Apparatus for the continuous fabrication of fiber reinforced plastic profile members

Claim 1

An apparatus for the continuous fabrication of fiber reinforced plastic profile members, comprising a continuous impregnation device for impregnating fibrous mats with a liquid hardenable plastic reaction mixture, said fibrous mats moving in a predetermined direction of travel, a transport and forming device arranged after said continuous impregnation device with respect to the direction of travel of the fibrous mats for drawing-through, forming and hardening the impregnated fibrous mats, said continuous impregnation device comprising two superimposed and spaced contact and guide plates, said two contact and guide plates successively forming a continuously tapering inlet zone and an outlet zone, and at both sides of the contact and guide plates two edge guide zones for receiving the marginal edges of the through-passing fibrous mats, said two edge guide zones formed by confronting surfaces of said spaced contacting and guide plates freely communicating with the ambient atmosphere, the spacing between the confronting surfaces forming said two edge guide zones being effective for compressing the marginal edges of the throughpassing fibrous mats for restricting the lateral outflow of impregnated plastic through the marginal edges of the through-passing fibrous mats into the atmosphere while at the same time permitting air entrained in the fibrous mats to escape to the atmosphere through the marginal edges of the fibrous mats, one of said contact and guide plates being provided with an impregnation recess at a location between the inlet zone, the outlet zone and the lateral edges guide zones, said impregnation recess being positionally oriented transversely with respect to the direction of travel of the fibrous mats, said impregnation recess in the lower contact and guide plate descending via a sharp edged, linear step from the inlet zone and spaced thereafter asymptomatically merging with the outlet zone, and infeed conduit means flow communicating with said impregnation recess for the infeed of the liquid plastic reaction mixture which is under pressure.

Claim 2

An apparatus for the continuous fabrication of fiber reinforced plastic profile members, comprising a continuous impregnation device for impregnating fibrous mats with a liquid hardenable plastic reaction mixture, said fibrous mats moving in a predetermined direction of travel, a transport and forming device arranged after said continuous impregnation device with respect to the direction of travel of the fibrous mats for drawing-through, forming and hardening the impregnated fibrous mats, said continuous impregnation device comprising two superimposed and spaced contact and guide plates, said two contact and guide plates successively forming a continuously tapering inlet zone and an outlet zone, and at both sides of the contact and guide plates two edge guide zones for receiving the marginal edges of the through-passing fibrous mats, said two edge guide zones formed by confronting surfaces of said spaced contacting and guide plates freely communicating with the ambient atmosphere, the spacing between the confronting surfaces forming said two edge guide zones being effective for compressing the marginal edges of the throughpassing fibrous mats for restricting the lateral outflow of impregnated plastic through the marginal edges of the through-passing fibrous mats into the atmosphere while at the same time permitting air entrained in the fibrous mats to escape to the atmosphere through the marginal edges of the fibrous mats, one of said contact and guide plates being provided with an impregnation recess at a location between the inlet zone, the outlet zone and the lateral edges guide zones, said impregnation recess being positionally oriented transversely with respect to the direction of travel of the fibrous mats, said impregnation recess in the lower contact and guide plate descending via a sharp edged, linear step from the inlet zone and spaced thereafter asymptomatically merging with the outlet zone, and infeed conduit means flow communicating with said impregnation recess for the infeed of the liquid plastic reaction mixture which is under pressure.

Claim 3

An apparatus for the continuous fabrication of fiber reinforced plastic profile members comprising an impregnation device for impregnating fibrous mats with a hardenable liquid plastic reaction mixture, said impregnation device having a throughpassage channel possessing a predetermined height and serving for the movement therethrough of the fibrous mats in a predetermined direction of travel, a transport device arranged after said impregnation device with respect to the direction of travel of the fibrous mats for drawing the impregnated fibrous mats through the impregnation device, said impregnation device comprising two superimposed and spaced contact and guide plates, said two contact and guide plates defining therebetween the throughpassage channel and providing a tapering inlet zone and an outlet zone, and at both sides of the contact and guide plates two edge guide zones for receiving the marginal edges of the throughpassing fibrous mats, said two edge zones formed by confronting surfaces of said spaced contacting and guide plates freely communicating with the ambient atmosphere, the spacing between the confronting surfaces forming said two edge guide zones being effective for compressing the marginal edges of the throughpassing fibrous mats for restricting the lateral outflow of impregnated plastic through the marginal edges of the through-passing fibrous mats into the atmosphere while at the same time permitting air entrained in the fibrous mats to escape to the atmosphere through the marginal edges of the fibrous mats, one of said contact and guide plates providing an impregnation chamber at a location between the inlet zone, the outlet zone and the lateral edge guide zones, said impregnation chamber terminating inwardly of the two edge guide zones and extending transversely with respect to the direction of travel of the fibrous mats, said impregnation chamber, viewed in the direction of travel of the fibrous mats, including a substantially step-like portion following the inlet zone and spaced therefrom transforming by means of a substantially wedge-shaped portion into said predetermined channel height at the region of the outlet zone, and infeed conduit means flow communicating with said impregnation chamber for the infeed of the liquid plastic reaction mixture which is under pressure.

Claim 4

An apparatus for the continuous fabrication of fiber reinforced plastic profile members comprising an impregnation device for impregnating fibrous mats with a hardenable liquid plastic reaction mixture, said impregnation device having a throughpassage channel possessing a predetermined height and serving for the movement therethrough of the fibrous mats in a predetermined direction of travel, a transport device arranged after said impregnation device with respect to the direction of travel of the fibrous mats for drawing the impregnated fibrous mats through the impregnation device, said impregnation device comprising two superimposed and spaced contact and guide plates, said two contact and guide plates defining therebetween the throughpassage channel and providing a tapering inlet zone and an outlet zone, and at both sides of the contact and guide plates two edge guide zones for receiving the marginal edges of the throughpassing fibrous mats, said two edge zones formed by confronting surfaces of said spaced contacting and guide plates freely communicating with the ambient atmosphere, the spacing between the confronting surfaces forming said two edge guide zones being effective for compressing the marginal edges of the throughpassing fibrous mats for restricting the lateral outflow of impregnated plastic through the marginal edges of the through-passing fibrous mats into the atmosphere while at the same time permitting air entrained in the fibrous mats to escape to the atmosphere through the marginal edges of the fibrous mats, one of said contact and guide plates providing an impregnation chamber at a location between the inlet zone, the outlet zone and the lateral edge guide zones, said impregnation chamber terminating inwardly of the two edge guide zones and extending transversely with respect to the direction of travel of the fibrous mats, said impregnation chamber, viewed in the direction of travel of the fibrous mats, including a substantially step-like portion following the inlet zone and spaced therefrom transforming by means of a substantially wedge-shaped portion into said predetermined channel height at the region of the outlet zone, and infeed conduit means flow communicating with said impregnation chamber for the infeed of the liquid plastic reaction mixture which is under pressure.