摘要:
The invention relates to use of polylactide (PLA) as an extruded polymer coating on paper or board intended for the production of containers and packages, which are heated in a stove or microwave oven. According to the invention a polyfunctional cross-linking agent, such as trialkyl isocyanureate (TAIC), is blended with PLA, and the extruded coating layer is subjected to cross-linking electron beam (EB) radiation. PLA may be used as such or blended with another biodegradable polyester such as polybutylene succinate (PBS). EB radiation has been found to improve adhesion of the coating to the paper or board substrate, heat-scalability of the coating, and heat-resistance of the finished containers and packages.
摘要:
The invention is a filling method in which liquid is filled and sealed into a liquid sachet package made of a multilayered laminate having at least three layers in which a base material which forms a surface layer, an intermediate layer, and a sealant layer which forms an internal layer are laminated in the above order, including a process of forming a liquid sachet package, a process of filling liquid, and a process of sealing in the opening of the liquid sachet package, in which the intermediate layer is formed using a composition including an ionomer of an ethylene and unsaturated carboxylic acid copolymer, and a filling temperature range obtained using a specific method becomes equal to or more than 30°C at both a line speed of 20 m/minute and a line speed of 25 m/minute.
摘要:
There is disclosed a method of applying activatable material to a member of an article of manufacture such as an automotive vehicle. According to the method, the activatable material is provided to an applicator followed by applying the activatable material to the member wherein the activatable material is attached by way of a mechanical interlock via one or more through-holes.
摘要:
Process for manufacturing a plastic fuel tank (FT) equipped with an internal accessory, by moulding a parison using a mould comprising two cavities and a core, said process comprising the following steps : 1. the parison is introduced into the mould cavities; 2. the core is introduced inside the parison, said core having first been fitted with the accessory; 3. the mould is closed so that the cavities come into leaktight contact with the core; 4. the parison is pressed against the cavities by blowing through the core and/or applying a vacuum behind the cavities; 5. the accessory is fastened to the parison by snap riveting using a device attached to the core; 6. the mould is opened to withdraw the core; and 7. the final moulding of the parison is carried out by blow moulding (by injecting a pressurized fluid inside the parison) and/or thermoforming (by applying a vacuum behind the cavities), in which the accessory comprises an orifice for the snap riveting (5) and at least one protuberance, for which the constituent material, the dimensions and the position are such that during the fastening of the accessory by snap riveting, this protuberance will at least partially melt to form a local weld which is at another location than the obtained rivet so as to obtain two different attachment points.
摘要:
The invention relates to a heat-fusible weld seam for joining ground coating members, comprising a copolymer selected from the group of polymers containing acrylic acid, methacrylic acid or maleic anhydride, a polyethylene and a copolyamide.
摘要:
A method of enhancing the adhesion of a thermoplastic fluoroelastomer composition to a substrate, and for making composite articles, involves applying a partially cured dynamic vulcanizate of a fluoroelastomer and a thermoplastic material onto a substrate, and curing the partially cured dynamic vulcanizate while it is in contact with the substrate. The partially cured dynamic vulcanizate is made by dynamically vulcanizing a fluoroelastomer in the presence of a thermoplastic and a curing agent under conditions of time and temperature such that the fluoroelastomer is less than completely cured. The cure is completed when the dynamic vulcanizate is in contact with the substrate.
摘要:
The invention relates to a process for the welding of two polyamide parts, both made of a polyamide composition comprising a polyamide and optionally additives, the polyamide of one part (part L) having a lower softening temperature than the polyamide of the other part (part H) and wherein the polyamide composition of part L comprises one or more viscosity increasing additives increasing the melt shear viscosity of the polyamide composition at least by 30% compared to melt shear viscosity of the polyamide (measured according to ISO 11443 (Al) standard at a shear rate of 100 s-1 in a capillary rheometer with I/d = 30 mm / 1 mm). The advantage is that a good weld strength is obtained and that parts with different properties can be combined. The invention further relates to polyamide welded objects obtainable by the process, like corrugated tubes, bellows, containers, fuel inlet systems, air inlet manifolds and airducts.