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

A technology of chemical resistance and blow molding, which is applied in chemical instruments and methods, household containers, types of packaging items, etc., and can solve problems such as unreachable cleanliness

Active Publication Date: 2019-02-12
KODAMA JUSHI INDS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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...

Method used

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

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Embodiment 1

[0212] MFR is 25g / 10min, specific gravity is 1.86, melting point is 223 ℃, and heating loss is 0.16 mass % additive-free fluororesin (EP-610 manufactured by DAIKIN INDUSTRIES, LTD.) as inner layer 1, and MFR is 25g / As the inner layer 2, an additive-free fluororesin (RP-5000 manufactured by DAIKIN INDUSTRIES, LTD.) with a specific gravity of 1.74, a melting point of 195° C., and a heating loss of 0.35% by mass was used as the inner layer 2. Additive-free polyamide resin (Z4887 manufactured by Daicel-Evonik Ltd., relative viscosity: 1.87) that does not contain intentionally added additives or additives containing lubricants is used as the barrier and adhesive resin layer, and maleic anhydride is used. A modified polyolefin resin (FT71A of Japan Polyethylene Corporation) was used as an adhesive layer having a function of bonding the polyamide resin to the barrier layer, and a barrier resin (ethylene-vinyl alcohol copolymer resin F171B: KURARAY CO., LTD, saponification rate 99.99...

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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...

Claims

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Application Information

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IPC IPC(8): B65D1/02B32B27/00B32B27/30
CPCB32B27/00B32B27/30B65D1/02B32B1/02B32B7/12B32B27/08B32B27/20B32B27/32B32B27/322B32B27/34B32B2270/00B32B2307/4026B32B2307/412B32B2307/714B32B2439/00
Inventor 小林玄明松尾初夫
Owner KODAMA JUSHI INDS
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