CN102344008B - Integrated process for producing paper-plastic compound bags by recycling waste plastics - Google Patents
Integrated process for producing paper-plastic compound bags by recycling waste plastics Download PDFInfo
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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
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Abstract
The invention discloses an integrated process for producing paper-plastic compound bags by recycling waste plastics, which comprises the following steps of: collecting waste plastics, cleaning the waste plastics with a detergent, and sorting the waste plastics; melting the waste plastics by an energy-saving motor; cooling and pelleting the obtained melt so as to obtained a pelleted material; adding a special material and a whitening agent to the pelleted material, and uniformly mixing the obtained mixture; carrying out wire drawing on the obtained mixture so as to obtain drawn wires; supporting semi-finished woven bags and semi-finished woven fabrics by using the drawn wires; combining the semi-finished woven fabrics and kraft paper by using a central-seam/side-seam combination machine; carrying out automatic edge extraction and piece-cutting to obtain a paper-plastic compound bag; and adding a lining bag into the paper-plastic compound bag so as to obtain a paper-plastic compound lined woven bag. Compared with the prior art, the integrated process for producing paper-plastic compound bags by recycling waste plastics disclosed by the invention has the advantages that: by recycling waste plastics, the production cost is reduced, and a paper-plastic compound bag prepared by using the process disclosed by the invention has the advantages of good strength, watertightness and moisture protection.
Description
Technical field
The present invention relates to the complex pocket production field, be specifically related to a kind of integral process that waste plastics is produced complex pocket that recycles.
Background technology
At present, the production technology of paper and plastics compound bag is mainly by coated method, dry type composite algorithm, wet type composite algorithm and hot melt composite algorithm.
Wherein the coated method refers to coat at film surface the material of flowing power, makes film surface form a kind of method of being close to epithelium, can improve the performances such as Thermoadhesive, moisture resistance, gas-insulated property, ultraviolet-absorbing and antistatic behaviour of film.For example, for Thermoadhesive and the gas-insulated property that improves stretched polypropene film (OPP), apply vinylidene resin solution and make it dry, adopt exactly this method.
The dry type composite algorithm also makes the dry method lamination compound, its technological process is at basis film, basis film is the larger composite base layer material of intensity, coat solvent type adhesive at basis film, make through overheated drying tunnel that the solvent in the adhesives volatilizees fully on the adhesion-layer materials, compound through the pressurization of heating with second layer base material again, this compound compound between the plastic sheeting of not only being fit to, such as polypropylene and polyethylene, polyester and polyethylene, nylon and polyethylene etc. compound, also be fit to plastic sheeting and aluminium foil, compound between the paper, such as Biaxially oriented polypropylene, three layers of aluminium foil and polyethylenes are compound, glass paper, three layers of aluminium foil and polyethylenes are compound etc.The adhesives that the dry type composite algorithm adopts is to prepare with the stronger organic solvent of volatility, and its softening point temperature should not affect property of thin film, and has good bond properties, also can not peel off when heating again.This method is to produce the most frequently used method in the aluminum foil composite packaging material.Its composite material is widely used in the packing of chocolate, cigarette, medicine and cooking food.
The wet type composite algorithm also makes the wet method lamination compound, its technological process is at the water-soluble or aqueous emulsion adhesives of ground floor substrate surface coating, the ground floor base material is generally plastic sheeting, aluminium foil etc., the ground floor base material namely carries out extrusion cladding with second layer base material by set composite under moisture state, second layer substrate material is generally paper or glass paper, and then by hot drying tunnel oven dry desolventizing, two-layer base material is combined with each other.The employed adhesives of this technique mostly is take water as solvent rhythm viscose or emulsion, mainly contains polyvinyl alcohol, sodium silicate, starch, polyvinyl acetate, ethene one acetate ethylene copolymer, polypropylene acid esters, natural resin etc.Because the compound adhesive therefor of wet method has water-soluble.Therefore to have one deck at least should be paper or dry-papermaking or glass paper to its base material, and can not be soaked in water and cause distortion.
The hot melt composite algorithm is that hot-melt adhesive heating is melted into coated after the flow regime, and other films of pressure viscosity are compound to carry out immediately.Compound and the wet type compound phase ratio with dry type, its advantage are to need not hot drying tunnel drying, and recombination time is short, saves the energy, and cost is low, and solvent-free public hazards.It is compound to be applicable to paper, plastics and aluminium foil etc.Hot melt can take following three kinds of processing modes to finish multiple working: the first is that curtain stream is compound, be that hot-melt object is transported to " die head " with pump from stock chest, stitch below wide about 0.5mm, form the even curtain stream that heat is melted thing through air process, compound with base material again, can repeatedly carry out.The second is that slit die is compound, and heat is melted thing through " mouthful mould " of slit die device, is directly injected on the back flow roll, is covered with base material on the face, grasps its coating weight according to the different purposes of description of materials.The third is that roll-type is compound, and the roll coater that adopts is substantially identical with the coating machine of paper industry.
Existing Polywoven Bag is as the packaging product of other products; its quality and class have very important effect concerning the goods of packaging; it has the function of protection commodity; be to beautify, publicize commodity, realize the important means of value of the product, performance value of the product, publicity properties of product and quality.The quality of packing is directly connected to quality and the sale of product.Along with the development of global economy and the internationalization of economic trade, various countries are more and more higher to the requirement of packaging product.Comply with this kind megatrend, in recent ten years, the application on the packaging of various Polywoven Bags has had significantly growth.China is Polywoven Bag producing country the biggest in the world, and the annual increment of plastic product industry reaches 15%～20%.Along with developing rapidly of plastics industry, the plastic pollution of China also is on the rise, and various plastic refuses are found everywhere, rough estimates, about 3,000,000 tons of national annual plastic refuse, gross pollution environment.Solving plastics " white pollution " has been the major issue that environmental protection work faces.
Summary of the invention
The object of the invention is to: in order to overcome the deficiencies in the prior art, the invention provides a kind of integral process that waste plastics is produced paper and plastics compound bag that recycles, effectively reduce productive costs, solved again the problem of environmental pollution of waste plastics simultaneously.
To achieve these goals, the present invention has adopted following technical scheme:
A kind of integral process that recycles waste plastics production paper and plastics compound bag may further comprise the steps:
(1) production of half-blank woven bag: collect waste or used plastics, clean and classification, will be by plastics kind, collect the waste and old plastics of polypropylene, with the waste and old plastics of polypropylene heating and melting under 160～250 ℃ of temperature, extrude again, cut, cool off, shake screening, cyclonic separation, make the granulation material, in the granulation material, add the polypropylene virgin material, add again brightener and sun-screening agent, after mixing, carry out Wire Drawing with draw bench, the wire drawing of producing is woven into half-blank woven bag or half-blank woven cloth with circular weaving machine;
(2) production of flexible freight container: the half-blank woven cloth through suspender belt, cutting, sewing, is made flexible freight container;
(3) production of Polywoven Bag and plastic inner lining woven bag: the half-blank woven bag is cut into Polywoven Bag, Polywoven Bag mixed with inner bag through the centre joint, side seam compounding machine be processed into the plastic inner lining woven bag, described inner bag is made by aluminium foil or PE bag;
(4) production of composite plastic woven bag and compound plastic bag liner woven bag: in the half-blank woven bag, add class coating material, compound and the sewing with the cloth machine of filming with class coating material and half-blank woven bag, make composite plastic woven bag, composite plastic woven bag is mixed with inner lining bag, automatically take out after limit, the cut-parts through the centre joint, side seam compounding machine, make compound plastic bag liner woven bag;
(5) the paper composite integrated is produced: the inner half-blank woven cloth that adopts, outside refining white craft paper or the ox mulberry paper of adopting, inside and outside material is through the centre joint, side seam compounding machine, craft paper and plastic woven cloth are combined with each other, then automatically take out limit, cut-parts, make the paper compound braided bag, carry out the quality inspection packaging and warehousing, add the liner woven bag at the paper woven bag, sew up to make and make paper compound lining woven bag.
As preferably, described brightener is fluorescent whitening agent VBL.After adopting above-mentioned further preferred version, the affinity of fluorescent whitening agent VBL is good, and whitening effect is good, can make the more pale of plastic product, and is brighter.
As preferably, described sun-screening agent is zinc oxide or titanium dioxide.After adopting above-mentioned preferred version, zinc oxide can absorbing ultraviolet, avoids plastics to make ageing of plastics because of direct sunlight, has improved the service life of plastics.
As preferably, the described centre joint may further comprise the steps: half-blank woven cloth and craft paper is compound by the film-coating material heating, and enter centre joint compounding machine after compound and sew up from the middle part, print again.After adopting above-mentioned preferred version, intensity compound through coating and the paper plastic bag that centre joint machine is sewed up is stronger, and tear resistance is better.
As preferably, described side seam may further comprise the steps: half-blank woven bag and craft paper is compound by the film-coating material heating, enter the side seam compounding machine after compound, and original complex pocket both sides are taken out toward in the middle of, be formed into square side seam bag, print again.After adopting above-mentioned preferred version, intensity compound through coating and the paper plastic bag that the side seam machine is sewed up is stronger, and tear resistance is better.
As preferably, described film-coating material is polypropylene film-coating material or polyethylene film-coating material.After adopting above-mentioned preferred version, polypropylene film-coating material or polyethylene film-coating material processing characteristics are better, polypropylene film-coating material among the present invention or polyethylene film-coating material adopt low density polypropylene film-coating material or Low Density Polyethylene film-coating material, the film thermal sealing property of these film-coating materials is good, heat sealing strength is also high, has improved the combined strength bination between half-blank woven cloth and the craft paper.
As preferably, the plastic bag raw materials melt in the described step (1) adopts the granulating machine melting, and granulating machine adopts the energy-conservation motor of using.After adopting above-mentioned preferred version, technique of the present invention is more energy-conservation, has reduced energy consumption, and environmental protection is reliable.
As preferably, the wire drawing in the described step (1) is woven into the half-blank woven bag and adopts circular weaving machine to weave.After adopting above-mentioned preferred version, the half-blank woven bag that utilizes circular weaving machine to make is more smooth, and utilizes circular weaving machine to weave the time of having saved, and manpower has improved productive force and the productive output of the product that utilizes technique of the present invention.
As preferably, it is compound that described step (5) heifer paper and plastic woven cloth carry out the mode of the plastic pellet melting in the plastic woven cloth by high temperature, and described melt temperature is 250～300 ℃.
Woven bag is because of its low price, and tear resistance is good, but non-moistureproof, and intensity is not high, and dress powdered substance effect is bad; Nontoxic, easy printing that craft paper has, the advantages such as certain rigidity are arranged, but barrier is poor, mechanical strength is not high.Through the made paper and plastics compound bag of above-mentioned flow process, craft paper and PP are Woven cloth compounded, can produce high strength, anti tear, the characteristics such as certain rigidity, protection against the tide are arranged, and the paper and plastics compound bag of the various shape solid matters of suitable packing, be applicable to pack powdery, granular, sheet, lump material.Such as chemical, engineering plastics, food additives, dry powder building materials, feed addictive, meticulous mineral, nano material etc.
Compared with prior art, the integral process recycle waste plastics that recycles waste plastics production paper and plastics compound bag of the present invention has reduced productive costs, and the paper and plastics compound bag that utilizes technique of the present invention to make has good, the waterproof and dampproof advantage of intensity.
Description of drawings
Fig. 1 is the schematic flow sheet of embodiment of the invention technique.
The specific embodiment
Embodiments of the invention are specifically a kind of as shown in Figure 1 recycles the integral process that waste plastics is produced paper and plastics compound bag.
Embodiment 1
(1) production of half-blank woven bag: collect waste plastics bag and waste silk, raw material as waste or used plastics, the material of waste plastics bag and waste silk is polypropylene material in the embodiment of the invention, waste plastics and waste silk are put into washing machine to carry out, clean with clear water, and classification, transport the waste plastic bag of classification to granulation workshop, utilize and energy-conservationly with motor the plastic bag raw material is carried out melting, melt temperature is 160 ℃, melting plant adopts granulating machine, granulating machine adopts the energy-conservation motor of use, recycles extruder and extrudes, and extrudes to cool off with cold water afterwards, the cutter sweep that the plastics that obtain after will cooling off are again put into granulating machine cuts, the vibrations screening, cyclonic separation, make the granulation material, in the granulation material, add polypropylene, virgin material as a supplement, add again brightener and sun-screening agent, brightener is fluorescent whitening agent VBL, and sun-screening agent is zinc oxide, after mixing, drop in the draw bench and carry out Wire Drawing, utilize circular weaving machine to be woven into half-blank woven bag and half-blank woven cloth the wire drawing of producing;
(2) production of flexible freight container: the half-blank woven cloth through suspender belt, cutting, sewing, is made flexible freight container;
(3) production of Polywoven Bag and plastic inner lining woven bag: the half-blank woven bag is cut into Polywoven Bag, Polywoven Bag is mixed with inner bag through the centre joint, side seam compounding machine be processed into the plastic inner lining woven bag, described inner bag is made by aluminium foil;
(4) production of composite plastic woven bag and compound plastic bag liner woven bag: in the half-blank woven bag, add class coating material, smearing material is Low Density Polyethylene, compound and the sewing with the cloth machine of filming with class coating material and half-blank woven bag, make composite plastic woven bag, composite plastic woven bag is mixed with inner lining bag, automatically take out after limit, the cut-parts through the centre joint, side seam compounding machine, make compound plastic bag liner woven bag;
(5) the paper composite integrated is produced: the inner half-blank woven cloth that adopts, the outside employing made with extra care white craft paper, craft paper and plastic woven cloth are that melting is compound under 255 ℃ the condition in melt temperature, be combined with each other thereby sew up from the middle part through centre joint compounding machine again, then automatically take out limit, cut-parts, make the paper compound braided bag, carry out the quality inspection packaging and warehousing, add the liner woven bag at the paper woven bag, sew up to make and make paper compound lining woven bag.
Embodiment 2
(1) production of half-blank woven bag: collect waste plastics bag and waste silk, raw material as waste or used plastics, the material of waste plastics bag and waste silk is polypropylene material in the embodiment of the invention, waste plastics and waste silk are put into washing machine to carry out, clean with clear water, and classification, transport the waste plastic bag of classification to granulation workshop, utilize and energy-conservationly with motor the plastic bag raw material is carried out melting, melt temperature is 210 ℃, melting plant adopts granulating machine, granulating machine adopts the energy-conservation motor of use, recycles extruder and extrudes, and extrudes to cool off with cold water afterwards, the cutter sweep that the plastics that obtain after will cooling off are again put into granulating machine cuts, the vibrations screening, cyclonic separation, make the granulation material, in the granulation material, add polypropylene, virgin material as a supplement, add again brightener and sun-screening agent, brightener is fluorescent whitening agent VBL, and sun-screening agent is zinc oxide, after mixing, drop in the draw bench and carry out Wire Drawing, utilize circular weaving machine to be woven into half-blank woven bag and half-blank woven cloth the wire drawing of producing;
(2) production of flexible freight container: the half-blank woven cloth through suspender belt, cutting, sewing, is made flexible freight container;
(3) production of Polywoven Bag and plastic inner lining woven bag: the half-blank woven bag is cut into Polywoven Bag, Polywoven Bag is mixed with inner bag through the centre joint, side seam compounding machine be processed into the plastic inner lining woven bag, described inner bag is made by the PE bag;
(4) production of composite plastic woven bag and compound plastic bag liner woven bag: in the half-blank woven bag, add class coating material, smearing material is low density polypropylene, compound and the sewing with the cloth machine of filming with class coating material and half-blank woven bag, make composite plastic woven bag, composite plastic woven bag is mixed with inner lining bag, automatically take out after limit, the cut-parts through centre joint compounding machine and side seam compounding machine, make compound plastic bag liner woven bag;
(5) the paper composite integrated is produced: the inner half-blank woven cloth that adopts, the outside employing made with extra care ox mulberry paper, ox mulberry paper and plastic woven cloth are that melting is compound under 268 ℃ the condition in melt temperature, sew up through the side seam compounding machine again, half-blank woven bag and craft paper is compound by the film-coating material heating, enter the side seam compounding machine after compound, original complex pocket both sides are taken out toward in the middle of, be formed into square side seam bag, then automatically take out the limit, the paper compound braided bag is made in cut-parts, carries out the quality inspection packaging and warehousing, add the liner woven bag at the paper woven bag, sew up to make and make paper compound lining woven bag.
Embodiment 3
(1) production of half-blank woven bag: collect waste plastics bag and waste silk, raw material as waste or used plastics, the material of waste plastics bag and waste silk is polypropylene material in the embodiment of the invention, waste plastics and waste silk are put into washing machine to carry out, clean with clear water, and classification, transport the waste plastic bag of classification to granulation workshop, utilize and energy-conservationly with motor the plastic bag raw material is carried out melting, melt temperature is 245 ℃, melting plant adopts granulating machine, granulating machine adopts the energy-conservation motor of use, recycles extruder and extrudes, and extrudes to cool off with cold water afterwards, the cutter sweep that the plastics that obtain after will cooling off are again put into granulating machine cuts, the vibrations screening, cyclonic separation, make the granulation material, in the granulation material, add polypropylene, virgin material as a supplement, add again brightener and sun-screening agent, brightener is fluorescent whitening agent VBL, and sun-screening agent is zinc oxide, after mixing, drop in the draw bench and carry out Wire Drawing, utilize circular weaving machine to be woven into half-blank woven bag and half-blank woven cloth the wire drawing of producing;
(2) production of flexible freight container: the half-blank woven cloth through suspender belt, cutting, sewing, is made flexible freight container;
(3) production of Polywoven Bag and plastic inner lining woven bag: the half-blank woven bag is cut into Polywoven Bag, Polywoven Bag is mixed with inner bag through the centre joint, side seam compounding machine be processed into the plastic inner lining woven bag, described inner bag is made by aluminium foil;
(4) production of composite plastic woven bag and compound plastic bag liner woven bag: in the half-blank woven bag, add class coating material, smearing material is Low Density Polyethylene, compound and the sewing with the cloth machine of filming with class coating material and half-blank woven bag, make composite plastic woven bag, composite plastic woven bag is mixed with inner lining bag, automatically take out after limit, the cut-parts through the centre joint, side seam compounding machine, make compound plastic bag liner woven bag;
(5) the paper composite integrated is produced: the inner half-blank woven cloth that adopts, the outside employing made with extra care white craft paper, craft paper and plastic woven cloth are that melting is compound under 297 ℃ the condition in melt temperature, be combined with each other thereby sew up from the middle part through centre joint compounding machine again, then automatically take out limit, cut-parts, make the paper compound braided bag, carry out the quality inspection packaging and warehousing, add the liner woven bag at the paper woven bag, sew up to make and make paper compound lining woven bag.
The integral process that recycles waste plastics production paper and plastics compound bag of the present invention utilizes waste plastics as raw material, realized the recycling of waste or used plastics, simultaneously, complex pocket among the present invention utilizes film-coating material that craft paper and plastic woven cloth are combined with each other, carry out again the centre joint or side seam, craft paper and plastic woven cloth are combined with each other securely, compare with the paper and plastics compound bag that orthodox method makes, improved intensity.
Above foundation is that desirable embodiment of the present invention is enlightenment, by above-mentioned description, the relevant staff fully can be in the scope that does not depart from the technology of the present invention thought, carry out various change and modification, technical scope of the present invention is not limited to the content on the specification sheets, must determine its technical scope according to the claim scope.
Claims (9)
1. one kind recycles the integral process that waste plastics is produced paper and plastics compound bag, it is characterized in that may further comprise the steps:
(1) production of half-blank woven bag: collect waste or used plastics, clean and classification, will be by plastics kind, collect the waste and old plastics of polypropylene, with the waste and old plastics of polypropylene heating and melting under 160～250 ℃ of temperature, extrude again, cut, cool off, shake screening, cyclonic separation, make the granulation material, in the granulation material, add the polypropylene virgin material, add again brightener and sun-screening agent, after mixing, carry out Wire Drawing with draw bench, the wire drawing of producing is woven into half-blank woven bag or half-blank woven cloth with circular weaving machine;
(2) production of flexible freight container: the half-blank woven cloth through suspender belt, cutting, sewing, is made flexible freight container;
(3) production of Polywoven Bag and plastic inner lining woven bag: the half-blank woven bag is cut into Polywoven Bag, Polywoven Bag mixed with inner bag through the centre joint, side seam compounding machine be processed into the plastic inner lining woven bag, described inner bag is made by aluminium foil or PE bag;
(4) production of composite plastic woven bag and compound plastic bag liner woven bag: in the half-blank woven bag, add class coating material, compound and the sewing with the cloth machine of filming with class coating material and half-blank woven bag, make composite plastic woven bag, composite plastic woven bag is mixed with inner lining bag, automatically take out after limit, the cut-parts through the centre joint, side seam compounding machine, make compound plastic bag liner woven bag;
(5) the paper composite integrated is produced: the inner half-blank woven cloth that adopts, outside refining white craft paper or the ox mulberry paper of adopting, inside and outside material is through the centre joint, side seam compounding machine, craft paper and plastic woven cloth are combined with each other, then automatically take out limit, cut-parts, make the paper compound braided bag, carry out the quality inspection packaging and warehousing, add the liner woven bag at the paper woven bag, sew up to make and make paper compound lining woven bag.
2. according to claim 1ly recycle the integral process that waste plastics is produced paper and plastics compound bag, it is characterized in that: described brightener is fluorescent whitening agent VBL.
3. according to claim 1ly recycle the integral process that waste plastics is produced paper and plastics compound bag, it is characterized in that: described sun-screening agent is zinc oxide or titanium dioxide.
4. according to claim 1ly recycle the integral process that waste plastics is produced paper and plastics compound bag, it is characterized in that: the described centre joint may further comprise the steps: half-blank woven cloth and craft paper is compound by the film-coating material heating, enter centre joint compounding machine after compound and sew up from the middle part, print again.
5. according to claim 1ly recycle the integral process that waste plastics is produced paper and plastics compound bag, it is characterized in that: described side seam may further comprise the steps: half-blank woven bag and craft paper is compound by the film-coating material heating, enter the side seam compounding machine after compound, original complex pocket both sides are taken out toward in the middle of, be formed into square side seam bag, print again.
6. according to claim 4 or 5 describedly recycle the integral process that waste plastics is produced paper and plastics compound bag, it is characterized in that: described film-coating material is polypropylene film-coating material or polyethylene film-coating material.
7. the integral process that recycles waste plastics production paper and plastics compound bag according to claim 1 is characterized in that: the plastic bag raw materials melt employing granulating machine melting in the described step (1), the energy-conservation motor of using of granulating machine employing.
8. according to claim 1ly recycle the integral process that waste plastics is produced paper and plastics compound bag, it is characterized in that: the wire drawing in the described step (1) is woven into the half-blank woven bag and adopts circular weaving machine to weave.
9. according to claim 1ly recycle the integral process that waste plastics is produced paper and plastics compound bag, it is characterized in that: it is compound that described step (5) heifer paper and plastic woven cloth carry out the mode of the plastic pellet melting in the plastic woven cloth by high temperature, and described melt temperature is 250～300 ℃.
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| CN2011102803472A CN102344008B (en) | 2011-09-20 | 2011-09-20 | Integrated process for producing paper-plastic compound bags by recycling waste plastics |
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| CN103014986A (en) * | 2012-12-31 | 2013-04-03 | 铜陵市双峰塑料有限责任公司 | Method for manufacturing flexible freight bag |
| CN104071482A (en) * | 2014-06-09 | 2014-10-01 | 浙江高联包装制品有限公司 | Method for producing container bag by using ribbon-like filaments |
| CN104909035B (en) * | 2015-06-01 | 2018-03-23 | 铜陵方正塑业科技有限公司 | Renewable paper and plastics compound bag and preparation method thereof |
| CN106256706B (en) * | 2015-06-19 | 2019-03-08 | 常州斯开龙包装机械有限公司 | Paper-plastic stick woven bag and its production technology |
| CN105397937A (en) * | 2015-12-01 | 2016-03-16 | 潜山县恒源塑业有限责任公司 | Method for recycling waste plastic woven bags and leftover materials thereof |
| CN109790724B (en) * | 2016-10-31 | 2021-05-25 | 卡特拉尔花园和家得宝公司 | Automatic manufacturing system for artificial hedge and method for manufacturing artificial hedge |
| CN106956442B (en) * | 2017-03-30 | 2019-04-19 | 盐城宏德塑业有限公司 | A kind of production technology of plastic packaging bag |
| CN108676221A (en) * | 2018-03-21 | 2018-10-19 | 桐庐益诚包装有限公司 | A kind of wear-resistant, aging, water proofing property recycle bag and preparation method |
| CN110605870A (en) * | 2019-09-05 | 2019-12-24 | 成都三川复合材料有限公司 | Ton bag lug connection mode |
| CN115819821A (en) * | 2022-12-27 | 2023-03-21 | 浙江新浪包装有限公司 | Heat-resistant environment-friendly plastic woven bag and preparation process thereof |
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| CN2160626Y (en) * | 1993-07-11 | 1994-04-06 | 齐鲁乙烯塑编厂股份有限公司 | Microporous composite paper and plastic bag |
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Effective date of registration: 20170525 Address after: Town Pingyang County Zhejiang city in Wenzhou province Xiao 325000 national highway 104 Patentee after: Wenzhou Chenguang Group Co., Ltd. Address before: 325000 Pingyang County Zhejiang province Wenzhou City Xiaojiang Town Industrial Park (Changxin River Road) Patentee before: Wenzhou Chenguang Group Chenliang Plastic Co.,Ltd. |
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Application publication date: 20120208 Assignee: Wenzhou Zhiye Packaging Co.,Ltd. Assignor: WENZHOU CHENGUANG GROUP Co.,Ltd. Contract record no.: X2021330000281 Denomination of invention: An integrated process for producing paper plastic composite bags by recycling waste plastics Granted publication date: 20130424 License type: Common License Record date: 20210909 |