CN105885283A - PVC (polyvinyl chloride) stretch film and method for preparing same - Google Patents
PVC (polyvinyl chloride) stretch film and method for preparing same Download PDFInfo
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- CN105885283A CN105885283A CN201610272686.9A CN201610272686A CN105885283A CN 105885283 A CN105885283 A CN 105885283A CN 201610272686 A CN201610272686 A CN 201610272686A CN 105885283 A CN105885283 A CN 105885283A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—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 a halogen; Compositions of derivatives of such polymers
- C08L27/02—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 a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—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 a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
-
- 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- 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
-
- 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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- 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
- B29L2007/00—Flat articles, e.g. films or sheets
-
- 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
- C08J2327/00—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 a halogen; Derivatives of such polymers
- C08J2327/02—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 a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2327/04—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 a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08J2327/06—Homopolymers or copolymers of vinyl chloride
-
- 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
- C08J2469/00—Characterised by the use of polycarbonates; Derivatives of polycarbonates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/16—Applications used for films
-
- 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
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention discloses a PVC (polyvinyl chloride) stretch film and a method for preparing the same. The PVC stretch film comprises, by weight, 41-55 parts of PVC resin, 3-20 parts of polypropylene carbonate, 3-16 parts of epoxidized soybean oil, 2-15 parts of sodium laureth sulfate, 1-19 parts of dioctyl phthalate, 4-12 parts of polyisobutene, 7-17 parts of tributyl phosphate, 4-14 parts of triethyl citrate, 2-13 parts of hexachlorocyclopentadiene and 5-16 parts of hydroxypropyl methyl celluloses. The method includes mixing components with one another according to the weights and evenly stirring the components in a stirrer to obtain mixtures; extruding the mixtures by the aid of a double-screw extruder; forming a film by means of casting and cooling and packaging the film to obtain the PVC stretch film. The PVC stretch film and the method have the advantages that the elastic resilience and adhesion force of the PVC stretch film can be improved under the synergic effects of the components, and the PVC stretch film can be widely applied to the field of packaging.
Description
Technical field
The invention belongs to packaging material field, be specifically related to a kind of PVC and be wound around film and preparation method thereof.
Background technology
PVC is wound around film, is a kind of special winding film, be commonly used to wound wire cable, various polish cylinder, plant equipment,
The special-shaped product packagings such as Hardware fitting, sebific duct, steel pipe, furniture, building and ornament materials, Sneakers, non-woven fabrics, are with quiet
Electro-adsorption is produced from viscosity, and packaged product will not be produced secondary pollution, simultaneously because the distinctive high grade of transparency of product, permissible
Make packaged product more beautiful.Having packing cost low, easy to operate, shrinkage temperature is low, and contractive effect is splendid, and gloss is transparent,
The advantage that shrinkage factor is big.
In prior art, PVC is wound around film resilience and stiction force is not enough, and the most cracking is present, and therefore its performance needs into one
Step improves.
Summary of the invention
In order to overcome above the deficiencies in the prior art, the invention provides a kind of PVC and be wound around film and preparation method thereof, prepare twines
Synergism between film is by component, improves resilience and stiction force, can be widely used in packaging field.
The technical solution used in the present invention is: a kind of PVC is wound around film, is made up of each component of following mass parts: polyvinyl chloride resin 41-55
Part, poly (propylene carbonate) 3-20 part, epoxy soybean oil 3-16 part, sodium laureth sulfate 2-15 part, phthalic acid
Dioctyl ester 1-19 part, polyisobutylene 4-12 part, tributyl phosphate 7-17 part, triethyl citrate 4-14 part, chlordene ring penta 2
Alkene 2-13 part, hydroxypropyl methyl cellulose 5-16 part.
Preferably, a kind of PVC is wound around film, is made up of each component of following mass parts: polyvinyl chloride resin 45-52 part, polymerized thylene carbonate
Propyl ester 6-14 part, epoxy soybean oil 7-12 part, sodium laureth sulfate 7-11 part, dioctyl phthalate 6-13 part,
Polyisobutylene 7-11 part, tributyl phosphate 10-14 part, triethyl citrate 6-11 part, hexacholorocyclopentadiene 6-10 part, hydroxyl
Propyl methocel 6-12 part.
It is furthermore preferred that a kind of PVC is wound around film, it is made up of each component of following mass parts: polyvinyl chloride resin 49 parts, polymerized thylene carbonate
Propyl ester 10 parts, epoxy soybean oil 8 parts, sodium laureth sulfate 9 parts, dioctyl phthalate 11 parts, poly-isobutyl
8 parts of alkene, tributyl phosphate 12 parts, triethyl citrate 9 parts, hexacholorocyclopentadiene 7 parts, hydroxypropyl methyl cellulose 10
Part.
A kind of PVC is wound around the preparation method of film, comprises the following steps:
(1) by above-mentioned mass parts, by polyvinyl chloride resin, poly (propylene carbonate), epoxy soybean oil, sodium laureth sulfate,
Dioctyl phthalate, polyisobutylene, tributyl phosphate, triethyl citrate, hexacholorocyclopentadiene, hydroxypropyl methyl are fine
After dimension element mixing, it is placed in blender, after stirring, obtains compound；
(2) being extruded through double screw extruder by step (1) gained compound, its Zhong-1 block temperature is 175-190 DEG C, two district's temperature
Degree is for 180-195 DEG C, and three district's temperature are 185-200 DEG C, and four district's temperature are 200-220 DEG C, obtain coarse fodder；
(3) by step (2) gained coarse fodder casting film-forming, casting temperature is 210-250 DEG C, packs and get final product after cooling.
Preferably, above-mentioned steps (1) blender temperature is set to 200-230 DEG C.
Preferably, the draw ratio of above-mentioned steps (2) double-screw extruder screw is 28-32:1.
Beneficial effect: the PVC winding film resilience that the present invention prepares is between 75-82%, and stiction force is at 1.53-1.75N/mm
Between, by the synergism between component, improve resilience and stiction force, can be widely used in packaging field.
Detailed description of the invention
Embodiment 1
A kind of PVC is wound around film, is made up of each component of following mass parts: polyvinyl chloride resin 41 parts, poly (propylene carbonate) 3 parts,
Epoxy soybean oil 3 parts, sodium laureth sulfate 2 parts, dioctyl phthalate 1 part, polyisobutylene 4 parts, phosphoric acid
Tributyl 7 parts, triethyl citrate 4 parts, hexacholorocyclopentadiene 2 parts, hydroxypropyl methyl cellulose 5 parts.
Preparation method:
(1) by above-mentioned mass parts, by polyvinyl chloride resin, poly (propylene carbonate), epoxy soybean oil, sodium laureth sulfate,
Dioctyl phthalate, polyisobutylene, tributyl phosphate, triethyl citrate, hexacholorocyclopentadiene, hydroxypropyl methyl are fine
After dimension element mixing, it is placed in blender, after stirring at 200 DEG C, obtains compound；
(2) being extruded through double screw extruder by step (1) gained compound, its Zhong-1 block temperature is 175 DEG C, and two district's temperature are
180 DEG C, three district's temperature are 185 DEG C, and four district's temperature are 200 DEG C, obtain coarse fodder, wherein the draw ratio of double-screw extruder screw
For 28:1；
(3) by step (2) gained coarse fodder casting film-forming, casting temperature is 210 DEG C, packs and get final product after cooling.
Embodiment 2
A kind of PVC is wound around film, is made up of each component of following mass parts: polyvinyl chloride resin 55 parts, poly (propylene carbonate) 20 parts,
Epoxy soybean oil 16 parts, sodium laureth sulfate 15 parts, dioctyl phthalate 19 parts, polyisobutylene 12 parts,
Tributyl phosphate 17 parts, triethyl citrate 14 parts, hexacholorocyclopentadiene 13 parts, hydroxypropyl methyl cellulose 16 parts.
Preparation method:
(1) by above-mentioned mass parts, by polyvinyl chloride resin, poly (propylene carbonate), epoxy soybean oil, sodium laureth sulfate,
Dioctyl phthalate, polyisobutylene, tributyl phosphate, triethyl citrate, hexacholorocyclopentadiene, hydroxypropyl methyl are fine
After dimension element mixing, it is placed in blender, after stirring at 230 DEG C, obtains compound；
(2) being extruded through double screw extruder by step (1) gained compound, its Zhong-1 block temperature is 190 DEG C, and two district's temperature are
195 DEG C, three district's temperature are 200 DEG C, and four district's temperature are 220 DEG C, obtain coarse fodder, wherein the draw ratio of double-screw extruder screw
For 32:1；
(3) by step (2) gained coarse fodder casting film-forming, casting temperature is 250 DEG C, packs and get final product after cooling.
Embodiment 3
A kind of PVC is wound around film, is made up of each component of following mass parts: polyvinyl chloride resin 45 parts, poly (propylene carbonate) 6 parts,
Epoxy soybean oil 7 parts, sodium laureth sulfate 7 parts, dioctyl phthalate 6 parts, polyisobutylene 7 parts, phosphoric acid
Tributyl 10 parts, triethyl citrate 6 parts, hexacholorocyclopentadiene 6 parts, hydroxypropyl methyl cellulose 6 parts.
Preparation method:
(1) by above-mentioned mass parts, by polyvinyl chloride resin, poly (propylene carbonate), epoxy soybean oil, sodium laureth sulfate,
Dioctyl phthalate, polyisobutylene, tributyl phosphate, triethyl citrate, hexacholorocyclopentadiene, hydroxypropyl methyl are fine
After dimension element mixing, it is placed in blender, after stirring at 210 DEG C, obtains compound；
(2) being extruded through double screw extruder by step (1) gained compound, its Zhong-1 block temperature is 180 DEG C, and two district's temperature are
185 DEG C, three district's temperature are 190 DEG C, and four district's temperature are 205 DEG C, obtain coarse fodder, wherein the draw ratio of double-screw extruder screw
For 30:1；
(3) by step (2) gained coarse fodder casting film-forming, casting temperature is 220 DEG C, packs and get final product after cooling.
Embodiment 4
A kind of PVC is wound around film, is made up of each component of following mass parts: polyvinyl chloride resin 52 parts, poly (propylene carbonate) 14 parts,
Epoxy soybean oil 12 parts, sodium laureth sulfate 11 parts, dioctyl phthalate 13 parts, polyisobutylene 11 parts,
Tributyl phosphate 14 parts, triethyl citrate 11 parts, hexacholorocyclopentadiene 10 parts, hydroxypropyl methyl cellulose 12 parts.
Preparation method:
(1) by above-mentioned mass parts, by polyvinyl chloride resin, poly (propylene carbonate), epoxy soybean oil, sodium laureth sulfate,
Dioctyl phthalate, polyisobutylene, tributyl phosphate, triethyl citrate, hexacholorocyclopentadiene, hydroxypropyl methyl are fine
After dimension element mixing, it is placed in blender, after stirring at 225 DEG C, obtains compound；
(2) being extruded through double screw extruder by step (1) gained compound, its Zhong-1 block temperature is 185 DEG C, and two district's temperature are
190 DEG C, three district's temperature are 195 DEG C, and four district's temperature are 215 DEG C, obtain coarse fodder, wherein the draw ratio of double-screw extruder screw
For 30:1；
(3) by step (2) gained coarse fodder casting film-forming, casting temperature is 240 DEG C, packs and get final product after cooling.
Embodiment 5
A kind of PVC is wound around film, is made up of each component of following mass parts: polyvinyl chloride resin 49 parts, poly (propylene carbonate) 10 parts,
Epoxy soybean oil 8 parts, sodium laureth sulfate 9 parts, dioctyl phthalate 11 parts, polyisobutylene 8 parts, phosphoric acid
Tributyl 12 parts, triethyl citrate 9 parts, hexacholorocyclopentadiene 7 parts, hydroxypropyl methyl cellulose 10 parts.
Preparation method:
(1) by above-mentioned mass parts, by polyvinyl chloride resin, poly (propylene carbonate), epoxy soybean oil, sodium laureth sulfate,
Dioctyl phthalate, polyisobutylene, tributyl phosphate, triethyl citrate, hexacholorocyclopentadiene, hydroxypropyl methyl are fine
After dimension element mixing, it is placed in blender, after stirring at 220 DEG C, obtains compound；
(2) being extruded through double screw extruder by step (1) gained compound, its Zhong-1 block temperature is 180 DEG C, and two district's temperature are
190 DEG C, three district's temperature are 195 DEG C, and four district's temperature are 210 DEG C, obtain coarse fodder, wherein the draw ratio of double-screw extruder screw
For 30:1；
(3) by step (2) gained coarse fodder casting film-forming, casting temperature is 230 DEG C, packs and get final product after cooling.
Comparative example
Difference with embodiment 5 is to be not added with hexacholorocyclopentadiene.
A kind of PVC is wound around film, is made up of each component of following mass parts: polyvinyl chloride resin 49 parts, poly (propylene carbonate) 10 parts,
Epoxy soybean oil 8 parts, sodium laureth sulfate 9 parts, dioctyl phthalate 11 parts, polyisobutylene 8 parts, phosphoric acid
Tributyl 12 parts, triethyl citrate 9 parts, hydroxypropyl methyl cellulose 10 parts.
Preparation method:
(1) by above-mentioned mass parts, by polyvinyl chloride resin, poly (propylene carbonate), epoxy soybean oil, sodium laureth sulfate,
After the mixing of dioctyl phthalate, polyisobutylene, tributyl phosphate, triethyl citrate, hydroxypropyl methyl cellulose, put
In blender, after stirring at 220 DEG C, obtain compound；
(2) being extruded through double screw extruder by step (1) gained compound, its Zhong-1 block temperature is 180 DEG C, and two district's temperature are
190 DEG C, three district's temperature are 195 DEG C, and four district's temperature are 210 DEG C, obtain coarse fodder, wherein the draw ratio of double-screw extruder screw
For 30:1；
(3) by step (2) gained coarse fodder casting film-forming, casting temperature is 230 DEG C, packs and get final product after cooling.
Performance test:
It is as shown in the table that the PVC that embodiment 1-5 and comparative example prepare is wound around film properties test result:
As can be seen from the above table: the PVC winding film resilience that embodiment 1-5 prepares is between 75-82%, and stiction force exists
Between 1.53-1.75N/mm, and the winding film resilience that comparative example prepares is 63%, and stiction force is 1.50N/mm.Thus may be used
Knowing, the PVC that the present invention prepares is wound around film and passes through the synergism between component, improves resilience and stiction force, can be widely used for
In packaging field.
Claims (6)
1. a PVC is wound around film, it is characterized in that, be made up of the component of following mass parts: polyvinyl chloride resin 41-55 part, poly (propylene carbonate) 3-20 part, epoxy soybean oil 3-16 part, sodium laureth sulfate 2-15 part, dioctyl phthalate 1-19 part, polyisobutylene 4-12 part, tributyl phosphate 7-17 part, triethyl citrate 4-14 part, hexacholorocyclopentadiene 2-13 part, hydroxypropyl methyl cellulose 5-16 part.
A kind of PVC the most according to claim 1 is wound around film, it is characterized in that, be made up of the component of following mass parts: polyvinyl chloride resin 45-52 part, poly (propylene carbonate) 6-14 part, epoxy soybean oil 7-12 part, sodium laureth sulfate 7-11 part, dioctyl phthalate 6-13 part, polyisobutylene 7-11 part, tributyl phosphate 10-14 part, triethyl citrate 6-11 part, hexacholorocyclopentadiene 6-10 part, hydroxypropyl methyl cellulose 6-12 part.
A kind of PVC the most according to claim 1 is wound around film, it is characterized in that, be made up of the component of following mass parts: polyvinyl chloride resin 49 parts, poly (propylene carbonate) 10 parts, epoxy soybean oil 8 parts, sodium laureth sulfate 9 parts, dioctyl phthalate 11 parts, polyisobutylene 8 parts, tributyl phosphate 12 parts, triethyl citrate 9 parts, hexacholorocyclopentadiene 7 parts, hydroxypropyl methyl cellulose 10 parts.
4. a kind of PVC described in claims 1 to 3 any one is wound around the preparation method of film, it is characterised in that: comprise the following steps:
(1) by above-mentioned mass parts, after polyvinyl chloride resin, poly (propylene carbonate), epoxy soybean oil, sodium laureth sulfate, dioctyl phthalate, polyisobutylene, tributyl phosphate, triethyl citrate, hexacholorocyclopentadiene, hydroxypropyl methyl cellulose mixing, it is placed in blender, after stirring, obtains compound；
(2) being extruded through double screw extruder by step (1) gained compound, its Zhong-1 block temperature is 175-190 DEG C, and two district's temperature are 180-195 DEG C, and three district's temperature are 185-200 DEG C, and four district's temperature are 200-220 DEG C, obtain coarse fodder；
(3) by step (2) gained coarse fodder casting film-forming, casting temperature is 210-250 DEG C, packs and get final product after cooling.
A kind of PVC the most according to claim 4 is wound around the preparation method of film, it is characterised in that: described step (1) blender temperature is set to 200-230 DEG C.
A kind of PVC the most according to claim 4 is wound around the preparation method of film, it is characterised in that: the draw ratio of described step (2) double-screw extruder screw is 28-32:1.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610272686.9A CN105885283A (en) | 2016-04-28 | 2016-04-28 | PVC (polyvinyl chloride) stretch film and method for preparing same |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610272686.9A CN105885283A (en) | 2016-04-28 | 2016-04-28 | PVC (polyvinyl chloride) stretch film and method for preparing same |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108794915A (en) * | 2017-04-28 | 2018-11-13 | 中国石油化工股份有限公司 | The PVC transparent hose compositions and its preparation process of a kind of enhancing of steel wire and application |
| CN108976740A (en) * | 2017-05-31 | 2018-12-11 | 中国石油化工股份有限公司 | A kind of controlled degradation PVC composition and preparation method |
| CN110016192A (en) * | 2019-04-23 | 2019-07-16 | 深圳共享网络科技发展有限公司 | A kind of preparation method of high-intensitive winding film |
| CN111574784A (en) * | 2020-05-20 | 2020-08-25 | 江苏大海塑料股份有限公司 | High-strength anti-puncture winding film with high brightness and preparation method thereof |
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| CN111574784A (en) * | 2020-05-20 | 2020-08-25 | 江苏大海塑料股份有限公司 | High-strength anti-puncture winding film with high brightness and preparation method thereof |
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Application publication date: 20160824 |
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