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PKG Glass Portion of Review Session

by: Samantha Shea

PKG Glass Portion of Review Session PKG 101

Marketplace > Michigan State University > Packaging Science > PKG 101 > PKG Glass Portion of Review Session
Samantha Shea

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About this Document

In class on Tuesday, September 27th we had a review session for the upcoming exam. Most of the material was just highlighted parts from other lectures. The new material that I found important was t...
Principles of Packaging
p. koning
Class Notes
Packaging, class, notes
25 ?




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This 3 page Class Notes was uploaded by Samantha Shea on Tuesday September 27, 2016. The Class Notes belongs to PKG 101 at Michigan State University taught by p. koning in Fall 2016. Since its upload, it has received 6 views. For similar materials see Principles of Packaging in Packaging Science at Michigan State University.

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Date Created: 09/27/16
Glass  Portion  From  Review  Session Tuesday,  September   27,3:12  PM ► 2015  U.S.  Glass  Container  Shipments  By  Category ○ Beer  (57%) ○ Food  (19%) ○ Beverages  (9%) ○ Liquor  (4%) ○ Ready  to  Drink  (3%) ○ Wine  (8%) ○ Other  (0.2%) • 82%  of    glass  container  shipments  are  for  beverages ► Raw  materials Sand ○ ○ Soda  ash ○ Limestone ► Glass  is  100%  recyclable,  endlessly. ► Cullet • 2  types ○ Plant  cullet  (internal) ○ Ecology  cullet  (Post  consumer) • Furnaces  utilize  between  15  &  90%  Cullet • Key  Benefits ○ 100%  reusable ○ Closes  the  loop ○ Lowers  energy  usage ○ Reduces  raw  material  consumption ► What  is  Light  Weighting ○ The  reduction  of  the  amount  of  glass  used  to  make  any  given  bottle  or  jar   while  meeting  requirements  for  the  package ► Light  Weight  Advantages ○ Reduces  energy  costs ○ Reduces  freight  costs   Reduces  raw  materials  usage ○ ○ Increases  production  speeds ○ Increases  filling  line  efficiency   ○ Reduces  CO2 ○ Reduces  energy  costs ○ Reduces  freight  costs   ○ Reduces  raw  materials  usage ○ Increases  production  speeds ○ Increases  filling  line  efficiency   ○ Reduces  CO2 ► Flint  (Clear)  Decolorizing ○ Iron  content  imparts  green  color ○ Selenium  metal  imparts  pink  or  salmon  color ○ Combination  produces  gray  color ○ Appears  clear  to  the  human  eye ► Amber  Glass ○ Iron  +  Sulfur  +  Excess  Carbon ○ Reduced  Glass  (Oxygen  starved) ○ Absorbs  wavelengths  <450  nm § Light  protection  for  beer,  pharmaceuticals  items,  etc. ► The  Basic  Parts  of  a  Glass  Container • Finish:  Holds  cap  or  closure ○ Sealing  surface:  contacts  sealing  gasket ○ Glass  thread  or  lug:  protruding  ridges  for  fastening  closure ○ Continuous  thread:  for  fastening  screw-­‐type  closure ○ Glass  finishes  are  standardized ○ Transfer  bead:  used  in  transfer  of  container • Body:Made  in  body-­‐mold ○ Shoulder:  top  portion  where  diameter  decreases ○ Heel:  curved  portion  at  the  bottom ○ Side  wall:  area  between  shoulder  and  heel ○ Mold  seam:  vertical  mark  from  matching  two  parts  of  body  mold • Bottom:  made  in  bottom  plate ○ Bottom  plate  parting  line:  horizontal  markymold    matching  bod-­‐ parts  with  bottom  plate ○ Bearing  surface:  portion  on  which  container  rests ► The  Basic  Parts  of  a  Glass  Container:  Bearing  Surface • The  main  function  of  these  bumps  called  "stipples"  is  to  limit  the  contact   area  between  the  bottom  of  the  hot  container  and  the  equipment  it  is  set   onto,  preventing  it  from  cooling  even  more  rapidly  and  developing  more   thermal  stress. ► Shape ► Embossing ► Internal  &  External  Embossing ► Compression • Glass  is  relatively  strong  in  compression ► Tension Glass  is  relatively  weak  in  tension   ► Embossing ► Internal  &  External  Embossing ► Compression • Glass  is  relatively  strong  in  compression ► Tension • Glass  is  relatively  weak  in  tension   • It's  a  brittle  material ► Surface  Treatments • Coating  material  applied  to  outside  surface  of  glass  containers ► Why  apply  Surface  Treatments? • Preserves  container  strength • Facilitates  flow  through  glass  manufacturers'  line • Facilitates  flow  through  customer"s  filling  line


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