Spray device and method for use thereof

1. A method of applying pretreatment liquid to an area of a fabric shirt, the method comprising:

positioning the fabric shirt on and/or over a substrate;

providing a spray device for spraying the pretreatment liquid on portions of the fabric shirt;

contacting, to the fabric shirt, a first wheel positioned at a first lateral side of the spray device, a second wheel positioned at a second lateral side of the spray device, and a third wheel positioned at a leading end of the spray device;

supporting the spray device on the portions of the fabric shirt using the first wheel, the second wheel, and the third wheel;

activating the spray device;

after activation of the spray device, moving the spray device via rotation of the first wheel, the second wheel, and the third wheel from a first position on the fabric shirt to a second position on the fabric shirt; and

during activation of the spray device from the first position to the second position, spraying the pretreatment liquid onto a spray area formed on the fabric shirt;

wherein the first wheel has a first axis of rotation, the second wheel has a second axis of rotation, and the third wheel has a third axis of rotation; and

wherein, when the first wheel, the second wheel, and the third wheel are contacted to the fabric shirt, a first plane perpendicular to the first axis of rotation passes through the first wheel and the spray area, a second plane perpendicular to the second axis of rotation passes through the second wheel and the spray area, and a third plane perpendicular to the third axis of rotation passes through the third wheel, through the spray area, and is positioned between the first plane and the second plane.

2. The method of claim 1 , further comprising adjusting an application rate of the pretreatment liquid by adjusting height(s) of one or more sprayers attached to the spray device relative to the fabric shirt, a velocity of the spray device during movement thereof from the first position to the second position, and/or a pressure of the pretreatment liquid from a pump to the one or more sprayers.

3. The method of claim 1 , wherein the spray device is activated by continuously depressing a button provided on the spray device to activate a controller that controls the moving of the spray device and to cause the spraying of the pretreatment liquid.

4. The method of claim 1 , wherein the spray device is activated by activating a controller that controls the moving of spray device for a predetermined distance and the spraying of the pretreatment liquid for a predetermined time.

5. The method of claim 4 , wherein at least one of the predetermined distance and the predetermined time can be changed by programming the controller.

6. The method of claim 1 , wherein spraying of the pretreatment is facilitated using one or more sprayers supported by the spray device, and the one or more sprayers are supplied with pretreatment liquid from a reservoir using a pump.

7. The method of claim 6 , further comprising adjusting height(s) of the one or more sprayers relative to the fabric shirt.

8. The method of claim 6 , wherein the reservoir is provided inside or outside of the spray device.

9. The method of claim 6 , wherein the pump is provided inside or outside of the spray device.

10. A method of applying pretreatment liquid to an area of a fabric shirt, the method comprising:

positioning the fabric shirt on and/or over a substrate;

providing a spray device for spraying the pretreatment liquid on portions of the fabric shirt;

contacting, to the fabric shirt, a first wheel positioned at a first lateral side of the spray device, a second wheel positioned at a second lateral side of the spray device, and a third wheel positioned at a leading end of the spray device;

supporting the spray device on the portions of the fabric shirt using the first wheel, the second wheel, and the third wheel;

activating the spray device to supply the pretreatment liquid to one or more sprayers attached to the spray device from a reservoir using a pump, to spray the pretreatment liquid from the one or more sprayers onto a spray area formed on the fabric shirt, and to move, via rotation of the first wheel, the second wheel, and the third wheel, the spray device from a first position to a second position on the fabric shirt as the pretreatment liquid is pumped and sprayed, and

adjusting an application rate of the pretreatment liquid by adjusting height(s) of the one or more sprayers attached to the spray device relative to the fabric shirt, adjusting a velocity of the spray device during movement thereof from the first position to the second position, and/or adjusting a pressure of the pretreatment liquid from the pump to the one or more sprayers;

wherein the first wheel has a first axis of rotation, the second wheel has a second axis of rotation, and the third wheel has a third axis of rotation; and

wherein, when the first wheel, the second wheel, and the third wheel are contacted to the fabric shirt, a first plane perpendicular to the first axis of rotation passes through the first wheel and the spray area, a second plane perpendicular to the second axis of rotation passes through the second wheel and the spray area, and a third plane perpendicular to the third axis of rotation passes through the third wheel, through the spray area, and is positioned between the first plane and the second plane.

11. The method of claim 10 , further comprising adjusting the application rate of the pretreatment liquid by adjusting a size of a spray pattern of the one or more sprayers.

12. The method of claim 10 , wherein decreasing the height(s) of the one or more sprayers, decreasing the velocity of the spray device, and/or increasing the pressure of the pretreatment liquid increases the application rate of the pretreatment liquid.

13. The method of claim 10 , wherein increasing the height(s) of the one or more sprayers, increasing the velocity of the spray device, and/or decreasing the pressure of the pretreatment liquid decreases the application rate of the pretreatment liquid.

14. The method of claim 10 , wherein the spray device is activated by continuously depressing a button provided on the spray device to activate a controller that controls the moving of the spray device and to cause the spraying of the pretreatment liquid.

15. The method of claim 10 , wherein the spray device is activated by activating a controller that controls the moving of the spray device for a predetermined distance and the spraying of the pretreatment liquid for a predetermined time.

16. The method of claim 15 , wherein at least one of the predetermined distance and the predetermined time can be changed by the controller.

17. A method of applying pretreatment liquid to an area of a fabric shirt, the method comprising:

contacting a first wheel, a second wheel, and a third wheel of a spray device, for spraying the pretreatment liquid, to portions of a fabric shirt, the first wheel positioned at a first lateral side of the spray device, the second wheel positioned at a second lateral side of the spray device, and the third wheel positioned at a leading end of the spray device;

supporting the spray device on the portions of the fabric shirt using the first wheel, the second wheel, and the third wheel;

activating the spray device to spray the pretreatment liquid from one or more sprayers onto a spray area formed on the fabric shirt, and to move, via rotation of the first wheel the second wheel and the third wheel, the spray device from a first position to a second position on the fabric shirt as the pretreatment liquid is sprayed, and

adjusting an application rate of the pretreatment liquid by adjusting height(s) of the one or more sprayers attached to the spray device relative to the fabric shirt, and/or adjusting a velocity of the spray device during movement thereof from the first position to the second position;

wherein the first wheel has a first axis of rotation, the second wheel has a second axis of rotation, and the third wheel has a third axis of rotation; and

wherein, when the first wheel, the second wheel, and the third wheel are contacted to the fabric shirt, a first plane perpendicular to the first axis of rotation passes through the first wheel and the spray area, a second plane perpendicular to the second axis of rotation passes through the second wheel and the spray area, and a third plane perpendicular to the third axis of rotation passes through the third wheel, through the spray area, and is positioned between the first plane and the second plane.

18. The method of claim 17 , further comprising adjusting the application rate of the pretreatment liquid by one of adjusting a pressure of the pretreatment liquid from a pump to the one or more sprayers, and/or adjusting a size of a spray pattern of the one or more sprayers.

19. The method of claim 17 , wherein decreasing the height(s) of the one or more sprayers, decreasing the velocity of the spray device, and/or increasing the pressure of the pretreatment liquid increases the application rate of the pretreatment liquid.

20. The method of claim 17 , wherein increasing the height(s) of the one or more sprayers, increasing the velocity of the spray device, and/or decreasing the pressure of the pretreatment liquid decreases the application rate of the pretreatment liquid.