US 2011/0211778 A1Published application

Reclosable Fasteners, Packages Having Reclosable Fasteners, and Methods for Creating Reclosable Fasteners

AssigneeIntercontinental Great Brands LLC

InventorsPaul Anthony Zerfas, Kerri Kim Clark, John Dill Halka, Panagiotis Kinigakis, Kenneth C. Pokusa, Jeffrey James Boyce, Michael Clingerman, Colleen Marie Henry, David Chris Masterson, Vincent Daniel McGinniss

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Abstract

A UV-curable pressure sensitive adhesive, a package having an adhesive-based reclosable fastener including the pressure sensitive adhesive, and a method of forming the package is described herein. The package includes a cavity and opposing panels configured to cover an opening to the cavity. The reclosable fastener is a UV-cured pressure sensitive adhesive comprised of one or more UV-curable acrylic oligomers, one or more tack control components, and, optionally, an elastomeric material. An adhesive component ratio defines an effective ratio made up of the weight percent of the UV-curable acrylic oligomer relative to the sum of the weight percents of the tack control component and elastomeric component, where the ratio provides a fastener with a first peel adhesion and subsequent peel adhesions effective to form the adhesive-based fastener into a reclosable fastener.

Claims27

Dependent claims

A package having an adhesive-based reclosable fastener, the package comprising:

walls forming a cavity for receiving one or more products;
opposing panels of the walls;
a reclosable UV-cured adhesive-based fastener supplied from opposing adhesive portions of a UV-cured pressure sensitive adhesive with one of the opposing adhesive portions disposed on each of the opposing panels, the UV-cured pressure sensitive adhesive including at least one UV-curable acrylic oligomer, at least one tack control component, and optionally at least one elastomeric material;
an adhesive component ratio (ACR) of the UV-cured pressure sensitive adhesive defined by formula (A) where the weight percent of the UV-curable acrylic oligomer relative to the sum of the weight percents of the tack control component and the optional at least one elastomeric material is about 0.5 to about 1.5
(
wt


%


UV

-

curable


acrylic


oligomer
)
(
wt


%


tack


control


component
+
wt


%


elastomeric


material
)
;
(
A
)
the ACR effective so that the reclosable UV-cured adhesive-based fastener has a first peel adhesion between the opposing adhesive portions of about 200 grams per linear inch (gpli) to about 900 gpli and up to five subsequent peel adhesions between the opposing adhesive portions each about 30 percent to about 200 percent of the first peel adhesion;
and
wherein the ACR and the package walls are effective to form a bond strength of the UV-cured pressure sensitive adhesive to the opposing panels greater than the first peel adhesion and the subsequent peel adhesions between the opposing adhesive layers so that the opposing panels can be repeatedly peeled open without delaminating the opposing adhesive layers from the opposing panels.

53 more elements

A method of forming a package having an adhesive-based reclosable fastener, the method comprising:

applying a pressure sensitive adhesive to a package substrate, the pressure sensitive adhesive including at least one UV-curable acrylic oligomer, at least one tack control agent, and optionally at least one elastomeric material where an adhesive component ratio (ACR) thereof defined by formula (A) with the weight percent of the UV-curable acrylic oligomer relative to the sum of the weight percents of the tack control agent and the optional elastomeric material is about 0.5 to about 1.5
(
wt


%


UV

-

curable


acrylic


oligomer
)
(
wt


%


tack


control


component
+
wt


%


elastomeric


material
)
;
(
A
)
where an unapplied pressure sensitive adhesive forms a stable liquid that remains homogeneous without phase separation for at least about 3 days at about 21° C. to about 24° C. and has a viscosity below about 2000 cPs at about 70° C. to about 75° C.;
curing the applied pressure sensitive adhesive on the package substrate by application of ultraviolet radiation;
forming the package substrate into a package comprising opposing panels where the cured applied pressure sensitive adhesive forms an adhesive-based reclosable fastener provided by opposing layers of the pressure sensitive adhesive disposed on the opposing panels respectively and exhibits a first peel adhesion between the opposing layers of about 200 grams per linear inch (gpli) to about 900 gpli and up to five subsequent peel adhesions each about 30 percent to about 200 percent of the first peel adhesion and a bond between the pressure sensitive adhesive and the package substrate being greater than the first peel adhesion and the subsequent peel adhesions.

50 more elements

A rigid package having a UV-cured package closure comprising:

opposing first and second surfaces of the rigid package, both first and second surfaces made from a rigid substrate;
a UV-cured package closure supplied from opposing portions of a pressure sensitive adhesive with one of the opposing layers disposed on each of the first and second surface, the pressure sensitive adhesive including at least one UV-curable acrylic oligomer, at least one tack control component, and optionally at least one elastomeric material;
an adhesive component ratio (ACR) of the pressure sensitive adhesive defined by formula (A) where the weight percent of the UV-curable acrylic oligomer relative to the sum of the weight percents of the tack control component and the elastomeric material is about 0.5 to about 1.5
(
wt


%


UV

-

curable


acrylic


oligomer
)
(
wt


%


tack


control


component
+
wt


%


elastomeric


material
)
;
(
A
)
the ACR effective so that a UV-cured pressure sensitive adhesive forms the package closure with a first peel adhesion between the opposing pressure sensitive adhesive portions of about 200 to about 900 grams per linear inch (gpli) and up to five subsequent peel adhesions between the opposing pressure sensitive adhesive portions each about 30 to about 200 percent of the first peel adhesion;
and
wherein the ACR and the rigid substrate are effective to form a bond strength of the UV-cured pressure sensitive adhesive to the first and second surfaces greater than the first peel adhesion and the subsequent peel adhesions between the opposing pressure sensitive adhesive layers so that the first and second surfaces can be repeatedly peeled open without delaminating the pressure sensitive layers from respective first and second surfaces.

52 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/035,399Filed 25 Feb 2011
Priority: 26 Feb 2010
Published: 1 Sep 2011
Term ends: Not estimatedThe source records don’t support an estimate.

Classification32 codes

C09J 4/06
Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; adhesives, based…
B32B 3/085
Characterised by added members at particular parts: spaced apart pieces on the surface of a layer
B32B 7/06
Interconnection of layers: permitting easy separation
B32B 7/12
Interconnection of layers: using interposed adhesives or interposed materials with bonding properties

Family

Application61/308,540Us provisional application · filed 26 Feb 2010
Application61/317,592Us provisional application · filed 25 Mar 2010
Application61/407,406Us provisional application · filed 27 Oct 2010
Application61/407,409Us provisional application · filed 27 Oct 2010
US 9,096,780 B2Related patent
US 2011/0211778 A1This patent

From the US filing history. Foreign family members aren’t listed.