DE7030832U - SHOE MADE FROM FLEXIBLE RAIL MATERIAL. - Google Patents

Description

BANK ACCOUNT: BANKHAUS H. AUFHAUSeR

RO 4691

τ HE püHLOP COMPANY L IM ITE Κ »

LONDON, UKIi

Flexible web material

The invention relates to flexible sheet material, in particular its Use for the manufacture of shoes.

According to the invention, a shoe contains flexible sheet material in its structure from a single sheet of compressed, cross-linked or cross-linked cellular plastic containing a binder .

The flexible sheet material is particularly suitable as a shoe upper material, however, it can also be used with other parts of the shoe, for example in the putter

The flexible sheet material consists of a single sheet of compressed networked or cross-linked cellular plastic, the is impregnated with a binder, d. H. the material contains

no laminate of the compressed web with other web material, However, it does contain a finishing or finishing mix. 2 <is cellular plastic material is preferably a corroded one Polyurethane foam, in particular a polyurethane foam on an average density of 0.3 to 0.9 g / cnr at a compression ratio is compressed from 10: 1 to 60: 1 and has a preferred number of pores from 16 to 40 pores / cm. The cellular Plastic web can be compressed in a suitable manner, for example between press plates in a mold between two revolving belts or between a belt and a drum. Preferably the compressed web has in the Close one of its faces to a higher density, which is achieved by heating one face of the web to a higher temperature than that of the other can be seen during compression. When using as a shoe upper, the area with the higher density is usually the outer one. The density can vary from one face to the other of the web change from 0.9 to 0.3 g / cm.

The compressed web is preferably impregnated with a binder by placing the web on the surface of a binder bath floats and allows the binder to penetrate upwards into the web without any external physical influence is exercised, such as pushing or pressing. The binder is preferably applied as an elastomer latex. Examples of suitable binder latices are natural rubber, polychloroprene, styrene / butadlene, butadiene / methyl methacrylate, Ethylene / vinyl acetate, polyurethane and polyacrylate rubber. The binder in the flexible sheet material should, of course, be flexible and, if desired, can be thermoplastic be. Preferably the binder is heat sensitive. If desired, the binding agent can be distributed differently within the cellular plastic web by a surface the impregnated sheet is heated differently than the other surface. A preferred binder is a heat-resistant

Herbal polyacrylate composition.

The composition of the binder impregnation can be accordingly the desired properties of the flexible sheet material can be changed. The binding agent can, for example, be the material Protect against moisture aging, color the material, improve its water absorption capacity, a base for application form a coating, form a Baals that can be embossed and / or increase the energy loss at high frequency, so that the material can be welded using high frequency. To the . Improvement of the high temperature properties of the material and / or to improve heat weldability, the binder can be used be thermoplastic.

The binding agent impregnation is preferably within the cellular Plastic web gelled under conditions that prevent the formation of a binder skin on the web. this can be achieved by passing the impregnated compressed web between two rollers, their gap is about the same or / less than the strength of the impregnated Web so that excess binder is removed from the web. The web is then heated to make the binding agent lighter. the Gelation can expediently between a rotating drum and a synchronously running tape, the Distance between drum and belt can be adjusted, for example, by two radial planes on the drum, between which the compressed web is passed through. The height of the splash from the drum surface should be about the same or slightly less

than be the strength of the compressed web. If so desired the drum provided with splash can also act as one of the nip rollers that remove the excess binder mass in front of the Remove gelation from the compressed web. In this pail the gap is equal to the height of the flange on the drum surface. Impregnation and gelling can expediently be continuous take place.

The impregnated compressed web can, if desired, be coated with a Jisiu Dscküberzug made of a polymeric composition, for example with a mass of polyurethane, polyacrylate, polyacrylonitrile, nylon or a mixture thereof. There may be two or more different top coating layers are applied and the flexible sheet can be embossed, if desired, usually a top coat is applied when the flexible sheet material is used as Schuhofcematerial.

The flexible sheet material is normally permeable to water vapor and impermeable to water, is flexible and has the abrasion resistance and tear resistance required for a shoe upper. Although its tear resistance is below Under certain circumstances, that of natural leather cannot be achieved, the tear resistance of natural leather is ideal for applications such as shoe upper material unnecessarily high.

The invention is to be explained in more detail using the following examples:
example 1

An Elock made from reticulated or cross-linked polyester-polyurethane foam with an average density of 30 kg / m and an average The pore number of 25 pores / cm became a sheet having a thickness cut from 40 mm. The foam sheet was compressed to a thickness of 1.7 mm and an overall density of 0.68 g / cm by it with 30 cm / min between a circumferential, with polytetrafluoroethylene coated oil-heated drum with a diameter of 60 cm and a surface temperature of 200 C and one synchronized running flexible metal tape was passed on the web under a pressure of 4.2 kg / cm. The product had a density that varied beyond its strength.

703ύδοΐ _: .2Λ 71

Together to ~ A Composition B 300 ■ Q 75 120. 60 0 0 22nd 50 30th 10 · ο
(1.0 w4
g / ft ² ) 2
(1.5 g / ft)

A backing paper (Striplcove AH / ER by SD tfarren Co.) was coated with a coating of Composition A shown below by spraying and dried at 80 ° C. Thereon a coating of the following composition B was applied by spraying and, in turn, at 80 ⁰ C dried.

Parts by weight (moist)

1 . Aquafast RS

2. Polyacrylate emulsion

3. Aquadye Black no.1

4. DP paste (black)
water

Total dry weight applied to the paper

In it are:

1. An aqueous emulsion of nitrocellulose solution of the Progressive Pinishes Ltd.

2. An aqueous emulsion of a copolymer of ithylacrylate (74 %), methyl acrylate (20 % ), methacrylic acid (3 %) and N-methylolacrylamide (3 %) ·

3. A staining solution from Progressive Pinishes Ltd.

4. An aqueous pigment dispersion (45 % pesticides) from Progressive Pinishes Ltd.

The acrylic coating was transferred to the compressed web by placing the coated side of the carrier paper in contact with the denser side of the compressed web at 60 cm / sec between a set of rollers with a gap of 0.71 mm less than the total thickness of the compressed web, the coating and the backing paper was passed through. The standing with the Irägerpfepier in touch roll was heated to 18O ° C and the other roll was kept at room temperature (about 2O ⁰ C). Well ~ h

7Ο3 '"8ύ1.2 L 71

the cooling was the backing paper of Ciot material thus prepared removed, the LLID dried at 100 ⁰ O 10 minutes laug in an air oven at 150 ⁰ O cured was

The product was an abrasion-resistant leather-like material with a Water vapor permeability of 1.35 mg / cm / h, measured according to S.A. T. R. A. at a density of 0.7 g / cm. The product had a puncture tear resistance (S.A.T.R.A.) of 4.3 kg / cm, but was severely torn after 0.2 10 bends.

A 30 mm thick web of the same crosslinked foam was compressed to an average thickness of 1.75 nm by moving it at 75 cm / min between a rotating, oil-heated drum with a diameter of 60 cm and a surface temperature of 200 ^° C., coated with polytetrafluoroethylene and one synchronized

2 running metal belt under a pressure of 2.7 kg / cm on the Web was passed through. The compressed web had a smooth and very dense surface and a surface with a low surface Density. The total density of the product was 0.56 g / cm, the puncture tear strength was 10.7 kg / cm.

The compressed web, after cooling, was impregnated from the low density side while resting on a latax bath the following composition swam:

Parts by weight (feucnt)

Acrylic latex (total pesticide content 45% by weight) 100

2% by weight aqueous solution of methyl cellulose "5.0 2 wt .- ^ ige aqueous solution of a polyethylene oxide glycol derivative of octylphenol 10.0 10% strength by weight aqueous solution of oxalic acid 10.0

The acrylic latex i3t under the trade name Primal HA. 24 (from Lennig Chemical Co. Ltd.), the methyl cellulose solution under the Trade name Methocel MC 4 000 and the Polyäthylenoxyd-Glykoideri.-vat available under the trade name Antarox CA 630.

7030852 v _? α ₇₁

Bc. Removal of all air from the foam web and after the latex was up to the surface engages with the higher density, the web between a moving belt and a rotating synchronously, flanged smooth drum of 30 cm diameter, which was erheizt at 8O ⁰ C was , passed through. Excess latex was squeezed out at an entrance gap formed by the flanged drum and roller. The flanges on the drum were 1.7 mm high.

The product gelled within 20 seconds and was then removed, washed and dried in an air oven. An acrylic topcoat was applied to the impregnated sheet in the manner described above and the product was dried ^{in an air oven at 150 ° C for 10 minutes.}

The 1.7 mm thick product felt leathery and had a density of 0.8 g / cn ^J. The product withstood the SATRA sheet test with 10 ⁶ bending cycles without damage, had a water vapor permeability of 1.1 mg / cm / h, measured according to the SATHA test and, according to SIA.TRA, had a tear strength of 16 kg / cm. The material is water-absorbent and feels dry. It is ideally suited as a shoe upper material. It can also be embossed at low temperatures and pressures before the top coat cures.

Example 2

A 40 mm thick web according crosslinked polyurethane foam. Example 1 for 5 minutes compressed to a uniform density of 0 »7 g / cm ^{for 5} seconds, in a mold having a -flatten-ρ ress, the uniformly to 160 ⁰ C. was heated up. The web was removed from the cooled mold and a topcoat was applied according to Example 1.

The product was flexible and leathery and had a strength of

2 1.78 mm with a water vapor permeability of 1.8 mg / cm / h measured according to aem S.A.T.R.A. test. The puncture resistance of the According to S.A.T.R.A. 12.8 kg / cm, however, was after only 0.4 χ 10 bending cycles severely torn.

A 30 mm thick sheet of cross-linked em polyurethane foam according to Example 1 of a uniformly heated to 16O ⁰ O distance form wurde.in for 5 minutes to a thickness of 1.7 mm and a "density. Oi 53 g / cii3 compressed. The product had a stitch tear strength of at east, east kg / cm. the sheet was impregnated with acrylic latex and after the procedure given in example 1. Then the web EIIA a-ryldeckschicht was applied as in example 1 to a surface and the product at 100 ⁰ G dried and ^{cured at 150 °} C. for 10 minutes.

The 1.77 mm thick product with a density of 0.70 g / cm ⁵ felt leather-like and had a water vapor permeability of 1.0 mg / cm / h, measured according to the SATRA test. The puncture tear strength was 13 kg / cm measured according to SATfi.A. and survived. 10 bending cycles without destruction. The material was water-absorbent and continued to feel dry. jss was therefore ideally suited as a shoe upper material. The material can also be easily embossed at low temperatures, doors and pressures prior to curing of the topcoat.

Example 3

A 30 cm wide foam sheet with a thickness of 30 am and one average density of 30 kg / m and a pore number of 25 pores per cm was 5 minutes to a thickness of 0.175 ca and a Total density of 0.45 g / cm in a spacer form using a plate press heated evenly to 160 ° C komprl? mated. The oann was removed from the ora in a hot state and chilled.

The compressed Schaüüi'üäiVü WUiuc iuiyxägüiext, iuäcui ιιΐί * η you a.UX " a latex bath of the following non-gelling composition let swim:

Parts by weight (moist)

Acrylic latex (total solids content 60% by weight) 100 Aqueous dispersion of white pigment

(Total solids content 3 wt- #) 8.0.

Aqueous dispersion of dark brown pigment

(Gesant pesticide content 32 wt .- ^) 6.5

Aqueous dispersion of brown pigment

(Total solids content 46% by weight) 0.5

Water 30

Ethylene oxide adduct of ionylphenol 0.225

Acrylic latex is available under the trade name Primal E. 358 (the company Lennig Chemical Go. Ltd.), the pigments under the trade name Primal (Lennig Chemical Co. Ltd.) and the ethylene oxide adduct under available under the trade name Lissapol N (I.C.I. Ltd.).

The latex penetrated to the upper surface of the foam web, which was then between two ironer rollers rotating at 120 cm / min with a gap of 0.075 cm was passed through to remove excess Remove latex.

The impregnated foam sheet was placed against an acrylic top layer according to Example 1 with backing paper - and the whole thing was placed at 120 cm / min between a 40 cm wide, tensioned, stainless, revolving steel belt and a synchronously revolving smooth drum with a diameter of 30 cm and at a temperature of 120 ° 0, with the base of backing paper touching the heated drum. It was found that the ^{waterproofing agent had penetrated from} the cooler surface of the foam, leaving the moist product clean as it exited the drum

703G832 /2.i 71

has been detached from the tape. The top coat adhered well to the surface of the product. The carrier paper of the finished surface .wurde evaporated and the product dried at 100 ⁰ G and cured thereon in an air oven for 10 minuter at a temperature of 15O ⁰ C.

The 1.8 mm thick product had a density of 0.7 g / cm, felt leathery and had a water vapor permeability of 2.0 mg / cm ² / h, measured according to the SATRA test. The puncture tear strength of the product was 10 kg / cm according to SATRA and withstood 10 bending cycles without destruction. The material could easily be embossed at low temperatures and pressures before the top coat cured. It was ideally suited as a shoe upper material.

In the attached single figure is a device for impregnation of the foam as it was used in Example 2 for impregnating the foam sheet.

In the device shown in FIG. 1, a foam base 1 from a supply roll 2 via a guide roll 3 and the surface a latex bath 4 out. Here the web soaks up latex and now gets into a gap between a heated drum 5 and a pressure roller 6, from which the excess latex in a Container 9 drains. Above the heated iromael and opposite j & er There is a further turning roller 7 on the pressure roller 6. Furthermore, a guide roller 8 is guided approximately at the level of the heated drum and at a distance from it. About the heated drum 5, the pressure roller 6 and the two deflection rollers 7 and 8, an endless flexible belt 10 is guided through which the foam web is attached a part of the periphery of the heated drum 5 is held. At the guide roller 7 comes out of contact with the flexible web heated drum, will continue through part of its circumference

the pulley 7 out and finally does not come to a shown recording role. On the outer surface of the heated Drum 5 are paddles 5 'attached through which the gap between the heated drum and the platen 6 is set.

703C832-2. ^ 71

Claims (12)

SCHUT ZANSFRUGHE 1. Shoe that contains a flexible sheet material in its structure, characterized in that the flexible sheet material consists of a single sheet of compressed reticulated or reticulated cellular plastic material that contains a binder. 2. Shoe according to claim 1, characterized in that the flexible sheet material is used as the upper of the shoe is. 3. Shoe according to claim 1 or 2, characterized in that that the flexible sheet material consists of a sheet of compressed, crosslinked polyurethane foam. 4. Shoe according to claim 3, characterized in that the mean density of the compressed foam is between 0.3 and 0.9 g / cm ⁵ . 5 · Shoe according to one of the preceding claims, characterized in that the compressed cell-shaped Plastic sheet has a higher density near a surface. 6. Shoe according to one of the preceding claims, characterized in that the binder in the cell-shaped Plastic material is introduced by placing the compressed cellular plastic sheet on the surface a binder bath swim and the binder after can penetrate up into the web. 703C832.7.A 71 7. Shoe according to one of the preceding claims, characterized in that the binder as Elastcmerlatex is introduced into the cellular plastic material d. Shoe according to claim 7, characterized in that the elastomer latex consists of an Lctex made of natural rubber, Polychloroprene, styrene / butadiene, butadiene / methyl methacrylate, Ethylene / vinyl acetate, polyurethane or polyacrylate rubber consists. 9- shoe according to one of the preceding claims, characterized in that the binding agent within the flexible üahnmaterials is distributed differently. 10. Shoe according to one of the preceding claims, characterized in that the containing the binder compressed cellular plastic web is provided with a top coating made of a polymer composition. 11. Shoe according to claim 10, characterized in that that the polymer composition consists of a mane of polyurethane, Polyacrylate, polyacrylonitrile, nylon or a mixture thereof. 12. Shoe according to claim IQ or 11, characterized net that the top coat has two or more top layers contains.