CN212684940U - Composite sheet with color-changing rainbow lines - Google Patents
Composite sheet with color-changing rainbow lines Download PDFInfo
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- CN212684940U CN212684940U CN202020137808.5U CN202020137808U CN212684940U CN 212684940 U CN212684940 U CN 212684940U CN 202020137808 U CN202020137808 U CN 202020137808U CN 212684940 U CN212684940 U CN 212684940U
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Abstract
The utility model provides a composite sheet with rainbow line discolours belongs to composite sheet technical field. The utility model discloses composite sheet with rainbow line discolours includes rainbow film layer (3), and rainbow film layer (3) include the resin layer more than two-layer, and adjacent resin layer has different refractive index, and rainbow film layer (3) can make full use of light interference principle like this, makes composite sheet present sky rainbow effect under light shines, and composite sheet can demonstrate the illusion-colour effect of complete difference under different distances, different angles, can satisfy packing trades such as daily use chemicals demand diversified to the packing.
Description
Technical Field
The utility model belongs to the technical field of composite sheet, a composite sheet with rainbow line discolours is related to.
Background
The composite sheet material appears in the 90 s of the last century, is a semi-finished product for producing the composite sheet material, and due to the advantage of the cost, the composite sheet material develops very rapidly in the packaging in the fields of daily chemicals and the like; however, the composite sheet has a single appearance color effect all the time, and in the face of increasingly diversified market demands of the daily chemical packaging industry, the composite sheet with the color-changing rainbow pattern effect is required to increase the appearance visual impact of the product by matching with light and sunlight.
Disclosure of Invention
In order to overcome the above disadvantages and deficiencies of the prior art, the present invention provides a composite sheet with color-changing rainbow patterns.
The technical scheme of the utility model is that: a composite sheet having color-changing rainbow patterns comprises a rainbow film layer 3, the rainbow film layer 3 comprising two or more resin layers, adjacent resin layers (i.e., connected resin layers) being formed of resins having different refractive indices. The rainbow film is a multilayer film, and the multi-angle layered color change is formed by refraction and interference among layers under the irradiation of light by fully utilizing the principle of light interference, and has the effect like a sky rainbow. The magic effect of the rainbow film is that the rich light effects of the rainbow film base materials with different distances and different angles can present completely different magic color effects.
As a preferred embodiment of the composite sheet of the present invention, the resin layers are arranged in a periodically alternating manner. For example, the rainbow film layer is formed by melt-extruding more than two kinds of resins with different refractive indexes and is sequentially overlapped at intervals, namely, the rainbow film layer is in a periodic alternating structure such as ABAB, ABABAB, ABCABC and the like.
As a preferred embodiment of the composite sheet of the present invention, the rainbow film layer 3 includes 100 or more resin layers. Thus, the rainbow film layer 3 has more abundant colors under the irradiation of light.
As a preferred embodiment of the composite sheet of the present invention, the thickness of each resin layer is 100-1000 nm.
As a preferred embodiment of the composite sheet of the present invention, the thickness of each resin layer is the same. When the thickness of each resin layer is the same, strong positive interference is generated to the reflected light with a certain wavelength, and the rainbow effect is more obvious.
As a preferred embodiment of the composite sheet material of the present invention, the thickness of the rainbow film layer 3 is 16 to 36 μm.
As a preferable embodiment of the composite sheet of the present invention, the substrate of the resin layer is polymethyl methacrylate, polyester, or polybutylene terephthalate.
As a preferred embodiment of the composite sheet of the present invention, the composite sheet includes a rainbow film layer 3, a second adhesive layer 4 and an inner layer 7 which are sequentially adhered from outside to inside.
As a preferred embodiment of the composite sheet of the present invention, the inner layer 7 is a heat-seal inner layer.
As a further preferable embodiment of the composite sheet of the present invention, the inner layer 7 is a polyethylene material layer; the second bonding layer 4 is a polyethylene resin layer, a terpolymer resin layer or a polyurethane glue layer.
As a preferable embodiment of the composite sheet of the present invention, an intermediate layer 5 and a third adhesive layer 6 are further provided between the second adhesive layer 4 and the inner layer 7, wherein the intermediate layer 5 is adhered to the inner side of the second adhesive layer 4, and the third adhesive layer 6 is adhered to the outer side of the inner layer 7.
As a further preferable embodiment of the composite sheet of the present invention, the intermediate layer 5 is an aluminum foil layer, a nylon material layer or a polyester material layer; the third bonding layer 6 is a polyethylene resin layer, a terpolymer resin layer or a polyurethane glue layer. The middle layer is made of high-strength materials such as aluminum foil, nylon materials or polyester materials, and the strength of the sheet can be improved.
As a preferred embodiment of the composite sheet of the present invention, the composite sheet includes an outer layer 1, a first adhesive layer 2, a rainbow film layer 3, a second adhesive layer 4 and an inner layer 7 which are sequentially adhered from outside to inside.
As a further preferable embodiment of the composite sheet of the present invention, the outer layer 1 is a polyethylene film layer, a polypropylene film layer or a polyester film layer; the first bonding layer 2 is a polyethylene resin layer, a terpolymer resin layer or a polyurethane glue layer.
The utility model discloses beneficial effect for prior art does: the utility model discloses composite sheet includes the rainbow rete, and this rainbow rete utilizes the light interference principle, is multi-angle laminar color and luster change under light shines, gives composite sheet very strong rainbow line visual effect, in addition, the utility model discloses composite sheet main color system includes red end green glow, blue end golden light, blue end purple light three big series, can satisfy packing trades such as daily use chemicals demand diversified to the packing.
Drawings
Fig. 1 is a schematic structural diagram of the composite sheet with color-changing rainbow patterns according to the present invention.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.
Fig. 1 shows the structure of the composite sheet with color-changing rainbow patterns of the present invention. As shown in the figure, the composite sheet comprises an outer layer 1, a first bonding layer 2, a rainbow film layer 3, a second bonding layer 4, a middle layer 5, a third bonding layer 6 and an inner layer 7 which are sequentially bonded layer by layer from outside to inside, wherein the outer layer 1 is a high-transparency polyethylene film layer, a polypropylene film layer or a polyester film layer; the rainbow film layer 3 is a plastic composite film with periodic alternate structure such as ABAB, ABABAB, ABCABC and the like, which is formed by melt extrusion of more than two kinds of resin with different refractive indexes and sequential alternate superposition, the thickness of each resin layer is 1-1000nm, and the thickness of the rainbow film layer 3 is preferably 16-36 μm; the middle layer 5 is an aluminum foil layer with very good mechanical property, a nylon material layer or a polyester material layer; the inner layer 7 is a heat-sealable inner layer, such as a heat-sealable layer of polyethylene material; the first bonding layer 2, the second bonding layer 4 and the third bonding layer 6 are polyethylene resin layers or terpolymer resin layers adopting an extrusion process, or polyurethane glue layers adopting a dry process. The composite sheet shows abnormal bright light under the irradiation of sunlight, and the visual effect of rainbow patterns can be realized.
A manufacturing process of the composite sheet comprises the following steps:
(1) the outer layer 1 and the rainbow film layer 3 are bonded together by polyurethane glue by adopting a dry process to form a first layer, and the parameters of the dry process can be selected as follows: the processing temperature is 220-;
(2) the first layer and the middle layer 5 are bonded together by polyethylene resin to form a second layer by adopting an extrusion process, wherein the parameters of the extrusion process can be selected from the processing temperature of 220-320 ℃, the unreeling tension of 15-25kg/cm, the reeling tension of 20-35kg/cm and the pressure of 4-6 kg;
(3) the second layer and the inner layer 7 are bonded together by polyethylene resin by adopting an extrusion process to prepare a semi-finished product, and the parameters of the extrusion process can be selected from the processing temperature of 220-;
(4) and cutting the semi-finished product into rolls to obtain the composite sheet, wherein the parameters of the cutting process can be selected from 20-30kg/cm of unreeling tension, 25-40kg/cm of reeling tension and 50-150 m/min of speed.
The 10 batches of composite sheets prepared by the above method were tested and the results are shown in table 1.
TABLE 1
Claims (9)
1. The composite sheet material with the color-changing rainbow patterns is characterized by comprising a rainbow film layer (3), a second bonding layer (4) and an inner layer (7) which are sequentially bonded from outside to inside, wherein the rainbow film layer (3) comprises more than two resin layers, and adjacent resin layers have different refractive indexes.
2. The composite sheet according to claim 1, wherein the resin layers are arranged in a periodically alternating manner.
3. The composite sheet according to claim 1, wherein the rainbow film layer (3) comprises 100 or more resin layers, and each resin layer has a thickness of 100-1000 nm.
4. Composite sheet material according to claim 1, characterised in that the thickness of the rainbow film layer (3) is 16-36 μm.
5. The composite sheet according to claim 1, wherein the substrate of the resin layer is polymethyl methacrylate, polyester, or polybutylene terephthalate.
6. Composite sheet according to claim 1, wherein the inner layer (7) is a heat-sealable inner layer and is a layer of polyethylene material; the second bonding layer (4) is a polyethylene resin layer, a terpolymer resin layer or a polyurethane glue layer.
7. Composite sheet material according to claim 1, characterised in that between the second adhesive layer (4) and the inner layer (7) there is further provided an intermediate layer (5) and a third adhesive layer (6) which are bonded to each other, wherein the intermediate layer (5) is bonded to the inner side of the second adhesive layer (4) and the third adhesive layer (6) is bonded to the outer side of the inner layer (7).
8. Composite sheet material according to claim 7, characterised in that the intermediate layer (5) is a layer of aluminium foil, nylon or polyester material; the third bonding layer (6) is a polyethylene resin layer, a terpolymer resin layer or a polyurethane glue layer.
9. The composite sheet material according to claim 1, wherein the composite sheet material comprises an outer layer (1), a first bonding layer (2), a rainbow film layer (3), a second bonding layer (4) and an inner layer (7) which are bonded in sequence from outside to inside, and the outer layer (1) is a polyethylene film layer, a polypropylene film layer or a polyester film layer; the first bonding layer (2) is a polyethylene resin layer, a terpolymer resin layer or a polyurethane glue layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020137808.5U CN212684940U (en) | 2020-01-20 | 2020-01-20 | Composite sheet with color-changing rainbow lines |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020137808.5U CN212684940U (en) | 2020-01-20 | 2020-01-20 | Composite sheet with color-changing rainbow lines |
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| CN212684940U true CN212684940U (en) | 2021-03-12 |
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| CN202020137808.5U Active CN212684940U (en) | 2020-01-20 | 2020-01-20 | Composite sheet with color-changing rainbow lines |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114074467A (en) * | 2021-11-18 | 2022-02-22 | 厦门长塑实业有限公司 | Polyamide film with colorful metal texture and preparation method and application thereof |
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2020
- 2020-01-20 CN CN202020137808.5U patent/CN212684940U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114074467A (en) * | 2021-11-18 | 2022-02-22 | 厦门长塑实业有限公司 | Polyamide film with colorful metal texture and preparation method and application thereof |
| CN114074467B (en) * | 2021-11-18 | 2022-09-06 | 厦门长塑实业有限公司 | Polyamide film with colorful metal texture and preparation method and application thereof |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220328 Address after: 526000 No.2 Beijiang Avenue, Zhaoqing hi tech Zone, Zhaoqing City, Guangdong Province Patentee after: GUANGDONG RUIYUAN NEW MATERIAL Co.,Ltd. Address before: 526000 self compiled No. 1 on the first floor of plant 2 of Guangdong Ruiyuan New Material Co., Ltd., No. 2, Beijiang Avenue, Zhaoqing high tech Zone, Zhaoqing City, Guangdong Province Patentee before: Zhaoqing Ruixin Film Technology Co.,Ltd. |
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| TR01 | Transfer of patent right |