adhesive tape

Abstract

The present disclosure provides an improved adhesive tape composition for application to medical devices, such as wearable medical devices, that includes i) a fabric and ii) an adhesive.

Description

[Technical Field]

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims the benefit under 35 U.S.C. §119(e) of U.S. Provisional Patent Application No. 63 / 426,806, filed November 21, 2022, the entire disclosure of which is incorporated herein by reference. [Background technology]

[0002] background

[0002] Adhesive tapes are utilized in many different applications. One important use of adhesive tapes is in wearable devices, including medical devices. For example, adhesive tapes can be used to attach sensors of glucose monitoring medical devices to human skin to monitor subjects for diabetes treatment. Summary of the Invention [Problem to be solved by the invention]

[0003]

[0003] Currently available adhesive tapes for medical devices have limited durability when used with the medical device attached. For example, current adhesive tapes may have a certain thickness of adhesive, which may hinder the tape's ability to adhere to the user's skin. As a result, the medical device must be reapplied to the skin multiple times, which may affect the effectiveness of the device's monitoring. Furthermore, the adhesive tape must be able to support the weight of the medical device and ensure accurate sensor readings on the user. [Means for solving the problem]

[0004]

[0004] Therefore, the present disclosure provides an improved adhesive tape composition that is applied to a medical device, for example, a wearable medical device. As described herein, the adhesive tape composition can advantageously provide long-term use in a wearable device. Furthermore, the adhesive tape composition is breathable and provides bidirectional stretch properties, which allow for secure attachment to the user's skin and, at the same time, allows for long-term use on the medical device by following the user's movements.

[0005] BRIEF DESCRIPTION OF THE DRAWINGS

[0005] The detailed description makes particular reference to the accompanying drawings. [Brief explanation of the drawings]

[0006] [Figure 1] 1 is a cross-sectional view of an exemplary adhesive tape composition of the present disclosure. [Figure 2]

[0007] 1 is a scanning electron microscope (SEM) image of a cross section of an exemplary adhesive tape composition of the present disclosure. [Figure 3]

[0008] 3 is an SEM image of FIG. 2 with additional information regarding various elements of an exemplary adhesive tape composition of the present disclosure. [Figure 4]

[0009] 1 is an SEM image of a cross section of prior art composition 3M9907T demonstrating uniform thickness of fabric and adhesive. [Figure 5]

[0010] 1 is an SEM image of a cross section of prior art composition 3M9907W demonstrating uniform thickness of fabric and adhesive. [Figure 6]

[0011] Illustrates the variable thickness of the adhesive in terms of the embossed pattern on Sample 5 (i.e., 3619A). [Figure 7]

[0012] 1 shows uniform adhesive thickness for Sample 3 (i.e., Avery, MED5740), which does not have an embossed pattern. [Figure 8]

[0013] 1 shows uniform adhesive thickness for Sample 4 (i.e., Dermamed, DM2275), which does not have an embossed pattern. [Figure 9]

[0014] A cross section of the sample is shown cut with a razor along the dashed line, making sure to pass through the midpoint of the embossed area. [Figure 10]

[0015] 1 is an image of the original sample obtained to perform measurements as described in Example 3. [Figure 11]

[0016] A line 1 is shown drawn between the two highest points on the fabric surface on either side of the embossed area for making measurements as described in Example 3. [Figure 12]

[0017] 1 shows the location of the midpoint of the embossed area for taking measurements as described in Example 3. DETAILED DESCRIPTION OF THE INVENTION

[0007] Detailed Description

[0018] In an exemplary aspect, an adhesive tape composition 10 is provided. The adhesive tape composition comprises i) fabric 12 and ii) adhesive 14, as shown in FIG. 1 . Additionally, the adhesive tape composition may comprise i) fabric 12, ii) adhesive 14, and iii) releasable liner 16, as shown in FIG. 1 . In one embodiment, the fabric is a nonwoven fabric. In one embodiment, the fabric is a breathable fabric. In one embodiment, the fabric comprises polyurethane. In one embodiment, the fabric comprises polyurethane resin. In one embodiment, the fabric comprises polyurethane resin mixed with one or more additives. In one embodiment, the additive is selected from the group consisting of colorants, dyes, pigments, ultraviolet (UV) blockers, UV absorbers, or functional fillers, polymers, and any combination thereof.

[0008]

[0019] In one embodiment, a blend of polyurethane resin with polyethylene or other polypropylene resins can be utilized. Polyurethanes are generally known in the art for providing desirable properties such as flexibility and breathability. However, other polymer composite materials (e.g., polyester or polyolefin-based materials) can achieve breathability through processing or by incorporating functional additives. For example, in embodiments of the present disclosure, inorganic additives can be utilized as the backing fabric or film for adhesive tapes.

[0009]

[0020] In one aspect, the polyurethane-containing fabric can provide a high moisture vapor transmission rate (MVTR) value, which allows the tape to be breathable, desirably allowing for longer wear time on the user's skin and preventing skin irritation. In one embodiment, the fabric is configured to be bi-directionally stretchable.

[0010]

[0021] A variety of fabrics are contemplated for the adhesive tape compositions of the present disclosure, for example, fabrics available from Mativ Holdings, Inc. (Alpharetta, Georgia, USA).

[0011]

[0022] The fabric can have a range of different properties, including any of the following:

[0012] [Table 1]

[0013] [Table 2]

[0014]

[0023] In one embodiment, the fabric includes a front side and a back side, and the adhesive extends between and interconnects the back side of the fabric and the releasable liner. In one embodiment, the fabric is embossed to provide an embossed fabric. In one embodiment, the fabric is embossed on the front side to provide an embossed fabric. In one embodiment, the fabric is embossed on the back side to provide an embossed fabric. In one embodiment, the fabric is embossed on both the front and back sides to provide an embossed fabric.

[0015]

[0024] The embossed fabric includes a non-embossed portion and an embossed portion that extends away from the non-embossed portion. In the embossed fabric, the non-embossed and embossed portions provide two different thickness depths. This concept is illustrated in Figure 3 and described below. Additionally, Figures 4 and 5 show prior art compositions that include a uniform thickness of adhesive.

[0016]

[0025] In one embodiment, the embossed fabric can have a depth of the outer layer of the fabric that is not in contact with the adhesive, which is shown as "A" in Figure 3 and can be referred to as the "face side" of the fabric and the "adhesion depth" of the embossed portion.

[0017]

[0026] In one embodiment, the embossed fabric has a depth of the inner layer of the fabric in contact with the adhesive, which is shown as "B" in Figure 3 and can be referred to as the "backside" of the fabric and the "adhesion depth" of the non-embossed portion.

[0018]

[0027] Additionally, the fabric embossing process can form bridges that can connect opposing sides of two sections of the non-embossed portion of the embossed fabric, as shown as "C" in Figure 3. Each of "A," "B," and "C" in Figure 3 can have a particular thickness or range of thicknesses, as described herein.

[0019]

[0028] In one embodiment, one or more reservoirs are present on the embossed fabric. The reservoirs can be present, for example, as a result of embossing to place various "pockets" in the embossed fabric. For example, the reservoirs can occur in the embossed portion of the embossed fabric. For example, the reservoirs can occur in the non-embossed portion of the embossed fabric. In one embodiment, the reservoirs of the embossed fabric have a variable thickness. As used herein, "variable" thickness can refer to variability that follows a non-random design, for example, a pattern on the fabric. For example, the variability can refer to a pattern that is a result of embossing the embossed fabric.

[0020]

[0029] In one embodiment, the adhesive is present in one or more reservoirs of the embossed fabric. The adhesive can be present in one or more reservoirs of the embossed fabric formed as a result of embossing. In one embodiment, the adhesive is present in reservoirs formed in the embossed portion of the embossed fabric, as shown by "D" in Figure 3, which is represented by a thicker adhesive in this portion of the adhesive tape composition. Additionally, the adhesive is present in reservoirs formed in the non-embossed portion of the embossed fabric, as shown by "E" in Figure 3, which is represented by a thinner adhesive in this portion of the adhesive tape composition. Without being bound by any theory, it is believed that the presence of thicker and thinner amounts of adhesive along the embossed fabric can result in improved performance of the adhesive tape composition of the present disclosure.

[0021]

[0030] A variety of adhesives are contemplated for the adhesive tape composition of the present disclosure. For example, the adhesive can include, consist essentially of, or consist of a solvent-based acrylic adhesive, an acrylic-rubber hybrid adhesive, a rubber-based adhesive, a polyurethane adhesive, or a silicone adhesive. Furthermore, the adhesive can include, consist essentially of, or consist of a solids-based acrylic adhesive, an acrylic-rubber hybrid adhesive, a rubber-based adhesive, a polyurethane adhesive, or a silicone adhesive, up to 100% solids. In one aspect, the adhesive is suitable for long-term skin wear. In one embodiment, the adhesive is an acrylic resin. In one embodiment, the adhesive is medical grade.

[0022]

[0031] For example, adhesives such as Aroset S488 are available from Bostik, Inc. (Wauwatosa, Wisconsin, USA). Adhesives such as Durotack DT AH 115 are available from Henkel (Dusseldorf, Germany). Adhesives such as BTX-110 are available from Toyo Ink (Tokyo, Japan).

[0023]

[0032] The adhesive of the adhesive tape composition can have a range of different properties, including any of the following:

[0024] [Table 3]

[0025]

[0033] In one embodiment, the pressure-sensitive adhesive tape composition has a thickness of 8 to 20 mils (not including a releasable liner) as measured by PSTC 133 test method. In other embodiments, the pressure-sensitive adhesive tape composition has a thickness of 8 mils or more, 8.2 mils or more, 8.4 mils or more, 8.6 mils or more, 8.8 mils or more, 9 mils or more, 9.2 mils or more, 9.4 mils or more, 9.6 mils or more, 9.8 mils or more, 10 mils or more, 10.2 mils or more, 10.4 mils or more, 10.6 mils or more, 10.8 mils or more, 11 mils or more, 11.2 mils or more, 11.4 mils or more, 11.6 mils or more, 11.8 mils or more, 12 mils or more, 12.2 mils or more, 12.4 mils or more, 12.6 mils or more, 12.8 mils or more, 13 mils or more, 13.2 mils or more, 13.4 mils or more, 13.6 mils or more, 13.8 mils or more, 14 mils or more, 15 mils or more, 16 mils or more, 17 mils or more, 18 mils or more, 19 mils or more, 20 mils or more, 21 mils or more, 22 mils or more, 23 mils or more, 24 mils or more, 25 mils or more, 26 mils or more, 27 mils or more, 28 mils or more, 29 mils The thickness may be 4.2 mils or more, 14.4 mils or more, 14.6 mils or more, 14.8 mils or more, 15 mils or more, 15.2 mils or more, 15.4 mils or more, 15.6 mils or more, 15.8 mils or more, 16 mils or more, 16.2 mils or more, 16.4 mils or more, 16.6 mils or more, 16.8 mils or more, 17 mils or more, 17.2 mils or more, 17.4 mils or more, 17.6 mils or more, 17.8 mils or more, 18 mils or more, 18.2 mils or more, 18.4 mils or more, 18.6 mils or more, 18.8 mils, 19 mils or more, 19.2 mils or more, 19.4 mils or more, 19.6 mils or more, 19.8 mils or more, or 20 mils or more (including all ranges between any two recited thicknesses).

[0026]

[0034] In some embodiments, the fabric has a thickness of 3 mils or more, 3.2 mils or more, 3.4 mils or more, 3.6 mils or more, 3.8 mils or more, 4 mils or more, 4.2 mils or more, 4.4 mils or more, 4.6 mils or more, 4.8 mils or more, 5 mils or more, 5.2 mils or more, 5.4 mils or more, 5.6 mils or more, 5.8 mils or more, 6 mils or more, 6.1 mils or more, 6.2 mils or more, 6.3 mils or more, 6.4 mils or more, 6.5 mils or more, 6.6 mils or more, 6.7 mils or more, 6.8 mils or more, 6.9 mils or more, 7 mils or more, 7.1 mils or more, 7.2 mils or more, 7.3 mils or more, 7.4 mils or more, 7.5 mils or more, 7.6 mils or more, 7.7 mils or more, 7.8 mils or more The thickness (as measured by the PSTC 133 test method) may be 7.9 mils or more, 8 mils or more, 8.1 mils or more, 8.2 mils or more, 8.3 mils or more, 8.4 mils or more, 8.5 mils or more, 8.6 mils or more, 8.7 mils or more, 8.8 mils or more, 8.9 mils or more, 9 mils or more, 9.2 mils or more, 9.4 mils or more, 9.6 mils or more, 9.8 mils or more, 10 mils or more, 10.2 mils or more, 10.4 mils or more, 10.6 mils or more, 10.8 mils or more, 11 mils or more, 11.2 mils or more, 11.4 mils or more, 11.6 mils or more, 11.8 mils or more, or 12 mils or more (including all ranges between any two recited thicknesses). The same ranges apply to the embossed fabric, the embossed portion of the embossed fabric, and the non-embossed portion of the embossed fabric described herein.

[0027]

[0035] In some embodiments, the adhesive may be 1 mil or more, 1.2 mils or more, 1.4 mils or more, 1.6 mils or more, 1.8 mils or more, 2 mils or more, 2.2 mils or more, 2.4 mils or more, 2.6 mils or more, 2.8 mils or more, 3 mils or more, 3.1 mils or more, 3.2 mils or more, 3.3 mils or more, 3.4 mils or more, 3.5 mils or more, 3.6 mils or more, 3.7 mils or more, 3.8 mils or more, 3.9 mils or more, 4 mils or more, 4.1 mils or more, 4.2 mils or more, 4.3 mils or more, 4.4 mils or more, 4.5 mils or more, 4.6 mils or more, 4.7 mils or more, 4.8 mils or more, 4.9 mils or more, 5 mils or more, 5.1 mils or more, 5.2 mils or more, 5.3 mils or more, 5.4 mils or more, 5.5 mils or more, 5.6 mils or more, 5.7 mils or more, 5.8 mils or more, 5.9 mils or more, 6 mils or more, It may have a maximum thickness (as measured by PSTC 133 test method) of 6.1 mils or more, 6.2 mils or more, 6.3 mils or more, 6.4 mils or more, 6.5 mils or more, 6.6 mils or more, 6.7 mils or more, 6.8 mils or more, 6.9 mils or more, 7 mils or more, 7.1 mils or more, 7.2 mils or more, 7.3 mils or more, 7.4 mils or more, 7.5 mils or more, 7.6 mils or more, 7.7 mils or more, 7.8 mils or more, 7.9 mils or more, 8 mils or more, 8.1 mils or more, 8.2 mils or more, 8.3 mils or more, 8.4 mils or more, 8.5 mils or more, 8.6 mils or more, 8.7 mils or more, 8.8 mils or more, 8.9 mils or more, 9 mils or more, 9.2 mils or more, 9.4 mils or more, 9.6 mils or more, 9.8 mils or more, or 10 mils or more (including all ranges between any two recited thicknesses). Additionally, the adhesive, when present in the embossed and / or non-embossed portions of the embossed fabric, can be present in two or more different thicknesses as described above.

[0028]

[0036] In some embodiments, the releasable liner has a thickness of 1 mil or more, 1.2 mils or more, 1.4 mils or more, 1.6 mils or more, 1.8 mils or more, 2 mils or more, 2.2 mils or more, 2.4 mils or more, 2.6 mils or more, 2.8 mils or more, 3 mils or more, 3.1 mils or more, 3.2 mils or more, 3.3 mils or more, 3.4 mils or more, 3.5 mils or more, 3.6 mils or more, 3.7 mils or more, 3.8 mils or more, 3.9 mils or more, 4 mils or more, 4.1 mils or more, 4.2 mils or more, 4.3 mils or more, 4.4 mils or more, 4.5 mils or more, 4.6 mils or more, 4.7 mils or more, 4.8 mils or more, 4.9 mils or more, 5 mils or more, 5.1 mils or more or greater than 5.2 mils, 5.3 mils, 5.4 mils, 5.5 mils, 5.6 mils, 5.7 mils, 5.8 mils, 5.9 mils, 6 mils, 6.1 mils, 6.2 mils, 6.3 mils, 6.4 mils, 6.5 mils, 6.6 mils, 6.7 mils, 6.8 mils, 6.9 mils, 7 mils, 7.1 mils, 7.2 mils, 7.3 mils, 7.4 mils, 7.5 mils, 7.6 mils, 7.7 mils, 7.8 mils, 7.9 mils, or 8 mils (including all ranges between any two recited thicknesses).

[0029]

[0037] In one embodiment, the adhesive tape composition is configured to be attached to a medical device. In one embodiment, the medical device is a glucose monitoring device. In one embodiment, the medical device is a medical diagnostic device. In one embodiment, the medical device is a smart wearable device. In these embodiments, it is contemplated that the medical device utilizes adhesive tape to attach the device to the skin. Without being bound by any theory, the medical device can be attached to the skin via the adhesive tape for extended periods of time without experiencing edge lift or adhesive oozing at the periphery of the adhesive tape.

[0030]

[0038] Additionally, in some embodiments, the adhesive tape can be evaluated prior to use to analyze its biomedical or biocompatibility, for example, the adhesive tape can be tested for cytotoxicity, irritation, sensitization, etc., prior to use in accordance with the present disclosure.

[0031]

[0039] A variety of releasable liners are contemplated for the pressure-sensitive adhesive tape compositions of the present disclosure. For example, releasable liners such as Grade 52564 80# (basis weight in lb / ream) Supercalendered Kraft (SCK) white paper liner are available from Loparex (Cary, North Carolina, USA). Other releasable liners are available from, for example, MPI, Ahlstrom, MTI, and Mondi.

[0032]

[0040] For example, the releasable liner can have a basis weight of 42 to 96 lb / ream, preferably 60 to 80 lb / ream. In one embodiment, the releasable liner is siliconized on one side. In one embodiment, the releasable liner is siliconized on both sides. In one embodiment, the releasable liner is a poly-coated liner.

[0033]

[0041] In an exemplary aspect, a medical tape composition is provided. The medical tape composition comprises: i) a fabric; and ii) a means for attaching the medical device to a user. In one embodiment, the attaching means comprises an adhesive.

[0034]

[0042] In one embodiment, the connecting means is adapted to remain on the user without coming off for at least 1 day. In one embodiment, the connecting means is adapted to remain on the user without coming off for at least 2 days. In one embodiment, the connecting means is adapted to remain on the user without coming off for at least 3 days. In one embodiment, the connecting means is adapted to remain on the user without coming off for at least 5 days. In one embodiment, the connecting means is adapted to remain on the user without coming off for at least 7 days. In one embodiment, the connecting means is adapted to remain on the user without coming off for at least 10 days. In one embodiment, the connecting means is adapted to remain on the user without coming off for at least 14 days.

[0035]

[0043] In one embodiment, the medical device is a glucose monitoring device.

[0036]

[0044] In one embodiment, the fabric is a nonwoven fabric. In one embodiment, the fabric is a breathable fabric. In one embodiment, the fabric comprises polyurethane. In one embodiment, the fabric is configured to stretch in both directions.

[0037]

[0045] In one embodiment, the fabric includes a front side and a back side, and the adhesive extends between and interconnects the back side of the fabric and the releasable liner. In one embodiment, the fabric is embossed on the front side to provide an embossed fabric. In one embodiment, the fabric is embossed on the back side to provide an embossed fabric. In one embodiment, the fabric is embossed on both the front side and the back side to provide an embossed fabric.

[0038]

[0046] In one embodiment, one or more reservoirs are present on the embossed fabric. In one embodiment, the reservoirs of the embossed fabric have variable thicknesses. In one embodiment, the adhesive is present within one or more reservoirs of the embossed fabric.

[0039]

[0047] The following numbered embodiments are contemplated and are non-limiting: 1. An adhesive tape composition comprising i) a fabric and ii) an adhesive. 2. The adhesive tape composition according to clause 1, any other suitable clause, or any combination of suitable clauses, wherein the fabric is a nonwoven fabric. 3. The adhesive tape composition according to clause 1, any other suitable clause, or any combination of suitable clauses, wherein the fabric is a breathable fabric. 4. The adhesive tape composition of clause 1, any other suitable clause, or any combination of suitable clauses, wherein the fabric comprises polyurethane or a polyurethane resin. 5. The pressure-sensitive adhesive tape composition of clause 1, any other suitable clause, or any combination of suitable clauses, wherein the pressure-sensitive adhesive tape composition further comprises a releasable liner. 6. The pressure-sensitive adhesive tape composition of clause 1, any other suitable clause, or any combination of suitable clauses, wherein the fabric comprises a polyurethane resin mixed with one or more additives. 7. The pressure-sensitive adhesive tape composition of clause 6, any other suitable clause, or any combination of suitable clauses, wherein the additive is selected from the group consisting of a colorant, a dye, a pigment, an ultraviolet (UV) blocker, a UV absorber, or a functional filler, a polymer, and any combination thereof. 8. The adhesive tape composition of clause 1, any other suitable clause, or any combination of suitable clauses, wherein the fabric is configured for bidirectional stretch. 9. The adhesive tape composition of clause 1, any other suitable clause, or any combination of suitable clauses, wherein the fabric includes a front side and a back side, and the adhesive extends between and interconnects the back side of the fabric and the releasable liner. 10. The adhesive tape composition of clause 9, any other suitable clause, or any combination of suitable clauses, wherein the fabric is embossed on the front side to provide an embossed fabric. 11. The adhesive tape composition of clause 9, any other suitable clause, or any combination of suitable clauses, wherein the fabric is embossed on the backside to provide an embossed fabric. 12. The adhesive tape composition of clause 9, any other suitable clause, or any combination of suitable clauses, wherein the fabric is embossed on the front and back sides to provide an embossed fabric. 13. The adhesive tape composition of clause 9, any other suitable clause, or any combination of suitable clauses, wherein the fabric is an embossed fabric. 14. The adhesive tape composition of clause 13, any other suitable clause, or any combination of suitable clauses, wherein the embossed fabric comprises a non-embossed portion and an embossed portion. 15. The adhesive tape composition of clause 13, any other suitable clause, or any combination of suitable clauses, wherein the one or more reservoirs are present on the embossed fabric. 16. The adhesive tape composition of clause 15, any other suitable clause, or any combination of suitable clauses, wherein the reservoir portion of the embossed fabric has a variable thickness. 17. The adhesive tape composition of clause 15, any other suitable clause, or any combination of suitable clauses, wherein the adhesive is present in one or more reservoirs of the embossed fabric. 18. The adhesive tape composition of clause 1, any other suitable clause, or any combination of suitable clauses, wherein the adhesive comprises a solvent-based acrylic adhesive. 19. The adhesive tape composition of clause 1, any other suitable clause, or any combination of suitable clauses, wherein the adhesive comprises a solids-based acrylic adhesive. 20. The adhesive tape composition of clause 1, any other suitable clause, or any combination of suitable clauses, wherein the adhesive comprises an acrylic-rubber hybrid adhesive. 21. The adhesive tape composition of clause 1, any other suitable clause, or any combination of suitable clauses, wherein the adhesive comprises a rubber-based adhesive. 22. The adhesive tape composition of clause 1, any other suitable clause, or any combination of suitable clauses, wherein the adhesive comprises a polyurethane adhesive. 23. The adhesive tape composition of clause 1, any other suitable clause, or any combination of suitable clauses, wherein the adhesive comprises a silicone adhesive. 24. An adhesive tape composition according to clause 1, any other suitable clause, or any combination of suitable clauses, wherein the adhesive is adapted for long-term skin wear. 25. The adhesive tape composition of clause 1, any other suitable clause, or any combination of suitable clauses, wherein the adhesive is an acrylic resin. 26. The adhesive tape composition of clause 1, any other suitable clause, or any combination of suitable clauses, wherein the adhesive is medical grade. 27. An adhesive tape composition according to clause 1, any other suitable clause, or any combination of suitable clauses, configured to be attached to a medical device. 28. The adhesive tape composition of clause 27, any other suitable clause, or any combination of suitable clauses, wherein the medical device is a glucose monitoring device. 29. The adhesive tape composition of clause 27, any other suitable clause, or any combination of suitable clauses, wherein the medical device is a medical diagnostic device. 30. The adhesive tape composition of clause 27, any other suitable clause, or any combination of suitable clauses, wherein the medical device is a smart wearable device. 31. An adhesive tape composition comprising: i) a fabric; and ii) a means for connecting a medical device to a user. 32. The adhesive tape composition of clause 31, any other suitable clause, or any combination of suitable clauses, wherein the connecting means comprises an adhesive. 33. The adhesive tape composition of clause 32, any other suitable clause, or any combination of suitable clauses, wherein the adhesive comprises a solvent-based acrylic adhesive. 34. The adhesive tape composition of clause 32, any other suitable clause, or any combination of suitable clauses, wherein the adhesive comprises a solids-based acrylic adhesive. 35. The adhesive tape composition of clause 32, any other suitable clause, or any combination of suitable clauses, wherein the adhesive comprises an acrylic-rubber hybrid adhesive. 36. The adhesive tape composition of clause 32, any other suitable clause, or any combination of suitable clauses, wherein the adhesive comprises a rubber-based adhesive. 37. The adhesive tape composition of clause 32, any other suitable clause, or any combination of suitable clauses, wherein the adhesive comprises a polyurethane adhesive. 38. The adhesive tape composition of clause 32, any other suitable clause, or any combination of suitable clauses, wherein the adhesive comprises a silicone adhesive. 39. An adhesive tape composition according to clause 32, any other suitable clause, or any combination of suitable clauses, wherein the adhesive is adapted for extended skin wear. 40. The adhesive tape composition of clause 32, any other suitable clause, or any combination of suitable clauses, wherein the adhesive is an acrylic resin. 41. The adhesive tape composition of clause 32, any other suitable clause, or any combination of suitable clauses, wherein the adhesive is medical grade. 42. The adhesive tape composition of clause 31, any other suitable clause, or any combination of suitable clauses, wherein the adhesive tape composition is configured to be attached to a medical device. 43. The adhesive tape composition of clause 42, any other suitable clause, or any combination of suitable clauses, wherein the medical device is a glucose monitoring device. 44. The adhesive tape composition of clause 42, any other suitable clause, or any combination of suitable clauses, wherein the medical device is a medical diagnostic device. 45. The adhesive tape composition of clause 42, any other suitable clause, or any combination of suitable clauses, wherein the medical device is a smart wearable device. 46. ​​An adhesive tape composition according to clause 31, any other suitable clause, or any combination of suitable clauses, wherein the connecting means is adapted to remain on the user without becoming detached for at least one day. 47. An adhesive tape composition according to clause 31, any other suitable clause, or any combination of suitable clauses, wherein the connecting means is adapted to remain on the user without becoming detached for at least two days. 48. An adhesive tape composition according to clause 31, any other suitable clause, or any combination of suitable clauses, wherein the connecting means is adapted to remain on the user without becoming detached for at least three days. 49. An adhesive tape composition according to clause 31, any other suitable clause, or any combination of suitable clauses, wherein the connecting means is adapted to remain on the user without becoming detached for at least 5 days. 50. An adhesive tape composition according to clause 31, any other suitable clause, or any combination of suitable clauses, wherein the connecting means is adapted to remain on the user without becoming detached for at least 7 days. 51. An adhesive tape composition according to clause 31, any other suitable clause, or any combination of suitable clauses, wherein the connecting means is adapted to remain on the user without becoming detached for at least 10 days. 52. An adhesive tape composition according to clause 31, any other suitable clause, or any combination of suitable clauses, wherein the connecting means is adapted to remain on the user without becoming detached for at least 14 days. 53. The adhesive tape composition of clause 31, any other suitable clause, or any combination of suitable clauses, wherein the medical device is a glucose monitoring device. 54. The adhesive tape composition of clause 31, any other suitable clause, or any combination of suitable clauses, wherein the fabric is a nonwoven fabric. 55. The adhesive tape composition of clause 31, any other suitable clause, or any combination of suitable clauses, wherein the fabric is a breathable fabric. 56. The adhesive tape composition of clause 31, any other suitable clause, or any combination of suitable clauses, wherein the fabric comprises polyurethane. 57. The adhesive tape composition of clause 31, any other suitable clause, or any combination of suitable clauses, wherein the fabric comprises a polyurethane resin. 58. The adhesive tape composition of clause 31, any other suitable clause, or any combination of suitable clauses, wherein the fabric comprises a polyurethane resin mixed with one or more additives. 59. The pressure-sensitive adhesive tape composition of clause 58, any other suitable clause, or any combination of suitable clauses, wherein the additive is selected from the group consisting of a colorant, a dye, a pigment, an ultraviolet (UV) blocker, a UV absorber, or a functional filler, a polymer, and any combination thereof. 60. The adhesive tape composition of clause 31, any other suitable clause, or any combination of suitable clauses, wherein the fabric is configured for bidirectional stretch. 61. An adhesive tape composition according to clause 31, any other suitable clause, or any combination of suitable clauses, wherein the fabric includes a front side and a back side, and the adhesive extends between and interconnects the back side of the fabric and the releasable liner. 62. The adhesive tape composition of clause 61, any other suitable clause, or any combination of suitable clauses, wherein the fabric is embossed on the front side to provide an embossed fabric. 63. The adhesive tape composition of clause 61, any other suitable clause, or any combination of suitable clauses, wherein the fabric is embossed on the backside to provide an embossed fabric. 64. The adhesive tape composition of clause 61, any other suitable clause, or any combination of suitable clauses, wherein the fabric is embossed on the front and back sides to provide an embossed fabric. 65. The adhesive tape composition of clause 61, any other suitable clause, or any combination of suitable clauses, wherein the fabric is an embossed fabric. 66. The adhesive tape composition of clause 65, any other suitable clause, or any combination of suitable clauses, wherein the embossed fabric comprises a non-embossed portion and an embossed portion. 67. The adhesive tape composition of clause 65, any other suitable clause, or any combination of suitable clauses, wherein the one or more reservoirs are present on the embossed fabric. 68. The adhesive tape composition of clause 67, any other suitable clause, or any combination of suitable clauses, wherein the reservoir portion of the embossed fabric has a variable thickness. 69. The adhesive tape composition of clause 67, any other suitable clause, or any combination of suitable clauses, wherein the adhesive is present in one or more reservoirs of the embossed fabric. 70. An adhesive tape composition comprising: i) an embossed fabric; and ii) an adhesive in contact with one side of the embossed fabric, wherein the embossed fabric has a variable adhesive thickness. 71. The adhesive tape composition of clause 70, any other suitable clause, or any combination of suitable clauses, wherein the adhesive tape composition further comprises a releasable liner. [Example]

[0040] Example 1: Formation and Analysis of Adhesive Tape Compositions

[0048] An exemplary adhesive tape composition can be formed as follows: The silicone-treated side of an 80 lb basis weight SCK paper release liner was uniformly coated with an adhesive to a thickness of 3.5 mils using a steel-coated roller. This was air-dried for 15 minutes, then dried at 70°C for 15 minutes, followed by a final drying step at 121°C for 15 minutes. The dried adhesive on the liner was then laminated to a 75 gsm adhesive surface, where both sides were embossed polyurethane fabric, using a lamination pressure of 20 psa.

[0041]

[0049] The unique cross-sectional shape of the adhesive tape is formed at the interface between the dried adhesive and the embossed side of the fabric after the lamination step. After lamination to the fabric, the adhesive thickness varies along and across the coated web due to the viscoelastic nature of the adhesive, which conforms to the embossed surface structure of the fabric.

[0042]

[0050] Four prior art adhesive tape compositions that do not include fabric embossing were analyzed, as shown in Table 1.

[0043] [Table 4]

[0044]

[0051] Three adhesive tape compositions containing fabric embossing were analyzed, as shown in Table 2.

[0045] [Table 5]

[0046]

[0052] Various adhesive tape compositions were analyzed to evaluate bond depth (for the embossed and non-embossed sides, if applicable), bonded area thickness, unbonded area, surface roughness, and fiber diameter. The analytical results are shown in Table 3.

[0047] [Table 6]

[0048]

[0053] Adhesive Tape Compositions 5 and 6 (i.e., those having embossed fabric on the front and back sides exhibiting variable adhesive thickness) demonstrated improved skin wear time compared to prior art Samples 1 to 4. Adhesive Tape Compositions 5 and 6 also demonstrated improved support of the medical device when the medical device was attached to the skin of a user using these adhesive tape compositions.

[0049]

[0054] Figure 6 shows the variable adhesive thickness in view of the embossed pattern on Sample 5 (i.e., 3619A). In contrast, Figures 7 and 8 show the uniform adhesive thickness of Samples 3 and 4 (i.e., Avery, MED5740 and Dermamed, DM2275), respectively.

[0050] Example 2: Measurement procedure for adhesive tape composition

[0055] This example provides an exemplary method for determining the depth and other characteristics of the embossed area of ​​the fabric of adhesive tape composition.The equipment for this example includes Hitachi S-3000N scanning electron microscope (including PCI Quartz software), Denton Vacuum Desk V-Coater with gold / palladium target, Max Pro Freeze Spray, aluminum general-purpose single-edge blade and double-slotted vice holder.

[0051]

[0056] The preparation steps for this embodiment include:

[0052]

[0057] 1. After freezing a small piece of adhesive tape composition sample, carefully cut a cross section of the sample, making sure to cut through the center of the embossed area.

[0053]

[0058] 2. Place the cross-sectioned sample in the double slotted vise holder with the cut side facing up. Repeat for any additional samples.

[0054]

[0059] 3. Place the holder in the vacuum coater and coat the sample for 45 seconds, then remove after coating is complete.

[0055]

[0060] The analysis steps in this example include:

[0056]

[0061] 1. Place the coated sample in the SEM.

[0057]

[0062] 2. Once the SEM has reached the appropriate pressure, turn on the beam and set the sample to the following parameters: - Working distance = 15.8 mm - Acceleration voltage = 15kv - Magnification=120x - Scale = 300 μm

[0058]

[0063] 3. Obtain enough images to make the necessary measurements. Two or more areas from a single sample are required to complete the measurements.

[0059]

[0064] 4. Once all images were acquired, the following measurements were taken using the calibrated software: All measurements were taken at the center of the embossed area. - embossing depth on the embossed side and on the opposite side - Thickness of the bridge

[0060] Example 3: Measurement and analysis of adhesive tape composition

[0065] This example provides an analysis of an adhesive tape composition according to the procedure of Example 2. Various measurements of the adhesive tape composition were performed on the element shown in the SEM image of FIG.

[0061]

[0066] In particular, the following measurements were made on exemplary adhesive tape compositions of the present disclosure (see FIG. 3).

[0062] [Table 7]

[0063]

[0067] The first exemplary adhesive tape composition (10 samples, white fabric) was analyzed under a microscope (WD 15.8 mm, 15 kV, x120, 300 μm scale). The thickness values ​​of each element were measured and are shown in Table 5.

[0064] [Table 8]

[0065]

[0068] The second exemplary adhesive tape composition (10 samples, tan fabric) was analyzed under a microscope (WD 15.8 mm, 15 kV, x120, 300 μm scale). The thickness values ​​for each element were measured and are shown in Table 6.

[0066] [Table 9]

[0067]

[0069] A summary of the analytical results for the seven exemplary adhesive tape compositions evaluated is provided in Table 7.

[0068] [Table 10]

[0069]

[0070] In comparison with the exemplary pressure-sensitive adhesive tape compositions shown in the SEM images of Figures 2 and 3, SEM images of prior art compositions 3M9907T and 3M9907W are shown in Figures 4 and 5, respectively. As shown in Figure 4, prior art composition 3M9907T has a uniform thickness of fabric and adhesive. As shown in Figure 5, prior art composition 3M9907W also has a uniform thickness of fabric and adhesive. These prior art compositions do not provide the improvements observed with the pressure-sensitive adhesive tape compositions of the present disclosure.

[0070] Example 4: Measurement of Embossing Depth of Exemplary Fabrics

[0071] This example provides an analysis of the embossing depth of fabric. Exemplary embossed nonwoven fabric samples can be evaluated. The equipment used in this example included a Hitachi S-3000N scanning electron microscope with PCI Quartz software, a Denton Vacuum Desk V-Coater with a gold / palladium target, Max Pro Freeze Spray, an aluminum commercial single-edge blade, and a double-slotted vise holder.

[0071]

[0072] Fabric samples are taken from the center of the web of the fabric roll at the beginning, middle, and end of the production process. A small piece of the sample is frozen by spraying Max Pro Freeze Spray directly onto the piece of fabric to be analyzed. Immediately after spray freezing, the sample is ready for further use.

[0072]

[0073] The cross section of the sample is then cut with a razor, making sure to cut through the center point of the embossed area. The dashed line in Figure 9 indicates the line to be cut.

[0073]

[0074] Place the cross-sectioned sample, cut side up, in a double-slotted vise holder and repeat for additional samples. Place the holder in the vacuum coater. Coat the sample for 45 seconds and then remove once coating is complete.

[0074]

[0075] Place the coated sample into the SEM chamber for testing. Once the SEM chamber has reached the appropriate pressure, turn on the beam and set the sample to the following parameters: Working distance = 15.8 mm Accelerating voltage = 15 kV SEM magnification=XL20 Scale = 300 μm

[0075]

[0076] To make the necessary measurements, approximately 10 images are acquired per sample, often capturing two or more areas of the sample to complete the measurements. An example of an original image is shown in Figure 10.

[0076]

[0077] After all images are acquired, the embossing depth is measured using calibrated software. All measurements are taken at the center of the embossed area using the following steps:

[0077]

[0078] 1. Referring to Figure 11, draw a line 1 between the two highest points on the fabric surface on either side of the embossed area. Ignoring individual stray fibers and loops, locate the embossed area.

[0078]

[0079] 2. Refer to Figure 12 and visually identify the midpoint of the embossed area. Draw line 2 starting from the midpoint of the embossed area. Line 2 does not need to be perpendicular to line 1, but it must start from the midpoint of the embossed area. The length of line 2 is the emboss depth (measured in microns).

[0079]

[0080] 3. Record each individual measurement of embossing depth and report the average of 30 measurements.

Claims

1. An adhesive tape composition comprising: i) a fabric; and ii) an adhesive.

2. The adhesive tape composition according to claim 1 , wherein the fabric is a nonwoven fabric.

3. The adhesive tape composition of claim 1 further comprising a releasable liner.

4. The adhesive tape composition according to claim 1 , wherein the fabric comprises polyurethane or a polyurethane resin.

5. 10. The adhesive tape composition of claim 1, wherein the fabric comprises a polyurethane resin mixed with one or more additives.

6. 6. The pressure-sensitive adhesive tape composition according to claim 5, wherein the additive is selected from the group consisting of a colorant, a dye, a pigment, an ultraviolet (UV) blocker, a UV absorber, or a functional filler, a polymer, and any combination thereof.

7. 10. The adhesive tape composition of claim 1, wherein the fabric comprises a front side and a back side, and the adhesive extends between and interconnects the back side of the fabric and the releasable liner.

8. 2. The adhesive tape composition of claim 1, wherein the fabric is an embossed fabric, the embossed fabric comprising a non-embossed portion and an embossed portion.

9. 9. The adhesive tape composition of claim 8, wherein one or more reservoirs are present on the embossed fabric.

10. 10. The adhesive tape composition of claim 9, wherein the reservoir portion of the embossed fabric has a variable thickness.

11. 10. The adhesive tape composition of claim 9, wherein the adhesive is present within the one or more reservoirs of the embossed fabric.

12. An adhesive tape composition comprising: i) a fabric; and ii) a means for connecting a medical device to a user.

13. 13. The adhesive tape composition of claim 12, wherein the connecting means comprises an adhesive.

14. 13. The adhesive tape composition of claim 12, wherein said connecting means is adapted to remain on said user without becoming dislodged for at least seven days.

15. 13. The adhesive tape composition of claim 12, wherein said connecting means is adapted to remain on said user without becoming dislodged for at least 14 days.

16. 13. The adhesive tape composition of claim 12, wherein the fabric comprises a front side and a back side, and the adhesive extends between and interconnects the back side of the fabric and the releasable liner.

17. 17. The adhesive tape composition of claim 16, wherein the fabric is embossed on the front side and the back side to provide an embossed fabric, the embossed fabric comprising a non-embossed portion and an embossed portion.

18. 18. The adhesive tape composition of claim 17, wherein one or more reservoirs are present on the embossed fabric.

19. 20. The adhesive tape composition of claim 18, wherein the reservoir portion of the embossed fabric has a variable thickness.

20. 20. The adhesive tape composition of claim 18, wherein the adhesive is present within the one or more reservoirs of the embossed fabric.

Images