CN114228254A - Manufacturing method of high-concentration alcohol resistant composite bag - Google Patents
Manufacturing method of high-concentration alcohol resistant composite bag Download PDFInfo
- Publication number
- CN114228254A CN114228254A CN202210062958.8A CN202210062958A CN114228254A CN 114228254 A CN114228254 A CN 114228254A CN 202210062958 A CN202210062958 A CN 202210062958A CN 114228254 A CN114228254 A CN 114228254A
- Authority
- CN
- China
- Prior art keywords
- film
- manufacturing
- modified
- ptfe membrane
- concentration alcohol
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B70/00—Making flexible containers, e.g. envelopes or bags
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B70/00—Making flexible containers, e.g. envelopes or bags
- B31B70/14—Cutting, e.g. perforating, punching, slitting or trimming
- B31B70/20—Cutting sheets or blanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B70/00—Making flexible containers, e.g. envelopes or bags
- B31B70/60—Uniting opposed surfaces or edges; Taping
- B31B70/64—Uniting opposed surfaces or edges; Taping by applying heat or pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B70/00—Making flexible containers, e.g. envelopes or bags
- B31B70/74—Auxiliary operations
-
- 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
- B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
- B29K2027/12—Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
- B29K2027/18—PTFE, i.e. polytetrafluorethene, e.g. ePTFE, i.e. expanded polytetrafluorethene
-
- 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
- B29K2077/00—Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material
Abstract
The invention is suitable for the technical field of composite bag manufacturing, and provides a manufacturing method of a high-concentration alcohol-resistant composite bag, which mainly comprises the following steps: the composite bag has the characteristics of acid resistance, alkali resistance and organic solvent resistance by adopting the modified PTFE film as an intermediate film, can effectively prevent high-concentration alcohol from seeping, has enhanced surface property compared with the PTFE film, and has better cohesiveness when being compounded with an outer film and an inner film; in addition, through adopting POE modified CPP film as the inner membrance, compare adhesion strength with pure CPP film and increase to some extent, can effectively prevent that the lamination from appearing because of the infiltration of alcohol in the compound bag, can keep the integrality of compound bag, effectively prolong the life of compound bag.
Description
Technical Field
The invention belongs to the technical field of composite bags, and particularly relates to a manufacturing method of a high-concentration alcohol resistant composite bag.
Background
The plastic composite film is used as a food packaging material widely used at present, is formed by compounding different plastic layers, has higher barrier property, is suitable for packaging most of foods, but when the content is alcohol with the concentration of more than 75%, the alcohol in the composite film can slowly permeate and volatilize from inside to outside, so that the composite bag has the phenomenon of bubble layering, the service life of the bag is influenced, and meanwhile, the alcohol is used as flammable micro-strip irritant liquid, so that the permeated alcohol can bring unpleasant smell to people and can generate potential safety hazards to the surrounding environment.
Disclosure of Invention
The invention aims to provide a manufacturing method of a high-concentration alcohol resistant composite bag, and aims to solve the problems that the content of the composite bag is easy to permeate and volatilize outwards when the content is high-concentration alcohol, the composite bag is layered and easy to damage, and potential safety hazards are generated to the surrounding environment.
The invention provides a manufacturing method of a high-concentration alcohol resistant composite bag, which comprises the following steps:
preparing a modified PTFE membrane: the PTFE, the non-polar agent and the lubricant are mixed in a mass ratio of (80-85%): (10% -15%): (2% -4%) are uniformly mixed, the mixture is sequentially subjected to blending and flow extension to obtain a PTFE membrane, and low-temperature radio frequency plasma is adopted to carry out surface modification on the PTFE membrane to obtain a modified PTFE membrane;
compounding: taking a BOPA film as an outer film, taking the modified PTFE film as an intermediate film, taking a POE modified CPP film as an inner film, sequentially arranging the outer film, the intermediate film and the inner film from top to bottom, adding a high-viscosity adhesive and a solvent between the film layers, and performing hot-melt compounding for five times in a constant-temperature oven to form a BOPA/modified PTFE/modified CPP semi-finished product;
curing and forming: putting the BOPA/modified PTFE/modified CPP semi-finished product into a curing chamber for curing for 48 hours to form a composite film;
assembling a filling opening for forming: selecting HDPE material, and injection molding by an injection molding machine to assemble a filling opening;
performing heat sealing, namely performing alignment molding on the composite film in a bag making machine, heating and heat sealing through a heat sealing cutting die, and performing heat sealing on the assembling filling opening as required;
and (4) bag making, namely cutting the composite film subjected to bag making and heat sealing into a composite bag to obtain a finished product.
Further, the specific steps of modifying the surface of the PTFE membrane with low-temperature rf plasma in the step of producing a modified PTFE membrane include:
cleaning and cutting the PTFE membrane into a preset size;
placing the cut PTFE membrane in a reaction chamber of plasma equipment, setting the distance between polar plates to be 5cm, adjusting the air pressure in the reaction chamber to be below 2.5Pa, and introducing N2And H2；
And after the air pressure in the reaction cavity is stable, discharging the PTFE membrane, wherein the discharge power is 300W, the discharge time is 6min, and obtaining the modified PTFE membrane after the discharge is finished.
Further, N is introduced2And H2When N is present2And H2The flow rates of both gases during mixing were 40 ml/min.
Further, in the step of producing a modified PTFE film, the non-polar agent and the lubricant are polypropylene and silicone oil, respectively.
Further, in the step compounding, the temperature of the five times of hot melt compounding is 50 ℃, 60 ℃, 70 ℃, 75 ℃ and 80 ℃ in sequence.
Further, in the step of aging molding, the temperature in the aging chamber is constant at 55 ℃.
Further, in the step heat-sealing, the heat-sealing temperature is 180 ℃ to 200 ℃.
Further, before the step of compounding, the method further comprises printing a pattern on the BOPA film through a printer.
The invention has the beneficial effects that: the invention provides a manufacturing method of a high-concentration alcohol resistant composite bag, which is characterized in that a modified PTFE (polytetrafluoroethylene) film is used as an intermediate film, so that the composite bag has the characteristics of acid resistance, alkali resistance and organic solvent resistance, the high-concentration alcohol can be effectively prevented from seeping, the surface property of the modified PTFE film is enhanced compared with that of the PTFE film, and the modified PTFE film has better cohesiveness when being compounded with an outer film and an inner film; in addition, the POE modified CPP film is used as the inner film, compared with a pure CPP film, the adhesive strength is increased, the composite bag can be effectively prevented from layering due to alcohol permeation, the composite bag can provide good barrier property for alcohol-containing contents, the integrity of the composite bag is kept, and the service life of the composite bag can be effectively prolonged.
Drawings
Fig. 1 is a flowchart of a method for manufacturing a high concentration alcohol resistant composite bag according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following detailed description of specific implementations of the present invention is provided in conjunction with specific embodiments:
example (b):
polytetrafluoroethylene (PTFE) has excellent chemical properties, can resist acid, alkali and organic solvents, and has the characteristics of insolubility, insolubility swelling resistance, no moisture absorption and the like in any solvent, so that the Polytetrafluoroethylene (PTFE) is widely applied to the fields of electrical appliances, chemical engineering, aviation, aerospace, machinery, biomedicine and the like. However, Polytetrafluoroethylene (PTFE) also has the disadvantages of low surface energy and poor adhesion, which limits its application in adhesion, printing, packaging materials, etc., and therefore when the present invention is applied, we have carried out a corresponding surface modification technique on tetrafluoroethylene (PTFE).
The CPP film has low adhesive force, so that the application of the CPP film in the plastic flexible package is limited, the POE resin is added into the raw material resin of the cast polypropylene film (CPP film) to modify the POE film, the adhesive strength of the CPP film is doubled by modification compared with that before the CPP film is not modified, the delamination of the packaging bag due to the permeation of alcohol is effectively prevented, and in addition, the POE resin modified CPP film is added, so that the heat-sealing temperature of the packaging bag can be obviously reduced.
The BOPA film is biaxially oriented nylon, has the advantages of good puncture resistance, impact strength, friction strength, bending strength, good printing effect, high barrier property and the like, and is generally applied to the packaging industry.
The embodiment of the invention provides a manufacturing method of a high-concentration alcohol resistant composite bag, which comprises the following steps of:
step S1, producing a modified PTFE film:
the PTFE, the non-polar agent and the lubricant are mixed in a mass ratio of (80-85%): (10% -15%): (2% -4%) are uniformly mixed, the mixture is sequentially subjected to blending and flow extension to obtain a PTFE membrane, and low-temperature radio frequency plasma is adopted to carry out surface modification on the PTFE membrane to obtain a modified PTFE membrane;
step S2, compounding:
taking a BOPA film as an outer film, taking a modified PTFE film as an intermediate film, taking a POE modified CPP film as an inner film, sequentially arranging the outer film, the intermediate film and the inner film from top to bottom, adding a high-viscosity adhesive and a solvent between the film layers, and performing hot-melt compounding for five times in a constant-temperature oven to form a BOPA/modified PTFE/modified CPP semi-finished product;
step S3, curing and forming:
placing the BOPA/modified PTFE/modified CPP semi-finished product into a curing chamber for curing for 48 hours to form a composite membrane;
step S4, assembling and filling port forming:
selecting HDPE material, and injection molding by an injection molding machine to assemble a filling opening;
step S5, heat sealing:
aligning and forming the composite film in a bag making machine, heating and heat-sealing through a heat-sealing cutting die, and heat-sealing an assembly filling opening as required;
step S6, bag making:
and cutting the composite film after the bag making and heat sealing into composite bags to obtain finished products.
Further, the specific steps of performing surface modification on the PTFE film by using low-temperature rf plasma in step S1 include:
step S101, cleaning and cutting a PTFE membrane into a preset size;
s102, placing the cut PTFE membrane in a reaction chamber of plasma equipment, setting the distance between polar plates to be 5cm, adjusting the air pressure in the reaction chamber to be below 2.5Pa, and introducing N2And H2；
And S103, after the air pressure in the reaction cavity is stable, discharging the PTFE membrane, wherein the discharge power is 300W, the discharge time is 6min, and obtaining the modified PTFE membrane after the discharge is finished.
Further, N is introduced2And H2When N is present2And H2The flow rates of both gases during mixing were 40 ml/min.
Further, in step S1, the non-polar agent and the lubricant are polypropylene and silicone oil, respectively.
Further, in step S2, the temperatures of the five hot-melt-compounding are 50 ℃, 60 ℃, 70 ℃, 75 ℃ and 80 ℃ in this order.
Further, in step S3, the temperature in the aging chamber is kept constant at 55 ℃.
Further, in step S5, the heat-seal temperature is 180 ℃ to 200 ℃.
Further, before step S2, printing a pattern on the BOPA film by a printer is further included.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. The manufacturing method of the high-concentration alcohol resistant composite bag is characterized by comprising the following steps:
preparing a modified PTFE membrane: the PTFE, the non-polar agent and the lubricant are mixed in a mass ratio of (80-85%): (10% -15%): (2% -4%) are uniformly mixed, the mixture is sequentially subjected to blending and flow extension to obtain a PTFE membrane, and low-temperature radio frequency plasma is adopted to carry out surface modification on the PTFE membrane to obtain a modified PTFE membrane;
compounding: taking a BOPA film as an outer film, taking the modified PTFE film as an intermediate film, taking a POE modified CPP film as an inner film, sequentially arranging the outer film, the intermediate film and the inner film from top to bottom, adding a high-viscosity adhesive and a solvent between the film layers, and performing hot-melt compounding for five times in a constant-temperature oven to form a BOPA/modified PTFE/modified CPP semi-finished product;
curing and forming: putting the BOPA/modified PTFE/modified CPP semi-finished product into a curing chamber for curing for 48 hours to form a composite film;
assembling a filling opening for forming: selecting HDPE material, and injection molding by an injection molding machine to assemble a filling opening;
performing heat sealing, namely performing alignment molding on the composite film in a bag making machine, heating and heat sealing through a heat sealing cutting die, and performing heat sealing on the assembling filling opening as required;
and (4) bag making, namely cutting the composite film subjected to bag making and heat sealing into a composite bag to obtain a finished product.
2. The method for manufacturing the high-concentration alcohol resistant composite bag according to claim 1, wherein the specific step of modifying the surface of the PTFE membrane by using the low-temperature radio frequency plasma in the step of manufacturing the modified PTFE membrane comprises:
cleaning and cutting the PTFE membrane into a preset size;
placing the cut PTFE membrane in a reaction chamber of plasma equipment, setting the distance between polar plates to be 5cm, adjusting the air pressure in the reaction chamber to be below 2.5Pa, and introducing N2And H2；
And after the air pressure in the reaction cavity is stable, discharging the PTFE membrane, wherein the discharge power is 300W, the discharge time is 6min, and obtaining the modified PTFE membrane after the discharge is finished.
3. The method for manufacturing the high concentration alcohol resistant composite bag according to claim 2, wherein N is introduced2And H2When N is present2And H2The flow rates of the two gases during mixing are both 40ml/min。
4. The method of claim 1, wherein the non-polar agent and the lubricant are polypropylene and silicone oil, respectively, in the step of forming the modified PTFE film.
5. The method for manufacturing the high-concentration alcohol resistant composite bag according to claim 1, wherein the temperature of the five times of hot-melt compounding in the step compounding is 50 ℃, 60 ℃, 70 ℃, 75 ℃ and 80 ℃ in sequence.
6. The method for manufacturing a high concentration alcohol resistant composite bag according to claim 1, wherein the temperature in the curing chamber is constant at 55 ℃ during the step of curing and forming.
7. The method of manufacturing a high concentration alcohol resistant composite bag according to claim 1, wherein the heat sealing temperature in the step of heat sealing is 180 ℃ to 200 ℃.
8. The method for making a high concentration alcohol resistant composite bag according to claims 1-7, further comprising printing a pattern on the BOPA film by a printer before the step of compounding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210062958.8A CN114228254B (en) | 2022-01-20 | 2022-01-20 | Manufacturing method of high-concentration alcohol-resistant composite bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210062958.8A CN114228254B (en) | 2022-01-20 | 2022-01-20 | Manufacturing method of high-concentration alcohol-resistant composite bag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114228254A true CN114228254A (en) | 2022-03-25 |
| CN114228254B CN114228254B (en) | 2023-08-01 |
Family
ID=80746900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210062958.8A Active CN114228254B (en) | 2022-01-20 | 2022-01-20 | Manufacturing method of high-concentration alcohol-resistant composite bag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114228254B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004339344A (en) * | 2003-05-15 | 2004-12-02 | Nitto Denko Corp | Method for producing modified polytetrafluoroethylene film |
| CN102468352A (en) * | 2010-11-01 | 2012-05-23 | 武汉美格能源科技有限公司 | High-barrier flexible back film |
| JP2013237808A (en) * | 2012-05-16 | 2013-11-28 | Sumitomo Electric Fine Polymer Inc | Micropore film made of modified polytetrafluoroethylene and method of manufacturing the same, porous resin film composite, and filter element |
| JP2014144570A (en) * | 2013-01-28 | 2014-08-14 | Unitika Ltd | Laminate for a packaging material and method for manufacturing the same as well as packaging material |
| CN106275764A (en) * | 2015-05-13 | 2017-01-04 | 湖南恒泰包装有限公司 | A kind of production technology of complex pocket |
| CN107000374A (en) * | 2014-11-12 | 2017-08-01 | 惠普印迪戈股份公司 | Flexible packages |
| JP2019217750A (en) * | 2018-06-22 | 2019-12-26 | 大日本印刷株式会社 | Carbon dioxide-absorbing sealant film, laminate and packaging bag |
| JP2020049689A (en) * | 2018-09-25 | 2020-04-02 | 藤森工業株式会社 | Manufacturing method of packaging material laminate, packaging material laminate, and package using the same |
| CN111409341A (en) * | 2020-02-21 | 2020-07-14 | 杭州路先非织造股份有限公司 | Medical mask material based on spunlace nonwoven material and preparation method thereof |
-
2022
- 2022-01-20 CN CN202210062958.8A patent/CN114228254B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004339344A (en) * | 2003-05-15 | 2004-12-02 | Nitto Denko Corp | Method for producing modified polytetrafluoroethylene film |
| CN102468352A (en) * | 2010-11-01 | 2012-05-23 | 武汉美格能源科技有限公司 | High-barrier flexible back film |
| JP2013237808A (en) * | 2012-05-16 | 2013-11-28 | Sumitomo Electric Fine Polymer Inc | Micropore film made of modified polytetrafluoroethylene and method of manufacturing the same, porous resin film composite, and filter element |
| JP2014144570A (en) * | 2013-01-28 | 2014-08-14 | Unitika Ltd | Laminate for a packaging material and method for manufacturing the same as well as packaging material |
| CN107000374A (en) * | 2014-11-12 | 2017-08-01 | 惠普印迪戈股份公司 | Flexible packages |
| CN106275764A (en) * | 2015-05-13 | 2017-01-04 | 湖南恒泰包装有限公司 | A kind of production technology of complex pocket |
| JP2019217750A (en) * | 2018-06-22 | 2019-12-26 | 大日本印刷株式会社 | Carbon dioxide-absorbing sealant film, laminate and packaging bag |
| JP2020049689A (en) * | 2018-09-25 | 2020-04-02 | 藤森工業株式会社 | Manufacturing method of packaging material laminate, packaging material laminate, and package using the same |
| CN111409341A (en) * | 2020-02-21 | 2020-07-14 | 杭州路先非织造股份有限公司 | Medical mask material based on spunlace nonwoven material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114228254B (en) | 2023-08-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2223677B1 (en) | Rubber moldings | |
| CN105121286A (en) | Light weight seal cap | |
| CN105965999B (en) | A kind of milk powder composite packing film | |
| CN103672303B (en) | Puncture-resistant vacuum insulation board and manufacturing method thereof | |
| JP4209426B2 (en) | Pre-formed composition in molded form | |
| CN105143045A (en) | Translucent seal cap | |
| US9200181B2 (en) | Frozen, lightweight curable sealant | |
| CN107745561A (en) | A kind of scissile nylon EVOH high-resistant diaphragms and its production method | |
| CN114228254A (en) | Manufacturing method of high-concentration alcohol resistant composite bag | |
| CN103434235B (en) | Composite packaging bag for beverages and production method of composite packaging bag | |
| CN110491720B (en) | Vacuum arc-extinguishing chamber and preparation method and application thereof | |
| CN109311260A (en) | Thermal insulation medium tube with the cell gasses containing HFO | |
| JP2011001087A (en) | Insulative foamed paper container | |
| EP3531004A1 (en) | Vacuum heat insulator, and heat-insulating container and heat-insulating wall in which same is used | |
| CN111469512A (en) | Food is with repeated heat-seal film and repeated heat-seal packaging film thereof | |
| CN105647106A (en) | Hollow ceramic microbead PEEK composite copper-clad plate and preparation method thereof | |
| CN106183312B (en) | Lithium battery flexible packaging gas absorption type internal layer co-extrusion film and preparation method thereof | |
| CN105856594A (en) | Method for preparing multilayer filler/fluoroether rubber composition through layering method | |
| CN114228289A (en) | Recyclable polyethylene single-material high-barrier film bag and processing technology thereof | |
| JP4512316B2 (en) | Adhesive composition | |
| CN106129279A (en) | Polymer Li-ion battery flexible package internal layer co-extrusion film and preparation method thereof | |
| CN105365235A (en) | Process for modifying flow casting polypropylene film with plasma | |
| CN208052410U (en) | A kind of polymer foaming molding machine | |
| CN110667215A (en) | Novel ultralow-temperature PE (polyethylene) membrane and preparation method thereof | |
| CN115847979A (en) | Water vapor barrier film and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Tan Songjie Inventor after: Yan Chengcheng Inventor after: You Pinfang Inventor after: Feng Jinsong Inventor before: Tan Songjie Inventor before: Yan Chengcheng Inventor before: You Binfang Inventor before: You Jinsong |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |