daytime heated blanket

Abstract

A warming blanket is provided that includes (i) a sweat absorbing layer (PAL), (ii) a metal coating layer (MCL), and (iii) a heat absorbing layer (TAL), where the MCL is located directly or indirectly between the PAL and the TAL. A method of making the warming blanket is also provided.

Description

[Technical Field]

[0001] Cross-reference of related applications This application claims priority under 35 U.S.C §119 of Chinese Patent Application No. 202210201117.0, filed on 3 March 2022, which is expressly incorporated herein in its entirety by reference.

[0002] Embodiments of the invention of the present disclosure relate generally to a heated blanket (for example, for daytime use), which comprises (i) a sweat-absorbing layer (PAL), (ii) a metal coating layer (MCL), and (iii) a heat-absorbing layer (TAL), wherein the MCL is located directly or indirectly between the PAL and the TAL. Methods for manufacturing a heated blanket are also provided. [Background technology]

[0003] Metallized materials, such as metallized blankets, conventionally consist of a metal coating applied to a base material such as a nonwoven fabric or film. Such metallized materials provide a mechanism that, for example, greatly retains the user's body heat. In this regard, metallized materials (also known, for example, space blankets, Mylar blankets, emergency blankets, safety blankets, thermal blankets, etc.) consist of a thin plastic film or nonwoven fabric coated with a heat-reflective metal coating. Ideally, the metallized material reflects approximately 90% of the user's body heat to reduce heat loss from the user's body.

[0004] One of the drawbacks of some metallized materials is their lack of breathability and / or flexibility, as well as their inability to be adapted for use in specific environments. In this regard, when such metallized blankets are applied to retain body heat, a desirable level of vapor permeability and / or flexibility (e.g., flexibility that easily conforms to the user's body) may also be required. [Overview of the project] [Problems that the invention aims to solve]

[0005] This invention was made to solve the problems of the above-mentioned conventional technology. [Means for solving the problem]

[0006] One or more embodiments of the present invention may address one or more of the problems described above. Some embodiments of the present invention provide a heated blanket (for example, for outdoor and / or nighttime use) which comprises (i) a sweat-absorbing layer (PAL), (ii) a metal coating layer (MCL), and (iii) a heat-absorbing layer (TAL), wherein the MCL is located directly or indirectly between the PAL and the TAL.

[0007] In another aspect, the present invention provides a method for manufacturing a heated blanket (for example, for outdoor and / or daytime use), the method comprising: (i) preparing a heat-absorbing layer (TAL); (ii) depositing a metal coating layer (MCL) directly on the TAL; (iii) preparing or forming a sweat-absorbing layer (PAL); and (iv) bonding the PAL with the MCL to realize a heated blanket.

[0008] The present invention will be described in more detail below with reference to the accompanying drawings, which show some, but not all, embodiments of the invention. In fact, the present invention may be carried out in a variety of forms and should not be construed as being limited to the embodiments described herein, but rather these embodiments are provided to satisfy the legal requirements to which this disclosure is applicable. Similar reference numerals refer to similar elements throughout. The drawings are as follows. [Brief explanation of the drawing]

[0009] [Figure 1] This document shows a heated blanket according to several embodiments of the present invention. [Figure 2] The following shows a sweat-absorbing layer (PAL) containing multiple through-holes according to several embodiments of the present invention. [Figure 3]Figure 2 shows a PAL (polycrystalline aluminum) layer placed over a metal coating layer (MCL) according to several embodiments of the present invention, with the MCL visible through multiple through-holes. [Modes for carrying out the invention]

[0010] The present invention will be described in more detail below with reference to the accompanying drawings, which show some, but not all, embodiments of the invention. In fact, the present invention may be carried out in a variety of forms and should not be construed as being limited to the embodiments described herein, but rather these embodiments are provided to satisfy the legal requirements to which this disclosure is applicable. The singular forms “a,” “an,” and “the” used herein and in the accompanying claims encompass plural nouns unless the context clearly indicates otherwise.

[0011] Some embodiments of the present invention generally relate to a heated blanket (for example, for outdoor and / or nighttime use), which comprises a sweat-absorbing layer (PAL), a metal coating layer (MCL), and a heat-absorbing layer (TAL), wherein the MCL is located directly or indirectly between the PAL and the TAL. For example, the TAL may define the outermost layer of the heated blanket, the PAL may define the second outermost layer of the heated blanket, and the MCL constitutes at least one layer between the two outermost layers of the heated blanket. The heated blanket may be particularly suitable for use as a heating system for outdoor activities in low-temperature environments and / or during the daytime (e.g., before sunset). The TAL provides, for example, a layer that absorbs very little light of certain wavelengths and / or transfers this absorbed energy to the MCL, while according to some embodiments, the TAL also functions as an insulating layer that reduces heat loss from the MCL to the external environment. The MCL provides thermal reflection, for example, by reflecting electromagnetic radiation from the user's body (e.g., back towards the user). The PAL may include, for example, a fabric capable of absorbing and / or releasing sweat from the user's body, which may be particularly desirable. This is because if sweat remains on the surface of the user's body and / or can accumulate in contact with the user's body, that sweat will eventually cool and act as a heat sink, unnecessarily drawing heat away from the user's body. In addition, the PAL may include multiple through-holes, which act as windows or unobstructed gateways for electromagnetic radiation emitted from the user to strike the MCL and bounce back to the user, preventing or mitigating a drop in the user's body temperature. When in use, for example, the PAL may be positioned adjacent to or near the user (e.g., a mammal), and the multiple through-holes allow for a nearly unobstructed, high level of access to the MCL by radiation or heat emitted from the user, which is then reflected back to the user by the MCL. In other words, during use, the PAL is typically located close to the user, while the TCL is located distal to the user.

[0012] According to some embodiments of the present invention, a heated blanket may be used as a reflective and warming layer to reduce heat loss from the human body. In this regard, the heated blanket may be provided in the form of a gown, face mask, sterile wrap, head covering, heating pad, surgical drape, medical heated blanket, or outdoor heated blanket, having high reflectivity, good flexibility, sufficient drape, and breathability. For example, in cold outdoor weather, wrapping a user's body in a heated blanket can help prevent radiant heat loss and suppress a drop in body temperature.

[0013] According to some embodiments of the present invention, the TAL and / or PAL and / or heated blanket may include a desirable level of flexibility (e.g., flexibility as measured by a handle ometer) to achieve sufficient drape and / or wrapability (e.g., the ability to wrap around the user), and / or desirable breathability (e.g., the ability to allow vapor to pass through the heated blanket and out to the other side of the heated blanket), and / or a desirable level of liquid permeability as measured by a hydrostatic head.

[0014] The terms "substantial" or "substantially" may, according to some embodiments of the present invention, encompass the entire specified amount, or, according to some other embodiments of the present invention, encompass a near-total amount (e.g., 95%, 96%, 97%, 98%, or 99% of the specified total amount) rather than the entire specified amount.

[0015] As used interchangeably herein, the terms "polymer" or "polymeric" may include homopolymers, copolymers (e.g., block copolymers, graft copolymers, random copolymers, alternating copolymers, etc.), terpolymers, etc., as well as blends and modifications thereof. Further, unless otherwise specifically limited, the terms "polymer" or "polymeric" shall include all possible structural isomers, stereoisomers including, without limitation, configurational isomers, optical isomers, or enantiomers, and / or any chiral molecular configurations of such polymers or polymeric materials. These configurations include, without limitation, isotactic, syndiotactic, and atactic configurations of such polymers or polymeric materials. The terms "polymer" or "polymeric" shall also include polymers made from various catalyst systems including, without limitation, Ziegler-Natta catalyst systems and metallocene / single-site catalyst systems. The terms "polymer" or "polymeric" shall also include, according to some embodiments of the present invention, polymers produced by fermentation processes or polymers of biological origin.

[0016] As used herein, the terms "nonwoven" and "nonwoven web" may include webs having a structure of individual fibers, filaments, and / or yarns that do not have a distinguishable repeating pattern as seen in knitted or woven fabrics, although there may be insertions therebetween. The nonwoven or nonwoven web may be formed, according to some embodiments of the present invention, by any process conventionally known in the art (e.g., meltblowing, spunbonding, needle punching, hydroentangling, air laying, and bonded card web processes, etc.). As used herein, a "nonwoven web" may include a plurality of individual fibers that have not been processed in an integrated process.

[0017] As used herein, the terms "fabric" and "nonwoven fabric" may include a web of fibers in which the plurality of fibers are mechanically entangled or interconnected, fused to each other, or chemically bonded to each other. For example, a nonwoven web of individually placed fibers may be processed in a bonding or integrating process such that at least a portion of the individual fibers are bonded to form a coherent (e.g., bonded) web of interconnected fibers.

[0018] As used herein, the terms "consolidated" and "consolidation" may include bringing at least a portion of the fibers of a nonwoven web closer together or attaching them to each other (e.g., by thermally fusing them to each other, chemically bonding them to each other, and / or mechanically entangling them with each other) to form one or more bonding sites, which function to provide greater resistance to external forces (e.g., abrasion and tensile forces) compared to a non-consolidated web. The one or more bonding sites may include, for example, discrete or local regions of the web material that are softened or melted and optionally compressed thereafter or simultaneously to form a discrete or local deformation of the web material. Further, the term "consolidated" may include, by way of merely several examples, an entire nonwoven web that has been processed to bring at least a portion of the fibers closer together or attach them to each other (e.g., by thermally fusing them to each other, chemically bonding them to each other, and / or mechanically entangling them with each other) by, for example, thermal bonding or mechanical entanglement (e.g., hydroentanglement). Such a web may, according to some embodiments of the present invention, be regarded as a "consolidated nonwoven fabric", a "nonwoven fabric", or simply a "fabric".

[0019] In this specification, the term “staple fiber” may encompass cut fibers from a filament. According to some embodiments, staple fibers may be formed using any type of filament material. For example, staple fibers may be formed from polymer fibers and / or elastomer fibers. Non-limiting examples of materials may include polyolefins (e.g., polypropylene or polypropylene-containing copolymers), polyethylene terephthalate, and polyamides. The average length of staple fibers may be, for example, about 2 centimeters to about 15 centimeters.

[0020] In this specification, the term “spunbond” may encompass fibers formed by extruding a molten thermoplastic material as filaments from a spinneret capillary, which are multiple fine, usually circular, filaments, the diameter of which then rapidly decreases. According to one embodiment of the present invention, spunbond fibers are usually non-adhesive when deposited on a collection surface and may be usually continuous as disclosed and described herein. The spunbond used in some composites of the present invention may encompass nonwoven fabrics described in the literature as SPINLACER®. Spunbond fibers may include, for example, long fibers.

[0021] In this specification, the term “continuous fibers” means fibers that have not been cut from their original length before being formed as a nonwoven web or nonwoven fabric. Continuous fibers may have an average length of more than about 15 centimeters to more than 1 meter, and may be at most the length of the web or fabric to be formed. For example, in this specification, continuous fibers may include fibers whose length is at least 1,000 times the average diameter of the fiber, such as fibers whose length is at least about 5,000, 10,000, 50,000, or 100,000 times the average diameter of the fiber.

[0022] In this specification, the term “meltblown” may include, according to some embodiments of the present invention, molten thermoplastic material being extruded as molten threads or filaments through a plurality of fine die capillaries into a focused high-speed (usually high-temperature) gas stream (e.g., air stream), which thins the filaments of the molten thermoplastic material by the gas stream, reducing their diameter (may be reduced to the diameter of a microfiber), and the fibers formed thereby. According to one embodiment of the present invention, the die capillaries may be circular. The meltblown fibers are then carried by the high-speed gas stream and deposited on a collection surface to form a web of randomly dispersed meltblown fibers. The meltblown fibers are microfibers that may be continuous or discontinuous, and may include microfibers that are usually sticky when deposited on a collection surface. However, the meltblown fibers are shorter in length than spunbond fibers.

[0023] In this specification, the term “monolithic” film may encompass any continuous film that is substantially free of or completely free of pores (e.g., completely free of pores). In some alternative embodiments of the present invention, the pore structure contained in the “monolithic” film may be less than the pore structure that would be found in a microporous film. According to some non-limiting exemplary embodiments of the present invention, a monolithic film can act as a barrier to liquids and particulate matter, while allowing water vapor to pass through. Furthermore, although we do not wish to be bound by theory, it is possible to provide articles that are more comfortable to wear by achieving and maintaining high breathability, because the movement of water vapor through the laminated structure helps reduce and / or limit the discomfort caused by excess moisture being trapped and coming into contact with the skin. The “monolithic” film may encompass, for example, a highly breathable polymer.

[0024] In this specification, the term “highly breathable polymer” may encompass any polymer or elastomer that is selectively permeable to water vapor but substantially impermeable to liquid water, and capable of forming a breathable film. For example, a highly breathable polymer can absorb and desorb water vapor, and can provide a barrier to liquids (e.g., water, blood, etc.). For example, a highly breathable polymer can allow water vapor to pass through a film by absorbing water vapor from one side of the film and releasing it from the other side. Because a highly breathable polymer can impart breathability to a film, a film formed from such a polymer does not need to contain pores (e.g., a monolithic film). According to some embodiments of the present invention, a “highly breathable polymer” has a water vapor transmission rate (MVTR) of at least 500 g / m² per day when formed as a film. 2 This may include any thermoplastic polymer or elastomer. According to some embodiments of the present invention, the "highly permeable polymer" has an MVTR of at least 750 g / m² per day when formed as a film (e.g., a film with a thickness of about 25 microns or less). 2 Or at least 1000g / m² 2 The highly permeable polymer may include any thermoplastic polymer or elastomer. According to some embodiments of the present invention, the highly permeable polymer may include any one or any combination thereof of, for example, polyether block amide copolymers (e.g., PEBAX® from Arkema Group), polyester block amide copolymers, copolyester thermoplastic elastomers (e.g., ARNITEL® from DSM Engineering Plastics, or HYTREL® from EI DuPont de Nemours and Company), or thermoplastic urethane elastomers (TPU).

[0025] In this specification, the term “microporous” film may encompass polymer film layers in which multiple micropores are dispersed and clustered throughout the entire body of the film. For example, the production of a microporous film may generally be carried out by dispersing pulverized particles of a non-hygroscopic filler material, such as inorganic salts (e.g., calcium carbonate), in a suitable polymer, then forming a film of the filled polymer, and stretching the film to obtain good porosity and allow good absorption or permeation of water vapor. For example, the permeability of a microporous film may depend on stretching the filler-impregnated film to form winding pore channels throughout the film in order to obtain the desired porosity (e.g., pore formation). Furthermore, the barrier properties of such a microporous film are influenced by the surface tension of the liquid to which the microporous film is exposed (e.g., isopropyl alcohol penetrates a microporous film more easily than water), and odors are more easily permeated through a microporous film than through a solid film (e.g., a monolithic film).

[0026] In this specification, the term “layer” may encompass a broadly recognizable combination of similar material types and / or functions existing in the XY plane.

[0027] All endpoints of natural numbers disclosed herein that can create smaller ranges within a given range of disclosures fall within the scope of some embodiments of the present invention. For example, the disclosure of about 10 to about 15 includes intermediate range disclosures, e.g., disclosures of about 10 to about 11, about 10 to about 12, about 13 to about 15, about 14 to about 15, etc. Furthermore, all endpoints of single decimals (e.g., numbers rounded to two decimal places) that can create smaller ranges within a given range of disclosures herein fall within the scope of some embodiments of the present invention. For example, the disclosure of about 1.5 to about 2.0 includes intermediate range disclosures, e.g., disclosures of about 1.5 to about 1.6, about 1.5 to about 1.7, about 1.7 to about 1.8, etc.

[0028] In one embodiment, the present invention provides a heated blanket (for example, for outdoor and / or daytime use) which comprises (i) a sweat-absorbing layer (PAL), (ii) a metal coating layer (MCL), and (iii) a heat-absorbing layer (TAL), wherein the MCL is located directly or indirectly between the PAL and the TAL. For example, Figure 1 shows a heated blanket 1 which comprises PAL 10, MCL 30, and TAL 50, with the MCL located between the PAL and the TAL. As shown in Figure 1, the TAL 50 may be adjacent to and in contact with the MCL, while a first adhesive layer 70 may be placed between the PAL and the MCL, thereby bonding the PAL to the MCL.

[0029] According to some embodiments of the present invention, the PAL may include a woven or nonwoven fabric. As described above, the PAL may include a plurality of through-holes formed in the z-direction perpendicular to the xy-plane of the PAL, penetrating the entire thickness of the PAL. For example, Figure 2 shows a PAL 10 including a plurality of through-holes 15 that extend completely through the entire thickness of the PAL. On the other hand, Figure 3 shows the PAL 10 of Figure 2 placed over an MCL 30 according to some embodiments of the present invention, with the MCL 30 visible through the plurality of through-holes 15.

[0030] According to some embodiments of the present invention, the multiple through holes have an average individual opening area of ​​approximately 1 to approximately 100 mm². 2 It may be, for example, at least about 1, 3, 5, 8, 10, 15, 20, 25, 30, 35, 40, 45, and 50 mm 2 It may be any of the following, and / or up to approximately 100, 95, 90, 85, 80, 75, 70, 65, 60, 55, and 50 mm 2It may be any of the above. According to some embodiments of the present invention, the PAL may include particularly small through-holes similar to those of a cross-stitch cloth (e.g., through-holes where the average of the individual opening areas is close to the lower end of the above range). Additionally or alternatively, the PAL may include more visible through-holes (e.g., through-holes where the average of the individual opening areas is close to the upper end of the above range), in which case the through-holes may be formed or cut out after the fabric has been formed. In some embodiments of the present invention, the PAL may include a water-entangled nonwoven fabric, in which case the through-holes may have a more visible nature, formed during the water-entanglement process. In addition or alternatively, multiple through-holes may define a total opening area of ​​approximately 10 to approximately 80%, for example, at least 10, 15, 20, 25, 30, 35, 40, 45, and 50%, and / or at most 80, 75, 70, 65, 60, 55, and 50% (for example, 40 to 60%).

[0031] According to some embodiments of the present invention, PAL may comprise a grating fabric (e.g., a grating woven fabric or a grating nonwoven fabric). Additionally or alternatively, PAL may comprise one or more spunbond layers, one or more meltblown layers, one or more cellulose-containing layers, one or more needle-punched layers, one or more water-entangled layers, one or more card staple fiber layers, one or more airlaid layers, one or more submicron layers, or any combination thereof. Additionally or alternatively, PAL may comprise synthetic polymers, for example, one or more polyolefins, one or more polyesters, one or more polyamides, or any combination thereof. Additionally or alternatively, PAL may comprise natural cellulose materials, synthetic cellulose materials, or any combination thereof, for example, cotton, pulp, viscose, and rayon. Additionally or alternatively, PAL may comprise a plurality of superabsorbent polymer (SAP) components (e.g., beads or fine particles) embedded in the body portion of PAL. For example, the SAP component may be contained within or entangled within multiple fibers (e.g., synthetic fibers and / or cellulose fibers). Additionally or alternatively, the PAL may be provided as a nonwoven web (e.g., an unintegrated nonwoven web) or as a nonwoven integrated by any of the means disclosed herein. For example, the PAL may be integrated by thermal calendering, ultrasonic bonding, mechanical bonding (e.g., water entanglement), chemical bonding, or any combination thereof.

[0032] According to some embodiments of the present invention, PAL may include a spunbond-meltblown-spunbond structure or a spunbond-cellulose-spunbond structure. According to some embodiments of the present invention, PAL may include a water-entangled composite material formed from a first spunbond layer, a first cellulose-containing layer, and a second spunbond layer. For example, multiple through-holes in PAL may be formed during the water-entanglement process.

[0033] According to some embodiments of the present invention, the PAL may have a basis weight of 5 to about 500 gsm, for example, at least about 5, 6, 8, 10, 12, 15, 25, 50, 75, 100, 150, 200, and 250 gsm, and / or at most about 500, 450, 400, 350, 300, and 250 gsm.

[0034] According to some embodiments of the present invention, the heated blanket includes a first adhesive layer located between the PAL and MCL and bonding the PAL and MCL. The first adhesive layer may include, for example, a first discontinuous pattern, the first discontinuous pattern including a first plurality of discrete adhesive islands surrounded by areas without adhesive. Alternatively, the first adhesive layer may include a first discontinuous pattern, the first discontinuous pattern including a first plurality of discrete islands that are without adhesive and surrounded by areas of adhesive. Alternatively, the first adhesive layer may include a first discontinuous pattern, the first discontinuous pattern including a first plurality of independent and distinct adhesive lines, the first plurality of independent and distinct adhesive lines may be linear, arcuate, or zigzag in shape.

[0035] The first discontinuity pattern may include an adhesive-free area, at least in part, aligned with a plurality of through-holes in the PAL, according to some embodiments of the present invention. For example, the first discontinuity pattern may overlap with about 50% or less of the total opening area of ​​the PAL, for example, at least about 0, 3, 5, 8, 10, 12, 15, 18, 20, 22, and 25%, and / or up to about 50, 45, 40, 35, 30, 28, 26, and 25%.

[0036] According to some embodiments of the present invention, the first adhesive layer may have a basis weight of about 0.2 to about 5 gsm, for example, at least about 0.25, 0.5, 0.75, 1, 1.5, 2, and 2.5 gsm, and / or at most about 5, 4, 3, and 2.5 gsm. In addition or alternatively, according to some embodiments of the present invention, the first adhesive layer may include a moisture-proof pressure-sensitive adhesive, an acrylic hot-melt adhesive, or a combination thereof.

[0037] According to some embodiments of the present invention, the MCL may include a highly reflective metal or a highly reflective metal alloy. For example, the highly reflective metal or highly reflective metal alloy may reflect at least about 80% of electromagnetic radiation over all wavelengths from about 1 to about 20 microns (e.g., over all wavelengths from about 8 to about 15 microns), or, for example, at least about 85%, or at least about 90%, or at least about 95% of electromagnetic radiation over all wavelengths from about 1 to about 20 microns (e.g., over all wavelengths from about 8 to about 15 microns). In addition or alternatively, the highly reflective metal or highly reflective metal alloy may include aluminum or its alloys, gold or its alloys, copper or its alloys, silver or its alloys, or any combination thereof. Additionally or alternatively, the MCL may have an average thickness of about 100 to about 1,000 nm, for example, at least about 100, 200, 300, 400, and 500 nm, and / or at most about 1,000, 900, 800, 700, 600, and 500 nm. Additionally or alternatively, the formation of the MCL may be carried out by a vacuum coating method, for example, thermal evaporation, E-beam evaporation, sputtering, arc ion plating, plasma chemical vapor deposition, or atomic layer deposition.

[0038] According to some embodiments of the present invention, the TAL may be directly adjacent to the MCL. In this regard, the TAL may be supplied and / or formed, while the MCL may be deposited directly or indirectly on the TAL, or formed in other ways. According to some embodiments of the present invention, the TAL may have an absorptiality of at least 75% for electromagnetic radiation across all wavelengths from about 0.1 to about 0.4 microns, for example, at least 80%, 85%, 90%, 95%, or 99%. Additionally or alternatively, the TAL may have an absorptiality of at least 75% for electromagnetic radiation across all wavelengths from about 0.4 to about 0.7 microns, for example, at least 80%, 85%, 90%, 95%, or 99%. Additionally or alternatively, the TAL may have an absorptiality of at least 75% for electromagnetic radiation across all wavelengths from about 0.7 to about 1000 microns, for example, at least 80%, 85%, 90%, 95%, or 99%.

[0039] According to some embodiments of the present invention, TAL may include a film comprising polypropylene, polyethylene, polyester (e.g., polyethylene terephthalate), thermoplastic elastomer, thermoplastic polyurethane, polybutylene terephthalate, polybutylene adipate terephthalate, polybutylate, polylactic acid, or any combination thereof, wherein the film comprises a black pigment or black colorant throughout the film and / or a black coating applied to the film, e.g., paint, rubber coating, plasticizing coating, or lacquer. As an example, TAL may be a CaCO3-filled polyethylene resin with a carbon black masterbatch or black pigment added, which may provide a TAL with excellent heat absorption and moisture permeability. Additionally or alternatively, TAL may be a layer or group of layers of paint, rubberized coating, plasticizing coating, lacquer, or combination thereof applied to MCL. Additionally or alternatively, the thickness of TAL may be approximately 5 to approximately 150 microns, for example, at least 5, 10, 15, 20, 25, 30, 40, 50, 60, 70, and 75 microns, and / or at most 150, 125, 100, 90, 80, and 75 microns.

[0040] According to some embodiments of the present invention, TAL may be a film comprising a single-layer microporous film or a single-layer monolithic film. Alternatively, the film may comprise a multilayer film comprising one or more microporous films and / or one or more monolithic films.

[0041] According to some embodiments of the present invention, TAL has a water vapor transmission rate (MVTR) of at least about 25 g / m³ per 24 hours as measured by ASTM E96D. 2 It may be, for example, at least about 25, 50, 75, 100, 125, 150, 175, and 200 g / m² per 24 hours as measured by ASTM E96D. 2It may be any of them, and / or, in the measurement according to ASTM E96D, at most about 500, 450, 400, 350, 300, 275, 250, 225, and 200 g / m per 24 hours 2 It may be any of them. Additionally or alternatively, for the TAL, the hydrostatic head (HSH) may be at least about 50 mbar in the measurement according to AATCC 127 (60 mbar / min), for example, it may be any of at least about 50, 60, 75, 80, 100, and 125 mbar in the measurement according to AATCC 127 (60 mbar / min), and / or, it may be any of at most about 200, 175, 150, and 125 mbar in the measurement according to AATCC 127 (60 mbar / min).

[0042] According to some embodiments of the present invention, for the heating blanket, the moisture vapor transmission rate (MVTR) may be at least about 25 g / m per 24 hours in the measurement according to ASTM E96D 2 It may be any of them, for example, it may be any of at least about 25, 50, 75, 100, 125, 150, 175, and 200 g / m per 24 hours in the measurement according to ASTM E96D 2 It may be any of them, and / or, in the measurement according to ASTM E96D, at most about 500, 450, 400, 350, 300, 275, 250, 225, and 200 g / m per 24 hours 2 It may be any of them. Additionally or alternatively, for the heating blanket, the hydrostatic head (HSH) may be at least about 50 mbar in the measurement according to AATCC 127 (60 mbar / min), for example, it may be any of at least about 50, 60, 75, 80, 100, and 125 mbar in the measurement according to AATCC 127 (60 mbar / min), and / or, it may be any of at most about 200, 175, 150, and 125 mbar in the measurement according to AATCC 127 (60 mbar / min).

[0043] In another embodiment, the present invention provides a method for manufacturing a heated blanket as described and disclosed herein. This method may include the steps of (i) preparing a heat-absorbing layer (TAL), (ii) depositing a metal coating layer (MCL) directly or indirectly on the TAL, (iii) preparing or forming a sweat-absorbing layer (PAL) which may include a plurality of through-holes as described above, and (iv) bonding the PAL with the MCL to realize a heated blanket as described and disclosed herein.

[0044] According to some embodiments of the present invention, the step of bonding PAL to MCL includes, as described above, the step of directly bonding PAL to MCL via a first adhesive layer. Alternatively, the first adhesive layer may be deposited on PAL and then PAL to MCL, with the first adhesive layer positioned between PAL and MCL, adjacent to PAL and MCL. Alternatively, the first adhesive layer may be deposited on MCL and then PAL and MCL to MCL, with the first adhesive layer positioned between PAL and MCL, adjacent to PAL and MCL. The first adhesive layer may include a discontinuous pattern, as described above.

[0045] Non-exclusive exemplary embodiments

[0046] The following exemplary embodiments are for illustrative purposes only and emphasize that each feature described in this application is interchangeable in various forms or configurations.

[0047] Example 1: A heated blanket comprising (i) a sweat-absorbing layer (PAL), (ii) a metal coating layer (MCL), and (iii) a heat-absorbing layer (TAL), wherein the MCL is located directly or indirectly between the PAL and the TAL.

[0048] Example 2: The heating blanket according to Example 1, wherein PAL comprises a woven or nonwoven fabric.

[0049] Example 3: A heating blanket according to any one of Examples 1 to 2, wherein the PAL includes a plurality of through holes formed in the z direction perpendicular to the xy plane of the PAL, penetrating the entire thickness of the PAL.

[0050] Example 4: Multiple through holes have an average individual opening area of ​​approximately 1 to 100 mm. 2 For example, at least approximately 1, 3, 5, 8, 10, 15, 20, 25, 30, 35, 40, 45, and 50 mm 2 It is one of the following and / or, at most about 100, 95, 90, 85, 80, 75, 70, 65, 60, 55, and 50 mm 2 A heated blanket according to Example 3, which is one of the following.

[0051] Example 5: A heating blanket according to any one of Examples 3 to 4, wherein the multiple through-holes define a total opening area of ​​about 10 to about 80%, for example, at least about 10, 15, 20, 25, 30, 35, 40, 45, and 50%, and / or at most about 80, 75, 70, 65, 60, 55, and 50% (for example, 40 to 60%).

[0052] Example 6: A heating blanket according to any one of Examples 1 to 5, wherein PAL comprises a gridding fabric (e.g., a gridding woven fabric or a gridding nonwoven fabric).

[0053] Example 7: The heating blanket according to any one of Examples 1 to 6, wherein the PAL comprises one or more spunbond layers, one or more meltblown layers, one or more cellulose-containing layers, one or more needle-punched layers, one or more water-entangled layers, one or more carded layers, one or more submicron layers, or any combination thereof, and the PAL comprises a synthetic polymer, for example, one or more polyolefins, one or more polyesters, one or more polyamides, natural cellulose materials, synthetic cellulose materials, or any combination thereof.

[0054] Example 8: The heating blanket according to Example 7, wherein PAL comprises a spunbond-meltblown-spunbond structure.

[0055] Example 9: The heating blanket according to Example 7, wherein PAL comprises a spunbond-cellulose-spunbond structure.

[0056] Example 10: The heating blanket according to Example 9, wherein PAL comprises a water-entangled composite material formed from a first spunbond layer, a first cellulose-containing layer, and a second spunbond layer.

[0057] Example 11: A heating blanket according to any one of Examples 1 to 10, wherein the PAL comprises multiple superabsorbent polymer (SAP) components (e.g., beads or microparticles) embedded in the body portion of the PAL.

[0058] Example 12: A heated blanket according to any one of Examples 1 to 11, wherein the PAL has a basis weight of 5 to about 500 gsm, for example, at least about 5, 6, 8, 10, 12, 15, 25, 50, 75, 100, 150, 200, and 250 gsm, and / or at most about 500, 450, 400, 350, 300, and 250 gsm.

[0059] Example 13: A heating blanket according to any one of Examples 1 to 12, further comprising a first adhesive layer located between the PAL and MCL and bonding the PAL and MCL.

[0060] Example 14: The heated blanket according to Example 13, wherein the first adhesive layer includes a first discontinuous pattern, the first discontinuous pattern includes a first plurality of discrete adhesive islands surrounded by areas without adhesive.

[0061] Example 15: The heated blanket according to Example 13, wherein the first adhesive layer includes a first discontinuous pattern, the first discontinuous pattern includes a first plurality of discrete islands that are not adhesive and are surrounded by areas of adhesive.

[0062] Example 16: The heating blanket according to Example 13, wherein the first adhesive layer includes a first discontinuous pattern, the first discontinuous pattern includes a first plurality of independent and different adhesive lines, the first plurality of independent and different adhesive lines may be in a linear, arcuate, or zigzag shape.

[0063] Example 17: A heating blanket according to any one of Examples 14-16, wherein the first discontinuous pattern includes an adhesive-free area aligned with multiple through-holes in the PAL.

[0064] Example 18: A heated blanket according to any one of Examples 14-17, wherein the first discontinuous pattern overlaps with no more than about 50% of the total opening area of ​​the PAL, for example, overlapping with at least about 0, 3, 5, 8, 10, 12, 15, 18, 20, 22, and 25%, and / or overlapping with at most about 50, 45, 40, 35, 30, 28, 26, and 25%.

[0065] Example 19: A heated blanket according to any one of Examples 13 to 18, wherein the first adhesive layer has a basis weight of about 0.2 to about 5 gsm, for example, at least about 0.25, 0.5, 0.75, 1, 1.5, 2, and 2.5 gsm and / or at most about 5, 4, 3, and 2.5 gsm.

[0066] Example 20: A heated blanket according to any one of Examples 13 to 19, wherein the first adhesive layer comprises a moisture-proof pressure-sensitive adhesive, an acrylic hot-melt adhesive, or a combination thereof.

[0067] Example 21: A heating blanket according to any one of Examples 1 to 20, wherein the MCL comprises a high-reflectivity metal or a high-reflectivity metal alloy.

[0068] Example 22: The heating blanket according to Example 21, wherein the high-reflectivity metal or high-reflectivity metal alloy reflects at least about 80% of electromagnetic radiation over all wavelengths from about 1 to about 20 microns (for example, over all wavelengths from about 8 to about 15 microns), or reflects at least about 85%, or at least about 90%, or at least about 95% of electromagnetic radiation over all wavelengths from about 1 to about 20 microns (for example, over all wavelengths from about 8 to about 15 microns).

[0069] Example 23: A heating blanket according to any one of Examples 21 to 22, wherein the high reflectivity metal or high reflectivity metal alloy includes aluminum or an alloy thereof, gold or an alloy thereof, copper or an alloy thereof, silver or an alloy thereof, or any combination thereof.

[0070] Example 24: A heated blanket according to any one of Examples 21 to 23, wherein the MCL has an average thickness of about 100 nm to about 1,000 nm, for example, at least about 100, 200, 300, 400, and 500 nm, and / or at most about 1,000, 900, 800, 700, 600, and 500 nm.

[0071] Example 25: A heated blanket according to any one of Examples 21 to 24, wherein the MCL is formed by a vacuum coating method, such as thermal evaporation, E-beam evaporation, sputtering, arc ion plating, plasma chemical vapor deposition, or atomic layer deposition.

[0072] Example 26: A heating blanket according to any one of Examples 1 to 25, wherein the TAL is directly adjacent to the MCL.

[0073] Example 27: A heating blanket according to any one of Examples 1 to 26, wherein the TAL has an absorptivity of at least 75% for electromagnetic radiation across all wavelengths from about 0.1 to about 0.4 microns, for example, at least 80%, 85%, 90%, 95%, or 99%.

[0074] Example 28: A heating blanket according to any one of Examples 1 to 27, wherein the TAL has an absorptiality of at least 75% for electromagnetic radiation across all wavelengths from about 0.4 to about 0.7 microns, for example, at least 80%, 85%, 90%, 95%, or 99%.

[0075] Example 29: A heating blanket according to any one of Examples 1 to 28, wherein the TAL has an absorptivity of at least 75% for electromagnetic radiation across all wavelengths from about 0.7 to about 1000 microns, for example, at least 80%, 85%, 90%, 95%, or 99%.

[0076] Example 30: A heating blanket according to any one of Examples 1 to 29, comprising a film in which TAL comprises polypropylene, polyethylene, polyester (e.g., polyethylene terephthalate), thermoplastic elastomer, thermoplastic polyurethane, polybutylene terephthalate, polybutylene adipate terephthalate, polybutyrate, polylactic acid, or any combination thereof, wherein the film comprises a black pigment or black colorant throughout the film and / or a black coating applied to the film, e.g., paint, rubber coating, plasticizing coating, or lacquer.

[0077] Example 31: A heated blanket according to any one of Examples 1 to 29, wherein TAL is a paint, rubberized coating, plasticizer coating, or lacquer applied to the MCL.

[0078] Example 32: A heating blanket according to any one of Examples 1 to 31, wherein the thickness of the TAL is approximately 5 to approximately 150 microns, for example, at least approximately 5, 10, 15, 20, 25, 30, 40, 50, 60, 70, and 75 microns, and / or at most approximately 150, 125, 100, 90, 80, and 75 microns.

[0079] Example 33: The heating blanket according to any one of Examples 1 to 32, wherein TAL is a film comprising a single-layer microporous film or a single-layer monolithic film.

[0080] Example 34: The heating blanket according to Example 33, wherein the film comprises a multilayer film including one or more microporous films and / or one or more monolithic films.

[0081] Example 35: A heating blanket according to any one of Examples 1 to 34, wherein TAL comprises a CaCO3-filled polyethylene resin and a carbon black masterbatch or black pigment.

[0082] Example 36: TAL has a water vapor transmission rate (MVTR) of at least about 25 g / m³ per 24 hours, as measured by ASTM E96D. 2 For example, measurements by ASTM E96D show at least approximately 25, 50, 75, 100, 125, 150, 175, and 200 g / m² per 24 hours. 2 It is one of the following and / or, as measured by ASTM E96D, it is up to approximately 500, 450, 400, 350, 300, 275, 250, 225, and 200 g / m² per 24 hours. 2 A heated blanket according to any one of Examples 1 to 35, which is one of the above.

[0083] Example 37: A heated blanket according to any one of Examples 1 to 36, wherein the hydrostatic head (HSH) is at least about 50 mbar as measured by AATCC 127 (60 mbar / min), for example, at least about 50, 60, 75, 80, 100, and 125 mbar as measured by AATCC 127 (60 mbar / min), and / or at most about 200, 175, 150, and 125 mbar as measured by AATCC 127 (60 mbar / min).

[0084] Example 38: The heated blanket had a water vapor transmission rate (MVTR) of at least about 25 g / m² per 24 hours, as measured by ASTM E96D. 2 For example, measurements by ASTM E96D show at least approximately 25, 50, 75, 100, 125, 150, 175, and 200 g / m² per 24 hours. 2 It is one of the following and / or, as measured by ASTM E96D, it is up to approximately 500, 450, 400, 350, 300, 275, 250, 225, and 200 g / m² per 24 hours. 2 A heated blanket according to any one of Examples 1 to 37, which is one of the above.

[0085] Example 39: A heated blanket according to any one of Examples 1 to 38, wherein the hydrostatic head (HSH) is at least about 50 mbar as measured by AATCC 127 (60 mbar / min), for example, at least about 50, 60, 75, 80, 100, and 125 mbar as measured by AATCC 127 (60 mbar / min), and / or at most about 200, 175, 150, and 125 mbar as measured by AATCC 127 (60 mbar / min).

[0086] Example 40: A method for manufacturing a heated blanket, such as the heated blanket according to Examples 1 to 39, comprising: (i) preparing a heat-absorbing layer (TAL); (ii) depositing a metal coating layer (MCL) directly or indirectly on the TAL; (iii) preparing or forming a sweat-absorbing layer (PAL); and (iv) bonding the PAL with the MCL to realize a heated blanket.

[0087] Example 41: The method according to Example 40, wherein the step of bonding PAL to MCL includes the step of directly bonding PAL to MCL via a first adhesive layer.

[0088] Example 42: The method according to Example 41, wherein a first adhesive layer is deposited on the PAL, and the PAL is then bonded to the MCL, and the first adhesive layer is located between the PAL and the MCL, adjacent to the PAL and the MCL.

[0089] Example 43: The method according to Example 41, wherein a first adhesive layer is deposited on the MCL, and then the PAL and MCL are bonded together, and the first adhesive layer is located between the PAL and MCL, adjacent to the PAL and MCL.

[0090] These and other modifications and variations of the present invention will be carried out by those skilled in the art without departing from the spirit and scope of the invention (which is described more specifically in the appended claims). Furthermore, as is obvious, the various embodiments are interchangeable in whole or in part. Moreover, as will be understood by those skilled in the art, the above description is illustrative and not intended to limit the invention, which is described further in such appended claims. Accordingly, the spirit and scope of the appended claims should not be limited to the illustrative description of the embodiments contained herein. [Note 1] (i) A sweat-absorbing layer (PAL) containing woven or nonwoven fabric, (ii) Metal coating layer (MCL), (iii) A heat-absorbing layer (TAL), wherein the MCL is located directly or indirectly between the PAL and the TAL, A heated blanket that includes heating. [Note 2] The PAL includes a plurality of through holes formed in the z direction perpendicular to the xy plane of the PAL, penetrating the entire thickness of the PAL, and (i) the average of the individual opening areas of the plurality of through holes is approximately 1 to approximately 100 mm 2 For example, at least approximately 1, 3, 5, 8, 10, 15, 20, 25, 30, 35, 40, 45, and 50 mm 2 It is one of the following and / or, at most about 100, 95, 90, 85, 80, 75, 70, 65, 60, 55, and 50 mm 2 The heating blanket as described in Appendix 1, which is either (i) or (ii) the plurality of through holes define a total opening area of ​​about 10 to about 80%, for example, at least about 10, 15, 20, 25, 30, 35, 40, 45, and 50%, and / or at most about 80, 75, 70, 65, 60, 55, and 50%, or both of (i) and (ii). [Note 3] The heating blanket according to Appendix 1, further comprising a first adhesive layer located between the PAL and the MCL and bonding the PAL and the MCL. [Note 4] The heating blanket according to Appendix 3, wherein the first adhesive layer includes a first discontinuous pattern, the first discontinuous pattern includes a first plurality of discrete adhesive islands surrounded by areas without adhesive. [Note 5] The heating blanket according to Appendix 3, wherein the first adhesive layer includes a first discontinuous pattern, the first discontinuous pattern includes a first plurality of discrete islands that are not adhesive and are surrounded by areas of adhesive. [Note 6] The heating blanket according to Appendix 3, wherein the first adhesive layer includes a first discontinuous pattern, the first discontinuous pattern includes a first plurality of independent and different adhesive lines, the first plurality of independent and different adhesive lines may be in a linear, arcuate, or zigzag shape. [Note 7] The heating blanket according to any one of the appendices 3 to 6, wherein the first discontinuous pattern includes an adhesive-free area aligned with the plurality of through holes in the PAL, and optionally the first discontinuous pattern overlaps with no more than about 50% of the total opening area of ​​the PAL, for example, overlapping with at least about 0, 3, 5, 8, 10, 12, 15, 18, 20, 22, and 25%, and / or overlapping with a maximum of about 50, 45, 40, 35, 30, 28, 26, and 25%. [Note 8] The MCL is a heating blanket according to any one of the appendices 1 to 7, comprising a high-reflectivity metal or a high-reflectivity metal alloy. [Note 9] The heating blanket according to Appendix 8, wherein the high reflectivity metal or high reflectivity metal alloy reflects at least about 80% of electromagnetic radiation over all wavelengths from about 1 to about 20 microns (for example, over all wavelengths from about 8 to about 15 microns), or reflects at least about 85%, at least about 90%, or at least about 95% of electromagnetic radiation over all wavelengths from about 1 to about 20 microns (for example, over all wavelengths from about 8 to about 15 microns). [Note 10] The heating blanket described in any one of the appendices 8 to 9, wherein the high reflectivity metal or high reflectivity metal alloy includes aluminum or its alloys, gold or its alloys, copper or its alloys, silver or its alloys, or any combination thereof. [Note 11] The heating blanket according to any one of the appendices 1 to 10, wherein the TAL is directly adjacent to the MCL, and optionally the TAL comprises a film, the film comprising a black pigment or black colorant throughout the film, and / or a black coating applied to the film, such as paint, rubber coating, plasticizing coating, or lacquer. [Note 12] The heating blanket according to any one of the appendices 1 to 11, wherein the TAL has an absorptiality of at least 75% for electromagnetic radiation across all wavelengths from about 0.1 to about 0.4 microns, for example, at least 80%, 85%, 90%, 95%, or 99%. [Note 13] The heating blanket according to any one of the appendices 1 to 12, wherein the TAL has an absorptivity of at least 75% for electromagnetic radiation across all wavelengths from about 0.4 to about 0.7 microns, for example, at least 80%, 85%, 90%, 95%, or 99%. [Note 14] The heating blanket according to any one of the appendices 1 to 13, wherein the TAL has an absorptivity of at least 75% for electromagnetic radiation across all wavelengths from about 0.7 to about 1000 microns, for example, at least 80%, 85%, 90%, 95%, or 99%. [Note 15] A method for manufacturing a heated blanket as described in any one of the appendices 1 to 14, (i) A step of preparing a heat absorption layer (TAL), (ii) The step of depositing a metal coating layer (MCL) directly or indirectly on the TAL, (iii) A step of preparing or forming a sweat-absorbing layer (PAL), (iv) The step of coupling the PAL with the MCL to realize the heated blanket, A method that includes this.

Claims

1. (i) A sweat-absorbing layer (PAL) comprising a woven or nonwoven fabric, wherein the PAL includes a plurality of through-holes formed in the z direction perpendicular to the x-y plane of the PAL, penetrating the entire thickness of the PAL, (ii) Metal coating layer (MCL), (iii) A first adhesive layer located between the PAL and the MCL and bonding the PAL and the MCL, wherein the first adhesive layer includes a first discontinuous pattern, the first discontinuous pattern includes adhesive-free regions that are at least partially aligned with the plurality of through holes of the PAL, (iv) A thermal absorption layer (TAL), wherein the MCL is located directly or indirectly between the PAL and the TAL, and the TAL has an absorptiality of at least 75% to electromagnetic radiation over (a) all wavelengths from 0.1 to 0.4 microns, (b) all wavelengths from 0.4 to 0.7 microns, and / or (c) all wavelengths from 0.7 to 1000 microns. Includes, (i) The plurality of through holes have an average individual opening area of ​​1 to 100 mm², (ii) the plurality of through holes have a defined total opening area of ​​10 to 80%, or (iii) both (i) and (ii). Heated blanket.

2. The heating blanket according to claim 1, wherein (i) the average of the individual opening areas of the plurality of through holes is 1 to 20 mm², and (ii) the defined total opening area of ​​the plurality of through holes is 10 to 25%, or (iii) both (i) and (ii).

3. The heating blanket according to claim 1, wherein the first adhesive layer has a basis weight of 0.2 to 5 grams per square meter (gsm).

4. The heated blanket according to claim 3, wherein the first discontinuous pattern includes a first plurality of discrete adhesive islands surrounded by adhesive-free regions.

5. The heating blanket according to claim 3, wherein the first discontinuous pattern includes a plurality of first discrete islands that are not adhesive and are surrounded by areas of adhesive.

6. The heating blanket according to claim 3, wherein the first discontinuous pattern comprises a first plurality of independent and different adhesive lines, the first plurality of independent and different adhesive lines may be in a linear, arcuate, or zigzag shape.

7. The heating blanket according to any one of claims 1 to 6, wherein the first discontinuous pattern overlaps with 50% or less of the total opening area of ​​the PAL.

8. The heating blanket according to claim 7, wherein the MCL comprises a high-reflectivity metal or a high-reflectivity metal alloy.

9. The heating blanket according to claim 8, wherein the high-reflectivity metal or high-reflectivity metal alloy reflects at least 80% of electromagnetic radiation across all wavelengths from 1 to 20 microns.

10. The heating blanket according to claim 8 or 9, wherein the high reflectivity metal or high reflectivity metal alloy includes aluminum or an alloy thereof, gold or an alloy thereof, copper or an alloy thereof, silver or an alloy thereof, or any combination thereof.

11. The heating blanket according to claim 1, wherein the TAL is directly adjacent to the MCL, and optionally the TAL includes a film, the film including a black pigment or black colorant throughout the film, and / or a black coating applied to the film, such as paint, rubber coating, plasticizing coating, or lacquer.

12. The heating blanket according to claim 11, wherein the TAL has a thickness of 5 to 150 microns.

13. The aforementioned TAL has a water vapor transmission rate (MVTR) of at least 25 g / m³ per 24 hours, as measured by ASTM E96D. ２ The heated blanket according to claim 11 or 12.

14. A method for manufacturing a heated blanket, (i) A step of preparing a heat absorption layer (TAL), (ii) The step of depositing a metal coating layer (MCL) directly or indirectly on the TAL, (iii) A step of preparing or forming a sweat-absorbing layer (PAL), (iv) The step of combining the PAL with the MCL to realize the heating blanket for forming the heating blanket described in claim 1, A method that includes this.

15. The method according to claim 14, wherein the step of bonding the PAL to the MCL includes the step of directly adhering the PAL to the MCL.

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