US6099682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cold seal package and method for making the same
Assignee: 3M Innovative Properties Co
•
Filing: 1998-02-09
•
Granted: 2000-08-08
•
Expires: 2018-02-09
Abstract
Abstract The present invention is directed to a cold seal package that includes constructions wherein two substrates, or two portions of one substrate, are sealingly engaged to one another using a substantially natural latex rubber-free contact adhesive. The two substrates can be easily peeled apart without substantial damage to the substrates. Furthermore, the substrates cannot typically be resealed, or refastened, once peeled apart. That is, the cold seal formed by the adhesive between the substrates is substantially non-refastenable. Advantageously, a cold seal package of the present invention is particularly well suited for aseptic delivery of packaged goods, such as bandages, dressings, and the like.
Inventors
- 👤 Stephen E. Krampe
- 👤 Michael D. Delmore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:36
CPC Classifications
B; B65; B65D; B65D75/00; B65D75/52; B65D75/58; B65D75/5855; Y; Y10; Y10S; Y10S229/00; Y10S229/901; Y10S428/00; Y10S428/914; Y10T; Y10T428/00; Y10T428/14; Y10T428/1424; Y10T428/1462; Y10T428/1481; Y10T428/1486; Y10T428/24; Y10T428/24777; Y10T428/24793; Y10T428/31504; Y10T428/3154; Y10T428/31544; Y10T428/31725; Y10T428/31786; Y10T428/31801; Y10T428/31855; Y10T428/31935
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
158 words
A method for making a cold seal package comprising: applying a first substantially natural latex rubber-free contact adhesive to an anchor surface to form an anchor contact adhesive coating; applying a release coating composition to a transfer surface to form a release-coated transfer surface; applying a second substantially natural latex rubber-free contact adhesive to the release-coated transfer surface to form a transfer contact adhesive coating; and contacting the anchor contact adhesive coating with the transfer contact adhesive coating, each of which are at a temperature of about 50° C. or less, to form a substantially non-refastenable cold seal between the anchor surface and the release-coated transfer surface; wherein, upon peeling the anchor and transfer surfaces apart, substantially all of the anchor contact adhesive coating and the transfer contact adhesive coating that formed the cold seal remain on the anchor surface; wherein the release coating composition comprises a release material blended with a substantially natural latex rubber-free contact adhesive.
Claim 2
Independent Claim
158 words
A method for making a cold seal package comprising: applying a first substantially natural latex rubber-free contact adhesive to an anchor surface to form an anchor contact adhesive coating; applying a release coating composition to a transfer surface to form a release-coated transfer surface; applying a second substantially natural latex rubber-free contact adhesive to the release-coated transfer surface to form a transfer contact adhesive coating; and contacting the anchor contact adhesive coating with the transfer contact adhesive coating, each of which are at a temperature of about 50° C. or less, to form a substantially non-refastenable cold seal between the anchor surface and the release-coated transfer surface; wherein, upon peeling the anchor and transfer surfaces apart, substantially all of the anchor contact adhesive coating and the transfer contact adhesive coating that formed the cold seal remain on the anchor surface; wherein the release coating composition comprises a release material blended with a substantially natural latex rubber-free contact adhesive.
Claim 3
Dependent Claim
28 words
The method of claim 1 wherein the first substantially natural latex rubber-free contact adhesive and the second substantially natural latex rubber-free contact adhesive comprise the same contact adhesive.
Claim 4
Dependent Claim
27 words
The method of claim 1 wherein the first substantially natural latex rubber-free contact adhesive and the second substantially natural latex rubber-free contact adhesive comprise different contact adhesives.
Claim 5
Dependent Claim
22 words
The method of claim 1 further comprising treating the anchor surface prior to applying the first substantially natural latex rubber-free contact adhesive.
Claim 6
Dependent Claim
16 words
The method of claim 4 wherein treating the anchor surface comprises corona treating the anchor surface.
Claim 7
Dependent Claim
33 words
The method of claim 1 wherein applying a release coating composition comprises applying a release coating composition to a transfer surface to form a substantially continuous release coating on the release-coated transfer surface.
Claim 8
Dependent Claim
19 words
The method of claim 6 wherein the substantially continuous release coating composition is pattern coated on the transfer surface.
Claim 9
Dependent Claim
35 words
The method of claim 1 wherein the first and second substantially natural latex rubber-free contact adhesives have an open time of at least about 24 hours at a temperature of about 50° C. or less.
Claim 10
Dependent Claim
18 words
The method of claim 1 wherein the anchor surface and the transfer surface are on two separate substrates.
Claim 11
Dependent Claim
12 words
The method of claim 9 wherein each substrate comprises a polymeric film.
Claim 12
Dependent Claim
14 words
The method of claim 10 wherein the polymeric film comprises a high density polyethylene.
Claim 13
Dependent Claim
23 words
The method of claim 1 wherein the anchor surface and the transfer surface are on two different portions of a contiguous sheet material.
Claim 14
Dependent Claim
28 words
The method of claim 12 wherein the anchor surface and the transfer surface are each on a different portion of a first major surface of the sheet material.
Claim 15
Dependent Claim
36 words
The method of claim 12 wherein the anchor surface is on a portion of a first major surface of the sheet material and the transfer surface is on a second major surface of the sheet material.
Claim 16
Dependent Claim
23 words
The method of claim 1 wherein the anchor surface and the transfer surface each comprise a first major surface of separate sheet materials.
Claim 17
Dependent Claim
19 words
The method of claim 15 further comprising printing graphic indicia on at least one of the separate sheet materials.
Claim 18
Dependent Claim
23 words
The method of claim 1 wherein contacting the adhesive coatings to form a substantially non-refastenable cold seal produces an enclosure within the package.
Claim 19
Dependent Claim
27 words
The method of claim 17 further comprising placing a medical product in the enclosure before sealing the package and sterilizing the medical product after sealing the package.
Claim 20
Dependent Claim
70 words
The method of claim 1 wherein the release coating composition comprises a release material selected from the group of an ethyl acrylate-acrylonitrile copolymer, an acrylic acid-alkyl acrylate copolymer, a polyvinyl chloride resin, a polyvinyl N-octadecyl carbamate, a polyethylene based wax, a polyamide based wax, a polysiloxane, a fluorocarbon polymer, a polyvinyl ester, a polyethylene imine, an alkyl substituted amine, a chromium complex, a fatty acid based wax, and mixtures thereof.
Claim 21
Dependent Claim
59 words
The method of claim 1 wherein the first and second substantially natural latex rubber-free contact adhesives each comprise a material selected from the group of a polychloroprene, a polyurethane, a styrene-isoprene copolymer, a styrene-butadiene copolymer, a polyimide, a polyvinyl chloride, a nitrocellulose, a polyisoprene, an acrylonitrile-butadiene-isoprene terpolymer, a butadiene-methacrylonitrile copolymer, a polyethylene-vinyl acetate copolymer, a polyacrylate, and mixtures thereof.
Claim 22
Dependent Claim
27 words
The method of claim 20 wherein at least one of the first and second substantially natural latex rubber-free contact adhesives is formed from an aqueous polyurethane dispersion.
Claim 23
Dependent Claim
11 words
A cold seal package produced by the method of claim 1.
Claim 24
Independent Claim
149 words
A method for making a cold seal package comprising: applying a first substantially natural latex rubber-free contact adhesive to an anchor surface to form an anchor contact adhesive coating; applying a release coating composition to a transfer surface to form a substantially continuous pattern-coated release coating thereon thereby forming a release-coated transfer surface; applying a second substantially natural latex rubber-free contact adhesive to the release-coated transfer surface to form a transfer contact adhesive coating; and contacting the anchor contact adhesive coating with the transfer contact adhesive coating, each of which are at a temperature of about 50° C. or less, to form a substantially non-refastenable cold seal between the anchor surface and the release-coated transfer surface; wherein, upon peeling the anchor and transfer surfaces apart, substantially all of the anchor contact adhesive coating and the transfer contact adhesive coating that formed the cold seal remain on the anchor surface.
Claim 25
Independent Claim
149 words
A method for making a cold seal package comprising: applying a first substantially natural latex rubber-free contact adhesive to an anchor surface to form an anchor contact adhesive coating; applying a release coating composition to a transfer surface to form a substantially continuous pattern-coated release coating thereon thereby forming a release-coated transfer surface; applying a second substantially natural latex rubber-free contact adhesive to the release-coated transfer surface to form a transfer contact adhesive coating; and contacting the anchor contact adhesive coating with the transfer contact adhesive coating, each of which are at a temperature of about 50° C. or less, to form a substantially non-refastenable cold seal between the anchor surface and the release-coated transfer surface; wherein, upon peeling the anchor and transfer surfaces apart, substantially all of the anchor contact adhesive coating and the transfer contact adhesive coating that formed the cold seal remain on the anchor surface.
Claim 26
Dependent Claim
11 words
A cold seal package produced by the method of claim 23.
Claim 27
Independent Claim
158 words
A method for making a cold seal package comprising: applying a first substantially natural latex rubber-free contact adhesive to an anchor surface to form an anchor contact adhesive coating; applying a release coating composition to a transfer surface to form a release-coated transfer surface wherein the anchor surface and the transfer surface are on two different portions of a contiguous sheet material; applying a second substantially natural latex rubber-free contact adhesive to the release-coated transfer surface to form a transfer contact adhesive coating; and contacting the anchor contact adhesive coating with the transfer contact adhesive coating, each of which are at a temperature of about 50° C. or less, to form a substantially non-refastenable cold seal between the anchor surface and the release-coated transfer surface; wherein, upon peeling the anchor and transfer surfaces apart, substantially all of the anchor contact adhesive coating and the transfer contact adhesive coating that formed the cold seal remain on the anchor surface.
Claim 28
Independent Claim
158 words
A method for making a cold seal package comprising: applying a first substantially natural latex rubber-free contact adhesive to an anchor surface to form an anchor contact adhesive coating; applying a release coating composition to a transfer surface to form a release-coated transfer surface wherein the anchor surface and the transfer surface are on two different portions of a contiguous sheet material; applying a second substantially natural latex rubber-free contact adhesive to the release-coated transfer surface to form a transfer contact adhesive coating; and contacting the anchor contact adhesive coating with the transfer contact adhesive coating, each of which are at a temperature of about 50° C. or less, to form a substantially non-refastenable cold seal between the anchor surface and the release-coated transfer surface; wherein, upon peeling the anchor and transfer surfaces apart, substantially all of the anchor contact adhesive coating and the transfer contact adhesive coating that formed the cold seal remain on the anchor surface.
Claim 29
Dependent Claim
11 words
A cold seal package produced by the method of claim 25.
Claim 30
Independent Claim
172 words
A method for making a cold seal package comprising: applying a first substantially natural latex rubber-free contact adhesive to an anchor surface to form an anchor contact adhesive coating, wherein the anchor surface is part of a substrate comprising a high density polyethylene polymeric film; applying a release coating composition to a transfer surface to form a release-coated transfer surface, wherein the transfer surface is part of a substrate comprising a high density polyethylene polymeric film; applying a second substantially natural latex rubber-free contact adhesive to the release-coated transfer surface to form a transfer contact adhesive coating; and contacting the anchor contact adhesive coating with the transfer contact adhesive coating, each of which are at a temperature of about 50° C. or less, to form a substantially non-refastenable cold seal between the anchor surface and the release-coated transfer surface; wherein, upon peeling the anchor and transfer surfaces apart, substantially all of the anchor contact adhesive coating and the transfer contact adhesive coating that formed the cold seal remain on the anchor surface.
Claim 31
Independent Claim
172 words
A method for making a cold seal package comprising: applying a first substantially natural latex rubber-free contact adhesive to an anchor surface to form an anchor contact adhesive coating, wherein the anchor surface is part of a substrate comprising a high density polyethylene polymeric film; applying a release coating composition to a transfer surface to form a release-coated transfer surface, wherein the transfer surface is part of a substrate comprising a high density polyethylene polymeric film; applying a second substantially natural latex rubber-free contact adhesive to the release-coated transfer surface to form a transfer contact adhesive coating; and contacting the anchor contact adhesive coating with the transfer contact adhesive coating, each of which are at a temperature of about 50° C. or less, to form a substantially non-refastenable cold seal between the anchor surface and the release-coated transfer surface; wherein, upon peeling the anchor and transfer surfaces apart, substantially all of the anchor contact adhesive coating and the transfer contact adhesive coating that formed the cold seal remain on the anchor surface.
Claim 32
Dependent Claim
11 words
A cold seal package produced by the method of claim 27.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-08-08 | 2004-02-07 | 2004-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-08-08 | 2008-02-07 | 2008-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-08-08 | 2012-02-07 | 2012-08-08 | $7700.00 | Window Closed / Lapsed |