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Special modified starch for wrapping paper and production method thereof

A technology of modified starch and paper, which is applied in the field of corn deep processing, can solve the problems of unfavorable environmental protection, etc., and achieve the effect of increasing utilization rate, good transparency and increasing viscosity

Active Publication Date: 2012-10-17
JILIN COFCO BIOCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a special modified starch for packaging paper and its production method to solve the problem that the paper industry has been using corn starch as raw material to cook starch glue for a long time, which is not conducive to environmental protection

Method used

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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  • Special modified starch for wrapping paper and production method thereof
  • Special modified starch for wrapping paper and production method thereof
  • Special modified starch for wrapping paper and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Obtained by the following volume-mass ratio formula and method:

[0042] formula

[0043] Corn starch milk 21Be′: 2250 m 3 (equivalent to 900 Kg on a dry basis);

[0044] Sodium tripolyphosphate: 18 Kg;

[0045] Sodium trimetaphosphate: 4.5Kg;

[0046] Urea: 10.8 Kg;

[0047] Sodium hydroxide: 4.5Kg;

[0048] Sodium carbonate: 36 Kg;

[0049] Preparation:

[0050] 1. According to the formula, 21Be′ starch milk is introduced from the corn starch production line through the pipeline, poured into the pulping tank, and sodium hydroxide is added to make weakly alkaline starch milk;

[0051] 2. Add sodium tripolyphosphate, sodium trimetaphosphate, and urea according to the formula, while stirring continuously for 45 minutes at a stirring speed of 120 r / min;

[0052] 3. Centrifugal dehydration: After sodium tripolyphosphate, sodium trimetaphosphate, urea and starch are fully reacted, enter the centrifuge for dehydration at a speed of 1000 r / min, measure the water conte...

Embodiment 2

[0060] Obtained by the following volume-mass ratio formula and method:

[0061] formula

[0062] Corn starch milk 21Be′: 2500 m 3 (equivalent to dry basis 1000Kg);

[0063] Sodium tripolyphosphate: 20Kg;

[0064] Sodium trimetaphosphate: 5Kg;

[0065] Urea: 12 Kg;

[0066] Sodium hydroxide: 5Kg;

[0067] Sodium carbonate: 40 Kg;

[0068] Preparation:

[0069] 1. According to the formula, 21Be′ starch milk is introduced from the corn starch production line through the pipeline, poured into the pulping tank, and sodium hydroxide is added to make weakly alkaline starch milk;

[0070] 2. Add sodium tripolyphosphate, sodium trimetaphosphate, and urea according to the formula, and stir continuously for 50 minutes at the same time, with a stirring speed of 130r / min;

[0071] 3. Centrifugal dehydration: After sodium tripolyphosphate, sodium trimetaphosphate, urea and starch are fully reacted, enter the centrifuge for dehydration at a speed of 1200r / min, measure the water conte...

Embodiment 3

[0079] Obtained by the following volume-mass ratio formula and method:

[0080] formula

[0081] Corn starch milk 21Be′: 2750 m 3 (equivalent to dry basis 1100Kg);

[0082] Sodium tripolyphosphate: 22Kg;

[0083] Sodium trimetaphosphate: 5.5Kg;

[0084] Urea: 13.2 Kg;

[0085] Sodium hydroxide: 5.5Kg;

[0086] Sodium carbonate: 44 Kg;

[0087] Preparation:

[0088] 1. According to the formula, 21Be′ starch milk is introduced from the corn starch production line through the pipeline, poured into the pulping tank, and sodium hydroxide is added to make weakly alkaline starch milk;

[0089] 2. Add sodium tripolyphosphate, sodium trimetaphosphate, and urea according to the formula, and keep stirring for 55 minutes at the same time, and the stirring speed is 140r / min;

[0090] 3. Centrifugal dehydration: After sodium tripolyphosphate, sodium trimetaphosphate, urea and starch are fully reacted, enter the centrifuge for dehydration at a speed of 1100r / min, measure the water co...

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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Abstract

The invention provides a special modified starch for wrapping paper and a production method thereof, belonging to the filed of deep processing of maize. The special modified starch is prepared from the following components: in a volume mass ratio, 2250 m<3> to 2750 m<3> of maize starch milk 21Be' ( equivalent to 900 to 1100 Kg of a dry basis), 18 to 22 Kg of sodium tripolyphosphate, 4.5 to 5.5 Kg of sodium trimetaphosphate, 10.8 to 13.2 Kg of urea, 4.5 to 5.5 Kg of sodium hydroxide and 36 to 44 Kg of sodium carbonate. The special modified starch for wrapping paper provided in the invention has the following advantages: the special modified starch is easy to gelatinize and has a low gelatinization temperature and a short gelatinization time; gelatinized liquid has good fluidity, transparency, film forming ability and film strength; and the special modified starch has excellent bonding performance with a variety of fibers and good compatibility with other auxiliary agents.

Description

technical field [0001] The invention belongs to the field of corn deep processing, in particular to a modified starch and a production method thereof. Background technique [0002] At present, cornstarch is used as raw material to oxidize and degrade the adhesive to make the adhesive and to sizing the paper surface. It is required to use a large amount of wood pulp and partially recycled waste paper boxes as raw materials for papermaking. Due to long-term recycling, the fibers of recycled waste paper boxes are getting shorter and shorter. , the adhesion is getting worse and worse, which greatly reduces the ring pressure strength of paper. Therefore, it is necessary to increase the ring pressure strength of paper by adding a large amount of wood pulp. However, the excessive use of wood pulp will cause great damage to the ecological environment, which is not conducive to the national advocacy. environmental policy. Contents of the invention [0003] The invention provides a...

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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Patent Type & Authority Applications(China)
IPC IPC(8): C08L3/06C08K3/26C08B31/06
Inventor 吴延东王宏龄王金枝张秀荣
Owner JILIN COFCO BIOCHEM
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