FI64051C - SAETT ATT TILLVERKA EN FIBERPRODUKT - Google Patents

Description

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^ (11) UTLÄGGNINGSSKRIFT 64051 c (45) -. ' 7 ^; ': u: 13 -3 1933

Patent? - · ^ e dat ^ ^ (51) Kr.lk. ^ lnt.C1.3 A 61 G 7/04 SUOMI ^ FINLAND (21) P »tenttlh» kemu * - PatentansBknlng 783390 (22) Hakemltpllvi - An * öknlng * dag 07 · 11.? 8 (23) Primary Cloud - Glltlghetsdag 07 * 11.78 (41) Become Public - Blivit offentllg 09 * 05 * 79

Patent and Registration Office (44) N & htivikslpanon Ja moon!. | Ulkal $ un pvm. - n,

Patent-och registerstyrelsen 'Ansökin utlagd och utl.skriften publleerad .3U.UO.O.3 (32) (33) (31) Pyydetty etuoikeus— Begird priority 08.11 * 77

Sweden-Sverige (SE) 7712602-7 (71) Duni Bila ab, Box 152, S-301 03 Halmstad, Sweden-Sverige (SE) (72) Karl Gösta Bertil Andersson, Halmstad, Sweden-Sverige (SE) (7 *) 0 Berggren Oy Ab (5 * 0 Fiber product manufacturing method - Sätt att tiliverka en fiberprodukt

The present invention relates to a method of making a protective sheet or the like consisting of a liquid-insulating plastic film and an absorbent layer attached thereto and covering this central portion, the length of which corresponds to the length of the plastic film and is approximately half the width of the plastic film.

In the manufacture of protective sheets, it has hitherto been assumed that a liquid insulating layer is used as a smooth film supplied in a roll, with an absorbent layer glued to this layer to give two film strips on each side of the layer to be inserted under the mattress to hold the protective sheet in place. . The normal size of these 2 protective sheets is 1-1.3 m, which is why the surface area of the product must be reduced by folding, usually by multiplying by half at the center line, eg 1/8 or 1/16 of the fully applied size, due to handling. These protective sheets are characterized by the fact that when used, the patient must either be lifted or moved out of the bed in order for the protective sheet to be spread open and its membrane strips to be attached under the mattress. At least two people are required to perform this operation.

2 64051

It is an object of the present invention to provide a new method of manufacturing protective sheets which provides a final product which has substantial advantages over known protective sheets on the market, while completely eliminating the disadvantages associated with existing protective sheets with a protective sheet according to the invention. The invention is then substantially characterized in that the starting material for the liquid-insulating plastic film is a plastic film in the form of a uniform hose in a flattened state, almost equal to the width of the absorption layer and fed through the lamination gap. the adhesive thus obtained is then bent longitudinally into a C-shape so that the plastic hose surrounds the absorption layer except for the narrow central opening so that the outermost film layer of the C-shaped web of material forms the film surface of the hose, which is not glued to the absorption layer, is cut open in the middle in the longitudinal direction of the web of material and the web of material is finally cut in the longitudinal direction, so that separate pieces of material are obtained, of which the finished products formed after bending.

Thanks to the invention, a protective sheet is now obtained, the manufacture and handling of which has been simplified and the manufacturing and handling costs of which have been reduced compared with the protective sheets on the market. The manufacturing method according to the invention provides the folding of a protective sheet, thanks to which only one person can apply the delivered product to the patient's bed while the patient is lying in the bed at the same time. Thanks to the special skills of the protective sheet, the protective sheet can be easily handled when packing and unpacking and applied to the bed without touching the absorption layer, which is very important from a hygienic point of view, especially when the protective sheet is used in a hospital. Another advantage from the manufacturing point of view is that the protective sheet according to the invention is obtained as a folded product with a surface area of 1/16 of the surface of a fully applied product, by means of a fold halving only three sizes, one longitudinally and two transverse. Another advantage from a manufacturing point of view is that by using a plastic film in the form of a hose, roll widths can be used, which only need to have a width half the width of the protective sheet.

64051

The invention will now be described in more detail with reference to the accompanying drawing, in which Fig. 1 schematically shows a side view of a device used to carry out the method according to the invention, Fig. 2 shows a protective sheet folded in C-shape in longitudinal direction, folded, Fig. 5 shows a cross-section of the protective sheet shown in Fig. 2, and this cross-section also shows a web of material according to quart 1 immediately after the cutting device 10, and Figs. 6-9 show different application steps of a protective sheet made according to the invention.

As can be seen in principle from Figure 1, the invention relates to a method of manufacturing a protective sheet consisting of a liquid-insulating plastic film and. the absorption layer glued to it. To implement the method, a plastic film web in the form of a flattened hose is fed through the lamination gap. An absorbent layer web having approximately the same width as the hose is also fed through the same gap and secured to the hose with an adhesive applied to the hose before the lamination gap. The web of material consisting of the hose and the absorption layer is then folded into a C-slot, whereby the plastic hose surrounds the absorption layer with the exception of a narrow, longitudinal, central opening. If desired, the lower hose film layer, which is not attached to the absorption layer, is then cut open in the middle of the web in the longitudinal direction, after which the web is cut transversely into separate pieces or finished protective sheets which, after two folds, form the final product.

Figure 1 schematically shows an apparatus suitable for carrying out the present invention, through which a plastic film web formed by a hose 3 is flattened rolled onto a storage roll 1 and an absorption layer web 4 rolled onto a storage roll 2. These webs are later cut and folded into separate protective sheets. The absorption layer web 4 suitably has a width approximately corresponding to the flattened plastic film hose 3. These two webs 3 and 4 are drawn by means of a feed device 11 from their respective storage rolls 1 and 2 through a lamination gap 7 where the hose 3 meets the lower surface of the absorption layer web 4. Immediately in front of the lamination gap 7, adhesive nozzles 5 are arranged so that the adhesive, in this case a water-based cold adhesive, is applied to the upper surface of the hose material. Between the adhesive nozzles 5 4 64051 and the laminating gap 7 the spreading of the attached adhesive strands against the hose web 3 is effected by a transverse sweeping blade 6. After the laminating gap 7 the web 3, 4 is folded longitudinally at a device 8 which is a folding roll 9. 11, which consists of two rollers 12 and 13, either or both of which can act as a drive roller. By means of said longitudinal folding the web of material 3, 4 takes on a C-shape, so that the plastic hose 3 surrounds the absorption layer web 4 except for a narrow, central longitudinal opening 24. Before the feeder 11, the lower layer of the C-shaped hose 3 is cut open in the longitudinal direction. which mainly consists of razor blade as well as a stop. If this device 10 is disconnected, a protective cover is obtained which does not have plastic film strips and which can advantageously be used as a pillowcase in which the plastic film hose covers the pillow and the absorption layer side acts as the bed side of the pillow. Behind the feed device 11 is a device 14 which cuts the web of material 3, 4 in the transverse direction, so that separate pieces of material 23 (Fig. 2) with a longitudinal C-fold are formed. The individual pieces of material 23 are then fed over the roll 15 and subjected to a first cross-folding by means of a folding device 16. Thus, the folded pieces of material 17 are further fed over the roll 15 and the roll 18 to and over the roll 19, whereby they are subjected to a second cross-folding by means of a second folding device 20.

The pieces of material 21 with one longitudinal C-fold and two cross-folds are then fed over the roll 19 to a conveyor belt 22 for further transport to a packaging station (not shown).

Figure 2 shows on an enlarged scale what the pieces of material 23 look like after the cutting device 14 of Figure 1. Fig. 3 shows a piece of material 17 which has been subjected to a first transverse fold, and Fig. 4 shows a piece of material 21 according to Fig. 2 which has been subjected to two cross-folds and which forms the final product folded to 1/16 of its size applied with only one longitudinal C-fold. and with two cross-skills. Fig. 5 shows the piece of material shown in Fig. 2, i.e. the protective sheet 23, in cross-section. This cross section is also on the web of material 3, 4 after the opening device 10. The absorption layer 4 is surrounded by a plastic hose 3, and both are folded into a C-shape, the central longitudinal opening 24 being located on the upper surface of the body 23. Its lower surface likewise has a longitudinal slot 25 provided by an open cutting device 10.

Figures 6-9 show how only one person can apply a protective sheet made according to the invention to a bed of a patient 26. As can be seen in Figure 6, the patient is first allowed to roll to the other side, to the center of the bed, which is free. The narrow portion of the protective sheet in the path of the patient 26 is pushed or folded under the patient 26, whereby the protective sheet is locked in place. Then (see Fig. 7) the film strip below is grasped and pulled open to its full width, so that half of the absorption layer is also pulled open, after which the film strip is pushed under the mattress. As shown in Figures 8 and 9, the patient 26 is then allowed to spin to the other side, followed by the same application step as shown in Figure 7, after which the patient 26 can spin back to the center of the bed.

Claims (2)

6 64051 A method of making a protective sheet or the like consisting of a liquid insulating plastic film (3) and an absorbent layer (4) attached thereto and covering this central portion, the length of which corresponds to the length of the plastic film (3) and is approximately half the width of the plastic film (3). that the plastic film is fed as a unitary hose (3) in a flattened state through a laminating gap (7), in which a uniform absorption layer web (4) is also glued to the upper or lower surface of a flattened hose, the width of the hose (3) in the flattened state that the resulting web of material (3, 4) is then folded longitudinally into a C-shape so that the plastic hose (3) surrounds the absorption layer (4) except for a narrow, central, longitudinal opening (24) that the C-shaped web of material (3) 4) the outermost film layer consisting of the film surface of the flattened hose, which is not glued to the absorption layer (4), is cut open in the middle in the longitudinal direction of the web of material and that the web of material (3, 4) is cut in the transverse direction, so that separate pieces of material (23) are obtained. A method according to claim 1, characterized in that the pieces of material (23) are folded transversely for the first time and then for the second time after cross-cutting, whereby a final product with a surface area of only 1/16 of the surface fully applied is obtained.