Regenerated silicone thermal transfer label and manufacturing method

Abstract

The present invention relates to the technical field of research and development of utilization of renewable resources, and specifically to a recycled silicone thermal transfer label and a manufacturing method thereof; the label comprises a base layer, a transition layer, a first bonding layer, a raw silicone layer, a second bonding layer, a recycled silicone layer and a silicone protective layer, and the base layer, the transition layer, the first bonding layer, the raw silicone layer, the second bonding layer, the recycled silicone layer and the silicone protective layer are stacked in sequence from bottom to top; a recycled silicone thermal transfer label is manufactured by adopting recycled silicone material; firstly, the utilization rate of recycled silicone is significantly improved, and the content of recycled silicone powder in the recycled silicone thermal transfer label reaches more than 20%, which complies with the GRS global recycling standard certification; secondly, in terms of usage method, there is no need to make the recycled silicone powder into a glue liquid, but the recycled silicone powder is directly attached to the thermal transfer label and wrapped by the silicone protective layer to protect the recycled silicone powder from falling off.

Description

Technical Field

[0001] The present invention relates to the technical field of renewable resource utilization research and development, and in particular to a recycled silicone thermal transfer label and a manufacturing method thereof. Background Art

[0002] Circular economy is an economic operation model that follows the natural ecological material cycle. This economic development model can not only solve the problem of resource depletion faced by human development, but also improve the quality of the ecological environment. It is a two-pronged approach and has great practical and historical significance in improving the relationship between man and nature, the relationship between economic development and environmental protection, and the relationship between economy and society, and solving the number one problem facing human development in the new millennium (economic growth is subject to increasing resource constraints and environmental pressures).

[0003] Circular economy requires transforming the traditional resource-consuming economic development model into a model that follows the natural ecological material cycle, that is, organizing it into a scientific economic development model of "resources - products - consumption - waste - renewable resources" to achieve sustainable development.

[0004] It can be seen from this that the resource recycling industry is the terminal link of the circular economy and is also the key link that determines whether the circular economy can complete a closed-loop turnover. If the resource recycling industry is not perfected, the waste generated in the production process cannot be fully recycled and effectively utilized, high emissions are inevitable, material production activities become an open linear model, and the circular economy development model cannot be constructed.

[0005] The essence of developing the resource recycling industry is to achieve the goal of "resource reuse" in the circular economy. Therefore, improving the utilization rate of recycled resources is the fundamental way to promote and ensure the survival and development of the resource recycling industry, and thus realize the scientific development model of the circular economy.

[0006] Silicone is a recyclable resource. At present, in the field of thermal transfer technology, there are technical problems that need to be further solved in the utilization rate and use method of recycled silicone. First, the utilization rate is low; second, the use method of recycled silicone is to use the strong acid and strong alkali fission method, the production process is not environmentally friendly and the production cost is high; third, due to the addition of recycled silicone, the texture of the product produced will be slightly inferior to that of the product made from silicone raw materials. Therefore, a major technical problem faced by the field of thermal transfer technology that uses recycled silicone as raw material for product production is "how to overcome the above-mentioned technical problems in the application of recycled silicone in the field of thermal transfer technology." Summary of the Invention

[0007] In order to solve the technical problem of "how to improve the utilization rate of recycled silica gel", the present invention provides a method for making a thermal transfer label using recycled silica gel particles and a technical solution for the thermal transfer label as follows:

[0008] A recycled silicone thermal transfer label comprises a base layer, a transition layer, a first adhesive layer, a raw silicone layer, a second adhesive layer, a recycled silicone layer and a silicone protective layer. The base layer, the transition layer, the first adhesive layer, the raw silicone layer, the second adhesive layer, the recycled silicone layer and the silicone protective layer are stacked in sequence from bottom to top.

[0009] Preferably, the base layer is a PET release film.

[0010] Preferably, the transition layer is a hot melt adhesive layer, and the hot melt adhesive layer includes a waterproof hot melt adhesive layer provided on the base layer and a common hot melt adhesive layer provided on the waterproof hot melt adhesive layer. The common hot melt adhesive layer adopts a silicone model of JN-03.

[0011] Preferably, the first bonding layer and the second bonding layer are platinum coupling agents.

[0012] Preferably, the raw silica gel layer uses a silica gel model of JN-13.

[0013] Preferably, the regenerated silica gel layer accounts for 20%-50% of the total weight.

[0014] Preferably, the silicone model used in the silicone protective layer is JN-1310.

[0015] Preferably, a matte silicone layer is further provided on the silicone protective layer, and the silicone model used in the matte silicone layer is JN-12.

[0016] A method for producing a recycled silicone heat transfer label, comprising using a screen printing machine, a hot stamping machine, a closed vertical oven, and a laser machine, and comprising the following steps:

[0017] Step 1: Prepare PET release film and place it on the screen printer as the base material. Use the screen printer to print the preliminary heat transfer label on the PET release film:

[0018] ① Printing hot melt adhesive, hot melt adhesive includes waterproof hot melt adhesive and ordinary hot melt adhesive, the steps are: first print waterproof hot melt adhesive twice, then print ordinary hot melt adhesive twice after printing waterproof hot melt adhesive;

[0019] ② Printing platinum coupling agent: Print platinum coupling agent 1-2 times on the hot melt adhesive layer using a screen printing machine;

[0020] ③ Printing raw silicone: Use a screen printing machine to print raw silicone 1-2 times on the preliminary thermal transfer mark printed with the platinum coupling agent. The raw silicone uses a silicone model of JN-13.

[0021] ④ Print the platinum coupling agent again, and use a screen printing machine to print the platinum coupling agent 1-2 times on the preliminary thermal transfer label printed with the raw material silicone to make a preliminary thermal transfer label;

[0022] Step 2: Make recycled silica gel powder, recycle silica gel waste, put the silica gel waste into a grinder for crushing, and make recycled silica gel powder;

[0023] Step 3: Add recycled silica gel powder. After printing the platinum coupling agent again in step 1, apply recycled silica gel powder to the platinum coupling agent. Place the recycled silica gel powder in the receiving tank in advance and apply it by reverse printing. During the application of recycled silica gel powder, ensure that the platinum coupling agent is not dry, so that the recycled silica gel powder accounts for 20%-50% of the total weight.

[0024] Step 4: Hot stamping machine: After applying recycled silica gel powder, cover the surface with a layer of release paper, then put it into the hot stamping machine, press it into a certain thickness, then take it out and peel off the release paper after cooling down.

[0025] Step 5: Print the silicone protective layer. Use a screen printing machine to print 1-2 times of silicone protective layer on the surface of the recycled silicone powder. The silicone model used for the silicone protective layer is JN-1310.

[0026] Step 6: Print the matte silicone layer. Use a screen printing machine to print 1-2 times of matte silicone on the silicone protective layer. The silicone model used for the matte silicone layer is JN-12.

[0027] Step 7: Print the logo layer on the silicone protective layer using a silk screen printer;

[0028] Step 8: Drying: Place the preliminary thermal transfer label printed in step 6 into a closed vertical oven, adjust the temperature to 80 degrees, bake for 60 minutes, then take it out and let it cool;

[0029] Step 9: Laser forming: Place the preliminary heat transfer label cooled in step 7 into the laser machine and laser form it into a certain shape according to the requirements to make the finished heat transfer label.

[0030] Preferably, a conveying platform is set up next to the printing machine. After each printing of the screen printing machine is completed, the printed PET release film is placed on the conveying platform and conveyed to the feeding end of the screen printing machine. Then the PET release film is taken out and put into the screen printing machine for the next printing.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] A recycled silicone thermal transfer label is made by adopting recycled silicone material; firstly, the utilization rate of recycled silicone is significantly improved, and the content of recycled silicone powder in the recycled silicone thermal transfer label reaches more than 20%, which meets the GRS global recycling standard certification; secondly, in terms of usage method, there is no need to make the recycled silicone powder into a glue liquid, but the recycled silicone powder is directly attached to the thermal transfer label and wrapped with a silicone protective layer to protect the recycled silicone powder from falling off; thirdly, because the base layer of the thermal transfer label has gorgeous color, distinct layers, rich changes, and realistic three-dimensional texture, the image of the logo layer is more prominent; fourthly, the overall structure of the product surface is still based on silicone raw materials, therefore, all the excellent qualities of silicone raw material products are retained; therefore, the present invention effectively overcomes the technical problems existing in the application of recycled silicone in the field of thermal transfer technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of the present invention.

[0034] Figure 2 It is a flowchart of the present invention. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] See also Figure 1-2 A recycled silicone thermal transfer label includes a base layer 1, a transition layer 2, a first adhesive layer 3, a raw silicone layer 4, a second adhesive layer 5, a recycled silicone layer 6 and a silicone protective layer 7. The base layer 1, the transition layer 2, the first adhesive layer 3, the raw silicone layer 4, the second adhesive layer 5, the recycled silicone layer 6 and the silicone protective layer 7 are stacked in sequence from bottom to top.

[0037] Furthermore, the base layer 1 is a PET release film.

[0038] Furthermore, the transition layer 2 is a hot melt adhesive layer, which includes a waterproof hot melt adhesive layer 21 arranged on the base layer 1 and a common hot melt adhesive layer 22 arranged on the waterproof hot melt adhesive layer 21. The common hot melt adhesive layer 22 uses a silicone model of JN-03.

[0039] Furthermore, the first adhesive layer 3 and the second adhesive layer 5 are platinum coupling agents.

[0040] Furthermore, the raw material silica gel layer 4 uses silica gel model JN-13.

[0041] Furthermore, the regenerated silica gel layer 6 accounts for more than 20% of the total weight, preferably 20%-50%.

[0042] Furthermore, the silicone model used in the silicone protective layer 7 is JN-1310.

[0043] Furthermore, a matte silicone layer 8 is provided on the silicone protective layer 7 , and the silicone model used in the matte silicone layer 8 is JN-12.

[0044] A method for producing a recycled silicone heat transfer label, comprising using a screen printing machine, a hot stamping machine, a closed vertical oven, and a laser machine, and comprising the following steps:

[0045] Step 1: Prepare PET release film and place it on the screen printer as the base material. Use the screen printer to print the preliminary heat transfer label on the PET release film:

[0046] ① Printing hot melt adhesive, which includes waterproof hot melt adhesive and ordinary hot melt adhesive. The steps are as follows: first print the waterproof hot melt adhesive twice, then print the ordinary hot melt adhesive twice after printing the waterproof hot melt adhesive. The ordinary hot melt adhesive model is JN-03 thermal conductive silicone, which is used for mutual adhesion with the following platinum coupling agent;

[0047] ② Printing platinum coupling agent: Use a screen printing machine to print platinum coupling agent 1-2 times on the hot melt adhesive layer; by printing platinum coupling agent, it can achieve bonding with silicone;

[0048] ③ Printing raw silicone: Use a screen printing machine to print raw silicone 1-2 times on the preliminary thermal transfer mark printed with the platinum coupling agent. The raw silicone uses a silicone model of JN-13.

[0049] ④ Print the platinum coupling agent again, and use a screen printing machine to print the platinum coupling agent 1-2 times on the preliminary heat transfer label of the printed raw material silicone to make a preliminary heat transfer label; achieve bonding with the silicone;

[0050] Step 2: Make recycled silica gel powder, recycle silica gel waste, put the silica gel waste into a grinder for crushing, and make recycled silica gel powder;

[0051] Step 3: Add the recycled silica gel powder. After printing the platinum coupling agent again in step 1, apply the recycled silica gel powder to the platinum coupling agent. Place the recycled silica gel powder in the receiving tank in advance and apply the recycled silica gel powder by reverse printing. During the application of the recycled silica gel powder, ensure that the platinum coupling agent is not dry, so that the recycled silica gel powder accounts for more than 20% of the total weight, preferably 20%-50%;

[0052] Step 4: Hot stamping machine: After applying recycled silica gel powder, cover the surface with a layer of release paper, then put it into the hot stamping machine, press it into a certain thickness, then take it out and peel off the release paper after cooling down.

[0053] Step 5: Print the silicone protective layer. Use a screen printing machine to print 1-2 times of silicone protective layer on the surface of the recycled silicone powder. The silicone model used for the silicone protective layer is JN-1310.

[0054] Step 6: Print the matte silicone layer. Use a screen printing machine to print 1-2 times of matte silicone on the silicone protective layer. The silicone model used for the matte silicone layer is JN-12.

[0055] Step 7: Print the logo layer on the silicone protective layer using a silk screen printer;

[0056] Step 8: Drying: Place the preliminary thermal transfer label printed in step 6 into a closed vertical oven, adjust the temperature to 80 degrees, bake for 60 minutes, then take it out and let it cool;

[0057] Step 9: Laser forming: Place the preliminary heat transfer label cooled in step 7 into the laser machine and laser form it into a certain shape according to the requirements to make the finished heat transfer label.

[0058] Furthermore, a conveying platform is set up next to the printing machine. After each printing of the screen printing machine is completed, the printed PET release film is placed on the conveying platform and conveyed to the feeding end of the screen printing machine. Then the PET release film is taken out and put into the screen printing machine for the next printing step. Through the conveying platform, the printed PET release film can be quickly delivered to the front of the screen printing machine for re-printing, preventing the dry glue from affecting the adhesion degree of the next screen printing step.

[0059] In the above technical means, PET release film is used as the base layer, and a screen printing machine is used to print the heat transfer label, wherein a waterproof hot melt adhesive layer is set to play a waterproof role on the bottom of the heat transfer label; ordinary hot melt adhesive is set, which can be combined with a platinum coupling agent to play a transition role; platinum coupling agent is used to combine with silicone to perform layered printing; a raw silicone layer is set to retain the excellent quality of the raw silicone products; a recycled silicone layer is set, and then combined with a silicone protective layer to wrap the powdered recycled silicone layer to prevent the recycled silicone layer from falling off; a matte silicone layer is set to remove the gloss from the surface of the heat transfer label to meet the needs of more customers; according to the needs of the product, a logo layer is set, which is located on the top layer and is used on clothing, shoes and other products as a logo.

[0060] A recycled silicone thermal transfer label is made by adopting recycled silicone material; firstly, the utilization rate of recycled silicone is significantly improved, and the content of recycled silicone powder in the recycled silicone thermal transfer label reaches more than 20%, and it has obtained GRS Global Recycling Standard certification in Lowell, Massachusetts, USA, with certification number D27062-G4-2020-00205100; secondly, in terms of usage method, there is no need to make the recycled silicone powder into a glue liquid, but the recycled silicone powder is directly attached to the thermal transfer label and wrapped with a silicone protective layer 7 to protect the recycled silicone powder from falling off; thirdly, because the base layer of the thermal transfer label has gorgeous color, distinct layers, rich changes, and a realistic three-dimensional texture, the image of the logo layer is more prominent; fourthly, the overall structure of the product surface is still based on silicone raw materials, therefore, all the excellent qualities of silicone raw material products are retained; therefore, the present invention effectively overcomes the technical problems existing in the application of recycled silicone in the field of thermal transfer technology.

[0061] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A recycled silicone thermal transfer label, characterized by: The invention comprises a base layer, a transition layer, a first bonding layer, a raw silicone layer, a second bonding layer, a recycled silicone layer and a silicone protective layer, wherein the base layer, the transition layer, the first bonding layer, the raw silicone layer, the second bonding layer, the recycled silicone layer and the silicone protective layer are stacked in order from bottom to top; the transition layer is a hot melt adhesive layer, and the hot melt adhesive layer comprises a waterproof hot melt adhesive layer provided on the base layer and an ordinary hot melt adhesive layer provided on the waterproof hot melt adhesive layer, and the silicone model used in the ordinary hot melt adhesive layer is JN-03; a matte silicone layer is also provided on the silicone protective layer, and the silicone model used in the matte silicone layer is JN-12; The method for making a recycled silicone thermal transfer label includes the following steps: Step 1: Prepare PET release film and place it on the screen printer as the base material. Use the screen printer to print the preliminary heat transfer label on the PET release film: ① Printing hot melt adhesive, hot melt adhesive includes waterproof hot melt adhesive and ordinary hot melt adhesive, the steps are: first print waterproof hot melt adhesive twice, then print ordinary hot melt adhesive twice after printing waterproof hot melt adhesive; ② Printing platinum coupling agent: Print platinum coupling agent 1-2 times on the hot melt adhesive layer using a screen printing machine; ③ Printing raw silicone: Use a screen printing machine to print raw silicone 1-2 times on the preliminary thermal transfer mark printed with the platinum coupling agent. The raw silicone uses a silicone model of JN-13. ④ Print the platinum coupling agent again, and use a screen printing machine to print the platinum coupling agent 1-2 times on the preliminary thermal transfer label printed with the raw material silicone to make a preliminary thermal transfer label; Step 2: Make recycled silica gel powder, recycle silica gel waste, put the silica gel waste into a grinder for crushing, and make recycled silica gel powder; Step 3: Add recycled silica gel powder. After printing the platinum coupling agent again in step 1, apply recycled silica gel powder to the platinum coupling agent. Place the recycled silica gel powder in the receiving tank in advance and apply it by reverse printing. During the application of recycled silica gel powder, ensure that the platinum coupling agent is not dry, so that the recycled silica gel powder accounts for 20%-50% of the total weight. Step 4: Hot stamping machine: After applying recycled silica gel powder, cover the surface with a layer of release paper, then put it into the hot stamping machine, press it into a certain thickness, then take it out and peel off the release paper after cooling down. Step 5: Print the silicone protective layer. Use a screen printing machine to print 1-2 times of silicone protective layer on the surface of the recycled silicone powder. The silicone model used for the silicone protective layer is JN-1310. Step 6: Print the matte silicone layer. Use a screen printing machine to print matte silicone on the silicone protective layer 1-2 times. The silicone model used for the matte silicone layer is JN-12.

2. The regenerated silicone thermal transfer label according to claim 1, characterized in that: A conveying platform is set up next to the screen printing machine. After each printing of the screen printing machine is completed, the printed PET release film is placed on the conveying platform and transported to the feeding end of the screen printing machine. Then the PET release film is removed and put into the screen printing machine for the next printing.

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