The present invention discloses a planishing method for joined sheets made of a thermoplastic material. Welded ends of the plastic sheets are placed between two platens. The platens are heated to raise the temperature of the plastic material a sufficient amount to soften the plastic material without disturbing its molecular structure. The platens are pressed together with a sufficient pressure whi...

A process for preparing a slip and anti-blocking agent for polyolefin films is described. The process uses a fatty feed-stock comprising mono- and poly-unsaturated fatty acid species of which, calculated on the basis of equivalent fatty acid, more than 50% by weight is a fatty acid with at least 20 carbon atoms. The feed-stock may be a fatty acid as such, a fat or oil, or a fatty acid methyl ester...

RESIN IMPREGNATED FIBROUS PANELS AND METHOD OF MAKING SAME A process of manufacturing a fibrous resinated panel comprises compressing a fibrous mat impregnated with a thermosetting resin system in a mold cavity defined between an upper and a lower inner mold surface. The mold surfaces are maintained at a temperature within a selected temperature range for a selected period of time whereby the ther...

A rigid single- or multilayer non-oriented or monoor biaxially oriented film in which at least one layer comprises a cycloolefin copolymer, wherein the cycloolefin copolymer has an intrinsic E modulus (Ei) which has the following dependence on the glass transition temperature Tg: Ei = (0.0025 ¢GPa/.degree.C! x Tg ¢.degree.C!) + B ¢Gpa! where B - 2.93-3.19 and Tg is the glass transition temperature...

A flexible single- or multilayer non-oriented or mono- or biaxially oriented film in which at least one layer comprises a cycloolefin copolymer, wherein the cycloolefin copolymer has a mechanical loss factor (tan .delta.) of ?0.015 at 50.degree.C below the glass transition temperature.

A film including semi-crystalline cycloolefin copolymers which have a content of catalyst residues of < 100 ppm and their use as capacitor films, reproduction films, film keyboards and film switches, substrates for liquid crystal displays and packaging films.

Method of manufacturing plasterboards comprising a gypsum layer between two cardboard sheets adhering to said gypsum layer, a mixture of calcined gypsum, water, wetting agent and starch being applied between the cardboard sheets. The mixture comprises also at least one low molecular weight carbohydrate with a migration velocity which is higher than that of starch in order to strengthen the adhesio...

Method of manufacturing plasterboards comprising a gypsum layer between two cardboard sheets adhering to said gypsum layer, a mixture of calcined gypsum, water, wetting agent and starch being applied between the cardboard sheets. The mixture comprises also at least one low molecular weight carbohydrate with a migration velocity which is higher than that of starch in order to strengthen the adhesio...

LOCKING RING FOR AN ACETABULAR CUP The metal lock ring of the invention has an oblong exterior periphery which allows the ring to have a small "width" and a larger "height." The small "width" provides a strong locking mechanism on the poly liner and the larger "height" allows the ring to remain secure within the groove of the metal shell prior to and during assembly of the polyethylene liner. The ...

To prevent body fluids from flowing backward through a liquid-permeable topsheet 2 for use in body fluids absorptive goods 1, the topsheet 2 is formed by a nonwoven fabric made of thermoplastic synthetic fibers appropriately fused together and the sheet 2 is provided with openings 16 and a skin-contacting region 17 continuously extending around the openings 16. A first zone 11 of the topsheet 2 ha...

A relatively simple inflatable chair for use on the land or in the water includes identical seat and backrest tubular ovals with straight ends interconnected by buckle-type hinges for rotation between a use position and a folded carrying position; a generally U-shaped stand hingedly connected to the rear surface of the backrest for movement between a folded position against the backrest and an ext...

The invention relates to a method and device for controlling the rate of flow of fresh air in high speed trains with the aid of pressure wave valves. According to the invention, the object is achieved in that a signal for adjusting a drive unit (4) is determined from the number of passengers and the external temperature. This drive unit (4) moves a stop fork (3) into a flap stop position of the va...

The object of the invention is a circuit for monitoring the power of a transmitter amplifier. In the solution according to the invention, the detected DC voltage level (Vdet) corresponding to the output power is compressed at high output levels by using as the coupling capacitance a capacitance diode (7) such that the capacitance of this component, and thereby the tightness of the coupling, dimini...

The contact holder comprises a cylindrical body (2) of electrically insulating material formed with a plurality of seats (4, 6, 8) which can receive respective contacts (10). The body (2) has a first group of seats (4) located in a radial outer position and a second group of seats (6) located in a radially inner position. The body has an aperture (18) disposed in a radially inner position relative...