Resin Pellet Core-Shell Structure for Anti-Blocking
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Solution Overview
Problem
Conventional methods for producing resin pellets often result in incomplete suppression of blocking, limited storage temperature, and prolonged purge times due to low stick temperatures and detachment of anti-adhesive microparticles, leading to inefficiencies in handling and storage.
Innovation Solution
A resin pellet with a resin base material and embedded microparticles, where the surface of the resin base material is covered with microparticles having a higher softening temperature than the resin base material, forming a core-shell structure that prevents detachment and enhances anti-blocking properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If anti-adhesive powder is attached on the surface of resin pellets in a post-treatment step, then blocking is suppressed, but microparticles detach during free feeding leading to reduced anti-blocking performance
Solution Approach 1:
The patent embeds microparticles inside the resin base material rather than merely attaching them on the surface. This nested structure ensures that microparticles are permanently integrated within the pellet matrix, preventing detachment during free feeding while maintaining anti-blocking performance throughout the resin's service life
Solution Approach 2:
The microparticles are incorporated into the resin base material during the molding process itself, before the resin is extruded and pelletized. This preliminary incorporation ensures uniform distribution and permanent integration of microparticles throughout the resin structure, eliminating subsequent detachment issues
2Ease of operation
If resin pellets are stored at higher temperatures to improve handling, then storage conditions are improved, but blocking occurs due to low stick temperature
Solution Approach 1:
The patent changes the key parameter of stick temperature by incorporating microparticles with high softening points into the resin base material. This modification raises the overall stick temperature of the resin pellets, enabling storage and handling at higher temperatures without blocking, thereby improving ease of operation while maintaining blocking resistance
3Ease of manufacture
If conventional resin pellets are used with low stick temperature, then manufacturing is simpler, but purge time is prolonged reducing productivity
Solution Approach 1:
The patent modifies the stick temperature parameter of the resin by embedding microparticles with high softening points during the molding process. This parameter change enables faster purging of volatile components from the resin pellets, significantly reducing purge time and improving productivity without complicating the manufacturing process
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 solution effectively suppresses blocking at higher temperatures, reduces detachment of microparticles, and shortens purge times, improving storage and handling conditions while enhancing productivity by allowing for faster drying and molding cycles.
Implementation Method 1
heating at a predetermined temperature to embed the microparticles in the resin base material
Data Source
AI summary
A resin pellet of the present invention includes a resin base material and a plurality of microparticles embedded in the resin base material. The resin pellet is covered with the plurality of microparticles on the surface of the resin base material. According to the present invention, it is possible to prevent detachment of the microparticles to be applied on the resin base material and to effectively suppress blocking of resin pellets.