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Patent Agency Ranking
公开(公告)号：DE4226150A1
公开(公告)日：1994-02-10
申请号：DE4226150
申请日：1992-08-07
Applicant: BASF AG
Inventor： CRAMER EDWIN DR , FOLDA THOMAS DR , SCHUERMANN HELMUT DR
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公开(公告)号：DE4300208A1
公开(公告)日：1994-07-14
申请号：DE4300208
申请日：1993-01-07
Applicant: BASF AG
Inventor： SCHUERMANN HELMUT DR , KAMPKE MANFRED DR
Abstract: Hollow articles such as tubes, tubular torsion bars, pressurised containers, etc. are produced in FRP with at least two layers in which the fibres are differently orientated about the length, whereby the articles are heated and subjected to a radially external force. In the process the fibres are wound on to a thermoplastic tube, the tube or whole assembly is raised to a temp. above the melting pt. of the thermoplastic, and the polymer is expanded out into the winding in a revolving hollow mould using centrifugal forces.
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公开(公告)号：DE4215756A1
公开(公告)日：1993-11-18
申请号：DE4215756
申请日：1992-05-13
Applicant: BASF AG
Inventor： SCHUERMANN HELMUT DR
Abstract: A process produces hollow bodies such as pressure bottles, pipe etc. where they are made up of two layers i.e. an inner layer and an outer layer of FRP. The inner body is e.g. extruded, injection or blow moulded and is wound round with a hybrid yarn of reinforcing and thermoplastic fibres. The winding is heated to 20-50 deg. C above the melting pt. of the thermoplastic used and is compressed and consolidated. It is held in this compressed state until the outer layer is made and bonded to the inner layer. ADVANTAGE - The two-layer products are well made. They have good adhesion between their layers.
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公开(公告)号：DE4126826A1
公开(公告)日：1993-02-18
申请号：DE4126826
申请日：1991-08-14
Applicant: BASF AG
Inventor： CRAMER EDWIN DR , HESSE ANTON DR , PETER ROLAND DR , SCHUERMANN HELMUT DR
IPC: C08F290/14 , C08G18/67 , C08L75/16
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