Package having an adhesive-based reclosable fastener and methods therefor
View Patent ↗A reclosable package for a plurality of products is described herein. The reclosable package includes an adhesive-based fastener that utilizes a low tack adhesive and pivotably connected first and second compartments, each compartment configured to receive the plurality of products therein. The adhesive-based fastener includes opposing portions of resealable adhesive on interior surfaces of the first and second compartments respectively, so that the interior surfaces can be pivoted together to close the reclosable package.
1. A package comprising:
a first compartment and a second compartment;
a connecting portion between the first and second compartments such that the compartments are configured to be moved between a closed configuration with the first and second compartments adjacent one another and an open configuration with the first and second compartments moved apart; and
a reclosable adhesive-based fastener including opposing portions of adhesive arranged on the first and second compartments so that the opposing portions of adhesive are adhered together when the package is in the closed configuration and configured for repeated peel and reseal bonding to allow repeated opening and closing of the package.
2. The package of claim 1 , wherein the first and second compartments are defined by a back wall, a front wall, a bottom wall, and a pair of lateral side walls.
3. The package of claim 2 , wherein the opposing portions of adhesive are disposed on major faces of the front walls of the first and second compartments.
4. The package of claim 2 , wherein the connecting portion extends between ends of the first and second compartments a distance approximately equal to a width of the pair of lateral side walls of the first and second compartments.
5. The package of claim 2 , wherein the connecting portion extends between the back walls of the first and second compartments.
6. The package of claim 2 , wherein the front walls of the first and second compartments are partial walls to provide access an interior cavity of the first and second compartments.
7. The package of claim 1 , wherein the opposing portions of adhesive are disposed on the first and second compartments in a plurality of discrete portions.
8. The package of claim 1 , wherein the first compartment, the second compartment, and the connecting portion have a unitary construction.
9. The package of claim 1 , wherein the first compartment, the second compartment, and the connecting portion form a clamshell carton hinged at the connecting portion.
10. The package of claim 1 , wherein the adhesive includes a UV-cured pressure sensitive adhesive including at least one UV-curable acrylic oligomer, at least one tack control component, and an optional at least one elastomeric material; and
wherein the UV-cured pressure sensitive adhesive includes an adhesive component ratio (ACR) 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 such that the UV-cured pressure sensitive adhesive has a first peel adhesion between the opposing portions of adhesive of about 200 grams per linear inch (gpli) to about 900 gpli and up to five subsequent peel adhesions between the opposing portions of adhesive being about 30 percent to about 200 percent of the first peel adhesion.
11. The package of claim 1 , wherein a bond strength between the opposing adhesive portions is less than a bond strength between each of the adhesive portions and the first and second compartments respectively.
12. The package of claim 1 , wherein at least an outer portion of the first and second compartments include an adhesion promoting filler particles positioned on the compartments to engage the adhesive.
13. The package of claim 1 , further comprising a polymer coating on the first and second compartments positioned thereon so that the reclosable adhesive-based fastener is applied to the polymer coating.
14. The package of claim 13 , where the polymer coating includes a filler selected from organically modified clay, phillosilicates, calcium carbonate, montmorillonite, dolomite, talc, mica, and mixtures thereof.
15. The package of claim 1 , wherein the first and second compartments are constructed from a substrate selected from cardboard, paperboard, laminate, corrugated cardboard, or mixtures thereof.
16. The package of claim 15 , wherein the substrate is paperboard and has a polymer layer thereon.
17. The package of claim 16 , wherein the substrate is impregnated with a chemical strengthening agent including isocyanates.
18. The package of claim 1 , wherein a first peel adhesion between the opposing portions of adhesive is about 200 grams per linear inch (gpli) to about 900 gpli; and a subsequent peel adhesion between the opposing portions of adhesive is about 30 percent to about 200 percent of the first peel adhesion.
19. A blank capable of being folded for forming a folded package, the blank comprising:
a center bridging portion;
first and second end portions connected to opposite sides of the center bridging portion, the first and second end portions configured to be folded into first and second compartments; and
low tack adhesive deposited on each of the first and second end portions and oriented in a manner such that formed first and second compartments can be pivoted closed with the low tack adhesive adhered together.
20. The blank of claim 19 , wherein each of the first and second end portions includes a back panel having top, bottom, and side edges, the back panel pivotably connected to the center bridging portion along one edge, side panels pivotably connected to the back panel along the side edges thereof, front wings pivotably connected to edges of the side panels opposite to the back panel, a bottom panel pivotably connected to the back panel along the bottom edge thereof, and a front panel pivotably connected to the bottom panel along an edge thereof opposite to the bottom panel.
21. The blank of claim 19 , further comprising permanent adhesive portions disposed on the front wings for forming the first and second compartments.
22. The blank of claim 19 , wherein the low tack adhesive includes an adhesive component ratio (ACR) 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 such that the UV-cured pressure sensitive adhesive has a first peel adhesion between the opposing portions of adhesive of about 200 grams per linear inch (gpli) to about 900 gpli and up to five subsequent peel adhesions between the opposing portions of adhesive being about 30 percent to about 200 percent of the first peel adhesion.