CN112778686A - Antibacterial TPE door seal for refrigerator cabinet and preparation method thereof - Google Patents
Antibacterial TPE door seal for refrigerator cabinet and preparation method thereof Download PDFInfo
- Publication number
- CN112778686A CN112778686A CN202011626682.9A CN202011626682A CN112778686A CN 112778686 A CN112778686 A CN 112778686A CN 202011626682 A CN202011626682 A CN 202011626682A CN 112778686 A CN112778686 A CN 112778686A
- Authority
- CN
- China
- Prior art keywords
- door seal
- tpe
- antibacterial
- polyethylene
- refrigerator
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
- C08L53/025—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes modified
-
- 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
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention discloses an antibacterial TPE door seal for a refrigerator cabinet and a preparation method thereof, and relates to the technical field of refrigerator cabinets. The invention comprises the following raw materials in parts by weight: 25% -40% of styrene elastomer; 3% -10% of polyethylene; 10% -15% of polypropylene; 2% -5% of an antibacterial agent; 16% -35% of filling oil; 10-20% of inorganic filler; 2% -5% of a lubricating system; the antibacterial agent is polyhexamethylene guanidine, and the molecular formula is (C7H16N3Cl) N. According to the invention, the antibacterial agent polyhexamethylene guanidine is added into the formula, and the antibacterial TPE door seal is obtained by processing through proportion adjustment, so that the door seal can achieve a long-term antibacterial effect; the problem of current refrigerator door strip of paper used for sealing long-term antibiotic stability poor to and the inefficiency of disinfecting is solved.
Description
Technical Field
The invention belongs to the technical field of refrigerator cabinets, and particularly relates to an antibacterial TPE door seal for a refrigerator cabinet and a preparation method thereof.
Background
The refrigerator cabinet is an essential household appliance for daily families, and mainly provides the functions of refreshing and freezing substances such as food, and the like, the refrigerator cabinet is sealed by attracting a door and a box body through a door seal, the door seal material in the refrigerator cabinet industry at present is mainly a PVC (polyvinyl chloride) material, but the PVC material has poor low-temperature performance, and a plasticizer is easy to migrate out after long-term use; under the long-term use condition of a user, the PVC door seal can be hardened, the low-temperature effect is increasingly poor, the refrigerating effect of the refrigerator cabinet is influenced, and the energy consumption of the refrigerator cabinet is greatly improved; in recent years, door seals (thermoplastic elastomers) made of TPE materials, which have high elasticity and strength of rubber at normal temperature and are high molecular materials that can be plasticized like thermoplastic resin at high temperature, have been on the market to solve the problem of PVC door seals. The door strip of paper used for sealing of TPE material has solved the PVC door strip of paper used for sealing the poor problem of performance for a long time, but because also have a plasticizing agent in the TPE door strip of paper used for sealing prescription, and plasticizing agent is the nutrient substance of bacterium and mould, consequently can not avoid the door strip of paper used for sealing to be corroded by bacterium and mould and produce the phenomenon of going mildy, has not only influenced the outward appearance of door strip of paper used for sealing, has also increased the rotten risk of food in the refrigerator cabinet, and then has influenced user's eating security. .
Common antibacterial agents used in plastics in the industry are inorganic antibacterial agents, organic antibacterial agents and natural antibacterial agents; the inorganic antibacterial agent is mainly the antibacterial agent type represented by metals such as silver, copper and the like, in particular to a silver ion antibacterial agent which has a dominant role in inorganic antibacterial; the organic antibacterial agent is mainly micromolecular organic matter such as imidazoles, thiazoles, quaternary ammonium salts and the like; the natural antibacterial agent is mainly extracted from natural plants, such as chitin, mustard, castor oil, horseradish, etc.; however, these types of antibacterial agents have their own disadvantages in plastic applications, such as incompatibility between silver ion antibacterial agents and plastic particles, environmental protection limit requirements, and the like, easy precipitation of small organic molecule antibacterial agents, poor long-term stability, poor heat resistance of natural antibacterial agents, low sterilization efficiency, and the like. Based on the situation, the development of the long-acting antibacterial TPE door seal has great manufacturing influence and great significance on health and safety.
Disclosure of Invention
The invention aims to provide an antibacterial TPE door seal for a refrigerator cabinet, which is prepared by adding an antibacterial agent polyhexamethylene guanidine into a formula, and adjusting the proportion, so that the door seal can achieve a long-term antibacterial effect; the problem of current refrigerator door strip of paper used for sealing long-term antibiotic stability poor to and the inefficiency of disinfecting is solved.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention relates to an antibacterial TPE door seal for a refrigerator cabinet, which comprises the following raw materials in parts by weight: 25% -40% of styrene elastomer; 3% -10% of polyethylene; 10% -15% of polypropylene; 2% -5% of an antibacterial agent; 16% -35% of filling oil; 10-20% of inorganic filler; 2% -5% of a lubricating system; the antibacterial agent is polyhexamethylene guanidine, and the molecular formula is (C7H16N3Cl) N.
Further, the crystallinity of the polyethylene is 80% to 90%.
Further, the extender oil is Anhui oil or white oil.
Further, the inorganic filler is one of calcium carbonate, talcum powder and barium sulfate.
Further, the lubricating system is polyethylene wax or oleamide.
A preparation method of an antibacterial TPE door seal for a refrigerator cabinet comprises the following steps:
the method comprises the following steps: adding the styrene elastomer and the filling oil into a mixer according to the formula amount, mixing and uniformly stirring, then adding the polyethylene, the polypropylene, the antibacterial agent and the inorganic filler according to the formula amount step by step, and uniformly mixing to obtain a powder mixture;
step two: granulating the powdery mixture to obtain TPE granules, adding the TPE granules into door seal extrusion equipment, and extruding at 160-175 ℃ to obtain a formed wind shielding strip;
step three: and (3) pulling, cooling, cutting, welding and the like the formed wind strip on a door seal production line to obtain the TPE door seal for the refrigerator cabinet.
The invention has the following beneficial effects:
according to the invention, the antibacterial agent polyhexamethylene guanidine is added into the formula, and the antibacterial TPE door seal is obtained through proportion adjustment, so that the door seal can achieve a long-term antibacterial effect, and the situations of poor long-term antibacterial stability and low sterilization efficiency of the existing refrigerator door seal are avoided. Meanwhile, the antibacterial TPE door seal strip also meets the material performance requirements of the existing door seal strip, and the use reliability is ensured.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention relates to an antibacterial TPE door seal for refrigerator cabinets and a preparation method thereof, wherein the TPE material formula mainly comprises styrene elastomers, antibacterial agents, polyethylene, polypropylene, filling oil, inorganic fillers and other auxiliary agents, wherein the styrene elastomers are styrene-butadiene-styrene block copolymers (SBS), isoprene substituted butadiene block styrene polymers (SIS), hydrogenated styrene-butadiene block copolymers (SEBS) or polystyrene-polyethylene propylene-polystyrene (SEPS); the polyethylene is a thermoplastic resin prepared by polymerizing ethylene, and in the embodiment, high-density polyethylene is selected, and the crystallinity is 80% -90%; polypropylene is a thermoplastic resin prepared by polymerizing propylene, and has a molecular weight of 8 to 15 ten thousand; the purpose of the inorganic filler is to keep the elasticity and the formability of the door seal; the antibacterial agent is an environment-friendly high-molecular polymer disinfectant, namely polyhexamethylene guanidine, the molecular formula is (C7H16N3Cl) N, the effective concentration is low, the sterilization effect is good, and the action speed is high; the property is stable and the decomposition temperature is as high as 340 ℃; long-term bacteriostasis, no side effect and no corrosiveness; other additives comprise pigments, processing aids, stabilizers, coupling agents and the like, the pigments are used for adjusting the color of the door seal, and the pigments can be titanium dioxide pigments.
Preferably, the extender oil is Anhui oil or white oil.
Preferably, the inorganic filler is one of calcium carbonate, talc and barium sulfate.
Preferably, the lubricating system is a polyethylene wax or an oleamide.
Example one
The formula of each raw material is as follows: 90g of styrene elastomer, 20g of polyethylene, 36g of polypropylene, 10g of polyhexamethylene guanidine, 80g of white oil, 55g of calcium carbonate, 6g of lubricant and titanium pigment are taken.
The raw materials comprise the following components in parts by weight: 25% -40% of styrene elastomer; 3% -10% of polyethylene; 10% -15% of polypropylene; 2% -5% of an antibacterial agent; 16% -35% of filling oil; 10-20% of inorganic filler; 2% -5% of a lubricating system;
a preparation method of an antibacterial TPE door seal for a refrigerator cabinet comprises the following steps:
the method comprises the following steps: adding the styrene elastomer and the filling oil into a mixer according to the formula amount, mixing and stirring for 10-15 minutes to ensure that the materials are uniform, then adding the polyethylene, the polypropylene, the antibacterial agent and the inorganic filler according to the formula amount step by step, continuously stirring for 10 minutes, discharging, and uniformly mixing to obtain a powder mixture;
step two: granulating the powdery mixture to obtain TPE granules, adding the TPE granules into door seal strip extrusion equipment, and extruding at 160-175 ℃ to obtain a formed wind shielding strip, wherein the extrusion equipment adopts a special double-screw extruder for common soft plastics;
step three: and (3) pulling, cooling, cutting, welding and the like the formed wind strip on a door seal production line to obtain the TPE door seal for the refrigerator cabinet.
Example two
The formula of each raw material is as follows: taking 15g of polyethylene, 40g of polypropylene, 12g of polyhexamethylene guanidine, 70g of Anhui oil, 65g of calcium carbonate, 6g of lubricant and titanium pigment.
A method for preparing an antibacterial TPE door seal for a refrigerator cabinet, which is the same as embodiment one.
EXAMPLE III
The formula of each raw material is as follows: 100g of styrene elastomer, 20g of polyethylene, 30g of polypropylene, 15g of polyhexamethylene guanidine, 62g of Anhui oil, 70g of talcum powder, 8g of lubricant and titanium pigment are taken.
A method for preparing an antibacterial TPE door seal for a refrigerator cabinet, which is the same as embodiment one.
Comparative example
The formula of each raw material is as follows: 100g of styrene elastomer, 20g of polyethylene, 30g of polypropylene, 62g of Anhui oil, 70g of talcum powder, 8g of lubricant and titanium pigment are taken.
A method for preparing an antibacterial TPE door seal for a refrigerator cabinet, which is the same as embodiment one.
The evaluation method comprises the following steps:
the main performances of the TPE sealing strips obtained in examples one to three and the comparative example were tested, and the specific data are shown in table 1. Wherein, the mechanical property test comprises a density test (according to the national standard GB1033), a Shore hardness test (according to the national standard GB2411), a tensile strength test (according to the national standard GB1040), an elongation at break test (according to the national standard GB1040), and a hardness change rate test (according to the national standard GB 2411); the antibacterial and mildewproof test is in accordance with the GB21551.2-2010 test standard.
Table 1 comparative table of properties:
| test results | Example one | Example two | EXAMPLE III | Comparative example |
| Density (g/cm)3) | 0.92 | 0.94 | 0.96 | 0.96 |
| Shore hardness (ShoreA) | 65 | 68 | 72 | 72 |
| Tensile Strength (MPa) | 9.04 | 9.10 | 9.16 | 9.15 |
| Elongation at Break (%) | 625 | 624 | 635 | 634 |
| Hardness Change Rate (%) | 6.0 | 6.0 | 6.1 | 6.1 |
| Antibacterial ratio (%) | 99.3 | 99.6 | 99.9 | 20 |
| Mildew resistance rating | Level 0 | Level 0 | Level 0 | 4 stage |
The mildew resistance rating is as follows:
and (4) conclusion: the results of the first to third embodiments show that the TPE door seal of the present invention has good antibacterial and mildewproof properties, the antibacterial rate is above 99%, and the mildewproof level is 0.
Meanwhile, the data in table 1 show that the main mechanical properties of the door seal do not change greatly in the door seal and the comparative example of the first to third raw material formulas with the antibacterial agent.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (6)
1. The utility model provides an antibiotic TPE door strip of paper used for refrigerator cabinet which characterized in that: the raw materials comprise the following components in parts by weight: 25% -40% of styrene elastomer; 3% -10% of polyethylene; 10% -15% of polypropylene; 2% -5% of an antibacterial agent; 16% -35% of filling oil; 10-20% of inorganic filler; 2% -5% of a lubricating system;
the antibacterial agent is polyhexamethylene guanidine, and the molecular formula is (C7H16N3Cl) N.
2. The antimicrobial TPE door seal for refrigerators and freezers in accordance with claim 1, wherein the polyethylene has a crystallinity of 80-90%.
3. The antimicrobial TPE door seal for refrigerators and freezers in accordance with claim 1, wherein the oil filling is Anhui oil or white oil.
4. The antimicrobial TPE door seal for refrigerator and freezer as claimed in claim 1, wherein the inorganic filler is one of calcium carbonate, talc and barium sulfate.
5. An antimicrobial TPE door seal for refrigerators and freezers in accordance with claim 1 wherein the lubricating system is polyethylene wax or oleamide.
6. A method for preparing the antibacterial TPE door seal for the refrigerator and the freezer as claimed in any one of claims 1 to 5, which comprises the following steps:
the method comprises the following steps: adding the styrene elastomer and the filling oil into a mixer according to the formula amount, mixing and uniformly stirring, then adding the polyethylene, the polypropylene, the antibacterial agent and the inorganic filler according to the formula amount step by step, and uniformly mixing to obtain a powder mixture;
step two: granulating the powdery mixture to obtain TPE granules, adding the TPE granules into door seal extrusion equipment, and extruding at 160-175 ℃ to obtain a formed wind shielding strip;
step three: and (3) pulling, cooling, cutting, welding and the like the formed wind strip on a door seal production line to obtain the TPE door seal for the refrigerator cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011626682.9A CN112778686A (en) | 2020-12-30 | 2020-12-30 | Antibacterial TPE door seal for refrigerator cabinet and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011626682.9A CN112778686A (en) | 2020-12-30 | 2020-12-30 | Antibacterial TPE door seal for refrigerator cabinet and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112778686A true CN112778686A (en) | 2021-05-11 |
Family
ID=75754551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011626682.9A Pending CN112778686A (en) | 2020-12-30 | 2020-12-30 | Antibacterial TPE door seal for refrigerator cabinet and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112778686A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117264360A (en) * | 2023-09-15 | 2023-12-22 | 苏州创扬新材料科技股份有限公司 | Medical antibacterial thermoplastic elastomer and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000017141A (en) * | 1998-07-03 | 2000-01-18 | Riken Vinyl Industry Co Ltd | Thermoplastic elastomer composition and its production |
| CN104650478A (en) * | 2013-11-20 | 2015-05-27 | 江阴市南方造粒厂有限公司 | Refrigerator sealing strip capable of removing smell and preventing bacterial contamination |
| CN104774417A (en) * | 2015-03-17 | 2015-07-15 | 宁波日樱电器有限公司 | Refrigerator sealing strip material and preparation method thereof |
| CN109942975A (en) * | 2019-03-04 | 2019-06-28 | 合肥华凌股份有限公司 | Gasket and its feedstock composition, production method |
| CN111393765A (en) * | 2020-04-23 | 2020-07-10 | 长虹美菱股份有限公司 | Antibacterial PVC door seal for refrigerator and preparation method thereof |
-
2020
- 2020-12-30 CN CN202011626682.9A patent/CN112778686A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000017141A (en) * | 1998-07-03 | 2000-01-18 | Riken Vinyl Industry Co Ltd | Thermoplastic elastomer composition and its production |
| CN104650478A (en) * | 2013-11-20 | 2015-05-27 | 江阴市南方造粒厂有限公司 | Refrigerator sealing strip capable of removing smell and preventing bacterial contamination |
| CN104774417A (en) * | 2015-03-17 | 2015-07-15 | 宁波日樱电器有限公司 | Refrigerator sealing strip material and preparation method thereof |
| CN109942975A (en) * | 2019-03-04 | 2019-06-28 | 合肥华凌股份有限公司 | Gasket and its feedstock composition, production method |
| CN111393765A (en) * | 2020-04-23 | 2020-07-10 | 长虹美菱股份有限公司 | Antibacterial PVC door seal for refrigerator and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117264360A (en) * | 2023-09-15 | 2023-12-22 | 苏州创扬新材料科技股份有限公司 | Medical antibacterial thermoplastic elastomer and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103524917B (en) | A kind of refrigerator PVC sealing strip composition | |
| CN102372893B (en) | Styrenic thermoplastic elastomer composition and preparation method thereof | |
| CN101747581A (en) | Thermoplastic elastomer composition | |
| CN102863711A (en) | Heat-resisting PVC high impact-resisting tubular product and preparation method thereof | |
| CN104448476B (en) | High polymer quaternary ammonium salt antibacterial tube and preparation method thereof | |
| CN107501837A (en) | A kind of thermoplastic elastomer foaming gasket its preparation method | |
| CN112778686A (en) | Antibacterial TPE door seal for refrigerator cabinet and preparation method thereof | |
| CN105542365A (en) | Modified PVA composite packaging film and preparation method thereof | |
| CN108795064A (en) | A kind of thermoplastic elastomer (TPE) refrigerator door seal strip material and preparation method | |
| CN102924809B (en) | Polypropylene composite material, its preparation method and application | |
| CN110527261A (en) | A kind of high barrier Biodegradable film and the preparation method and application thereof | |
| CN106496856A (en) | Micro-foaming material and preparation method thereof and refrigeration plant | |
| CN111393765A (en) | Antibacterial PVC door seal for refrigerator and preparation method thereof | |
| CN106117704A (en) | A kind of high-performance environment-friendly dense plastic materials packaging bag and preparation method thereof | |
| CN106380687A (en) | Low-temperature-resistant polypropylene film material | |
| CN104140582A (en) | Non-starchy light-and bio-degradable plastic transparent master batch and preparation method thereof | |
| CN106832527A (en) | A kind of refuse bag and its preparation technology | |
| CN102181120B (en) | Polyphenyl ether elastomer composition and preparation method thereof | |
| CN105440703A (en) | Mildew-proof and antibacterial rubber and plastic sponge | |
| CN103396643A (en) | Modifier-containing polyacrylate grafted vinyl chloride composite resin composition | |
| CN109054231A (en) | A kind of antibiotic aging-resistant seal strip for refrigerator door and preparation method thereof | |
| CN107759921B (en) | A kind of preparation method of anti-mildew low temperature resistant polychloroethylene composition | |
| CN106883593A (en) | A kind of high intensity antibacterial thermoplastic elastomer (TPE) and preparation method thereof | |
| CN112391025A (en) | Antibacterial TPE door seal and preparation method thereof | |
| CN112795126A (en) | Refrigerator wind shielding strip formed by co-extrusion of two materials and manufacturing process |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210511 |
|
| RJ01 | Rejection of invention patent application after publication |