Abstract: A heat-resistant anti-static pressure-sensitive adhesive tape comprising a substrate having coated thereon an acrylic microparticulate adhesive having an average diameter of at least about 1 micrometer, wherein the microparticles have a surface bearing thereon a conductive material formed from a polymer electrolyte base polymer, and at least one ionic salt selected from the group consisting of salts of alkali metals and salts of alkaline earth metals, and at least one thermal stabilizer selected from the group consisting of hindered amines, salts of substituted toluimidazoles, and mixtures thereof, said substituted toluimidazoles having the formula: ##STR1## wherein R.sub.1 is selected from the group consisting of hydrogen, a methyl group, an ethyl group and a propyl group, R.sub.

Abstract: A method includes the steps of providing an article comprising an oxidizable organic compound; passing the article through a chamber; exposing the article, while in the chamber, to a source of actinic radiation at a wavelength, intensity and residence time sufficient to provide the article with a dose of actinic radiation of at least 100 mJ/cm.sup.2 ; and exposing the article, while in the chamber, to a source of heat sufficient to raise the temperature inside the chamber to at least 55.degree. F. An apparatus is also disclosed.

Abstract: A polymeric film has a substrate layer having a primer layer of a polymer containing at least one ethylenically unsaturated group, and a silicone resin coating layer on the surface of the primer layer. The substrate is preferably a polyester film. The primer layer polymer is preferably a polyurethane resin. The polymeric film is particularly suitable for use as a release film.

Abstract: Self-adhesive protective film, especially for cars, characterized in that a self-adhesive composition of polyethylene vinyl acetate with a loss angle tan .delta. of from 0.6 to 1.0, measured at a temperature of 60.degree. C. and a frequency of 10.sup.-2 Hz, and from 0.4 to 0.7, measured at a temperature of 60.degree. C. and a frequency of 10 Hz, is applied to a film backing.

Abstract: A metallized uniaxially heat-shrinkable, biaxially oriented, multilayer film having a polypropylene-containing core layer comprising at least 70 wt. % of said multilayer film and at least one polyolefin-containing skin layer adjacent said core layer is prepared by biaxially orienting a coextrudate and thereafter orienting said coextrudate by stretching 10 to 40% in the machine direction. The core layer contains isotactic polypropylene and a modifier which reduces the crystallinity of the polypropylene by increasing chain imperfections or reducing isotacticity of the polypropylene-containing core. Such modifiers can be selected from the group consisting of atactic polypropylene, syndiotactic polypropylene, ethylene-propylene copolymer, propylene-butene-1 copolymer, ethylene-propylene-butene-1 terpolymer, and linear low density polyethylene. The skin layer can be high density polyethylene or ethylene-propylene-butene-1 terpolymer.

Abstract: The present invention provides an oxygen-absorbing resin composition, which is capable of sufficiently causing the oxygen-absorbing reaction even in a low-water environment, and also provides a packing material, packing method and package using such oxygen-absorbing resin composition.This invention is an oxygen-absorbing resin composition which contains a resin and an oxygen absorber which is made by coating iron powder with sodium iodide and potassium iodide. In a multi-layered film formed from this resin composition, iron particles coated with sodium iodide, etc. is dispersed in an oxygen-absorbing resin layer 4. Since a reaction accelerator of the oxygen absorber contains sodium iodide and potassium iodide as its principal component, this multi-layered film sufficiently absorbs oxygen in a low-water environment.

Abstract: A latex antistatic adhesive comprising an emulsion of polymerized microdrops dispersed in an aqueous medium, having an average diameter less than about 0.1 .mu.m, and a glass transition temperature (Tg) of from about -120.degree. C. to about 25.degree. C., wherein the polymerized microdrops are derived from emulsion microdrops of reactive monomers, said adhesive including at least one (meth)acrylic monomer, at least one polar monomer, at least one reactive oligomer and at least 1% of a lithium salt.

Abstract: A lighter than air balloon constructed from a flexible film material which has coated one or more of its interior or exterior surfaces thereon a barrier material which is not a pure metal and which has an oxygen transmission rate of less than 0.5 cm.sup.3 /100 in.sup.2 /24 hr. at 75.degree. F., 65% relative humidity, said balloon being able to float when inflated with a lighter than air gas and a process for producing the balloon is provided.

Abstract: A process for making inflatable tires Puncture Proof.wherein air filled spheres or bubbles (2) are coated with a quick drying glue (10) before being inserted into a mounted, deflated tire, which is then inflated and rotated at high speed to create the centrifugal force needed to disperse spheres (2) evenly while the glue (10) dries and also to balance the wheel (8) without the use of weights.

Abstract: A polymeric laminate for use in polymeric films, and packaging material and packages made therefrom, that is roughened or knurled to produce a series of nicks or cuts over substantially the entire surface area of the laminate, producing an easy-opening feature. The laminate may be a multilayer, polymeric structure that may comprise an oriented polypropylene, polyethylene terephthalate, or a biaxially oriented nylon. The packaging material of the invention may contain a sealant film, either a single layer or multilayer film, and may also comprise an intermediate layer of foil.

Abstract: Metal sparkles having one or more colors dispersed throughout a translucent resin at a concentration which eliminates the appearance of scratches and scuff marks on the resin surface. A pigment may be used in the translucent resin to yield a variety of decorative colors to create matching containers and utensils. The metal sparkle concentration in the translucent resin contains on an average 11/2%-3% metal sparkles by weight and 0.25%-1% color by weight. The sparkle concentration may be used at a letdown ratio of 4% resulting in a composition having an average of 0.06%-0.12% sparkles by weight and 0.01%-0.04% color by weight. The sparkles are random cuts of multi-colored aluminum having an average size of 1/64" (0.015) and are manufactured from the thinnest standard sheets of aluminum which are polished to a mirror-like surface of brilliant reflectivity.

Abstract: Blends of polymers, such as aromatic condensation polymers including formable polyesters and polycarbonates with an oxygen barrier material such as aromatic or aliphatic nylon, an amorphous nylon or EVOH, which have been oriented and which contain a transition metal catalyst, exhibit the improved barrier properties and oxygen absorption properties of the present invention.

Abstract: The invention provides an adhesive sheet comprising a surface stock and an adhesive layer, the adhesive layer containing a copolymer, the copolymer comprising, based on the copolymer;(a) 5 to 40% by weight of at least one member selected from a carboxylic acid-modified rosin ester monomer and a rosin ester monomer, and if desired,(b) 5 to 40% by weight of a (poly)ethylene glycol (meth)acrylate monomer,(c) 30 to 60% by weight of a (meth)acrylic acid C.sub.4-18 alkyl ester monomer, and if desired,(d) 20% by weight or less of an ethylenically unsaturated carboxylic acid-containing monomer, and(e) 20% by weight or less of another monomer which is copolymerizable with components (a), (b) and (c) and component (d) to be used when required. When the adhesive containing the copolymer comprising component (d) and a crosslinking agent, the adhesive sheet has removability.

Abstract: An insulating tape or sheet comprising a polyester film layer and a polyolefin adhesive layer having a flexural modulus of 500-20000 kgf/cm.sup.2. The insulating tape or sheet of the present invention can provide an insulated wire having superior buckling resistance and is very low in cost.

Abstract: In a PSA tape construction, a primer layer comprising a neutralized rosin that includes acid functionalities and, optionally, an elastomer such as a styrene-butadiene rubber, is included between a tape backing and a poly(.alpha.-olefin) adhesive layer. Bonding of the adhesive layer to the backing is greatly improved, especially during and after high temperature baking of the tape construction.

Abstract: A packaging container for chemicals such as pesticides and the like and a laminated film for forming said container, wherein the inner layer of the laminated film is constituted of an inner bag made of a water-soluble polymer film and the outer layer of the laminated film is constituted of an outer bag made of a water-insoluble film, and at least in the seal part of the container, films constituting inner layer are bonded to each other and additionally the film constituting inner layer and the film constituting outer layer are bonded to each other, and the film constituting inner layer and the film constituting outer layer are releasable from each other.

Abstract: A barrier package for the storage of lens wafers used in fabricating laminated lenses, comprises a package adapted to be sealed to enclose therein a lens wafer and formed of a multilayer material, including a metallic layer, of low moisture transmission rate, so that conditions of humidity inside the sealed package are substantially isolated from humidity conditions external of the package. Lens wafers so stored exhibit minimum distortions to interface curvature. Instead of or in addition to being stored in a barrier package, the lens wafers can also be coated with a moisture barrier coating to achieve isolation from external humidity fluctuations. The moisture equilibrated precision lens wafers are suitable for use in optical devices.

Abstract: A therapeutic system for supplying active substances to the skin consists of a backing layer remote from the skin, with at least one active substance depot. The depot may consist of a fluid active substance or a fluid composition comprising an active substance delivery control matrix. There is also included an adhesive fixing device for fixing the therapeutic system on the skin. The therapeutic system is characterized in that the active substance depots (14) consist of at least one adjuvant having a supporting and distributing function by being provided with a planar textile material completely surrounded by matrix (12).

Abstract: A bag suitable for use in microwave cooking is constructed of an elongated tube of flexible material closed at one end by means of a cold seal closure and having a heat seal adhesive deposit applied to the other end thereof for use in closing the bag after filling thereof; and methods of making the same are described, including the making of a roll from which said bags can be made.

Abstract: An improved method of initiating oxygen scavenging by compositions which comprise compounding oxidizable organic compounds and transition metal catalysts to form a composition suitable for forming into films or articles for packaging of oxygen sensitive products is disclosed. The method requires the addition of small amounts of a base to the oxygen scavenging composition as it is being compounded to improve the initiation properties and subjecting the film or article formed from the composition to actinic or electron beam radiation.

Abstract: A microwavable thermal energy storage material is provided which includes a mixture of a phase change material and silica, and a carbon black additive in the form of a conformable dry powder of phase change material/silica/carbon black, or solid pellets, films, fibers, moldings or strands of phase change material/high density polyethylene/ethylene-vinyl acetate/silica/carbon black which allows the phase change material to be rapidly heated in a microwave oven. The carbon black additive, which is preferably an electrically conductive carbon black, may be added in low concentrations of from 0.5 to 15% by weight, and may be used to tailor the heating times of the phase change material as desired. The microwavable thermal energy storage material can be used in food serving applications such as tableware items or pizza warmers, and in medical wraps and garments.

Abstract: A vacuum packaged insulating structure designed to insulate containers, pipes, and ducts. One type of insulator comprises a vacuum sealed metal foil composite plastic flexible wrap which encloses a double-walled structural frame. The flexible wrap takes the shape of the structural frame and seals the vacuum space created between the walls of the frame. The vacuum space created in the insulator surrounds the cavity to be insulated. In another type of insulator, the vacuum sealed flexible wrap encloses a compressed body of particulate insulating material shaped and formed to surround a duct shaped cavity. The evacuated insulating material prevents the flex wrap from collapsing unto itself and surrounds the cavity to be insulated providing a continuous vacuum form of insulation through the evacuated interstices among the particles of the particulate insulating material.

Abstract: A lightweight, low permeability liner for graphite epoxy composite compressed gas storage vessels. The liner is composed of polymers that may or may not be coated with a thin layer of a low permeability material, such as silver, gold, or aluminum, deposited on a thin polymeric layer or substrate which is formed into a closed bladder using torispherical or near torispherical end caps, with or without bosses therein, about which a high strength to weight material, such as graphite epoxy composite shell, is formed to withstand the storage pressure forces. The polymeric substrate may be laminated on one or both sides with additional layers of polymeric film. The liner may be formed to a desired configuration using a dissolvable mandrel or by inflation techniques and the edges of the film seamed by heat sealing.

Abstract: A seal (12) that provides visual evidence if the seal is forced open or cooled below a breakdown temperature. The seal (12) includes a plastic strip (20), a layer of ink (22) printed on a surface of the plastic strip (20), and a layer of pressure-sensitive adhesive (24). The seal (12) can be incorporated into a bag (10) for sealing the bag (10) closed. When the bag (10) is sealed closed, the ink layer (22) is sandwiched between the plastic strip (20) and the adhesive layer (24), and the adhesive layer (24) is adhered to a back wall (18) of the bag (10). If the seal (12) is forced open, the ink layer (22) visibly delaminates from the plastic strip (20). The adhesive layer (24) and the plastic strip (20) are chosen to have different rates of shrinking when cooled, so that when the seal (12) is cooled below its breakdown temperature, the ink layer (22) delaminates. In an alternative embodiment of the plastic strip (20'), two layers (60, 62) of ink are printed onto the plastic strip (20').

Abstract: A sealed bag for vacuum-packing an electronic device in the state of being evacuated and partially thermally fused at an opening thereof includes a multi-layer film including; a first anti-static layer; a thin metal layer; an insulative layer; and a second anti-static layer. A container includes a case for accommodating at least two such sealed bags. The case is provided with a charge protective layer on an inner surface thereof; a housing for accommodating at least two cases; and a master carton for accommodating at least one housing.

Abstract: The present invention relates to easy-open hermetically sealed single serving packages. The present invention relates in particular to a multi-layer film that is particularly adapted for use in individually sealed packages where increased storage life of the packaged product is desired. The present invention is also useful in packaging multiple individual servings together in a single overall package, so that when the overall package is opened, the individual servings are protected from oxygen and moisture. More particularly, this invention is concerned with a novel film used for packaging individual sticks of chewing gum so that the freshness of each individual stick of chewing gum or the like is retained for extended periods of time after the overwrap packaging has been opened.

Abstract: An oxygen scavenging composition or system is provided comprising at least one polyterpene and at least one catalyst effective in catalyzing an oxygen scavenging reaction. A film, a multi-phase composition, a multi-layer composition, an article comprising the oxygen scavenging composition, a method for preparing the oxygen scavenging composition, and a method for scavenging oxygen are also provided.

Abstract: The packaging container according to the invention for receiving filled product can be used as a self-supporting container or as an in-liner or insert container in supporting outer containers such as corrugated paperboard boxes, wooden cases, box pallets with mesh panels, or drums. The packaging container comprises a multilayered composite film combination which is made up of a polymer film with barrier layer properties, acting as the outer layer of the container, an intermediate layer made of an electrically conductive material and also a further polymer film, forming the inner layer of the packaging container. According to the invention, the further polymer film, forming the inner layer of the packaging container, bears a perforation pattern and the electrically conductive intermediate layer is in connection with a grounding system via electric contact points. The polymer film forming the inner layer of the packaging container is preferably a heat-sealable monofilm or a coextruded film.

Abstract: An oxygen absorbing composition having an effective amount of at least one oxygen absorbent contained in an emulsion. An oxygen absorbing product is produced by dispersing an oxygen absorbent in an emulsion to form an oxygen absorbing composition and transferring the oxygen absorbing composition onto a substrate.

Abstract: An information indicator used for a tire production control label or the like is provided with a film-type substrate formed of a heat-resistant resin. An information indicating surface onto which a recognizable indication indicating specified information is printed is formed on one surface of the substrate, and a pressure sensitive adhesive layer is formed via a primer layer on the other surface of the substrate. The information indicating surface is formed so as to have a surface roughness whose arithmetical mean deviation of the profile determined in JIS B 0801 lies between 0.5 and 5 .mu.m, and an indication such as a bar code, characters, figures, symbols or drawings is attached to the information indicating surface. With the information indicator formed in this way, the indication does not become blurred or erased even under the high temperatures and high pressures during vulcanization.

Abstract: The present invention addresses the need to effectively heat seal various polymeric materials to each other. The invention is particularly useful in solving the problems associated with sealing dissimilar materials together. A bonded polymer structure and method for preparing the structure are provided. The bonded polymer structure comprises a first polymeric panel, a second polymeric panel, and a one layer adhesive or two layer adhesive structure which binds them together. The two layer adhesive structure comprises a tie layer and a sealant layer disposed between the first polymeric panel and the second polymeric panel, the tie layer contacting the first polymeric panel and the sealant layer, and the sealant layer contacting the layer and the inner side of the second polymeric panel. A closure arrangement may be integrally formed with the first polymeric panel.

Abstract: A scented plastic material such as a mesh net or scented bathing implement and method for producing same is taught. Briefly stated, a scented additive is simultaneously extruded with a plastic raw material in order to form an intermediate or raw stock. The intermediate or raw stock thereby has a particular scent or fragrance associated therewith and is embedded therein. The intermediate product is thereafter formed into a suitable end product.

Abstract: A release liner based stock for use as a carrier web including a paper substrate having an upper surface and a lower surface. A release agent is coating on the top of the upper surface. The unique soap-based acrylic layer discourages curling of the base stock release liner, fiber pick-off contamination from the uncoated side of the paper substrate, and maintains a consistent peel off force required for removing a label from the release liner and deploying it on a target object.

Abstract: An assembly for protecting the active electronic components of an electronic product from the environment and electromagnetic interference (EMI). A method is described where the assembly is formed by providing a metallized flexible enclosure around the electronic product, such as a printed circuit board, and subsequently sealing the metallized flexible enclosure, such that separable connectors can be readily accessed without violating the integrity of the seal. The metallized flexible enclosure includes multiple layers of polymeric materials that provide diffusion barrier properties and a metallic layer that provides both diffusion barrier properties and EMI shielding capabilities. The multiple layer sheet is patterned to optimize the diffusion barrier properties and EMI shielding capabilities. Further, the multiple layer sheet enables efficient, high volume production.

Abstract: A method of depositing, by microwave plasma enhanced chemical vapor deposition, a modified, silicon oxide, barrier coating atop a temperature sensitive substrate; said barrier coating having barrier properties to at least gaseous oxygen and water vapor. The precursor gaseous mixture includes at least a silicon-hydrogen containing gas, an oxygen containing gas and a gas containing at least one element selected from the group consisting of germanium, tin, phosphorus, and boron. The method requires introducing a sufficient flow rate of oxygen-containing gas into the precursor gaseous mixture to eliminate the inclusion of silicon-hydrogen bonds into the deposited coating. The preferred modifier is germanium. Also, a composite material having a microwave-plasma-enhanced-chemical-vapor-deposited silicon oxide (modified or non-modified) barrier coating. The barrier coating has barrier properties to at least gaseous oxygen and water vapor and is substantially free of Si--H bonds.

Abstract: A polymeric film has a substrate layer having a primer layer of a polyurethane resin containing at least one ethylenically unsaturated group. The primer layer provides good adhesion to a subsequently applied release layer. The substrate is preferably a polyester film. Suitable release layers contain cured silicone resins.

Abstract: An improved oxygen scavenging system is provided. The system involves an oxygen scavenging phase containing at least one oxygen-scavenger and a second phase comprising at least one catalyst effective in catalyzing a scavenging reaction. The oxygen scavenging phase is substantially devoid of any catalyst of the scavenging reaction and the second phase is effectively separate from the oxygen scavenging phase. Nevertheless, the oxygen scavenging system provides excellent scavenging capabilities while avoiding many of the prior art problems, such as undesired oxidation during high temperature processing when the system is incorporated into a multi-layer film.

Abstract: A laminate comprising a substrate, a continuous layer of a release coating on one surface thereof, and a layer of a silicone pressure sensitive adhesive on the surface of said release coating, said release coating being a mixture of a resin having perfluoro side chains and a film forming resin which binds said resin having said perfluoro side chains to said substrate, wherein said film forming resin is selected from the group consisting of polyester, polyamides, functionalized polyolefins, and nitrile polymers and copolymers.

Abstract: A decorative sheet material which includes a first sheet which has a first side and a second side, an optional layer of cushioning material which, if present, is adhered to the first side of the first sheet, a second sheet which has a first side and a second side, the first side of which is positioned against the second side of the first sheet, the second sheet being made of paper, plastic, leather, fabric and/or metal/foil, a first adhesive layer which is placed against the second side of the second sheet, and a first outer plastic layer which is placed against the first adhesive layer. The decorative sheet material may also include sprinkles, glitter, sequins, feathers, shredded mylar, shredded foil, cut-outs and the like, which are positioned either between the first adhesive layer and the outer layer of plastic or between the first side of the second sheet and the first adhesive layer. There may be one or more ridges or grooves, or both, in the first outer plastic layer.

Abstract: A coated product comprises a thermoplastic sheet support bearing on at least one surface an adhesion promoting cured layer comprising a composition of:1) 30-80% by weight individually dispersed colloidal metal oxide particles, preferably silica, alumina and/or zirconia particles of average particle size 10-100 nanometers,2) 20-70% by weight crosslinked polymer matrix derived from one or more polyethylenically unsaturated monomers, and3) a photoinitiator.Preferred embodiments of this invention include coated abrasive product in which the primed surface of the support layer is coated with a thermosetting binder containing abrasive particulates, and tape products in which the primed surface of the support layer is coated with a pressure-sensitive adhesive or magnetic media.

Abstract: The invention relates to a polymer compound for the production of sealing elements for vessel or container closures, which sealing elements when closed have a barrier effect preventing the penetration of gaseous or vaporous substances such as oxygen or aromatic compounds, in particular benzenes, phenyl ethers and suchlike into the vessel and/or show an excess pressure valve effect at interior vessel pressures of between approx. 3 and 10 bar and may be produced by mechanical forming of the unshaped thermally plastified polymer compound and its subsequent hardening directly on or in the vessel closure ("in shell" moulding), comprising a mixture of butyl and/or acrylate rubber and a polymer of an .alpha.-oleflnic unsaturated monomer as well as, if appropriate, one or several further polymer components and common additives such as glide enhancers, pigment, talcum and stabilizers. The invention further relates to a sealing element of this kind and a corresponding vessel or container closure.

Abstract: A heat-resistant anti-static pressure-sensitive adhesive tape comprising a substrate having coated thereon an acrylic microparticulate adhesive having an average diameter of at least about 1 micrometer, wherein the microparticles have a surface bearing thereon a conductive material formed from a polymer electrolyte base polymer, and at least one ionic salt selected from the group consisting of salts of alkali metals and salts of alkaline earth metals, said adhesive being adhered to said substrate by means of a primer, said primer comprising at least one phenolic resin and at least one rubbery compound, said adhesive tape being capable of surviving immersion in molten solder for at least about 5 seconds.

Abstract: The present invention is a bonding anchor coating agent and a laminated film having an anchor coating layer which provides a high anti-static performance on a film surface without having to mix the anti-static agent into the basic material of the film. The bonding anchor coating agent contains polyethylene imine and a bridge formation polymer having the ability to prevent electrostatic induction. The laminated film contains the anchor coating agent in the basic material of the film.

Abstract: A laminated tube container has the body comprising a sheet material comprising a substrate, a silicon oxide deposited layer, a heat buffer layer and an extruded coating layer of a thermoadhesive resin which are successively formed in a laminate. The heat buffer layer prevents cracks from being produced in the silicon oxide deposited layer by the heat coming when the extruded coating layer of a thermoadhesive resin is laminated. The heat buffer layer is preferably formed by dry lamination or non-solvent lamination which requires no heating. An anchor coat layer may optionally be provided between the heat buffer layer and the extruded coating layer of a thermoadhesive resin so that the adhesion strength between these layers can be improved.

Abstract: An insulating tape or sheet comprising a polyester film layer and a polyolefin adhesive layer having a flexural modulus of 500-20000 kgf/cm.sup.2. The insulating tape or sheet of the present invention can provide an insulated wire having superior buckling resistance and is very low in cost.

Abstract: A gas barrier laminated material comprising a substrate, and an inorganic compound thin-film layer and a protective layer which are laminated in this order, wherein the protective layer is a layer formed by coating on the inorganic compound thin-film layer a coating composition containing a metal alkoxide or a hydrolyzate thereof and an isocyanate compound having two or more isocyanate groups, followed by heat drying, or a layer formed by coating on the inorganic compound thin-film layer a water-based coating composition containing a water-soluble polymer and at least one of (a) a metal alkoxide or a hydrolyzate thereof and (b) a tin chloride, followed by heat drying.

Abstract: A heat-activatable adhesive article is provided. The article, preferably a tape, includes a substantially laterally stable heat recoverable carrier film having at least one surface comprising a recessed surface portion and a raised surface portion therein; and an adhesive layer in the recessed surface portion in an amount such that the adhesive does not extend above the raised surface portion thereby forming an exposed raised surface portion. In use, the carrier film recovers upon exposure to heat thereby allowing the adhesive in the recessed surface portion to contact a substrate. The heat-activatable adhesive article can be positionable, repositionable, or both.

Abstract: Self-adhesive lidding film for packaging electronic components, whose adhesive layer is covered with a non-adhesive covering in the center, wherein the adhesive layer comprises a mixture of two acrylate adhesive compositions of different polarity, the first, highly polar component containing from 1 to 20%, in particular from 6 to 10%, especially about 8%, of acrylic acid in the monomer composition, and the other, nonpolar component containing from 5 to 50%, in particular from 10 to 30%, especially about 20%, of stearyl acrylate in the monomer composition, and where an adhesion promoter or primer is present between the adhesive layer and the film support of the lidding film.

Abstract: There is disclosed a semiconductor wafer-securing adhesive tape having a radiation-curable adhesive layer on one surface of a support film, wherein the support film is composed of a laminated film that comprises, as a center layer, a film comprising a styrene/ethylene/butene/styrene block copolymer, a ethylene/acrylic acid-type copolymer, and a polyamide/polyether copolymer in a specific ratio, and has a layer for adhesive coating laid, directly or through a bonding layer, on one surface of the center layer on the side where said radiation-curable adhesive layer is provided, and has a transfer-preventing layer laid, directly or through a bonding layer, on the other surface of the center layer. There is also disclosed a semiconductor wafer-securing adhesive tape wherein the center layer of said semiconductor wafer-securing adhesive tape has a film comprising said SEBS block copolymer or SEPS block copolymer, an amorphous poly .alpha.-olefin, and a polyamide/polyether copolymer, in a specific ratio.

Abstract: An easily openable package of photographic photosensitive materials which comprises one or a plurality of photographic photosensitive materials and a light-shielding bag having a heat-sealed portion formed on the periphery and packaging the photographic photosensitive materials. The heat-sealed portion comprises a strongly joined portion and a weakly joined portion, the part surrounded by the strongly joined portion being larger than the photographic photosensitive materials being placed therein with a space, and the light-shielding bag being turned over at least at the edge of the photographic photosensitive materials on the opening side. The package is very easily openable and can ensure sealability, heat sealing properties and physical strength sufficiently.