New York Codes, Rules and Regulations › Title 12 - DEPARTMENT OF LABOR › Appendices › Appendix F-2

Current through Register Vol. 46, No. 28, July 10, 2024
GENERAL PURPOSE VINYL PLASTIC FILM
(Commercial Standard 192-53, issued by the U.S. Department of
				Commerce)
1. PURPOSE, SCOPE, AND
			 GENERAL DESCRIPTION OF PRODUCTS COVERED
1.1 Purpose.--The purpose of this Commercial Standard is to
				promulgate minimum standards for vinyl plastic film in order to maintain the
				quality of the materials in question for the mutual protection of manufacturers
				and consumers.
1.2 Scope. --This standard covers methods of test and
				requirements for general purpose vinyl plastic film to insure satisfactory
				products for consumer use. The requirements and methods of test specify
				thickness tolerances, yield per roll, width tolerances, shrinkage at elevated
				temperatures, contamination, appearance, crocking, tensile properties, tear
				resistance, volatility of plasticizer, water extraction, low-temperature
				impact, and flammability. Suggested forms for declaring compliance with the
				standard and an identifying hallmark are included.
1.3 General description of products covered. --The material
				covered is nonrigid, unsupported, vinyl plastic film 10 mils and less in
				thickness, including transparent, translucent, and opaque material, whether
				plain, embossed, molded or otherwise surface treated.
2. DIMENSIONAL TOLERANCES
2.1 Thickness. --The average thickness of the film shall be
				within +- 10 percent of that specified. The average thickness shall be
				determined from five uniformly spaced readings taken across the width of the
				sheet. The referee test method for average thickness shall be the method
				described in paragraph 4.1.
2.1.1 Average thickness based on yield per roll.--The yield of
				material in any one roll shall be based on average thickness of the film, which
				shall be +- 5 percent of the thickness specified, calculated as follows:
Average thickness (mils) = 770 x net weight (lb)
specific gravity x length (yd) x width (in.).
2.2 Width. --The film shall be held to a tolerance of + 1/2 - 0
				in. of the width specified by the purchaser and agreed to by the manufacturer.
				This tolerance shall apply when the material is in roll form on the
				core.
2.3 Length. --The length of material, excluding that which has
				been subjected to embossing, printing, etc., shall be continuous in any one
				roll, and the total length in a roll shall be as agreed to by the manufacturer
				and the purchaser.
3.
			 REQUIREMENTS
3.1 Shrinkage at elevated temperatures. --The average
				dimensional change shall be not greater than 7 percent in any direction when
				the film is tested at a temperature of 100° C for 30 minutes in accordance with
				the method referred to in paragraph 4.2.
3.2 Contamination. --The material shall be as free as is
				commercially practicable from pinholes, particles of foreign matter, and
				undispersed raw materials. The material shall have no visible holes.
3.3 Appearance. --The material shall be as free as is
				commercially practicable from visual defects, e. g., "cold-checks," "crow's
				feet," "pine trees," "streaks," and "blisters." It shall also have smooth
				edges, free from cuts and nicks.
3.4 Crocking. --The amount of color transferred from the
				specimen under examination to the white test square shall not be perceptible
				when the material is tested in accordance with the method described in
				paragraph 4.3.
3.5 Tensile properties. --The minimum average tensile strength
				of the material, when tested in accordance with the method referred to in
				paragraph 4.4, shall be 2,100 psi when tested with the pendulum-type machine
				and 2,300 psi when a static-controlled separation-type machine is used. Either
				of these methods may be used. If the film meets the requirement by any one
				method, the film shall be considered as passed. The minimum ultimate elongation
				of the materials shall be 150 percent.
3.6 Tensile tear resistance. --The minimum average tensile tear
				strength of the film (either plain or after embossing, if embossed) in any
				direction shall be 200 lb/in. when tested in accordance with the method
				referred to in paragraph 4.5.
3.7 Elmendorf tear resistance.--The minimum average Elmendorf
				tear strength of the film (either plain or after embossing, if embossed) in any
				direction shall be 180 grams per sheet for film 3 mils or less in thickness,
				and 60 grams per mil for film greater than 3 mils in thickness, when tested in
				accordance with the method referred to in paragraph 4.6.
3.8 Plasticizer volatility. --The average weight loss based on
				initial film weight shall be not more than 10 percent for film 3 mils or less
				in thickness, 9 percent for film 4 mils, 7 1/2 percent for film 6 mils, and 5
				percent for film 8 mils in thickness, when tested at a temperature of 70° +- 2°
				C (158° +- 3.6° F) for 24 hours in accordance with the method referred to in
				paragraph 4.7.
3.9 Water extraction. -- The material shall show not more than
				1 percent average loss lay weight when tested in accordance with the method
				referred to in paragraph 4.8.
3.10 Low-temperature impact. --Not more than 2 specimens out of
				10 shall fail when tested at a temperature of -17.8° +- 2° C (0° +- 3.6° F) in
				accordance with the method described in paragraph 4.9.
3.11 Flammability.--The rate of burning shall not exceed 1.2
				in./sec as judged by the average of five determinations length wise and five
				determinations transverse to the direction of processing, when the material is
				tested with the SPI flammability tester in accordance with the method described
				in paragraph 4.10.
NOTE.--Light stability. At the industry meeting on November 18,
				1952, the desirability of including a requirement for light stability was
				discussed at some length.
The Society of the Plastics Industry (SPI) Committee which
				prepared this recommended, Commercial Standard for general purpose vinyl
				plastic film recognized the value and need of such a requirement. However,
				after years of work by the SPI group, which was assigned the problem of
				selecting or developing a suitable method of test for light stability, as well
				as the enormous amount of work done by the American Society for Testing
				Materials and various governmental agencies, such as the National Bureau of
				Standards, no suitable method has been found or developed. Two major
				difficulties have been encountered:
(1) the poor degree of reproducibility
			 between different pieces of apparatus of the same type;
(2) the poor degree of correlation between
			 laboratory light stability tests and service behavior.
The SPI group working on light stability hopes to have a
				reasonably satisfactory method in a year or two. It was the opinion of the
				committee recommending this specification for promulgation as a Commercial
				Standard that it would be more of a detriment to the plastic film industry than
				a benefit to wait for another 2 years to issue this standard because of the
				lack of this one test. When a suitable test method is developed, the Commercial
				Standard call be revised. Any help which anyone can offer to the SPI group will
				be appreciated.