Article and sensor system

Abstract

An article wearable on the skin of a user is provided. The article includes a base film including a first base major surface, and a second base major surface opposite the first base major surface and facing a skin of a user. The base film further includes a through opening extending between the first base major surface and the second base major surface. The base film further includes a base adhesive layer including a base adhesive configured to removably attach the base film to a user's skin. The through opening is configured to align with the sensor when the article is placed on the sensor and to at least partially and removably receive the sensor through the through opening. The article further includes a cover film disposed at least partially on the base film. The cover film is at least partially attached to the first base major surface of the base film.

Description

TECHNICAL FIELD

[0001] The present disclosure relates generally to an article that is capable of being worn on a user's skin. The present disclosure further relates to a sensor system that includes an article that is capable of being worn on a user's skin. BACKGROUND

[0002] Articles that include an adhesive layer are commonly found in a variety of applications. Such articles can be held against an external surface by means of the adhesive layer. For example, medical diagnostic devices are often held against a user's skin by an adhesive layer. Such devices need to be attached to an external surface that is non-rigid and generally not flat, such as a user's skin. Additionally, such devices tend to get caught on external obstacles and come off the user's skin, for example by edge lifting. Once the device has fallen off the user, diagnostic data can not be collected and a replacement device can not always be available. Furthermore, the original device can not be reattached due to sterility issues or loss of functionality. Thus, it can be desirable for an article that can last longer on an external surface, such as a user's skin. Furthermore, it can be desirable for an article to have improved wearability on an external surface. SUMMARY

[0003] In a first aspect, the present disclosure provides an article that is capable of being worn on a user's skin. The article includes a base film that includes a first base major surface and a second base major surface opposite the first base major surface and facing the user's skin. The base film further includes a through-going opening extending between the first base major surface and the second base major surface. The base film further includes a base adhesive layer forming the second base major surface and including a base adhesive configured to removably attach the base film to the user's skin. The through-going opening is configured to align with a sensor when the article is placed on the sensor attached to the user's skin and to at least partially and removably receive the sensor through the through-going opening. The article is separable from the sensor. The article further includes a cover film at least partially disposed on the base film. The cover film includes a first cover major surface and a second cover major surface opposite the first cover major surface and at least partially attached to the first base major surface of the base film. The base film and the cover film are configured to removably and at least partially enclose the sensor such that the article is removable from the user's skin while the sensor remains attached to the user's skin.

[0004] In a second aspect, the present disclosure provides a sensor system comprising a sensor attached to a user's skin. The sensor system further comprises an article of the first aspect of the present disclosure. The article is separate from the sensor and is removably attached to the user's skin. Upon placement of the article on the sensor, the through opening of the base film at least partially and removably receives the sensor through the through opening. The article removably and at least partially encloses the sensor to enable the article to be removed from the user's skin while the sensor remains attached to the user's skin. BRIEF DESCRIPTION OF DRAWINGS

[0005] The exemplary embodiments disclosed herein can be more completely understood in consideration of the following detailed description in connection with the following drawings, in which like reference numerals indicate like parts. The drawings are not necessarily to scale. The use of the same numbers in different figures indicates the same or like components. It should be understood that the use of numbers in certain figures is merely to illustrate a component in a given figure, and does not limit the component's use in other figures.

[0006] Figure 1 is a schematic perspective view of a sensor system according to one embodiment of the present disclosure;

[0007] Figure 2 is a schematic perspective view of a sensor system according to one embodiment of the present disclosure Figure 1 is a schematic top view of the sensor system of

[0008] Figure 3 is a schematic perspective view of a sensor system according to one embodiment of the present disclosure Figure 1 is a schematic side view of the sensor system of

[0009] Figure 4 is a schematic perspective view of a sensor system according to one embodiment of the present disclosure Figure 1 is a schematic cross-sectional side view of the sensor system of

[0010] Figure 5 is a schematic cross-sectional side view of a sensor system according to another embodiment of the present disclosure;

[0011] Figure 6 is a schematic cross-sectional side view of a sensor system according to another embodiment of the present disclosure;

[0012] Figure 7 is a schematic cross-sectional side view of a sensor system according to another embodiment of the present disclosure; and

[0013] Figure 8 is a schematic cross-sectional side view of a sensor system according to another embodiment of the present disclosure; and

[0014] Figure 9is a schematic top view of a sensor system according to another embodiment of the present disclosure. DETAILED DESCRIPTION

[0015] In the following description, reference is made to the accompanying drawings which form a part hereof, and in which is shown by way of illustration various embodiments. It is understood that other embodiments can be utilized and that

[0016] As used herein, all numbers should be considered to be modified by the term "about." As used herein, "one," "the," and "at least one" or "one or more" can be used interchangeably.

[0017] As used herein as a modifier to a property or attribute, the term "substantially" means that the property or attribute is largely if not totally the characteristic, but does not need to be perfect (e.g., + / - 20% for a quantifiable property).

[0018] The term "essentially" means highly close (e.g., + / - 10% for a quantifiable property), but again does not require absolute precision or perfect match, unless specifically defined otherwise.

[0019] The term "about" means highly close (e.g., + / - 5% for a quantifiable property), but again does not require absolute precision or perfect match, unless specifically defined otherwise.

[0020] As used herein, the terms "first" and "second" are used as identifiers. Thus, such terms should not be interpreted as limiting the present disclosure. The terms "first" and "second" can be interchanged in embodiments of the present disclosure when used in connection with a feature or element.

[0021] As used herein, "at least one of A and B" should be interpreted as meaning "A only, B only, or both A and B."

[0022] As used herein, expressions of ranges of numbers by endpoints include all numbers including the endpoints (e.g., 1 to 5 includes 1, 1.5, 2, 2.75, 3, 3.80, 4, 5, etc.).

[0023] As used herein, when a first material is referred to as being "the same as" or "similar to" a second material, at least 90% by weight of the first material and the second material are the same, and any variation between the first material and the second material includes less than about 10% by weight of each of the first material and the second material.

[0024] The terms "attached," "connected," "coupled," and variations thereof, are used broadly and encompass both direct and indirect physical connections, or couplings, made by one or more additional components between two or more elements. For example, a first component can be coupled to a second component by direct connection, or by connection through a third component. In some examples, in some contexts, coupled, connected, and attached can also include mechanical, thermal, electrical, or chemical coupling (such as a chemical bond).

[0025] As used herein, the terms "layer," "sheet," and "film," or variations thereof, are used to describe components having a small thickness relative to their length and width.

[0026] As used herein, the term "film" generally refers to a material having a very high length or width to thickness ratio. Films have two major surfaces defined by length and width. Films are often flexible and can be used in a variety of applications, including displays. Films can also have a thickness or material composition such that they are semi-rigid or rigid. The films described in the present disclosure can be composed of a variety of polymeric materials. Films can be single layer, multi-layer, or a blend of different polymers.

[0027] The present disclosure relates to an article that is capable of being worn on a user's skin. The article includes a base film including a first base major surface, and a second base major surface opposite the first base major surface and facing the user's skin. The base film further includes a through-going opening extending between the first base major surface and the second base major surface. The base film further includes a base adhesive layer forming the second base major surface and including a base adhesive configured to removably attach the base film to the user's skin. The through-going opening is configured to align with a sensor when the article is placed on the sensor attached to the user's skin, and to at least partially and removably receive the sensor through the through-going opening. The article is separable from the sensor. The article further includes a cover film at least partially disposed on the base film. The cover film includes a first cover major surface, and a second cover major surface opposite the first cover major surface and at least partially attached to the first base major surface of the base film. The base film and the cover film are configured to removably and at least partially enclose the sensor, such that the article is removable from the user's skin while the sensor remains attached to the user's skin.

[0028] As the cover film is at least partially disposed on the base film, the cover film can protect the base film from environmental factors (such as dirt, moisture, etc.) that can otherwise adversely affect the functioning of the sensor. In addition, the cover film can also protect the base film from being caught on external objects (such as clothing) and thereby prevent the base film from peeling off from the external surface (e.g., the user’s skin) to which the article can be attached. Longer periods of attachment of the article to the skin can enhance the user experience and can result in less landfill waste.

[0029] Additionally, as the article is capable of being removed from the user’s skin while the sensor remains attached to the user’s skin, the article can be easily replaced with a new article when needed. In this way, the sensor remains attached to the user’s skin during removal of the article from the user’s skin. In some cases, even if the article is accidentally peeled off, there is no need to attach a new sensor to the user’s skin, as the sensor remains attached to the user’s skin during removal of the article from the user’s skin. Such a device can enhance the overall user experience and can aid in the wearability of the article on the user’s skin. Thus, the article of the present disclosure can provide highly compliant attachment with longer periods of attachment and better user experience.

[0030] Reference is now made to the drawings, Figure 1 is a schematic perspective view of a sensor system 50 according to one embodiment of the present disclosure. Figure 2 is a schematic top view of a sensor system 50 according to one embodiment of the present disclosure. Figure 3 is a schematic side view of a sensor system 50 according to one embodiment of the present disclosure. Figure 4 is a schematic cross-sectional side view of a sensor system 50 according to one embodiment of the present disclosure. The sensor system 50 can comprise a medical diagnostic device. Reference is made to Figures 1 to 4 The sensor system 50 comprises a sensor 102 attached to the skin 52 of a user 54. The sensor 102 can be adhesively attached to the skin 52 of the user 54.

[0031] In some embodiments, the sensor 102 can collect physiological data from the skin 52 of the user 54. In some embodiments, the sensor 102 can collect information related to one or more of calories burned, steps taken, activity level, sleep patterns, and other parameters. In some embodiments, the sensor 102 can collect one or more of the following data: skin surface temperature data of the user 54, core body temperature data of the user 54, motion or inactivity data of the user 54, body angle data of the user 54, heart rate and / or ECG data of the user 54, and respiration information of the user 54. In some embodiments, the sensor 102 can utilize software algorithms to process the collected data and determine or provide an indication of one or more of sleep quality and quantity, activity level, steps taken, calories consumed, and the like.

[0032] In some embodiments, the sensor 102 can include multiple sensors and / or multiple sensor types that collect data. In some embodiments, the sensor 102 can include means to enable wireless transmission of the collected data to an external device, such as a computer or mobile device. In some embodiments, the sensor 102 can continuously or intermittently wirelessly transmit the collected data to an external device so that the collected data can be viewed or displayed in real-time on the external device. In some embodiments, the sensor 102 can also utilize a cloud-based infrastructure to store and present the collected data and / or processed data.

[0033] The sensor system 50 further includes an article 100 that is capable of being worn on the skin 52 of the user 54. The article 100 is separate from the sensor 102 and removably attached to the skin 52 of the user 54. As shown in FIG. 1, the article 100 includes a base film 104 that includes a first base major surface 106 and a second base major surface 108 opposite the first base major surface 106 and facing the skin 52 of the user 54. Figure 4 In some embodiments, the article 100 can include a sensor 102 that is capable of collecting physiological data from the skin 52 of the user 54. In some embodiments, the sensor 102 can be embedded within the article 100, such as within the base film 104. In some embodiments, the sensor 102 can be embedded within the article 100 such that the sensor 102 is in contact with the skin 52 of the user 54 when the article 100 is worn on the skin 52 of the user 54.

[0034] The base film 104 further includes a through opening 110 extending between the first base main surface 106 and the second base main surface 108. The through opening 110 is configured to align with the sensor 102 when the article 100 is placed on the sensor 102 attached to the skin 52 of the user 54, and to at least partially and removably receive the sensor through the through opening. In other words, when the article 100 is placed on the sensor 102, the through opening 110 of the base film 104 at least partially and removably receives the sensor 102 through the through opening. In some embodiments, the base film 104 is annular such that the through opening 110 is centrally located within the base film 104. In other embodiments, the base film 104 may have a rectangular, square, or polygonal shape, wherein the through opening 110 is centrally located within the base film 104.

[0035] The base film 104 further includes a base adhesive layer 112 forming a second base primary surface 108 and including a base adhesive 114 configured to removably attach the base film 104 to the skin 52 of the user 54. The base adhesive layer 112 may be breathable and conformable to the skin 52 of the user 54. In some embodiments, the base adhesive 114 is an acrylic adhesive. Specifically, the base adhesive 114 may be an adhesive acrylic adhesive. In some embodiments, the base adhesive 114 may be a pressure-sensitive adhesive or a stretch-peel adhesive.

[0036] exist Figure 4 In the illustrated embodiment, the base film 104 further includes a backing layer 116 attached to the base adhesive layer 112. The backing layer 116 comprises a spunlace polyester nonwoven material. In other embodiments, the backing layer 116 may comprise a stretchable spunlace fabric. It should be understood that various other materials may be acceptablely used for the backing layer 116. For example, the backing layer 116 may comprise knitted polyester. The backing layer 116 forms a first base primary surface 106 of the base film 104. A through opening 110 extends through the backing layer 116 and the base adhesive layer 112.

[0037] In some embodiments, the article 100 further includes a release liner 118 attached to and covering the base adhesive 114 of the base film 104 in a releasable manner. The release liner 118 is removed from the base adhesive 114 prior to removably attaching the base adhesive 114 to the skin 52 of the user 54. The release liner 118 can be a film formed from paper; rubber; various foils such as aluminum foil, copper foil, stainless steel foil, iron foil, hard aluminum foil, tin foil, titanium foil, gold foil; films made from various resins such as polyethylene, polypropylene, polyvinyl chloride, polyester, polyamide; foams, such polyurethane foams, vinyl foams, polyethylene foams, styrene foams; nonwoven fabrics; woven fabrics; felt, or laminates of these materials with polymeric materials can be used as the base material.

[0038] In some embodiments, the release liner 118 can include a microstructured surface. The release liner 118 remains attached to the base film 104 during shipping and processing, and is removed only when the article 100 is to be used. In this way, the base film 104 is protected until the article 100 is to be used. A wide variety of microstructured release liners are suitable. Typically, the microstructured release liner 118 is prepared by embossing. This means that the release liner 118 has an embossable surface that is contacted with a structuring tool under the application of pressure and / or heat to form an embossed surface.

[0039] The article 100 further includes a cover film 120 disposed at least partially on the base film 104. The cover film 120 includes a first cover major surface 122 and a second cover major surface 124 opposite the first cover major surface 122. The second cover major surface 124 is at least partially attached to the first cover major surface 106 of the base film 104. In the illustrated embodiment of FIG. 1, the first cover major surface 122 of the cover film 120 at least partially forms an outer surface of the article 100. Figure 4 In the illustrated embodiment of FIG. 1, the first cover major surface 122 of the cover film 120 at least partially forms an outer surface of the article 100. The cover film 120 includes a base cover layer 121 that forms the first cover major surface 122 of the cover film 120.

[0040] Further, the cover film 120 is a printable aesthetically pleasing film. Specifically, the cover film 120 is a printable aesthetically pleasing film having a matte finish. Specifically, the base cover layer 121 is a printable aesthetically pleasing film. The first cover major surface 122 can include at least one of an identification, a serial number, text, a graphic design, and a graphic image. In some embodiments, the cover film 120 includes a polyurethane. In other embodiments, the cover film 120 can include a polyurethane foam to provide cushioning, moldability, and support to the article 100. In some embodiments, the cover film 120 further includes a raised central portion 126 aligned with the through opening 110, and a peripheral portion 128 surrounding the raised central portion 126 and attached to the base film 104. The raised central portion 126 and the peripheral portion 128 together enclose and surround the sensor 102. In some embodiments, the raised central portion 126 can include a perforation (not shown). The perforation can extend from the first cover major surface 122 to the second cover major surface 124 to create a path that allows any moisture or sweat near the sensor 102 to flow out. In some embodiments, the base adhesive layer 114 can include a microstructured surface (not shown) having at least one channel extending to at least one boundary of the base adhesive layer 114. Such a microstructured surface is also provided in U.S. Patent Publication No. 2022 / 0257424. The at least one channel can permit fluid, such as moisture or sweat, to be transported from the sensor 102 to the first cover major surface 122. Alternatively, in some embodiments, the cover film 120 can not have a through opening. Further, when the release liner 118 is removed prior to applying the article 100 to the skin 52 of the user 54, the corresponding opposing microstructured features are imparted to the base adhesive layer 114.

[0041] In Figure 4 the illustrated embodiment, the cover film 120 further includes a lower adhesive layer 130 forming the second cover major surface 124. The lower adhesive layer 130 is attached to the base cover layer 121. The lower adhesive layer 130 includes a lower adhesive 132 that adhesively bonds the cover film 120 with the base film 104. Specifically, in Figure 4 the illustrated embodiment, the lower adhesive 132 adhesively bonds the second cover major surface 124 of the cover film 120 with the first base major surface 106 of the base film 104. The base film 104 and the cover film 120 are configured to removably and at least partially enclose the sensor 102 such that the article 100 can be removed from the skin 52 of the user 54 while the sensor 102 remains attached to the skin 52 of the user 54. In other words, the article 100 removably and at least partially encloses the sensor 102 such that the article 100 can be removed from the skin 52 of the user 54 while the sensor 102 remains attached to the skin 52 of the user 54.

[0042] Because the cover film 120 is disposed at least partially on the base film 104, the cover film 120 can protect the base film 104 from environmental factors such as dirt, moisture, and the like that can otherwise adversely affect the functioning of the sensor 102. In addition, the cover film 120 can also protect the base film 104 from being caught on external objects such as clothing, thereby preventing the base film 104 from peeling off from the outer surface to which the article 100 can be attached, e.g., the skin 52 of the user 54. Longer periods of attachment of the article 100 to the skin 52 can enhance the user experience and can result in less landfill waste.

[0043] Additionally, because the article 100 can be removed from the skin 52 of the user 54 while the sensor 102 remains attached to the skin 52 of the user 54, the article 100 can be easily replaced with a new article when needed. In this way, the sensor 102 remains attached to the skin 52 of the user 54 during removal of the article 100 from the skin 52 of the user 54. In some cases, even if the article 100 is peeled off incorrectly, there is no need to attach a new sensor to the skin 52 of the user 54 because the sensor 102 remains attached to the skin 52 of the user 54 during removal of the article 100 from the skin 52 of the user 54. Such an arrangement can enhance the overall user experience and can facilitate the wearability of the article 100 on the skin 52 of the user 54. Thus, the article 100 can provide highly compliant attachment with longer periods of attachment and better user experience.

[0044] With continued reference to Figure 4 , the article 100 further includes an intermediate film 134 disposed between the cover film 120 and the base film 104. The intermediate film 134 includes a first intermediate major surface 136 adhesively bonded to the second cover major surface 124 of the cover film 120. In particular, the lower adhesive 132 adhesively bonds the cover film 120 to the intermediate film 134. Thus, the lower adhesive 132 adhesively bonds the cover film 120 to each of the intermediate film 134 and the base film 104. The intermediate film 134 further includes a second intermediate major surface 138 opposite the first intermediate major surface 136 and aligned with the through opening 110 of the base film 104. The second intermediate major surface 138 is adhesive-free and is configured to removably engage the sensor 102 such that the intermediate film 134 can be removed from the sensor 102 while the sensor 102 remains attached to the skin 52 of the user 54. Because of the adhesive-free second intermediate major surface 138, none of the films of the article 100 remain attached to the sensor 102 when the article 100 is removed from the skin 52 of the user 54. Thus, the article 100 can be easily replaced with a new article when needed without moving the sensor 102 attached to the skin 52 of the user 54. In Figure 4In the illustrated embodiment of FIG. 1, the intermediate film 134 includes a base intermediate layer 135 that forms a first intermediate major surface 136 and a second intermediate major surface 138 opposite the first intermediate major surface 136. In some embodiments, the intermediate film 134 can include perforations (not shown) that extend from the first intermediate major surface 136 to the second intermediate major surface 138.

[0045] In some embodiments, the second intermediate major surface 138 of the intermediate film 134 is substantially the same shape and size as the cross-sectional shape and size of the sensor 102. In particular, the length and width of the intermediate film 134 are substantially the same as the corresponding length and width of the sensor 102. Further, in some embodiments, the second intermediate major surface 138 of the intermediate film 134 is substantially the same shape and size as the cross-sectional shape and size of the through-opening 110. Thus, the second intermediate major surface 138 of the intermediate film 134 can be readily aligned with the sensor 102 and the through-opening 110. In some embodiments, the intermediate film 134 includes polyethylene. In some embodiments, the intermediate film 134 is a low-density polyethylene film. The intermediate film 134 can have a thickness between 0.1 millimeter (mm) and 0.15 mm. The intermediate film 134 can have a translucent matte finish. The intermediate film 134 can be made of a water-resistant and heat-sealable material.

[0046] Figure 5 is a schematic cross-sectional side view of a sensor system 60 according to another embodiment of the present disclosure. The sensor system 60 is substantially similar to the sensor system 50 of Figure 4 , with like components being referred to by like numbers. However, the sensor system 60 includes an article 200 (rather than the article 100 shown in Figure 4 ). The article 200 is substantially similar to the article 100 of Figure 4 , with like components being referred to by like numbers. The functional advantages of the article 200 are substantially the same as the functional advantages of the article 100 of Figure 4 .

[0047] In the article 200, the base film 104 does not include a backing layer (i.e., the backing layer 116 shown in Figure 4 ). In the article 200, the base film 104 is a double-coated adhesive film such that the base adhesive layer 112 further forms a first base major surface 106 of the base film 104. Thus, in the article 200, the base adhesive layer 112 forms each of the first base major surface 106 and the second base major surface 108.

[0048] Further, the article 200 includes a backing layer 216 that is substantially similar to the backing layer 116 of Figure 4The intermediate film 134 of the article 100 shown in FIG. 1 is substantially similar to the intermediate film 134'. However, the intermediate film 134' further includes an intermediate adhesive layer 140 forming a first intermediate major surface 136. The intermediate adhesive layer 140 is attached to the base intermediate layer 135. The base intermediate layer 135 forms a second intermediate major surface 138. In some embodiments, the intermediate adhesive layer 140 can include a microstructured surface (not shown) having at least one channel extending to at least one boundary of the intermediate adhesive layer 140.

[0049] Further, the article 200 includes a cover film 120' that is substantially similar to the cover film 120 shown in the article of Figure 4 Further, the article 200 includes a cover film 120' that is substantially similar to the cover film 120 shown in the article of Figure 4 the intermediate adhesive layer 130 shown in FIG. 1). In the article 200, the cover film 120' includes an upper adhesive layer 150 forming a first cover major surface 122. The intermediate adhesive layer 140 includes an intermediate adhesive 142 that adhesively bonds the intermediate film 134' to a second cover major surface 124 of the cover film 120'. Thus, the intermediate adhesive 142 adhesively bonds the intermediate film 134' to the cover film 120'.

[0050] The article 200 further includes a top film 144. The top film 144 includes a first top major surface 146 that at least partially forms an outer surface of the article 200. The top film 144 further includes a second top major surface 148 opposite the first top major surface 146 and attached to the first cover major surface 122 of the cover film 120'. Thus, the first cover major surface 122 of the cover film 120' does not form an outer surface of the article 200. In some embodiments, the top film 144 is a printable aesthetically pleasing film. In particular, the top film 144 is a printable aesthetically pleasing film having a matte finish. The first top major surface 146 can include at least one of an identification, a serial number, text, a graphic design, and a graphic image. In some embodiments, the top film 144 includes a polyurethane. In other embodiments, the top film 144 can include a polyurethane foam to provide cushioning, moldability, and support to the article 200. In Figure 5 In the illustrated embodiment of the article 200, the top film 144 includes a base top layer 145 forming the first top major surface 146 and the second top major surface 148 opposite the first top major surface 146. In some embodiments, the base top layer 145 includes a polyurethane.

[0051] The upper adhesive layer 150 includes an upper adhesive 152 that adhesively bonds the cover film 120' with the second top major surface 148 of the top film 144. Thus, the second top major surface 148 is adhesively attached with the first cover major surface 122 of the cover film 120' by the upper adhesive 152 of the upper adhesive layer 150. Further, in the article 200, the second cover major surface 124 is adhesive-free. In some embodiments, the cover film 120' includes a closed-cell foam. In particular, the base cover layer 121 of the cover film 120' includes a closed-cell foam. In the article 200, the cover film 120' can have a thickness between 0.4 millimeters (mm) and 0.8 mm.

[0052] Figure 6 is a schematic cross-sectional side view of a sensor system 62 according to another embodiment of the present disclosure. The sensor system 62 is substantially similar to the sensor system 60 of Figure 5 , with like components being referred to by like numbers. However, the sensor system 62 includes an article 300 (instead of the article 200 shown in Figure 5 ). The article 300 is substantially similar to the article 200 of Figure 5 , with like components being referred to by like numbers. The functional advantages of the article 300 are substantially the same as the functional advantages of the article 200 of Figure 5 .

[0053] In the article 300, there is no intermediate film (i.e., the intermediate film 134' shown in Figure 5 ). Further, in the article 300, the second cover major surface 124 is adhesive-free and is configured to removably engage the sensor 102 such that the cover film 120' can be removed from the sensor 102 while the sensor 102 remains attached to the skin 52 of the user 54.

[0054] Figure 7 is a schematic cross-sectional side view of a sensor system 64 according to another embodiment of the present disclosure. The sensor system 64 is substantially similar to the sensor system 60 of Figure 5 , with like components being referred to by like numbers. However, the sensor system 64 includes an article 400 (instead of the article 200 shown in Figure 5 ). The article 400 is substantially similar to the article 200 of Figure 5 , with like components being referred to by like numbers. The functional advantages of the article 400 are substantially the same as the functional advantages of the article 200 of Figure 5 .

[0055] In the article 400, the base film 104 is not like the base film 104 shown in Figure 5The double-coated adhesive film in article 400 is substantially similar to the double-coated adhesive film shown in article 300. Thus, in article 400, the base adhesive layer 112 does not form the first base major surface 106 of the base film 104. The base film 104 in article 400 is substantially similar to the base film shown in article 100, where like components are referred to by like numbers. Figure 4 The double-coated adhesive film in article 400 is substantially similar to the double-coated adhesive film shown in article 300. Thus, in article 400, the base adhesive layer 112 does not form the first base major surface 106 of the base film 104. The base film 104 in article 400 is substantially similar to the base film shown in article 100, where like components are referred to by like numbers. Figure 4 The cover film 120 in article 400 is substantially similar to the cover film 120 shown in article 300, where like components are referred to by like numbers. However, the cover film 120 in article 400 further includes a top adhesive layer 152 that forms the second cover major surface 124. The top adhesive layer 152 is attached to the base cover layer 126. The base cover layer 126 forms the first cover major surface 122 of the cover film 120. The top adhesive layer 152 includes a top adhesive 154 that adhesively bonds the cover film 120 to the top film 144'. Figure 5 The cover film 120 in article 400 is substantially similar to the cover film 120 shown in article 300, where like components are referred to by like numbers. However, the cover film 120 in article 400 further includes a top adhesive layer 152 that forms the second cover major surface 124. The top adhesive layer 152 is attached to the base cover layer 126. The base cover layer 126 forms the first cover major surface 122 of the cover film 120. The top adhesive layer 152 includes a top adhesive 154 that adhesively bonds the cover film 120 to the top film 144'.

[0056] The top film 144' in article 400 is substantially similar to the top film 144 shown in article 300, where like components are referred to by like numbers. However, the top film 144' in article 400 further includes a top adhesive layer 154 that forms the second top major surface 148. The top adhesive layer 154 is attached to the base top layer 145. The base top layer 145 forms the first top major surface 146 of the top film 144'. The top adhesive layer 154 includes a top adhesive 156 that adhesively bonds the top film 144' to the first cover major surface 122 of the cover film 120. Figure 5 The top film 144' in article 400 is substantially similar to the top film 144 shown in article 300, where like components are referred to by like numbers. However, the top film 144' in article 400 further includes a top adhesive layer 154 that forms the second top major surface 148. The top adhesive layer 154 is attached to the base top layer 145. The base top layer 145 forms the first top major surface 146 of the top film 144'. The top adhesive layer 154 includes a top adhesive 156 that adhesively bonds the top film 144' to the first cover major surface 122 of the cover film 120.

[0057] Figure 8 is a schematic cross-sectional side view of a sensor system 66 according to another embodiment of the present disclosure. The sensor system 66 is substantially similar to the sensor system 64 of Figure 7 , where like components are referred to by like numbers. However, the sensor system 66 includes an article 500 (instead of the article 400 shown in Figure 7 ). The article 500 is substantially similar to the article 400 of Figure 7 , where like components are referred to by like numbers. The functional advantages of the article 500 are substantially the same as the functional advantages of the article 400 of Figure 7 . However, the article 500 includes an intermediate film 134 that is also shown in the article 100 of Figure 4 (instead of the intermediate film 134' shown in Figure 7 ).

[0058] Figure 9 is a schematic top view of a sensor system 68 according to an embodiment of the present disclosure. The sensor system 68 is substantially similar to the sensor system 50 of Figure 2 , where like components are referred to by like numbers. However, the sensor system 68 includes an article 600 (instead of the article 100 shown in Figure 2 ). The article 600 is substantially similar to the article 100 of Figure 2The article 100 is substantially similar, with common components referenced by the same numbers. However, in the article 600, the cover film 120 includes a plurality of slits 158 disposed proximate the periphery of the peripheral portion 128. In some examples, the plurality of slits 158 can be through cuts. The plurality of slits 158 can enhance fluid and moisture transport in the article 600. Further, the plurality of slits 158 can improve conformability when the article 600 is worn by the user 54. Such a plurality of slits 158 is also provided in U.S. Patent No. 10,940,049.

[0059] Unless otherwise indicated, all numbers expressing feature sizes, amounts and physical properties used in the specification and claims are to be understood as being modified in all instances by the term "about." Accordingly, unless otherwise indicated, the numerical parameters set forth in the foregoing description and associated claims are approximations. Variations to these numerical

[0060] While specific embodiments have been illustrated and described herein, it will be appreciated that various alternative and / or equivalent implementations can be substituted for the specific embodiments shown and described without departing from the scope of the disclosure. This application is intended to cover any adaptations or variations of the specific implementations discussed herein. Therefore, it is intended that the disclosure be limited only by the claims and the equivalents thereof.

Claims

1. An article wearable on a user's skin, the article comprising: a base film comprising a first base major surface, a second base major surface opposite the first base major surface and facing the user's skin, a through-going opening extending between the first base major surface and the second base major surface, and a base adhesive layer forming the second base major surface and comprising a base adhesive configured to removably attach the base film to the user's skin, wherein the through-going opening is configured to align with a sensor attached to the user's skin when the article is placed on the sensor and to at least partially and removably receive the sensor therethrough, wherein the article is separable from the sensor; and a cover film at least partially disposed on the base film, the cover film comprising a first cover major surface, and a second cover major surface opposite the first cover major surface and at least partially attached to the first base major surface of the base film; wherein the base film and the cover film are configured to removably and at least partially enclose the sensor such that the article is removable from the user's skin while the sensor remains attached to the user's skin.

2. The article of claim 1, further comprising a top film comprising a first top major surface at least partially forming an outer surface of the article, and a second top major surface opposite the first top major surface and attached to the first cover major surface of the cover film.

3. The article of claim 2, wherein the cover film comprises an upper adhesive layer forming the first cover major surface and comprising an upper adhesive bonding the cover film to the second top major surface of the top film; and wherein the second cover major surface is free of adhesive and is configured to removably engage the sensor such that the cover film is removable from the sensor while the sensor remains attached to the user's skin.

4. The article of claim 3, wherein the base film is a double-sided adhesive film such that the base adhesive layer further forms the first base major surface of the base film.

5. The article of claim 2, wherein the top film is a printable aesthetic film.

6. The article of claim 2, wherein the top film comprises polyurethane.

7. The article of claim 2, wherein the top film comprises a top adhesive layer forming the second top major surface and comprising a top adhesive bonding the top film to the first cover major surface of the cover film. ​ 8. The article of claim 1, further comprising an intermediate film disposed between the cover film and the base film, wherein the intermediate film comprises a first intermediate major surface adhesively bonded to the second cover major surface of the cover film, and a second intermediate major surface opposite the first intermediate major surface and aligned with the through opening of the base film, wherein the second intermediate major surface is free of adhesive and is configured to removably engage the sensor to enable the intermediate film to be removed from the sensor while the sensor remains attached to the user's skin.

9. The article of claim 8, wherein the cover film comprises a lower adhesive layer forming the second cover major surface and comprising a lower adhesive adhesively bonding the cover film to each of the intermediate film and the base film.

10. The article of claim 8, wherein the intermediate film comprises an intermediate adhesive layer forming the first intermediate major surface and comprising an intermediate adhesive adhesively bonding the intermediate film to the second cover major surface of the cover film.

11. The article of claim 8, wherein the intermediate film comprises polyethylene.

12. The article of claim 1, wherein the first cover major surface of the cover film at least partially forms an outer surface of the article.

13. The article of claim 12, wherein the cover film is a printable aesthetic film.

14. The article of claim 12, wherein the cover film comprises polyurethane.

15. The article of claim 1, wherein the base adhesive is an acrylic adhesive.

16. The article of claim 1, wherein the cover film comprises a closed cell foam.

17. The article of claim 1, wherein the base film comprises a backing layer attached to the base adhesive layer and comprising a spunlaced polyester nonwoven material, and wherein the backing layer forms the first base major surface of the base film.

18. The article of claim 1, further comprising a release liner peelably attached to and covering the base adhesive of the base film, wherein the release liner is removed from the base adhesive prior to removably attaching the base adhesive to the user's skin.

19. The article of claim 1, wherein the base film is annular such that the through opening is centrally disposed in the base film.

20. The article of claim 1, wherein the cover film further comprises a raised central portion aligned with the through opening, and a peripheral portion surrounding the raised central portion and attached to the base film.

21. A sensor system, the sensor system comprising: a sensor attached to a user's skin; and The article of claim 1, separate from the sensor, removably attached with the user's skin, wherein upon placement of the article over the sensor, the through opening of the base film at least partially and removably receives the sensor through the through opening, and wherein the article removably and at least partially encloses the sensor such that the article can be removed from the user's skin while the sensor remains attached with the user's skin.

Images