A long-lasting, organic silicone scented decal

Abstract

The utility model discloses a kind of organic silicone glue iron picture of persistent fragrance, which includes transparent medium carrier layer, glue layer, adhesion layer, middle layer fragrance silicone layer and surface layer controllable release fragrance silicone layer from bottom to top.The core of the utility model is to solve the compatibility problem of fragrance and resin by using special fragrance organic silicone glue compound, and through the double-layer design of "middle layer storage fragrance+surface layer controlled release", especially the nano microporous structure of surface layer, the slow, persistent and intelligent triggered release of fragrance are realized.The utility model effectively overcomes the defects of short fragrance time, affecting product quality and single function of traditional fragrance iron picture, while giving the iron picture persistent fragrance function, completely retains the original excellent performance of organic silicone glue material.

Description

Technical Field

[0001] This utility model relates to the field of heat transfer materials technology, specifically to an organic silicone heat transfer print with a long-lasting fragrance function for textile printing. Background Technology

[0002] Heat transfer printing (also known as heat transfer printing) is a mature process that uses heat and pressure to transfer a pattern layer from a carrier film onto the surface of a substrate (such as textiles). Silicone heat transfer printing, due to its excellent elasticity, washability, soft feel, environmental friendliness, non-toxicity, and resistance to high and low temperatures, has become the preferred decorative solution in the high-end clothing and sportswear industry.

[0003] With market development, consumers are no longer satisfied with a single visual experience and are demanding greater product functionality (such as tactile and olfactory experiences). Among these demands, imbuing heat transfer printing with olfactory functionality has emerged as a new research and development direction. Currently, some technologies have attempted to introduce fragrance into textiles, such as printing microcapsule fragrances onto fabrics or directly mixing fragrances into inks. However, these traditional methods face the following insurmountable technical bottlenecks when applied to silicone heat transfer printing:

[0004] 1. Insufficient durability: Fragrance substances (especially essential oils) are volatile and are largely lost during the high-temperature pressing process of heat transfer printing. Even if a small amount of fragrance is successfully transferred, its fragrance retention time is very short, and it will completely disappear after a few wears or 1-2 washes. It cannot achieve a long-lasting fragrance function that matches the lifespan of the heat transfer itself (which can usually withstand dozens of washes).

[0005] 2. Compatibility and stability issues: Most fragrances are organic solvents or oily substances, which have poor compatibility with silicone resin systems. Direct mixing will seriously interfere with the curing and cross-linking reaction of silicone resin, leading to quality problems such as reduced adhesion of heat transfer printing, weakened elasticity, sticky surface, or blurred patterns, significantly reducing the product qualification rate.

[0006] 3. Limited functionality: Most existing technologies only achieve a simple "fragrant" function. The fragrance release is uncontrollable and is usually released quickly in the initial stage. It cannot achieve intelligent and controllable release methods such as fragrance release triggered by friction and slow and continuous release, resulting in a limited user experience. Utility Model Content

[0007] In view of the above-mentioned defects in the prior art, the present invention aims to provide a long-lasting fragrance transfer printing made of silicone. The present invention mainly solves the problems of fragrance retention during high-temperature processing, the compatibility problem between fragrance and silicone resin, and achieves controllable and long-lasting fragrance release, while ensuring that the original high elasticity, strong adhesion and soft feel of the transfer printing are not damaged.

[0008] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: a long-lasting fragrance-emitting silicone heat transfer print, comprising, from bottom to top, the following:

[0009] A transparent medium carrier layer;

[0010] An adhesive layer printed on the transparent medium carrier layer;

[0011] An adhesive layer printed on the adhesive layer;

[0012] A middle layer of scented silicone printed on the adhesive layer, which is composed of a base silicone, a scented silicone compound and additives;

[0013] A surface layer of controllable release fragrance silicone printed on the middle layer of fragrance silicone is made by mixing transparent silicone, fragrance silicone composite, additives and diluents and then baking and curing it. The surface layer is designed with a nanoscale microporous structure.

[0014] Furthermore, the transparent medium carrier layer is a single-sided matte transparent PET film with a thickness of 75-125μm.

[0015] Furthermore, the thickness of the adhesive layer is 0.10-0.15 mm.

[0016] Furthermore, in the middle fragrance silicone layer, the amount of the fragrance silicone compound added is 10-20 wt%, the amount of the additives added is 5-10 wt%, and the remainder is basic silicone; the thickness of the middle fragrance silicone layer is 0.07-0.12 mm.

[0017] Furthermore, in the surface layer of controllable fragrance-releasing silicone, the amount of the fragrance-releasing silicone compound added is 10-20 wt%, the amount of the additive added is 5-10 wt%, the amount of the diluent added is 0-10 wt%, and the remainder is transparent silicone; the thickness of the surface layer of controllable fragrance-releasing silicone is 0.07-0.12 mm.

[0018] Furthermore, the fragrance-enhanced silicone compound is a compatible compound prepared by pre-emulsification, inclusion, or grafting of fragrance oils and silicone resins.

[0019] Furthermore, the fragrance-enhanced silicone compound is a compatible compound prepared by pre-emulsification, inclusion, or grafting of fragrance oils and silicone resins.

[0020] Furthermore, the diluent is silicone oil.

[0021] Furthermore, the nanoscale micropores on the surface controllable fragrance-releasing silicone layer have a pore size between 50 and 200 nanometers.

[0022] Furthermore, the nanoscale microporous structure is formed by screen printing with a corresponding microporous pattern.

[0023] Compared with the prior art, the present invention has the following significant advantages:

[0024] 1. Excellent fragrance longevity: By designing a dual-layer fragrance carrier structure of "middle fragrance layer + surface controlled-release layer", the middle layer serves as the main fragrance reservoir, while the surface layer provides the initial fragrance and acts as a protective barrier, effectively slowing down the overall evaporation rate of the fragrance. At the same time, the nanoporous structure of the surface layer enables slow and controlled release of the fragrance, extending the fragrance duration from the traditional several days to 1-6 months, and it can withstand multiple washes.

[0025] 2. Excellent compatibility and stability: A specially formulated "fragrant silicone compound" is used instead of directly adding fragrance. This compound has inherent good compatibility with the silicone resin system and will not hinder or interfere with the resin's curing and cross-linking reaction. This ensures that the final heat transfer product has strong adhesion, good elasticity, a smooth surface, clear patterns, and no delamination, stickiness, or other "poisoning" phenomena, resulting in a high product qualification rate.

[0026] 3. Intelligent and multifunctional release: The nanoporous structure on the surface constitutes a controllable release system. When the ambient temperature rises slightly (such as high-temperature irradiation or frictional heat to 30-40℃), the evaporation rate of the fragrance substances in the micropores accelerates, thereby realizing the "heat-triggered" intelligent fragrance dispersal function and enriching the user experience.

[0027] 4. Maintain original performance: While adding fragrance function, this utility model fully retains all the excellent physical properties inherent in silicone heat transfer printing, such as high elasticity, water resistance, soft feel, environmental protection and non-toxicity. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of this utility model;

[0029] In the diagram: 1. Transparent medium carrier layer; 2. Adhesive layer; 3. Adhesive layer; 4. Middle layer fragrance silicone layer; 5. Top layer controllable fragrance release silicone layer; 50. Nanoporous structure. Detailed Implementation

[0030] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0031] like Figure 1 As shown, this embodiment provides a long-lasting fragrance silicone heat transfer print, which includes, from bottom to top, a transparent medium carrier layer 1, an adhesive layer 2, an adhesive layer 3, a middle fragrance silicone layer 4, and a surface controllable fragrance release silicone layer 5. The surface controllable fragrance release silicone layer 5 can control the fragrance release of the middle fragrance silicone layer 4, and at the same time can protect the middle fragrance silicone layer 4.

[0032] In summary, the production process of this long-lasting, fragrant silicone heat transfer print is as follows:

[0033] Step 1, Prepare materials and substrate:

[0034] 1) Select a 100μm thick single-sided matte transparent PET film as the transparent medium carrier layer 1, cut it into 39cm x 54cm specifications, clean the surface and set it aside.

[0035] 2) Raw material preparation:

[0036] Basic silicone: Prepare colored silicone A component, transparent silicone B component, and corresponding curing agents for color mixing;

[0037] Fragrance-enhanced silicone compound: prepared in advance;

[0038] Additives: Prepare leveling agents, defoamers, and curing accelerators;

[0039] Adhesive: Prepare a special silicone adhesive;

[0040] Diluent: Low viscosity methyl silicone oil.

[0041] Step 2, Print adhesive layer 2:

[0042] Lay the prepared PET film flat on the table of the precision screen printing machine, ensuring the matte side faces upwards. Select a 150-mesh screen (adjustable as needed) and apply the silicone adhesive to the matte surface of the PET film. Strictly control the printing thickness to 0.12mm.

[0043] Step 3, Print adhesive layer 3:

[0044] Based on step two, 5 wt% of additives are added to the screen printing adhesive layer 3; after printing, it is pre-baked at 70°C for 2 minutes to remove some of the solvent, forming a pre-cured adhesive layer 3, which is responsible for the final adhesion to the substrate to improve adhesion.

[0045] Step 4, Print the middle layer of fragrance silicone:

[0046] 1) Ink preparation: Take 70 parts of white silicone A component by weight percentage, add 15 parts of silicone complex (equivalent to 6% pure fragrance content), add 5 parts of additives including 2 parts of leveling agent, 2 parts of defoamer, and 1 part of catalyst, and finally dilute with 10 parts of methyl silicone oil, stir evenly and degas under vacuum.

[0047] 2) Printing: Replace the 200-mesh screen and print the prepared fragrance silicone ink onto the adhesive layer 3. Control the printing thickness to 0.10mm. This layer is the main reservoir of fragrance, and the high proportion of flavor compounds provides an ample source of aroma.

[0048] This step replaces the original screen printing silicone with organic silicone plus 10-20wt% flavored organic silicone and 10wt% additives, increasing the concentration of the fragrance. At the same time, the fragrance addition method has good compatibility with the organic silicone resin system, does not hinder its curing and adhesive reaction, and does not cause delamination or poisoning. More importantly, it slows down the rapid release of the fragrance, allowing the fragrance to be released in a controlled manner through the intermediate carrier.

[0049] Step 5: Print a controlled-release fragrance silicone layer on the surface.

[0050] 1) Ink preparation: Take 75 parts of transparent silicone B component by weight percentage, add 15 parts of fragrance silicone complex, add 5 parts of auxiliary agents, 2 parts of leveling agent, 2 parts of defoamer, 1 part of catalyst, dilute with 5 parts of methyl silicone oil, and stir evenly.

[0051] 2) Printing and Curing: A specially designed screen printing stencil is used for printing. This stencil is treated with nanomaterials, resulting in a uniform microporous pattern with pores approximately 100 nanometers in diameter. This ink is printed onto the middle layer, with a controlled thickness of 0.08 mm. After printing, the entire heat transfer is placed in an oven and baked continuously at 90°C for 4 hours. This high-temperature curing process not only completely cures and cross-links each layer of silicone but also firmly locks the fragrance complex within the silicone network structure, resulting in a stable surface structure with nanoporous structures after curing. These micropores slowly release fragrance under normal conditions; when human movement, friction, or body heat causes the local temperature of the heat transfer to rise to 30-40°C, the movement of fragrance molecules within the micropores intensifies, significantly increasing the release of fragrance.

[0052] This step involves adding 10-20 wt% fragrance silicone to the original transparent silicone layer, then screen-printing this mixture onto the four sides of the middle fragrance silicone layer. The initial fragrance release occurs through nano-sized pores on the surface screen, stimulated by a temperature of 30-40 degrees Celsius to release the fragrance. This controlled fragrance release extends the fragrance's duration from one month to six months.

[0053] In addition, the above-mentioned fragrance silicone compound is a compatible compound prepared by pre-emulsification, inclusion or grafting of fragrance oil and silicone resin.

[0054] In summary, this invention primarily addresses the challenges of fragrance retention during high-temperature processing, the compatibility of fragrance with silicone resin, and the controllable and long-lasting release of fragrance, while ensuring that the original high elasticity, strong adhesion, and soft feel of the heat transfer print are not compromised. The heat transfer print comprises, from bottom to top, a transparent carrier layer 1, an adhesive layer 2, a bonding layer 3, a middle fragrance silicone layer 4, and a surface controllable fragrance silicone layer 5. The core of this invention lies in using a specially formulated fragrance silicone composite to solve the compatibility problem between fragrance and resin. Through a dual-layer design of "middle layer fragrance storage + surface layer controlled release," particularly the nanoporous structure 50 of the surface layer, a slow, long-lasting, and intelligently triggered release of fragrance is achieved. This invention effectively overcomes the shortcomings of traditional fragrance heat transfer prints, such as short fragrance retention time, impact on product quality, and limited functionality. While providing the heat transfer print with a long-lasting fragrance function, it fully retains the excellent original properties of the silicone material.

[0055] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. A long-lasting, fragrant silicone heat transfer print, characterized in that, include: From bottom to top, they include: A transparent medium carrier layer (1); An adhesive layer (2) printed on the transparent medium carrier layer (1); An adhesive layer (3) printed on the adhesive layer (2); A middle layer of scented silicone (4) printed on the adhesive layer (2); A surface layer of controllable release fragrance silicone layer (5) is printed on the middle fragrance silicone layer (4), the surface layer being designed with a nanoscale microporous structure.

2. The long-lasting fragrance silicone heat transfer print according to claim 1, characterized in that, The transparent medium carrier layer (1) is a single-sided matte transparent PET film with a thickness of 75-125μm.

3. The long-lasting fragrance silicone heat transfer print according to claim 1, characterized in that, The thickness of the adhesive layer (2) is 0.10-0.15 mm.

4. The long-lasting fragrance silicone heat transfer print according to claim 1, characterized in that, The thickness of the middle fragrance silicone layer (4) is 0.07-0.12 mm.

5. The long-lasting fragrance silicone heat transfer print according to claim 1, characterized in that, The thickness of the surface controllable release fragrance silicone layer (5) is 0.07-0.12 mm.

6. The long-lasting fragrance silicone heat transfer print according to claim 1, characterized in that, The nanoscale micropores on the surface controllable fragrance-releasing silicone layer (5) have a pore size between 50 and 200 nanometers.

7. The long-lasting fragrance silicone heat transfer print according to claim 1, characterized in that, The nanoscale microporous structure is formed by screen printing with a corresponding microporous pattern.

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