CN100558549C - Flexible carrier with regions of higher and lower energy treatment - Google Patents
Flexible carrier with regions of higher and lower energy treatment Download PDFInfo
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- CN100558549C CN100558549C CNB2004800380838A CN200480038083A CN100558549C CN 100558549 C CN100558549 C CN 100558549C CN B2004800380838 A CNB2004800380838 A CN B2004800380838A CN 200480038083 A CN200480038083 A CN 200480038083A CN 100558549 C CN100558549 C CN 100558549C
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- flexible carrier
- sided corona
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Abstract
A kind of flexible carrier (30) is used to carry a plurality of container for drink, comprises a plurality of pan straddles (25), and each support has high power treatment (26) part and low energy is handled (24) part.Energy process is corona or plasma treatment, and high power treatment (26) part provides the better friction of carriage to container.By the grade of change energy process and the relative size of processed part, can control the total amount of friction between flexible carrier (30) and the container.
Description
Technical field
The present invention relates to a kind of flexible carrier that carries beverage can and bottle.Flexible carrier has height energy process zone, and so that the friction to container to be provided, this zone is made coarsely relatively preventing container landing in transportation, sale and user's handling process, and is also relatively easy to user's removal container from the carriage.
Background technology
Flexible carrier is used to carry various container for drink as four packings, six packings, eight packings, ten packings, 12 packings etc., and flexible carrier is the carriage that is stretched in being applied to the process of container.And container can be made by plastics, metal or glass, and flexible carrier is made of plastics.
The difficulty that beverage industry faces is to obtain friction and lubricated suitable balance between flexible carrier and filling containers.If it is too little to rub, and lubricated too strong, when multi-container package was handled upside down or transport, filling containers may skid off from carriage so.If it is too big to rub, the consumer takes out single container from carriage may difficulty.Equally, because the jaw of applicator may be can not let go carriage, the carriage machine applications is become more difficult in container.
The inducement that forms flexible carrier with few relatively, cheap plastic material has constituted aforementioned challenges, therefore need make these materials be fit to the container that different size, shape, weight and material are formed.Flexible carrier is made up of polyolefin usually, for example polyethylene.The container of carriage clamping can restrain several kilograms from several on weight; Scope can be wide from being too narrow to, and size is from being short to length; Can constitute by various plastics, metal or glass; And smooth label or further feature can be arranged, it is difficult in obtains best frictional force between carriage and the container.
Made great efforts in various application, to optimize the friction of carriage to container, by: a) scraps of paper and other additive that adds various amounts changes adhesion, and b) change carriage tape and be held tension force size between the container.These improve is not enough to obtain optimal adhesion between flexible carrier and container sometimes, especially big when container, weight and/or when having smooth outer surface.
Therefore need a kind of technology, the clamping ability that it can provide large-scale adjusting to optimize flexible carrier.
Summary of the invention
The present invention relates to a kind of flexible carrier that is used for container for drink, comprise a plurality of pan straddles, in the pan straddle of each container, have at least one high power treatment zone and at least one low energy processing region.Term " flexible carrier " as used herein, it is flexible and stretch to refer to carriage, around the neck, body or the recess that its pan straddle partly are installed in each container.Term " energy process " refers to the method that is selected from sided corona treatment, plasma treatment and combination thereof and carries out surface treatment.These energy process parts improve the surface energy by oxidation, ionization etc., improve the frictional force of processing region carriage to container thus.Term " low energy processing " is meant null value corona or plasma treatment as used herein, the perhaps corona of any energy level or plasma treatment, and it is lower than the corona or the plasma treatment that are received in the high power treatment zone.
High energy and low energy processing region can obtain by selectivity corona or the predetermined high power treatment zone of plasma treatment.Selectivity is handled and is made the zone experience surface oxidation and/or ionization, obtains the high frictional force of carriage to container.
The high power treatment zone is providing enough frictional force to move in the carrying of multi-container package and transportation to prevent container between the processing section of support and the container.A segment length of each pan straddle has only been extended in the high power treatment zone.The low energy processing region provides less friction can take out by the user is convenient with Bedpan, also made things convenient for carriage production and with the carriage machine applications in container.Especially, the low energy processing region provides lower friction surface, contacts with the jaw of applicator, and applicator is used for carriage is put on container.United States Patent (USP) 6,122,893 disclose an example of applicator, and this patent is introduced into as a reference.
Description of drawings
Fig. 1 is a flexible carrier of the present invention, has a high power treatment zone and two low energy processing regions.
Fig. 2 is another flexible carrier of the present invention, has a high power treatment zone and two low energy processing regions.
Fig. 3 is the flexible carrier similar to Fig. 2, has the high power treatment zone of expansion.
Fig. 4 is the flexible carrier similar to Fig. 2, has two high power treatment zones and three low energy processing regions.
Fig. 5 exemplary illustration corona treatment equipment is used for optionally handling the part of flexible carrier or precursor film.
Fig. 6 exemplary illustration is a kind of to be used to measure the equipment of carriage to container frictional force.
Fig. 7 represents flexible carrier of the present invention, and flexible carrier contacts with a plurality of containers.
Preferred forms
Referring to Fig. 1, flexible carrier 20 comprises flexible strip, and flexible strip has a plurality of pan straddles 22 that are formed on wherein, is formed for the main opening 25 of receiving vessel respectively.Flexible carrier 20 is made polyolefin described as follows preferably by plastic material.Flexible carrier 20 has the inner region 24 of a relative higher-energy processing and the outskirt 26 of two relatively low energy process.Outskirt 26 can be subjected to lacking at least 25% energy process than inner region 24, is preferably fewly at least 50%, is more preferably few at least 75% energy process, and preferably is not subjected to energy process.Energy process better is a sided corona treatment.Optionally, but the energy process plasma treatment.
The segment length that the inner region 24 of high power treatment extends flexible carrier 20.The segment length that the outskirt 26 that low energy is handled has also extended carriage.The enough wide part 23 that makes each container carrier 22 that the part 21 with high power treatment and frictional force be arranged and have low energy processing and frictional force of inner region 24 is used for directly contacting with container.Inner region 24 can be around about 10-90% of flexible carrier 20 width, about preferably 20-80.
The container that inserts in the main opening 25 can be bottle or the jar with difformity and diameter.Referring to Fig. 1, for example, each flexible carrier 20 is settled container by extending transversely pan straddle 22, laterally is meant relative direction as shown in arrow 30.Tray rack centers on the container setting when stretching, and allows withdrawal (recovery), is slidingly matched with the providing on every side of fin, groove or outer surface at container.The plane size and the parts thereof of flexible carrier 20 are according to final use and difference.Especially, final use includes but not limited to the beverage can and the bottle of various sizes and shape.
The side energy process flexible carrier 20 that expectation is not only contacting with container.Referring to Fig. 7, when being mounted with a large amount of container 70 on the flexible carrier 20, pan straddle 22 is crooked and curl, so that the inner surface of each support 22 64 is in the face of container 70, and the outer surface 66 of each support 22 is back to container 70.Preferably, only the flexible stent side around each support inner surface 64 is carried out energy process.When energy process only is applied on the surface of precursor film, have processing advantage, shear precursor film then and form flexible carrier 20.Use cutter sweep by a side, can avoid the excess friction between cutter sweep and the film the film that do not carry out energy process.But, carry out energy process in the both sides of flexible carrier 20, perhaps form precursor film on the carriage, all within the scope of the present invention.
The plastic membrane that is used to form flexible carrier 20 forms with polymer composition.Polymer composition comprises polyolefin, as polyethylene.Preferred polyolefm is a hp-ldpe.This polymer preferably has side chain, and prepares with traditional high pressure polymerisation process.Low density polyethylene polymer can prepare with Ziegler-Natta catalyst or single-point catalysis system.But low density polyethylene polymer homopolymers or ethene and one or more C
3To C
12The copolymer of α-paraffin comonomer and/or carbon monoxide.Preferred low density polyethylene polymer comprises the CO-copolymerization monomer, and it makes carriage be easy to wear out under the ultraviolet ray irradiation.
CO-copolymerization in low density polyethylene polymer changes according to the percentage composition of low density polyethylene polymer in polymer blend with the content of monomer.When existing, CO-copolymerization can account for about 0.1-20 weight % of low density polyethylene polymer with monomer, 0.5-10 weight % preferably approximately, more preferably about 1-4 weight %.
Low density polyethylene polymer should have about 0.910-0.950g/cm
3Density, 0.920-0.940g/cm preferably approximately
3, more preferably about 0.925-0.935g/cm
3In other words, term " low density polyethylene polymer " had both comprised and it has been generally acknowledged that the polyethylene polymer with intermediate density, comprised again and can think to have low-density polyethylene polymer usually.Measure down at 190 ℃ with ASTMD1238, low density polyethylene polymer should have the melt index of about 0.2-3.0g/10min., preferably approximately 0.4-0.7g/10min..
Low density polyethylene polymer can be formed whole in fact polymer composition, and perhaps available one or more additional mixed with polymers form.In an instantiation, polymer composition also comprises ethene-α olefin copolymer plastics of about 1-50 weight %, and this copolymer plastics has about 0.850-0.905g/cm
3Density, and prepare with single-point catalyst.Preferred these plastics have about 0.865-0.895g/cm
3Density, more preferably about 0.880-0.890g/cm
3α-paraffin comonomer can have 3-12 carbon atom, preferred 4-8 carbon atom.The amount of required comonomer is in order to reach the expection plastic density.Usually ethene-α olefin copolymer plastics comprise the comonomer of about 5-30 weight %, preferably about 10-25 weight %.Preferred polymer blend comprises the plastics of about 3-30 weight %, the preferably approximately plastics of 5-20 weight %.
Measure down at 190 ℃ with ASTMD1238, the ethene of single-point catalysis-α olefin copolymer plastics can have the melt index of about 0.3-10g/10min., 0.5-5g/10min. preferably approximately, more preferably about 0.8-1.3g/10min..Ethene-α olefin copolymer the plastics of preferred single-point catalysis have the trade name EXACT of Exxon-Mobil chemical company, the trade name AFFINITY and the ENGAGE of Dow chemical company.The example of suitable plastic is more preferably at US5, and 538,790, authorize Arvedson etc., and US5,789,029, authorize in the patent such as Ramsey openly, the disclosure of these patents is introduced into as a reference.Plastics have strengthened the tear resistance when carriage is scratched, the recovery after the elongation of breakpoint and the stretching, and this is measured with stress-strain testing in ASTMD882-91.
Unsettled ethene-the carbon monoxide multipolymer of carriage can be provided separately with the masterbatch mixture with high carbon monoxide content or the form of concentrate, perhaps partly or entirely carbon monoxide can with low density polyethylene (LDPE) and/or single-point catalyzed ethylene-α paraffin plastics copolymerization.No matter introduce or add how many carbon monoxide, polymer blend should have the carbon monoxide content of about 0.1-10 weight %, 0.5-5 weight % preferably approximately, more preferably about 1-2 weight %.Other polymer also can add in a word, keeping or to strengthen the tear resistance of recovery, elongation, tensile strength and flexible carrier substantially, and/or for carriage provides cold performance, anti-stress cracking performance, the transparency of raising and other desired characteristics.Polymer composition can be together by dry blend/or fusion is mixed.Typically, they are supplied with the extruder that is used to form the flexible carrier sheet respectively, and fusion is mixed in extruder.
Polymer blend also can comprise one or more lubricants.Lubricant is used to the frictional force of avoiding extra between flexible carrier 20 and the container, flexible carrier 20 and be used for around container and settle extra frictional force in frictional force extra between the equipment of carriage and the carriage manufacture process.Examples of suitable lubricants comprises the LCFA with about 18-20 carbon atom and dipole (amino-compound) end group.The dipole end group makes lubricant move towards the surface of flexible carrier 20.Examples of suitable lubricants comprises erucamide (have 21 carbon atoms, have the amino-compound end group) and oleamide (have 18 carbon atoms, have the amino-compound end group).The amount as many as 1000ppm of the lubricant that can add, preferably approximately 400-600ppm.
As mentioned above, flexible carrier 20 embodiment illustrated in fig. 1 comprises having inner region 24 and two outskirts 26 with low energy processing with high power treatment, is separated by boundary line 27 usually.Low energy treatment region 26 preferably is not subjected to energy process.Because the selectivity energy process, district 24 shows than the high carriage in district 26 container frictional force.The selectivity energy process is preferably the selectivity sided corona treatment.The selectivity sided corona treatment in district 24 causes each pan straddle 22 to have low surface oxidation part 21 and high surfaces oxidized portion 23 (being caused by sided corona treatment).Part 21 has lower carriage to container frictional force, and part 23 has higher carriage to container frictional force.
The selectivity sided corona treatment can obtain by transmission flexible carrier 20 or precursor film between electrode in corona treating station and the corrosion resistant plate.Electrode can have and the corresponding width of district's 24 width, therefore has only the district 24 of carriage to be handled.Flexible carrier 20 or film can longitudinally move and pass through corona treating station.The amount of the sided corona treatment that received by district 24 depends on the length of electrode, the speed that flexible carrier or film move, and the amount of the electromotive force that produces between electrode and the plate between electrode and plate.
Fig. 5 exemplary illustration corona treatment equipment 40.Two electrodes 44 and 46 series connection are provided with, and each can have about 6 inches long and about 2.5 inches wide (perpendicular to page).Alternatively, can connect is provided with the electrode of comparatively high amts, perhaps can use a long electrode.Steel plate 42 is positioned at the electrode below, forms air chamber 50 between electrode and plate.The film that flexible carrier 20 or flexible carrier 20 cuttings obtain passes through along arrow 48 between plate and electrode.If each electrode 44 and 46 is 6 inches long, flexible carrier 20 or film show 12 inches sided corona treatment length so.
In order to give the district 24 1 durable surface oxidations, As time goes on do not disappear, with high watt density treatment region 24 with sided corona treatment.The scope of watt density can be about 20-200watts/ft
2/ min, preferably approximately 30-150watts/ft
2/ min, more preferably about 40-100watts/ft
2/ min.Found that high watt density can make district 24 keep its surface oxidation to reach 1 year or more of a specified duration.The advantage of following of the container-carriage frictional force that improves can keep for a long time equally.
The working voltage treatment facility 40 as mentioned above, and the watt density of expectation can obtain by using the air gap between steel plate 42 and electrode 44 and 46 in the district 24 of the flexible carrier of 15 mil thick or film, and this air gap is the 50-200 Mill, preferred 60-150 Mill.The district 24 of flexible carrier or film passes through between plate and electrode with the speed up to about 250ft/min., causes the sided corona treatment holdup time at least about 0.30 second.Under these conditions, for obtaining 40-100watts/ft
2The expection watt density of/min, corona treatment equipment 40 should be used 1.5-1.8 kilowatt of electric power.The volume production of this power is given birth to an electromotive force, in gap 50 air switching with separated oxygen and hydrogen atom, the surface reaction of a part and flexible carrier or film.
Have been found that if having the stand-by period between when manufacturing is used to prepare the film of carriage tape and during sided corona treatment the selectivity sided corona treatment in district 24 is to flexible carrier friction improvement that offers the best to container.In other words, it is desirable to make any lubricating additive can come out in the surface to arrive the film surface before carrying out sided corona treatment.If after the film manufacturing, lubricant too early carries out sided corona treatment before arriving the surface, lubricant is transferred to the surface subsequently and can not influenced by sided corona treatment so.The big appointment in the period of waiting that film is fabricated onto sided corona treatment is three days or longer, preferably approximately seven days or longer, and preferably about ten days or longer.
Alternatively, the selectivity energy process in district 24 can be the selectivity plasma treatment.Plasma processing is known in the art, and has been used to handle the plasticity fabric in the past, in order to improve the permeability and the adhesiveness of fortifying fibre in the fabric.Plasma treatment also is used to improve the metallization of the film that applies by the metallising process.
In typical plasma treatment process, provide energy to make the process gas ionization by formation, thereby produce plasma with radio-frequency electromagnetic radiation, for example, process gas can be oxygen, nitrogen, argon gas, helium or its combination.Plasma comprises the metastable kind particle of electronics, ion and other high energy.The energy range of single plasma particle can be about 3-20 electron-volt.When the surface in the district 24 of these high energy particles and flexible carrier 20 contacted, this surface was by ionization or chemical reaction (especially oxidation reaction) and have energy.
At present, plasma treatment is more expensive than sided corona treatment.Think that thus sided corona treatment is most preferred methods for the selectivity energy process in the district 24 that obtains flexible carrier 20.Can utilize plasma treatment as the selectivity or the equivalent method that obtain effect same, make district 24 have the selectivity great friction coefficient.The plasma treatment technology can with linear velocity and the energy that is fit to, obtain the coefficient of friction of expectation by described those skilled in the art's optimization in district 24.
Are about 0.25-1.0 by sided corona treatment or plasma treatment at the coefficient of frictions of district's 24 generations, preferably about 0.30-0.50, and preferably about 0.35-0.45, coefficient of friction is measured with the bevel technique shown in Fig. 6.Referring to Fig. 6, flat support plate 52 1 ends 55 usefulness pivotal blocks 56 are arranged on the horizontal base plate 54.Plate 58 is placed near the opposite end of plate 52, and plate 58 usefulness are made with target container or with the coating identical materials (for example aluminium) on the container.The film 59 of flexible carrier material has at least 3 inches length and at least 1 inch width, is set near the plate 58 plate 52 opposite ends 57.The slide block 60 that has quality and be a low surface size of 567 grams and 3 inches * 1 inch is arranged on 3 square inches the film 59, and wherein the long limit of slide block 60 (3 inches) are parallel to the inclined-plane of gripper shoe 52.
Raise gradually the end 57 of gripper shoe 52, make to tilt to increase, and the angle theta that forms between gripper shoe 52 and the substrate 54 increases.When plate 52 enough tilts, the film 59 of flexible carrier material is owing to act on the gravity effect of slide block 60 and begin to slide along the surface of plate 58.In this point measurement angle theta, coefficientoffriction depends on following formula:
μ＝tanθ
The optionally specific embodiment of Fig. 2-4 expression flexible carrier 20 of the present invention is with the identical parts of Reference numeral statement identical in Fig. 1.Fig. 2 represents that flexible carrier 20 of the present invention has narrow container carrier 22 and main opening 25.Higher corona or plasma treatment inner region 24 are also narrow relatively, and only comprise a side of each rectangular vessel support 22.Low corona or plasma treatment outskirt 26 are around three sides of each rectangular vessel support 22.The flexible carrier 20 of Fig. 2 is not used as second opening of holding area.In addition, carriage 20 by in a lateral direction, the negative drawing container carrier installs container, and is as shown in arrow 30.
Fig. 3 represents the optionally specific embodiment of flexible carrier 20 of the present invention, except the inner region 24 of high corona or plasma treatment is wideer, and similar to shown in Fig. 2.In the flexible carrier 20 in Fig. 3, the inner region 24 of high corona or plasma treatment is around three sides of each rectangular vessel support 22.Low corona or plasma treatment outskirt 26 only center on a side of each rectangular vessel support 22.20 pairs of smooth and/or heavier containers of the flexible carrier of Fig. 3 are useful, benefit from the bigger total frictional force with flexible carrier.Low corona or plasma treatment district 26 and frictional force are enough greatly to avoid carriage 20 and to be used for carriage 20 stretchings and to be installed to excessive friction between the jaw of the equipment on the container.
Fig. 4 represents the optionally specific embodiment of flexible carrier 20 of the present invention, except inner region of inner region 24 that two high coronas or plasma treatment are arranged and low corona or plasma treatment and two outskirts 26, to Fig. 2 similar with shown in 3.High corona or plasma treatment inner region 24 are around two short sides of each rectangular vessel support 22.Low corona or plasma treatment outskirt 26 are around two long sides of each rectangular vessel support 22.
In each specific embodiment of Fig. 1-4, high power treatment district 24 can form by optionally using above-mentioned sided corona treatment process, perhaps optionally uses plasma treatment process.Low energy treatment region 26 can be exposed to less or non-corona or plasma treatment.
Embodiment
In the following example, the plate sample of sided corona treatment is of value to makes the flexible carrier shown in similar Fig. 3.Each flexible carrier plate is formed by ethene-carbon monoxide multipolymer, and the density of ethene-carbon monoxide multipolymer is 0.927g/cm
3, melt index is 0.5g/10min., and CO-copolymerization accounts for 0.75% of weight with content of monomer.Ethene-CO-copolymerization oleamide mix lubricant of monomer and 500ppm.
In embodiment 1, with five samples of non-sided corona treatment preparation with the linear velocity of 1.6KW power, 80ft/min. and 0.75 second holdup time, generation 96watts/ft
2The watt density of/min., come five samples of sided corona treatment with the corona treatment equipment shown in similar Fig. 5.Corona treatment equipment is made by Corona Designs company, and commodity are called POWERHOUSE.The bracket piece of sided corona treatment by sided corona treatment, makes lubricant fully migration before sided corona treatment after preparing several days.
The frictional force of estimation bracket piece is used flat beverage can material after about 1 year, and it has the finish face of " rough ", is made by the coated with aluminum that REXAM is all.With inclined abrasive coefficient detectors measure frictional force shown in Figure 6.Shown in table 1 (following), after 1 year, the bracket piece sample of sided corona treatment has the average friction coefficient that approximately doubles untreated samples.
Table 1 (embodiment 1)
In embodiment 2, five bracket piece samples of the usefulness sided corona treatment for preparing with five bracket piece samples of non-sided corona treatment preparation with same procedure described in the embodiment 1.In this case, the frictional force of estimation bracket piece is used identical tank material and technology after about 2 years.As shown in table 2, even after 2 years, the sample of sided corona treatment has approximately above the coefficient of friction that doubles untreated samples.
Table 2 (embodiment 2)
Embodiment 3 adopt available from Plasmatreat Corp, brand name is that the plasma treatment of FLUME is carried out.0.75 inch wide arrowband is by the selectivity plasma treatment.The total power of plasma treatment is approximately 0.25kw.Sample strip by with 20,40,60 and 80feet/min carry out selectivity and handle.The processing holdup time that produces was respectively 0.25 second, 0.125 second, 0.083 second and 0.0625 second.Under all speed, all carried out the selectivity plasma treatment, but under low velocity, handled very heavy.These samples are not further assessed.
Though embodiment of the present invention described here are preferred at present, are not breaking away under the spirit and scope of the present invention, can carry out various modification and improvement.Scope of the present invention is defined by the following claims, and all changes that fall into equivalents and scope all should be encompassed in wherein.
Claims (23)
1. flexible carrier that is used to carry a plurality of containers comprises:
Flexible strip; With
Be formed on a plurality of pan straddles in described, be formed for the main opening of receiving vessel respectively;
Each pan straddle has the high power treatment part and the low energy processing section of having extended pan straddle one segment length;
Wherein energy process is selected from sided corona treatment, plasma treatment and combination thereof, when partly being selected from sided corona treatment with the pan straddle of high power treatment, has 20watts/ft at least
2The watt density of/min.
2. the flexible carrier of claim 1 also comprises selectivity energy process zone, and this zone comprises the pan straddle part with high power treatment.
3. the flexible carrier of claim 2, wherein a segment length of carriage has been extended in selectivity energy process zone.
4. the flexible carrier of claim 2 also comprises one or more non-energy process zone, and described one or more non-energy process zone comprises the pan straddle part of handling with low energy.
5. the flexible carrier of claim 1, wherein the pan straddle with high power treatment partly has 40watts/ft at least
2The sided corona treatment of/min.
6. the flexible carrier of claim 1 comprises 2-12 pan straddle.
7. the flexible carrier of claim 1 also comprises one or more second openings as grip portions.
8. flexible carrier that is used to carry a plurality of containers comprises:
The flexible strip that forms by polyolefin composition;
Be formed on a plurality of supports in described, be formed for the main opening of receiving vessel respectively;
Each pan straddle has high power treatment part and low energy processing section; With
At least one selectivity energy process zone comprises the high power treatment part;
Wherein energy process is selected from sided corona treatment, plasma treatment and combination thereof, and selectivity energy process zone has 20watts/ft at least
2The sided corona treatment of/min.
9. the flexible carrier of claim 8, wherein selectivity sided corona treatment zone has 20-250watts/ft
2The sided corona treatment of/min.
10. the flexible carrier of claim 8, wherein selectivity sided corona treatment zone has 30-150watts/ft
2The sided corona treatment of/min.
11. the flexible carrier of claim 8, wherein selectivity sided corona treatment zone has 40-100watts/ft
2The sided corona treatment of/min.
12. the flexible carrier of claim 8, wherein energy process comprises plasma treatment, and selectivity energy process zone comprises selectivity plasma treatment zone.
13. the flexible carrier of claim 8, wherein polyolefin composition comprises the hp-ldpe polymer.
14. the flexible carrier of claim 13, wherein low density polyethylene polymer comprises an ethylene oxide carbon copolymer.
15. the flexible carrier of claim 13, wherein polyolefin composition also comprises the ethylene-alpha-olefin copolymer plastics of single-point catalysis.
16. the flexible carrier of claim 8, wherein polyolefin composition also comprises lubricating additive.
17. the flexible carrier of claim 16, wherein lubricating additive comprises erucyl amide.
18. the flexible carrier of claim 16, wherein lubricating additive comprises oleamide.
19. a flexible carrier that is used to carry a plurality of containers comprises:
The flexible strip that forms by polymer composition;
Be formed on a plurality of pan straddles in described, be formed for the main opening of receiving vessel respectively;
At least one selectivity energy process zone comprises the part of each pan straddle, and has 20watts/ft at least
2The sided corona treatment of/min; With
At least one non-energy process zone comprises the other part of each pan straddle.
20. the flexible carrier of claim 19, wherein selectivity sided corona treatment zone has 30watts/ft at least
2The sided corona treatment of/min.
21. the flexible carrier of claim 19, wherein selectivity sided corona treatment zone has 40watts/ft at least
2The sided corona treatment of/min.
22. the flexible carrier of claim 19 wherein selectivity energy process zone comprises selectivity plasma treatment zone.
23. the flexible carrier of claim 19, wherein polymer composition comprises ethene polymers and lubricating additive.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US52355803P | 2003-11-20 | 2003-11-20 | |
| US60/523,558 | 2003-11-20 | ||
| US10/953,133 | 2004-09-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1898079A CN1898079A (en) | 2007-01-17 |
| CN100558549C true CN100558549C (en) | 2009-11-11 |
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| CNB2004800380838A Expired - Fee Related CN100558549C (en) | 2003-11-20 | 2004-11-03 | Flexible carrier with regions of higher and lower energy treatment |
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| CN (1) | CN100558549C (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12031018B2 (en) * | 2020-01-13 | 2024-07-09 | Illinois Tool Works Inc. | Polyolefin elastomer in multi-packaging carrier |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4709808A (en) * | 1986-04-25 | 1987-12-01 | Owens-Illinois Plastic Products Inc. | Degradable polymer composition and articles prepared from same |
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- 2004-11-03 CN CNB2004800380838A patent/CN100558549C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4709808A (en) * | 1986-04-25 | 1987-12-01 | Owens-Illinois Plastic Products Inc. | Degradable polymer composition and articles prepared from same |
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