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Base paper of thin type packaging paper and preparation method thereof

A technology of paper loading and raw paper, applied in paper, papermaking, paper machines, etc., can solve the problems affecting the packaging quality of thin packaging paper, poor adhesion of punched carrier tape, poor coating of thin packaging paper, etc., and achieve stability Effects of transverse shrinkage, resistance to fine pleats and curling, and small transverse shrinkage

Active Publication Date: 2018-01-09
浙江洁美电子信息材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The sizing agent alkyl ketene dimer (AKD) used in the above base paper preparation process has the properties of wax, which has the disadvantage of making the paper surface slippery, so that the thin packaging paper processed by it has poor coating, which is easy to cause The quality accidents of poor adhesion, looseness and falling of electronic components of the punched carrier belt have great quality hidden dangers; and because of the use of high-viscosity beating, the pulping speed is lower than the net speed, and the pulp fibers are mostly arranged in the longitudinal direction. The transverse shrinkage of the paper web is relatively large, and it is easy to shrink the banner when the coating process or slitting is subjected to high temperature and longitudinal tension, resulting in fine folds and curling, which seriously affects the packaging quality of thin packaging paper

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A method for manufacturing thin packaging base paper, comprising the following steps:

[0024] (1) Mix bleached softwood pulp and bleached hardwood pulp at a ratio of 90%: 10% and send them to a medium or high consistency pulper for crushing. The pulping concentration is 8%. After crushing for 25 minutes, put Then dilute the concentration to 3.8% with clean water, and then send it to the refiner for refining. The semi-free and viscous beating method is used to disentangle, properly cut and divide the pulp fibers until the beating degree is at 45°SR, wet weight 8g, the treated slurry is put into the slurry tank for use;

[0025] (2) Put the pulp processed in step (1) into the batching tank, add 0.20% polyoxyethylene resin as pulp dispersant to 100 parts of pulp fiber; add 0.20% water-based polyurethane as water and moisture-proof agent ; Add 0.05% polyamide polyamine epichlorohydrin resin (PAE) as a wet strength agent; after mixing evenly, bring it to the pulp pool of t...

Embodiment 2

[0029] A method for manufacturing thin packaging base paper, comprising the following steps:

[0030] (1) Mix bleached softwood pulp and bleached hardwood pulp at a ratio of 85%: 15% and send them to a medium or high consistency pulper for crushing. The pulping concentration is 9%. After crushing for 25 minutes, put Then dilute the concentration to 4.0% with clean water, and then send it to the refiner for refining. The semi-free and viscous beating method is used to disentangle, properly cut and divide the pulp fibers until the beating degree is at 37°SR, wet weight 11g, the treated slurry is put into the slurry tank for use;

[0031] (2) Put the pulp processed in step (1) into the batching tank, add 0.30% polyoxyethylene resin as pulp dispersant to 100 parts of pulp fiber; add 0.30% silicone emulsion as water and moisture-proof agent; add 0.06% polyamide polyamine epichlorohydrin resin (PAE) as wet strength agent; after mixing evenly, lift it to the pulp pool of the paper m...

Embodiment 3

[0035] A method for manufacturing thin packaging base paper, comprising the following steps:

[0036] (1) Mix bleached softwood pulp and bleached hardwood pulp at a ratio of 90%:10% and send them to a medium or high consistency pulper for crushing. The pulping concentration is 10%. After crushing for 25 minutes, put Then dilute the concentration to 4.2% with clean water, and then send it to the refiner for refining. The semi-free and viscous beating method is used to disentangle the pulp fibers, cut them properly, and separate them until the beating degree is at least 39°SR, wet weight 10g, put the treated slurry into the slurry tank for use;

[0037] (2) Put the pulp processed in step (1) into the batching tank, and add 0.40% of anionic polyacrylamide resin with a molecular weight of 500,000 to 3 million as a pulp dispersant relative to 100 parts of pulp fibers; add 0.20% sodium stearate glue is used as a water and moisture-proof agent; 0.08% polyamide polyamine epichlorohyd...

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Abstract

The invention relates to base paper of thin type packaging paper and a preparation method thereof and belongs to the technical field of the thin type packaging paper used by matching with a punching type carrying belt. The preparation method comprises the following steps: (1) mixing needle-leaf wood pulp with broad-leaf wood pulp, disintegrating, putting into a coarse pulp pool, diluting with water, then pulping, and carrying out defibering and devillicating-brooming treatment on pulp fiber till the beating degree is 35-45 degree SR and the wet weight is 8-12g; (2) adding a pulp dispersing agent, a water-resistant and moisture-proof agent and a wet-strength agent and mixing uniformly; and (3) diluting, putting onto a net, forming, then carrying out pressing, drying, winding, slitting and rewinding on the formed wet paper, and then packaging. The base paper is excellent in following coating, has higher longitudinal tensile strength and lower horizontal shrinkage rate, does not produce powder in slitting, and is not easy to generate fine folds and edge rolling.

Description

technical field [0001] The invention relates to a base paper for thin packaging paper and a manufacturing method thereof, and belongs to the technical field of thin packaging paper used in conjunction with punched carrier tapes. Background technique [0002] The packaging, transportation and access of electronic components must have a corresponding carrier. At present, the carrier packaging of chip electronic components uses a punched carrier tape. First seal the bottom of the loading hole of the punched carrier tape with thin packaging paper, then put the chip components, and then seal the loading hole with the upper cover tape, and take the load while uncovering the upper cover tape during use Chip components in holes. Under normal circumstances, thin packaging paper is made of thin packaging paper base paper through coating. The base paper, such as the tissue paper for electronic component transportation disclosed in Patent No. CN105648825 A, has high longitudinal tensil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H21/08D21H21/20D21F11/00
Inventor 姜兆宏李秋芳
Owner 浙江洁美电子信息材料有限公司
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