摘要:
A masking member presented herein comprises a sheet of a polystyrene foam provided with cutting guide lines so that said masking member consists of a plural number of units of the masking members surrounded with said cutting guide lines wherein said cutting guide lines are discontinuous and consist of a number of small grooves or short penetrating lines or small penetrating holes wherein the total length of said grooves or lines or holes is 20 to 80% of the length of said cutting guide lines. When said masking member is used, said sheet is easily and correctly broken along said cutting guide lines by hand to a piece consisting of one or more units of the masking member to have a proper size and shape corresponding with a part of an article which is necessary to be protected from a surface treatment.
摘要:
A method for shielding areas of an article whereby a masking member is used to protect the selected areas from various surface treatments such as coating, plating, vacuum evaporation, and phosphatizing. The mask is attached to the article with an adhesive, the surface treatment is performed on the article, and the mask is removed by suction. The inventive method is particularly useful on car bodies.
摘要:
A method of corrosion, sound and vibration-proofing of a metal structure which comprises masking a selected surface of said metal structure with a polystyrene foam masking member wherein said polystyrene foam has a closed cell structure and the density of said polystyrene foam is in the range of 12.5 to 50 g/l, coating the surfaces of said metal structure, including said masking member, with plasticized polyvinyl chloride by the spray coating and removing said masking member from the resulting polyvinyl chloride-coated metal structure by stripping off said masking member with a hook for removal from said polyvinyl chloride-coated metal structure, and said masking members are panel types for the even surfaces of said metal structure, block types with a slit for the panel like parts of said metal structure, tube types with a hole for the protruding parts of said metal structure, and plug types for the holes in said metal structure.
摘要:
An expanding and shrinking member useful as a masking member is provided in the present invention. Said expanding and shrinking member comprises a panel which consists of a thermoplastic foam having closed cells and (a) cavity(ies) is(are) formed on one side of said panel and an adhesive layer is formed on the other side of said panel.
摘要:
A new masking member consisting of an inserting part and a double flange formed at the base of said inserting part wherein the diameter of the outer part of said double flange is larger than the diameter of the inner part of said double flange is presented in the present invention. When said masking member is used, said inserting part of said masking member is inserted into a hole of an article and said double flange of said masking member covers the surroundings of said hole. Thus the inside of said hole and said surroundings of said hole are protected from a surface treatment and the removing of said masking member after said surface treatment from said hole may be very smooth without obstruction of the film of said surface treatment since said film may be cut by the edge of the outer part of said double flange.
摘要:
A new masking member of a vessel type comprising a bottom, (a) wall(s) which extend(s) upwards from the perimeter of said bottom, a flange which is extended from the upper edge(s) of said wall(s), and an adhesive layer formed on the surface of said flange, with said masking member made of a thermoplastic foam, is presented in this invention. When said masking member is used, said masking member is attached by said adhesive layer to a part of the surface of an article which is necessary to be protected from a surface treatment. After said surface treatment, said masking member may be removed from said part of said article by heating and softening or by a hook.
摘要:
A new masking member comprising a body having a vessel form consisting of a bottom and wall(s) which extend(s) upwards from the perimeter of said bottom, with said body made of a thermoplastic foam, and an adhesive layer formed on the under surface of said body is presented. When said masking member is used, said masking member is attached to a part of the surface of an article which is necessary to be protected from a surface treatment. After said surface treatment, said masking member may be removed from said part of said article by heating and softening or by a hook.
摘要:
A phenolic resin composition in which the phenolic resin can be smoothly cured at a low temperature while inhibiting the generation of free formaldehyde and trapping free phenol. An epoxy compound is dispersed or dissolved as a hardener in an aqueous phenolic resin solution. The epoxy compound functions not only as a hardener for the phenolic resin but as a trapping agent for free phenol. The phenolic resin has been sulfoalkylated and/or sulfialkylated so as to have improved hydrophilicity.
摘要:
A masking member consisting of a board having a projection shape on one side and a reinforcing groove on the other side, the depth of said groove being less than the thickness of said masking member.
摘要:
A panel type masking member comprising a foamed polystyrene panel made by expandable bead molding wherein said foamed polystyrene panel has traces of opening parts of breathing paths on both sides thereof wherein said trace(s) on at least one side is(are) dent(s), and a mold used for molding of said panel type masking member comprising a fixed molding part and a movable molding part wherein said movable molding part and said fixed molding part have opening parts of breathing paths on their surface(s) thereof and said opening part(s) of breathing path(s) of said movable molding part and/or said fixed molding part rise(s) from said surfaces thereof; are provided in the instant invention.