DE2063387A1 - Process for reinforcing textile clothing with thermosetting films - Google Patents

Description

Dr. Hans-Heinrich Willrath Dr. Dieter Weber

PATENT LAWYERS Telegram address: WIIXPATENT Postsdiedc: Frankfurt / Main 67 6S Bank: Dresdner Bank AG., Wiesbaden

Account No. 276 807

D - 62 WIESBADEN? 1.0ez, J970 P.O. Box 1327

Gustar-Ereytag-Strasse 25 Telephone (06121) Ϊ7 27 20

Docke t 68-540

Bohm and Haas Company, Independence Mall West, Philadelphia, Pennsylvania (USA)

Process for reinforcing Seitil clothing with thermosetting Film

Addendum to patent. ... ...

(Patent application P 19 59 010.4-26)

Priority: from March 3, 1970 in USi., Ser. No. 16 242

Subject of the parent application iit a fabric with a preformed, reinforced thermosetting film in egg nem rope its surface, the stronger strains al "other · districts or parts exposed to the Gewehes. This increases the wear properties or the abrasion resistance as well as the tear resistance of the textile fabric

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improved. The subject of the main application is also a Textile garment which is characterized by a pre-formed, reinforcing, thermosetting film on a part of its surface that is subject to greater stress than other areas or files of the garment * Processes and resins for achieving permanent crease resistance, for example according to US Pat. No. 2,974 432 and 3 268 195 (coratron fabric) are effective and provide durable, ironed, wrinkle-resistant clothing that can withstand many washes, but the resins themselves and those for Their full curing required heat treatments often damaging the fiber structure by causing the Fibers blacken and thereby reduce the abrasion resistance of the finished clothing. This is especially true for the Areas of clothing that are subjected to repeated tensile stress, such as the knees and elbows.

The invention relates to an improved, layered one Reinforcement comprising a thermoplastic film which, with one of its surfaces, is attached to a non-woven material made of textile-like fibers or paper-like fibers, like a paper stock. The film can be permanently thermoplastic or temporarily thermoplastic in character; H. be of such a nature that it becomes sticky and adhesive when heated, but when continued Heating is subject to a thermosetting effect.

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Examples of permanent thermoplastic materials which can be used according to the invention are e.g. B. Polymers including homopolymers and copolymers of acrylic or methacrylic acid esters », such as the esters of the same obtained by reacting acrylic acid with an alcohol having 1 to 12 carbon atoms, such as methyl acrylate, ethyl aorylate, butyl acrylate, 2-ethylhexyl acrylate and dodeoyla aylate. Other examples are the esters of methacrylic acids with alcohols having 5 to 12 carbon atoms, such as amyl methacrylate, hexyl methacrylate, 2-ethylhexyl methacrylate and dodecyl methacrylate. Mixed polymers of the acrylates or these methacrylates or of both can be used together, for. As a copolymer of $ 60> ethyl acrylate and butyl acrylate or # 40 is a copolymer of 30 $> Methylmethaerylat and 70 i "Butylaorylat. In addition, copolymers can be any of the acrylates or methacrylates just mentioned with other lower methacrylates

Methylneben ^ methacrylate can be used, such as. B. Copolymers of ethyl methaorylate or butyl methacrylate with ethyl acrylate or butyl acrylate. The acrylate or methacrylate polymers can also be made from a small amount of monomeric material that leads to adhesiveness, such as acid monomers including acrylic acid, methacrylic acid and itaconic acid, hydroxyalkyl acrylates or methacrylates such as Hydroxymethyl methacrylate} also acrylamide or methacrylic

at the
amide and its derivatives, such as / nitrogen with -hydroxyalkyl

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substituted acrylamide or methacrylamide? Ureid groups containing monomers, such as ureidoethyl methacrylate, and monomers containing amino groups, such as 2-aminoethyl vinyl ether or vinyl sulfide. The amount of such the adhesiveness promotional material can be 0.2 to 5 # and in some Cases even 10 # or more, based on the total monomer content of the polymer.

In addition to the functional monomers just mentioned for providing the adhesion to the acrylate films the polymers of acrylic or methacrylic acid esters styrene, vinyltoluene, butadiene, vinyl acetate, vinyl chloride, Vinylidene chloride and other non-functional monomers contain. The amount of this type of non-functional monomer that can be present in the interpolymer can be be quite large and for example 10 to 70 weight ^ of the mixed polymer.

The thermoplastic film can also be made of polyethylene, Polypropylene, polyisobutylene or copolymers τοη styrene and ethylene, polypropylene or isobutylene exist. Other thermoplastic materials that can be used are e.g. B. cellulose esters, such as Oellulose acetate propionate, Cellulose acetate butyrate, polyester resins such as polyethylene glycol terephthalate, Polyamides such as nylon 66 and oil modified ^ alkyd resins.

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The functional groups mentioned for the granting of adhesiveness can also have a thermosetting property, if this is desired. For example, it is a copolymer containing R-methylolacrylamide, H-Methylolmethaerylamid or H-methylol-4-pentenoguanamin in an amount of about 0.2 to 5 i "use, since it is initially thermoplastic and capable of tacky and adhered to to become an item of clothing against the surface of which it is placed under heating, but exposed to the Fred and heating effect for a sufficiently long time that it hardens in the heat, so that it is later softened in the heat, as can occur during washing and drying , is no longer removed. Other thermosetting materials are e.g. Included as mixed polymers GIyοidylacrylat or Glyoidylmethaorylat in amounts up to about 2 to 7 $> or more * Also one thermosetting films can be obtained by Säuremonoaere such as o acrylic acid. Like. And Hydrοxyalky einsehlieflt monomeric! Because after heating a Crosslinking occurs through reaction of the hydroxyl and carboxyl groups. It is within the scope of the invention to use any permanent thermoplastic material, ie one that can be re-heated indefinitely and becomes sticky and adhesive after each re-heating, as well as any material of a thermoplastic nature that is thermosetting after a correspondingly long or high heating. Faohmann knows many such materials, and the use of permanently thermoplastic or thermosetting materials

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materials in a thermoplastic state for production of the film bed end part © s of the laminate lies in the frame the invention.

The fiber layer of the reinforcement element can be made of non-woven material composed of fibers formed either from textile length or from short length® is how they used to be used in making paper is used, or even a mixture of fibers of very different lengths can be considered. In general, it is essential that the nonwoven material, that one uses is of such a nature that "it is for the wearer whose skin is in contact with the nonwoven material can come, offers a soft reef. It is for this reason that the fiber layer is the preferred embodiment of a nonwoven material wherein the fibers are essentially unbound or by melting the fibers even if some of them may have adhesive strength, or by using an adhesive material are at most weakly connected. When using a practically unsoled and unbound or at most The wearer has a weakly bound fiber material garment reinforced by an element Bach of the invention a fairly pleasant feeling at the points of contact between the skin and the reinforcement plaster. The lature dee fibrous material! can be chosen in such a way that it the wearer is unable to undertake any unpleasant

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differ in feel in the reinforcement area of the garment from its other areas.

The allowable amount of weave that can be endured in a given nonwoven material, depends on the particular fiber material, its fiber length and diameter, the arrangement of the fibers in the nonwoven structure and the particular arrangement or distribution of the adhesive or binder * In general, should however, the amount of binder in the nonwoven sheet does not exceed 5% by weight of the fiber weight, and preferably be below 2% by weight.

If a non-woven piece of textile is used, it may contain fibers from about 1/2-inch to several inches in length, for example any conventional textile fiber can be used depending on the particular feel or feel desired. Cotton, heyon, wool, silk and linen are typical textile fibers, that can be used. If desired, however, one can also use fibers such as nylon, polyethylene glycol terephthalate, casein, fibers made from vinyl resins such as those made from Copolymers of vinyl chloride and vinyl acetate, or of acrylonitrile with methyl acrylate, vinyl acetate and / or vinyl pyridine, or even of an acrylic ester mixed polymer such as copolymers of ethyl acrylate, methyl methaorylate and vinyl pyrrolidinone can be used. The usage

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of parsers are textile length "in the production nieht woven fabrics allows the nioht woven material on such a device, such as a carding machine to produce a. Hando loom or a Garnett ~ machine. If desired, several bands obtained from such devices can be superimposed in, in order to achieve the desired dioke in the nonwoven layer of the reinforcing member β In general, the thickness used may be 0.025 to 0.375 mm (1 to 15 mils) or more

The use of greater thicknesses up to about 1.25 mm (about 50 mile) is allowed, but in general this should be Thickness of the fiber layer of the reinforcement material is again preferred should not be more than 0.375 mm (15 mils) as a large proportion of the fibers in such a thick layer of fibers are expected to be removed from the composition during normal querying and use after the Plaster in its position to reinforce the! Dext ils toffee, that is processed into the garment has been specified. The reason for this is simply that it is inconvenient is to have a significant amount of binder in the fiber layer and therefore the unbound Fibers gradually increase during subsequent use of the fabric, e.g. B. when carrying and washing, can be removed. However, many fibers remain on the film of the VeratärJEungaetüokee stipulated bo that they are nioht removed, but maintaining a pleasant textile feel during ensure a long wearing time of the fabric.

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The fiber layer is preferably unbound, it can but, as already mentioned, be weakly bound. If it is bonded, the bond should preferably be through Application of the binder to separate small areas, e.g. B, in small narrow dots or Stains. If such a weakly bonded nonwoven layer is coated on the film in the manufacture of the V-reinforcement material of the invention, the adhesion of the nonwoven strip can be impaired or substance on the film comprise contact of these bonded spots or spots with the film surface. if if you bind the non-woven fabric to the film in this way, the fibers between the points can easily move freely under similarly weak forces. Saraus surrenders, dai the non-woven side of the reinforcement piece does not develop a wrinkled displacement or a wrinkled appearance, even if the piece is used to reinforce a fabric * of fairly light weight. If you have a When using non-woven material in which a large rope of fiber lengths adheres to the surface of the film, there is sometimes a tendency to develop a wrinkled displacement or a wrinkled appearance of the fiber layer when the reinforcement piece is used on a thin fabric and then washed. Bs • There is no problem when such a reinforcing fabric is applied to a fairly heavy fabric

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but one can control the reinforcement even of spawning tissues by having one. The type and false of the adhesion of the fibers in the nonwoven layer to the film are predetermined, so bQvorsugt® results are obtained by using a fibrous layer in which the fibers are arranged in such a way that they are only along a small part of them Length to the film the reinforcement elements are glued on »A olehe Ara adhesion can be the result of the arrangement of the fibers in the non-woven layer at the moment ® @ in _s where aie is layered with d @ m, or si © can see, through H @ g @ lung the area

Adhesion of the
Without the / ^ aaer in the film evg & b @ n » An example of a controlled gluing consists in the soho» mentioned VorJaaadensein τ © η ABhaftmga- or Elebepusktexi in the Faeeraehicht at the time of the Jeeoh.ielit.ung »so that the Elebitoff in the points di @ BsrüJaruag with the 3? ilm © berflach® produces vm, & the Faeera. the film., relatively small points or areas bin <a®t _? di® only extend over a short Abitand along® d @ r lengths of the iaaern "The use of blotting paper obviously falls into a combination of the categories of" 1 ") arrangement of threads and 2.) sticky prints. In one of these. Paper generally adhere to the fiber "s" lb "t sm ä @ m film on _f and ea there is no adhesion

This is an aid to control! · - dt · 'between the film and the. Im «sb ^: 4 * t

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Can be used consists of crimped fibers or a crepe-like distribution of the fibers, namely the former in a textile fabric and the latter in a paper. By distorting the fibers in this way, they can the film in places of small dimensions rather than in fairly extensive areas along the length of the fibers to be allowed to adhere.

Bas basis weight of the nonwoven strip can in terms of the usual unit of paper, namely the weight of a letter of 480 sheets, wherein the sheets have dimensions of 508 χ 762 mm (20 30 inches). In general, woven materials can be of a basis weight from 1.36 to 11.34 kg (3 to 25 pounds) and in preferred embodiments from 1.81 to 6.80 kg (4 to 15 pounds) Pounds). Ea can, however, also be heavier ones nonwoven sheets even up to a basis weight of 54 kg (120 pounds) can be used, especially if a unsolated, unbonded paper with high absorption properties, such as fleece paper, is used and if some stiffening of the reinforced fabric can be allowed. The fact that a nonwoven arch has a low base weight is not the sole factor determining whether it can be used as a component of a reinforcing material for fabrics of both low and high weight, without any problems with wrinkling

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revealed when wearing or washing · If not woven materials of low G-round weight are used, when coating the non-woven material ensure with the film of the reinforcement element that the ratio of the bonding area of the fibers to the film to the length of the fibers is kept small. One can do this check if the film is under normal conditions is not excessively sticky to a surface by touching the laser material with a heated, engraved roller, whose very small raised parts in the form of dots are at a substantial distance from each other, against the film when pressing the nonwoven fiber layer of the film until the tendency to form folds or wrinkles is largely or completely eliminated, even if the stiffening in connection with spawning G-ewtben On the other hand, limited areas of fiber adhesion to the film can also be achieved by you can see crimped® fibers in the non-woven strips or a crepe structure in them. In these cases it will be excessive area © of the Faeeradhäeion on the film path end Avoid distortions that are present in the individual fibers or in strips from them.

In all such cases the limited adhesive contact area between the fibers of the nonwoven is achieved Material, so that a reinforcement adhesive is made can be made even for lightweight fabrics without

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Appearance of wrinkles or wrinkles as difficulty can be used. Apparently, this is "the ease of deforming the fiber structure of the nonwoven material during wear and usual handling of the stiffened tissue, e.g. B. washing, dry cleaning, drying, etc. attributable. Thus, any Tendency to develop a wrinkled appearance in the fiber layer during wear as a result of moisture absorption caused by the body of the wearer of the garment and subsequent drying and wrinkling by repeatedly moistening and drying when washing or dry cleaning, largely avoid or completely switch off.

Made of wood pulp, e.g. B. in the usual paper production, obtained oilulose fibers are therefore quite satisfactory for the fabric layer which is used in the manufacture of the layer element according to the invention. However, lasers of suitable short length made of cotton, regenerated cellulose or wood, linen, silk or synthetic resins, e.g. Example, nylon, cellulose acetate, casein, vinyl or acrylic acid resins, such as aoryl nitrile polymers, can be used alone or in a mixture with one another, in particular mixed with wood from alpha cellulose fibers. If Kunetfaeern are used, they should not have a large diameter. Roll with regenerated cellulose rayon

the fibers are 30 denier or less in size.

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Although the fiber material should be sized in the normal sense of the word, it can nonetheless in a certain way Kind to be adapted to cohesion when treated with aqueous agents. To this end, he can

1 to 3 weight sä- $ of the fibers in various materials -contained, which impart resistance, such as aminoplasts in particular, e.g. B ₉ condensates of melamine or urea or their mixtures with formaldehyde or polymers of ureido-

k äthylvinyläthern ,, as aie in the USA patent 1fr.

2,734,890.

Preferred papers are made from bleached or unbleached sulphite, Kraft-p alpha oilulose fibers, rag fibers or their mixtures «. of appropriate length, such as specified above.

As mentioned, all of the fibers in the nonwoven fabric or paper can be of the cellulosic type or other types that are non-adhesive - _f d _o h. which do not become sticky when heated, if desired, however, a proportion of the fibers up to about 10% by weight may be of a type which has a potential adhesive nature, ie they are capable of becoming tacky and adherent, like fibers, when heated made of thermoplastics or thermosetting hard materials, e.g. acrylic or vinyl polymers. The presence of such potentially adhesive fibers in the fabric favors the bonding of the fibers of the fabric to the thermoplastic or thermosetting film, and such

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Ventilation is increased during the bow! is carried out to the layer element at a district a garment to be stiffened to adhere to bring. However, the proportion of such potentially adhesive fibers should not be so large that the paper is so resistant against deformation is made that a noticeable wrinkling occurs in use.

Preferably, the nonwoven fabric or paper is completely unbond, except that Binding of fibers can occur when a hate resistance resin is used in the amounts mentioned above. Such wet strength resins can serve to provide a wet strength of about 18 g to 45 g / 2.5 cm (0.04 to 0.1 pounds per inch) at 454 g (1 pound) basis weight.

The layered reinforcing element may be in the form of Sheets or rolls are supplied that are on themselves or on a core either with or without a release liner are wound on the side of the film that is not provided with the fibrous layer. This side that one as the back of the layer element, so can be on a release paper or cloth, such as unbleached Canvas, supported by a silicone layer or a layer of polyethylene or polytetrafluoroethylene wearing. The polyethylene, polytetrafluoroethylene or silicone layers have good separation properties, so that the layer

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Fabric made of fiber and thermoplastic films from the release paper or the like can be stripped off without the laminate entering * The presence of the irene paper or cloth ensures that the fiber layer is not on the label side of the thermoplastic film when it is laid on top of one another or rolled up into a roll - Adheres, which could make it difficult to separate the sheets from each other or the unwinding of the roll without peeling off the fiber layer. The thermoplastic film has a relatively soft, flexible and durable structure, and it can have a film thickness of around 0.013 to 0.25 mm (1/2 to 10 adle), preferably from 0.038 to 0.075 mm (1.5 to 3 mils) beneath. The film is preferably colorless and clear and provides a vial-viable surface. The use of a thermosetting film ensures durability when soaking and even when dry cleaning.The presence of the fiber layer gives a soft, pleasing feel to the finished and v strengthened tissue. So when the reinforcement element is applied to the knee area of trouser legs, the wearer finds contact with the knee very similar to that with the woven fabric itself, because the fiber layer has a soft feel. Since the reinforcement element is very thin, the wearer can normally the edge of the reinforcement cannot be determined from feeling alone.

When applying the Yeratarkungaeahiohtatffea on the garment it is only necessary to use a rope de®

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Cut laminate to the desired size and to put in contact with the district of the garment, that is to be reinforced, preferably against the side of the garment that is not visible. The exposed side of the film, i.e. H. the surface that is not provided with the non-woven layer becomes placed on the surface of the garment, and the whole thing either ironed with an iron or between the pressure plates of a steam press or other mechanical press used in industry. The heat of the press or iron causes the surface of the film to soften and adhere to the parts of the fibers in the garment that the film touches. The intensity of the warmth and duration of the pressing should be accordingly controlled to prevent excessive lengths of fiber from adhering to the film. As previously mentioned, is made by using a pair of press rollers while one is heated and spaced apart Increases, e.g. B. of round or square point shape (1.6 mm or 1/16 inch diameter arranged diagonally), and presses fibers against the film, facilitating control of the areas of adhesion of fibers to the film; this is particularly advantageous if the fiber layer consists of non-woven textile fibers that are not crimped, or consists of an uncreped paper. Such a roll can also be used for non-woven fabrics in crimped Faatrn or for crepe papers, but in general you can

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a suitable coating with limited adhesive areas from fiber to film by means of such fiber sheets and also by means of blotting paper by interposing aie smooth rolls or between sheets covered with fabric

. pressed with a common laundry press "

The heat and / or the pressure of the press are controlled so that the bonding areas from fiber to film and also the degree of penetration of the film into the gaps of the yarns in the garment are limited »that the The area in question is not undesirable to v@rstei.ft, but rather Durable and remains supple »With a film made of thermosetting material, the duration and intensity of the heating regulated so that the film hardens and adheres to the garment without undue penetration. The at Pressing temperature applied can be from about 93 to 191 ° C (200 to 375 ° F) and press time can be between 3 and 35 seconds at pressures from 0.035 to 7.0 kg / cm

* (0.5 to 100 pounds / square inch), but preferably should not exceed 0.35 to 1.05 kg / cm ² (5 to 15 pounds / square inch). In general, a low pressure is adequate for bonding the element to the garment without excessive penetration of the film composition into the pores of the garment or excessively large fiber-to-film bonding areas.

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Example 1 t

An aqueous dispersion containing 46 # solids of an emulsion copolymers of about $ 85.9> ethylacrylate, 10 # acrylonitrile, acrylamide and 1.7 # 2.4 9 & methylolacrylamide is prepared by Emulsionsmischpolirmerisation. 100 parts of this dispersion are mixed with 7.1 parts of a 70% aqueous solution of tris (methoxymethyl) melamine, 1.2 parts of ammonium hydroxide, 0.5 part of a 25% aqueous solution of ammonium thiocyanate catalyst and 18.75 parts of a 4 #igen aqueous solution of methyl cellulose with a viscosity of 4000 cps.

The mixture is applied to a silicone-coated release paper cast using a coating knife and dried for about 15 minutes at a temperature of about 66 to 82 ° C (150 to 180 ° F) to form a preform "0.05mm (2 mils) thick" thermosetting reinforcement film to surrender. A crepe paper of the type used to make facial tissues, with a Q-round weight of 2.59 kg (5.7 pounds) is applied to the film by laying it together with the paper stock leads through the gap of a pair of press rollers, with the upper roller in contact with the paper stock at a temperature of 60 ° G (140 ° F). The rolls are run at a circumferential speed of about 1.5 m / sec (about 5 Fufi / sec) driven, and the pressure exerted on the laminate

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is 0.105 kg / cm ² (1.5 pounds / square inch) -; The laminate on the release paper is rolled and finished to a suitable size for the purpose of reinforcement purposes. "" -. -. -

Am a piece of the SoMohtstoffes from crepe paper and film

clay is peeled off the release paper and placed with the outside of the film on a section of cotton poplin fabric (114 g / 0.84 m of 4 ounces / square yard) ". which is intended for the shirt manufacturing "The district is calibrated at the elbow, the stronger stresses is exposed than other areas of the substance," The hot-curing film to the cotton fabric using-a pressure of 0.35 kg / em ² (5 Pound / square target) bound for 7 seconds at a temperature of 160 ° G (320 ° F). This © conditions give excellent binding of the Yer atärkungsfiliiea and the G-ewebefaeern. The reinforced fabric is then cured for 10 minutes at a temperature of around 150 ° G (300 ° P). The hardening occurs only on the film and does not additionally cause it to "flow. The table below" shows the increase in abrasion resistance as a result of the reinforcement.

Cycles bia aum failure using a WjgseabtOk Abrasive oil tester, P.opeline kesoheuert against S gel cloth ■ ^ _ ^ ___ ^ __

Cycles

Cotton poplin control © 2000 (hole formed)

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Table A (continued)

Cotton poplin, 10,000 (some wear

reinforced with a warm-hardening ^tongue visible,

but no hole) film crepe paper laminate

From the table it can be seen that the abrasion resistance of the cotton popeline has been increased by at least a factor of 5. The PiIm remains intact, and the tape sleeve retains her pas body enough to be a compliant Maintain grip over multiple washes and dry cleans while reinforcing the area of the garment shows no wrinkles.

Similar results are obtained without the ammonium thiocyanate catalyst.

example 2%

A permanent thermoplastic polyurethane film is combined with a face fabric of a base weight 4.08 kg (9 pounds) coated in the same manner as in Example 1. Then a piece of the laminate is attached to the Knee circumference of 6 oz / square yard (171 g / 0.84 m) fabric bound to make a pair of underpants is determined, whereby the laminate is placed with the exposed • film side on the surface of the fabric, dad it becomes the inner surface of the thigh of the pants. The bond is made under a pressure of 0.14 kg / cm (2 pounds /

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Square inches) for 5 seconds at a temperature of 138 ° 0 (280 ° F). '

As in Example 1, the abrasion resistance is noticeably increased and the reinforced area of the fabric has a pleasant feel of a textile character for the wearer. Furthermore, the fiber splint is free from any tendency to wrinkle. Br remains smooth as to. Handle vmü.

Bine aqueous dispersion of 60 ia a -solids Emulsionsmischpolysiera of about 85 9 9 i "Ithylacrylat, 10% acrylonitrile <1.7 $» acrylamide and 2.4 "^ Jfethylolaerylamid is prepared by Smulsionamischpolymerisation. 125 of this emulsion are ropes with 9 * 2 parts of a 70% aqueous solution of penta- (metiiöxymethyl) - melamine, 1 part ammonium hydroxide and 18 ^ 75 parts of a 4 ^ solution of methyl cellulose with a viscosity of 4000 cpf added »

This lisehöng is poured onto ice Kraft paper, coated with polyethylene and silicone. Dried about 15 hunts at 66 to 88 ° G (150 to 190 ° i ¹ ) and yields a preformed thermosetting backing film of about 0.05 mm (2 mils) thick on the release paper "" The combination of film and tissue paper is then applied to - a non-woven Seyoa fabric Q "125 mm (5 mils) thick -

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brought by passing the combination and the nonwoven rayon as a backing through nip rolls. The laminate The nonwoven fiber and thermoset film about 0.15 mm (6 mils) thick is then removed from the release paper stripped off and onto the area of the garment to be reinforced or the fabric applied by placing the film side of the laminate against the inside of the reinforcing district places. It leaves the non-woven surface in one place in contact with the legs or another district of the carrier.

This laminate is used to reinforce the inside knee of a boys' playhouse by being tied to it at 160 ° (320 ° F) for 7 seconds under 0.35 kg / om ² (5 pounds / square inch). The pants show increased abrasion resistance and also a pleasing, fabric-like feel against the knee of the wearer on very cold or hot, humid legs. The tensile strength of the pants is also improved in the reinforced areas with the laminate compared to reinforcement by the film alone.

Example 4:

The aqueous dispersion of Example 3 is on a Kraft release paper, coated with polyethylene and silicone, poured and about 15 minutes at about 66 to 88 ° C

ο
(150 to 190 F) dried to a preformed, warm

hardening or thermosetting reinforcing film of about

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To give 0.05 mm (2 mils) thickness on the release paper. The combination of film and release paper is then coated onto a 3 to 4 mil (0.75 to 0.1 mm) thick crepe paper supplied by the Peerless Paper Mill of Oaks, Pennsylvania. The paper (500 mm sheet of 610 χ 914 and 24 χ 36 inches) has a basis weight of 5.9 kg and a unit weight of about 18 g / 0.84 m (0.039 lb / square yard). Coating is accomplished by passing the combination of film and release paper and the crepe paper through pressure rollers operating at about 15 tons of pressure W at a temperature in the range of about 75 to 270 ° F (24-132 ° 0). The thermosetting film and paper laminate is then stripped from the release paper and applied to the area of the garment or fabric to be reinforced by placing the film side of the laminate against the inside surface of the area to be reinforced. The crepe paper surface remains in such a position that it touches the leg or another point of the wearer. Clothes,

^ which have been reinforced with this paper film mass,

show increased abrasion resistance and also better aesthetic properties. Patches showed after being washed 17 times in a Maytag washing machine for tide detergents at one temperature from about 60 to 71 ° C (UO to 160 ° F), no Runeel message. As indicated in Example 3, the tear strength is also improved by the paper film stain.

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Example 5 »

Similar results are obtained by repeating the Examples 1, 2 and 3 with the following non-woven strips »

a) an unbound viscose rayon strip. without Weave a base weight of 3.36 kg (7.4 pounds). The rayon fibers in the strip are curled Staple fibers approximately 1.2 Mioron in diameter and 31.7 mm (1.25 inch length) »

b) a thin, uncreped cloth paper weighing 3.67 kg (8.1 pounds) j

o) a blending paper of 4-5.4 kg (100 pounds) basis weight j

d) a lskose, reeyon strip bound by printing with the same fibers as in a) above, 0.8 mm (1/32 inch) diameter dots ie 3.2 mm (1/8 inch) apart.

In all cases except c) the reinforced tissue areas are not noticeably stiffened by the application of the reinforcement sealant and have improved wear resistance and load-bearing capacity. When the reinforcement is on the light sewing is applied and washed, seigres that there is practically no wrinkling when the materials are used with the above-mentioned strips o) and d)

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Cases a) and b), even if the reinforcement was open Tissue is needed.

Example 6 »

A permanent thermoplastic cellulose acetate butyrate film is heated to a somewhat sticky state on one of its surfaces by placing under © insr group of Infrared lamps is carried out. Immediately after this

H passage, the film is passed through a flocculation zone, in which an electrostatic! The field is erected and staple rayon fibers 1.6Tmm (1/16 inch) in length are flocked onto the film. Immediately thereafter the flocked film is ζ by a cooling one passed, so the adhesion of the ends of the staple fibers to the film in a stable state. The resulting laminate is ironed onto the elbow area of a lightweight approximately 4.5 ounces / square yard (128 g / 0.84 m) fabric ^to make a blouse. The laminate is against the blue

"Laugh mustard ironed that the Arur-is provided as the inside, -SO That is, the fibrous layer of the Schiehtitoffe® free" Daa ironing is performed by performing dei suaasim®ng @ - added substance between a pair PreSrollon, νύη which in contact with the. The fiber content of the Sühlohtstoffea to a temperature of about 93 ° 0 (fOO ⁰ F) trhitat iet · The pressure between the rolls is about 0.07 kg / om ² (1 pound / square inch) and the duration sswitehem den

109838/1670

about 0.2 seconds. The reinforced fabric obtained shows greatly improved abrasion resistance and drag resistance. It retains a pleasant, soft grip and does not show any wrinkling compared to normal drag conditions and Treatment during washing «, dry cleaning and drying.

109838/1676

Claims (6)

Claims 1. Laminate for reinforcing garments with a · »thermoplastic film or thermosetting film in a thermoplastic state, characterized by a Thickness from about 0.025 to 0.25 am (about 1 to 10 mils) and connected on one side of the film with an unbonded or weakly bound, non-woven fiber layer * wherein the ßesaatdioke of the laminate is about 0.075 to 0.50 mm (about 3 to 20 mils), 2. Laminate according to claim 1, characterized by gekenaseiohnet, that the attachment of fiber to the film along a relative short section of the attached fibers compared to the fiber length. 3. Laminate according to claim 1, characterized in that ^ dag the non-woven pushes made of a paper material an örundgewioht of about 1.4 to 11.4 kg (3 to 25 Deposit) and a fire resistance of about 18 to 45 g / 2.5 ″ width / 454 g weight (0.04 to 0.1 pounds / nominal Width / pound base weight). 4. Sextilkleiättngsetiiek with a »preformed, reinforcing thermo-plastic or thermosetting fila ia thermoplastic state on one of its surface, the - 29 - 109838/1876 more stress than other districts or ropes of the garment «is subject to. Patent (patent application P 19 59 010.4-26), characterized in that the film has a thickness of about 0.025 to 0.25 mm (about 1 to 10 mils) and on the exposed side of the film an unbonded or weakly bound, non-woven fiber layer adheres and the overall thickness of the laminate is about Is 0.075 to 0.5 mm (about 3 to 20 mils). 5. Garment according to Claim 4, characterized in that that the non-woven fiber strip is arranged on a clothing side that is normally connected to the Carrier comes into direct contact. 6. garment NaOH claim 4 »characterized in that the adhesion Dafi of fibers to the film along a relatively short portion of the adhering lase * in comparison to the fiber length is present. 109838 / 1S76