Polyolefin Resin Modifier Composition for Anti-Fogging Heat Seals
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Solution Overview
Problem
Conventional modifying agents for polyolefin resin either require time for antifogging effects to appear or adversely affect heat sealability when increased in amount.
Innovation Solution
A modifying agent for polyolefin resin comprising a specific ester compound and nonionic surfactant in a defined mass ratio, along with an organic sulfonic acid salt, to enhance antifogging properties without compromising heat sealability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional modifying agents are used to improve antifogging properties, then antifogging effect is achieved, but heat sealability is adversely affected
Solution Approach 1:
The patent applies parameter changes by precisely controlling the mass ratio of ester compound to nonionic surfactant within 10/90 to 30/70, and controlling the total content of these components to be 0.01 to 5 parts by mass per 100 parts of polyolefin resin. This optimized parameter range achieves antifogging properties while maintaining heat sealability, resolving the contradiction between these two properties.
Solution Approach 2:
The patent uses a composite modifying agent system comprising both ester compounds and nonionic surfactants in specific ratios, rather than relying on a single type of additive. This composite approach synergistically improves antifogging properties while the controlled total content ensures heat sealability is maintained, thus resolving the technical contradiction.
2Object-affected harmful factors
If the amount of modifying agent is increased to improve antifogging effect, then antifogging performance is enhanced, but heat sealability deteriorates
Solution Approach 1:
The patent establishes optimal parameter ranges: the mass ratio of ester compound to nonionic surfactant is controlled at 10/90 to 30/70, and the total content is limited to 0.01 to 5 parts by mass per 100 parts of polyolefin resin. These parameter optimizations enable enhanced antifogging performance while preserving heat sealability, directly resolving the contradiction.
3Object-affected harmful factors
If modifying agents are added to reduce static electricity, then antistatic properties are improved, but stickiness increases over time
Solution Approach 1:
The patent controls the total content of ester compounds and nonionic surfactants within 0.01 to 5 parts by mass per 100 parts of polyolefin resin, and specifies the mass ratio between them. This precise parameter control achieves improved antistatic properties while preventing excessive stickiness, resolving the contradiction between these two properties.
Data Source
AI summary
Provided is, for example, a modifier that is for a polyolefin resin and that can provide excellent anti-fogging properties to the polyolefin resin without adversely affecting the inherent heat-sealing properties of the polyolefin resin. The modifier for a polyolefin resin according to the present invention is characterized by containing an ester compound and a nonionic surfactant, wherein the mass ratio (ester compound)/(nonionic surfactant) of the contained amount of the ester compound with respect to the contained amount of the nonionic surfactant is 10/90-30/70. The ester compound is at least one selected from the group consisting of partial esters of divalent alcohols having 2-4 carbon atoms with aliphatic monocarboxylic acids having 8-22 carbon atoms. The nonionic surfactant is at least one selected from the group consisting of partial esters of tri- to hexavalent alcohols with aliphatic monocarboxylic acids having 8-22 carbon atoms, specific ester compounds, and specific ether compounds.