Information
-
Patent Grant
-
6779453
-
Patent Number
6,779,453
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Date Filed
Monday, September 30, 200222 years ago
-
Date Issued
Tuesday, August 24, 200420 years ago
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Inventors
-
Original Assignees
-
Examiners
-
CPC
-
US Classifications
Field of Search
US
- 101 212
- 101 216
- 101 217
- 101 219
- 101 483
- 101 485
- 101 494
- 156 152
- 156 184
- 156 384
- 156 385
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International Classifications
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Abstract
A system and method for adhering a fabric to a backing substrate is disclosed. The system includes at least one roll of a reusable backing substrate, wherein the reusable backing substrate supports the fabric during a printing process. The system also includes at least one roll of fabric and a lamination system for removably adhering the fabric to the backing substrate. A print zone is configured for receiving the backed fabric and prints a pattern on the backed fabric. After the pattern is printed, the fabric is removed from the backing substrate and the backing substrate may be reused in another printing process. The invention is also directed to a method for printing a pattern on a layer of fabric using a reusable backing substrate and a laminated backing substrate used in the disclosed system and method.
Description
FIELD OF THE INVENTION
The present invention generally relates to printing fabric substrates, and more particularly to a printing system that uses a removable backing to support a fabric in a typical digital printing process.
BACKGROUND OF THE INVENTION
In the fabric printing industry, fabrics are typically colored with coloring agents, such as dyes or pigments, using screen printing technology. Most screen printing technologies employ rotary screen printers that use patterns incorporated into fine metal screens that are shaped into cylindrical forms. The coloring agents, in a print paste form, are pumped through tubing into the cylindrical-shaped screens and subsequently transferred to the fabric through the patterned screens by a squeegee that presses the paste through the screens and onto the fabric. After a print run, the rotary screen printer must be shut down to clean the various colors of print paste from the tubing and screens. The cleanup process is time intensive and environmentally unfriendly because a large amount of effluent is required to clean the print paste from the rotary screen printer. In addition to cleaning the rotary screen printer, a cylindrical screen with a different pattern must be inserted into the rotary screen printer to print a different pattern.
To ensure that the pattern printed on the fabric is not distorted, industrial fabric printing machines stretch and glue the fabric to a moving belt that is run through the printing machine. The moving belt is indexed through the printing machine and the various screen stages. Attaching the fabric to the belt prohibits the fabric from moving with respect to the belt and ensures fabric motion control, as well as adequate registration of the fabric such that the fabric moves in a path corresponding to a movement path of the belt. However, gluing the fabric to the belt is an extremely dirty process and creates a large environmentally unfriendly waste stream from the gluing process and the subsequent washing and stripping processes. These inherent problems make industrial fabric printing processes prohibitive to smaller scale users for use in short run fabric printing, such as an office or a store.
To remedy the need for printing processes available on a smaller than industrial scale, ink-jet printing processes for fabrics have been developed. As known to those of ordinary skill in the art, digital printers utilize minute droplets of ink that are injected from nozzles in the ink-jet printer onto a target surface, such as the fabric. In order to produce an image or pattern with a desired sharpness on the fabric, special fabrics, pre-printing processing steps and post-printing processing steps are used to condition and/or chemically or otherwise fix the colorants to the fibers on the fabric. The pre-printing conditioning steps are used to initially condition the humidity and temperature of the fabric to provide an optional ink reception state for the fabric and the post-conditioning steps are used to “fix” the coloring agent to the fabric after the ink has been received by the fabric. The fabric to which the pattern is printed may be backed with a paper layer to reinforce and stabilize the fabric, as well as to produce a barrier to ink blow through. The fabric may also be pre-treated with organic materials in order to increase ink receptivity and reduce the amount of ink spread, which arises from bleeding of the printed ink through fibers in the fabric. As known to those of ordinary skill in the art, the problem of printing on unbacked fabrics using an ink-jet printer is not trivial. The fundamental nature of woven fabrics makes feeding the fabric and printing a pattern on the fabric more complex than ink-jet printing on paper. For instance, fabrics have an almost infinite variation in fabric characteristics due to various factors including, but not limited to, the type of fiber used in the fabric, the fiber weight, the fabric weight, the different blends of materials used in the fiber, the weave pattern used to create the fabric, the environmental conditions existing at the time of printing, the pre-treatments used on the fabric, the surface finish of the fabric, the varying moisture contents of the fiber in the fabric, the non-linear behavior of woven materials, and the difference in fabric behavior between wet and dry fabrics. These factors prohibit the fabrics from moving accurately and uniformly through the printing processes using standard media-moving machines used in ink-jet printers.
In order to stabilize the fabric for passage through an ink-jet printer, the fabric may be laminated to a paper substrate off-line to form a backed fabric. The backed fabric may then be passed through a slightly modified ink-jet printer for the formation of a pattern on the backed fabric. However, the use of off-line paper backings may be costly, time consuming, and may limit the range of fabrics that may be fed through the ink-jet printer. Furthermore, the fabric may be damaged when the fabric is removed from the paper backing. Therefore, a fabric backing system that allows the fabric to pass through an ink-jet printer and produces a printed pattern with a low level of distortion, yet has a low level of damage to the fabric when the fabric is removed from the backing, would be an improvement in the art.
BRIEF SUMMARY OF THE INVENTION
In accordance with the invention, a method for printing a pattern on a layer of fabric removably adhered to a backing substrate is disclosed. The backing substrate comprising a carrier, an adhesive, and a release liner is provided. The release liner is removed from the backing substrate and the layer of fabric is adhered to the adhesive on the backing substrate to form a backed fabric. A pattern is printed on the backed fabric, the fabric is removed from the adhesive on the backing substrate, and the release liner is re-adhered to the adhesive layer of the backing substrate so that the backing substrate can be reused.
A backing substrate for use in a fabric printing process is also disclosed. The backing substrate comprises a carrier, an adhesive, and a release liner. The carrier and the release liner are substantially the same length.
A system for printing a pattern on a backed fabric is also disclosed. The system includes at least one roll of a reusable backing substrate, where the backing substrate is used to support a fabric through a print zone in the printing system. The system also includes at least one roll of fabric. A first roller included in the system is configured to adhere the fabric to the backing substrate to form a backed fabric. The backed fabric is then received by the print zone where a pattern is printed on the backed fabric. The system also comprises at least one device configured to remove the printed fabric from the backing substrate.
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS
While the specification concludes with claims particularly pointing out and distinctly claiming that which is regarded as the present invention, the present invention can be more readily ascertained from the following description of the invention when read in conjunction with the accompanying drawings in which:
FIG. 1A
represents a cross-section of a backing substrate used in an embodiment of the present invention;
FIG. 1B
represents a cross-section of the backing substrate of
FIG. 1A
in an embodiment of the present invention, where a release liner of the backing substrate has been removed;
FIG. 1C
represents a cross-section of the backing substrate of
FIG. 1B
in an embodiment of the present invention, where a fabric has been adhered to the backing substrate;
FIG. 2
represents a diagrammatic representation of the basic architecture and workings of a fabric lamination system used in an embodiment of the present invention; and
FIG. 3
represents an alternative embodiment of the basic architecture and workings of the fabric lamination system of the present invention.
DETAILED DESCRIPTION OF THE INVENTION
The invention described herein is directed to a fabric lamination system for use with fabric printing processes that use ink-jet printers or other printing devices that transmit ink through the air to the fabric. More specifically, a system that uses an easily removable backing that may be temporarily adhered to a fabric to support the fabric during passage through a print zone is disclosed. The system enables a user to support a fabric with a backing, print a pattern on the backed fabric with an ink-jet printer, and prevent the printed image from being distorted on the fabric. As used herein, the term “pattern” refers to any type of design, mark, figure, identification code, graphic, work, image, or the like which may printed.
It will be apparent from the following description that the drawings described herein used to represent various features of the present invention are not drawn to scale, but are rather for illustrative and exemplary purposes only. Referring now to drawing
FIG. 1A
, there is shown a cross-section of a backing substrate (hereinafter “substrate
10
”) used in the present invention. As illustrated in
FIG. 1A
, the substrate
10
comprises three layers including a release liner
12
, a layer of low tack or similar adhesive
14
, and a carrier substrate
16
(hereinafter “carrier”).
In the illustrated embodiment, the release liner
12
comprises a wax release liner, but other release liners that perform functions the same as, or equivalent to, the wax release liner
12
described herein are meant to be encompassed by the present invention. Other non-stick materials that may be used in the release liner
12
include, without limitation, TEFLON® brand non-stick coating (available from the E. I. DuPont de Nemours Company, of Wilmington, Del.), silicon, polyester, cellophane, nylon, various other plastic materials, or any other non-stick material known to those of ordinary skill in the art. In the illustrated embodiment, the release liner
12
is releasably adhered to the adhesive
14
and functions to prevent the various layers of the substrate
10
from becoming permanently adhered together when the substrate
10
is rolled on a roll (shown in FIG.
2
).
The adhesive
14
in the illustrated embodiment comprises a low tack adhesive, such as the adhesive used on Post-it® notes (available from the 3M Company, of St. Paul, Minn.). It will be apparent that any solvent-based low tack adhesive known to those of ordinary skill in the art that may be used to temporarily adhere one surface to another surface may be used for the adhesive
14
of the present invention. Other low-tack adhesives that may be used include, without limitation, rubber cement, adhesives used in transparent cellophane adhesive tapes, such as Scotch® tape, or 3M brand Spray Mount®) Artist's Adhesive (both available from the 3M Company, of St. Paul, Minn.). As illustrated, the adhesive
14
is disposed on the carrier
16
such that the adhesive
14
remains adhered to the carrier
16
at all times through the printing processes. Although the carrier
16
used in the illustrated embodiment comprises a paper carrier
16
, it will be apparent that any carrier substrate that performs functions the same as, or similar to, the carrier
16
described herein may be used.
Referring now to drawing
FIG. 1B
, there is shown a cross section of a delaminated substrate generally at
11
. As illustrated, the delaminated substrate
11
comprises the substrate
10
of
FIG. 1A
with the release liner
12
removed, where the adhesive
14
remains disposed on the carrier
16
. Since the release liner
12
is a wax release liner in the illustrated embodiment and is removably adhered to the adhesive
14
, the release liner
12
may be easily separated from the adhesive
14
while the adhesive
14
remains adhered to the carrier
16
.
Referring now to drawing
FIG. 1C
, there is shown a cross-section of a backed fabric generally at
13
. As illustrated, the backed fabric
13
has a layer of fabric
18
removably adhered to the adhesive
14
. It will be appreciated that any type of fabric known to those of ordinary skill in the art may be adhered to the adhesive
14
and passed through the printing process of the present invention. It will be further appreciated that materials besides fabric may be used in the embodiments of the present invention, such as other gray goods, wallpapers, or other fabric like materials known to those of ordinary skill in the art. As illustrated, the carrier
16
provides support to the fabric
18
during the printing process, as will be described in further detail below. However, in a manner similar to the release liner
12
, the fabric
18
is not permanently adhered to the adhesive
14
, but may be subsequently removed from the adhesive
14
without damaging the fabric
18
using substantially small delamination forces.
Referring now to drawing
FIG. 2
, there is shown a diagrammatic representation of a lamination and tension control system (hereinafter “lamination system”) used in conjunction with the printing process of the present invention generally at
20
. The lamination system
20
includes a plurality of driven and idler rollers that function in concert to carry, decrease, stick, laminate and support the fabric
18
, the substrate
10
, the delaminated substrate
11
, and the backed fabric
13
for passage and transport through the lamination system
20
. Although not illustrated, the lamination system
20
also includes at least one drive gear, or other drive mechanism known to those of ordinary skill in the art, operably connected to at least one idler, drum, or roller of the lamination system
20
in order to impart movement, at least in part, to the various moving elements of the lamination system
20
. The lamination system
20
described herein adheres the fabric
18
to the delaminated substrate
11
as illustrated in FIG.
1
C and prints a pattern on the backed fabric
13
using a printing process, such as a digital printing system.
The lamination system
20
begins the printing process by unwinding, or unrolling, a fabric supply roll
22
and a substrate roll
24
. As used herein, the terms “unwinding” and “unrolling” may be used synonymously. As the printing process proceeds, the release liner
12
is peeled away from the adhesive
14
by a peel roller
26
. As used herein, the term “peel roller” will be used to refer to a device or roller that functions to remove the release liner
12
from the substrate
10
and is meant to include any device known to those of ordinary skill in the art that performs such a function. As illustrated, once the release liner
12
is removed from the substrate
10
, the release liner
12
follows a path through the lamination system
20
as represented by a dashed line and moves in a direction indicated by arrows
28
. The delaminated substrate
11
, comprising the carrier
16
and the adhesive
14
, follows a path through the lamination system
20
, where the delaminated substrate
11
path is represented by a solid line and moves in a direction indicated by arrows
30
. The substrate roll
24
unwinds in a direction of arrow
34
as the printing process proceeds. The arrows depicted on rollers in the drawings indicate the direction in which the various rollers or idlers rotate. The delaminated substrate
11
is supported by idler wheels
32
(hereinafter “idler”) along the delaminated substrate
11
path. The fabric supply roll
22
also unwinds and the path that the fabric
18
follows through the lamination system
20
, or the fabric
18
path, is indicated by a solid line and arrows
36
. As illustrated, the fabric
18
and substrate
10
described herein comprise sheets that are longer in length than in width, such that the fabric
18
and the substrate
10
are supplied in rolls as described herein.
After the fabric
18
is unwound from the fabric supply roller
22
, the fabric
18
is conditioned for printing by running the fabric
18
through a tension control and crease control system (hereinafter “conditioning system”). As used herein, the term “conditioning” will be used to refer to any treatment performed on the fabric
18
before the fabric
18
has a pattern printed thereon, including, but not limited to, smoothing the fabric
18
by ironing or steaming, applying tension to the fabric, treating the fabric such that coloring agents adhere more efficiently to the fabric
18
, or any other conditioning treatment used on fabrics in a printing process as known to those of ordinary skill in the art. Since the unwound fabric
18
may have various creases and irregularities present, the fabric
18
is conditioned to remove any creases or irregularities.
As illustrated, the conditioning system comprises a first cross-web stretch roller
38
, which as known to those of ordinary skill in the art may be used to take creases out of the fabric
18
and provide a light cross-web tension to the fabric
18
. After passage through the first stretch cross-web roller
38
, the fabric
18
is passed through a bowed roller
40
that is powered by a bow roller drive motor
41
. The bowed roller
40
is used to further prepare the fabric
18
for printing and may further smooth the fabric
18
by removing other creases or irregularities not removed by the cross-web stretch roller
38
. After leaving the bowed roller
40
, the fabric
18
continues along the fabric
18
path indicated by arrows
36
through a second cross-web stretch roller and a tension along-web tensioning roller (hereinafter “tension system”) collectively illustrated as the tension system
39
. The tension system
39
stretches the fabric
18
to the proper cross/along web-tension for the subsequent printing process. The fabric
18
is then passed under a fabric tension sensor
44
, which may comprise a charge-coupled device (CCD) sensor array with a low incident angle illumination light source. The fabric tension sensor
44
may also detect any other surface irregularities, such as a knot, in the fabric
18
. If any knots or irregularities are detected, the fabric tension sensor
44
may direct the printing system to raise the printing components used to print the pattern or lower the fabric in an effort to ensure that the components are not damaged by the knot or other hard irregularity within the fabric
18
.
Alternatively, if the fabric tension sensor
44
detects irregularities or deformities in the fabric
18
that may cause the printed pattern to be distorted or irregular on the fabric
18
, the fabric tension sensor
44
may direct the printing system to mark the irregular area on the fabric
18
such that distorted or irregular areas in the finished product may be designated as such and easily detected. Although the conditioning system in the illustrated embodiment has been described as including stretch rollers
38
, the bowed roller
40
, the tension system
39
, and the tension sensor
44
, any other devices or methods known to those of ordinary skill in the art used for conditioning fabric
18
for printing are meant to be encompassed by the present invention. Although not illustrated, the lamination system
20
may also include a second array of sensors for detecting additional irregularities, such as knots and creases. Other devices that may be used in conjunction with or in place of the conditioning system described herein include, without limitation, ironing systems, steaming systems, and/or skewed rollers.
Once the fabric
18
is conditioned, the fabric
18
is removably adhered to the adhesive
14
on the delaminated substrate
11
by a pressure roller
46
. As illustrated in
FIG. 2
, the pressure roller
46
and a large radius drum
52
come in contact at a nib, shown generally at arrow
15
, where the fabric
18
and the delaminated substrate
11
come in contact from their respective paths. As illustrated, the pressure roller
46
comprises an idler roller that is adjustable to vary the space between the pressure roller
46
and the large radius drum
52
. The adjustable space allows for various fabric
18
thicknesses to be rolled between the pressure roller
46
and the large radius drum
52
. The pressure roller
46
provides a lamination force that adheres the fabric
18
to the adhesive
14
on the delaminated substrate
11
to produce the backed fabric
13
. Although the pressure roller
46
has been described in the illustrated embodiment, it will be appreciated that any other device that provides a lamination force to cause fabric
18
to adhere to the adhesive
14
on the delaminated substrate
11
may be used in the present invention. The large radius drum
52
comprises a large radius roller with a rough surface that receives the backed fabric
13
. As known to those of ordinary skill in the art, the rough surface on the large radius drum
52
prevents the backed fabric
13
from moving or slipping on the surface of the large radius drum
52
.
The lamination system
20
may also include a brush (not illustrated) positioned after the pressure roller
46
in the fabric path at arrow
31
. The brush may be used to further condition the backed fabric
13
uniformly and avoid pressure artifacts in the backed fabric
13
. It will be apparent to those of ordinary skill in the art that the conditioning system is important to ensure that the fabric
18
is smooth before being adhered to the delaminated substrate
11
, because once the fabric
18
is laid out and adhered to the delaminated substrate
11
, the backed fabric
13
will remain in the same condition throughout the printing process. Thus, since the adhesive
14
on the delaminated substrate
11
temporarily holds the fabric
18
in position for printing, any irregularity present on the surface of the fabric
18
when the fabric
18
is laid out on the delaminated substrate
11
may cause a distorted pattern to be printed on the backed fabric
13
.
After the fabric
18
is adhered to the delaminated substrate
11
, a motion-sensing device
48
is used to sense the motion of the backed fabric
13
as the backed fabric
13
enters the print zone
50
. In the illustrated embodiment, the motion-sensing device
48
comprises a navigation sensor system (as described in U.S. Pat. No. 6,195,475, “Navigation System for Handheld Scanner”, Beausoleil and Allen, assigned to Hewlett-Packard Company) that uses low angle lighting to create high contrast shadow patterns on a surface of the backed fabric
13
, where a CCD array of the navigation sensor system captures images of the backed fabric
13
. Using electronics and software of the navigation sensor system, the axis motion of the backed fabric
13
may be controlled in order to minimize banding and other backed fabric
13
motion variables in order to minimize distortion and irregular printing patterns on the backed fabric
13
during the printing process.
Once the backed fabric
13
passes the motion sensing device
48
, the backed fabric
13
enters the print zone
50
. In the illustrated embodiment, the print zone
50
comprises the large radius drum
52
and an ink-jet printer that functions to print a pattern on a surface
54
of the backed fabric
13
that is located within the print zone
50
. As used herein, the term “ink-jet printer” will be used to refer to any electromechanical device adapted to deposit ink onto a fabric. As the backed fabric
13
passes through the print zone
50
, the backed fabric
13
is supported by the large radius drum
52
which is designed to function in concert with other components within the print zone
50
to securely hold and accurately advance the backed fabric
13
in a stable state throughout the print zone
50
. Also, since the backed fabric
13
is adhered to the delaminated substrate
11
, the backed fabric
13
is prevented from slipping on the delaminated substrate
11
and prevents a distorted pattern from being printed on the backed fabric
13
. Furthermore, since the surface of the large radius drum
52
is roughened, the backed fabric
13
is prevented from slipping. It will be apparent to those of ordinary skill in the art that the ink-jet printer in the print zone
50
may be configured to communicate with the motion sensing device
48
and the tension sensor
44
such that the ink-jet printer may be adjusted during the printing process to incorporate data gathered from the motion sensing device
48
and/or the tension sensor
44
. For instance, if an irregularity is detected in the backed fabric
13
, components within the print zone
50
may be used to raise print heads located within the ink-jet printer or lower the large radius drum
52
to prevent the print heads from being damaged by the irregularity, such as a crease or knot. Alternatively, the motion-sensing device
48
may be used to help ensure the print quality of the image printed on the backed fabric
13
is achieved.
Once the pattern has been printed on the backed fabric
13
, the fabric
18
is removed from the adhesive
14
on the delaminated substrate
11
. As previously described herein, because the adhesive
14
comprises a low tack adhesive, the fabric
18
may be removed from the delaminated substrate
11
without damaging the fabric
18
. An idler
32
located on the left side of the drawing
FIG. 2
supports the fabric
18
. A reattach roller
53
supports the delaminated substrate
11
. As illustrated, the fabric
18
follows the fabric path indicated by arrows
36
and the delaminated substrate
11
follows the substrate path indicated by arrows
30
. The diversion of the fabric
18
and the delaminated substrate
11
to different paths and the motion of the rolls provide the force required to remove the fabric
18
from the delaminated substrate
11
. The fabric
18
also passes through or near a dryer
56
such that ink from the ink-jet printer may be dried, or fixed, on the fabric
18
. The dry fabric
18
continues on the fabric
18
path over the idler
32
and is wound on a fabric take-up roll
58
. The delaminated substrate
11
follows the unbaked substrate path
30
to the reattach roller
53
, and where the reattach roller
53
provides pressure against the idler roller
32
, or at the nib, the delaminated substrate
11
is brought into contact with and adhered to the release liner
12
. As illustrated, after the release liner
12
is separated from the substrate
10
, the release liner
12
follows the release liner path indicated by the dashed line and arrows
28
such that the release liner
12
is brought back into contact with the delaminated substrate
11
at the reattach roller
53
. The reattach roller
53
then re-adheres the release liner
12
to the adhesive
14
on the delaminated substrate
11
, and the substrate
10
, with the release liner
12
reattached is wound on a roll
60
. It will be apparent that the release liner
12
adhered on the substrate
10
may then be reused in a subsequent printing process for cost savings to the user. The substrate
10
is rolled on the roll
60
in the opposite direction that the substrate
10
is unwound from the substrate roll
24
. Thus, it will be apparent to those of ordinary skill that the substrate
10
on the roll
60
must either be rewound in the opposite direction for re-use on the substrate roll
24
or the roll
60
must be flipped around so that the substrate
10
may be unwound from the roll
60
during a subsequent printing process.
In the present embodiment, it will be further apparent that the various rolling and unrolling of the fabric
18
on the rolls
22
and
58
and the substrate
10
on rolls
24
and
60
during the printing process occur simultaneously and the speed of the rolling and unrolling may be controlled by a closed loop servo system (not illustrated) that uses encoders that are substantially similar to motion control systems as is known to those of ordinary skill in the art. In operation of the printing system, the substrate
10
will have the release liner
12
adhered to the adhesive
14
on the rolls
24
and
60
, but the release liner
12
will not be adhered to the delaminated substrate
11
as the delaminated substrate
11
passes through the print zone
50
. Rather, the fabric
18
will be adhered to the adhesive
14
on the delaminated substrate
11
as the backed fabric
13
passes through the print zone
50
.
Referring now to drawing
FIG. 3
there is shown an alternative embodiment of the lamination system of the present invention generally at
120
. The lamination system
120
of the alternative embodiment includes a fabric supply roll
22
, where fabric
18
is unwound off the fabric supply roll
22
and travels in a fabric
18
path indicated by a solid line and arrows
36
. The lamination system
120
also uses the substrate
10
of FIG.
1
A. As illustrated, a substrate roll
24
is unwound such that a release liner
12
is removed from the substrate
10
by a peel roller
26
to result in the delaminated substrate
11
. As illustrated, the delaminated substrate
11
follows a delaminated substrate path illustrated by a solid line and arrows
30
and the release liner
12
follows a release liner
12
path indicated by a dashed line and arrows
28
. As illustrated, the fabric
18
is adhered to the delaminated substrate
11
by a pinch roller
60
that provides a force to adhere the fabric
18
to the adhesive
14
of the delaminated substrate
11
to form a backed fabric
13
. Although not illustrated, it will be apparent to those of ordinary skill in the art that the various conditioning systems described herein with reference to
FIG. 2
may also be incorporated into the lamination system of FIG.
3
and not depart from the spirit of the present invention.
After the fabric
18
is adhered to the delaminated substrate
11
, the backed fabric
13
travels through a print zone
50
, which is depicted in the illustrated embodiment as including four print bars
62
. As the backed fabric
13
passes through the print zone
50
, the backed fabric
13
is supported by a large radius drum
52
which is designed to function in concert with other components within the print zone
50
to hold and advance the backed fabric
13
in a stable state throughout the print zone
50
, in a similar manner as described herein with reference to drawing FIG.
2
. As known to those of ordinary skill in the art, print bars
62
typically span a width of the media on which a pattern is to be printed. As illustrated, the print bars
62
are stationary in the print zone
50
wherein the backed fabric
13
is moved under the print bars
62
such that printing may take place. As known to those of ordinary skill in the art, each color used for printing has its own print bar
62
. Therefore, the number of print bars
62
used may vary depending on the number of colors used to produce the pattern on the backed fabric
13
.
Once the backed fabric
13
has the pattern printed thereon, the backed fabric
13
passes under or near a dryer
56
to dry, or cure, the ink on the backed fabric
13
. As illustrated, the fabric
18
is separated from the adhesive
14
on the delaminated substrate
11
by a separation roller
64
. It will be apparent that the separation roller
64
acts in a manner similar to the peel roller
26
described herein with reference to drawing FIG.
2
. As previously described herein, since the backed fabric
13
is adhered to the low-tack adhesive
14
, the fabric
18
may be removed from the adhesive
14
without damaging the fabric
18
. After the fabric
18
is separated from the delaminated substrate
11
, the fabric
18
is collected on a fabric take-up roll
58
. The delaminated substrate
11
is directed to a reattach roller
52
where the release liner
12
is re-adhered to the adhesive
14
on the delaminated substrate
11
and taken up by a roll
60
.
The lamination system
120
also includes a platform
70
where a user
72
of the lamination system
120
may be located to tend to and operate the lamination and printing system
120
. The user
72
may make various adjustments to the lamination system
120
during the printing process by visualizing the pattern printed on the backed fabric
13
to ensure that the printed pattern is not distorted. The illustrated lamination system
120
of drawing
FIG. 3
would be more economical to manufacture than the lamination system
20
depicted in drawing
FIG. 2
since there are fewer components and may be more suited to the production of short-run fabrics or fabric samples for the testing and evaluation of various printed patterns and fabrics.
Although the illustrated embodiments of drawings FIG.
2
and
FIG. 3
show the release liner
12
being reused and reattached to the delaminated substrate
11
, it will apparent to those of ordinary skill in the art that the delaminated substrate
11
and/or the release liner
12
may be discarded instead of re-used. For instance, if the substrate
10
has been used multiple times in the printing process, becomes excessively worn, loaded with loose fibers, soiled, or is damaged, the substrate
10
may be replaced. For instance, during operation, the substrate
10
may become excessively soiled with ink from the printing process or the adhesive
14
may become excessively coated with fibers that are shed off of the fabric
18
. For example, a loosely knit fabric or loose wound fibers may readily shed fibers that adhere to the adhesive
14
, making the adhesive
14
in the substrate
10
unsuitable for further use. However, if a tightly knit fabric (e.g., denim) is used, the adhesive
14
may have a minimal amount of fibers retained, thus lengthening the life of the adhesive
14
, and thus the substrate
10
. As shown in drawing
FIG. 3
, a take up reel
65
may be used to roll the release liner
12
instead of the release liner
12
traveling along the path indicated by the solid line and arrows
28
and being re-adhered to the substrate
10
. If the release liner
12
is taken up by the take up reel
65
, then the substrate
10
may be rolled on the roll
60
and discarded instead of being reused.
Although the present invention has been shown and described with respect to various illustrated embodiments, various additions, deletions and modifications that are obvious to a person of ordinary skill in the art to which the invention pertains, even if not shown or specifically described herein, are deemed to lie within the scope of the invention as encompassed by the following claims.
Claims
- 1. A method for printing a pattern on a fabric, comprising: providing a backing substrate comprising a release liner removably adhered to an adhesive, wherein said adhesive is disposed on a carrier; removing said release liner from said adhesive; adhering a fabric to at least a portion of said adhesive disposed on said carrier to form a backed fabric; printing a pattern on said backed fabric; removing said fabric from said portion of said adhesive disposed on said carrier; and re-adhering said release liner to said adhesive disposed on said carrier.
- 2. The method according to claim 1, further comprising: providing said backing substrate on a first roll; unrolling said first roll of said backing substrate; and re-rolling said backing substrate on a second roll.
- 3. The method according to claim 1, wherein removing said release liner from said adhesive, adhering said fabric to said at least portion of said adhesive, printing said pattern on said backed fabric, removing said fabric from said portion of said adhesive, and re-adhering said release liner to said adhesive occur simultaneously.
- 4. The method according to claim 1, wherein adhering said fabric to said adhesive comprises: providing a roller and a large radius drum; and rolling said fabric and said backing substrate between said roller and said large radius drum.
- 5. The method according to claim 1, further comprising conditioning said fabric before said fabric is adhered to said portion of said adhesive.
- 6. The method according to claim 1, wherein printing said pattern on said backed fabric comprises passing said backed fabric through a print zone comprising at least one ink-jet printer.
- 7. The method according to claim 1, wherein removing said release liner from said backing substrate comprises: providing a peel roller; and passing said backing substrate over said peel roller to remove said release liner from said backing substrate.
US Referenced Citations (9)