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US3271228A - Remoistenable adhesive sheet - Google Patents

Remoistenable adhesive sheet Download PDF

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Publication number
US3271228A
US3271228A US315832A US31583263A US3271228A US 3271228 A US3271228 A US 3271228A US 315832 A US315832 A US 315832A US 31583263 A US31583263 A US 31583263A US 3271228 A US3271228 A US 3271228A
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layer
adhesive
fibrous layer
sheet
fibrous
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US315832A
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Robert S Ives
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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
    • C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
    • C09J7/32—Water-activated adhesive, e.g. for gummed paper
    • 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
    • C09J7/21—Paper; Textile fabrics
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer

Definitions

  • This invention relates to adhesive tapes, labels and the like sheets and particularly to a nonblocking flexible sheet whose adhesive may be reactivated as contrasted with sheets whose adhesive is pressure sensitive.
  • remoistenable labels and tapes whose adhesive is water soluble, animal glue, although among the oldest adhesive sheets, yare still among the most widely used.
  • remoistenable adhesive has an inherent disadvantage. Without an added plasticizer, the adhesive and the supporting base on which it is coated, are sti and crackly and therefore deteriorate when bent or warped in use or when stored in a roll and also must go through a breaking operation to prevent curling.
  • a plasticizer is added to the adhesive to make it more pliable, superimposed sheets or turns, Will, after a short time, block or stick to each other. Flexibility and tackiness are concomitant; if the desirable fiexibility is present, so is the unwanted tendency to block. Blocking may be avoided by covering the adhesive with a waxy release sheet but such is not the purpose of the present invention.
  • the object of this invention is to provide an adhesive sheet of the type which is both liexible and nonblocking, but which is easily reactivated as by moistening for use.
  • an adhesive sheet comprises a liexible base web, a layer of reactivatable adhesive on the base, said adhesive being in tacky, flexible state, and a thin, flexible fibrous layer at least partially covering said adhesive layer, the inner side of said fibrous layer being permanently imbedded in said adhesive layer, said adhesive layer extending only partially toward the outer side of said fibrous layer, said adhesive layer being readily reactivated through said fibrous layer and said fibrous layer being readily penetrated by reactivated adhesive from the inside to the outside of said fibrous layer, ⁇ whereby said -brous layer prevents blocking of a plurality of said sheets when stored in superposition, while permitting said adhesive layer to be easily reactivated for adhering a sheet to a surface.
  • FIG. l is a plan view, partly broken away, of an adhesive sheet according to the invention.
  • FIG. 2 is an enlarged section on line 2 2 of FIG. l;
  • FIG. 3 is a side elevation of a roll of adhesive tape embodying a variation of the invention.
  • FIG. 4 is an enlarged section on line 4-4 of FIG. 3;
  • FIG. 5 is an isometric view of an envelope made with adhesive sheet according to the invention.
  • FIG. 6 is an enlarged section on line 6 6 of FIG. 5.
  • an adhesive sheet comprises a supporting base web 1 of heavy, calendered kraft paper to which a layer 2 of hide glue formulation is adhered.
  • Adhered to the glue layer is a thin, fibrous sheet 3 such as tissue paper partly imbedded in the glue.
  • the fibrous layer is preferably the thinnest, most open sheet such as single ply facial or toilet tissue but may 'be a flocked or nonwoven fabric layer.
  • the fibrous layer is easily wettable and penetrable by water or an aqueous solution.
  • the adhesive layer When dried the adhesive layer is maintained soft and flexible by the glycerine and sorbitol as plasticizers. As previously stated, flexibility is accompanied by tackiness. However, the thin layer of tissue guards the tacky glue layer so that the sheeting, which is flexible as a whole, may be handled, stacked or rolled dry without sticking o1' blocking.
  • the fibrous layer is moistened in the conventional way, the moisture readily penetrating the fibrous layer so ⁇ as to dissolve the blue which then migrates back through the fibrous layer over the exterior of the fibrous layer.
  • the fibers of this layer remain substantially embedded in the glue layer, but because of their thin open character do not interfere appreciably with the adhesion of the glue on the surface to which the sheet is applied.
  • the usual sight pressure applied aids the dissolved glue in migrating through the fibrous layer.
  • the adhesive sheet described thus has a quality of softness and flexibility commensurate with the supporting base, will not block during long storage under humid conditions, and is easily remoistened for use in a conventional way.
  • the adhesive sheet may be wound in a roll as shown in FIGS. 3 and 4 without blocking of adjacent base webs 1 and fibrous layers 3. Migration can be aided by impregnating the fibrous layer, preferably before adhering it to the glue layer, with a wetting agent 5 such as Rohm and Haas Triton X-lOO, an octyl phenoxy polyethoxy ethanol with an average polyoxyethylene chain length of 9 to 10.
  • a wetting agent 5 such as Rohm and Haas Triton X-lOO, an octyl phenoxy polyethoxy ethanol with an average polyoxyethylene chain length of 9 to 10.
  • Adhesive sheet according to the invention may be used to particular advantage in making an envelope such as is illustrated in FIG. 5.
  • the envelope 6 comprises two plies 7 of adhesive sheet joined by a glue bond 8 at three sides.
  • Such an envelope made with plies having an integral glue layer is temporarily waterproof when immersed in an aqueous solution, for example, when used as a mitten to protect the users hand while cleaning a household bowl. After use the mitten is discharged in the bowl ⁇ and softens and disintegrates.
  • My invention is not the mitten as so far described, but rather is the following mitten structure.
  • the individual plies 7 of the envelope are formed of a sheet 9 of rough fibrous paper such as paper hand towels bonded to a tissue sheet 11 by a slowly water soluble, and temporarily waterproof glue layer 11.
  • the sheet is formed as previously described with reference to FIGS. l to 4.
  • the bond 8 is formed at the edges of the envelope by softening the gummed layer and pressing the edges together.
  • a remoistenable adhesive sheet comprising a flexible base web, a layer of water soluble adhesive on the base, said-adhesive being in tacky, flexible state, and a thin, .ilexible brous layer at least partially covering said adhesive layer, the inner side of said fibrous layer being imbedded in said adhesive layer, said adhesive layer extending only partially toward the outer side of said iibrous layer, and said brous layer being readily penetrable by softened adhesive from the inside to the outside of said -brous layer, whereby said fibrous layer prevents blocking of a plurality of said sheets when stored in superposition, while permitting said adhesive layer to be easily activated for adhering a sheet to a surface.
  • a remoistenable adhesive sheet comprising a flexible base web, a layer of water soluble adhesive on the base, said adhesive being in tacky, flexible state, and a thin,

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Adhesive Tapes (AREA)

Description

Sept 6, 1966 R. s. lvEs 3,271,28
REMOISTENABLE ADHESIVE SHEET Filed oct. 14,1963
INVENTOR.
te States Patent 3,271,228 REMOISTENABLE ADHESIVE SHEET Robert S. Ives, Lexington, Mass., assgnor to Gurdon S. Worcester, Gloucester, Mass. Filed Oct. 14, 1963, Ser. No. 315,832 4 Claims. (Cl. 161-151) This invention relates to adhesive tapes, labels and the like sheets and particularly to a nonblocking flexible sheet whose adhesive may be reactivated as contrasted with sheets whose adhesive is pressure sensitive.
For example, remoistenable labels and tapes whose adhesive is water soluble, animal glue, although among the oldest adhesive sheets, yare still among the most widely used. Despite its long history, however, remoistenable adhesive has an inherent disadvantage. Without an added plasticizer, the adhesive and the supporting base on which it is coated, are sti and crackly and therefore deteriorate when bent or warped in use or when stored in a roll and also must go through a breaking operation to prevent curling. On the other hand, when a plasticizer is added to the adhesive to make it more pliable, superimposed sheets or turns, Will, after a short time, block or stick to each other. Flexibility and tackiness are concomitant; if the desirable fiexibility is present, so is the unwanted tendency to block. Blocking may be avoided by covering the adhesive with a waxy release sheet but such is not the purpose of the present invention.
The object of this invention is to provide an adhesive sheet of the type which is both liexible and nonblocking, but which is easily reactivated as by moistening for use.
According to the invention an adhesive sheet comprises a liexible base web, a layer of reactivatable adhesive on the base, said adhesive being in tacky, flexible state, and a thin, flexible fibrous layer at least partially covering said adhesive layer, the inner side of said fibrous layer being permanently imbedded in said adhesive layer, said adhesive layer extending only partially toward the outer side of said fibrous layer, said adhesive layer being readily reactivated through said fibrous layer and said fibrous layer being readily penetrated by reactivated adhesive from the inside to the outside of said fibrous layer, `whereby said -brous layer prevents blocking of a plurality of said sheets when stored in superposition, while permitting said adhesive layer to be easily reactivated for adhering a sheet to a surface.
For the purpose of illustration a typical embodiment of the invention is shown in the accompanying drawing in which FIG. l is a plan view, partly broken away, of an adhesive sheet according to the invention;
FIG. 2 is an enlarged section on line 2 2 of FIG. l;
FIG. 3 is a side elevation of a roll of adhesive tape embodying a variation of the invention;
FIG. 4 is an enlarged section on line 4-4 of FIG. 3;
FIG. 5 is an isometric view of an envelope made with adhesive sheet according to the invention; and
FIG. 6 is an enlarged section on line 6 6 of FIG. 5.
As shown in FIGS. 1 and 2 an adhesive sheet comprises a supporting base web 1 of heavy, calendered kraft paper to which a layer 2 of hide glue formulation is adhered. Adhered to the glue layer is a thin, fibrous sheet 3 such as tissue paper partly imbedded in the glue.
The fibrous layer is preferably the thinnest, most open sheet such as single ply facial or toilet tissue but may 'be a flocked or nonwoven fabric layer. The fibrous layer is easily wettable and penetrable by water or an aqueous solution.
3,271,228 Patented Sept. 6, 1966 An excess of the glue heated to F. is applied to the base sheet and spread to a thickness equivalent to the distribution by a standard No. 32 or 40 paper coating rod. The base sheet and fibrous layer are then forced together so that the libres at the inner side of the fibrous layer are imbedded in the blue layer but so that the glue does not extend to the outer surface of the fibrous layer. The adhesive sheet is then dried.
When dried the adhesive layer is maintained soft and flexible by the glycerine and sorbitol as plasticizers. As previously stated, flexibility is accompanied by tackiness. However, the thin layer of tissue guards the tacky glue layer so that the sheeting, which is flexible as a whole, may be handled, stacked or rolled dry without sticking o1' blocking.
For use the fibrous layer is moistened in the conventional way, the moisture readily penetrating the fibrous layer so `as to dissolve the blue which then migrates back through the fibrous layer over the exterior of the fibrous layer. The fibers of this layer remain substantially embedded in the glue layer, but because of their thin open character do not interfere appreciably with the adhesion of the glue on the surface to which the sheet is applied. The usual sight pressure applied aids the dissolved glue in migrating through the fibrous layer.
The adhesive sheet described thus has a quality of softness and flexibility commensurate with the supporting base, will not block during long storage under humid conditions, and is easily remoistened for use in a conventional way.
The adhesive sheet may be wound in a roll as shown in FIGS. 3 and 4 without blocking of adjacent base webs 1 and fibrous layers 3. Migration can be aided by impregnating the fibrous layer, preferably before adhering it to the glue layer, with a wetting agent 5 such as Rohm and Haas Triton X-lOO, an octyl phenoxy polyethoxy ethanol with an average polyoxyethylene chain length of 9 to 10.
Adhesive sheet according to the invention may be used to particular advantage in making an envelope such as is illustrated in FIG. 5. As illustrated the envelope 6 comprises two plies 7 of adhesive sheet joined by a glue bond 8 at three sides. Such an envelope made with plies having an integral glue layer is temporarily waterproof when immersed in an aqueous solution, for example, when used as a mitten to protect the users hand while cleaning a household bowl. After use the mitten is discharged in the bowl `and softens and disintegrates. My invention is not the mitten as so far described, but rather is the following mitten structure.
As shown in FIG. 6 the individual plies 7 of the envelope are formed of a sheet 9 of rough fibrous paper such as paper hand towels bonded to a tissue sheet 11 by a slowly water soluble, and temporarily waterproof glue layer 11. The sheet is formed as previously described with reference to FIGS. l to 4. The bond 8 is formed at the edges of the envelope by softening the gummed layer and pressing the edges together.
It should be understood that the present disclosure is for the purpose of illustration only and that this invention includes all modifications and equivalents which fall within the scope of the appended claims. For example, various quick setting, heat-activatable or water soluble adhesive materials, such as polyvinyl alcohol, may be used between the base web and fibrous layer.
I claim:
1. A remoistenable adhesive sheet comprising a flexible base web, a layer of water soluble adhesive on the base, said-adhesive being in tacky, flexible state, and a thin, .ilexible brous layer at least partially covering said adhesive layer, the inner side of said fibrous layer being imbedded in said adhesive layer, said adhesive layer extending only partially toward the outer side of said iibrous layer, and said brous layer being readily penetrable by softened adhesive from the inside to the outside of said -brous layer, whereby said fibrous layer prevents blocking of a plurality of said sheets when stored in superposition, while permitting said adhesive layer to be easily activated for adhering a sheet to a surface.
2. A remoistenable adhesive sheet according to claim 1 wherein said fibrous layer contains a wetting agent.
3. A remoistenable adhesive sheet according to claim 1 wherein the aforesaid base web is relatively water impenetrable.
I4. A remoistenable adhesive sheet comprising a flexible base web, a layer of water soluble adhesive on the base, said adhesive being in tacky, flexible state, and a thin,
flexible brous layer at least partially covering said adhesive layer, the inner side of said brous layer being permanently imbedded in said adhesive layer, said adhesive layer extending only partially toward the outer side of said fibrous layer, and said fibrous layer being readily penetrable by Water from its outer side `and by moistened adhesive from the inside to the outside of said brous layer, whereby said iibrous layer prevents blocking of a plurality of said sheets when stored in superposition, while permitting said adhesive layer to be easily moistened for adhering a sheet to a surface.
References Cited by the Examiner UNITED STATES PATENTS 709,326 9/1902 Howard 16l-229 X 1,101,029 `6/1914 yMagnaseo 161-229 2,353,762 7/1944 Robinson et al. 161--229 X 2,364,001 ll/1944 Schieman 161-151 2,737,179 3/1956 Dahle 161--159 X EARL M. BERGERT, Primary Examiner.
ALEXANDER WYMAN, Examiner.
M. SUSSMAN, Assistant Examiner.

Claims (1)

1. A REMOISTENABLE ADHESIVE SHEET COMPRISING A FLEXIBLE BASE WEB, A LAYER OF WATER SOLUBLE ADHESIVE ON THE BASE, SAID ADHESIVE BEING IN TACKY, FLEXIBLE STATE, AND A THIN, FLEXIBLE FIBROUS LAYER AT LEAST PARTIALLY COVERING SAID ADHESIVE LAYER, THE INNER SIDE OF SAID FIBROUS LAYER BENG IMBEDDED IN SAID ADHESIVE LAYER, SAID ADHESIVE LAYER EXTENDING ONLY PARTIALLY TOWARD THE OUTER SIDE OF SAID FIBROUS LAYER, AND SAID FIBROUS LAYER BEING READILY PENETRABLE BY SOFTENED ADHESIVE FROM THE INSIDE TO THE OUTSIDE OF SAID FIBROUS LAYER, WHEREBY SAID FIBROUS LAYER PREVENTS BLOCKING OF A PLURALITY OF SAID SHEETS WHEN STORED IN SUPERPOSITION, WHILE PERMITTING SAID ADHESIVE LAYER TO BE EASILY ACTIVATED FOR ADHERING A SHEET TO A SURFACE.
US315832A 1963-10-14 1963-10-14 Remoistenable adhesive sheet Expired - Lifetime US3271228A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4833002A (en) * 1985-10-04 1989-05-23 The Wiggins Teape Group Limited Remoistenable adhesives
US4910048A (en) * 1985-10-04 1990-03-20 Peter Sinclair Remoistenable adhesives
US6267868B1 (en) * 1999-08-16 2001-07-31 General Electric Company Method and tool for electrochemical machining
US20060104856A1 (en) * 2004-11-18 2006-05-18 Kimberly-Clark Worldwide, Inc. Sterilization wrap with fastening means
US20120193402A1 (en) * 2011-02-01 2012-08-02 Gascogne Laminates Film for packaging product, especially an envelope

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US709326A (en) * 1902-06-21 1902-09-16 George E Howard Label.
US1101029A (en) * 1913-08-14 1914-06-23 Giovanni Magnasco Manufacture of flexible and waterproof material from paper sheets.
US2353762A (en) * 1941-02-28 1944-07-18 American Can Co Container
US2364001A (en) * 1942-12-02 1944-11-28 Internat Plastic Corp Translucent fiber tissue pressuresensitive adhesive tape
US2737179A (en) * 1951-06-08 1956-03-06 Wood Conversion Co Wettable fiber felt

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US709326A (en) * 1902-06-21 1902-09-16 George E Howard Label.
US1101029A (en) * 1913-08-14 1914-06-23 Giovanni Magnasco Manufacture of flexible and waterproof material from paper sheets.
US2353762A (en) * 1941-02-28 1944-07-18 American Can Co Container
US2364001A (en) * 1942-12-02 1944-11-28 Internat Plastic Corp Translucent fiber tissue pressuresensitive adhesive tape
US2737179A (en) * 1951-06-08 1956-03-06 Wood Conversion Co Wettable fiber felt

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4833002A (en) * 1985-10-04 1989-05-23 The Wiggins Teape Group Limited Remoistenable adhesives
US4910048A (en) * 1985-10-04 1990-03-20 Peter Sinclair Remoistenable adhesives
US6267868B1 (en) * 1999-08-16 2001-07-31 General Electric Company Method and tool for electrochemical machining
US20060104856A1 (en) * 2004-11-18 2006-05-18 Kimberly-Clark Worldwide, Inc. Sterilization wrap with fastening means
US20120193402A1 (en) * 2011-02-01 2012-08-02 Gascogne Laminates Film for packaging product, especially an envelope
US8563126B2 (en) * 2011-02-01 2013-10-22 Gascogne Laminates Film for packaging product, especially an envelope

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