DE3138852A1 - Absorbent substrate - Google Patents

Abstract

The application relates to an absorbent substrate for absorbing and storing liquid body discharges, for example undersheets for patients, disposable diapers or sanitary towels, a liquid-absorbing body being provided on one side with a film of liquid-impermeable material having an opening or several openings, and the other side being provided with a film of liquid-impermeable material preferably free of openings, having the following features: one or both films of liquid-impermeable material (12, 14) is or are connected by lamination on the outside with an allocated absorbent, liquid-permeable nonwoven web (11) covering the openings (13) of the film (12) of liquid-impermeable material. For a sanitary towel, a nonwoven web is laminated with two strips of plastic film having a mutual spacing in the central region of the nonwoven web, the complete web thus obtained is shaped into a tube and connected at the overlapping edges by bonding or welding, and furthermore the tube contains a filling of absorbent material and the tube is closed at its two ends by bonding or welding with a transverse weld seam. <IMAGE>

Description

"Absorbent template"

The invention relates to an absorbent template for absorbing and storing liquid body discharge, such as pads for sick people, disposable diapers or sanitary towels, wherein a liquid absorbent body or fabric on one side of a Foil made of liquid-impermeable material is provided, which has an opening and has several openings and the other side with one preferably of openings is provided free film of liquid-impermeable material.

A template of the type described above is widely known, for example from German Offenlegungsschrift 25 25 988, 23 58 394 or 27 33 336.

In the case of the aforementioned known absorbent templates with Outer layer provided with openings made of a film made of liquid-impermeable Material in which the passage openings for the liquid are present, which in be absorbed by the absorbent body surrounded by the film.

The absorbent templates of the aforementioned type have the disadvantage that the openings in the film made of liquid-impermeable material have a reflux, from inside the absorbent body or material is insufficient Security can prevent. At the same time, the flow occurs only in the immediate area the openings, while in areas slightly removed from the openings the liquid sticks to the film. In connection with the also smooth film this results thus a template that is not pleasant when it is placed on the human body.

The present invention is based on the object of providing a template to create the above-described type, which in addition to the versatile use, such as a diaper, hygienic towel, mattress, incontinent pad, towel, bandage or Sorgar sanitary napkin for improved absorbency and a more comfortable fit on the human body.

To solve this problem, an absorbent template is used to absorb and storing fluid body effluents, such as documentation for the sick, Disposable diapers or sanitary napkins, with a body absorbing the liquid or fabric on one side with a sheet of liquid-impermeable material is provided, the opening or several openings and the other side with a film of liquid-impermeable material, preferably free of openings is provided, proposed according to the invention that one or both films of liquid-impermeable Material outside with an assigned absorbent and liquid-permeable, the openings of the film made of liquid-impermeable material covering nonwoven web is connected by laminations.

The inventive solution is achieved that on the body close-fitting layer made of a non-woven fabric when it is applied to the human body is comfortable because it is very soft. At the same time, according to the for nonwovens usual compositions a high absorption or absorbency for fluids, so that it is the fluids emanating from the human body soaks up immediately. This suction also takes place in the areas of passage openings the impermeable film web connected to the nonwoven web are removed. Through this there is an overall improved suction capacity because the liquid over the nonwoven fabric in a more distant area to the passage openings of the underneath located liquid-impermeable film web passed into the fabric or body who-has a very intensive capacity for absorbing and storing liquids. Also is the solution according to the invention can be used in many ways.

The plastic film web with the nonwoven web laminated to it leaves connect well with the same web, even with an intermediate layer the fleece web. The connection can be made by hot air or contact heat take place because the nonwoven web allows this connection and the particles of the plastic the film, which contribute to the connection, taken up by the nonwoven web and from this Fleece web are transferred to the plastic film on the other side, so that a bridge is formed through the nonwoven web.

The nonwoven web is preferably covered with a plastic film made of polyethylene or laminated with polypropylene. However, other plastic films can also be used Find.

As stated, the solution according to the invention can have a wide range of applications find, especially as a diaper, because the nonwoven web consists of plastic Foils covered with their passage openings and leads to a pleasant system. the However, the solution can also be used as a sheet with a very large absorption capacity.

Finally, the invention can also be used as a sanitary napkin.

In this solution, the fleece web is made up of two strips of plastic film laminated, which are at a distance from one another in the area of the middle of the nonwoven web, the overall web thus obtained is formed into a tube and to the overlapping edges are connected to one another by sealing or welding, Furthermore, a filling of absorbent material is present in the tube and the Hose at both ends by sealing or welding with a transverse weld closed is. The hose is particularly advantageous at both ends in the local area existing side folds reduced in width.

The invention is illustrated by way of example in the drawings.

They show: FIG. 1 an absorbent template in a perspective illustration, partially in section, FIG. 2 shows a vertical section through the template according to FIG. 1, FIG. 3 shows the template according to FIG. 1 in a top view with different patterns of perforations, FIG. 4 shows a further vertical section through a template, FIG. 5 shows a perspective Representation, partly in section, of a nonwoven web with two film webs, FIG. 6 the view of an absorbent template from the outside, FIG. 7 the view of the template according to Fig. 6 from the other side, Fig. 8 is a vertical section through the template according to FIG. 6, FIG. 9 shows a partial section according to FIG. 8 in an enlarged manner Representation, FIG. 10 shows a vertical section through the template according to FIG. 7.

According to Figure 1, the template 10 consists of a nonwoven web 11, which with a web 12 of plastic film is connected. The fleece web consists of one Nonwoven fabric in the form of a flexible, porous fabric belonging to the textile composite Fabric that is not made by the classic method of weaving warp and weft or by knitting, but by consolidating nonwovens was produced. The latter are loose materials made from natural and / or synthetic mostly organic fibers. The plastic film 12 has a large number of perforations 13, 13a, etc. The two webs 11 and 12 are connected with a film layer 15 made of plastic film.

The connection is made by hotmeld, hot air or contact heat in Shape of the weld seams 15, 15a and 15b shown in FIG.

Between the two upper layers 11 and 12 of the lower layers 15 is a highly absorbent fabric 24 is present, which is made of absorbent wool, cellulose, cellulose or the like can exist.

Figure 2 shows in section that the plastic film 14 on their The outside is provided with a nonwoven web 16.

Figure 3 shows that the openings 13, 13a, etc. in the plastic film web can have different shapes. So they are more circular in shape in the left part Relatively large-sized openings 13b shown in diameter, in the Center in the shape of elongated openings 13d, in the upper right part in shape of small diameter holes 13d and below in the form of slit-like Holes 13e. These last two types of holes can also be passed through Make heated needles or heated knife sections so that the edges of the holes are often provided with a small melt bead. This is possible because of this Holes or openings in the plastic film web covered by the soft nonwoven web so that the openings are not noticeable on the human body.

Figure 4 shows that the contact heat for welding the two plastic film layers 12 and 14 can also be attached through the nonwoven web 11 and 16.

Figure 5 shows that on a wide nonwoven web 11 two plastic film webs 12a and 12b are placed and connected to one another by lamination. The two Plastic film webs 12a and 12b are with the longitudinal edges of the nonwoven web 11 congruent, but have a distance X approximately in the middle of the nonwoven web 11 to each other.

After the lamination has taken place, that shown in FIG Overall path, as can be seen from FIG. 8, to form a tube turned over. Then the overlapping edges are connected to each other, namely by Hotmeld, Hot air or contact heat in the form of the longitudinal weld seam 17. From FIG. 8, however also in a larger representation from FIG. 9 it can be seen that this overlap Arrangement of the nonwoven web 11 with the plastic film web 12 the connection via the Nonwoven web layer 11 lying between the plastic films 12 takes place. This is possible, because when using hotmeld or contact heat or hot air, the plastic particles connect the plastic web 12 despite the intervening nonwoven web 11 because the nonwoven web 11 soaks up the plastic and also the approach of the two plastic webs 12 for the purpose of their connection. Before or after the formation of the tube are inserted into this absorbent body or absorbent materials 15, which also have a loose shape can have and consist of absorbent wool or cellulose or cellulose or the like can. Then the side folds 18 and 19 on the in the area of the two ends one and 20 and 21 inserted on the other side. Then the transverse welding takes place with the welds 22 and 23 in connection with a simultaneous or preceding one Cross cutting.

Figures 7 and 10, but also Figure 8, show that the between the two plastic film webs 12a and 12b existing distance X is the width of the Passage openings to the suction device 16 via the nonwoven web bridging the opening 11 there. It is thus an opening 13 that extends in the longitudinal direction and in the Center of the template extends over its entire length.

The plastic films 12 and 14 are particularly advantageous with a Embossed so that they are soft or soft when used.

work, get a higher elasticity and a quiet use guarantee.

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Claims (10)

Claims 1. Absorbent template for absorbing and storing liquid body empties, such as pads for the sick, disposable diapers or sanitary towels, wherein a body absorbing the liquid on one side with a film liquid-impermeable material is provided, which has an opening or several Has openings and the other side with a preferably free of openings Foil is also made of a liquid-impermeable material, d u r it is not noted that one or both films are made of liquid-impermeable Material (12, 14) on the outside with an associated absorbent and liquid-permeable, covering the openings (13) of the film (12) made of liquid-impermeable material Nonwoven web (11) is or are connected by lamination. 2. Absorbent template according to claim 1, d a d u r c h g e -k e n n z e i c h n e t that the two plastic films (12, 14) with the interposition of a or two fleece webs (11, 16) are connected to one another. 3. Absorbent template according to claim 1 and optionally claim 2, as you can tell that the film (11) is made of liquid-impermeable Material is embossed. 4. Absorbent template according to claim 2, d a d u r c h g e k e n n z ei c h e t that the connection through Hotmeld is available. 5. Absorbent template according to claim 2, d a d u r c h g e k e n n z e i c h e t that the connection is made by hot air. 6. Absorbent template according to claim 2, d a d u r c h g e k e n n z e i c h e t that the connection is made by contact heat. 7. Absorbent template according to claim 1 and one or more of the Claims 2 to 6, d a d u r c h g e k e n n z e i c h -n e t that the film is made liquid-impermeable material made of polyethylene. 8. Absorbent template according to claim 1 and one or more of Claims 2 to 5, characterized in that the film is made of liquid-impermeable Material consists of polypropylene. 9. Absorbent template according to claim 1 and one or more of Claims 2 to 7, characterized in that they are not valid e t that one Nonwoven web is laminated with two strips of plastic film, which are in the area of the In the middle of the flow path, the total path obtained in this way is at a distance from one another formed into a tube and sealed at the overlapping edges or Welding is connected to one another, a filling continues in the hose made of absorbent material and the hose through at both ends Sealing or welding is closed with a transverse weld. 10. Absorbent template according to claim 8, d a d u r c h g e k e'n n shows that the hose at both ends through in the local area Area of existing gussets is reduced in width.