CN106674930A - Easily degradable plastic bag - Google Patents
Easily degradable plastic bag Download PDFInfo
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- CN106674930A CN106674930A CN201510754355.4A CN201510754355A CN106674930A CN 106674930 A CN106674930 A CN 106674930A CN 201510754355 A CN201510754355 A CN 201510754355A CN 106674930 A CN106674930 A CN 106674930A
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- plastic bag
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- polybag
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Abstract
The invention provides an easily degradable plastic bag. The easily degradable plastic bag comprises the following components in percentage by weight: 40-60% of film-grade polyethylene, 20-40% of film-grade polylactic acid, 1-15% of a plasticizer and 2-8% of glass fiber. The easily degradable plastic bag is produced by a plastic film blowing machine and has the advantages that the production process is simple, the plastic bag can be automatically degraded when the temperature of the environment is higher than 55 DEG C, and the abandoned polylactic acid films can be degraded in the abandoned environment.
Description
Technical field
The present invention relates to a kind of polybag, more particularly to a kind of degradable polybag.
Background technology
With polybag make polybag it is light, thin, waterproof, intensity is larger, low cost, it is a kind of good packaging material, the life that the use of polybag gives people brings great convenience, make the consumption of polybag increasing, waste plastic bag with after is not easily recycled, not degradable, and substantial amounts of waste plastic bag has become a serious problem of current contamination environment.In order to mitigate pollution of the polybag to environment, people have developed some degradable plastic bags.
Existing degradable plastic bag, its constituent has film-grade plastics and plastics can be caused to produce the component of degraded, such as starch, calcium carbonate, this degradable plastic bag is addition type degradable plastic bag, and addition type degradable plastic bag is to improve environment to have played certain positive role.But the processing performance of this degradable plastic bag processing is bad, made by plastic bag product physical property and outward appearance it is poor；In addition, the degraded of this degradable plastic bag needs certain rigid condition, and polybag it is discarded after environment, it is to be laid in the refuse disposal system of closing, it is exactly to expose to the open air in the unfixed natural environment of condition, the required rigid condition it is difficult to ensure that this polybag is degraded, these degradative plastics in most of the cases, either still can not degrade well in natural environment in refuse disposal system because of subject to conditions.In prior art, without can be in the environment after discarded, it is ensured that the degradable plastic bag of degraded.
The content of the invention
The invention aims to overcome above-mentioned deficiency, in proposing a kind of environment after discarding, it is ensured that the degradable plastic bag of degraded.
The present invention provides a kind of degradable polybag, and its constituent has by weight percentage Film grade polyethylene 40%～60%, film-grade PLA 20%～40%, plasticizer 1%～15% and glass fibre 2%～8%.
PLA (PLA) is also referred to as polylactide, belongs to polyester family, and many amyloid crops can serve as preparing the raw material of PLA, and the primary raw material of PLA is corn, so PLA is commonly called as " Corn Plastic ".PLA have most good tensile strength and extensibility, can with blowing method make film, made by film there is good glossiness and transparency, it is nontoxic to human body, be suitable to make food pack.Polylactic acid film stable performance at normal temperatures, automatic classifying is understood higher than 55 DEG C or in the presence of oxygen-enriched and microorganism in environment temperature, polylactic acid film after discarded can be by the degradable digestion of microorganism in nature, ultimately generate carbon dioxide and water, PLA is preferable complete-degradable plastic, and with film-grade PLA and Film grade polyethylene plastic blend the degradation plastic of different degradation speeds is may be made with.
The group composition of the present invention has PLA and Film grade polyethylene, due to PLA environment temperature higher than 55 DEG C or in the presence of oxygen-enriched and microorganism can automatic classifying, in environment of the polylactic acid film after discarding after discarded, can guarantee that degraded.
Specific embodiment
Presently preferred embodiments of the present invention is described in detail below, so that advantages and features of the invention can be easier to be readily appreciated by one skilled in the art, apparent is clearly defined so as to make to protection scope of the present invention.
Film grade polyethylene in the present invention can be film-grade LLDPE (LLDPE), can also be film-grade LLDPE (LLDPE) with Film grade low density polyethylene (LDPE) and use, or film-grade LLDPE (LLDPE) are used in combination with film level high-density polyethylene (HDPE).
Embodiment 1：
The present invention provides a kind of degradable polybag, first take Film grade polyethylene 40g and film-grade PLA 40g, it is added to 150 DEG C of temperature, make its mixture melting, it is being separately added into 15g plasticizer and 2g glass fibres, hot pressing 6 minutes under 35Mpa, are then blown out with plastic film blowing machine, and degradable polybag is obtained.
Embodiment 2：
The present invention provides a kind of degradable polybag, first take Film grade polyethylene 60g and film-grade PLA 35g, it is added to 150 DEG C of temperature, make its mixture melting, it is being separately added into 10g plasticizer and 5g glass fibres, hot pressing 6 minutes under 35Mpa, are then blown out with plastic film blowing machine, and degradable polybag is obtained.
Embodiment 3：
The present invention provides a kind of degradable polybag, first take Film grade polyethylene 50g and film-grade PLA 40g, it is added to 150 DEG C of temperature, make its mixture melting, it is being separately added into 3g plasticizer and 7g glass fibres, hot pressing 6 minutes under 35Mpa, are then blown out with plastic film blowing machine, and degradable polybag is obtained.
Embodiment 4：
The present invention provides a kind of degradable polybag, first take Film grade polyethylene 45g and film-grade PLA 30g, it is added to 150 DEG C of temperature, make its mixture melting, it is being separately added into 15g plasticizer and 10g glass fibres, hot pressing 6 minutes under 35Mpa, are then blown out with plastic film blowing machine, and degradable polybag is obtained.
Claims (2)
1. a kind of degradable polybag, it is characterised in that constituent has by weight percentage Film grade polyethylene 40%～60%, film-grade PLA 20%～40%, plasticizer 1%～15% and glass fibre 2%～8%.
2. a kind of degradable grog bag according to claim 1, it is characterised in that the Film grade polyethylene can be one kind or 2 kinds of mixture of film-grade LLDPE (LLDPE), Film grade low density polyethylene (LDPE) and film level high-density polyethylene (HDPE).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510754355.4A CN106674930A (en) | 2015-11-09 | 2015-11-09 | Easily degradable plastic bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510754355.4A CN106674930A (en) | 2015-11-09 | 2015-11-09 | Easily degradable plastic bag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106674930A true CN106674930A (en) | 2017-05-17 |
Family
ID=58864270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510754355.4A Pending CN106674930A (en) | 2015-11-09 | 2015-11-09 | Easily degradable plastic bag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106674930A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109181075A (en) * | 2018-09-18 | 2019-01-11 | 福建凯达集团有限公司 | Food package film and preparation method thereof, packaging pouch for microwave oven made from it |
| CN109535531A (en) * | 2018-10-08 | 2019-03-29 | 福建鸿利印刷材料工贸有限公司 | A kind of high-performance environment-friendly packaging film and preparation method thereof |
| CN111073236A (en) * | 2019-12-12 | 2020-04-28 | 顺德区均安镇苏汉玉塑料制品厂 | Preparation method of environment-friendly plastic bag |
| CN112063055A (en) * | 2020-07-30 | 2020-12-11 | 上海森韦得实业有限公司 | Preparation method of biodegradable heat-shrinkable film |
| CN112062987A (en) * | 2020-07-30 | 2020-12-11 | 上海森韦得实业有限公司 | Preparation method of biodegradable heat-shrinkable film |
-
2015
- 2015-11-09 CN CN201510754355.4A patent/CN106674930A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109181075A (en) * | 2018-09-18 | 2019-01-11 | 福建凯达集团有限公司 | Food package film and preparation method thereof, packaging pouch for microwave oven made from it |
| CN109535531A (en) * | 2018-10-08 | 2019-03-29 | 福建鸿利印刷材料工贸有限公司 | A kind of high-performance environment-friendly packaging film and preparation method thereof |
| CN111073236A (en) * | 2019-12-12 | 2020-04-28 | 顺德区均安镇苏汉玉塑料制品厂 | Preparation method of environment-friendly plastic bag |
| CN112063055A (en) * | 2020-07-30 | 2020-12-11 | 上海森韦得实业有限公司 | Preparation method of biodegradable heat-shrinkable film |
| CN112062987A (en) * | 2020-07-30 | 2020-12-11 | 上海森韦得实业有限公司 | Preparation method of biodegradable heat-shrinkable film |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170517 |
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| WD01 | Invention patent application deemed withdrawn after publication |