Abstract:
A coated leather, in particular split cowhide leather, has a preferably nubuck-like appearing surface structure. The coating is formed with a surface layer formed with a mechanically and moisture-stable polymer and bonded to the surface of the leather or split leather by a polymer-based bonding layer. The outer layer is notable for inner smoothness and is formed with soft polyurethane. It includes in the non-embossed region microdepressions which are essentially closed in the direction of the leather but are open towards the outside, have an internal width of less than 130 μm and are arranged close-packed to each other in the manner of soapy foam cells. The microdepressions are each separately bounded by thin mutually crosslinked stays which have on the outside a matt or finely fibrous fine-roughness structure surface, and have an essentially semispherical-shaped concave inner surface which faces outward and is smooth. The coating may include two or more layers that are riveted to each other by way of pins or the like that are anchored in pores.
Abstract:
In order to impart the requisite softness and friction-resistance properties, but especially the requisite air- and water vapor-permeability properties, to a substrate having a velvet-like, fine-grained surface, in particular a shagreen having a polished surface or a synthetic velvet provided on its visible side with a dressing having a shagreened structure and made of a solidified plastic dispersion separately produced on a support having a structured surface that corresponds to the shagreened structure, the dressing comprises capillaries which extends through its entire and substantially constant thickness, and is joined to the substrate by a thin connection layer made of a solidified plastic dispersion.
Abstract:
An apparatus for producing a coating on a laminar carrier member, in particular for dressing split leather or similar substrates, comprises a supporting base having a surface consisting of silicon rubber or silicone resin, onto which surface is applied a liquid coating material by means of an electrostatic spraying device arranged above the supporting base for the purpose of producing a foil forming the visible side of the coating after solidification of the coating material. The surface of the supporting base is preferably provided with an embossed pattern, for example with the grain structure of natural leather. For the purpose of improving the adhesion of the foil, formed by solidification of the liquid coating material, on the supporting base, the surface of this supporting base is provided with a microscopic roughness. Alternatively, the area of the supporting base adjacent the aforesaid surface is made electrically conductive and held at a predetermined electrical potential. Microscopic roughness can be obtained by embedding filler materials within the area of the surface of the supporting base. Microscopic roughness can, also be obtained by mechanical, electrical, and/or chemical surface treatment.
Abstract:
Tires are improved against puncture damage by at least partially filling the inside of the tire with hollow spheres which contain a gas and whose thin shell consists of synthetic material, these spheres having a diameter of between 0.01 and 0.04 mm. and a density of 0.005 to 0.25 g/cc., and/or by lining at least a portion of the surface of the inner wall of the tire with a strip of composite material of low density comprising a suspension of said hollow spheres in a mass of liquid or pasty synthetic material of low molecular weight.
Abstract:
A composite material has a polymeric upper layer which is connected via at least one adhesive layer to a substrate. The substrate is predominantly or entirely formed by an open-cell polyurethane foam onto which the upper layer, containing between 2 and 12 wt % of polysiloxane, is bonded by an adhesive layer. An intermediate layer or a double layer, i.e. a composite of the intermediate layer with a bonding layer located between the substrate and the intermediate layer, is provided between the upper layer and the substrate as the adhesive layer for joining the upper layer and the substrate. The regions of the substrate into which the polyurethane dispersion of the adhesive layer has penetrated in a controlled manner during application have a density which is between 12% and 48%, above the density of the regions of the substrate without the adhesive layer.
Abstract:
The invention relates to a multilayered cut-to-size format comprising a thin, polyurethane-based coating (2) bonded via a polyurethane adhesive layer (3) to a textile backing (4).The invention provides that the backing (4) is a textile backing layer formed using a loop-formingly knitted fabric, a woven fabric or a fibrous non-woven web and having a thickness between 0.25 and 1.2 mm; there are capillaries in the coating (2); the solidified polyurethane dispersion (3) has a basis weight between 65 and 155 g/m2 and reaches by between 0.02 and 0.55 mm into the backing (4) non-filmingly; the coating (2) has a thickness of 0.09 to 0.21 mm and a hardness between 25 and 55 Shore A; and the backing (4) is bonded on its side opposite the coating (2) to a layer (5) of polychloroprene foam which has a closed-cell structure of the foam rubber type and a density between 0.05 and 0.42 g/cm3, preferably between 0.06 to 0.28 g/cm3.
Abstract translation:本发明涉及一种多层切割尺寸格式,包括通过聚氨酯粘合剂层(3)粘合到织物背衬(4)的薄的基于聚氨酯的涂层(2)。 本发明提供背衬(4)是使用环形成针织织物,机织织物或纤维无纺网形成并具有0.25至1.2mm厚度的织物背衬层; 涂层中有毛细管(2); 凝固的聚氨酯分散体(3)具有65至155g / m 2的单位面积,并且以非膜的方式到达背衬(4)的0.02至0.55mm之间; 涂层(2)的厚度为0.09至0.21mm,硬度为25至55肖氏A; 并且背衬(4)在其与涂层(2)相对的一侧上粘合到具有泡沫橡胶类型的闭孔结构并且密度在0.05至0.42g / cm 3之间的聚氯丁二烯泡沫的层(5),优选地 0.06〜0.28g / cm3。
Abstract:
The invention relates to a cut-to-size format comprising a more particularly sheeting-shaped or layer-shaped backing material (2) comprising a fibrous nonwoven web and/or loop-formingly knitted and/or woven fabric comprising polyamide and/or polyester threads, more particularly polyamide and/or polyester microfibers and/or cotton threads and, applied atop the backing material (2), a coating (4) comprising polyurethane dispersion on a patterned silicone rubber support/mold attached to the backing material (2), optionally via an adhesive layer (7) comprising polyurethane dispersion.The invention provides that the entire polyurethane content of the cut-to-size format (1) is in the range from 60 to 240 g/m2, this basis weight also including any polyurethane already present in the backing material (2) or introduced thereinto in the course of production thereof, and the basis weight of the backing material (2), in particular where applicable any polyurethane present therein, is in the range from 200 g/m2 to 450 g/m2 (FIG. 1).
Abstract translation:本发明涉及一种切割尺寸格式,其包括更特别的片状或层状背衬材料(2),其包括纤维非织造纤维网和/或成形织物和/或织物,其包含聚酰胺和/或聚酯 螺纹,更特别是聚酰胺和/或聚酯微纤维和/或棉线,并且涂覆在背衬材料(2)的顶上,包含聚氨酯分散体的涂层(4),所述涂层(4)在附着到背衬材料(2)上的图案化硅橡胶支撑件/模具上, ,任选地经由包含聚氨酯分散体的粘合剂层(7)。 本发明提供了切割尺寸形式(1)的全部聚氨酯含量在60至240g / m 2的范围内,该基重还包括已经存在于背衬材料(2)中的任何聚氨酯或引入其中的聚氨酯 在其生产过程中,背衬材料(2)的基重,特别是在适用的情况下,其中存在的任何聚氨酯的含量在200g / m 2至450g / m 2的范围内(图1)。
Abstract:
A full-grained milled napa leather is provided on its grain side with a dressing formed from a solidified plastics dispersion. Required leather properties are still ensured and the production process is substantially simplified and more economical. First, the leather, such as cowhide, is subjected on a mechanically untreated grain side to a milling process for at least two hours. This results in a typical napa structure with a natural pebbled grain. Then, a polyurethane dispersion is applied to the grain side containing pigment particles and optionally further additives. Then the hide is allowed to dry. The solidified dispersion forming the dressing has a thickness of, preferably, from 0.05 mm to 0.07 mm.
Abstract:
The leather has a finish on a buffed surface. The finish layer is formed in a plurality of layers including an outer layer with a given hardness and a particular surface effect preformed in a hot substrate having a structure corresponding to the particular surface effect the outer layer being formed of a solidified, cross-linked, hydrolysis-resistant, lightfast, polyurethane-containing dispersion, and having a thickness of between 0.01 and 0.08 mm, and an inner layer bonded to the buffed surface leather and comprising a solidified, highly crosslinked, hydrolysis-resistant, lightfast, polyurethane-containing dispersion and having a hardness less than a hardness of the outer layer.
Abstract:
An athletic shoe, such as a soccer shoe, has an upper defining a toe region, an insole connected to the upper, and an outsole secured to the insole. A vamp in the toe region is joined to the insole. The vamp is a full-grain leather composed of a grain layer and a leather fiber layer joined to the grain layer. An elastomeric coating is disposed on and partway penetrates into the leather fiber layer in a region where the fiber layer is joined to the insole. The coating has a thickness above the surface of the leather fiber layer of at least 0.1 mm. The coating may also be disposed in a region adjoining the region where the fiber layer is joined to said insole. The coating may also be reinforced with an embedded reinforcement.