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Production process of folding and explosion-resistant copper plate card

A production process and technology for copper-plate cards, applied in the field of papermaking, can solve the problems of poor folding endurance of copper-plate cards and unsatisfactory bonding strength between layers, etc.

Pending Publication Date: 2022-05-10
SHANDONG BOHUI PAPER INDUSTRY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the copper plate card still has not overcome the technical problem of poor folding resistance, and the bonding strength between layers is not ideal.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A production process of a folding and explosion-resistant copper plate card, the specific steps are as follows:

[0032] (1) First, tapioca starch is used as raw material, and modified starch is obtained by alkali treatment, and then the modified starch is mixed with sodium hypochlorite, sodium tripolyphosphate, ethylene-vinyl acetate copolymer, and ground calcium carbonate, and then sieved to obtain coating starch;

[0033] (2) Then the mixed paper pulp is copied into shape to obtain base paper;

[0034] (3) Sizing the coated starch obtained in step (1) on the surface of the base paper, and then coating and calendering with the coating containing the coated starch to obtain the above-mentioned folding and bursting-resistant copperplate card.

[0035] In the step (1), the preparation method of the modified starch is as follows: first, fully wet the tapioca starch with a 5% sodium hydroxide solution, and then dry it.

[0036] In step (1), the mass ratio of modified sta...

Embodiment 2

[0049] A production process of a folding and explosion-resistant copper plate card, the specific steps are as follows:

[0050] (1) First, tapioca starch is used as raw material, and modified starch is obtained by alkali treatment, and then the modified starch is mixed with sodium hypochlorite, sodium tripolyphosphate, ethylene-vinyl acetate copolymer, and ground calcium carbonate, and then sieved to obtain coating starch;

[0051] (2) Then the mixed paper pulp is copied into shape to obtain base paper;

[0052] (3) Sizing the coated starch obtained in step (1) on the surface of the base paper, and then coating and calendering with the coating containing the coated starch to obtain the above-mentioned folding and bursting-resistant copperplate card.

[0053] In the step (1), the preparation method of the modified starch is as follows: first, the tapioca starch is fully wetted with a 7% sodium hydroxide solution, and then dried.

[0054] In step (1), the mass ratio of modifie...

Embodiment 3

[0067] A production process of a folding and explosion-resistant copper plate card, the specific steps are as follows:

[0068] (1) First, tapioca starch is used as raw material, and modified starch is obtained by alkali treatment, and then the modified starch is mixed with sodium hypochlorite, sodium tripolyphosphate, ethylene-vinyl acetate copolymer, and ground calcium carbonate, and then sieved to obtain coating starch;

[0069] (2) Then the mixed paper pulp is copied into shape to obtain base paper;

[0070] (3) Sizing the coated starch obtained in step (1) on the surface of the base paper, and then coating and calendering with the coating containing the coated starch to obtain the above-mentioned folding and bursting-resistant copperplate card.

[0071] In the step (1), the preparation method of the modified starch is as follows: first, the tapioca starch is fully wetted with a 6% sodium hydroxide solution, and then dried.

[0072] In step (1), the mass ratio of modifie...

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Abstract

The invention discloses a production process of a folding-and-explosion-resistant chromo board, which comprises the following steps: taking cassava starch as a raw material, carrying out alkali treatment to obtain modified starch, mixing the modified starch with sodium hypochlorite, sodium tripolyphosphate, an ethylene-vinyl acetate copolymer and ground calcium carbonate, grinding, and sieving to obtain coated starch; then carrying out papermaking molding on the mixed paper pulp to obtain raw paper; sizing is conducted on the surface of the base paper through coating starch, then coating and calendering are conducted through a coating containing the coating starch, and the folding and explosion resistant chromo board is obtained. The obtained chromo board is good in folding resistance (the folding resistance is 15 times or above) and high in interlayer bonding strength (180 J / m < 2 > or above), the paper quality is improved, and the high-standard requirement for the chromo board is met.

Description

technical field [0001] The invention relates to a production process of a folding and explosion-resistant copper plate card. It belongs to the technical field of papermaking. Background technique [0002] Copper plate card is also called printing coated paper. Coat a layer of white paint on the surface of base paper and process it through super calendering. Copper plate card has smooth surface, high whiteness, and good ink absorption performance. It is mainly used for offset printing and gravure printing with fine screen lines, such as high-end picture albums, calendars, books and periodicals, etc. The disadvantage of the copper plate card is that the powder is easy to stick and fall off after being exposed to moisture, and it cannot be stored for a long time, and its folding resistance is poor, which affects the user experience. [0003] In addition, the copper plate card is an important printing and product packaging material, and its quality directly determines the pr...

Claims

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Application Information

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IPC IPC(8): D21H27/00D21H11/00D21H19/84D21H21/16D21H19/82D21H19/40D21H19/38D21H19/62D21H19/58D21H19/54C08B31/00
CPCD21H27/00D21H11/00D21H19/84D21H21/16D21H19/82D21H19/40D21H19/385D21H19/62D21H19/58D21H19/54C08B31/00
Inventor 张涛周雪林李涛
Owner SHANDONG BOHUI PAPER INDUSTRY CO LTD
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