1、BRITISH STANDARD BS 1133-7.6: 1988 Packaging code Section 7: Paper and board wrappers, bags and containers Subsection 7.6 Moulded pulp packaging UDC 621.798.149BS1133-7.6:1988 This British Standard, having been prepared under the directionof the Packaging and Freight Containers Standards Committee,
2、was published underthe authority of the Board ofBSIand comes into effect on 30 November 1988 BSI 07-1999 First published as BS 1133-7 December 1943 First revision December 1952 Second revision May 1967 Third revision as BS 1133-7.6 November 1988 The following BSI references relate to the work on thi
3、s standard: Committee reference PKM/503 Draft for comment 86/41004 DC ISBN 0 580 17125 6 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Packaging and Freight Containers Standards Committee (PKM/-) to Technical Committee PKM/503 upon whi
4、ch the following bodies were represented: Association of Drum Manufacturers British Paper and Board Industry Federation (PIF) Department of Trade and Industry (Laboratory of the Government Chemist) Glass Manufacturers Federation Institute of Packaging Metal Packaging Manufacturers Association Minist
5、ry of Defence PIRA (The Research Association for the Paper and Board, Printing and Packaging Industries) Pressed Felt Manufacturers Association Process Plant Association Timber Packaging and Pallet Confederation The following bodies were also represented in the drafting of the standard, through subc
6、ommittees and panels: Coopted members Amendments issued since publication Amd. No. Date of issue CommentsBS1133-7.6:1988 BSI 07-1999 i Contents Page Committees responsible Inside front cover Foreword ii 1 Scope 1 2 Definitions 1 3 General 1 4 Characteristics of the material 1 5 Production methods 1
7、6 Typical uses 1 7 Comparison with alternative materials 2BS1133-7.6:1988 ii BSI 07-1999 Foreword This Subsection of BS1133, which has been prepared under the direction of the Packaging and Freight Containers Standards Committee, supersedes clause16 of BS1133-7:1967, which is deleted by amendment. B
8、S1133 was originally issued in December1943 and was intended primarily to give guidance on the packaging of Service and other Government supplies. In practice, however, the code was used not only by Government departments and contractors, but also by civilian packers and accordingly it was amended t
9、o suit commercial requirements. The Parts were later issued separately and new Sections were added as necessary. Since Section 7 covers many different types of packaging materials it was decided to subdivide it into a number of separately published Subsections. This Subsection of BS1133 provides inf
10、ormation on packaging manufactured from moulded pulp and its uses. The packaging code now consists of the following Sections all of which are published separately with the exception of Sections1 to3 which are published in one volume. Sections 1 to 3: Introduction to packaging; Section 4: Mechanical
11、aids in package handling; Section 5: Protection against spoilage of packages and their contents by micro-organisms, insects, mites and rodents; Section 6: Temporary protection of metal surfaces against corrosion (duringtransport and storage); Section 7: Paper and board wrappers, bags and containers;
12、 Section 7.1: Wrapping papers; Section 7.2: Bags and envelopes; Section 7.3: Cartons and boxes; Section 7:Chapter 7.5 Fibreboard cases; Section 7.6: Moulded pulp packaging; Section 8: Wooden containers; Section 9: Textile bags, sacks and wrappings; Section 10: Metal containers; Section 12: Methods o
13、f protection against shock (excluding cushioning devices); Section 13: Twines and cords for packaging; Section 14: Adhesive closing and sealing tapes; Section 15: Tensional strapping; Section 16: Adhesives for packaging; Section 17: Wicker and veneer baskets; Section 18: Glass containers and closure
14、s; Section 18.1: Terminology; Section 19: Use of desiccants in packaging; Section 21: Regenerated cellulose film, plastics film, aluminium foil and flexible laminates; Section 22: Packaging in plastics containers.BS1133-7.6:1988 BSI 07-1999 iii A British Standard does not purport to include all the
15、necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i to iv, pa
16、ges 1 and 2 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.iv blankBS1133-7.6:1988 BSI 07-1999 1 1 Scope This Subsection of BS1133 provides guidance on the types o
17、f packaging manufactured from moulded pulp and the purposes for which they are suitable. 2 Definitions For the purposes of this Subsection of BS1133 the following definitions apply. 2.1 embossed a description of figures, letters, designs etc. raised above the ordinary surface level of the moulded pu
18、lp material 2.2 debossed a description of figures, letters, designs etc. produced by depressing a portion or portions of the material below the ordinary surface level. Either the back-ground may be depressed leaving the figures, letters, designs etc. at the original level or the figures, letters, de
19、signs etc. may be depressed 3 General Moulded pulp provides a lightweight form of packaging; a container with dimensions100mm 100mm 150mm can weigh between25g and100g depending on the thickness and density. Such packaging is able to absorb the energy in an impact without transmitting the shock to th
20、e packed item since, although the material itself is only slightly resilient, the impact energy is absorbed by distortion and crushing at the point of impact. The material is also relatively non-abrasive and hence, where moisture absorption is not a problem, may be used in contact with some polished
21、 surfaces. 4 Characteristics of the material Containers and forms can be made from any of the pulps generally used for the manufacture of paper and board, from pure bleached sulphate pulp right through to pulps made entirely from waste material. The type of pulp used depends on the articles to be pa
22、cked. Foods such as fresh meat or fish require the best quality bleached sulphate and/or sulphite pulp while corner protectors for furniture might be made from an all waste pulp of the right strength. The density and, as a result, the thickness of the material can be varied by leaving it as first fo
23、rmed to give a softer and less rigid structure or by pressing it to provide a harder and more rigid one. In this way thicknesses of0.76mm to6.4mm can be obtained, the density varying from about0.2g/cm 3to1.0g/cm 3 . A degree of water resistance is generally incorporated at the moulding stage using w
24、ax, rosin or synthetic polymers. Containers and forms can be rendered impervious to water and resistant to the effects of absorption of water vapour by lining with plastics films and by impregnation. The pH value of moulded pulp is normally between5and9. The value can be adjusted if desired to meet
25、specific requirements. The material can be coloured by adding due to the pulp furnish or by spraying after manufacture and it is a suitable surface for printing on. Inscriptions or designs may be produced either embossed or debossed, without any extra operation. Similarly, recessed panels can be pro
26、vided for labels. The range of properties available is large and manufacturers should be consulted in relation to particular requirements. 5 Production methods The two main methods of forming the moulded product from wet slurry are as follows: a) forcing the water-borne pulp under pressure into and
27、through a perforated mould; and b) applying a vacuum on the far side of a perforated mould. In both methods the fibres are deposited on to the mould and the perforated mould approximates to the shape of the item to be packed and produces a seamless moulded product of the correct consistency and stre
28、ngth. The product may then be pressed to the desired thickness and density between hot tools, one of which has a means of dispersing the steam generated during the operation. Alternatively, the moulded product may be dried in an oven and may then be pressed between tools, which even if hot do not ha
29、ve to deal with steam dispersal. 6 Typical uses The following are examples of typical uses of moulded pulp packaging: a) egg trays and cartons; b) bottle and jar sleeves and trays; c) trays for fruit, vegetables, meat, fish and other packaged foods; d) containers and trays for electronic components,
30、 electrical instruments and switchgear; e) protectors and inserts for a variety of goods including fluorescent light tubes, picture frames, door locks and car components;BS1133-7.6:1988 2 BSI 07-1999 f) protectors for the corners and edges of furniture, radiators, windows (with or without glazing) a
31、nd domestic appliances (white goods); g) packaging for domestic sanitary ware and ceramic items. The selection of the type of pulp and the design of the mould is not necessarily simple and manufacturers should always be consulted before a decision is made. 7 Comparison with alternative materials The
32、 main alternative materials are: a) expanded polystyrene thermoformed sheet and mouldings; b) pads and fittings made from single face corrugated board; c) fittings in single and double wall corrugated board. While expanded polystyrene has the lowest density and can be moulded into thicker sections a
33、nd thus provide greater cushioning, moulded pulp has greater rigidity and physical strength in thin sections and can be moulded into more complex shapes. Corrugated fibreboard can be die-cut, creased and folded but usually requires more labour when packaging. The final choice will depend primarily o
34、n the fragility of the product, the set-up and run-on costs and the labour requirements.blankBS 1133-7.6: 1988 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. It presents the UK view on standards
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