COVER CLOTH

Description

technical field

[0001] The invention relates to the technical field of textiles for harsh environments and in particular fitted sheets for these environments. State of the art

[0002] A fitted sheet is designed to provide the user with a sleeping surface while protecting the mattress. However, depending on the environment, it must be able to be properly secured to the mattress. Indeed, if the fitted sheet can be easily removed, it could be misused, particularly in harsh environments such as prisons or hospitals.

[0003] To address this problem, fitted sheets with four split corners, each with a Velcro closure, are known to be used. When the edges of the fitted sheet are inserted onto the mattress, the Velcro can hold the sheet in place. However, this type of fitted sheet can only be used on a mattress that is separate from its base and may prevent the use of strap loops. Indeed, fitted sheets known in the prior art cannot be used on one-piece beds, that is, beds with a mattress and base forming a single unit. Furthermore, they must prevent the fitted sheet from shifting relative to the mattress, particularly when a sleeping person makes a lot of movements, or from being accidentally pulled off by the movements of potentially agitated individuals, such as residents of psychiatric hospitals.

[0004] Document US4777677A discloses a fitted sheet according to the prior art.

[0005] The invention is therefore situated within this context and seeks to resolve all the aforementioned drawbacks. Thus, the invention aims to provide a secure fitted sheet that prevents it from being easily removed from the mattress while allowing it to be positioned on any type of mattress and / or support, and whose positioning allows the use of strap loops. Presentation of the invention.

[0006] The invention relates to a fitted sheet comprising a cover with a surrounding peripheral border intended to be folded down against a bed, said cover comprising at least one corner equipped with a sewing system adapted to hold said cover on the bed, in that the corner comprises a first part and a second part separated from each other by a notch, and in that the sewing system of each corner comprises a first seam adapted to form a first hem defining a first fold of the first part of the corner at the notch, and a second seam adapted to form a second hem defining a second fold of the second part of the corner at the notch; a third seam adapted to join the first hem and the second hem along the notch; a fourth seam adapted to join the first fold of the first hem and the second fold of the second hem.

[0007] The perimeter border can be adapted to fit over a bed, such as a mattress. The bed can be a two-piece unit, meaning it has a separate mattress and bed base. Alternatively, the bed can consist of just a mattress, which is then intended to be placed on a medical or standard bed. In both configurations, the fitted sheet can be folded normally under the bed base. The fitted sheet can also be used to tuck the bed in while still allowing access to the strap system located underneath.

[0008] The bed frame can be a single unit, meaning the mattress and bed base can be one piece. In this design, the fitted sheet can be used to tuck the bed in while still allowing access to the strap system located underneath.

[0009] The fitted sheet may advantageously have four corners. The four corners may be substantially perpendicular to the plane of extension of the fitted sheet and form substantially right angles so as to wrap around the mattress in order to hold the fitted sheet in position on the mattress.

[0010] The first and second hems can be defined by a seam at the fold. The first and second hems can be intended to be opposite each other.

[0011] The fourth seam may be intended to reinforce the angle and thus prevent the seams from tearing.

[0012] Advantageously, the fitted sheet has at least two comfort layers and two layers of fabric on either side, and the third seam is adapted to hold together the two comfort layers and the two layers of fabric of each of the folds when assembling the first hem and the second hem.

[0013] Each comfort layer may have a density of approximately 80 g / m².

[0014] Advantageously, the fitted sheet has four comfort layers and two fabric layers.

[0015] Using four comfort layers and two layers of fabric creates a fitted sheet that is both soft and comfortable. This combination also makes the fitted sheet difficult to twist, preventing injury or the risk of the user attempting to hang themselves.

[0016] Advantageously, the third seam is adapted to hold together eight layers of comfort and four layers of fabric.

[0017] The third seam can help to stiffen the angle.

[0018] Advantageously, each comfort layer comprises at least 80% aromatic polyamide, 10 to 19% aramid and 1 to 5% antistatic fibers.

[0019] The composition allows it to meet the M1 standard, meaning that the cover is non-flammable and does not release smoke in case of fire.

[0020] Aramid can be adapted for tear resistance.

[0021] Anti-static fibers can make the fitted sheet more pleasant and can help prevent the formation of static electricity by friction between the fitted sheet and the mattress cover.

[0022] Advantageously, aromatic polyamide is a meta-aramid.

[0023] Advantageously, the fitted sheet has no means of attachment.

[0024] The absence of attachment points can make it possible to avoid the use of elastic bands, for example, and therefore the risks to the user.

[0025] The fitted sheet can be held in place on the mattress by the peripheral edge of the fitted sheet against the mattress.

[0026] Advantageously, the fitted sheet has a cross seam on its surface designed to form quilting.

[0027] Quilting can improve the stability of the different layers. Quilting can stiffen the fitted sheet by better securing the layers together, thus making it more difficult for the fitted sheet to twist.

[0028] Advantageously, the peripheral border of the cover has a dimension of at least 30 cm.

[0029] This dimension can help ensure that the fitted sheet stays securely in place on the mattress and / or bed base.

[0030] Another aspect of the invention relates to a method of manufacturing a fitted sheet comprising the following steps: sewing a first part of a corner of said sheet to form a first hem having a first flap and a second part of a corner of said sheet to form a second hem having a second flap; sewing the first hem and the second hem to form a corner; sewing the first flap of the first hem and the second flap of the second hem.

[0031] The first and second hems can make the comfort layers inaccessible. Brief description of the figures.

[0032] Other advantages and features of the present invention are now described by means of purely illustrative and in no way limiting examples of the scope of the invention, and from the accompanying drawings, in which the various figures represent: [ Fig. 1 [ ] schematically represents a fitted sheet viewed from below before the corners of a fitted sheet are sewn according to an embodiment of the invention. ] Fig. 2 [ ] schematically represents an internal view of the first and second seams of a corner sewing system for a fitted sheet according to an embodiment of the invention. Fig. 3 [ ] schematically represents an internal view of a third seam of a corner sewing system for a fitted sheet according to an embodiment of the invention. ] Fig. 4[ ] schematically represents an interior view of a fourth seam of a corner sewing system of a fitted sheet according to an embodiment of the invention

[0033] In the description that follows, identical elements, by structure or by function, appearing on different figures retain, unless otherwise specified, the same references. Description of the implementation methods.

[0034] We have represented in [ Fig. 1 ] a view from below of a fitted sheet 1 according to one embodiment. The fitted sheet 1 is also described in relation to the [ Fig. 2 ], [ Fig. 3 ] And [ Fig. 4 ] each showing an interior view of a stitching system at one corner of a fitted sheet 1. The [ Fig. 2] to [Fig. 4 ] describe the different stages of the fitted sheet manufacturing process 1.

[0035] The fitted sheet 1 described in [ Fig. 1The fitted sheet includes a cover with a perimeter border 10 designed to fit over a mattress. The perimeter border 10 is intended to be folded down against the mattress. The perimeter border 10 of the fitted sheet 1 is approximately 30 cm wide.

[0036] Fitted sheet 1 comprises four comfort layers and two fabric layers placed on either side of the comfort layers. Each comfort layer has a density of approximately 80 g / m². Fitted sheet 1 is therefore thick, and the different layers are held together by cross-stitching, forming a mesh and quilting. Each comfort layer contains at least 80% aromatic polyamide, 10 to 19% aramid fibers adapted for tear resistance, and 1 to 5% antistatic fibers adapted to limit the formation of static electricity.

[0037] The fitted sheet 1 has four corners 11. Each corner 11 is equipped with a sewing system 12. The four corners 11 are substantially perpendicular to the extension plane of the fitted sheet 1.

[0038] The sewing system 12 is designed to hold the fitted sheet 1 onto the mattress. Each corner 11 has a first part 110 and a second part 111. The first part 110 and the second part 111 are separated by a notch 112. The sewing system 12 for each corner has a first seam 120 forming a first hem that defines a first fold 120.1 at the notch. The sewing system 12 for each corner has a second seam 121 forming a second hem that defines a second fold 121.1 at the notch. Each of the first and second hems can be defined by a seam at the fold. Each pair of first and second hems is intended to be opposite each other.

[0039] The stitching system 12 at each corner includes a third stitch 122 adapted to join the first hem and the second hem along the notch 112. The third stitch 112 stiffens the corner 11. The third stitch 112 holds together the first stitch 120 and the second stitch 122 of the second hem.

[0040] The stitching system 12 at each corner includes a fourth stitch 123 to join the first fold 120.1 of the first hem and the second fold 121.1. The fourth stitch 123 reinforces the corner 11 and prevents the user from tearing the entire set of stitching.

[0041] Due to the presence of the four seams, fitted sheet 1 has no means of attachment.

[0042] The manufacturing process for obtaining a fitted sheet 1 of this type includes a step of folding the first part 110 of the corner 11 onto itself so that a first hem is formed. The first hem is formed by applying a first seam 120 at the right side of the notch 112 defining a first fold 120.1.

[0043] The process then includes a step of folding the second part 111 of the angle 11 back on itself so that a second hem is formed. The second hem is formed by applying a second seam 121 at the right side of the notch 112 defining a second fold 121.1.

[0044] Once the first and second hems are made, they are held together by the application of a third seam 122 applied at the level of the first seam 120 and the second seam 121. At this stage, the first fold 120.1 and the second fold 121.1 are free.

[0045] When the first part 110 and the second part 111 of the angle 11 are joined by the third seam 122, the first fold 120.1 and the second fold 121.1 are fixed together by the fourth seam 123.

[0046] The preceding description clearly explains how the invention achieves its stated objectives, namely to offer a secure fitted sheet that prevents it from being easily removed from the mattress while allowing it to be positioned on any type of mattress and / or support and whose positioning allows the use of strap loops, by offering a fitted sheet comprising a cover with an enveloping peripheral border intended to be folded against a bed, said cover having at least one corner equipped with a sewing system adapted to hold said cover on the bed, in that the corner has a first part and a second part separated from each other by a notch, and in that the sewing system of each corner has a first seam adapted to form a first hem defining a first fold of the first part of the corner at the notch,and a second seam adapted to form a second hem defining a second fold of the second part of the angle at the right side of the notch; a third seam adapted to join the first hem and the second hem along the notch; a fourth seam adapted to join the first fold of the first hem and the second fold of the second hem.

[0047] In any event, the invention cannot be limited to the embodiments specifically described in this document, and extends in particular to all equivalent means and to any technically operative combination of these means.

Claims

1. Cover sheet (1) comprising a cover with an enveloping peripheral edge (10) intended to be folded down against a bed, said cover comprising at least one corner (11) provided with a sewing system (12) suitable for holding said cover on the bed, in that the corner (11) comprises a first part (110) and a second part (111) separated from each other by a notch (112), and in that the sewing system (12) of each corner (11) comprises: a first seam (120) suitable for forming a first hem defining a first fold (120.1) of the first part (110) of the corner (11) at the notch (112), and a second seam (121) suitable for forming a second hem defining a second fold (120.1) of the second part (111) of the corner (11) at the notch (112); a third seam (122) suitable for joining the first hem and the second hem along the notch (112); a fourth seam (123) suitable for joining the first fold (120.1) of the first hem and the second fold (121.1) of the second hem.

2. Cover sheet according to the preceding claim, characterized in that it comprises at least two comfort layers and two fabric layers on either side, and in that the third seam is suitable for holding together the two comfort layers and the two fabric layers of each of the folds when joining the first hem and the second hem.

3. Cover sheet according to claim 2, characterized in that it comprises four comfort layers and two fabric layers.

4. Cover sheet according to either claim 2 or claim 3, characterized in that the third seam is suitable for holding together eight comfort layers and four fabric layers.

5. Cover sheet according to any of claims 2 to 4, characterized in that each comfort layer comprises at least 80% aromatic polyamide, 10 to 19% aramid and 1 to 5% antistatic fibers.

6. Cover sheet according to the preceding claim, characterized in that the aromatic polyamide is a meta-aramid.

7. Cover sheet according to any of the preceding claims, characterized in that it is devoid of fastening means.

8. Cover sheet according to any of the preceding claims, characterized in that it has on its surface a crossed seam suitable for forming quilting.

9. Cover sheet according to any of the preceding claims, characterized in that the peripheral edge of the cover has a dimension of at least 30 cm.

10. Method for producing a cover sheet according to any of claims 1 to 9, comprising the following steps: - sewing a first part of a corner of said sheet to form a first hem comprising a first flap and sewing a second part of a corner of said sheet to form a second hem comprising a second flap; - sewing the first hem and the second hem to form a corner; - sewing the first flap of the first hem and the second flap of the second hem.