Multi-Layer Carrier Tape Base Paper for Electronic Components
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Solution Overview
Problem
Existing carrier-tape base papers face issues with mechanical damage, dust generation, and chemical composition affecting electronic elements, requiring a solution that balances strength, flexibility, and resilience while preventing corrosion and peeling.
Innovation Solution
A carrier-tape base paper making method involving a multi-layer structure with specific pulp compositions and auxiliary agents, including sulfate softwood and hardwood pulps, paper strength agents, waterproof agents, and thermal-fusion bonding agents, to achieve high tensile strength, water resistance, and interlayer bonding force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If base paper is used as carrier-tape material, then cost is reduced and resilience is improved, but strength is inferior and dust is generated
Solution Approach 1:
The patent uses composite pulp materials combining different types of pulp (wood pulp, bamboo pulp, straw pulp) in specific proportions to create base paper with enhanced strength while maintaining the cost advantages of paper-based materials over plastic
2Adaptability or versatility
If base paper is used as carrier-tape material, then resilience is improved, but strength is inferior and mechanical damage occurs
Solution Approach 1:
The patent applies different treatments to different layers of the base paper: the front surface layer receives special treatment with sizing agents and fillers to enhance strength and reduce dust, while the inner layers maintain high resilience for buffering
Solution Approach 2:
The patent combines multiple pulp types (wood pulp 30-70%, bamboo pulp 10-40%, straw pulp 5-20%) with adding agents (starch 1-5%, gelatin 0.5-2%, casein 0.5-2%) to create a composite material that simultaneously achieves high strength and high resilience
3Object-affected harmful factors
If multilayer papermaking structure is used to control sulfate ion content, then corrosion prevention is improved, but manufacturing complexity increases
Solution Approach 1:
The patent controls the pH value of the pulp slurry within 4.0-8.0 to prevent sulfate ion corrosion, and precisely controls the proportions of different pulp types and adding agents to achieve corrosion prevention without complex multilayer structures
4Manufacturing precision
If paper strength agent and tackifier are added to multilayer pulpwood, then moisture control is improved, but manufacturing complexity increases
Solution Approach 1:
The patent controls the moisture content of extruded wet paper to be 75-80% by adjusting the concentration of paper strength agent (1.0-8.0 parts per 100 parts pulp) and tackifier (0.1-1.0 parts per 100 parts pulp), achieving precise moisture control through chemical parameter adjustment rather than complex process control
5Reliability
If liquid coating is applied to carrier-tape surface, then thermal sealing performance is improved, but surface smoothness is reduced
Solution Approach 1:
The patent incorporates bonding agents (starch 1-5%, gelatin 0.5-2%, casein 0.5-2%) directly into the pulp slurry during papermaking, so the bonding function is built into the paper structure itself rather than added as a surface coating, maintaining surface smoothness while achieving thermal sealing capability
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method produces a high-quality base paper with improved strength, waterproof performance, and reduced physical damage, effectively preventing dust and mechanical issues, suitable for electronic components with high operational requirements.
Implementation Method 1
thermal-fusion bonding agent added to the intermediate layer... thermal-fusion bonding agent (1-3 parts by weight per 100 parts of pulp)
Data Source
AI summary
A carrier-tape base paper making method and the base paper made thereby fall into the technical field of papermaking. According to performance requirements, the base paper is made through pulp conditioning and papermaking, in which different pulping and auxiliary materials for surface, intermediate and bottom layers are added. The method includes such steps as beating, conditioning, papermaking, calendering and reeling. The carrier-tape base paper features high strength, perfect waterproof and bonding performance, limited physical damages to electronic elements and satisfactory resilience.