1、BRITISH STANDARD BS 7379:1991 Specification for Plastics/metal laminate collapsible tubesBS7379:1991 This British Standard, having been prepared under the directionof the Packaging and Freight Containers Standards Policy Committee, was publishedunder the authorityofthe Board of BSIandcomes intoeffec
2、t on 28February1991 BSI 11-1999 The following BSI references relate to the work on this standard: Committee reference PKM/567 Draft for comment 90/37352DC ISBN 0 580 19302 0 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Packaging and F
3、reight Containers Standards Policy Committee (PKM/-) to Technical Committee PKM/567, upon which the following bodies were represented: Cosmetic, Toiletry and Perfumery Association Ltd. Coopted members Amendments issued since publication Amd. No. Date CommentsBS7379:1991 BSI 11-1999 i Contents Page C
4、ommittees responsible Inside front cover Foreword ii 1 Scope 1 2 Definitions 1 3 Materials: design and manufacture 1 4 Dimensions 2 5 Surface print requirements for laminate tubes 2 6 Packaging 8 Appendix A Test for laminate whiteness 9 Appendix B Test for laminate interply adhesion 9 Appendix C Tes
5、ts for the effectiveness of closure 9 Appendix D Side-seam welding tests 9 Appendix E Test for tube ovality 13 Appendix F Test for print and laquer adhesion and flexibility 13 Figure 1 Tube dimensions: standard nozzle configuration 3 Figure 2 Tube dimensions: M11 nozzle configuration 4 Figure 3 Nome
6、nclature for collapsible tubes 5 Figure 4 Cap dimensions: standard thread configuration 5 Figure 5 Cap dimensions: M11 thread configuration 6 Figure 6 Available print area 7 Figure 7 Preferred carton type and filling arrangement 8 Figure 8 Instrument for testing continuity 11 Figure 9 Wiring diagram
7、 12 Figure 10 Apparatus for testing flexibility and adhesion of internal coating 14 Table 1 Maximum conductivity limits for the continuity test 2 Table 2 Internal carton dimensions and maximum carton contents 8 Publication(s) referred to Inside back coverBS7379:1991 ii BSI 11-1999 Foreword This Brit
8、ish Standard has been prepared under the direction of the Packaging and Freight Containers Standards Policy Committee. Metal collapsible tubes have been used as a means of packaging for many years, but the last decade has seen the development and increasing use of collapsible tubes made from plastic
9、s/metal laminates. Originally used for dentifrice, plastics/metal laminate collapsible tubes are now gaining wide acceptance as containers for other products previously packed in metal collapsible tubes. A British Standard does not purport to include all the necessary provisions of a contract. Users
10、 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, pagesi andii, pages1 to14, an inside back cover and a back
11、 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.BS7379:1991 BSI 11-1999 1 1 Scope This British Standard specifies the diameters, lengths, wall thickness and thread details fo
12、r plastics/metal laminate collapsible tubes. The material used in the manufacture of the tubes is specified as are the requirements for seal integrity, side-seam welding, shoulder welding, fill volumes, surface print restrictions and packaging. NOTEThe titles of the publications referred to in this
13、standard are given on the inside back cover. 2 Definitions For the purposes of this British Standard the following definitions apply. 2.1 collapsible tube a cylinder of pliable plastics/metal laminate which can be sealed in such a manner that its contents, although readily discharged in any desired
14、quantity, are protected from contact with air or moisture during the whole period of use as a container 2.2 shoulder a moulded plastics component part of a total tube body which forms the nozzle end of the tube 2.3 nozzle the outlet of a collapsible tube through which the contents are expelled by sq
15、ueezing the wall of the tube 2.4 tamper-evident nozzle a nozzle which has the orifice closed by, for example, a thin diaphragm which is capable of being pierced 2.5 cap a screw closure for the nozzle end of a collapsible tube 3 Materials: design and manufacture 3.1 Tube body The tube body shall be c
16、onstructed from a laminate comprising a metal centre layer (preferably aluminium) and plastics outer layers. The laminate shall consist of not less than five layers in total. Two of the layers adjacent to the metal shall function as adhesive layers. The outer layers of the laminate shall be either w
17、hite-pigmented or clear and the laminate shall be printed either by reverse printing the outer clear plastics layer prior to lamination or alternatively the finished laminate may be surface printed, in which case the whole of the print area shall also be over-varnished. NOTE 1It is current practice
18、for the body material of tubes within the diameter range of22mm to35mm inclusive to have a thickness of320m. Tubes of25mm diameter and less may be manufactured from body material of275m thickness. When required, the tube body shall be tested for laminate whiteness in accordance withAppendix A and fo
19、r laminate interply adhesion in accordance withAppendix B. NOTE 2Acceptance criteria should be as agreed between the interested parties. 3.2 Tube shoulder This shall be produced from a grade of plastics appropriate to the end use of the tube and attached to the body by either a moulding process or a
20、 welding process. The shoulder shall be provided with a tamper-evident device if ordered by the final customer. NOTEThe tube shoulder may be fitted with a rondelle. This is a disc of material, usually body laminate material, cut to the dimensions of the exterior or interior shoulder, that has barrie
21、r properties. 3.3 Tube cap Tubes shall be supplied fitted with the tube cap moulded from a grade of plastics material appropriate to the end use of the tube. The integrity of the seal between the cap and the tube shall be tested in accordance with one of the procedures described inAppendix C. No lea
22、kage shall occur. NOTEThe test to be used and the rejection limits for leaking tubes should be agreed between the purchaser and the manufacturer. 3.4 Tube insert When required, tubes shall be fitted with a shoulder insert moulded from a plastics material which has the appropriate barrier properties
23、(e.g.polyester).BS7379:1991 2 BSI 11-1999 3.5 Welding 3.5.1 Side-seam welding The effectiveness of the side-seam welding operation shall be examined by using the copper sulphate continuity test or the burst strength test, both of which are described inAppendix D. The maximum conductivity limits for
24、the continuity test shall be as given inTable 1. Table 1 Maximum conductivity limits for the continuity test 3.5.2 Shoulder welding The effectiveness of the body to shoulder welding shall be examined by the burst strength test as described inAppendix D. The tube shall not fail at any point. 4 Dimens
25、ions 4.1 General The dimensions and shoulder angles of collapsible tubes shall be in accordance withFigure 1 andFigure 2. NOTEWhen specifying collapsible tubes the purchasers requirements should be stated in the following order: a) diameter; b) length; c) orifice diameter (when a choice is available
26、); d) cap detail (when a choice is available). The nomenclature of collapsible tubes is given inFigure 3. 4.2 Standard tube diameters The nominal outside diameter, measured at the shoulder of the finished tube, shall be19mm,22mm, 25mm, 28mm, 30mm, 32mm, 35mm or40mm. For all diameters the tolerance+0
27、.5mm0.2mm shall apply. The tube body shall be essentially cylindrical throughout its length, but some degree of ovality is permissible because of the inherent flexibility of the body material and this shall be most pronounced at the open end of the tube. Ovality shall be determined in accordance wit
28、hAppendix E and shall be not greater than10%. 4.3 Tube lengths For all lengths the tolerance 2.0mm shall apply. NOTEBy convention tube length refers to the length of the laminate body (standard tube lengths are in the range75mm to200mm in increments of5mm). Tube lengths outside this range are specia
29、l cases and should be agreed between user and supplier. 4.4 Typical fill volumes The fill volume, i.e.the total volume of the product to be filled into the tube, shall be as follows for the given tube dimensions which also allow for ullage to enable tubes to be sealed. 4.5 Tube shoulder mouldings NO
30、TEComplete standardization of shoulder mouldings is not possible as complete specification depends on the type of tube manufacturing system used. Standardization of threads and orifice size shall be as follows: 5 Surface print requirements for laminate tubes 5.1 Available print area An area of the t
31、ube in the vicinity of both the body and the shoulder welds shall be left free from print and varnish. The available print areas for the various standard tube diameters shall be as specified inFigure 6. NOTEThere is less available print area on the reverse panel. This is because of the tube side sea
32、m weld, which is positioned on the reverse panel and away from what is the fold line when the tube is end-sealed. 5.2 Colour registration A colour-to-colour registration tolerance of 0.5mm shall apply. Where colours are inset0.5mm colour overlap shall be allowed to reduce the risk of a white outline
33、. 5.3 Print and laquer adhesion and flexibility When tested in accordance withAppendix F there shall be no cracking or loss of adhesion of the print and/or laquer at any of the folds. Tube length Tube diameter Limit (maximum) mm mm mA 75 76 to 100 101 to 150 151 to 200 All 25 35 50 75 Fill volume Di
34、ameter Length 15 ml 25 ml 30 ml 50 ml 75 ml 100 ml 125 ml 150 ml 150 ml 19 mm 22 mm 22 mm 25 mm 28 mm 32 mm 35 mm 35 mm 40 mm 85 mm 100 mm 105 mm 145 mm 165 mm 175 mm 185 mm 200 mm 175 mm Dentrifice tubes: 13.1 mm Buttress thread 7.7 mm Orifice size Pharmaceutical tubes M11 or M15 threads 4.8 mm Ori
35、fice size Caps: Caps shall suit thread dimensions of shoulders. SeeFigure 4 andFigure 5 for cap dimensions. Tolerances on mouldings shall be as indicated on the drawings.BS 7379:1991 BSI 11-1999 3 Nominal tube size Tolerance 22 25 28 30 32 35 40 D 21.7 24.7 27.7 29.7 31.7 34.7 39.7 d 13.1 13.1 13.1
36、13.1 13.1 13.1 13.1 0.1 d 1) 11.45 11.45 11.45 11.45 11.45 11.45 11.45 0.1 E 10.3 10.3 10.3 10.3 10.3 10.3 10.3 0.1 F 7.7 7.7 7.7 7.7 7.7 7.7 7.7 0.1 g 10.7 10.7 10.7 10.7 10.7 10.7 10.7 0.1 h 18.25 18.80 19.70 20.85 21.40 22.30 23.75 0.1 k 14.25 14.65 15.50 15.92 16.70 17.57 18.78 0.1 r 2.0 2.0 2.0
37、 2.0 2.0 2.0 2.0 0.3 l = tube body length: For typical tube fills see4.4. Z = l + k + 6.4 mm All dimensions are in millimetres. Figure 1 Tube dimensions: standard nozzle configuration +0.5 0.2BS 7379:1991 4 BSI 11-1999 Nominal tube size Tolerance 19 22 25 30 35 D 18.7 21.7 24.7 29.7 34.7 d 10.6 10.6
38、 10.6 10.6 10.6 0.05 d 1) 8.86 8.86 8.86 8.86 8.86 0.05 E 8.53 8.53 8.53 8.53 8.53 0.15 F 4.8 4.8 4.8 4.8 4.8 0.05 g 6.18 6.18 6.18 6.18 6.18 0.15 h 13.46 14.32 15.19 16.63 18.08 0.1 k 8.47 9.33 10.2 11.64 13.09 0.15 r 2.0 2.0 2.0 2.0 2.0 0.3 l = tube body length: For typical tube fills see4.4. Z =
39、l + k + 1.45 mm All dimensions are in millimetres. Figure 2 Tube dimensions: M11 nozzle configuration +0.5 0.2BS7379:1991 BSI 11-1999 5 Figure 3 Nomenclature for collapsible tubes All dimensions are in millimetres. Figure 4 Cap dimensions: standard thread configurationBS 7379:1991 6 BSI 11-1999 Nomi
40、nal tube size Tolerance 22 25 30 35 A 21.5 24.5 29.5 34.5 0.1 B 21.12 24.09 29.04 33.99 0.15 C 11.0 11.0 11.0 11.0 D 9.04 9.04 9.04 9.04 E 7.6 7.6 7.6 7.6 0.15 f 10.86 11.70 13.10 14.60 0.1 g 8.91 9.75 11.15 12.65 0.15 All dimensions are in millimetres. Figure 5 Cap dimensions: M11 thread configurat
41、ion +0.05 0 +0.05 0BS 7379:1991 BSI 11-1999 7 Figure 6 Available print areaBS7379:1991 8 BSI 11-1999 6 Packaging The internal dimensions of the carton for each of the tube diameters shall be as given inTable 2. Table 2 Internal carton dimensions and maximum carton contents Diameter A 1) B 1) Number
42、of tubes Total number Crosswise Lengthwise mm mm mm 13.5 16 19 22 25 28 30 32 35 40 376 363 365 576 567 538 576 569 551 560 237 232 238 363 363 350 345 368 368 340 18 14 12 16 14 12 11 11 10 8 32 26 22 30 26 22 22 20 18 16 576 364 264 480 364 264 242 220 180 128 NOTEThe carton design may be importan
43、t for some tube fillers. For this reason the preferred carton type seeFigure 7(a) andFigure 7(b) and arrangement of tubes within the carton seeFigure 7(c) are as given inFigure 7. Figure 7 Preferred carton type and filling arrangementBS7379:1991 BSI 11-1999 9 Appendix A Test for laminate whiteness A
44、.1 Equipment A.1.1 Smoke stain reflectometer 1)is required consisting of a measuring head and meter unit. A.1.2 Calibration standards with the following values are used: White laminate, 86units Grey laminate, 76units White tile, 81units A.2 Principle The instrument consists of a measuring head and a
45、 meter unit. Light from a6V, 3W bulb is directed through an orifice in an annular photocell to give a sharply defined spot on the laminate specimen. Reflected light is directed back on to the photocell, which is coupled to a sensitive microammeter(0to100division scale). A.3 Method Switch on the inst
46、rument and leave for6min. Place the mask over the tile sample. Place the measuring head in the mask and adjust the sensitivity control to the standard figure (81). Remove the head and substitute the light standard (white laminate). Check that the result is86. Repeat for the dark standard (grey lamin
47、ate) (76). Finally substitute the laminate sample to be tested. A.4 Interpretation Reject all samples outside the range agreed between the interested parties. Appendix B Test for laminate interply adhesion B.1 Equipment A tensile testing machine complying with BS5214-1, and of the low inertia type i
48、s used. A 2.0kg load cell shall be used. B.2 Method The method used shall comply with that given in BS5350-C12. Cut 10 test pieces of laminate, measuring15mm wide and150mm long. These shall include five test pieces cut along the direction of the manufacture of the laminate web and five test pieces c
49、ut across the web. Start the delamination of the different interplies. Hold the separated ends in the grips of the tensile testing machine, taking care that the test piece is accurately aligned. Peel interplies apart using a separation speed of100mm/min. Record the average peel strength of each direction in newtons. B.3 Interpretation All interply bond strengths should be greater than or equal to6.0N/15mm width. Appendix C Tests for th
