SRS-003
Revision E
Page 7 of 7
GLOBAL QUALITY ASSURANCE
SAFETY & RELIABILITY SPECIFICATIONS
TITLE: SHARP EDGE SPECIFICATION
NUMBER: SRS-003
REVISION: E
AUTHOR: C. FISCHER
DATE: 5/3/11
Hasbro RI Approval:
Hasbro UK Approval:
Hasbro FE Approval:
PURPOSE
The purpose of this specification is to delineate the procedures for identifying sharp edges as defined by the current CPSC (Consumer Product Safety Commission) requirements and to provide specifications that Hasbro Inc. products must meet in order to be in compliance with CPSC Regulations. In addition, conformance to this specification will ensure compliance to F963-08, EN71-1, ISO 8124-1, and Canadian Requirements.
SCOPE
This specification is applicable to all Hasbro Inc. products both before and after the product has undergone use and abuse testing as specified by the appropriate test plan.
Toys that by reason of their functional purpose necessarily present the hazard of sharp metal edges and that do not have any non-functional sharp metal edges are exempt from this specification: provided, the toy is identified by a conspicuous, legible, and visible label as having functional sharp metal or glass edges. Toys intended for children less than 48 months shall not have accessible hazardous functional sharp edges. Functional sharp "glass" edges are not permitted on Hasbro, Inc. products.
DEFINITIONS
Accessibility
An accessible edge for a toy or article intended for children 3 years of age or less is one that can be contacted by any portion forward of the collar of the accessibility probe designated as Probe A in Figure1 of this specification.
An accessible edge for a toy or article intended for children over 3 years of age is one that can be contacted by any portion forward of the collar of the accessibility probe designated as Probe B in Figure 1 of this specification.
An accessible edge for a toy or article intended for children of ages spanning both age groups is one that can be contacted by any portion forward of the collar of either Probe A or B as shown in Figure 1 of this specification.
Insertion Depth for Accessibility
For any hole, recess, or opening having a minor dimension (the minor dimension of any opening is the diameter of the largest sphere that will pass thru the opening) smaller than the collar dimension of the appropriate probe, the total insertion depth for accessibility shall be up to the collar on the appropriate probe. Each probe joint may be rotated up to 90 degrees to simulate knuckle movement.
Inaccessible Edges
Metal or glass edges shall be considered inaccessible without testing with a probe if they lie adjacent to a surface of the test sample, and any gap between the edge and the adjacent edge does not exceed .020 inch. For example, in a lap joint in which a metal edge is overlapped by a parallel surface, any burr or feather edge on the side closest to the protecting paralle surface is no greater than .020 inch. As an additional example, when sheet metal has a hemmed edge a portion of the sheet adjacent to the edge is folded back upon itself, approximately 180 degrees, so that it is roughly parallel to the main sheet. Any burrs or feathering on the inside edge, the side closest to the protecting parallel surface of the main sheet, will be considered inaccessible if the gap between the inside edge and the parallel surface does not exceed .020 inch.
Glass
For purposes of this specification, glass is defined as a hard, brittle, amorphous substance produced by fusion, usually consisting of mutually dissolved silica and silicates that also contain soda and lime.
Metal
For purposes of this specification the word "metal" is intended to include both elemental metals and metal alloys.
TEST METHOD
Sharp Edge Tester - Principle of Operation
The test shall be performed with a sharp edge tester which contains a cylindrical mandrel capable of rotation at a constant velocity. The full circumference of the mandrel shall be wrapped with a single layer of polytetrafluoroethylene (TFE) tape as specified in Section of this specification. The mandrel shall be applied to the edge to be tested with a normal force of lbs. such that the edge contacts the approximate center of the width of the tape as shown in Figure 1 of this specification. The mandrel shall be rotated thru one complete revolution while maintaining the force against the edge constant. Linear motion of the mandrel along the line of the edge shall be prevented. The edge shall be identified as SHARP if it completely cuts thru the tape for a length of not less that 1/2" at any force up to pounds.
Test Procedure
The edge of the sample to be tested shall be held in such a manner that it does not move during the test. If the maximum mandrel force of lbs. causes the edge to bend, a reduced mandrel force may be used.
Part of the test sample may need to be removed to allow the sharp edge testing device to test an edge that is accessible by criteria of Sections and of this specification. Such dismantling of the test sample could affect the rigidity of the edge in question. The sharp edge test shall be performed with the edge supported so that its stiffness approximates, but is not greater than the edge stiffness in the assembled sample.
Conduct of a sharp edge test is as follows: Wrap one layer of polytetrafluoroethylene (TFE) tape, around the full circumference of the mandrel in an unstretched state. The ends of the tape shall be either butted or overlapped not more than inch. Apply the mandrel, at the approximate center of the tape, to the edge of the test sample with a force not greater than pounds measured in a direction at right angles to the mandrel axis. The mandrel shall be placed so that its axis is at 90 degrees plus/minus 5 degrees to the line of a straight test edge or 90 degrees plus/minus 5 degrees to a tangent at the point of contact with a curved test edge. The point of contact between the test edge and the mandrel shall be in the approximate center of the width of the tape. The axis of the mandrel may be positioned anywhere in a plane which is at right angles to either the line of a straight edge test or to a tangent at the point of contact with a curved test edge. The operator should seek the orientation most likely to cause the edge to cut the tape.
Maintain the force against the edge and rotate the mandrel through one complete revolution while preventing any linear motion of the mandrel along the edge. Release the mandrel from the edge and remove the tape without enlarging any cut or causing any score to become cut. A cut in the tape with a length of not less than 1/2 inch indentifies an edge as sharp.
SPECIFICATIONS FOR SHARP EDGE TEST EQUIPMENT
The following specifications shall apply to the equipment to be used in the sharp edge test.
The rotation of the mandrel shall produce a constant tangential velocity of 1 plus/minus inch per second during the center 75 percent of its rotation and shall have a smooth start and stop.
The mandrel shall be made of steel. The test surface of the mandrel shall be free of
scratches, nicks, or burrs and shall have a surface roughness no greater than 16 microinches ( micron). The test surface shall have a hardness no less than 40 measured on the Rockwell "C" scale, as determined pursuant to ASTM E 18-74 entitled "Standard Test Methods for Rockwell Hardness and Rockwell Superficial Hardness of Metallic Materials.", published July 1974.
The tape shall be pressure-sensitive polytetrafluoroethylene (TFE) high temperature
electrical insulation tape as described in Military Specification MIL-I-23594B (1971). The thickness of the polytetrafluoroethylene backing shall be between inch and inch. The adhesive shall be pressure-sensitive silicone polymer with a nominal thickness of .003 inch. The width of the tape shall not be less than 1/4 inch. While conducting sharp edge tests the temperature of the tape shall be maintained 73 degrees F +/- 3 degrees F.
Note: The tape that the CPSC (and therefore Hasbro, Inc.) will use for the sharp edge test is Type "T”.
REQUIREMENTS
No Hasbro, Inc. product shall have accessible sharp metal or glass edges nor shall
accessible metal or glass edges become produced after the the product has been subjected to the applicable use and abuse tests.
No Hasbro, Inc. product shall have accessible "edges" or "burrs" (of any material) which, although not "sharp" by CPSC definition, still appear "sharp" to the casual observer and potentially represent an unreasonable risk of injury as a result of normal use or reasonably foreseeable misuse (. some products or components of products will be deemed to possess unacceptable "sharp" edges due to the nature of the use or user of the product, even though they may not be "sharp" by CPSC definition).
REFERENCE
16 CFR
F963-08 (ASTM) Section
EN71-1: 2005 + A8:2009, Sections ,
ISO 8124-1: 2009, Sections ,
REVISION LOG
REVISION LETTER
REVISED SECTION
REVISION SUMMARY
BY
DATE
E
Reviewed for clarity and currentness, updated references if needed; no substantial changes
CJF
5/3/11
