Highly transparent chemical-resistant blow-molded laminate container leaching few impurity particles

Abstract

The present invention is a chemical-resistant blow-molded laminate container that, in order from the inside to the outside of the container, is laminated from an inner layer one (a fluorine resin thatdoes not have an adhesive functional group and has a heating loss of 0.20 mass% or less), an inner layer two (a fluorine resin that has an adhesive functional group and a heating loss of 0.40 mass% or less), a barrier / adhesive resin layer (a polyamide that does not contain additives), an adhesive layer (an anhydrous-maleic-acid-modified polyolefin resin), a barrier layer (an ethylene vinyl alcohol copolymer resin), and an outer layer one (an ultra-high-molecular-weight high-density polyethylene resin that includes an anhydrous-maleic-acid-modified polyolefin resin and has an ultraviolet transmittance of 1% or less). Each layer is transparent. The quantity (number / mL) of impurity particles leached by the container after 30 days of storage at 23 DEG C and 40 DEG C is 5 or less and 10 or less, respectively. The container has excellent ultraviolet-blocking properties and oxygen-barrier properties, leaches few impurity particles, and has the visibility of a transparent glass bottle.

Description

technical field [0001] The present invention relates to a chemical-resistant blow-molded laminated container having excellent transparency and a small amount of eluted impurity particles. Molded laminated container: Excellent chemical resistance and mechanical strength, for example, the amount of elution of impurity particles into medicines or spices stored at 40°C for 30 days (number / ml) is less than 10, which is very small, that is, clean Blowmolding laminated containers with high density have visibility comparable to that of transparent glass bottles in which the stored storage liquid can be visually confirmed from the outside, and also have excellent ultraviolet shielding properties and oxygen barrier properties, and can be used as ultra-high Purity chemical container. Background technique [0002] Generally, containers made of chemical-resistant plastics such as glass containers or airtight bottles (commercially available fragrance containers) or metal containers coate...

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Problems solved by technology

[0026] However, the high-purity chemical liquid container of Patent Document 4 has the following problem: According to the conventional measurement method, the cleanliness is less than 100 pieces / ml, but the cleanliness cannot be less than 5 pieces / ml

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