Patent US4906494A successfully refreshed from Google Patents.
US4906494A
Expired / Lapsed
US
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Antistatic sheet material, package and method of making
Assignee: 3M Co
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Filing: 1988-11-30
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Granted: 1990-03-06
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Expires: 2008-11-30
Abstract
Abstract An antistatic sheet material and package formed therefrom is provided. The laminated sheet material includes a first inner layer which is preferably a coextruded film having a polyolefin ply and second copolymer ply of ethylene-acrylic acid copolymer, ethylene vinyl acetate copolymer, or blends thereof, a second intermediate layer such as a polyester film having an electrically conductive material thereon, and an outer layer of an antistatic material. The laminate may be formed by hot roll lamination or an adhesive may be used between the first and second layers.
Inventors
- 👤 Michael A. Babinec
- 👤 Charles L. Mott
- 👤 David C. Burdeaux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:29
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B38/00; B32B38/0008; B32B7/00; B32B7/02; B32B7/025; B32B7/04; B32B7/12; B65; B65D; B65D31/00; B65D31/02; H; H10; H10W; H10W42/00; H10W42/60; B32B2038/0052; B32B2038/0076; B32B2307/00; B32B2307/20; B32B2307/21; B32B2310/00; B32B2310/08; B32B2310/0875; B32B2310/0887; B32B2311/00; B32B2323/00; B32B2323/04; B32B2367/00; B32B2553/00; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10T; Y10T428/00; Y10T428/13; Y10T428/1334; Y10T428/1338; Y10T428/1352; Y10T428/1355; Y10T428/1359; Y10T428/31504; Y10T428/31678; Y10T428/31681; Y10T428/31692; Y10T428/31786; Y10T428/31797; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/31928; Y10T428/31935
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
90 words
A laminated sheet material adaptable for forming a package, bag, pouch, or the like for containing electrostatically sensitive components comprising: (a) a first inner layer of a coextruded film having a polyolefin ply and a copolymer ply selected from the group consisting of ethylene-acrylic acid copolymers. ethylene-vinyl acetate copolymers and blends thereof. (b) a second intermediate layer having an electrically conductive material deposited thereon laminated to said first inner layer and adjoining said copolymer ply, and (c) an outer layer of an antistatic material, said opposite said first inner layer.
Claim 2
Dependent Claim
90 words
A laminated sheet material adaptable for forming a package, bag, pouch, or the like for containing electrostatically sensitive components comprising: (a) a first inner layer of a coextruded film having a polyolefin ply and a copolymer ply selected from the group consisting of ethylene-acrylic acid copolymers. ethylene-vinyl acetate copolymers and blends thereof. (b) a second intermediate layer having an electrically conductive material deposited thereon laminated to said first inner layer and adjoining said copolymer ply, and (c) an outer layer of an antistatic material, said opposite said first inner layer.
Claim 3
Dependent Claim
15 words
The laminated sheet material of claim 1 in which said inner layer has antistatic properties.
Claim 4
Dependent Claim
24 words
The laminated sheet material of claim 2 in which said antistatic material is a cured acrylate monomer-oligomer mixture containing an alkylether triethyl ammonium sulfate.
Claim 5
Dependent Claim
16 words
The laminated sheet material of claim 1 wherein said second intermediate layer is a polyester film.
Claim 6
Dependent Claim
28 words
The laminated sheet material of claim 1 wherein said electrically conductive material on said second intermediate layer adjoins an ethylene-acrylic acid copolymer ply of said first inner layer.
Claim 7
Dependent Claim
30 words
The laminated sheet material of claim 5 in Which said electrically conductive material is a metal selected from the group consisting of aluminum, stainless steel, nickel, copper, and mixtures thereof.
Claim 8
Dependent Claim
117 words
A laminated sheet material adaptable for forming a package, bag, pouch, or the like for containing electrostatically sensitive components comprising: (a) a first inner layer of a coextruded film having a polyolefin ply and a copolymer ply selected from the group consisting of ethylene-acrylic acid copolymers, ethylene-vinyl acetate copolymers, and blends thereof, (b) a second intermediate layer having an electrically conductive material deposited thereon. (c) a layer of adhesive between said first layer and said second layer bonding said first layer to said second layer with said copolymer ply adjoining said layer of adhesive, and (d) an outer antistatic surface, said outer surface being located on the side of said second layer opposite said first inner layer.
Claim 9
Dependent Claim
117 words
A laminated sheet material adaptable for forming a package, bag, pouch, or the like for containing electrostatically sensitive components comprising: (a) a first inner layer of a coextruded film having a polyolefin ply and a copolymer ply selected from the group consisting of ethylene-acrylic acid copolymers, ethylene-vinyl acetate copolymers, and blends thereof, (b) a second intermediate layer having an electrically conductive material deposited thereon. (c) a layer of adhesive between said first layer and said second layer bonding said first layer to said second layer with said copolymer ply adjoining said layer of adhesive, and (d) an outer antistatic surface, said outer surface being located on the side of said second layer opposite said first inner layer.
Claim 10
Dependent Claim
23 words
The laminated sheet material of claim 7 in which said polyolefin ply is a polyethylene and said second layer is a polyester film.
Claim 11
Dependent Claim
28 words
The laminated sheet material of claim 8 in which said electrically conductive material is selected from the group consisting of aluminum, stainless steel, nickel, copper, and mixtures thereof.
Claim 12
Dependent Claim
22 words
The laminated sheet of claim 9 wherein said antistatic material is a cured acrylate monomer-oligomer mixture containing an alkylether triethyl ammonium sulfate.
Claim 13
Dependent Claim
94 words
A laminated sheet material adaptable for forming a package, bag, pouch, or the like for containing electrostatically sensitive components comprising: (a) a first inner layer of a polyolefin film having antistatic properties. (b) a second intermediate layer having an electrically conductive material deposited thereon, (c) a layer of adhesive between said first layer and said second layer with said electrically conductive material of said second layer adjoining said layer of adhesive, and (d) an outer antistatic surface, said outer surface being located on the side of said second layer opposite said first inner layer.
Claim 14
Dependent Claim
94 words
A laminated sheet material adaptable for forming a package, bag, pouch, or the like for containing electrostatically sensitive components comprising: (a) a first inner layer of a polyolefin film having antistatic properties. (b) a second intermediate layer having an electrically conductive material deposited thereon, (c) a layer of adhesive between said first layer and said second layer with said electrically conductive material of said second layer adjoining said layer of adhesive, and (d) an outer antistatic surface, said outer surface being located on the side of said second layer opposite said first inner layer.
Claim 15
Dependent Claim
15 words
The laminated sheet material of claim 11 wherein said second layer is a polyester film.
Claim 16
Dependent Claim
28 words
The laminated sheet material of claim 12 in which said electrically conductive material is selected from the group consisting of aluminum, stainless steel, nickel, copper, and mixtures thereof.
Claim 17
Dependent Claim
23 words
The laminated sheet material of claim 13 wherein said antistatic material is a cured acrylate monomer-oligomer mixture containing an alkylether triethyl ammonium sulfate.
Claim 18
Dependent Claim
125 words
A package adapted to receive and protect an electrostatically sensitive component, the walls of said package formed of an antistatic sheet material comprising: (a) a first inner layer of a coextruded film having a polyolefin ply and a copolymer ply selected from the group consisting of ethylene-acrylic acid copolymers, ethylene-vinyl acetate copolymers, and blends thereof, (b) a second layer having an electrically conductive material deposited thereon laminated to said first inner layer and adjoining said copolymer ply, and (c) an outer layer of an antistatic material, said outer layer being located on the side of said second layer opposite said first layer. said package being formed by joining together said walls along opposing side edges of facing first inner layers of said antistatic sheet material.
Claim 19
Dependent Claim
125 words
A package adapted to receive and protect an electrostatically sensitive component, the walls of said package formed of an antistatic sheet material comprising: (a) a first inner layer of a coextruded film having a polyolefin ply and a copolymer ply selected from the group consisting of ethylene-acrylic acid copolymers, ethylene-vinyl acetate copolymers, and blends thereof, (b) a second layer having an electrically conductive material deposited thereon laminated to said first inner layer and adjoining said copolymer ply, and (c) an outer layer of an antistatic material, said outer layer being located on the side of said second layer opposite said first layer. said package being formed by joining together said walls along opposing side edges of facing first inner layers of said antistatic sheet material.
Claim 20
Dependent Claim
13 words
The package of claim 15 in which said first layer has antistatic properties.
Claim 21
Dependent Claim
20 words
The package of claim 15 including releasable, interlocking closure means on opposing inner faces of one end of said walls.
Claim 22
Dependent Claim
32 words
The package of claim 17 in which said closure means comprise interlocking rib and groove elements fabricated of a polyolefin polymer which has been treated with an antistatic agent and/or semiconductive filler.
Claim 23
Dependent Claim
23 words
The package of claim 15 in which said antistatic material is a cured acrylate monomer oligomer mixture containing an alkylether triethyl ammonium sulfate.
Claim 24
Dependent Claim
126 words
A package adapted to receive and protect an electrostatically sensitive component, the walls of said package formed of an antistatic sheet material comprising: (a) a first inner layer of a polyolefin film having antistatic properties; (b) a second layer having an electrically conductive material deposited thereon. (c) a layer of adhesive between said firs layer and said second layer bonding said first layer to said second layer, with said electrically conductive material of said second layer adjoining said layer of adhesive, and (d) an outer antistatic surface, said outer surface being located on the side of said second layer opposite said first inner layer. said package being formed by joining together said walls along opposing side edges of facing first layers of said antistatic sheet material.
Claim 25
Dependent Claim
126 words
A package adapted to receive and protect an electrostatically sensitive component, the walls of said package formed of an antistatic sheet material comprising: (a) a first inner layer of a polyolefin film having antistatic properties; (b) a second layer having an electrically conductive material deposited thereon. (c) a layer of adhesive between said firs layer and said second layer bonding said first layer to said second layer, with said electrically conductive material of said second layer adjoining said layer of adhesive, and (d) an outer antistatic surface, said outer surface being located on the side of said second layer opposite said first inner layer. said package being formed by joining together said walls along opposing side edges of facing first layers of said antistatic sheet material.
Claim 26
Dependent Claim
22 words
The package of claim 20 in which said polyolefin film is a polyethylene film and said second layer is a polyester film.
Claim 27
Dependent Claim
28 words
The package of claim 21 in which said electrically conductive material is a metal selected from the group consisting of aluminum, stainless steel, nickel, copper, and mixtures thereof.
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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) | 1993-03-05 | 1993-09-04 | 1994-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-03-05 | 1997-09-04 | 1998-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-03-05 | 2001-09-04 | 2002-03-06 | $7700.00 | Window Closed / Lapsed |