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Manufacturing method for double polylactic acid (PLA) laminated paper cup

A manufacturing method and technology of coated paper, applied in the direction of cardboard articles, etc., can solve a lot of problems such as manpower and financial resources

Active Publication Date: 2018-11-06
上海馨星环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A large amount of chemical substances are easily generated during this process, accompanied by the generation of waste gas and waste liquid
The accumulation of disposable water cups / food packaging materials requires a lot of manpower and financial resources to deal with

Method used

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  • Manufacturing method for double polylactic acid (PLA) laminated paper cup

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] S1, choose 200g of pure PLA (granule) on the market, water 2000g, mix PLA (granule) with pure water, make mixed liquid;

[0033] S2. Stir the mixed liquid prepared in step S1 at a stirring speed of 45 r / min for 8-12 hours to obtain liquid 6;

[0034] S3. Pour the liquid 6 prepared in step S2 into the heating tank 1. The heating tank 1 is set in the PE rubber baffle 7. The temperature of the heating tank 1 is controlled at 200-210°C. The rubber wheel 2 stirs and rolls up a layer of PLA. The temperature of the rubber wheel 2 is controlled at 190-200°C. The comma scraper 3 set on the side of the rubber wheel 2 scrapes the PLA rolled up by the rubber wheel 2 to a thickness of 0.20 -60μ, the pressure roller 4 presses the paper until it sticks to the adhesive roller 2. At this time, the PLA rolled up by the adhesive roller 2 is coated with the paper (intermolecular connection), and finally the PLA is coated by the self-rotating wheel. Take away the paper to make PLA-coated p...

Embodiment 2

[0047] S1, choose 400g of pure PLA (granular) on the market, water 4000g, mix PLA (granular) with pure water, make mixed liquid;

[0048] S2. Stir the mixed liquid prepared in step S1 at a stirring speed of 50 r / min for 8-10 hours to obtain liquid 6;

[0049] S3. Pour the liquid 6 prepared in step S2 into the heating tank 1. The temperature of the heating tank 1 is controlled at 200-210°C. Stir and roll up a layer of PLA through the adhesive wheel 2 arranged above the heating tank 1. The temperature of the rubber wheel 2 is controlled at 190-200°C. The comma scraper 3 set on one side of the rubber wheel 2 scrapes the PLA rolled up by the rubber wheel 2 to a thickness of 0.20-60 μ, and the pressure wheel 4 presses the paper to the thickness of the back. The rubber wheel 2 is pasted together. At this time, the PLA rolled up by the rubber wheel 2 is coated with the paper (intermolecular connection), and finally the paper that has been coated with PLA is taken away by the self-rot...

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Abstract

The invention discloses a manufacturing method for a double polylactic acid (PLA) laminated paper cup. A prepared clear, transparent and sticky liquid is poured into a heating groove. The temperatureof the heating groove is controlled between 200 DEG C and 210 DEG C. Stirring is conducted through a gum application wheel arranged above the heating groove and a layer of PLA is rolled up by the gumapplication wheel. The temperature of the gum application wheel is controlled between 190 DEG C and 200 DEG C. The rolled-up layer of PLA is scraped to 0.20-0.65 Mu in thickness by a comma scraper arranged on one side of the gum application wheel. Paper is pressed to be attached to the gum application wheel by a pressing roller. At the moment, laminating (intermolecular connection) is conducted onthe PLA rolled up by the gum application wheel and the paper. Finally, the paper laminated with PLA is taken away through a rotation wheel, and paper laminated with PLA is prepared. According to themanufacturing method for the double PLA laminated paper cup, the paper laminated with PLA does not need to be dipped in a PLA solution; only the heating groove, the gum application wheel and an oven need electricity in the manufacturing technological process of the paper cup, and other parts do not need electricity; the cost is lowered greatly; the density of the paper cup is excellent; a liquid does not permeate into the inner wall of the paper cup from the outer wall of the paper cup; the production process is free of pollution; and a discarded paper cup can completely decompose into CO2 andH2O.

Description

technical field [0001] The invention relates to a method for preparing renewable raw materials from plant cellulose, in particular to a method for manufacturing double PLA coated paper cups. Background technique [0002] Pulp is processed from certain plants, and it is the basic raw material for papermaking. Plants usually used as raw materials for pulping can be divided into four categories: stem fibers, bast fibers, seed fibers and wood fibers. Among them, wood fiber is the most important. At present, my country's wood resources are far from meeting the needs of the growing pulp and paper industry. In order to make up for the shortage of raw materials, pulp products have to import a considerable amount of pulp from abroad every year. The main importing countries are the United States, Canada, and Brazil. [0003] Traditional pulping refers to the production process of using chemical methods, mechanical methods or a combination of both to dissociate plant fiber raw mater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B31D5/00
CPCB31D5/0086
Inventor 黄海峰
Owner 上海馨星环保科技有限公司
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