US4599131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Delabeler for plastic containers
Assignee: Graham Packaging Plastic Products Inc
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Filing: 1985-06-10
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Granted: 1986-07-08
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Expires: 2005-06-10
Abstract
Abstract A plastic bottle delabeling apparatus in which a series of heated rolls that are driven at increasingly greater peripheral velocity engage the plastic bottles to flatten and stretch the bottles. While flattening the bottles, the apparatus heats the plastic bottle surface by the contact with the heated rolls, effectively softening the bond of any label to the bottle. The flattened bottle is then passed through a pair of opposed rotating brush rolls which strip the loosened label from the bottle. The rolls are in vertically opposed sets with the peripheral velocity of the sets of rolls being successively greater in the direction of movement of the bottles therebetween.
Inventors
- 👤 John J. Matuszak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:42
CPC Classifications
B; B29; B29B; B29B17/00; B29B17/02; B08; B08B; B08B9/00; B08B9/08; B08B9/083; B30; B30B; B30B9/00; B30B9/32; B30B9/321; B30B9/325; B29B2017/0203; B29K; B29K2711/00; B29K2711/12; B29L; B29L2031/00; B29L2031/712; B29L2031/7158; B29L2031/744; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/62; Y10; Y10S; Y10S156/00; Y10S156/918; Y10S156/919; Y10S156/921; Y10S156/934; Y10S156/935; Y10S264/00; Y10S264/911; Y10S264/918; Y10T; Y10T156/00; Y10T156/11; Y10T156/1142; Y10T156/19
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
158 words
Apparatus for removing extraneous material from plastic containers for recycling of the plastic, comprising an infeed conveyor, a first series of horizontal rolls in line with said conveyor, a second series of horizontal rolls positioned above said first series, means mounting said second series of rolls at progressively less vertical distance from said first series of rolls in a direction away from said infeed conveyor, means for driving said first series of rolls at progressively greater velocities the further the roll is from the infeed conveyor, means connected to said rolls for heating said rolls, a pair of vertically opposed wire brush rolls positioned adjacent the last heated rolls, means for driving said brush rolls at a much lesser peripheral velocity than said heated rolls and in an opposed direction to the movement of a container therebetween, and a pair of opposed, driven pull rolls positioned adjacent said brush rolls, for pulling flattened containers from the brush rolls.
Claim 2
Dependent Claim
158 words
Apparatus for removing extraneous material from plastic containers for recycling of the plastic, comprising an infeed conveyor, a first series of horizontal rolls in line with said conveyor, a second series of horizontal rolls positioned above said first series, means mounting said second series of rolls at progressively less vertical distance from said first series of rolls in a direction away from said infeed conveyor, means for driving said first series of rolls at progressively greater velocities the further the roll is from the infeed conveyor, means connected to said rolls for heating said rolls, a pair of vertically opposed wire brush rolls positioned adjacent the last heated rolls, means for driving said brush rolls at a much lesser peripheral velocity than said heated rolls and in an opposed direction to the movement of a container therebetween, and a pair of opposed, driven pull rolls positioned adjacent said brush rolls, for pulling flattened containers from the brush rolls.
Claim 3
Dependent Claim
29 words
The apparatus of claim 1 further including adjustable force applying means for biasing the heated rolls of said second series in the direction of said first series of rolls.
Claim 4
Dependent Claim
27 words
The apparatus of claim 2 wherein said biasing means applies a high force to the last two rolls in the second series relative to the first series.
Claim 5
Dependent Claim
15 words
The apparatus of claim 1 wherein said first series of rolls is five in number.
Claim 6
Dependent Claim
15 words
The apparatus of claim 1 wherein said second series of rolls is six in number.
Claim 7
Dependent Claim
32 words
The apparatus of claim 1 wherein said means for mounting said second set of rolls comprises an angularly adjustable frame supporting the ends of said rolls and means for raising the frame.
Claim 8
Dependent Claim
34 words
The apparatus of claim 1 wherein a plurality of said rolls of said first and second sets of rolls are heated to a temperature sufficient to soften the plastic of the containers passing therethrough.
Claim 9
Dependent Claim
31 words
The apparatus of claim 7 wherein said extraneous materials are labels adhesively attached to said containers and said heated rolls effectively melt the adhesive for easy removal from said flattened containers.
Claim 10
Dependent Claim
30 words
The apparatus of claim 1 further including a pair of vertically opposed wire brush rolls adapted to engage a flattened bottle exiting from the first and second series of rolls.
Claim 11
Dependent Claim
39 words
The apparatus of claim 9 further including a pair of horizontal nip rolls positioned in vertical alignment adjacent the exit from said brush rolls and drive means for rotating said nip rolls for pulling the bottles through the brushes.
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) | 1989-07-07 | 1990-01-06 | 1990-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-07 | 1994-01-06 | 1994-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-07 | 1998-01-06 | 1998-07-08 | $7700.00 | Window Closed / Lapsed |