US4581262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coextruded multilayer sheet and sleeve label made therefrom
Assignee: Graham Packaging Plastic Products Inc
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Filing: 1985-01-14
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Granted: 1986-04-08
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Expires: 2005-01-14
Abstract
Abstract A coextruded multilayer sheet adapted for use as a tough, solvent seal label sleeve on containers, the sheet comprising a foam layer for use on the inside of the sleeve next to the container and an outer decoratable solid skin layer, the skin layer and foam layer being coextruded from an extrudable blend comprising about 30 to 60 wt. % high density polyethylene, about 30 to 50 wt. % of a block copolymer of styrene and butadiene as a compatibility agent, and about 10 to 30 wt. % polystyrene, the resultant sleeve label being tough, and easily solvent sealable on a high speed production basis. The sleeve label can also be sealed by ultrasonic, hot air and heat sealing.
Inventors
- 👤 James A. Karabedian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:59
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/065; B32B27/32; B32B27/08; B32B37/00; B32B37/14; B32B37/15; B32B37/153; B32B5/00; B32B5/18; B65; B65D; B65D23/00; B65D23/08; B65D23/0842; B65D23/085; B32B2307/00; B32B2307/50; B32B2307/558; B32B2519/00; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/131; Y10T428/1317; Y10T428/1321; Y10T428/1352; Y10T428/1355; Y10T428/1359; Y10T428/1376; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/249988; Y10T428/249991; Y10T428/249992; Y10T428/249993; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/31917
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
149 words
A coextruded multilayer sheet adapted for use as a solvent seal label sleeve on containers in which the sleeve ends are overlapped to form a side seam, the side seam of the sleeve also being sealable by ultrasonic, hot air and heat sealing, the sheet comprising a foam layer for the use on the inside of the sleeve next to the container and an outer solid skin layer, the skin layer and foam layer being coextruded from an extrudable blend comprising about 35 wt. % up to about 60% of high density polyethylene, about 10 to 30 wt. % polystyrene and about 30 to 50 wt. % of a compatibility agent that is compatible with the polyethylene and the polystyrene to provide limited compatibility and adhesion at the interface of the skin and foam layer, the resultant label being attractive, tough and sealable on a high speed production basis.
Claim 2
Dependent Claim
149 words
A coextruded multilayer sheet adapted for use as a solvent seal label sleeve on containers in which the sleeve ends are overlapped to form a side seam, the side seam of the sleeve also being sealable by ultrasonic, hot air and heat sealing, the sheet comprising a foam layer for the use on the inside of the sleeve next to the container and an outer solid skin layer, the skin layer and foam layer being coextruded from an extrudable blend comprising about 35 wt. % up to about 60% of high density polyethylene, about 10 to 30 wt. % polystyrene and about 30 to 50 wt. % of a compatibility agent that is compatible with the polyethylene and the polystyrene to provide limited compatibility and adhesion at the interface of the skin and foam layer, the resultant label being attractive, tough and sealable on a high speed production basis.
Claim 3
Dependent Claim
39 words
A sheet as defined in claim 1 in which the blend is about 38 to 45 wt. % high density polyethylene, about 38 to 45 wt. % of the compatibility agent, and about 15 to 25 wt. % polystyrene.
Claim 4
Dependent Claim
33 words
A sheet as defined in claim 1 in which the blend is about 40 wt. % high density polyethylene, about 40 wt. % of the compatibility agent and about 20 wt. % polystyrene.
Claim 5
Dependent Claim
23 words
A sheet as defined in claim 1 in which methylene chloride is used to solvent seal the side seam of the sleeve label.
Claim 6
Dependent Claim
26 words
A sheet as defined in claim 1 in which the blend includes an antioxidant to prevent degradation of the blend by exposure to heat and oxygen.
Claim 7
Dependent Claim
31 words
A sheet as defined in claim 1 in which the blend is about 40 wt. % high density polyethylene, about 20 wt. % compatibility agent, and about 40 wt. % polystyrene.
Claim 8
Dependent Claim
135 words
A coextruded multilayer sheet adapted for use as a solvent seal label sleeve on containers, the sleeve also being sealable by ultrasonic, hot air and heat sealing, the sheet comprising a foam layer for use on the inside of the sleeve next to the container and a outer decoratable solid skin layer capable of forming a seal seam bond with the foam layer, the skin layer and foam layer being coextruded from an extrudable blend comprising about 38 to 45 wt. % high density polyethylene, about 30 to 50 wt. % of a block copolymer of styrene and butadiene containing about 35 to 55 wt. % bound styrene as a compatibility agent, and about 15 to 25 wt. % polystyrene, the resultant sleeve label being tough, and solvent sealable on a high speed production basis.
Claim 9
Dependent Claim
135 words
A coextruded multilayer sheet adapted for use as a solvent seal label sleeve on containers, the sleeve also being sealable by ultrasonic, hot air and heat sealing, the sheet comprising a foam layer for use on the inside of the sleeve next to the container and a outer decoratable solid skin layer capable of forming a seal seam bond with the foam layer, the skin layer and foam layer being coextruded from an extrudable blend comprising about 38 to 45 wt. % high density polyethylene, about 30 to 50 wt. % of a block copolymer of styrene and butadiene containing about 35 to 55 wt. % bound styrene as a compatibility agent, and about 15 to 25 wt. % polystyrene, the resultant sleeve label being tough, and solvent sealable on a high speed production basis.
Claim 10
Dependent Claim
110 words
A coextruded two layer sheet adapted for use as a solvent seal label sleeve on containers, the sheet comprising a foam layer for use on the inside of the sleeve next to the container and a outer decoratable solid skin layer capable of forming a solvent seal seam bond with the foam layer, the skin layer and foam layer being coextruded from an extrudable blend comprising about 40 wt. % high density polyethylene, about 40 wt. % of a block copolymer of styrene and butadiene as a compatbility agent, and about 20 wt. % polystyrene, the resultant sleeve label being tough, and solvent sealable on a high speed production basis.
Claim 11
Dependent Claim
110 words
A coextruded two layer sheet adapted for use as a solvent seal label sleeve on containers, the sheet comprising a foam layer for use on the inside of the sleeve next to the container and a outer decoratable solid skin layer capable of forming a solvent seal seam bond with the foam layer, the skin layer and foam layer being coextruded from an extrudable blend comprising about 40 wt. % high density polyethylene, about 40 wt. % of a block copolymer of styrene and butadiene as a compatbility agent, and about 20 wt. % polystyrene, the resultant sleeve label being tough, and solvent sealable on a high speed production basis.
Claim 12
Dependent Claim
125 words
A sheet sleeve label in combination with a container that is an oriented PET carbonated beverage bottle, the sheet comprising a foam layer for use on the inside of the sleeve next to the container and an outer decoratable solid skin layer capable of forming a seal seam bond with the foam layer, the skin layer and foam layer being coextruded from an extrudable blend comprising about 38 to 45 wt. % high density polyethylene, about 30 to 50 wt. % of a block copolymer of styrene and butadiene containing about 35 to 55 wt. % bound styrene as a compatibility agent, and about 15 to 25 wt. % polystyrene, the resultant sleeve label being tough, and solvent sealable on a high speed production basis.
Claim 13
Dependent Claim
125 words
A sheet sleeve label in combination with a container that is an oriented PET carbonated beverage bottle, the sheet comprising a foam layer for use on the inside of the sleeve next to the container and an outer decoratable solid skin layer capable of forming a seal seam bond with the foam layer, the skin layer and foam layer being coextruded from an extrudable blend comprising about 38 to 45 wt. % high density polyethylene, about 30 to 50 wt. % of a block copolymer of styrene and butadiene containing about 35 to 55 wt. % bound styrene as a compatibility agent, and about 15 to 25 wt. % polystyrene, the resultant sleeve label being tough, and solvent sealable on a high speed production basis.
Claim 14
Dependent Claim
114 words
A container and a sheet sleeve label therefor, the sheet comprising a foam layer for the use on the inside of the sleeve next to the container and an outer solid skin layer, the skin layer and foam layer being coextruded from an extrudable blend comprising about 35 wt. % up to about 60% of high density polyethylene, about 10 to 30 wt. % polystyrene and about 30 to 50 wt. % of a compatibility agent that is compatible with the polyethylene and the polystyrene to provide limited compatibility and adhesion at the interface of the skin and foam layer, the resultant label being attractive, tough and sealable on a high speed production basis.
Claim 15
Dependent Claim
114 words
A container and a sheet sleeve label therefor, the sheet comprising a foam layer for the use on the inside of the sleeve next to the container and an outer solid skin layer, the skin layer and foam layer being coextruded from an extrudable blend comprising about 35 wt. % up to about 60% of high density polyethylene, about 10 to 30 wt. % polystyrene and about 30 to 50 wt. % of a compatibility agent that is compatible with the polyethylene and the polystyrene to provide limited compatibility and adhesion at the interface of the skin and foam layer, the resultant label being attractive, tough and sealable on a high speed production basis.
Claim 16
Dependent Claim
19 words
A sheet sleeve label and container as defined in claim 10 in which the container is a glass container.
Claim 17
Dependent Claim
22 words
A sheet sleeve label and container as defined in claim 10 in which the container is an oriented PET carbonated beverage bottle.
Claim 18
Dependent Claim
18 words
A sheet sleeve label and container as defined in claim 10 in which the container is a can.
Claim 19
Dependent Claim
106 words
An oriented plastic carbonated beverage container and a sheet sleeve label therefor, the sheet comprising a foam layer for use on the inside of the sleeve next to the container and an outer decoratable solid skin layer capable of forming a solvent seal seam bond with the foam layer, the skin layer and foam layer being coextruded from an extrudable blend comprising about 40 wt. % high density polyethylene, about 40 wt. % of a block copolymer of styrene and butadiene as a compatibility agent, and about 20 wt. % polystyrene, the resultant sleeve label being tough, and solvent sealable on a high speed production basis.
Claim 20
Dependent Claim
106 words
An oriented plastic carbonated beverage container and a sheet sleeve label therefor, the sheet comprising a foam layer for use on the inside of the sleeve next to the container and an outer decoratable solid skin layer capable of forming a solvent seal seam bond with the foam layer, the skin layer and foam layer being coextruded from an extrudable blend comprising about 40 wt. % high density polyethylene, about 40 wt. % of a block copolymer of styrene and butadiene as a compatibility agent, and about 20 wt. % polystyrene, the resultant sleeve label being tough, and solvent sealable on a high speed production basis.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-04-07 | 1989-10-07 | 1990-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-07 | 1993-10-07 | 1994-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-07 | 1997-10-07 | 1998-04-08 | $7700.00 | Window Closed / Lapsed |