Patent US1902166A successfully refreshed from Google Patents.
EP1500599A1
Expired / Lapsed
EP
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Pallet and method for manufacturing the same
Assignee: Airdex International Inc
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Filing: 2003-07-23
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Granted: —
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Expires: 2023-07-23
Abstract
Abstract A dunnage platform is in the general shape of a rectangular slab with legs (20-28) extending form one side. The dunnage platform is made from an expanded polystyrene core (10). A chemical combination process is used to chemically combine portion of the core proximal to its surface with high impact polystyrene. In a first of two parts of the combination process, the core is placed in a forming mold (50) with one of its two sides and two thirds of its thickness extending therefrom. A heated sheet (67) of high impact polystyrene is brought into contact with the portion of the core extending from the mold. In a similar manner, the other of the two sides of the core is made to extend from the forming mold for contact with a heated sheet of high impact polystyrene.
Inventors
- 👤 Lawrence W. Dummett
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 04:01
CPC Classifications
B; B29; B29C; B29C51/00; B29C51/16; B29C63/00; B29C63/02; B65; B65D; B65D19/00; B65D19/0004; B65D19/0006; B65D19/0008; B65D19/001; B65D19/0014; B65D19/0018; B29C2791/00; B29C2791/001; B29C2791/004; B29C2791/006; B29C2949/00; B29C2949/07; B29C2949/076; B29C2949/0761; B29C2949/0764; B29K; B29K2025/00; B29L; B29L2031/00; B29L2031/712; B29L2031/7178; B65D2519/00; B65D2519/00004; B65D2519/00009; B65D2519/00014; B65D2519/00034; B65D2519/00044; B65D2519/00049; B65D2519/00069; B65D2519/00079; B65D2519/00258; B65D2519/00263; B65D2519/00268; B65D2519/00283; B65D2519/00288; B65D2519/00313; B65D2519/00318; B65D2519/00328; B65D2519/00338; B65D2519/00736; B65D2519/008; B65D2519/0086
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
42 words
A dunnage platform in the general shape of a rectangular slab with a plurality of legs
extending from one side, said dunnage platform being made from expanded polystyrene that has a
portion proximal to its surface chemically combined with high impact polystyrene.
Claim 2
Dependent Claim
18 words
The dunnage platform of claim 1 wherein said legs are arranged in rows and columns
that are orthogonal.
Claim 3
Dependent Claim
37 words
A process for making a strengthened polystyrene, comprising the steps of: heating high impact polystyrene to a temperature in a range of 293 °F to 375 °F; and placing said heated high impact polystyrene onto expanded polystyrene.
Claim 4
Dependent Claim
58 words
In the method of making a dunnage platform, comprising the steps of: providing a core made from expanded polystyrene in the general shape of a rectangular
slab with one side having a plurality of legs extending therefrom; providing high impact polystyrene; and chemically combining a portion of said core proximal to its surface with said high impact
polystyrene.
Claim 5
Dependent Claim
193 words
In the method of claim 4 wherein said step of providing high impact polystyrene
includes the steps of providing first and second high impact polystyrene sheets, said step of
chemically combining including the steps of: providing a forming mold with an interior that is complimentary to a shape outlined by an
edge of said core; retaining said core within said mold with a first side of said core and at least half the
thickness of said core extending therefrom; heating said first sheet to a temperature in a range of 293 °F to 375 °F; moving said heated first sheet onto portions of said core that extend from said mold,
thereby forming strengthened polystyrene proximal to the surface of said first side and proximal to
a surface of at least half of the edge of said core; retaining said core within said mold with a second side of said core and at least half the
thickness of said core extending therefrom; heating said second sheet to a temperature in a range of 293 °F to 375 °F; and moving said heated second sheet onto portions of said core that extend from said mold.
Claim 6
Dependent Claim
39 words
In the method of claim 5 wherein said step of moving said heated first sheet includes the
additional steps of: providing a vacuum pump; and connecting said vacuum pump to pump air from said second side of said core.
Claim 7
Dependent Claim
25 words
In the method of claim 5, the additional step of drilling one or more holes through said
strengthened polystyrene prior to heating said second sheet
Claim 8
Dependent Claim
36 words
In the method of claim 7 wherein said step of moving said heated second sheet includes
the additional steps of: providing a vacuum pump; and connecting said vacuum pump to pump air from said drilled holes.
References Cited (Backward Citations)
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