CN110903541B - Method for producing resin for polyolefin breathable film - Google Patents
Method for producing resin for polyolefin breathable film Download PDFInfo
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- CN110903541B CN110903541B CN201911324375.2A CN201911324375A CN110903541B CN 110903541 B CN110903541 B CN 110903541B CN 201911324375 A CN201911324375 A CN 201911324375A CN 110903541 B CN110903541 B CN 110903541B
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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
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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
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/08—Copolymers of ethene
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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
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/06—Polyethene
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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
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/08—Copolymers of ethene
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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
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2423/10—Homopolymers or copolymers of propene
- C08J2423/12—Polypropene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/005—Additives being defined by their particle size in general
Abstract
The present invention relates to a process for producing a resin for polyolefin breathable films. Specifically disclosed is a method for producing a resin for polyolefin breathable films, which comprises 5% of a low-density polyethylene, 8-10% of a linear low-density polyethylene, 23-30% of a metallocene linear low-density polyethylene, 30-40% of calcium carbonate, etc.; the resin particle for polyolefin breathable films is obtained by kneading calcium carbonate and an antioxidant, mixing with other components, and then carrying out banburying, rolling, crushing, extruding and granulating in sequence. The resin prepared by the method has excellent fluidity and can be used for manufacturing disposable heating sheets.
Description
Technical Field
The invention belongs to the field of high polymer materials, and particularly relates to a preparation method of a resin for a polyolefin breathable film.
Background
Polyolefin breathable film resin (also called as resin for polyolefin high-breathability casting film) is a new high-molecular material developed in the middle and later period of ninety years in foreign research and development. The resin is produced by casting, stretching and other processes, has the characteristics of good air permeability, no water leakage, soft texture, high tensile strength, good sanitary performance, environmental degradation after being discarded and the like, and is widely applied to medical and sanitary product packaging industry, food packaging, daily products and the like. However, the resins for the conventional polyolefin high air-permeable cast films are not ideal in terms of flowability.
Disclosure of Invention
The invention aims to provide a method for preparing a resin for polyolefin breathable films with excellent flow property.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a method for preparing a resin for a polyolefin breathable film, which comprises the following components:
and the method comprises the steps of:
(a) kneading calcium carbonate and an antioxidant in a high-speed kneader;
(b) after kneading, adding other components according to the proportion and mixing; mixing, and banburying the obtained mixture in a pressurized banbury mixer;
(c) banburying, and rolling the obtained mixture in a double-roller rubber mixing mill; feeding the rolled slices into a crusher for crushing;
(d) and after crushing, extruding and granulating the crushed material by a double-screw extruder to obtain the resin particles for the polyolefin breathable film.
In another preferred example, the linear low density polyethylene is eight carbon linear low density polyethylene.
In another preferred embodiment, the calcium carbonate is calcium carbonate with D97<5 microns and particle size of 1.5-3 microns, and the content of the calcium carbonate exceeds 80%.
In another preferred example, the metallocene linear low density polyethylene is a metallocene linear low density polyethylene with a melt index of 4 and a metallocene linear low density polyethylene with a melt index of 2.
In another preferred example, the polyolefin resin for breathable films comprises the following components:
in another preferred embodiment, the antioxidant is selected from the group consisting of: antioxidant 1010, antioxidant 1076, antioxidant 168, antioxidant 264, antioxidant 1098, antioxidant 2246, antioxidant 300, antioxidant 311, antioxidant B102 or a combination thereof.
In another preferred example, the kneading rotation speed is 1000 ± 100 rpm.
In another preferred embodiment, the kneading temperature is 105. + -. 2 ℃.
In another preferred embodiment, the temperature for banburying is 135 +/-3 ℃.
In another preferred embodiment, the rolled sheet has a thickness of 3 ± 0.5 mm.
In another preferred example, the size of the material obtained by crushing is 3 +/-0.5 mm x 4 +/-0.5 mm.
In another preferred example, the twin-screw extruder is a co-rotating twin-screw extruder.
In another preferred example, the double-screw extruder is provided with 12 temperature zones, wherein the temperature zones are 240 ℃, 245 ℃, 235 ℃, 190 ℃, 185 ℃, 180 ℃, 175 ℃, 170 ℃, 165 ℃ and 165 ℃ respectively.
In another preferred embodiment, the die temperature of the twin-screw extruder is 155 ℃.
In another preferred example, the die speed of the twin-screw extruder is 465 rpm.
In another preferred example, the die head of the double-screw extruder is provided with a filter screen for filtering impurities in the material.
In another preferred example, after the step (d), the polyolefin breathable film obtained is subjected to primary drying, sizing and secondary drying with the resin particles.
In another preferred embodiment, the temperature of the secondary drying is 80 ℃.
The main advantages of the invention include:
the resin for polyolefin breathable films prepared by the preparation method has good flow property, and the Melt Index (MI) can reach 5g/10 min. The breathable film made of the resin prepared by the method has the advantages of better tension, more uniform air permeability and the like.
It is to be understood that within the scope of the present invention, the above-described features of the present invention and those specifically described below (e.g., in the examples) may be combined with each other to form new or preferred embodiments. Not to be reiterated herein, but to the extent of space.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. The experimental procedures, in which specific conditions are not noted in the following examples, are generally carried out under conventional conditions or conditions recommended by the manufacturers. Unless otherwise indicated, percentages and parts are by weight. The test materials and reagents used in the following examples are commercially available without specific reference.
Abbreviations represent: metallocene linear low density polyethylene (mLLDPE); low Density Polyethylene (LDPE); linear Low Density Polyethylene (LLDPE); polyolefin elastomers (POE); a polymer polyol (POP); polypropylene (PP). MI represents the melt index.
Example 1 resin for polyolefin breathable film
The raw material sources are as follows: LDPE, eight-carbon LLDPE, mLLDPE (MI of 4), mLLDPE (MI of 2), POE, POP, PP, and antioxidant are commercially available.
Selecting the content of 1.5-3 microns of grain diameter to exceed 80 percent of the total weight; d97<5 micron calcium carbonate.
1. The formula of the resin for polyolefin breathable film is as follows:
2. production of resin pellets for polyolefin breathable film
2.1, 25kg of calcium carbonate particles are placed in a high-speed kneader at a speed of 1000rpm and a temperature of 105. + -. 2 ℃ and kneaded for 20 minutes. Adding an antioxidant, kneading for 15 minutes, adding LDPE, eight-carbon LLDPE, mLLDPE (MI is 4), mLLDPE (MI is 2), POE, POP and PP in proportion, mixing for 5 minutes, banburying in a pressurized internal mixer at 135 +/-3 ℃ for 10 minutes, rolling into 3mm sheets in a double-roller rubber mixing mill, cooling, feeding into a crusher, crushing into granules of about 3x 4mm, and then passing through a double-screw extruder;
2.2, using a co-rotating twin screw, 12 temperature zones of the screw, wherein the temperature is 240 ℃, 245 ℃, 235 ℃, 190 ℃, 185 ℃, 180 ℃, 175 ℃, 170 ℃, 165 ℃ and 165 ℃ respectively (from the temperature zone 1); the die temperature was 155 ℃. Starting to enter the crushed raw materials in the area 1;
2.3, a vacuum pump is installed in the 10 zones, and water vapor generated during melting of the raw materials is extracted by vacuum by using the vacuum pump. The vacuum pressure is 0.08 pa;
2.4, pushing the molten raw materials to a discharge die head (the rotating speed is 465rpm) by using a co-rotating twin screw, wherein the die head is provided with a filter screen for filtering impurities in the raw materials (the pressure of the filter screen is generally controlled within 5 mpa). Filtering the raw materials, extruding the raw materials in a cylindrical shape through a hole at a die head, arranging a cutter (driven by a motor and with the rotating speed of 20.7rpm) at the extrusion part of a die orifice, cutting the extruded raw materials into particles, and arranging circulating water at the cutter for cooling the particles extruded at high temperature;
2.5, blowing the cooled particles into a drier by using a fan and a pipeline, and drying the surface moisture of the particles. After being dried, the granules are blown into a vibrating screen by a fan and a pipeline again, and the oversize granules and the undersize granules which are unqualified are separated;
and 2.6, finally sucking the qualified particles into a drying cylinder by using a vacuum suction machine, setting the temperature in the drying cylinder to be 80 ℃, and drying the moisture on the surfaces of the particles to obtain the resin particles for the polyolefin breathable film.
Comparative example 1 comparative resin
Calcium carbonate with the grain size of 1.5-3 microns and the content of about 10 percent of the total weight is selected.
1. The comparative resin formulation was as follows:
LDPE 10％
mLLDPE (MI of 2) 40%
50 percent of calcium carbonate
2. Production process of comparative resin particles:
referring to the manufacturing process of step 2 of example 1, except that in step 2.1, comparative resin particles were manufactured by directly mixing the three ingredients in proportion and then banburying, rolling and crushing the mixture.
EXAMPLE 2 resin Performance testing
The resin pellets for polyolefin breathable films of the invention and comparative resin pellets were tested using the test standard ASTM D1238 and a melt index meter (meltindexex).
As a result, it was found that the melt index of the resin particles for polyolefin breathable films produced in example 1 reached 5g/10 min; whereas the melt index of the comparative resin pellets was only about 3g/10 min.
Example 3 preparation of breathable films of the invention
The resin pellets for polyolefin breathable films produced in example 1 were used.
Adding the resin particles into a breathable film extruder; in an extruder, heating a screw to 240 ℃, and then melting and extruding the particles to obtain a film with the thickness of 0.4 mm; and heating a heating ring in the oven to 80 ℃, uniformly blowing the heated air to the surface of the extruded film by using an air blower so as to heat the film, and then stretching. The first drawing speed was 37m/min, the second drawing speed was 42.5m/min, the third drawing speed was 50m/min, the fourth drawing speed was 58m/min, and the fifth drawing speed was 68 m/min. The stretch ratio was 1.84 times. And stretching the heated film by utilizing the speed difference, extending polyethylene in the film, forming air-permeable holes invisible to naked eyes after the polyethylene around the calcium carbonate is extended, and cooling and shaping to obtain the air-permeable film.
Comparative example 2 preparation of comparative breathable films
The comparative resin particles manufactured in comparative example 1 were used.
Adding the resin particles into a breathable film extruder; in an extruder, heating a screw to 240 ℃, and then melting and extruding the particles to obtain a film with the thickness of 0.4 mm; heating the heat conducting oil by using an oil temperature machine, and transferring the heated heat conducting oil into the roller; the surface of the roller is heated from inside to outside by utilizing the heated heat conduction oil, and the temperature of the surface of the roller is used for conducting the temperature of the extruded film to the surface of the film when the film passes through the roller, so that the film is heated and then stretched; the speed of the first drawing was 37m/min, the speed of the second drawing was 48.1m/min, and the speed of the third drawing was 68 m/min. The stretching ratio is 1.84 times, and the contrast breathable film is obtained after cooling and shaping.
Example 4 Performance testing of breathable films
The films prepared in example 3 of the present invention and the comparative film of comparative example 2 were tested for various properties (e.g., grammage, tensile strength, elongation, water resistance, moisture vapor transmission, air permeability, sphygmomanometer seconds, temperature) and the results of the comparison are shown in either table 1 or table 2 below.
The following labels 1, 2, 3, 4, 5 represent test points of the same film from left to right (transverse); 1 is the leftmost test point; and 5 is the rightmost test point.
TABLE 1 breathable film test results of the invention
Table 2 comparative breathable film test results
And (4) conclusion:
5.1, it can be seen from the test results of the above described joker air permeability apparatus that: the air permeability of the comparative breathable film was not uniform: the maximum reached 27000 and the minimum was only 7500, which differed by 19500. The difference between the maximum 17782 and the minimum 16640 of the breathable films of the invention was only 1142. Therefore, the left and right air permeability of the air permeable film disclosed by the invention is relatively small in fluctuation and relatively consistent in performance.
5.2, the single-film temperature test results show that: the comparative breathable film had unstable heat generation. At 15 minutes, some points generate heat faster, and some points generate heat slower; after 60 minutes, the temperature at the high temperature is obviously reduced, and the low temperature does not generate heat continuously. The breathable film of the invention has stable heating, continuously and slowly heats, and is more beneficial to the use of finished products of disposable heating sheets.
5.3, as can be seen from the number of seconds of the air passage duration (seconds) test using a sphygmomanometer: compared with the air-permeable film, the difference between the left and right permeation rates of air is larger under the same air pressure. The fastest 15 seconds of permeation is completed, and the slowest 70 seconds of permeation is completed. Because disposable heating piece is that the air gets into in the heating piece and takes place chemical reaction with the heating powder and generate heat, consequently, the difference of air permeation rate leads to the place that the ventilated membrane osmotic speed is slow to generate heat the speed and slows down, and the place that osmotic speed is fast generates heat the speed and is fast. The air permeation speed of the breathable film is more consistent, so that the heating speed of the heating sheet is more consistent.
5.4, it can be seen from the moisture permeability data that: compared with the left and right moisture permeability of the breathable film and the middle moisture permeability, the moisture permeability fluctuates greatly, and the air and moisture permeation speeds are different. The breathable film has stable moisture permeability and more uniform permeation of air and moisture.
5.5, the hot-pressing sealing is to heat the material at the sealing position to make the material reach viscous flow state and then pressurize to make the material be sealed. Tests show that the heat sealing property of the breathable film is better and wider, and the heat sealing temperature is 85-150 ℃. While the heat-seal temperature range for the comparative films was only 110-120 ℃.
5.6, the disposable heating sheet manufactured by the breathable film has longer heating time, and the heating time can be maintained for more than 15 hours when the temperature is more than 45 ℃.
5.7, in the manufacturing method of the invention, the processing temperature is lower by 170-210 ℃ (the surface of the screw needs heating temperature); the melt temperature was maintained at 180 ℃ (the temperature of the material after melting in the screw).
All documents referred to herein are incorporated by reference into this application as if each were individually incorporated by reference. Furthermore, it should be understood that various changes and modifications of the present invention can be made by those skilled in the art after reading the above teachings of the present invention, and these equivalents also fall within the scope of the present invention as defined by the appended claims.
Claims (9)
1. A process for producing a resin for polyolefin breathable films,
the resin for polyolefin gas-permeable films comprises the following components:
low density polyethylene 5%
Eight carbon Linear Low Density polyethylene 10%
17% of metallocene linear low density polyethylene with a melt index of 4g/10min
11% metallocene linear low density polyethylene having a melt index of 2g/10min
POE 6%
POP 5%
Polypropylene (5%)
1 percent of antioxidant
40% of calcium carbonate;
the calcium carbonate is calcium carbonate with the particle size of 1.5-3 microns, the content of the calcium carbonate exceeds 80 percent of the total weight, and D97 is less than 5 microns;
and the method comprises the steps of:
(a) kneading calcium carbonate and an antioxidant in a high-speed kneader;
(b) after kneading, adding other components according to the proportion and mixing; mixing, and banburying the obtained mixture in a pressure banbury mixer;
(c) banburying, and rolling the obtained mixture in a double-roller rubber mixing mill; crushing the rolled slices in a crusher;
(d) and after crushing, extruding and granulating the crushed material by a double-screw extruder to obtain the resin particles for the polyolefin breathable film.
2. The manufacturing method according to claim 1, wherein the rolled sheet has a thickness of 3 ± 0.5 mm.
3. The method of claim 1, wherein the size of the pulverized material is 3 ± 0.5mm x 4 ± 0.5 mm.
4. The manufacturing method according to claim 1,
after the step (d), carrying out primary drying, screening and secondary drying on the obtained polyolefin breathable film by using the resin particles.
5. The production method according to claim 1, wherein the kneading is performed at a rotation speed of 1000 ± 100 rpm.
6. The production method according to claim 1, wherein the kneading temperature is 105 ± 2 ℃.
7. The method of claim 1, wherein the temperature of said banburying is 135 ± 3 ℃.
8. The method of manufacturing of claim 1, wherein the twin screw extruder is a co-rotating twin screw extruder.
9. The method of claim 1, wherein the twin screw extruder is provided with a total of 12 temperature zones, the temperatures being 240 ℃, 245 ℃, 235 ℃, 190 ℃, 185 ℃, 180 ℃, 175 ℃, 170 ℃, 165 ℃.
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Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003012842A (en) * | 2000-09-21 | 2003-01-15 | Sekisui Chem Co Ltd | Fine porous film |
| CN1453305A (en) * | 2002-04-26 | 2003-11-05 | 南安长利塑胶有限公司 | Prepn of polyolefine resin specially for permeating curtain coated film |
| JP2008179757A (en) * | 2006-12-28 | 2008-08-07 | Nippon Polyethylene Kk | Air-permeable film |
| CN104448514A (en) * | 2014-11-03 | 2015-03-25 | 重庆和泰塑胶股份有限公司 | Breathable resin with high breathability and preparation method of breathable resin |
| CN104558795A (en) * | 2014-12-08 | 2015-04-29 | 佛山市联塑万嘉新卫材有限公司 | High-water-permeability high-strength polyolefin air-permeable film and preparation method thereof |
| CN106084379A (en) * | 2016-06-14 | 2016-11-09 | 王健 | A kind of shrink sleeve film automatically |
| CN106414571A (en) * | 2014-06-03 | 2017-02-15 | 三菱树脂株式会社 | Porous film and storage bag |
| CN108000997A (en) * | 2018-01-22 | 2018-05-08 | 杭州星点包装材料有限公司 | High-strength polyester spun-bonded non-woven fabrics Quick lime desiccant packaging film and its production method |
| CN108099148A (en) * | 2017-12-05 | 2018-06-01 | 聚石化学（长沙）有限公司 | The ventilated membrane and its production technology of a kind of property |
| CN108290385A (en) * | 2016-01-07 | 2018-07-17 | 爱索尔包装有限公司 | The layered product printed for vignetting and tone images |
| CN108407420A (en) * | 2018-03-01 | 2018-08-17 | 汕头市汇诚包装材料实业有限公司 | A kind of composite polyethylene film and preparation method thereof containing chitosan |
| CN108715656A (en) * | 2018-05-28 | 2018-10-30 | 池州市锐强新材料有限公司 | A kind of PE/CaCO3Ventilative film master batch and preparation method thereof |
| CN109177399A (en) * | 2018-09-12 | 2019-01-11 | 芮珉翔 | It is a kind of for bonding the PE film of pet nonwoven cloth material |
| CN110079001A (en) * | 2019-05-27 | 2019-08-02 | 佛山华韩卫生材料有限公司 | A kind of very thin high ventilative zero leakage counterdie of pro-skin |
-
2019
- 2019-12-20 CN CN201911324375.2A patent/CN110903541B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003012842A (en) * | 2000-09-21 | 2003-01-15 | Sekisui Chem Co Ltd | Fine porous film |
| CN1453305A (en) * | 2002-04-26 | 2003-11-05 | 南安长利塑胶有限公司 | Prepn of polyolefine resin specially for permeating curtain coated film |
| JP2008179757A (en) * | 2006-12-28 | 2008-08-07 | Nippon Polyethylene Kk | Air-permeable film |
| CN106414571A (en) * | 2014-06-03 | 2017-02-15 | 三菱树脂株式会社 | Porous film and storage bag |
| CN104448514A (en) * | 2014-11-03 | 2015-03-25 | 重庆和泰塑胶股份有限公司 | Breathable resin with high breathability and preparation method of breathable resin |
| CN104558795A (en) * | 2014-12-08 | 2015-04-29 | 佛山市联塑万嘉新卫材有限公司 | High-water-permeability high-strength polyolefin air-permeable film and preparation method thereof |
| CN108290385A (en) * | 2016-01-07 | 2018-07-17 | 爱索尔包装有限公司 | The layered product printed for vignetting and tone images |
| CN106084379A (en) * | 2016-06-14 | 2016-11-09 | 王健 | A kind of shrink sleeve film automatically |
| CN108099148A (en) * | 2017-12-05 | 2018-06-01 | 聚石化学（长沙）有限公司 | The ventilated membrane and its production technology of a kind of property |
| CN108000997A (en) * | 2018-01-22 | 2018-05-08 | 杭州星点包装材料有限公司 | High-strength polyester spun-bonded non-woven fabrics Quick lime desiccant packaging film and its production method |
| CN108407420A (en) * | 2018-03-01 | 2018-08-17 | 汕头市汇诚包装材料实业有限公司 | A kind of composite polyethylene film and preparation method thereof containing chitosan |
| CN108715656A (en) * | 2018-05-28 | 2018-10-30 | 池州市锐强新材料有限公司 | A kind of PE/CaCO3Ventilative film master batch and preparation method thereof |
| CN109177399A (en) * | 2018-09-12 | 2019-01-11 | 芮珉翔 | It is a kind of for bonding the PE film of pet nonwoven cloth material |
| CN110079001A (en) * | 2019-05-27 | 2019-08-02 | 佛山华韩卫生材料有限公司 | A kind of very thin high ventilative zero leakage counterdie of pro-skin |
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