EP1067227B1 - Fillingmaterial made of nonwoven fleece of mixed fibers - Google Patents

Description

The invention relates to a filling material made of mixed fiber fleece made of polyester fibers and cellulose fibers. - Under a fleece or According to common understanding, nonwoven is a textile Understand fabrics made of fibers, its cohesion regularly due to the fibers' own liability. Mixed fiber fleece therefore refers to one of two or more fibers composite textile fabric of the above configuration.

A mixed fiber fleece of the design described at the beginning is known from DE 44 45 085 C2. Be here used as cellulose fibers Ramie fibers, in which it is a pure natural product made mainly of cellulose is. Such Ramie fibers are characterized by a relatively good absorbency and special resistance to rotting out, however, are sensitive to what their knickund Flexural strength and consequently relaxation behavior after deformation. Hence the well-known teaching suggests a mixed fiber fleece made of polyester fibers and ramie fibers before, mostly using 60% by weight polyester is still used when used as a filler for pillows, duvets, mattress pads, sleeping bags, Clothing, etc. required elasticity available to be able to ask. In other words, the stand requires a certain minimum proportion of technology Polyester fibers so that with the use of ramie fibers necessarily related restrictions regarding the elasticity of the mixed fiber fleece do not constrict.

In addition, one knows from DE 40 30 172 C2 Mixed fiber fleece made of virgin sheep's wool and another Fiber material, namely kapok. With this mixed fiber fleece the required elasticity and moisture absorption capacity largely determined by the new wool, while the water-repellent kapok its antibacterial and putrefactive effect as well as an increased Should contribute heat insulation ability. In addition, should through the addition of the kapok the matting tendency of the New wool is reduced and the new wool its water-repellent effect can be transferred. hereby one believes a moisture balance in this regard achieve that absorbed moisture quickly again is delivered. However, this is bought with the disadvantage that such a filling material based on pure new wool hardly the current requirements for flexibility and relaxation ability a pillow, good cleanability, hygiene and taking shape stability into account at the same time an excellent moisture absorption capacity becomes. The invention as a whole aims to remedy this.

The invention is based on the technical problem Mixed fiber fleece of the configuration described above to further develop this through flexibility, good Relaxation ability and at the same time high moisture absorption capacity distinguished.

To achieve this object, the invention proposes Generic mixed fiber fleece made of polyester fibers and Cellulose fibers before that the cellulose fibers viscose fibers are. The mixed fiber fleece allows an extraordinary large variation in the proportion of polyester, the values between Can take 20 wt .-% and 80 wt .-%, because the Viscose fibers - in contrast to ramie fibers - extremely are flexible and a perfect relaxation ability have so that the polyester content compared to the Teaching according to DE 44 45 085 C2 can be significantly reduced. Polyester contents up to approx. 50 are particularly recommended Wt .-%. Finally, viscose fibers are generally used a fineness (titer) of 1 to 30 dtex, preferably 3 up to 20 dtex.

As a result, recourse to the invention opens up cellulose fibers used a variety of advantages. Because viscose fibers are cellulose fibers, which are manufactured using the so-called viscose process have been. At its core, this provides that the one of the Wood pulp initially delivered in (Soda) lye is dissolved and then the ripened Sodium cellulose is reacted with carbon disulphide. at this sulfidation produces an orange / yellow viscous mass, which is called viscose. This viscose becomes Production of a so-called spinning solution with approx. 80% by weight Water content added and pressed through spinnerets, so that the viscose (spinning) fibers on the nozzle outlet side To be available.

Depending on the variation of the spinning recipes for the viscose process can be different types of staple fibers produce. Overall, these are characterized by a good one Processability, high wet strength and flawless Flexibility paired with high water absorption.

In particular, such viscose fibers are relatively large Cavity volumes that a in bending stresses easy absorption of the fiber substance displaced in the bow guarantee. At the same time, this explains the good one Water absorption capacity or the large water retention capacity. In this context you have beyond that found that such viscose fibers contain micro voids, which is not just for quick moisture absorption worry, but also the high flexural strength of the Explain viscose fibers.

In summary, the viscose fibers are particularly large capable of absorbing the moisture that a human being emits. This works with perfect workability and besides, good suitability of such viscose fibers, taking into account their special Flexural strength. It is also viscose fiber for extremely resistant man-made fibers from natural Polymers so that problems such as rotting, matting, etc. does not matter.

The polyester fibers now ensure that the moisture either directly or excess moisture absorbed by the viscose fibers and later to the Atmosphere is transported away. This works easily in the required scope because the viscose fibers Store the absorbed moisture sufficiently and quickly can, until their complete removal via the Polyester fibers is done.

As a result, a user lies on a lower bed, for example with a filling of the mixed fiber fleece according to the invention quasi dry and feels good because he not perspired. Here are the moisture absorption and their transportation to the atmosphere in such a balanced state, that man's while sleeping Moisture released while maintaining the desired heat as dry as possible, absorbed, possibly stored and finally released into the atmosphere. in addition comes that the relaxation capacity of the lower bed and of course also the other with the mixed fiber fleece according to the invention filled items is excellent, so that Clumps, dents, etc. are not observed.

The production of the mixed fiber fleece according to the invention can be done so that the viscose fibers together with the Polyester fibers crimped or mixed after homogeneous mixing be carded to a particularly bulky fiber composite fleece to obtain. In this context, the homogeneously mixed fibers crossed, stacked and additionally partially erected. This fleece composite the intermediate transport, Filing and quilting machines fed.

The result is a particularly suitable filling material for Pillows, duvets, bed inlays, quilts, mattresses, Mattress pads, upholstery, clothing or the like created, which ensures dry heat for its user.

Claims (4)

1. A filling material for pillows, bedclothes, quilts, mattresses, mattress covers, sleeping bags or the like, consisting of a mixed fibre non-woven fabric comprising polyester fibres and cellulose fibres, characterised in that the cellulose fibres are viscose fibres.
2. A filling material according to claim 1, characterised in that the fibres are produced by the viscose process.
3. A filling material according to claims 1 or 2, characterised in that the mixed fibre non-woven fabric has a polyester content of 20 to 80 % by weight, and preferably has a polyester content of up to about 50 % by weight.
4. A filling material according to any one of claims 1 to 3, characterised in that the viscose fibres have a fineness (titre) of 1 to 30 dtex, preferably 3 to 20 dtex.