The present invention relates to a master processing apparatus for performing a master processing operation on a target substrate.
Master processing apparatuses for performing master processing operations, such as laminating, adhesive transfer, magnet making and other such operations are known in the art. Some of these apparatuses use a pair of feed rolls containing wound supplies of stock materials, which may be mounted individually to the apparatus frame, as is shown in U.S. Pat. No. 5,584,962, or which may be mounted together to the apparatus frame by a cartridge, as is shown in U.S. Pat. No. 5,580,417 (each of these patents are hereby incorporated into the present application by reference). Other types of apparatuses use pouches made of a piece of stock material folded in half. These pouches are typically used for laminating, and are used by placing the target substrate between the pouch halves and then feeding the pouch individually into the apparatus for application of pressure and/or heat.
On one hand, pouches have the advantage of coming in predetermined sizes and can avoid the need for cutting and trimming after the processing operation. On the other hand, cartridge type and individual feed roll type apparatuses have the advantages of the ease of mounting the supplies and avoiding the need for feeding individual pouches into the apparatus for each operation.
The present invention endeavors to provide a solution combining the advantages of using pouches and of using a cartridge together.
One aspect of the present invention provides a master processing apparatus for performing a master processing operation on a target substrate. The apparatus includes a frame, a pouch holder mounted to the frame, a supply, and a processor. The supply includes a plurality of pouches arranged in the pouch holder. Each pouch includes a pair of sheets joined at leading ends thereof and adhesive provided on an inner surface of at least one of the sheets. The pouch holder enables the pouches of the supply to be successively exposed as a leading pouch in an operative position wherein one of the sheets of the leading pouch can be unfolded away from the other sheet to open the leading pouch into an open position for receipt of the target substrate. The processor is operable to perform a processing operation wherein adhesive bonding is affected between the sheets of the leading pouch and the target substrate received therein as they are moved through the processor in a feeding direction.
Another aspect of the present invention provides a method for performing a master processing operation on a target substrate using a master processing apparatus. The method comprises: providing a supply including a plurality of pouches on a frame of the apparatus with a leading one of the pouches in an operative position, each pouch including a pair of sheets joined at leading ends thereof and adhesive provided on an inner surface of at least one of the sheets; unfolding one of the sheets of the leading pouch in the operative position away from the other sheet to open the leading pouch into an open position for receipt of the target substrate; positioning the target substrate on the other sheet; and advancing the leading pouch and the target substrate received therein through a processor to perform a processing operation wherein adhesive bonding is affected between the sheets of the leading pouch and the target substrate.
Still another aspect of the present invention provides a supply for a master processing apparatus operable to affect adhesive bonding between sheets of a pouch to a target substrate. The apparatus includes a frame and a processor operable to perform a processing operation wherein adhesive bonding is affected between the sheets of a pouch and a target substrate received therein as they are moved through the processor in a feeding direction. The supply comprises a pouch holder constructed to be removably mounted to the frame of the apparatus, and a plurality of pouches arranged in the pouch holder. Each pouch includes a pair of sheets joined at leading ends thereof and adhesive provided on an inner surface of at least one of the sheets. The pouch holder when removably mounted to the frame enables the pouches to be successively exposed as a leading pouch in an operative position wherein one of the sheets of the leading pouch cam be unfolded away from the other sheet to open the leading pouch into an open position for receipt of the target substrate, and thereafter the leading pouch with the target substrate can be fed into the processor for performance of the processing operation.
Other aspects, features and advantages of this invention will become apparent from the following detailed description when taken in conjunction with the accompanying drawings, which are a part of this disclosure and which illustrate, by way of example, principles of this invention.
The accompanying drawings facilitate an understanding of the various embodiments of this invention. In such drawings:
In the illustrated embodiment, the master processing apparatus 10 is structured for use as a laminating apparatus for laminating a target substrate. However, other variations of master processing operations may be performed with the apparatus, as will be described in greater detail below.
As shown in
As shown in
More specifically, the frame 12 includes a feed opening 24 and an exit or discharge opening 26, as best shown in
The input tray 28 may be movably connected to the frame 12 for selective movement between operative and inoperative positions. For example, the input tray 28 may be pivotably or slidably mounted for selective movement with respect to the frame 12. In general, the input tray 28 may have any construction or configuration, and in fact is not a required feature.
The leading laminating pouch 16 and target substrate S received therein may be advanced through the feed opening 24 and through and past the processor to emerge from the discharge opening 26 with the target substrate S adhesively bonded to the laminating sheets 20, 22 of the leading laminating pouch 16. The processor provides a pressing force that acts on the target substrate S and on the laminating sheets 20, 22 of the laminating pouch 16 to affect the desired processing operation, as will be described in greater detail below.
As best shown in
The cartridge holders 32, 34 are oriented such that a cartridge 18 may be dropped vertically downwardly into the frame 12. Specifically, to mount a cartridge 18 to the frame 12, the cartridge 18 is slidably engaged with track portions 44 provided by the cartridge holders 32, 34. The track portions 44 guide the sides of the cartridge 18 as the cartridge 18 is moved into the frame 12.
A friction roller may be provided adjacent the processor to engage the sheet 20 of leading pouch 16 folded down to the open position so as to urge the leading one of the pouches 16 into the processor. However, any other suitable mechanism or device may be provided to operatively engage the leading one of the pouches 16 of the cartridge 18 with the processor. Also, the user could simply manually push the lead pouch 16 forward into the processor.
The arm portions 38 of the cartridge holders 32, 34 are positioned on the input tray surface 30 and function as an alignment guide to assist in correctly aligning the target substrate S and laminating sheets 20, 22 with the feed opening 24.
The cartridge holders 32, 34 and cartridge 18 may each provide lock structures to releasably secure the cartridge 18 to the cartridge holders 32, 34 of the frame 12. Further, the frame 12 may include an ejector mechanism that is operable to release the cartridge 18 from the cartridge holders 32, 34. For example, the ejector mechanism may include a biasing structure, such as a spring, that may be manually or electrically actuated to urge or eject the cartridge 18 in an outward direction with respect to the frame 12.
In the illustrated embodiment, the laminating pouches 16 are contained within a cartridge 18 to facilitate easy removal and replacement of the laminating pouches 16. However, the frame 12 may be constructed and arranged to removably mount the laminating. pouches 16 arranged in a stack without the use of a cartridge 18. As mentioned above, any type of pouch holder, fixed or removable, may be used.
As best shown in
In the illustrated embodiment, each laminating pouch 16 includes a pair of laminating sheets 20, 22 joined at leading ends thereof and a pressure-sensitive adhesive provided on an inner surface of the laminating sheet 22. The laminating sheets 20, 22 may be made of any material, and may be transparent or translucent laminating films. For example, the laminating sheet 22 could be a polypropylene while the laminating sheet 20 could be a polyester. Also, the laminating sheets 20, 22 may be part of a single sheet folded along a transversely extending fold line. These examples are in no way intended to be limiting.
The laminating sheets 20, 22 may have any shape or configuration. In the illustrated embodiment, that shape is rectangular to accommodate the rectangular shape of standard letter paper, business cards, and photographs, for example. However, the shape of the laminating sheets 20, 22 could be circular, ovoid, triangular, or any other conceivable shape. Further, the laminating sheets 20, 22 need not be identical in shape, although that is preferable.
The pressure-sensitive adhesive used may be of any type, including, but not limited to, a UV cured adhesive, an acrylic based emulsion, hot melt applied, or any other type of adhesive.
A release liner 52 separates the laminating sheets 20, 22 from one another. The release liner 52 includes an outer release surface that engages the adhesive on the laminating sheet 22 (if both sheets of each pouch have adhesive, then both sides of the liner would be release surfaces). The release liner 52 may be made of any suitable material and the release characteristics of the outer release surface may be provided in any way, such as by silicone or wax coating. Where a heat activated adhesive is used, the release liner can be omitted, although it may be desirable to use if the adhesive becomes tacky at a relatively low temperature.
As shown in
The apparatus 10 may include an unfolding mechanism that includes at least one movable portion engagable with the one of the sheets 20 of the leading pouch 16 when the cartridge 18 is mounted to the frame 12 and movable to unfold the one of the sheets 20 of the leading pouch 16 away from the other sheet to open the leading pouch 16 when the cartridge 18 is mounted to the frame 12 for receipt of the target substrate S, as shown in
For example, as shown in
In another example, one of the laminating sheets 20 may be constructed of a heavier material than the other of the sheets 22 such that the one sheet 20 unfolds away from the other sheet 22 due to gravity when the cartridge 18 is mounted to the frame 12.
In yet another example, a feature, such as a hinge 64 as shown in
Alternatively, the laminating sheets 20,.22 may be separated by the user's hand, thus avoiding the need for any mechanism for unfolding.
Operation of the apparatus 10 will now be described in greater detail. In the illustrated embodiment, to perform a processing operation, the cartridge holders 32, 34 of the frame 12 are adjusted to the appropriate position and a cartridge 18 containing a stack of laminating pouches 16 is mounted to the cartridge holders 32, 34.
The unfolding mechanism, such as lever 54, or the user's hand is used to unfold the one of the sheets 20 of the leading pouch 16 away from the other sheet 22 to open the leading pouch 16 into the open position for receipt of the target substrate S, as shown in
The leading laminating pouch 16 in the open position and the target substrate S received therein are advanced through the feed opening 24 and through and past the processor to emerge from the discharge opening 26 with the target substrate S adhesively bonded to the laminating sheets 20, 22 of the leading laminating pouch 16, as shown in
The processor has been configured to press the laminating sheets 20, 22 of the laminating pouch 16 against the opposing sides of the target substrate S and/or to one another so as to affect adhesive bonding between the target substrate S and the laminating sheets 20, 22. For example, it may use conventional nip rollers 66, 68, as shown in
With respect to the release liner 52, the user may simply remove the liner 52 prior to advancement of the sheets 20, 22 and target substrate S through the processor. Also, the liner 52 may be folded at its lead end as described in U.S. application Ser. No. 10/727,561 to Nordin et al. filed Dec. 5, 2003, the entirety of which is incorporated herein by reference. This will enable the user to progressively withdraw the release liner 52 from between the laminating sheets 20, 22 to allow the laminating sheets 20, 22 adhere to the target substrate S and to one another as the target substrate S and laminating pouch 16 proceed into the processor. The movement of the release liner 52 may be described as a progressive rolling or peeling motion. The bonded laminating sheets 20, 22 and target substrate S exit at the discharge opening 26 of the frame 12, and the release liner 52 remains at the feed opening 24 of the frame 12 for disposal.
As another alternative, the wider part of the liner 52, as shown in
In the illustrated embodiment, an actuator 56 is provided to advance the laminating pouch 16 and target substrate S through the processor. As shown in
As mentioned above,
A feeder may be provided to advance the stack of laminating pouches 16 such that a laminating pouch adjacent the leading laminating pouch becomes the next leading laminating pouch and is positioned successively to enable one of the sheets of the next leading pouch to be unfolded away from the other sheet to open the next leading pouch into the open position for receipt of the target substrate S. As shown in
Also, a gauge assembly may be included in the apparatus 10 to provide an indication of the amount of laminating pouches 16 remaining in a cartridge 18. For example, the gauge assembly may provide an electronic signal, such as a flashing LED, that indicates that a limited number of laminating pouches 16 remains in the cartridge 18.
The adhesive present on at least one of the laminating sheets 20, 22 may be a heat-activated type adhesive. In this case, the processor may include heating elements that are powered by a power source to emit heat at a predetermined temperature to effectively activate the adhesive. It is noted that for certain application, the adhesive present on the at least one of the laminating sheets may also be an adhesive that does not require heat to increase adherence properties thereof. In this case, the heating elements may not be heated by the power source. The processor may have any construction suitable for heating the laminating sheets and applying pressure to them. For example, the processor may use heat platens, heated rollers, a combination of these, or any suitable heating elements for applying heat to the laminating sheets. Likewise, the processor may use an arrangement of rollers, fixed or passive roller bearing structures, or any other suitable structures for applying pressure to the laminating sheets.
The heating elements may be controllable between various relative temperatures to accommodate different laminating sheet thicknesses and materials. Also, the processor may be operated at various speeds to impart the desired adhesion properties. Likewise, the pressure applied by the processor to the laminating pouch and target substrate may be varied. The apparatus 10 may include a control system to set one or more operating parameters of the processor to the specific requirements of the laminating materials 20, 22 and target substrate S. For example, such parameters may include the feed rate of the laminating materials 20, 22 and target substrate S, temperature of the heating elements, and pressure of the processor.
Further details and embodiments of processing apparatuses are disclosed in U.S. application Ser. No. 10/146,144 to Velasquez et al., the entirety of which is herein incorporated by reference.
In alternative embodiments, the supply of pouches need not be arranged in a stack. For example, the pouches could be arranged in end to end relation on a supply roll. One way to do this would be to provide a continuous backing sheet or liner and arrange the pouches on the liner in end to end relation. The backing sheet would be fed into the processor and rotation of the nip rollers in the apparatus processor could simultaneously serve to bond the sheets of the leading pouch over the target substrate, while advancing the next pouch into the operative or ready position on an input tray whereby that pouch is exposed as the leading pouch and can be opened for receipt of the target substrate. Adjacent pouches may be spaced sufficiently to allow the pouch being processed to clear the processor while the next one remains upstream of the processor ready to receive the target substrate. As another alternative, the pouches could be joined together end to end with a perforated line between the trailing and leading edges of adjacent pouches. As each lead pouch is fed into the processor it can be broken away from the successive one, and then the successive one can be fed by power or manually into the operative or ready position.
In general, any suitable structure may be used as the pouch holder and may hold the pouches in any format.
Also, the laminating pouch 16 may be used for other applications and in other contexts. For example, the laminating pouch 16 could be modified for use as a magnet making device (one sheet being a flexible magnetized sheet and the other being a laminating film or an aggressive or non-aggressive mask) or an adhesive transfer device (one sheet being an adhesive coated release liner and the other being an aggressive or non-aggressive mask). Further details and embodiments of pouches are disclosed in U.S. application Ser. No. 10/727,561 to Nordin et al., the entirety of which is herein incorporated by reference.
It can thus be appreciated that the aspects of the present invention have been fully and effectively accomplished. The foregoing specific embodiments have been provided to illustrate the structural and functional principles of the present invention, and are not intended to be limiting. To the contrary, the present invention is intended to encompass all modifications, alterations, and substitutions within the spirit and scope of the appended claims.
The present application claims priority to U.S. Provisional Patent Application 60/441,107 filed Jan. 21, 2003, the contents of which are incorporated herein in their entirety.
Number | Date | Country | |
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60441107 | Jan 2003 | US |