CN1198172A - Polystyrene film containing post-consumer recycled polystyrene - Google Patents
Polystyrene film containing post-consumer recycled polystyrene Download PDFInfo
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- CN1198172A CN1198172A CN96197290A CN96197290A CN1198172A CN 1198172 A CN1198172 A CN 1198172A CN 96197290 A CN96197290 A CN 96197290A CN 96197290 A CN96197290 A CN 96197290A CN 1198172 A CN1198172 A CN 1198172A
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- Prior art keywords
- polystyrene
- film
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- microns
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
- C08L25/04—Homopolymers or copolymers of styrene
- C08L25/06—Polystyrene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2325/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Derivatives of such polymers
- C08J2325/02—Homopolymers or copolymers of hydrocarbons
- C08J2325/04—Homopolymers or copolymers of styrene
- C08J2325/06—Polystyrene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Laminated Bodies (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Thin, substantially clear, oriented polystyrene films containing post-consumer recycled polystyrene and possessing physical properties substantially similar to that of polystyrene films not containing post-consumer recycled polystyrene. Films of the present invention may comprise up to 100 percent post-consumer recycled polystyrene and are useful as window envelope films.
Description
The present invention relates to contain oriented polystyrene film polystyrene, substantial transparent that reclaims again after the consumption.Specifically, the present invention relates to can be as window envelope this type of Polystyrene Film with film.
Window envelope is a kind of one or more different shapes that have, and is generally the envelope of orthogonal window, and the shape of window should be suitable for observing the various information in the limited range on the letter paper that are printed in the envelope; Be generally name and address.The window of envelope or a plurality of window all are to use by the substantially transparent film, are generally window that Polystyrene Film makes and paste sealing or sealing.The method of pasting window is: window envelope is pasted with the window that film is cut into desired length and width, then it is attached on the window envelope.
Window envelope mainly is the extruded polystyrene film with film usually, and for the ornamental mist degree of necessity of increasing film or the translucency of film, the optional polymkeric substance that contains low ratio modified rubber is as high-impact polystyrene (" HIPS ").Window envelope can be made with twin shaft or uniaxial orientation method with film.Biaxially oriented film is because of having good horizontal cutability, so be preferred.
In view of the protection to environment, it is more and more important that minimizing need be buried the volume of filling out plastics.To bury the volume of filling out plastics in order reducing, to have done many work aspect all types of plastic goods that after utilizing consumption, reclaim again.Yet these work prove: the polystyrene that will reclaim again after will consuming make substantially transparent, orientation thin polystyrene film is very difficult.Therefore, industry member still has makes polystyrene film substantial transparent, orientation with the polystyrene that reclaims again after the consumption, as the requirement of window envelope with film.
The invention provides the thin polystyrene film that contains reclaim again after the consumption polystyrene, substantially transparent, orientation, the processing physicals of this film with do not contain consumption after the Polystyrene Film of the polystyrene of recovery is identical again.Film of the present invention can contain the polystyrene that reclaims again up to after 100% consumption.
The thickness of film of the present invention is generally at least about 0.25 mil (6.35 microns), is preferably at least about 0.75 mil (19.05 microns).Film thickness of the present invention is no more than about 7 mils (177.8 microns) usually, preferably is no more than about 4 mils (101.6 microns), more preferably no more than about 2.5 mils (63.5 microns).
Film of the present invention or uniaxial orientation or diaxial orientation.Preferred film of the present invention is a diaxial orientation.
Film of the present invention mainly is made up of extruded polystyrene usually.This film can contain a small amount of antiplaque agent and acid scavenger, as proposing in United States Patent (USP) 5009953 and 5190814.This film also can contain and increases mist agent (hazing agent) on a small quantity, for example adds as high impact polystyrene (HIPS) making it have the ornamental mist degree or the translucency of necessity to film.As the preferred HIPS that increases the mist agent is STYRON 404 (buying from The Dow Chemical Company).
The extruded polystyrene that is used to make film of the present invention can contain the polystyrene that reclaims again after the consumption of nearly 100% (weight).The polystyrene that reclaims again after this consumption meet ASTM D5033-90 to consumption after the regulation of salvage material again.Be used for extruded polystyrene of the present invention and also can contain general purpose polystyrene.Concrete general purpose polystyrene is not a key.Yet a kind of preferred general purpose polystyrene is STYRON 665 (buying from The DowChemical Company).Be used for extruded polystyrene of the present invention and also can contain our factory's particle from film of the present invention.Usually, extruded polystyrene is the blends of polystyrene that reclaims again after a kind of general purpose polystyrene, film particle of the present invention and the consumption.
The polystyrene that is used for reclaiming again after the consumption of the present invention must be to be substantially free of such as particulates such as paper fiber, string rubber and cross linked gels, to prevent to assemble when the thin film alignment or form eyelet.The Soxhlet extraction technique can be used to detect the particulate loading in the polystyrene sample that reclaims again after the various consumption.This Soxhlet extraction technique is to be solvent with toluene, through 10 microns filtering methods of filter.The weight of the polystyrene sample that reclaims again after each consumption of elder generation's weighing when adopting the Soxhlet extracting is dissolved in it in toluene then.The dissolved sample is weighed through any undissolved solia particle that 10 microns filters filter and will reclaim.Filtering particulate weight can be got the weight percentage of particulate in the initial sample divided by the weight of initial sample.Usually, fraction of particle in the polystyrene that is used for reclaiming again after the present invention's consumption should be lower than about 0.1 (weight) % by Soxhlet extraction technique mensuration.Preferably, but do not contain the particulate (Soxhlet extraction process mensuration) of detection limit in the polystyrene that reclaims again after the consumption.
The polystyrene that reclaims again after the consumption also must be to be substantially free of other type polymer, as polypropylene and polyethylene impurity, to avoid taking place the melt uncompatibility.The melt uncompatibility can make film surface form assorted spot.Preferably, when the polystyrene that reclaims again after the method that adopts ASTM D-3418 to be proposed is to consumption carried out the analysis of digital scanning calorimetry, its second-order transition temperature should be indicated at about 100 ℃.
For the optical clarity that the film that makes is produced, the polystyrene that reclaims again after the consumption should be transparent basically.The polystyrene that reclaims again after the consumption must not have ironmould, food oils and other pigment impurity basically.The thin slice that is pressed into thickness about 0.1 inch (0.254 centimetre) by the polystyrene that reclaims again after the consumption on 400 (204.4 ℃) flat press should have and is lower than 20% mist degree (press ASTM D-1003 mensuration).
The polystyrene that is preferred for reclaiming again after the consumption of the present invention is the polystyrene of retrieving from transparent injection moulding or thermoforming polystyrene parts.Preferred recovery polystyrene material is to derive from pocket disc jewel box, the transparent inserts of pocket disc jewel box, cassette for recording tape, sweet cake plate or berry box.
Find not wish impurity-lime carbonate of existing sometimes in the polystyrene that after consumption, reclaims again.But containing the polystyrene that reclaims again after the consumption of a little lime carbonate can be preferably with in the present invention.Also strictly determine though be used for the permission upper limit of the polystyrene calcium carbonate content that reclaims again after the consumption of the present invention, successfully will contain the polystyrene that reclaims again after the consumption up to the lime carbonate of 575ppm and mix in the film of the present invention.Admissible lime carbonate consumption can be decided with polystyrene per-cent that reclaims again after the consumption of being adopted and the concrete end-use of making film.This consumption be do not need through the experiment just confirmable.
Can make film of the present invention by any technology known in the art.More particularly, can make thin film alignment of the present invention by any technology as known in the art.Yet, when the resin treatment of the polystyrene that will reclaim again after will containing consumption becomes film of the present invention, not contain the polystyrene resin that reclaims again after the consumption with processing in the same way and compare identical orientation degree is arranged in order to reach, be necessary the melt temperature of resin is done a little adjustment.The result of this adjustment normally makes melt temperature be reduced to many about 10 ℃.For keeping the designated orientations degree, the required adjustment amount of melt temperature can be decided with the source and the consumption of the polystyrene that reclaims again after the consumption.Yet, this adjustment amount be do not need through the experiment just confirmable.
Verified: the polystyrene that reclaims again after the consumption in many sources is to be difficult to maybe can not be processed into thin alignment films.For example, the resin that reclaims from the containers for food use of foam cup and foam thin plate system (SP-012 that buys from Dart Container Corporation) contains the clearly visible big gel of many naked eyes.In processing during SP-012, in extruding machine, can observe material significantly and emerge in large numbers and resemble, obviously, this be since resin granular material not of uniform size cause caused.
Another kind of test is PC-1000 (available from National Polystyrene Recycling Company) with the source of the polystyrene that reclaims again after consuming.PC-1000 is made by food product containers and vessel (dish and dish).The Soxhlet extraction test shows that PC-1000 contains about 1.7 (weight) % particle.
Become the biaxially oriented film of 0.2 mil (130.48 microns) to attempt to the resin treatment that contains 65.75 (weight) % general purpose polystyrene (STYRON-665), 25 (weight) %PC-1000,8 (weight) % high-impact polystyrene (STYRON404) and 1.25 (weight) %CN-201 (available from Polycom Huntsman).Yet this face (film web) just ruptured every 20-45 minute, consequently was difficult to collection and materialsed.CN-201 is the pre-compounded blend of 20 (weight) % tetrafluoroethylene, 1 (weight) % calcium stearate and 79 (weight) %STYRON 665.
Produced the source of the polystyrene that reclaims again after the another kind of consumption: PC-1000D by National Polystyrene Recycling Company.PC-1000D is the food product containers waste that reclaims from Los Angeles school systems.The source of the polystyrene that reclaims again after this a kind of consumption is owing to tighter source control is arranged, so foreign matter content is lower than PC-1000.Show after analyzing many PC-1000D, through the extractive insoluble impurity of Soxhlet between 0.1% and 1.6%.
Become biaxially oriented film to attempt to the above-mentioned resin manufacture that substitutes with 25 (weight) %PC-1000D behind 25 (weight) %PC-1000, yet this face approximately just ruptured every 30 minutes.This is clearly explanation just, still has noticeable processing problems even foreign matter content is low to 0.1% (measuring with the Soxhlet extraction process).
Embodiment
Prepare 5 biaxially oriented films respectively: 1 control sample, 2 duplicates, 2 samples of the present invention.The thickness of every kind of film is 1.2 mils (30.48 microns).
The contrast film contains 95 (weight) % general purpose polystyrene (STYRON 665) and 5 (weight) % high impact polystyrene (STYRON 404).Other 4 kinds of films all are to replace general purpose polystyrene with the polystyrene that reclaims again after the consumption, make these 4 kinds of films all contain the polystyrene that reclaims again after 25 (weight) % consumption.
Duplicate #1 and #2 contain 25 (weight) %PC-1000 and PC-1000D respectively.Embodiment #1 contains 25 (weight) %PC-4000 (available from NationalPolystyrene Recycling Company).Embodiment #2 contains 25 (weight) %PCR-100 (available from Plastic Recycling, Inc.)
The polystyrene PC-1000 that reclaims again after the consumption and the source of PC-1000D are discussed.The polystyrene PC-4000 that reclaims again after the consumption is derived from the pocket disc jewel box of recovery and the sweet cake dish of polystyrene of thermoforming.The polystyrene PCR-100 that reclaims again after the consumption is derived from the pocket disk jewel box of recovery.Granule content among PC-4000 and the PCR-100 is measured with the Soxhlet extraction process, and is too low so that can not detect because of its content.
5 sample film are carried out the mist degree test with ASTM D-1003 method; With the ASTMD-2457 method carry out vertically, the test of outside surface 60 degree gloss; With the vertical ultimate elongation test of ASTM D-882 method; And carry out vertical elongation limit with ASTM D-882 method and test.These tests the results are shown in table 1.
Table 1
| Contrast | ????25％ PC-1000 | ????25％ PC-1000D | ????25％ ?PC-4000 | ????25％ ?PCR-100 | |
| Mist degree (%) | 4.56 | ????24.3 | ????9.22 | ????4.41 | ????3.30 |
| 60 degree gloss (%) | 127 | ????84 | ????129 | ????139 | |
| Ultimate elongation (psi) | 13082 | ????9146 | ????10070 | ????12894 | ????12152 |
| Elongation limit (%) | 45 | ????6.2 | ????4.4 | ????46 | ????51 |
Film of the present invention is successfully as the window envelope film.A kind of window envelope contains 49 (weight) %STYRON 665,35 (weight) %PCR-100,5 (weight) %STYRON 404 and 1 (weight) %CN-201 with film.The thickness of this film is 1.2 mils (30.48 microns).This film is upward puted up sheet and successfully carried out the test of 4000 feet of pasters (1219.2 meters) under 7 inches (17.78 centimetres) mercury column vacuum at F.L.Smithe High Speed Patcher (high speed placement system) with per minute 800.
Another kind contains 35 (weight) %PCR-100, film, 15 (weight) %STYRON 404,0.8 (weight) the % calcium stearate of 34 (weight) %STYRON 665,15 (weight) % our factory recovery and the window envelope of 0.2 (weight) % tetrafluoroethylene (MP1100 is available from DuPont) also successfully to be tested with film.The thickness of this film is 1.2 mils (30.48 microns).
Claims (5)
1. the main film of forming by polystyrene, wherein film thickness is less than about 7 mils (177.8 microns), wherein film or uniaxial orientation or diaxial orientation, and wherein said polystyrene comprises the polystyrene that reclaims again as after the consumption of ASTM 5033-90 regulation.
2. according to the film of claim 1, wherein the polystyrene that reclaims again after the consumption comprises the pocket disk jewel box of recovery or the sweet cake dish of polystyrene of recovery.
3. according to the film of claim 1, wherein the thickness of film is less than about 4 mils (101.6 microns).
4. according to the film of claim 1, wherein film thickness is less than about 2.5 mils (63.5 microns).
5. according to the film of claim 1, wherein film thickness is about 1.2 mils (30.48 microns).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US314795P | 1995-09-01 | 1995-09-01 | |
| US60/003,147 | 1995-09-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1198172A true CN1198172A (en) | 1998-11-04 |
Family
ID=21704404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96197290A Pending CN1198172A (en) | 1995-09-01 | 1996-08-30 | Polystyrene film containing post-consumer recycled polystyrene |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0863936A1 (en) |
| JP (1) | JP2000501122A (en) |
| KR (1) | KR19990044207A (en) |
| CN (1) | CN1198172A (en) |
| AU (1) | AU703220B2 (en) |
| CA (1) | CA2230025A1 (en) |
| IL (1) | IL123361A0 (en) |
| WO (1) | WO1997009372A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111844829A (en) * | 2020-07-28 | 2020-10-30 | 昆山红苹果塑胶新材料有限公司 | Method for manufacturing black shading film |
| WO2022247061A1 (en) * | 2021-05-28 | 2022-12-01 | 宁波讯强电子科技有限公司 | Recycled ps plastic film, acousto-magnetic anti-theft label, acousto-magnetic anti-theft label housing, and preparation methods therefor |
| CN118906591A (en) * | 2021-05-28 | 2024-11-08 | 宁波讯强电子科技有限公司 | Regenerated PS plastic film, sound magnetic anti-theft label, label shell and preparation method thereof |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004509202A (en) * | 2000-09-15 | 2004-03-25 | ダウ グローバル テクノロジーズ インコーポレイティド | Styrene polymer composition with improved clarity |
| US6579946B2 (en) * | 2001-02-02 | 2003-06-17 | Dow Global Technologies Inc. | Low-gloss biaxially oriented films comprising vinyl aromatic polymers and substantially non-spherical rubber particles |
| DE102006056780A1 (en) * | 2006-12-01 | 2008-06-05 | Schleicher, Franz, Dr. | Interlayer film for separating slices of food, e.g. sausage or cheese in the food processing industry or food trade, contains polystyrene as the main component and is preferably made from two different granulates |
| WO2011082802A1 (en) | 2009-12-17 | 2011-07-14 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Method for treating waste containing plastic |
| EP2354168A1 (en) | 2010-02-03 | 2011-08-10 | Total Petrochemicals Research Feluy | Styrene based compositions made with a minor part of metal free recycled styrene polymer |
| US8445552B2 (en) | 2010-12-01 | 2013-05-21 | The Diller Corporation | Solid surface sheets containing post-consumer recycled materials and methods of making same |
| DE202015009891U1 (en) | 2014-10-03 | 2021-02-03 | Polystyvert Inc. | Recycled polystyrene obtained from operations to recycle polystyrene waste |
| CN117304566A (en) | 2017-11-20 | 2023-12-29 | 波利斯太沃特公司 | Methods for recycling polystyrene waste |
| PL3870640T3 (en) * | 2018-10-26 | 2025-03-03 | Polystyvert Inc. | Processes for recycling polystyrene waste and/or polystyrene copolymer waste |
| MX2024005660A (en) | 2021-11-11 | 2024-07-19 | Polystyvert Inc | Methods of recycling polystyrene material comprising brominated contaminants. |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1329924C (en) * | 1988-07-18 | 1994-05-31 | Stephen I. Foster | Non-dusting window envelope film utilizing a particulate anti-flecking agent |
| DE4439458A1 (en) * | 1994-11-04 | 1996-05-09 | Basf Ag | Expandable styrene polymers containing recyclate |
-
1996
- 1996-08-30 IL IL12336196A patent/IL123361A0/en unknown
- 1996-08-30 WO PCT/US1996/013848 patent/WO1997009372A1/en not_active Ceased
- 1996-08-30 KR KR1019980701443A patent/KR19990044207A/en not_active Withdrawn
- 1996-08-30 EP EP96929095A patent/EP0863936A1/en not_active Withdrawn
- 1996-08-30 AU AU68629/96A patent/AU703220B2/en not_active Ceased
- 1996-08-30 CN CN96197290A patent/CN1198172A/en active Pending
- 1996-08-30 CA CA002230025A patent/CA2230025A1/en not_active Abandoned
- 1996-08-30 JP JP9511269A patent/JP2000501122A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111844829A (en) * | 2020-07-28 | 2020-10-30 | 昆山红苹果塑胶新材料有限公司 | Method for manufacturing black shading film |
| WO2022247061A1 (en) * | 2021-05-28 | 2022-12-01 | 宁波讯强电子科技有限公司 | Recycled ps plastic film, acousto-magnetic anti-theft label, acousto-magnetic anti-theft label housing, and preparation methods therefor |
| CN118906591A (en) * | 2021-05-28 | 2024-11-08 | 宁波讯强电子科技有限公司 | Regenerated PS plastic film, sound magnetic anti-theft label, label shell and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000501122A (en) | 2000-02-02 |
| AU6862996A (en) | 1997-03-27 |
| IL123361A0 (en) | 1998-09-24 |
| WO1997009372A1 (en) | 1997-03-13 |
| EP0863936A1 (en) | 1998-09-16 |
| AU703220B2 (en) | 1999-03-18 |
| KR19990044207A (en) | 1999-06-25 |
| CA2230025A1 (en) | 1997-03-13 |
| MX9801632A (en) | 1998-08-30 |
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