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1. (WO1980002532) PROCEDE D"APPLICATION D"UN ADHESIF COMPOSITE SENSIBLE A LA PRESSION
Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

C LA IM S

1. A method of adhering one item to another item through a composite pressure sensitive adhesive construction, comprising the steps of:
applying a first pressure sensitive adhesive layer to one item;
releasably attaching a central release liner to said first pressure sensitive adhesive layer;
applying a second pressure sensitive adhesive layer to another item, said second adhesive layer releasably attached to the remaining side of said central release liner; and
removing said central release liner and contacting said first pressure sensitive adhesive layer and said second pressure sensitive adhesive layer to form a bond.

2. A method of adhering one item to another item through a composite pressure sensitive adhesive construction, comprising the steps of:
applying a first adhesive layer to one item;
securing a carrier cushion layer to said first adhesive layer;
applying a second pressure sensitive adhesive layer to said carrier cushion layer;
releasably attaching a central release liner to said second adhesive layer;
applying a fourth adhesive layer to another item;
securing a second carrier cushion layer to said fourth adhesive layer;
applying a third pressure sensitive adhesive layer to said second carrier layer, said third pressure sensitive adhesive layer releasably attached to said central release liner; and
removing said central release liner and contacting said second pressure sensitive adhesive layer with said third pressure sensitive adhesive layer to form a bond.

3. A method of adhering one item to
another through a composite pressure sensitive construction, comprising the steps of:
applying a first pressure sensitive adhesive layer to one item;
releasably attaching a central release liner to said first pressure sensitive adhesive layer;
applying a second pressure sensitive adhesive layer to said central release liner;
releasably attaching an external release liner on its contact side to said second pressure sensitive adhesive layer to protect the composite pressure sensitive adhesive construction during storage;
removing said external release liner and contacting said second pressure sensitive adhesive layer to another item; and
removing said central release liner and contacting said first pressure sensitive adhesive layer and said second pressure sensitive adhesive layer to form a bond.

4. A method of adhering one item to another through a composite pressure sensitive adhesive construction, comprising the steps of: applying a first adhesive layer to one item;
securing a carrier cushion layer to said first adhesive layer;
applying a second pressure sensitive adhesive layer to said carrier cushion layer;
releasably attaching a central release liner to said second pressure sensitive adhesive layer;
applying a third pressure sensitive adhesive layer to said central release liner;
securing a second carrier cushion layer to said third pressure sensitive adhesive layer;
applying a fourth pressure sensitive adhesive layer to said second carrier cushion layer;
releasably attaching an external release liner on its contact side to said fourth pressure sensitive adhesive layer to protect the composite pressure sensitive adhesive construction during storage;
removing said external release liner and contacting said fourth pressure sensitive adhesive layer to another item; and
removing said central release liner and contacting said second pressure sensitive adhesive layer with said third pressure sensitive adhesive layer to form a bond.

5. A composite pressure sensitive adhesive construction, comprising:
(a) a pressure sensitive adhesive layer;
(b) a central release liner having two sides;

(c) a second pressure sensitive adhesive layer; and
(d) an exterior release liner having a contact side;
one side of said central release liner releasably attached to said first pressure sensitive adhesive layer and the remaining side of said central release liner releasably attached to said second pressure sensitive adhesive layer; and said contact side of said exterior release liner releasably attached to said second pressure sensitive adhesive layer.

6. A composite pressure sensitive adhesive construction, according to Claim 5, wherein both said sides of said central release liner and said contact side of said exterior release liner have a release coating thereon.

7. A composite pressure sensitive adhesive construction, according to Claim 6, wherein one release coating on said central release liner has a tighter release than the remaining release coating so that a differential central release liner exists.

8. A composite pressure sensitive adhesive, comprising:
(a) a first adhesive layer;
(b) a carrier layer having two sides;
(c) a second pressure sensitive adhesive layer;
(d) a central release liner having two sides;
(e) a third pressure sensitive adhesive layer;
(f) a second carrier layer having two sides;
(g) a fourth pressure sensitive adhesive layer; and
(h) an exterior release liner having a contact side;
one side of said first carrier layer attached to said first adhesive layer and the remaining side of said first carrier layer attached to said second pressure sensitive adhesive layer;
one side of said central release liner releasably attached to said second pressure sensitive adhesive layer and the remaining side of said central release liner releasably attached to said third
pressure sensitive adhesive layer;
one side of said second carrier layer
attached to said third pressure sensitive adhesive layer and the remaining side of said second carrier layer attached to said fourth pressure sensitive adhesive layer; and
said contact side of said exterior release liner releasably attached to said fourth pressure sensitive adhesive layer.
9. A composite pressure sensitive adhesive construction, according to Claim 8, wherein both said sides of said central release liner and said contact side of said exterior release liner have a release coating thereon.

10. A composite pressure sensitive adhesive construction according to Claim 9, wherein one of the release coatings attached to said central
release liner has a greater tightness than the remaining release coating so that said second or
said third adhesive layers are more tightly bound to said central release liner to effect a differential release liner.

11. A composite pressure sensitive adhesive construction, comprising;
first exterior release liner, a central release liner, and a second exterior release liner,
said first exterior release liner having a release coating, said central release liner having a release coating located on each side thereof, and said second exterior release liner having a release coating thereon,
a first pressure sensitive adhesive layer, said first pressure sensitive adhesive layer contacting said release coating located on said first exterior release liner and contacting a release coating located on one side of said central release liner and thereby releasably secured to said first exterior release liner and to said one side of said central release liner, and
a second pressure sensitive layer, said second pressure sensitive adhesive layer contacting said release coating located on said second exterior release layer and said release coating located on the remaining side of said central liner and thereby releasably secured to said second exterior release liner and to the remaining side of said central release liner.

12. A composite pressure sensitive adhesive construction, comprising;
a first exterior release liner, a first carrier and a central release liner,
a first release coating located on said first exterior release liner, a second release coating located on one side of said central release liner and a third release coating located on the remaining side of said central release liner,
a first pressure sensitive adhesive layer, one side of said first pressure sensitive adhesive layer releasably secured to said first release
coating located on said first exterior liner, the remaining side of the first adhesive layer secured to said first carrier,
a second pressure sensitive adhesive
layer, one side of said second adhesive layer releasably secured to said second release coating located on one side of said central release liner, the remaining side of said second pressure sensitive adhesive layer secured to the remaining side of said first carrier,
a second carrier and a second exterior liner,
a fourth release coating located on said second exterior liner,
a third pressure sensitive adhesive layer, one. side of said third adhesive layer releasably secured to said third release coating located on the remaining side of said central release liner, the remaining side of said third adhesive layer secured to said second carrier,
a fourth pressure sensitive adhesive layer, one side of said fourth adhesive layer secured to said second carrier, and the remaining side of said fourth adhesive layer releasably secured to said fourth release coating located on said second exterior release liner.

13. A method of adhering one item to another item through a composite pressure sensitive adhesive construction, comprising the steps of;
releasably attaching a first pressure sensitive adhesive layer to a first exterior release liner having a release coating thereon;
releasably attaching a central release liner to said first pressure sensitive adhesive layer, releasably attaching a second pressure sensitive adhesive layer to a second exterior release liner having a release coating thereon,
removing said first exterior release liner from said first pressure sensitive adhesive layer,
applying said first pressur sensitive adhesive layer to one item,
removing said second exterior release liner from said second pressure adhesive layer,
applying said second pressure adhesive layer to another item, and
removing said central release liner and contacting said first adhesive layer and said second adhesive layer to form a bond.

14. A method of adhering one item to another item through a composite pressure sensitive adhesive construction, comprising the steps of;

releasably attaching a first pressure sensitive adhesive layer to a first exterior release liner having a release coating thereon,
attaching a carrier layer to said first pressure sensitive adhesive layer,
attaching a second pressure sensitive adhesive layer to said carrier layer,
releasably attaching a central release liner to said second pressure sensitive adhesive layer,
releasably attaching a fourth pressure
sensitive adhesive layer to a second exterior release liner having a release coating thereon,
attaching a second carrier layer to said fourth, pressure sensitive adhesive layer,
attaching a third pressure sensitive adhesive layer to said second carrier layer,
releasably attaching said central release liner to said third pressure sensitive adhesive layer,
removing said first exterior release liner from said first pressure sensitive adhesive layer,
applying said first pressure sensitive adhesive layer to one item,
removing said second exterior release liner from said fourth pressure sensitive adhesive layer,
applying said fourth, pressure sensitive
adhesive layer to another item, and
removing said central release liner and
contacting said second adhesive layer with said third adhesive layer to form a bond.

15. A method of adhering one item to
another item through a composite pressure sensitive adhesive construction, comprising the steps of;

unwinding a self-wound pressure sensitive roll construction to release a second pressure
sensitive adhesive layer from an external release liner, said construction having a first pressure
sensitive adhesive layer releasably attached to
both said external release liner and a central release liner, said construction also having said second
pressure sensitive adhesive layer releasably
attached to both the remaining side of said central release liner and the remaining side of said external release liner,
removing said exterior release liner to expose said first pressure sensitive adhesive layer,
applying said first pressure sensitive adhesive layer to one Item,
applying said second pressure sensitive adhesive layer to another item, and
removing said central release liner and contacting said first adhesive layer and said second adhesive layer to form a bond.

16. A method of adhering one item to
another Item through a composite pressure sensitive adhesive construction, comprising the step of;
unwinding a self-wound pressure sensitive roll construction to release a fourth pressure sensitive adhesive layer from an external release liner,
said construction having a carrier layer attached to both a first pressure sensitive adhesive layer and a second pressure sensitive adhesive layer, said construction also having a second carrier layer attached to both a third pressure sensitive adhesive layer and said fourth pressure sensitive adhesive layer,
said construction further having a central release liner releasably attached to both said second pressure sensitive adhesive layer and said third pressure sensitive adhesive layer, said construction finally having said external release liner releasably attached to both said first pressure sensitive
adhesive layer and said fourth pressure sensitive adhesive layer,
removing said exterior release liner to expose said first pressure sensitive adhesive layer
applying said first pressure sensitive adhesive layer to one item,
applying said fourth pressure sensitive adhesive layer to another item, and
removing said central release liner and contacting said second adhesive layer with said third adhesive layer to form a bond.

17. A composite pressure sensitive adhesive, construction, comprising:
(a) an exterior release liner having a contact side;
(b) a pressure sensitive adhesive layer;
(c) a sealant layer having two opposing sides and two termini;
(d) a second pressure sensitive adhesive layer; and
(e) a second exterior release liner having a contact side;
one side of said sealant layer attached to said first pressure sensitive adhesive layer and the remaining side of said sealant layer attached to said second pressure sensitive adhesive layer; said contact side of said first exterior release liner releasably attached to said first pressure sensitive adhesive layer and said contact side of said second exteior release liner releasably attached to said second pressure sensitive adhesive layer.

18. A composite pressure sensitive adhesive construction, according to Claim 17, wherein said first pressure sensitive adhesive layer attaches to a portion of the first side of said sealant layer adjacent to one said terminus.

19. A composite pressure sensitive
adhesive, according to Claim 18, wherein said first exterior release liner and said second exterior release liner have release coatings on their contact sides; and wherein said first external release liner extends beyond said releasable attachment of said first pressure sensitive adhesive layer.

20. A method to seal contiguous items, cσmprising:
(a) peeling a second external release
liner releasably attached to a second pressure
sensitive adhesive layer on a side of a sealant strip;
(b) attaching said second pressure sensitive adhesive layer to a substantial portion of the intersection of the contiguous items;

(c) peeling a first external release liner releasably attached to a first pressure sensitive adhesive layer on the opposite side of said sealant strip; and
(d) cohesively attaching the remaining portion of the second pressure sensitive adhesive layer to said first pressure sensitive adhesive layer.