CN114953674A - Disposable medical liquid-storing bag film - Google Patents
Disposable medical liquid-storing bag film Download PDFInfo
- Publication number
- CN114953674A CN114953674A CN202210500119.XA CN202210500119A CN114953674A CN 114953674 A CN114953674 A CN 114953674A CN 202210500119 A CN202210500119 A CN 202210500119A CN 114953674 A CN114953674 A CN 114953674A
- Authority
- CN
- China
- Prior art keywords
- core layer
- zone
- disposable medical
- reinforcing core
- bag film
- 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
- 239000002346 layers by function Substances 0.000 claims abstract description 40
- 239000012792 core layer Substances 0.000 claims abstract description 37
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 25
- 239000007788 liquid Substances 0.000 claims abstract description 18
- 238000009825 accumulation Methods 0.000 claims abstract description 14
- 238000007731 hot pressing Methods 0.000 claims description 10
- 238000007493 shaping process Methods 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 239000000741 silica gel Substances 0.000 claims description 5
- 229910002027 silica gel Inorganic materials 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 description 10
- 239000010410 layer Substances 0.000 description 8
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 238000004049 embossing Methods 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 238000001802 infusion Methods 0.000 description 3
- 238000010030 laminating Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 241000521257 Hydrops Species 0.000 description 2
- 206010030113 Oedema Diseases 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 239000010808 liquid waste Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 239000002906 medical waste Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/69—Drainage containers not being adapted for subjection to vacuum, e.g. bags
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
- B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2250/00—Layers arrangement
- B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/31—Heat sealable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2535/00—Medical equipment, e.g. bandage, prostheses, catheter
Landscapes
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Laminated Bodies (AREA)
- Medical Preparation Storing Or Oral Administration Devices (AREA)
Abstract
The invention relates to a disposable medical liquid accumulation bag film which comprises a reinforcing core layer and functional layers arranged on two sides of the reinforcing core layer respectively, wherein the reinforcing core layer comprises 100AC and 2045G in a mass ratio of 20-30: 70-80, and the functional layers comprise 100 AC: 222 WT: EVA in a mass ratio of 20-30: 40-60. The invention has compact structure, and can ensure the heat seal strength of the liquid accumulation bag and reduce the heat seal temperature.
Description
Technical Field
The invention relates to a disposable medical hydrops bag film.
Background
During the operation, a large amount of liquid waste is generated, and the liquid waste comprises medical waste such as blood, tissue fluid and washing fluid, and needs to be specially recycled and destroyed. In the operating room, a liquid accumulation bag is usually used to store the liquid generated by the irrigation in the operation for centralized treatment.
The liquid accumulation bag is generally made of a material having high sealing properties, strength and toughness. The existing liquid accumulation bags in the market are mostly PVC liquid collection bags, and the PVC liquid collection bags are low in strength and easy to age and turn yellow.
Disclosure of Invention
The invention aims to provide a disposable medical liquid accumulation bag film which is compact in structure, can ensure the heat seal strength for manufacturing a liquid accumulation bag and can reduce the heat seal temperature.
The invention adopts the following technical scheme:
a disposable medical liquid accumulation bag film comprises a reinforcing core layer and functional layers arranged on two sides of the reinforcing core layer respectively, wherein the reinforcing core layer comprises 100AC and 2045G in a mass ratio of 20-30: 70-80, and the functional layers comprise 100 AC: 222 WT: EVA in a mass ratio of 20-30: 40-60.
Preferably, the composite material comprises a reinforcing core layer and functional layers respectively arranged on two sides of the reinforcing core layer, wherein the reinforcing core layer comprises 100AC and 2045G in a mass ratio of 25: 75, and the functional layers comprise 100 AC: 222 WT: EVA in a mass ratio of 25: 50.
Further, the EVA is VA 800.
Further, the mass per square meter is 100 g.
Furthermore, the thickness ratio of the functional layer, the reinforcing core layer and the functional layer is 20-30: 40-60: 20-30.
Preferably, the thickness ratio of the functional layer, the reinforcing core layer and the functional layer is 25: 50: 25.
Further, it is prepared by the following method:
(1) layering the reinforced core layer and the functional layers on the two sides through three distributors respectively to form a cast film;
(2) and (5) hot-pressing and shaping according to the thickness proportion.
Further, a frosted embossing roller and a nano silica gel roller are selected for hot-pressing and shaping.
The invention has the beneficial effects that: the invention is prepared by hot-pressing the cast film with a three-layer structure, the strength of the reinforced core layer is high, the puncture resistance is realized, the softening point and the melting point of the external functional layer are lower, and the heat sealing temperature is favorably reduced. The temperature of the three-layer structure of the invention during bag making and heat sealing can not affect the middle layer and the product strength. The invention has compact molecular structure, can completely block the permeation of liquid, blood, bacteria and phage, and can be widely applied to the field of disposable medical liquid accumulation bags.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely in conjunction with the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments.
Example 1
The utility model provides a disposable medical hydrops bag membrane, its includes strengthens the sandwich layer and sets up respectively strengthen the functional layer of sandwich layer both sides, strengthen the sandwich layer and be 100AC and 2045G that the mass ratio is 25: 75, the functional layer includes that the mass ratio is 100 AC: 222 WT: EVA of 25: 50, wherein, the EVA is VA 800.
The mass per square meter is 100 g. The thickness ratio of the functional layer, the reinforcing core layer and the functional layer is 25: 50: 25.
The functional layers on both sides were formulated with VA800 (available from le day, korea) having a softening point < 40 ℃ and a melting point of 69 ℃, which was not used in infusion bag products. 100AC was obtained from Exxon and 222WT was obtained from Sabourne Foundation. Meanwhile, the reinforcing core layer is made of Dow's 8-carbon linear 2045G, and the reinforcing core layer is high in strength and puncture-resistant. The Vicat softening point is 108 ℃, the melting temperature is 122 ℃, the temperature in bag making hot air cannot influence the middle layer, and the product strength cannot be influenced. The invention adopts a three-layer structure, ensures the heat and the strength of the infusion bag manufacture and simultaneously reduces the heat sealing temperature, namely, the ultra-low melting point surface layer is matched with the high melting point reinforced core layer, which is the unique process of the product.
The preparation method comprises the following steps:
(1) forming a functional layer material, a reinforced core layer material and a functional layer material into a casting film by respectively passing through a machine A, a machine B and a machine C of a laminating machine; the laminator model was SJLM-TH-Z80/125/80-2600MM, available from Xinle Huabao Plastic machinery Co., Ltd.
The temperature of the machine A is set as follows: zone 1 160 ℃, zone 2 170 ℃, zone 3 190 ℃, zone 4 200 ℃, zone 5 210 ℃ and zone 6 ℃ at 210 ℃.
The temperature of the machine B is set as follows: zone 1 160 deg.C, zone 2 180 deg.C, zone 3 200 deg.C, zone 4 210 deg.C, zone 5 220 deg.C, zone 6 deg.C, and zone 7 deg.C, 230 deg.C.
The temperature of the machine C is set as follows: zone 1 160 ℃, zone 2 170 ℃, zone 3 190 ℃, zone 4 200 ℃, zone 5 210 ℃ and zone 6 ℃ at 210 ℃.
The die temperature was set to: zone 1-13, zone 230 ℃ and distributor temperature 230 ℃.
(2) And (5) hot-pressing and shaping according to the thickness proportion. And selecting a frosted embossing roller and a nano silica gel roller for hot-pressing and shaping. The pressure of the rubber roller is 1 MPa.
Example 2
A disposable medical effusion bag film comprises a reinforced core layer and functional layers respectively arranged on two sides of the reinforced core layer. The reinforced core layer comprises 100AC and 2045G in a mass ratio of 20: 80. The functional layer comprises 100 AC: 222 WT: EVA with the mass ratio of 20: 60. Wherein the EVA is VA 800.
The mass per square meter is 100 g. The thickness ratio of the functional layer, the reinforcing core layer and the functional layer is 20: 60: 20.
The preparation method comprises the following steps:
(1) forming a functional layer material, a reinforced core layer material and a functional layer material into a casting film by respectively passing through a machine A, a machine B and a machine C of a laminating machine; the laminator model was SJLM-TH-Z80/125/80-2600MM and was purchased from Xinle Huabao Plastic machinery, Inc.
The temperature of the machine A is set as follows: zone 1 at 150 deg.C, zone 2 at 160 deg.C, zone 3 at 180 deg.C, zone 4 at 190 deg.C, zone 5 at 200 deg.C, and zone 6 at 200 deg.C.
The temperature of the machine B is set as follows: zone 1 150 ℃, zone 2 170 ℃, zone 3 190 ℃, zone 4 200 ℃, zone 5 210 ℃, zone 6 220 ℃, and zone 7 at 220 ℃.
The temperature of the machine C is set as follows: zone 1 150 ℃, zone 2 160 ℃, zone 3 180 ℃, zone 4 190 ℃, zone 5 200 ℃ and zone 6 ℃.
The die temperature was set as: zone 1-13 at 220 deg.C, and distributor temperature at 220 deg.C.
(2) And (5) hot-pressing and shaping according to the thickness proportion. And selecting a frosted embossing roller and a nano silica gel roller for hot-pressing and shaping. The pressure of the rubber roller is 2 MPa.
Example 3
A disposable medical effusion bag film comprises a reinforced core layer and functional layers respectively arranged on two sides of the reinforced core layer. The reinforcing core layer comprises 100AC and 2045G in a mass ratio of 30: 70. The functional layer comprises 100 AC: 222 WT: EVA with the mass ratio of 30: 40. Wherein the EVA is VA 800.
The mass per square meter is 100 g. The thickness ratio of the functional layer, the reinforcing core layer and the functional layer is 30: 40: 30.
The preparation method comprises the following steps:
(1) respectively forming a functional layer material, a reinforced core layer material and a functional layer material into a casting film by a machine A, a machine B and a machine C of a laminating machine; the laminator model was SJLM-TH-Z80/125/80-2600MM, available from Xinle Huabao Plastic machinery Co., Ltd.
The temperature of the machine A is set as follows: zone 1 170 deg.C, zone 2 180 deg.C, zone 3 200 deg.C, zone 4 210 deg.C, zone 5 220 deg.C, and zone 6 220 deg.C.
The temperature of the machine B is set as follows: zone 1 170 deg.C, zone 2 190 deg.C, zone 3 210 deg.C, zone 4 220 deg.C, zone 5 230 deg.C, zone 6 240 deg.C, and zone 7 deg.C.
The temperature of the machine C is set as follows: zone 1 at 170 deg.C, zone 2 at 180 deg.C, zone 3 at 200 deg.C, zone 4 at 210 deg.C, zone 5 at 220 deg.C, and zone 6 at 220 deg.C.
The die temperature was set as: zone 1 to zone 13 at 240 ℃ and the distributor temperature at 240 ℃.
(2) And (5) hot-pressing and shaping according to the thickness proportion. And selecting a frosted embossing roller and a nano silica gel roller for hot-pressing and shaping. The pressure of the rubber roller is 3 MPa.
Examples of effects
The tests carried out on the above examples 1-3 showed tensile strengths > 45N, elongations > 800%, hydrostatic pressures > 2000mmH 2 O, heat seal temperature as low as 70 ℃. Therefore, the invention has the characteristics of compact structure, good toughness, high strength and the like, is beneficial to processing due to lower heat sealing temperature, and can be widely used for manufacturing disposable medical accumulated liquid bags, infusion bags and the like.
The above description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. 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 application.
Claims (8)
1. The disposable medical liquid accumulation bag film is characterized by comprising a reinforcing core layer and functional layers arranged on two sides of the reinforcing core layer respectively, wherein the reinforcing core layer comprises 100AC and 2045G in a mass ratio of 20-30: 70-80, and the functional layers comprise 100 AC: 222 WT: EVA in a mass ratio of 20-30: 40-60.
2. The disposable medical fluid accumulation bag film as claimed in claim 1, which comprises a reinforcing core layer and functional layers respectively disposed on both sides of the reinforcing core layer, wherein the reinforcing core layer comprises 100AC and 2045G at a mass ratio of 25: 75, and the functional layers comprise 100 AC: 222 WT: EVA at a mass ratio of 25: 50.
3. The disposable medical fluid bag film of claim 1, wherein the EVA is VA 800.
4. The disposable medical fluid bag film of claim 1 having a mass of 100g per square meter.
5. The disposable medical liquid accumulation bag film as claimed in claim 1, wherein the thickness ratio of the functional layer, the reinforcing core layer and the functional layer is 20-30: 40-60: 20-30.
6. The disposable medical fluid bag film of claim 1, wherein the functional layer, the reinforcing core layer and the functional layer have a thickness ratio of 25: 50: 25.
7. A disposable medical fluid bag film according to any one of claims 1-6, prepared by a process comprising:
(1) layering the reinforced core layer and the functional layers on the two sides through three distributors respectively to form a cast film;
(2) and (5) hot-pressing and shaping according to the thickness proportion.
8. The disposable medical liquid accumulation bag film as claimed in claim 7, wherein a frosted roller and a nano silica gel roller are selected for hot press forming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210500119.XA CN114953674A (en) | 2022-05-07 | 2022-05-07 | Disposable medical liquid-storing bag film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210500119.XA CN114953674A (en) | 2022-05-07 | 2022-05-07 | Disposable medical liquid-storing bag film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114953674A true CN114953674A (en) | 2022-08-30 |
Family
ID=82980597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210500119.XA Pending CN114953674A (en) | 2022-05-07 | 2022-05-07 | Disposable medical liquid-storing bag film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114953674A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003001768A (en) * | 2001-06-22 | 2003-01-08 | Tohcello Co Ltd | Heat fusion bonding film and package comprising the same |
| CN102248735A (en) * | 2011-05-18 | 2011-11-23 | 浙江众成包装材料股份有限公司 | Polyolefin film used for packaging and preparation method thereof |
| JP2014180326A (en) * | 2013-03-18 | 2014-09-29 | Japan Polyethylene Corp | Medical bag |
| CN204914804U (en) * | 2015-08-31 | 2015-12-30 | 福州绿帆包装材料有限公司 | Medical blister pack membrane of low temperature heat -seal |
| CN105524333A (en) * | 2016-02-04 | 2016-04-27 | 四川汇利实业有限公司 | Polyethylene film with excellent heat sealing performance |
| CN113306244A (en) * | 2021-06-09 | 2021-08-27 | 浙江金仪盛世生物工程有限公司 | ULDPE-containing film material for multi-layer co-extrusion disposable bioprocess bag and preparation method thereof |
-
2022
- 2022-05-07 CN CN202210500119.XA patent/CN114953674A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003001768A (en) * | 2001-06-22 | 2003-01-08 | Tohcello Co Ltd | Heat fusion bonding film and package comprising the same |
| CN102248735A (en) * | 2011-05-18 | 2011-11-23 | 浙江众成包装材料股份有限公司 | Polyolefin film used for packaging and preparation method thereof |
| JP2014180326A (en) * | 2013-03-18 | 2014-09-29 | Japan Polyethylene Corp | Medical bag |
| CN204914804U (en) * | 2015-08-31 | 2015-12-30 | 福州绿帆包装材料有限公司 | Medical blister pack membrane of low temperature heat -seal |
| CN105524333A (en) * | 2016-02-04 | 2016-04-27 | 四川汇利实业有限公司 | Polyethylene film with excellent heat sealing performance |
| CN113306244A (en) * | 2021-06-09 | 2021-08-27 | 浙江金仪盛世生物工程有限公司 | ULDPE-containing film material for multi-layer co-extrusion disposable bioprocess bag and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 周祥兴编著: "塑料包装制品生产技术问答 常见疑难问题400例", 30 April 2002, 北京：中国轻工业出版社, pages: 224 * |
| 彭康珍等编著: "塑料建筑材料与树脂应用手册", 30 June 1990, 广州：广东科技出版社, pages: 476 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4848120B2 (en) | Breathable and elastic composite material and method for producing the same | |
| JP5294935B2 (en) | Gel mat | |
| CN101607616B (en) | High temperature resistance film for blister package of medical equipment and preparation method thereof | |
| CN207666718U (en) | A kind of special TPU compound film sheets of invisalign | |
| CN106046521B (en) | A kind of splash guard, drain bar or drainable waterproofing plate and preparation method thereof | |
| TW200401060A (en) | Composite nonwoven fabric for protective clothing and production method thereof | |
| CN105128482B (en) | Degradable low temperature resistant triple coextrusion blow laminating polyethylene film and preparation method thereof | |
| CN102975450B (en) | Three-layer co-extrusion plastic film | |
| CN114953674A (en) | Disposable medical liquid-storing bag film | |
| EP2371539A1 (en) | Packaging laminate | |
| CN101550275A (en) | Edible soy protein isolate/xylan composite film and method of producing the same | |
| CN110481124B (en) | Non-porous breathable film and preparation method and application thereof | |
| CN201418817Y (en) | Three-layer composite material | |
| CN204914804U (en) | Medical blister pack membrane of low temperature heat -seal | |
| DE19728686C1 (en) | Heat sterilizable laminated film for use in blood bags or medical pump membranes | |
| CN206621474U (en) | Air-permeable elastic punches medical bandage production line | |
| CN107187132A (en) | A kind of impermeable medical sheet composite material of high-barrier and preparation method thereof | |
| CN2528790Y (en) | Enhancement poromeric compound | |
| CN214083306U (en) | Novel medical glove | |
| CN115871302A (en) | Cast polypropylene composite film for new energy battery aluminum plastic film and preparation method | |
| CN105034504A (en) | High-barrier-property multilayer-co-extrusion packaging film | |
| CN101485613A (en) | Environment-friendly type infusion soft bag | |
| CN115284705A (en) | Medical plastic-absorption composite packaging material and preparation process thereof | |
| CN106928673A (en) | A kind of antibiotic carbon fiber/lactic acid composite material and its production and use | |
| CN102896856A (en) | Five-layer coextruded two-way stretch polypropylene polyamide barrier film and manufacturing 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 |