WO2020263090A1 - Cooling garment - Google Patents
Cooling garment Download PDFInfo
- Publication number
- WO2020263090A1 WO2020263090A1 PCT/NL2020/050415 NL2020050415W WO2020263090A1 WO 2020263090 A1 WO2020263090 A1 WO 2020263090A1 NL 2020050415 W NL2020050415 W NL 2020050415W WO 2020263090 A1 WO2020263090 A1 WO 2020263090A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cooling
- garment
- water
- surface area
- outer layers
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
- A41D13/002—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches with controlled internal environment
- A41D13/005—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches with controlled internal environment with controlled temperature
- A41D13/0053—Cooled garments
- A41D13/0056—Cooled garments using evaporative effect
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
- A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
- A41D13/0512—Neck or shoulders area
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
- A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
- A41D13/0518—Chest
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D27/00—Details of garments or of their making
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D27/00—Details of garments or of their making
- A41D27/28—Means for ventilation
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D31/00—Materials specially adapted for outerwear
- A41D31/04—Materials specially adapted for outerwear characterised by special function or use
- A41D31/10—Impermeable to liquids, e.g. waterproof; Liquid-repellent
- A41D31/102—Waterproof and breathable
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D31/00—Materials specially adapted for outerwear
- A41D31/04—Materials specially adapted for outerwear characterised by special function or use
- A41D31/12—Hygroscopic; Water retaining
- A41D31/125—Moisture handling or wicking function through layered materials
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D1/00—Garments
- A41D1/04—Vests, jerseys, sweaters or the like
Definitions
- the invention relates to a cooling garment for cooling a torso of a wearer.
- evaporative cooling may also be used in technical means to support the natural cooling of a body, for example in cooling garments.
- the water is then contained in the garment by a suitable water-absorbing substance, such as cellulose or a super absorbent polymer of the type that is present in diapers and feminine napkins.
- a suitable water-absorbing substance such as cellulose or a super absorbent polymer of the type that is present in diapers and feminine napkins. The latter are known to be capable of holding up to 300 times their weight of water.
- the water-absorbing substance is typically sandwiched between two outer layers of the fabric that constitutes the garment. Such layers are permeable to water (as a liquid and/or vapor), which allows the transport of water from the water-absorbing substance to the outer surface of the garment. Upon evaporation of the water, heat is withdrawn from the garment, which manifests as a cooling effect.
- WO 2012/156067 A1 describes a cooling garment wherein the two outer layers are water-permeable. When such garment is contacted with water ( e.g . by submerging), the water-absorbing substance in the garment absorbs the water through the outer layers. This activates the garment and makes it ready for use.
- outer layers that are water-permeable are water-permeable.
- their surface at the interface with air becomes humid during use of the garment, because the water absorbed in the inside reaches the outer surface as a liquid. This is especially the case when the garment is subjected to pressure, for example during wearing of the garment. The humid surface is often experienced as uncomfortable by the wearer of such garment.
- the outer layers are impermeable to liquid water, activation by simply immersing the garment in water is not possible anymore.
- a cooling garment for cooling a torso of a wearer comprising a front and a rear panel with a neck opening therebetween, wherein
- the front panel and the rear panel comprise one single cooling section that forms at least a portion of the front panel and at least a portion of the rear panel, the cooling section comprising
- the neck opening (5) defining a neck opening surface area (SAneck opening) ;
- the cooling section is made of a cooling material comprising
- a water absorbent layer that is enclosed between both outer layers; the two outer layers are sealed together along the circumferential edge and the neck edge to form a single compartment for the storage of water, the compartment having a first portion at the front panel and a second portion at the rear panel, both portions being in fluid communication with one another;
- the compartment comprises an inlet for water.
- Figure 1 displays a top view of a first cooling garment according to the invention, spread on a flat surface.
- Figure 2 displays a top view of a second cooling garment according to the invention, spread on a flat surface.
- Figure 3 displays a top view of a third cooling garment according to the invention, spread on a flat surface.
- the front panel and the rear panel of a cooling garment of the invention together form one piece with a neck opening between both panels.
- a cooling garment of the invention When a cooling garment of the invention is worn by a person, the garment is put around the person’s neck so that the neck opening is present around the neck and the garment rests on the person’s shoulders. The front panel of the garment then extends over the person’s chest and the rear panel over the person’s back.
- the cooling section of the garment constitutes that part of the garment that has the actual cooling capacity. It is also in one piece and comprises the neck opening of the garment. A first portion of the cooling section is present at the front panel of the cooling garment and a second portion of the cooling section is present at the rear panel of the cooling garment.
- the cooling section preferably does not reach to the waist of the wearer, but is more or less limited to the rib cage of the wearer. This is because cooling of the belly and of organs such as the kidneys and the stomach is usually felt as uncomfortable. Nevertheless, the front panel and the rear panel of the cooling garment itself may well reach to the waist of the wearer. This is realized by connecting a (conventional) fabric to the cooling section that lacks cooling capacity, so that the front and/or the rear panel is partly formed by the cooling section and partly by the non-cooling fabric.
- a cooling garment of the invention may comprise holes for body parts other than the neck, such as the arms.
- the cooling section itself, however, only contains a hole for the neck (the neck opening) and no holes for other body parts (as discussed below, the cooling section optionally comprises additional holes for ventilation (vent holes), but these are not suitable for accommodating body parts such as arms during wearing of the garment). Having no arm openings, the cooling section does not extend from the front panel to the rear panel under the arms of the wearer. As a result, the cooling section comprises one continuous circumferential edge at the contours of the cooling section. The only other edges of the cooling section are edges that define holes in the cooling section.
- the neck opening comprises a neck edge
- the optional vent holes comprise vent hole edges.
- the cooling section comprises a compartment for the storage of water - the water that provides the cooling upon evaporation.
- compartment is formed by two outer layers that are impermeable to liquid water, while at least one of the outer layers is permeable to water vapor. Both layers are sealed together at their edges, so that the compartment is formed.
- the edges along which the layers are sealed are the circumferential edge and the edges of one or more openings that are present in both layers, i.e. those of the neck opening and of the optional vent holes.
- the sealing of the edges brings along that a particular surface area of the outer layer is not available for the transmission of water vapor, because that part of the surface area is connected to the opposing outer layer and does therefore not enclose the compartment.
- This so-called“seal surface area” (SAseais) is thus a part of the surface of the cooling section that lacks a cooling capacity.
- a sealed edge of the cooling section typically has a width in the range of 1-10 mm, in particular in the range of 2-5 mm.
- the neck opening is formed by a hole in each layer, wherein both holes are positioned such that they align upon sealing of both layers.
- both holes are positioned such that they align upon sealing of both layers.
- the same accounts for the vent holes that are optionally present in the cooling section.
- vent holes These are holes through which a fluid may pass, wherein
- vent holes are defined by coinciding vent hole edges of the two layers;
- vent holes define an open surface area (SAvent holes).
- the term fluid is used to indicate a phase of matter that includes liquids and gases.
- the fluid that typically passes through the vent holes when an activated garment of the invention is worn is air with evaporated sweat.
- Each vent hole is a window with a particular surface area - all vent holes together define the total area of a cooling section that is available for the passage of a fluid.
- this total area is termed the“vent hole surface area” (SAvent holes) of the cooling section of a cooling garment.
- the neck opening is also a window with a particular surface area. This area is termed the“neck opening surface area”
- the cooling section comprises a“cooling surface area” (SAcooling).
- SAcooling is the surface area of the cooling section that is capable of cooling, i.e. that has a cooling capacity.
- This surface area is formed by that part of the surface of the outer layer(s) that is capable of transmitting water vapor from the compartment to the atmosphere outside the compartment. Accordingly, the neck opening, the seal surface areas and the vent holes of the cooling device are not a part of the cooling surface area (SAcooling).
- SAcooling section is defined as the surface of the cooling section as a whole, not taking into account any discontinuities such as holes and openings;
- the cooling surface area refers only to the surface of the outer layer that faces the atmosphere outside the compartment; it does not include the surface of the outer layer that faces the torso of the wearer.
- a layer of a water absorbent material (a water absorbent layer).
- a water absorbent layer prevents the sagging of the water to the lowest parts of the compartment and brings about an even distribution of the water in the cooling section.
- the layer effectively replenishes areas in the compartment where water has been evaporated by sucking up water and transporting water from other areas.
- the water absorbent material is preferably a superabsorbent polymer.
- the water absorbent layer is present between both outer layers.
- the water absorbent layer may be present everywhere between both outer layers, including in the seal. It is also possible, however, that it is excluded from the seals. This means that it is only present in the actual compartment for the storage of water.
- the water absorbent layer When the water absorbent layer is not in the seal, it has to be shaped such that is only present in the compartment for the storage of water. This can during the production of the cooling garment e.g. be accomplished by excising from the water absorbent layer all locations where a seal is to be made. Since the excising needs to be performed with a safety margin to accommodate for the tolerances of the production process (such as the tolerances of where a seal is to be made), the overall amount of water absorbent material per unit of cooling surface area (SA ⁇ oiing) is lower than when the water absorbent layer would be included in the seal (because in the latter case, the water absorbent layer is present on locations where it would not be otherwise because of the safety margin). So, there is a loss of water absorbent capacity. Compensation of this loss by e.g. providing a thicker water absorbent layer is not desired because this results in a larger surface relief of the cooling garment.
- SA ⁇ oiing overall amount of water absorbent material per unit of cooling surface area
- a loss of water absorbent capacity makes that the water in the compartment is more susceptible to gravity-induced accumulation in lower parts of the cooling section when the cooling garment is worn by a person.
- the seals may succumb or break down.
- sealing of the water absorbent layer between the outer layers decreases the chance on failure of the seal.
- Another effect of the reduction of water absorbent material per unit of cooling surface area is a loss of cooling capacity because the effective cooling surface area itself is also decreased. After all, the outer layers are not backed by the water absorbent layer at the locations of the safety margins along the seals, leading to a decrease of the effective cooling surface area. Compensation of this loss in cooling capacity by e.g. providing a thicker water absorbent layer is not effective, because this does not increase the effective cooling surface (the safety margins along the seal(s) are still void of water absorbent material).
- vent hole seal Another important effect manifests when vent holes are present in the cooling section. Their presence is accompanied with a substantial increase of seal surface area (SAvent hole seal), making the total surface of water absorbent layer that is lost to the safety margins disproportionately higher.
- Another advantage of including the water absorbent layer in the seal is that the water absorbent layer itself remains in place. When the edges of the water absorbent layer are contained in the seal, then its lateral movement relative to the outer layers is severely restricted. It will e.g. not be allowed to fold inside the compartment formed by the two outer layers, which can ultimately lead to accumulation of the water absorbent material in certain areas of the compartment.
- the fixation of the water absorbent layer also prevents the layer from sagging to the bottom of the compartment due to gravity, which may in particular happen when the layer is (highly) charged with water.
- the problem of a free-lying water absorbent layer is that it is prone to folding, accumulation and/or sagging. This will not occur in a cooling garment of the invention which has the water absorbent layer co-sealed with the two outer layers.
- a free-lying (i.e. non-fixated) water absorbent layer is that its edges may well bridge the safety margin and so reach the seals, e.g. when the cooling garment is worn by a person, especially when the person moves his/her body. Repeated contact between the water absorbent layer and the seal may result in abrasion of one or both outer layers and ultimately in a leak so that liquid water seeps out of the cooling section.
- This problem with a non-fixated water absorbent layer occurs in the absence but also in presence of the safety margin discussed above. Fixation of the water absorbent layer in the seal solves this problem as it prevents such abrasion and leakage.
- the entire cooling surface area (SAcooiing) is lined with the water absorbent layer.
- the entire cooling surface area (SAcooiing) of the cooling device can be used to transmit the evaporated water, i.e. the cooling garment has the highest cooling capacity.
- the water absorbent layer does not abut the edges that are sealed together, but stays a small distance away a from them (a safety margin), e.g. a few millimeters.
- a first part of the cooling section is present at the front panel and a second part of the cooling section is present at the rear panel of the cooling garment. The same accounts for the
- compartment of the cooling section which inherently means that the part of the compartment that is present at the front panel is in fluid communication with the part of the compartment that is present at the rear panel. Since the compartment does not extend below the armpits (i.e. it does not extend around the ribcage of the torso), the fluid communication occurs over one or both shoulders (i.e. along both sides of the neck opening). It is highly preferred, however, that there is fluid communication over both shoulders. In the present application, by fluid communication is meant that different parts or areas of the cooling section are connected to each other or are in proximity with each other to hold or be surrounded by the same fluid.
- An important advantage of fluid communication over both shoulders is that it allows cooling at both shoulders, which cooling then essentially occurs all around the neck (in addition to that provided on e.g. the chest).
- the water absorbent layer is present in the entire compartment, including directly around the neck opening (and preferably sealed together with the neck seal), muscles and blood vessels of the wearer that run from the shoulder and the chest to the neck are comfortably cooled.
- the carotid artery is also cooled in this way. Cooling of tissues at and around the neck is not only important for controlling the temperature in the wearer’s neck and head, but it also provides a significant positive psychological effect to the wearer because it adds greatly to his/her perception that his/her body is cooled.
- the compartment in the cooling section is thus completely enclosed by a material that is impermeable to liquid water. This prevents the cooling section from“sweating”, i.e. it does not expel liquid water so that the surface of the cooling section in the air does not feel humid. Instead, when water evaporates in the compartment, it may escape from the cooling section as water vapor because at least one of the outer layers of the cooling section is permeable to water vapor. It is also possible that both outer layers are permeable to water vapor.
- the water-impermeability of the outer layers not only prevents the sweating, but also the inlet of water that is required for activation of the cooling garment.
- the garment cannot be activated by simply immersing it in water. Therefore, an inlet for water is present in one of the outer layers of the cooling section. This is usually an opening in one of the outer layers, preferably the layer that is not facing the body of a wearer of the garment.
- the water inlet may in principle be positioned anywhere on the surface of the cooling element. Preferably, however, it is present at the rear panel of the garment, since this is likely most comfortable to the wearer of the garment.
- the inlet is preferably provided with a closing element that prevents water from exiting the compartment via the water inlet.
- the inlet can be closed with a zipper.
- a cooling garment of the invention comprises vent holes through which evaporated sweat may escape.
- vent holes are present at those locations of the cooling garment where the torso underneath the garment has the highest density of sweat glands. Since the holes are completely open, also radiation (in particular infrared radiation) generated by the person wearing the cooling garment may be emitted through the holes.
- the vent holes may in principle be of any shape. They may be of an elongated shape, such as a chink. They may also have a shape selected from the group of circular shape, elliptical shape, triangular shape, square shape and other polygonal shapes. Preferably, the vent holes are of a convex shape, in particular of a convex polygonal shape or a convex shape comprising a circular or non-circular arc.
- a convex shape is meant a shape wherein the line segment joining any two points of the shape is contained in the shape or in the edge of the shape.
- Convex vent holes in a cooling garment of the invention in particular have their largest cross-section in the range of 1.0-10 cm, in particular in the range of 1.0-5.0 cm. It may also be in the range of 2.0-8.0 cm or in the range of 3.0-6.0 cm. Their aspect ratio is usually in the range of 1-5 or in the range of 2-4. It may also be in the range of 1.0-4.0 or in the range of 1.5-3.0.
- the total number of vent holes in the cooling section of a garment of the invention is usually in the range of 8-100. Preferably it is in the range of 10-50, more preferably it is in the range of I Q- 40.
- a cooling garment of the invention with vent holes not only prevented accumulation of sweat between the garment and the torso of the wearer, but also gave an effective cooling effect to the wearer of the garment, as well as a pleasant experience for the wearer. This was especially the case when the ratio of cooling surface area (SAcooiing) to open surface area (SAopen) is in the range of 80:10 to 98:2.0, in particular when it is in the range of 90:10 to 95:5.0. The ratio may also be in the range of 84:16 to 97:3.0 or in the range of 88:12 to 96:4.0.
- the seal surface area (SAseais) is preferably as small as possible since it does neither contribute to the cooling capacity of the cooling section (because the area is not available for evaporation of water), nor to the ventilation capacity of the cooling section (because the area is not open as in a vent hole).
- the ratio of open surface area (SAopen) to seal surface area (SAseais) is preferably as high as possible, for example at least 60:40, at least 70:30, at least 80:20, at least 85:15, at least 90:10, at least 95:5 or at least 98:2.
- vent holes can be realized together with sufficient cooling capacity, when the ratio of open surface area to seal surface area of a vent hole is at least 60:40, in particular at least 70:30, more in particular at least 80:20 and even more in particular at least 90:10.
- a cooling section has vent holes 1 ) with a seal width in the range of 0.1 -0.5 cm; 2) with an open surface area in the range of 8-16 cm 2 ; 3) with an aspect ratio in the range of 1.0-5.0; and 4) at a number in the range of 10-30.
- Such cooling section has 1 ) a sufficiently high ratio of open surface area (SAopen) to seal surface area (SAseais) ; 2) a sufficiently high ratio of cooling surface area (SAcooiing) to open surface area (SAopen) ; and 3) vent holes that have advantageous dimensions (no too large, not too small) that allow concentrating the vent holes at desired positions.
- a cooling garment of the invention comprises a non-cooling fabric that is attached to the cooling section, in particular to the circumferential edge of the cooling section.
- Such (conventional) fabric is in particular an elastic fabric, typically a knitted fabric.
- the function of such fabric is often to reach a more appealing look of the garment and/or to obtain a tight fit of the cooling section around the torso of the wearer. A tight fit results in a better heat transfer from the torso to the garment and thus to a more effective cooling garment.
- a cooling garment of the invention comprises a cooling section that does not extend under the arm pits of a wearer. If a connection between the front panel and the rear panel is desired under the arm pits, then this has to be realized with a different material, often a
- a cooling garment of the invention may comprise
- first connection defines a first arm hole of the garment and the second connection defines a second arm hole of the garment.
- connection between the front panel and the rear panel may be permanent or releasable.
- first and/or the second connection may involve a releasable fastening means such as a zipper, velcro or buttons.
- a cooling garment of the invention Another advantage of a cooling garment of the invention is that the outer layers can efficiently be cut out of a roll of fabric to thereby generate only few scrap cuttings. This contrasts with the situation wherein the shaping of the outer layers would include the parts that reach beneath the arm pits, which parts are extremities that are more or less perpendicular to the front panel and the rear panel.
- the front panel and the rear panel are made out of one piece of material (each outer layer is made in one piece), there is no need to connect different panels of the garment. This would severely complicate the manufacture of the garment, since the connection of the panels would also require that a fluid communication between the panels is realized.
- the materials of the outer layers are preferably thermoplastic materials.
- thermoplastic is meant the property of a material, usually a polymer, that it becomes soft when heated and hard when cooled.
- both layers comprise a thermoplastic material, then this is advantageous when the sealing between bot layers is obtained by heat fusion.
- the two outer layers may, independently of each other, comprise a thermoplastic material selected from the group of acrylate polymers, acrylate copolymers, methacrylate polymers (such as poly(methylmethacrylate)), methacrylate copolymers, polyesters (such as polyethylene terephthalate), polyolefins (such as polypropylenes, polyethylenes, polymethylpentenes, polystyrenes and polybutylenes), polyurethanes, poly(ether-ester) elastomers, poly(vinylacetate), ethylene-vinyl acetate co-polymers, vinyl ester polymers, and mixtures thereof.
- acrylate polymers such as poly(methylmethacrylate)
- methacrylate copolymers such as poly(methylmethacrylate)
- polyesters such as polyethylene terephthalate
- polyolefins such as polypropylenes, polyethylenes, polymethylpentenes, polystyrenes and polybuty
- the materials of the two outer layers are often the same. This usually provides the best, and in particular the strongest, seal between both layers. In order to be fusible, however, the materials of both outer layers do not necessarily have to be the same. For example, two materials with comparable molecular structure and similar glass transition temperatures may also be fusible with each other. The person skilled in the art knows which different materials are fusible, or at least will be able to provide such materials by routine experimentation and without exerting inventive effort. When both outer layers are of different materials, then this is often for reasons of wearing comfort and/or visual appearance of the multi-layered fabric of the invention.
- the front panel is divided into a first part and a second part along a line that runs from the neck opening to the circumferential edge.
- the cooling garment may be opened on the front panel as a normal jacket with a left flap and a right flap, without splitting the compartment into two compartments. This is because each flap stays in fluid communication with the second portion of the compartment (i.e. the portion on the other side of the neck opening). This fluid communication occurs along one side of the neck opening, i.e. for each flap over one shoulder when the garment is worn).
- the front panel may be divided into a first part and a second part along a line that runs from the neck opening to the circumferential edge, wherein the first portion of the compartment of the cooling section is also divided into two parts, each part being in fluid communication with the second portion of the compartment of the cooling section.
- the first part of the front panel comprises one part of the first portion of the compartment
- the second part of the front panel comprises another part of the first portion of the compartment.
- the line that defines the division of the front panel into the first part and the second part of the front panel runs from the neck opening over the belly to the waist, when the garment is worn by a person.
- such line is perpendicular to the (imaginary) line that connects both shoulders of a person wearing the garment.
- the first part and the second part of the front panel can be attached to one another along the line that runs from the neck opening to the circumferential edge.
- the attachment may be performed by means of a zipper, velcro or buttons.
- a cooling garment of the invention has the advantage that it can be equipped with a zipper all the way from the neck opening to the waist as if it were a conventional vest not having a compartment for water that extends over the front panel.
- the zipper can be introduced without making sacrifices to the cooling properties and the comfort of the cooling garment; neither are changes required to the lay-out of the cooling section, other than introducing a seal that extends parallel to the zipper (after all, the cooling garment with zipper still comprises one single compartment for water, all portions of which are in fluid communication with one another).
- the division is in the rear panel instead of the front panel, and that the rear panel comprises a first part and a second part, wherein both parts can be attached by means of a zipper, velcro or buttons that is present at the back of the person wearing the cooling garment.
- the water absorbent layer is capable of absorbing water by the presence of a water-absorbing polymer in the layer.
- a water-absorbing polymer may be natural polymers such as cellulose, or non-natural polymers such as so-called superabsorbent polymers (SAP).
- SAP superabsorbent polymers
- the water-absorbing polymer is preferably a SAP.
- the water absorbent layer may essentially consist of the SAP, but it may also comprise an additional material that serves as a support for the SAP.
- the water absorbent layer may comprise a support material and a superabsorbent polymer.
- a superabsorbent polymer a water-swellable polymer that is capable of absorbing at least 20 times its weight in water.
- a polymer that is suitable for use as a superabsorbent polymer in a multi-layered fabric of the present invention may be a synthetic superabsorbent polymer selected from the group of polyacrylates, polyacrylamides, polyvinyl alcohols, ethylene- maleic anhydride copolymers, polyvinylethers, methylcellulose,
- the support material may in principle be the same material as the material of the outer layers, i.e. it may in principle be chosen from the list given above for the possible materials of the outer layers.
- the support material is for example a polyester or a polyolefin selected from the group of polyethylene, polypropylene, poly(ethyleneterephthalate) and (random) copolymers of polypropylene and polyethylene.
- Suitable polyethylenes include linear low density polyethylene and high density polyethylene.
- the support material comprises a (shredded) polyester or substantially consists of a (shredded) polyester.
- the support material and the SAP may in principle be present in any weight ratio.
- the support material usually constitutes up to 95 wt.% of the water absorbent layer. It may also constitute 10-95 wt.% or 25-90 wt.% of the water absorbent layer. Preferably, it constitutes 30-85 wt.% of the water absorbent layer, more preferably 40-80 wt.%.
- the SAP is usually present in such amount that it constitutes at least 2 wt.% of the water absorbent layer. It may also constitute at least 5 wt.%, at least 10 wt.% or at least 15 wt.% of the water absorbent layer.
- the SAP is preferably present in moderate amounts, for example up to 40 wt.%, up to 35 wt.%, up to 30 wt.%, up to 25 wt.%, up to 20 wt.%, up to 15 wt. % or up to 10 wt.%. All contents mentioned are based on absorbent material in the absence of absorbed water.
- the support material in the water absorbent layer may be present as fibers, e.g. particles with an aspect ratio of at least 10, more preferably at least 25.
- the aspect ratio may also be at least 50 or at least 100.
- the aspect ratio of a fiber is meant the ratio between the length of the fiber and the width of the fiber (wherein the width is the largest cross-section of the fiber perpendicular to its length).
- the width of the fibers is usually in the range of 1.0-500 pm. In particular, it is in the range of 5.0-200 pm, more in particular in the range of 10-100 pm.
- the absorbent layer that results from mixing the fibers with the SAP is stronger and is better manageable during the manufacturing of the cooling device ⁇ e.g. is not easily disrupted or deformed).
- the SAP may be present as beads but also as fibers.
- fibrous SAP is that it is easier to reach a uniform distribution of the SAP in the support material, especially it easily mixes with the support material when the support material is also present as fibers.
- the SAP is present as beads ⁇ e.g. particles wherein the largest dimension is not more than 5 times, not more than 3 times or not more than 2 times larger than the smallest dimension)
- demixing of the SAP from the support material easily occurs, which leads to a non-uniform distribution of SAP in the support material.
- the aspect ratio of fibers of SAP is preferably at least 10, more preferably at least 25.
- the aspect ratio may also be at least 50 or at least 100.
- the aspect ratio of a fiber is meant the ratio between the length of the fiber and the width of the fiber (wherein the width is the largest cross- section of the fiber perpendicular to its length).
- the width of the fibers is usually in the range of 1.0-500 pm. In particular, it is in the range of 4.0-250 pm, more in particular in the range of 6.0-100 pm and even more in particular in the range of 10-50 pm.
- the invention further relates to an activated cooling garment, wherein water is contained in the compartment of a cooling garment as described hereinabove, so that the water is absorbed by the absorbent layer and capable of permeating as a vapor through one or both outer layers after it has been evaporated in the compartment.
- the invention further relates to a method for cooling a body or an object, comprising contacting the activated cooling garment with the body or the object.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- Environmental & Geological Engineering (AREA)
- Heart & Thoracic Surgery (AREA)
- Otolaryngology (AREA)
- Professional, Industrial, Or Sporting Protective Garments (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202080053695.3A CN114173595A (en) | 2019-06-25 | 2020-06-25 | Cooling clothes |
KR1020227002269A KR20220018067A (en) | 2019-06-25 | 2020-06-25 | cooling clothing |
EP20736799.6A EP3989762B1 (en) | 2019-06-25 | 2020-06-25 | Cooling garment |
AU2020307273A AU2020307273A1 (en) | 2019-06-25 | 2020-06-25 | Cooling garment |
JP2021576916A JP2022540775A (en) | 2019-06-25 | 2020-06-25 | cooling garment |
US17/622,630 US20220338567A1 (en) | 2019-06-25 | 2020-06-25 | Cooling garment |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL2023381A NL2023381B1 (en) | 2019-06-25 | 2019-06-25 | Cooling garment |
NL2023381 | 2019-06-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2020263090A1 true WO2020263090A1 (en) | 2020-12-30 |
Family
ID=68733565
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/NL2020/050415 WO2020263090A1 (en) | 2019-06-25 | 2020-06-25 | Cooling garment |
Country Status (8)
Country | Link |
---|---|
US (1) | US20220338567A1 (en) |
EP (1) | EP3989762B1 (en) |
JP (1) | JP2022540775A (en) |
KR (1) | KR20220018067A (en) |
CN (1) | CN114173595A (en) |
AU (1) | AU2020307273A1 (en) |
NL (1) | NL2023381B1 (en) |
WO (1) | WO2020263090A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023286869A1 (en) * | 2021-07-16 | 2023-01-19 | 株式会社三機コンシス | Functional layer and cooling layer used while superimposed with functional use object |
JP7489681B2 (en) | 2021-07-16 | 2024-05-24 | hap株式会社 | Water inlet device |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11516087B2 (en) * | 2020-11-30 | 2022-11-29 | Google Llc | Connecting processors using twisted torus configurations |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4580408A (en) * | 1984-03-12 | 1986-04-08 | Stuebner Patricia A | Water vest for motocross riders |
US6134714A (en) * | 1999-04-12 | 2000-10-24 | Mustang Survival Corp. | Enhanced personal cooling garment |
WO2012156067A1 (en) | 2011-05-18 | 2012-11-22 | Tiesnitsch Beheer B.V. | Method for the manufacture of cooling parts for a cooling garment |
US20140318154A1 (en) * | 2012-01-10 | 2014-10-30 | Nichiyou Hatsumei Gallery Co., LTD | Wearable implement |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001040512A (en) * | 1999-07-22 | 2001-02-13 | Seft Dev Lab Co Ltd | Cooling clothing |
US6473910B2 (en) * | 2000-12-20 | 2002-11-05 | Kimberly-Clark Worldwide, Inc. | Cooling garment |
CN1675109A (en) * | 2002-06-03 | 2005-09-28 | 先进多孔技术有限责任公司 | Vented closures for containers |
CN201029447Y (en) * | 2007-04-06 | 2008-03-05 | 顾法超 | Garment capable of lowering temp |
EP2219483B1 (en) * | 2007-11-15 | 2013-10-16 | James Cook University | Cooling garment |
US20110296590A1 (en) * | 2010-06-07 | 2011-12-08 | Lion Apparel, Inc. | Cooling Suspenders |
US20150150313A1 (en) * | 2013-10-03 | 2015-06-04 | Adam Huckins | Cooling Vest |
US11330851B2 (en) * | 2016-05-31 | 2022-05-17 | Nike, Inc. | Apparel thermo-regulatory system |
CN109832687A (en) * | 2017-11-24 | 2019-06-04 | 广东高品压缩机有限公司 | A kind of in line portable air-conditioning clothes of changes in temperature |
-
2019
- 2019-06-25 NL NL2023381A patent/NL2023381B1/en active
-
2020
- 2020-06-25 WO PCT/NL2020/050415 patent/WO2020263090A1/en unknown
- 2020-06-25 US US17/622,630 patent/US20220338567A1/en active Pending
- 2020-06-25 EP EP20736799.6A patent/EP3989762B1/en active Active
- 2020-06-25 JP JP2021576916A patent/JP2022540775A/en active Pending
- 2020-06-25 KR KR1020227002269A patent/KR20220018067A/en not_active Application Discontinuation
- 2020-06-25 AU AU2020307273A patent/AU2020307273A1/en active Pending
- 2020-06-25 CN CN202080053695.3A patent/CN114173595A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4580408A (en) * | 1984-03-12 | 1986-04-08 | Stuebner Patricia A | Water vest for motocross riders |
US6134714A (en) * | 1999-04-12 | 2000-10-24 | Mustang Survival Corp. | Enhanced personal cooling garment |
WO2012156067A1 (en) | 2011-05-18 | 2012-11-22 | Tiesnitsch Beheer B.V. | Method for the manufacture of cooling parts for a cooling garment |
US20140318154A1 (en) * | 2012-01-10 | 2014-10-30 | Nichiyou Hatsumei Gallery Co., LTD | Wearable implement |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023286869A1 (en) * | 2021-07-16 | 2023-01-19 | 株式会社三機コンシス | Functional layer and cooling layer used while superimposed with functional use object |
JP7489681B2 (en) | 2021-07-16 | 2024-05-24 | hap株式会社 | Water inlet device |
Also Published As
Publication number | Publication date |
---|---|
NL2023381B1 (en) | 2021-02-01 |
CN114173595A (en) | 2022-03-11 |
US20220338567A1 (en) | 2022-10-27 |
AU2020307273A1 (en) | 2022-02-17 |
JP2022540775A (en) | 2022-09-20 |
EP3989762B1 (en) | 2023-10-25 |
EP3989762A1 (en) | 2022-05-04 |
KR20220018067A (en) | 2022-02-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP3989762B1 (en) | Cooling garment | |
ES2248845T3 (en) | ABSORBENT ARTICLE THAT HAS A RESPIRABILITY GRADIENT. | |
US4535481A (en) | Surgical gown for high fluid procedures | |
US20070106355A1 (en) | Body conforming textile holder and therapeutic article | |
WO2009107695A1 (en) | Absorptive article | |
JPH06233793A (en) | Surface sheet of body fluid absorptive articles | |
US20080039810A1 (en) | Liquid absorbing cooling pad | |
JP2009000173A (en) | Absorbent article | |
BR0307542B1 (en) | disposable pants-type garment. | |
JP4031035B2 (en) | Sanitary products with a double-layer topsheet having a selected distribution of large pores | |
US10413455B2 (en) | Disposable absorbent pants with containment system | |
KR20190017904A (en) | Steam Heaters and Their Use | |
KR20200125684A (en) | Warmer | |
JP2809491B2 (en) | Surface sheet for absorbent articles | |
ES2228075T3 (en) | URINE COLLECTOR. | |
KR101588726B1 (en) | Multi-layered Fabric having Heat-retaining and Refrigerant Performance | |
JPH0366366A (en) | Throw-away gown for surgical operation | |
JP2004538019A (en) | Absorbent article with breathable backsheet comprising one layer with improved capillary holes | |
JP5191250B2 (en) | Disposable absorbent article | |
MXPA01009867A (en) | Improved resilient, three dimensional polymeric film with slanted capillary apertures, and absorbent article with backsheet comprising the film. | |
JPH0435662A (en) | Surface sheet of absorbent substance | |
CN217959564U (en) | Imbibition pillow with antiseep function | |
CN214802475U (en) | Integrated protective garment | |
AU622504B2 (en) | A laminated material and diapers and pants made therefrom | |
JPH0458950A (en) | Surface sheet of absorptive article |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 20736799 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2021576916 Country of ref document: JP Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 20227002269 Country of ref document: KR Kind code of ref document: A |
|
ENP | Entry into the national phase |
Ref document number: 2020736799 Country of ref document: EP Effective date: 20220125 |
|
ENP | Entry into the national phase |
Ref document number: 2020307273 Country of ref document: AU Date of ref document: 20200625 Kind code of ref document: A |