Environment-friendly self-degradable heat sublimation transfer paper

Abstract

The utility model discloses environment-friendly self-degradation heat sublimation transfer paper which comprises a PLA (polylactic acid) plastic substrate, a heat sublimation dye adsorption cellulose layer, a dye moisture absorption layer, an organic silicon molecule curing film release layer, a PLA plastic film and cellulase microcapsules, and the heat sublimation dye adsorption cellulose layer is coated on the upper surface of the PLA plastic substrate. The dye sublimation dye adsorption cellulose layer is covered with a dye moisture absorption layer, and the lower surface of the PLA plastic substrate is covered with an organic silicon molecule curing film release layer. Through the mode, the environment-friendly self-degradation heat sublimation transfer paper provided by the utility model is provided with the mesh through holes for injecting sodium carboxymethyl cellulose to realize the same drying performance of raw paper, and aiming at the problem that discarded PLA is difficult to decompose at normal temperature, the cellulase microcapsules are compounded on the PLA plastic substrate through the PLA plastic film, so that the environment-friendly self-degradation heat sublimation transfer paper is obtained. Therefore, the degradation difficulty is effectively reduced, and the environmental protection performance is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of heat transfer paper, especially relates to an environment-friendly self-degradation heat transfer paper. BACKGROUND

[0002] About 40% of the industrial wood in the world is used for papermaking industry, and 2-13 tons of water are consumed to produce 1 ton of paper, and the water consumption of the papermaking industry in the world is about 400 billion tons per year. Traditional papermaking needs high energy consumption processes such as cooking and bleaching, and the energy consumption to produce 1 ton of paper is about 5,000-7,000 megajoules (equivalent to burning 160 kilograms of standard coal). About 26% of the garbage in the world is paper products, of which 30% is not recycled.

[0003] The main raw material of the heat transfer paper is the base paper. Heat transfer printing is applied to the textile industry, and a large amount of waste paper is generated after printing. Because these waste papers contain a large amount of chemical pollutants, they are usually incinerated. Although the waste gas generated by incineration can be effectively treated, it causes great energy waste.

[0004] Traditional polylactic acid (PLA) is a biobased plastic that can be degraded, but its degradation depends on high temperature (50-60℃) and high humidity industrial composting conditions, and it degrades slowly in the natural environment (it takes months or even years).

[0005] The base paper not only plays a supporting role for heat transfer dyes, but also absorbs and dries the water in the dyes. Ordinary plastic sheets cannot be directly used to replace base paper and still cause great environmental pollution. SUMMARY

[0006] The utility model mainly solves the technical problem that an environment-friendly self-degradation heat transfer paper is provided, which uses a PLA polylactic acid plastic sheet to replace the base paper to support the cellulose layer of the heat transfer dye, and a mesh through hole is opened to inject sodium carboxymethyl cellulose to realize the same drying performance of the base paper.

[0007] To solve the above technical problems, one technical scheme of the utility model is: provide a kind of environmental protection self-degradation thermal sublimation transfer paper, including PLA polylactic acid plastic base sheet, thermal sublimation dye adsorption cellulose layer, dye moisture absorption layer, organic silicon molecule solidification film release layer, PLA polylactic acid plastic film, cellulase microcapsule, the upper surface of the PLA polylactic acid plastic base sheet is coated with thermal sublimation dye adsorption cellulose layer, the thermal sublimation dye adsorption cellulose layer is covered with dye moisture absorption layer, the lower surface of the PLA polylactic acid plastic base sheet is covered with a layer of organic silicon molecule solidification film release layer, a layer of PLA polylactic acid plastic film is attached to the organic silicon molecule solidification film release layer, and cellulase microcapsule is embedded in the PLA polylactic acid plastic film.

[0008] In a preferred embodiment of the utility model, the cellulase microcapsule is composed of pH-responsive microcapsule and cellulase embedding, and the pH-responsive microcapsule is effective under the compost environment pH of 6.5-8.5.

[0009] In a preferred embodiment of the utility model, a plurality of mesh through holes are formed in the PLA polylactic acid plastic base sheet.

[0010] In a preferred embodiment of the utility model, the thickness of the PLA polylactic acid plastic base sheet is greater than the thickness of the PLA polylactic acid plastic film.

[0011] In a preferred embodiment of the utility model, the PLA polylactic acid plastic base sheet is replaced by raw paper.

[0012] In a preferred embodiment of the utility model, the edges of the PLA polylactic acid plastic base sheet and the PLA polylactic acid plastic film are packaged with sealing latex.

[0013] The utility model has the advantages that the environmental protection self-degradation thermal sublimation transfer paper provided by the utility model uses PLA polylactic acid plastic base sheet to replace raw paper to realize the bearing of thermal sublimation dye adsorption cellulose layer, and mesh through holes are formed to inject sodium carboxymethyl cellulose to realize the same drying performance of raw paper, and the cellulase microcapsule is compounded on the PLA polylactic acid plastic base sheet through the PLA polylactic acid plastic film to effectively reduce the degradation difficulty and improve the environmental protection performance. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed in the embodiment description will be briefly introduced as follows, and obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating creative labor, wherein:

[0015] Figure 1 This is a structural diagram of a preferred embodiment of an environmentally friendly, self-degradable thermal sublimation transfer paper according to this utility model. Detailed Implementation

[0016] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0017] like Figure 1 As shown, the embodiments of this utility model include:

[0018] An environmentally friendly, self-degradable sublimation transfer paper includes a PLA (polylactic acid) plastic substrate 1, a sublimation dye-adsorbed cellulose layer 2, a dye moisture absorption layer 3, an organosilicon molecular curing film release layer 4, a PLA plastic film 5, and cellulase microcapsules 6. The upper surface of the PLA plastic substrate 1 is coated with the sublimation dye-adsorbed cellulose layer 2, and the dye moisture absorption layer 3 covers the sublimation dye-adsorbed cellulose layer 2. The lower surface of the PLA plastic substrate 1 is covered with an organosilicon molecular curing film release layer 4, and a PLA plastic film 5 is attached to the organosilicon molecular curing film release layer 4. Cellulase microcapsules 6 are embedded within the PLA plastic film 5.

[0019] The cellulase microcapsule 6 is composed of a pH-responsive microcapsule and a cellulase encapsulation, and the pH-responsive microcapsule is effective at a composting environment pH of 6.5 to 8.5.

[0020] Furthermore, the PLA polylactic acid plastic substrate 1 has several mesh through holes 7.

[0021] Furthermore, the thickness of the PLA polylactic acid plastic substrate 1 is greater than the thickness of the PLA polylactic acid plastic film 5.

[0022] Furthermore, the PLA polylactic acid plastic substrate 1 is replaced with paper.

[0023] Furthermore, the edges of the PLA polylactic acid plastic substrate 1 and the PLA polylactic acid plastic film 5 are sealed with sealing latex.

[0024] The product uses degradable PLA plastic substrate 1 to replace the traditional thermal sublimation transfer paper base paper, so that the use of paper can be completely abandoned, and the environmental protection purpose is realized. If the global paper use is reduced by 10%, about 150 million trees can be preserved per year (calculated as 17 trees per ton of paper). The production of 1 ton of paper consumes 2-13 tons of water, and the global paper industry uses about 400 billion tons of water per year. The elimination of base paper can greatly reduce industrial water consumption. About 26% of the global waste is paper products, of which 30% is not recycled. The elimination of base paper can reduce landfill / incineration, reduce methane and dioxin emissions.

[0025] On this basis, the PLA plastic substrate 1 is designed with a mesh through hole 7, which can be filled with sodium carboxymethyl cellulose as a thermal sublimation dye water absorption material, thereby replacing the base paper and achieving rapid absorption and drying of dye water.

[0026] In addition, the bottom surface of the PLA plastic substrate 1 is covered with a silicone molecule curing film release layer 4, so that the PLA plastic film 5 can be compounded on the PLA plastic substrate 1. In order to enable the PLA plastic film 5 to be quickly degraded at room temperature, cellulase microcapsules 6 are embedded on the surface of the PLA plastic film 5, which can accelerate the degradation. Thus, the product can be degraded at room temperature.

[0027] At the same time, the sealing latex can better protect the cellulase and prevent premature loss of enzyme activity.

[0028] When the product is implemented for thermal sublimation transfer, the edge-sealed sealing latex is torn off, and the PLA plastic film 5 is torn off from the back of the PLA plastic substrate 1. The operation is similar to opening a book, and the PLA plastic film 5 is turned over to be away from the heat source. Usually, it is temporarily placed beside the dyed fabric after being unfolded, and then the PLA plastic substrate 1 is covered on the dyed fabric, and the thermal sublimation printing and dyeing is implemented in a high temperature environment.

[0029] After the completion of the thermal sublimation transfer, the product becomes waste, at which time the PLA plastic film 5 with cellulase microcapsules 6 is reattached to the PLA plastic substrate 1, and then discarded into the garbage can. Under natural composting conditions, the enzymatic reaction of cellulase microcapsules 6 accelerates the degradation, which can promote the natural decomposition of PLA.

[0030] When PLA polylactic acid plastic film 5 enters the compost environment (humidity > 60%, temperature > 45℃): the shell of the microcapsule (such as polyelectrolyte complex) is dissolved under the action of heat and humidity, and cellulase is released. The enzyme attacks the ester bond in the PLA molecular chain and decomposes it into lactic acid monomers (oligomers). Lactic acid is further metabolized by microorganisms in the compost into CO2 and H2O (2-4 weeks are required to complete mineralization).

[0031] The hydrophobicity of PLA hinders the adhesion of microorganisms, but cellulase pretreatment can increase the surface roughness and promote the colonization of microorganisms. In this way, the generated small molecule lactic acid reduces the local pH and activates other hydrolytic enzymes (such as protease, lipase) in the compost, forming a cascade degradation effect. The degradation rate of the PLA polylactic acid plastic substrate 1, the heat sublimation dye adsorbing cellulose layer 2 is also synchronized.

[0032] The shell of the microcapsule (such as polyelectrolyte complex) is dissolved under the action of heat and humidity, and cellulase is released.

[0033] Cellulase activation time: about 72 hours (designed to delay release to avoid premature inactivation).

[0034] In summary, the present application provides an environmentally friendly self-degradable heat sublimation transfer paper, which uses a PLA polylactic acid plastic substrate 1 to replace the original paper to realize the bearing of the heat sublimation dye adsorbing cellulose layer 2, and a mesh through hole 7 is opened to inject sodium carboxymethyl cellulose to realize the same drying performance of the original paper. And aiming at the problem of difficult decomposition of PLA at room temperature, cellulase microcapsules 6 are compounded on the PLA polylactic acid plastic substrate 1 through the PLA polylactic acid plastic film 5, thereby effectively reducing the degradation difficulty and improving the environmental protection performance.

[0035] The above is only an embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation using the content of the present application specification, or direct or indirect application in other related technical fields, are also included in the patent protection range of the present application.

Claims

1. An environmentally friendly self-degradable heat transfer paper, characterized in that, The application relates to a PLA polylactic acid plastic base sheet, a thermal sublimation dye adsorption cellulose layer, a dye moisture absorption layer, a silicone molecule solidification film release layer, a PLA polylactic acid plastic film and cellulase microcapsules, wherein the upper surface of the PLA polylactic acid plastic base sheet is coated with the thermal sublimation dye adsorption cellulose layer, the thermal sublimation dye adsorption cellulose layer is covered with the dye moisture absorption layer, the lower surface of the PLA polylactic acid plastic base sheet is covered with the silicone molecule solidification film release layer, the silicone molecule solidification film release layer is attached with the PLA polylactic acid plastic film, and the PLA polylactic acid plastic film is inlaid with the cellulase microcapsules.

2. The eco-friendly self-degradable thermal sublimation transfer paper according to claim 1, characterized in that, The cellulase microcapsules are composed of pH-responsive microcapsules and cellulase embedding, and the pH-responsive microcapsules are effective under the pH of a compost environment of 6.5-8.

5.

3. The eco-friendly self-degradable sublimation transfer paper according to claim 1, characterized in that, A plurality of mesh through holes are arranged on the PLA polylactic acid plastic base sheet.

4. The eco-friendly self-degradable sublimation transfer paper according to claim 1, characterized in that, The thickness of the PLA polylactic acid plastic base sheet is greater than that of the PLA polylactic acid plastic film.

5. The eco-friendly self-degradable sublimation transfer paper according to claim 1, characterized in that, The PLA polylactic acid plastic base sheet is replaced by raw paper.

6. The eco-friendly self-degradable sublimation transfer paper according to claim 1, characterized in that, The edges of the PLA polylactic acid plastic base sheet and the PLA polylactic acid plastic film are sealed with sealing latex.

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