DE2345682A1 - VELVET FIXING - Google Patents

Description

COHAUSZ & FLORACK PATBNTANWALTSBÜRO J SUBMITTED

4 DÜSSELDORF 8CHÜMANNSTR. Θ7

RATENTANWXlTE: Dipl.-tng. W. COHAUSZ Dipl.-Ing. W. FLOKACK · DIpL-In ₀ . R. KNAUF Dr.-Ing., Dipl.-WirtKh.-Ine. A. GERBER

Kanebo Ltd.

Tokyo, Japan September 10th 1973

Velvety fastening

The invention relates to a velvety attachment and more particularly a solohe that can easily be attached to two parts on which a father piece and a cutter piece of the attachment »attached separately Need to become.

It is known that the velvety fastening is used on a large scale has been to releasably attach two parts. So far it is in a process for attaching the father and mother pieces When it comes to fabric, it has been crucial that these pieces are sewn to the relevant parts of the fabric. In particular with thick or very stiff fabric it is very difficult to do the above-mentioned stitching, and an inevitable consequence is a minor one Effectiveness of attachment.

The invention is based on the object of an improved velvety To create fastening, which is a very simple and easy undertaking the attachment allows.

It is known that there are different types of fortifications on the Karkt have been used successfully. Sine of it is a saratelike fortification, the one from a sheet of paper with several upright hook elements consists of a base material or carrier material and a nut piece with a number of loop elements, which are attached to a work surface provided on a carrier material in such a way that the hook elements 13sbar intervene in the sliding elements when the tater piece 2iit the Mutterst'ick is combined. Other modified velvet-like attachments stigung is one that comes from a father with a multitude

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,ORIGINAL

of engagement elements with a laterally enlarged E _o pf on each element in an arrangement upright on a carrier material and a nut piece with a plurality of Schiaufeneleraenten on a working surface of a carrier material, such that the engagement elements releasably engage the loop elements when the male piece with the Mutterstüok is combined. It should be noted that the invention is applicable to the above-mentioned known velvet-like fastenings. Thus, the term "velvet-like attachment" or "attachment" in this context means the aforementioned types of attachment.

In order to achieve the goal according to the invention, the fastening is according to the invention characterized by a father piece and a mother piece, the back sides of which each with a layer of an adhesive synthetic resin with a low melting point are coated. The melting point of the glue resin is much deeper than that of the material of the main body of the Vateretüoks and dee Mutt he piece β. Polglioh can be used in the process of Attachment of the attachment to cloth goods, the father's piece and the matted piece Attach easily and firmly by ironing at a temperature at or slightly above the melting point of the adhesive synthetic resin.

The invention is explained in more detail below with reference to the drawing. In of the drawing are:

Pig. 1 is a diagram of a velvet-like attachment according to the invention, in which partially separate elements of the male and female parts are shown, and

2 shows a detail in section through the father piece and the nut piece, shown in FIG.

According to the illustration in FIGS. 1 and 2, there is a velvet-like attachment »According to the invention from a father piece 1 - and a mother piece 2 such as with the well-known velvety Bofestiger. The father piece 1 consists of one Trägeratoff J and a variety of engaging 3 elements en 4, which of the Surface of the substrate 3 protrude upright, and made of a thin plastic -Film or a thin layer of plastic 5, the back of the de £ Backing J covered. Each single handle element is equipped with a

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BATHROOM ÖFW3INAE ..

another head at the top. On the other hand, there is Nut piece 2 made of a carrier fabric 6 and a plurality of upright ones Loops 7 that extend from the surface of the base or carrier fabric 6 protrude »and made of a plastic film or a plastic layer 8, which covers the Ettckeeite deB base or carrier fabric 6.

The carrier materials 5 and 6 and the loop elements 7 consist of synthetic fibers or threads such as polyamide fibers or threads, while the fiingriffselemente 4 e »s a polyamide monofilament or a polypropylene monofilament manufactured bind, as with the well-known velvety fastener. Mn lifter resin with a low melting point is used to produce the layers 5 and 6 used.

When the above mentioned father piece and mother piece are to be attached to textile goods, each is first placed on the goods in such a way that the back 5 or 6 touches the goods directly, then the above-mentioned superimposed materials are pressed under high temperature, wae sufficient to melt the aforementioned adhesive resin. Therefore, in order to prevent any deformation or undesirable effect on the engaging elements during attachment, the material for the loop elements and the backing and the material for the backs 5 and 8 must be carefully selected. One of the most important considerations when choosing a material is the melting point of the material. That is, the melting point of the above-mentioned synthetic resin must be significantly lower than that of the other elements of the father and mother pieces. Experiments carried out are a resin composed of a copolymer of poly-CO-laurolactam and a synthetic resin (hereinafter referred to as a core polymer of nylon 12) or a mixture of poly-laurolcatam (hereinafter referred to as Sylon 12) and a copolymer from Jfylon 12 preferable. For example, in the case of the Iylon-12-F3, which are used to produce the carrier fabrics J and 6 and the loop elements 7, while the engagement element is made from the polyporphylene monofilament, it is necessary because the. Melting point of 1Tylon 12 in a range between 178 and 160 ⁰ C and the melting point of the polypropylene monofilament is 175 C, the named copolymer of nylon 12, which is used for the backsides

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BATH

with a melting point in the range between 120 and 140 ° C to be selected.

i) a nylon 12 copolymer of this type, however, has a higher water absorption capacity compared to the polyamide resin, if the content of this copolymer in the resin is increased, the washability will decrease the part that is connected to the textile product. In other words, the bonded part's resistance to water is weakened. With regard to the problem mentioned above, tea results are ta eineinen in connection with the »following example 1 explained»

example 1

A material for the father part 1 was made by 6-nylon multiple threads (210 denier, 12 threads) and a polypropylene monofilament (0.2 mm diameter). The 6-hylin multiple thread was used for a yarn for making the carrier fabric 3, while the polyporphylene monofilament was used for the engaging element 4. The laterally expanded head 4a was prepared by heating the Spiitzenpartie of Eingriffseleaenta 4 at 300 ⁰ C. The material for the mother piece 2 was made of 6-Hylon multifilament thread (210 denier, 12 threads). The loop elements 7 were produced by roughening the surface of the carrier 6 2 coated with the adhesive Kunetharz, which was coated from the mixture of nylon 12 and a copolymer of lylon 12 to a thickness of 70 microns. In the resin mentioned, the contents of the bed parts were changed as indicated in Table 1. Then the father piece 1 and the mother piece 2 were each attached to a cotton cloth (40 ^B wide clothj warp density 146 / inch x weft density 74 / inch), namely by melting the adhesive synthetic resin, while the father piece 1 or the mother piece 2 on the cotton cloth under pressure was up. Finally, the following stability test was carried out. First the father piece of the cotton cloth was pressed against the mother piece of the cotton cloth, and then the two mentioned pieces of cotton cloth were pulled apart. to separate the engagement elements from the εchiaufenelemente. If, instead of open intervention, the father piece 1 or the nut piece 2 come easily

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from cotton tucb. could be separated, it was decided that the Binding effect of the father piece 1 or the mother piece 2 on the cotton cloth was very weak. If the father piece 1 or the mother piece 2 from Cotton tuoh could be separated before 100 repetitions of the test were made it was decided that the said binding effect was not strong in practice and if the number of repetitions of the test passed, it was decided that the said binding effect for the Practice was strong. ·

The washability of the bound material was further examined as follows. Bas father's piece and the mother piece, the one with the cotton cloth connected were washed in a normal washing machine, • and then the mentioned stability tests were repeated. The number of repeated washing tests, which indicate the number of vias washing processes, which were carried out before the father piece or the mother piece itself from the cotton tuoh are given in Table 1.

Table 1

Percent of the

Mixture of Ht. 1 <* Kr. 2 No. j Fr. 4 Kr. 5

Nylon 12 100 80 50 30 20

Copolymer τοη
Nylon 12 0 20 50 70 80

Stability very echwaoh not strong _{the atark}

to practice
Washability 15 20 20 12 5

From the above test results, Resin No. 3 was identified as the The most suitable adhesive resin for practical use is considered in this test.

If the material of the father part 1 and the hatchback 2 are treated, in order to form layers 5 and 3 on their backs, it is important to determine the optimum thickness of these resin layers 5 and 8. N »carried out Testing has been found to have a certain limit for the thickness of the resin layer there. That is, when the bead of the resin layer Exceeds a certain limit, for example 600 / U, performs the Some difficulties that arise in the following example 2

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are purified. Further, when the resin layers 5 and 8 are so thick, will the bound part of the cloth with the father or mother piece of the fastening stiff. It is therefore desirable to have layers 5 and 8 keep it as thin as possible if the aforementioned tie stability can be achieved in practice.

Example 2

The same materials for the manufacture of the tater piece 1 and the mother piece 2 as in Example 1 were used. Extrusion leveling was employed to form the resin layers 5 and 48 using a pellet mix made of nylon 12 (50 parts) and a copolymer of nylon 12 (50 parts). Several different thicknesses of these resin layers, from 70 M to 800 ti, were applied to determine the effect of the thickness of these layers. Finally, the same stability and washability tests as in Example 1 were carried out, and it was confirmed by the tests that the stability and strength of the fastening according to the invention are not influenced by the thickness of the resin brackets. However, there is a tendency to weaken the attaching ability between the engaging elements and the backbone crops 1 when the thickness of the resin layer exceeds the limit required to contribute to the binding function of the resin layer, and because the excess Resin penetrates through the carrier material after melting and covers root parts of the sole elements 7 on the front side.

After test 2, el was closed so that the preferred dioke for the resin layer is in a range between 40 and 105 f- .

As explained above in Examples 1 and 2, the Harasdichten 5 and 8 on the back of the substrates J and 6 are formed by the extrusion lamination method or a coating method is used as they are known in the textile industry.

When it is absolutely necessary to have the ^ ogennante degree of stability of the The backsides of the pieces of material can also be used to achieve carrier materials. in traditional manner using acrylic resin or polychloride hair,

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are βchlchtet "before · is the Kl ^ berKunetharzBchicht so prepared is In dieβem 7 * 11 t, the additional layer of acrylic resin or PoIychloridhare (nachetehend referred to as backing layer) eingeechloseen between the carrier and the adhesive resin layer. According to the tests carried out, however, if nylon-12-Hars or a Gemisoh of nylon-12-Earz and the copolymer of nylon-12 is used, in order to dfeB adhesive synthetic hair is used. form, the said support layer can be omitted, eo that the process for producing the velvet-like fastening according to the invention can be carried out very effectively and with lower production costs.

Expectations

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Claims (1)

Expectations 1. SaA-like fastening with a male piece made of a carrier material and a variety of essentially upright styluses derived from the front of the carrier fabric, and with a nut piece from a carrier and a multitude of im. essential upright loop elements protruding from the front of the carrier fabric, characterized by a layer (5) of adhesive Eurzharz, which the Back of the carrier fabric (5) of the father's piece (1) covered, and through a layer (8) made of adhesive synthetic resin that covers the back of the carrier fs (6) of the nut piece (2) covered, with the adhesive synthetic resin layers (5,8) of the father piece (1) and the nut piece (2) have significantly lower melting points than the material of the engagement element (4) and of the carrier material (j) dee father pieces (1) and as the material of the Sole element (7) and the carrier material (6) of the nut piece (2) to have. 2. Velvet-like fastening according to claim 1, characterized in that the adhesive synthetic resin is a resin of poly - ^ - laurolactam. 5. Velvet-like fastening according to claim 1, characterized in that the adhesive resin is a copolymer of poly - ^ - laurolactam. 54 · Seed-like fastening according to claim 1, characterized in that the adhesive synthetic resin is a mixture of poly-vM-laurolactam and a copolymer of poly-UJ-laurolactaine kist. 5. Velvet-like fastening according to claim 1, characterized in that the resin layer (5, fl), which is the back of the carrier material (5,6) of the father piece (1) or the nut piece (2) covered, a bead in the area between 40 and 150 m. 6. Velvet-like fastening according to claim 1, characterized in that the layer of adhesive synthetic resin by coating the back of the carrier material (3, 6) of the father piece (1) or the mother piece (2) dem ^ arz is formed. 7 · Velvet-like fastening according to Anipruch 1, characterized in that 27 mi «i A09814 / 0399 _ ₂ - the layer of adhesive synthetic resin by application by the extrusion lamination method on the back of the carrier material (5,6) of the father piece (1) or the nut piece (2) is seMldet. 409814/0399 Blank page