, the release film can be removed from the self-adhesive asphalt coiled material only through external force so as to test the anti-sticking property of the release film, the adhesiveness and the uniformity of the silicone oil cannot be visually evaluated, and the coating of the silicone oil cannot be identified.
4) In the construction process, the separability of the release film can not be effectively identified before the film is torn, and particularly under the condition of high temperature in summer, the release film can not be separated from the self-adhesive asphalt, so that the economic losses such as construction period delay and material waste are caused.
Therefore, in order to overcome the defects of the release film currently applied to the asphalt waterproof roll, a new release film capable of meeting the requirements of the asphalt waterproof roll is urgently needed to be provided.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the defect of prior art, provide a dyeing self-adhesion pitch coiled material from type membrane. The utility model discloses a from type membrane can effectively prevent asphalt material's ageing and destruction, the oil content of separation in the effective separation pitch is oozed to the membrane skin. The utility model discloses introduce the colorant in silicone oil, a small amount of colorant can change the silicone oil colour. After the dyeing silicone oil is coated on the carrier membrane, the uncoated point and the silicone oil missing point caused by the migration of the silicone oil to the asphalt after storage can be visually known.
In order to achieve the purpose, the utility model provides a dyed self-adhesive asphalt coiled material release film, which comprises an isolation layer, an EVOH barrier layer, a silicon oil carrier film and a dyed silicon oil layer from top to bottom in sequence;
the isolation layer is used for carrying out physical protection and reflection sunlight irradiation on the release film and forming color difference with the dyed silicon oil layer;
the EVOH barrier layer is a transparent or semitransparent film;
the silicone oil carrier film is a transparent or semitransparent film;
the dyed silicone oil layer is a silicone oil layer dyed by a colorant.
Preferably, the barrier layer is a film having an opacity of less than 100%.
Preferably, the isolation layer is a PP or PE film.
Preferably, the silicone oil carrier film is a PP or PE film.
Preferably, the thickness of the release film is 0.03-0.05 mm.
Preferably, the thickness of the isolation layer is 0.01-0.015 mm.
Preferably, the thickness of the EVOH barrier layer is 0.01-0.02 mm.
Preferably, the thickness of the silicone oil carrier film is 0.01-0.015 mm.
Preferably, the colorant is a dissolving colorant.
Preferably, the colorant is a yellow or red azo dye.
The technical scheme of the utility model following beneficial effect has:
(1) the utility model discloses a compound one deck EVOH barrier layer in traditional double-deck PP or PE carrier. EVOH (ethylene-vinyl alcohol copolymer) is not only chemically stable, but also can be easily coextruded with other kinds of PP/PE films, and has the processability of ethylene and the barrier property of vinyl alcohol. The barrier property can be realized by blocking air and O2External factors such as ultraviolet rays and water penetrate through the membrane to accelerate the aging and the damage of the asphalt material, so that the maintenance of various performances of the self-adhesive asphalt is improved; on the other hand, EVOH has good oil resistance, and when the EVOH is compounded as an oil-resistant layer, the EVOH can effectively prevent oil separated from asphalt from seeping to the outer layer of the membrane, greatly reduce the aging of asphalt materials and prevent the outer layer of the isolation membrane from yellowing.
(2) The utility model discloses in all make transparent or translucent state with EVOH barrier layer and silicon oil carrier membrane, the colour change of easy lower floor's dyeing silicon oil layer is observed.
(3) After the silicone oil in the prior art is coated on the carrier film, the curing firmness and the coating uniformity of the silicone oil cannot be effectively identified. The utility model discloses add the colorant in silicone oil, as the indicator of silicone oil coating uniformity and stability. The color of the silicone oil can be changed by a small amount of colorant. The silicone oil coating with color is solidified on the surface of the carrier film, thereby playing a role of anti-sticking. The uniformity of the silicone oil application can be identified by observing the film surface appearance for the film material itself. In the application process, the migration condition of the surface silicone oil to the asphalt can be identified through the integral color change of the film, and then the silicone oil retentivity and the film tearing property can be judged.
(4) The utility model discloses a can effectively promote self-adhesion pitch coiled material appearance quality, storage stability and production and the problem discernment of storage process from the type membrane, have good application prospect to promoting self-adhesion pitch coiled material quality control.
Other features and advantages of the present invention will be described in detail in the detailed description which follows.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout the exemplary embodiments of the present invention.
Fig. 1 shows the utility model provides a dyeing self-adhesion asphalt coiled material from the schematic structure drawing of type membrane.
Fig. 2 shows the utility model provides a dyeing self-adhesion asphalt coiled material from the theory of operation schematic diagram of EVOH barrier layer of type membrane.
Fig. 3 shows a migration schematic diagram of a dyed silicone oil layer of a release film of a dyed self-adhesive asphalt coiled material provided by the utility model.
Fig. 4 shows a schematic structural diagram of a dyed self-adhesive asphalt coiled material release film provided according to embodiment 1 of the present invention.
Fig. 5 shows a schematic structural diagram of a dyed self-adhesive asphalt coiled material release film provided according to embodiment 2 of the present invention.
Fig. 6 shows a schematic structural diagram of a conventional PE silicon-coated release film according to the present invention, provided in comparative example 1.
Fig. 7 shows a schematic structural diagram of a conventional PP silicon-coated release film provided according to comparative example 2 of the present invention.
The reference numerals are explained below:
1-an isolation layer; 2-EVOH barrier layer; 3-a silicone oil carrier film; 4-dyeing a silicone oil layer; 5-self-adhesive asphalt; 6-small molecule oil; 7-external factors; 8-light blue PE film isolation layer; 9-a transparent EVOH barrier layer; 10-translucent PE silicone oil carrier film; 11-a dyed silicone oil layer colored with a yellow azo dye; 12-light blue PP film isolation layer; 13-translucent PP silicone oil carrier film; 14-a dyed silicone oil layer colored with a red azo dye; 15-silicon oil layer.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The utility model provides a dyed self-adhesive asphalt coiled material release film, which comprises an isolation layer, an EVOH barrier layer, a silicone oil carrier film and a dyed silicone oil layer from top to bottom in sequence;
the isolation layer is used for carrying out physical protection and reflection sunlight irradiation on the release film and forming color difference with the dyed silicon oil layer;
the EVOH barrier layer is a transparent or semitransparent film;
the silicone oil carrier film is a transparent or semitransparent film;
the dyed silicone oil layer is a silicone oil layer dyed by a colorant.
The utility model discloses in, after making silicone oil become the colorant colour, the silicone oil after will dyeing is in according to normal technology coating on the silicone oil carrier membrane, according to normal technology solidification, can make dyeing silicone oil layer solidification on silicone oil carrier membrane surface, and then play antiseized effect.
In one example, the color of the isolation layer should be a color with opacity less than 100%, that is, the color of the isolation layer should be a color which is easily color-different from the dyed silicone oil layer, and the color of the isolation layer is preferably a light color such as gray (RGB value: 128, 128, 128) or light blue (HSL value: 195, 53, 79).
The utility model discloses in, the isolation layer with dyeing silicone oil reservoir should form the colour difference to after coloring silicone oil, observe the coating and have the utility model discloses a during from the self-adhesive asphalt coiled material of type membrane, what see is the synthetic colour of isolation membrane and colored silicone oil, if silicone oil because the solidification is not firm on the carrier membrane and under the effect of the small molecule oil content in pitch, easily migrate and dissolve to self-adhesive asphalt, what observe then is the synthetic colour of surface isolation membrane and black self-adhesive asphalt. Therefore, the migration condition of the silicone oil can be easily observed from the appearance, and the firmness of the silicone oil and the easiness of stripping the release film can be judged.
In one example, the isolation layer is a PP or PE film.
In one example, the silicone oil carrier film is used as a carrier film of the dyed silicone oil layer, and a PP or PE film is selected.
The utility model discloses in, prior art scribble silicon one side from type membrane and adhere the back with self-adhesion pitch, oxygen and ultraviolet ray in the air can pierce through the membrane and then arouse the ageing with higher speed of self-adhesion pitch, the utility model discloses the isolation layer with increase the EVOH barrier layer between the silicon oil carrier film, can effectively prevent including air, O barrier layer2External factors including ultraviolet rays and water damage the self-adhesive asphalt. In addition, in the prior art, the small molecule oil in the self-adhesive asphalt is easy to separate out from the self-adhesive asphalt after being stored, and diffuses and seeps out through the isolating membrane. The utility model discloses after adding the EVOH barrier layer, the oil content of separation out meets the EVOH barrier layer and stops outward seepage promptly, can reduce asphalt material's ageing by to a great extent like this to prevent outer barrier film etiolation.
The utility model discloses in, because follow-up needs are observed from the application effect that the type membrane adheres on self-adhesion pitch, consequently, the EVOH barrier layer with transparent or translucent film is made to the silicon oil carrier membrane, and the change of easy lower floor's dyeing silicone oil layer is observed.
In one example, the thickness of the release film is 0.03-0.05 mm, wherein the thickness of the isolation layer is 0.01-0.015 mm; the thickness of the EVOH barrier layer is 0.01-0.02 mm; the thickness of the silicone oil carrier membrane is 0.01-0.015 mm.
In one example, the colorant is a soluble colorant, so that the uniformity of the silicone oil coating can be identified by observing the surface appearance of the release film, and the migration condition of the silicone oil to asphalt can be identified through the color change of the whole film during the application process, so as to judge the silicone oil retentivity and the tearable film property. More preferably, the colorant is a yellow or red azo dye.
The present invention will be described in detail with reference to examples.
In the various embodiments described below, it is preferred that,
the PE/PP film is selected from Xiongxian warship and sea waterproof auxiliary material company Limited;
the EVOH barrier layer is selected from Xiongxian warship sea waterproof auxiliary material limited company;
silicone oil was purchased from Dow Corning as SYL-OFF SB 7558.
Example 1
The embodiment provides a dyed self-adhesive asphalt coiled material release film, as shown in fig. 4, the release film sequentially comprises a light blue PE film isolation layer 8, a transparent EVOH isolation layer 9, a translucent PE silicone oil carrier film 10 and a yellow azo dye-colored dyed silicone oil layer 11 from top to bottom;
in this embodiment, the dyed silicone oil layer 11 colored with yellow azo dye is coated on the PE silicone oil carrier film 10 according to a normal process, and is cured according to the normal process, so that the dyed silicone oil layer 11 colored with yellow azo dye is cured on the surface of the PE silicone oil carrier film 10, thereby achieving an anti-sticking effect.
The light blue PE film isolating layer 8 is used for carrying out physical protection and reflection of sunlight irradiation on the release film, and forms color difference with the dyed silicone oil layer 11 colored by the yellow azo dye; the opacity of the light blue in the light blue PE film barrier layer 8 is less than 100%;
in this embodiment, the light blue PE film separation layer 8 and the dyed silicone oil layer 11 colored with yellow azo dye form a color difference, so that when the self-adhesive asphalt roll coated with the release film of this embodiment is observed after coloring the silicone oil, the composite color of the separation film and the colored silicone oil is observed, if the silicone oil is not firmly cured on the carrier film and is easily migrated and dissolved into the self-adhesive asphalt under the action of the small molecular oil component 6 in the asphalt, the composite color of the surface separation film and the black self-adhesive asphalt is observed. Therefore, the migration condition of the silicone oil can be easily observed from the appearance, and the firmness of the silicone oil and the easiness of stripping the release film can be judged. The method specifically comprises the following steps:
when the release film of the embodiment is not adhered to the self-adhesive asphalt, the release film of the embodiment is light green when observed from top to bottom;
after the release film of the embodiment is adhered to the self-adhesive asphalt, the appearance of the release film of the embodiment is green;
if the dyed silicone oil layer 11 colored with the yellow azo dye migrates into the self-adhesive asphalt, a brownish black color is observed at the migration position (i.e., silicone oil missing point); therefore, the firmness of the silicone oil attached to the release film can be intuitively understood.
In this embodiment, the addition of the transparent EVOH barrier layer 9 can effectively prevent the inclusion of air and O2External factors 7 including ultraviolet rays and water damage the self-adhesive asphalt; after the transparent EVOH barrier layer 9 is added, the precipitated small-molecular oil component 6 stops seeping out when meeting the transparent EVOH barrier layer 9, so that the aging of the asphalt material can be greatly reduced, and the yellowing of the outer-layer separation film can be prevented. Through the transparent EVOH barrier layer 9 and the translucent PE silicone oil carrier film 10, it is easy to observe changes in the lower yellow azo dye-colored dyed silicone oil layer 11.
The thickness of the release film of this embodiment is 0.035mm, wherein, the thickness of light blue PE membrane isolation layer 8 is 0.01mm, the thickness of transparent EVOH barrier layer 9 is 0.015mm, the thickness of translucent PE silicone oil carrier film 10 is 0.01 mm.
Example 2
The embodiment provides a dyed self-adhesive asphalt coiled material release film, as shown in fig. 5, the release film sequentially comprises a light blue PP film isolation layer 12, a transparent EVOH isolation layer 9, a translucent PP silicone oil carrier film 13 and a red azo dye-colored dyed silicone oil layer 14 from top to bottom;
the light blue PP film isolation layer 12 is used for carrying out physical protection and reflection of sunlight irradiation on the release film, and forms color difference with the dyed silicone oil layer 14 colored by the red azo dye; the opacity of the light blue in the light blue PP film isolating layer 12 is less than 100%;
the thickness of the release film of this embodiment is 0.04mm, wherein the thickness of the light blue PP film isolation layer 12 is 0.01mm, the thickness of the transparent EVOH barrier layer 9 is 0.015mm, and the thickness of the translucent PP silicone oil carrier film 13 is 0.015 mm.
The functions of the light blue PP film barrier layer 12, the transparent EVOH barrier layer 9, the translucent PP silicone oil carrier film 13, and the red azo dye-colored dyed silicone oil layer 14 are the same as those of example 1, and are not described herein again,
when the release film of the present embodiment is not adhered to the self-adhesive asphalt, the release film of the present embodiment is light purple when viewed from top to bottom.
After the release film of this embodiment is adhered to the self-adhesive asphalt, the appearance of the release film of this embodiment is purple.
If the red azo dye colored dyed silicone oil layer 14 migrates into the self-adhesive asphalt, a brownish black color is observed at the migration site (i.e., the point of silicone oil loss).
Therefore, the firmness of the silicone oil attached to the release film can be intuitively understood.
Comparative example 1
The present comparative example provides a conventional PE silicon-coated release film, as shown in fig. 6, the release film sequentially includes, from top to bottom, a light blue PE film isolation layer 8, a translucent PE silicone oil carrier film 10, and a silicone oil layer 15, and the thickness of the release film of the present comparative example is 0.035mm, wherein the thickness of the light blue PE film isolation layer 8 is 0.015mm, and the thickness of the translucent PE silicone oil carrier film 10 is 0.02 mm. The opacity of the light blue in the light blue PE film barrier layer 8 is less than 100%.
Comparative example 2
The present comparative example provides a conventional PP silicon-coated release film, as shown in fig. 7, the release film sequentially includes, from top to bottom, a light blue PP film isolation layer 12, a translucent PP silicone oil carrier film 13, and a silicone oil layer 15, the thickness of the release film of the present comparative example is 0.04mm, wherein the thickness of the light blue PP film isolation layer 12 and the thickness of the translucent PP silicone oil carrier film 13 are both 0.02 mm. The opacity of the light blue in the light blue PP film barrier layer 12 is less than 100%.
Test example 1
In this test example, the release films of the dyed self-adhesive asphalt coiled materials provided in examples 1 and 2 were adhered to self-adhesive asphalt according to a normal laminating process to be laminated, and the performances of the release films of the dyed self-adhesive asphalt coiled materials provided in examples 1 and 2 were observed and tested according to the test method of GB/T328.20 "asphalt waterproofing coiled material seam peeling performance", and the test results of examples 1 and 2 are shown in tables 1 and 2, respectively. As shown in table 1, the self-adhesive asphalt roll using the release film of example 1 still had good adhesiveness after being stored indoors for 180 days, and the adhesiveness of the roll was remarkably reduced after being stored outdoors for 30 days. Meanwhile, the color difference of the film surface can be obviously observed after the film is stored indoors for 180 days and placed outdoors for 30 days, and the migration of the silicone oil is proved. As shown in table 2, the self-adhesive asphalt roll using the release film of example 2 still had good adhesiveness after being stored indoors for 90 days, and the adhesiveness of the roll was remarkably reduced after being stored outdoors for 30 days. Meanwhile, the color difference of the film surface can be obviously observed after the film is stored indoors for 90 days and placed outdoors for 7 days, and the migration of the silicone oil is proved.
Table 1 test results of application properties of release film of example 1
| Test items | Film surface appearance | Whether the film is colored poorly or not | Self-adhesive asphalt peel strength/(N/mm) |
| Just off line | Slight fold without oil leakage | Without change | 2.5 |
| Indoor storage 90d | Slight fold without oil leakage | Without change | 2.4 |
| Indoor storage 180d | Slight fold without oil leakage | Slight chromatic aberration | 2.2 |
| Outdoor setting 7d | Slight fold without oil leakage | Without obvious chromatic aberration | 2.1 |
| Placed outdoors for 30d | Slight wrinkling with little oil bleeding | Slight chromatic aberration | 1.8 |
| Outdoor placement 60d | Fold-weighted oil-bleeding area enlargement | Apparent color difference | 1.3 |
Table 2 application performance test results of release film of example 2
Test example 2
To compare the performance differences between the release films of examples 1 and 2 and the conventional silicon-coated release films of comparative examples 1 and 2, examples 1-2 and comparative examples 1-2 were treated and tested in the same environment according to the test method of GB/T328.20 "asphalt waterproofing roll seam peeling performance", and the test results are shown in tables 3 and 4. As can be seen from tables 3 and 4, the release films of examples 1 and 2 have significantly improved retention of the storage appearance and adhesiveness of self-adhesive asphalt compared with the conventional silicon-coated release films of comparative examples 1 and 2.
Table 3 comparison of release film properties of example 1 and comparative example 1
Table 4 comparison of release film properties of example 2 and comparative example 2
While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (10)
1. The release film is characterized by comprising an isolation layer, an EVOH barrier layer, a silicone oil carrier film and a dyed silicone oil layer from top to bottom in sequence;
the isolation layer is used for carrying out physical protection and reflection sunlight irradiation on the release film and forming color difference with the dyed silicon oil layer;
the EVOH barrier layer is a transparent or semitransparent film;
the silicone oil carrier film is a transparent or semitransparent film;
the dyed silicone oil layer is a silicone oil layer dyed by a colorant.
2. The dyed self-adhesive asphalt roll release film according to claim 1, wherein the release layer is a film having an opacity of less than 100%.
3. The dyed self-adhesive asphalt roll release film according to claim 2, wherein the release layer is a PP or PE film.
4. The dyed self-adhesive asphalt roll release film according to claim 1, wherein the silicone oil carrier film is a PP or PE film.
5. The dyed self-adhesive asphalt coiled material release film according to claim 1, wherein the thickness of the release film is 0.03-0.05 mm.
6. The dyed self-adhesive asphalt coiled material release film according to claim 5, wherein the thickness of the isolation layer is 0.01-0.015 mm.
7. The dyed self-adhesive asphalt coiled material release film according to claim 5, wherein the thickness of the EVOH barrier layer is 0.01-0.02 mm.
8. The dyed self-adhesive asphalt coiled material release film according to claim 5, wherein the silicone oil carrier film has a thickness of 0.01-0.015 mm.
9. The dyed self-adhesive asphalt web release film of claim 1 wherein the colorant is a soluble colorant.
10. The dyed self-adhesive asphalt web release film according to claim 9, wherein the colorant is a yellow or red azo dye.
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| CN202022647051.7U CN214400357U (en) | 2020-11-16 | 2020-11-16 | Dyed self-adhesive asphalt coiled material release film |
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