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Cover tape raw paper, manufacturing method of cover tape raw paper and cover tape

A technology for cover tape and raw materials, applied in papermaking, packaging paper, paper coating, etc., can solve the problems of cumbersome process of applying antistatic agent, increase cost, not environmental protection, etc., to improve the quality of cover tape, improve thickness uniformity, simplify The effect of the production process

Active Publication Date: 2017-03-08
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

[0004] The purpose of the present invention is to solve the problems of glue leakage and delamination in the existing cover tape, cumbersome antistatic agent coating process, increased cost, and environmental protection, and provide a cover tape base paper that can replace the base material of the cover tape , the quality of the finished cover tape is more stable, no need to remove static electricity, the process is simplified, and it is more environmentally friendly

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment １

[0032] A cover tape base paper, comprising a surface layer, a bottom layer and an intermediate layer between the surface layer and the bottom layer, the surface layer and the bottom layer are polymer resin layers, and the bottom layer is a polymer resin layer, The raw materials of the surface layer and the bottom layer are the same, 50wt% of modified polyvinyl alcohol, 45wt% of modified polyacrylamide and 5wt% of zirconium carbonate ammonium are used. The raw material of the middle layer is long-fiber wood pulp and auxiliary material, and described auxiliary material comprises 0.5% auxiliary material one that accounts for described long-fiber wood pulp weight and the auxiliary material two that accounts for 0.5% of described long-fiber wood pulp weight, and described auxiliary material one is Low molecular weight polyacrylamide resin; the second auxiliary material is rosin resin anion-dispersed rosin gum or cationic rosin gum. In this embodiment, anion-dispersed rosin gum is us...

Embodiment 2

[0041] A cover tape base paper, comprising a surface layer, a bottom layer and an intermediate layer between the surface layer and the bottom layer, the surface layer and the bottom layer are polymer resin layers, and the bottom layer is a polymer resin layer, The raw materials of the surface layer and the bottom layer are the same, using 65wt% of modified polyvinyl alcohol, 32wt% of modified polyacrylamide and 3wt% of zirconium carbonate ammonium. The raw material of the middle layer is long-fiber wood pulp and auxiliary material, and described auxiliary material comprises 0.01% auxiliary material one that accounts for described long-fiber wood pulp weight and the auxiliary material two that accounts for 1.0% of described long-fiber wood pulp weight, and described auxiliary material one is Low-molecular-weight polyacrylamide resin and wet-strength resin are mixed at a mass ratio of 1:1; the second auxiliary material is rosin-based resin anion-dispersed rosin gum or cationic ro...

Embodiment 3

[0050] A cover tape base paper, comprising a surface layer, a bottom layer and an intermediate layer between the surface layer and the bottom layer, the surface layer and the bottom layer are polymer resin layers, and the bottom layer is a polymer resin layer, The raw materials of the surface layer and the bottom layer are the same, using 55wt% of modified polyvinyl alcohol, 40wt% of modified polyacrylamide and 5wt% of zirconium carbonate amine. The raw material of the middle layer is long-fiber wood pulp and auxiliary material, and described auxiliary material comprises 0.03% auxiliary material one that accounts for described long-fiber wood pulp weight and the auxiliary material two that accounts for 0.5% of described long-fiber wood pulp weight, and described auxiliary material one is Polyvinyl alcohol resin; the second auxiliary material is rosin-based resin anion-dispersed rosin gum or cationic rosin gum, and this embodiment uses anion-dispersed rosin gum.

[0051] A prep...

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Abstract

The invention discloses cover tape raw paper, a manufacturing method of the cover tape raw paper and a cover tape. The cover tape raw paper comprises a surface layer, a bottom surface layer and a middle layer located between the surface layer and the bottom surface layer, wherein the surface layer is a high molecular resin layer; a raw material of the middle layer is long-fiber wood pulp; the bottom surface layer is a high molecular resin layer. The cover tape raw paper disclosed by the invention has the following advantages that 1, the tensile strength and brightness of the raw paper are guaranteed by using bleached long-fiber wood pulp with high strength; 2, the transverse shrinkage rate of the raw paper under a high-temperature condition is reduced through adding an auxiliary material into the middle long-fiber wood pulp layer and the uniformity of wood pulp fibers is improved; 3, the transparency of the raw paper is improved through improving the beating degree of paper pulp and the tightness of the raw paper; 4, the thickness uniformity of the raw paper is improved by adopting a relatively low net application concentration and the auxiliary material and the thickness tolerance is reduced.

Description

technical field [0001] The invention relates to the field of packaging of electronic components, in particular to a base paper used in a cover tape used in conjunction with a carrier tape and a preparation method for the base paper of the cover tape. Background technique [0002] The packaging, transportation and access of electronic components must have corresponding carriers. At present, the packaging of chip electronic components is to cut the cardboard and punch out the loading hole, seal the bottom of the loading hole with the back cover tape, and then Put in chip components, then seal the loading hole with a cover tape, and take out the chip components in the loading hole while peeling off the cover tape during use. [0003] The cover tapes on the market now use polyester film (PET film) as the base material and generally include multi-layer structures such as antistatic layer, polyester film layer, anchoring agent (adhesive) layer, bonding resin layer, and hot melt ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H27/10D21H19/84D21H19/14D21H19/20
CPCD21H19/14D21H19/20D21H19/84D21H27/10
Inventor 姜兆宏
Owner 浙江洁美电子信息材料有限公司
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