Gummi- och plastindustri

Ämnesområden: Termoplastmaterial
Kommittébeteckning: SIS/TK 156 (Plast)
Källa: CEN
Svarsdatum: den 23 okt 2018
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This document specifies two methods, A and B, for the preparation of pastes (also known as plastisols) from appropriate PVC resins, plasticizers and other ingredients using a planetary mixing process.

Both method A and method B can be used to prepare pastes of any composition. Method A (single-speed) is particularly applicable to resins prone to heat build-up during paste preparation, while method B (two-speed) might be preferred for repetitive work, e.g. for process control during resin manufacture, because of its shorter mixing time.

Such pastes can be used for a variety of test purposes, including the determination of rheological properties for resin designation and specification.

Ämnesområden: Termoplastmaterial
Kommittébeteckning: SIS/TK 156 (Plast)
Källa: CEN
Svarsdatum: den 23 okt 2018
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This document specifies a method of determining the moulding shrinkage and post-moulding shrinkage of injection-moulded test specimens of thermoplastic material in the directions parallel to and normal to the direction of melt flow.

For the determination of shrinkage of thermosets, see ISO 2577[2].

Moulding shrinkage as defined in this document excludes the effects of humidity uptake. This is included in post-moulding shrinkage and thus in total shrinkage. For cases when post-moulding shrinkage is caused by the uptake of humidity only, see ISO 175[1].

Moulding shrinkage as defined in this document represents the so-called free shrinkage with unrestricted deformation of the cooling plates in the mould during the hold period. It is considered, therefore, as the maximum value of any restricted shrinkage.

Kommittébeteckning: SIS/TK 156 (Plast)
Källa: CEN
Svarsdatum: den 23 okt 2018
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This document specifies a test method for determining the peel strength of poly(vinyl chloride) (PVC) based profiles laminated with foils.

Kommittébeteckning: SIS/TK 156 (Plast)
Källa: ISO
Svarsdatum: den 24 okt 2018
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This International Standard specifies requirements for factory made, self-supporting, double skin metal faced

insulating sandwich panels, which are intended for discontinuous laying in the following applications:

a) roofs and roof cladding;

b) external walls and wall cladding;

c) walls (including partitions) and ceilings within the building envelope.

The insulating core materials covered by this International Standard are rigid polyurethane, expanded

polystyrene, extruded polystyrene foam, phenolic foam and poly(ethylene terephthalate) foam.

NOTE Polyurethane (PUR) includes polyisocyanurate (PIR).

Panels with edge details that utilize different materials from the main insulating core are included in this

International Standard.

Panels used in cold store applications are included in this International Standard.

This International Standard does not cover the following:

a) sandwich panels with a declared thermal conductivity for the insulating core greater than 0,06 W/m²K

at 10 °C;

b) products consisting of two or more clearly defined layers of different insulating core materials

(multilayered);

c) panels with perforated facing(s);

d) curved panels.

Ämnesområden: Armerad plast
Kommittébeteckning: SIS/TK 156 (Plast)
Källa: CEN
Svarsdatum: den 1 nov 2018
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ISO 10350 identifies specific test procedures for the acquisition and presentation of comparable data for certain basic properties of plastics. In general, each property is specified by a single experimental value, although in certain cases properties are represented by two values obtained under different test conditions or along different directions in the material. The properties included are those presented conventionally in manufacturers' data sheets. This part of ISO 10350 applies to reinforced thermoplastic and thermosetting materials where the reinforcement fibres are either discontinuous with a fibre length prior to processing greater than 7,5 mm or continuous (e.g. fabric, continuous-strand mat or unidirectional). Part 1 of this International Standard deals specifically with unreinforced and filled plastics, including those using fibres less than 7,5 mm in length.

Ämnesområden: Termoplastmaterial
Kommittébeteckning: SIS/TK 156 (Plast)
Källa: CEN
Svarsdatum: den 16 nov 2018
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This document specifies a four-cavity mould, the type С ISO mould, for the injection moulding of small tensile bars measuring ≥ 60 mm × 10 mm × 3 mm (the type CW11 test specimen in ISO 20753).

Ämnesområden: Termoplastmaterial
Kommittébeteckning: SIS/TK 156 (Plast)
Källa: CEN
Svarsdatum: den 17 nov 2018
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This document establishes a system of designation for thermoplastic polyester (TP) material, which can be used as the basis for specifications. It covers polyester homopolymers for moulding and extrusion based on poly(ethylene terephthalate) (PET), poly(butylene terephthalate) (PBT), poly(cyclohexylenedimethylene terephthalate) (PCT), poly(ethylene naphthalate) (PEN), poly(butylene naphthalates) (PBN) and other TP-types and copolyesters of various compositions for moulding and extrusion.

The types of thermoplastic polyester are differentiated from each other by a classification system based on appropriate levels of the designatory properties:

a) viscosity number;

b) tensile modulus of elasticity;

and on information about the intended application and/or method of processing, important properties, additives, colorants, fillers and reinforcing materials.

This designation system is applicable to thermoplastic polyester homopolymers and copolymers. It applies to materials ready for normal use in the form of powder, granules or pellets, unmodified or modified by colorants, fillers and other additives. This document does not apply to the saturated polyester/ester and polyether/ester thermoplastic elastomers covered by ISO 20029.

It is not intended to imply that materials having the same designation give necessarily the same performance. This document does not provide engineering data, performance data or data on processing conditions which can be required to specify a material. If such additional properties are required, they are intended to be determined in accordance with the test methods specified in ISO 20028-2, if suitable.

In order to designate a thermoplastic polyester material to meet particular specifications, the requirements are to be given in data block 5 (see 4.1).

Kommittébeteckning: SIS/TK 156 (Plast)
Källa: CEN
Svarsdatum: den 13 dec 2018
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This European Standard specifies the requirements related to dimensional, mechanical, optical and thermal characteristics of thermoplastic films used for covering permanent or temporary greenhouses and walking tunnels and low tunnels used for forcing and semi-forcing vegetable, fruit and flower crops. Lay-flat perforated cover films are also in the scope of this European Standard. It specifies a classification for the durability of covering films and the test methods referred to in this standard.This European Standard specifies also test methods for the determination of the chlorine and sulfur contents of films subjected to use.This European Standard is applicable to thermoplastic covering films used in agriculture and horticulture in Europe, in the thickness range 20 µm up to more than 250 µm, based on polyethylene and/or ethylene copolymers materials, of the following types: non-thermal films, thermal clear films and thermal diffusing films.This European Standard also defines guidance for installation, use and disposal of covering films. It defines the conventional expected lifetime, as well as rules that allow evaluating the remaining use potential in the event of a failure before the normal end-of-use date. NOTE These rules allow estimating the residual value of the films. These provisions only apply to the film itself and the damage it has undergone. Any other problem falls within the scope of professional practices and the general terms and conditions of sale.

Ämnesområden: Rörledningssystem; Slangar
Kommittébeteckning: SIS/TK 477 (Skeppsteknik och Marin Teknologi)
Källa: ISO
Svarsdatum: den 17 dec 2018
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This document specifies the minimum technical and operational requirements for electronic record books to be used on ships.

This International Standard aims to provide manufacturers, operators, maritime administrations and owners with a technical background that could be used for the replacement of paper logbooks, prior administration approval.

Kommittébeteckning: SIS/TK 104 (Tätningselement)
Källa: ISO
Svarsdatum: den 21 dec 2018
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This document specifies limits for physical contacts between the machine or parts of the machine and humans that are caused by movement of the machine as part of its intended use or foreseeable misuse.

This document covers all types of machines that are designed to function where people are allowed to be present and the machine is allowed to make physical contact with those people.

This document includes machines that contact people as part of their function and machines that do not require human contact. It encompasses interactions that are intentional or unintentional.