US3905280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for welding thermoplastic coated paperboard cartons
Assignee: ELOTRADE AG A SWISS CORP
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Filing: 1973-11-30
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Granted: 1975-09-16
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Expires: 1993-11-30
Abstract
Abstract Apparatus and method for forming sealed joints by welding layers of thermoplastic coated paperboard together. One outer surface of the paperboard layers is placed in engagement with back-up means, and the opposite outer surface of the paperboard layers is engaged by vibrating means so that the thermoplastic coating of the paperboard is heated by the vibration to weld the layers together.
Inventors
- 👤 Harry B Egleston
- 👤 Robert E Lisiecki
- 👤 Duncan J Crawford
- 👤 Eric A Bruan
- 👤 Jr Earl W Walke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:04
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/40; B29C66/49; B29C65/00; B29C65/02; B29C65/08; B29C65/083; B29C65/086; B29C65/78; B29C65/7858; B29C65/7879; B29C65/7882; B29C66/004; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/346; B29C66/349; B29C66/3492; B29C66/3494; B29C66/41; B29C66/43; B29C66/431; B29C66/4312; B29C66/43121; B29C66/43122; B29C66/432; B29C66/4322; B29C66/4326; B29C66/70; B29C66/72; B29C66/723; B29C66/7232; B29C66/72327; B29C66/72328; B29C66/73; B29C66/739; B29C66/7392; B29C66/73921; B29C66/80; B29C66/81; B29C66/814; B29C66/8145; B29C66/81463; B29C66/818; B29C66/8181; B29C66/81811; B29C66/83; B29C66/832; B29C66/8322; B29C66/83221; B29C66/834; B29C66/8351; B29C66/83511; B29C66/84; B29C66/849; B31; B31B; B31B50/00; B31B50/60; B31B50/64; B65; B65B; B65B51/00; B65B51/10; B65B51/22; B65B51/225; B29C65/48; B29C65/4805; B29C65/481; B29C65/4825; B29L; B29L2031/00; B29L2031/712; B29L2031/7162; B29L2031/7166
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
289 words
Apparatus for welding at least two layers of thermoplastic coated paperboard together to form a sealed joint between the layers comprising: back-up means engageable with one outer surface of the paperboard layers; vibrating means engageable with the opposite outer surface of the paperboard layers when said other outer surface is engaged with said back-up means to heat the thermoplastic coating of the paperboard and weld the layers together; said back-up means being movable between operable and inoperable positions with respect to said vibrating means; said back-up means comprising an anvil engageable in its operable position with said one outer surface of the paperboard layers; said anvil being mounted for reciprocable movement between its operable and inoperable positions; said vibrating means movable between operable and inoperable positions with respect to the operable position of the back-up means; said vibrating means comprising a vibrating member reciprocably movable between positions defining the operable and inoperable positions of the vibrating means; said anvil and vibrating means being located at a welding station, and further including conveying means for conveying thermoplastic paperboard cartons having layers to be welded together past said welding station such that the layers to be welded together pass between said anvil and vibrating means; power means for moving said anvil and vibrating means between their respective operable and inoperable positions; carton operated actuating means for said power means, said actuating means being located adjacent said conveyor means and engageable by cartons on said conveying means for actuating said anvil and vibrating means to their respective operable positions when a carton is located at said welding station, and operable to actuate said anvil and vibrating means to their respective inoperable positions when a carton is not located at said welding station.
Claim 2
Dependent Claim
289 words
Apparatus for welding at least two layers of thermoplastic coated paperboard together to form a sealed joint between the layers comprising: back-up means engageable with one outer surface of the paperboard layers; vibrating means engageable with the opposite outer surface of the paperboard layers when said other outer surface is engaged with said back-up means to heat the thermoplastic coating of the paperboard and weld the layers together; said back-up means being movable between operable and inoperable positions with respect to said vibrating means; said back-up means comprising an anvil engageable in its operable position with said one outer surface of the paperboard layers; said anvil being mounted for reciprocable movement between its operable and inoperable positions; said vibrating means movable between operable and inoperable positions with respect to the operable position of the back-up means; said vibrating means comprising a vibrating member reciprocably movable between positions defining the operable and inoperable positions of the vibrating means; said anvil and vibrating means being located at a welding station, and further including conveying means for conveying thermoplastic paperboard cartons having layers to be welded together past said welding station such that the layers to be welded together pass between said anvil and vibrating means; power means for moving said anvil and vibrating means between their respective operable and inoperable positions; carton operated actuating means for said power means, said actuating means being located adjacent said conveyor means and engageable by cartons on said conveying means for actuating said anvil and vibrating means to their respective operable positions when a carton is located at said welding station, and operable to actuate said anvil and vibrating means to their respective inoperable positions when a carton is not located at said welding station.
Claim 3
Dependent Claim
148 words
Apparatus for welding at least two layers of thermoplastic coated paperboard together to form a sealed joint between the layers comprising: back-up means engageable with one outer surface of the paperboard layers; vibrating means engageable with the opposite outer surface of the paperboard layers when said other outer surface is engaged with said back-up means to heat the thermoplastic coating of the paperboard and weld the layers together; said back-up means comprising a side seam mandrel around which a flat carton blank can be wrapped with the edges of the blank overlapping so that the overlapping edges can be welded together with the side seam mandrel insulating surfaces of the blank on the side of the side seam mandrel opposite the overlapping edges from the welding operation, said side seam mandrel comprising a flat platelike member receivable in the space between layers of a flat folded carton blank.
Claim 4
Dependent Claim
148 words
Apparatus for welding at least two layers of thermoplastic coated paperboard together to form a sealed joint between the layers comprising: back-up means engageable with one outer surface of the paperboard layers; vibrating means engageable with the opposite outer surface of the paperboard layers when said other outer surface is engaged with said back-up means to heat the thermoplastic coating of the paperboard and weld the layers together; said back-up means comprising a side seam mandrel around which a flat carton blank can be wrapped with the edges of the blank overlapping so that the overlapping edges can be welded together with the side seam mandrel insulating surfaces of the blank on the side of the side seam mandrel opposite the overlapping edges from the welding operation, said side seam mandrel comprising a flat platelike member receivable in the space between layers of a flat folded carton blank.
Claim 5
Dependent Claim
293 words
Apparatus for welding at least two layers of thermoplastic coated paperboard together to form a sealed joint between the layErs comprising: back-up means engageable with one outer surface of the paperboard layers; vibrating means engageable with the opposite outer surface of the paperboard layers when said other outer surface is engaged with said back-up means to heat the thermoplastic coating of the paperboard and weld the layers together; said back-up means being movable between operable and inoperable position with respect to said vibrating means; said back-up means comprising a rotatable member having a plurality of radially extending arms, said arms being sequentially movable into operable positions with respect to said vibrating means, and each of said arms in its operable position comprising a back-up member engageable with said one outer surface; said vibrating means being movable between operable and inoperable positions with respect to the operable position of the back-up means; said vibrating means comprising a vibrating member reciprocably movable between positions defining the operable and inoperable positions of the vibrating means; each of said arms comprising a mandrel for receiving a tubular carton of thermoplastic coated paperboard having a multiple layer substantially flat end closure, the end of said arm corresponding in shape to the shape of the flat end closure of the carton for supporting the flat end closure of the carton to be engaged by the vibrating means and thereby weld the layers of the flat end closure together; said vibrating means being reciprocable in an axial direction with respect to the arm in the operable position so that the layers of the flat end closure are clamped between said end of the arm in the operable position and said vibrating means in the operable position of the vibrating means.
Claim 6
Dependent Claim
293 words
Apparatus for welding at least two layers of thermoplastic coated paperboard together to form a sealed joint between the layErs comprising: back-up means engageable with one outer surface of the paperboard layers; vibrating means engageable with the opposite outer surface of the paperboard layers when said other outer surface is engaged with said back-up means to heat the thermoplastic coating of the paperboard and weld the layers together; said back-up means being movable between operable and inoperable position with respect to said vibrating means; said back-up means comprising a rotatable member having a plurality of radially extending arms, said arms being sequentially movable into operable positions with respect to said vibrating means, and each of said arms in its operable position comprising a back-up member engageable with said one outer surface; said vibrating means being movable between operable and inoperable positions with respect to the operable position of the back-up means; said vibrating means comprising a vibrating member reciprocably movable between positions defining the operable and inoperable positions of the vibrating means; each of said arms comprising a mandrel for receiving a tubular carton of thermoplastic coated paperboard having a multiple layer substantially flat end closure, the end of said arm corresponding in shape to the shape of the flat end closure of the carton for supporting the flat end closure of the carton to be engaged by the vibrating means and thereby weld the layers of the flat end closure together; said vibrating means being reciprocable in an axial direction with respect to the arm in the operable position so that the layers of the flat end closure are clamped between said end of the arm in the operable position and said vibrating means in the operable position of the vibrating means.
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) | 1978-09-15 | 1979-03-17 | 1979-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-15 | 1983-03-17 | 1983-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-15 | 1987-03-17 | 1987-09-16 | $7700.00 | Window Closed / Lapsed |