WO1994019187A1 - Feuilles de polypropylene et procede de fabrication - Google Patents

Feuilles de polypropylene et procede de fabrication Download PDF

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Publication number
WO1994019187A1
WO1994019187A1 PCT/US1992/011137 US9211137W WO9419187A1 WO 1994019187 A1 WO1994019187 A1 WO 1994019187A1 US 9211137 W US9211137 W US 9211137W WO 9419187 A1 WO9419187 A1 WO 9419187A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
process according
blend
molecular weight
high molecular
Prior art date
Application number
PCT/US1992/011137
Other languages
English (en)
Inventor
Yao-Ching Liu
Ray Edwards
Original Assignee
Eastman Chemical Company
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
Priority to US07/815,726 priority Critical patent/US5248364A/en
Priority claimed from US07/815,726 external-priority patent/US5248364A/en
Application filed by Eastman Chemical Company filed Critical Eastman Chemical Company
Priority to EP93901890A priority patent/EP0683726A1/fr
Priority to PCT/US1992/011137 priority patent/WO1994019187A1/fr
Priority to JP6502748A priority patent/JPH08506532A/ja
Priority to CA002129970A priority patent/CA2129970A1/fr
Publication of WO1994019187A1 publication Critical patent/WO1994019187A1/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F255/00—Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00
    • C08F255/02—Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00 on to polymers of olefins having two or three carbon atoms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0013—Extrusion moulding in several steps, i.e. components merging outside the die
    • B29C48/0014—Extrusion moulding in several steps, i.e. components merging outside the die producing flat articles having components brought in contact outside the extrusion die
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
    • B29C48/914—Cooling of flat articles, e.g. using specially adapted supporting means cooling drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
    • B29C48/9175—Cooling of flat articles, e.g. using specially adapted supporting means by interposing a fluid layer between the supporting means and the flat article
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B29K2023/0608—PE, i.e. polyethylene characterised by its density
    • B29K2023/0633—LDPE, i.e. low density polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/10—Polymers of propylene
    • B29K2023/12—PP, i.e. polypropylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0065—Permeability to gases
    • B29K2995/0067—Permeability to gases non-permeable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2009/00—Layered products

Definitions

  • the present invention relates to laminates and the process for their production.
  • the laminates have a layer of polypropylene containing material bonded to a substrate such as a non—polar substrate. More particularly, the present invention relates to a method of producing laminates by extrusion coating a layer, a blend of a maleated polypropylene and a low density polyethylene, onto a substrate layer primed with an i ine primer.
  • Multi—layered compositions such as permanently bonded laminates are very useful. These multi—layered laminates take advantage of the good properties of each of the individual layers of the laminate. Laminates having good strength, good solvent resistance, good grease resistance and low gas permeability are very desirable and could be formed from a strong layer, a layer that is solvent or grease resistant and a layer that has low gas permeability giving the resulting laminate the desirable overall properties. These laminates have uses in packaging applications such as the packaging of grease covered metallic parts.
  • a chlorinated polypropylene primer Whereas polymers of propylene cannot be bonded to these non—porous substrates without the use of a very unique primer, a chlorinated polypropylene primer.
  • the polypropylene layer in a laminate adds the advantages of excellent grease and solvent—resistance to the laminates, however, producing these polypropylene laminates is expensive due to the cost of the chlorinated polypropylene primer. Additionally, chlorine containing materials are undesirable due to the tendency of forming hydrochloric acid which is very corrosive.
  • the process of the present invention for producing an inseparably bonded polypropylene melt extrusion laminate comprises extruding onto an imine primed substrate a layer of a maleated high molecular weight polypropylene/low density polyethylene blend.
  • the present invention further comprises an article of manufacture that is a destructively bonded melt extrusion laminate comprised of
  • Fig. l represents an extrusion lamination process in which the maleated high molecular weight polypropylene/low density polyethylene blend is extruded between a layer of imine primed substrate and polyolefin film.
  • Fig. 2 represents the extrusion laminated articles illustrating the benefit of the present invention in which a maleated high molecular weight polypropylene/ low density polyethylene blend is destructively bonded to imine primed substrates.
  • maleated high molecular weight polypropylene compositions can be inseparably or destructively—bonded to non—porous substrates primed with imine primer.
  • laminates containing a layer of polypropylene on a non—porous substrate were simply not known without the use of a chlorinated polypropylene primer.
  • the laminated film of the present invention has excellent toughness as well as excellent barrier properties against grease, oil, and corrosion, and can be used in various applications such as wrap applications for metal parts (machine parts) .
  • the process of the present invention entails extruding under extrusion coating conditions, a layer that is a blend of maleated high molecular weight polypropylene/low density polyethylene onto a substrate that is primed with an imine primer.
  • the substrate can be any number of substrates, porous, and non—porous, but is preferably selected from non—porous non—reactive substrates.
  • non—reactive it is meant that the unprimed substrate generally does not accept the maleated high molecular weight polypropylene/ low density polyethylene blend to form a destructive bond, either chemically, by polar interaction, or mechanically.
  • non—porous it is meant that a substrate does not have pores sufficient to significantly increase the bonding of the coating to the unprimed substrate.
  • porous substrates can be used, non—porous substrates are preferred since adhesion to these substrates is most improved by the present invention.
  • the non—porous substrates are preferably selected from polymers of polycarbonate, polyesters, nylons, and metallic foils such as aluminum foil, with nylons and metallic foils being more preferred.
  • the imine primer used to coat the substrate in the present invention is preferably a polyethyleneimine primer such as Mica A—131—X manufactured by Mica Corporation, USA. It is expected that other polyethyleneimines will function well as primer in this application but Mica A—131—X is the most preferred polyethylene imine primer.
  • the substrate can be primed with the imine primer by any conventional method of priming such as those methods used for priming substrates with water—based primers. An example of a suitable method of priming the substrate is by spraying.
  • the substrate is preferably primed well in advance of being subjected to the extrusion coating or extrusion lamination process.
  • the substrate is preferably coated with a solution containing the imine primer followed by drying the substrate. This solution is preferably an aqueous solution containing very little volatile organics. This solution preferably contains between 3—5 volume % polyethyleneimine and 95—97 volume % water.
  • extrusion lamination process of the present invention is illustrated in Figure l.
  • this extrusion coating process 1 is the extruded blend layer of maleated high molecular weight polypropylene/ low density polyethylene blend
  • 2 is the imine coated non—porous substrate such as nylon film that is laminated to one side of the maleated high molecular weight polypropylene/low density polyethylene blend layer
  • 3 is a third layer of an olefin polymer such as a polypropylene or polyethylene based polymer film or sheet that is laminated with blend layer 1 to non-porous substrate 2 resulting in the laminated film 4.
  • the extrusion die that extrudes the layer of maleated high molecular weight polypropylene/low density polyethylene blend is at 5.
  • the large chilled roll that cools the laminated film is at 6 whereas 7, 8, and 9 are rolls that aid in pressing and advancing the film.
  • the extrusion coating process of the present invention is preferably conducted at a temperature between 425°F (218°C) and 525°F (274°C) at a line speed of 200 feet per minute (1016 m/s) or faster, and at a throughput rate of 5 to 10 pounds per hour (6.3 to 12.6 kg/s) per inch (2.54 cm) of die width with 10 pounds per hour (12.6 kg/s) per inch (2.54 cm) being most preferred.
  • maleated high molecular weight polypropylene would improve the grease resistance of a film, and would improve the adhesion compared to a corresponding amount of non—maleated polypropylene.
  • the maleated high molecular weight polypropylene/low density polyethylene blend preferably contains at least 10 weight % maleated high molecular weight polypropylene more preferably at least 30 weight % with at least 50 weight % being most preferred.
  • the lower amounts of polypropylene in the blend would impart less of the grease and solvent resistant properties to the layer, and the adhesion of these low polypropylene blends is not as dramatically improved by the present invention. Therefore the higher amounts of poly ⁇ propylene are more preferred.
  • the maleated high molecular weight polypropylene/ low density polyethylene blend requires some amount of low density polyethylene to be able to be extrusion coated and preferably contains at least 5 weight % low density polyethylene and no more than 95 weight % maleated high molecular weight polypropylene. At least 5% low density polyethylene imparts adequate extrusion coating capabilities to the blend, however 10—20 weight % low density polyethylene provides better extrusion coating properties. The overall balance of adequate extrusion coating properties and grease resistance are at a most preferred concentration of 90 weight % maleated high molecular weight polypropylene and 10 weight % low density polyethylene.
  • the maleated high molecular weight polypropylene used in the blend of the present invention is generally prepared by taking maleated high molecular weight polypropylene that has been prepared by a conventional process as illustrated in U.S. Patent No. 3,862,266 and 3,862,265.
  • the maleated high molecular weight polypropylene of the blend is preferably maleated to 0.1 — 2 weight % maleic anhydride, more preferably 0.2 — 1 weight % with 0.5 weight % maleic anhydride being most preferred.
  • the adhesion of the blend is improved by incorporating any amount of maleic anhydride into the high molecular weight polypropylene, at concentrations less than 0.1 weight % maleic anhydride, the high molecular weight polypropylene does not have an adequate acid number to render the resulting blend destructively bondable to imine prime substrates, whereas amounts much over 2 weight % do not provide any substantial increase in bonding.
  • the maleated high molecular weight polypropylene preferably has an acid number between 1 and 8, more preferably between 2 and 6 with an acid number of 4 being most preferred.
  • the high molecular weight polypropylene can be a homopolymer or copolymer containing up to 5 weight % of other monomers without interfering with the overall properties of the polypropylene.
  • the high molecular weight polypropylene preferably has a flow rate between 1 and 20 decigrams per minute at 230°C more preferably between 2 and 10 decigrams per minute at 230°C with flow rates between 2 and 5 being most preferred.
  • a flow rate above 20 will produce maleated high molecular weight polypropylenes with flow rates above 70 which means that these maleated high molecular weight polypropylenes are too fluid and do not have a desirable melt strength.
  • the maleated high molecular weight polypropylene preferably has a flow rate between 40 and 70 decigrams/rain at 230°C preferably between 50 and 60 decigrams/min with a flow rate of 55 decigrams/min being most preferred.
  • the low density polyethylene used in the blend of the present invention preferably has a poly—dispersity index between 3 and 15.
  • the poly—dispersity index is the ratio of the weight average molecular weight to the number average molecular weight.
  • This poly—dispersity index for the low density polyethylene is more preferably between 5 and 10 with 7 being most preferred.
  • a low density polyethylene with a poly-dispersity index below 3 exhibits excessive edge weaving during extrusion coating/lamination, whereas a low density polyethylene with a poly—dispersity index above 15 exhibits extrudate tear—off during extrusion coating/lamination.
  • the low density polyethylene also preferably has a melt index between 1 and 10 decigrams/min at 190°C, more preferably between 3 and 7 decigrams with a melt index of 3.5 decigram being most preferred.
  • a low density polyethylene with a melt index below 1 does not blend well with maleated polypropylenes due to a viscosity mismatch, whereas a low density polyethylene with a melt index above 10 is less preferred since it does not provide sufficient melt strength needed for this process.
  • the maleated high molecular weight polypropylene/ low density polyethylene blend of the present invention can have other conventional additives incorporated into the blend by conventional methods.
  • Suitable additives include, for example, Irganox 1010 antioxidant.
  • the blend of the present invention can be blended by any conventional process such as tumble blending.
  • Corrosion inhibitors are presently added to some polyethylenes at 0.5% by weight to be made into film for use in laminations for protecting metal parts from oxidation and corrosion.
  • Examples of corrosion- resistant polyethylene films are marketed by Northern Instruments Corporation, Lino Lakes, Minnesota, U.S.A., as "Zerust" Films.
  • Such films can be used in combination with a film of the maleated high molecular weight polypropylene/low density polyethylene blend of this invention to form laminated structures with the two films destructively bonded together.
  • Corrosion inhibitors at 0.5% by weight could also be added to polypropylene films and laminated with a film of the blend of the present invention to form a destructively bonded laminate of the two films.
  • Corrosion inhibitors at 0.5% by weight can also be added directly to the maleated high molecular weight polypropylene/low density polyethylene blend of this invention for direct extrusion coating onto a substrate or for extrusion lamination of a multi—layer structure.
  • the destructively bonded melt extrusion laminate produced according to the present invention comprises:
  • the article manufactured is preferably a co- extrusion that contains a third layer comprised of an olefin polymer that is coated on said first layer, said first layer being between said second layer, and said third layer.
  • the layer of maleated high molecular weight polypropylene/low density polyethylene blend that is extruded in contact with the imine primed non—reactive substrate preferably has a thickness between 0.2 and 30 mils (0.005 — 0.76 mm) more preferably between 0.5 and 5 mils (0.0127 - 0.127 mm) with a thickness of 1 — 2 mils (0.025 — 0.05 mm) being most preferred. 1—2 mils is most preferred because it offers adequate grease proofness to a laminated structure.
  • the following examples are meant to illustrate the present invention but are not intended to limit the reasonable scope thereof. EXAMPLES The following procedures were used to evaluate the examples:
  • the extruded product was pelletized and analyzed to have a melt flow rate of 50 dg per minute at 230°C and an acid number of 5.0 mg KOH per gram.
  • Example 1 The maleated polypropylene from Example 1 (89.85 pbw) , 10 pbw Tenite 1550p polyethylene from ECC having a melt index of 3.5 dg per minute, and 0.15 pbw antioxidant were tumble—blended and fed into a twin- screw extruder and pelletized under the same operating conditions as in Example 1. This extruded product was then extruded between a 0.6 mil unprimed nylon film (BCF "Curphane" from Be is Corporation, U.S.A.) and a 2 mil polyethylene film containing 0.5% wt. Zerust corrosion inhibitor as shown in Figure 1 and illustrated in Run 1, Figure 2.
  • Example 2 The blend from Example 2 was extruded onto a polyethyleneimine primed metal foil substrate as shown in Run 3, Figure 3. A good destructive bond was formed between the extruded product and the primed foil.
  • Example 5 This example was conducted according to Example 4 except that a maleated polypropylene was not included in the extruded blend.
  • the extruded blend (Tenite 4G7DP) contained 80 wt. % Tenite 427S polypropylene and 20 wt. % Tenite 1550p polyethylene and is illustrated in Run 4, Figure 2. No destructive bond was formed between the extruded layer of the nonmaleated polypropylene/low density polyethylene blend and the foil even with the presence of the polyethylene imine primer on the foil substrate.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)

Abstract

Feuille multi-couche contenant une couche de polypropylène fixée de façon permanente sur un substrat portant une couche de fond à l'imine. Cette feuille contient une couche constituée d'un mélange de polypropylène maléaté de poids moléculaire élevé et de polyéthylène de basse densité et une deuxième couche constituée d'un substrat, par exemple du nylon, portant une couche de fond contenant une imine, par exemple du polyéthylèneimine.
PCT/US1992/011137 1989-07-06 1992-02-18 Feuilles de polypropylene et procede de fabrication WO1994019187A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US07/815,726 US5248364A (en) 1991-12-30 1991-12-30 Polypropylene laminates and process for the production thereof
EP93901890A EP0683726A1 (fr) 1991-12-30 1992-02-18 Feuilles de polypropylene et procede de fabrication
PCT/US1992/011137 WO1994019187A1 (fr) 1989-07-06 1992-02-18 Feuilles de polypropylene et procede de fabrication
JP6502748A JPH08506532A (ja) 1991-12-30 1993-02-18 ポリプロピレン積層物及びその製造方法
CA002129970A CA2129970A1 (fr) 1991-12-30 1993-02-18 Stratifies de polypropylene et procede pour leur production

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US37647189A 1989-07-06 1989-07-06
US07/815,726 US5248364A (en) 1991-12-30 1991-12-30 Polypropylene laminates and process for the production thereof
PCT/US1992/011137 WO1994019187A1 (fr) 1989-07-06 1992-02-18 Feuilles de polypropylene et procede de fabrication
CA002129970A CA2129970A1 (fr) 1991-12-30 1993-02-18 Stratifies de polypropylene et procede pour leur production

Publications (1)

Publication Number Publication Date
WO1994019187A1 true WO1994019187A1 (fr) 1994-09-01

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1992/011137 WO1994019187A1 (fr) 1989-07-06 1992-02-18 Feuilles de polypropylene et procede de fabrication

Country Status (1)

Country Link
WO (1) WO1994019187A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107521193A (zh) * 2017-08-31 2017-12-29 烟台丰福莱薄膜科技有限公司 一种增强型长效气相防锈薄膜及其生产装置
CN113454174A (zh) * 2019-02-21 2021-09-28 汉高股份有限及两合公司 用于聚乙烯的水基挤出底漆

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB913289A (en) * 1959-04-27 1962-12-19 Dow Chemical Co Process for the production of laminated structures and particularly laminated films and foils
US3507685A (en) * 1967-09-29 1970-04-21 Fmc Corp Method of preparing an anchor coated cellulosic base material
EP0214790A2 (fr) * 1985-09-03 1987-03-18 Mobil Oil Corporation Film orienté biaxialement enduit et son procédé de production
EP0408470A1 (fr) * 1989-07-06 1991-01-16 Eastman Kodak Company Mélanges de polypropylène maléinisé pour les applications aux adhésifs fusibles

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB913289A (en) * 1959-04-27 1962-12-19 Dow Chemical Co Process for the production of laminated structures and particularly laminated films and foils
US3507685A (en) * 1967-09-29 1970-04-21 Fmc Corp Method of preparing an anchor coated cellulosic base material
EP0214790A2 (fr) * 1985-09-03 1987-03-18 Mobil Oil Corporation Film orienté biaxialement enduit et son procédé de production
EP0408470A1 (fr) * 1989-07-06 1991-01-16 Eastman Kodak Company Mélanges de polypropylène maléinisé pour les applications aux adhésifs fusibles

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 7122, Derwent Publications Ltd., London, GB; AN 71-38349S *
DATABASE WPI Week 7425, Derwent Publications Ltd., London, GB; AN 74-46448V *
DATABASE WPI Week 7746, Derwent Publications Ltd., London, GB; AN 77-82109Y *
DATABASE WPIL Week 8605, Derwent Publications Ltd., London, GB; AN 86-031365 *
DATABASE WPIL Week 9019, Derwent Publications Ltd., London, GB; AN 90-144519 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107521193A (zh) * 2017-08-31 2017-12-29 烟台丰福莱薄膜科技有限公司 一种增强型长效气相防锈薄膜及其生产装置
CN113454174A (zh) * 2019-02-21 2021-09-28 汉高股份有限及两合公司 用于聚乙烯的水基挤出底漆
JP2022521308A (ja) * 2019-02-21 2022-04-06 ヘンケル・アクチェンゲゼルシャフト・ウント・コムパニー・コマンディットゲゼルシャフト・アウフ・アクチェン ポリエチレン用水性押出プライマー
CN113454174B (zh) * 2019-02-21 2023-01-24 汉高股份有限及两合公司 用于聚乙烯的水基挤出底漆

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