CN201047082Y

CN201047082Y - Rough-surface geomembrane

Info

Publication number: CN201047082Y
Application number: CNU2007200379812U
Authority: CN
Inventors: 蒋薛华; 陈锡明
Original assignee: YIXING JINBA GEOSYNTHETICS CO Ltd
Current assignee: Jiangsu Jinba Environment Technology Co., Ltd.
Priority date: 2007-05-24
Filing date: 2007-05-24
Publication date: 2008-04-16
Anticipated expiration: 2017-05-24

Abstract

The utility model relates to an anti-seepage plastic geotechnic film with rough surface and is characterized in that the rough surface is the convex nail rough surface, the relatively high convex nail of which has the advantages of large frictional resistance after being laid and good skid-proof performance which is superior to the existing geotechnic film which adds roughness by spinning and chemical blowing, especially, when the utility model is used in the waste landfill site, the film slippage cannot occur when dumping the waste. The rolling nail making and film forming can realize the geotechnic film with broad width, and the maximum width of the film can reach 7m, which can reduce welding seams, save material, shorten working time, and speed up construction. Moreover, the thickness of the film is uniform, increasing the lapped weld quality obviously and ensuring the water proof property of the lapped seam. A non-convex nail lapping smooth edge of a certain width is left in two sides of the width of the film, reducing the polishing work load when lapping the film with rough surface and the damage to the film caused by polishing.

Description

Coarse-surface geomembrane

Technical field

Utility model relates to a kind of for example refuse landfill plastic leakage-proof geomembrane, relates in particular to the plastics coarse-surface geomembrane with crude surface.

Background technology

The plastics geomembrane is normally used for the antiseepage occasion, for example refuse landfill, and the existing plastics geomembrane overwhelming majority is the light face geomembrane of the face of pleasing both parties, for example blowing geomembrane.Light face geomembrane, its smooth surface, during use and the frictional force that paves between face little, easily cause relative slippage in the use with the face of paving, especially pave domatic, more be easy to generate the integral slipping of film.By adding the nail location, can cause the face breakage again, cause seepage, to subsidize the nail hole and make that again workload increases greatly, reality also is unallowed.For strengthening geomembrane and the frictional force between the face that paves, people propose exasperate film notion, promptly by at the film list or two-sidedly make roughly, to increase frictional force, improve the skid resistance of film.The geomembrane exasperate forms, and has the spray silk to add rough usually and chemical blowing adds rough dual mode, and face spray silk adds rough, and face spray silk can come off in actual the use, thereby has reduced non-skid property; The chemical blowing of interpolation blowing agent adds rough, then because of adding blowing agent and foaming, can reduce the mechanical performance of film, for example causes the reduction of film tensile strength.So Chinese patent CN200320119693.3 rough surface geomembrane, form by multi-layer co-extruded, and add the blowing agent foaming on the top layer and form exasperate, cause intensity effect for remedying foaming, alternate not smooth the face of foaming processing that be provided with remedies as strength-enhanced that hot strength reduces with this on the film matsurface.Yet this method increases exasperate by meeting and forms difficulty and cost of manufacture, and actual production is difficult to adopt.Secondly, above-mentioned two kinds add rough mode gained coarse-surface geomembrane, and limited because of the exasperate height of projection, thereby friction factor and skid resistance increase not quite, and it is still limited to lay skidproof effect in the gradient than macrodome.

In addition, existing geomembrane adopts the blown film method to produce substantially, blown film gained geomembrane, door width of cloth relative narrower, generally have only 4-6m, the narrow relatively door width of cloth causes that soldered increases in the work progress that paves, and not only is easy to generate seepage, and waste material, increase the man-hour of constructing, prolong construction speed.Secondly, the blowing geomembrane is in uneven thickness, run into hard thing and scratch easily and cause seepage at thin place, thick place then increases the cost waste material, especially gage distortion also is unfavorable for laying the overlap joint welding, because of the basic person of field Welding is undertaken by constant temperature constant speed mode, became uneven is even then can to influence the overlap joint welding quality, even takes place damaged.Besides, the exasperate film that the blown film method is produced, light face overlap edge can't be reserved in film width both sides, in work progress, need so at first overlap edge exasperate partly to be worn into the light face, and then weld, not only increased the overlap joint workload, but also easily the film surface has been frayed, influence welding fastness is easy to generate seepage.

The utility model content

The utility model purpose is to overcome the deficiency of above-mentioned prior art, provides a kind of face frictional resistance big, the coarse-surface geomembrane of good antiskid effect.

Another purpose of utility model is to provide a kind of two films overlap joint convenient, and overlaps firm coarse-surface geomembrane.

Utility model first purpose realizes that main the improvement is to adopt the calendering film forming, and forms protruding nail with cylinder in the face roll extrusion in the calendering, thereby makes coarse-surface geomembrane, thereby overcomes the deficiencies in the prior art, realizes the utility model purpose.Specifically, the utility model coarse-surface geomembrane comprises that plastics make thick 0.8-2.5mm geomembrane, and wherein at least one face is crude, it is characterized in that said crude is protruding nail exasperate.

The said protruding nail exasperate of utility model is to take root in the exasperate film that numerous protruding nails form on the film surface, and the protruding nail shape of exasperate is not limit, and can design for example cylindrical, conical, polygon cylindricality, polygon taper or the like arbitrarily; Protruding nail arrangement mode and density require to determine according to friction; For making film that enough frictional resistance be arranged, protruding staple height is preferably 0.4-0.7mm.

Utility model second purpose realizes, it is characterized in that film width both sides leave the light face of 15-30cm, promptly do not have protruding nail face, with convenient two film leakproofs overlap joint.

The utility model coarse-surface geomembrane, adopt and rollingly form protruding nail on film surface and add rough, it is protruding nail exasperate, because protruding staple height is higher relatively, lay back frictional resistance and strengthen, non-skid property is good, and non-skid property is better than existing spray silk greatly and adds rough and chemical blowing adds rough geomembrane, in particular for refuse landfill, when dumping rubbish, also can not cause the slippage of film.Roll the stamped nail film forming, not only can obtain big wide cut geomembrane, film is the wideest can to reach 7M, has reduced lap weld, has saved material and man-hour, and construction speed is fast; And the gained thickness is evenly thin, has significantly improved the overlap joint welding quality, the overlapping the slot antileaking.Besides, two of film width leave the no protruding nail overlap joint plain edge of certain width, and having reduced exasperate film overlap joint at first needs the millwork amount, and polishing is to the infringement of film.

Below in conjunction with two specific embodiment, further specify utility model.

Description of drawings

Fig. 1 is the utility model first embodiment geomembrane schematic cross-section.

Fig. 2 is the utility model second embodiment geomembrane schematic top plan view.

The specific embodiment

Embodiment 1: referring to Fig. 1, utility model coarse-surface geomembrane 1 is rolled into a width of cloth 7M by the HDPE material through exasperate roller and plain roller, thick 1-2mm geomembrane, and wherein one side is arranged with the conical protruding nail 2 of high 0.5mm.

Embodiment 2: referring to Fig. 2, as embodiment 1, the vertical both sides of film (width both sides) respectively have the no protruding nail overlap joint plain edge 3 of 20cm.

In addition, utility model can also be made the two-sided exasperate film that protruding nail is arranged, and adopts other forms of protruding nail.

Claims

1. coarse-surface geomembrane comprises that plastics make thick 0.8-2.5mm geomembrane, and wherein at least one face is crude, it is characterized in that said crude is protruding nail exasperate.

2. according to the described coarse-surface geomembrane of claim 1, it is characterized in that the high 0.4-0.7mm of protruding nail.

3. according to claim 1 or 2 described coarse-surface geomembranes, it is characterized in that the wide 6.5-7.0m of film.

4. according to claim 1 or 2 described coarse-surface geomembranes, it is characterized in that the vertical both sides of film have or not protruding nail overlap joint plain edge.

5. according to the described coarse-surface geomembrane of claim 3, it is characterized in that the vertical both sides of film have or not protruding nail overlap joint plain edge.

6. according to the described coarse-surface geomembrane of claim 4, it is characterized in that the wide 15-30cm of plain edge.

7. according to the described coarse-surface geomembrane of claim 5, it is characterized in that the wide 15-30cm of plain edge.