Base paper for carrier tape

A carrier tape and surface layer technology, applied in special paper, paper, papermaking, etc., can solve the problems of high strength and inability to take care of the smooth surface of base paper at the same time, and achieve the effect of improving quality

Active Publication Date: 2012-07-18
ZHEJIANG JIEMEI ELECTRONICS & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above-mentioned related patents all change the quality of the base paper by changing the composition of the material, which cannot take into account the smooth surface, high strength, good softness of the middle part, less physical damage, and good resilience of the bottom surface of the base paper for the carrier tape at the same time. The proper operation of the belt and the quality of the electronic components are critical

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A carrier tape base paper, which includes a surface layer, a middle layer and a bottom layer, the tensile strength of the surface layer is 6.5 kN / m, the surface strength represented by the critical wax stick strength grade number is 16A, and the water resistance is 650s; the middle layer The softness of the paper is 100mN, and the amount of paper powder measured by the taper abrasion test method is less than 100ppm; the stiffness of the bottom layer is 25mN; the interlayer bonding strength measured by the Scott internal bond strength tester is not less than 150J / m 2 .

[0043] Above-mentioned carrier base paper is made according to the following steps:

[0044] (1) Beating: Mix the pulp raw materials for the surface layer, the middle layer and the bottom layer respectively and break them into pulp for the surface layer, pulp for the middle layer, and pulp for the bottom layer, and then beat until the degree of percussion is 42 o SR, 48 o SR, 38 o SR;

[0045] Among ...

Embodiment 2

[0051] A carrier base paper, which includes a surface layer, a middle layer and a bottom layer, the tensile strength of the surface layer is 8.5 kN / m, the surface strength represented by the critical wax stick strength grade number is 18A, and the water resistance is 600s; the middle layer The softness of the paper is 150mN, and the amount of paper powder measured by the taper abrasion test method is less than 100ppm; the stiffness of the bottom layer is 40mN; the interlayer bonding strength measured by the Scott internal bond strength tester is not less than 150J / m 2 , and the smoothness of the surface layer and bottom layer is not less than 500s.

[0052] Above-mentioned carrier base paper is made according to the following steps:

[0053] (1) Beating: Mix the pulp raw materials for the surface layer, the middle layer and the bottom layer, respectively, and break them into pulp for the surface layer, pulp for the middle layer, and pulp for the bottom layer, and then beat unt...

Embodiment 3

[0059] A kind of carrier base paper, it comprises surface layer, middle layer and bottom layer, and its surface layer is 1 layer of composite paper, quantitative is 105g / m 2 , the tensile strength is 7.5 kN / m, the surface strength represented by the critical wax rod strength grade number is 17A, and the water resistance is 650s; the middle layer is 3-layer composite paper, and the weight is 200g / m 2 , the softness is 130mN, and the amount of paper powder measured by the taper abrasion test method is less than 100ppm; the bottom layer is 1-layer composite paper, and the quantitative value is 165g / m 2 , the stiffness is 30mN; the interlayer bonding strength measured by the Scotner Bonding Strength Tester is not less than 150J / m 2 .

[0060] Above-mentioned carrier base paper is made according to the following steps:

[0061] (1) Beating: Mix the pulp materials for the surface layer, the middle layer and the bottom layer respectively and break them into pulp for the surface lay...

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Abstract

The invention discloses a base paper for a carrier tape, belonging to the technical field of paper making, which comprises a surface layer, a middle layer and a bottom layer, wherein the tensile strength of the surface layer is 6.5-8.5Kn/M, the surface strength which is expressed by a critical wax sticker strength grade is 10-13A, and the water resistance degree is not less than 600s; the softness degree of the middle layer is 100-150mN, and the generation amount of the paper, which is measured by a taper abrasion experimental method, is less than 100ppm; the deflection of the bottom layer is 25-40mn; and the bonding strength among the layers, which is measured by a Scott internal bonding strength instrument, is not less than 150J/m<2>. Compared with the prior art, the invention has the advantages that the quality of the base paper for the carrier tape is effectively improved, and the prepared paper has large strength, good waterproof and bonding performances, good resilience, and small physical damage to electronic elements, and the like.

Description

technical field [0001] The invention specifically relates to a carrier base paper. Background technique [0002] The development and wide application of electronic components has become one of the important symbols of the development level of a country's electronic industry. At present, all kinds of electronic components, including passive components, electromechanical components, audio components and composite components, are developing towards complexity, precision and miniaturization. Therefore, the corresponding carrier tapes used in the packaging, transportation, and access of electronic components are becoming more and more important to the protection of electronic components. The existing carrier tapes are usually divided into plastic carrier tapes and raw paper carrier tapes according to the materials of the carrier tapes. Among them, it is difficult to guarantee the dimensional accuracy of the plastic carrier tape, and it is difficult to eliminate the chamfer when...

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): D21H27/38D21H11/04D21H21/14D21H21/16D21H21/18B32B29/00
Inventor 方隽云
Owner ZHEJIANG JIEMEI ELECTRONICS & TECH
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