CN1788130A - Drywall tape and joint - Google Patents
Drywall tape and joint Download PDFInfo
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- CN1788130A CN1788130A CNA038265796A CN03826579A CN1788130A CN 1788130 A CN1788130 A CN 1788130A CN A038265796 A CNA038265796 A CN A038265796A CN 03826579 A CN03826579 A CN 03826579A CN 1788130 A CN1788130 A CN 1788130A
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- Prior art keywords
- dry wall
- coating
- wall band
- joint compound
- band according
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F13/00—Coverings or linings, e.g. for walls or ceilings
- E04F13/02—Coverings or linings, e.g. for walls or ceilings of plastic materials hardening after applying, e.g. plaster
- E04F13/04—Bases for plaster
- E04F13/042—Joint tapes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0015—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using fibres of specified chemical or physical nature, e.g. natural silk
- D06N3/0022—Glass fibres
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F13/00—Coverings or linings, e.g. for walls or ceilings
- E04F13/02—Coverings or linings, e.g. for walls or ceilings of plastic materials hardening after applying, e.g. plaster
- E04F13/04—Bases for plaster
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2205/00—Condition, form or state of the materials
- D06N2205/02—Dispersion
- D06N2205/023—Emulsion, aqueous dispersion, latex
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Textile Engineering (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Adhesive Tapes (AREA)
- Laminated Bodies (AREA)
- Building Environments (AREA)
- Paints Or Removers (AREA)
Abstract
Drywall tapes, drywall joints and methods for their construction are provided by his invention. The drywall tape of this invention includes a web of glass fibers (10) and a coating (14) disposed over a portion of the glass fibers. The fibers (10) and a coating (14) disposed over a portion of the glass fibers: the coating includes a resinous binder which is at least partially soluble or dispersible in joint compound. The resinous binder is capable of formingan adhesive bon with the joint compound when set.
Description
Technical field
The dry wall connected system that the present invention relates generally to be used for seam or repair usefulness is especially for the belt of dry wall installation and reparation.
Background technology
In conventional art, the wall of making by gypsum wallboard or dry wall be by described sheet material is fixed to bolt or seam and with one be called " joint compound (joint compound) " special preparation the adhesive filling and apply described seam and build.This technology also is used to correction of the defect, as hole or depression, comprises those at electric box, pipe-line system and duct work, and because on every side the hole or the depression in the corner that intersection produces of dry wall plate.
The dry wall band is gained in strength and the level and smooth disguise at crack resistance and plain adapter and internal corners place.Tradition adopts dry wall band-a kind of simple kraft paper strip of two types, and it is attached to described drywall surfaces by a joint compound or " mud " base coating, and the glass fiber belt, and it can use or adhere to certainly with joint compound.The kraft belt must be placed carefully, and must be noted that mud is flow on the non-working surface.In addition, in case use described paper dry wall band, people must wait for the similar one day time before being coated with a final mix surface layer, so that described compound drying.On the other hand, the glass fiber belt provides special wet dry strength and stretch-proof and wrinkling.It can keep flat and tear-proof under load.
One joint treatment system, belt and joint compound that it comprises reinforcement must provide seam strong as gypsum plank itself.Otherwise, the crack appears on the seam that normal within the walls structure moves or the ceiling assembling can cause finishing.
The glass fiber petinet mesh belt of having found some kind when the joint compound with routine uses, the easier cracking of finishing than paper tape and conventional joint compound of seam.Therefore, some manufacturers as the U.S. Gypsum in Chicago, Illinois, have produced the glass fiber belt with transverse fiber structure, to provide than the stronger dry wall bonding strength of conventional glass fiber petinet mesh belt.These belts comprise Sheetrock board glass fiber dry wall band and Imperial board belt.Imperial board belt comprises a lax glass fiber tissue (100 orders per square inch), and it scribbles adhesive and be cut into roller and rolls width.Woven (leno) the long precursor of spirality and adhesive coating reduce edge loose yarn and wear debris and prevent that described lax fine rule from destroying refacing.
Also having another kind has been Fibatape glass belt at the dry wall band of commercial acceptance, can obtain from the technical fabrics company of Saint-Gobain of Ontario, Canada.This product is a kind of glass fiber belt that adheres to the SBR rubber coating of backing certainly that has.This belt covers the multilayer drywall compound then from adhering to a drywall joint.The sample of the drywall joint that will make of the Fibatape belt has carried out tension test by ASTM C474 (appendix), and its tests the intensity of appearance article one crackle of the one belt-blend sample that scribbles electrically-conducting paint.The mensuration of described intensity is till article one crackle position occurring in coating, it has been blocked along the electric continuity on described surface and has write down final tension load.The stretching sample of observing Fibatape joint belt is in the fracture of SBR rubber film place, joint compound described here unsuccessfully with divided thin film from.This shows that the typical tape in glass belt-dry wall system connects the intensity optimization that does not make glass-joint compound composite, because tension loading is tended to glass fiber is separated rather than transfers these loads to glass fiber self from joint compound matrix.
Therefore, be necessary to create the non-jointing compound of the more strength wall system of an employing glass fiber belt.This system should with mixed or powder joint compound compositions chemically compatible, and should not be in to impair in fact and use the existing advantage of glass fiber belt with respect to the kraft belt.
Summary of the invention
In first embodiment of the present invention, provide a kind of dry wall band dry wall band that is applicable to that joint compound repairs and seam cover.This dry wall band comprises a fiberglass gridding and a coating that places on the segment glass fiber.This coating comprises a resinous binder, and to be that part is solvable at least maybe can be scattered in the joint compound for it.This coating can also form an adhesive bond with joint compound when solidifying.
In a preferred embodiment, but joint compound and rewetting coating " moistening with solidify " are in the same place.But the rewetting coating can be chemically closely similar with the binding resin of forming compound itself, or solvable at least or be scattered in joint compound.Most preferably, but the rewetting coating be dissolved in or be scattered in the moisture of joint compound so that it is mobile on microcosmic with compound.In case dry, described coating most preferably becomes an adamantine thin layer, it is suitable for load is transferred on the fiber from joint compound very much.What this allowed joint compound and dry wall band of the present invention shows to such an extent that resemble very much a fully integrated compound, and it has strengthened the mechanical performance of seam.
The tension test of the seam of making according to the present invention discloses, and the load in first crack can increase similar 16% to 65% with respect to the Fibatape sample that the SBR that embeds identical joint compound compositions applies.Notice that all samples are coated with a contact adhesive in the one side.The test of the workshop outturn sample being carried out according to ASTM C474 (appendix) discloses rib fabric and is benefited at most from new coating, has improved 65%, next is braided fabric (40%), is plain cloth (16-28%) at last.When not having the belt of adhesive backing according to ASTM C474 test, the identical percentage increase of tension loading damage can ascribe the present invention to.But its result's size approximately is a times of belt with adhesive backing.It is interpreted as, and in the example of the sample that scribbles adhesive, half of glass grid surface area will be covered by one deck low modulus pressure sensitive, and it places the tension loading on the described sample inoperative to opposing.
Normal glass belt product is pulled out from joint compound and is destroyed owing to fiber, but and the present invention has the dry wall band of rewetting coating and shows it is owing to the interior laminate layer of joint compound own is damaged.Follow the load that causes that tension force damage increases, the joint compound interior laminate layer shows that the bonding between described coating and the compound improved, because the fiber in the sample is not drawn out.Dry wall band of the present invention also causes it approximately is the tensile strength result of the papery belt twice of testing before those, and conventional relatively glass belt such as Fibatape belt do not increase any basis weight or fiber to glass fabric.
In the further embodiment of the present invention, but the rewetting coating includes only a resin binder solubility or dispersible, or makes up with a sealing agent such as wax.One soluble binding agent provides secure bond with joint compound as the combination of polyvinyl acetate (PVAc) and wax, also reduces " obstruction " in the belt simultaneously.But preferred rewetting coating comprises the PVAc resin of easy suction.The absorption of steam can make the roll of tape of being made by the PVAc resin stop up or fuse together and make described roll of tape bonding.Described roll of tape also plasticity flows and makes the roll of tape distortion.Sealing agent as solid paraffin, makes the coating opposing steam based on PVAc.Have only when contacting, as using on the wall when belt and when applying joint compound, described PVAc resin is moistening again and fusible with liquid water.
In another embodiment of the present invention, provide a kind of method of preparation one drywall joint.This method comprises closely places a pair of dry wall plate mutually to form a seaming zone.Then, dry wall band of the present invention places on the described seam.This dry wall band comprises a fiberglass gridding, have placed on it can be when contacting with joint compound the moistening again and resin binder that solidifies.One first joint compound layer is coated onto on the described dry wall band, so that make described resin binder moistening again.But the drying of the re-wetted resinous binder on first joint compound layer and the belt forms adhesive bond then.
Description of drawings
Accompanying drawing is to the explanation according to the preferred embodiment of principle of the invention practical application, wherein:
Fig. 1 is part, the front elevation drawing of the preferred dry wall band of the present invention;
Fig. 2 is the lateral plan of part, amplification, the coating on the preferred dry wall band among diagram Fig. 1;
Fig. 3 is part, top, the viewgraph of cross-section of the smooth drywall joint of finishing of the present invention;
Fig. 4 is the diagram of the first crack average load that comprises the present invention's various dry wall bands structure.
The specific embodiment
The present invention mainly provides the dry wall band, and drywall joint prepares the method for drywall joint and is used for the stiffener of cement-based material.Be understandable that, although the present invention preferably relates to drywall joint or preparing structure, but described glass and the online rewetting coating of other reinforcing fibre provide the reinforcement plasterboard, gypsum wallboard, glass-faced gypsum boards, the ceramic tile support plate, the practical solution of high impact gypsum wallboard and concrete slab structure.But rewetting coating of the present invention can be used in cement-based material such as gypsum, portland cement and these materials and filler or the mixture that gathers materials, and as plaster, cement and concrete.The present invention can be used for improving existing from adhering to drywall joint adhesive tape and patch or not having the performance of the adhesive tape and the patch of pressure sensitive adhesive in a side of their structures.No matter on described grid, whether there is contact adhesive, but all reflect the benefit of a re-wetted resinous binder.Term " dry wall " comprises wallboard as used herein, fiberboard, glass-faced gypsum boards and their equivalent.Term " belt " meaning is a strip material as used herein, and it can the roll form provide, and contains or do not contain an adhesive backing layer.
With reference to the accompanying drawings, particularly Fig. 1-2 has wherein shown a preferred dry wall band 100, and it comprises a fiberglass gridding 10 and an optional pressure sensitive adhesive layer 12.Part when amplifying dry wall band 100 as shown in Figure 2, but can be observed rewetting coating 14.In the preferred embodiment of described dry wall 100, but rewetting coating 14 is the one or both sides coatings along fiberglass gridding 10.As selection, but but rewetting coating 14 coated glass fiber grids 10 external surfaces 100%, 70% of surface area, or be less than surface area 50%.In some structure, adopt a netted tacky adhesion 15, as vinyl acetate acrylic, phenylethylene ethylene/propenoic acid ester, vinyl/acetate, acrylate, styrene-acrylate, or its copolymer and mixture, or the like the glass fiber of fiberglass gridding 10 is bonded together.In using the example of a netted tacky adhesion 15, but it can be rewetting or can not rewetting, solvablely maybe can be scattered in the liquid water.In described preferred embodiment, but rewetting coating 14 also is used for the fiber of fiberglass gridding is sticked together.
As shown in Figure 3, a flat drywall joint can constitute to form a seaming zone 45 by docking a pair of dry wall plate 18 and 17.Dry wall band 100 can be used under the assistance of pressure sensitive adhesive layer 12, and perhaps when not adopting pressure sensitive adhesive layer 12, dry wall band 100 can be pressed lightly into one and be applied to thinly in the wet joint compound layer of seaming zone 45 before using dry wall band 100.If joint compound layer is used for dry wall band 100 is adhered to seaming zone 45, must be noted that the joint compound that capacity will be provided produces bubble to avoid described belt under described belt.When embedding belt 100, unnecessary joint compound be removed from edge.
No matter belt 100 uses with joint compound or from adhering to, be coated with a joint compound first coating 30 on belt, so that embed belt 100 substantially fully.When embedding belt 100, unnecessary joint compound is removed from edge.Can in described joint compound, add entry it is diluted, to be easier to operation.Similarly method can be used for interior angle, the exterior angle, and the reparation in horizontal joint and hole and crack is along the completion seam of electric box and switch with around the seam of pipeline and duct work.
After the first coating drying, preferably spend the night, on first coating 30, apply a dry wall compound second coating 40.Adopt 8 inches knives comparatively desirable, very thin being coated on first coating.If also need more coating, after second coating, 40 dryings, one the 3rd or the final coating (not shown) can adopt 10 inches knives to apply flat seams.Be necessary that second coating 40 or the 3rd coating can be mixed sand slightly.
The joint compound that is used for drywall joint of the present invention typically is divided into " drying " type or " curing " type.In the drying type joint compound, inserts comprises main calcium carbonate.Before the use, inserts and adhesive mix with several other known composition waters.After the use, when water drying evaporation, remain a drying, hard relatively cement-based material.
The joint compound of known conduct " curing " type comprises at least one half-H 2 O calcium sulphate pith.In order to produce plaster of paris, calcium sulphate dihydrate is converted into half water state from gypsum by a known process that is called calcining.This process is removed 11/2 molecular water from the calcium sulphate dihydrate gypsum.Half water form of calcium sulfate is more soluble in water than two water forms of calcium sulfate.When using the curing type joint compound, rehydrated one-tenth two water states of half-H 2 O calcium sulphate.This hydro-combination process generally takes place in the quite short time.Therefore, produce that to be used for the curing type joint compound preserved at bucket extremely difficult, thereby these compounds provide with powder type generally.The curing type joint compound also forms lattice structure when solidifying, and forms firmer, a more durable bonding.
The present invention is used to make the grid of dry wall band 100 and can weaves or braided fabric veil, mat, beaujolais or pile fabric for non-woven.They preferably include high strength fibre, and as glass fiber, a bit weaker can comprise thermoplasticity or thermosetting fibre, carbon, boron, graphite fibre or their combination.In most examples of the present invention, adopt to have about 5-500g/m
2, preferably about 20-120g/m
2The fiberglass gridding 10 of basis weight.This grid 10 can be by woven, as plain weave or frame up, or by braiding, or by a lax diablement fort processing or by non-woven fabric processing, as the glass fiber of the random walk of resin-bonding.Ideally, grid of the present invention is penetrating at least partially to wet joint compound, bonds reliably so that form one in seaming zone 45.Selectable, veil or fabric can be not too penetrating to joint compound, still are used to replace the papery belt, and therefore and the base coating of a joint compound use together.
But the described rewetting coating 14 that preferably is coated onto on the grid preferably has the character that is dissolved in or can disperses in liquid water.Glass belt in the past scribbles polymer usually, as a SBR rubber or a resinous binder, as vinyl acetate acrylic, phenylethylene ethylene/propenoic acid ester, vinyl/acetate, acrylate, styrene-acrylate, or the like, they are specially designedly to assist operation or slot on reinforce being used for, and do not consider the interaction of these coatings and joint compound.Conventional rubber coating such as SBR are minimum to the cohesive of the joint compound of curing or non-curing, therefore, can not reach optimal combined strength bination, and for instance, glass fiber tends to pull out from compound when load.But the preferred rewetting coating 14 of the present invention is solidified, and forms a strong bond so that described fiber more can be as a unit opposing load between the joint compound of preferred glass fiber and curing.But the preferred rewetting coating 14 of the present invention should be cheap as the resin binder that is used for the butadiene-styrene rubber (SBR) of glass dry wall band at present or connect.This coating 14 should be easy to and prescription is full of variety, and preferably should turn round on the liner cylinder that water purifies.It should not be easy to oxidized or by ultraviolet degradation significantly.Ideally, but preferably rewetting coating 14 provides with the latex form, as adhesive resin, and the aqueous emulsion of sealing agent and water.
But the preferred rewetting coating 14 of the present invention comprises one or more resins, and it is selected from and comprises: polyvinyl acetate, ethylene vinyl acetate, polystyrene, polyvinyl chloride, polyacrylate, ethene acetate multipolymer, ethylene acrylic acid co polymer, styrene butadiene, acrylate copolymer and starch; Protein adhesive, as casein, soybean protein, gelatine glue and gelatin; Vegetable glue is as cellulosic plastics and their chemical modification derivative; Natural gum (polysaccharide and carbohydrate) is as guar gum; Resin (pine tar), it can be water-insoluble; Mucus (agar, carrageenan and algin); Inorganic matter such as soluble silicate (water glass) and cement-based material (cement, gypsum) and their copolymer and composition.Most preferred, resinous binder comprises polyvinyl acetate (PVAc), as with the stable Vinac524 polyvinyl acetate of polyvinyl alcohol, with the stable Airflex 401 polyvinyl acetate/ethylene copolymer of polyvinyl alcohol, the two is provided by Air Prod ﹠ Chem, and it is positioned at the Pennsylvania, the Allentown city, No. 7201, main road, Hamilton, 18195.But rewetting coating 14 preferably provides with aqueous emulsion or the solution form that comprises about 25-75 weight % solid.Selectively, the powdery, water-soluble polymer can use or use by static with adhesive.But two kinds of prescriptions of the rewetting coating that discloses in the context of the invention are as follows:
Prescription 1
Vinac 524 emulsion (with the stable PVAc homopolymers of polyvinyl alcohol) 61.38%
Airflex 401 emulsion (with the stable PVAc/ ethylene copolymer of polyvinyl alcohol) 26.30%
Water 9.02%
Urea 0.25%
Hydrocer DP69 (paraffin wax, antitack agent) 3.00%
900-103 Henkel Foamaster NXZ mixes 0.05% with water 50/50%
The formulation data that other is relevant:
Solid level: 50%
Viscosity: about 1000cps
PH: about 6.0
Prescription 2
Vinac 524 emulsion (with the stable PVAc homopolymers of polyvinyl alcohol) 74.53%
Benzoates plasticizer 9-88 (the dipropylene glycol dibenzoate plasticiser that is used for PVAc) 7.23%
Urea 0.25%
Hydrocer DP69 (paraffin wax, antitack agent) 3.00%
Water 14.94%
900-103 Henkel Foamaster NXZ mixes 0.05% with water 50/50%
As above reflection, a kind of be used for preventing the PVAc resin storage process excessively the important component of suction be a kind of antitack agent, as animal oil, fat, starch, dextrin, silicone oil, wax and composition thereof.Preferred antitack agent is the low melting point paraffin wax.Paraffin wax can be emulsified in prescription and when form thing when dry on surface " blooming ".But antitack agent is as the water vapor barrier of the rewetting coating 14 on the dry wall band 100 of the present invention, so that significantly reduce obstruction in roll of tape.The weight of antitack agent in prescription should be less than 5-10%, but can freely disperse in the water that is dissolved in the joint compound with box lunch rewetting coating 14 time.Therefore, when drying, can resist steam, when water soluble when liquid water in the joint compound contacts maybe can disperse but have the above-mentioned rewetting coating 14 that in solution, comprises antitack agent and PVAc resin formula.
Adhesive ingredients of the present invention can be with any known pressure sensitive adhesive material." pressure-sensitive " used herein refers to any releasable adhesive or releasable viscosity mode.The cementitious mixtures that is suitable for belt comprises that for example water base contact adhesive is as acryloid cement, for instance, isooctyl acrylate and acrylic acid copolymer, or the copolymer of vinylacetate ethylhexyl acrylate, they can be by the tackifier combination.Selectively, described adhesive can comprise quick heat of solidification plasticity " hot melt " adhesive.Adhesive component also can comprise a two-sided viscosity belt.Also expect based on also using from elastomeric adhesive natural or that synthetic rubber is chosen.Will be understood that the difformity of these adhesives, as continuous coated, line of discontinuity, square, point, annulars etc. can adopt.
The method for optimizing of the preferred dry wall band of preparation the present invention will be described now.42.1-52.9g/m
2The glass fabric weave mesh pass one earlier and comprise prescription 1 or 2 latax, through a cover compression roller, they are used to control the amount that described fabric adheres to latex then, are about 5-20g/m after the general drying
2Coating.Described roller can be adjusted the seam width or pressure is carried out this function, but the solid level of latex and viscosity are the key factors of the described coating weight of decision.Then, the fabric that soaks into by contact with steam generator or by in a hot baking box convective drying.
At this moment, but the fiberglass gridding 10 that is coated with rewetting coating 14 provides a pressure sensitive adhesive layer 12 in the one side, applies about 3-15g/m usually
2Adhesive.Finish in this subsequent step that can on the finisher of opening in a minute, carry out, but perhaps directly finish with rewetting coating step.Pressure sensitive adhesive layer 12 is used for when preparing with dry wall compound filling dry wall dry wall band 100 being pasted drywall surfaces.Selectively, but fiberglass gridding 10 can be soaked into by rewetting coating 14 and drying, and on same coating production line, through an engagement coating machine, it is coated onto an amount of latex pressure-sensitive adhesive on the described fabric then.This fabric then through a mechanical convection baking box with the contact adhesive drying.Which kind of situation no matter, grid 10 is involved in the major diameter roll then, so that be transported to cutting department, roll is processed to the belt of appropriate length and width here.
Also can be in alternative manufacture method, but can then be transported in the machine that is called the hot-melt adhesive coating machine that separates with big volume glass or other fabric of rewetting coating 14 dippings.Contact adhesive can be based on a kind of rather than emulsion technique in a lot of hot-melt polymer technology (as above-mentioned).Described heat seeling coating machine arrives the adhesive coated of skim fusion one side of fabric.Fabric forms big scroll and is transported to cutting area then, and it is processed to the belt of appropriate length or width here.No matter based on hot melt or emulsion technique, contact adhesive is all carried out identical functions.It in this two system the method difference of application of adhesive.
Big scroll according to said process production can change belt on cutting machine/rewinder.This belt can be an Any shape, is about 90m's although great majority are wide about 50mm.Twine, pack these belts then and send to the client.
Example
Carry out tension test according to ASTM C474 (appendix) on joint compound and the composition that is connected belt, adopt prescription 1 and 2 to be coated to petinet (46.3g/m
2), plain cloth (47.5g/m
2) and braid (52.9g/m
2) on.These compare with control sample and papery belt with SBR coating.Each belt sample is applied to two and mixes on the banjo fixing butt jointing of sand polyethylene bottom.Joint compound applied in two coats, and dry special time.The silver coating of one conduction is coated onto test zone and polyphone forms a loop.Under tension loading, on a tension test machine, test described sample then.When the crack occurred, the loop disconnected, and notes described load.
The tension test result discloses, but when rewetting coating of the present invention replaced coating based on SBR rubber to be used on the glass belt, the load in first crack can significantly increase.
The average load data in first crack (KN) are listed in the following Table 1.
| Table 1: average load ASTM-C474 (appendix) * of first crack (KN) | |||||
| The glass grid type | Coating formula | Average load | Standard deviation | The % standard deviation | % increases |
| Rib fabric | 1 | 0.99535 | 0.06660 | 6.69117 | 56.4 |
| Rib fabric | 2 | 1.04833 | 0.05500 | 5.24635 | 64.7 |
| Braided fabric | 1 | 1.14533 | 0.04948 | 4.31990 | 33.8 |
| Braided fabric | 2 | 1.16988 | 0.07084 | 6.05531 | 36.67 |
| Plain cloth | 1 | 1.1815 | 0.11113 | 9.40573 | 15.83 |
| Plain cloth | 2 | 1.30383 | 0.04717 | 3.61752 | 27.8 |
| The lightweight plain cloth | 2 | 0.9719 | 0.03865 | 3.97723 | 52 |
| Contrast lightweight plain cloth | SBR | 0.63947 | 0.02935 | 4.59053 | |
| The contrast rib fabric | SBR | 0.63643 | 0.10435 | 16.39574 | |
| The contrast plain cloth | SBR | 1.02007 | 0.02424 | 2.37607 | |
| The contrast of papery belt | N/A | 0.57779 | 0.06135 | 10.61801 | |
| The contrast braided fabric | SBR | 0.85598 | 0.03834 | 4.47865 | |
* present method of testing allows sample bending in test process to go out to test the plane.Therefore, tensile strength is represented in the first fracture number possible errors.The actual strength in first crack may be not higher when having bending or deflection to occur causing the crack.
These data are reflected in the bar chart of Fig. 4, adopt average to read the load of prescription 1 and 2 when available average.Can be observed in these tests, add about 16% but adopt the rewetting coating of prescription 1 and 2 to be loaded to reduce with respect to first crack of adopting the SBR coating.Please note that all samples all scribble contact adhesive in the one side.Can expect that the average load meeting when first crack, the back side that does not have adhesive to be coated onto to be equal to sample increases twice.What this was made is interpreted as, and in scribbling the sample of adhesive, half surface area of glass grid will be covered by one deck low modulus pressure sensitive, and it places the load on the described sample inoperative to opposing.
Also observe, standardized product is to pull out from joint compound and destroy owing to fiber, but and rewetting coating of the present invention is owing to the joint compound layering near cated fiber destroys.Although described tension test carries out on polyethylene blocks, can anticipate that joint compound is relatively poor to poly viscosity ratio here, therefore actual dry wall test may demonstrate better result.
Can recognize the method that the invention provides drywall joint and joint fabrication from foregoing, their confirm to have improved tensile property with respect to kraft belt seam and other employing based on the glass belt seam of rubber or adhesive.But strap configurations of the present invention adopts a rewetting coating, and it comprises the resin binder in the preferred embodiment, and it is dissolved or dispersed in the aqueous mixtures of most joint compounds at least in part.Although set forth various embodiment, this is only used for illustrative purposes, rather than limitation of the present invention.The various modifications that it will be apparent to those skilled in the art that all belong within the scope of the appended claim of the present invention.
Claims (10)
1, a kind of dry wall band (100) that is applicable to that joint compound repairs and seam cover is characterized in that:
One fiberglass gridding (10); And
One places the coating (14) on the described glass fiber of a part of described grid, described coating comprises a resinous binder, it is solvable at least in part maybe can be scattered in the described joint compound, and described coating can form an adhesive bond with described joint compound when solidifying.
2, dry wall band according to claim 1, wherein said grid comprises a non-woven fabric, woven fabric, braided fabric, seat or beaujolais.
3, dry wall band according to claim 1, wherein said resinous binder comprises an aqueous emulsion or solution, it is coated to the described coating of the dry then formation of described glass fiber part.
4, dry wall band according to claim 3, wherein said aqueous emulsion or solution comprise one or more resins, and it is selected from and comprises: in the group of polyvinyl alcohol, polyvinyl acetate, polystyrene, polyvinyl chloride, polyacrylate, ethylene-vinyl acetate copolymer, ethylene acrylic acid co polymer, styrene butadiene, acrylate copolymer, starch, protein adhesive, soybean protein, gelatine glue, gelatin, vegetable glue, natural gum, resin, mucus, inorganic compound, cement-based material and copolymer and composition thereof.
5, dry wall band according to claim 1, wherein said joint compound comprise that an acrylate copolymer and described resinous binder comprise polyvinyl alcohol, ethylene acrylic acid co polymer, polyvinyl acetate or its composition.
6, dry wall band according to claim 1, wherein said grid also comprises a contact adhesive that places the one first surface.
7, dry wall band according to claim 6, wherein said cated grid is cut and is wound in a roll of tape.
8, dry wall band according to claim 1, wherein said resinous binder is as an aqueous emulsion that has at least about 25-75 weight % solid.
9, dry wall band according to claim 1, wherein said resinous binder comprise the polyvinyl acetate aqueous emulsion that is coated to described grid and the described coating of dry back formation.
10, dry wall band according to claim 1 also comprises an antitack agent.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/IB2003/002226 WO2004099529A1 (en) | 2003-05-06 | 2003-05-06 | Drywall tape and joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1788130A true CN1788130A (en) | 2006-06-14 |
Family
ID=34385732
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA038265796A Pending CN1788130A (en) | 2003-05-06 | 2003-05-06 | Drywall tape and joint |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP1620613A1 (en) |
| JP (1) | JP2007516366A (en) |
| CN (1) | CN1788130A (en) |
| AU (1) | AU2003232993A1 (en) |
| BR (1) | BR0318297A (en) |
| CA (2) | CA2427514A1 (en) |
| WO (1) | WO2004099529A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102713038A (en) * | 2009-12-07 | 2012-10-03 | 阿斯特罗姆公司 | Nonwoven substrate for joint tape and joint tape that is dimensionally stable and foldable without losing mechanical strength containing said substrate |
| CN103643516A (en) * | 2013-12-02 | 2014-03-19 | 山东永泰化工有限公司 | Preparation method of glass fiber wall cloth coating |
| CN108026414A (en) * | 2015-09-21 | 2018-05-11 | 美国石膏公司 | Dry wall bonding ribbon with dual purpose adhesion backing |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080118728A1 (en) | 2006-10-20 | 2008-05-22 | Dow Global Technologies Inc. | Aqueous dispersions disposed on glass-based fibers and glass-containing substrates |
| US9376824B2 (en) * | 2006-12-12 | 2016-06-28 | United States Gypsum Company | Nonwoven joint tape having low moisture expansion properties and method for using same |
| US8828892B2 (en) | 2007-01-18 | 2014-09-09 | Saint-Gobain Adfors Canada, Ltd. | Drywall tape and drywall joint |
| WO2010099563A1 (en) * | 2009-03-05 | 2010-09-10 | Csr Building Products Limited | Improved plasterboard jointing system |
| WO2014075188A1 (en) * | 2012-11-16 | 2014-05-22 | Shawcor Ltd. | Fiber reinforced tape or sheet for reinforcing pipe |
| CN107905407A (en) * | 2017-12-01 | 2018-04-13 | 中冶天工集团天津有限公司 | A kind of method of flame-retarded gypsum wallboard joints seismic crack |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3391037A (en) * | 1964-10-12 | 1968-07-02 | Joseph D. Mcnulty | Method of covering joints in interior wall construction |
| CA957120A (en) * | 1971-01-28 | 1974-11-05 | Joseph W. Schneller | Drywall joint system |
-
2003
- 2003-05-01 CA CA002427514A patent/CA2427514A1/en not_active Abandoned
- 2003-05-06 AU AU2003232993A patent/AU2003232993A1/en not_active Abandoned
- 2003-05-06 CA CA002525971A patent/CA2525971C/en not_active Expired - Lifetime
- 2003-05-06 EP EP03727793A patent/EP1620613A1/en not_active Withdrawn
- 2003-05-06 BR BRPI0318297-5A patent/BR0318297A/en not_active IP Right Cessation
- 2003-05-06 CN CNA038265796A patent/CN1788130A/en active Pending
- 2003-05-06 JP JP2004571534A patent/JP2007516366A/en active Pending
- 2003-05-06 WO PCT/IB2003/002226 patent/WO2004099529A1/en active Search and Examination
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102713038A (en) * | 2009-12-07 | 2012-10-03 | 阿斯特罗姆公司 | Nonwoven substrate for joint tape and joint tape that is dimensionally stable and foldable without losing mechanical strength containing said substrate |
| US8962128B2 (en) | 2009-12-07 | 2015-02-24 | Ahlstrom Corporation | Nonwoven substrate for joint tape and joint tape that is dimensionally stable and foldable without losing mechanical strength containing said substrate |
| CN103643516A (en) * | 2013-12-02 | 2014-03-19 | 山东永泰化工有限公司 | Preparation method of glass fiber wall cloth coating |
| CN103643516B (en) * | 2013-12-02 | 2016-01-20 | 山东永泰化工有限公司 | A kind of preparation method of glass fibre wallhanging coating |
| CN108026414A (en) * | 2015-09-21 | 2018-05-11 | 美国石膏公司 | Dry wall bonding ribbon with dual purpose adhesion backing |
Also Published As
| Publication number | Publication date |
|---|---|
| BR0318297A (en) | 2006-07-11 |
| AU2003232993A8 (en) | 2004-11-26 |
| CA2525971C (en) | 2008-11-18 |
| WO2004099529A1 (en) | 2004-11-18 |
| CA2525971A1 (en) | 2004-11-18 |
| EP1620613A1 (en) | 2006-02-01 |
| CA2427514A1 (en) | 2004-11-01 |
| JP2007516366A (en) | 2007-06-21 |
| AU2003232993A1 (en) | 2004-11-26 |
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Effective date of registration: 20061229 Address after: Lake Ontario, Canada Applicant after: Saint Gobain Technical Fabrics Co-applicant after: Saint Gobain Process Textiles Co., Ltd. Address before: Lake Ontario, Canada Applicant before: Saint Gobain Technical Fabrics Co-applicant before: Stein Tid Co. |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |