EXTERNAL CORROSION IN CANNED FOOD CONTAINERS

EXTERNAL CORROSION IN CANNED FOOD CONTAINERS

One of the problems that most concern the canning industry is external corrosion of the containers, since it affects the aesthetics of this, causes commercial rejections and can create sanitary problems when, in extreme cases, the containers are punctured . In order...
METAL CAPSULES Twist-Off

METAL CAPSULES Twist-Off

SUMMARY In this work, the characteristics of the metal caps used in wide-mouth glass bottles, screw-lock or pressure-sealed, as well as the different types and sizes on the market, the raw materials used in their manufacture, their most common applications and their...
OVERCAPS FOR AEROSOL PACKAGING

OVERCAPS FOR AEROSOL PACKAGING

This article illustrates the quality that should be met by a cap intended for aerosol containers and how to define and control it   INTRODUCTION OVERCAPS FOR AEROSOL PACKAGING    The objective of this work is the definition of quality characteristics,...
MECHANICAL PROPERTIES OF CANS

MECHANICAL PROPERTIES OF CANS

  The cans intended to contain food must have the strength and robustness to allow handling, filling and processing, storage and distribution without damage. The most delicate moment of a container is during the sterilization process to which it is subjected once...
DIMENSIONAL CONTROL OF ENDS

DIMENSIONAL CONTROL OF ENDS

  The means and the way to perform a dimensional control of ends, applying simple and reliable procedures, are treated in this technical article.   INTRODUCTION In the metal industry, the purchase or exchange of already manufactured components is common (ends,...
PROOF OF HARDNESS IN TINPLATE DR

PROOF OF HARDNESS IN TINPLATE DR

  INTRODUCTION The reduced double tinplate has a high rigidity, characterized by a hardness measured on the Rockwell 30T scale between 70 to 80 degrees. This measurement can be made on a Rockwell 15T equipment for thicknesses less than 0.20 mm and later converted...
CHROME PLATE IN VEGETABLE PRESERVES

CHROME PLATE IN VEGETABLE PRESERVES

  SUMMARY It describes tests carried out in the laboratory, with canned different vegetable preserves, carried out using containers with lids and funds from TFS, to see the behavior of the same before this material. It is concluded that this product is perfectly...
FILIFORM CORROSION IN THE TIN

FILIFORM CORROSION IN THE TIN

Filiform corrosion is a form of attack in which the corrosion process manifests itself in filaments and represents a particular type of anodic undercut. It is usually produced in humid environments and is more common under organic films applied on steel, aluminum,...
CORROSION OF THE TIN

CORROSION OF THE TIN

  It is mainly interesting to examine the behavior of tinplate as a raw material for the manufacture of containers, and specifically from the point of view of corrosion. Atmospheric agents attack tinplate according to ambient humidity, average temperature,...
QA  IN THE LINES OF  CUTTING COILS

QA IN THE LINES OF CUTTING COILS

It is increasingly common for the container manufacturer to buy the metal to be used (tinplate, TFS or aluminum) in coils. This allows them a better use of it. In order to prepare this material properly, it is necessary to use a coil cutting line that may be your...
SUPERFICIAL DEFECTS OF THE TIN

SUPERFICIAL DEFECTS OF THE TIN

  LIST OF ASPECTS AND SUPERFICIAL DEFECTS Summary   MINOR DEFECTS: # Lines of Lüders # Brands of cold rolling cylinders # Stains or traces of degreasing or pickling # Woody appearance (“wood grain”)   MAJOR DEFECTS: # Lack of fusion # Rusty...
VARIABLE QUALITY CONTROL PARAMETERS

VARIABLE QUALITY CONTROL PARAMETERS

  We will define in a very simple way each one of the basic concepts used in a quality control system by variables applied in the inspection of packaging. Before we will define what we understand by variables. WHAT TYPES OF VARIABLES DO WE KNOW? There are two...