DE2313935A1 - FIXING PAD - Google Patents

Description

PATENT ADVOCATE 2313935 • MO «Ml > M | Z
m oran-ai MM DR. HELGA WEISSENFELD HBfeH
turf « (MeBBTl
Kars 1973 Graduate chemist TW * » W / Ho ON 646 DrI

Applicant: Carl Freudenberg »Weinheim

Fixing insert

The invention relates to a novel fixing insert which can easily be ironed open with Oberst in the manufacturing process of clothing and which does not peel off during washing and dry cleaning. In recent years, various types of .Fixiereinlagen were developed with thermoplastic adhesives in powder, fiber and film form on the basis of materials or impregnated paper, and these are used by most clothing manufacturers to streamline their Herstellungsprosesse and the production of quality fabrics, by ironing them with previously cut outer fabrics or linings instead of sewing them together.

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In most cases the above-mentioned conventional Inlays, polyethylene were used as an adhesive, and these inlays were only used for fixing small parts like collars, cuffs, saunas, etc., used as a "timer", as this changes the outer fabric or the putter after fixing to the touch, and since their adhesive strength and their resistance to washing and cleaning are not sufficient.

There is therefore a need for development of novel fixing materials for the entire front fixing in the manufacture of large parts such as suits, jackets Coats, etc, which are the process of making clothes streamline without causing deterioration in finished garments.

I.e. clothing manufacturers want to streamline their manufacturing process by using a conveyor belt Rotary hot ironing lining on cut outer fabrics iron on to shorten or notify sewing processes such as attaching EU lining *

But in order to be able to carry out such full front fixing, special fixing agents with sufficient fixing power and washing and cleaning resistance are necessary. These essential requirements are met by thermoplastic adhesives such as those used with conventional fixation inserts used is not met.

This means that polyethylene adhesives are not sufficient in terms of fixing power and resistance to cleaning. The fixing power and cleaning resistance of polyamide adhesives are sufficient, but their washing resistance is not enough, and they can be steamed for long kisses in order to fuse completely, and furthermore, if they contain plasticizers, for example, they can deteriorate through Cause the plasticizer to migrate during storage or to cause stickiness due to the softening of the adhesives, etc.

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Polyvinyl acetate adhesives also sometimes cause Peeling at relatively high temperatures compared to other adhesives.

In view of the above situation, the inventors have made various studies in order to obtain a to develop an excellent fixing pad which has sufficient fixing power and washing and cleaning resistance, and found that terpolymer resins which contain styrene, acrylonitrile and alkyl acrylate, excellent fixation power and durability, especially have well-balanced resistance to both washing and cleaning.

As an application example from the textile sector, it was already known that styrene-acrylonitrile-alkyl acrylate terpolymers had the coloring properties of synthetic ones Acrylonitrile-based fibers improved, but the application of thermoplastic adhesives for Fixation pads were not yet known. Fixing inserts are proposed according to the invention, with Resins composed of thermoplastic adhesives with 3-30 weight percent styrene, 20-50 weight percent Acrylonitrile and 20-77 percent by weight of alkyl acrylate with the alkyl radical with 1-4 carbon atoms per 100 Percent by weight of terpolymer, the terpolymer has a relative viscosity in the range of 0.3-0.7 (determined in dimethylformamide at 30 ° C) and a melting range of 60-150 ° C.

This terpolymer is applied as a powder, fiber or film to a base (fabric or impregnated Paper) or is moistened as a fixation alone, without a base.

The composition of this invention is as follows described: According to the invention applicable terpolymers on styrene,

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Acrylonitrile and alkyl acrylate are based on the polymerization of styrene, acrylonitrile and alkyl acrylate (e.g. methyl acrylate, xethyl acrylate, propyl acrylate or butyl acrylate) by conventional polymerization processes, e.g. emulsion polymerization, suspension polymerization, solution polymerization or the like.

For example, aqueous or organic suspensions of styrene, acrylonitrile, alkyl acrylate, catalyst and if necessary, polymerization regulator and emulsifier, in a reaction vessel with stirrer, reflux condenser and thermometer filled, and at the required temperature in a nitrogen atmosphere polymerized for the required time. The resulting terpolymer made of styrene, acrylonitrile, alkyl acrylate is separated with the salting out method or the solvent precipitation method, with water, alcohol or mineral spirits washed and dried.

This gives a white or slightly yellowish, solid terpolymer of styrene, acrylonitrile and alkyl acrylate. Alkyl acrylate, one of the components of the terpolymer, contains an alkyl radical with 1-4 carbon atoms and is a compound such as methyl acrylate, ethyl acrylate, Propyl acrylate or butyl arylate.

As a thermoplastic adhesive according to the present invention, ethyl acrylate has proven particularly useful because it is particularly easy to manufacture, has particularly good adhesiveness and excellent durability possesses both washing and cleaning.

Persulfates, peroxides such as hydrogen peroxide, organic peroxides such as benzyl peroxide or cumene hydroperoxide, redox catalysts, which can be obtained by combining the above Peroxides can be obtained with reducing agents, or the like can be applied.

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As polymerization regulators, known polymerization regulators such as, for example, alkyl mercaptans, e.g. Lauryl mereaptane or alkylamines such as diethylamines, alkanolamines such as monoethanolamines, chlorinated hydrocarbons such as carbon tetrachloride, trichlorethylene or the like can be used either individually or in combination.

Substances known per se can be used as emulsifiers, but anionic compounds are particularly suitable such as najttrium lauryl sulfide or non-ionogenic Agents such as polyethylene glycol, alkylphenyl ethers, which can be used individually or together. When used in quantities, these compounds are particularly suitable for the terpolymers according to the invention, since they react both as emulsifiers and as polymerization regulators.

In addition, acrylamides and their derivatives are vinyl acetate Methacrylonitrile, vinyltQluol, divinylbenzene, acrylic acid, Glycyzyl methacrylate, alkyl methacrylate or other alkyl acrylates used as co-monomers that can be polymerized with styrene, acrylonitrile and alkyl acrylate. One or more of the above polymers can be used interchangeably.

To styrene-acrylonitrile-alkyl acrylate terpolymers according to the invention To obtain, one need only select suitable conditions for the polymerization reaction, such as the particular one Concentration of the three monomers, the method of addition and the type and amount of catalysts, solvents, polymerization regulator, emulsifier, etc., the stirring speed at the Reaction etc.

As mentioned above, terpolymers made from styrene, acrylonitrile, Alkyl acrylate consisting of 3-30 percent by weight styrene, 20-50 percent by weight acrylonitrile and 20-77 percent by weight alkyl acrylate with the alkyl radical with 1 ^ 4 carbon atoms and the relative viscosity in the range of 0.3-0.7 (in

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Dimethylformamide at 30 ⁰ C is determined) and a melting range of (jO - 150 ° C are obtained in this way This Terpolymerssate satisfy all the conditions for thermoplastic adhesives for fusible..

Namely:

1. to fuse at a temperature at which the outer fabrics The putter and, if applicable, the removable backing are not damaged or worn, and sufficient fixing force to own after they have been ironed with the fabrics.

2. Having the correct viscosity when melting and not having a breakdown as with low viscosity and slackening the fixing force, "caused by poor adaptation to the outer fabrics" in the case of excessively high viscosity.

3. the necessary properties for processing such as Powders, crushing, filming, spinning, and the like.

4. To be resistant to heat, water, and alkali Solvent, which is essential for fixations.

5. Not to impair the characteristic "feel" of the outer fabric.

6. to have no embrittlement as with thermosetting synthetic resins.

7. No wandering additives such as B. to need plasticizers.

8. Inexpensive processability.

The reasons for limiting the respective percentages of styrene, acrylonitrile and alkyl acrylate in the inventive Terpolymers based on 3-30 percent by weight styrene, 20-50 percent by weight acrylonitrile and 20-77 percent by weight alkyl acrylate are:

If the styrene content is less than 3 percent by weight, the resulting terpolymers are inferior, which increases the resistance to water and alkali, and the fixation with these polymeric adhesives is not particularly durable while washing.

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If the styrene content is more than 30 percent by weight, the terpolymers are not solvent-resistant, which means that fixing with such a thermoplastic resin is not suitable for dry cleaning. If the acrylonitrile content is less than 20 percent by weight or the alkyl acrylate content is higher than 77 percent by weight, the resulting terpolymers have poor durability Treatment with water, alkali and solvents, and fixings with these terpolymers as an adhesive mass, are poor Durability properties after ironing, especially when it comes to washing and dry cleaning.

In addition, an acrylonitrile content of more than 50 percent by weight or an alkyl acrylate content of less than 20 percent by weight has the disadvantage that the melting point only reaches 150 ° C lies.

Therefore, fixings with these terpolymers as adhesive mass are not suitable for fixing outer fabrics, and if so If such fixings are ironed on at a high temperature, some outer fabrics will be damaged in the process.

The relative viscosity of styrene-acrylonitrile-alkyl acrylate Terpolymer of this invention is 0.3-0.7 (dl / g) in dimethylformamide at 30 ° C.

Terpolymers with a relative viscosity of less than 0.3 are used as thermoplastic adhesives The adhesive strength of the fixings is insufficient, or the outer fabrics are spoiled, the grip of the outer fabrics becomes impaired, as those terpolymers tend, due to their low viscosity, when fixing in the outer fabrics to penetrate.

On the other hand, when terpolymers are used as fixing agents, the relative viscosity of which is more than 0.7 the fixing force of the fixings is also inadequate, since these terpolymers do not work at all due to their high viscosity penetrate into the outer fabric, and if you try to iron on these fixings at high temperature, they can become too

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fixing substances are damaged.

Furthermore, is the melting temperature of styrene-acrylonitrile-alkyl acrylate terpolymer of this invention in the range 60-150 ° C, and the melting temperature of these terpolymers, which is required for the fusion of the fixations with these terpolymers as adhesive material, is höehstensl50 ° C. Namely the melting temperature is higher than 150 ° C, the terpolymers are not suitable for fixation _s because the conditions required for fixation * can damage outer fabrics.

On the other hand, however, when the melting point of the terpolymers is lower than 60 ° C, the terpolymers become soft with increasing temperature and hence the fixing force decreases.

That is, the fixing power of fixings with such easy-melting terpolymers as the adhesive material deteriorates when they are washed at a high temperature or dry- cleaned.

Melting temperature, as described here, is the temperature at which polymers soften when heated and, in addition, their viscosity drops rapidly.

In general, it is determined by the temperature at which polymers, when heated, soften and begin to flow at constant pressure.

In addition, the melting temperature can also be determined by the temperature at which the terpolymer begins to flow with the aid of an extruder suitable as a blowing test device operating at constant pressure.

Fixings with these terpolymers as fixing agents develop their properties completely when they are peened at the above-mentioned temperature or a slightly higher temperature, but the outer fabrics are not damaged .

These terpolymers are used as thermoplastic adhesives in powder, fiber or film form.

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The manufacturing methods of pixie inserts with styrene-acrylonitrile-alkyl acrylate terpolymer in any form as thermoplastic adhesive are as follows:

1st method: Fixing said terpolymer powder, which by

the "milling method" or "precipitation method" is obtained on the surface of woven or non-woven outer fabrics by scattering and fusing.

2nd method: fixing the dissolved or melted terpoly

merisats on the surface of woven or non-woven outer fabrics by point or spider web-shaped spraying from a nozzle, then Drying or cooling.

3rd method: fixing the terpolymer solution or dispersion

or the powder on the surface of woven or non-woven face fabrics by printing in dot or checked patterns.

¹ J. Method: Establishing a net-like fixation by spraying or spinning the dissolved terpolymer onto the surface of impregnated paper and removing the solvent or cooling.

5th method: making fixation by rolling out a Films made from the terpolymers with impregnated paper or fabrics, (woven or non-woven)

Fixations for ironing purposes, obtained from the methods described above, have the following advantages:

a) Fuser pads of this invention provide excellent bonded products with excellent bond strength without the Impact "grip" of the material to be fixed.

b) Products fixed by this invention have excellent laundry and dry cleaning resistance, and are natural Garments fixed with it are very durable.

c) Fixations of this type facilitate temperature control

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the ironing machine, as the temperature range required for ironing is 100-180 ° C, and more the fixed products have excellent fixing power.

d) Styrene-acrylonitrile-alkyl acrylate TerpοIymer als heat-sensitive 'Adhesives can also be used as a fixation that fused at a relatively low temperature must be because their fixing power and durability are excellent even when the terpolymers that are already in Melting at a relatively low temperature, such as 60 - 100 ° C, can be used as the adhesive compound.

e) Heat-sensitive adhesives of the terpolymer type according to the invention are special for manufacturing processes suitable, so that various types of fixations can be made within the scope of this invention.

f) Styrene-acrylonitrile-alkyl acrylate terpolymers as heat-sensitive Adhesive compounds are effective in fixing even when no plasticizer is added and it is needed there is no fear of deterioration during storage and use which could result from the decomposition of the plasticizer.

g) styrene-acrylonitrile-alkyl acrylate terpolymer as heat-sensitive Adhesives do not change with storage because they are thermoplastic resins.

Therefore fixings with these terpolymers as adhesive mass have excellent stability during storage.

h) Styrene-acrylonitrile-alkyl acrylate gate polymer as heat-sensitive Adhesive is very heat-resistant, so that fixing inserts with these terpolymers do not discolour or cause decomposition when ironing onto outer fabrics.

i) Fixation inserts of this type make it possible to streamline the manufacturing process of garments by ironing previously cut outer fabrics with the lining instead of stapling them together.
Ie they contribute significantly to the rationalization of the manual

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work to be done without reducing the quality of the finished garments .

j) Fixation inserts of this type are useful as fixations for the manufacture of shoes and in other fields as well as for the manufacture of articles of clothing.

k) Fixing inserts of this type show excellent binding power and have excellent durability, even if they are ironed on at a low temperature , if steam is used when ironing outer fabrics. Therefore, they are particularly useful in the processing of top fabrics, die.sich discolor with heat or received.

1) Styrene-acrylonitrile-alkyl acrylate polymer as a heat-sensitive adhesive can be produced at a low cost without requiring a special reaction vessel such as a high pressure vessel.

m) The regulations for the composition, the relative viscosity and melting temperature of styrene-acrylonitrile-alkyl acrylate terpolymer as Mt »ι ^ τγϊ» μτη ^ Ιι » adhesive mass can be changed not only by varying the polymerization conditions, but also by mixing more than two kinds of the above polymers can be changed .

In addition, mixtures of these polymers are extremely uniform in quality, since they have the same properties as the individual polymers.

The invention thus relates to fixation inserts which differ considerably in their quality and their possible applications from the already known fixation inserts .

The following examples show possible applications of the invention:

example 1

15 parts by weight of styrene, 38 parts by weight of acrylonitrile, 47 parts by weight of ethyl acrylate, 2 parts by weight of potassium persulate, 2 parts by weight of sodium bisulfite, 9 parts by weight

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231393b

parts of lauryl mercaptan, 8 parts by weight of sodium lauryl sulfate and 500 parts by weight of distilled water are charged into a reaction vessel equipped with stirrer, reflux condenser and thermometer charged, heated to 65 ⁰ C under nitrogen, the polymerization reaction gets underway. The temperature is then increased to 70-75 ° C. and the reaction is carried out in 90 minutes.

After the completion of the reaction, the reaction product was poured into methanol, whereby the styrene-acrylonitrile-alkyl acrylate Terpolymer precipitated.

The precipitate was washed repeatedly in water and methanol and cleaned. The terpolymer was then dried at a temperature of 50.degree.

The above method gives a terpolymer which is composed of 12.5 percent by weight styrene, 34.8 percent by weight acrylonitrile and 52.7 percent by weight Ethyl acrylate with a relative viscosity of 0.460 (in dimethylformamide at 30 ° C), which softens at 73 ° C and melts at 12 2 C.

(Yield 95 % )

A powder was obtained by finely dividing this terpolymer through a sieve (e.g. Taylor mesh). Then were

ρ
25g / m sprinkled on a fleece made of nylon fibers and fixed on it. So you got a fixation insert. This insert was ironed with an outer fabric (mixed fabric of 55Ϊ wool and 45% polyester) under the following fixing conditions: temperature 120 ° C., 5 seconds. Steam, 5 sec. Iron.

The resulting material showed excellent properties as described in Table I.

In addition, the temperature of the hot iron (as in Table II) can be varied over a wide temperature range, and obtained in the temperature range of 100-180 ° C one has excellent fixing power.

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The respective content of styrene, acrylonitrile and ethyl acrylate of this terpolymer can be determined with the combustion method can be determined with the aid of an elemental analyzer. The relative viscosity in dimethylformamide at 30 ° C was determined with an Ubbelohde viscometer with 5 solutions with different concentrations by adding 0.1-3 g of the terpolymer were dissolved in 100 ml of the solvent.

The softening and melting points were measured at constant pressure using an extruder (Extruding Plow Tester) determined under the following conditions: nozzle diameter, Nozzle length, stamp size 1 cm, pressure 10 kg / cm, temperature rise rate 6 ° C / min. In this way, the relationship between the temperature, the stamping speed ·: and the softening point indicated by the temperature at which the stamp stopped, that at the beginning at a certain point stood to fall according to the rise in temperature, and the melting point was indicated by the temperature; in which the plunger moved faster due to the excess of molten resin in the direction of the nozzle. The pixie insert and the outer fabric were connected to one another with the help of a press (test machine) under the following conditions:

2
Pressure: 0.3kg / cm

Temperature: 100 ° C, 120 ⁰ C, 140 ⁰ C, l60 ° C, l80 ° c Steaming: 5 sec.

Ironing: 5 sec.

The preceding methods for determining / '· :? the salary, the relative viscosity, softening point, melting point and fixing conditions were also used in Example 2 and the used in other examples.

Example 2

2a parts by weight of styrene, 28 parts by weight of acrylonitrile,

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52 parts by weight of ethyl acrylate, 1 part by weight of potassium sulfate, 2 parts by weight of monoethanolamine, 2 parts by weight of lauryl mercaptan, 2.5 parts by weight of sodium lauryl sulfate and 500 parts by weight of distilled water are poured into the same reaction vessel, heated to 65 ° C under nitrogen, the polymerization reaction getting started Minutes, the temperature is increased to 75 ° C. and the reaction is carried out in 90 minutes. After the reaction has ended, the reaction product was separated by precipitation and purified and dried as in Example 1. Thus there was obtained a terpolymer composed of 23.6 weight percent styrene, 27.3 weight percent acrylonitrile and 49.1 weight percent ethyl acrylate with a relative viscosity of 0.435 (in dimethylformamide at 30 ⁰ C), which softens at 93 ° C and at 120 ⁰ C melts.

(Yield By finely dividing this terpolymer through a sieve (Taylor mesh) as in Example Ί, a powder was obtained.

Then 25 g / m 2 of this powder was sprinkled on a nonwoven made of nylon fibers and fixed thereon. This gave a Fixing insert.

This insert was ironed with an outer fabric (mixed fabric of 55 % wool and 45Ϊ polyester) under the following fixing conditions: temperature 120 ° C, 5 sec. Steam, 5sec. Iron.

The resulting material showed excellent properties as described in Table I.

It was also proven that the ironing temperature can be varied over a wide range (see Table II)

Example 3

5 parts by weight of styrene, 47.5 parts by weight of acrylonitrile, 47 »5 parts by weight of ethyl acrylate, 2.5 parts by weight of potassium

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persulfate, 3 parts by weight of sodium bisulfite, 2 parts by weight of lauryl mercaptan, 3 parts by weight of sodium laurysulfate and 500 parts by weight of distilled water are poured into the same reaction vessel, to 65 ° C under nitrogen heated, whereby the polymerization reaction starts. After 5 minutes the temperature is increased to 75 ° C and the reaction carried out in 90 minutes. After the completion of the reaction, the reaction product became by precipitation separately and washed as in Example 1 and dried. Thus, a terpolymer composed of was obtained 7.7 percent by weight styrene, 43.7 percent by weight acrylonitrile and 48.6 percent by weight acetyl acrylate with a relative Viscosity of 0.401 (in dimethylformamide at 30 ° C) which softens at 72 ° C and melts at 108 ° C.

(Yield Jl H)

By distributing this terpolymer through a sieve (Taylor Mesh) as in Example 1, a powder was obtained. Then this powder was applied to a non-woven fabric made of nylon fibers sprinkled on and fixed on it by heating. So you got a fixation insert.

This insert was coated with a top fabric ironed (blended fabric of 55% wool and polyester 45X) for the following fixing conditions: Temperature 120 ⁰ C, 5 sec steam, 5 sec ironing.

The resulting material showed excellent properties as described in Table I.

It was also proven that the ironing temperature can be varied over a wide range (see Table II)

Example 4

20 parts by weight of styrene, 28 parts by weight of acrylonitrile, 52 parts by weight of butyl acrylate, 2 parts by weight of sodium bisulfite 2 parts by weight of potassium persulfate, 6 parts by weight of lauryl mercap

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Tan, 3 parts by weight of sodium lauryl sulfate and 500 parts by weight of distilled water are poured into the same reaction vessel, to 65 ° C. under nitrogen Polymerization reaction starts.

filled vessel, heated to 65 ° C under nitrogen, the

After 5 minutes, the temperature is increased to 75 ° C. and the reaction is carried out in 90 minutes. After completion of the reaction, the reaction product was separated by precipitation and washed and dried as in Example 1. A terpolymer was thus obtained which is composed of 26.2 percent by weight styrene, 26.7 percent by weight acrylonitrile and ¹ I 7.1 percent by weight butyl acrylate with a relative viscosity of 0.61 ¹ J (in dimethylformamide at 30 ^° C.), which at 8l ° C softens and melts at 135 ⁰ C.

(Yield 91%)

By finely dividing this terpolymer through a sieve (Taylor mesh) as in Example 1, a powder was obtained. Then 25 g / m 2 of this powder was sprinkled onto a nonwoven made of nylon fibers and fixed by heating. So you got a fixation insert. This insert was coated with a top fabric ironed (blended fabric of 55% wool and 45 Polyester?) Under the following Pixierbedingungen: Temperature 120 ⁰ C, 5 sec. Steaming, 5 sec. Iron. The resulting material showed excellent properties as described in Table I. It has also been proven that the ironing temperature can be varied over a wide range (see Table II)

example 5

9 parts by weight of styrene, 28 parts by weight of acrylonitrile, 63 parts by weight of methyl acrylate, 2 parts by weight of potassium persulfate, 2 parts by weight of sodium bisulfite, 7 parts by weight of lauryl mercaptan, 2 parts by weight of sodium lauryl sulfate and 500 parts by weight of distilled water are placed in the same reaction vessel as in Example 1, ^{heated to 65 °} C. under nitrogen. the polymerization reaction in

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Gear is coming. After 5 minutes the temperature rises to 75 ° C increased and the reaction carried out in 90 minutes. After completion of the reaction, the reaction product was through Separate precipitation and washed and dried as in Example 1. Thus, there was obtained a terpolymer which is composed of 7.9 percent by weight styrene, 25.1 percent by weight Acrylonitrile and 67.0 percent by weight methyl acrylate with a relative viscosity of 0.346 (in dimethylformamide at 30 ° C), which softens at 62 ° e and melts at 89 ° C.

(Yield $ 89)

A powder was obtained using the same method as in Example 1 (fine division through a sieve, Taylor mesh). This powder was then applied to a nonwoven made of nylon fibers sprinkled on and fixed by heating. So you got a fixation insert.

This insert was ironed with an outer fabric (mixed fabric of 55 * wool and * \ 5% polyester) under the following fixing conditions: temperature 120 ° C., 5 sec. Steaming, 5 sec. Iron.

The resulting material showed excellent properties as described in Table I. '

It was also proven that the ironing temperature can be varied over a wide range (see Table II)

Example 6

The emulsions obtained by polymerization in Example 2 and 3 were mixed in a weight ratio of 1: 1, and the polymers were precipitated from the Mixture separated, washed and dried as in Example 1.

The Terpolymemischung thus obtained contains an average of l6,2 weight percent styrene, 35.3 weight percent acrylonitrile and 48.5 weight percent ethyl acrylate with a relative viscosity of 0.410 (in dimethylformamide at 30 ⁰ C) with

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Softened at 77 ^° C. and melted ^{at 110 ° C.}

A powder was obtained using the same method as in Example 1 (particle distribution through a sieve, Taylor mesh). This powder was then sprinkled on a nonwoven made of nylon fibers and fixed by heating. So you got one Fixing insert.

This insert was coated with a top fabric ironed (blended fabric of 55% wool and k5% polyester) the following fixing conditions: Temperature 120 ⁰ C, 5 sec. Steaming, 5 sec. Iron.

The resulting material showed excellent properties as described in Table I. It was also proven that the temperature when ironing on can be varied over a wide range (see table II)

Also, for the ironing of the fusible obtained from Example 1-6., With the "dry ironing method" (150 ⁰ C, 5sec pressing), the fixed products showed almost the same values as those obtained with the "wet ironing method" (temperature 120 ⁰ C, 5 sec. steaming, 5 sec. ironing) (see table I)

Example 7

Styrene-acrylonitrile-ethyl acrylate terpolymer from Example 1 was liquefied by heat and the melted ^1st terpolymer was spun on the surface of silicone-coated, impregnated paper with the aid of an air nozzle at 20 ° C.

A fixing insert was made from impregnated paper with a fiber layer.

When ironing this fixing fleece between 2 layers of outer fabric, received one excellent fused product that corresponds to example 1.

Example 8

Styrene-acrylonitrile-ethyl acrylate terpolymer as in Example 1 was dissolved in dimethylformamide in order to obtain a 3 percent solution.
This solution was made 1mm thick with a squeegee on one with

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Fluoride resin coated, impregnated board applied, and then this plate was immersed in water (50 ° C) to coagulate the solution.

This gave a terpolymer film of 0.05 mm Strength.

This film was applied to a nonwoven nylon fiber web placed and heated to 130 ° C to a fixing insert with a styrene-acrylonitrile-ethyl acrylate terpolymer film to manufacture.

When this insert was ironed onto the outer fabric (mixed fabric of 55% wool and M5 % polyester), a product was obtained with the same excellent properties as in Example 1 »

In the following, further examples are described in which terpolymers according to the invention of styrene, acrylonitrile and ethyl acrylate were used as thermoplastic adhesive mass, to give a possibility of comparison. Their properties are also described in Table 1.

Example 9

5 parts by weight of styrene, 7.5 parts by weight of acrylonitrile, 17.5 parts by weight of ethyl acrylate, 2 parts by weight of potassium persulfate, 2 parts by weight of sodium bisulfite, 0.5 part by weight of lauryl mereaptane, 2 parts by weight of sodium lauryl sulfate and 500 parts by weight of distilled water were placed in the same reaction vessel as in Example 1 , heated to 65 ⁰ C under nitrogen, whereby the polymerization reaction starts. After 5 minutes, the temperature is increased to 75 ° C. and the reaction is carried out in 90 minutes.

After completion of the reaction, the reaction product was separated by precipitation and washed and dried as in Example 1. Thus, to obtain a terpolymer, which is composed of 2.1 weight percent styrene, 51, ^ weight percent acrylonitrile and 46.5 weight percent ethyl acrylate, having a relative viscosity of 0.712 (in dimethylformamide at 30 ° C), which softens at 90 ⁰ C and melts at 158 ^{0 Cf.} Using the same method as in Example 1 (fine division

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through a sieve (Taylor Mesh) a powder was obtained.

2
This powder (25 g / m 2) was then sprinkled onto a fleece made of nylon fibers and fixed by heating. So you got a fixation insert.

This insert was ironed with an outer fabric (mixed fabric of 55Ji wool and 45 % polyester).

The fixed product was inferior to those of Example 1-5 in fixing power and durability and showed no advantages compared to conventional, fixed products.

Example 10

Using the same method as in Example 9 to obtain a terpolymer of 10.3 weight percent styrene, 8.2 percent by weight of acrylonitrile and 8l, 5 percent by weight ethyl acrylate having a relative viscosity of 0.375 (in dimethylformamide at 30 ⁰ C) at 59 ° C softens and melts ^{at 90 ° C.} A powder was obtained using the same method as in Example 1 (fine division through a sieve, Taylor mesh).

2
A fixing insert was produced by sprinkling 25 g / m 2 of this powder onto a nonwoven fabric made of nylon fibers and fixing it by heating.

This insert was ironed with an outer fabric (mixed fabric of 55 # wool and 45 % polyester). The resulting product was equivalent to those from Examples 1-5 in terms of fixing force, but it was not suitable for practical use because of its inadequate resistances compared to Examples 1-6 (see Table I)
Example 11

Using the same method as in Example 9, a terpolymer of 31.3 weight percent styrene, 35.2 weight percent acrylonitrile and 33.4 weight percent ethyl acrylate was obtained having a relative viscosity of 0.39 ^ (in dimethylformamide at 30 ⁰ C); which softens at 84 ° C and melts at 148 ° C. A powder was obtained using the same method as in Example 1 '(fine division through a sieve, Taylor mesh).

2
Thereafter, 25g / m of this powder were applied to a nonwoven made of nylon

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fibers scattered and fixed by heating. So you got a fixation insert.

This insert was ironed with an outer fabric (niche fabric made of 55% wool and 45% polyester).

The fixed product was not suitable for practical use because its fixing power and durability are similar to those in did not correspond to Examples 1-6. (see table I)

Example 12

Using the same method as in Example 9, a terpolymer was obtained which was composed of 2.4 parts by weight of styrene, 10.2 parts by weight of acrylonitrile and 80.5 parts by weight of butyl acrylate with a relative viscosity of 0.284 (in dimethylformamide at 30 ° C.), softens at 48 ° C and melts at 58 ⁰ C.

The resulting terpolymer was brought into film form as described in Example 8 and applied to the surface of woven nylon fabric to create a fixation insert.

When ironing this insert with outer fabric (mixed fabric from 55% wool and 45% polyester) was the set product for not suitable for practical use, since its fixing force and resistances did not correspond to those of Example 8.

The following Table I shows the comparative values of fixing force and durability of the examples of this invention and conventional insoles for fixing purposes.

Table II shows the comparative values between heat ironing temperature and fixation force of conventional inserts and the examples of this invention.

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Tabel

Original fixation force unit: kg / 5cm wide

Pixierkraft after durability test Unit: kg / 5cm wide

1 4.6 Dry cleaning To wash 4.1
3.9 example 2 3.8 4.4 40 ° C
60 ° C ³ > l
2.8 example 3 4.0 3.5 4ore
60 ° C 3.6
3.2 example 1" 3.7 3.8 HO ¹ IC
60 ° C 3.5
3.1 example 5 3.2 3.0 40®C
60 ° C 3.1
2.2 example 6th 4.3 2.9 4Ö ° C
60 ° C 3, ö
3.4 example 9 1.8 4.0 40 "C
60 ° C 0.8 example 10 3.2 1.5 4o ° c
60 ° C 1.0
0 example 11 1.2 0.8 4ö ° c
60 ° C o \ ro
OO example o.n 6O ⁰ C

Conventional 1 »3 1.0 Uo ₀ ¹ C 0.5 Fixing pads 60 ⁰ C 0 a. Polyvinyl acetate O , 4 O uo ° c 0.5 powder 60 ° C 0.3 b. Polyethylene 1 »5 1.3 40 ° C 1.2 powder 60 ° C 0.8 c. Polyamide powder (with plasticizer)

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The following is also explained to explain the table:

The test values for fixing force in Table I were as follows Method determined: Outer fabric and insert of the same size (5 cm wide and 10 cm long) were placed on top of one another and with a test ironing machine under the following conditions:

P et

Pressure 0.3 kg / cm, ironing temperature 150 C, steaming 5 sec., Ironing 5 sec. fixed. Between the outer fabric and the insert Impregnated paper was placed, only the part to be fixed, 5 cm wide and 4 cm long, was left out. This impregnated paper was then removed, all unfixed edges on a clamping device (Tensilon, company Toyo Sokki Co.) and the fixed part was tested for tear strength at an angle of 180 °.

The values in the table are the average values from the 10 values determined per test piece.

The resistance to cleaning in Table I was determined using the following method.

Fixed specimens as obtained above were cleaned in perchlorethylene in a dry cleaning machine at 60 ° C. for 5 x 35 minutes.

Thereafter, after removing the perchloethylene, the fixing force was determined using the same method as above.

Heavy wash resistance (in Table I) was tested using the following method:

Fixed pieces obtained as above were washed vigorously for 90 minutes in an aqueous one Solution at 60 ° C with 0.5 percent by weight of neutral, synthetic detergent in an automatic washing machine. After rinsing and drying, the fixing force was determined as above.

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Table II Pixierkraft
100 ⁰ C 120 4.0 _rt at any ironing temperature
° C 140 ⁰ C 16O ⁰ C 180 ⁰ C. 4.2 4.0 3.7 3.6 4.4 3.8 3.4 Unit: kg / 5cm br. 3.2 3.1 3.8 3.9 3.6 example 1 2.8 2.2 4.0 3.6 3.7 Example 2 1.8 3.8 3.1 3.0 2.5 Example 3 3.7 3.4 3.2 4.4 4.4 Example 4 3.0 1.3
0.6
1.5 3.9 2.2
0.7
2.2 1.7
0.5
2.7 Example 5 0.8
0.3
1.2 1.8
0.8
2.2 Example 6 Conventional
Fixing pads
a. Polyvinyl acetate
powder
b. Polyethylene
powder
c. Polyamide powder

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The values for the fixing force at each temperature were

determined using the following method:

Outer fabric and inserts were at the temperatures

100 ⁰ C, 120 ° C, mo ° C, J6O ° C and l80 ° C with the same

Method and the same machine as ironed above. Thereafter, the test pieces were subjected to a peeling test at 180 °

(Angle Peeling Test)

The values in the table are the average values of

10 specific values per test piece.

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Claims (1)

Claim Fixing insert rait a thermoplastic, terpolymer synthetic resin as adhesive compound, characterized in that the adhesive compound consists of 3-30 weight percent styrene, 20-50 weight percent acrylonitrile and 20-77 weight percent alkyl acrylate, whereby the alkyl acrylate can contain alkyl radicals with 1 - ¹ l carbon atoms and that Terpolymer has a relative viscosity of about 0.3-0.7, determined in dimethylformamide at 30 ° C, and a melting range of about 60-150 ° C. 309842/0379