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Method for preparing wrapping paper from pineapple leaf fibers and banana caulo pulp

A technology of pineapple leaf fiber and banana pseudostem, applied in the directions of wrapping paper, wrapping paper, transportation and packaging, etc., can solve the problems of unsuitability and environmental harm.

Inactive Publication Date: 2019-01-01
SHENZHEN POLYTECHNIC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent CN200910114078.5 also discloses a papermaking method using banana stems, leaves, and fruit stalks as raw materials; in addition, 201110050550.0 discloses a pollution-free papermaking method using banana stems, but the above processes basically use alkali or acid disposal methods, which are harmful to the environment
The mulch film prepared by the material and method is an agricultural mulch film, which is not suitable as a paper product for packaging

Method used

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  • Method for preparing wrapping paper from pineapple leaf fibers and banana caulo pulp
  • Method for preparing wrapping paper from pineapple leaf fibers and banana caulo pulp
  • Method for preparing wrapping paper from pineapple leaf fibers and banana caulo pulp

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Embodiment 1. The preparation of pineapple leaf raw hemp

[0053] Preparation:

[0054] Choose the long pineapple leaf that length is 80-90cm, carry out beating fiber in pineapple leaf crude fiber extraction machine, dry naturally to obtain slender fiber, such as figure 1 .

Embodiment 2

[0055] Embodiment 2. pineapple leaf fiber degumming process

[0056] Process route one (biochemical combined degumming):

[0057] Step flow: strains→cultivation→production of bacteria→bacteria degumming→refining→rinsing acid→oiling→deoiling→flushing→drying→refined pineapple leaf fiber

[0058] Implementation steps: pick a single colony of crude fiber-degrading bacteria into LB liquid medium, and culture it on a shaker at 50° C. for 24 hours (the number of effective viable bacteria is ≥ 2×10 10 cfu / g). The strains were added to the raw hemp and treated in an environment of 50°C for 180min. Then carry out pickling, the sulfuric acid concentration is 1.5g / L, the bath ratio is 1:20, and the pickling time at room temperature is 5min. The next step of oiling: the bath ratio to crude oil is 1:10, the oiling temperature is 100°C, and the oiling time is 30 minutes. Wash it with water, fluff it manually, and dry it in an oven at 85°C. Finally, refined pineapple leaf fiber is obtaine...

Embodiment 3

[0067] Embodiment 3 adopts biological enzyme method to process the condition screening of banana pseudostem

[0068] According to experience in the banana pretreatment experiment in the literature, it is known that the amount of enzyme used is 140wU / g and the concentration of cellulase is 0.2mg / ml. Therefore, the amount of cellulase contained in every liter of reaction solution is:

[0069] 140wU / g×0.2mg / ml=140wU / g×0.2g / L=28wU / L

[0070] Now use the new cellulase, the activity unit is 4wU / g. If the enzyme activity is 28wU / L, 42wU / L, 56wU / L, 70wU / L, 84wU / L, 98wU / L, 112wU / L, 126wU / L for the experiment, a cellulase quality of 4wU / g is required They are 3.5g, 5.25g, 7g, 8.75g, 10.5g, 12.25g, 14g, 15.75g respectively. At the same time, the enzyme dosage of 56wU / L was used for one more set of parallel experiments at 4°C.

[0071] The total mass of raw materials for all parallel experiments was 2000 g. The amount of water added is 50000ml, the boiling time is 1h, and the reactio...

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Abstract

The invention discloses a method for preparing composite wrapping paper from pineapple leaf fibers and banana caulo pulp. The method comprises the following steps: separately preparing the pineapple leaf fibers and the banana caulo pulp at first; and then mixing the pineapple leaf fibers and the banana caulo pulp according to a ratio of 1: 50 to 1: 100 to prepare the composite paper. During preparation of the refined pineapple leaf fibers, a combined ultrasonic wave-biological enzyme process is preferred for degumming, so high efficiency and low environmental influence are realized. The invention also discloses a process for preparing the composite paper by braiding the pineapple leaf fibers into a grid which is used as a keel and then mixing the keel with the banana caulo pulp. The prepared paper has high strength, and the environmental protection, physical property detection and antibacterial effect detection results of the paper can meet requirements on packaging paper bags.

Description

technical field [0001] The invention relates to a process for preparing composite paper. Background technique [0002] Existing papermaking materials are mainly trees, straw, and waste paper reprocessed. The production process is accompanied by the discharge of a large amount of sewage and waste. As people pay more and more attention to environmental issues, researchers have begun to invest in the research of green and environmentally friendly papermaking technology. , in recent years, waste crops have attracted extensive attention as a new type of papermaking raw material. [0003] Banana plants are large perennial herbaceous plants with petiole and leaf sheaths, generally cylindrical, dry-like pseudostems. Commercially grown banana plants bloom and bear fruit and then leaves, leaf stems and pseudostems start to die and need to be removed, resulting in a large amount of agricultural waste; banana pseudostems contain a lot of fiber, which has a lower lignin content than woo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): D21H27/10D21F11/00
CPCD21F11/00D21H27/10
Inventor 王妍刘莉萍何利思
Owner SHENZHEN POLYTECHNIC
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