JP7599779B2 - Kit for attaching sheets with protrusions to rollers - Google Patents

Description

The present invention relates to a kit for attaching a sheet with protrusions to a roller.

Sheets with protrusions such as microneedles are known to have the effect of stimulating the skin and promoting skin penetration of cosmetic active ingredients. There are devices that use such protrusion-equipped sheets by removably attaching them to rollers, and the devices are excellent in portability and handling. Various technologies have been developed regarding such protrusion-equipped sheets.
For example, Patent Document 1 describes a kit including a sheet having microneedles, which are a type of protrusion, and an applicator to which the microneedle sheet can be attached. In the kit, the microneedle sheet is stored in a container having a porous sheet with the microneedle arrangement surface facing down. The porous sheet is arranged as a protective material for the microneedles.

JP 2020-099513 A

As in the kit described in Patent Document 1, when the protrusions of the microneedle sheet or the like are stored in a container, the protrusions are placed in contact with a protective material such as a porous sheet in the container. In this state, the sheet may be attached by pressing the surface of a roller against the surface opposite to the surface on which the protrusions are arranged. In this case, the porous sheet acts as a buffer material to prevent the microneedles from being crushed.
However, since the protrusions such as microneedles are parts that can touch the skin and puncture into the stratum corneum, it is desirable not to let them come into contact with anything other than the skin before use. Therefore, it is desirable to omit the protective material that the protrusions come into contact with from a hygienic standpoint. On the other hand, if the protective material is omitted, the protection for maintaining the shape of the protrusions will be insufficient.
As described above, it is difficult to simultaneously keep the protrusions hygienic and prevent damage to the protrusions, and there is room for improvement in this regard.

In view of the above, the present invention relates to a kit for attaching a sheet with protrusions to a roller, which can keep the protrusions on the sheet hygienic and enable the sheet to be securely attached to a roller while minimizing damage to the protrusions.

The present invention provides a kit for attaching a sheet with protrusions to a roller, the kit comprising: a sheet having a protrusion region with multiple protrusions and a base region where the protrusions are not arranged; a gap; and a sheet holder having support parts for supporting the base region of the sheet on both sides of the gap, the protrusions of the protrusion region being arranged within the gap with a space remaining between the protrusions and the bottom of the gap, and a roller can be pressed against the sheet from the side opposite the gap to attach the sheet to the roller.

The kit for attaching a sheet with protrusions to a roller of the present invention can keep the protrusions on the sheet hygienic and can be reliably attached to a roller while minimizing damage to the protrusions.

1 is a partial cross-sectional front view showing a schematic diagram of a preferred embodiment of a kit for attaching a protrusion-equipped sheet to a roller according to the present invention. FIG. 11 is a partial cross-sectional view showing a preferred example of use of the kit for attaching the protrusion-equipped sheet to a roller. FIG. 2 is a front view showing a preferred embodiment of the roller. 1 is a partial cross-sectional side view showing a preferred example of a method for producing roller-type protrusions using a kit for roller-attaching a protrusion-equipped sheet. FIG.

Below, a preferred example of the roller attachment kit for the protrusion-equipped sheet of the present invention will be described with reference to Figure 1.

As shown in FIG. 1, the roller attachment kit 10 for a sheet with protrusions (hereinafter simply referred to as kit 10) of this embodiment includes a set of a sheet 14 with protrusions 11 and a sheet holder 19. The sheet 14 is stored in the sheet holder 19.

The sheet 14 has a protrusion region 12 in which multiple protrusions 11 are arranged, and a base region 13 in which no protrusions 11 are arranged. The sheet 14 has a sheet-like substrate 15 arranged across the protrusion region 12 and the base region 13. The protrusion region 12 has a layered structure in which multiple protrusions 11 are arranged on the substrate 15. On the other hand, the base region 13 is an area of only the substrate 15. In the protrusion region 12, the protrusions 11 are preferably arranged at equal intervals vertically and horizontally on the substrate surface.

The surface of the sheet 14 on which the protrusions 11 are arranged is called the front surface 14S, and the opposite surface is called the back surface 14R. The sheet 14 has a width direction X along the axial direction of the roller 21 described below, and a longitudinal direction Y perpendicular to the width direction X. The sheet holder 19 also has a width direction X and a longitudinal direction Y aligned with the sheet 14.

Various materials can be used for the substrate 15. For example, from the viewpoint of making it easier to wind the substrate around the roller and from the viewpoint of suppressing bending of the sheet, a polylactic acid (hereinafter also referred to as PLA) film, a polyethylene terephthalate (hereinafter also referred to as PET) film, etc. are preferred. From the viewpoint of suppressing bending of the sheet, the thickness is preferably 100 μm or more. Furthermore, from the viewpoint of making it easier to wind the substrate 15 around the roller, the thickness is preferably 500 μm or less.

The protrusion 11 has a spire-like, e.g., needle-like, shape that can pierce the keratin of the skin of various parts of the human body, such as the cheeks and lips of the face. For example, it may have a cone shape with a circular or elliptical base, or a pyramid shape with a rectangular or polygonal base. The cross section of the protrusion 11 may have various geometric shapes, such as a circle or a polygon.

The height H of the protrusions 11 from the surface of the substrate 15 can be set as appropriate depending on the purpose of use. For example, the height H of the protrusions 11 is preferably 10 μm or more, more preferably 50 μm or more, and even more preferably 100 μm or more. The height H of the protrusions 11 is preferably 1000 μm or less, more preferably 750 μm or less, and even more preferably 500 μm or less.

The density of the protrusions 11 in the protrusion region 12 is preferably 100/cm2 ^{or more, and more preferably 200/cm2 or more, from the viewpoint of facilitating efficient puncturing of multiple protrusions even when the overall area of the sheet is small. Moreover, the density is preferably 2000/cm2 or less} , more preferably 1000/cm2 ^{or less ,} and even more preferably 500/ ^cm2 or ^less , from the viewpoint of preventing the tip of the protrusion region from coming into surface contact with the skin during puncturing due to an increase in the number of protrusions, thereby hindering the puncturing effect.

As described above, the distance between the tips of the protrusions 11 in the protrusion region 12 is preferably 10 μm or more, more preferably 30 μm or more, and even more preferably 50 μm or more, from the viewpoint of preventing the puncturing effect from being hindered by the increased number of protrusions causing the tips of the protrusion region to come into surface contact with the skin when puncturing. Also, as described above, the distance between the tips is preferably 1000 μm or less, more preferably 800 μm or less, and even more preferably 600 μm or less, from the viewpoint of making it easier to puncture multiple protrusions efficiently even when the overall area of the sheet is small.

Various materials can be used for the protrusions 11 depending on the purpose. For example, from the viewpoint of reducing the weight and suppressing the bending of the sheet, PLA, PET, hyaluronic acid, etc. are preferable. The protrusions 11 may also contain a cosmetic active ingredient. Examples of the cosmetic active ingredient include various commonly used ingredients, such as whitening agents, antioxidants, cleaning agents, anti-aging agents, skin texture treatment agents, etc. Such protrusions 11 may be soluble or insoluble. From the viewpoint of the above-mentioned cosmetic effect, it is preferable that the protrusions 11 are soluble. This solubility means that they can be destroyed or disintegrated inside the keratinous material of the skin, for example, by natural moisturizing factors or external moisture.

The sheet holder 19 has, in the width direction X, a gap 16 and a pair of support parts 17, 18 that support the base region 13 of the sheet 14 on both sides of the gap 16. The support parts 17, 18 are connected to the gap bottom 16B and stand upright toward the opening side of the sheet holder 19. The support parts 17, 18 and the gap bottom 16B may be molded as a single unit, or may be formed by joining separate members.
In the sheet holder 19, the sheet 14 is stored with the surface 14S on which the protrusions 11 are arranged facing down, i.e., with the protrusions 11 facing the gap 16. More specifically, in the width direction X, the surface 14S of the protrusion region 12 of the sheet 14 is stored in the gap 16, and the sheet ends 14A and 14B in the base region 13 on both sides of the protrusion region 12 are supported by the supports 17, 18. At this time, the protrusions 11 of the protrusion region 12 of the sheet 14 are arranged facing into the gap 16, leaving a space 20 between the protrusions 11 and the gap bottom 16B.

In the kit 10, it is preferable that no adhesive or the like is provided on the surface 14S of both ends 14A, 14B of the sheet 14 with the basal region 13. This allows the protrusions 11 to exert the desired effect on the skin without causing discomfort to the user, even if both ends 14A, 14B come into contact with the skin when the sheet 14 is attached to the roller 21 (see FIG. 2) and pressed against the skin.

Various materials can be used for the support parts 17 and 18. For example, polystyrene resin, polypropylene resin, PET resin, etc. are preferred from the viewpoint of moldability as a container.

In the kit 10, the sheet 14 preferably has a cantilever measurement value (bending resistance) of 70 mm or more. Such a sheet 14 has an appropriate rigidity capable of suppressing the occurrence of bending. Therefore, when the sheet 14 is placed in the sheet holder 19 as described above, it can be stored while leaving the above-mentioned space 20 in a good condition. From this viewpoint, the bending resistance of the sheet 14 is more preferably 50 mm or more, and even more preferably 70 mm or more.
The upper limit of the bending resistance is not particularly limited, but from the viewpoint of facilitating winding around the roller 21, it is preferably 200 mm or less.
The bending resistance is measured by measuring the deflection of the sample due to its own weight, and a measurement method conforming to ISO standard 9073-7 can be used as a cantilever measurement. The bending resistance can be measured by a bending resistance tester (manufactured by Daiei Scientific Instruments Co., Ltd., model: CAN-1MCC).

In the sheet holder 19, the depth D of the gap 16 from the support surface 17A, 18A to the surface of the gap bottom 16B is set taking into consideration the height H of the protrusion 11, and is preferably deeper than the height H of the protrusion 11. In this case, the height H of the protrusion 11 is preferably determined based on a planned maximum value.
For example, from the viewpoint of preventing the protrusions 11 from contacting the gap bottom 16B when the sheet 14 is attached to the roller 21, and from the viewpoint of preventing the protrusions 11 from contacting the gap bottom 16B even when the sheet 14 is slightly bent, the depth D of the gap 16 is preferably 1.1 times or more, more preferably 1.5 times or more, and even more preferably 2 times or more, the height H of the protrusions 11. Furthermore, from the viewpoint of portability as a kit, the depth D of the gap 16 is preferably 30 times or less, more preferably 20 times or less, and even more preferably 10 times or less, the height H of the protrusions 11.

The width WA of the gap 16 of the sheet holder 19 (length in the width direction X, the distance between the support portions 17, 18) is set according to the width of the protruding region 12 of the sheet 14 (length in the width direction X).
Therefore, it is preferable that the ratio (WA/WS) of the width WA of the gap 16 of the sheet holder 19 to the width WS (length in the width direction X) of the sheet 14 is as follows: That is, from the viewpoint of ensuring a sufficient arrangement area for the protrusions 11 in the protrusion region 12, the ratio (WA/WS) is preferably 0.6 or more, and more preferably 0.8 or more. Also, from the viewpoint of suppressing bending of the sheet 14 stored in the kit 10, the ratio (WA/WS) is preferably 0.95 or less, and more preferably 0.92 or less. The above ratio (WA/WS) corresponds to the ratio of the width WS of the sheet 14 to the width of the protrusion region 12.

2, it is preferable that the width WA of the gap 16 of the sheet holder 19 is shorter than the axial length WR of the roller 21. This allows the roller 21 to roll on the supports 17 and 18 without coming off when the sheet 14 is attached to the surface of the roller 21.
The axial length WR of the roller 21 is basically equal to or less than the width WA of the sheet 14, and is preferably set with a slight margin as shown in FIG. 2, i.e., less than WA. When the axial length WR of the roller 21 is set with a margin, the ratio (WA/WR) of the width WA of the gap 16 to the axial length WR of the roller 21 is preferably 0.6 or more, more preferably 0.8 or more, from the viewpoint that the roller and the sheet can be easily attached by taking a sufficient specified area. The ratio (WA/WR) is preferably 0.95 or less, more preferably 0.92 or less, from the viewpoint that the user can easily puncture the protrusion at the desired position by being aware of the rolling of the WR width when puncturing by attaching the sheet to almost the entire surface of the roller.

The sheet holder 19 preferably has guide portions 23, 24 that guide the rolling direction of the roller 21 outward in the width direction X of each of the support portions 17, 18. The guide portions 23, 24 are arranged adjacent to the support portions 17, 18, and are higher by a height HG than the height of the support portions 17, 18 (corresponding to the depth D of the gap portion 16). The support portions 17, 18, the guide portions 23, 24, and the gap portion bottom portion 16B may be integrally molded or may be configured separately. In particular, the material of the guide portions 23, 24 is preferably a material with a smooth surface that allows the roller 21 to roll smoothly, such as resin, metal, etc. From the viewpoint of successfully guiding the rolling direction of the roller 21, it is preferable that the guide portions 23, 24 are rail-shaped extending in the rolling direction. When made rail-shaped, the guide portion may extend continuously, but may also be arranged in multiple discontinuous guide portions to guide the roller 21 in a substantially rail-like manner.

The distance DG (length in the width direction X) between the guide portions 23, 24 is preferably equal to or greater than the axial length WR of the roller 21, and is preferably a width that allows the roller 21 to stably roll on the back surface 14R of the sheet 14. For example, the distance DG is preferably slightly longer than the axial length WR of the roller 21, i.e., exceeds WR. Also, the distance DG is preferably slightly longer than the width WS of the sheet 14. In this case, for example, it is preferable to set the difference (DG-WR) between the distance DG between the guide portions 23, 24 and the axial length WR of the roller 21 in the range of 0 mm or more and 1 mm or less.
The ratio (WA/DG) of the width WA of the gap 16 to the distance DG (length in the width direction X) between the guide parts 23 and 24 is preferably 0.6 or more, more preferably 0.8 or more, from the viewpoint of obtaining dimensions that make it easy to successfully apply the sheet even if the user's hand is misaligned when applying the sheet to the roller. Moreover, the ratio (WA/DG) is preferably 0.95 or less, more preferably 0.92 or less, from the viewpoint of easily achieving application of the sheet over the entire axial length WR of the roller 21 and preventing the sheet from becoming difficult to roll due to dimensional tolerances.

For example, when the width WS of the sheet 14 is 20 mm or less, the widthwise length ((DG-WA)/2) of each of the support parts 17 and 18 that supports the sheet 14 is preferably 0.5 mm or more and 5 mm or less, more preferably 0.7 mm or more and 3 mm or less, and even more preferably 1 mm or more and 2 mm or less. Note that when the width WS of the sheet 14 is longer than 20 mm, it is preferable that the widthwise length ((DG-WA)/2) that supports the sheet 14 is longer than the above length in order to stably place the sheet 14. For example, each of the support parts 17 and 18 may have a length of about 5% to 15% of the sheet width.

The height HG of the guide parts 23, 24 above the support surface 17A, 18A is preferably a height that does not impede the rolling of the roller 21. For example, the height HG is preferably equal to or less than [roller radius] - [roller shaft radius], and more preferably less than [roller radius] - [roller shaft radius].

By providing the above-mentioned guide parts 23, 24, it is possible to prevent the roller 21 from meandering when it is rolled on the back surface 14R of the sheet 14. In other words, it is possible to stably roll the roller 21 along the guide parts 23, 24. This allows the width direction X of the sheet 14 and the axial direction of the roller 21 to be aligned, and the sheet 14 can be better attached to the roller surface 21S. It is also possible to prevent the roller 21 from moving off the support parts 17, 18 and accidentally forcing the protruding area 12 of the sheet 14 toward the gap part 16 with the corners of the roller 21. As a result, the sheet 14 can be accurately and smoothly stretched on the roller surface 21S simply by rolling the roller 21 along the guide parts 23, 24.

The back surface 14R of the sheet 14 and the surface 21S of the roller 21 are preferably attached using a peelable adhesive, and a layer of the adhesive (hereinafter referred to as the adhesive layer) is preferably disposed on either the back surface 14R of the sheet 14 or the surface 21S of the roller 21.
From the viewpoint of being able to replace sheet 14 and use roller 21 repeatedly, it is preferable that an adhesive layer (not shown) be provided on back surface 14R of sheet 14, i.e., the surface opposite to the surface on which protrusion portion 11 is provided.

The kit 10 is configured such that the roller 21 is pressed against the sheet 14 from the side opposite the gap 16, which is the surface 14S, to attach the roller 21 and the sheet 14. At this time, the protrusions 11 are configured not to come into contact with the gap bottom 16B, leaving a space 20 in the gap 16. The base region 13 of the sheet 14 is disposed on the support portions 17, 18, and the pressing of the roller 21 during the above attachment prevents the sheet 14 from shifting or warping. This makes it easier to ensure the space 20 even during the attachment stage, and makes it possible to prevent the protrusions 11 from coming into contact with the gap bottom 16B.
Therefore, damage to the protrusions 11 can be suppressed and the sheet 14 can be properly attached to the roller surface 21S. Furthermore, since the protrusions 11 do not come into contact with other objects when the sheet 14 is attached, the protrusions 11 of the sheet 14 can be kept clean and hygienic. Furthermore, since the space 20 is secured, there is no need to use a protective material to protect the protrusions 11, which reduces costs.

Next, the roller-type protrusion providing kit will be described.
The roller-type protrusion providing kit includes the above-mentioned kit 10 for roller-attaching the protrusion-equipped sheet, and a roller rolling device 31 having a roller 21 arranged so as to be freely rollable.
The roller rolling tool 31 preferably has a handle 32 that can be held by hand. Being able to be held by hand means that the shape and dimensions of the tool allow the user to hold the tool by hand and roll the roller.

An example of a roller rolling device 31 is shown in FIG. 3. The roller rolling device 31 shown in FIG. 3 preferably has a roller 21 and a roller shaft 25 that allows the roller 21 to roll freely. It further preferably includes roller support parts 33A and 33B that support both ends of the roller shaft 25, a support arm 34 that connects the roller support parts 33A and 33B, and a handle part 32 that extends from the support arm 34 in a direction perpendicular to the roller shaft 25 and can be held by hand. The configuration for attaching the roller 21 to the roller shaft 25 so that it can roll freely can be any of various configurations that can be normally adopted. For example, a bearing may be disposed between the roller 21 and the roller shaft 25. The bearing allows the roller 21 to roll without coming off the roller shaft 25.

The roller rolling device 31 shown in FIG. 3 can move the roller 21 while rolling it by pushing the handle 32 along the extending direction thereof, i.e., in a direction perpendicular to the roller shaft 25 .
Specifically, in the above-mentioned kit 10, while gripping the handle 32 of the roller rolling tool 31 with the hand, the roller 21 is rolled on the support parts 17, 18 along the guide parts 23, 24 (see FIG. 2) via the sheet 14. This allows the sheet 14 to be attached to the roller 21 in the same manner as when the roller rolling tool 31A is applied to the skin.

Next, a method for manufacturing the roller-type protrusion will be described below with reference to FIGS.
The roller 21 is pressed against the kit 10 for roller-attaching a sheet with projections and rolled to attach the sheet 14 to the roller 21, thereby producing roller-type projections. Specifically, this is done as follows.
First, as shown in Fig. 2, in the kit 10 for applying a sheet with projections to a roller, the base regions 13, 13 of the sheet 14 are disposed and supported on the supports 17, 18 in the sheet holder 19. As shown in Fig. 4, the longitudinal direction Y of the sheet 14 is stored along the longitudinal direction Y of the sheet holder 19. The length of the sheet 14 is preferably set to the circumferential length of the roller 21.
The roller 21 is pressed against the back surface 14R of the sheet 14 in the direction of arrow B as shown in Fig. 4, with the width direction X of the sheet 14 and the axial direction of the roller 21 aligned as shown in Fig. 2. At this time, the base regions 13, 13 of the sheet 14 are clamped between the support portions 17, 18 of the sheet holder 19 and the roller 21, and the position is fixed.
Next, the roller 21 pressed in the direction of arrow B is rolled in the direction of arrow C along the guides 23, 24 to attach the sheet 14 to the roller surface 21S. This results in a roller-type protrusion. At this time, the roller 21 can be rolled by gripping the handle 32 of the roller rolling tool 31 with the hand. This allows the roller-type protrusion to be manufactured smoothly by the same operating method as when the roller rolling tool 31 is applied to the skin. Note that the width, height, etc. of the protrusion 11 are shown slightly exaggerated in the drawings for ease of explanation.

The roller-type protrusions (roller rolling device 31 with sheet 14 attached to roller surface 21S) manufactured as described above can be used for various purposes. For example, they can be suitably used for attaching a cosmetic sheet that allows beauty essence to be absorbed transdermally through the protrusions, attaching a vaccination sheet that allows a vaccine to be administered into the skin through the protrusions, attaching a medical sheet that allows medicine to be absorbed transdermally through the protrusions (for example, skin medicines (e.g., medicines for eczema, dermatitis, etc.), anti-inflammatory analgesics (e.g., poultices)), etc.

The present invention will be described in more detail below with reference to examples, but the present invention should not be construed as being limited thereto.

Example 1
Cantilever measurements were performed in accordance with ISO standard 9073-7. The above-mentioned test machine was used. A PLA film with a length of 250 mm, width of 25 mm, and thickness of 100 μm was used as a test piece, and bending resistance was measured using the above-mentioned test machine. The film was then cut into a length of 30 mm and a width of 56 mm. This film was placed on a concave sheet holder with a gap width WA of 50 mm and a gap depth D of 1 mm. The state after 30 seconds in the placed state was confirmed, and those in which the test piece did not come into contact with the floor surface of the sheet holder were rated as "satisfactory", and those in which the test piece did come into contact were rated as "not good".
Example 2
The measurements were carried out in the same manner as in Example 1, except that the material of the sheet was a PET film and the thickness was 200 μm.

(Comparative Example 1)
The measurements were carried out in the same manner as in Example 1, except that the material of the sheet was a low-density polyethylene (LDPE) film and the thickness was 60 μm.

The results of the above measurements are shown in Table 1 below.

The above results show that the sheet of Example 1 had a cantilever measurement value of 70 mm, and exhibited sufficient flexural strength compared to Comparative Example 1.
In addition, the suitability of the flexural strength was judged based on the state of the sheet when placed on the concave sheet holder, with those test pieces that did not come into contact with the floor surface of the sheet holder support stand being rated "suitable" and those that did come into contact being rated "not suitable."
It was found that the sheets of Examples 1 and 2 are less likely to warp when used in a kit for attaching a sheet with protrusions to a roller for cosmetic purposes to the skin, can be kept hygienic, and can be attached to a roller with minimal damage to the protrusions.

10 Kit for attaching sheet with protrusions to roller 11 Protrusion 12 Protrusion region 13 Base region 14 Sheet 14A, 14B Ends in width direction of sheet 14S Surface of sheet 14R Reverse surface of sheet 15 Substrate 16 Gap 16B Bottom of gap 17, 18 Support 17A, 18A Surface of support 19 Sheet holder 20 Space 21 Roller 21S Surface of roller 23, 24 Guide 25, 35 Roller shaft 31, 31A Roller rolling device 32 Handle 33A, 33B Roller support 34 Support arm D Depth of gap DG Distance between guides H Height of protrusion HG Height of upper surface of guide from surface of support WA Width of gap WR Axial length of roller WS Width of sheet

Claims (8)

a sheet having a protruding region in which a plurality of protruding portions are arranged and a base region in which the protruding portions are not arranged, and a sheet holder having a gap and support portions for supporting the base region of the sheet on both sides of the gap;
the protrusions of the protrusion region are disposed in the gap with a space remaining between the protrusions and a bottom of the gap,
The kit for attaching a sheet with protrusions to a roller is configured to roll the sheet by pressing a roller against the sheet from the side opposite the gap, thereby allowing the sheet to be attached by wrapping it around the roller. 2. The kit for attaching a projection-equipped sheet to a roller according to claim 1, wherein the sheet holder has a guide portion, which is disposed on an outer side in a width direction of the support portion, along which the roller can be rolled. The roller attachment kit for a sheet with protrusions according to claim 1 or 2, wherein the sheet has a cantilever measurement (bending resistance) of 70 mm or more and 200 mm or less. The kit for attaching a sheet with protrusions to a roller according to any one of claims 1 to 3, wherein the width of the gap is shorter than the axial length of the roller. The kit for attaching a sheet with protrusions to a roller according to any one of claims 1 to 4, wherein the sheet has an adhesive layer on the surface opposite to the surface on which the protrusions are arranged. A roller-type protrusion providing kit comprising a roller attachment kit for a protrusion-equipped sheet according to any one of claims 1 to 5, and a roller rolling device that arranges the roller so that it can roll freely. The roller-type protrusion providing kit according to claim 6, wherein the roller rolling tool has a handle that can be held by hand. A method for manufacturing roller-type protrusions, comprising pressing the roller against the kit for attaching a protruding sheet to a roller according to any one of claims 1 to 5 and rolling the roller, thereby attaching the sheet to the roller.

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