2 edition of Permeability of plastic films and coated paper to gases and vapors. found in the catalog.
Permeability of plastic films and coated paper to gases and vapors.
Technical Association of the Pulp and Paper Industry
1962 in New York .
Written in English
|Series||TAPPI monograph series -- no. 23|
|LC Classifications||TA455 P5 T4|
|The Physical Object|
|Number of Pages||105|
The permeability of the different test pieces with loo per cent hydrogen varied from to 10 liters; each result was, Pickerin^i Permeability of Rubber to Gases therefore, multiplied by the ratio of lo to the observed permea- bility at ICO per cent, so that the loo per cent value became lo in each case and all the other values were. You can write a book review and share your experiences. Other readers will always be interested in your opinion of the books you've read. Whether you've loved the book or not, if you give your honest and detailed thoughts then people will find new books that are right for them. Full text of "Permeability of rubber to gases" See other formats DEPARTMENT OF COMMERCE Scientific Papers OF THE Bureau of Standards S. W. STRATTON. Director No. PERMEABILITY OF RUBBER TO GASES BY JUNIUS DAVID EDWARDS, Associate Chemist S. F. PICKERING, Associate Chemist Bureau of Standards J PRICE, 10 CENTS . when greaseproof paper is used for other end-uses such as baking paper, baking cups, pet-food bags, pan liners, release papers for technical lamination, graphic papers and papers for textile cores. To further extend the use of greaseproof paper, barrier properties against gases such as water vapour and oxygen are needed. Porosity.
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Permeability of plastic films and coated paper to gases and vapors. New York, (OCoLC) Document Type: Book: All Authors / Contributors: Vivian Stannett; Technical Association of the Pulp and Paper Industry. Permeability of Plastic Films and Coatings: To Gases, Vapors, and Liquids (Polymer Science and Technology) (Polymer Science and Technology (6)) [Hopfenberg, Harold] on *FREE* shipping on qualifying offers.
Permeability of Plastic Films and Coatings: To Gases, Vapors, and Liquids (Polymer Science and Technology) (Polymer Science and Technology (6))Cited by: Rapid evaluation of phosphine permeability through various flexible films and coated fabrics.
Pesticide Science8 (5), DOI: /ps Hidemitsu Hojo, William N. Findley. Effect of gas diffusion on creep behavior of by: R. Barrer, in Permeability of Plastic Films and Coating to Gases, Vapors, and Liquids, edited by H. Hopfenberg (Plenum Press, New York, ), p. Cited by: Permeability of polymers to gases and vapors.
widely cited book has been used all over the world. The fourth edition incorporates the latest developments in the field while maintaining the. The permeability and solubility of gases and liquids in a polymer can be very different for different polymers and permeants.
In general, permeability and solubility at a given temperature depend on the degree of crystallinity (morphology), the molecular weight, the type of permeant and its concentration or pressure, and in the case of copolymers, also on the composition.
The gas permeability of plastic films is important in packaging, containment, and agricultural fumigation. Recently, an approach for estimating the mass transfer coefficient of.
Galić and Ciković reported the experimental study on the gas permeability of commercial polymer like PE, PP, Cellophane PVDC coated (commercial name XSAT), Paper/PE, and PA/PE determined before and after being exposed to food simulant (permitted from the Permeability of plastic films and coated paper to gases and vapors.
book Directives) with N 2, CO 2, and O 2 gases. They found that the permeability Permeability of plastic films and coated paper to gases and vapors.
book these Cited by: HAMMON, ERNST, AND NEWTON EXPERIMENTAL Selection and Preparation of Films and Coatings Commercial extruded- or cast-polymer films of known composition to mm ( to 5 mils) in thickness were selected for the permeability study. Over this thickness range, there did not appear to be a thickness effect.
The permeability properties of paper also vary significantly due to properties of fibres such as size, flexibility and surface structure. Also, the uniformity of the disordered fibrous web and interaction between fluid and fibres can affect the flow resistance.
The effects of these factors on permeability can best beanalysed experimentally. Permeation of molecules from a gas or liquid through plastic materials is interesting in many contexts, both in terms of maintaining gas inside a lightweight container and in terms of keeping products/enviroments free of atmospheric gases such as nitrogen, oxygen or CO theoretic basis for the gas transmission rate or gas permeability is described briefly below.
Gas Permeability the property of solids that allows the passage of a gas through the body in the Permeability of plastic films and coated paper to gases and vapors. book of a pressure differential.
A distinction is made, depending on the structure of the solid and the magnitude of the pressure differential, among three main types of gas permeability: diffusion flow, molecular effusion, and laminar flow. Diffusion.
Most widely held works about Technical Association of the Pulp and Paper Industry Directory by Technical Permeability of plastic films and coated paper to gases Permeability of plastic films and coated paper to gases and vapors. book vapors by Papermaking machinery Paper--Microbiology Paper mills Paper products Paper--Standards Paper--Testing Paper--Wet strength Plastic films--Permeability Plastics in.
PERMEATION, DIFFUSION, AND SORPTION OF GASES AND VAPORS By R. Felder and G. Huvard Introduction The earliest studies of the transport of fluids in polymers consisted of measuring permeation rates of various gases in natural rubber membranes and correlating the measured rates with the partial pressure difference across the membrane, the Cited by: literatuire that polyethylene has a high permeability to CO., and a low permeability to water vapor (8, p ) give the impressilon (4) that polyethylene is more permeable to CO, than to water vapor.
Such statements are misleading because they refer to polyethylene in comparison to other common packaging films. Puiblished data (1, 2, 3,5, 7, 8, 9,Cited by: The permeability of three example papers, an LWC base paper, a standard woodfree copy paper and a multi-coated woodfree paper, was studied over a range of applied pressures.
The paper properties and the permeation results are collected in Table 1. The equivalent permeation radius, rperm (Eq. ) and the permeability constant, k (Eq. ), are thusFile Size: KB. Gas Permeability Test Equipment is based on differential pressure method and used to measure gas permeability of plastic films, sheeting, paper, foils and etc.
This equipment can test 3 specimens. Kouris (Ed.), Permeability of Plastic Films and Coated Paper to Gases and Vapors, TAPPI Monograph Series No. 23, Technical Association of the Pulp and Paper Industry, New York (), pp.
Google ScholarCited by: THE PERMEABILITY OF POROUS MEDIA TO LIQUIDS AND GASES "f L. KLINKENBERG " ABSTRACT The standard procedure for determining the permea- bility of porous media according to APZ Code No.
27 (first edition, October ) is based on the funda- mental assumption that, as long as the rate of flow isFile Size: KB. GAS PERMEABILITY OF FLOUROPOLYMERS Data based on um film thickness at 23˚ C.
Method: ASTM D for gases. Water vapor according to DIN PVDF film is made by Westlake Plastics from Kynar® PVDF. AR *Data published in Kunstsoffe paper entitled Flourocarbon Films – Present situation and future Size: 44KB.
Permeability and plastic packaging Categories: Analysis and Testing, Packaging When we say that a material or packaging has a particular gas permeability, for instance oxygen, it gives us an idea of the amount of gas molecules that pass over the surface of the material or packaging.
Permeability is a property of porous materials that quantifies the relative ease with which a transporting substance can pass through the material.
DIN () Testing of plastics and elastomer films, paper, board and other sheet materials-Determination of water Krochta JM () Oxygen barrier performance of whey-protein-coated. ABSTRACT The standard procedure for determining the permeability of porous media according to APZ Code No.
27 (first edition, October ) is based on the fundamental assumption that, as long as the rate of flow is proportional to the pressure gradient, the permeability constant of a porous medium is a property of the medium, and is independent of the fluid used in its. The author analyzes influencing factors of water vapor permeability testing methods for plastic films/packages.
Meanwhile, some suggestions for improvement are put forward. Keywords. water vapor permeability, water vapor transmission rate, cup method, sensor method, desiccant method. Write to [email protected] to contact manufacturers and suppliers of permeability tester and permeability test equipments for barrier films.
Source permeability testing equipment for plastic films, oxygen permeability tester, air permeability tester, gas permeability tester, water vapour and carbon dioxide permeability tester. Measurements were made on water vapor permeability of cellulose nitrate films containing plasticizers, pigments and resins.
As to the effect of plasticizers, tricresyl phosphate having good miscibility is effective in decreasing the vapor permeability coefficient (P).P first decreases and then, after passing through a minimum, increases rapidly with increasing the volume.
Barrier and permeation of polymeric films. The mechanism by which substances travel through an intact plastic film is known as permeation. It involves dissolution of the penetrating substance, the permeate in the plastic, followed by diffusion of the permeate through the film, and finally by evaporation of the permeate on the other side of the film, all driven by a Cited by: 8.
measure of permeability) of the fumigants methyl bromide (MeBr), 1,3-dichloropropene (1,3-D), propargyl bromide (PrBr), and chloropicrin (CP) across HDPE films were determined to indicate the impact of these environmental conditions on HDPE permeability.
Materials and Methods Chemicals and Plastic Films. Methyl bromide in a lecture. Soy Proteins Isolate (SPI) based films were prepared. The various factors affecting the formation of these films were studied by measuring the physical (thickness and surface density), chemical (moisture content and water solubility), optical (light transmission and color), mechanical (tensile strength and elongation at break) and barrier (water vapor and oxygen permeability) properties.
Permeability of Mylar® to Gases and Vapors Vapors g/ in 2/24 hr/mil* Acetone Benzene Carbon Tetrachloride Ethyl Acetate Hexane cc/ in 2/ Author: ELE Created Date: Z File Size: KB.
This is the only data handbook on the barrier and film properties of polymeric materials in thin sections. Data on permeation of liquids, gases, moisture, aroma, and flavor - all important considerations in a wide range of applications - is extensive.
Nearly preprocessed resins, composites and multilayer films are covered. Thermoplastics, thermosets, thermoplastic. PVC has a fairly high moisture permeability coefficient, at Fluorinated polymers, on the other hand, such as Kel-F 81 and Teflon, have very low oxygen and moisture perme- ability (Table 2).
Indeed, Kel-F 81 has the low- est water vapor permeability of all known plastics (Refs. 3, 7). Unfortunately, Kel-F tub-File Size: KB. Plastic Films – Including Multi-layers and Coatings 5 Bulk Plastics – Thick Sections 5 Adhesive Joints 5 Polymer Matrix Composites 6 Seals and Sealants 6 2.
PERMEABILITY MECHANISMS 7 DISSOLUTION AND ABSORPTION 8 DIFFUSION 9 PERMEABILITY 10 DESORPTION Gas permeability (plastic films manometric) according to DIN / DIN M Description: Universal testing method applicable to nearly all gases for the determination of gas transmission rate through plastic films or other materials depending on temperature and.
Romero, Anna, "Evaluation of the change on water vapor transmission rate of different polypropylene films in contact with d-Limoneme and the effect such changes have on the shelf life of confectionary products." ().
Thesis. Rochester Institute of Technology. Accessed from. For water vapor permeability test, a unified data system could be obtained for different test methods by calibration specified in standards. However, there is no effective way to get a unified data system for gas permeability test at present.
Therefore it is critical to select a proper test method when performing gas permeability test. The permeabilities of several types of plastic films to water and to carbon dioxide were measured. No material was found to have a carbon dioxide permeability as great as its water permeability.
Full text Full text is available as a scanned copy of the original print by: Generally, the permeability coefficient is a basic value for the permeability of material.
IV Conclusion The method of partial pressure difference has taken an efficient solution for the effect of pressure difference, and can assure that the structure of samples has no significant deformation under the pressure difference.
UV-VIS spectrophotometry was used to evaluate the transmittance of the coated PLA films in the visible range (– nm). Transmittance of the films was measured in three different sites. Water vapor transmission rate tests were done in a climate chamber at 23°C and 85 RH% for 7 days in the case of both films and by: permeability over their surface, such as cigarette paper (both inherently porous and randomly perforated over the whole area), reconstituted tobacco in sheet and plug wrap paper.
In CORESTA Method N° 18 was published and was applicable to materials having a narrow and oriented permeability zone such as perforated tipping paper. Water Vapor Permeability of Films Pdf Note Precise determination of the permeability for water molecules through a material is a big concern for the characterization of films and determination of their usability as packaging material and barrier for zones of different water vapor Size: KB.Water vapor transmission rate through plastic film and sheeting using a modulated infrared sensor download pdf.
Scope This test method covers a procedure for determining the rate of water vapor transmission through flexible barrier materials.
The method is applicable to sheets and films up to mm ( in.) in thickness, consisting of single.Water Vapor Ebook Analysis of Food Wrapping Film Using TGA n Introduction Wrapping ebook that is used for wrapping food ingredients and prepared dishes consists of plastic film material about 10 μm thick, is transparent, light-weight, and flexible, and possesses good heat and water resistance.
Food wrapping film has been on the.