US20070051283A1 - Plastic pallet with sealed deck to frame joint - Google Patents
Plastic pallet with sealed deck to frame joint Download PDFInfo
- Publication number
- US20070051283A1 US20070051283A1 US11/359,206 US35920606A US2007051283A1 US 20070051283 A1 US20070051283 A1 US 20070051283A1 US 35920606 A US35920606 A US 35920606A US 2007051283 A1 US2007051283 A1 US 2007051283A1
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- United States
- Prior art keywords
- deck
- frame
- pallet
- accordance
- molded
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
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- 229920003023 plastic Polymers 0.000 title claims description 15
- 238000000576 coating method Methods 0.000 claims abstract description 24
- 239000011248 coating agent Substances 0.000 claims abstract description 22
- 229910052751 metal Inorganic materials 0.000 claims abstract description 17
- 239000002184 metal Substances 0.000 claims abstract description 17
- 239000000853 adhesive Substances 0.000 claims abstract description 15
- 230000001070 adhesive effect Effects 0.000 claims abstract description 15
- 239000002991 molded plastic Substances 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- -1 polypropylene Polymers 0.000 claims description 6
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 2
- 150000002739 metals Chemical class 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 229920002397 thermoplastic olefin Polymers 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims 4
- 230000002093 peripheral effect Effects 0.000 claims 3
- 238000001746 injection moulding Methods 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 8
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 4
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- 230000008901 benefit Effects 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 230000001464 adherent effect Effects 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
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- 238000010276 construction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004023 plastic welding Methods 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D19/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D19/0004—Rigid pallets without side walls
- B65D19/0053—Rigid pallets without side walls the load supporting surface being made of more than one element
- B65D19/0055—Rigid pallets without side walls the load supporting surface being made of more than one element forming a continuous plane contact surface
- B65D19/0057—Rigid pallets without side walls the load supporting surface being made of more than one element forming a continuous plane contact surface the base surface being made of a single element
- B65D19/0061—Rigid pallets without side walls the load supporting surface being made of more than one element forming a continuous plane contact surface the base surface being made of a single element forming discontinuous or non-planar contact surfaces
- B65D19/0063—Rigid pallets without side walls the load supporting surface being made of more than one element forming a continuous plane contact surface the base surface being made of a single element forming discontinuous or non-planar contact surfaces and each contact surface having a stringer-like shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00009—Materials
- B65D2519/00014—Materials for the load supporting surface
- B65D2519/00034—Plastic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00009—Materials
- B65D2519/00049—Materials for the base surface
- B65D2519/00069—Plastic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00258—Overall construction
- B65D2519/00283—Overall construction of the load supporting surface
- B65D2519/00293—Overall construction of the load supporting surface made of more than one piece
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00258—Overall construction
- B65D2519/00398—Overall construction reinforcements
- B65D2519/00402—Integral, e.g. ribs
- B65D2519/00407—Integral, e.g. ribs on the load supporting surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00547—Connections
- B65D2519/00552—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer
- B65D2519/00557—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer without separate auxiliary elements
- B65D2519/00562—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer without separate auxiliary elements chemical connection, e.g. glued, welded, sealed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00547—Connections
- B65D2519/00552—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer
- B65D2519/00557—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer without separate auxiliary elements
- B65D2519/00567—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer without separate auxiliary elements mechanical connection, e.g. snap-fitted
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00547—Connections
- B65D2519/00552—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer
- B65D2519/00572—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer with separate auxiliary element, e.g. screws, nails, bayonets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
- B65D2519/00004—Details relating to pallets
- B65D2519/00736—Details
- B65D2519/0098—Dismountable elements
- B65D2519/0099—Dismountable elements single dismountable pallet element, e.g. for replacement
Definitions
- the present disclosure relates to improvements to the above-cited applications with regard to affixing a deck of a plastic pallet to a frame portion.
- a plastic pallet has a deck which is attached to the top frame of the pallet, which is supported on columns running from the base.
- the periphery of the (e.g.) metal deck is attached to the frame by using metal or plastic fasteners which penetrate through mating holes in the deck and frame.
- the present deck to frame interface wherein the deck, which may be metal or some other material, is bonded in sealing engagement to the frame of a molded plastic pallet.
- Such bonding may be by, e.g.: (a) coating the deck and then melting the coating to attach the deck to the frame; (b) providing an adhesive strip within the recess of a frame; (c) injecting the plastic which forms the frame into holes around the periphery of the deck; and/or (d) injecting plastic so a lip of the frame mechanically envelopes the top edge of the deck.
- the various exemplary means may be used independently or in combinations.
- the coating on a metal deck provides the dual purpose of protecting the metal during use and providing the means of attaching the deck to the frame of the pallet.
- FIG. 1 is a partial cutaway perspective view illustrating a previous deck mounting configuration utilizing metal fasteners
- FIG. 2 is a partial cross sectional view of an exemplary deck mounting configuration utilizing adhesive
- FIG. 3 is a partial cross sectional view of an exemplary deck mounting configuration utilizing injected plastics.
- FIG. 4 is a cross sectional view of an exemplary embedding of a deck in the material of the frame.
- the present disclosure relates to improvements with regard to mating a deck with a frame on an exemplary thermoplastic pallet.
- the present disclosure recognizes certain inefficiencies with regard to the process times, the cost, and the design of previous uses of fasteners to affix a pallet deck to a pallet frame, and provides improved mechanisms whereby the deck may be mated with the frame.
- Pallet 20 has a frame 22 mounted on columns 36 running up from base 34 .
- the illustrated deck 28 is corrugated, and comprises, e.g., aluminum.
- Deck 28 is attached to a frame 22 , e.g., polypropylene, by metal fasteners 38 , such as stakes or rivets.
- an elastomer adhesive 40 is used to bond the deck 28 A to the frame 22 in a sealing arrangement. While the deck 28 A is illustrated as having a coating 32 , the deck 28 A may or may not be coated. In the second exemplary embodiment, the adhesive 40 would not be present, the deck 28 A is coated.
- the coating is a polymer coating 32 . In other exemplary embodiments, the coating may be polypropylene, polyethylene, thermoplastic olefin, or one of known powder coatings for metals, such as aluminum, among others.
- deck 28 A is placed in a recess in the frame 22 , where an adhesive strip, in this case an L-shape strip of adhesive, such as Neoprene rubber, has been pre-placed by means of a pre-form or dispenser.
- the adhesive may be pressure sensitive or may be activated by known means after the deck is placed.
- the deck need not have a coating, but it may be desirable.
- This embodiment also enables use of a deck coating which is not compatible to the material of the molded pallet, when an adhesive is chosen which is mutually adherent to the two materials. Accordingly, a sealed arrangement is achieved whereby the deck is bonded to the frame of a pallet.
- a deck 28 A (e.g., metal) with a coating 32 is bonded to the frame 22 by localized melting of the coating and/or local portion of the frame, for instance by ultrasonic heating.
- the polymer coating on the deck may then protect it from corrosion and abrasion during use of the pallet, and the deck is effectively bonded to the frame in a sealed configuration.
- the coating may also comprise a layer of plastic, which may be provided on the deck 28 A at anytime prior to bonding to the frame 22 .
- the deck may be embedding in plastic during the metal stamping used to form corrugations or other contours.
- the deck 28 A may then be attached to the frame by means of plastic welding, for instance ultrasonic, vibratory or hot plate welding.
- plastic welding for instance ultrasonic, vibratory or hot plate welding.
- This exemplary construction also can desirably obtain a good seal between the deck and the frame.
- FIG. 2 shows a continuous coating 32 , which would aid in protecting the metal from corrosion, the layer may also be present only on a portion of the deck in the vicinity of the frame.
- FIG. 3 a third exemplary embodiment is illustrated, wherein the deck 28 B, which may be made of metal or other material, and the frame 22 B is formed by injection molding in a mold.
- Deck 28 B is provided with exemplary shaped holes along the edges and is placed within an injection machine mold.
- the frame 22 B is then formed by injection of a plastic into the mold.
- the injected plastic flows into the holes to form attachment nubs 42 .
- the deck is bonded to the frame in a sealing engagement.
- the deck 28 C which may be made of metal or other material, and the frame 22 C is formed by injection molding in a mold.
- the mold is configured such that injected plastic utilized for the frame 22 C flows onto the top surface of deck 28 C, as lip 23 C, to hold the deck in place. Accordingly, the deck is bonded to the frame in a sealing engagement.
- the deck may be made from any material.
- the deck comprises corrugated aluminum sheet with the valleys running diagonally across the pallet.
- aluminum is in general oxidation resistant, when not anodized it can be prone to oxidation, particularly in wet environments. The corrosion is often manifested by white scaly and adherent deposits. In certain applications such as clean room or food preparation requiring direct food contact, such oxidation may not be allowable.
- a reactive metal aluminum is prone to chemical attack, for instance, from alkalis such as sodium hydroxide, from certain acids, and from salts.
- pallets may be subjected to such types of environments which can cause corrosion.
Abstract
A deck, e.g., a metal deck, is bonded to the molded plastic frame of a pallet in sealing engagement, e.g., by one or more means including a coating on the deck, which is melted to adhere the deck to the frame, an adhesive provided within a recess of the frame, and injection molding aspects configured to bond the deck to the frame.
Description
- This application claims benefit of U.S. Provisional Patent Application No. 60/654,769, filed Feb. 18, 2005 and is a continuation-in part of U.S. patent application Ser. No. 10/729,615, filed Dec. 5, 2003, which is a divisional of U.S. patent application Ser. No. 09/938,954, filed Aug. 24, 2001, which claimed priority to U.S. Provisional Patent Application Ser. No. 60/227,537, filed Aug. 24, 2000, the entire contents of each of which are specifically incorporated herein by reference.
- The present disclosure relates to improvements to the above-cited applications with regard to affixing a deck of a plastic pallet to a frame portion.
- A plastic pallet has a deck which is attached to the top frame of the pallet, which is supported on columns running from the base. In a typical design, the periphery of the (e.g.) metal deck is attached to the frame by using metal or plastic fasteners which penetrate through mating holes in the deck and frame.
- However, fastening requires a separate operation and certain limitations, and improvements are sought. Among the needs are for lower cost, better strength of attachment, and avoiding areas where dirt can accumulate.
- What is needed is an improved deck to frame interface that provides a lower cost, high strength, sealed solution.
- The above described need in the art is overcome by the present deck to frame interface, wherein the deck, which may be metal or some other material, is bonded in sealing engagement to the frame of a molded plastic pallet. Such bonding may be by, e.g.: (a) coating the deck and then melting the coating to attach the deck to the frame; (b) providing an adhesive strip within the recess of a frame; (c) injecting the plastic which forms the frame into holes around the periphery of the deck; and/or (d) injecting plastic so a lip of the frame mechanically envelopes the top edge of the deck.
- The various exemplary means may be used independently or in combinations. Where utilized, the coating on a metal deck provides the dual purpose of protecting the metal during use and providing the means of attaching the deck to the frame of the pallet.
- The foregoing and other objects, features and advantages of the present pallet will become more apparent from the following description of exemplary embodiments and accompanying drawings.
- Referring now to the accompanying FIGURES, which are meant to be exemplary and not limiting:
-
FIG. 1 is a partial cutaway perspective view illustrating a previous deck mounting configuration utilizing metal fasteners; -
FIG. 2 is a partial cross sectional view of an exemplary deck mounting configuration utilizing adhesive; -
FIG. 3 is a partial cross sectional view of an exemplary deck mounting configuration utilizing injected plastics; and -
FIG. 4 is a cross sectional view of an exemplary embedding of a deck in the material of the frame. - As noted above, the present disclosure relates to improvements with regard to mating a deck with a frame on an exemplary thermoplastic pallet. The present disclosure recognizes certain inefficiencies with regard to the process times, the cost, and the design of previous uses of fasteners to affix a pallet deck to a pallet frame, and provides improved mechanisms whereby the deck may be mated with the frame.
- Referring now to
FIG. 1 , a portion of anexemplary pallet 20 utilizing fasteners is illustrated. Pallet 20 has aframe 22 mounted oncolumns 36 running up frombase 34. The illustrateddeck 28 is corrugated, and comprises, e.g., aluminum.Deck 28 is attached to aframe 22, e.g., polypropylene, by metal fasteners 38, such as stakes or rivets. - Referring now to
FIG. 2 , two different exemplary embodiments claimed herein are illustrated. In the first exemplary embodiment, an elastomer adhesive 40 is used to bond thedeck 28A to theframe 22 in a sealing arrangement. While thedeck 28A is illustrated as having acoating 32, thedeck 28A may or may not be coated. In the second exemplary embodiment, the adhesive 40 would not be present, thedeck 28A is coated. In one exemplary embodiment, the coating is apolymer coating 32. In other exemplary embodiments, the coating may be polypropylene, polyethylene, thermoplastic olefin, or one of known powder coatings for metals, such as aluminum, among others. - In the first exemplary embodiment,
deck 28A is placed in a recess in theframe 22, where an adhesive strip, in this case an L-shape strip of adhesive, such as Neoprene rubber, has been pre-placed by means of a pre-form or dispenser. The adhesive may be pressure sensitive or may be activated by known means after the deck is placed. In this exemplary embodiment, the deck need not have a coating, but it may be desirable. This embodiment also enables use of a deck coating which is not compatible to the material of the molded pallet, when an adhesive is chosen which is mutually adherent to the two materials. Accordingly, a sealed arrangement is achieved whereby the deck is bonded to the frame of a pallet. - As described above, in the second exemplary embodiment the adhesive 40 is not used. A
deck 28A (e.g., metal) with acoating 32 is bonded to theframe 22 by localized melting of the coating and/or local portion of the frame, for instance by ultrasonic heating. Thus the deck is securely attached to the frame, taking advantage of the previously well-adhered powder coating. The polymer coating on the deck may then protect it from corrosion and abrasion during use of the pallet, and the deck is effectively bonded to the frame in a sealed configuration. - Referring still to
FIG. 2 , the coating may also comprise a layer of plastic, which may be provided on thedeck 28A at anytime prior to bonding to theframe 22. For example, the deck may be embedding in plastic during the metal stamping used to form corrugations or other contours. Thedeck 28A may then be attached to the frame by means of plastic welding, for instance ultrasonic, vibratory or hot plate welding. This exemplary construction also can desirably obtain a good seal between the deck and the frame. Also, whileFIG. 2 shows acontinuous coating 32, which would aid in protecting the metal from corrosion, the layer may also be present only on a portion of the deck in the vicinity of the frame. - Referring now to
FIG. 3 , a third exemplary embodiment is illustrated, wherein the deck 28B, which may be made of metal or other material, and theframe 22B is formed by injection molding in a mold. Deck 28B is provided with exemplary shaped holes along the edges and is placed within an injection machine mold. Theframe 22B is then formed by injection of a plastic into the mold. The injected plastic flows into the holes to form attachment nubs 42. Thus, the deck is bonded to the frame in a sealing engagement. - Referring now to
FIG. 4 , in another exemplary embodiment, thedeck 28C, which may be made of metal or other material, and theframe 22C is formed by injection molding in a mold. The mold is configured such that injected plastic utilized for theframe 22C flows onto the top surface ofdeck 28C, as lip 23C, to hold the deck in place. Accordingly, the deck is bonded to the frame in a sealing engagement. - As noted, the deck may be made from any material. In one exemplary embodiment, the deck comprises corrugated aluminum sheet with the valleys running diagonally across the pallet. Although aluminum is in general oxidation resistant, when not anodized it can be prone to oxidation, particularly in wet environments. The corrosion is often manifested by white scaly and adherent deposits. In certain applications such as clean room or food preparation requiring direct food contact, such oxidation may not be allowable. Furthermore, as a reactive metal aluminum is prone to chemical attack, for instance, from alkalis such as sodium hydroxide, from certain acids, and from salts. In diverse use, pallets may be subjected to such types of environments which can cause corrosion. There can be weakening through metal loss; the resultant rough surfaces can be hard to clean and have a poor appearance. Thus, there is a need to protect the deck, and to provide a means which makes the deck easier to clean. Accordingly, when using such deck materials, it is often advantageous to utilize a coating.
- Although this invention has been shown and described with respect to a exemplary embodiments, it will be understood by those skilled in this art that various changes in form and detail thereof may be made without departing from the spirit and scope of the claimed invention.
Claims (13)
1. A pallet, comprising:
a molded plastic frame; and
a deck, wherein the deck is bonded to the molded plastic frame in sealing engagement an at least partially melted coating, an adhesive provided within a recess of the frame, or an injection molded frame portion, which portion engages a peripheral portion of said deck.
2. A pallet in accordance with claim 1 , wherein said deck is bonded to the molded plastic frame with an injection molded frame portion, wherein the injected molded frame portion is disposed at least partially within a cavity of the deck.
3. A pallet in accordance with claim 2 , wherein said injection molded frame portion forms a nub, which is provided as injection molded in a shaped hole on the deck.
4. A pallet in accordance with claim 2 , wherein said injection molded frame portion forms a lip, which is provided at least partially over an upper peripheral edge of said deck.
5. A pallet in accordance with claim 1 , wherein the deck is bonded to the frame by a partially melted coating.
6. A pallet in accordance with claim 5 , wherien the coating is polypropylene, polyethylene, thermoplastic olefin, or one of known powder coatings for metals.
7. A pallet in accordance with claim 5 , wherein the coating completely covers the deck surfaces.
8. A pallet in accordance with claim 1 , wherein the deck is bonded to the frame by an adhesive.
9. A pallet in accordance with claim 8 , wherein the adhesive comprises an L-Shaped strip provided along an L-Shaped contour between the frame and the deck.
10. A method of making a pallet having a molded plastic frame and a deck, comprising: bonding the deck to the molded plastic frame in sealing engagement an at least partially melted coating, an adhesive provided within a recess of the frame, or an injection molded frame portion, which portion engages a peripheral portion of said deck.
11. A method of making a pallet having a molded plastic frame and a deck, comprising: forming a recess in the frame to receive the deck, placing an adhesive in the strip, and placing the deck into the recess to attach the deck to the frame.
12. A method of making a pallet having a molded plastic frame and a deck, comprising: providing a multiplicity of perforations in the deck, placing the deck in an injection machine mold, and injecting plastic into the mold to form the frame, and to cause plastic to flow through the holes, to thereby form nubs which are integral to the frame and which hold the deck onto the frame.
13. A method of making a pallet having a molded plastic frame and a deck, comprising: placing the deck in an injection machine mold, and injecting plastic into the mold to form the frame, so that a lip is formed over a top surface of the deck, as it rests on and within the frame during use of the pallet.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/359,206 US20070051283A1 (en) | 2000-08-24 | 2006-02-21 | Plastic pallet with sealed deck to frame joint |
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US22753700P | 2000-08-24 | 2000-08-24 | |
US09/938,954 US6705237B2 (en) | 2000-08-24 | 2001-08-24 | Plastic pallet design |
US10/729,615 US20040112261A1 (en) | 2000-08-24 | 2003-12-05 | Plastic pallet design |
US65476905P | 2005-02-18 | 2005-02-18 | |
US11/359,206 US20070051283A1 (en) | 2000-08-24 | 2006-02-21 | Plastic pallet with sealed deck to frame joint |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/729,615 Continuation-In-Part US20040112261A1 (en) | 2000-08-24 | 2003-12-05 | Plastic pallet design |
Publications (1)
Publication Number | Publication Date |
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US20070051283A1 true US20070051283A1 (en) | 2007-03-08 |
Family
ID=37828881
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/359,206 Abandoned US20070051283A1 (en) | 2000-08-24 | 2006-02-21 | Plastic pallet with sealed deck to frame joint |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060185565A1 (en) * | 2005-02-18 | 2006-08-24 | Brochu Ronald P | Plastic pallet having metal deck |
US20070000415A1 (en) * | 2005-03-01 | 2007-01-04 | Moore Roy E Jr | Thermoplastic article having portions with different fire resistances |
US20100043676A1 (en) * | 2008-08-22 | 2010-02-25 | Apps William P | Pallet with alignment features |
US20130206616A1 (en) * | 2012-02-13 | 2013-08-15 | Phillip John Allen | Cleanroom box |
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US5921189A (en) * | 1997-03-26 | 1999-07-13 | Estepp; Gary N. | Tubular pallet apparatus |
US6199488B1 (en) * | 1997-10-07 | 2001-03-13 | James Favaron | Reinforced plastic pallets |
US6250234B1 (en) * | 1998-07-01 | 2001-06-26 | Rehrig Pacific Company | Method of reinforcing a plastic pallet |
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US6357366B1 (en) * | 1999-02-05 | 2002-03-19 | Menasha Corporation | Rackable molded pallet |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060185565A1 (en) * | 2005-02-18 | 2006-08-24 | Brochu Ronald P | Plastic pallet having metal deck |
US20070000415A1 (en) * | 2005-03-01 | 2007-01-04 | Moore Roy E Jr | Thermoplastic article having portions with different fire resistances |
US20100043676A1 (en) * | 2008-08-22 | 2010-02-25 | Apps William P | Pallet with alignment features |
US8291839B2 (en) | 2008-08-22 | 2012-10-23 | Rehrig Pacific Company | Pallet with alignment features |
US20130206616A1 (en) * | 2012-02-13 | 2013-08-15 | Phillip John Allen | Cleanroom box |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: ENGINEERED PALLET COMPANY LLC, THE, CONNECTICUT Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MOORE, JR., ROY E.;REEL/FRAME:019676/0404 Effective date: 20060720 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |