A method for making silicone offset heat transfer

Abstract

The invention provides a silicone offset heat transfer production method, comprising the following steps: step 1) electrostatic treatment of a PET back surface, step 2) sub-bottom treatment of a PET front surface, step 3) surface treatment of the sub-bottom, step 4) coating an environmentally friendly weather-resistant silicone layer on the surface of the sub-bottom, step 5) coating an ink-absorbing layer on the surface of the environmentally friendly weather-resistant silicone layer, step 6) cutting into sheets, step 7) color printing of graphics, step 8) screen printing of a bridging agent on the color-printed graphics, step 9) screen printing of a hot-melt adhesive film, step 10) coating the hot-melt adhesive film with hot-melt adhesive at a coating temperature of 145° C. to 155° C.; step 11) laser cutting positioning holes to ensure positioning during subsequent laser marking; step 12) laser marking, marking according to different shapes of products; and step 13) waste discharge, wherein waste materials other than the graphics are discharged, and the remaining materials are the required graphics.

Description

Technical Field

[0001] The invention relates to the technical field of logo or decoration production, and is mainly used for heat transfer products, and is mainly used for producing trademarks or labels on clothing, bags, shoes, hats, handbags, etc., in particular to a silicone offset heat transfer production method. Background Art

[0002] The existing technology is PU material offset heat transfer, after washing, the surface has the problems of sticking to each other, sublimation, surface cracking, discoloration and glue edges. Summary of the Invention

[0003] In view of this, the main purpose of the present invention is to provide a method for producing silicone offset heat transfer.

[0004] The technical solution adopted is:

[0005] A method for producing silicone offset heat transfer, comprising the following steps:

[0006] Step 1) Antistatic treatment on the back of PET: Apply an antistatic layer on the back of PET using a baking coater. The coating thickness is 0.90um to 1.1um. The baking speed is 30m to 50m per minute and the coating baking temperature is 115℃ to 125℃.

[0007] Step 2) PET front surface matte treatment: Use a baking coater to apply a matte layer on the front of the PET to form a matte layer. The coating thickness is 0.95um to 1.1um. The baking coating speed is 30m to 50m per minute and the coating baking temperature is 95℃ to 105℃.

[0008] Step 3) Sub-substrate surface treatment: After step 2), a wax layer is applied on the sub-substrate using a baking coater. The coating thickness is 0.95um to 1.05um. The baking parameters are coating speed of 35m to 45m per minute and coating baking temperature of 115℃ to 125℃.

[0009] Step 4) Apply environmentally friendly weather silicone layer on the sub-bottom surface: After step 3), perform constant temperature treatment at 155℃~165℃ for 3~5 minutes, and then use a baking coater to apply a layer of environmentally friendly weather silicone layer on the sub-bottom surface with molten wax. The coating thickness is 1.95um~2.05um. The baking parameters are coating speed of 5m~15m per minute and coating baking temperature of 155℃~165℃.

[0010] Step 5) Coating an ink-absorbing layer on the surface of the environmentally friendly weather silicone layer: A baking coating machine is used to apply an ink-absorbing layer on the environmentally friendly weather silicone layer after step 4), with a coating thickness of 0.95um to 1.1um, a coating speed of 35m to 50m per minute, and a coating baking temperature of 95°C to 105°C;

[0011] Step 6) Cutting into sheets: After step 5), the coated roll is cut into sheets according to different products and specifications to facilitate color printing;

[0012] Step 7) Color printing: After step 6), a dedicated 6+1 Heidelberg machine is used to color print the set graphics on the surface of the environmentally friendly weather silicone layer through the ink-absorbing layer;

[0013] Step 8) Screen printing bridging agent on the color-printed image: After step 7), screen printing bridging agent on the color-printed image to ensure that the color-printed ink can penetrate the ink-absorbing layer and make the color-printed ink firmly bonded to the silicone. Then use a coating baking machine to bake at 115℃~125℃ for 20 minutes;

[0014] Step 9) Screen printing hot melt adhesive film, the specific steps are as follows:

[0015] ① Silk-screen printing of environmentally friendly white silicone: After step 8), silk-screen printing of environmentally friendly white silicone on the color-printed image 1-2 times, and bake in a coating baker at 115-125°C for 20 minutes;

[0016] ② Screen printing bridging agent: After the treatment in step 9), the bridging agent is printed to form a hot melt adhesive film;

[0017] Step 10) Laminating the hot melt adhesive film with hot melt adhesive at a laminating temperature of 145°C to 155°C;

[0018] Step 11) Laser cut positioning holes to ensure positioning during subsequent laser marking;

[0019] Step 12) Laser marking, marking according to the different shapes of the products;

[0020] Step 13) Discard the waste materials other than the graphics and texts, and the remaining ones are the graphics and texts you need.

[0021] Furthermore, the antistatic layer is obtained by coating an environmentally friendly electrostatic agent on the back of the PET using a baking coater, and the environmentally friendly electrostatic agent includes the following components in mass percentage: 80-90% methyl vinyl and 10-20% electrostatic agent.

[0022] Furthermore, the sub-solder is obtained by coating the front side of the PET with an environmentally friendly Teflon agent using a baking coating machine, and the environmentally friendly Teflon agent includes the following components in percentage by mass: 75-85% Teflon, 10-20% matte powder, and 5% curing agent.

[0023] Furthermore, the wax layer is obtained by coating edible wax on the sub-base using a baking coating machine.

[0024] Furthermore, the environmentally friendly weather silicone layer is obtained by coating the sub-bottom surface with molten wax with environmentally friendly weather silicone using a baking coater, and the environmentally friendly weather silicone includes the following components in the following mass percentages: weather methyl vinyl 99.6%, food-grade platinum curing agent 0.2%, and delay agent 0.2%.

[0025] Furthermore, the ink-absorbing layer is obtained by coating the environmentally friendly weather silicone layer with ink-absorbing resin using a baking coater, and the ink-absorbing resin includes the following components in percentage by mass: 99.3% environmentally friendly TPU resin and 0.7% curing agent.

[0026] Furthermore, the bridging agent includes the following components in percentage by mass: 96.6% of methyl vinyl, 0.2% of food-grade platinum curing agent, 0.2% of delay agent, and 3% of coupling agent.

[0027] Furthermore, the environmentally friendly white silica gel includes the following components in percentage by mass: 84.6% of methyl vinyl, 15% of titanium dioxide, 0.2% of food-grade platinum curing agent, 0.2% of delay agent, and 3% of coupling agent.

[0028] Furthermore, the hot melt adhesive is made of TPU material.

[0029] The beneficial effects of the present invention are:

[0030] Apply environmentally friendly electrostatic treatment agent on the back of PET to ensure that no static electricity is generated during coating or color printing, thus ensuring printing quality;

[0031] The surface of the sub-base is coated with edible wax, and the product is hot pressed to ensure that the pattern can be released onto the product;

[0032] The surface of the sub-bottom is coated with environmentally friendly weather silicone to ensure that the surface pattern is wear-resistant and does not fade.

[0033] The surface of weather silicone is coated with an ink-absorbing layer to ensure good color printing and good color fastness. The ink-absorbing layer ensures that the silicone surface can be printed with UV ink and ensures good bonding fastness between UV ink and silicone.

[0034] Use a dedicated 6+1 Heidelberg printing machine for color printing to ensure high clarity of patterns and bright colors;

[0035] The environmentally friendly bridging agent is screen-printed on the color-printed graphics to ensure the bonding strength between the color-printed ink and the silicone. The environmentally friendly white silicone is screen-printed on the bridging agent. The white color sets off the color of the color printing and has the effect of preventing sublimation. The bridging agent printed on the surface of the environmentally friendly silicone ensures good bonding strength between the silicone and the hot-melt adhesive film, and is washable and does not delaminate. DETAILED DESCRIPTION

[0036] The present invention will be described in detail below with reference to specific embodiments. The exemplary embodiments and descriptions of the present invention are used to explain the present invention but are not intended to limit the present invention.

[0037] The following terms are explained in the present invention: PET is polyethylene terephthalate plastic.

[0038] Bridging agent is a commonly used curing agent.

[0039] Example 1

[0040] A method for producing silicone offset heat transfer, comprising the following steps:

[0041] Step 1) Antistatic treatment on the back of PET: Apply an antistatic layer on the back of PET using a baking coater. The coating thickness is 0.90um. The baking speed is 30m / min and the coating baking temperature is 115℃.

[0042] Step 2) PET front surface matte treatment: A matte layer is applied on the front of the PET using a baking coater to form a matte layer. The coating thickness is 0.95um. The baking speed is 30mm per minute and the coating baking temperature is 95°C.

[0043] Step 3) Sub-substrate surface treatment: After step 2), a wax layer is applied on the sub-substrate using a baking coater. The coating thickness is 0.95 μm. The baking parameters are coating speed of 35 m / min and coating baking temperature of 115°C.

[0044] Step 4) Apply environmentally friendly weather-resistant silicone layer to the sub-bottom surface: After step 3), perform constant temperature treatment at 155°C for 3 minutes, and then use a baking coater to apply a layer of environmentally friendly weather-resistant silicone layer on the sub-bottom surface with molten wax. The coating thickness is 1.95um. The baking parameters are coating speed of 5m per minute and coating baking temperature of 155°C.

[0045] Step 5) Coating an ink-absorbing layer on the surface of the environmentally friendly weather silicone layer: A baking coating machine is used to apply an ink-absorbing layer on the environmentally friendly weather silicone layer after step 4), with a coating thickness of 0.95 μm, a coating speed of 35 m / min, and a coating baking temperature of 95°C;

[0046] Step 6) Cutting into sheets: After step 5), the coated roll is cut into sheets according to different products and specifications to facilitate color printing;

[0047] Step 7) Color printing: After step 6), a dedicated 6+1 Heidelberg machine is used to color print the set graphics on the surface of the environmentally friendly weather silicone layer through the ink-absorbing layer;

[0048] Step 8) Screen printing bridging agent on the color-printed image: After step 7), screen printing bridging agent on the color-printed image to ensure that the color-printed ink can penetrate the ink-absorbing layer so that the color-printed ink and the silicone are firmly bonded. The coating is then baked at 115°C for 20 minutes using a coating baking machine.

[0049] Step 9) Screen printing hot melt adhesive film, the specific steps are as follows:

[0050] ① Silk-screen printing of environmentally friendly white silicone: After step 8), silk-screen printing of environmentally friendly white silicone on the color-printed image 1-2 times, and bake in a coating baker at 115°C for 20 minutes;

[0051] ② Screen printing bridging agent: After the treatment in step 9), the bridging agent is printed to form a hot melt adhesive film;

[0052] Step 10) Laminating the hot melt adhesive film with hot melt adhesive at a laminating temperature of 145°C;

[0053] Step 11) Laser cut positioning holes to ensure positioning during subsequent laser marking;

[0054] Step 12) Laser marking, marking according to the different shapes of the products;

[0055] Step 13) Discard the waste materials other than the graphics and texts, and the remaining ones are the graphics and texts you need.

[0056] Example 2

[0057] A method for producing silicone offset heat transfer, comprising the following steps:

[0058] Step 1) Antistatic treatment on the back of PET: Apply an antistatic layer on the back of PET using a baking coater. The coating thickness is 1.1um. The baking speed is 50m / min and the coating baking temperature is 125℃.

[0059] Step 2) PET front surface matte treatment: A matte layer is applied on the front of the PET using a baking coater to form a matte layer. The coating thickness is 1.1um. The baking speed is 50m / min and the coating baking temperature is 105°C.

[0060] Step 3) Sub-substrate surface treatment: After step 2), a wax layer is applied on the sub-substrate using a baking coater. The coating thickness is 1.05 μm. The baking parameters are coating speed of 45 m / min and coating baking temperature of 125°C.

[0061] Step 4) Apply environmentally friendly weather silicone layer on the sub-bottom surface: After step 3), perform constant temperature treatment at 165°C for 5 minutes, and then use a baking coater to apply a layer of environmentally friendly weather silicone layer on the sub-bottom surface with molten wax. The coating thickness is 2.05um. The baking parameters are coating speed of 15m per minute and coating baking temperature of 165°C.

[0062] Step 5) Coating an ink-absorbing layer on the surface of the environmentally friendly weather silicone layer: A baking coating machine is used to apply an ink-absorbing layer on the environmentally friendly weather silicone layer after step 4), with a coating thickness of 1.1 μm, a coating speed of 50 m / min, and a coating baking temperature of 105°C;

[0063] Step 6) Cutting into sheets: After step 5), the coated roll is cut into sheets according to different products and specifications to facilitate color printing;

[0064] Step 7) Color printing: After step 6), a dedicated 6+1 Heidelberg machine is used to color print the set graphics on the surface of the environmentally friendly weather silicone layer through the ink-absorbing layer;

[0065] Step 8) Screen printing bridging agent on the color-printed image: After step 7), screen printing bridging agent on the color-printed image to ensure that the color-printed ink can penetrate the ink-absorbing layer so that the color-printed ink and the silicone are firmly bonded. The coating is then baked at 125°C for 20 minutes using a coating baking machine.

[0066] Step 9) Screen printing hot melt adhesive film, the specific steps are as follows:

[0067] ① Silk-screen printing of environmentally friendly white silicone: After step 8), silk-screen printing of environmentally friendly white silicone on the color-printed image 1-2 times, and bake in a coating baker at 125°C for 20 minutes;

[0068] ② Screen printing bridging agent: After the treatment in step 9), the bridging agent is printed to form a hot melt adhesive film;

[0069] Step 10) Laminating the hot melt adhesive film with hot melt adhesive at a laminating temperature of 155°C;

[0070] Step 11) Laser cut positioning holes to ensure positioning during subsequent laser marking;

[0071] Step 12) Laser marking, marking according to the different shapes of the products;

[0072] Step 13) Discard the waste materials other than the graphics and texts, and the remaining ones are the graphics and texts you need.

[0073] Example 3

[0074] A method for producing silicone offset heat transfer, comprising the following steps:

[0075] Step 1) Antistatic treatment on the back of PET: Apply an antistatic layer on the back of PET using a baking coater. The coating thickness is 0.95um. The baking speed is 35m / min and the coating baking temperature is 120℃.

[0076] Step 2) PET front surface matte treatment: Use a baking coater to apply a matte layer on the front of the PET to form a matte layer. The coating thickness is 1.0 μm. The baking coating speed is 35 m / min and the coating baking temperature is 100°C.

[0077] Step 3) Sub-substrate surface treatment: After step 2), a wax layer is applied on the sub-substrate using a baking coater. The coating thickness is 1.0 μm. The baking parameters are coating speed of 40 m / min and coating baking temperature of 120°C.

[0078] Step 4) Apply environmentally friendly weather-resistant silicone layer on the sub-bottom surface: After step 3), perform constant temperature treatment at 160°C for 4 minutes, and then use a baking coater to apply a layer of environmentally friendly weather-resistant silicone layer on the sub-bottom surface with molten wax. The coating thickness is 2.0 μm. The baking parameters are coating speed of 10 m / min and coating baking temperature of 160°C.

[0079] Step 5) Coating an ink-absorbing layer on the surface of the environmentally friendly weather silicone layer: A baking coating machine is used to apply an ink-absorbing layer on the environmentally friendly weather silicone layer after step 4), with a coating thickness of 1.0 μm, a coating speed of 40 m / min, and a coating baking temperature of 100°C;

[0080] Step 6) Cutting into sheets: After step 5), the coated roll is cut into sheets according to different products and specifications to facilitate color printing;

[0081] Step 7) Color printing: After step 6), a dedicated 6+1 Heidelberg machine is used to color print the set graphics on the surface of the environmentally friendly weather silicone layer through the ink-absorbing layer;

[0082] Step 8) Screen printing bridging agent on the color-printed image: After step 7), screen printing bridging agent on the color-printed image to ensure that the color-printed ink can penetrate the ink-absorbing layer so that the color-printed ink and the silicone are firmly bonded. The coating is then baked at 120°C for 20 minutes using a coating baking machine.

[0083] Step 9) Screen printing hot melt adhesive film, the specific steps are as follows:

[0084] ① Silk-screen printing of environmentally friendly white silicone: After step 8), silk-screen printing of environmentally friendly white silicone on the color-printed image 1-2 times, and bake in a coating baking machine at 120°C for 20 minutes;

[0085] ② Screen printing bridging agent: After the treatment in step 9), the bridging agent is printed to form a hot melt adhesive film;

[0086] Step 10) Laminating the hot melt adhesive film with hot melt adhesive at a laminating temperature of 150°C;

[0087] Step 11) Laser cut positioning holes to ensure positioning during subsequent laser marking;

[0088] Step 12) Laser marking, marking according to the different shapes of the products;

[0089] Step 13) Discard the waste materials other than the graphics and texts, and the remaining ones are the graphics and texts you need.

[0090] Example 4

[0091] A method for producing silicone offset heat transfer, comprising the following steps:

[0092] Step 1) Antistatic treatment on the back of PET: Apply an antistatic layer on the back of PET using a baking coater. The coating thickness is 1.0um. The baking speed is 40m / min and the coating baking temperature is 120℃.

[0093] Step 2) PET front surface matte treatment: A matte layer is applied on the front of the PET using a baking coater to form a matte layer. The coating thickness is 1.05um. The baking speed is 40m / min and the coating baking temperature is 100°C.

[0094] Step 3) Sub-substrate surface treatment: After step 2), a wax layer is applied on the sub-substrate using a baking coater. The coating thickness is 1.0 μm. The baking parameters are coating speed of 40 m / min and coating baking temperature of 120°C.

[0095] Step 4) Apply environmentally friendly weather-resistant silicone layer on the sub-bottom surface: After step 3), perform constant temperature treatment at 160°C for 4 minutes, and then use a baking coater to apply a layer of environmentally friendly weather-resistant silicone layer on the sub-bottom surface with molten wax. The coating thickness is 2.0 μm. The baking parameters are coating speed of 10 m / min and coating baking temperature of 160°C.

[0096] Step 5) Coating an ink-absorbing layer on the surface of the environmentally friendly weather silicone layer: A baking coating machine is used to apply an ink-absorbing layer on the environmentally friendly weather silicone layer after step 4), with a coating thickness of 1.05 μm, a coating speed of 45 m / min, and a coating baking temperature of 100°C;

[0097] Step 6) Cutting into sheets: After step 5), the coated roll is cut into sheets according to different products and specifications to facilitate color printing;

[0098] Step 7) Color printing: After step 6), a dedicated 6+1 Heidelberg machine is used to color print the set graphics on the surface of the environmentally friendly weather silicone layer through the ink-absorbing layer;

[0099] Step 8) Screen printing bridging agent on the color-printed image: After step 7), screen printing bridging agent on the color-printed image to ensure that the color-printed ink can penetrate the ink-absorbing layer so that the color-printed ink and the silicone are firmly bonded. The coating is then baked at 120°C for 20 minutes using a coating baking machine.

[0100] Step 9) Screen printing hot melt adhesive film, the specific steps are as follows:

[0101] ① Silk-screen printing of environmentally friendly white silicone: After step 8), silk-screen printing of environmentally friendly white silicone on the color-printed image 1-2 times, and bake in a coating baking machine at 120°C for 20 minutes;

[0102] ② Screen printing bridging agent: After the treatment in step 9), the bridging agent is printed to form a hot melt adhesive film;

[0103] Step 10) Laminating the hot melt adhesive film with hot melt adhesive at a laminating temperature of 150°C;

[0104] Step 11) Laser cut positioning holes to ensure positioning during subsequent laser marking;

[0105] Step 12) Laser marking, marking according to the different shapes of the products;

[0106] Step 13) Discard the waste materials other than the graphics and texts, and the remaining ones are the graphics and texts you need.

[0107] Example 5

[0108] A method for producing silicone offset heat transfer, comprising the following steps:

[0109] Step 1) Antistatic treatment on the back of PET: Apply an antistatic layer on the back of PET using a baking coater. The coating thickness is 1.0um. The baking speed is 40m / min and the coating baking temperature is 120℃.

[0110] Step 2) PET front surface matte treatment: A matte layer is applied on the front of the PET using a baking coater to form a matte layer. The coating thickness is 1.05um. The baking speed is 40m / min and the coating baking temperature is 100°C.

[0111] Step 3) Sub-substrate surface treatment: After step 2), a wax layer is applied on the sub-substrate using a baking coater. The coating thickness is 1.0 μm. The baking parameters are coating speed of 40 m / min and coating baking temperature of 120°C.

[0112] Step 4) Apply environmentally friendly weather-resistant silicone layer on the sub-bottom surface: After step 3), perform constant temperature treatment at 160°C for 4 minutes, and then use a baking coater to apply a layer of environmentally friendly weather-resistant silicone layer on the sub-bottom surface with molten wax. The coating thickness is 2.0 μm. The baking parameters are coating speed of 10 m / min and coating baking temperature of 160°C.

[0113] Step 5) Coating an ink-absorbing layer on the surface of the environmentally friendly weather silicone layer: A baking coating machine is used to apply an ink-absorbing layer on the environmentally friendly weather silicone layer after step 4), with a coating thickness of 1.05 μm, a coating speed of 45 m / min, and a coating baking temperature of 100°C;

[0114] Step 6) Cutting into sheets: After step 5), the coated roll is cut into sheets according to different products and specifications to facilitate color printing;

[0115] Step 7) Color printing: After step 6), a dedicated 6+1 Heidelberg machine is used to color print the set graphics on the surface of the environmentally friendly weather silicone layer through the ink-absorbing layer;

[0116] Step 8) Screen printing bridging agent on the color-printed image: After step 7), screen printing bridging agent on the color-printed image to ensure that the color-printed ink can penetrate the ink-absorbing layer so that the color-printed ink and the silicone are firmly bonded. The coating is then baked at 120°C for 20 minutes using a coating baking machine.

[0117] Step 9) Screen printing hot melt adhesive film, the specific steps are as follows:

[0118] ① Silk-screen printing of environmentally friendly white silicone: After step 8), silk-screen printing of environmentally friendly white silicone on the color-printed image 1-2 times, and bake in a coating baking machine at 120°C for 20 minutes;

[0119] ② Screen printing bridging agent: After the treatment in step 9), the bridging agent is printed to form a hot melt adhesive film;

[0120] Step 10) Laminating the hot melt adhesive film with hot melt adhesive at a laminating temperature of 150°C;

[0121] Step 11) Laser cut positioning holes to ensure positioning during subsequent laser marking;

[0122] Step 12) Laser marking, marking according to the different shapes of the products;

[0123] Step 13) Discard the waste materials other than the graphics and texts, and the remaining ones are the graphics and texts you need.

[0124] The antistatic layer is obtained by coating the back of the PET with an environmentally friendly electrostatic agent using a baking coating machine. The environmentally friendly electrostatic agent includes the following components in percentage by weight: 90% methyl vinyl and 10% electrostatic agent.

[0125] The sub-solder is obtained by coating the front side of PET with an environmentally friendly Teflon agent using a baking coating machine. The environmentally friendly Teflon agent includes the following components in percentage by mass: 80% Teflon, 15% matte powder, and 5% curing agent.

[0126] The wax layer is obtained by coating edible wax on the sub-base using a baking coating machine.

[0127] The environmentally friendly weather silicone layer is obtained by coating the environmentally friendly weather silicone on the sub-bottom surface with molten wax using a baking coating machine. The environmentally friendly weather silicone includes the following components in percentage by mass: 99.6% weather methyl vinyl, 0.2% food-grade platinum curing agent, and 0.2% delay agent.

[0128] The ink-absorbing layer is obtained by coating an ink-absorbing resin on an environmentally friendly weather-resistant silicone layer using a baking coater. The ink-absorbing resin includes the following components in percentage by mass: 99.3% environmentally friendly TPU resin and 0.7% curing agent.

[0129] The bridging agent includes the following components in percentage by mass: 96.6% of methyl vinyl, 0.2% of food-grade platinum curing agent, 0.2% of delay agent, and 3% of coupling agent.

[0130] The environmentally friendly white silica gel includes the following components in percentage by mass: 84.6% of methyl vinyl, 15% of titanium dioxide, 0.2% of food-grade platinum curing agent, 0.2% of delay agent, and 3% of coupling agent.

[0131] The present invention applies an environmentally friendly electrostatic treatment agent on the back of the PET to ensure that no static electricity is generated during coating or color printing, thereby ensuring printing quality;

[0132] The surface of the sub-base is coated with edible wax, and the product is hot pressed to ensure that the pattern can be released onto the product;

[0133] The surface of the sub-bottom is coated with environmentally friendly weather silicone to ensure that the surface pattern is wear-resistant and does not fade.

[0134] The surface of weather silicone is coated with an ink-absorbing layer to ensure good color printing and good color fastness. The ink-absorbing layer ensures that the silicone surface can be printed with UV ink and ensures good bonding fastness between UV ink and silicone.

[0135] Use a dedicated 6+1 Heidelberg printing machine for color printing to ensure high clarity of patterns and bright colors;

[0136] The environmentally friendly bridging agent is screen-printed on the color-printed graphics to ensure the bonding strength between the color-printed ink and the silicone. The environmentally friendly white silicone is screen-printed on the bridging agent. The white color sets off the color of the color printing and has the effect of preventing sublimation. The bridging agent printed on the surface of the environmentally friendly silicone ensures good bonding strength between the silicone and the hot-melt adhesive film, and is washable and does not delaminate.

[0137] The technical solutions disclosed in the embodiments of the present invention are introduced in detail above. Specific embodiments are used herein to illustrate the principles and implementation methods of the embodiments of the present invention. The description of the above embodiments is only applicable to help understand the principles of the embodiments of the present invention. At the same time, for those skilled in the art, according to the embodiments of the present invention, there may be changes in the specific implementation methods and application scopes. In summary, the contents of this specification should not be understood as limiting the present invention.

Claims

1. A method for producing silicone offset heat transfer, characterized in that: The steps include: Step 1) Antistatic treatment on the back of PET: Apply an antistatic layer on the back of PET using a baking coater. The coating thickness is 0.90um to 1.1um. The baking speed is 30m to 50m per minute and the coating baking temperature is 115℃ to 125℃. Step 2) PET front surface matte treatment: Use a baking coater to apply a matte layer on the front of the PET to form a matte layer. The coating thickness is 0.95um to 1.1um. The baking coating speed is 30m to 50m per minute and the coating baking temperature is 95℃ to 105℃. Step 3) Sub-substrate surface treatment: After step 2), a wax layer is applied on the sub-substrate using a baking coater. The coating thickness is 0.95um to 1.05um. The baking parameters are coating speed of 35m to 45m per minute and coating baking temperature of 115℃ to 125℃. Step 4) Apply environmentally friendly weather silicone layer on the sub-bottom surface: After step 3), perform constant temperature treatment at 155℃~165℃ for 3~5 minutes, and then use a baking coater to apply a layer of environmentally friendly weather silicone layer on the sub-bottom surface with molten wax. The coating thickness is 1.95um~2.05um. The baking parameters are coating speed of 5m~15m per minute and coating baking temperature of 155℃~165℃. Step 5) Coating an ink-absorbing layer on the surface of the environmentally friendly weather silicone layer: A baking coating machine is used to apply an ink-absorbing layer on the environmentally friendly weather silicone layer after step 4), with a coating thickness of 0.95um to 1.1um, a coating speed of 35m to 50m per minute, and a coating baking temperature of 95°C to 105°C; Step 6) Cutting into sheets: After step 5), the coated roll is cut into sheets according to different products and specifications to facilitate color printing; Step 7) Color printing: After step 6), a dedicated 6+1 Heidelberg machine is used to color print the set graphics on the surface of the environmentally friendly weather silicone layer through the ink-absorbing layer; Step 8) Screen printing bridging agent on the color-printed image: After step 7), screen printing bridging agent on the color-printed image to ensure that the color-printed ink can penetrate the ink-absorbing layer and make the color-printed ink firmly bonded to the silicone. Then use a coating baking machine to bake at 115℃~125℃ for 20 minutes; Step 9) Screen printing hot melt adhesive film, the specific steps are as follows: ① Silk-screen printing of environmentally friendly white silicone: After step 8), silk-screen printing of environmentally friendly white silicone on the color-printed image 1-2 times, and bake in a coating baker at 115-125°C for 20 minutes; ② Screen printing bridging agent: After the treatment in step 9), the bridging agent is printed to form a hot melt adhesive film; Step 10) Laminating the hot melt adhesive film with hot melt adhesive at a laminating temperature of 145°C to 155°C; Step 11) Laser cut positioning holes to ensure positioning during subsequent laser marking; Step 12) Laser marking, marking according to the different shapes of the products; Step 13) Discard the waste materials except for the graphics and texts, and the remaining materials are the graphics and texts you need; In step 3), the wax layer is obtained by coating the sub-substrate with edible wax using a baking coating machine; In step 4), the environmentally friendly weather silicone layer is obtained by coating the sub-bottom surface with molten wax with environmentally friendly weather silicone using a baking coating machine, and the environmentally friendly weather silicone comprises the following components in percentage by weight: weather methyl vinyl 99.6%, food grade platinum curing agent 0.2%, and delay agent 0.2%; In step 5), the ink-absorbing layer is obtained by coating the environmentally friendly weather-resistant silicone layer with ink-absorbing resin using a baking coater. The ink-absorbing resin includes the following components in percentage by mass: 99.3% environmentally friendly TPU resin and 0.7% curing agent.

2. The method for producing silicone offset heat transfer according to claim 1, characterized in that: In step 1), the antistatic layer is obtained by coating the back of the PET with an environmentally friendly electrostatic agent using a baking coater. The environmentally friendly electrostatic agent includes the following components in mass percentage: 80-90% methyl vinyl and 10-20% electrostatic agent.

3. The method for producing silicone offset heat transfer according to claim 1, characterized in that: In step 2), the sub-solder is obtained by coating the front side of the PET with an environmentally friendly Teflon agent using a baking coater. The environmentally friendly Teflon agent includes the following components in percentage by mass: 75-85% Teflon, 10-20% matte powder, and 5% curing agent.

4. The method for producing silicone offset heat transfer according to claim 1, characterized in that: In step 8), the bridging agent includes the following components in percentage by mass: 96.6% methyl vinyl, 0.2% food-grade platinum curing agent, 0.2% delay agent, and 3% coupling agent.

5. The method for producing silicone offset heat transfer according to claim 1, characterized in that: In step 9), the environmentally friendly white silica gel includes the following components in percentage by mass: 84.6% methyl vinyl, 15% titanium dioxide, 0.2% food-grade platinum curing agent, 0.2% delay agent, and 3% coupling agent.

6. The method for producing silicone offset heat transfer according to claim 1, characterized in that: In step 9), the hot melt adhesive is made of TPU material.