US3501797A - Tacky mat with improved sheet separating means - Google Patents

Tacky mat with improved sheet separating means Download PDF

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Publication number
US3501797A
US3501797A US3501797DA US3501797A US 3501797 A US3501797 A US 3501797A US 3501797D A US3501797D A US 3501797DA US 3501797 A US3501797 A US 3501797A
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stack
sheets
sheet
strand
top
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John J Nappi
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JOHN J NAPPI
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John J Nappi
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L23/00Cleaning footwear
    • A47L23/22Devices or implements resting on the floor for removing mud, dirt, or dust from footwear
    • A47L23/26Mats or gratings combined with brushes ; Mats
    • A47L23/266Mats
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S206/00Special receptacle or package
    • Y10S206/82Separable, striplike plural articles
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/14Layer or component removable to expose adhesive
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/14Layer or component removable to expose adhesive
    • Y10T428/1476Release layer
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/24Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/2419Fold at edge
    • Y10T428/24264Particular fold structure [e.g., beveled, etc.]

Description

March 24, 1970 I J. J. NAPPl 3,

TACKY MAT WITH IMPROVED SHEET SEPARATING MEANS Filed Sept. 9, 1968 2 Sheets-Sheet 1 FIG. 3

INVENTOR.

JOHN J. NA PPI ATTO R N EYS J. J. NAPPI 3,501,797

TAGKY MAT WITH IMPROVED SHEET SEPARATING MEANS March 24, 1970 2 Sheets-Sheet 2 Filed Sept. 9, 1968 FIG. 5

r O r. O O f FIG. 6

R m H N l N H O J ATTORNEYS United States Patent 3,501,797 TACKY MAT WITH IMPROVED SHEET SEPARATING MEANS John J. Nappi, 80 Berkley Road, Berlin, Conn. 06037 Filed Sept. 9, 1968, Ser. No. 758,375 Int. Cl. A471 23/22 US. Cl. 15-215 7 Claims ABSTRACT OF THE DISCLOSURE A tacky mat stack of pressure sensitive adhesive coated sheets is provided at one end with a strand between each pair of adhered sheets and a pulling loop on the end of each strand extending from the stack. By pulling the loop and the strand the adhesive bond is released across one end of the sheet to facilitate peeling off the used sheet.

BACKGROUND OF THE INVENTION The field of this invention relates to tacky mats of the type employing a stack of pressure sensitive adhesive coated sheets such as disclosed in applicants prior US. Patent No. 3,083,393 and copending application of Nappi et al., Ser No. 551,393, now Patent No. 3,400,421.

In prior art tacky mats of the pressure sensitive type the conventional practice has been to provide a tab of release paper material between adjacent sheets near the edge of the stack to permit an intial finger hold to be obtained for peeling the used sheets from the top of the stack. By the nature of pressure sensitive adhesives the stack of sheets becomes increasingly more tightly bonded as the pedestrian trafiic passes thereover due to the high unit pressure with which the feet of the users compress the sheets and the time duration in which the sheets are held in adhesive contact. Thus it has been found that it is extremely diflicult at times to separate a single sheet from the top of the stack, since when only one corner of the stack is freed by the release paper interleaf, it is possible to grip mistakenly two or more sheets and thus considerable waste is involved. It is also inconvenient to peel tightly bonded sheets when only a corner is freed by the release agent, since until a complete side has been freed from adhesive bond, the matter of gripping and starting a progressive peeling action presents some considerable difiiculty to the maintenance personnel who are required to change the soiled top sheets.

SUMMARY OF THE INVENTION In the present invention the matter of peeling adhesively bonded sheets is rendered relatively simple and at the same time assurance is provided that only a single sheet at a time will be released for peeling thereby preventing the costly practice of disposing of two or more adhered sheets when only the top soiled sheet is intended to be discarded. At the same time the peeling operation is simplified since the present invention provides for releasing a substantial edge portion of the soiled top sheet. Preferably an entire end dimension of the sheet is released so that a progressive peeling action can be initiated and a good grip on the end of the sheet provided for the maintenance personnel. To obtain these results the stack of sheets is provided with a strong thin strand between each pair of adjacent adhered sheets and a pull loop or other gripping means is secured to the end of the strand which projects from the edge of the stack. By gripping this pulling means and progressively pulling the strand from the end of the stack the entire end of the soiled sheet is released from adhesive bond with the next lower sheet and can be gripped for peeling the used sheet.

"ice

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective View of the invention as employed in a conventional tacky mat frame in accordance with applicants first mentioned patent.

FIG. 2 is a perspective view of an insert corresponding to applicants first mentioned patent and showing the action of the release means in separating the end of the top sheet in the stack as provided by the present invention.

FIG. 3 is a fragmentary view in section showing details of the construction of the insert of FIG. 2.

FIG. 4 is a perspective view of a double-sided mat corresponding to that disclosed in the second aforementioned patent with the present invention applied thereto.

FIG. 5 is an end view of FIG. 4.

FIG. 6 is a view similar to FIG. 5, but showing the release of the entire remaining pad and bottom stack of sheets.

FIG. 7 is a partial view showing a pull tab.

FIG. 8 is a partial view showing an improved pull tab.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1, a tacky mat and frame installation is shown in which a frame 11 having bevelled edges is provided to receive an insert tacky mat 12 consisting of a plurality of pressure sensitive adhesive coated sheets. The mat 12 can be placed directly in the frame or can be mounted on a masonite board insert in accordance with conventional practice. As indicated in FIG. 1, a strand 13 runs under each sheet the full width thereof and projects from one edge of the stack. The projecting end is folded over onto the top surface of the stack 12 and adhesively retained thereon. The next lower sheet in the stack similarly has a strand 13' which projects therefrom and is folded over to underlie the top sheet in the stack 12 shown in FIG. 1. In this manner each sheet in the stack is provided with a strand such as 13 or 13 and extends substantially the full width dimension of the stack 12 and extends from the edge of the stack as shown. Any suitable gripping means can be provided at the end of the strands 13 and 13' such as a loop 15.

The strands 13, 13' and the similar strands between the remaining adjacent adhered sheets in the stack 12 are preferably of extremely thin material so as not to unduly add to the bulk of the stack and particularly so as not to show the general outline of their location as the top sheet becomes soiled. For this purpose any kind of strong string, wire or monofilament nylon line may be used as well as various forms of thin ribbon and other materials. All that is required is that the size of the strand 13 and 14 be of small diameter and have adequate strength for the required task hereinafter described. Materials which release lint or other fibers should be avoided in view of the general application of tacky mats in clean room areas and the surface character of the strands should be such that it will readily peel from the pressure sensitive adhesive used on the sheets in the stack 12 but will not tend to pull out axially so as to prevent the breaking of the bond between adjacent sheets.

Referring now to FIG. 2, the stack 12 is shown on an insert base 16 which may be inserted in a frame 11 or used as the floor base for supporting the stack 12. If used without a frame the insert base 16 should have suitable provision for holding it on the floor whenever the unit does not have sufiicient weight to be self-retaining on the floor level when in use. Whenever it is desired to change the top sheet in the stack the maintenance personnel or other operator grips the loop 15 or other gripping means at the end of strand 13 and pulls the strand out from the edge 17 of the top sheet. By pulling the strand 13 outward from the edge 17 the strand 13 has a sweeping motion from its anchored portion between the adhered sheets to the free portion which has passed out from beneath the adhered sheets. By virtue of the sweeping motion the adhesive bond between the sheets adjacent the strand 13 is broken and by the time the loop 15 has been pulled to completely free the strand 13 the entire edge 17 of the top sheet has been released. It is then a simple matter to grip the released edge 17 and peel the top sheet from the stack 12.

Referring to FIG. 3, it will be seen that strands 13, 13' and 13" are provided between each pair of adhered sheets in the stack 12. While only four sheets have been shown in the stack 12 of FIG. 3, it will be understood that any number of sheets can be used and that a strand 13 will be placed between each pair of adhered sheets in the stack. FIG. 3 also shows details of the loop 15 which may be formed by folding back the strand upon itself and, if desired knotting it as at 21.

Referring now to FIG. 4, a modification of the invention is shown in which a top stack 21 of pressure sensitive sheets with adhesive side up is secured to a foam pad 22 which has on the bottom thereof a bottom stack 23 of pressure sensitive adhesive sheets adhesive side down. This construction corresponds to that described with reference to FIG. 3 of the Nappi et a]. patent referred to No. 3,400,421. In each case the pads 21 and 23 are adhered to the foam pad 22 and the device is adapted for use either as an insert in a frame or for direct application to the floor with the entire unit being inverted as soon as the top pad 21 is exhausted except for the bottom sheet 24 in the top stack 21. As described with reference to FIG. 1, the individual sheets of the stacks 21 and 23 are provided with strands 13 and pulling loops 15 to permit release and peeling of the individual sheets in the stacks.

Above the bottom sheet 24 in the top stack 21, however, a strand 25 is provided which has an extension 26 which passes around the edge of the pad 22 and the stack 23 and underlies the bottom surface of the stack 23. As shown in FIG. 5, the strand 13 is capable of peeling the top sheet in stack 21 as previously described. As further shown in FIG. 6, by virtue of the connecting extension 26, strand releases sheet 27 directly above bottom sheet 24 and continued pull on the strand 25 lifts the entire remaining pad 22 and stack 23 from the surface 29 to which the tacky mat was initially adhered. Thus at the time the next to the last sheet 27 in the top stack 21 is soiled so that it needs to be changed the strand 25 can be pulled to release sheet 27 which is peeled away to expose the fresh adhesive surface of sheet 24. The bond between the bottom sheet of the stack 23 and the floor or frame surface 29 is then released as shown in FIG. 6 by continued pull on the strand 25 so that the fresh adhesive surface 24 can be used to hold the inverted pad to the floor support surface 29 and thus expose the adhesive surfaces of pad 23 which are now upwardly facing for use as a shoe sole cleaning tacky mat.

Referring to FIG. 7, a modification of the pull gripping means 15 is shown in which the loop of the strand is enclosed within a folded pressure sensitive label 31. The label 31 can readily be attached to the loop 15 to make an attractive appearance with a legend printed thereon indicating the number of sheets remaining in the stack and that the tab 31 should be pulled to change the top sheet. The adhesive on the label 31 need not necessarily adhere strongly to the material of the loop 13 since the folded configuration will be retained within the label 31 by the adhesive bond between the inner surfaces of the folded label. This physical anchoring of the loop 15 permits the knot 21 to be omitted, if desired, since one or more folds in the strand material will securely anchor the strand 13 within the label 31. If the outer surface of the label 31 is a release paper it can readily be peeled from the adhesive surface of the sheets when it is desired to be used and yet retained thereon prior to use by the mild adhesive bond which pressure sensitive adhesives have for release papers.

FIG. 8 shows another form of pull tab in which a thin flat ring 32 is attached to the strand 13. The ring 32 is preferably made of a thin flexible plastic sheet material of considerable strength such as Mylar. When used as a finger ring to pull the strand 13, the annular width of the ring 32 flexes to lie fiat against the finger and thus does not tend to cut the skin as is possible with a loop made of thin wire or string. The ring 32 is adhered to the under side of a pressure sensitive adhesive coated label or cover 33 which may be printed on its top side with the relevant information as previously described for FIG. 7. Since the adhesive surface of label 33 is normally downward facing, a small patch 34 of release paper is interposed between the adhesive surfaces of the label 33 and the top sheet in the stack 12 to permit easy initial peeling of the label 33. Alternatively, the ring 32 may be made of a material such as Teflon with release surface characteristics. Each sheet in the stack 12 is provided with a similar strand 13, label 31, ring 32 and release paper patch 34 to permit each sheet to be removed in turn as they become soiled.

Various modifications of the invention will now be apparent in light of the present teaching.

I claim:

1. An improved tacky mat for adhesively cleaning the soles of shoes or the like as users move over the exposed top surface of the mat comprising:

a stack of pliable peelable pressure sensitive adhesive coated sheets stacked adhesive side up to provide a tread surface which sheets, except for the top sheet in said stack, are adhered to the under surface of the next higher sheet in said stack and exposed for use in succession as the sheets are peeled from the top of said stack; and

a strand interleaved between two adjacent adhered sheets of said stack, said strand extending a substantial distance across a transverse dimension of said sheets and protruding from one edge of said stack with a gripping means at the protruding end, said protruding end and gripping means being folded over the edge of the next higher of said adjacent adhered sheets in said stack and retained on the top surface thereof, said strand being strong enough to separate the adhesive bond between said adjacent adhered sheets as said strand is pulled;

the bottom surface of said pad being adapted to be supported on a walking surface and retained thereon against the upward pull of a shoe or the like adhered to the top sheet.

2. Apparatus according to claim 1 including a plurality of said strands with one interleaved between each two adjacent adhered sheets in said stack.

3. Apparatus according to claim 2 in which said gripping means comprises a flat loop in the end of said strand and a cover for said loop, said cover anchored to said loop and having a release outer surface readily peelable from the pressure sensitive adhesive on said sheets.

4. Apparatus according to claim 2 in which said gripping means comprises a flat Wide flexible ring.

5. Apparatus according to claim 4 and including a pressure sensitive adhesive coated cover adhered to said ring and the adhesive surface of the adjacent sheet of said stack with a patch of release paper interposed between at least a portion of the joined adhesive surfaces of said cover and said sheet.

6. An improved tacky mat apparatus according to claim 2 and including:

a fiat, porous, resilient and compressible pad substantially coextensive with the area of said stack;

means for securing the top surface of said pad to the under surface of the bottom sheet in said stack with the adhesive surfaces of said sheet facing upward;

a second stack of sheets secured to the bottom surface of said pad with the adhesive surfaces of said sheets in said second stack facing downward; and

a strand extending under the bottom sheet of said second stack and protruding from one edge of said second stack to fold over the edges of said second stack and said pad and across the top surface of the bottom sheet of the top stack adhered to the top surface of said pad;

thereby providing for releasing the sheet in said top stack adhered to said bottom sheet in said top stack and by continued pull to release the adhesive bond of the bottom sheet of said bottom stack from a supporting surface to permit inversion of the remainder of sad tacky mat.

7. An improved tacky mat for adhesively cleaning the soles of shoes or the like as users move over the exposed top surface of the mat comprising:

a first stack of pliable peelable pressure sensitive adhesive coated sheets stacked adhesive side up to provide a tread surface which sheets, except for the top sheet in said first stack, are adhered to the under surface of the next higher sheet in said first stack and exposed for use in succession as the sheets are peeled from the top of said first stack;

a flat, porous, resilient and compressible pad substantially coextensive with the area of said first stack;

means for securing the top surface of said pad to the under surface of the bottom sheet in said first stack with the adhesive surfaces of said sheets facing upward;

a second stack of sheets similar to said first stack but secured to the bottom surface of said pad with the adhesive surfaces of said sheets in said second stack facing downward; and

a strand extending under the bottom sheet of said second stack and protruding from one edge of said second stack to fold over the edges of said second stack and said pad and onto the top surface of the bottom sheet of the top stack adhered to the top surface of said pad; thereby providing for releasing the adhesive bond of the bottom sheet of said bottom stack from a supporting surface by pulling said strand to permit inversion of the remainder of said tacky mat.

References Cited UNITED STATES PATENTS 1,769,719 7/ 1930 Smith 206-57 2,214,763 9/ 1940 Ellestad. 3,083,393 4/1963 Nappi. 3,138,466 6/1964 Long. 3,247,956 4/1966 Rosen. 3,400,421 9/ 1968 Nappi et al 15215 DANIEL BLUM, Primary Examiner US. Cl. X.R. 15-104; 161-406

US3501797A 1968-09-09 1968-09-09 Tacky mat with improved sheet separating means Expired - Lifetime US3501797A (en)

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US3717897A (en) * 1970-06-18 1973-02-27 H Amos Tacky floor pad
US3785102A (en) * 1971-11-01 1974-01-15 Edward T Strickland Tacky floor pad
US4248919A (en) * 1979-04-26 1981-02-03 Litton Business Systems, Inc. Business form
US4260056A (en) * 1979-03-26 1981-04-07 Horvath Ralph S Suture and needle holder
US4559250A (en) * 1984-03-21 1985-12-17 Paige Raymond J Contamination-control mats
US4802584A (en) * 1988-02-18 1989-02-07 Minnesota Mining And Manufacturing Company Kit for preparing blister packages
US5018235A (en) * 1988-09-13 1991-05-28 Kimberly-Clark Corporation Mat holder
US5054124A (en) * 1990-09-04 1991-10-08 Darvas Robert L Hair cutting cape kit with cape and pad members utilizing adhesive to seal and remove hair clippings
US5142733A (en) * 1989-12-15 1992-09-01 Kimberly-Clark Corporation Mat holders
US5174202A (en) * 1991-08-09 1992-12-29 Schlichting Mary J Method for holding a textile article for silk screen printing
US5458720A (en) * 1993-09-13 1995-10-17 Cox & Company, Inc. Method and structure for separably and adhesively bonding two parts together in such a manner that any remaining adhesive can be easily removed after the parts have been separated
US5597418A (en) * 1994-09-30 1997-01-28 New Pig Corporation Method of making foldable mat for absorbing liquids
US5673433A (en) * 1994-12-13 1997-10-07 Minnesota Mining & Manufacturing Company Garment having barrier layer adhered thereto
US6025045A (en) * 1996-02-28 2000-02-15 Langeman; Gary D. Edge trimming tape and method of manufacture
WO2001000400A1 (en) * 1999-06-26 2001-01-04 Corpus Carol A Multi-layer surface covering
US6219876B1 (en) 1999-05-04 2001-04-24 Tech Mats, L.L.C. Floor mat
US6233776B1 (en) 1999-05-04 2001-05-22 Tech Mats, L.L.C Advanced floor mat
US6417778B2 (en) 1999-05-04 2002-07-09 Tech Mats Llc Advanced floor mat
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US1769719A (en) * 1929-03-18 1930-07-01 Underwood Elliott Fisher Co Carton for carbon sheets
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US3247956A (en) * 1964-02-25 1966-04-26 Leonard B Rosen Pressure sensitive tape
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Cited By (66)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3717897A (en) * 1970-06-18 1973-02-27 H Amos Tacky floor pad
US3665543A (en) * 1970-11-19 1972-05-30 John J Nappi Tacky mat stack
US3785102A (en) * 1971-11-01 1974-01-15 Edward T Strickland Tacky floor pad
US4260056A (en) * 1979-03-26 1981-04-07 Horvath Ralph S Suture and needle holder
US4248919A (en) * 1979-04-26 1981-02-03 Litton Business Systems, Inc. Business form
US4559250A (en) * 1984-03-21 1985-12-17 Paige Raymond J Contamination-control mats
US4802584A (en) * 1988-02-18 1989-02-07 Minnesota Mining And Manufacturing Company Kit for preparing blister packages
US5018235A (en) * 1988-09-13 1991-05-28 Kimberly-Clark Corporation Mat holder
US5142733A (en) * 1989-12-15 1992-09-01 Kimberly-Clark Corporation Mat holders
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Also Published As

Publication number Publication date Type
LU59366A1 (en) 1970-01-07 application
BE738103A (en) 1970-02-02 grant
FR2017613A1 (en) 1970-05-22 application
NL6913539A (en) 1970-03-11 application
DE1943718A1 (en) 1970-04-02 application
GB1243445A (en) 1971-08-18 application

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