EP0081328A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Improvements in packaging film dispensers
Assignee: Individual
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Filing: 1982-11-26
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Granted: —
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Expires: 2002-11-26
Abstract
Abstract A dispensing implement (10) for use in manually wrapping palleted loads with stretch film has a wheeled base (12, 14) on which a roll (11) of film is mounted for free rotation as film is drawn therefrom. The film leaving the roll (11) is taken in opposite directions in turn around two dispensing rollers (26, 28) mounted to turn on shafts (32) journalled between two yokes (30,31). The yokes, shafts and rollers are pivotable on a mounting tube (34), so that as film is pulled from the apparatus, roller (26) is pressed against the supply roll (11). A gear train (36) ensures that roller (28) rotates at a greater peripheral speed than the other roller (26) so that the film is stretched longitudinally between the rollers. At least roller (28) has a high friction, helical rib configuration on its surface which serves to stretch the film laterally as it passes over this roller (28).
Inventors
- 👤 Kenneth Stephen Eddin Orpen
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 21:21
CPC Classifications
B; B65; B65B; B65B67/00; B65B67/08; B65B67/085
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
148 words
A packaging film dispenser for wrapping objects with stretch film, comprising a support for rotationally supporting an upstanding roll of stretch film and film dispensing means for withdrawing film from the roll, characterised in that the dispensing means includes two rollers (26, 28), around which the film from the roll (11) is passed, mounted on a carrier (30, 31, 32) so that one roller (26) is caused to press against the film roll (11) while film is drawn therefrom and so that the roll and rollers are caused to rotate, and a drive transmission (36), coupling the rollers (26, 28) so that when dispensing the film, the ratio of the peripheral speed of the second (28) of the rollers which the film contacts to the peripheral speed of the roller (26) pressing against the roll (11) exceeds unity thereby positively tensioning the film longitudinally as it is dispensed.
Claim 2
Dependent Claim
148 words
A packaging film dispenser for wrapping objects with stretch film, comprising a support for rotationally supporting an upstanding roll of stretch film and film dispensing means for withdrawing film from the roll, characterised in that the dispensing means includes two rollers (26, 28), around which the film from the roll (11) is passed, mounted on a carrier (30, 31, 32) so that one roller (26) is caused to press against the film roll (11) while film is drawn therefrom and so that the roll and rollers are caused to rotate, and a drive transmission (36), coupling the rollers (26, 28) so that when dispensing the film, the ratio of the peripheral speed of the second (28) of the rollers which the film contacts to the peripheral speed of the roller (26) pressing against the roll (11) exceeds unity thereby positively tensioning the film longitudinally as it is dispensed.
Claim 3
Dependent Claim
35 words
A dispenser according to claim 1, characterised in that the rollers (26, 28) are of equal diameter and are coupled by a drive transmission (36), preferably a gear train, having a velocity ratio exceeding unity.
Claim 4
Dependent Claim
37 words
A dispenser according to claim 1, characterised in that the rollers (26, 28) are of different diameters, roller (28) being the larger, and are coupled by a 1:1 drive transmission, the latter preferably being a gear train.
Claim 5
Dependent Claim
26 words
A dispenser according to claim 1, 2 or 3, further characterised by including means (50, 51) which stretch the film laterally as it is being dispensed.
Claim 6
Dependent Claim
96 words
Apparatus for use in applying a stretch film wrapping to an object such as a loaded pallet, comprising means for withdrawing stretchable film from a supply roll thereof and for conveying the film to a film dispensing means of the apparatus, characterised by means (26, 28) to stretch the film longitudinally in the course of its passage through the apparatus, and means (51, 52) to exert a pull on the film transversely of its length in the course of its said passage so as to confer a lateral stretch to the film dispensed from the apparatus.
Claim 7
Dependent Claim
96 words
Apparatus for use in applying a stretch film wrapping to an object such as a loaded pallet, comprising means for withdrawing stretchable film from a supply roll thereof and for conveying the film to a film dispensing means of the apparatus, characterised by means (26, 28) to stretch the film longitudinally in the course of its passage through the apparatus, and means (51, 52) to exert a pull on the film transversely of its length in the course of its said passage so as to confer a lateral stretch to the film dispensed from the apparatus.
Claim 8
Dependent Claim
63 words
Apparatus according to claim 5, characterised in that the means to stretch the film longitudinally comprise a roller system (26, 28) across which the film is drawn after withdrawal from the supply roll (11), the roller system including at least one driven roller (28) having a peripheral operating speed greater than the linear speed by which the film is drawn from the supply.
Claim 9
Dependent Claim
31 words
Apparatus according to any of claims 4 to 6, characterised in that the means (50, 51) to stretch the film laterally is associated with a dispensing roller (28) of the apparatus.
Claim 10
Dependent Claim
83 words
Apparatus according to claim 7, characterised by two.dispensing rollers one (26) of which has a smooth surface over which the film can slip in a direction transversely of the film and the other (28) of which is a lateral tensioning roller, the film in use being nipped between the two rollers (26, 28) and the tensioning roller (28) having a surface configuration which exerts a frictional, lateral stretching force on the film as the tensioning roller (28) rotates in contact with the film.
Claim 11
Dependent Claim
53 words
Apparatus according to claim 4, 5, or 6, characterised in that the means to stretch the film laterally comprises a dispensing roller (28) of the apparatus, which roller has a surface configuration which in use exerts a frictional lateral stretching force on the film as the roller rotates in contact with the film.
Claim 12
Dependent Claim
76 words
Apparatus according to claim 8 or claim.9, characterised in that the lateral tensioning roller (28) is associated with means to prevent one longitudinal film edge from slipping along the said roller, and the roller has a helical rib (50 or 51) on its surface which in use exerts a frictional grip on the film and which is responsible for developing a widthwise pull on the film, away from the slip-preventing means, to stretch the film laterally.
Claim 13
Dependent Claim
62 words
Apparatus according to claim 8 or claim 9, characterised in that the lateral tensioning roller (28) has two helical ribs (50 and 51) on its surface which wind around the surface in opposite senses, the ribs in use exerting a frictional grip on the film and being responsible for developing opposed, outward widthwise pulls on the film, to stretch the film laterally.
Claim 14
Dependent Claim
34 words
Apparatus according to claim 10 or claim 11, characterised in that the or each rib (50, 51) itself has a ribbed or otherwise contoured surface to enhance friction between the film and the rib.
Claim 15
Dependent Claim
33 words
Apparatus according to any of the preceding claims 4 to 12, characterised by a plurality of lateral stretching means which stretch the film in.stages in the course of its passage through the apparatus.
Claim 16
Dependent Claim
27 words
Apparatus according to any of claims 1 to 13, characterised by the apparatus being a film wrapping implement for use in wrapping objects manually with stretch film.
Claim 17
Dependent Claim
150 words
Apparatus according to claim 14, characterised in that it comprises a handled support means (12, 16) for rotationally receiving an upstanding roll of stretch film and provided with handles (17, 18), at least two dispensing rollers (26, 28) and a carrier (30, 31, 32) mounting the rollers (26, 28) parallel to each other and to a film roll (11) when loaded on the apparatus, the carrier being movable to press one of the rollers (26) into frictional engagement with the film roll (11) when film therefrom is drawn from the apparatus along a path passing around the rollers, and a drive transmission (36) coupling the rollers so that in operation the ratio of the peripheral speed of a roller (28) downstream of the said one roller (26), to that of the latter, exceeds unity, so as to positively tension film longitudinally in the course of dispensing it from the apparatus.
Claim 18
Dependent Claim
46 words
Apparatus according to claim 15, characterised by having just two dispensing rollers, including the said one roller (26), and at least the roller (28) which the film encounters last in the course of its passage from the apparatus is furnished with the said lateral stretching means.
Claim 19
Dependent Claim
35 words
A dispenser according to claim 16, characterised in that the rollers (26. 28) are of equal diameter and are coupled by a drive transmission (36), preferably a gear train, having a velocity ratio exceeding unity.
Claim 20
Dependent Claim
37 words
A dispenser according to claim 16, characterised in that the rollers (26, 28) are of different diameters, roller (28) being the larger, and are coupled by a 1:1 drive transmission, the latter preferably being a gear train.
References Cited (Backward Citations)
No citation records indexed.
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