公开(公告)号：WO2018196891A1

公开(公告)日：2018-11-01

申请号：PCT/CZ2018/050019

申请日：2018-04-23

Applicant: PROMENS A.S.

Inventor： BORUTA, Jaroslav ,  INDERKA, Jan ,  DEDEK, Hynek ,  KADLEC, Miroslav

IPC: B29C45/14 ,  B01D63/02 ,  F28F21/06 ,  B29C70/84

CPC classification number: B29C45/14016 ,  B01D63/021 ,  B01D63/022 ,  B01D2323/42 ,  B29C45/0003 ,  B29C45/14385 ,  B29C45/14565 ,  B29C70/10 ,  B29C70/48 ,  B29C70/56 ,  B29C70/845 ,  B29C2793/009 ,  B29L2031/14 ,  B29L2031/755 ,  F28F21/06 ,  F28F2255/06 ,  F28F2255/146 ,  F28F2260/02

Abstract: Creation of a spacially ordered system of hollow polymer fibres and fixation thereof in polymer edges (selvedges) made of a polymer are carried out in a combined device employing immediately successive steps in such a way that the hollow polymer fibres are wound off from separate creel reels and the entire hollow fibre system is parallelly fed in an ordered state directly into an open mould located in an injection module. After closing the mould, a reactive mixture is injected into the mould to form the polymer edges, which fix the position of the hollow polymer fibres. The production of the primary element of the heat-transfer surface area for a heat-exchanger or the primary element for the separation module is finished by separating a part of the edges in the direction crosswise to the direction of the hollow polymer fibres by cutting or by a combination of cutting and breaking.

公开(公告)号：WO2019228576A1

公开(公告)日：2019-12-05

申请号：PCT/CZ2019/050024

申请日：2019-05-24

Applicant: PROMENS A.S.

Inventor： BORUTA, Jaroslav ,  PECHA, Frantisek ,  VACULIK, Tomas ,  KOLARIK, Tomas ,  KADLEC, Miroslav

IPC: C08J9/34 ,  C08J9/38 ,  B29C44/06 ,  F02B77/13 ,  B29C44/56 ,  B60R13/08

Abstract: This invention relates to a method of producing a polyurethane multilayer compact (single-piece) engine cover featuring high sound-absorption properties, high heat resistance, quality outer surface appearance, low weight and increased protection of pedestrians in a collision with a car. The high sound- absorption performance of the engine cover is achieved by using a combination of skin making procedures consisting in spraying PU reactive system forming the compact PU layer with a density of 700 kg/m3 at minimum, and subsequent foaming with a suitable soft PU foam having a highly open structure, employing a suitable release agent capable of creating an open structure on the reverse side of the engine cover, and a procedure of subsequent partial tear of the foam structure of the finished engine cover. The production process is a sequence of partial technological steps, at the end of which a final engine cover in a state prepared for fitting is obtained.