JPS59501250A - laminated wipes - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention generally describes -A-J - It relates to a crushing unit and a method for manufacturing the same. The present invention is very light on the load. one layer of fiber web or The present invention relates to a laminated web structure in which two layers are bonded tangentially.

Background of the invention According to the disclosure of the prior art, paper-making fibers such as kamotsu (reinforcing loose fiber webs) are mainly used. can be used to create a laminated web structure suitable for use as a heavy-duty wipe. this is Generally, by attaching a reinforcing layer to one or more layers of a uniform density web such as tissue paper, This is being implemented.

An example of a conventional laminate structure using tissue paper layers is Camden U.S. Pat. No. 3,862. , No. 877, I:! -1 It consists of 6 layers of tissue paper, with both outer The tissue paper located in the center facing the tissue layer contains granular soft viscous non-migratory binder. It is impregnated with a large amount of solid matter.

Thomas U.S. Pat. Discloses a laminated wipe in which a paper layer is disposed between both outer scrim layers. .

The laminated wipe structure disclosed in Kemp U.S. Pat. No. 3,956,638 is suitable for Cells reinforced by imprinting a discontinuous pattern of polymeric resin on each side It contains 10 relatively non-stretchable layers of thin loin-based leaves. This wiping material The outer layer is a highly extensible creped cellulosic tissue paper with a reinforced central layer. There is a discontinuous connection layer on the surface.

No. 3,879,257 to Zientile et al., assigned to the assignee of this invention. is a relatively low-fiber heritage soft sandwiched between two wear-resistant strong surface regions of both fiber concentrations. Discloses a single-layer fibrous web with a laminated cross-shaped structure consisting of an absorbent central core region. . This surface area contains a binder to provide strength, at least The bonding process in one surface area is fine (C-creped). Tile et al.'s patents also disclose methods for making ready-made fibrous webs or laminate-like webs. The method involves soaking a binder on one side of the web to about 10% to about 60% of the thickness of the web. Apply the bonding agent through the web in a finely spaced pattern on the other side of the web. Applied to penetrate about 10% to about 60% of the thickness but not substantially connect to the first binder. and the said other side of the web is closely laminated to the creping surface by means of a binder. , and a step of web-creping from the creping surface.

A strand was formed between two fibrous webs prepared according to the above-mentioned patent of Dientile et al. It is also known to form laminated web structures by laminating doscrims together. be. The spacing of the scrim strands results in holes of approximately 0.079 square inches. this Relatively large unreinforced areas such as This makes this laminate structure unsuitable for use as a harsh wiping material. It makes it a big deal.

U.S. Pat. No. 2,834,809 to Schutte et al. has a fibrous web that is absorbent and A method of mechanically processing to make it malleable, i.e. as parfume embossing. A known method is disclosed. In this method of Shusote et al., the web is It is passed between the two tabs of two rolls, and the surface of each roll has a convex part on the other roll. It consists of a large number of projections and depressions arranged to engage with corresponding recesses in the roll.

As the fibrous web passes between the nip of two rolls, the web is partially compressed and The area between the compressed areas is stretched beyond the elastic limit of the fibers or interfiber bonds. As a result, fiber separation occurs and the porosity of the web increases. paper in some cases If the tensile strength exceeds -, holes will form in the web. By this method, Shusote et al. It acknowledges that the web can be mechanically processed.

Summary of the invention In accordance with the present invention, fibers having a predominant length of less than It has a binder treated in a finely spaced pattern, and the binder treated area is finely creped. A multilayer wipe having a strong surface area is provided. This wiping material , consisting of fibers with a main length less than % inches and having a lower fiber concentration than the surface area. It also has an inner core area. This wipe has a main length of less than X inches It is made of fibers with a higher fiber concentration than the inner core region, and the fibers are bonded to It has a binder treated in a finely spaced pattern therein to create a fine network structure. a second strong region (provided that the binder in the second strong region is substantially connected to the binder in the strong surface region); have no contact). This wiping material is then bonded to the outer surface of the second strong region. has a minimum wet tensile strength of approximately 16 oz/in measured in any direction and a web of fibrous material having substantially no pores larger than 0.02 square inches; Reinforced by a reinforcing layer.

The wipe in another aspect of the invention further has a major length of less than X inches. The fibers are made of fibers that are bonded together to form a strong network structure. Sixth strong region with binder treated in a spaced pattern; main length less than X inches a second inner core comprising fibers having a generally lower fiber concentration than the third strong region; Area: and consisting of fibers having a predominant length of less than X inches and containing fine particles therein. It has a binder treated in a spaced pattern, and the binder treated area is finely creped. a second strong surface region in which the binder in the second strong surface region is in the sixth strong surface region of the fiber; a second inner surface generally not connected to the binder and adjacent to the second strong surface region and the sixth strong surface region; Many of the fibers in the core region are bound to the second strong surface area by either papermaking bonds or binders. It is possible to have: connected to fibers in the region or in the sixth strong region Ru.

Yet another aspect of the invention, the wiping material is bonded to the outer surface of the first strong region. has a minimum wet tensile strength of approximately 16 oz/in measured in any direction and a web of fibrous material having substantially no pores larger than 0.02 square inches. It is also possible to have a second reinforcing layer.

According to method f: of the present invention, the multilayer wipe (a) has a major length less than % inches; A binder is applied to one side of the web made of fibers to penetrate approximately 10 to 60% of the web. (1) Apply about 15 to about 60% of the coating area on the other side of the J-web. The bonding agent is applied in a finely spaced pattern covering about 10% to about 60% of the thickness of the web. (C) the other side of the web; The bonding treatment part on the side is layered tightly on the creping surface, and the web is separated from the creping surface. Crepe: Then r (, i) on the surface of the above one side of the web, in which direction It has a minimum wet tensile strength of approximately 16 oz/in and a 0.02 sq. bonding a reinforcing web of fibrous material having substantially no pores larger than one inch. Therefore, it is produced.

In another aspect of the invention, the multilayer wipe has a surface on the other side of the web. It has a minimum wet tensile strength of approximately 16 oz/in and 0.02 A second reinforcing weg of fibrous material having substantially no pores larger than an inch square is adhered. It can be made by

In yet another aspect of the invention, the multilayer wipe further comprises: Steps (a+, (1) J, F- and (c ): Then, glue the above one side of the second web to the reinforcing web. It can be made by

FIG. 1 is a schematic cross-sectional view of a laminated web structure; FIG. 2 is a schematic cross-sectional view of a laminated web structure; FIG. It is a cross-sectional schematic diagram of.

FIG. 3 is a cross-sectional, schematic diagram of yet another laminated web structure: FIG. 4 is a block flow diagram of a method for making the web of FIG. 1: Figure 5 shows the results of Figure 2 when added to some of the steps in the method of Figure 4. 6 is a block flow diagram of the additional steps that result in the web; and FIG. After adding to some of the steps in the method shown in Figure 4, the web shown in Figure 6 is generated. FIG.

BEST MODE FOR CARRYING OUT THE INVENTION FIG. 1 schematically represents a cross-sectional view of a multilayer web structure 10 made in accordance with the present invention. I'm watching. The web 10 includes a surface fibrous layer 12 and an inner fibrous layer adjacent to the surface layer 12. 14, a second inner 11IW delamination 16 adjacent to the inner layer 14, and the inner layer 16; It consists of a fibrous reinforcing layer 18 adjacent to. The surface fiber layer 12 is in contact with the surface 11 of the layer 12. It is reinforced by applying a bonding agent in a finely spaced pattern. inner layer 14 consists of fibers loosely bound together by papermaking bonds. Inner 1iil 1 layer 1 The fiber density of 4 is generally lower than the fiber density of the reinforced surface layer 12. adjacent to the reinforced surface layer 12 Many of the fibers in the abutting inner layer 14 are either due to papermaking bonding or to adhesive bonding agents in the surface layer 12. The fibers in the surface layer 12 are connected to the fibers in the surface layer 12 by either Unity among the 14 is given. Inner fibrous layer 16 is also adhesively bonded to the surface of layer 16. It is reinforced by applying the mixture in a finely spaced pattern. Reinforcement layer 1G The fiber density of is generally higher than that of the inner layer 14. Inside side adjacent to reinforcing layer 16 Many of the fibers in N14 are either due to paper-making bonds or adhesive binders in reinforcing layer 16. Since the fibers in the surface layer 12 are connected to the fibers in the surface layer 12 by either layer, the It gives a sense of unity. The reinforcing layer 18 is reinforced by suitable means, such as an adhesive bond. It is adhered to surface 17 of layer 16. In a preferred embodiment, the surface of layer 12 The binder on either surface 11 or surface 17 of layer 16 finely crepes the surface. This makes it more flexible. In the most preferred embodiment, both surfaces 1 The binders in Nos. 1 and 17 are finely creped.

In the web structure of FIG. 1, reinforcing surface fibers in combination with a lower density inner layer 14 Layer 12 provides web 10 with a balance of good 11if abrasion with absorbency and flexibility. make it easier. The binder in the reinforced surface layer 12 is applied in a finely spaced pattern. and has some tendency to produce lint when the surface is used for wiping. Will. In such cases, reinforcing layer 18 provides full strength and fracture resistance to web 10. In addition to imparting destructibility, the fibers also reduce absorbency to the surface of the web 10. Provides high wear resistance that prevents debris from forming.

FIG. 2 schematically represents a cross-sectional view of another web structure 20 made in accordance with the present invention. are doing. Layer 12a.

14a, 16a and 18a are layers 12.14.16 and 18, respectively, of FIG. It has the same configuration as . The second reinforcing layer 22 may be formed by any suitable means, such as an adhesive bond. The reinforcing layer 12a is bonded to the surface 11a of the reinforcing layer 12a.

The web 20 of FIG. 2 has two outer reinforcing layers 18a and 22, so that both Suitable for applications where the surface needs to be highly resistant and relatively free of fiber waste. do. The relatively low density inner hawk fiber region 14a contributes to the improved absorption properties of the weds. Not only does the layer have better drape properties than if the layer were not present, but the 20.

FIG. 6 schematically represents a cross-sectional view of another web structure 30 made in accordance with the present invention. I'm watching. Layer 12b.

14b, 16b and 18'b are the same as layers 12, 14° 16 and 18 in FIG. It is the composition. In addition to layers 12b, 14b, 16b and 1'8b, web 30 includes Sixth inner fibrous layer 32 adjacent to stratum corneum 18b, fourth inner fibrous layer HI adjacent to layer 32 34, and a third surface fibrous layer 36 adjacent layer 34. Surface fiber layer 36 1 by applying the binder to the surface 37 of the layer 36 in a finely spaced pattern. It has been strengthened. The inner layer 34 is also made of fibers loosely bound together by papermaking bonds. Consisting of Like layer 14b, the fiber density of inner layer 34 is generally that of reinforced surface layer 36. lower than fiber density. The fibers in the inner layer 34 adjacent to the reinforced surface layer 36 are either by bonding or by an adhesive bonding agent used to strengthen the surface layer 36. The unity between layers 34 and 36 is connected to the fibers in surface layer 36 by gender is given. Inner fibrous layer 32 also applies adhesive to surface 31 of layer 32 in finely spaced areas. It is strengthened by applying it in a pattern. The fiber density of the reinforcing layer 32 is approximately The fiber density of the inner layer 34 is higher than that of the inner layer 34. Fibers in inner layer 34 adjacent reinforcing layer 32 (either by papermaking bond or by adhesive bonding agent in reinforcing layer 32) Since the fibers in reinforcing layer 32 are interconnected, cohesion between layers 32 and 34 is imparted. It will be done. Surface 31 is of any suitable design.

The web 30 of FIG. 6 has two low density inner layers 14b.

A two-layer reinforced surface layer 12b of fibers combined with 34.

36, with a balance of absorbency, flexibility, drapability, and abrasion resistance. Provides access to the web 3o. The reinforcing layer 18b provides full strength and tear resistance to the web 3o. Adds destructive properties.

In the preferred embodiment of FIGS. 1-6, reinforcing layers 18.18a, 18b and Paper-making wood pulp in which all fiber layers except 22 are short fibers less than A inch in length. It is preferable to mainly consist of lignocellulose fibers such as cotton linters and cotton linters. Yes. However, the web may be partially or entirely made up of relatively longer fibers. (even if it is broken), it still retains the advantages of the present invention. Examples of relatively long fibers are cotton, wood, rayon, regenerated cellulose, and cellulose esthetics. fibers such as cellulose acetate fibers, polyamide fibers, acrylic fibers, polyester fibers, vinyl fibers, protein fibers, fluorocarbon fibers, dinitrile fibers, dinitrile fibers, Natural fibers such as trill fibers or synthetic fibers. The length of these fibers is approximately 21 Up to 7/2 inch long (may be longer, but longer for making webs on conventional papermaking equipment) and short length is advantageous. It is economical to use at least 50% papermaking fiber. and is particularly advantageous for other reasons. Also, the fibers can be randomly arranged without aligning them. Orientation is also particularly advantageous.

The pattern of binder applied to the web means that the binder covers a significant portion of the surface of the web. on either side with a fine line or some shape of area so as to leave it free from the may be used, but it must appear in one of the words.

A preferred pattern is that in the final web product the binder covers about 15% of the total surface area of the web. % to about 60%, and about 40% to about 85% of each surface of the web is free from binder forces. It should be left as is.

If the web consists primarily of papermaking fibers, the Apply the binder in a streak pattern so that a reticulated web is formed by the binder. It turned out that it is desirable to use a special IC. Papermaking fibers generally have a having a length of less than 6 inches and typically having a main fiber length of about 6 inches. Gayo (known as ``gayo''), therefore, instead of the interfiber bonding traditionally used in papermaking. If strength is to be imparted to the sheet primarily by a binder, then It is important that there are few continuous interconnections of the fibers due to the binder. It is essential. Shape of parallel lines, bars, or other discrete areas in which the binder pattern , unless such discrete areas are spaced apart by less than the average fiber length. The web lacks substantial strength (although the adhesive bond pattern may be streaky or If the is reticular in shape, the interconnecting tufts of binder will allow the gaps between the binder application lines to Provides strength even where significant areas are defined as unbonded treated web sections A network structure is provided.

Reinforcing layers 18.18a, 18b and 2 of FIGS. 1, 2 and 3 respectively 2 is a material that has good drapability and is strong (and may be difficult to use). It has no opening. In particular, reinforcement 18.18a.

18b, and 22 have a minimum temperature of approximately 16 oz/in measured in any direction @( 丞) Should have tensile strength. In addition, as a measure of drape suitability, the reinforcement layer 18 ゜18a, isb and 22 are ASTM D 1388-75, volume 32 It should have a bending stiffness in the range of about 10 to about 25 when measured according to the method. good In a second preferred embodiment, the reinforcing layer is a randomly deposited spunbond nonwoven fabric. Ru. One of the preferred reinforcements is spunbond with a 104 oz./sq. yd. Nylon web, sold under the trademark ``Selesox'' and manufactured by Monsando. ・Textile ° Company (800 North Lindbergh Pulavard, St. Louis, MO 66166).

FIG. 4 is a flowchart of a method for making the wiping material shown in FIG. Shown in Figure 4 As shown, this method is carried out by processing 600 rolls of base paper. Although this method is shown starting from In a paper making machine such as that described in U.S. Pat. No. 3,879,257 by Ntile et al. It is also possible to start by processing the web that is created. Those skilled in the art will understand. The head paper 60 is attached to one part of the web in step 62. Treated by applying a binder into the surface.

The binder may be applied to the entire surface of the web, but is preferably applied to the surface of the web in fine spaces. Applied in a spaced pattern.

Infiltration of the binder into the web occurs after the creping step, represented by block 68. The web thickness is controlled to be expanded to about 10% to about 60%. Add the binder to one part of the web 60. After the surface applying step 62, the bonding agent applied to one surface of the web 60 to bring the web into close contact with the creping surface and remove the web from the creping surface. Preferably, a step 64 is performed. After applying the bonding agent to one surface, step 6 A bonding agent is applied to the other surface of the web 60, as represented by 6. engineering As in step 62, the binder may be applied to the entire web surface, but is preferably applied to the entire web surface. applied in the form of finely spaced grooves on the surface of the web. Penetration of the binder into the web is Although it extends from about 10% to about 60% within the web thickness, there is no substantial are controlled so that they do not connect with each other. Applying a binder to the other surface of web 60 After step 66, the web 6 is bonded by a binder applied to the other surface of the Unizoro 0. 0 to the creping surface and crepe the web from the creping surface. Preferably, step 68 is performed.

After the final creping step, the treated web 60 is wound around mother rolls 70 and 72. It is desirable to complete manufacturing of the wipes product at another location. Instead, Directly to the next step 78 in which the fiber web 60 is bonded to the reinforcing layer fed out from the roll 76. It is also possible to proceed in tandem. The contact NYlI formulation in the lamination step 78 is Union Carbide Corporation 7 (270 Park Avenue, New l”ucAR878J, available from York, NY 13017), Cross-linking available from Anamide Company, Wine, NJ 07470. It is mixed with 6% of the agent rubber "Shimell 303". This adhesive has a width of 0.012 6 x 90 mil diamond pattern with 94.3 micron deep lines by a gravure roll with 0 mil (long dimension aligned longitudinally of the wag) is printed on the surface of the reinforcing layer 76. Reinforcement layer printed with adhesive 16 is brought into contact with the surface of web 60, and then the combined web is e.g. Dry by passing through a Yankee dryer at a temperature of 600-325'F. Ru. To cure the laminating adhesive, the web may be further air-dried, e.g. Heat to a temperature of 460-4501°C depending on the oven. Reinforcing layer 76 to web 72 The adhesive used for lamination was applied in a continuous diamond pattern. However, other no-no-turns can also be used, and may actually be preferable. This will be obvious to those skilled in the art. For example &-1, in a spaced spot pattern Adhesive application is faster than webs laminated with continuous turns of adhesive. It is believed that this results in a web with excellent drapability. Lamination process 78 The laminated structure after is generally shown in FIG.

The laminated wipe structure resulting from lamination step 78 has a Relatively solid, strong and unknown.

If so, micro-crepe and emboss the laminated wipe structure. , and a mechanical softening step 82, such as a strip-to-fouling process. machine A preferred method of mechanical softening step 82 is disclosed by Schutte et al., U.S. Pat. No. 2,864,80. No. 9 is used to emboss the laminated structure according to No. 9.

After the mechanical softening step 80, the laminated wipe structure is wound onto a mother roll 84. , which may later be converted into individual wipes packages).

Figure 5 shows the laminated wiper of Figure 2 when carried out after the lamination step 78 of Figure 4. 2 is a block flow diagram of the additional steps that result in the. Indicated by the dashed line 80 The laminated wipe material structure obtained from the laminating step 78 is subjected to a second laminating step 88, where the unreinforced surface layer of the laminated structure produced from lamination step 78 is 2 reinforcing webs 86 are glued together. The bonding process 88 is the same as the bonding process 78 in FIG. They are qualitatively the same. The laminated web structure resulting from lamination step 88 is shown in FIG. It has a structure that is A preferred method for producing the laminated wipe structure of FIG. In the method, the laminated web structure undergoes a mechanical softening step 82 of FIG. Perform the same mechanical softening step 90. Mechanically softened wipes are It is wound into a roll 92 and later converted into a package of wipes.

Figure 6 shows the laminated wiping in Figure 3 when performed after the creping surface in Figure 4. 1 is a block flow diagram of additional steps to produce a material. In a preferred method, or the chain 7 Webs 70, 72 and 7 as directed by 1.73 and 75 6 are laminated together in a single-stage lamination step 94. This is reinforced Unisif 6 Reinforcement placed in contact with one surface of web 72 and not in contact with web 72 Applying an adhesive as described in lamination step 78 of FIG. 5 to the surface of web 76; Then, the second web 70 is contacted to the surface of the web 76 that is not in contact with the web 72. It is done by letting Next, I will write about the bonding process 78 in FIG. Dry and cure the laminated web structure as described above. From lamination process 94 The resulting laminated web structure is that shown in FIG. But long and performing a mechanical softening step 96 that is substantially the same as the mechanical softening step of FIG. is preferred. The mechanically softened laminated wipes are later assembled into individual wipe parts. It can be wound onto a mother roll 98 for conversion into a package.

In the method generally depicted in FIGS. 4-6, a mechanical softening step 82. 90 and 96 are placed after the corresponding lamination steps 78, 88 and 94. is displayed. Mechanical softening steps 82, 90 and 96 are shown in FIG. It is the applicant's intention that this can also be carried out immediately after the raping step 68. ing.

In discussing Figures 4-6, it should also be noted that the mechanical softening process is optional. has been done. As a general index, the bending rigidity of the wiping material after the lamination process is 600 In larger cases, it is advisable to carry out a mechanical softening step.

The web structures of FIGS. 1-3 are generally as low as 30 lb/ream (2880 sq. ft.) and the taller one has a final basis weight of 110 lbs./ream, but the preferred The correct range is 65-95 lbs/ream.

Example 1 Example 1 is a strong wipe having the structure shown in FIG. 6 manufactured according to FIGS. 4 and 6. It is scraped wood.

Pace Web 60 was added with [Ryco637J] to reduce interfiber bonding. , from bleached Northeastern softwood kraft fiber pulp slurry in conventional papermaking equipment. Manufactured like. Place this web in close contact with the Yankee dryer and then click it. I made her rape me. The nominal physical properties of the pace web 60 were as follows.

Basis weight 31.0 bond/2880 square feet Bulk 210 mil 724)- ) Machine direction (MD) tensile strength: 17 oz/inch Machine direction elongation: 6% Transverse direction (aD) tensile strength 11 oz/inch base web 600 both surfaces Bonded and creped according to steps 62, 64, 66 and 68 in the figure. . The binder applied to the surface of the web has a solid content rA-1 of 10 to 18 bonds/ream. 05” (Air Products & Chemical Co., P.O., Box 568, Allentau) Up to 0.5 parts of salt per 100 parts of solids, PA 18105L rA-105J ammonium chloride, [A-105J up to 0.5 part per 100 parts solids Star ■F” (Diamond Jamrock Corporation, 650 Maun Tokenpuru Avenue, Morristown, NJO 7960), and “h-10 5" "Natrosol" up to 0.5 parts per 100 parts solids (Hercules Corp.) ration, Wilmington, DE). This bond The agent has a 90 mil x 60 mil diamond pattern (diamond line width is 9.4~ 10.8 mils and line depth is 68-76 microns) printed on the surface by the roller. After the second creping step 68, the wafer The web is a spunbond nylon web with a basis weight of 0.3 oz/sq. Nox” (Monsanto Textile 4L 800/-x Lindperg Bouloveard, St. Louis, Mo., 63166). Adhesive placement The material and its application method are as described in the explanation of the laminating step 78 in FIG. Ta. After lamination, the wiping material structure was bonded according to the Schutzte et al. patent, supra. - Emboss the emboss. Barhu Enobotsing has the same Nankle pattern. This is carried out by passing the laminated wipe structure between two rolls of paper. Each na The cross section of the buckle is a hexagon long in the longitudinal direction (MD), with 0, 05 Two parallel long sides of 2 inches and extending in a direction forming a 45 degree angle with the 70 long sides. It has two pairs of parallel sides of 0.021 inches. Knuckle in each roll is 0.1 They are arranged vertically with a knuckle spacing of 44 inches, and adjacent knuckles are The distance between the knurls 211 along a line at 45 degrees to the longitudinal direction of the roll is 0. Trace h in the horizontal direction of the roll so that it is 11 inches. The resulting laminated wipe has the following properties and a lateral wet tensile strength (oz/y). inch) 71.5 42.7 Longitudinal wet tensile (oz/inch) ---99,2 Total tear test (g-cIrL) 537 432 Mullen burst test, dry (ps Engineering) 31.6 23.5 Bending rigidity 941.2 27.5 Taper wear test, drying (rotation speed) 245 106 tsubo weight (bond/2880 tsubo 88.8 88.5 The entire tear test procedure is TAPPI T414t It is described in S-65.

The Mullen burst test procedure is described in TAPPI T40 Os-76. There is.

Mazeoka 1] properties are measured according to ASTM D1388-75 Volume 62 .

Taper wear test is ASTM 1175, rotary platform, double head. Section 41. , A-inch diameter failure point.

Example 2 Example 2 is a "SELEX" spa in which the reinforcing layer has a basis weight of 0.4 ounces/square yard. The wiping material was prepared in the same manner as in Example 1, except that it was a bonded nylon web. It is a powerful wiping material.

The resulting laminated wipe has the following properties: CD wet tensile (oz/in) H) 74.0 54.7MD wet tensile (oz/inch) -117,2 full tension Rupture test (g-cfrL) 564 515.2 Mullen burst test, dry (ps i) 32.5 23.5 Bending rigidity 828.3 614 Taper test, drying (rotation speed) 292 107 tsubo weight (bond/2880 ft. E)) 89.9 91.2 Example 6 In this example, the knuckle overlap in the barfu embossing process was reduced to 0. Example 2 except that the mechanical softening of the laminated wipe was reduced to 0.011 inches. This is a strong wiping material made using the same method.

The resulting laminated wipe has the following properties: CD wet tensile (oz/in) H) 74.7 67.3MD wet tensile (oz/inch)---126 full tension Rupture Test (g-cIrL) 628 572 Mullen Rupture Test, Dry (psi) 31.6 34.7 Bending rigidity 1194.6 552.9 Taper test, drying (rotation speed) 269 156 tsubo weight (bond/2880 sq. ft. Eat) 91.5 91.6 Example 4 Example 40 base sheet increases basis weight to nominal 45 oz/2880 square feet Basically the same method and the same method as for the base web of Examples 1, 2 and 6 except that Manufactured on the same paper machine. Other named physical properties of this base web are as follows: is: Bulk: 270 mil/24 sheets MD tensile 280 oz/inch MD growth 6% CD tensile 17 oz/inch Both surfaces of this base web material were coated with a gravure roll pattern with a thickness of 9.4 to 1 Examples 1 and 2 except that the line depth is 1°7 mils and the line depth is 68-94 microns. and 3 are bonded and creped in the same manner as the base web materials. Conclusion The combined and creped base web has a nominal basis weight of 57 lb/2880 sq.ft. After the second creping process, this treated base material The method, adhesive type and Depending on the amount of elasticity, it is glued to the "SELETEX" web with a basis weight of 0.4 oz/dry yard. Ru. The laminated web structure was then parfouled in the same manner as in Example 1. It becomes mechanically flexible by doing so. The resulting laminated wipe material has the following characteristics: have sex.

CD Wet Tensile (oz/in) 72.4 43.8 MD Wet Tensile (oz/in) inch) - 111,9 total tear test (g-cm) 458 358 muren rupture Test, dry (psi) 29.5 26.6 Bending stiffness 772.6 380.2 Taper test, drying (rotation speed) 151'102 grammage (lb/2880 square Feet) 68.6 69.9 Example 5 Prior to part-embossing the unreinforced surface of the laminate structure of Example 4, A second lamination process that is substantially the same as that used for bonded to a second reinforcing layer of spunbond nylon let This laminated structure was then coated with the same glue 7 as used for softening in Example 4. - Perform Ninbotsushing. The obtained laminated wipe has the following properties : CD Wet Tensile (oz/inch) 12 [], 3 84.72 MD Wet Tensile (Ounce) (g-cm) -197.9 Total tear test (g-cm) 883 742.4 Müllen burst test, dry (psi) 54.1 45.9 Bending stiffness 2901 1846 Taper test, drying (rotation speed) 344 179 tsubo weight (lb/2880 sq. ft. Eat) 84.2 85.1-15υ,! international search report

Claims (1)

[Claims] 1. (a) Consisting of fibers having a principal length of less than “A inch” and containing fine particles therein. It has a binder treated in a spaced pattern, and the binder treated area is finely creped. strong surface area; (1)) Consisting of fibers with a predominant length of 3/4 inch and generally strong human face area an inner core region with lower fiber concentration; (C) A fiber that is more cylindrical than the inner core region, consisting of fibers with a main length less than a switch. It has a high density and has fine and coarse spacing patterns in it to bond the fibers into a strong network structure. A second strong region having a binder treated in a turn shape, provided that the binder in the second strong region is substantially not connected to the thickening agent in the strong surface region and in the first strong surface region and the second strong surface region. Many of the fibers in the adjacent inner core region are separated by either a compound or a binder. connected to fibers in the first strong surface region or the second strong surface region: and ((L) Approximately 16 on/in, measured in any direction, attached to the outer surface of the second strong region has a minimum wet tensile strength of A multilayer wiping material consisting of a web of non-woven fibrous material and a reinforcing layer. 2. Further (a) consists of fibers having a principal length of less than H inches and the fibers are joined together; It has a binder processed in a finely spaced pattern to create a strong network structure. 3rd strong area; (’b) consisting of fibers having a predominant length of less than % inches and generally less than the third strength region; a second inner core region having a low fiber concentration: and (C) A fiber with a main length of 1 inch and a fine interval within it. The binder treated in a pattern is finely creped. However, the binder in the second strong thorny area is the binder in the sixth strong area of the fiber. a second internal core not generally connected to the mixture and adjacent to the second strong surface region and the sixth strong region; Many of the ki and fibers in the area are formed in the second strong surface area by either paper binding or adhesive. connected to fibers in the region or in the sixth strong region; A multilayer wipe according to claim 1, characterized in that: 6. Further (a) about 16 ounces, measured in any direction, coupled to the outer surface of the first strong region; /in. and has a minimum wet tensile strength of 0.02 in. A second reinforcing layer comprising: a web of fibrous material having no Multi-layer wipes. 4. The binder on the surface of the second strong region adjacent to the reinforcing layer is finely creped. The multilayer wipe of claim 1. 5. The binder on the outer surface of the strong surface area is about 15 to about 60 of the surface area of the wipe. %. 6. The binder in the second strong region occupies about 15 to about 60% of the surface area of the wiping material. The multi-layer wipe of claim 1, wherein the wipe comprises: Z　The binder in the second strong region occupies about 15 to about 60% of the surface area of the wiping material. 6. The multilayer wipe of claim 5. 8. The binder on the surface of the second strong region adjacent to the reinforcing layer is finely creped. 7. The multilayer wipe of claim 6. 9. The binder on the outer surface of the strong surface area is about 15 to about 60 of the surface area of the wipe. 9. The multilayer wipe of claim 6 or claim 8, comprising %. 10. The binder in the second strong region occupies about 15 to about 60% of the surface area of the wipe. 7. The multilayer wiping material of claim 6, comprising: 11. The binder in the second strong region accounts for about 15 to about 60% of the surface area of the wiping material. 10. The multilayer wipe of claim 9. 12. The binder on the surface of the second and sixth strong regions adjacent to the reinforcing layer is finely cracked. 3. The multilayer wipe of claim 2, which is raped. 16. Wipe the bonding agent on the outer surface of both strong surface areas and cover approximately 1 of the surface area of the stock. 5 to about 60% of the multilayer wipe of claim 2 or 12. . ゛14. The binder in the second and sixth strong regions is about 15 to 15% of the surface area of the wipe. The multilayer wipe of claim 2 comprising about 60%. 15. The binder in the second and third strong regions covers about 15 to about 150% of the surface area of the wipe. 17. The multilayer wipe of claim 16, comprising 60%. 16. (a) On one side of a web consisting of fibers having an unbroken length of % inches applying a binder to penetrate about 10% to about 60% of the web; (bJ 5 finely spaced patterns that grip about 15 to about 60% of the surface area on the other side of the web) Penetrate the binder from about 10% to about 60% into the web thickness, with the binder on one side and applied in a substantially non-contiguous manner. (CJ: Place the bonded part on the other side of the web in close contact with the creping surface and crepe the web from the pinging surface; and (d) Approximately 16 ounces per ounce measured in any direction on the surface of said one side of the web. inch minimum wet tensile strength and substantially pores larger than 0.02 inches square. The process of bonding a reinforcing web of fibrous material that does not have Production method. 1Z Additionally, on the surface of the other side of the web, approximately 16 oz. measured in any direction. /in. minimum wet tensile strength and substantially pores larger than 0.02 in. Claims characterized by the step of adhering a second reinforcing web of fibrous material that does not have 16. A method for manufacturing a multilayer wipe according to paragraph 16. 18, further (a) for a second web of fibers having a main length less than a switch; Repeat (b) and (C): (b) Add the reinforcing web to one side of the second wafer. 17. The method for producing a multilayer wiping material according to claim 16, characterized by the step of adhering to a wiping material. 19. Furthermore, the bonded part on one side of the web is brought into close contact with the creping surface. Claim 16, characterized by the step of forming a web from the creping surface. Method for manufacturing multilayer wipes. 20. Claims further characterized by mechanically softening the multilayer wipe. The method for producing a multilayer wiping material according to item 16 or 19. 21. The mechanical softening process involves barfu embossing the multilayer wipe. A method for manufacturing a multilayer wiping material according to claim 20, which is carried out accordingly. 22, on the surface of the other side of the web, approximately 16 ounces measured in any direction. /inch minimum wet tensile strength and with holes larger than 0.02 square inches. Claims characterized by a step of adhering a second reinforcing weg of a fiber material that does not have A method for manufacturing a multilayer wipe according to paragraph 19. 26. Claims further comprising the step of mechanically softening the multilayer wipe. The method for producing a multilayer wiping material according to item 17 or item 22. 24. The mechanical softening process involves perfusing the multilayer wipe. A method of manufacturing a multilayer wipe according to claim 23, carried out accordingly. 25.Furthermore, (a) Step (a) for a second uezzo of fibers having a principal length of less than Vi inches ), (b) and (C); (1)) Joining process on one side of the second web Crepe the web from the creping surface by keeping the web in close contact with the creping surface. Se; and (C) A request characterized by the step of adhering the above-mentioned one side of the second web to the reinforcing web. A method for producing a multilayer wiping material according to Item 19. 26. Claims further comprising the step of mechanically softening the multilayer wipe. The method for manufacturing a multilayer wiping material according to item 18 or 25. 2Z Mechanical softening process involves parfum embossing of multilayer wipes A method for manufacturing a multilayer wipe according to claim 21, carried out accordingly.