ADDITIVES | PIGMENTS Right:
Silberline’s latest metallic pigments are supplied in its easy handling Silvet E1 format
mers. The grades have been successfully tested in a variety of plastics manufacturing processes and are approved for food contact use. Applications are foreseen in cosmetics and food packaging, household products, sporting goods and lifestyle products.
Schlenk produces an extensive range of metallic pigments for plastics industry applications. Its latest introduction is Zenexo GoldenShine 21YY, which is described as the first in a new line of coloured aluminium effect pigments. Supplied in a powder form, it is said to be easy to formulate in plastics compounds and masterbatches and provides very good hiding power, flop and gloss. Pigment supplier Silberline has introduced
three new metallic effect pigments for the plastics market that are said to provide a low patina and brighter metallic effect than its current products. Their higher coverage also means better cost-in- use for bright effects in plastics, says Jeff Drusda, Technical Service Representative at Silberline. The products are said to meet the growing trend for paint replacement in the automotive, appliance, and consumer electronics industries, Drusda explains. The grades (LT 12931, LT 12932, and LT 12425) are produced using the company’s ad- vanced milling techniques and are provided in its SILVET E1 format. This incorporates the pigments at a level of 70% into a polymer carrier to simplify handling.
Below:
Ampacet has a number of colour master- batch options for the
synthetic paper sector
Silberline supplies its pigment concentrates to both masterbatch and compound manufacturers and recommends low-shear processing to maintain the aluminum flake integrity. “High-shear condi- tions may create fragments of fine particles, which darkens the metallic effect,” says Drusda. “When possible, low-shear elements and downstream addition of aluminum pigment are recommended to impart lower shear effect.” Recent research at Silberline investigating the
effect of metallic pigment dispersions on the physical properties of thermoplastics has found that aluminum flake particle size and the amount of pigment added to the test parts had the most significant effect. Researchers studied the effects on different polymer types using a small laboratory extruder to compound materials prior to injection moulding.
Transparent demands Transparency is an ongoing trend in the design of packaging and other consumer applications. “Consumers like to be able to see the package contents. Transparent or translucent packages are also seen as a ‘greener’ design that is more natural and simple,” says Doreen Becker, Global Insight & Innovation Senior Manager at Ampacet. However, she explains that a lack of colour and effect in transparent packaging designs can make a package more difficult to differentiate on the shelf. The company’s recently introduced shimmer masterbatches – translucent colours that have a subtle colour flip when viewed from different angles – are designed to provide this much needed differentiation. Also new to the Ampacet product line is
Kintsugi. This is designed to reproduce the traditional Japanese Kintsugi “shattered glass” look that is currently proving popular in glazing and furniture items. The company sees the translucent effect concentrate being used in applications such as packaging, architectural panels, and small appliances. Ampacet has also developed new frosted effects for use in both flexible and rigid packaging. Spirit bottles, for example, are often frosted using a secondary spray process but the effect concentrate produces it directly in a PET stretch-blow moulding process. For the films sector, Ampacet recently intro-
duced Paper 2.0 Synthetic Paper masterbatch for use in production of PE and PP blown, cast, or
58 COMPOUNDING WORLD | September 2017
www.compoundingworld.com
PHOTO: AMPACET
PHOTO: SILBERLINE
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74 |
Page 75 |
Page 76 |
Page 77 |
Page 78 |
Page 79 |
Page 80 |
Page 81 |
Page 82 |
Page 83 |
Page 84 |
Page 85 |
Page 86
