WO1998003417A1 - Low-noise film unwrapping method and device - Google Patents
Low-noise film unwrapping method and device Download PDFInfo
- Publication number
- WO1998003417A1 WO1998003417A1 PCT/US1996/011899 US9611899W WO9803417A1 WO 1998003417 A1 WO1998003417 A1 WO 1998003417A1 US 9611899 W US9611899 W US 9611899W WO 9803417 A1 WO9803417 A1 WO 9803417A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- unwrapping
- rollstock
- film
- angle
- take
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B41/00—Supplying or feeding container-forming sheets or wrapping material
- B65B41/12—Feeding webs from rolls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H16/00—Unwinding, paying-out webs
- B65H16/10—Arrangements for effecting positive rotation of web roll
- B65H16/103—Arrangements for effecting positive rotation of web roll in which power is applied to web-roll spindle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
- B65H23/182—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in unwinding mechanisms or in connection with unwinding operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2407/00—Means not provided for in groups B65H2220/00 – B65H2406/00 specially adapted for particular purposes
- B65H2407/10—Safety means, e.g. for preventing injuries or illegal operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2408/00—Specific machines
- B65H2408/20—Specific machines for handling web(s)
- B65H2408/24—Specific machines for handling web(s) unwinding machines
- B65H2408/241—Turret
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
- B65H2511/20—Location in space
- B65H2511/21—Angle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2513/00—Dynamic entities; Timing aspects
- B65H2513/10—Speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2513/00—Dynamic entities; Timing aspects
- B65H2513/20—Acceleration or deceleration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
Definitions
- This invention is related to the unwrapping of self-adhering film without incurring high noise levels, that is, levels > 90 decibels.
- the invention is particularly related to a method and a device for maintaining reduced noise levels while unwrapping high cling stretch wrap films.
- Stretch cling films are self-adhering films that are used to wrap, fasten and/or protect a variety of items during shipping including palletized goods and new vehicles.
- Typical stretch-cling film consists of polyethylene impregnated with a low molecular weight tackifier, such as, for example, polyisobutylene .
- Unwrapping of self-adhering" film is either performed manually with hand-held devices or with the use of powered turntable-type wrapping machines or powered unwinding equipment.
- high decibel noise is typically generated when self adhering film is unwrapped.
- unwrapping noise generally increases as the cling level of the film increases, and commercial stretch-cling wrapping films are particularly notorious for excessive noise generation.
- unwrapping of commercially supplied stretch-cling films with powered turntable-type wrapping machines typically generates continuous noise in excess of 90 decibels which exceeds the OSHA standard 1910.95 for permissible workplace noise levels.
- the noise associated with unwrapping stretch cling films correlates with the unwrapping take-off angle of the film.
- the unwrapping take-off angle of the film will be relatively low during continuous unwrapping operations.
- the unwrapping take-off angle of such film will typically be in the range of 30 to 60 degrees and especially less than 75 degrees.
- Known approaches include employing lower tackifier levels or utilizing a generally less effective tackifier such as, for example, a film having cling layers consisting of an ethylene methacrylate (EMA) copolymer having a relatively low methacrylate content or an amorphous polyolefin (APO) .
- EMA ethylene methacrylate
- APO amorphous polyolefin
- Another known approach for reducing high noise levels involves utilizing one-sided cling films rather than two-sided cling films.
- Still another known approach involves maintaining lower ambient temperatures (air conditioning) at unwrapping facilities which reduces noise by reducing the effective migration of tackifymg material to the surface of the film.
- unwrapping machinery modifications include rollstock speed control, take-off angle variations and the use of deflectors.
- Such machinery modifications pertain to pre-stretching or tensiomng of films and generally do not pertain to noise reduction. See, as examples, the disclosures by Redfearn in GB publication 2109722A and Lancaster et al . in US Patent 4,336,679.
- the object of the present invention is to solve the long standing problem of self-adhering films generating excessive noise during unwrapping operations.
- Another object of the present invention is to achieve substantial noise reduction while maintaining high adhesion or cling performance.
- Still another object of the present invention is to achieve substantial noise reduction when stretch-cling f lm is unwrapped and dispensed as either pre-stretched or non-stretched wraps Unlike prior art approaches that compromise adhesion or cling performance, the present objectives are met by a new method and device that do not require alteration of the cling performance of the film
- One aspect of the present invention is a method for unwrapping self-adhering films at reduced unwrapping noise levels which comprises (a) providing a rollstock of self -adhering film, (b) providing an unwrapping apparatus having means to removably engage the rollstock and means to maintain a sufficiently high unwrapping take-off angle to prevent excessive noise generation during the unwrapping and dispensing or unwinding of the rollstock, (c) engaging the rollstock,
- Another aspect of the present invention is a device or a modified apparatus for unwrapping a self -adhering f lm at reduced noise levels which comprises
- FIG 1, which is not illustrative of the present invention, is a graphical topview of a rollstock 10 of film 5 being unwrapped and dispensed at an angle of 0 degrees onto an uptake roller 30 of a stretch wrapping machine 70, the stretch wrapping machine 70 has, downstream of the uptake roller 30, a turntable 80 and a load 90 positioned on the turntable wherein the speed of the uptake roller 30 is directly controlled by the turntable 80.
- FIG. 2 which is not illustrative of the present invention, is a graphical topview of a rollstock 10 of film 5 being unwrapped and dispensed at an angle of 60 degrees onto an uptake roller 30 of a stretch wrapping machine 70 having film pre-stretching capabilities, wherein the speed of the uptake roller 30 is controlled by downstream means and the stretch wrapping machine 70 has, downstream of the uptake roller 30, two power driven pre-stretch rollers 21-22, two idler rollers 41-42 and one dancer roller 43.
- FIG. 3, which is illustrative of the present invention, is a graphical topview of a rollstock 10 of film 5 being unwrapped and dispensed at an angle of 90 degrees onto an uptake roller 30 of a stretch wrapping machine 70 having film pre-stretching capabilities, wherein the speed of the uptake roller 30 is controlled by downstream means and the stretch wrapping machine 70 has, downstream of the uptake roller 30, two power driven pre-stretch rollers 21-22, two idler rollers 41-42 and one dancer roller 43.
- FIG. 4 which is illustrative of the present invention, is a graphical topview of a rollstock 10 of film 5 being unwrapped and dispensed at an angle of 180 degrees onto an uptake roller 30 of a stretch wrapping machine 70 having film pre-stretching capabilities, wherein the speed of the uptake roller 30 is controlled by downstream means and the stretch wrapping machine 70 has, downstream of the uptake roller 30, two power driven pre-stretch rollers 21-22, two idler rollers 41-42 and one dancer roller 43.
- FIG. 5, which is illustrative of the present invention, is a graphical topview of a rollstock 10 of film 5 being unwrapped and dispensed at an angle of 90 degrees onto an uptake roller 30 of a stretch wrapping machine 70 having film pre-stretching capabilities, wherein the speed of the uptake roller 30 is controlled by downstream means and the stretch wrapping machine 70 has, downstream of the uptake roller 30, two power driven pre-stretch rollers 21-22, two idler rollers 41-42 and one dancer roller 43, and the 90 degree angle is effectuated by a variable speed motor 60 having a pulley 62 which is engaged to a belt 61, the belt 61 is simultaneously engaged to a second pulley 63 which is affixed, in the embodiment illustrated, to the top of the rollstock 10
- FIG. 6, which is illustrative of the present invention, is a graphical topview of a rollstock 10 of film 5 being unwrapped and dispensed at an angle of 90 degrees onto the uptake roller 30 of a stretch wrapping machine 70 having film pre-stretching capabilities, wherein the speed of the uptake roller 30 is controlled by downstream means and the stretch wrapping machine 70 has, downstream of the uptake roller 30, two power driven pre-stretch rollers 21-22, two idler rollers 41-42 and one dancer roller 43, and the 90 degree angle is effectuated by a variable position deflector member 50 positioned proximate to the rollstock 10
- the terms "uptake roller” or “uptake member” as used herein refer to the first roller or structural member of an unwrapping apparatus that a film communicates with after being unwrapping from a rollstock Where one or more deflector member (defined herein below) is employed, the uptake roller or member is the roller or structural member immediately preceding a first pre-stretching or tensionmg member
- rollerstock or "dispensing rollstock” as used herein refer to a supply roll or coil of film
- unwrapping apparatus refers to handheld, desk-top and/or powered devices including, but not limited to, turntable style stretch wrapping machines, desk-top tape dispensers and unwinding equipment
- unwrapping take-off angle refers to the angle at which the film leaves the dispensing rollstock as the film is being unwrapped and dispensed or unwound with the use of an unwrapping apparatus .
- deflector member refers to a structural member of an unwrapping apparatus which is interposed between, and oriented parallel to, the rollstock position of the apparatus and the uptake roller or member and provides an unwrapping take-off angle of greater than 60 degrees
- the deflector member is preferably spring- loaded, non-rotating and has a low f ⁇ ctional surface
- first power driven member refers to a roller or structural member of an unwrapping apparatus which is positioned downstream of an uptake roller and is power driven (as opposed to f ee-rotating) Ihe first power driven membei can be, foi example, the turntable itself or the first power pre-stretch roller of a stretch wrapping machine If the first power driven member is a pre- stretch roller (as the term is conventionally used m the art of stretch wrapping) , it will function to elongate or tension film during unwrapping and dispensing or unwinding operations.
- power pre- stretch roller as used herein can refer to a pre-stretching or tensionmg member of an unwrapping apparatus
- idle roller refers to a free-rotating, non-powered roller situated immediately downstream of a power pre-stretch roller
- dancer roller refers to a free-rotating, non-powered roller which can be operated mechanically to elongate or tension film
- the dancer roller is usually the last roller member of an unwrapping apparatus a film contacts before reaching the load to be wrapped
- unwrapping noise can be substantially reduced to levels of less than 100 decibels, preferably less than or equal to 95 decibels , more preferably less than or equal to 90 decibels, especially less than or equal to 85 decibels and most especially less than or equal to 80 decibels
- the higher the adhesion or cling of the film the greater the
- a preferred embodiment of the present invention is a stretch wrapping device comprising a first and second power pre-stretch roller downstream of an uptake roller, means to removably engage a rollstock of stretch film and means to accelerate and adjust the speed of the rollstock to substantially exceed and then to substantially match the speed of the first power pre-stretch roller during unwrapping and dispensing of the film, wherein the accelerated and adjusted rollstock speed is sufficient to maintain an unwrapping take-off angle of at least 75 degrees.
- Another preferred embodiment of the present invention is a method for unwrapping stretch wrap films at reduced noise levels which comprises providing a rollstock of stretch wrap film, providing a pallet stretch wrapping machine having an uptake roller, a first and a second pre-stretch roller downstream of the uptake roller, means to removably engage the rollstock upstream of the uptake roller and means to accelerate and adjust the speed of the rollstock, engaging the rollstock, operating the stretch wrapping machine, adjusting the speed of the rollstock to substantially exceed and then to substantially match the speed of the first power pre-stretch roller, wherein an unwrapping take-off angle of at least 75 degrees is maintained, and unwrapping the film.
- the means to accelerate and adjust rollstock speed is accomplished by an assembly comprising a motor, two pulleys and a drive belt, wherein the rollstock speed can be independently accelerated and adjusted from 0 to 100 rpms .
- FIG. 6 Another embodiment, as illustrated, for example, by FIG. 6, is an unwrapping apparatus having an uptake member, means to removably engage a rollstock of self-adhering film and a variable position deflector member which, when effectively positioned, cooperates with the uptake member and the engaged rollstock to maintain an unwrapping take-off angle of at least 75 degrees.
- Another still embodiment of the present invention is a method for unwrapping self-adhering film at reduced noise levels which comprises providing a rollstock of self-adhering film, providing an unwrapping apparatus having (1) an uptake roller, (2) means to removably engage the rollstock upstream of the uptake roller and (3) a variable position deflector member which cooperates with the uptake member and the rollstock when engaged, engaging the rollstock, operating the unwrapping apparatus, effectively positioning the deflector member to maintain an unwrapping take-off angle of at least 75 degrees, and unwrapping the film.
- variable position deflector members and means to accelerate and adjust the speed of the rollstock can be employed in combination for a single device or method.
- the effective position of the deflector member can also effectuate tensionmg of the film as long as it maintains a sufficiently high unwrapping take-off angle
- the rollstock speed control means and particularly the use of such means to effectuate a sufficiently high unwrapping take-off angle is completely distinct from conventional unwrapping devices which typically involve free-rotating, non-power driven supply rolls.
- the unwrapping take-off angle s increased by accelerating the rollstock speed to a speed greater than the speed of the first power driven member and thereafter reducing the rollstock speed to substantially match the speed of the first power driven member.
- the amount of acceleration above the speed of the first power driven member will control the resultant unwrapping take-off angle, that is, the higher the accelerated speed, the larger the increase in the unwrapping take-off angle.
- operating at a prolonged time at a moderately higher speed than the first power driven member can accomplish the same angle increase as operating momentarily at a substantially higher speed than the first power driven member.
- the upper acceleration limit is the onset of rollstock over-wrapping, and if the rollstock speed is not substantially matched to the speed of the first power driven member (in linear meters/minute) after the acceleration, over time in a continuous unwrapping operation, the increased angle will not be maintained and/or undesirable film tensionmg will occur.
- a stretch wrapping apparatus includes a power driven turntable but does not include powered tensioning means (or where such means are not operated during unwrapping) and the required unwrapping take-off angle is effectuated by accelerating and adjusting the rollstock speed
- the rollstock speed must be accelerated and adjusted to substantially exceed and then to substantially match the speed of the turntable and load.
- any known unwrapping apparatus can also be suitably adapted or retrofitted with the essential features of the present invention for use in the novel method or as the novel device.
- Particularly suitable devices for adaptation are pallet stretch wrapping machines such as, for example, a Lantech SHS Pre-Stretch Wrapper or Mima Accustretch II Power Pre-stretch Wrapper.
- the unwrapping apparatus can also be fitted with a clock- style protractor (as illustrated in FIG. 7) for manually measuring the unwrapping take-off angle and facilitating manual adjustments of the rollstock speed and/or deflector member positions.
- the unwrapping apparatus can be automated by including means to sense the unwrapping take-off angle and/or noise level detection means and means to provide sufficient automatic rollstock speed adjustments to achieve a predetermined decibel level, such as, for example, a microcomputer connected to received input from the first power driven member, the sensing means and/or the noise level detection means and to deliver output for controlling and adjusting rollstock accelerations and matching speeds .
- any known self -adhering f lm can be unwrapped and dispensed or unwound by the novel method and device, however particularly suitable films include monolayer or multilayer stretch wrap films including, but not limited to, stretch cling films having one-sided, two-sided, differential and/or inherent cling, and/or prepared with the use of tackifiers (such as, polyisobutylene or turpenes) , functional ethylene copolymers (such as ethylene/methacrylate and ethylene vinyl acetate) , heterogeneous ethylene/alpha-olefin interpolymers (such as linear low density ethylene/1-hexene copolymers) , homogeneous ethylene/alpha-olefin interpolymers (such as substantially linear ethylene/1-octene copolymers) or amorphous polyolefins, or combinations thereof.
- the method and device is also suitable for dispensing or unwinding one-sided and double-sided
- the benefits of the present invention include reduced workplace noise during unwrapping operation of self-adhering films and now, to achieve lower noise levels, film formulators do not have to formulate for reduced or marginal adhesion or cling performance.
- Non-cling blown film comprising a heterogeneous linear low density ethylene/l-octene copolymer having a 0.920 g/cc density and a 1.0 g/10 mm melt index, the copolymer supplied commercially under the designation DO EX*' 2045A by The Dow Chemical Company a commercially supplied one-sided blown stretch cling film comprising an EMA cling layer
- a commercially supplied one-sided cast stretch cling film comprising an EMA cling layer the EMA was supplied commercially under the designation XC-101 by Exxon Chemical Corporation an one-sided cast stretch "inherent” cling film comprising 8 weight percent of a substantially linear ethylene/l-octene copolymer as a cling layer component, the copolymer was supplied commercially under the designation ENGAGF" KC B852 by The Dow Chemical Company an one-sided cast stretch "inherent” cling film comprising 10 weight percent ot a substantially linear ethylene/l-octene copolymer as a cling layer component, the copolymer was supplied commercially under the designation ENGAGE'" KC 8852 by The Dow Chemical Company an one-sided cast stretch "inherent” cling film comprising 12 weight percent of a substantially linear ethylene/l-octene copolymer as a cling layer component, the copolymer was supplied commercially under the designation
- the stretch wrapper was adapted w th a drive assembly as described in Table 2.
- Model # 4Z131A which was a reversible 90 volt permanent magnet DC gear motor capable of 109 rpms, 3.05 Joules of torque and 37.3 Joules/sec of power .
- Gear Motor Speed Controller - a Dayton motor, Model# 6A191, having a 21 - 47 Joules/sec range of power, 90 arm. volts and a 15.1 constant torque speed range.
- Gear Motor Pulley Phoenix Modeltt A250- /8, V-Belt Pulley, 2 1 /2 inch (6.35 cm) diameter, designed to fit a /8 inch (1.6 cm) shaft.
- Rollstock Pulley Phoenix Modeltt A500- /4 , V-Belt Pulley, 5 inch (12.7 cm) diameter, designed to fit a /4 inch (1.9 cm) shaf Drive Belt - Gates Hi -Power /4 inch (23 5 cm)
- the controller allowed the gear motor speed to be controlled from 0 to 109 rpms and the gear motor pulley, rollstock pulley and the drive belt together constituted a pulley speed reduction system which, when coupled to the gear motor, allowed the rollstock speed to be controlled from 0 to 54.5 rpms. Increasing the rollstock speed to substantially approach, match or exceed the speed of the first pre-stretch roller resulted in unwrapping take-off angles greater than 60 degrees.
- Table 3 illustrates the noise levels for Film Samples A-F with and without the unwrapping take-off angle maintained above 60 degrees.
- Comparative Runs 1-6 correspond directly to Film Samples A-F.
- Comparative Run 7 utilizes Film Sample A.
- Inventive Examples 8-12 correspond to Film Samples B-F.
- the films were wrapped at a 200% pre- stretch and a turntable speed of 9 rpm.
- the tangential angle of the films as they were unwrapped from the supply roll was approximately 60 degrees without the use of the above described invention and was increased to 180 degrees when the present invention was employed.
- Comparative Run 7 utilizes Film Sample A.
- Inventive Examples 8-12 correspond to Film Samples B-F.
- the films were wrapped at a 200% pre- stretch and a turntable speed of 9 rpm
- Film Sample A was not a self -adhering film and does not exhibit the elevated noise levels ordinarily associated with unwrapping with cling film such as, for example, Comparative Runs 2-6. However, Film Sample A (Comparative Runs 1 and 7) conveniently demonstrates that some of the noise generated during unwrapping with the Lantech Stretch
- Comparative Runs 1 and 7 essentially represent an inherently "quiet" films.
- the noise level of Film Sample B a commercial stretch cling film which was considered one of the noisiest in the industry, was surprisingly reduced more than 33% (Inventive Example 8) by adjusting the rollstock speed to substantially exceed the speed of the first power pre-stretch roller on the Lantech Stretch Wrapper. Adjusting the rollstock speed resulted in the unwrapping take-off angle increasing from 60 degrees at its undisturbed state to 180 degrees.
- Inventive Examples 9-12 also exhibit substantially reduced noise levels utilizing the same method and modified equipment described for Inventive Example 8.
- the speed of a rollstock (Film Sample B having a 8 inch (20.3 cm) roll diameter) was momentarily accelerated relative to the speed of the first power pre-stretch roller and then reduced to substantially match the speed of the first power pre-stretch roller Film tensionmg was maintained at 200% elongation, the turntable speed was 9 rpms, the first power pre-stretch roller speed was 27.8 rpms (12.2 m/minute) and the rollstock speed after acceleration was 19.1 rpms (12 m/minute) .
- Table 4 illustrates the various noise levels measured for Film Sample B as the unwrapping take-off angle was consequently varied by varying the rollstock speed.
- Table 5 illustrates the effect of varying the turntable speed and the percent elongation on noise levels with and without affecting the unwrapping take-off angle
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP96926743A EP0918718A1 (en) | 1996-07-18 | 1996-07-18 | Low-noise film unwrapping method and device |
PCT/US1996/011899 WO1998003417A1 (en) | 1996-07-18 | 1996-07-18 | Low-noise film unwrapping method and device |
AU66779/96A AU6677996A (en) | 1996-07-18 | 1996-07-18 | Low-noise film unwrapping method and device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/US1996/011899 WO1998003417A1 (en) | 1996-07-18 | 1996-07-18 | Low-noise film unwrapping method and device |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998003417A1 true WO1998003417A1 (en) | 1998-01-29 |
Family
ID=22255480
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1996/011899 WO1998003417A1 (en) | 1996-07-18 | 1996-07-18 | Low-noise film unwrapping method and device |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0918718A1 (en) |
AU (1) | AU6677996A (en) |
WO (1) | WO1998003417A1 (en) |
Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1094407A (en) * | 1953-11-17 | 1955-05-20 | Heavy coil inertia compensating mechanism | |
GB1136557A (en) * | 1965-04-10 | 1968-12-11 | Kalle Ag | Method of and apparatus for unwinding a rolled web of material |
US3467331A (en) * | 1967-11-08 | 1969-09-16 | Fmc Corp | Film unwinding method and apparatus |
US3989201A (en) * | 1974-11-22 | 1976-11-02 | Champion International Corporation | Film driving mechanism for high inertia storage rolls |
DE2824433A1 (en) * | 1978-06-03 | 1979-12-06 | Krempel August Soehne | Foil dispenser for packaging machine - has motor for drive roller controlled by switch operated by moving tension roller assembly |
EP0101366A1 (en) * | 1982-08-17 | 1984-02-22 | Aerospatiale Societe Nationale Industrielle | Cutting machine for pieces of web material |
FR2563507A1 (en) * | 1984-04-25 | 1985-10-31 | Rassinoux Sa | Packaging film unwinder |
US4699816A (en) * | 1984-12-31 | 1987-10-13 | Manuli Autoadesivi S.P.A. | Adhesive tapes |
DE3831944A1 (en) * | 1988-09-20 | 1990-04-05 | Siemens Ag | Device for unwinding thin ribbons without overstretching |
DE3902919A1 (en) * | 1989-02-01 | 1990-08-02 | Heinz Leroy | Pack-wrapping machine for stretch foils |
JPH05116257A (en) * | 1991-10-25 | 1993-05-14 | Asahi Chem Ind Co Ltd | Multilayer pressure-sensitive adhesive film |
US5273809A (en) * | 1987-04-17 | 1993-12-28 | Mobil Oil Corporation | Multilayer stretch wrap film inherently exhibiting a significant cling property |
US5460863A (en) * | 1993-06-02 | 1995-10-24 | Minnesota Mining And Manufacturing Company | Composite structures |
-
1996
- 1996-07-18 AU AU66779/96A patent/AU6677996A/en not_active Abandoned
- 1996-07-18 EP EP96926743A patent/EP0918718A1/en not_active Withdrawn
- 1996-07-18 WO PCT/US1996/011899 patent/WO1998003417A1/en not_active Application Discontinuation
Patent Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1094407A (en) * | 1953-11-17 | 1955-05-20 | Heavy coil inertia compensating mechanism | |
GB1136557A (en) * | 1965-04-10 | 1968-12-11 | Kalle Ag | Method of and apparatus for unwinding a rolled web of material |
US3467331A (en) * | 1967-11-08 | 1969-09-16 | Fmc Corp | Film unwinding method and apparatus |
US3989201A (en) * | 1974-11-22 | 1976-11-02 | Champion International Corporation | Film driving mechanism for high inertia storage rolls |
DE2824433A1 (en) * | 1978-06-03 | 1979-12-06 | Krempel August Soehne | Foil dispenser for packaging machine - has motor for drive roller controlled by switch operated by moving tension roller assembly |
EP0101366A1 (en) * | 1982-08-17 | 1984-02-22 | Aerospatiale Societe Nationale Industrielle | Cutting machine for pieces of web material |
FR2563507A1 (en) * | 1984-04-25 | 1985-10-31 | Rassinoux Sa | Packaging film unwinder |
US4699816A (en) * | 1984-12-31 | 1987-10-13 | Manuli Autoadesivi S.P.A. | Adhesive tapes |
US5273809A (en) * | 1987-04-17 | 1993-12-28 | Mobil Oil Corporation | Multilayer stretch wrap film inherently exhibiting a significant cling property |
DE3831944A1 (en) * | 1988-09-20 | 1990-04-05 | Siemens Ag | Device for unwinding thin ribbons without overstretching |
DE3902919A1 (en) * | 1989-02-01 | 1990-08-02 | Heinz Leroy | Pack-wrapping machine for stretch foils |
JPH05116257A (en) * | 1991-10-25 | 1993-05-14 | Asahi Chem Ind Co Ltd | Multilayer pressure-sensitive adhesive film |
US5460863A (en) * | 1993-06-02 | 1995-10-24 | Minnesota Mining And Manufacturing Company | Composite structures |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 17, no. 483 (M - 1472) 2 September 1993 (1993-09-02) * |
Also Published As
Publication number | Publication date |
---|---|
EP0918718A1 (en) | 1999-06-02 |
AU6677996A (en) | 1998-02-10 |
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