MXPA06002323A

MXPA06002323A - Mutli-ply products comprising a consumer accessible tab.

Info

Publication number: MXPA06002323A
Application number: MXPA06002323A
Authority: MX
Inventors: Wesley Bernard Brokopp Jr
Original assignee: Procter & Gamble
Priority date: 2003-09-17
Filing date: 2004-09-10
Publication date: 2006-05-22
Also published as: EP1663831B1; ATE465110T1; CN1852849A; CA2539508A1; JP2007502764A; DE602004026744D1; WO2005028350A1; CA2539508C; US20050058752A1; EP1663831A1; AU2004274425A1

Abstract

Multi-ply products, especially rolled multi-ply product, more particularly rolled multi-ply sanitary tissue products, comprising a consumer accessible tab and methods for making same are provided.

Description

PRODUCTS OF MULTIPLE LEAVES THAT INCLUDE A PRACTICAL TAB FOR THE CONSUMER FIELD OF THE INVENTION The present invention relates to multi-leaf products, especially to multi-leaf rolled products, and more specifically to multi-leaf wound medical devices comprising a practical tab for the consumer and methods for their manufacture.

BACKGROUND OF THE INVENTION Multi-sheet products, especially rolled ones and specifically rolled multi-sheet health products such as toilet paper, conventionally presented a problem for the consumer when he was trying to find the initial end of the product or dispatch it during use without damaging it. The problem of damage to the multi-sheet product, especially when rolled, is evident in conventional multi-sheet rolled paper toilet products. For example, a consumer may attempt to dispense a rolled product of double sheet toilet paper by accidentally taking only the outer sheet of the product thereby causing the separation of the two sheets. As a result, the consumer dispatches only one of the sheets of the product thus creating drawbacks in the alignment of the canvases of the product. This problem associated with multi-sheet products, especially multi-leaf wound medical products, is called "leafless".

Consequently, there is a need to have a multi-sheet product, especially a multi-sheet health product, more specifically a multi-leafed health product that avoids or mitigates the risk of a consumer defoliating the product by dispensing fewer sheets than the consumer. contained in the product.

BRIEF DESCRIPTION OF THE INVENTION The present invention meets the need described by providing a multi-sheet product with a practical tab for the consumer. In one aspect of the present invention there is provided a multi-sheet product comprising a fibrous multi-sheet structure with a tail end and a core end, wherein the end of the tail comprises a practical tab for the consumer. In another aspect of the present invention there is provided a multi-sheet rolled product comprising a fibrous multi-leaf structure with a tail end and a core end, wherein that structure is wound loosely on itself from the end of the core towards the tail end to form the product of multiple rolled sheets wherein the tail end of the structure comprises a practical tab for the consumer. In another aspect of the present invention there is provided a method for making a practical consumer tab for use in a multi-sheet product comprising a multi-sheet fibrous structure. In another aspect of the present invention there is provided a method for making a multi-sheet product comprising a fibrous multi-sheet structure in which the product comprises a practical tab for the consumer. In another aspect of the present invention there is provided a method for making a multi-sheet rolled product comprising a multi-leaf fibrous structure in which the multi-rolled product comprises a practical tab for the consumer. Accordingly, the present invention provides a multi-sheet product comprising a practical tab for the consumer, a rolled multi-sheet product comprising a practical tab for the consumer, a method for making a pragmatic pouch for the usable consumer in a multi-sheet product, a method for making a multi-sheet product comprising a practical tab for the consumer and a method for making a multi-sheet rolled product comprising a practical tab for the consumer.

BRIEF DESCRIPTION OF THE FIGURES Figure 1A is a schematic top plan view of a multi-sheet product embodiment in accordance with the present invention; Figure 1B is a schematic side view in cross section along line 1 B-1 B of the multi-sheet product of Figure 1A; Figure 1C is a schematic view of the rolled multi-sheet product of Figure 1B; Figure 2A is a schematic top plan view of another embodiment of a multi-sheet product in accordance with the present invention; Figure 2B is a schematic side view in cross section along the line 2B-2B of the multi-sheet product of Figure 2A; Figure 2C is a schematic view of the rolled multi-sheet product of Figure 2B; Figure 3 is a schematic representation of a method for making a multi-sheet product in accordance with the present invention; Figure 4 is a partial schematic representation of a method for making a product, of multiple sheets rolled in accordance with the present invention.

DETAILED DESCRIPTION OF THE INVENTION Definitions "Fiber" as used herein means an elongated particle having an apparent length that far exceeds its apparent width, i.e., a length-to-diameter ratio of at least about 10. More specifically, as used in the present, "fiber" refers to fibers for the manufacture of paper. The present invention considers the use of various paper fibers, for example natural or synthetic fibers or any other suitable fiber and any combination thereof. Useful paper fibers in the present invention include cellulosic fibers, known as wood pulp fibers. Some useful wood pulps herein are chemical pulps, for example, Kraft, sulphite and sulfate pulps, as well as mechanical pulps which include, for example, crushed wood, thermomechanical pulps and chemically modified thermomechanical pulps. However, chemical pulps are preferred because they impart a greater sensation of softness to the touch in the fabric canvases made with them. Pulps derived from deciduous trees (hereinafter referred to as "hardwood") and conifers (hereinafter referred to as "hardwood") can be used. Hardwood and softwood fibers may be blended or, alternatively, may be deposited in layers to provide a stratified web. U.S. Pat. num. 4,300,981 and 3,994,771 are incorporated herein by reference for the purpose of exposing the stratified formation of hardwood and softwood fibers. Also useful are fibers derived from recycled paper which may contain one or all of the mentioned fiber categories and other non-fibrous materials such as fillers and adhesives used to facilitate the original papermaking process. In addition to the above-mentioned, fibers or filaments made from polymers, specifically hydroxyl polymers, can be used in the present invention. Non-limiting examples of suitable hydroxyl polymers include polyvinyl alcohol, starch, starch derivatives, chitosan, chitosan derivatives, cellulose derivatives, gums, arabanas, galactans and mixtures thereof. As used herein, "practical tab for the consumer" refers to a part of the multi-leaf fibrous structure located near the tail end, practice for a consumer using a multi-leaf product not previously used (i.e., fully new). As used herein, "coils" refers to the material being rolled or folded together with one part on another without being joined. In other words, it does not contain adhesive to join one part superposed to another on the roll. As used herein, "tissue product" refers to a weft containing fibers useful as a cleaning implement for post-urination or defecation hygiene (toilet paper), for otorhinolaryngological secretions (disposable handkerchief), and for absorbent uses and multifunctional cleaners (absorbent towels). 6"Weight average molecular weight", as used herein, means the weighted average molecular weight as determined using gel permeation chromatography according to the protocol found in Colloids and Surfaces A. (Colloids and surfaces A.) Physico Chemical &; Engineering Aspects, volume 162, 2000, pages 107-121. "Machine direction" or "DM" as used herein means the direction parallel to the flow of the fibrous structure through the paper making machine and / or the equipment to manufacture the product. "Cross direction of the machine" or "DT" as used herein means the direction perpendicular to the machine direction in the same plane of the fibrous structure and / or the paper product comprising the fibrous structure. As used herein, "sheet" or "sheets" refers to an individual fibrous structure which optionally can be arranged in a substantially contiguous, frontal relationship with other sheets, forming a multi-leaf fibrous structure. It is also considered that a single fibrous structure can efficiently form two "sheets" or multiple "sheets", for example, by folding on itself. "Base weight" as used herein is the weight per unit area of a sample reported in pounds / 3000 ft2 or g / m2. The basis weight is measured by preparing one or more samples of a given area (m2) and weighing the samples of a fibrous structure according to the present invention or a paper product comprising that fibrous structure on a top loading scale with a resolution minimum of 0.01 g. The balance is protected from drafts and other alterations by means of a protective shield. The weight is recorded when the readings on the balance become constant. The weight (g) and the average surface area of the samples (m2) are calculated. The basis weight (g / m2) is calculated by dividing the average weight (g) by the average surface area of the samples (m2).

The fibrous structure The fibrous structure can be shortened, such as by creping; or it may not be shortened, such as without the creping application. The fibrous structures of the present invention are useful in paper, especially in sanitary tissue products including, but not limited to: conventionally pressed felt tissue paper, air-dried tissue, densified tissue paper with pattern and tissue paper non-compact high volume. The tissue paper can be homogenous or multilayer and the tissue paper products according to the present invention are multi-sheet. The tissue paper preferably has a basis weight of about 10 g / m2 to about 120 g / m2 and a density of about 0.60 g / cc or less. Preferably, the basis weight will be less than about 35 g / m2 and the density will be about 0.30 g / cc or less. Most preferably, the approximate density will be between 0.04 g / cc and 0.20 g / cc measured with the base weight method described herein. The fibrous structure can be made from a fibrous supply that produces a single-layer embryonic fibrous web or a fibrous supply that produces a multi-layered embryonic fibrous web.

Multi-leaf product The multi-leaf product consists of a multi-leaf fibrous structure (ie, two or more leaves). The multi-sheet product can be rolled up resulting in a multi-sheet rolled product. In one embodiment of the present invention, as shown in 8 Figures 1A-C, the multi-sheet product 10 'of the present invention comprises a multi-leaf fibrous structure 10 having a first sheet 20 and a second sheet 22. The multiple sheets of the fibrous structure 10 can be joined facing one another. Suitable means known to persons of ordinary skill in the industry such as mechanical, chemical or electrostatic forces. TypicallyTo join the multiple sheets a bonding adhesive is used. The bonding adhesive is typically applied on at least one surface of at least one sheet that will be in contact with one or more surfaces of other sheets. In addition, the bonding adhesive is typically applied in the machine direction. The multi-leaf fibrous structure 10 comprises a core end 12 and a tail 14 comprising a tail end 16. As shown in Figure 1C, the multi-leaf fibrous structure 10 may be a multi-leaf product 10 'rolled up . To make this product 10 ', the multi-leaf fibrous structure 10 can be wrapped freely by winding from the core end 12 towards the tail end 16 around the core 24. In another embodiment, the multi-leaf fibrous structure 10 can be rolled up without using a core (not shown). The tail end 16 of the multi-leaf fibrous structure 10 comprises a practical tab for the consumer 18 which allows it to start dispensing a multi-leaf product not previously used, especially a multiple sheet product 10 'taking the practical tab for the consumer 18 and dispensing the multi-sheet product such as the multi-rolled product 10 '. In one embodiment, the consumer tab 18 can comprise two or more sheets of fibrous structure joined by means of an adhesive. The adhesive can be applied in the machine direction or in the transverse direction to the machine, preferably at least in the transverse direction to the machine. Any suitable adhesive can be used to form the practical tab for the consumer. Non-limiting examples of suitable adhesives, especially water-soluble polymer adhesives are distributed by Henkel Adhesives, National Starch and Chemical Company and HB Fuller. A non-restrictive example of a suitable water-soluble polymer adhesive distributed by National Starch is 18-345B. In one embodiment, the adhesive only joins the two or more sheets of the fibrous structure that make up the practical tab for the consumer 18 without passing through the sheets of the tab to other sheets of the fibrous structure that are not part of the tab 18. Particularly, this happens when the fibrous structure of multiple sheets 10 is rolled up. Stated another way, the adhesive used in the practical consumer tongue 18 preferably does not attach the tongue 18 to another portion of the multi-leaf fibrous structure 10. The practical tongue for the consumer 18 can extend from the tail end 16 or near it to the core end 12 along the multi-leaf fibrous structure 10 in the machine direction. In one embodiment, the consumer practical tongue 18 extends from or near the tail end 16 towards the core end 12 along the multi-leaf fibrous structure 10 in the machine direction by an approximate distance of 2 cm to about 15 cm, preferably from about 3 cm to about 10 cm and / or from about 4 cm to about 8 cm. However, the practical tab for the consumer 18 can extend a greater or lesser distance from the tail end 16 or approximately close to it. The practical tab for the consumer 18 may extend completely or partially through the fibrous structure of multiple sheets 10 in the direction 10. transversal to the machine. The multi-rolled product 10 'can comprise a tail seal glue 21 which joins the glue 14 of the multi-leaf fibrous structure, 10 when it is wound on itself, with another portion of the multi-leaf product 10. In one embodiment, the practical tab for the consumer 18 or any portion thereof is closer to the tail end 16 of the multi-rolled product 10 'than is the tail glue of the tail 21. As illustrated in Figures 2A-C, the multi-sheet product 10"'of the present invention comprises a multi-leaf fibrous structure 10" having a first sheet 20"and a second sheet 22". The multiple sheets of the fibrous structure 0"may be bonded to one another by a suitable means known to persons of ordinary skill in the industry such as mechanical, chemical or electrostatic forces. A bonding adhesive The bonding adhesive is typically applied to at least one surface of at least one sheet that will be in contact with one or more surfaces of other sheets.In addition, the bonding adhesive is typically applied in the machine direction The multi-leaf fibrous structure 10"comprises a core end 12" and a tail 14"comprising a tail end 16." As shown in Figure 2C, the multi-leaf fibrous structure 10"may be a product. of multi-rolled sheets 10"'In order to make this product 10"', the multi-leaf fibrous structure 10"can be wrapped freely by winding from the core end 12" the tail end 16"around the core 24". The tail end 16"of the multi-leaf fibrous structure 10" comprises a practical tab for the consumer 18"which allows it to start dispensing a roll of product 11. of multiple rolled sheets not previously used 10"'taking the practical tab for the consumer 18" and dispensing the product of multiple sheets such as the product of multiple rolled sheets 10"' In one embodiment, the practical tab for the consumer 18" it can comprise two or more sheets of fibrous structure joined by means of an adhesive. The adhesive can be applied in the machine direction or in the transverse direction to the machine, preferably at least in the transverse direction to the machine. Any suitable adhesive can be used to form the practical tab for the consumer 18. Any suitable adhesive can be used to form the practical tab for consumer 18. Non-limiting examples of suitable adhesives, especially water-soluble polymer adhesives are distributed by Henkel Adhesives, National Starch and Chemical Company and HB Fuller A non-restrictive example of a suitable water-soluble polymer adhesive distributed by National Starch is 18-345 B. In one embodiment, the adhesive only binds the sheets of the fibrous structure, two or more, which make up the practical tab for the consumer 18"without passing through the leaves of the tongue to other sheets of the fibrous structure that are not part of the tongue 18." Particularly, this happens when the fibrous structure of multiple 10"sheets is rolled up. Stated another way, the adhesive used in the practical consumer tongue 18"preferably does not attach the tongue 18" to another portion of the multi-leaf fibrous structure 10. "The practical tab for the consumer 18" can extend from the end of tail 16"or near it to the core end 12" along the fibrous structure of multiple holes 1 0"in the machine direction In one embodiment, the practical tab for the consumer 18" extends from the tail end 16"or close to the end of the core 12" along the multi-leaf fibrous structure 10"in the machine direction by a distance of about 2 cm to about 15 cm, preferably from about 3 cm to about 10 cm and / or from about 4 cm to about 8 cm. However, the practical tab for the consumer 18"may extend a greater or lesser distance from the tail end 16" or approximately close to it. The practical tab for the consumer 18"may extend completely or partially through the fibrous structure of multiple sheets 0" in the direction transverse to the machine. The product of multiple rolled sheets 10"'may comprise a glue seal glue 21" which produces the joining of the glue 14"of the multilayer fibrous structure 10" rolled up, to itself or to another portion of the structure 10" In one embodiment, the practical tab for the consumer 18"or any portion thereof is closer to the tail end 6" of the multi-rolled product 10"'than is the tail glue of the tail 21" Furthermore, as shown in Figures 2A-C, the core end 12"may comprise a bonded area similar to the tongue 18." In one embodiment, the adhesive used on the tongue is more concentrated than the adhesive used to bond. the leaves through the multi-leaf fibrous structure In another embodiment, the strength of the bond in the tongue is greater than the strength of the binding of the leaves through the multi-leaf fibrous structure.

Methods The multi-sheet product of the present invention can be made by any suitable process known to persons of skill in the art. technique. In n a p resent, a n or restrictive example of a suitable process is written to produce a multi-sheet product with a practical tab for the consumer. As shown in Figure 3, during the process of making a multi-leaf fibrous structure 29 according to the present invention two or more main rollers can be unwound, in this case the main roller 26 and the main roller 28, each of which contains its respective fibrous structure 26 'and 28'. The two sheets of fibrous structure 26 'and 28' may be joined together by any suitable means known to persons of ordinary skill in the industry. In one embodiment, at least one surface of at least one of the sheets of fibrous structure, in this case the surface of the fibrous structure sheet 28 'may contain an adhesive 32 placed by means of an adhesive applicator 30. Preferably, the adhesive 32 extends through the surface of the fibrous structure 28 'in the direction transverse to the machine. On the surface of the fibrous structure sheet 28 'a sufficient amount of the adhesive 32 is applied to provide a practical tab for the consumer 34"in the end product of multiple sheets, such as the product of multiple rolled sheets 29'. In this embodiment, the adhesive 32 is applied to the fibrous structure 28 'in the transverse direction to the machine to form an adhesive area 34. Once the adhesive area 34 is formed, the fibrous structure sheets 26' and 28 'may be combined by any suitable means known to persons of ordinary skill in the industry A non-restrictive example of a suitable means for combining the sheets consists of passing the two sheets through a roller system of 14 coupling / combination roller comprising the roller 36 and the roller 38. When the two sheets 26 'and 28' were combined to form a fibrous multi-leaf structure 29, this structure is cut in the cross-machine direction in the area adhesive 34 by any suitable method, such as a cutting device 40, so that a cut piece of the multi-leaf fibrous structure 29 'is formed. As a result, the adhesive area 34 is divided into two distinct portions 34 'and 34. Alternatively, the adhesive area 34 may be on only one side of the dividing line As shown in Figure 4, the divided piece of fibrous structure The plurality of sheets 29 'which includes the adhesive portion 34"can be wound back on a core 42 or on itself in case a core is not used simultaneously or after the cutting operation. By rewinding the divided pieces of multi-leaf fibrous structure 29 'on the core 42, the divided piece of fibrous multi-leaf structure 29' comprises a glue 44 that includes a tail end 46. The glue 44 comprises the adhesive portion 34"(precursor of the practical tab for the consumer) which finally forms the tab on the multi-sheet product once the divided piece of fibrous multi-leaf structure 29 'was completely rewound around the core 42. The multi-leaf fibrous structure uncut 29 can be joined to a different core by its core end 48 to begin rewinding the next split piece of multi-leaf fibrous structure The uncut multi-leaf fibrous structure 29 comprises a portion of adhesive 34 'extending from the core end 48 along the uncut fibrous multi-leaf structure 29.

Claims

fifteen CLAIMS

1. A multi-leaf product comprising a multi-leaf fibrous structure with a core end and a tail with one end, characterized in that the glue of the multi-leaf fibrous structure comprises a practical tab for the consumer.

2. The multi-sheet product according to claim 1, further characterized in that the multi-leaf fibrous structure is wrapped freely by winding from the core end towards the tail end to form a multi-sheet rolled product, preferably where the tail of the fibrous structure is sealed to the structure by means of a tail seal glue, more preferably wherein at least a portion of the tongue is closer to the tail end of the multi-leaf fibrous structure than what There is the tail glue of the tail.

3. The multi-sheet product according to any of the preceding claims, further characterized in that the practical tab for the consumer comprises at least two sheets of the fibrous structure of multiple sheets joined, preferably wherein said sheets are joined in the direction transversal to the machine.

4. The multi-sheet product according to claim 3, further characterized in that at least two of the sheets of the multi-leaf fibrous structure are joined by mechanical, chemical or electrostatic forces, preferably chemical forces by means of an adhesive.

5. The multi-sheet product according to any of the preceding claims, further characterized in that the practical tab for the 16 The consumer extends from the tail end of the fibrous structure of multiple sheets along it towards the core end.

6. The multi-sheet product according to any of the preceding claims, further characterized in that the practical tab for the consumer extends from the tail end of the multilayer fibrous structure along it towards the core end.

7. The multi-sheet product according to any of the preceding claims, further characterized in that the multi-sheet fibrous structure consists of two sheets of a fibrous structure.

8. The multi-sheet product according to any of the preceding claims, further characterized in that the multi-sheet product comprises a sanitary paper product. A method for making a multi-sheet product according to any of the preceding claims, characterized in that the multi-sheet product comprises a practical tab for the consumer; The method includes the steps of: a. Provide two or more holes of a f ree structure, where each of them comprises a tail end and a core end; b. joining the two or more sheets of the fibrous structure to their respective tail ends or near them facing each other, so as to form a practical tongue precursor for the consumer; c. joining the two or more sheets of the fibrous structure from the tail end to the core end to form a multi-leaf fibrous structure; and 17 d. dividing the fibrous structure of multiple sheets in the transverse direction to the machine so that a portion of the practical tab precursor for the consumer is on one side of the dividing line or on both. 10. Use of a practical tab for the consumer in a multi-sheet product according to any of claims 1 to 8.