CN114103333A - Time-delay color-changing composite layer structure - Google Patents

Time-delay color-changing composite layer structure Download PDF

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Publication number
CN114103333A
CN114103333A CN202010886136.2A CN202010886136A CN114103333A CN 114103333 A CN114103333 A CN 114103333A CN 202010886136 A CN202010886136 A CN 202010886136A CN 114103333 A CN114103333 A CN 114103333A
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CN
China
Prior art keywords
layer
volatilization
color change
composite layer
change material
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Pending
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CN202010886136.2A
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Chinese (zh)
Inventor
爽·萨
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Individual
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Individual
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Priority to CN202010886136.2A priority Critical patent/CN114103333A/en
Publication of CN114103333A publication Critical patent/CN114103333A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
    • G09F3/02—Forms or constructions
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
    • G09F3/02—Forms or constructions
    • G09F2003/0257—Multilayer

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Catching Or Destruction (AREA)

Abstract

The invention relates to a time-delay color-changing composite layer structure. The composite layer structure includes a bottom layer; at least one volatilization layer, wherein each volatilization layer of the at least one volatilization layer is formed of a volatilizable material that will gradually volatilize after contact with air, but is not permeable to air prior to volatilization; a color change material disposed between the base layer and the at least one volatile layer, the color change material will change color when exposed to air, and the at least one volatile layer, together with the base layer, isolates the color change material from air; and a top layer composed of an air impermeable material and which, together with the bottom layer, isolates the at least one volatile layer and the color change material from air.

Description

Time-delay color-changing composite layer structure
Technical Field
The invention relates to the field of materials, in particular to a time-delay color-changing composite layer structure.
Background
Currently, structures such as stickers have very wide application in various industries and fields. Labels may be used to indicate information such as the name, weight, date of manufacture, use, price, etc. of an item (e.g., a commodity on sale). Current stickers are generally static and the displayed information remains unchanged. There are also some devices that use electronic display devices or complex mechanical structures to indicate the passage of time, but such devices or structures are often complex.
Disclosure of Invention
The invention provides a composite layer structure, comprising a bottom layer; at least one volatilization layer, wherein each volatilization layer of the at least one volatilization layer is formed of a volatilizable material that will gradually volatilize after contact with air, but is not permeable to air prior to volatilization; a color change material disposed between the base layer and the at least one volatile layer, the color change material will change color when exposed to air, and the at least one volatile layer, together with the base layer, isolates the color change material from air; and a top layer composed of an air impermeable material and which, together with the bottom layer, isolates the at least one volatile layer and the color change material from air.
The invention also provides a structure with an indicating function, which comprises at least two composite layer structures described above, wherein the length of time required for the volatilization layer of each composite layer structure in the at least two composite layer structures to completely volatilize is specifically set.
The embodiment of the invention utilizes the paint which changes color after contacting with air, does not need complex electrical elements or complex mechanical structures, can indicate the elapsed time, and has simpler structure and very convenient use.
Drawings
In the following drawings of the present invention, like features are denoted by like reference numerals, and in some drawings, like drawings denote like structures or materials.
FIG. 1 is a schematic view of a composite layer structure according to one embodiment of the present invention.
FIG. 2 is a schematic view of a composite layer structure according to another embodiment of the invention.
FIG. 3 is a schematic representation of the change over time of the volatile layer and color change material regions in the composite layer structure of FIG. 2.
FIG. 4 is a schematic view of a composite layer structure according to another embodiment of the invention.
Fig. 5 is a schematic top view of a structure having an indicating function according to an embodiment of the present invention.
Fig. 6A to 6F are schematic side or sectional views of a composite layer structure constituting the structure having an indicating function in fig. 5.
Detailed Description
The content of the invention will now be described with reference to a number of exemplary embodiments. It is to be understood that these examples are set forth merely to enable those of ordinary skill in the art to better understand and thereby implement the teachings of the present invention, and are not intended to suggest any limitation as to the scope of the invention.
As used herein, the term "include" and its variants should be read as open-ended terms meaning "including, but not limited to. The term "based on" should be read as "based, at least in part, on. The terms "one embodiment" and "an embodiment" should be read as "at least one embodiment". The term "another embodiment" should be read as "at least one other embodiment".
Fig. 1 shows a composite layer structure according to one embodiment of the invention, comprising a surface layer 1, a volatile layer 2, a colour change coating 4 and a primer layer 5. In embodiments of the invention, the number of volatilization layers can be one or more layers. In embodiments of the invention, the volatilization layer is formed of a volatizable material that will gradually volatilize (e.g., sublimate from a solid to a gas) upon contact with air, preferably the volatizable material is impermeable to air prior to volatilization. In embodiments of the invention, the volatilization layer can be formed of any suitable material that can meet the above "volatilization" requirements. In embodiments of the present invention, the number of the base layer and the surface layer may be one or more layers, respectively. In embodiments of the invention, the base layer and the top layer may each be formed from a gas impermeable material. In an embodiment of the invention, the bottom layer together with the top layer shields the volatile layer and the color change material from air. In embodiments of the invention, the base layer and the skin layer may be formed from a material selected from the group consisting of: polyethylene (PE), polyvinyl chloride (PVC), polyvinylidene chloride (PVDC), etc., although other materials may be selected as desired by those skilled in the art. In embodiments of the invention, a color changing coating is disposed between the base layer and the volatile layer, which will change color upon contact with air. In an embodiment of the invention, the volatilization layer, together with the bottom layer, isolates the color-changing material from air. In the embodiment of the present invention, the color-changing coating may comprise any material as long as the material can play a role of changing color, and examples thereof include, but are not limited to, ferrous sulfate, which changes from green to yellow brown upon contact with air; sodium peroxide, changing from light yellow to white upon exposure to air. Through the color development of different colors, the user can visually observe the information required to be expressed by the composite layer structure. In an embodiment of the invention, the color-changing material is provided as a coating on the surface of the base layer facing the volatilization layer. In an embodiment of the invention, the color-changing material is filled in recesses provided on the surface of the bottom layer facing the volatilization layer. In an embodiment of the invention, the color change material is located in specific areas of the color change layer between the base layer and the volatile layer. In an embodiment of the invention, the color change material is located between adjacent volatilization layers. However, without being limited to the above examples, the structure and arrangement position of the color-changing material may be selected as desired by those skilled in the art. In an embodiment of the invention, the composite layer structure further comprises a barrier material 3, which is arranged between the bottom layer and the volatilization layer, may be formed of a material that is impermeable to air, and surrounds the color-changing material to separate the color-changing material from air together with the bottom layer and the volatilization layer that has not yet volatilized. In an embodiment of the present invention, the color-changing material forms a color-changing layer together with the barrier material so that desired display information can be formed as needed. In embodiments of the invention, the barrier material is the same as the material forming the skin and/or base layers. In embodiments of the invention, the various layers in the composite layered structure are laminated together by methods known in the art, such as electrostatic adsorption, bonding, and the like. In embodiments of the invention, the composite layer structure may include other structures or additional layers. In embodiments of the invention, the composite layer structure is affixed to the surface of the article by electrostatic attraction, adhesives, or the like, for example, the bottom surface of the bottom layer has an adhesive. In the embodiment of the present invention, a composite layer structure is used as a label, which has the same meaning as a label, a protective film, or the like.
In embodiments of the present invention, the time required for complete volatilization of the volatilization layer upon exposure to air can be set by adjusting one or more of the material, thickness, number, etc. of the volatilization layer, thereby providing sufficient flexibility in time control. In the embodiment of the present invention, the time required for each volatilization layer of the plurality of volatilization layers to completely volatilize after contacting with air is preset, and preferably, the time required for each volatilization layer is the same (such an embodiment is simpler).
Fig. 2 shows a composite layer structure according to another embodiment of the invention, in which a different arrangement than in fig. 1 is used for the skin layers and the colour change material. In an embodiment of the present invention, the color-changing material is arranged as or displays symbols, letters and/or figures having specific indication meanings to be able to provide intuitive display information as required. In an embodiment of the invention, the color change material is arranged to comprise a plurality of mutually spaced color change material areas. Referring to fig. 2, there are 6 areas of color change material that, upon exposure to air, display the symbols "1", "2", "3", "4", "5" and "VOID", indicating in sequence that the shelf life has elapsed for 1 day, 2 days, 3 days, 4 days, 5 days and that the shelf life has expired. FIG. 3 shows a schematic representation of the volatile layers and color change material areas in the composite layer structure of FIG. 2 over time, wherein all volatile layers were completely volatilized at day 6 and all color change areas were in contact with air. In embodiments of the present invention, the volatilization layer can comprise two or more layers, and the area and positioning of each volatilization layer is arranged such that the number of volatilization layers above each color change material region of the plurality of spaced color change material regions is different from one another, e.g., the number of volatilization layers above each color change material region is gradually increased (as shown in fig. 2 and 3). Through the arrangement, a user can quantitatively know the change interval, and in the field of food preservation, an operator and a consumer can conveniently know the quality guarantee period; in the field of public health, it is possible to let a cleaner or a worker know how often cleaning is required.
FIG. 4 shows a schematic view of a composite layer structure according to yet another embodiment of the present invention in which each of a plurality of spaced color change material regions is filled with a volatizable material between the underlying layer and the color change material region. In embodiments of the present invention, the filled volatizable material forms a plurality of volatizable layers in conjunction with the color change material regions. In embodiments of the present invention, the thickness of the volatizable material filled between each color change material region and the underlying layer is different. Through above-mentioned setting, the color-changing material can drop along with the volatile layer that has volatilized together, reduces the interference to the user, provides extra convenience.
In an embodiment of the invention, the composite structure may be constructed from at least two composite layer structures. In an embodiment of the present invention, the composite structure may be a structure having an indicating function. In embodiments of the invention, each of the composite layer structures that make up the composite structure has the same or different arrangement. Fig. 5 shows a schematic top view of a structure with an indicating function according to one embodiment of the invention, wherein the color change material of each composite layer structure is arranged to display a symbol, a letter and/or a figure after contact with air, for example, which corresponds to the length of time required for the volatilization layers of the composite layer structure to completely volatilize. Such an arrangement comprising at least two composite layer structures can provide the required flexibility. Fig. 6A to 6F show schematic side or sectional views of a composite layer structure constituting the structure having an indicating function in fig. 5.
In an embodiment of the present invention, an exemplary method of using the above-described composite layer structure or structure having an indicating function is as follows: attaching the composite layer structure to an article requiring time indication, for example in the form of a protective film to a public keyboard, for indicating the time of use of the protective film for periodic replacement thereof; removing the surface layer so that the air comes into contact with the underlying volatilization layer (e.g., 3 layers), wherein the air does not come into contact with the underlying volatilization layer or the color-changing paint before the overlying volatilization layer is completely volatilized, and each volatilization layer can be set to require, for example, 1 hour, 10 hours, or 1 day to be completely volatilized; after all the volatile layers are completely volatilized, the air is contacted with the color-changing coating, and the coating is changed into a second color from a first color; the color change indication of the coating reaches a predetermined time to alert the user to replace the protective film with a new one. In embodiments of the present invention, the composite layer structure or the structure having the indicating function may also be used for other purposes.
It will be appreciated by persons skilled in the art that the foregoing description is only exemplary of the invention and is not intended to limit the invention. The present invention may include various modifications and variations. Any modifications and variations within the spirit and scope of the present invention should be included within the scope of the present invention.

Claims (20)

1. A composite layer structure comprising:
a bottom layer;
at least one volatilization layer, wherein each volatilization layer of the at least one volatilization layer is formed of a volatilizable material that will gradually volatilize after contact with air, but is not permeable to air prior to volatilization;
a color change material disposed between the base layer and the at least one volatile layer, the color change material will change color when exposed to air, and the at least one volatile layer, together with the base layer, isolates the color change material from air; and
a cover layer comprised of a gas impermeable material and which, together with the base layer, isolates the at least one volatile layer and the color change material from air.
2. The composite layer structure of claim 1, wherein the time required for each volatilization layer of the at least one volatilization layer to completely volatilize upon contact with air is predetermined.
3. The composite layer structure of claim 1, wherein the time required for each volatilization layer of the at least one volatilization layer to completely volatilize upon contact with air is the same as each other.
4. The composite layer structure of claim 1, wherein the color change material is disposed as a coating on a surface of the base layer facing the at least one volatile layer.
5. The composite layer structure according to claim 1, wherein a surface of the bottom layer facing the at least one volatilization layer is provided with a depression, and the color change material is filled in the depression.
6. The composite layer structure of claim 1, wherein the color change material is located in specific areas of the color change layer between the base layer and the at least one volatile layer.
7. The composite layer structure of claim 1, wherein the at least one volatilization layer comprises two or more volatilization layers, the color change material being located between adjacent volatilization layers.
8. The composite layer structure of claim 1, wherein the color change material is arranged as a symbol, text and/or image with a specific indicated meaning.
9. The composite layer structure of claim 1, used as a label.
10. The composite layer structure of claim 1, wherein the color change material is arranged to comprise a plurality of spaced-apart color change material regions.
11. The composite layer structure of claim 10, wherein the at least one volatilization layer comprises two or more volatilization layers; and is
Wherein the area and positioning of each of the at least one volatilization layer are arranged such that the number of layers of volatilization layers above each of the plurality of spaced color change material regions are different from each other.
12. The composite layer structure of claim 11, wherein the number of volatized layers above each of the plurality of spaced color change material regions increases gradually.
13. The composite layer structure of claim 12, wherein each of the plurality of spaced color shifting material regions contains an indicator corresponding to a time required for all of the volatizing layers thereabove to be volatilized.
14. The composite layer structure of claim 12, wherein each of the plurality of spaced color changing material regions is filled with a volatizable material that will gradually volatize upon contact with air, but is not permeable to air prior to volatizing, between the underlying layer and each of the plurality of spaced color changing material regions.
15. The composite layer structure of claim 14, wherein each of the plurality of spaced color shifting material regions is not the same thickness as the volatizable material filled between the underlying layer and the color shifting material region.
16. The composite layer structure of claim 1, further comprising a barrier material, wherein the barrier material is disposed between the bottom layer and the at least one volatile layer and is disposed around the color change material; and is
Wherein the barrier material is comprised of a material that is gas impermeable.
17. A structure having an indicating function, comprising:
the composite layer structure of claim 1, wherein the length of time required for the volatilization layer of each of the at least two composite layer structures to completely volatilize has a specific setting.
18. The structure with indication function of claim 17, wherein the specific setting is from short to long in sequence.
19. The structure with indicating function of claim 18, wherein the setting of the sequential short to long time periods is achieved by controlling the number of volatile layers in each of the at least two composite layer structures or the total thickness of the respective volatile layers in each composite layer structure.
20. The structure with an indicator function of claim 19, wherein the color change material of each of the at least two composite structures is arranged as a symbol, letter and/or image corresponding to a length of time required for the volatilization layer of the composite structure to completely volatilize.
CN202010886136.2A 2020-08-28 2020-08-28 Time-delay color-changing composite layer structure Pending CN114103333A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010886136.2A CN114103333A (en) 2020-08-28 2020-08-28 Time-delay color-changing composite layer structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010886136.2A CN114103333A (en) 2020-08-28 2020-08-28 Time-delay color-changing composite layer structure

Publications (1)

Publication Number Publication Date
CN114103333A true CN114103333A (en) 2022-03-01

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Family Applications (1)

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Country Status (1)

Country Link
CN (1) CN114103333A (en)

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