US 6,547,907 B1Granted

Method for producing a rotationally symmetric body

AssigneePhoenix Aktiengesellschaft

InventorsBurkhard Brink, Hans-Werner Friederich, Wolfgang Meyer

Life of this patent

Estimating the term…

Loading patent…

Abstract

The invention relates to a method for producing a rotationally symmetric body, especially a hose, specifically a large hose, by utilizing a rotating core as a supporting body for the inner layer; a device for storing and guiding the thread, the device being able to move back and forth in a parallel manner relative to the rotating core; and a molding head which can also move back and forth in a parallel manner relative to the rotating core and in which at least two reactive liquid or pasty components for the reaction are brought. The inner layer and the outer layer are constructed by means of the reaction mixture which exits the molding head. In addition, the thread is saturated with the reaction mixture during the production of the strength supporter, whereby the incorporation of the thread results during a reaction degree of no more than 50%. Useful method parameters are introduced.

Claims9

Dependent claims

A method for producing a rotationally symmetric body comprising the steps of;

i) supporting and rotating an inner layer of the body made of elastomeric material on a rotating core;
ii) guiding thread onto said inner layer via a winding device movable back and forth parallel in relation to a longitudinal axis of said rotating core, wherein said thread is applied as a continuous thread running back and forth around the body in the form of a steep helix, forming a plurality of layers of plies of thread with a crossed arrangement from layer to layer, and wherein said thread is arranged substantially parallel within a single layer of said plies of thread;
iii) mixing at least two reactive liquid or pasty components and forming a reaction mixture in a molding head;
iv) applying a reaction mixture via said molding head to said inner layer and said thread to form a strength supporter, wherein said molding head is movable back and forth parallel in relation to a longitudinal axis of said rotating core, and wherein said reaction mixture is incorporated with said thread when a reaction degree of said reaction mixture is less than or equal to 50% based on the start of said mixing process in said molding head;
and
v) covering said strength supporter with an outer layer made of elastomeric material.

3 more elements

Dependencies are inferred from the claim text.