CN102702696A - Fully degradable biomaterial and product thereof - Google Patents
Fully degradable biomaterial and product thereof Download PDFInfo
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- CN102702696A CN102702696A CN2012102046481A CN201210204648A CN102702696A CN 102702696 A CN102702696 A CN 102702696A CN 2012102046481 A CN2012102046481 A CN 2012102046481A CN 201210204648 A CN201210204648 A CN 201210204648A CN 102702696 A CN102702696 A CN 102702696A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
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Abstract
The invention relates to a fully degradable biomaterial and a thin film product thereof, and discloses the fully degradable biomaterial which consists of 75-90 percent by weight of PBAT (Poly (Butylene Adipate-co-Terephthalate)) and the balance of PLA (Poly Lactic Acid) and a thin film product prepared by taking the fully degradable biomaterial as a master batch. The fully degradable biomaterial and the thin film product thereof have the advantages of full degradability, water resistance, oil resistance, high tensile strength, high flexibility, physical and chemical properties similar to those of an LDPE (Low-Density Polyethylene) plastic thin film, single component, simple process, low energy consumption required for production and being a superior alternative for the LDPE plastic thin film.
Description
Technical field
The present invention relates to a kind of full-degradable biological material and goods thereof; Be particularly related to a kind of full-degradable biological material that obtains for the base-material blending and modifying through PBAT and PLA; Use the made film article of this high-fall rank biomaterial, and use this film article made counterdie that is used for various sanitary products, bedclothes, pet supplies, coating, outer packaging bag.
Background technology
Now, the petrochemical industry plastics have been penetrated into the human being's production various fields in life, and the annual plastics consumption in the whole world is above 1.6 hundred million tons.The Chinese plastic working of certificate TIA statistics, the discarded amount of Chinese annual plastics is above more than 300 ten thousand tons.These petrochemical industry plastics the average period of degraded in soil greater than 500 years, sneak into and cause soil compaction in the soil, even the parcel rhizome; Influence moisture content, nutrition absorption, crop failure is through landfill disposal; Groundwater quality worsens, and is seriously polluted, detects the anaerobism intestinal bacteria in the water; Soil compaction influences moisture content circulation, through burning disposal, produces a large amount of toxic and harmfuls, like sulfurous gas 、 dioxin etc., contains toxic metal in the rubbish, is converted into gaseous state after the burning, and toxicity is bigger, and produces a large amount of dust pollutions; Through recycling, collect difficulty, recovery utilization rate is low; The plastics classification difficulty of unlike material; Mix with changing food waste, medical waste, can't clean, sanitation performance causes anxiety.
Existing sanitary product, bedclothes, pet supplies, a large amount of employing with LDPE film or LDPE film+non-woven fabrics material as counterdie.LDPE is a new LDPE (film grade), is one of macromolecular material the most frequently used in the daily life.But these products are stressed disposable use mostly, instant throwing, and be again the daily life requisite, therefore cause a large amount of LDPE plastics to be treated as useless rubbish, be abandoned easily.Simultaneously, the LDPE plastics belong to nondegradable petrochemical industry plastics, can't in natural environment, degrade, and these abandoned LDPE plastics can cause serious environmental to pollute, and are the major causes of white pollution.
The prior biological degradable material; Though it is also have biodegradability, physicochemical property is relatively poor, comparatively hard; Do not have snappiness and anti sag property that existing LDPE plastics film is had; With the film that these biodegradable materials are processed, fail to reach the result of use that existing LDPE plastics film is had, influenced the further application and the popularization of these biodegradable materials.Because the prior biological degradable material is formed and proportioning is complicated, complex production process can't directly utilize existing plastic membrane blowing processing units to process, and has improved production cost.
Summary of the invention
The present invention is directed to existing sanitary product, bedclothes, pet supplies and contain the shortcoming of the LDPE plastics that can't in natural surroundings, degrade; Provide a kind of and had preferably snappiness and anti sag property, had excellent mechanical intensity, impressionability and thermotolerance; And has excellent biodegradability; The new bio degradable material that can use existing LDPE blown film processing units to process; And this biodegradable material is used to make film article, and this film article is used to make counterdie, the coating of sanitary product, bedclothes, pet supplies, the application of outer packaging bag.
For realizing above-mentioned purpose, the present invention can take following technical proposals:
Full-degradable biological material, said full-degradable biological material is made up of PBAT and PLA, and wherein, PBAT accounts for 75 wt %-90 wt %, and all the other are PLA.
As preferably, PBAT accounts for 85 wt % in the said full-degradable biological material, and all the other are PLA.
As preferably, this full-degradable biological material is processed film article.
As preferably, the thickness of said film article is 20 μ m-30 μ m, and tensile strength is 11-12.1MPa; The fracture norminal strain is 150%-156%, and dart impact is 25g, and moistened surface tension force is 38-42mN/m; Heat sealing strength is 20N/15mm-23N/15mm, can degrade fully.
As preferably, the thickness of said film article is 50 μ m-70 μ m, and tensile strength is 11-12.02MPa; The fracture norminal strain is 175%-180%, and dart impact is 25g-27g, and moistened surface tension force is 38-42mN/m; Heat sealing strength is 20N/15mm-23N/15mm, can degrade fully.
As preferably, this film article is processed sanitary towel, axillary pad, breast pad, urine trousers, mattress, the counterdie of pet pads, coating.
As preferably, this film article is processed outer packaging bag.
PBAT full name is for gathering (hexanodioic acid-terephthalic acid-butyleneglycol) ester, English Poly (Butylene Adipate Terephathalate) by name.PBAT is a kind of material with fully bio-degradable ability, belongs to thermoplastic biodegradable plastic.And have the characteristic of poly adipate succinic acid ester (PBA) and polybutylene terephthalate (PBT) concurrently, existing snappiness preferably and ductility also have physical strength and thermotolerance preferably.In addition, it also has excellent biodegradability, is one of best degradable material of application market in the present biodegradable plastic.Polylactic acid PLA is also referred to as polylactide (polylactide), belongs to polyester family.POLYACTIC ACID is the polymkeric substance that obtains for the main raw material polymerization with lactic acid, and raw material sources are raw material with corn, cassava etc. mainly fully and can regenerate.The production process of POLYACTIC ACID is pollution-free, and product can biological degradation, is implemented in the circulation of occurring in nature, is the ideal green macromolecular material.Therefore full-biodegradable material according to the invention is a base-material with PBAT, is aided with the polylactic acid PLA modification behind the corn fermentation, as the raw material of preparation Biodegradable film goods.
The present invention has significant technique effect owing to adopted above technical scheme:
Manufacture craft of the present invention is simple, and raw material is simple and easy to, and employed PBAT and PLA be common in the market raw material.The present invention only uses PBAT and two kinds of starting material of PLA, has reduced production cost and needed raw material storage space, has practiced thrift production cost.Simultaneously, film article of the present invention also has stronger degradation capability, said biodegradable material and the film article processed of biodegradable material can degraded fully in 90 days thus.
Because adopting PBAT and PLA is base-material; Made film article has snappiness and anti sag property preferably; Have excellent mechanical intensity, impressionability and thermotolerance simultaneously concurrently; Can near or reach the performance of common LDPE plastics film, can substitute existing LDPE plastic membrane product fully.
With above-mentioned film article is the made counterdie of raw material, coating, outer packaging bag, can be applied to various sanitary products, bedclothes, pet supplies, especially sanitary towel, urine trousers, disposable mattress, newborn pad, axillary pad, pet pads; Use range is wide, and its product is soft, and is not yielding; Have the similar physical strength of LDPE plastics, impressionability and thermotolerance; Have biodegradability simultaneously, can avoid the formation of white pollution in compost degraded under the physical environment after use abandons.
The film article that biodegradable material of the present invention is made; After corona treatment, can reach higher moistened surface tension force; Reach as high as 42mN/m, typing back effect stability, corona effects disappears less; Various types of printing dyestuffs are had good avidity, can be used as the stock of multiple printing dyestuff.Film article after the printing has perfect printing effect, and printing precision can reach ± 0.02mm.
Full-degradable biological material of the present invention has and has the close processing characteristics of LDPE plastics now; Therefore can on existing LDPE blown film processing units (cold inflation film manufacturing machine in the for example three-layer co-extruded upward rotation), directly process; Saved production cost, had highly application value.
Embodiment
Below in conjunction with embodiment the present invention is made further detailed description.
Embodiment 1:
With weight ratio is 75% PBAT and 25% PLA blend, is processed into the particulate state full-degradable biological material with drawing wire machine, and above-mentioned particulate state full-degradable biological material is gone up cold inflation film manufacturing machine in the rotation as the film masterbatch through three-layer co-extruded; Setting extruder temperature is 135 ℃-140 ℃, and film head temperature is 145 ℃-155 ℃, and the threeway temperature is 145 ℃-155 ℃; The blown film machined parameters is set at; Screw speed is 800rpm-1000rpm, inside and outside rolling tension force 3-4.5kg, two drawing tension 25-28kg; Cold blast engine, outer cold blast engine, interior cold blast engine rotating speed are respectively 1000rpm-1200rpm, 800rpm-1000rpm, 500rpm-800rpm; The thickness of film is 20 μ m, passes through fusion, plasticizing, supercharging, cooling, corona treatment, traction, rolling successively, and obtains said film article after finalizing the design 24 hours.This film article promptly can be used for making various sanitary products, bedclothes, pet supplies, particularly sanitary towel, axillary pad, breast pad, urine trousers, mattress, the counterdie of pet pads, coating.
Embodiment 2:
With weight ratio is 77% PBAT and 23% PLA blend, is processed into the particulate state full-degradable biological material with drawing wire machine, and above-mentioned particulate state full-degradable biological material is gone up cold inflation film manufacturing machine in the rotation as the film masterbatch through three-layer co-extruded; Setting extruder temperature is 135 ℃-140 ℃, and film head temperature is 145 ℃-155 ℃, and the threeway temperature is 145 ℃-155 ℃; The blown film machined parameters is set at; Screw speed is 800rpm-1000rpm, inside and outside rolling tension force 3-4.5kg, two drawing tension 25-28kg; Cold blast engine, outer cold blast engine, interior cold blast engine rotating speed are respectively 1000rpm-1200rpm, 800rpm-1000rpm, 500rpm-800rpm; The thickness of film is 21 μ m, passes through fusion, plasticizing, supercharging, cooling, corona treatment, traction, rolling successively, and obtains said film article after finalizing the design 24 hours.This film article promptly can be used for making various sanitary products, bedclothes, pet supplies, particularly sanitary towel, axillary pad, breast pad, urine trousers, mattress, the counterdie of pet pads, coating.
Embodiment 3:
With weight ratio is 79% PBAT and 21% PLA blend, is processed into the particulate state full-degradable biological material with drawing wire machine, and above-mentioned particulate state full-degradable biological material is gone up cold inflation film manufacturing machine in the rotation as the film masterbatch through three-layer co-extruded; Setting extruder temperature is 135 ℃-140 ℃, and film head temperature is 145 ℃-155 ℃, and the threeway temperature is 145 ℃-155 ℃; The blown film machined parameters is set at; Screw speed is 800rpm-1000rpm, inside and outside rolling tension force 4-5kg, two drawing tension 25-28kg; Cold blast engine, outer cold blast engine, interior cold blast engine rotating speed are respectively 1000rpm-1500rpm, 800rpm-1200rpm, 500rpm-800rpm; The thickness of film is 23 μ m, passes through fusion, plasticizing, supercharging, cooling, corona treatment, traction, rolling successively, and obtains said film article after finalizing the design 24 hours.This film article promptly can be used for making various sanitary products, bedclothes, pet supplies, particularly sanitary towel, axillary pad, breast pad, urine trousers, mattress, the counterdie of pet pads, coating.
Embodiment 4:
With weight ratio is 85% PBAT and 15% PLA blend, is processed into the particulate state full-degradable biological material with drawing wire machine, and above-mentioned particulate state full-degradable biological material is gone up cold inflation film manufacturing machine in the rotation as the film masterbatch through three-layer co-extruded; Setting extruder temperature is 135 ℃-140 ℃, and film head temperature is 145 ℃-155 ℃, and the threeway temperature is 145 ℃-155 ℃; The blown film machined parameters is set at; Screw speed is 80rpm-1000rpm, inside and outside rolling tension force 4-6kg, two drawing tension 25-28kg; Cold blast engine, outer cold blast engine, interior cold blast engine rotating speed are respectively 1000rpm-1500rpm, 800rpm-1200rpm, 500rpm-800rpm; The thickness of film is 25 μ m, passes through fusion, plasticizing, supercharging, cooling, corona treatment, traction, rolling successively, and obtains said film article after finalizing the design 24 hours.This film article promptly can be used for making various sanitary products, bedclothes, pet supplies, particularly sanitary towel, axillary pad, breast pad, urine trousers, mattress, the counterdie of pet pads, coating.
Embodiment 5:
With weight ratio is 87% PBAT and 13% PLA blend, is processed into the particulate state full-degradable biological material with drawing wire machine, and above-mentioned particulate state full-degradable biological material is gone up cold inflation film manufacturing machine in the rotation as the film masterbatch through three-layer co-extruded; Setting extruder temperature is 135 ℃-140 ℃, and film head temperature is 145 ℃-155 ℃, and the threeway temperature is 145 ℃-155 ℃; The blown film machined parameters is set at; Screw speed is 1000rpm-1300rpm, inside and outside rolling tension force 4-6kg, two drawing tension 23-26kg; Cold blast engine, outer cold blast engine, interior cold blast engine rotating speed are respectively 1000rpm-1500rpm, 1000rpm-1200rpm, 500rpm-800rpm; The thickness of film is 27 μ m, passes through fusion, plasticizing, supercharging, cooling, corona treatment, traction, rolling successively, and obtains said film article after finalizing the design 24 hours.This film article promptly can be used for making various sanitary products, bedclothes, pet supplies, particularly sanitary towel, axillary pad, breast pad, urine trousers, mattress, the counterdie of pet pads, coating.
Embodiment 6:
With weight ratio is 90% PBAT and 10% PLA blend, is processed into the particulate state full-degradable biological material with drawing wire machine, and above-mentioned particulate state full-degradable biological material is gone up cold inflation film manufacturing machine in the rotation as the film masterbatch through three-layer co-extruded; Setting extruder temperature is 135 ℃-140 ℃, and film head temperature is 145 ℃-155 ℃, and the threeway temperature is 145 ℃-155 ℃; The blown film machined parameters is set at; Screw speed is 1000rpm-1300rpm, inside and outside rolling tension force 5-7kg, two drawing tension 20-23kg; Cold blast engine, outer cold blast engine, interior cold blast engine rotating speed are respectively 1000rpm-1500rpm, 1000rpm-1300rpm, 500rpm-800rpm; The thickness of film is 30 μ m, passes through fusion, plasticizing, supercharging, cooling, corona treatment, traction, rolling successively, and obtains said film article after finalizing the design 24 hours.This film article promptly can be used for making various sanitary products, bedclothes, pet supplies, particularly sanitary towel, axillary pad, breast pad, urine trousers, mattress, the counterdie of pet pads, coating.
Embodiment 7:
With weight ratio is 75% PBAT and 25% PLA blend, is processed into the particulate state full-degradable biological material with drawing wire machine, and above-mentioned particulate state full-degradable biological material is gone up cold inflation film manufacturing machine in the rotation as the film masterbatch through three-layer co-extruded; Setting extruder temperature is 135 ℃-140 ℃, and film head temperature is 145 ℃-155 ℃, and the threeway temperature is 145 ℃-155 ℃; The blown film machined parameters is set at; Screw speed is 1000rpm-1300rpm, inside and outside rolling tension force 5-7kg, two drawing tension 16-20kg; Cold blast engine, outer cold blast engine, interior cold blast engine rotating speed are respectively 1000rpm-1500rpm, 1000rpm-1300rpm, 500rpm-800rpm; The thickness of film is 50 μ m, passes through fusion, plasticizing, supercharging, cooling, corona treatment, traction, rolling successively, and obtains said film article after finalizing the design 24 hours.This film article promptly can be used for making various sanitary products, the outer packaging bag of bedclothes, pet supplies, particularly sanitary towel, axillary pad, breast pad, urine trousers, mattress, pet pads.
Embodiment 8:
With weight ratio is 80% PBAT and 20% PLA blend, is processed into the particulate state full-degradable biological material with drawing wire machine, and above-mentioned particulate state full-degradable biological material is gone up cold inflation film manufacturing machine in the rotation as the film masterbatch through three-layer co-extruded; Setting extruder temperature is 135 ℃-140 ℃, and film head temperature is 145 ℃-155 ℃, and the threeway temperature is 145 ℃-155 ℃; The blown film machined parameters is set at; Screw speed is 1200rpm-1500rpm, inside and outside rolling tension force 6-8kg, two drawing tension 16-20kg; Cold blast engine, outer cold blast engine, interior cold blast engine rotating speed are respectively 1000rpm-1500rpm, 800rpm-1200rpm, 500rpm-800rpm; The thickness of film is 55 μ m, passes through fusion, plasticizing, supercharging, cooling, corona treatment, traction, rolling successively, and obtains said film article after finalizing the design 24 hours.This film article promptly can be used for making various sanitary products, the outer packaging bag of bedclothes, pet supplies, particularly sanitary towel, axillary pad, breast pad, urine trousers, mattress, pet pads.
Embodiment 9:
With weight ratio is 85% PBAT and 15% PLA blend, is processed into the particulate state full-degradable biological material with drawing wire machine, and above-mentioned particulate state full-degradable biological material is gone up cold inflation film manufacturing machine in the rotation as the film masterbatch through three-layer co-extruded; Setting extruder temperature is 135 ℃-140 ℃, and film head temperature is 145 ℃-155 ℃, and the threeway temperature is 145 ℃-155 ℃; The blown film machined parameters is set at; Screw speed is 1200rpm-1500rpm, inside and outside rolling tension force 6-8kg, two drawing tension 14-17kg; Cold blast engine, outer cold blast engine, interior cold blast engine rotating speed are respectively 1000rpm-1500rpm, 1000rpm-1500rpm, 500rpm-800rpm; The thickness of film is 65 μ m, passes through fusion, plasticizing, supercharging, cooling, corona treatment, traction, rolling successively, and obtains said film article after finalizing the design 24 hours.This film article promptly can be used for making various sanitary products, the outer packaging bag of bedclothes, pet supplies, particularly sanitary towel, axillary pad, breast pad, urine trousers, mattress, pet pads.
Embodiment 10:
With weight ratio is 90% PBAT and 10% PLA blend, is processed into the particulate state full-degradable biological material with drawing wire machine, and above-mentioned particulate state full-degradable biological material is gone up cold inflation film manufacturing machine in the rotation as the film masterbatch through three-layer co-extruded; Setting extruder temperature is 135 ℃-140 ℃, and film head temperature is 145 ℃-155 ℃, and the threeway temperature is 145 ℃-155 ℃; The blown film machined parameters is set at; Screw speed is 1000rpm-1300rpm, inside and outside rolling tension force 7-9kg, two drawing tension 12-15kg; Cold blast engine, outer cold blast engine, interior cold blast engine rotating speed are respectively 1000rpm-1500rpm, 1300rpm-1500rpm, 500rpm-800rpm; The thickness of film is 70 μ m, passes through fusion, plasticizing, supercharging, cooling, corona treatment, traction, rolling successively, and obtains said film article after finalizing the design 24 hours.This film article promptly can be used for making various sanitary products, the outer packaging bag of bedclothes, pet supplies, particularly sanitary towel, axillary pad, breast pad, urine trousers, mattress, pet pads.
In order to do a comprehensive evaluation to snappiness, anti sag property, physical strength, impressionability, thermotolerance and the biological degradability of the film article that obtained, we have carried out experiment again.
The performance test experiment:
According to following standard testing embodiment 1-10 gained full-degradable biological material and film article, and the Specifeca tion speeification of existing ldpe film:
Under composting conditions, measure the biological degradation rate of full-degradable biological material and film article, said full-degradable biological material and film article be all degradeds in 90 days;
Carry out the mensuration of film article finished product thickness according to GB/T 6672-2001;
According to the said method of QB/T 13022-1991 vertical, the transverse tensile strength of film article are measured;
According to the said method of GB/T 10004-2008 vertical, the cross break norminal strain of film article are measured;
According to the said method of GB/T 9639.1-2008 film article being carried out dart impact measures;
According to the said method of GB/T 14216-2008 the moistened surface tension force of film article is measured;
Film article is carried out the mensuration of heat sealing strength according to the said method of QB/T 2358-1998.
Above-mentioned performance test experiment gained Specifeca tion speeification is as shown in the table.
| Sequence number * | The PBAT:PLA weight ratio | Thickness (μ m) | Complete degradation time (my god) | Tensile strength (Mpa) | Fracture norminal strain (%) | Dart impact (g) | Moistened surface tension force (mN/m) | Heat sealing strength (N/15mm) |
| 1 | 75%：25% | 20 | 90 | 11.00 | 150 | 25 | 42 | 22 |
| 2 | 77%：23% | 21 | 90 | 11.29 | 153 | 25 | 42 | 22 |
| 3 | 79%：21% | 23 | 90 | 11.46 | 153 | 25 | 42 | 22 |
| 4 | 85%：15% | 25 | 89 | 12.10 | 156 | 25 | 42 | 23 |
| 5 | 87%：13% | 27 | 88 | 11.89 | 155 | 25 | 42 | 23 |
| 6 | 90%：10% | 30 | 89 | 11.80 | 155 | 25 | 42 | 22 |
| 7 | 75%：25% | 50 | 90 | 11.68 | 175 | 25 | 42 | 23 |
| 8 | 80%：20% | 55 | 90 | 11.79 | 178 | 25 | 42 | 23 |
| 9 | 85%：15% | 65 | 89 | 12.02 | 180 | 25 | 42 | 23 |
| 10 | 90%：10% | 70 | 89 | 11.71 | 178 | 25 | 42 | 22 |
| 11** | -- | 25 | -- | 12 | 160 | 25 | 42 | 23 |
| 12** | -- | 60 | -- | 12 | 180 | 25 | 42 | 23 |
* the corresponding successively embodiment 1-10 of sequence number 1-10.
* experiment material therefor is existing LDPE plastics film.
Table 1: the Specifeca tion speeification table of full-degradable biological material of the present invention and film article thereof
Can know by table 1; Contained full-degradable biological material of embodiment 1-10 and film article thereof have and similar snappiness of existing LDPE plastics film and anti sag property, similarly physical strength; Impressionability and thermotolerance, but have the unexistent biodegradability of existing LDPE plastics film simultaneously again.Further, through arduous and complicated experiment, and checking times without number, we find that the weight ratio as PBAT and PLA is 85%:15%, the film article of this moment has the best snappiness and anti sag property, mechanical property and thermotolerance.
With the made film article of above-mentioned full-biodegradable material is various sanitary towels, urine trousers, disposable mattress, breast pad, the counterdie of axillary pad, coating, the outer packaging bag that raw material is processed.Have with existing be the made counterdie of raw material, coating, outer packaging bag institute similar performance with the LDPE plastics film, comprise snappiness, anti sag property, physical strength, impressionability and thermotolerance.In use, the difference of the made counterdie of almost imperceptible above-mentioned two kinds of materials, coating, outer packaging bag.Therefore, full-biodegradable material of the present invention can be used as the substitute of existing LDPE plastics fully.
In a word, the above is merely preferred embodiment of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to the covering scope of patent of the present invention.
Claims (7)
1. a full-degradable biological material is characterized in that, said full-degradable biological material is made up of PBAT and PLA, and wherein, PBAT accounts for 75 wt %-90 wt %, and all the other are PLA.
2. full-degradable biological material according to claim 1 is characterized in that, PBAT accounts for 85 wt % in the said full-degradable biological material, and all the other are PLA.
3. like claim 1,2 described full-degradable biological materials, it is characterized in that, this full-degradable biological material is processed film article.
4. full-degradable biological material according to claim 3 is characterized in that, the thickness of said film article is 20 μ m-30 μ m; Tensile strength is 11-12.1MPa; The fracture norminal strain is 150%-156%, and dart impact is 25g, and moistened surface tension force is 38-42mN/m; Heat sealing strength is 20N/15mm-23N/15mm, can degrade fully.
5. full-degradable biological material according to claim 3 is characterized in that, the thickness of said film article is 50 μ m-70 μ m; Tensile strength is 11-12.02MPa; The fracture norminal strain is 175%-180%, and dart impact is 25g-27g, and moistened surface tension force is 38-42mN/m; Heat sealing strength is 20N/15mm-23N/15mm, can degrade fully.
6. like the said film article of claim 4, it is characterized in that, this film article is processed sanitary towel, axillary pad, breast pad, urine trousers, mattress, the counterdie of pet pads, coating.
7. like the said film article of claim 5, it is characterized in that, this film article is processed outer packaging bag.
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| CN105232230A (en) * | 2015-10-14 | 2016-01-13 | 嘉兴润之缘养生文化有限公司 | Polylactic acid fiber sanitary napkin |
| CN105416797A (en) * | 2015-12-15 | 2016-03-23 | 河南天仁生物材料研究所有限公司 | Biodegradation express delivery packaging bag and preparation technology thereof |
| CN106009564A (en) * | 2016-06-22 | 2016-10-12 | 新疆加福萨斯石油设备有限公司 | Degradable and environment-friendly anti-seepage film for oil field and preparation method of degradable environment-friendly anti-seepage film |
| CN106280307A (en) * | 2016-08-12 | 2017-01-04 | 金发科技股份有限公司 | A kind of Biodegradable polyester thin film and preparation method thereof |
| CN111055564A (en) * | 2019-11-16 | 2020-04-24 | 青岛东海包装产业有限公司 | Degradable heat sealing film for compounding and preparation method thereof |
| CN112375344A (en) * | 2020-10-21 | 2021-02-19 | 浙江华发生态科技有限公司 | Full-biodegradable blown film material and processing technology |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105232230A (en) * | 2015-10-14 | 2016-01-13 | 嘉兴润之缘养生文化有限公司 | Polylactic acid fiber sanitary napkin |
| CN105416797A (en) * | 2015-12-15 | 2016-03-23 | 河南天仁生物材料研究所有限公司 | Biodegradation express delivery packaging bag and preparation technology thereof |
| CN105416797B (en) * | 2015-12-15 | 2017-12-26 | 河南天仁生物材料研究所有限公司 | A kind of biodegradable express packaging bag and its preparation technology |
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