Patent ID: 7192222

Claim:
A method of pneumatic conveyance, of glass fibres for increasing conveyance efficiency comprising: providing an apparatus having: (i) a conveying pipe with a shut-off device, which subdivides the conveying pipe into a first portion between a first end of the conveying pipe and the shut-off device and a second portion between the shut-off device and the second end of the conveying pipe, (ii) a charging device, which is connected to the first end of the conveying pipe by means of the shut-off device, (iii) a discharging device, which is connected to the second end of the conveying pipe, iv) a pressure conveying device, which is connected to the first end of the conveying pipe via a shut-off device, and (v) a suction conveying device, which is connected to the first portion of the conveying pipe via a shut-off device, and pneumatically conveying via said apparatus sized glass fibres which have a size extractability of at most 85% thereby conveying said glass fibres more efficiently.