CN1205269A - Polymeric integral net - Google Patents

Abstract

The present invention provides an integral net having a lattice of polymeric material defined by holes traversing the integral net from one surface to the other. The present invention also provides a method for producing an embossed sheet of polymeric material by first contacting a billet of polymeric material with an embossing tool having a plurality of protrusions whereby the embossing tool impresses indentations into the billet to a given depth. Subsequently, the method involves skiving the embossed billet. By this method, an embossed sheet of the polymeric material is removed from the billet, which embossed sheet can be an integral net.

Description

The integral net of polymer

The present invention relates to a kind of integral net and manufacture method thereof of polymeric material.

Polymeric web or fabric are the sheet network structures that contains polymeric material.Polymeric web is acquired medical treatment and nursing from electronics various different purposes, and this net also is industrial important materials.These nets have the different characteristic of the engineering mode that depends on them.For example, this net can be made by various polymer, and it has the hole and the shape of all size, and can be almost any desirable thickness.

In many purposes, damaged or influenced material and contacting of net for fear of grid complete and wished that net made by the material of inertia relatively.Polymer preferably is used to employed net in these purposes, because many polymer poles can be resisted most chemicals.In fact one of material of the inertia of some chemicals that is listed in of the fluoropolymer resemble the polytetrafluoroethylene (PTFE).Like this, the net of fluoropolymer resembles battery to the purposes that net is exposed under the coarse condition, filter, and very useful in the similar device.

Wish that in other purposes the net make contains the extracted material of minimum number, because such material can the impact polymer grid and the physics of net and chemical property and pollute and net the material that contacts.The net that contains the extractible material that can react is changed or when degrading above a period of time, extractible material will be removed from net.Perhaps more importantly, in other purposes, be used as in the filter of filter media or carrier element as net wherein, the existence of extractible material has adverse influence to the fundamental character of filtrate in grid.Obviously, extractible material can fall from grid in leaching, like this material that will pollute filtrate and/or be filtered.

People are also normal to be wished to occur polymeric web as thin as a wafer and has very little, the hole of regular shape or the net in hole.This net is used for filter, particularly in the ultrafiltration apparatus, to remove very little particle (as, microorganism) from fluid.In addition, extremely thin net makes in the pressure differential of filter process middle filtrator both sides and reduces to minimum, will strengthen like this filtration of some type efficient (as, dynamically or the filtration of cross flow one).

Typically, the polymeric web of many types is by extruding, and braiding is knitting, or punching or polymeric material thinly sliced make.With the size in the mesh of these method manufacturings or hole and shape control all is unusual difficulty and expensive, especially under the situation that is very little and uniform hole of requirement and extremely thin net.And, the methods of many manufacturing nets that generally use, especially extruding, be easy to a large amount of extractible materials (as, metal, resin etc.) introduce in the polymer grid.

Therefore, people need not have the net and size with hole and the basic extremely thin net uniformly of shape of extractible material substantially.The invention provides a kind of like this polymeric web and its method of preparation.These advantages of the present invention and other advantage, and other inventive features will be seen from the specification of the present invention that provides here very significantly.

The invention provides a kind of integral net, cross this net by Kong Congyi surface and limit this net to another surface with polymeric material grid.It is a kind of by the contact method of the protruding kickboard of producing polymeric material of the polymeric material block molding tool protruding with having many drums that the present invention also provides, rely on this molding tool that the sawtooth body is pressed into block to the predetermined degree of depth, the block with relief is whittled into plate then.By this method, the relief plate of polymeric material is taken off the top said integral net of relief plate from block.

The present invention is used for using the purposes of net or fiber, as Medical Devices or product, and gas exchange or oxygen generator device, electronic equipment, in the separate use, or other allows to use in the purposes of polymeric web or fiber.

Can more clearly the present invention by describing in detail with following optimal technical scheme with reference to the accompanying drawings.

Figure 1A-1C represents the schematic diagram on the surface of polyalcohol integral net of the present invention.Figure 1B is illustrated in the hole of a kind of integral net of describing among Fig. 1 and the enlarged diagram of grid, and Fig. 1 C represents the hole of integral net of another kind of type and the similar enlarged diagram of grid.

Fig. 2 represents a kind of cylindrical block of polymeric material and has the pointed molding tool of rotary shuttle to reach the schematic diagram of cutting down the blade of protruding kickboard from block.

Fig. 3 A-3G represents the schematic diagram of various types of polymerization blocks and molding tool.Fig. 3 A represents polymeric material cylindrical block and the pointed molding tool of rotary shuttle and the side view by the formed impression in molding tool pressed-in block surface.Fig. 3 B represents the cylindrical block and the sheath pattern press tool schematic diagram of polymeric material.Fig. 3 C is a upward view of describing a kind of cylindrical block of the polymeric material in sheath pattern press tool.Fig. 3 D represents the plane block of polymeric material and the schematic diagram of compact type molding tool.Fig. 3 E is the polymeric material plane block described of presentation graphs 3D and the side cross-sectional view of compact type molding tool.Fig. 3 F is the recessed schematic side view of the hollow block and the rotation spur pattern press tool of expression polymeric material.Fig. 3 G is the plane block of expression polymeric material and the schematic diagram of rotation spur pattern press tool.

Fig. 4 A-4B represents the relief block of polymeric material, cuts the blade and the side-looking sketch with relief plate of embossed pattern of the flange of floating downward from block.Fig. 4 A represents to have by molding tool pressed-in block surface and forms, and cuts the blade of the flange of floating downward and has the cylindrical block relief plate side-looking sketch of polymeric material of the impression of emboss graphics from block.Fig. 4 B represents to have the plane block by the polymeric material of the formed impression in molding tool pressed-in block surface, cuts the blade and the schematic diagram with relief plate of relief pattern of the flange of floating downward from block.

Fig. 5 A and Fig. 5 B represent the schematic diagram of the protruding different technologies scheme of the upper conical drum of molding tool.Fig. 5 A represents that the pyramid drum is protruding, and Fig. 5 B represents that conical drum is protruding.

Fig. 6 represents to comprise the schematic cross-section of a part of the block of block surface, and it demonstrates by having the oblique one-tenth interlocking shape part that the protruding molding tool of taper drum forms.Dotted line A, B and C represent to be used for to cut three planes on a plurality of available planes of relief block.

Fig. 7 represent relief plate or integral net schematic surface it demonstrate and between adjacent hole, have the grid of pressing hole or groove.

The invention provides a kind of the non-woven of the polymeric material grid that limits by hole or hole that have, non-extruding, whole netted net (as the individual layer net).Employed here net be any have from a surface pass across the reticular lamina of plate to another surperficial hole.Preferably, for make the extractible material that is present in the grid (as, metal, resin and analog thereof) minimize, integral net preferably is non-extruding.Simultaneously, this net also preferably is not tightened up, because tension can cause the change of trellis.

This net can by any suitable polymers material (as, unworn, reprocessed, recovery, or the like) constitute.Integral net preferably includes polymeric material, and as thermoplastic polymer etc., polymeric web can contain packing material, (as, glass filler, carbon filler, mineral filler, or other appropriate filler).In many purposes, but integral net comprise and demonstrate higher chemical-resistance and the polymeric material of cutting performance, for example, fluoropolymer, the polyethylene of polytetrafluoroethylene (PTFE) and super high molecular weight (UHMWPE).The example of suitable fluoropolymer has polytrifluorochloroethylene (PCTFE), polytrifluorochloroethylene-altogether-ethene (E/CTFE-polymer), polytetrafluoroethylene (PTFE)-altogether-hexafluoropropene (FEP), polytetrafluoroethylene (PTFE)-be total to (CO)-perfluor (alkyl vinyl ether) (PFA), polytetrafluoroethylene (PTFE)-altogether-ethene (E/TFE), polyvinyl fluoride (PVF), Kynoar (PVDF) and inferior ethene fluo-copolymer.Most preferred polymer is PTFE, PFA and UHMWPE.In addition, no matter the character of polymer how, integral net of the present invention does not preferably have pollutant (for example extractible material) basically, as containing the integral net of polymeric material in fact.For example, this net can contain and be less than about 500/1,000, the extractable matter of 000 (ppm), for example be less than about 100ppm or even the extractable matter (for example, being less than the extractible material of 10ppm) of 50ppm, for example be less than the extractible material of 1ppm, this net more preferably contains and is less than (ppb) 10 metal extractable matter (for example, the metal extractable matter of about 1ppb) of branch of about trillion (or 1,000,000,000).Integral net of the present invention most preferably contains whole desirable polymer.Therefore, in fact the preferred integral net of the present invention can be chemically inert, so as the globality of integral grid and very strong industrial solvent maintenance structure in contact for a long time and wherein do not have basically material from integral net, be immersed in the integral net fluid in contact in.Yet, in other purposes (for example as the medicine product, the biodegradation package, or the like), the preferred active material of polymeric material.

Polyalcohol integral net of the present invention can be by any suitable manner manufacturing.This integral net can be hydrophilic or hydrophobic; This integral net can have smooth or coarse surface; This integral net can apply or conjugation (for example, surface-coated) with other material.

Integral net of the present invention can be virtually any size or form, yet available integral net is netted laminated structure.Therefore, this integral net can be any desirable size, and for example width or length can be several meters or only several centimetres, even littler significantly or bigger.In addition, this integral net can be Any shape; For example, it can be rectangle, square, and circle, ovum, prolate shape, polygon, irregular, or any other desirable shape.

When integral net of the present invention can be any suitable dimensions, it was a laminated structure.Integral net and its length and width are preferably very thin by comparison; And integral grid can have any desirable thickness.For example, grid can be several micron thickness, although thicker grid can be one or several millimeter, even thicker (for example, one or several cm thick).Therefore, about 1000 μ m of desirable grid or be less than 1000 μ m thick (as, about 1-750 μ m), preferred about 500 μ m or still less (as, about 10-500 μ m), more preferably from about 250 μ m or still less (as, about 50-250 μ m), most preferably from about 200 μ m or still less (as, about 100-200 μ m).Certainly, the comparable size that exemplifies of grid is thick significantly or thin.Yet, that the thickness of grid changes or uniformly (as, some positions are thick than other positions), different grid thickness or be gradient or be irregular.Yet the thickness of grid is preferably uniformly approximate on the whole, and most preferably the thickness of grid is uniform basically.

The present invention includes and have Any shape, the integral net of size and thickness (integral net that is provided is a sheet), integral net of the present invention is netted.Therefore, integral net of the present invention has and passes one or more hole or the hole of its thickness to another surface from a surface.Integral net of the present invention has the hole of any suitable quantity, but this integral net must have at least one such hole.Integral net preferably has the hole that a row passes its thickness, and this arrangement can be regular or irregular.In addition, this hole can be virtually any size or size.It is wide that for example the hole can be several approximately micron, or bigger, for example several mm wides, or bigger (for example, about one centimetre or bigger).In addition, this integral net can have the very wide hole of a large amount of pore size distribution.In addition, the big I of whole mesh of the present invention is approximate the same.The accurate dimension of integral net mesopore can change according to the concrete use of integral net in the present invention.For example, integral net (for example, several microns wide) with very little hole can be that separating particular matter provides good filter from fluid, and than macropore (for example has, it is wide to be less than 1000 μ m, and particularly 500-800 μ m is wide) integral net can be provided for the excellent carrier of filter.Preferred integral net has shape and is arranged in the uniform pyramid of being similar to of regular pattern hole.It is the same with going so that center on the edge of the width in each hole basically that this pattern preferred arrangement becomes row.The example of this arrangement is a kind of pattern with prismatic opening, and it is shown among Fig. 7.

Integral net of the present invention schematically is depicted among Figure 1A-1C.Rely on hole 11, the polymer grid 13 of integral net 12 forms network structure.Therefore, integral net 12 preferably includes polymer grid 13, limits its structure by passing integral net 12 from a surface to another surperficial hole 11.Polymer grid 13 can regularly arranged (Figure 1B) or irregular alignment (Fig. 1 C), and its position by hole 11 is determined.Also have, polymer grid 13 can account for a greater part of or a small half of of integral net area, and this depends on the size in hole 11.

Except having hole and polymer grid, integral net also has other part.Therefore, integral net can be carried out surface treatment (for example, by giving the coating integral net surface hydrophilic or hydrophobic) or be made surface undulation (for example, in order to promote hydrodynamics).For example, according to the description of Fig. 7, can have pore shape depression 74 in its surface (or even two facing surfaces) the lining integral net 71 of grid 72.Depression 74 can form ditch or groove between adjacent hole 73.Yet for other purposes, the surface of net is preferably smooth.Certainly, be used for various uses (for example, improve the integrated carrying amount, apply at one deck or two layers of surface with adhesive, stretch etc.) in order to help them, integral net can have more any other supplementary features.

Integral net of the present invention can be used for many permissions and uses in the purposes of polymeric web or fiber, (for example resemble Medical Devices or product, dressing or suture material), gas exchange or oxygen generator device, electronic equipment (for example, being used for the insulation of battery), separate use is (for example, filter or the carrier in filter), or in other the purposes.The invention provides a kind of filter with integral net of the present invention.This filter comprises a case, the processing fluid intake that fluid is directly handled in case, the directly infiltration of an infiltration processing outlet from case, the resolution element that at least one is placed in case and contains integral net of the present invention, its surface (as, upstream surface) with the processing fluid communication, its another surface communicates with permeant outlet.The present invention also provides the method for this separator of a kind of use separate substance (as particulate matter) from handle fluid.

Integral net can be made by some suitable methods, the invention provides the method for optimizing of this net of a kind of manufacturing and other relief plate of manufacturing (for example, imperforate plate).According to the inventive method, schematically in the depiction 2, relief plate 26 is by forming on the block 21.This method preferably use molding tool 22 (preferably having bulging convex portion 23) so that on block 21, form one or more sunk surfaces 24 and be used for cutting (that is, tangentially stripping and slicing body 21) thus make the blade 25 of relief plate 26.

According to the description of Fig. 4 A-B, the plate 42 of the embossed pattern of polymeric material is taken off from block 41 by this method, and relief plate 42 has two surperficial 49a, 49b and embossed pattern 44.

Comprising the claim that is additional to this, is block at this used block, ingot shape, or other agglomerate that is suitable for relief and cuts subsequently, and its shape or composition needn't be concerned about.Block can form by any way, for example, by molded or other can form the desirable method of polymer block.Most preferably, block forms by the method that the extractible material that makes existence minimizes or removes in large quantities.Therefore, the preferred block that is used for the inventive method is pure basically desirable polymeric material agglomerate, be made up of desirable polymer basically as this block, even block all is made up of desirable polymer.For example, block can contain and be less than about 500/1,000, the extractible material of 000 (ppm), as be less than about 100ppm or even the extractible material (for example, being less than the extractible material of about 10ppm) of 50ppm, as be less than the extractible material of 1ppm, more preferably block contains and is less than about trillion (or 1,000,000,000) and divides the metal extractable matter of it (ppb) 10 (the metal extractable matter that for example, is less than about 1ppb).Certainly, the accurate means that form block will depend on the character of polymeric material widely, and this means are known by the people in the art.Block can contain any suitable polymers material (as, unworn, reprocessed, recovery, or the like), such as described those materials elsewhere.Preferred polymeric material can promptly be cut, and these polymeric materials also need can sufficiently be out of shape so that can guarantee the polymeric material block and can come relief with suitable device.The most more preferably, block is by PTFE basically, PFA, or UHMWPE forms.

The polymeric material block composition that is used for the inventive method can have any suitable shape and size.For example, as the description of Fig. 2, block 21 is columniform.Block 21 solid or depression so that be fixed on the axle 27.In other embodiments, block 31 is hollow (Fig. 3 F) or (Fig. 3 D-3E) on plane.In addition, block can have any other desirable surface characteristic (that is, contoured, recessed, protruding, or the like).Moreover the block on plane can have any desirable shape.For example, the surface of the block on plane can be square, the garden, avette, prolate, polygon, or the like, even irregular.

According to the description of Fig. 3 A-3G, the inventive method comprises that at first relief block 31 is so that import to pocket portion 34 the interior certain degree of depth in surface of block 31.The method of any relief block 31 is all in the scope of the inventive method.Therefore, block 31 can have the pocket portion 34 (that is, making block 31 areal deformations) that forms in the block 31 by individually pocket portion 34 being pressed into, and for example uses a drift, one or more relief instruments, or other suitable device or device.In addition, pocket portion 34 can form by taking off material from block 31, (for example with drill bit or other device, by optical etching, by chemical etching, or by other suitable processing).Preferably, block 31 carries out relief by using relief (mold pressing) instrument 33.

The molding tool 33 that is used for the inventive method can be the instrument that is suitable for pocket portion 34 is pressed into any kind in the block.The type of molding tool depends on many parameters, as the surface profile of block 31, and the type of polymer, and the desirable performance of polymer relief panel products.An example of suitable molding tool 33 is a punch die with many bulging convex portions 32 (as, metal die).According to Fig. 3 A, the description of 3F and 3G, some molding tools 33 that are used for the inventive method are rotation spur type knurling tools 33, thus it pivots and drives continuous bulging convex portion 32 and contact with the surface of block 31.According to the description of Fig. 3 B-3C, the molding tool 33 of another kind of type is the sheath pattern press tool 33 that radially rouses convex portion 32 that has to internal protrusion.According to the description of Fig. 3 D and 3E, another molding tool 33 is the compact type molding tools 33 that have from the bulging convex portion 32 of a rat.Except described molding tool, stamper's prodigiosin of other type is used among the inventive method.

Relief can be finished by any suitable technique, and selectable relief technology decides by the character of block 31 and molding tool 33 to a great extent.For example, block can come mold pressing along the tangential direction of block 31 by the surface of block 31 (Fig. 3 A and 3G) by the spur shape molding tool 33 that makes rotation.In addition, block 31 can be by in the sheath pattern press tool 33 that block 31 is packed into (Fig. 3 B-3C), contact with compact type molding tool 33 (Fig. 3 D-3E) by block 31,, or come relief by other suitable manner by the inner surface (Fig. 3 F) of relief hollow block.Description according to Fig. 3 A, cylindrical block 31 is pivoted (representing this direction by arrow a) at its spur shape molding tool 33 with respect to rotation, and molding tool 33 in the other direction (representing this direction) by arrow b when pivoting by relief effectively.Needn't be concerned about the relief technology, yet, the process of the surface relief of block 31 that pocket portion 34 is packed into is done a description at this.

Molding tool 33 preferably has the bulging convex portion 32 that contacts with block 31.Drum convex portion 32 can form any desirable arrangement (for example, pattern or irregular arrangement) on molding tool 33.The drum convex portion 32 can be divided into the rule with irregular, the drum convex portion 32 arrangement can be any desirable density (for example, be about 1/cm2-500/cm2, typically be about 10/cm2-100/cm2).When molding tool 33 was the pointed molding tool 33 of rotary shuttle, drum protruding 32 can form along the arrangement of the irregular or straight line on molding tool 32 length directions; In addition, rouse the helical pattern that convex portion 32 can form any desired angle (about 5 °-75 ° of helical angle, 15 °-60 ° according to appointment, typical even about 30 °-45 °).For example, description according to Fig. 7, the spur shape molding tool of rotation is in order to form a relief plate of pattern with band diamond opening, it has the bulging convex portion of arranging with about 45 ° helical angle, wherein reverse side one side at (that is the angle θ that, represents in Fig. 5 A is about 45 °) drum convex portion has about 90 ° angle that includes.By changing the position of bulging convex portion 32, the inventive method can be produced the protruding kickboard of different performance.

For pocket portion 34 is pressed in the block 31, drum protruding 32 can be any suitable dimensions.The impression of polymer sheet or the size in hole are relevant with the width (with rousing the degree of depth that convex portion penetrates) of protruding 32 parts of molding tool drum, and the accurate dimension of drum convex portion 32 will change according to the desirable performance of polymer relief panel products.Therefore, in order to produce the relief plate with very little impression or hole (for example, the polyalcohol integral net is used for fine filtering), drum convex portion 32 can have the Breadth Maximum that penetration is less than about 20 μ m; For example, the breadth of penetration that rouses convex portion 32 can be less than about 10 μ m (for example, being less than about 5 μ m).In the scope of the inventive method, can use and have even the protruding kickboard of polymer (as having the integral net in very little hole or hole) that more molding tool 33 of side drum convex portion 32 is produced less impression.Similarly, in order to produce protruding kickboard or integral net, this relatively little size of the ratio that molding tool 33 should have big (that is it is wide or bigger that, breadth of penetration is about 20 μ m) drum convex portion 32 with big impression or hole.For example, in many purposes, drum convex portion 32 breadth of penetrations can reach about 1 mm wide.Should be understood that bulging convex portion 32 even can obviously be wider than cited size that this depends on the desirable performance of polymer relief plate.

The limitation in height of drum convex portion 32 pocket portion 34 go deep into depth capacity in the block 31; Therefore, long bulging convex portion 32 can be protruding in darker pocket portion 34 than short drum is protruding.Certainly, rouse convex portion 32 and length all must not embedded (that is, the bulging convex portion 32 of length still can be protruding in the pocket portion 34 that is rather narrow) in the block 31.Like this, can be any suitable height in order to make the pocket portion 34 drum convex portions 32 of wishing thickness.This depends on the thickness that relief block 31 is cut, and darker pocket portion 34 allows to make which floor polymer relief plate from the block 31 that relief is only crossed once.In addition, when desirable relief plate is integral net, allow to cut into thicker net than deep recess part 34.Therefore, in many purposes, in order to make product as much as possible from only easily taking off on the relief block 31 once, drum convex portion 32 should be higher relatively.On the contrary, (for example, come relief with the pocket portion 34 of different pattern then in order to save block 31) in other purposes, drum convex portion 32 should be shorter, and in many purposes, drum convex portion 32 is too short so that only penetrate slightly in the block relief 31.Yet, can have the bulging convex portion 32 of alterable height for pocket portion 34 molding tools 33 of in block 31, making different depth.

Drum convex portion 32 can be any desirable cross section shape; Therefore, drum convex portion 32 can be square (for example, like prismatic, rectangle, prismatic, or the like), garden shape, ovoid, prolate shape, rectangle, star, or other any suitable shape.In addition, molding tool 33 can have equiform or difform bulging convex portion 32.And, can change its shape (for example, the bottom is circular for the square top, or other suitable configuration) along its length in order to make difform pocket portion 34 drum convex portions 32.Therefore, only the block 31 crossed once of relief can be cut continuously to make the relief plate of different performance.In addition, drum convex portion 32 then cuts so that make silk (for example, fiber) can extrude groove shape depression in block after, rather than has the integral net of grid.

Drum convex portion 32 can be any desirable shape, preferred taper.Signal according to Fig. 5 A-5B is described, and taper drum convex portion 52 is pyramid (Fig. 5 A) or conical (Fig. 5 B).In order to form the pattern of the described band diamond opening of Fig. 7, more preferably rousing convex portion 52 is pyramids.From drum convex portion bottom, the awl point can be outside, or preferred inside and tapering can be angle θ arbitrarily, as, be less than about 90 ° (that is, comprise be less than about 180 ° angle), as be less than 60 ° (promptly, comprise and be less than 120 ° angle), as be less than about 45 ° (that is, comprise be less than about 90 ° angle), be less than about 30 ° (promptly, comprise and be less than about 60 ° angle), or even less than 15 ° (that is, comprise be less than about 30 ° angle).In fact, the bulging convex portion 52 of taper can form the pin with very little tapering, and for example, θ is less than about 5 ° (that is, comprising being less than 10 ° angle), even must not be tapering.Yet the bulging convex portion 52 preferred taperings on the molding tool 51 are uniformly, more preferably its outstanding position have 90 ° include angle (that is, inner taper angle θ is about 45 °).Can find Fig. 5 A, the bulging convex portion 52 among the 5B and 6 is tapers, and the pocket portion 62 that produces by drum convex portion 52 is staggered arrangement.

Because the drum convex portion needn't embed in the block on maximum length ground in the relief process, preferably has the molding tool of pyramid-shaped drum convex portion, because it can provide bigger control range to resulting relief plate.For example, by setting the degree of depth that bulging convex portion embeds, the size of pocket portion just can be controlled.Therefore, go into the pocket portion that the bigger degree of depth is come the relief broad by rousing tuck pointing.

According to the description of Fig. 4 A-4B, after the relief, the inventive method comprises the block 41 that cuts relief, preferably cuts the block 41 that embedded with blade 45.Any way of cutting block 41 is all within the scope of the inventive method.Therefore, thus can make blade 45 tangentially cut block 41 to the surface of block 41 by block 41.Yet relief block 41 can move more reposefully relative to static blade 45 and cut the method for preferred this cutting block by it.According to the description of Fig. 4 A, when its engagement pivot fixing blade 45 when (a represents with arrow) the cylindrical block physical efficiency be cut the most reposefully.Similarly, according to the description of Fig. 4 B, moving forward static blade (b represents with the arrow) block 41 of engagement by it can be cut the most reposefully.

With respect to the degree of depth of impression pocket portion 43, can be with any degree of depth cutting block 41.In many purposes, the thickness that block 41 is cut is than the thin thickness of impression pocket portion 43.Find out thus the relief plate of taking off from block 41 by cutting 42 be a kind of integral net (promptly, a kind of porose plate), because relief plate 42 has kept the shape of pocket portion 43,44, and the relief block 41 of pocket portion 43,44 by in advance is imported in the block 41.In other purposes, block part 41 is cut thicklyer than impression pocket portion 43, not perforation but it is thinner than the grid between the pocket portion 43,44 in the position of impression pocket portion 43,44 of the relief plate of generation 42.If desired, this relief plate can bore a hole by processing subsequently (for example, drawing crack is in the thin part of impression pocket area).

Cutting can be finished by any suitable technique, in the selection of cutting technology is controlled in a big way according to the character of the block 41 of relief.For example, according to the description of Fig. 6, after a relief, in order to make the have different hole dimensions integral net of (line A and B) or not perforated relief plate (line C), the block 61 with pocket portion 62 can be cut several times, for example with continuous degree of depth cutting (for example, dotted line A, B and C).Simultaneously, according to the description of Fig. 4 A, in order to be cut spirality (for example, a kind of concentric spirality) by the independent relief plate 42 of block manufacturing, relief cylindrical block 41 once.In addition, according to the description of Fig. 2, the cylindrical block 21 spur shape molding tool 22 by rotation can be by relief continuously, and is cut when it pivots (a represents with arrow) with respect to blade 25 when.Because from block 21, cut spirally relief plate 26 when layer block diameter reducing, in order to keep desirable cutting depth, blade 25 is with respect to block 21 indexing constantly, or block 21 is with respect to blade 25 indexing constantly.In addition, evenly clear for the relief flaggy pattern that keeps cutting down, molding tool 22 is with respect to block 21 indexing continuously, or block 21 is with respect to molding tool 22 indexing continuously.Therefore, can make the uniform basically continuous integral net of the size of portalling by the cylindrical block 21 of polymeric material.

Mention at this, the inventive method preferably uses conical die press tool drum protuberance to assign to make the zigzag pocket portion be pressed in the block.Description according to Fig. 6, the degree of depth (dotted line A and B) of the relief block 61 of cutting has the hole of different size or the integral net in hole can be formed by the block 61 of the relief with jagged pocket portion by changing subsequently, for example, the relief block 61 (the line A among Fig. 6) that has a zigzag pocket portion 62 with the cutting of the narrower degree of depth is made the hole with broad or the integral net of hole and narrower grid, and makes the integral net of the grid with relative hole or hole and broad with darker horizontal resection block 61 (the line B among Fig. 6).Therefore, according to the inventive method, each hole size is different but have several integral net of separating that same shape and hole or hole have same interval and can be produced by the relief block 61 of the pocket portion 62 with interlocking by cutting block 61 repeatedly with the continuous degree of depth (line A and B) greatly.With the degree of depth cutting block 61 (Fig. 6 center line C) that is deeper than pocket portion 62 thus make not perforated plate.Block is cut serially, and the size in the hole of the pantostrat that cuts from the block with zigzag pocket portion is inevitable narrower.Therefore, if hole dimension uniformity between continuous layer is desirable, so, and continuously just must be before the cutting at each to the block that has pattern relief again, perhaps the bulging convex portion of molding tool is not taper.

By the technology of control relief and cutting block, just can produce the relief plate of the grid of described any suitable thickness before having.For example, control relief technology can influence the thickness of grid.By the protruding projection that makes the block materials deformation energy cause block surface of drum, the cumulative volume of block does not have great change in the relief process.Therefore, change the size of molding tool drum convex portion and the degree of depth of relief and can influence the degree that block is expanded by the relief step.In addition, by the control Cutting Process, the inventive method can produce grid thickness difference or the identical relief plate of grid thickness.The cutting of different-thickness can produce some position relief panel thicker than other position, and is this variation or gradient or irregular.Moreover the shape of blade (for example, zigzag, or other shape heterogeneous) can influence the thickness of relief plate or grid.Certainly, by the control Cutting Process, the inventive method can produce has the approximately uniform relief panel of thickness on the whole, even has the grid that is essentially same thickness.

Except at first relief with subsequently the above-mentioned step to the cutting of polymer block, the inventive method also comprises other step.For example, the inventive method comprises with the block preliminary treatment of suitable manner to polymeric material.Desirable pretreated character depends on the composition of polymer to a great extent, and therefore such preliminary treatment is within state of the art scope.For example, be easier to form pocket portion, before relief, or heat block in the relief process in order in the relief process, to make polymeric material, or its any part.For example, block is being heated to even temperature before the relief in stove.In addition, molding tool can comprise a heating element heater that is used for the heat block surface in the relief process.The heated temperature of block depends on polymer.For thermoplastic polymer, block surface is heated to and approaches glass transformation temperature.The PTFE block preferably is heated to greater than room temperature (promptly greater than 25 ℃) but is not more than 185 ℃ temperature, the temperature of more preferably about 135 ℃-165 ℃ (for example, about 150 ℃).Similarly, the block surface that contains UHMWPE preferably is heated to above room temperature but is not more than about 60 ℃ temperature, (for example be more preferably 50 ℃-60 ℃, about 55 ℃) temperature, the block surface that contains PFA preferably is heated to above room temperature but is not more than about 185 ℃ temperature, the temperature of more preferably about 135 ℃-165 ℃ (for example, about 150 ℃).

The relief plate of the polymeric material that cuts down from the relief block can be modified.The character of desired modification will depend on the composition of polymer to a great extent and the relief plate will further be used.This modification is within state of the art scope.Therefore, for example, one or two surface of relief plate can be glossed, heat treatment, and annealing applies, or the like.In addition, after cutting, can be stretched, its objective is, make their bore a hole (that is integral net) thus in order to make the thin partial rupture at the pocket area place that subsides by relief plate with the degree of depth cutting block manufacturing of the degree of depth that surpasses pocket portion.Certainly, the relief plate of polymeric material can come modification by any other suitable manner.

In some purposes, the inventive method also comprise make integral net and second relief means (or even two or more relief means, blade, the edge profile of tooth, or the like) contact.Therefore, according to the description of Fig. 7, punching impression 74 or groove 74 are pressed in the surface of relief panel 72 between some adjacent holes or pocket portion 73.Groove 74 or impression 74 need not be between each adjacent holes.In some purposes, wish that in order between some adjacent holes or pocket portion 73, to form the crack groove 74 passes grid 72 and breaks.

Discussion has herein been pointed out block by the mode of relief, and the inventive method must not used the first relief step.In some purposes, for example, the block of polymeric material has comprised the pocket portion of suitable array, pocket portion as the described herein.Certainly, this block that is used for the inventive method must be more further relief.Therefore, in such technical scheme, the invention provides and a kind ofly make the method for relief plate by the polymeric material of relief (that is the surperficial block that, has the pocket portion on one or more surfaces that are deep into block) block by cutting relief block described herein.

This method can produce does not have extractable matter polymer relief plate substantially.This may be because known the generation or the operation of the extractable matter that importing is relevant with the relief plate do not used in the manufacturing of relief plate.Although block described here contacts with molding tool and cutting blade, such being operated to manyly is incorporated into the surface of relief plate with pollutant, and this material does not harden with relief and closes.Next, thus the relief plate that cut in suitable fluid, bathed wash or clean remove any from the lip-deep trace material of relief plate drift.

All comprise patent at this reference substance of quoting as proof, and patent application, and publication are hereby incorporated by its full content.

Describe the present invention by highlighting optimized technical scheme, obviously those of ordinary skill in the art can make improvements optimized technical scheme, and this means that the present invention can ad hoc fashion described herein mode in addition implement.Therefore, the present invention includes and drop on the present invention essence that limits by following claims and all improvement in the scope.

Claims (20)

1. the individual layer integral net of a non-non-extruding of knitting, it comprises that a polymeric material grid with two apparent surfaces and at least one pass across this net to another surperficial hole from a surface.

2. the net of claim 1, wherein said polymeric material is a thermoplastic.

3. the net of claim 2, wherein said thermoplastic is a fluoropolymer.

4. the net of claim 1, wherein said polymeric material are polytetrafluoroethylene (PTFE)-altogether-perfluors (alkyl vinyl ether).

5. the net of claim 1, wherein said polymeric material is the polyethylene of super high molecular weight.

6. the net of claim 1, wherein said polymeric material is a polytetrafluoroethylene (PTFE).

7. the net of any one claim of claim 1-6, it is made up of said polymeric material basically.

8. the net of claim 1-6, wherein a loaf of bread of said grid is drawn together the punching impression that is absorbed in surface of said grid.

9. the net of claim 8, wherein impression forms a ditch between two adjacent holes of said net.

10. filter, it comprises a case, directly will handle fluid for one and import processing fluid intake in the said case, a permeant outlet that directly from said case, guides penetrant, with the arbitrary said net that is placed in the claim 1-6 in the said case, a surface and the said processing fluid issuing of net communicate, and another surface and the said permeant outlet of net communicate.

11. the method for a separating particular matter from handle fluid, it comprises the arbitrary said net that allows said processing fluid pass through claim 1-6.

12. the method by the relief block manufacturing relief plate of the polymeric material with the surface that contains one or more pocket portions, said method comprises the said block of cutting, takes off the relief plate that comprises grid from said block thus.

13. claim 12 method, wherein said polymeric material are polytetrafluoroethylene (PTFE)-common-perfluors (alkyl vinyl ether), the polyethylene of super high molecular weight, or polytetrafluoroethylene (PTFE).

14. claim 12 or 13 methods, wherein said block is made up of said polymeric material basically.

15. arbitrary method among the claim 12-14, the method also comprise the said relief plate of the said polymeric material of heat treatment.

16. arbitrary method among the claim 12-14, the method also comprise a surperficial possess hydrophilic property that makes said relief plate.

17. the arbitrary method among the claim 12-14, the method also comprise said relief plate is contacted with second molding tool, on a surface of said relief plate, stamp the punching impression thus.

18. the method for claim 17, wherein said punching impression are the grooves between two adjacent pocket portions of said relief plate.

19. the arbitrary method among the claim 12-14, wherein said pocket portion are to be pressed in the said surface of polymeric material by the one or more bulging convex portion with molding tool to form.

20. also being included in said block and said molding tool, the arbitrary method among the claim 12-14, this method heat said surface or said block before contacting.

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