• 专利附录
  • 专利说明
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    • 专利摘要:
    The present invention provides a textile (10) which is stickable to a transparent surface, and which makes it possible to look from a space with a lower light intensity to a space with a higher light intensity but which prevents from a space with a higher light intensity. light intensity to look inside at a room with a lower light intensity The textile (10) comprises threads (11, 12) that are shear resistant with respect to each other in such a way that a textile aspect is retained and an adhesive (14) is applied on one side to the threads (11, 12) around the textile ( 10) on the transparent surface.
    公开号:BE1021944B1
    申请号:E2014/0570
    申请日:2014-07-23
    公开日:2016-01-28
    发明作者:Philippe Lampe
    申请人:Lampe Textiles；
    IPC主号:
    专利说明:

    Transparent textile with self-adhesive properties. Field of application of the invention
    The present invention relates generally to a textile, in particular a fabric or a knit that can be adhered to transparent surfaces and which makes it possible to look from a room with a lower light intensity to a room with a higher light intensity but that prevented from looking inside from a room with a higher light intensity to a room with a lower light intensity. The invention furthermore relates to a method for manufacturing such a textile.
    The invention is particularly useful in the interior design sector, in particular in the field of window decoration.
    BACKGROUND OF THE INVENTION
    Textile cloth is used in the form of curtains to shield or hide something. Often curtains are hung on the inside of an outside window.
    As an alternative to curtains, there are also films on the market that are intended to be attached to the inside of a window, to reduce incident light and / or to keep curious eyes out. Such foils can be made of paper or plastic (plastic), and often cause diffuse reflection of light. Such films offer the desired effect of keeping the curious eyes out, but have the disadvantage that visibility is also strongly restricted from the inside to the outside. Moreover, it is not always easy to apply such films without wrinkles and without trapped air bubbles. The beautiful aesthetic aspect of textiles is also not present in such films. US5728632 describes a fabric intended to be attached to a window, which at the same time prevents the window from looking from the outside to the inside, but which nevertheless allows the window to look from the inside to the outside. To this end, in a first embodiment, a fabric is provided whose weft and warp threads are pressed flat to provide a surface with linear contact. The threads of the fabric are completely coated with a resin, and an adhesive is applied to the surface of the resin-coated fabric, in lines along the threads, in order to be able to apply the resin-coated fabric to a surface. In an alternative embodiment, previously wrapped wires are woven, after which the glue is applied again, in lines along the wires. This surface of linear contact is what differentiates it from previous implementations, and is needed to obtain sufficient adhesive strength between fabric and window.
    The fabric described in US 5728632 has the disadvantage that it is not characterized by a textile aspect, because either the fiber structure is encapsulated to such an extent that it can no longer be determined, or that use has been made in both the chain and the weft of flat-pressed monofilaments. , which in themselves have no textile aspect.
    Summary of the invention
    It is an object of embodiments of the present invention to provide a textile that can be stuck to transparent surfaces and which makes it possible to look from a room with a lower light intensity to a room with a higher light intensity but which prevents room with a higher light intensity inside to look at a room with a lower light intensity, but which also has a textile aspect.
    The above object is achieved by a fabric or knit according to the present invention.
    In a first aspect, the invention provides a textile, eg, a fabric or knit, which is adhesive to a transparent surface, and which makes it possible to look from a room with a lower light intensity to a room with a higher light intensity but which prevents it to look inside from a room with a higher light intensity to a room with a lower light intensity. The fabric or knit comprises threads, and is characterized in that the threads are slide-resistant with respect to each other. This means that the wires have substantially no freedom of movement in relation to each other. By "substantially no freedom of movement" is meant that the threads can hardly, or even not at all, shift relative to each other, in particular when applying forces to the textile as applied when applying such textile to a transparent surface such as a glass plate. When rubbing the textile, the threads should not shift relative to each other. Such shear resistance of the wires can be achieved by impregnating the wires with an impregnating material, or by using a bond that gives the wires virtually no freedom of movement or by using wires that partly consist of melting fibers or that consist of bicomponent fibers with a part of the material is melted. The textile is characterized in that an adhesive is applied to the threads on one side to apply the textile to a transparent surface. The textile is further characterized in that a textile aspect is retained, in other words that its appearance is preserved as a textile material.
    It is an advantage of a textile according to the present invention that it is particularly suitable to be applied to glass, for example from windows or doors. This makes it suitable to ensure that during the day, in daylight, people can look through their windows from the inside to the outside without people looking from the outside to the inside. In that respect, a textile has an advantage over foil in that it has a textile aspect, which is tasted better by many people and is considered cozier, warmer. In addition, the openings in the textile allow for one-sided viewing.
    To ensure that the textile retains its function, the textile threads must remain substantially in the same place. This is possible in embodiments of the present invention by impregnating the wires. By impregnating the threads, the impregnation material is introduced deep into the thread, between its fibers. After the textile has dried out, the impregnation material is condensed out and the fibers stick well together. Moreover, even with fabrics, the intersections between the warp and weft threads stick together, so that the warp and weft can no longer shift relative to each other. This makes the fabric firmer and rag-free during cutting. This impregnation also greatly reduces the elasticity of the fabric, so that its application to the transparent surface becomes much easier, since there is less chance of deformation.
    Maintaining the position of warp and weft threads relative to each other at a fabric can also be made by using specific bindings that ensure that the threads have virtually no freedom of movement relative to each other. An example of such a binding is the mesh binding. In order to maintain the position even better, the threads of such fabrics with specific bonds that ensure that the threads have virtually no freedom of movement relative to each other can also be impregnated as described above.
    Maintaining the position of the threads with a knit can also be made by using specific bindings that ensure that the threads have no freedom of movement relative to each other. An example of such a binding is knitting according to a chain knit such as indémaillable. To maintain the position even better, the threads of such knits can also be impregnated as described above.
    Maintaining the position of the wires can also be made by using wires comprising fibers in which a part of the fibers or a part of the material of the fibers can melt. The threads then partly consist of bicomponent fibers or melt fibers. After weaving or knitting, the meltable portion can be melted in an oven. Due to the flow of the material, the fibers will adhere well to each other and also the intersections between the wires will adhere well together. As a result, the wires can no longer shift relative to each other.
    A major advantage of a textile according to the present invention is that the textile aspect is retained, in other words the textile remains its appearance as a textile material even after impregnation with the impregnation material or after partial melting of the threads. This is in contrast to a fabric where the threads are completely encapsulated in a resin, whereby a part or usually completely disappears the surface profile and therefore the textile aspect. According to the present invention, the textile is changed as little as possible in terms of appearance and feel.
    In a textile according to embodiments of the present invention, the impregnation material can be an acrylate. An acrylate has been found to be particularly advantageous for use as a base material for impregnating the threads because it is UV resistant, resistant to aging and little affected by temperature. Acrylate is easy to process. Acrylate has a low similar weight.
    The adhesive may also be an acrylate. An acrylate has been found to be particularly advantageous for use as an adhesive to apply the textile to a transparent surface because it is UV resistant, resistant to aging and little affected by temperature, so that the adhesive textile can be applied to both high and low temperatures. transparent surface can be applied.
    The impregnation material and the adhesive may, for example, be from the same family. If the impregnation material and the adhesive are of the same family, for example, but not limited to, both acrylates, an increased adhesion between the impregnation material and the adhesive is noted. This prevents the textile from coming loose from the adhesive, where the adhesive would stick to the transparent surface. In this way a better adhesion of the textile to the transparent surface is obtained.
    In a textile according to embodiments of the present invention, the bicomponent fiber or the melting fiber may consist of polyolefin. A polyolefin is particularly suitable to melt within a limited temperature range and to obtain sufficient flow between the fibers. Polyolefins are also highly resistant to aging, and they are easy to process.
    In embodiments of the present invention, the adhesive may be applied to the intersections of the threads. It is an advantage of a textile according to the present invention that it is possible to apply the adhesive only at the intersections between the threads. In this way, with a minimum amount of adhesive, sufficient adhesive power is nevertheless obtained to adhere the textile to a transparent surface for a long time. However, the invention is not limited thereto: the adhesive can also be applied to the threads between the intersections. Thus, in embodiments of the present invention, it is possible not only to apply glue to the intersections between the wires, but also to the pieces of wire between them. Applying more adhesive increases the adhesive power of the textile.
    For example, in a fabric according to embodiments of the present invention, the warp threads and weft threads may form a mesh bond. It is an advantage of a mesh binding that the threads within the fabric are sliding-resistant and therefore difficult to move relative to each other, so that impregnation is not necessary with this binding.
    For example, in a knitwear according to embodiments of the present invention use can be made of an email label. It is an advantage of an enamel label that the threads within the knit are slid-resistant and therefore difficult to move with respect to each other, so that impregnation is not necessary in these knits.
    In a fabric according to embodiments of the present invention, the warp threads and weft threads can form a linen weave. It is an advantage of a linen weave that it imparts a certain rigidity to the fabric, making the fabric easier to handle when applied to the transparent surface. Other types of binding between warp and weft threads are of course also possible.
    A textile according to embodiments of the present invention consists of sufficient threads to make it possible to look from a room with a lower light intensity to a room with a higher light intensity and also to prevent looking inside from a room with a higher light intensity. a room with a lower light intensity. With a fabric, the number of chains and wefts required to achieve this characteristic depends on the type of thread and the diameter of the thread used. On the one hand, the openings in the textile, for example the meshes of the fabric, must be sufficiently large to allow viewing in one direction (dark to light), on the other hand they must be sufficiently small to look through in the other direction (light to dark) ).
    The wires can be multifilament wires. Multifilament threads, compared to monofilament threads, have a higher degree of uptake of the impregnation material. Use of monofilament threads would negate the desired textile aspect.
    In a second aspect, the present invention provides a method for manufacturing a textile that is adhesive to a transparent surface, and which makes it possible to look from a room with a lower light intensity to a room with a higher light intensity but which prevents it to look inside from a room with a higher light intensity to a room with a lower light intensity. The method comprises the following steps of providing a textile, which is either a fabric with crossing warp and weft threads or a knit, making the textile threads shear-resistant in such a way that a textile aspect is retained, for example through a specific binding ( appropriate crosslinking) of the threads, or by impregnating the threads of the textile with impregnation material or partially melting the threads and applying adhesive unilaterally to at least a part of the threads.
    A method according to the present invention is easy to realize, and yet it provides pieces of textile that have sufficient adhesive power to remain attached to a transparent surface for a long time, i.e. several weeks to several months.
    Impregnation of the threads with an impregnation material can be done by means of fumigation. The threads can be impregnated before or after they have been processed into a textile.
    Impregnating threads with an impregnation material and applying adhesive to at least a portion of the threads may include applying materials of the same family. This increases the bond between adhesive and impregnation material, and consequently adhesion to each other.
    Specific and preferred aspects of the invention are included in the appended independent and dependent claims. Features of the dependent claims can be combined with features of the independent claims and with features of further dependent claims as appropriate and not merely as explicitly stated in the claims.
    To summarize the invention and the advantages achieved over the prior art, certain objects and advantages of the invention have been described above. It is, of course, understood that not all of these objectives or advantages can be achieved by any specific embodiment of the invention. Thus, for example, those skilled in the art will recognize that the invention can be embodied or implemented in a manner that achieves or optimizes one advantage or a group of benefits as provided herein, without necessarily achieving other objectives or benefits that may be offered or suggested herein.
    The above and other aspects of the invention will be clear and elucidated with reference to the embodiment (s) described below.
    Brief description of the figures
    The invention will now be further described, by way of example, with reference to the accompanying figures. FIG. 1 represents a Scanning Electron Microscopy (SEM) photo of a non-impregnated fabric. FIG. 2 is an enlargement of three intersections of the non-impregnated fabric of FIG. 1. FIG. 3 represents a Scanning Electron Microscopy (SEM) photograph of the adhesive side of a fabric according to embodiments of the present invention. This shows the impregnated warp and weft threads of the fabric. In addition, adhesive dots are visible at the various intersections of warp and weft threads. FIG. 4 is an enlargement of three intersections of the adhesive side of the fabric from the center of FIG. 3. FIG. 5 is a SEM cross-sectional view of a fabric according to embodiments of the present invention wherein the adhesive side is at the top and the non-adhesive side is at the bottom of the image. The impregnated filaments that make up the wire are visible in the section. The adhesive is visible at the top. FIG. 6 is an SEM photograph of a top view of the non-adhesive side of a fabric according to embodiments of the present invention. No adhesive is visible on this. FIG. 7 illustrates the steps in a method according to embodiments of the present invention.
    The figures are only schematic and non-limiting. In the figures, the dimensions of some parts may be exaggerated and not represented to scale for illustrative purposes. Dimensions and relative dimensions do not necessarily correspond to effective embodiments of the invention.
    Reference numbers in the claims may not be interpreted to limit the scope of protection.
    In the various figures, the same reference numbers refer to the same or similar elements.
    Detailed description of illustrative embodiments
    The present invention will be described with reference to particular embodiments and with reference to certain drawings, however, the invention is not limited thereto but is only limited by the claims.
    The terms first, second and the like in the description and in the claims are used to distinguish similar elements and not necessarily for describing a sequence, neither in time, nor spatially, nor in ranking, or in any other way. It is to be understood that the terms used in this way are suitable under interchangeable conditions and that the embodiments of the invention described herein are capable of operating in a different order than described or depicted herein.
    In addition, the terms upper, lower, top, bottom, and the like in the description and claims are used for description purposes and not necessarily to describe relative positions. It is to be understood that the terms so used may be interchanged under given circumstances and that the embodiments of the invention described herein are also suitable to operate in other orientations than described or shown herein.
    It is to be noted that the term "comprises", as used in the claims, is not to be interpreted as being limited to the means described thereafter; this term does not exclude other elements or steps. It can therefore be interpreted as specifying the presence of the listed features, values, steps or components referred to, but does not exclude the presence or addition of one or more other features, values, steps or components, or groups thereof. Thus, the scope of the expression "a device comprising means A and B" should not be limited to devices that consist only of components A and B. It means that with regard to the present invention, A and B are the only relevant components of the device.
    Reference throughout this specification to "one embodiment" or "an embodiment" means that a specific feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, occurrence of the expressions "in one embodiment" or "in an embodiment" at various places throughout this specification may not necessarily all refer to the same embodiment, but may do so. Furthermore, the specific features, structures, or characteristics may be combined in any suitable manner, as would be apparent to those skilled in the art based on this disclosure, in one or more embodiments.
    Similarly, it should be appreciated that in the description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together into a single embodiment, figure, or description thereof for the purpose of streamlining disclosure and assisting in understanding one or several of the various inventive aspects. This method of disclosure should not be interpreted in any way as a reflection of an intention that the invention requires more features than explicitly mentioned in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all the features of a single prior disclosed embodiment. Thus, the claims following the detailed description are hereby explicitly included in this detailed description, with each independent claim as a separate embodiment of the present invention.
    Furthermore, while some embodiments described herein include some, but not other, features included in other embodiments, combinations of features of different embodiments are intended to be within the scope of the invention, and constitute different embodiments, as would be understood by those skilled in the art . For example, in the following claims, any of the described embodiments can be used in any combination.
    Numerous specific details are set forth in the description provided here. It is, however, understood that embodiments of the invention can be practiced without these specific details. In other cases, well-known methods, structures and techniques have not been shown in detail to keep this description clear.
    DEFINITIONS
    By fabric in the context of the present invention is meant a textile piece of threads woven together. During weaving, a number of threads are tensioned in parallel on the loom; these are the warp threads. Subsequently, one by one, other threads are inserted perpendicular to this, between the warp threads; these are the weft threads. Where warp threads and weft threads intersect, a junction is created between the two threads, which to a greater or lesser extent (depending on the diameter of the threads) causes an elevation in the fabric.
    By knitting in the context of the present invention is meant a piece of textile from threads that are knitted together. This can be done according to one of the knitting techniques described in ISO 8388 and ISO 3572.
    With meshes is meant openings which arise as voids between the threads of the fabric and the knits. The different sides of the mesh can be different in size and shape, depending on the binding used and the number of threads used. In particular for fabrics where warp and weft threads are used, the meshes can be rectangular.
    The mesh size is the surface of the opening in the textile that is called a mesh. For a fixed wire diameter, the mesh size is controlled by providing a different number of wires per centimeter for the textile. For a fabric, the mesh size for a fixed number of warp and weft threads per centimeter varies inversely with the diameter of the warp and weft threads.
    The mesh area of a textile is defined as the sum of all mesh areas in the textile.
    A transparent textile is a textile that can be viewed through. Whether or not it is transparent is determined by the ratio of "total mesh area / total area of the textile". In the context of the present invention, transparent textiles are considered that make it possible to look from a room with a lower light intensity, for example indoors, to a room with a higher light intensity, for example outside, and at the same time prevent from a room with a higher light intensity, for example outside, to look indoors at a room with a lower light intensity, for example indoors. For this purpose, the ratio "total mesh area to total area of the textile" should be between 18% and 60%, preferably between 35% and 45%.
    Impregnation in the context of the present invention means penetrating a material, in the context of the present invention a thread, with another substance, in the context of the present invention called an impregnation material. The impregnation material may, for example, but the invention is not limited thereto, be a resin, such as for example an acrylate, or a starch derivative, for example potato starch. Low-viscous liquids with hardening properties are eligible.
    Typically, this can be done in the context of the present invention by immersing the fabric in a dispersion, an emulsion, or a solution of the impregnating material.
    Bicomponent fibers in the context of the present invention are synthetic fibers with a core-shell structure in which the core and shell consist of different polymers. The sheath is the polymer that is on the outside of the fiber. This polymer has a lower melting temperature than the polymer that is in the core. A bicomponent fiber may, for example, but the invention is not limited thereto, be a polyolefin fiber, such as, for example, polypropylene in the core and another polypropylene, with a different molecular weight and different melting temperature, for example a lower melting temperature, in the sheath.
    Fusion fibers in the context of the present invention are synthetic fibers that consist entirely of one thermoplastic polymer. The processed threads then partly consist of these fibers. The thermoplastic polymer may, for example, but the invention is not limited thereto, be a polyethylene.
    By wires that have substantially no freedom of movement with respect to each other, it is meant that intersecting or otherwise touching wires are sliding-resistant with respect to each other, and optimally do not slide at all with respect to each other. The shear resistance is determined by applying forces to the textile as applied when applying such textile to a transparent surface such as a glass plate, in order to adhere the textile to it. When rubbing the textile, the threads should not shift relative to each other.
    By fouling in the context of the present invention is meant a continuous process in which a fouling is used. Material is then passed into a trough, where it is saturated with the impregnating material. In a subsequent rolling mill, the impregnating material is introduced deeply into the wire between the fibers under the influence of pressure, and the excess of impregnating material is extorted back, so that a set amount of impregnating material remains in the wires. The impregnation material is then fixed in the textile, for example by curing during a temperature step. For this purpose, the textile can be introduced into an oven for a predetermined period of time.
    By "the textile aspect of a textile material" in the context of the present invention is meant that a fibrous structure is perceptible in the threads used. When the threads are fully encapsulated, so that the different fibers of the thread can no longer be distinguished, we say that this textile has no textile aspect. Likewise, we say that when the threads in the textile consist of monofilaments, this is a fabric or a knit with no textile aspect.
    DESCRIPTION
    In a first aspect, the invention provides a textile 10 that is adhesive to a flat transparent surface, such as, for example, glass. The textile, once applied to the transparent surface, aims to make it possible to look from a room with a lower light intensity, for example indoors, to a room with a higher light intensity, for example outside, and at the same time to prevent from looking at a room with a higher light intensity, for example outside, indoors, at a room with a lower light intensity, for example indoors. For example, the textile can be applied to a glass pane to achieve the intended objective.
    The textile 10 may, for example, be a woven textile, and may comprise crossing warp threads 11 and weft threads 12. According to the present invention, the textile is characterized in that the threads have substantially no freedom of movement relative to each other. To make the threads in the fabric more resistant to sliding, the threads can be impregnated. The warp and weft threads 11, 12 are impregnated, i.e. deeply impregnated, with an impregnation material 13. In addition, an adhesive 14 is applied to the fabric on one side to adhere the fabric to the transparent surface with that side.
    Due to its composition with impregnated threads and adhesive 14 applied thereto, the fabric can stick permanently to a smooth surface. The fabric applied in such a way ensures that a one-sided see-through effect is caused.
    In order to achieve this one-sided see-through effect, the textile must be constructed in such a way that the diameter of the threads and the size of the openings (meshes) between the threads are such that in daylight outside and no light inside, there is easy visibility outside but difficult to see inside. Different wire diameters allow different mesh sizes.
    In an advantageous embodiment the ratio of mesh surface area to total surface area is approximately 40%.
    In order to attach the textile to the transparent surface in an easy manner, it is better to provide a textile which in itself already has a certain rigidity. For this purpose, in a preferred form, a fabric may consist of a linen binding. Various other bonds, such as, for example, the mesh binding and twill bonds, are also possible, but preferably a binding is used which already gives the fabric a certain rigidity, such as the linen binding. A knit, for example, can be knitted according to the e-mail label.
    The threads 11, 12 used for a textile according to embodiments of the present invention are multi-filament threads. Such a thread consists of several fibers of the same or different materials, which run side by side or are twisted into each other. The fibers can be of either natural or synthetic origin. Examples of fibers of natural origin are: cotton, flax, viscose, hemp, wool, jute, sisal, coconut fiber, etc. Examples of fibers of synthetic origin are polyester, polyolefins, polyamides, acrylic, etc. The threads can also be composed of blends of the above fibers.
    According to the present invention, the textile is slip-resistant. This means that the threads forming the textile have substantially no freedom of movement with respect to each other, so that they can hardly move, or even cannot move at all, for example, shift with respect to each other.
    According to embodiments of the invention, the wires can be impregnated for this purpose. This can either happen before weaving or knitting, or after the threads have been processed into a textile. Impregnation can be effected, for example, by immersing the wire or the textile in an impregnating material 13, the wire absorbing the impregnating material. This absorption can take place by the material itself absorbing impregnating material (eg cotton, viscose, flax, etc.) or, in the case of synthetic fibers, the impregnating material 13 on, around and between the different fibers move thanks to capillary action. In order to obtain better impregnation, a pressure can be applied. After immersing the textile in an impregnation bath, it can be squeezed out, for example, by passing it between rolls, to remove excess impregnation material. This combination of immersion and squeezing is also referred to as forgery. During this pressing step, not only excess impregnation material is removed, but also a part of the impregnation material is pushed into the threads.
    Other suitable techniques for impregnating can also be used according to the present invention, for example spraying impregnating material, rubbing the impregnating material on the textile as a layer, or applying the impregnating material to the textile via a foam application. With each of these methods, it is important that appropriate measures are taken to ensure that the meshes 15 in the textile remain at least partially open, in order to enable one-sided visibility. This can be achieved by selective application of the impregnation material 13 substantially only on and in the threads, or, in those techniques where impregnation material 13 would nevertheless end up in the meshes 15, releasing these openings again, for example by directed blowing of air flows.
    Suitable impregnation materials 13 according to embodiments of the present invention include polyacrylates, polyurethanes, polyvinyl alcohols, polyvinyl acetates, starch derivatives.
    In particular, an aqueous acrylate dispersion can be used, for example. This has the advantage that it exhibits a high degree of UV resistance and is hardly susceptible to aging. Acrylates are completely water-insoluble after 100% polymerization, so that the treated textile is not very sensitive to moisture.
    After the textile has been impregnated and optionally pressed, the textile is dried, whereby the water evaporates and the acrylate is condensed into a reinforcing material.
    In particular, without the invention being limited thereto, the acrylate dispersion can be a mixture of a hard acrylate, a soft acrylate and water.
    Hard acrylate is a polymerized acrylate with hard properties, created by fully condensing a polymer acrylic dispersion. Such a polymer acrylate dispersion, applied or textile substrate, imparts a hard property to the textile after condensation. An example of a hard acrylate is TUBICOAT A 41, available from CHT - BEZEMA.
    Soft acrylate is a polymerized acrylic with soft, adhesive properties, created by fully condensing a polymer acrylate dispersion. Such a polymer acrylate dispersion applied to a textile substrate will cause threads and fibers to adhere to each other after condensing. An example of a soft acrylic is TUBICOAT A 22, available from CHT-BEZEMA.
    The impregnation ensures on the one hand that the threads 11,12 themselves acquire a certain rigidity, because the fibers are mutually adhered to each other. Moreover, this ensures that the entire textile has extra strength, because the intersections between the threads are also attached to each other. This ensures that the textile 10 becomes sliding-resistant, in other words that the threads 11, 12 cannot shift relative to each other, for example during the application of the textile 10 to the transparent surface. The textile 10 is therefore also fray-free, for example during cutting. The elasticity of the textile 10 is also greatly reduced by impregnation, which again facilitates application to the transparent surface because the textile 10 has less chance of deforming. Because the textile has become harder it is also easier to cut. But above all, it is an important asset of impregnation of the textile according to the invention that the textile aspect of the fabric or knit is retained. In addition, the impregnation ensures a better adhesion of the adhesive to be applied later, and ensures that as little adhesive as possible should be applied while still achieving sufficient adhesive power.
    Another way to make the textile shear-resistant is by working with threads 11,12 which partly consist of melt fibers or which consist of bicomponent fibers. These textiles can also be made slide-resistant by melting the meltable part by letting the textile go through a hot air oven, for example, or through an infrared field. As a result, the low-melting material will melt and adhere the junctions of the wires to each other. This will facilitate the application of the textile to a transparent surface and the threads will remain in the same place even with frequent reuse of the textile.
    Yet another way to make textile slide-resistant is to use, in the manufacture of the textile, specific bindings that have this property, such as, for example, the gauze binding in fabrics, or knitting according to the enamel label.
    An adhesive 14 is applied to the shear-resistant textile. This can be done in any suitable way, for example by spreading a paste over the textile, through a foam application, by spraying adhesive over the textile, or by selectively applying adhesive to the textile (dot coating), for example by means of a lick roller. . In principle, in accordance with embodiments of the present invention, it is sufficient to apply adhesive only at the intersections between the wires 11,12. It is also important that when the adhesive 14 is applied, the meshes 15 in the textile 10 remain open, or are opened again immediately after the adhesive 14 has been applied, for example by providing specifically directed air flows.
    Any suitable adhesive 14 for attaching a textile 10 to a transparent surface can be used. An acrylate is particularly suitable, for example in the form of a viscous acrylic paste. This has the advantage that it is UV resistant and resistant to aging, and low temperature sensitive (could be used at both low and high temperatures).
    An adhesive 14 in the form of an acrylate is preferably a soft acrylic, with soft, adhesive properties, but where these adhesive properties are permanently self-adhesive. An example of an acrylic adhesive is TUBICOAT STC 100, available from CHT BEZEMA.
    If the textile threads were impregnated before or after weaving or knitting, the use of an adhesive 14 of the same family as the impregnating material 13, for example both acrylates or both polyurethanes, is particularly advantageous because of their good adhesion to each other.
    The resulting shear-resistant textile 10, for the embodiment in which the threads are impregnated, has, after impregnation with impregnation material 13 and after applying an adhesive 14 according to embodiments of the present invention, on the adhesive side, this is the side on which the adhesive 14 is applied, a surface as visualized FIG. 3, and in the enlargement in FIG. 4. These show SEM photos of an impregnated fabric 10, wherein adhesive dots 14 are provided at the intersections between warp and weft threads 11, 12, according to an embodiment of the invention. It is clear that neither the impregnation material 13 nor the adhesive 14 fill the meshes 15 of the fabric 10. Outside the intersections between warp and weft threads, it is clear to see that the threads are soaked with impregnation material 13, and that the various filaments of the thread are surrounded by a thin film from the full bath treatment. As a result, the filaments of the threads stick together and the different threads also stick together. FIG. 5 shows a cross-section through a multi-filament thread, perpendicular to its longitudinal direction. This figure shows the different fibers that make up the multi-filament thread. The impregnating material, in the illustrated example acrylate dispersion, impregnates the wire, and is present between as many fibers as possible of the wire and sticks it to each other and connects them to each other as such. At various places in this figure you can see the uptake / penetration of the acrylic dispersion that has been applied as a full bath treatment. The adhesive applied on top of the impregnated fabric is also visible in the section shown in FIG. 5. This adhesive is only present on the top of the thread, and does not penetrate deep into the thread.
    FIG. 6, which shows the reverse side of the same fabric, it can be deduced that the adhesive applied to the fabric unilaterally does not penetrate to the other side. However, the impregnation material, in the proposed example the acrylate dispersion, has penetrated well between the fibers. However, this does not affect the fiber structure of the thread, which is maximally retained, so that the textile aspect of the fabric is not lost.
    A textile according to embodiments of the present invention can fulfill a function for several months in an indoor environment to make it possible to look from a room with a lower light intensity to a room with a higher light intensity but to prevent it from inside a room with a higher light intensity. to look at a space with a lower light intensity if it does not come into contact with environmental factors such as additional forces exerted on the textile applied to the transparent surface.
    The textile can be removed from the transparent surface without any problems, for example for washing a window or because something unexpectedly goes wrong when applying, and applied again. With an acrylic adhesive you can easily go through several cycles, up to tens of cycles of sticking and loosening, up to more than 40 cycles. Glue residues that remain on the transparent surface when removing the textile therefrom are minimal, and can easily be removed from the transparent surface.
    In a second aspect, illustrated in FIG. 7, the invention provides a method 50 for fabricating a textile that is adhesive to a transparent surface, and which makes it possible to look from a space with a lower light intensity to a space with a higher light intensity but which prevents to look inside a room with a higher light intensity to a room with a lower light intensity. A method according to embodiments of the present invention is schematically represented in FIG. 7. The method 50 comprises the following steps: - providing 51 with a textile, either a fabric with crossing warp and weft threads or a knit, - making the textile shear-resistant 52 by impregnating the threads of the textile with a impregnation material, or melting of the melt fibers or the bicomponent fibers - unilaterally applying adhesive to at least a portion of the threads; for example at the intersections between the wires.
    The various steps of this method have already been explained above when discussing the textile.
    EXAMPLE
    The invention will now be further elucidated with reference to the following example, without however being limited thereto.
    This example relates to a fabric made from polyester multifilament threads. The fabric consists of a linen binding in which 14 weft threads and 21 warp threads are provided per centimeter. This creates meshes with an average length of 450 micrometres and an average width of 300 micrometres. The fabric has a weight of 75 g / m2. The multifilament polyester threads in this specific example have a diameter of 200 microns and consist of 96 filaments, each of these filaments having a diameter of 10 microns.
    The fabric was impregnated in a full bath treatment. The full bath of the full bath treatment was an acrylate dispersion, which in this specific example consisted of 20 parts of hard acrylate of the TUBICOAT A 41 type, 20 parts of soft acrylate of the type TUBICOAT A 22 and 60 parts of water.
    In this specific example, the full bath treatment was applied by first passing the fabric through a full bath (foulard bin) and having a foulard press squeeze out the fabric. For this purpose, a pressure of 50 N / mm was exerted, as a result of which the acrylate dispersion was pressed into the filament, at most, between the filaments. After this full bath treatment, the fabric went through an oven at 150 ° C for 90 seconds. This heating step ensured that sufficient crosslinking of the monomers took place, giving the fabric a stronger structure than before. By performing an impregnation step as described above, a yield of 15 g / m2 was applied, which means that 15 g / m2 of impregnation product was applied through the impregnation.
    After the full bath treatment for impregnation, adhesive was applied to the impregnated fabric via a lick roll. As a result, only the tops of the fabric (intersections between warp and weft threads) came into contact with the adhesive that was applied via the lick roll. The adhesive used was a polyacrylate, a paste of the type TUBICOAT STC 100, which was applied unilaterally to the fabric at an amount of 15 g / m2.
    By applying the adhesive via a lick roll, the meshes of the fabric remained open, the textile character of the fabric was retained, and the fabric remained transparent in such a way that with greater light intensity along a first side of the fabric and lower light intensity along a second side of the fabric, there is easy transparency from the second to the first side, but a difficult transparency from the first to the second side.
    Via this method with the lick roll, the above-described fabric was selectively provided on one side with protruding parts of the fabric with the acrylate adhesive. After this application, the fabric went into an oven at a temperature of 130 ° C for 90 seconds, thereby fixing the adhesive.
    The resulting fabric was a fabric according to the features of the present invention. With its adhesive side, that is the side on which the adhesive is applied, this fabric can adhere to different surfaces, such as for instance windows. It prevents people from looking from a room with a higher light intensity into a room with a lower light intensity, but allows people to look from a room with a lower light intensity to a room with a higher light intensity.
    The foregoing description provides details of certain embodiments of the invention. It will be understood, however, that no matter how detailed the foregoing may appear in text, the invention may be practiced in many ways. It should be noted that the use of particular terminology in describing certain features or aspects of the invention should not be construed to imply that the terminology is redefined herein to be limited to specific features of the features or aspects of the invention with which this terminology is linked.
    权利要求:
    Claims (16)
    [1]
    Conclusions
    1. - A textile (10) that can be stuck on a transparent surface, and which makes it possible to look from a room with a lower light intensity to a room with a higher light intensity, but which prevents it from coming from a room with a higher light intensity look inside for a space with a lower light intensity, comprising threads (11, 12) comprising the textile (10), characterized in that the threads are slid-resistant relative to each other in such a way that a textile aspect is retained, and that an adhesive is one-sided (14) is arranged on the threads (11, 12) to apply the textile (10) to the transparent surface.
    [2]
    A textile (10) according to claim 1, wherein the threads are shear-resistant relative to each other by impregnating the threads with impregnating material.
    [3]
    A textile (10) according to claim 1, wherein the impregnating material (13) is an acrylate.
    [4]
    A textile (10) according to any one of the preceding claims, wherein the adhesive (14) is an acrylate.
    [5]
    A textile (10) according to claim 2, wherein impregnating material (13) and adhesive (14) are of the same family.
    [6]
    A textile (10) according to any one of the preceding claims, wherein the adhesive (14) is applied at least to elevations of the threads (11, 12).
    [7]
    A textile (10) according to claim 6, wherein the adhesive (14) is applied to the threads (11, 12) between the elevations.
    [8]
    A textile (10) according to any one of the preceding claims, wherein the threads (11, 12) form a linen binding.
    [9]
    A textile (10) according to any one of the preceding claims, wherein the textile (10) consists of threads (11, 12) to make it possible to look from a room with a lower light intensity to a room with a higher light intensity and also to prevent you from looking inside from a room with a higher light intensity to a room with a lower light intensity.
    [10]
    A textile (10) according to any one of the preceding claims, wherein the threads (11, 12) are multi-filament threads.
    [11]
    11. - Method (50) for manufacturing a textile (10) that can be stuck on a transparent surface, and which makes it possible to look from a room with a lower light intensity to a room with a higher light intensity but which prevents it to look inside from a room with a higher light intensity to a room with a lower light intensity, characterized in that the method comprises the following steps: - providing (51) a textile with threads (11, 12), - making it sliding-resistant of the textile in such a way that a textile aspect is preserved - the one-sided application (53) of adhesive (14) on at least a part of the threads (11,12).
    [13]
    The method (50) of claim 11, wherein the shear-proofing (52) of the textile in such a way that a textile aspect is retained comprises a specific binding of the threads (11,12).
    [14]
    The method (50) according to claim 11 or 12, wherein shearing (52) the textile in such a way that a textile aspect is retained comprises partial melting of the threads (11, 12).
    [15]
    The method (50) according to any of claims 11 to 14, wherein shearing (52) the textile in such a way that a textile aspect is retained impregnating (52) the textile threads with an impregnating material (13) includes.
    [16]
    The method (50) according to claim 15, wherein the impregnation of the threads (11, 12) of the textile (10) with an impregnation material (13) is done by means of fumigation.
    [17]
    The method (50) according to any of claims 15 or 16, wherein impregnating (52) threads (11, 12) of the textile (10) with an impregnating material (13) and applying (53) adhesive (14) ) applying at least a portion of the threads (11, 12) to materials of the same family.
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    同族专利:
    公开号 | 公开日
    BE1021857B1|2016-01-22|
    引用文献:
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    BE2014/0398A|BE1021857B1|2014-05-22|2014-05-22|TRANSPARENT FABRIC WITH SELF-ADHESIVE PROPERTIES|
    BE2014/0398|2014-05-22|EP15169007.0A| EP2946954A1|2014-05-22|2015-05-22|Transparent textile with self-adhesive properties|
    US14/719,528| US20150337487A1|2014-05-22|2015-05-22|Transparent textile with self-adhesive properties|
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