FOR BABIES AND ADULTS

DESCRIPTION

Technical Field

The invention is related to a loop piece on the straps used for mechanical opening/closing structures enabling the link between the front and back parts of baby diapers and adult diapers.

The invention, as said loop piece, is especially related to use a looped nonwoven fabric obtained by forming separate loop on a loopless and nonwoven fabric and related to the method thereof.

The Related Art

According to the present technique, there are different structures used to combine the front and back sides of baby diapers and adult diapers. These structures are divided into two as adhesive and mechanical.

The closing structures defined as mechanical and used in the present technique are given in the Figure-2 and 3. The mechanical closing structures have a form made of plastic named hooked piece on both side tapes of the baby diaper. The said hooked piece enables fitting hooks and loops together when said piece is combined with the looped fabric on the front of the diaper.

The present loop piece in general is comprised of looped fabric and a thermoplastic layer. The loop fabric may be a fabric manufactured by knitting, weaving or other known techniques or may be nonwoven (Figure-2).

As an example for this, the American patent publication no. US 2005003143 is related to the method of establishing a layered composite structure comprised of a film made of standard synthetic material and looped knitted or nonwoven fabric for manufacturing especially the hooked and loop closing parts of diapers. The patent publication no. JP 2005253649 is related to the fine and perfectly elastic knitted fabric on the hooked and loop connection parts on diapers. Finally, the European patent publication no. EP 1350879 is related to the warp knitted textile fabric and the manufacturing method of this fabric. This fabric is related to the new warp knitted loop fabric used as a loop component in especially hooked and loop type, two-component fabric fastener.

An adhesive-containing interlayer as a result of combining said loop fabric and the printed or printless plastic layer through various methods such as coating, extrusion draining, glued lamination etc.

In these combination systems, in cases the printed or printless plastic layer is directly combined, the thermoplastic material is melted and then applied, therefore it is fluid. In the glued combination according to another method, the glue is liquid. These materials penetrate into loops, since they are liquid and prevent some of the loops from being free. This reduces the adherence strength of the loops, which is an unwanted result. When the glue is used less in order to reduce its penetration, the adherence strength gets low and the layers can be easily separated under pressure.

The patent publication no. TR 2007 06579 is related to a loop piece developed to solve said problem. In this piece, the loops are formed on a thermoplastic film base (Figure-3). The thermoplastic film base functions as a barrier between the printed or printless plastic layer and the loops that prevents the glue from penetration into the loops. The problem with this method is the reducing mechanical strength during the process of loop making.

Due to all these unfavorable facts, the need for making a high-strength loop piece was born.

Short Description of the Invention

The invention is made being inspired by the present situations and aims to solve the above- mentioned problems.

The primary objective of the invention is while forming a loop piece used on mechanical opening/closing structures enabling the combination of the front and back sides of the baby and adult diapers, to prevent the liquid thermoplastic piece or the adhesive material from flowing into the loops, some of the loops from being released and the adherence strength of the loops from reducing.

The invention aims to present a loop piece that is stronger than the present loop thermoplastic film in terms of breaking strength and tearing strength.

An object of the invention is to enable the diapers to enwrap the user in the best tightness and durability.

The structural and characteristic features of the invention and all its advantages will be understood more clearly with the figures given below and the detailed description written by referring to these figures and therefore, the evaluation should be done by taking these figures and the detailed description into consideration.

Figures to Help Understanding the Invention

Figure - 1 represents the layers of the strap that has the loop piece that is the subject of the invention.

Figure - 2 represents the layers of the strap that has a self-looped fabric of the previous technique. Figure - 3 presents the representative side view of the loop thermoplastic film of the previous technique.

The drawings do not have to be scaled and thus, unnecessary details might be disregarded in order to understand the present invention. Moreover, the elements that are at least substantially identical or having at least substantially same functions are shown with the same number.

Description of the Reference Numbers

10. Hooked piece 50. Self-looped fabric

11. Hook

60. Thermoplastic film

20. Loop piece

21. Adhesive

22. Plastic layer

24. Loopless nonwoven surface or fabric

26. Loop

Detailed Description of the Invention

In this detailed description, the preferred structures of the loop piece that is the subject of the invention are explained only for the purposes of understanding the subject better and without reservation.

The invention is related to a loop piece (20) used on straps having at least one hooked piece (10) to connect the front and back sides of especially baby diapers and adult diapers and formed as the counterpart for said hooked piece (10) to fasten. The novelty of the invention is that the loop piece (20) has at least one loopless nonwoven surface or fabric (24) and at least one loop (26) separately formed on it.

The preferred structure of the invention:

The nonwoven surfaces or fabrics (24) may be made preferably of, but not limited to thermoplastics such as polypropylene, polyester, viscose etc. or their specific combinations. The loop (26) on the nonwoven or fabric (24) can be made in various thicknesses in line with the requirements of the application. For forming the loops (26), various thread types can be used made of polyamide, polyester etc. or their specific combinations.

In the preferred application, the plastic layer (22) fixed under the loop piece (20) and formed as printed or printless is also preferably made of thermoplastic materials.

The process of forming a loop (26) on said nonwoven surface or fabric (24) is realized by knitting on the knitting machine or in similar ways. The preferred technique is securing the nonwoven surface (24) through the sewing - knitting technique and sewing a thread on the .

nonwoven surface (24) in a chain. However, other production techniques can also be used. The primary aspect here is that the loops (26) do not form fabric on its own, but are on a nonwoven surface or fabric (24) base, rather than on a thermoplastic film (60).

Figure-1 presents the side view of the whole loop nonwoven fabric (24) and the loop piece (20). The looped nonwoven fabric (24) is then combined with a plastic layer (22). This second layer (22) may be printed or printless. The phase of combining the looped nonwoven fabric (24) and the plastic layer (22) is carried out by laminating by adhesives like glue etc. (21) or draining / coating by the thermoplastic material extrusion method.

The protection scope of this application is identified in the claims part and it cannot be restricted to what explained above for exemplification. An expert in the technique would obviously exhibit the innovation in the invention using similar structures and/or apply this structure on other areas with similar purposes used in the respective technique. Therefore, it is obvious that such structures will be devoid of novelty criteria.