New! View global litigation for patent families

US3867806A - Process of making a stretched-wrapped package - Google Patents

Process of making a stretched-wrapped package Download PDF

Info

Publication number
US3867806A
US3867806A US34787373A US3867806A US 3867806 A US3867806 A US 3867806A US 34787373 A US34787373 A US 34787373A US 3867806 A US3867806 A US 3867806A
Authority
US
Grant status
Grant
Patent type
Prior art keywords
means
material
load
dispenser
invention
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.)
Expired - Lifetime
Application number
Inventor
Iii Patrick R Lancaster
William G Lancaster
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lantech Inc
Wrapmatic Inc
Original Assignee
Lantech Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Grant date

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B11/00Wrapping, e.g. partially or wholly enclosing, articles, or quantities of material, in strips, sheets or blanks, of flexible material
    • B65B11/04Wrapping, e.g. partially or wholly enclosing, articles, or quantities of material, in strips, sheets or blanks, of flexible material the articles being rotated
    • B65B11/045Wrapping, e.g. partially or wholly enclosing, articles, or quantities of material, in strips, sheets or blanks, of flexible material the articles being rotated by rotating platforms supporting the articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B11/00Wrapping, e.g. partially or wholly enclosing, articles, or quantities of material, in strips, sheets or blanks, of flexible material
    • B65B11/58Applying two or more wrappers, e.g. in succession
    • B65B11/585Applying two or more wrappers, e.g. in succession to stacked articles, e.g. pallettised loads

Abstract

This invention provides a process for making a unitary package which comprises a load that has a band formed of plural layers of a stretched material wrapped around it. Basically the process comprises the steps of: placing a load on a support; locating a rolled-up sheet of stretchable material on dispenser means adjacent to the support; withdrawing a leading edge of the material from the dispenser means and holding that leading edge against the load; initiating substantially unrestricted relative movement between the support and dispenser means to cause a sufficient amount of the material to overwrap at least a part of the load; subsequently continuing the relative movement but restricting it such that the material will then be stretched and causing a sufficient amount of the stretched material to be dispensed from the dispenser means to provide a band comprising plural layers of the material around the load; and fastening the trailing edge of the dispensed stretched material to at least one of the previously dispensed band-forming layers. The present invention is also directed toward a product that is produced by this process and to certain apparatus which can be utilized to perform this process.

Description

United States Patent Lancaster, III et al.

[45] Feb. 25, 1975 PROCESS OF MAKING A Primary ExaminerTravis S. McGehee STRETCHED.WRAPPED PACKAGE Assistant Examiner-John Sipos [75] Inventors: Patrick R. Lancaster, III; William Attorney Agent or Flrm Harry O Donne G.Lncatr,bth fL 'll,K.

a se .0. OUlSVl e y ABSTRACT [73] Asslgnee' Lamech Loulsvlue This invention provides a process for making a unitary [22] Filed: Apr. 4, 1973 package which comprises a load that has a band formed of plural layers of a stretched material [21] App1'NO"347873 wrapped around it. Basically the process comprises the steps of: placing a load on a support; locating a [52] US. Cl. 53/27, 53/30 rolled-up sheet of stretchable material on dispenser [51] Int. Cl B65b /06 means adjacent to the support; withdrawing a leading [58] Field of Search 53/27, 30, 33, 184,211, edge of the material from the dispenser means and 53/212, 214; 242/7543 holding that leading edge against the load; initiating substantially unrestricted relative movement between [56] References Cited the support and dispenser means to cause a sufficient UNITED STATES PATENTS amount of the material to overwrap at least a part of the load; subsequently continuing the relative movegg g ment but restricting it such that the material will then 6:032 12/1963 i h rug/7543 be stretched and causing a sufficient amount of the 1 3 9 g Hairless 2 5 stretched material to be dispensed from the dispenser 3,495,375 2/1970 Burh0p 53/33 means to provide a band comprising plural layers of 3.5l4.920 6/1970 Hoffler..... 53/184 X the material around the load; and fastening the trailing 3,589.l02 6/1971 Zelnick 53/ X edge of the dispensed stretched material to at least 3596434 8/1971 zlchllck 53/182 X one of the previously dispensed band-forming layers. 28 2/1972 i f 53/30 The present invention is also directed toward a prod- 3,68,. 33 8/1972 Lassig 53/33 uct that is produced by this process and to Certain paratus which can be utilized to perform this process.

10 Claims, 9 Drawing Figures I If] \il i:\ 1 i l H /9\ 27/ 43 i, i a 40 l l7 i lz i l6 l7 l ll 36 I 3 PATENTEI] FEB25 I975 ShEET 2 BF 2 PROCESS OF MAKING A STRETCHED-WRAPPED PACKAGE BACKGROUND OF THE INVENTION This invention relates to packaging and, more particularly, to a process for making a unitary package which comprises a load that has a band formed of plural layers of a stretched material wrapped around it. The present invention is also concerned with the product produced by such a process and to certain apparatus which can be utilized to perform the process.

In the past, various methods and apparatus have been utilized to provide a unitary package comprising a load having at least a portion of its surface overwrapped by a heat-shrunk material. Such methods are commonly referred to as shrink-palletizing" processes and basically comprise unitization of a palletized package load by first overwrapping it with a heat shrinkable material which is then tightly shrunk against the package load by applying sufficient heat to the overwrapped load to raise its temperature to the heat-shrinking temperature of the overwrapping material. Our co-pending, commonly assigned US. Patent application Ser. No. 295,532, filed Oct. 6, 1972, describes a most recent and efficient form of such shrink-palletizing systems; while older forms thereof have been described in detail in US. Pat. Nos. 3,514,920; 3,581,458; 3,590,549; 3,626,654; 3,640,048; 3,662,512; and 3,670,880.

While the aforedescribed shrink-palletizing systems have produced a product which has been generally satisfactory, they require heating means and, if a portion of the overwrapped package load is removed after completion of the heating step, the remaining portions tend to become loosened since the overwrapping material becomes permanently set and loses its elasticity after the heating has been performed.

Previous attempts have been made to overcome these disadvantages of the shrink-palletizing" systems by substituting non-heated overwrapping systems, such as that described in US. Pat. No. 3,495,375 and another marketed by Arenco Machine Company, Inc., of Teterboro, New Jersey. Such non-heated systems are commonly known as stretch-palletizing systems, wherein the package load is overwrapped by a single.- layer band of stretchable material that is held in tension around the package load but not heat-shrunk to it. While eliminating the cost of the heating means and step and the problems of loss of elasticity and load loosening which exist in the shrink-palletizing systems, these prior art single-layer band stretch-palletizing systems have several disadvantages of their own. For one example, the trailing edge or edges of the bandforming overwrapping material must be fin-sealed (as opposed to lap-sealed) along substantially their entire width and this requires elaborate clamping and sealing means. For another, tension is not evenly applied to the material forming the overwrapping band. And, for yet another, the sharp edges of the surface of the overwrapped package load tend to pierce the single layer of the tensioned wrapper band as it is dispensed therearound.

The present invention is particularly concerned with providing an improved process for producing a unitary vides similar advantages over the aforedescri-bed shrink-palletizing systems, but which also eliminates the aforenoted problems which have heretofore plagued the earlier forms of stretch-palletizing" systerns.

SUMMARY OF THE INVENTION The present invention provides a process for making a unitary package which comprises a load that has a band formed of plural layers of a stretched material wrapped around it.

Basically the process comprises the steps of: placing a load on a support; locating a rolled-up sheet of stretchable material on dispenser means adjacent to the support; withdrawing a leading edge of the material from the dispenser means and holding that leading edge against the load; initiating substantially unrestricted relative movement between the support and dispenser means to cause a sufficient amount of the material to overwrap at least a part of the load; subsequently continuing the relative movement but restricting it such that the material will then be stretched and causing a sufficient amount of the stretched material to be dispensed from the dispenser means to provide a band comprising plural layers of the material around the load; and fastening the trailing edge of the dispensed stretched material to at least one of the previously dispensed band-forming layers.

The present invention is also directed toward a product that is produced by this process and to certain apparatus which can be utilized to perform this process.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention is illustrated in the accompanying drawings wherein:

FIG. 1 is a somewhat schematic partly broken elevational perspective view showing a presently preferred form of apparatus that can be utilized in performing the novel process of the present invention to produce its novel unitary package, which comprises a load that has a band formed of plural layers of a stretched material wrapped around it, and illustrates the apparatus just following completion of the process;

FIG. 2 is a greatly enlarged fragmentary elevational view showing in detail the construction of the presently preferred forms of the overwrapping film dispenser means, restricting means for causing stretching of the dispensed film, control means for selectively adjusting the restricting means and cutter means for severing the dispensed material from the dispenser means of the apparatus shown in FIG. 1;

FIG. 3 is a fragmentary sectional view taken along line 3-3 of FIG. 2;

FIG. 4 is a schematic top plan view of the apparatus of FIG. 1 illustrating it in a first condition of operation;

FIG. 5 is a view similar to that shown in FIG. 4, but showing the apparatus in another condition of operation;

FIG. 6 is a view similar to that shown in FIGS. 4 and 5, but showing the apparatus in yet another condition of operation;

FIG. 7 is a greatly enlarged fragmentary sectional view taken along line 7-7 of FIG. 7;

FIG. 8 is a greatly enlarged fragmentary sectional view taken along line 8-8 of FIG. 5; and

FIG. 9 is a greatly enlarged fragmentary sectional view taken along line 9-9 of FIG. 6.

DETAILED DESCRIPTION Referring now to the drawings and more particularly to FIG. 1 thereof, there is illustrated, with parts broken away for purposes of illustration, a typical product, a unitary package 10, which can be produced in accordance with the novel process that is provided in accordance with the present invention. While it should be understood that various means could be employed, FIGS. l-9 of the drawings illustrate a form of apparatus 11 that has been used with good results in carrying out the novel process of the present invention to produce the product 10.

As further shown in FIG. 1, the product comprises a palletized load of plural boxes 12 built upon a skid l3 and has its generally vertically arranged portion overwrapped by a band 14 formed of plural layers of a stretched sheet of stretchable material 15 wherein the trailing edge 16 of the stretched material 15 is fastened to at least one of the previously wrapped band-forming layers of the material 15. Preferably, the material 15 is of a type that is heat laminateable and this fastening is performed by heat sealing means 17a (FIG. 6) which provides a plurality of fastening heat seals 17 that are aligned at an angle with respect to the trailing edge 16 of the sheet of material 15 and are spaced apart from one another.

As illustrated in FIGS. 1-9, the presently preferred form of apparatus 11 that can be employed to perform the process of the present invention to produce the product 10 basically includes a support means 18 for supporting the package load 12', dispenser means 19 for locating a rolled-up sheet of the material 15 for movement relative to the support means 18; drive means 20 for initiating substantially unrestricted relative movement between the support 18 and dispenser means 19 to cause a sufficient amount of the material [5 to be dispensed from the dispenser means 19 overwrap at least a part of the load 12 (FIG. 4); and restricting means 21, such as a brake best shown schematically in FIGS. 4-6 for restricting continuation of the relative movement such that the material 15 will then be stretched (FIG. 6) but permitting a sufficient amount of the stretched material 15 to be dispensed from the dispenser means 19 to provide the band 14 comprising plural layers of the material 15 around the load 12 (FIGS. 1, 6 and 9).

As best shown in FIGS. 1 and 4, the support means 18 preferably comprises a generally horizontally arranged platform 22 which can support the skid 13 for rotary movement about a generally vertically arranged axis. As schematically illustrated in FIG. 4, the platform 22 is supported on a vertical axle 23 journaled in a bearing 24 centrally located in a base 25 for the support means 18 and is suitably interconnected to the drive means 20, which can comprise a rotary electric motor 26 or other suitable means, for substantially unrestricted rotary movement around the generally vertical axis of the axle 23 (in a clockwise direction as viewed in FIGS. 4-6).

And, as best illustrated in FIGS. 1-6, the dispenser means 19 comprises a generally vertically arranged member or shaft 27 that is mounted on a base frame 28 located adjacent to the support means 20 for substantially unrestricted rotary movement relative thereto about a generally vertical axis. The upper end of this shaft 27 removably receives the lower end of and generally vertically supports a rolled-up sheet of the stretchable material 15, while the upper end ofthe rolled-up sheet is rotatably journaled by an upper journal member 29 which is mounted for slidable vertical movement relative to the base frame 28. This illustrated construction provides the dispenser means 19 with height adjustable means for mounting overwrapping material of various widths to thus accomodate overwrapping of package loads 12 of various heights.

While it should be understood that various other substantially equivalent means could be substituted, such as clutch means, etc., the presently preferred form of the restricting means 21 that are employed in the apparatus 11 comprise brake means which are provided adjacent the lower end of the dispenser means rotary shaft 27. As best shown in FIGS. 4-6, these illustrated restricting means 21 comprise a brake drum 30 which is fixed on the lower end of the dispenser means shaft 27 for rotation therewith and that can be engaged and disengaged by a brake shoe 31 which is carried by a brake lever 32 that is pivotally mounted to the dispenser means frame 28. As shown, the brake shoe 31 that is carried by the lever 32 is yieldably urged out of engagement with the brake drum 30 by a first tension spring 33 (FIGURE 4) to thus permit substantially unrestricted rotary movement of the dispenser means shaft 27. However, the yieldably urging of this first spring 33 can be overcome and the brake lever 32 can be pivoted to engage the brake shoe 31 carried by it with the brake drum 30 through movement of a cable 34 which has one of its ends connected to the pivoted brake lever 32. The brake cable 34 has its other end connected to a brake operating arm 35 that is pivotally mounted with respect to the dispenser means frame 28. The brake cable operating arm 35 is, in turn, yieldably urged by a second tension spring 36 in a direction causing the brake cable 34 to move the brake lever 32 with sufficient force to overcome the urging of the first spring 33 and thus cause engagement of the levercarried brake shoe 31 with the brake drum 30.

As further shown, this second tension spring 36 is connected between the dispenser frame 28 and the brake cable operating arm 35 by adjustable control means, such as the illustrated jack screw 37 and wire 38 and pulley 39 arragement, whereby the brake engaging counter-force which it provides with respect to the brake disengaging force of the first spring 33 can be readily adjusted. As further illustrated, a brake release device 40 is also pivotally mounted to the dispenser frame 28 which can be releasably engaged with the brake cable operating arm 35 to completely overcome the counter of the second spring 36 and allow the first spring 33 to fully release the lever-carried brake shoe 32 from engagement with the brake drum 30 (FIG. 4

However, it should be understood that barring engagement of the brake release device 40 with the brake cable operating arm 35, as shown in FIG. 4, or the exertion of some other releasing force thereupon, the second spring 36 will exert sufficient force to overcome that provided by the first spring 33 and the brake shoe 32 and drum 30 will remain engaged and movement of the dispenser roller shaft 27 will consequently be so restricted, as shown in FIGS. 5 and 6. 4).

In particular accordance with the present invention,

1 the brake cable operating arm 35 rotatably journals a generally vertically arranged roller 41 over which the leading edge of the rolled-up sheet of material can be first threaded prior to its engagement with the package load 12 at the commencement of the process of the present invention. And, during the initial part of the process of the present invention, the brake or restricting means release device 40 is preferably engaged with the brake cable operating arm 35 as shown in FIG. 4, to thus permit substantially unrestricted relative movement between the support 18 and dispenser 19 means upon energization of the drive means 20. However, once a portion of the package load 12 has been overwrapped, the brake release device 40 is pivoted, as shown in FIG. 5, out of engagement with the brake cable operating arm 35 and continued operation of the drive means 20 will cause relative movement between the support 18 and dispenser 19 means only when the pull of the drive means 20 as exerted through the portion of the dispensed sheet 15 passing over the brake cable operating arm roller 41 is sufficient to partially overcome the counter-force of the second spring 36 and thus permit sufficient movement of the wire 38, arm 35, cable 34 and lever 32 to allow the first spring 33 to partially release the brake shoe 31 from engagement with the dispenser shaft-carried brake drum 30. This restriction of relative movement by the restricting means 21 will, of course, cause the dispensed sheet of material 15 to then be stretched.

While it should be understood that various stretchable materials may be employed for the sheet of overwrapping material 15, good results can be obtained in accordance with the present invention by employing a polyethylene film having thickness in a range between 0.00075 and 0.004 inches and a specific gravity in a range from 0.915 through 0.922 which can be stretched in an elongation range of from 2 percent through 100 percent under from 600 to 2,000 P.S.I of force. And, while it should be similarly understood that various forms of equipment can be utilized for the heatsealing means 17a (FIG. 6) to perform the fastening step without departing from the true spirit and scope of the present invention, good results have been obtained by employing an inexpensive commercially available, electrically-powered hand-size heat sealer when the aforedescribed polyethylene filmwas utilized for the material 15. It should also be understood that this fastening might be accomplished other than by heat sealing, as by use of an adhesive or mechanical means, such as staples and the like, or other forms of fastening means.

Basically, the novel process that is provided in accordance with the present invention comprises the steps of: placing a load on a support; locating a rolled-up sheet of stretchable material on dispenser means adjacent to the support; withdrawing a leading edge of the material from the dispenser means and holding that leading edge against the load; initiating substantially unrestricted relative movement between the support and dispenser means to cause a sufficient amount of the material to overwrap at least a part of the load; subsequently continuing the relative movement but restricting it such that the material will then be stretched and causing a sufficient amount of the stretched material to be dispensed from the dispenser means to provide a band comprising plural layers of the material around the load; and fastening the trailing edge of the dispensed stretched material to at least one of the previously dispensed band-forming layers.

To produce a product, such as the illustrated unitary package 10, by the novel process of the present invention with the illustrated apparatus 11, an operator first mounts a rolled-up sheet of the material 15 having a width sufficient to cover at least the vertical portion of the package load 12 on the shaft 27 and upper journal member 29 of the dispenser means 19.

Next, the operator utilizes a fork-lift truck or other suitable conveyor means to place the package load 12 and its skid 13 atop the platform 22 of the support means 18 to align its center generally over that of the platform axle 23.

Then, the operator moves the brake release device 40 into engagement with the brake cable operating arm 35 as shown in solid lines in FIG. 4 and in shadow lines in FIG. 3 to fully release the restricting means 21 and permit substantially unrestricted rotary movement of the dispenser means shaft 27 and upper journal member 29.

Next, the operator withdraws the leading edge of the rolled-up sheet of the material 15 from the dispenser means 19 and, having first threaded it over the brake cable operating arm roller 41 as shown in solid lines in FIG. 4 and in shadow lines in FIG. 3, holds that leading edge against the vertical surface ofthe package load 12 either manually or with fastener means (not shown).

Then, the operator energizes the drive means 20 in a well-known manner through closure of switch means (not shown) which cause the drive means motor 26 to initiate rotation of the support means platform 22 and the package load 12 and skid 13 carried by it about the generally vertical axis of the platform shaft 23. This, in turn, causes substantially unrestricted relative movement between the support means 18 and the dispenser means 19 such that a sufficient amount of the rolled-up material 15 will be unwound or dispensed from the dispenser means 19 through the substantially unrestricted rotary movement of the support means platform 22 and the dispenser means shaft 27 and upper journal member 29 to overwrap at least a part of the package load 12. As illustrated, this substantially unrestricted movement is allowed to continue approximately one revolution of the support platform 22 and the package load 12 carried by it whereby a band comprising a single unstretched layer of the material 15 is overwrapped around the generally vertically arranged portion of the package load 12.

Now, as best shown in FIGS. 5 and 8, the operator can with a separate wrapper, such as an overcapping sheet 43, overwrap a portion of the package load 12 (the top of the package load 12 as illustrated) not previously overwrapped by the sheet of material 15.

Next, the operator pivots the brake release device 40 out of engagement with the brake cable operating arm 35, as shown in solid lines in FIGS. 3, 5 and 6, activating the restricting means 21 as previously described above, and continues energization of the drive means 20 and thus provides continuous but now restricted relative movement between the support 18 and dispenser means 19 such that the dispensed sheet material 15 will then be stretched and causing a sufficient amount of the stretched material 15 to be dispensed from the dispenser means 19 to provide the band 14 which comprises plural layers, including at least one outer stretched layer, as shown in FIG. 1, of the material 15 around the package load 12.

Then, as best shown in FIGS. 1 and 6, while maintaining the stretching of the dispensed sheet 15 through continued energization of the drive means 20, the operator fastens the trailing edge 16 of the stretched dispenser material 15 in an overlapping seal to at least one of the previously dispensed band-forming layers. As illustrated, this fastening is preferably performed by heat sealing, assuming the material is a heat laminateable material such as polyethylene, and the heat-sealing step is performed manually by the operator with means such as the illustrated heat-sealing device 1741 to provide the plurality of fastening heat seals 17 that are aligned at an angle (approximately a 90 degree angle) with respect to the width of the trailing edge of the dispensed material sheet 15 and are spaced apart from one another therealong.

Next, upon completion of this fastening step, the operator now severs the overwrapped package from the dispenser means, as by employing the illustrated dropknife cutter means 44 which is preferably mounted adjacent the support means 19 and finally de-energizes the drive means 20. The novel overwrapped product (FIG. 1) that is produced by the novel process of the present inventioncan now be removed from the support means platform 22 by a fork-lift or other suitable conveyor means.

The operator can selectively adjust the restrictive effect of the restricting means 21 through operation of the jack screw 37 of the aforedescribed control means to thereby selectively alter the degree of elongation of the stretched dispensed material 15.

It should be apparent that while there has been described what is presently considered to be a presently preferred form of the present invention in accordance with the Patent Statues, changes may be made in the disclosed process and product produced thereby without departing from the true spirit and scope of this invention. 1

For example, other equivalent forms of apparatus might be substituted for the illustrated apparatus 11. Various materials might be used for the material 15, so long as they are of a type that is stretchable. And, the optional overcapping sheet 43 could be installed either before or after the actuation of the restricting means 2l to cause the stretching of the sheet it being necessary only that such optional installation of the separate overcapping sheet 43 be performed prior to the dispensing of the outermost one of the plural layers of the sheet 15 which form the multi-layered band 14. It is, therefore, intended that the appended claims shall cover such modifications and applications that may not depart from the true spirit and scope of the present invention.

We claim:

1. A process of making a unitary package, comprising the steps of:

a. placing a load on a support;

b. locating a rolled-up sheet of a stretchable material on dispenser means adjacent to said support;

0. withdrawing a leading edge of said material from said dispenser means and holding said leading edge against said load;

d. initiating substantially unrestricted relative movement between said support and said dispenser means to cause a sufficient amount of said material to be dispensed from said dispenser means to overwrap at least a part of said load;

e. subsequently continuing said relative movement but restricting it such that said material will then be stretched and causing a sufficient amount of said stretched material to be dispensed from said dispenser means to provide a band comprising plural layers of said material around said load; and

f. fastening the trailing edge of said stretched material to at least one of the previously dispensed band-forming layers.

2. The invention of claim 1, further including an additional step, performed prior to dispensing the outermost one of said layers of said band, of overwrapping with a separate wrapper, a portion of said load not overwrapped by said sheet of material.

3. The invention of claim 2, further including an additional step of severing said material from said dis pensing means after completion of said step of fasten- 4. The invention of claim 1, further including an additional step of severing said material from said dispensing means after completion of said step of fastening.

5. The invention of claim 1, wherein said material is heat-laminateable and said fastening is performed by heat sealing.

6. The invention of claim 5, wherein said heat sealing provides a plurality of fastening heat seals that are aligned at an angle with respect to said trailing edge and are spaced apart from one another.

7. The invention of claim 6, wherein said material comprises polyethylene.

8. The invention of claim 1, wherein said material comprises polyethylene.

9. The invention of claim 8, wherein said material is stretched in an elongation range of 2 percent through percent by said. restricting.

10. The invention of claim 1, wherein said material is stretched in an elongation range of 2 percent through 100 percent by said restricting.

Claims (10)

1. A process of making a unitary package, comprising the steps of: a. placing a load on a support; b. locating a rolled-up sheet of a stretchable material on dispenser means adjacent to said support; c. withdrawing a leading edge of said material from said dispenser means and holding said leading edge against said load; d. initiating substantially unrestricted relative movement between said support and said dispenser means to cause a sufficient amount of said material to be dispensed from said dispenser means to overwrap at least a part of said load; e. subsequently continuing said relative movement but restricting it such that said material will then be stretched and causing a sufficient amount of said stretched material to be dispensed from said dispenser means to provide a band comprising plural layers of said material around said load; and f. fastening the trailing edge of said stretched material to at least one of the previously dispensed band-forming layers.
2. The invention of claim 1, further including an additional step, performed prior to dispensing the outermost one of said layers of said band, of overwrapping with a separate wrapper, a portion of said load not overwrapped by said sheet of material.
3. The invention of claim 2, further including an additional step of severing said material from said dispensing means after completion of said step of fastening.
4. The invention of claim 1, further including an additional step of severing said material from said dispensing means after completion of said step of fastening.
5. The invention of claim 1, wherein said material is heat-laminateable and said fastening is performed by heat sealing.
6. The invention of claim 5, wherein said heat sealing provides a plurality of fastening heat seals that are aligned at an angle with respect to said trailing edge and are spaced apart from one another.
7. The invention of claim 6, wherein said material comprises polyethylene.
8. The invention of claim 1, wherein said material comprises polyethylene.
9. The invention of claim 8, wherein said material is stretched in an elongation range of 2 percent through 100 percent by said restricting.
10. The invention of claim 1, wherein said material is stretched in an elongation range of 2 percent through 100 percent by said restricting.
US3867806A 1973-04-04 1973-04-04 Process of making a stretched-wrapped package Expired - Lifetime US3867806A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US3867806A US3867806A (en) 1973-04-04 1973-04-04 Process of making a stretched-wrapped package

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US3867806A US3867806A (en) 1973-04-04 1973-04-04 Process of making a stretched-wrapped package
CA 194732 CA1000606A (en) 1973-04-04 1974-03-12 Stretch-wrapped package, process and apparatus
GB1153274A GB1471054A (en) 1973-04-04 1974-03-14 Stretched-wrapped package process and apparatus
DE19742413807 DE2413807C3 (en) 1973-04-04 1974-03-22
JP3520174A JPS5713442B2 (en) 1973-04-04 1974-03-30
US05493050 US4050221A (en) 1973-04-04 1974-07-30 Stretch-wrapped package, process and apparatus
CA 251542 CA1018490A (en) 1973-04-04 1976-04-30 Stretch wrapped package process and apparatus

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US05493050 Division US4050221A (en) 1973-04-04 1974-07-30 Stretch-wrapped package, process and apparatus

Publications (1)

Publication Number Publication Date
US3867806A true US3867806A (en) 1975-02-25

Family

ID=23365646

Family Applications (1)

Application Number Title Priority Date Filing Date
US3867806A Expired - Lifetime US3867806A (en) 1973-04-04 1973-04-04 Process of making a stretched-wrapped package

Country Status (5)

Country Link
US (1) US3867806A (en)
JP (1) JPS5713442B2 (en)
CA (1) CA1000606A (en)
DE (1) DE2413807C3 (en)
GB (1) GB1471054A (en)

Cited By (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4050220A (en) * 1975-04-15 1977-09-27 Lancaster William G Spiral bundler
US4079565A (en) * 1974-03-25 1978-03-21 Lantech Inc. Stretch-wrapped package, process and apparatus
DE2756850A1 (en) * 1976-12-20 1978-06-22 Joseph Goldstein Stretch wrap machine
US4136501A (en) * 1977-10-11 1979-01-30 Bemis Company, Inc. Elastic plastic netting, and pallet load wrapping therewith
US4152879A (en) * 1977-06-21 1979-05-08 Shulman Michael H Spiral-wrap apparatus
DE3043807A1 (en) * 1979-11-21 1981-07-09 Lancaster P R Iii A method of packaging multiple parts into a packaging unit in a stretch film and packaging machine for carrying out this method
US4300326A (en) * 1980-03-10 1981-11-17 Lantech Inc. Stretch wrapping apparatus with mechanical closure
US4317322A (en) * 1980-05-20 1982-03-02 Lantech, Inc. Rotatable film wrapping apparatus with wrap carrying mechanism
USRE31191E (en) * 1977-10-11 1983-03-29 Bemis Company, Inc. Elastic plastic netting, and pallet load wrapping therewith
US4387548A (en) * 1979-11-21 1983-06-14 Lantech, Inc. Power assisted roller-stretch wrapping process
US4418510A (en) * 1979-09-12 1983-12-06 Lantech, Inc. Stretch wrapping apparatus and process
US4549388A (en) * 1983-09-13 1985-10-29 Lantech, Inc. Package sealing apparatus
DE3511120A1 (en) * 1985-03-27 1986-10-16 Bauer Ernst & Sohn Gmbh Co Kg Method and device for bundling slab-like articles, especially made of concrete or similar fictile materials
US4712686A (en) * 1980-09-08 1987-12-15 Lantech, Inc. Power assisted roller-stretch apparatus and process
US4741442A (en) * 1986-11-04 1988-05-03 Leucadia, Inc. Plastic netting for palletized loads with equal tension in all strands
US4815369A (en) * 1986-09-10 1989-03-28 Akins Edward A Injection of wrapped bale with anhydrous ammonia
US4866909A (en) * 1985-12-04 1989-09-19 Lantech, Inc. High tensile wrapping process
US4903494A (en) * 1989-08-21 1990-02-27 Wigley Freddie J Method for preparing ice for transportation
DE3901704A1 (en) * 1989-01-21 1990-08-02 Weber Hans Juergen Process and apparatus for wrapping the vertical sides of material to be packaged
US4979358A (en) * 1989-05-31 1990-12-25 Keip Charles P Rotary film wrapping apparatus
US4991381A (en) * 1989-06-07 1991-02-12 Liberty Industries Stretch wrapped braking apparatus
US5007538A (en) * 1987-03-04 1991-04-16 Appleton Papers Inc. Interleaved spiral wrapping of foam product and stretch film for packaging carbonless paper rolls
US5027579A (en) * 1989-05-31 1991-07-02 Keip Machine Company Wrapping apparatus
US5046298A (en) * 1990-05-08 1991-09-10 Haines And Emerson, Inc. Method and apparatus for wrapping a roll with stretch wrap
US5114012A (en) * 1987-03-04 1992-05-19 Wta Inc. Interleaved spiral wrapping of foam product and stretch film for packaging carbonless paper rolls
US5161348A (en) * 1989-06-02 1992-11-10 Weder Donald E Wrapping material for providing a decorative covering
US5296580A (en) * 1987-07-07 1994-03-22 Mitsui Petrochemical Industries, Ltd. Stretch packaging method employing multi-layer film
US5339601A (en) * 1991-05-03 1994-08-23 Highland Supply Corporation Decorative cover with band
US5491956A (en) * 1992-06-02 1996-02-20 Minnesota Mining And Manufacturing Company Variable stretch detackification adhesive tape unitizer system
US5775058A (en) * 1994-02-17 1998-07-07 Autefa Maschinenfabrik Gmbh Process and device for packing pressed bales as well as packing material blank
US5950400A (en) * 1996-10-31 1999-09-14 C & S Associates Apparatus and method for protecting rolled material
US20020056253A1 (en) * 2000-11-02 2002-05-16 Degrasse Steven E. Method and apparatus for wrapping a load
US6439383B1 (en) * 1994-01-18 2002-08-27 Saint-Gobain Vetrotex America, Inc. Packaging for shipment of fiber glass rovings
US20080066431A1 (en) * 2004-11-03 2008-03-20 Cousins Neil G Stretch wrap machine with top corner film transfer
US20090293425A1 (en) * 2008-05-29 2009-12-03 Atlantic Corporation Systems for monitoring and controlling usage of materials
US20120102887A1 (en) * 2010-10-29 2012-05-03 Lantech.Com, Llc Machine Generated Wrap Data
US20140190127A1 (en) * 2013-01-04 2014-07-10 Tama Plastic Industry Method and apparatus for securing baled items
US20140215968A1 (en) * 2008-05-28 2014-08-07 Lantech.Com, Llc Film Clamp And Related Methods And Apparatuses For Wrapping Loads
EP3081526A1 (en) 2015-04-14 2016-10-19 Aranguren Comercial del Embalaje SL Transportable wrapper stacker machine
US9488557B2 (en) 2010-10-29 2016-11-08 Lantech.Com, Llc Machine generated wrap data
US9776748B2 (en) 2013-02-13 2017-10-03 Lantech.Com, Llc Containment force-based wrapping

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1064380A (en) * 1976-05-28 1979-10-16 William G. Lancaster Automatic wrapping apparatus
JPS5215791A (en) * 1975-07-25 1977-02-05 Ozeki Tekko Kk Stretch packaging machine
JPS5443958B2 (en) * 1975-07-30 1979-12-22
JPS5220197A (en) * 1975-08-04 1977-02-15 Okazaki Kikai Kogyo Kk Cargo packaging method and apparatus
JPS5237063U (en) * 1975-09-09 1977-03-16
JPS5266089A (en) * 1975-11-25 1977-06-01 Kenji Ishida Goods packaging method
JPS52130783A (en) * 1976-04-27 1977-11-02 Toyo Kohan Co Ltd Method and equipment for wrapping box with paper automatically
DE2717647C3 (en) * 1977-04-21 1981-07-16 C. Keller Gmbh U. Co Kg, 4530 Ibbenbueren, De
DE2720576C2 (en) * 1977-05-07 1983-06-30 C. Keller Gmbh U. Co Kg, 4530 Ibbenbueren, De
DE2836590C2 (en) * 1978-08-21 1980-07-10 C. Keller Gmbh U. Co Kg, 4530 Ibbenbueren
DE3100371C2 (en) * 1981-01-09 1986-09-25 Sanpack-Gesellschaft Greiner & Co (Gmbh & Co), 2000 Hamburg, De
DE3200220A1 (en) * 1982-01-07 1983-07-14 Nuetro Patentverwertungs U Mas Device for prestretching stretchable film for wrapping articles stacked on a pallet
ES8404272A1 (en) * 1983-01-25 1984-05-01 Robopac Srl Method and corresponding device for wrapping containers and the like.
EP0122230A1 (en) * 1983-04-07 1984-10-17 SIG Schweizerische Industrie-Gesellschaft Tension controlling device in an elongate element
DE3344940A1 (en) * 1983-12-13 1985-06-20 Helmut Schenke A method for wrapping of stacked well
GB2169260B (en) * 1984-10-08 1989-04-26 British Oxygen Co Ltd Improvements in stretch wrapping
CA1279815C (en) * 1985-12-04 1991-02-05 Patrick R. Lancaster, Iii High tensile wrapping process
ES2000561A6 (en) * 1986-07-24 1988-03-01 Inpropack S L Automatic pallet wrapping machine
WO2008135580A1 (en) * 2007-05-07 2008-11-13 Toppy S.R.L. Device and method for wrapping a package

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2545243A (en) * 1948-07-10 1951-03-13 Jr Herbert Rumsey Package encased in plastic sheet material and method of making the same
US2914893A (en) * 1952-03-11 1959-12-01 Carl J Berst Method and apparatus for packaging in a pre-stretched wrap of subsequently shrinkable material
US3116032A (en) * 1961-06-28 1963-12-31 Package Machinery Co Web feeding system
US3419228A (en) * 1967-01-03 1968-12-31 Harris Intertype Corp Web tensioning apparatus
US3495375A (en) * 1967-04-20 1970-02-17 Anchor Hocking Corp Stabilizing unit loads using tensioned film
US3514920A (en) * 1968-04-17 1970-06-02 Reynolds Metals Co Apparatus for overwrapping a package
US3589102A (en) * 1968-11-05 1971-06-29 Weldotron Corp Rotary method and apparatus for wrapping a pallet load
US3596434A (en) * 1970-06-24 1971-08-03 Weldotron Corp Automatic pallet wrapping machine
US3640048A (en) * 1968-10-07 1972-02-08 Weldotron Corp Method and apparatus for a pallet load
US3685233A (en) * 1970-06-16 1972-08-22 Laessig Foerdertech Hamburg Method of welding sheets,particularly shrink-on-sheets which have been wrapped around a pallet cargo and apparatus therefor

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2811916A (en) * 1953-07-01 1957-11-05 Guilleminot Roger Packaging machine
US3003297A (en) * 1960-05-31 1961-10-10 J & B Mfg Company Apparatus for wrapping articles with tape
US3213975A (en) * 1963-12-04 1965-10-26 Wagner Electric Corp Spring applied fluid pressure release brake
BE693475A (en) * 1966-02-04 1967-07-17
US3662512A (en) * 1968-01-24 1972-05-16 Weldotron Corp Method and apparatus for shrink-film wrapping a pallet load
US3581458A (en) * 1968-02-07 1971-06-01 Olov Erland Gustavsson Method of shrinking a sleeve- or cap-shaped wrapping of heat-shrinkable plastic sheet surrounding a transport unit and an apparatus for carrying out the method
GB1225223A (en) * 1968-02-19 1971-03-17
US3626654A (en) * 1968-04-17 1971-12-14 Reynolds Metals Co Method of overwrapping a package
US3590549A (en) * 1968-06-07 1971-07-06 Weldotron Corp Method and apparatus for wrapping a pallet load
DE2065102C3 (en) * 1970-01-22 1975-07-17 Guenther Dr.-Ing. 4800 Bielefeld Schick
DE2022577C3 (en) * 1970-05-08 1980-03-13 Kooperativa Foerbundet (Kf) Ekonomisk Foerening, Stockholm
US3672116A (en) * 1970-05-11 1972-06-27 Kooperativa Foerbundet Method and machine for packaging goods
US3670880A (en) * 1970-08-07 1972-06-20 Dresser Ind Package for flexible products
DE2139499C3 (en) * 1971-08-06 1975-06-05 Ngz Geldzaehlmaschinengesellschaft Mbh & Co Fertigungs-Kg, 1000 Berlin

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2545243A (en) * 1948-07-10 1951-03-13 Jr Herbert Rumsey Package encased in plastic sheet material and method of making the same
US2914893A (en) * 1952-03-11 1959-12-01 Carl J Berst Method and apparatus for packaging in a pre-stretched wrap of subsequently shrinkable material
US3116032A (en) * 1961-06-28 1963-12-31 Package Machinery Co Web feeding system
US3419228A (en) * 1967-01-03 1968-12-31 Harris Intertype Corp Web tensioning apparatus
US3495375A (en) * 1967-04-20 1970-02-17 Anchor Hocking Corp Stabilizing unit loads using tensioned film
US3514920A (en) * 1968-04-17 1970-06-02 Reynolds Metals Co Apparatus for overwrapping a package
US3640048A (en) * 1968-10-07 1972-02-08 Weldotron Corp Method and apparatus for a pallet load
US3589102A (en) * 1968-11-05 1971-06-29 Weldotron Corp Rotary method and apparatus for wrapping a pallet load
US3685233A (en) * 1970-06-16 1972-08-22 Laessig Foerdertech Hamburg Method of welding sheets,particularly shrink-on-sheets which have been wrapped around a pallet cargo and apparatus therefor
US3596434A (en) * 1970-06-24 1971-08-03 Weldotron Corp Automatic pallet wrapping machine

Cited By (53)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4079565A (en) * 1974-03-25 1978-03-21 Lantech Inc. Stretch-wrapped package, process and apparatus
US4050220A (en) * 1975-04-15 1977-09-27 Lancaster William G Spiral bundler
DE2756850A1 (en) * 1976-12-20 1978-06-22 Joseph Goldstein Stretch wrap machine
US4152879A (en) * 1977-06-21 1979-05-08 Shulman Michael H Spiral-wrap apparatus
US4136501A (en) * 1977-10-11 1979-01-30 Bemis Company, Inc. Elastic plastic netting, and pallet load wrapping therewith
FR2406016A1 (en) * 1977-10-11 1979-05-11 Bemis Co Inc Mesh plastic material and pallet load wrapped in this net
USRE31191E (en) * 1977-10-11 1983-03-29 Bemis Company, Inc. Elastic plastic netting, and pallet load wrapping therewith
US4418510A (en) * 1979-09-12 1983-12-06 Lantech, Inc. Stretch wrapping apparatus and process
DE3043807A1 (en) * 1979-11-21 1981-07-09 Lancaster P R Iii A method of packaging multiple parts into a packaging unit in a stretch film and packaging machine for carrying out this method
US4302920A (en) * 1979-11-21 1981-12-01 Lantech Inc. Film web drive stretch wrapping apparatus and process
US4387548A (en) * 1979-11-21 1983-06-14 Lantech, Inc. Power assisted roller-stretch wrapping process
US4300326A (en) * 1980-03-10 1981-11-17 Lantech Inc. Stretch wrapping apparatus with mechanical closure
US4317322A (en) * 1980-05-20 1982-03-02 Lantech, Inc. Rotatable film wrapping apparatus with wrap carrying mechanism
US4712686A (en) * 1980-09-08 1987-12-15 Lantech, Inc. Power assisted roller-stretch apparatus and process
US4549388A (en) * 1983-09-13 1985-10-29 Lantech, Inc. Package sealing apparatus
DE3511120A1 (en) * 1985-03-27 1986-10-16 Bauer Ernst & Sohn Gmbh Co Kg Method and device for bundling slab-like articles, especially made of concrete or similar fictile materials
US4866909A (en) * 1985-12-04 1989-09-19 Lantech, Inc. High tensile wrapping process
US4815369A (en) * 1986-09-10 1989-03-28 Akins Edward A Injection of wrapped bale with anhydrous ammonia
US4741442A (en) * 1986-11-04 1988-05-03 Leucadia, Inc. Plastic netting for palletized loads with equal tension in all strands
US5114012A (en) * 1987-03-04 1992-05-19 Wta Inc. Interleaved spiral wrapping of foam product and stretch film for packaging carbonless paper rolls
US5007538A (en) * 1987-03-04 1991-04-16 Appleton Papers Inc. Interleaved spiral wrapping of foam product and stretch film for packaging carbonless paper rolls
US5296580A (en) * 1987-07-07 1994-03-22 Mitsui Petrochemical Industries, Ltd. Stretch packaging method employing multi-layer film
DE3901704A1 (en) * 1989-01-21 1990-08-02 Weber Hans Juergen Process and apparatus for wrapping the vertical sides of material to be packaged
US5027579A (en) * 1989-05-31 1991-07-02 Keip Machine Company Wrapping apparatus
US4979358A (en) * 1989-05-31 1990-12-25 Keip Charles P Rotary film wrapping apparatus
US5396992A (en) * 1989-06-02 1995-03-14 Highland Supply Corporation Wrapping material for providing a decorative covering
US5161348A (en) * 1989-06-02 1992-11-10 Weder Donald E Wrapping material for providing a decorative covering
US4991381A (en) * 1989-06-07 1991-02-12 Liberty Industries Stretch wrapped braking apparatus
USRE34533E (en) * 1989-08-21 1994-02-08 Wigley; Freddie J. Method for preparing ice for transportation
US4903494A (en) * 1989-08-21 1990-02-27 Wigley Freddie J Method for preparing ice for transportation
US5046298A (en) * 1990-05-08 1991-09-10 Haines And Emerson, Inc. Method and apparatus for wrapping a roll with stretch wrap
US5339601A (en) * 1991-05-03 1994-08-23 Highland Supply Corporation Decorative cover with band
US5491956A (en) * 1992-06-02 1996-02-20 Minnesota Mining And Manufacturing Company Variable stretch detackification adhesive tape unitizer system
US6439383B1 (en) * 1994-01-18 2002-08-27 Saint-Gobain Vetrotex America, Inc. Packaging for shipment of fiber glass rovings
US5775058A (en) * 1994-02-17 1998-07-07 Autefa Maschinenfabrik Gmbh Process and device for packing pressed bales as well as packing material blank
US5950400A (en) * 1996-10-31 1999-09-14 C & S Associates Apparatus and method for protecting rolled material
US20020056253A1 (en) * 2000-11-02 2002-05-16 Degrasse Steven E. Method and apparatus for wrapping a load
US7137233B2 (en) 2000-11-02 2006-11-21 Lantech.Com, Llc Method and apparatus for wrapping a load
US20100236192A1 (en) * 2004-11-03 2010-09-23 Cousins Neil G Stretch wrap machine with top corner film transfer
US7775016B2 (en) * 2004-11-03 2010-08-17 Cousins Neil G Stretch wrap machine with top corner film transfer
US8166732B2 (en) 2004-11-03 2012-05-01 Cousins Packaging Inc. Stretch wrap machine with top corner film transfer
US20080066431A1 (en) * 2004-11-03 2008-03-20 Cousins Neil G Stretch wrap machine with top corner film transfer
US20140215968A1 (en) * 2008-05-28 2014-08-07 Lantech.Com, Llc Film Clamp And Related Methods And Apparatuses For Wrapping Loads
US9290285B2 (en) * 2008-05-28 2016-03-22 Lantech.Com, Llc Film clamp and related methods and apparatuses for wrapping loads
US8001745B2 (en) 2008-05-29 2011-08-23 Atlantic Corporation Systems for monitoring and controlling usage of materials
US20090293425A1 (en) * 2008-05-29 2009-12-03 Atlantic Corporation Systems for monitoring and controlling usage of materials
US9488557B2 (en) 2010-10-29 2016-11-08 Lantech.Com, Llc Machine generated wrap data
US20120102887A1 (en) * 2010-10-29 2012-05-03 Lantech.Com, Llc Machine Generated Wrap Data
US9493262B2 (en) * 2010-10-29 2016-11-15 Lantech.Com, Llc Machine generated wrap data
US20140190127A1 (en) * 2013-01-04 2014-07-10 Tama Plastic Industry Method and apparatus for securing baled items
US9745087B2 (en) * 2013-01-04 2017-08-29 Tama Plastic Industry Method and apparatus for securing baled items
US9776748B2 (en) 2013-02-13 2017-10-03 Lantech.Com, Llc Containment force-based wrapping
EP3081526A1 (en) 2015-04-14 2016-10-19 Aranguren Comercial del Embalaje SL Transportable wrapper stacker machine

Also Published As

Publication number Publication date Type
DE2413807B2 (en) 1981-06-19 application
DE2413807A1 (en) 1974-10-17 application
CA1000606A (en) 1976-11-30 grant
CA1000606A1 (en) grant
JPS5041688A (en) 1975-04-16 application
GB1471054A (en) 1977-04-21 application
DE2413807C3 (en) 1985-01-03 grant
JPS5713442B2 (en) 1982-03-17 grant

Similar Documents

Publication Publication Date Title
US3429095A (en) Method of forming a palletized load
US3471990A (en) Apparatus for and method of stretching,sealing and removing the tab from packages
US3490194A (en) Packaging machine
US4619102A (en) Wrapper sealing system
US3967433A (en) Process and machine for wrapping and packaging items in stretchable foil material
US4593517A (en) Method and apparatus for packing goods
US5467581A (en) Apparatus and process for positioning a fitment
US6212859B1 (en) Packaging machine with rotary top sealer
US20070204565A1 (en) Method and apparatus for metered pre-stretch film delivery
US4549388A (en) Package sealing apparatus
US6269610B1 (en) Method and apparatus for stretch wrapping a load
US5195297A (en) Unitized display packages and method and apparatus for utilizing display packages
US8276353B2 (en) Apparatus for providing end seals on vertical stand-up packages
US4036362A (en) Package
US4387552A (en) Wrapping apparatus
US6293074B1 (en) Method and apparatus for stretch wrapping a load
US3314210A (en) Process and a device for manufacturing packages
US3514920A (en) Apparatus for overwrapping a package
US20060254225A1 (en) Stretch wrapping apparatus having film dispenser with pre-stretch assembly
US5450709A (en) Stationary pallet stretch wrapping device having improved method and apparatus for gripping and cutting or wrapping film
US3504476A (en) Method of packaging
US4418510A (en) Stretch wrapping apparatus and process
US4953336A (en) High tensile wrapping apparatus
US4317322A (en) Rotatable film wrapping apparatus with wrap carrying mechanism
US4593518A (en) Flexible wrapping apparatus

Legal Events

Date Code Title Description
AS Assignment

Owner name: WRAPMATIC, INC., 441 MARKET STREET, SADDLE BROOK,

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST. SUBJECT TO CONDITIONS RECITED;ASSIGNOR:DERMANSKY, IRA;REEL/FRAME:004819/0457

Effective date: 19870508

Owner name: WRAPMATIC, INC.,NEW JERSEY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:DERMANSKY, IRA;REEL/FRAME:004819/0457

Effective date: 19870508