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US4332326A Expired / Lapsed US ⏱️ 0.0 years remaining

Plastic netting for load unitization

Assignee: Leucadia Inc
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Filing: 1980-04-10
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Granted: 1982-06-01
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Expires: 2000-04-10
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Abstract

Abstract An improved wrapping material for palletized loads which are tension wrapped is disclosed. A plastic net material comprising the plurality of sets of strands, the strands of at least one said set being substantially parallel, is oriented along said one said set to have a stretch factor of less than 15% in the oriented direction. This net is used for wrapping about pelletized loads and gives substantially improved results over known plastic net materials used in tension wrapping of palletized loads.

Inventors

  • 👤 Michael G. Kelly
  • 👤 Eugene R. Pastien

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 08:57
CPC Classifications
B; B65; B65D; B65D71/00; B65D71/0088; B65D71/0092; B65D71/0096; B65D2571/00; B65D2571/00006; B65D2571/00012; B65D2571/00018; B65D2571/0003

Claims Analysis

Total Claims: 19
Claim 1
Independent Claim 104 words
In a palletized load utilizing a plastic net material as the pallet wrap, the improvement comprising said plastic net when it is wrapped about said palletized load being composed of a plurality of sets of spaced strands, the strands of at least one set being substantially parallel and being in the longitudinal direction of the net, said one set of strands being stretch-oriented to a sufficient degree so that it is incapable of being stretched further by more than about 15% in said stretch-oriented direction when stressed under the tension to which normal palletized loads are subjected at temperatures up to about 180° F.
Claim 2
Dependent Claim 104 words
In a palletized load utilizing a plastic net material as the pallet wrap, the improvement comprising said plastic net when it is wrapped about said palletized load being composed of a plurality of sets of spaced strands, the strands of at least one set being substantially parallel and being in the longitudinal direction of the net, said one set of strands being stretch-oriented to a sufficient degree so that it is incapable of being stretched further by more than about 15% in said stretch-oriented direction when stressed under the tension to which normal palletized loads are subjected at temperatures up to about 180° F.
Claim 3
Dependent Claim 23 words
The pallatized load of claim 1 wherein said one set of strands is incapable of being stretched further by more than about 10%.
Claim 4
Dependent Claim 53 words
The palletized load of claim 1 wherein said plastic netting material is polypropylene, has about 10 to 20 strands per 10 inches of longitudinal strands and about 2 to 6 strands per 10 inches in a direction transverse to the longitudinal direction and weighs about 3 to 7 pounds per thousand square feet.
Claim 5
Dependent Claim 22 words
The palletized load of claim 1 wherein the plastic net material is selected from the group consisting of polyolefins, polyamides and polyesters.
Claim 6
Dependent Claim 13 words
The palletized load of claim 1 wherein said plastic net material is polypropylene.
Claim 7
Dependent Claim 15 words
The palletized load of claim 1 wherein said plastic net material is high density polyethylene.
Claim 8
Dependent Claim 27 words
The palletized load of claim 1 wherein each set of strands of said plastic net material has from about 10 to about 20 strands per 10 inches.
Claim 9
Dependent Claim 176 words
A palletized load comprising a pallet device and a plurality of containers on said pallet device, said pallet device and said containers being unitized with a pallet wrap, said pallet wrap being a plastic net material selected from the group consisting of polypropylene and high density polyethylene, the plastic net material comprising two sets of strands, one set of which is in the longitudinal direction of the net and the strands of said one set being essentially parallel, the other said set of strands being transverse to the one said set of strands, said one set of strands being stretch-oriented to a sufficient degree so that it is incapable of being stretched further by more than about 15% in said stretch-oriented direction when stressed under the tension to which normal palletized loads are subjected at temperatures up to about 180° F., each said set of strands having from about 10 to about 20 strands per 10 inches, the weight of the plastic net material being from about 2.0 to about 3.5 pounds per thousand square feet.
Claim 10
Dependent Claim 176 words
A palletized load comprising a pallet device and a plurality of containers on said pallet device, said pallet device and said containers being unitized with a pallet wrap, said pallet wrap being a plastic net material selected from the group consisting of polypropylene and high density polyethylene, the plastic net material comprising two sets of strands, one set of which is in the longitudinal direction of the net and the strands of said one set being essentially parallel, the other said set of strands being transverse to the one said set of strands, said one set of strands being stretch-oriented to a sufficient degree so that it is incapable of being stretched further by more than about 15% in said stretch-oriented direction when stressed under the tension to which normal palletized loads are subjected at temperatures up to about 180° F., each said set of strands having from about 10 to about 20 strands per 10 inches, the weight of the plastic net material being from about 2.0 to about 3.5 pounds per thousand square feet.
Claim 11
Dependent Claim 92 words
In the process of tension wrapping palletized loads with a plastic net material, the improvement comprising said plastic net material comprising a plurality of sets of spaced strands, the strands of at least one set being substantially parallel and being in the longitudinal direction of the net, said one set of strands being stretch-oriented to a sufficient degree so that it is incapable of being stretched further by more than about 15% when subjected to a tension within 20% of the tension required to break the strands of the said one set.
Claim 12
Dependent Claim 92 words
In the process of tension wrapping palletized loads with a plastic net material, the improvement comprising said plastic net material comprising a plurality of sets of spaced strands, the strands of at least one set being substantially parallel and being in the longitudinal direction of the net, said one set of strands being stretch-oriented to a sufficient degree so that it is incapable of being stretched further by more than about 15% when subjected to a tension within 20% of the tension required to break the strands of the said one set.
Claim 13
Dependent Claim 22 words
The process of claim 9 wherein said one set of strands is incapable of being stretched further by more than about 10%.
Claim 14
Dependent Claim 22 words
The process of claim 9 wherein said one set of strands is incapable of being stretched further by more than about 5%.
Claim 15
Dependent Claim 52 words
The process of claim 9 wherein said plastic netting material is polypropylene, has about 10 to 20 strands per 10 inches of longitudinal strands and about 2 to 6 strands per 10 inches in a direction transverse to the longitudinal direction and weighs about 3 to 7 pounds per thousand square feet.
Claim 16
Dependent Claim 21 words
The process of claim 9 wherein the plastic net material is selected from the group consisting of polyolefins, polyamides and polyesters.
Claim 17
Dependent Claim 12 words
The process of claim 9 wherein said plastic net material is polypropylene.
Claim 18
Dependent Claim 14 words
The process of claim 9 wherein said plastic net material is high density polyethylene.
Claim 19
Dependent Claim 26 words
The process of claim 9 wherein each set of strands of said plastic net material has from about 10 to about 20 strands per 10 inches.

References Cited (Backward Citations)

DE2207573A1 Cited
US4136501A Cited
US4206846A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1985-05-31 1985-11-30 1986-06-01 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1989-05-31 1989-11-30 1990-06-01 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1993-05-31 1993-11-30 1994-06-01 $7700.00 Window Closed / Lapsed

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