The Process Flow for Wood Grain Transfer Printing on Window and Door Profiles
Release date:
2025-09-01
Wood-grain transfer profiles are created by applying a wood-grain pattern from transfer paper or film onto pre-sprayed or electrophoretically coated profiles. Utilizing the principle of high-temperature sublimation and thermal penetration, the process involves heating and pressurizing to rapidly transfer and deeply embed the wood纹 design into the surface of the already treated profile. This results in wood-grain profiles with crisp, three-dimensional textures that vividly capture the natural essence of wood—making them the ideal, eco-friendly, and energy-saving alternative to traditional timber materials.
Wood grain has excellent adhesion to aluminum, is non-toxic, odorless, and easy to clean. The product features clear, lifelike patterns with strong three-dimensional effects, delivering outstanding aesthetic appeal that evokes a natural, earthy charm—bringing you back to the simplicity and beauty of nature. Additionally, the coating applied to the surface of the sprayed aluminum profiles remains stable in the air, neither volatilizing nor oxidizing, ensuring zero environmental pollution. And any dirt or grime deposited on the coated surface can be effortlessly restored to its original luster and pristine appearance with just a simple cleaning process.
Below is a detailed introduction to the wood-grain transfer printing process.
Process 1: Suitable for large-area or irregularly shaped substrates
Step 1: Select the substrate that has already been spray-coated or electrophoretically treated.
Step 2: Wrap the substrate to be transferred with wood-grain heat-transfer paper, and secure the edges of the paper using high-temperature-resistant tape to prevent the wood-grain heat-transfer paper from coming loose. (Note: The printed side of the wood-grain heat-transfer paper must face the surface of the substrate being transferred.)
Step 3: Next, place a high-temperature-resistant, highly sealable tubular plastic bag over the substrate already wrapped with wood-grain heat-transfer paper. Then, evacuate the air from both ends of the plastic bag until it adheres tightly and effectively to the substrate.
The magnitude of the vacuum's negative pressure should be adjusted appropriately based on factors such as the characteristics of the substrate being transferred and the maximum negative pressure the plastic film bag can withstand—typically ranging between 0.3 and 0.8 MPa. (Note: The purpose of using the plastic film bag is to leverage the negative pressure, ensuring that once the bag is already tightly adhered to the substrate, it also forces the wood-grain heat transfer paper to make full and effective contact with the surface.)
Step 4: Transfer the already wrapped substrate into the oven for baking. The baking temperature and duration should be adjusted appropriately based on factors such as the characteristics of the substrate being transferred, the desired depth of the texture to be printed, and the specific performance of the oven. Typically, the transfer temperature ranges from 160°C to 180°C, with a baking time of 5 to 8 minutes.
Step 5: Remove the transferred substrate from the oven, peel off the plastic bag from one end of the transferred substrate (note: this plastic bag can be reused for future use), carefully tear off the heat-transfer paper, and then clean the surface. 
Process 2: Suitable for flat substrates
Step 1: Select the substrate that has already been spray-coated or electrophoretically treated.
Step 2: Place the wood-grain heat transfer paper face up directly against the front side of the substrate to be transferred.
Step 3: Apply pressure and heat using a flatbed heat transfer machine—typically, the transfer temperature is set between 160°C and 180°C, with a duration of 18 to 25 seconds.
Step 4: Peel off the thermal transfer paper and use the PET thermal transfer film for transferring.
Technique 3: Suitable for Irregularly Shaped Substrates
Step 1: Select the substrate that has already been spray-coated or electrophoretically treated.
Step 2: Wrap the substrate to be transferred with the PET heat-transfer film, then use an ultrasonic sealing machine to seal the PET film into a tubular bag. (Note: The printed side of the PET heat-transfer film must face the surface of the substrate intended for transfer.)
Step 3: Create a vacuum from both ends of the tubular PET heat-transfer film bag until the PET film adheres tightly and effectively to the substrate. The degree of vacuum (negative pressure) should be adjusted appropriately based on factors such as the characteristics of the substrate being transferred and the maximum negative pressure the PET heat-transfer film can withstand—typically ranging between 0.3 and 0.8 MPa.
Step 4: Transfer the already wrapped substrate into the oven for baking. The baking temperature and duration should be adjusted appropriately based on factors such as the characteristics of the substrate being transferred, the desired depth of the texture to be printed, and the specific performance of the oven. Typically, the transfer temperature is set between 160°C and 180°C, with a baking time of 5 to 8 minutes.
Step 5: Remove the substrate that has already been transferred from the oven, and carefully peel off the PET heat-transfer film—either by hand or using a mechanical blowing method (i.e., inflating the tubular PET heat-transfer film bag with air until it bursts).
Now that the editor has explained all this to you, you’ve probably gained quite a bit of insight into wood-grain transfer printing, too.
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Warren Doors and Windows, south of Fangshan Road and west of Dongtai Road, Dongcheng Subdistrict, Linqu County, Weifang City, Shandong Province
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