Plastics material mesh structures

Details Plastics material mesh structures Plastics material mesh structures

1992-09-30

1993-12-14

Corbin, David H.

Hydraulic and earth engineering

Earth treatment or control

2642884, 405284, 428229, E02D 1720, B29C 4908, B32B 512

Patent

active

052696316

ABSTRACT:
A starting material is provided having a rectangular grid of holes and the starting material is stretched in the MD to such an extent that the junctions are not significantly oriented, is stretched in the TD to such an extent that the junctions are not significantly oriented, and is finally stretched in the MD to such an extent that the junction centres thin down by at least 30% and there is significant narrowing down of the junction The resultant MD stretch is substantially greater than the resultant TD stretch. The MD strands, having thinned down and oriented to a substantial degree, cause the orientation to pass into the ends of the junctions and right through the junctions. The junctions increase in length by a ratio of at least about 2.5:1 and narrow down substantially. The ends of the junctions are not stretched more than 100% more than the centres. At each junction there is a thicker, parallel-sided, long zone which is oriented in the MD and has thinned down less than the mid-points of the MD strands so that there is continuous MD orientation running from end to end of the mesh structure. There are no dips in the junctions and the centres of the junctions are not substantially thinner than any other part of the junction on the MD centre line. There are biaxially-oriented zones on either side of the thicker zones, and oriented crotches connecting respective MD strands and TD strands, the biaxially-oriented zone merging gradually with the crotches.

REFERENCES:
patent: 3252181 (1966-05-01), Hureau
patent: 3386876 (1968-06-01), Wyckoff
patent: 3441638 (1969-04-01), Patchell et al.
patent: 3554853 (1971-01-01), Mercer et al.
patent: 3666609 (1972-05-01), Kalwaites et al.
patent: 3851034 (1974-11-01), Harmon et al.
patent: 3914365 (1975-10-01), Kim et al.
patent: 3922329 (1975-11-01), Kim et al.
patent: 3954933 (1976-05-01), Rasmussen
patent: 4013752 (1977-03-01), Kalwaites et al.
patent: 4101358 (1978-07-01), Kim et al.
patent: 4135021 (1979-01-01), Patchell et al.
patent: 4152479 (1979-05-01), Larsen
patent: 4186781 (1980-02-01), Kim et al.
patent: 4374798 (1983-02-01), Mercer
patent: 4374798 (1983-02-01), Mercer
patent: 4470942 (1984-09-01), Beretta
patent: 4530622 (1985-07-01), Mercer
patent: 4536429 (1985-08-01), Mercer
patent: 4590029 (1986-05-01), Mercer
patent: 4680215 (1987-07-01), Mercer
patent: 4743486 (1988-05-01), Mercer et al.
patent: 4804293 (1989-02-01), Varkonyi et al.
patent: 4808358 (1989-02-01), Beretta
patent: 4992003 (1991-02-01), Perach
Book entitled "Conweb Unoriented Plastic Netting".
Brochure entitled "`Tensar` Geogrids In Civil Engineering".
Brochure entitled "Tensar -- Guidelines for the design and construction of embankments over stable foundations using `Tensar` geogrids."
Conwed Oriented Plastic Netting.
Conwed Oriented Plastic Netting Samples.
Conwed Unoriented Plastic Netting.

Affiliated with

Also associated with

Rating

Plastics material mesh structures does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Plastics material mesh structures, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Plastics material mesh structures will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1700238