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A product and composition technology, applied in the field of products, can solve the problems of difficult, expensive and unfavorable precise temperature control

Active Publication Date: 2009-09-23
BOREALIS TECH OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is industrially disadvantageous because precise temperature control is difficult and expensive to implement

Method used

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Experimental program
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Effect test

Embodiment

[0094] analysis test

[0095] The values ​​quoted in the description / examples are determined according to the following test:

[0096] • Melt flow rate (MFR) is measured according to the method of ISO1133 and expressed as g / 10min. MFR is an indication of the melt viscosity of a polymer. The MFR of PP is measured at 230°C. The load when determining melt flow rate is usually expressed as a footnote, such as MFR 2 is measured under a load of 2.16kg, MFR 5 is measured under a load of 5kg, MFR 21 It was measured under a load of 21.6 kg.

[0097] ●The density is measured according to the method of ISO 1183 / D.

[0098] The comonomer content is based on the well-known 13 C NMR calibrated FTIR measurement method determination.

[0099]• Weight average molecular weight Mw and molecular weight distribution (MWD=Mw / Mn, where Mn is number average molecular weight and Mw is weight average molecular weight) were measured by a method based on ISO 16014-4:2003. Using 1,2,4-trichlorobe...

Embodiment 1

[0127] Example 1 - Injection stretch blow molding polypropylene composition to form bottle

[0128] In the target with MFR 2 The injection molding neck size is 38 / 10mm under standard conditions for 20 PP and weighs 17g preform.

[0129] Polypropylene bottles (300ml) were stretch blow molded from preforms on a single cavity SIG Corpoplast LB01HR equipment. This apparatus was equipped with two heating boxes, each with 5 IR lamps (L1-L5), but only one box was used in these experiments. L1 and L2 are 2500 watt lamps, while L3, L4 and L5 are 2000 watts. The setting ratio of lamps in the heating box is L1 / L2 / L3 / L4 / L5 46 / 57 / 85 / 85 / 54. All preforms were heated for the same period of time, only the total heat was varied. The preform is heated in two stages, HT1 and HT2. Between HT1 and HT2 is the aging time CT1. Aging time CT2 followed by stretching after HT2. HT1, HT2, CT1, and CT2 are 15 seconds, 4.6 seconds, 13 seconds, and 10 seconds, respectively. During heating of the pr...

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Abstract

The present invention provides an article comprising a biaxially oriented polypropylene composition, wherein said composition comprises a multimodal polypropylene and a polymeric nucleating agent. The articles are suitable for use in the medical and food industries.

Description

technical field [0001] The present invention relates to articles comprising polypropylene compositions, processes for the preparation of the aforementioned articles and said polypropylene compositions themselves. Articles of particular concern in the present invention are containers (eg bottles, cups, vials, etc.) suitable for use in the pharmaceutical and food industries. Background technique [0002] Polypropylene polymers have excellent heat and chemical resistance and, in molded form, have desirable mechanical properties such as stiffness and impact resistance. Propylene polymers are therefore an attractive choice in the production of articles for the pharmaceutical and food industries, which are often exposed to chemicals, sterilized, transported and stored before use. [0003] However, a well known problem with propylene polymer articles is that they tend to have poor clarity, for example haze can be as high as 15-20% or more for molded articles with a wall thickness ...

Claims

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Application Information

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IPC IPC(8): B29C49/00B32B27/32C08J5/18C08K5/00C08L23/10
CPCB29B2911/1498B29K2105/005B29B2911/14726B29B2911/1402C08L23/0815B29C2035/0822B29B2911/1404C08J5/18B29B2911/14033B29K2105/0044B29B2911/14026B29K2105/0026B29K2023/12B29B2911/14106B29K2105/0032B29B2911/14666B29C49/0005C08L23/10B29B11/08C08J2323/10B29B2911/14133B29C49/06B29C49/12B29K2105/16B29B11/14C08L2205/02Y10T428/1352B29C2949/26B29C2949/28B29C2949/24B29C2949/22B29C2949/3024B29C2949/3032B29C2949/0822B29C2949/0831B29C2949/0872B29C49/071B29C2949/0715B29C2049/7831B29C2049/7862C08L2666/06
Inventor 哈里·欧伊萨埃德姆皮尔约·耶斯凯莱伊宁埃斯彭·欧蒙德森盖尔·莫滕·约翰森马克斯·瓦赫霍尔德
Owner BOREALIS TECH OY
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